mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
stream->name was being freed (without being NULL-ed) before we were certain it would be set again. CID #1456071 Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/582>
6049 lines
179 KiB
C
6049 lines
179 KiB
C
/* GStreamer
|
||
* Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
|
||
* Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
|
||
* Copyright (C) <2009-2010> STEricsson <benjamin.gaignard@stericsson.com>
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Library General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2 of the License, or (at your option) any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Library General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Library General Public
|
||
* License along with this library; if not, write to the
|
||
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
||
* Boston, MA 02110-1301, USA.
|
||
*/
|
||
/* Element-Checklist-Version: 5 */
|
||
|
||
/**
|
||
* SECTION:element-avidemux
|
||
* @title: avidemux
|
||
*
|
||
* Demuxes an .avi file into raw or compressed audio and/or video streams.
|
||
*
|
||
* This element supports both push and pull-based scheduling, depending on the
|
||
* capabilities of the upstream elements.
|
||
*
|
||
* ## Example launch line
|
||
* |[
|
||
* gst-launch-1.0 filesrc location=test.avi ! avidemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! videoconvert ! videoscale ! autovideosink
|
||
* ]| Play (parse and decode) an .avi file and try to output it to
|
||
* an automatically detected soundcard and videosink. If the AVI file contains
|
||
* compressed audio or video data, this will only work if you have the
|
||
* right decoder elements/plugins installed.
|
||
*
|
||
*/
|
||
|
||
#ifdef HAVE_CONFIG_H
|
||
#include "config.h"
|
||
#endif
|
||
|
||
#include <string.h>
|
||
#include <stdio.h>
|
||
|
||
#include "gst/riff/riff-media.h"
|
||
#include "gstavidemux.h"
|
||
#include "avi-ids.h"
|
||
#include <gst/gst-i18n-plugin.h>
|
||
#include <gst/base/gstadapter.h>
|
||
#include <gst/tag/tag.h>
|
||
|
||
#define DIV_ROUND_UP(s,v) (((s) + ((v)-1)) / (v))
|
||
|
||
#define GST_AVI_KEYFRAME (1 << 0)
|
||
#define ENTRY_IS_KEYFRAME(e) ((e)->flags == GST_AVI_KEYFRAME)
|
||
#define ENTRY_SET_KEYFRAME(e) ((e)->flags = GST_AVI_KEYFRAME)
|
||
#define ENTRY_UNSET_KEYFRAME(e) ((e)->flags = 0)
|
||
|
||
|
||
GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
|
||
#define GST_CAT_DEFAULT avidemux_debug
|
||
|
||
static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
|
||
GST_PAD_SINK,
|
||
GST_PAD_ALWAYS,
|
||
GST_STATIC_CAPS ("video/x-msvideo")
|
||
);
|
||
|
||
#ifndef GST_DISABLE_GST_DEBUG
|
||
static const char *const snap_types[2][2] = {
|
||
{"any", "after"},
|
||
{"before", "nearest"},
|
||
};
|
||
#endif
|
||
|
||
static void gst_avi_demux_finalize (GObject * object);
|
||
|
||
static void gst_avi_demux_reset (GstAviDemux * avi);
|
||
|
||
#if 0
|
||
static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
|
||
#endif
|
||
static gboolean gst_avi_demux_handle_src_event (GstPad * pad,
|
||
GstObject * parent, GstEvent * event);
|
||
static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
|
||
GstObject * parent, GstEvent * event);
|
||
static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
|
||
|
||
#if 0
|
||
static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
|
||
#endif
|
||
static gboolean gst_avi_demux_handle_src_query (GstPad * pad,
|
||
GstObject * parent, GstQuery * query);
|
||
static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
|
||
gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
|
||
|
||
static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment,
|
||
GstSeekFlags flags);
|
||
static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
|
||
GstEvent * event);
|
||
static gboolean gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
|
||
GstEvent * event);
|
||
static void gst_avi_demux_loop (GstPad * pad);
|
||
static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad,
|
||
GstObject * parent);
|
||
static gboolean gst_avi_demux_sink_activate_mode (GstPad * sinkpad,
|
||
GstObject * parent, GstPadMode mode, gboolean active);
|
||
static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstObject * parent,
|
||
GstBuffer * buf);
|
||
#if 0
|
||
static void gst_avi_demux_set_index (GstElement * element, GstIndex * index);
|
||
static GstIndex *gst_avi_demux_get_index (GstElement * element);
|
||
#endif
|
||
static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
|
||
GstStateChange transition);
|
||
static void gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi);
|
||
static void gst_avi_demux_get_buffer_info (GstAviDemux * avi,
|
||
GstAviStream * stream, guint entry_n, GstClockTime * timestamp,
|
||
GstClockTime * ts_end, guint64 * offset, guint64 * offset_end);
|
||
|
||
static void gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf);
|
||
static void gst_avi_demux_parse_strd (GstAviDemux * avi, GstBuffer * buf);
|
||
|
||
static void parse_tag_value (GstAviDemux * avi, GstTagList * taglist,
|
||
const gchar * type, guint8 * ptr, guint tsize);
|
||
|
||
/* GObject methods */
|
||
|
||
#define gst_avi_demux_parent_class parent_class
|
||
G_DEFINE_TYPE (GstAviDemux, gst_avi_demux, GST_TYPE_ELEMENT);
|
||
|
||
static void
|
||
gst_avi_demux_class_init (GstAviDemuxClass * klass)
|
||
{
|
||
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
|
||
GObjectClass *gobject_class = (GObjectClass *) klass;
|
||
GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl, *subpicsrctempl;
|
||
GstCaps *audcaps, *vidcaps, *subcaps, *subpiccaps;
|
||
|
||
GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
|
||
0, "Demuxer for AVI streams");
|
||
|
||
gobject_class->finalize = gst_avi_demux_finalize;
|
||
|
||
gstelement_class->change_state =
|
||
GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
|
||
#if 0
|
||
gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_avi_demux_set_index);
|
||
gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_avi_demux_get_index);
|
||
#endif
|
||
|
||
audcaps = gst_riff_create_audio_template_caps ();
|
||
gst_caps_append (audcaps, gst_caps_new_empty_simple ("audio/x-avi-unknown"));
|
||
audiosrctempl = gst_pad_template_new ("audio_%u",
|
||
GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
|
||
|
||
vidcaps = gst_riff_create_video_template_caps ();
|
||
gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
|
||
gst_caps_append (vidcaps, gst_caps_new_empty_simple ("video/x-avi-unknown"));
|
||
videosrctempl = gst_pad_template_new ("video_%u",
|
||
GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
|
||
|
||
subcaps = gst_caps_new_empty_simple ("application/x-subtitle-avi");
|
||
subsrctempl = gst_pad_template_new ("subtitle_%u",
|
||
GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
|
||
subpiccaps = gst_caps_new_empty_simple ("subpicture/x-xsub");
|
||
subpicsrctempl = gst_pad_template_new ("subpicture_%u",
|
||
GST_PAD_SRC, GST_PAD_SOMETIMES, subpiccaps);
|
||
gst_element_class_add_pad_template (gstelement_class, audiosrctempl);
|
||
gst_element_class_add_pad_template (gstelement_class, videosrctempl);
|
||
gst_element_class_add_pad_template (gstelement_class, subsrctempl);
|
||
gst_element_class_add_pad_template (gstelement_class, subpicsrctempl);
|
||
gst_element_class_add_static_pad_template (gstelement_class, &sink_templ);
|
||
|
||
gst_caps_unref (audcaps);
|
||
gst_caps_unref (vidcaps);
|
||
gst_caps_unref (subcaps);
|
||
gst_caps_unref (subpiccaps);
|
||
|
||
gst_element_class_set_static_metadata (gstelement_class, "Avi demuxer",
|
||
"Codec/Demuxer",
|
||
"Demultiplex an avi file into audio and video",
|
||
"Erik Walthinsen <omega@cse.ogi.edu>, "
|
||
"Wim Taymans <wim.taymans@chello.be>, "
|
||
"Thijs Vermeir <thijsvermeir@gmail.com>");
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_init (GstAviDemux * avi)
|
||
{
|
||
avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
|
||
gst_pad_set_activate_function (avi->sinkpad,
|
||
GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
|
||
gst_pad_set_activatemode_function (avi->sinkpad,
|
||
GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_mode));
|
||
gst_pad_set_chain_function (avi->sinkpad,
|
||
GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
|
||
gst_pad_set_event_function (avi->sinkpad,
|
||
GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
|
||
gst_element_add_pad (GST_ELEMENT_CAST (avi), avi->sinkpad);
|
||
|
||
avi->adapter = gst_adapter_new ();
|
||
avi->flowcombiner = gst_flow_combiner_new ();
|
||
|
||
gst_avi_demux_reset (avi);
|
||
|
||
GST_OBJECT_FLAG_SET (avi, GST_ELEMENT_FLAG_INDEXABLE);
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_finalize (GObject * object)
|
||
{
|
||
GstAviDemux *avi = GST_AVI_DEMUX (object);
|
||
|
||
GST_DEBUG ("AVI: finalize");
|
||
|
||
g_object_unref (avi->adapter);
|
||
gst_flow_combiner_free (avi->flowcombiner);
|
||
|
||
G_OBJECT_CLASS (parent_class)->finalize (object);
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_reset_stream (GstAviDemux * avi, GstAviStream * stream)
|
||
{
|
||
g_free (stream->strh);
|
||
g_free (stream->strf.data);
|
||
g_free (stream->name);
|
||
g_free (stream->index);
|
||
g_free (stream->indexes);
|
||
if (stream->initdata)
|
||
gst_buffer_unref (stream->initdata);
|
||
if (stream->extradata)
|
||
gst_buffer_unref (stream->extradata);
|
||
if (stream->rgb8_palette)
|
||
gst_buffer_unref (stream->rgb8_palette);
|
||
if (stream->pad) {
|
||
if (stream->exposed) {
|
||
gst_pad_set_active (stream->pad, FALSE);
|
||
gst_element_remove_pad (GST_ELEMENT_CAST (avi), stream->pad);
|
||
gst_flow_combiner_remove_pad (avi->flowcombiner, stream->pad);
|
||
} else
|
||
gst_object_unref (stream->pad);
|
||
}
|
||
if (stream->taglist) {
|
||
gst_tag_list_unref (stream->taglist);
|
||
stream->taglist = NULL;
|
||
}
|
||
memset (stream, 0, sizeof (GstAviStream));
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_reset (GstAviDemux * avi)
|
||
{
|
||
gint i;
|
||
|
||
GST_DEBUG ("AVI: reset");
|
||
|
||
for (i = 0; i < avi->num_streams; i++)
|
||
gst_avi_demux_reset_stream (avi, &avi->stream[i]);
|
||
|
||
avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
|
||
avi->num_streams = 0;
|
||
avi->num_v_streams = 0;
|
||
avi->num_a_streams = 0;
|
||
avi->num_t_streams = 0;
|
||
avi->num_sp_streams = 0;
|
||
avi->main_stream = -1;
|
||
|
||
avi->have_group_id = FALSE;
|
||
avi->group_id = G_MAXUINT;
|
||
|
||
avi->state = GST_AVI_DEMUX_START;
|
||
avi->offset = 0;
|
||
avi->building_index = FALSE;
|
||
|
||
avi->index_offset = 0;
|
||
g_free (avi->avih);
|
||
avi->avih = NULL;
|
||
|
||
#if 0
|
||
if (avi->element_index)
|
||
gst_object_unref (avi->element_index);
|
||
avi->element_index = NULL;
|
||
#endif
|
||
|
||
if (avi->seg_event) {
|
||
gst_event_unref (avi->seg_event);
|
||
avi->seg_event = NULL;
|
||
}
|
||
if (avi->seek_event) {
|
||
gst_event_unref (avi->seek_event);
|
||
avi->seek_event = NULL;
|
||
}
|
||
|
||
if (avi->globaltags)
|
||
gst_tag_list_unref (avi->globaltags);
|
||
avi->globaltags = NULL;
|
||
|
||
avi->got_tags = TRUE; /* we always want to push global tags */
|
||
avi->have_eos = FALSE;
|
||
avi->seekable = TRUE;
|
||
|
||
gst_adapter_clear (avi->adapter);
|
||
|
||
gst_segment_init (&avi->segment, GST_FORMAT_TIME);
|
||
avi->segment_seqnum = 0;
|
||
}
|
||
|
||
|
||
/* GstElement methods */
|
||
|
||
#if 0
|
||
static const GstFormat *
|
||
gst_avi_demux_get_src_formats (GstPad * pad)
|
||
{
|
||
GstAviStream *stream = gst_pad_get_element_private (pad);
|
||
|
||
static const GstFormat src_a_formats[] = {
|
||
GST_FORMAT_TIME,
|
||
GST_FORMAT_BYTES,
|
||
GST_FORMAT_DEFAULT,
|
||
0
|
||
};
|
||
static const GstFormat src_v_formats[] = {
|
||
GST_FORMAT_TIME,
|
||
GST_FORMAT_DEFAULT,
|
||
0
|
||
};
|
||
|
||
return (stream->strh->type == GST_RIFF_FCC_auds ?
|
||
src_a_formats : src_v_formats);
|
||
}
|
||
#endif
|
||
|
||
/* assumes stream->strf.auds->av_bps != 0 */
|
||
static inline GstClockTime
|
||
avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream,
|
||
guint64 bytes)
|
||
{
|
||
return gst_util_uint64_scale_int (bytes, GST_SECOND,
|
||
stream->strf.auds->av_bps);
|
||
}
|
||
|
||
static inline guint64
|
||
avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream,
|
||
GstClockTime time)
|
||
{
|
||
return gst_util_uint64_scale_int (time, stream->strf.auds->av_bps,
|
||
GST_SECOND);
|
||
}
|
||
|
||
/* assumes stream->strh->rate != 0 */
|
||
static inline GstClockTime
|
||
avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream,
|
||
guint64 frames)
|
||
{
|
||
return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
|
||
stream->strh->rate);
|
||
}
|
||
|
||
static inline guint64
|
||
avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream,
|
||
GstClockTime time)
|
||
{
|
||
return gst_util_uint64_scale (time, stream->strh->rate,
|
||
stream->strh->scale * GST_SECOND);
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_src_convert (GstPad * pad,
|
||
GstFormat src_format,
|
||
gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
|
||
{
|
||
GstAviStream *stream = gst_pad_get_element_private (pad);
|
||
gboolean res = TRUE;
|
||
|
||
GST_LOG_OBJECT (pad,
|
||
"Received src_format:%s, src_value:%" G_GUINT64_FORMAT
|
||
", dest_format:%s", gst_format_get_name (src_format), src_value,
|
||
gst_format_get_name (*dest_format));
|
||
|
||
if (G_UNLIKELY (src_format == *dest_format)) {
|
||
*dest_value = src_value;
|
||
goto done;
|
||
}
|
||
if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
|
||
res = FALSE;
|
||
goto done;
|
||
}
|
||
if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
|
||
(src_format == GST_FORMAT_BYTES
|
||
|| *dest_format == GST_FORMAT_BYTES))) {
|
||
res = FALSE;
|
||
goto done;
|
||
}
|
||
|
||
switch (src_format) {
|
||
case GST_FORMAT_TIME:
|
||
switch (*dest_format) {
|
||
case GST_FORMAT_BYTES:
|
||
*dest_value = gst_util_uint64_scale_int (src_value,
|
||
stream->strf.auds->av_bps, GST_SECOND);
|
||
break;
|
||
case GST_FORMAT_DEFAULT:
|
||
*dest_value =
|
||
gst_util_uint64_scale_round (src_value, stream->strh->rate,
|
||
stream->strh->scale * GST_SECOND);
|
||
break;
|
||
default:
|
||
res = FALSE;
|
||
break;
|
||
}
|
||
break;
|
||
case GST_FORMAT_BYTES:
|
||
switch (*dest_format) {
|
||
case GST_FORMAT_TIME:
|
||
if (stream->strf.auds->av_bps != 0) {
|
||
*dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
|
||
src_value);
|
||
} else
|
||
res = FALSE;
|
||
break;
|
||
default:
|
||
res = FALSE;
|
||
break;
|
||
}
|
||
break;
|
||
case GST_FORMAT_DEFAULT:
|
||
switch (*dest_format) {
|
||
case GST_FORMAT_TIME:
|
||
*dest_value =
|
||
avi_stream_convert_frames_to_time_unchecked (stream, src_value);
|
||
break;
|
||
default:
|
||
res = FALSE;
|
||
break;
|
||
}
|
||
break;
|
||
default:
|
||
res = FALSE;
|
||
}
|
||
|
||
done:
|
||
GST_LOG_OBJECT (pad,
|
||
"Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
|
||
gst_format_get_name (*dest_format), *dest_value);
|
||
return res;
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_handle_src_query (GstPad * pad, GstObject * parent,
|
||
GstQuery * query)
|
||
{
|
||
gboolean res = TRUE;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (parent);
|
||
|
||
GstAviStream *stream = gst_pad_get_element_private (pad);
|
||
|
||
if (!stream->strh || !stream->strf.data)
|
||
return gst_pad_query_default (pad, parent, query);
|
||
|
||
switch (GST_QUERY_TYPE (query)) {
|
||
case GST_QUERY_POSITION:{
|
||
gint64 pos = 0;
|
||
|
||
GST_DEBUG ("pos query for stream %u: frames %u, bytes %u",
|
||
stream->num, stream->current_entry, stream->current_total);
|
||
|
||
/* FIXME, this looks clumsy */
|
||
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
||
if (stream->is_vbr) {
|
||
/* VBR */
|
||
pos = avi_stream_convert_frames_to_time_unchecked (stream,
|
||
stream->current_entry);
|
||
GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
|
||
GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
|
||
} else if (stream->strf.auds->av_bps != 0) {
|
||
/* CBR */
|
||
pos = avi_stream_convert_bytes_to_time_unchecked (stream,
|
||
stream->current_total);
|
||
GST_DEBUG_OBJECT (avi,
|
||
"CBR convert bytes %u, time %" GST_TIME_FORMAT,
|
||
stream->current_total, GST_TIME_ARGS (pos));
|
||
} else if (stream->idx_n != 0 && stream->total_bytes != 0) {
|
||
/* calculate timestamps based on percentage of length */
|
||
guint64 xlen = avi->avih->us_frame *
|
||
avi->avih->tot_frames * GST_USECOND;
|
||
|
||
pos = gst_util_uint64_scale (xlen, stream->current_total,
|
||
stream->total_bytes);
|
||
GST_DEBUG_OBJECT (avi,
|
||
"CBR perc convert bytes %u, time %" GST_TIME_FORMAT,
|
||
stream->current_total, GST_TIME_ARGS (pos));
|
||
} else {
|
||
/* we don't know */
|
||
res = FALSE;
|
||
}
|
||
} else {
|
||
if (stream->strh->rate != 0) {
|
||
pos = gst_util_uint64_scale ((guint64) stream->current_entry *
|
||
stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
|
||
} else {
|
||
pos = stream->current_entry * avi->avih->us_frame * GST_USECOND;
|
||
}
|
||
}
|
||
if (res) {
|
||
GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
|
||
gst_query_set_position (query, GST_FORMAT_TIME, pos);
|
||
} else
|
||
GST_WARNING ("pos query failed");
|
||
break;
|
||
}
|
||
case GST_QUERY_DURATION:
|
||
{
|
||
GstFormat fmt;
|
||
GstClockTime duration;
|
||
|
||
/* only act on audio or video streams */
|
||
if (stream->strh->type != GST_RIFF_FCC_auds &&
|
||
stream->strh->type != GST_RIFF_FCC_vids &&
|
||
stream->strh->type != GST_RIFF_FCC_iavs) {
|
||
res = FALSE;
|
||
break;
|
||
}
|
||
|
||
/* take stream duration, fall back to avih duration */
|
||
if ((duration = stream->duration) == -1)
|
||
if ((duration = stream->hdr_duration) == -1)
|
||
duration = avi->duration;
|
||
|
||
gst_query_parse_duration (query, &fmt, NULL);
|
||
|
||
switch (fmt) {
|
||
case GST_FORMAT_TIME:
|
||
gst_query_set_duration (query, fmt, duration);
|
||
break;
|
||
case GST_FORMAT_DEFAULT:
|
||
{
|
||
gint64 dur;
|
||
GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
|
||
stream->idx_n);
|
||
|
||
if (stream->idx_n > 0)
|
||
gst_query_set_duration (query, fmt, stream->idx_n);
|
||
else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
|
||
duration, fmt, &dur))
|
||
gst_query_set_duration (query, fmt, dur);
|
||
break;
|
||
}
|
||
default:
|
||
res = FALSE;
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
case GST_QUERY_SEEKING:{
|
||
GstFormat fmt;
|
||
|
||
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
|
||
if (fmt == GST_FORMAT_TIME) {
|
||
gboolean seekable = TRUE;
|
||
|
||
if (avi->streaming) {
|
||
seekable = avi->seekable;
|
||
}
|
||
|
||
gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
|
||
0, stream->duration);
|
||
res = TRUE;
|
||
}
|
||
break;
|
||
}
|
||
case GST_QUERY_CONVERT:{
|
||
GstFormat src_fmt, dest_fmt;
|
||
gint64 src_val, dest_val;
|
||
|
||
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
|
||
if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
|
||
&dest_val)))
|
||
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
|
||
else
|
||
res = gst_pad_query_default (pad, parent, query);
|
||
break;
|
||
}
|
||
case GST_QUERY_SEGMENT:
|
||
{
|
||
GstFormat format;
|
||
gint64 start, stop;
|
||
|
||
format = avi->segment.format;
|
||
|
||
start =
|
||
gst_segment_to_stream_time (&avi->segment, format,
|
||
avi->segment.start);
|
||
if ((stop = avi->segment.stop) == -1)
|
||
stop = avi->segment.duration;
|
||
else
|
||
stop = gst_segment_to_stream_time (&avi->segment, format, stop);
|
||
|
||
gst_query_set_segment (query, avi->segment.rate, format, start, stop);
|
||
res = TRUE;
|
||
break;
|
||
}
|
||
default:
|
||
res = gst_pad_query_default (pad, parent, query);
|
||
break;
|
||
}
|
||
|
||
return res;
|
||
}
|
||
|
||
#if 0
|
||
static const GstEventMask *
|
||
gst_avi_demux_get_event_mask (GstPad * pad)
|
||
{
|
||
static const GstEventMask masks[] = {
|
||
{GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
|
||
{0,}
|
||
};
|
||
|
||
return masks;
|
||
}
|
||
#endif
|
||
|
||
#if 0
|
||
static guint64
|
||
gst_avi_demux_seek_streams (GstAviDemux * avi, guint64 offset, gboolean before)
|
||
{
|
||
GstAviStream *stream;
|
||
GstIndexEntry *entry;
|
||
gint i;
|
||
gint64 val, min = offset;
|
||
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
stream = &avi->stream[i];
|
||
|
||
entry = gst_index_get_assoc_entry (avi->element_index, stream->index_id,
|
||
before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER,
|
||
GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, offset);
|
||
|
||
if (before) {
|
||
if (entry) {
|
||
gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
|
||
GST_DEBUG_OBJECT (avi, "stream %d, previous entry at %"
|
||
G_GUINT64_FORMAT, i, val);
|
||
if (val < min)
|
||
min = val;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
if (!entry) {
|
||
GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
|
||
stream->current_entry = 0;
|
||
stream->current_total = 0;
|
||
continue;
|
||
}
|
||
|
||
gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
|
||
GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT,
|
||
i, val);
|
||
|
||
gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &val);
|
||
stream->current_total = val;
|
||
gst_index_entry_assoc_map (entry, GST_FORMAT_DEFAULT, &val);
|
||
stream->current_entry = val;
|
||
}
|
||
|
||
return min;
|
||
}
|
||
#endif
|
||
|
||
static gint
|
||
gst_avi_demux_index_entry_offset_search (GstAviIndexEntry * entry,
|
||
guint64 * offset)
|
||
{
|
||
if (entry->offset < *offset)
|
||
return -1;
|
||
else if (entry->offset > *offset)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
static guint64
|
||
gst_avi_demux_seek_streams_index (GstAviDemux * avi, guint64 offset,
|
||
gboolean before)
|
||
{
|
||
GstAviStream *stream;
|
||
GstAviIndexEntry *entry;
|
||
gint i;
|
||
gint64 val, min = offset;
|
||
guint index = 0;
|
||
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
stream = &avi->stream[i];
|
||
|
||
/* compensate for chunk header */
|
||
offset += 8;
|
||
entry =
|
||
gst_util_array_binary_search (stream->index, stream->idx_n,
|
||
sizeof (GstAviIndexEntry),
|
||
(GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
|
||
before ? GST_SEARCH_MODE_BEFORE : GST_SEARCH_MODE_AFTER, &offset, NULL);
|
||
offset -= 8;
|
||
|
||
if (entry)
|
||
index = entry - stream->index;
|
||
|
||
if (before) {
|
||
if (entry) {
|
||
val = stream->index[index].offset;
|
||
GST_DEBUG_OBJECT (avi,
|
||
"stream %d, previous entry at %" G_GUINT64_FORMAT, i, val);
|
||
if (val < min)
|
||
min = val;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
if (!entry) {
|
||
GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
|
||
stream->current_entry = 0;
|
||
stream->current_total = 0;
|
||
continue;
|
||
}
|
||
|
||
val = stream->index[index].offset - 8;
|
||
GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT, i,
|
||
val);
|
||
|
||
stream->current_total = stream->index[index].total;
|
||
stream->current_entry = index;
|
||
}
|
||
|
||
return min;
|
||
}
|
||
|
||
#define GST_AVI_SEEK_PUSH_DISPLACE (4 * GST_SECOND)
|
||
|
||
static gboolean
|
||
gst_avi_demux_handle_sink_event (GstPad * pad, GstObject * parent,
|
||
GstEvent * event)
|
||
{
|
||
gboolean res = TRUE;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (parent);
|
||
|
||
GST_DEBUG_OBJECT (avi,
|
||
"have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
|
||
|
||
switch (GST_EVENT_TYPE (event)) {
|
||
case GST_EVENT_SEGMENT:
|
||
{
|
||
gint64 boffset, offset = 0;
|
||
GstSegment segment;
|
||
GstEvent *segment_event;
|
||
|
||
/* some debug output */
|
||
gst_event_copy_segment (event, &segment);
|
||
GST_DEBUG_OBJECT (avi, "received newsegment %" GST_SEGMENT_FORMAT,
|
||
&segment);
|
||
|
||
/* chain will send initial newsegment after pads have been added */
|
||
if (avi->state != GST_AVI_DEMUX_MOVI) {
|
||
GST_DEBUG_OBJECT (avi, "still starting, eating event");
|
||
goto exit;
|
||
}
|
||
|
||
/* we only expect a BYTE segment, e.g. following a seek */
|
||
if (segment.format != GST_FORMAT_BYTES) {
|
||
GST_DEBUG_OBJECT (avi, "unsupported segment format, ignoring");
|
||
goto exit;
|
||
}
|
||
|
||
if (avi->have_index) {
|
||
GstAviIndexEntry *entry;
|
||
guint i = 0, index = 0, k = 0;
|
||
GstAviStream *stream;
|
||
|
||
/* compensate chunk header, stored index offset points after header */
|
||
boffset = segment.start + 8;
|
||
/* find which stream we're on */
|
||
do {
|
||
stream = &avi->stream[i];
|
||
|
||
/* find the index for start bytes offset */
|
||
entry = gst_util_array_binary_search (stream->index,
|
||
stream->idx_n, sizeof (GstAviIndexEntry),
|
||
(GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
|
||
GST_SEARCH_MODE_AFTER, &boffset, NULL);
|
||
|
||
if (entry == NULL)
|
||
continue;
|
||
index = entry - stream->index;
|
||
|
||
/* we are on the stream with a chunk start offset closest to start */
|
||
if (!offset || stream->index[index].offset < offset) {
|
||
offset = stream->index[index].offset;
|
||
k = i;
|
||
}
|
||
/* exact match needs no further searching */
|
||
if (stream->index[index].offset == boffset)
|
||
break;
|
||
} while (++i < avi->num_streams);
|
||
boffset -= 8;
|
||
offset -= 8;
|
||
stream = &avi->stream[k];
|
||
|
||
/* so we have no idea what is to come, or where we are */
|
||
if (!offset) {
|
||
GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
|
||
goto eos;
|
||
}
|
||
|
||
/* get the ts corresponding to start offset bytes for the stream */
|
||
gst_avi_demux_get_buffer_info (avi, stream, index,
|
||
(GstClockTime *) & segment.time, NULL, NULL, NULL);
|
||
#if 0
|
||
} else if (avi->element_index) {
|
||
GstIndexEntry *entry;
|
||
|
||
/* Let's check if we have an index entry for this position */
|
||
entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
|
||
GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE,
|
||
GST_FORMAT_BYTES, segment.start);
|
||
|
||
/* we can not go where we have not yet been before ... */
|
||
if (!entry) {
|
||
GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
|
||
goto eos;
|
||
}
|
||
|
||
gst_index_entry_assoc_map (entry, GST_FORMAT_TIME,
|
||
(gint64 *) & segment.time);
|
||
gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &offset);
|
||
#endif
|
||
} else {
|
||
GST_WARNING_OBJECT (avi, "no index data, forcing EOS");
|
||
goto eos;
|
||
}
|
||
|
||
segment.format = GST_FORMAT_TIME;
|
||
segment.start = segment.time;
|
||
segment.stop = GST_CLOCK_TIME_NONE;
|
||
segment.position = segment.start;
|
||
|
||
/* rescue duration */
|
||
segment.duration = avi->segment.duration;
|
||
|
||
/* set up segment and send downstream */
|
||
gst_segment_copy_into (&segment, &avi->segment);
|
||
|
||
GST_DEBUG_OBJECT (avi, "Pushing newseg %" GST_SEGMENT_FORMAT, &segment);
|
||
avi->segment_seqnum = gst_event_get_seqnum (event);
|
||
segment_event = gst_event_new_segment (&segment);
|
||
gst_event_set_seqnum (segment_event, gst_event_get_seqnum (event));
|
||
gst_avi_demux_push_event (avi, segment_event);
|
||
|
||
GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT,
|
||
boffset);
|
||
|
||
/* adjust state for streaming thread accordingly */
|
||
if (avi->have_index)
|
||
gst_avi_demux_seek_streams_index (avi, offset, FALSE);
|
||
#if 0
|
||
else
|
||
gst_avi_demux_seek_streams (avi, offset, FALSE);
|
||
#endif
|
||
|
||
/* set up streaming thread */
|
||
g_assert (offset >= boffset);
|
||
avi->offset = boffset;
|
||
avi->todrop = offset - boffset;
|
||
|
||
exit:
|
||
gst_event_unref (event);
|
||
res = TRUE;
|
||
break;
|
||
eos:
|
||
/* set up for EOS */
|
||
avi->have_eos = TRUE;
|
||
goto exit;
|
||
}
|
||
case GST_EVENT_EOS:
|
||
{
|
||
if (avi->state != GST_AVI_DEMUX_MOVI) {
|
||
gst_event_unref (event);
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
|
||
(NULL), ("got eos and didn't receive a complete header object"));
|
||
} else if (!gst_avi_demux_push_event (avi, event)) {
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
|
||
(NULL), ("got eos but no streams (yet)"));
|
||
}
|
||
break;
|
||
}
|
||
case GST_EVENT_FLUSH_STOP:
|
||
{
|
||
gint i;
|
||
|
||
gst_adapter_clear (avi->adapter);
|
||
avi->have_eos = FALSE;
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
avi->stream[i].discont = TRUE;
|
||
}
|
||
/* fall through to default case so that the event gets passed downstream */
|
||
}
|
||
default:
|
||
res = gst_pad_event_default (pad, parent, event);
|
||
break;
|
||
}
|
||
|
||
return res;
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_handle_src_event (GstPad * pad, GstObject * parent,
|
||
GstEvent * event)
|
||
{
|
||
gboolean res = TRUE;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (parent);
|
||
|
||
GST_DEBUG_OBJECT (avi,
|
||
"have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
|
||
|
||
switch (GST_EVENT_TYPE (event)) {
|
||
case GST_EVENT_SEEK:
|
||
if (!avi->streaming) {
|
||
res = gst_avi_demux_handle_seek (avi, pad, event);
|
||
} else {
|
||
res = gst_avi_demux_handle_seek_push (avi, pad, event);
|
||
}
|
||
gst_event_unref (event);
|
||
break;
|
||
default:
|
||
res = gst_pad_event_default (pad, parent, event);
|
||
break;
|
||
}
|
||
|
||
return res;
|
||
}
|
||
|
||
/* streaming helper (push) */
|
||
|
||
/*
|
||
* gst_avi_demux_peek_chunk_info:
|
||
* @avi: Avi object
|
||
* @tag: holder for tag
|
||
* @size: holder for tag size
|
||
*
|
||
* Peek next chunk info (tag and size)
|
||
*
|
||
* Returns: TRUE when one chunk info has been got
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
|
||
{
|
||
const guint8 *data = NULL;
|
||
|
||
if (gst_adapter_available (avi->adapter) < 8)
|
||
return FALSE;
|
||
|
||
data = gst_adapter_map (avi->adapter, 8);
|
||
*tag = GST_READ_UINT32_LE (data);
|
||
*size = GST_READ_UINT32_LE (data + 4);
|
||
gst_adapter_unmap (avi->adapter);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_peek_chunk:
|
||
* @avi: Avi object
|
||
* @tag: holder for tag
|
||
* @size: holder for tag size
|
||
*
|
||
* Peek enough data for one full chunk
|
||
*
|
||
* Returns: %TRUE when one chunk has been got
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
|
||
{
|
||
guint32 peek_size = 0;
|
||
gint available;
|
||
|
||
if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
|
||
goto peek_failed;
|
||
|
||
/* size 0 -> empty data buffer would surprise most callers,
|
||
* large size -> do not bother trying to squeeze that into adapter,
|
||
* so we throw poor man's exception, which can be caught if caller really
|
||
* wants to handle 0 size chunk */
|
||
if (!(*size) || (*size) >= (1 << 30))
|
||
goto strange_size;
|
||
|
||
peek_size = (*size + 1) & ~1;
|
||
available = gst_adapter_available (avi->adapter);
|
||
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
|
||
", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
|
||
|
||
if (available < (8 + peek_size))
|
||
goto need_more;
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
peek_failed:
|
||
{
|
||
GST_INFO_OBJECT (avi, "Failed to peek");
|
||
return FALSE;
|
||
}
|
||
strange_size:
|
||
{
|
||
GST_INFO_OBJECT (avi,
|
||
"Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
|
||
GST_FOURCC_ARGS (*tag));
|
||
/* chain should give up */
|
||
avi->abort_buffering = TRUE;
|
||
return FALSE;
|
||
}
|
||
need_more:
|
||
{
|
||
GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
|
||
available, 8 + peek_size);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/* AVI init */
|
||
|
||
/*
|
||
* gst_avi_demux_parse_file_header:
|
||
* @element: caller element (used for errors/debug).
|
||
* @buf: input data to be used for parsing.
|
||
*
|
||
* "Open" a RIFF/AVI file. The buffer should be at least 12
|
||
* bytes long. Takes ownership of @buf.
|
||
*
|
||
* Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
|
||
* Throws an error, caller should error out (fatal).
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
|
||
{
|
||
guint32 doctype;
|
||
GstClockTime stamp;
|
||
|
||
stamp = gst_util_get_timestamp ();
|
||
|
||
/* riff_parse posts an error */
|
||
if (!gst_riff_parse_file_header (element, buf, &doctype))
|
||
return FALSE;
|
||
|
||
if (doctype != GST_RIFF_RIFF_AVI)
|
||
goto not_avi;
|
||
|
||
stamp = gst_util_get_timestamp () - stamp;
|
||
GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT,
|
||
GST_TIME_ARGS (stamp));
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
not_avi:
|
||
{
|
||
GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
|
||
("File is not an AVI file: 0x%" G_GINT32_MODIFIER "x", doctype));
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Read AVI file tag when streaming
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_stream_init_push (GstAviDemux * avi)
|
||
{
|
||
if (gst_adapter_available (avi->adapter) >= 12) {
|
||
GstBuffer *tmp;
|
||
|
||
tmp = gst_adapter_take_buffer (avi->adapter, 12);
|
||
|
||
GST_DEBUG ("Parsing avi header");
|
||
if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), tmp)) {
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
GST_DEBUG ("header ok");
|
||
avi->offset += 12;
|
||
|
||
avi->state = GST_AVI_DEMUX_HEADER;
|
||
}
|
||
return GST_FLOW_OK;
|
||
}
|
||
|
||
/*
|
||
* Read AVI file tag
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_stream_init_pull (GstAviDemux * avi)
|
||
{
|
||
GstFlowReturn res;
|
||
GstBuffer *buf = NULL;
|
||
|
||
res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
return res;
|
||
else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
|
||
goto wrong_header;
|
||
|
||
avi->offset += 12;
|
||
|
||
return GST_FLOW_OK;
|
||
|
||
/* ERRORS */
|
||
wrong_header:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "error parsing file header");
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
}
|
||
|
||
/* AVI header handling */
|
||
/*
|
||
* gst_avi_demux_parse_avih:
|
||
* @avi: caller element (used for errors/debug).
|
||
* @buf: input data to be used for parsing.
|
||
* @avih: pointer to structure (filled in by function) containing
|
||
* stream information (such as flags, number of streams, etc.).
|
||
*
|
||
* Read 'avih' header. Discards buffer after use.
|
||
*
|
||
* Returns: TRUE on success, FALSE otherwise. Throws an error if
|
||
* the header is invalid. The caller should error out
|
||
* (fatal).
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_avih (GstAviDemux * avi,
|
||
GstBuffer * buf, gst_riff_avih ** _avih)
|
||
{
|
||
gst_riff_avih *avih;
|
||
gsize size;
|
||
|
||
if (buf == NULL)
|
||
goto no_buffer;
|
||
|
||
size = gst_buffer_get_size (buf);
|
||
if (size < sizeof (gst_riff_avih))
|
||
goto avih_too_small;
|
||
|
||
avih = g_malloc (size);
|
||
gst_buffer_extract (buf, 0, avih, size);
|
||
|
||
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
|
||
avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
|
||
avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
|
||
avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
|
||
avih->flags = GUINT32_FROM_LE (avih->flags);
|
||
avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
|
||
avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
|
||
avih->streams = GUINT32_FROM_LE (avih->streams);
|
||
avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
|
||
avih->width = GUINT32_FROM_LE (avih->width);
|
||
avih->height = GUINT32_FROM_LE (avih->height);
|
||
avih->scale = GUINT32_FROM_LE (avih->scale);
|
||
avih->rate = GUINT32_FROM_LE (avih->rate);
|
||
avih->start = GUINT32_FROM_LE (avih->start);
|
||
avih->length = GUINT32_FROM_LE (avih->length);
|
||
#endif
|
||
|
||
/* debug stuff */
|
||
GST_INFO_OBJECT (avi, "avih tag found:");
|
||
GST_INFO_OBJECT (avi, " us_frame %u", avih->us_frame);
|
||
GST_INFO_OBJECT (avi, " max_bps %u", avih->max_bps);
|
||
GST_INFO_OBJECT (avi, " pad_gran %u", avih->pad_gran);
|
||
GST_INFO_OBJECT (avi, " flags 0x%08x", avih->flags);
|
||
GST_INFO_OBJECT (avi, " tot_frames %u", avih->tot_frames);
|
||
GST_INFO_OBJECT (avi, " init_frames %u", avih->init_frames);
|
||
GST_INFO_OBJECT (avi, " streams %u", avih->streams);
|
||
GST_INFO_OBJECT (avi, " bufsize %u", avih->bufsize);
|
||
GST_INFO_OBJECT (avi, " width %u", avih->width);
|
||
GST_INFO_OBJECT (avi, " height %u", avih->height);
|
||
GST_INFO_OBJECT (avi, " scale %u", avih->scale);
|
||
GST_INFO_OBJECT (avi, " rate %u", avih->rate);
|
||
GST_INFO_OBJECT (avi, " start %u", avih->start);
|
||
GST_INFO_OBJECT (avi, " length %u", avih->length);
|
||
|
||
*_avih = avih;
|
||
gst_buffer_unref (buf);
|
||
|
||
if (avih->us_frame != 0 && avih->tot_frames != 0)
|
||
avi->duration =
|
||
(guint64) avih->us_frame * (guint64) avih->tot_frames * 1000;
|
||
else
|
||
avi->duration = GST_CLOCK_TIME_NONE;
|
||
|
||
GST_INFO_OBJECT (avi, " header duration %" GST_TIME_FORMAT,
|
||
GST_TIME_ARGS (avi->duration));
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
no_buffer:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No buffer"));
|
||
return FALSE;
|
||
}
|
||
avih_too_small:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Too small avih (%" G_GSIZE_FORMAT " available, %d needed)",
|
||
size, (int) sizeof (gst_riff_avih)));
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_superindex:
|
||
* @avi: caller element (used for debugging/errors).
|
||
* @buf: input data to use for parsing.
|
||
* @locations: locations in the file (byte-offsets) that contain
|
||
* the actual indexes (see get_avi_demux_parse_subindex()).
|
||
* The array ends with GST_BUFFER_OFFSET_NONE.
|
||
*
|
||
* Reads superindex (openDML-2 spec stuff) from the provided data.
|
||
*
|
||
* Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
|
||
* on error, but they are not fatal.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_superindex (GstAviDemux * avi,
|
||
GstBuffer * buf, guint64 ** _indexes)
|
||
{
|
||
GstMapInfo map;
|
||
guint8 *data;
|
||
guint16 bpe = 16;
|
||
guint32 num, i;
|
||
guint64 *indexes;
|
||
gsize size;
|
||
|
||
*_indexes = NULL;
|
||
|
||
if (buf) {
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
data = map.data;
|
||
size = map.size;
|
||
} else {
|
||
data = NULL;
|
||
size = 0;
|
||
}
|
||
|
||
if (size < 24)
|
||
goto too_small;
|
||
|
||
/* check type of index. The opendml2 specs state that
|
||
* there should be 4 dwords per array entry. Type can be
|
||
* either frame or field (and we don't care). */
|
||
if (GST_READ_UINT16_LE (data) != 4 ||
|
||
(data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Superindex for stream has unexpected "
|
||
"size_entry %d (bytes) or flags 0x%02x/0x%02x",
|
||
GST_READ_UINT16_LE (data), data[2], data[3]);
|
||
bpe = GST_READ_UINT16_LE (data) * 4;
|
||
}
|
||
num = GST_READ_UINT32_LE (&data[4]);
|
||
|
||
GST_DEBUG_OBJECT (avi, "got %d indexes", num);
|
||
|
||
/* this can't work out well ... */
|
||
if (num > G_MAXUINT32 >> 1 || bpe < 8) {
|
||
goto invalid_params;
|
||
}
|
||
|
||
indexes = g_new (guint64, num + 1);
|
||
for (i = 0; i < num; i++) {
|
||
if (size < 24 + bpe * (i + 1))
|
||
break;
|
||
indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
|
||
GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
|
||
}
|
||
indexes[i] = GST_BUFFER_OFFSET_NONE;
|
||
*_indexes = indexes;
|
||
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
too_small:
|
||
{
|
||
GST_ERROR_OBJECT (avi,
|
||
"Not enough data to parse superindex (%" G_GSIZE_FORMAT
|
||
" available, 24 needed)", size);
|
||
if (buf) {
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
}
|
||
return FALSE;
|
||
}
|
||
invalid_params:
|
||
{
|
||
GST_ERROR_OBJECT (avi, "invalid index parameters (num = %d, bpe = %d)",
|
||
num, bpe);
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/* add an entry to the index of a stream. @num should be an estimate of the
|
||
* total amount of index entries for all streams and is used to dynamically
|
||
* allocate memory for the index entries. */
|
||
static inline gboolean
|
||
gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
|
||
guint num, GstAviIndexEntry * entry)
|
||
{
|
||
/* ensure index memory */
|
||
if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
|
||
guint idx_max = stream->idx_max;
|
||
GstAviIndexEntry *new_idx;
|
||
|
||
/* we need to make some more room */
|
||
if (idx_max == 0) {
|
||
/* initial size guess, assume each stream has an equal amount of entries,
|
||
* overshoot with at least 8K */
|
||
idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
|
||
} else {
|
||
idx_max += 8192 / sizeof (GstAviIndexEntry);
|
||
GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
|
||
stream->idx_max, idx_max);
|
||
}
|
||
new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
|
||
/* out of memory, if this fails stream->index is untouched. */
|
||
if (G_UNLIKELY (!new_idx))
|
||
return FALSE;
|
||
/* use new index */
|
||
stream->index = new_idx;
|
||
stream->idx_max = idx_max;
|
||
}
|
||
|
||
/* update entry total and stream stats. The entry total can be converted to
|
||
* the timestamp of the entry easily. */
|
||
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
||
gint blockalign;
|
||
|
||
if (stream->is_vbr) {
|
||
entry->total = stream->total_blocks;
|
||
} else {
|
||
entry->total = stream->total_bytes;
|
||
}
|
||
blockalign = stream->strf.auds->blockalign;
|
||
if (blockalign > 0)
|
||
stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
|
||
else
|
||
stream->total_blocks++;
|
||
} else {
|
||
if (stream->is_vbr) {
|
||
entry->total = stream->idx_n;
|
||
} else {
|
||
entry->total = stream->total_bytes;
|
||
}
|
||
}
|
||
stream->total_bytes += entry->size;
|
||
if (ENTRY_IS_KEYFRAME (entry))
|
||
stream->n_keyframes++;
|
||
|
||
/* and add */
|
||
GST_LOG_OBJECT (avi,
|
||
"Adding stream %u, index entry %d, kf %d, size %u "
|
||
", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
|
||
stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
|
||
entry->total);
|
||
stream->index[stream->idx_n++] = *entry;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* given @entry_n in @stream, calculate info such as timestamps and
|
||
* offsets for the entry. */
|
||
static void
|
||
gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
|
||
guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
|
||
guint64 * offset, guint64 * offset_end)
|
||
{
|
||
GstAviIndexEntry *entry;
|
||
|
||
entry = &stream->index[entry_n];
|
||
|
||
if (stream->is_vbr) {
|
||
/* VBR stream next timestamp */
|
||
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
||
if (timestamp)
|
||
*timestamp =
|
||
avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
|
||
if (ts_end) {
|
||
gint size = 1;
|
||
if (G_LIKELY (entry_n + 1 < stream->idx_n))
|
||
size = stream->index[entry_n + 1].total - entry->total;
|
||
*ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
|
||
entry->total + size);
|
||
}
|
||
} else {
|
||
if (timestamp)
|
||
*timestamp =
|
||
avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
|
||
if (ts_end)
|
||
*ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
|
||
entry_n + 1);
|
||
}
|
||
} else if (stream->strh->type == GST_RIFF_FCC_auds) {
|
||
/* constant rate stream */
|
||
if (timestamp)
|
||
*timestamp =
|
||
avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
|
||
if (ts_end)
|
||
*ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
|
||
entry->total + entry->size);
|
||
}
|
||
if (stream->strh->type == GST_RIFF_FCC_vids) {
|
||
/* video offsets are the frame number */
|
||
if (offset)
|
||
*offset = entry_n;
|
||
if (offset_end)
|
||
*offset_end = entry_n + 1;
|
||
} else {
|
||
/* no offsets for audio */
|
||
if (offset)
|
||
*offset = -1;
|
||
if (offset_end)
|
||
*offset_end = -1;
|
||
}
|
||
}
|
||
|
||
/* collect and debug stats about the indexes for all streams.
|
||
* This method is also responsible for filling in the stream duration
|
||
* as measured by the amount of index entries.
|
||
*
|
||
* Returns TRUE if the index is not empty, else FALSE */
|
||
static gboolean
|
||
gst_avi_demux_do_index_stats (GstAviDemux * avi)
|
||
{
|
||
guint total_idx = 0;
|
||
guint i;
|
||
#ifndef GST_DISABLE_GST_DEBUG
|
||
guint total_max = 0;
|
||
#endif
|
||
|
||
/* get stream stats now */
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
GstAviStream *stream;
|
||
|
||
if (G_UNLIKELY (!(stream = &avi->stream[i])))
|
||
continue;
|
||
if (G_UNLIKELY (!stream->strh))
|
||
continue;
|
||
if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
|
||
continue;
|
||
|
||
/* we interested in the end_ts of the last entry, which is the total
|
||
* duration of this stream */
|
||
gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
|
||
NULL, &stream->idx_duration, NULL, NULL);
|
||
|
||
total_idx += stream->idx_n;
|
||
#ifndef GST_DISABLE_GST_DEBUG
|
||
total_max += stream->idx_max;
|
||
#endif
|
||
GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
|
||
"%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
|
||
i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
|
||
stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
|
||
(guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
|
||
(guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
|
||
|
||
/* knowing all that we do, that also includes avg bitrate */
|
||
if (!stream->taglist) {
|
||
stream->taglist = gst_tag_list_new_empty ();
|
||
}
|
||
if (stream->total_bytes && stream->idx_duration)
|
||
gst_tag_list_add (stream->taglist, GST_TAG_MERGE_REPLACE,
|
||
GST_TAG_BITRATE,
|
||
(guint) gst_util_uint64_scale (stream->total_bytes * 8,
|
||
GST_SECOND, stream->idx_duration), NULL);
|
||
}
|
||
total_idx *= sizeof (GstAviIndexEntry);
|
||
#ifndef GST_DISABLE_GST_DEBUG
|
||
total_max *= sizeof (GstAviIndexEntry);
|
||
#endif
|
||
GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
|
||
total_max, total_idx, total_max - total_idx);
|
||
|
||
if (total_idx == 0) {
|
||
GST_WARNING_OBJECT (avi, "Index is empty !");
|
||
return FALSE;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_subindex:
|
||
* @avi: Avi object
|
||
* @buf: input data to use for parsing.
|
||
* @stream: stream context.
|
||
* @entries_list: a list (returned by the function) containing all the
|
||
* indexes parsed in this specific subindex. The first
|
||
* entry is also a pointer to allocated memory that needs
|
||
* to be free´ed. May be NULL if no supported indexes were
|
||
* found.
|
||
*
|
||
* Reads superindex (openDML-2 spec stuff) from the provided data.
|
||
* The buffer should contain a GST_RIFF_TAG_ix?? chunk.
|
||
*
|
||
* Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
|
||
* throw an error, caller should bail out asap.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
|
||
GstBuffer * buf)
|
||
{
|
||
GstMapInfo map;
|
||
guint8 *data;
|
||
guint16 bpe;
|
||
guint32 num, i;
|
||
guint64 baseoff;
|
||
|
||
if (buf == NULL)
|
||
return TRUE;
|
||
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
data = map.data;
|
||
|
||
/* check size */
|
||
if (map.size < 24)
|
||
goto too_small;
|
||
|
||
/* We don't support index-data yet */
|
||
if (data[3] & 0x80)
|
||
goto not_implemented;
|
||
|
||
/* check type of index. The opendml2 specs state that
|
||
* there should be 4 dwords per array entry. Type can be
|
||
* either frame or field (and we don't care). */
|
||
bpe = (data[2] & 0x01) ? 12 : 8;
|
||
if (GST_READ_UINT16_LE (data) != bpe / 4 ||
|
||
(data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Superindex for stream %d has unexpected "
|
||
"size_entry %d (bytes) or flags 0x%02x/0x%02x",
|
||
stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
|
||
bpe = GST_READ_UINT16_LE (data) * 4;
|
||
}
|
||
num = GST_READ_UINT32_LE (&data[4]);
|
||
baseoff = GST_READ_UINT64_LE (&data[12]);
|
||
|
||
/* If there's nothing, just return ! */
|
||
if (num == 0)
|
||
goto empty_index;
|
||
|
||
GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
|
||
|
||
for (i = 0; i < num; i++) {
|
||
GstAviIndexEntry entry;
|
||
|
||
if (map.size < 24 + bpe * (i + 1))
|
||
break;
|
||
|
||
/* fill in offset and size. offset contains the keyframe flag in the
|
||
* upper bit*/
|
||
entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
|
||
entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
|
||
/* handle flags */
|
||
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
||
/* all audio frames are keyframes */
|
||
ENTRY_SET_KEYFRAME (&entry);
|
||
} else {
|
||
/* else read flags */
|
||
entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
|
||
}
|
||
entry.size &= ~0x80000000;
|
||
|
||
/* and add */
|
||
if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
|
||
goto out_of_mem;
|
||
}
|
||
done:
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
too_small:
|
||
{
|
||
GST_ERROR_OBJECT (avi,
|
||
"Not enough data to parse subindex (%" G_GSIZE_FORMAT
|
||
" available, 24 needed)", map.size);
|
||
goto done; /* continue */
|
||
}
|
||
not_implemented:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
|
||
("Subindex-is-data is not implemented"));
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
empty_index:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "the index is empty");
|
||
goto done; /* continue */
|
||
}
|
||
out_of_mem:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
|
||
("Cannot allocate memory for %u*%u=%u bytes",
|
||
(guint) sizeof (GstAviIndexEntry), num,
|
||
(guint) sizeof (GstAviIndexEntry) * num));
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Create and push a flushing seek event upstream
|
||
*/
|
||
static gboolean
|
||
perform_seek_to_offset (GstAviDemux * demux, guint64 offset, guint32 seqnum)
|
||
{
|
||
GstEvent *event;
|
||
gboolean res = 0;
|
||
|
||
GST_DEBUG_OBJECT (demux, "Seeking to %" G_GUINT64_FORMAT, offset);
|
||
|
||
event =
|
||
gst_event_new_seek (1.0, GST_FORMAT_BYTES,
|
||
GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
|
||
GST_SEEK_TYPE_NONE, -1);
|
||
gst_event_set_seqnum (event, seqnum);
|
||
res = gst_pad_push_event (demux->sinkpad, event);
|
||
|
||
if (res)
|
||
demux->offset = offset;
|
||
return res;
|
||
}
|
||
|
||
/*
|
||
* Read AVI index when streaming
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
|
||
{
|
||
guint32 tag = 0, size;
|
||
GstBuffer *buf = NULL;
|
||
guint odml_stream;
|
||
|
||
GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
|
||
|
||
if (avi->odml_subidxs[avi->odml_subidx] != avi->offset)
|
||
return FALSE;
|
||
|
||
if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
|
||
return TRUE;
|
||
|
||
/* this is the ODML chunk we expect */
|
||
odml_stream = avi->odml_stream;
|
||
|
||
if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + odml_stream / 10,
|
||
'0' + odml_stream % 10)) &&
|
||
(tag != GST_MAKE_FOURCC ('0' + odml_stream / 10,
|
||
'0' + odml_stream % 10, 'i', 'x'))) {
|
||
GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
|
||
GST_FOURCC_ARGS (tag));
|
||
return FALSE;
|
||
}
|
||
|
||
avi->offset += 8 + GST_ROUND_UP_2 (size);
|
||
/* flush chunk header so we get just the 'size' payload data */
|
||
gst_adapter_flush (avi->adapter, 8);
|
||
buf = gst_adapter_take_buffer (avi->adapter, size);
|
||
|
||
if (!gst_avi_demux_parse_subindex (avi, &avi->stream[odml_stream], buf))
|
||
return FALSE;
|
||
|
||
/* we parsed the index, go to next subindex */
|
||
avi->odml_subidx++;
|
||
|
||
if (avi->odml_subidxs[avi->odml_subidx] == GST_BUFFER_OFFSET_NONE) {
|
||
/* we reached the end of the indexes for this stream, move to the next
|
||
* stream to handle the first index */
|
||
avi->odml_stream++;
|
||
avi->odml_subidx = 0;
|
||
|
||
if (avi->odml_stream < avi->num_streams) {
|
||
/* there are more indexes */
|
||
avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
|
||
} else {
|
||
/* we're done, get stream stats now */
|
||
avi->have_index = gst_avi_demux_do_index_stats (avi);
|
||
|
||
return TRUE;
|
||
}
|
||
}
|
||
|
||
/* seek to next index */
|
||
return perform_seek_to_offset (avi, avi->odml_subidxs[avi->odml_subidx],
|
||
avi->segment_seqnum);
|
||
}
|
||
|
||
/*
|
||
* Read AVI index
|
||
*/
|
||
static void
|
||
gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
|
||
{
|
||
guint32 tag;
|
||
GstBuffer *buf;
|
||
gint i, n;
|
||
|
||
GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
|
||
|
||
for (n = 0; n < avi->num_streams; n++) {
|
||
GstAviStream *stream = &avi->stream[n];
|
||
|
||
if (stream->indexes == NULL)
|
||
continue;
|
||
|
||
for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
|
||
if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
|
||
&stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
|
||
continue;
|
||
else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
|
||
'0' + stream->num % 10)) &&
|
||
(tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
|
||
'0' + stream->num % 10, 'i', 'x'))) {
|
||
/* Some ODML files (created by god knows what muxer) have a ##ix format
|
||
* instead of the 'official' ix##. They are still valid though. */
|
||
GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
|
||
GST_FOURCC_ARGS (tag));
|
||
gst_buffer_unref (buf);
|
||
continue;
|
||
}
|
||
|
||
if (!gst_avi_demux_parse_subindex (avi, stream, buf))
|
||
continue;
|
||
}
|
||
|
||
g_free (stream->indexes);
|
||
stream->indexes = NULL;
|
||
}
|
||
/* get stream stats now */
|
||
avi->have_index = gst_avi_demux_do_index_stats (avi);
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_riff_parse_vprp:
|
||
* @element: caller element (used for debugging/error).
|
||
* @buf: input data to be used for parsing, stripped from header.
|
||
* @vprp: a pointer (returned by this function) to a filled-in vprp
|
||
* structure. Caller should free it.
|
||
*
|
||
* Parses a video stream´s vprp. This function takes ownership of @buf.
|
||
*
|
||
* Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
|
||
* should be skipped on error, but it is not fatal.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_riff_parse_vprp (GstElement * element,
|
||
GstBuffer * buf, gst_riff_vprp ** _vprp)
|
||
{
|
||
gst_riff_vprp *vprp;
|
||
gint k;
|
||
gsize size;
|
||
|
||
g_return_val_if_fail (buf != NULL, FALSE);
|
||
g_return_val_if_fail (_vprp != NULL, FALSE);
|
||
|
||
size = gst_buffer_get_size (buf);
|
||
|
||
if (size < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
|
||
goto too_small;
|
||
|
||
vprp = g_malloc (size);
|
||
gst_buffer_extract (buf, 0, vprp, size);
|
||
|
||
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
|
||
vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
|
||
vprp->standard = GUINT32_FROM_LE (vprp->standard);
|
||
vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
|
||
vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
|
||
vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
|
||
vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
|
||
vprp->width = GUINT32_FROM_LE (vprp->width);
|
||
vprp->height = GUINT32_FROM_LE (vprp->height);
|
||
vprp->fields = GUINT32_FROM_LE (vprp->fields);
|
||
#endif
|
||
|
||
/* size checking */
|
||
/* calculate fields based on size */
|
||
k = (size - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) / vprp->fields;
|
||
if (vprp->fields > k) {
|
||
GST_WARNING_OBJECT (element,
|
||
"vprp header indicated %d fields, only %d available", vprp->fields, k);
|
||
vprp->fields = k;
|
||
}
|
||
if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
|
||
GST_WARNING_OBJECT (element,
|
||
"vprp header indicated %d fields, at most %d supported", vprp->fields,
|
||
GST_RIFF_VPRP_VIDEO_FIELDS);
|
||
vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
|
||
}
|
||
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
|
||
for (k = 0; k < vprp->fields; k++) {
|
||
gst_riff_vprp_video_field_desc *fd;
|
||
|
||
fd = &vprp->field_info[k];
|
||
fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
|
||
fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
|
||
fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
|
||
fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
|
||
fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
|
||
fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
|
||
fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
|
||
fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
|
||
}
|
||
#endif
|
||
|
||
/* debug */
|
||
GST_INFO_OBJECT (element, "vprp tag found in context vids:");
|
||
GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
|
||
GST_INFO_OBJECT (element, " standard %d", vprp->standard);
|
||
GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
|
||
GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
|
||
GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
|
||
GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
|
||
vprp->aspect & 0xffff);
|
||
GST_INFO_OBJECT (element, " width %d", vprp->width);
|
||
GST_INFO_OBJECT (element, " height %d", vprp->height);
|
||
GST_INFO_OBJECT (element, " fields %d", vprp->fields);
|
||
for (k = 0; k < vprp->fields; k++) {
|
||
gst_riff_vprp_video_field_desc *fd;
|
||
|
||
fd = &(vprp->field_info[k]);
|
||
GST_INFO_OBJECT (element, " field %u description:", k);
|
||
GST_INFO_OBJECT (element, " compressed_bm_height %d",
|
||
fd->compressed_bm_height);
|
||
GST_INFO_OBJECT (element, " compressed_bm_width %d",
|
||
fd->compressed_bm_width);
|
||
GST_INFO_OBJECT (element, " valid_bm_height %d",
|
||
fd->valid_bm_height);
|
||
GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
|
||
GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
|
||
fd->valid_bm_x_offset);
|
||
GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
|
||
fd->valid_bm_y_offset);
|
||
GST_INFO_OBJECT (element, " video_x_t_offset %d",
|
||
fd->video_x_t_offset);
|
||
GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
|
||
}
|
||
|
||
gst_buffer_unref (buf);
|
||
|
||
*_vprp = vprp;
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
too_small:
|
||
{
|
||
GST_ERROR_OBJECT (element,
|
||
"Too small vprp (%" G_GSIZE_FORMAT " available, at least %d needed)",
|
||
size, (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
|
||
{
|
||
guint i;
|
||
|
||
GST_DEBUG_OBJECT (avi, "force : %d", force);
|
||
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
GstAviStream *stream = &avi->stream[i];
|
||
|
||
if (force || stream->idx_n != 0) {
|
||
GST_LOG_OBJECT (avi, "Adding pad %s", GST_PAD_NAME (stream->pad));
|
||
gst_element_add_pad ((GstElement *) avi, stream->pad);
|
||
gst_flow_combiner_add_pad (avi->flowcombiner, stream->pad);
|
||
|
||
#if 0
|
||
if (avi->element_index)
|
||
gst_index_get_writer_id (avi->element_index,
|
||
GST_OBJECT_CAST (stream->pad), &stream->index_id);
|
||
#endif
|
||
|
||
stream->exposed = TRUE;
|
||
if (avi->main_stream == -1)
|
||
avi->main_stream = i;
|
||
} else {
|
||
GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
|
||
i);
|
||
gst_avi_demux_reset_stream (avi, stream);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* buf contains LIST chunk data, and will be padded to even size,
|
||
* since some buggy files do not account for the padding of chunks
|
||
* within a LIST in the size of the LIST */
|
||
static inline void
|
||
gst_avi_demux_roundup_list (GstAviDemux * avi, GstBuffer ** buf)
|
||
{
|
||
gsize size;
|
||
|
||
size = gst_buffer_get_size (*buf);
|
||
|
||
if (G_UNLIKELY (size & 1)) {
|
||
GstBuffer *obuf;
|
||
GstMapInfo map;
|
||
|
||
GST_DEBUG_OBJECT (avi, "rounding up dubious list size %" G_GSIZE_FORMAT,
|
||
size);
|
||
obuf = gst_buffer_new_and_alloc (size + 1);
|
||
|
||
gst_buffer_map (obuf, &map, GST_MAP_WRITE);
|
||
gst_buffer_extract (*buf, 0, map.data, size);
|
||
/* assume 0 padding, at least makes outcome deterministic */
|
||
map.data[size] = 0;
|
||
gst_buffer_unmap (obuf, &map);
|
||
gst_buffer_replace (buf, obuf);
|
||
}
|
||
}
|
||
|
||
static GstCaps *
|
||
gst_avi_demux_check_caps (GstAviDemux * avi, GstAviStream * stream,
|
||
GstCaps * caps)
|
||
{
|
||
GstStructure *s;
|
||
const GValue *val;
|
||
GstBuffer *buf;
|
||
|
||
caps = gst_caps_make_writable (caps);
|
||
|
||
s = gst_caps_get_structure (caps, 0);
|
||
if (gst_structure_has_name (s, "video/x-raw")) {
|
||
stream->is_raw = TRUE;
|
||
stream->alignment = 32;
|
||
if (!gst_structure_has_field (s, "pixel-aspect-ratio"))
|
||
gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
||
1, 1, NULL);
|
||
if (gst_structure_has_field_typed (s, "palette_data", GST_TYPE_BUFFER)) {
|
||
gst_structure_get (s, "palette_data", GST_TYPE_BUFFER,
|
||
&stream->rgb8_palette, NULL);
|
||
gst_structure_remove_field (s, "palette_data");
|
||
return caps;
|
||
}
|
||
} else if (!gst_structure_has_name (s, "video/x-h264")) {
|
||
return caps;
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (avi, "checking caps %" GST_PTR_FORMAT, caps);
|
||
|
||
/* some muxers put invalid bytestream stuff in h264 extra data */
|
||
val = gst_structure_get_value (s, "codec_data");
|
||
if (val && (buf = gst_value_get_buffer (val))) {
|
||
guint8 *data;
|
||
gint size;
|
||
GstMapInfo map;
|
||
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
data = map.data;
|
||
size = map.size;
|
||
if (size >= 4) {
|
||
guint32 h = GST_READ_UINT32_BE (data);
|
||
gst_buffer_unmap (buf, &map);
|
||
if (h == 0x01) {
|
||
/* can hardly be valid AVC codec data */
|
||
GST_DEBUG_OBJECT (avi,
|
||
"discarding invalid codec_data containing byte-stream");
|
||
/* so do not pretend to downstream that it is packetized avc */
|
||
gst_structure_remove_field (s, "codec_data");
|
||
/* ... but rather properly parsed bytestream */
|
||
gst_structure_set (s, "stream-format", G_TYPE_STRING, "byte-stream",
|
||
"alignment", G_TYPE_STRING, "au", NULL);
|
||
}
|
||
} else {
|
||
gst_buffer_unmap (buf, &map);
|
||
}
|
||
}
|
||
|
||
return caps;
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_stream:
|
||
* @avi: calling element (used for debugging/errors).
|
||
* @buf: input buffer used to parse the stream.
|
||
*
|
||
* Parses all subchunks in a strl chunk (which defines a single
|
||
* stream). Discards the buffer after use. This function will
|
||
* increment the stream counter internally.
|
||
*
|
||
* Returns: whether the stream was identified successfully.
|
||
* Errors are not fatal. It does indicate the stream
|
||
* was skipped.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
|
||
{
|
||
GstAviStream *stream;
|
||
GstElementClass *klass;
|
||
GstPadTemplate *templ;
|
||
GstBuffer *sub = NULL;
|
||
guint offset = 4;
|
||
guint32 tag = 0;
|
||
gchar *codec_name = NULL, *padname = NULL;
|
||
const gchar *tag_name;
|
||
GstCaps *caps = NULL;
|
||
GstPad *pad;
|
||
GstElement *element;
|
||
gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
|
||
gst_riff_vprp *vprp = NULL;
|
||
GstEvent *event;
|
||
gchar *stream_id;
|
||
GstMapInfo map;
|
||
gboolean sparse = FALSE;
|
||
|
||
element = GST_ELEMENT_CAST (avi);
|
||
|
||
GST_DEBUG_OBJECT (avi, "Parsing stream");
|
||
|
||
gst_avi_demux_roundup_list (avi, &buf);
|
||
|
||
if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"maximum no of streams (%d) exceeded, ignoring stream",
|
||
GST_AVI_DEMUX_MAX_STREAMS);
|
||
gst_buffer_unref (buf);
|
||
/* not a fatal error, let's say */
|
||
return TRUE;
|
||
}
|
||
|
||
stream = &avi->stream[avi->num_streams];
|
||
|
||
/* initial settings */
|
||
stream->idx_duration = GST_CLOCK_TIME_NONE;
|
||
stream->hdr_duration = GST_CLOCK_TIME_NONE;
|
||
stream->duration = GST_CLOCK_TIME_NONE;
|
||
|
||
while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
|
||
/* sub can be NULL if the chunk is empty */
|
||
if (sub == NULL) {
|
||
GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (tag));
|
||
continue;
|
||
}
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_strh:
|
||
{
|
||
gst_riff_strh *strh;
|
||
|
||
if (got_strh) {
|
||
GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
|
||
break;
|
||
}
|
||
if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
|
||
/* ownership given away */
|
||
sub = NULL;
|
||
GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
|
||
goto fail;
|
||
}
|
||
sub = NULL;
|
||
strh = stream->strh;
|
||
/* sanity check; stream header frame rate matches global header
|
||
* frame duration */
|
||
if (stream->strh->type == GST_RIFF_FCC_vids) {
|
||
GstClockTime s_dur;
|
||
GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
|
||
|
||
s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
|
||
GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
|
||
"frame duration = %d ms", strh->rate, strh->scale,
|
||
(gint) (s_dur / GST_MSECOND));
|
||
if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
|
||
strh->rate = GST_SECOND / GST_USECOND;
|
||
strh->scale = h_dur / GST_USECOND;
|
||
GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
|
||
strh->rate, strh->scale);
|
||
}
|
||
}
|
||
/* determine duration as indicated by header */
|
||
stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
|
||
strh->scale, GST_SECOND, (guint64) strh->rate);
|
||
GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
|
||
GST_TIME_ARGS (stream->hdr_duration));
|
||
if (stream->hdr_duration == 0)
|
||
stream->hdr_duration = GST_CLOCK_TIME_NONE;
|
||
|
||
got_strh = TRUE;
|
||
break;
|
||
}
|
||
case GST_RIFF_TAG_strf:
|
||
{
|
||
gboolean res = FALSE;
|
||
|
||
if (got_strf) {
|
||
GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
|
||
break;
|
||
}
|
||
if (!got_strh) {
|
||
GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
|
||
goto fail;
|
||
}
|
||
switch (stream->strh->type) {
|
||
case GST_RIFF_FCC_vids:
|
||
stream->is_vbr = TRUE;
|
||
res = gst_riff_parse_strf_vids (element, sub,
|
||
&stream->strf.vids, &stream->extradata);
|
||
sub = NULL;
|
||
GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
|
||
break;
|
||
case GST_RIFF_FCC_auds:
|
||
res =
|
||
gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
|
||
&stream->extradata);
|
||
sub = NULL;
|
||
if (!res)
|
||
break;
|
||
stream->is_vbr = (stream->strh->samplesize == 0)
|
||
&& stream->strh->scale > 1
|
||
&& stream->strf.auds->blockalign != 1;
|
||
GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
|
||
stream->is_vbr, res);
|
||
/* we need these or we have no way to come up with timestamps */
|
||
if ((!stream->is_vbr && !stream->strf.auds->av_bps) ||
|
||
(stream->is_vbr && (!stream->strh->scale ||
|
||
!stream->strh->rate))) {
|
||
GST_WARNING_OBJECT (element,
|
||
"invalid audio header, ignoring stream");
|
||
goto fail;
|
||
}
|
||
/* some more sanity checks */
|
||
if (stream->is_vbr) {
|
||
if (stream->strf.auds->blockalign <= 4) {
|
||
/* that would mean (too) many frames per chunk,
|
||
* so not likely set as expected */
|
||
GST_DEBUG_OBJECT (element,
|
||
"suspicious blockalign %d for VBR audio; "
|
||
"overriding to 1 frame per chunk",
|
||
stream->strf.auds->blockalign);
|
||
/* this should top any likely value */
|
||
stream->strf.auds->blockalign = (1 << 12);
|
||
}
|
||
}
|
||
break;
|
||
case GST_RIFF_FCC_iavs:
|
||
stream->is_vbr = TRUE;
|
||
res = gst_riff_parse_strf_iavs (element, sub,
|
||
&stream->strf.iavs, &stream->extradata);
|
||
sub = NULL;
|
||
GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
|
||
break;
|
||
case GST_RIFF_FCC_txts:
|
||
/* nothing to parse here */
|
||
stream->is_vbr = (stream->strh->samplesize == 0)
|
||
&& (stream->strh->scale > 1);
|
||
res = TRUE;
|
||
break;
|
||
default:
|
||
GST_ERROR_OBJECT (avi,
|
||
"Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (stream->strh->type));
|
||
break;
|
||
}
|
||
if (sub) {
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
}
|
||
if (!res)
|
||
goto fail;
|
||
got_strf = TRUE;
|
||
break;
|
||
}
|
||
case GST_RIFF_TAG_vprp:
|
||
{
|
||
if (got_vprp) {
|
||
GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
|
||
break;
|
||
}
|
||
if (!got_strh) {
|
||
GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
|
||
goto fail;
|
||
}
|
||
if (!got_strf) {
|
||
GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
|
||
goto fail;
|
||
}
|
||
|
||
if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
|
||
GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
|
||
/* not considered fatal */
|
||
g_free (vprp);
|
||
vprp = NULL;
|
||
} else
|
||
got_vprp = TRUE;
|
||
sub = NULL;
|
||
break;
|
||
}
|
||
case GST_RIFF_TAG_strd:
|
||
if (stream->initdata)
|
||
gst_buffer_unref (stream->initdata);
|
||
stream->initdata = sub;
|
||
if (sub != NULL) {
|
||
gst_avi_demux_parse_strd (avi, sub);
|
||
sub = NULL;
|
||
}
|
||
break;
|
||
case GST_RIFF_TAG_strn:
|
||
{
|
||
gchar *stream_name = NULL;
|
||
|
||
gst_buffer_map (sub, &map, GST_MAP_READ);
|
||
|
||
if (avi->globaltags == NULL)
|
||
avi->globaltags = gst_tag_list_new_empty ();
|
||
parse_tag_value (avi, avi->globaltags, GST_TAG_TITLE,
|
||
map.data, map.size);
|
||
|
||
if (gst_tag_list_get_string (avi->globaltags, GST_TAG_TITLE,
|
||
&stream_name)) {
|
||
GST_DEBUG_OBJECT (avi, "stream name: %s", stream_name);
|
||
g_free (stream->name);
|
||
stream->name = stream_name;
|
||
}
|
||
|
||
gst_buffer_unmap (sub, &map);
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
}
|
||
break;
|
||
case GST_RIFF_IDIT:
|
||
gst_avi_demux_parse_idit (avi, sub);
|
||
break;
|
||
default:
|
||
if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
|
||
tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
|
||
'0' + avi->num_streams % 10)) {
|
||
g_free (stream->indexes);
|
||
gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
|
||
stream->superindex = TRUE;
|
||
sub = NULL;
|
||
break;
|
||
}
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
|
||
GST_FOURCC_ARGS (tag));
|
||
/* Only get buffer for debugging if the memdump is needed */
|
||
if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
|
||
GstMapInfo map;
|
||
|
||
gst_buffer_map (sub, &map, GST_MAP_READ);
|
||
GST_MEMDUMP_OBJECT (avi, "Unknown stream header tag", map.data,
|
||
map.size);
|
||
gst_buffer_unmap (sub, &map);
|
||
}
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNQ:
|
||
case GST_RIFF_TAG_JUNK:
|
||
break;
|
||
}
|
||
if (sub != NULL) {
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
}
|
||
}
|
||
|
||
if (!got_strh) {
|
||
GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
|
||
goto fail;
|
||
}
|
||
|
||
if (!got_strf) {
|
||
GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
|
||
goto fail;
|
||
}
|
||
|
||
/* get class to figure out the template */
|
||
klass = GST_ELEMENT_GET_CLASS (avi);
|
||
|
||
/* we now have all info, let´s set up a pad and a caps and be done */
|
||
/* create stream name + pad */
|
||
switch (stream->strh->type) {
|
||
case GST_RIFF_FCC_vids:{
|
||
guint32 fourcc;
|
||
|
||
fourcc = (stream->strf.vids->compression) ?
|
||
stream->strf.vids->compression : stream->strh->fcc_handler;
|
||
caps = gst_riff_create_video_caps (fourcc, stream->strh,
|
||
stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
|
||
|
||
/* DXSB is XSUB, and it is placed inside a vids */
|
||
if (!caps || (fourcc != GST_MAKE_FOURCC ('D', 'X', 'S', 'B') &&
|
||
fourcc != GST_MAKE_FOURCC ('D', 'X', 'S', 'A'))) {
|
||
padname = g_strdup_printf ("video_%u", avi->num_v_streams);
|
||
templ = gst_element_class_get_pad_template (klass, "video_%u");
|
||
if (!caps) {
|
||
caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
|
||
G_TYPE_INT, fourcc, NULL);
|
||
} else if (got_vprp && vprp) {
|
||
guint32 aspect_n, aspect_d;
|
||
gint n, d;
|
||
|
||
aspect_n = vprp->aspect >> 16;
|
||
aspect_d = vprp->aspect & 0xffff;
|
||
/* calculate the pixel aspect ratio using w/h and aspect ratio */
|
||
n = aspect_n * stream->strf.vids->height;
|
||
d = aspect_d * stream->strf.vids->width;
|
||
if (n && d)
|
||
gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
||
n, d, NULL);
|
||
}
|
||
caps = gst_avi_demux_check_caps (avi, stream, caps);
|
||
tag_name = GST_TAG_VIDEO_CODEC;
|
||
avi->num_v_streams++;
|
||
} else {
|
||
padname = g_strdup_printf ("subpicture_%u", avi->num_sp_streams);
|
||
templ = gst_element_class_get_pad_template (klass, "subpicture_%u");
|
||
tag_name = NULL;
|
||
avi->num_sp_streams++;
|
||
sparse = TRUE;
|
||
}
|
||
break;
|
||
}
|
||
case GST_RIFF_FCC_auds:{
|
||
/* FIXME: Do something with the channel reorder map */
|
||
padname = g_strdup_printf ("audio_%u", avi->num_a_streams);
|
||
templ = gst_element_class_get_pad_template (klass, "audio_%u");
|
||
caps = gst_riff_create_audio_caps (stream->strf.auds->format,
|
||
stream->strh, stream->strf.auds, stream->extradata,
|
||
stream->initdata, &codec_name, NULL);
|
||
if (!caps) {
|
||
caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
|
||
G_TYPE_INT, stream->strf.auds->format, NULL);
|
||
}
|
||
tag_name = GST_TAG_AUDIO_CODEC;
|
||
avi->num_a_streams++;
|
||
break;
|
||
}
|
||
case GST_RIFF_FCC_iavs:{
|
||
guint32 fourcc = stream->strh->fcc_handler;
|
||
|
||
padname = g_strdup_printf ("video_%u", avi->num_v_streams);
|
||
templ = gst_element_class_get_pad_template (klass, "video_%u");
|
||
caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
|
||
stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
|
||
if (!caps) {
|
||
caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
|
||
G_TYPE_INT, fourcc, NULL);
|
||
}
|
||
tag_name = GST_TAG_VIDEO_CODEC;
|
||
avi->num_v_streams++;
|
||
break;
|
||
}
|
||
case GST_RIFF_FCC_txts:{
|
||
padname = g_strdup_printf ("subtitle_%u", avi->num_t_streams);
|
||
templ = gst_element_class_get_pad_template (klass, "subtitle_%u");
|
||
caps = gst_caps_new_empty_simple ("application/x-subtitle-avi");
|
||
tag_name = NULL;
|
||
avi->num_t_streams++;
|
||
sparse = TRUE;
|
||
break;
|
||
}
|
||
default:
|
||
g_return_val_if_reached (FALSE);
|
||
}
|
||
|
||
/* no caps means no stream */
|
||
if (!caps) {
|
||
GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
|
||
goto fail;
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (element, "codec-name=%s", codec_name ? codec_name : "NULL");
|
||
GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
|
||
|
||
/* set proper settings and add it */
|
||
if (stream->pad)
|
||
gst_object_unref (stream->pad);
|
||
pad = stream->pad = gst_pad_new_from_template (templ, padname);
|
||
g_free (padname);
|
||
|
||
gst_pad_use_fixed_caps (pad);
|
||
#if 0
|
||
gst_pad_set_formats_function (pad,
|
||
GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
|
||
gst_pad_set_event_mask_function (pad,
|
||
GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
|
||
#endif
|
||
gst_pad_set_event_function (pad,
|
||
GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
|
||
gst_pad_set_query_function (pad,
|
||
GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
|
||
#if 0
|
||
gst_pad_set_convert_function (pad,
|
||
GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
|
||
#endif
|
||
|
||
stream->num = avi->num_streams;
|
||
|
||
stream->start_entry = 0;
|
||
stream->step_entry = 0;
|
||
stream->stop_entry = 0;
|
||
|
||
stream->current_entry = -1;
|
||
stream->current_total = 0;
|
||
|
||
stream->discont = TRUE;
|
||
|
||
stream->total_bytes = 0;
|
||
stream->total_blocks = 0;
|
||
stream->n_keyframes = 0;
|
||
|
||
stream->idx_n = 0;
|
||
stream->idx_max = 0;
|
||
|
||
gst_pad_set_element_private (pad, stream);
|
||
avi->num_streams++;
|
||
|
||
gst_pad_set_active (pad, TRUE);
|
||
stream_id =
|
||
gst_pad_create_stream_id_printf (pad, GST_ELEMENT_CAST (avi), "%03u",
|
||
avi->num_streams);
|
||
|
||
event = gst_pad_get_sticky_event (avi->sinkpad, GST_EVENT_STREAM_START, 0);
|
||
if (event) {
|
||
if (gst_event_parse_group_id (event, &avi->group_id))
|
||
avi->have_group_id = TRUE;
|
||
else
|
||
avi->have_group_id = FALSE;
|
||
gst_event_unref (event);
|
||
} else if (!avi->have_group_id) {
|
||
avi->have_group_id = TRUE;
|
||
avi->group_id = gst_util_group_id_next ();
|
||
}
|
||
|
||
event = gst_event_new_stream_start (stream_id);
|
||
if (avi->have_group_id)
|
||
gst_event_set_group_id (event, avi->group_id);
|
||
if (sparse)
|
||
gst_event_set_stream_flags (event, GST_STREAM_FLAG_SPARSE);
|
||
|
||
gst_pad_push_event (pad, event);
|
||
g_free (stream_id);
|
||
gst_pad_set_caps (pad, caps);
|
||
gst_caps_unref (caps);
|
||
|
||
/* make tags */
|
||
if (codec_name && tag_name) {
|
||
if (!stream->taglist)
|
||
stream->taglist = gst_tag_list_new_empty ();
|
||
|
||
avi->got_tags = TRUE;
|
||
|
||
gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
|
||
codec_name, NULL);
|
||
}
|
||
|
||
g_free (vprp);
|
||
g_free (codec_name);
|
||
gst_buffer_unref (buf);
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
fail:
|
||
{
|
||
/* unref any mem that may be in use */
|
||
if (buf)
|
||
gst_buffer_unref (buf);
|
||
if (sub)
|
||
gst_buffer_unref (sub);
|
||
g_free (vprp);
|
||
g_free (codec_name);
|
||
gst_avi_demux_reset_stream (avi, stream);
|
||
avi->num_streams++;
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_odml:
|
||
* @avi: calling element (used for debug/error).
|
||
* @buf: input buffer to be used for parsing.
|
||
*
|
||
* Read an openDML-2.0 extension header. Fills in the frame number
|
||
* in the avi demuxer object when reading succeeds.
|
||
*/
|
||
static void
|
||
gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
|
||
{
|
||
guint32 tag = 0;
|
||
guint offset = 4;
|
||
GstBuffer *sub = NULL;
|
||
|
||
while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
|
||
&sub)) {
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_dmlh:{
|
||
gst_riff_dmlh dmlh, *_dmlh;
|
||
GstMapInfo map;
|
||
|
||
/* sub == NULL is possible and means an empty buffer */
|
||
if (sub == NULL)
|
||
goto next;
|
||
|
||
gst_buffer_map (sub, &map, GST_MAP_READ);
|
||
|
||
/* check size */
|
||
if (map.size < sizeof (gst_riff_dmlh)) {
|
||
GST_ERROR_OBJECT (avi,
|
||
"DMLH entry is too small (%" G_GSIZE_FORMAT " bytes, %d needed)",
|
||
map.size, (int) sizeof (gst_riff_dmlh));
|
||
gst_buffer_unmap (sub, &map);
|
||
goto next;
|
||
}
|
||
_dmlh = (gst_riff_dmlh *) map.data;
|
||
dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
|
||
gst_buffer_unmap (sub, &map);
|
||
|
||
GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
|
||
dmlh.totalframes);
|
||
|
||
avi->avih->tot_frames = dmlh.totalframes;
|
||
goto next;
|
||
}
|
||
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
|
||
GST_FOURCC_ARGS (tag));
|
||
/* Only get buffer for debugging if the memdump is needed */
|
||
if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
|
||
GstMapInfo map;
|
||
|
||
gst_buffer_map (sub, &map, GST_MAP_READ);
|
||
GST_MEMDUMP_OBJECT (avi, "Unknown ODML tag", map.data, map.size);
|
||
gst_buffer_unmap (sub, &map);
|
||
}
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNQ:
|
||
case GST_RIFF_TAG_JUNK:
|
||
next:
|
||
/* skip and move to next chunk */
|
||
if (sub) {
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
if (buf)
|
||
gst_buffer_unref (buf);
|
||
}
|
||
|
||
/* Index helper */
|
||
static guint
|
||
gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
|
||
{
|
||
return stream->idx_n;
|
||
}
|
||
|
||
/* find a previous entry in the index with the given flags */
|
||
static guint
|
||
gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
|
||
guint last, gboolean keyframe)
|
||
{
|
||
GstAviIndexEntry *entry;
|
||
guint i;
|
||
|
||
for (i = last; i > 0; i--) {
|
||
entry = &stream->index[i - 1];
|
||
if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
|
||
return i - 1;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static guint
|
||
gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
|
||
guint last, gboolean keyframe)
|
||
{
|
||
GstAviIndexEntry *entry;
|
||
gint i;
|
||
|
||
for (i = last + 1; i < stream->idx_n; i++) {
|
||
entry = &stream->index[i];
|
||
if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
|
||
return i;
|
||
}
|
||
}
|
||
return stream->idx_n - 1;
|
||
}
|
||
|
||
static guint
|
||
gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
|
||
{
|
||
if (entry->total < *total)
|
||
return -1;
|
||
else if (entry->total > *total)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_index_for_time:
|
||
* @avi: Avi object
|
||
* @stream: the stream
|
||
* @time: a time position
|
||
* @next: whether to look for entry before or after @time
|
||
*
|
||
* Finds the index entry which time is less/more or equal than the requested time.
|
||
* Try to avoid binary search when we can convert the time to an index
|
||
* position directly (for example for video frames with a fixed duration).
|
||
*
|
||
* Returns: the found position in the index.
|
||
*/
|
||
static guint
|
||
gst_avi_demux_index_for_time (GstAviDemux * avi,
|
||
GstAviStream * stream, guint64 time, gboolean next)
|
||
{
|
||
guint index = -1;
|
||
guint64 total;
|
||
|
||
GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
|
||
|
||
/* easy (and common) cases */
|
||
if (time == 0 || stream->idx_n == 0)
|
||
return 0;
|
||
if (time >= stream->idx_duration)
|
||
return stream->idx_n - 1;
|
||
|
||
/* figure out where we need to go. For that we convert the time to an
|
||
* index entry or we convert it to a total and then do a binary search. */
|
||
if (stream->is_vbr) {
|
||
/* VBR stream next timestamp */
|
||
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
||
total = avi_stream_convert_time_to_frames_unchecked (stream, time);
|
||
} else {
|
||
index = avi_stream_convert_time_to_frames_unchecked (stream, time);
|
||
/* this entry typically undershoots the target time,
|
||
* so check a bit more if next needed */
|
||
if (next && index != -1) {
|
||
GstClockTime itime =
|
||
avi_stream_convert_frames_to_time_unchecked (stream, index);
|
||
if (itime < time && index + 1 < stream->idx_n)
|
||
index++;
|
||
}
|
||
}
|
||
} else if (stream->strh->type == GST_RIFF_FCC_auds) {
|
||
/* constant rate stream */
|
||
total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
|
||
} else
|
||
return -1;
|
||
|
||
if (index == -1) {
|
||
GstAviIndexEntry *entry;
|
||
|
||
/* no index, find index with binary search on total */
|
||
GST_LOG_OBJECT (avi, "binary search for entry with total %"
|
||
G_GUINT64_FORMAT, total);
|
||
|
||
entry = gst_util_array_binary_search (stream->index,
|
||
stream->idx_n, sizeof (GstAviIndexEntry),
|
||
(GCompareDataFunc) gst_avi_demux_index_entry_search,
|
||
next ? GST_SEARCH_MODE_AFTER : GST_SEARCH_MODE_BEFORE, &total, NULL);
|
||
|
||
if (entry == NULL) {
|
||
GST_LOG_OBJECT (avi, "not found, assume index 0");
|
||
index = 0;
|
||
} else {
|
||
index = entry - stream->index;
|
||
GST_LOG_OBJECT (avi, "found at %u", index);
|
||
}
|
||
} else {
|
||
GST_LOG_OBJECT (avi, "converted time to index %u", index);
|
||
}
|
||
|
||
return index;
|
||
}
|
||
|
||
static inline GstAviStream *
|
||
gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
|
||
{
|
||
guint stream_nr;
|
||
GstAviStream *stream;
|
||
|
||
/* get the stream for this entry */
|
||
stream_nr = CHUNKID_TO_STREAMNR (id);
|
||
if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"invalid stream nr %d (0x%08x, %" GST_FOURCC_FORMAT ")", stream_nr, id,
|
||
GST_FOURCC_ARGS (id));
|
||
return NULL;
|
||
}
|
||
stream = &avi->stream[stream_nr];
|
||
if (G_UNLIKELY (!stream->strh)) {
|
||
GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
|
||
return NULL;
|
||
}
|
||
return stream;
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_index:
|
||
* @avi: calling element (used for debugging/errors).
|
||
* @buf: buffer containing the full index.
|
||
*
|
||
* Read index entries from the provided buffer.
|
||
* The buffer should contain a GST_RIFF_TAG_idx1 chunk.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
|
||
{
|
||
GstMapInfo map;
|
||
guint i, num, n;
|
||
gst_riff_index_entry *index;
|
||
GstClockTime stamp;
|
||
GstAviStream *stream;
|
||
GstAviIndexEntry entry;
|
||
guint32 id;
|
||
|
||
if (!buf)
|
||
return FALSE;
|
||
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
|
||
stamp = gst_util_get_timestamp ();
|
||
|
||
/* see how many items in the index */
|
||
num = map.size / sizeof (gst_riff_index_entry);
|
||
if (num == 0)
|
||
goto empty_list;
|
||
|
||
GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
|
||
|
||
index = (gst_riff_index_entry *) map.data;
|
||
|
||
/* figure out if the index is 0 based or relative to the MOVI start */
|
||
entry.offset = GST_READ_UINT32_LE (&index[0].offset);
|
||
if (entry.offset < avi->offset) {
|
||
avi->index_offset = avi->offset + 8;
|
||
GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
|
||
} else {
|
||
avi->index_offset = 0;
|
||
GST_DEBUG ("index is 0 based");
|
||
}
|
||
|
||
for (i = 0, n = 0; i < num; i++) {
|
||
id = GST_READ_UINT32_LE (&index[i].id);
|
||
entry.offset = GST_READ_UINT32_LE (&index[i].offset);
|
||
|
||
/* some sanity checks */
|
||
if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
|
||
(entry.offset == 0 && n > 0)))
|
||
continue;
|
||
|
||
/* get the stream for this entry */
|
||
stream = gst_avi_demux_stream_for_id (avi, id);
|
||
if (G_UNLIKELY (!stream))
|
||
continue;
|
||
|
||
/* handle offset and size */
|
||
entry.offset += avi->index_offset + 8;
|
||
entry.size = GST_READ_UINT32_LE (&index[i].size);
|
||
|
||
/* handle flags */
|
||
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
||
/* all audio frames are keyframes */
|
||
ENTRY_SET_KEYFRAME (&entry);
|
||
} else if (stream->strh->type == GST_RIFF_FCC_vids &&
|
||
stream->strf.vids->compression == GST_RIFF_DXSB) {
|
||
/* all xsub frames are keyframes */
|
||
ENTRY_SET_KEYFRAME (&entry);
|
||
} else {
|
||
guint32 flags;
|
||
/* else read flags */
|
||
flags = GST_READ_UINT32_LE (&index[i].flags);
|
||
if (flags & GST_RIFF_IF_KEYFRAME) {
|
||
ENTRY_SET_KEYFRAME (&entry);
|
||
} else {
|
||
ENTRY_UNSET_KEYFRAME (&entry);
|
||
}
|
||
}
|
||
|
||
/* and add */
|
||
if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
|
||
goto out_of_mem;
|
||
|
||
n++;
|
||
}
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
|
||
/* get stream stats now */
|
||
avi->have_index = gst_avi_demux_do_index_stats (avi);
|
||
|
||
stamp = gst_util_get_timestamp () - stamp;
|
||
GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
|
||
GST_TIME_ARGS (stamp));
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
empty_list:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "empty index");
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
out_of_mem:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
|
||
("Cannot allocate memory for %u*%u=%u bytes",
|
||
(guint) sizeof (GstAviIndexEntry), num,
|
||
(guint) sizeof (GstAviIndexEntry) * num));
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_stream_index:
|
||
* @avi: avi demuxer object.
|
||
*
|
||
* Seeks to index and reads it.
|
||
*/
|
||
static void
|
||
gst_avi_demux_stream_index (GstAviDemux * avi)
|
||
{
|
||
GstFlowReturn res;
|
||
guint64 offset = avi->offset;
|
||
GstBuffer *buf = NULL;
|
||
guint32 tag;
|
||
guint32 size;
|
||
GstMapInfo map;
|
||
|
||
GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
|
||
|
||
/* get chunk information */
|
||
res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_failed;
|
||
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
if (map.size < 8)
|
||
goto too_small;
|
||
|
||
/* check tag first before blindly trying to read 'size' bytes */
|
||
tag = GST_READ_UINT32_LE (map.data);
|
||
size = GST_READ_UINT32_LE (map.data + 4);
|
||
if (tag == GST_RIFF_TAG_LIST) {
|
||
/* this is the movi tag */
|
||
GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
|
||
(8 + GST_ROUND_UP_2 (size)));
|
||
offset += 8 + GST_ROUND_UP_2 (size);
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
|
||
buf = NULL;
|
||
res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_failed;
|
||
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
if (map.size < 8)
|
||
goto too_small;
|
||
|
||
tag = GST_READ_UINT32_LE (map.data);
|
||
size = GST_READ_UINT32_LE (map.data + 4);
|
||
}
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
|
||
if (tag != GST_RIFF_TAG_idx1)
|
||
goto no_index;
|
||
if (!size)
|
||
goto zero_index;
|
||
|
||
GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
|
||
|
||
/* read chunk, advance offset */
|
||
if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
|
||
avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
|
||
return;
|
||
|
||
GST_DEBUG ("will parse index chunk size %" G_GSIZE_FORMAT " for tag %"
|
||
GST_FOURCC_FORMAT, gst_buffer_get_size (buf), GST_FOURCC_ARGS (tag));
|
||
|
||
gst_avi_demux_parse_index (avi, buf);
|
||
|
||
#ifndef GST_DISABLE_GST_DEBUG
|
||
/* debug our indexes */
|
||
{
|
||
gint i;
|
||
GstAviStream *stream;
|
||
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
stream = &avi->stream[i];
|
||
GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
|
||
i, stream->idx_n, stream->total_bytes);
|
||
}
|
||
}
|
||
#endif
|
||
return;
|
||
|
||
/* ERRORS */
|
||
pull_failed:
|
||
{
|
||
GST_DEBUG_OBJECT (avi,
|
||
"pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
|
||
return;
|
||
}
|
||
too_small:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "Buffer is too small");
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
return;
|
||
}
|
||
no_index:
|
||
{
|
||
GST_WARNING_OBJECT (avi,
|
||
"No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (tag));
|
||
return;
|
||
}
|
||
zero_index:
|
||
{
|
||
GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
|
||
return;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_stream_index_push:
|
||
* @avi: avi demuxer object.
|
||
*
|
||
* Read index.
|
||
*/
|
||
static void
|
||
gst_avi_demux_stream_index_push (GstAviDemux * avi)
|
||
{
|
||
guint64 offset = avi->idx1_offset;
|
||
GstBuffer *buf;
|
||
guint32 tag;
|
||
guint32 size;
|
||
|
||
GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
|
||
|
||
/* get chunk information */
|
||
if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
|
||
return;
|
||
|
||
/* check tag first before blindly trying to read 'size' bytes */
|
||
if (tag == GST_RIFF_TAG_LIST) {
|
||
/* this is the movi tag */
|
||
GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
|
||
(8 + GST_ROUND_UP_2 (size)));
|
||
avi->idx1_offset = offset + 8 + GST_ROUND_UP_2 (size);
|
||
/* issue seek to allow chain function to handle it and return! */
|
||
perform_seek_to_offset (avi, avi->idx1_offset, avi->segment_seqnum);
|
||
return;
|
||
}
|
||
|
||
if (tag != GST_RIFF_TAG_idx1)
|
||
goto no_index;
|
||
|
||
GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
|
||
|
||
/* flush chunk header */
|
||
gst_adapter_flush (avi->adapter, 8);
|
||
/* read chunk payload */
|
||
buf = gst_adapter_take_buffer (avi->adapter, size);
|
||
if (!buf)
|
||
goto pull_failed;
|
||
/* advance offset */
|
||
offset += 8 + GST_ROUND_UP_2 (size);
|
||
|
||
GST_DEBUG ("will parse index chunk size %" G_GSIZE_FORMAT " for tag %"
|
||
GST_FOURCC_FORMAT, gst_buffer_get_size (buf), GST_FOURCC_ARGS (tag));
|
||
|
||
avi->offset = avi->first_movi_offset;
|
||
gst_avi_demux_parse_index (avi, buf);
|
||
|
||
#ifndef GST_DISABLE_GST_DEBUG
|
||
/* debug our indexes */
|
||
{
|
||
gint i;
|
||
GstAviStream *stream;
|
||
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
stream = &avi->stream[i];
|
||
GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
|
||
i, stream->idx_n, stream->total_bytes);
|
||
}
|
||
}
|
||
#endif
|
||
return;
|
||
|
||
/* ERRORS */
|
||
pull_failed:
|
||
{
|
||
GST_DEBUG_OBJECT (avi,
|
||
"taking data from adapter failed: pos=%" G_GUINT64_FORMAT " size=%u",
|
||
offset, size);
|
||
return;
|
||
}
|
||
no_index:
|
||
{
|
||
GST_WARNING_OBJECT (avi,
|
||
"No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (tag));
|
||
return;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_peek_tag:
|
||
*
|
||
* Returns the tag and size of the next chunk
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
|
||
guint * size)
|
||
{
|
||
GstFlowReturn res;
|
||
GstBuffer *buf = NULL;
|
||
GstMapInfo map;
|
||
|
||
res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_failed;
|
||
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
if (map.size != 8)
|
||
goto wrong_size;
|
||
|
||
*tag = GST_READ_UINT32_LE (map.data);
|
||
*size = GST_READ_UINT32_LE (map.data + 4);
|
||
|
||
GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
|
||
G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
|
||
*size, offset + 8, offset + 8 + (gint64) * size);
|
||
|
||
done:
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
|
||
return res;
|
||
|
||
/* ERRORS */
|
||
pull_failed:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
|
||
return res;
|
||
}
|
||
wrong_size:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "got %" G_GSIZE_FORMAT " bytes which is <> 8 bytes",
|
||
map.size);
|
||
res = GST_FLOW_ERROR;
|
||
goto done;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_next_data_buffer:
|
||
*
|
||
* Returns the offset and size of the next buffer
|
||
* Position is the position of the buffer (after tag and size)
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
|
||
guint32 * tag, guint * size)
|
||
{
|
||
guint64 off = *offset;
|
||
guint _size = 0;
|
||
GstFlowReturn res;
|
||
|
||
do {
|
||
res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
|
||
if (res != GST_FLOW_OK)
|
||
break;
|
||
if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
|
||
off += 8 + 4; /* skip tag + size + subtag */
|
||
else {
|
||
*offset = off + 8;
|
||
*size = _size;
|
||
break;
|
||
}
|
||
} while (TRUE);
|
||
|
||
return res;
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_stream_scan:
|
||
* @avi: calling element (used for debugging/errors).
|
||
*
|
||
* Scan the file for all chunks to "create" a new index.
|
||
* pull-range based
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_stream_scan (GstAviDemux * avi)
|
||
{
|
||
GstFlowReturn res;
|
||
GstAviStream *stream;
|
||
guint64 pos = 0;
|
||
guint64 length;
|
||
gint64 tmplength;
|
||
guint32 tag = 0;
|
||
guint num;
|
||
|
||
/* FIXME:
|
||
* - implement non-seekable source support.
|
||
*/
|
||
GST_DEBUG_OBJECT (avi, "Creating index");
|
||
|
||
/* get the size of the file */
|
||
if (!gst_pad_peer_query_duration (avi->sinkpad, GST_FORMAT_BYTES, &tmplength))
|
||
return FALSE;
|
||
length = tmplength;
|
||
|
||
/* guess the total amount of entries we expect */
|
||
num = 16000;
|
||
|
||
while (TRUE) {
|
||
GstAviIndexEntry entry;
|
||
guint size = 0;
|
||
|
||
/* start reading data buffers to find the id and offset */
|
||
res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
|
||
if (G_UNLIKELY (res != GST_FLOW_OK))
|
||
break;
|
||
|
||
/* get stream */
|
||
stream = gst_avi_demux_stream_for_id (avi, tag);
|
||
if (G_UNLIKELY (!stream))
|
||
goto next;
|
||
|
||
/* we can't figure out the keyframes, assume they all are */
|
||
entry.flags = GST_AVI_KEYFRAME;
|
||
entry.offset = pos;
|
||
entry.size = size;
|
||
|
||
/* and add to the index of this stream */
|
||
if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
|
||
goto out_of_mem;
|
||
|
||
next:
|
||
/* update position */
|
||
pos += GST_ROUND_UP_2 (size);
|
||
if (G_UNLIKELY (pos > length)) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Stopping index lookup since we are further than EOF");
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* collect stats */
|
||
avi->have_index = gst_avi_demux_do_index_stats (avi);
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
out_of_mem:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
|
||
("Cannot allocate memory for %u*%u=%u bytes",
|
||
(guint) sizeof (GstAviIndexEntry), num,
|
||
(guint) sizeof (GstAviIndexEntry) * num));
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
|
||
{
|
||
guint i;
|
||
GstClockTime total;
|
||
GstAviStream *stream;
|
||
|
||
total = GST_CLOCK_TIME_NONE;
|
||
|
||
/* all streams start at a timestamp 0 */
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
GstClockTime duration, hduration;
|
||
gst_riff_strh *strh;
|
||
|
||
stream = &avi->stream[i];
|
||
if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
|
||
continue;
|
||
|
||
/* get header duration for the stream */
|
||
hduration = stream->hdr_duration;
|
||
/* index duration calculated during parsing */
|
||
duration = stream->idx_duration;
|
||
|
||
/* now pick a good duration */
|
||
if (GST_CLOCK_TIME_IS_VALID (duration)) {
|
||
/* index gave valid duration, use that */
|
||
GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
|
||
stream, GST_TIME_ARGS (duration));
|
||
} else {
|
||
/* fall back to header info to calculate a duration */
|
||
duration = hduration;
|
||
}
|
||
GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
|
||
i, GST_TIME_ARGS (duration));
|
||
/* set duration for the stream */
|
||
stream->duration = duration;
|
||
|
||
/* find total duration */
|
||
if (total == GST_CLOCK_TIME_NONE ||
|
||
(GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
|
||
total = duration;
|
||
}
|
||
|
||
if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
|
||
/* now update the duration for those streams where we had none */
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
stream = &avi->stream[i];
|
||
|
||
if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
|
||
|| stream->duration == 0) {
|
||
stream->duration = total;
|
||
|
||
GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
|
||
stream, GST_TIME_ARGS (total));
|
||
}
|
||
}
|
||
}
|
||
|
||
/* and set the total duration in the segment. */
|
||
GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
|
||
GST_TIME_ARGS (total));
|
||
|
||
avi->segment.duration = total;
|
||
}
|
||
|
||
/* returns FALSE if there are no pads to deliver event to,
|
||
* otherwise TRUE (whatever the outcome of event sending),
|
||
* takes ownership of the event. */
|
||
static gboolean
|
||
gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
|
||
{
|
||
gboolean result = FALSE;
|
||
gint i;
|
||
|
||
GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
|
||
GST_EVENT_TYPE_NAME (event), avi->num_streams);
|
||
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
GstAviStream *stream = &avi->stream[i];
|
||
|
||
if (stream->pad) {
|
||
result = TRUE;
|
||
gst_pad_push_event (stream->pad, gst_event_ref (event));
|
||
}
|
||
}
|
||
gst_event_unref (event);
|
||
return result;
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_check_seekability (GstAviDemux * avi)
|
||
{
|
||
GstQuery *query;
|
||
gboolean seekable = FALSE;
|
||
gint64 start = -1, stop = -1;
|
||
|
||
query = gst_query_new_seeking (GST_FORMAT_BYTES);
|
||
if (!gst_pad_peer_query (avi->sinkpad, query)) {
|
||
GST_DEBUG_OBJECT (avi, "seeking query failed");
|
||
goto done;
|
||
}
|
||
|
||
gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
|
||
|
||
/* try harder to query upstream size if we didn't get it the first time */
|
||
if (seekable && stop == -1) {
|
||
GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
|
||
gst_pad_peer_query_duration (avi->sinkpad, GST_FORMAT_BYTES, &stop);
|
||
}
|
||
|
||
/* if upstream doesn't know the size, it's likely that it's not seekable in
|
||
* practice even if it technically may be seekable */
|
||
if (seekable && (start != 0 || stop <= start)) {
|
||
GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
|
||
seekable = FALSE;
|
||
}
|
||
|
||
done:
|
||
GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
|
||
G_GUINT64_FORMAT ")", seekable, start, stop);
|
||
avi->seekable = seekable;
|
||
|
||
gst_query_unref (query);
|
||
}
|
||
|
||
/*
|
||
* Read AVI headers when streaming
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_stream_header_push (GstAviDemux * avi)
|
||
{
|
||
GstFlowReturn ret = GST_FLOW_OK;
|
||
guint32 tag = 0;
|
||
guint32 ltag = 0;
|
||
guint32 size = 0;
|
||
const guint8 *data;
|
||
GstBuffer *buf = NULL, *sub = NULL;
|
||
guint offset = 4;
|
||
gint i;
|
||
GstTagList *tags = NULL;
|
||
guint8 fourcc[4];
|
||
|
||
GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
|
||
|
||
switch (avi->header_state) {
|
||
case GST_AVI_DEMUX_HEADER_TAG_LIST:
|
||
again:
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
||
avi->offset += 8 + GST_ROUND_UP_2 (size);
|
||
if (tag != GST_RIFF_TAG_LIST)
|
||
goto header_no_list;
|
||
|
||
gst_adapter_flush (avi->adapter, 8);
|
||
/* Find the 'hdrl' LIST tag */
|
||
GST_DEBUG ("Reading %d bytes", size);
|
||
buf = gst_adapter_take_buffer (avi->adapter, size);
|
||
|
||
gst_buffer_extract (buf, 0, fourcc, 4);
|
||
|
||
if (GST_READ_UINT32_LE (fourcc) != GST_RIFF_LIST_hdrl) {
|
||
GST_WARNING_OBJECT (avi, "Invalid AVI header (no hdrl at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag));
|
||
gst_buffer_unref (buf);
|
||
goto again;
|
||
}
|
||
|
||
/* mind padding */
|
||
if (size & 1)
|
||
gst_adapter_flush (avi->adapter, 1);
|
||
|
||
GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
|
||
|
||
gst_avi_demux_roundup_list (avi, &buf);
|
||
|
||
/* the hdrl starts with a 'avih' header */
|
||
if (!gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
|
||
&sub))
|
||
goto header_no_avih;
|
||
|
||
if (tag != GST_RIFF_TAG_avih)
|
||
goto header_no_avih;
|
||
|
||
if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
|
||
goto header_wrong_avih;
|
||
|
||
GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
|
||
|
||
/* now, read the elements from the header until the end */
|
||
while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
|
||
&sub)) {
|
||
/* sub can be NULL on empty tags */
|
||
if (!sub)
|
||
continue;
|
||
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_LIST:
|
||
if (gst_buffer_get_size (sub) < 4)
|
||
goto next;
|
||
|
||
gst_buffer_extract (sub, 0, fourcc, 4);
|
||
|
||
switch (GST_READ_UINT32_LE (fourcc)) {
|
||
case GST_RIFF_LIST_strl:
|
||
if (!(gst_avi_demux_parse_stream (avi, sub))) {
|
||
sub = NULL;
|
||
GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
|
||
("failed to parse stream, ignoring"));
|
||
goto next;
|
||
}
|
||
sub = NULL;
|
||
goto next;
|
||
case GST_RIFF_LIST_odml:
|
||
gst_avi_demux_parse_odml (avi, sub);
|
||
sub = NULL;
|
||
break;
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown list %" GST_FOURCC_FORMAT " in AVI header",
|
||
GST_FOURCC_ARGS (GST_READ_UINT32_LE (fourcc)));
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNQ:
|
||
case GST_RIFF_TAG_JUNK:
|
||
goto next;
|
||
}
|
||
break;
|
||
case GST_RIFF_IDIT:
|
||
gst_avi_demux_parse_idit (avi, sub);
|
||
goto next;
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown tag %" GST_FOURCC_FORMAT " in AVI header",
|
||
GST_FOURCC_ARGS (tag));
|
||
/* Only get buffer for debugging if the memdump is needed */
|
||
if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
|
||
GstMapInfo map;
|
||
|
||
gst_buffer_map (sub, &map, GST_MAP_READ);
|
||
GST_MEMDUMP_OBJECT (avi, "Unknown tag", map.data, map.size);
|
||
gst_buffer_unmap (sub, &map);
|
||
}
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNQ:
|
||
case GST_RIFF_TAG_JUNK:
|
||
next:
|
||
/* move to next chunk */
|
||
if (sub)
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
break;
|
||
}
|
||
}
|
||
gst_buffer_unref (buf);
|
||
GST_DEBUG ("elements parsed");
|
||
|
||
/* check parsed streams */
|
||
if (avi->num_streams == 0) {
|
||
goto no_streams;
|
||
} else if (avi->num_streams != avi->avih->streams) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Stream header mentioned %d streams, but %d available",
|
||
avi->avih->streams, avi->num_streams);
|
||
}
|
||
GST_DEBUG ("Get junk and info next");
|
||
avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
|
||
} else {
|
||
/* Need more data */
|
||
return ret;
|
||
}
|
||
/* fall-though */
|
||
case GST_AVI_DEMUX_HEADER_INFO:
|
||
GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
|
||
while (TRUE) {
|
||
if (gst_adapter_available (avi->adapter) < 12)
|
||
return GST_FLOW_OK;
|
||
|
||
data = gst_adapter_map (avi->adapter, 12);
|
||
tag = GST_READ_UINT32_LE (data);
|
||
size = GST_READ_UINT32_LE (data + 4);
|
||
ltag = GST_READ_UINT32_LE (data + 8);
|
||
gst_adapter_unmap (avi->adapter);
|
||
|
||
if (tag == GST_RIFF_TAG_LIST) {
|
||
switch (ltag) {
|
||
case GST_RIFF_LIST_movi:
|
||
gst_adapter_flush (avi->adapter, 12);
|
||
if (!avi->first_movi_offset)
|
||
avi->first_movi_offset = avi->offset;
|
||
avi->offset += 12;
|
||
avi->idx1_offset = avi->offset + size - 4;
|
||
goto skipping_done;
|
||
case GST_RIFF_LIST_INFO:
|
||
GST_DEBUG ("Found INFO chunk");
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
|
||
GST_DEBUG ("got size %d", size);
|
||
avi->offset += 12;
|
||
gst_adapter_flush (avi->adapter, 12);
|
||
if (size > 4) {
|
||
buf = gst_adapter_take_buffer (avi->adapter, size - 4);
|
||
/* mind padding */
|
||
if (size & 1)
|
||
gst_adapter_flush (avi->adapter, 1);
|
||
gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags);
|
||
if (tags) {
|
||
if (avi->globaltags) {
|
||
gst_tag_list_insert (avi->globaltags, tags,
|
||
GST_TAG_MERGE_REPLACE);
|
||
gst_tag_list_unref (tags);
|
||
} else {
|
||
avi->globaltags = tags;
|
||
}
|
||
}
|
||
tags = NULL;
|
||
gst_buffer_unref (buf);
|
||
|
||
avi->offset += GST_ROUND_UP_2 (size) - 4;
|
||
} else {
|
||
GST_DEBUG ("skipping INFO LIST prefix");
|
||
}
|
||
} else {
|
||
/* Need more data */
|
||
return GST_FLOW_OK;
|
||
}
|
||
break;
|
||
default:
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
|
||
/* accept 0 size buffer here */
|
||
avi->abort_buffering = FALSE;
|
||
avi->offset += 8 + GST_ROUND_UP_2 (size);
|
||
gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
|
||
} else {
|
||
/* Need more data */
|
||
return GST_FLOW_OK;
|
||
}
|
||
break;
|
||
}
|
||
} else {
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
|
||
/* accept 0 size buffer here */
|
||
avi->abort_buffering = FALSE;
|
||
avi->offset += 8 + GST_ROUND_UP_2 (size);
|
||
gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
|
||
} else {
|
||
/* Need more data */
|
||
return GST_FLOW_OK;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
default:
|
||
GST_WARNING ("unhandled header state: %d", avi->header_state);
|
||
break;
|
||
}
|
||
skipping_done:
|
||
|
||
GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
|
||
avi->num_streams, avi->stream[0].indexes);
|
||
|
||
GST_DEBUG ("Found movi chunk. Starting to stream data");
|
||
avi->state = GST_AVI_DEMUX_MOVI;
|
||
|
||
/* no indexes in push mode, but it still sets some variables */
|
||
gst_avi_demux_calculate_durations_from_index (avi);
|
||
|
||
gst_avi_demux_expose_streams (avi, TRUE);
|
||
|
||
/* prepare all streams for index 0 */
|
||
for (i = 0; i < avi->num_streams; i++)
|
||
avi->stream[i].current_entry = 0;
|
||
|
||
/* create initial NEWSEGMENT event */
|
||
if (avi->seg_event)
|
||
gst_event_unref (avi->seg_event);
|
||
avi->seg_event = gst_event_new_segment (&avi->segment);
|
||
if (avi->segment_seqnum)
|
||
gst_event_set_seqnum (avi->seg_event, avi->segment_seqnum);
|
||
|
||
gst_avi_demux_check_seekability (avi);
|
||
|
||
/* at this point we know all the streams and we can signal the no more
|
||
* pads signal */
|
||
GST_DEBUG_OBJECT (avi, "signaling no more pads");
|
||
gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
|
||
|
||
return GST_FLOW_OK;
|
||
|
||
/* ERRORS */
|
||
no_streams:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
header_no_list:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no LIST at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
header_no_avih:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no avih at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
if (sub)
|
||
gst_buffer_unref (sub);
|
||
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
header_wrong_avih:
|
||
{
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d,
|
||
gint h, gint min, gint s)
|
||
{
|
||
GDate *date;
|
||
GstDateTime *dt;
|
||
|
||
date = g_date_new_dmy (d, m, y);
|
||
if (!g_date_valid (date)) {
|
||
/* bogus date */
|
||
GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
|
||
g_date_free (date);
|
||
return;
|
||
}
|
||
|
||
dt = gst_date_time_new_local_time (y, m, d, h, min, s);
|
||
|
||
if (avi->globaltags == NULL)
|
||
avi->globaltags = gst_tag_list_new_empty ();
|
||
|
||
gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
|
||
NULL);
|
||
g_date_free (date);
|
||
if (dt) {
|
||
gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE_TIME,
|
||
dt, NULL);
|
||
gst_date_time_unref (dt);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
|
||
{
|
||
gint y, m, d;
|
||
gint hr = 0, min = 0, sec = 0;
|
||
gint ret;
|
||
|
||
GST_DEBUG ("data : '%s'", data);
|
||
|
||
ret = sscanf (data, "%d:%d:%d %d:%d:%d", &y, &m, &d, &hr, &min, &sec);
|
||
if (ret < 3) {
|
||
/* Attempt YYYY/MM/DD/ HH:MM variant (found in CASIO cameras) */
|
||
ret = sscanf (data, "%04d/%02d/%02d/ %d:%d", &y, &m, &d, &hr, &min);
|
||
if (ret < 3) {
|
||
GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
|
||
return;
|
||
}
|
||
}
|
||
gst_avi_demux_add_date_tag (avi, y, m, d, hr, min, sec);
|
||
}
|
||
|
||
static gint
|
||
get_month_num (gchar * data, guint size)
|
||
{
|
||
if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
|
||
return 1;
|
||
} else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
|
||
return 2;
|
||
} else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
|
||
return 3;
|
||
} else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
|
||
return 4;
|
||
} else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
|
||
return 5;
|
||
} else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
|
||
return 6;
|
||
} else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
|
||
return 7;
|
||
} else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
|
||
return 8;
|
||
} else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
|
||
return 9;
|
||
} else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
|
||
return 10;
|
||
} else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
|
||
return 11;
|
||
} else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
|
||
return 12;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
|
||
{
|
||
gint year, month, day;
|
||
gint hour, min, sec;
|
||
gint ret;
|
||
gchar weekday[4];
|
||
gchar monthstr[4];
|
||
|
||
ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
|
||
&min, &sec, &year);
|
||
if (ret != 7) {
|
||
GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
|
||
return;
|
||
}
|
||
month = get_month_num (monthstr, strlen (monthstr));
|
||
gst_avi_demux_add_date_tag (avi, year, month, day, hour, min, sec);
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
|
||
{
|
||
GstMapInfo map;
|
||
gchar *ptr;
|
||
gsize left;
|
||
gchar *safedata = NULL;
|
||
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
/*
|
||
* According to:
|
||
* http://www.eden-foundation.org/products/code/film_date_stamp/index.html
|
||
*
|
||
* This tag could be in one of the below formats
|
||
* 2005:08:17 11:42:43
|
||
* THU OCT 26 16:46:04 2006
|
||
* Mon Mar 3 09:44:56 2008
|
||
*
|
||
* FIXME: Our date tag doesn't include hours
|
||
*/
|
||
|
||
/* skip eventual initial whitespace */
|
||
ptr = (gchar *) map.data;
|
||
left = map.size;
|
||
|
||
while (left > 0 && g_ascii_isspace (ptr[0])) {
|
||
ptr++;
|
||
left--;
|
||
}
|
||
|
||
if (left == 0) {
|
||
goto non_parsable;
|
||
}
|
||
|
||
/* make a safe copy to add a \0 to the end of the string */
|
||
safedata = g_strndup (ptr, left);
|
||
|
||
/* test if the first char is a alpha or a number */
|
||
if (g_ascii_isdigit (ptr[0])) {
|
||
gst_avi_demux_parse_idit_nums_only (avi, safedata);
|
||
g_free (safedata);
|
||
gst_buffer_unmap (buf, &map);
|
||
return;
|
||
} else if (g_ascii_isalpha (ptr[0])) {
|
||
gst_avi_demux_parse_idit_text (avi, safedata);
|
||
g_free (safedata);
|
||
gst_buffer_unmap (buf, &map);
|
||
return;
|
||
}
|
||
|
||
g_free (safedata);
|
||
|
||
non_parsable:
|
||
GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
|
||
gst_buffer_unmap (buf, &map);
|
||
}
|
||
|
||
static void
|
||
parse_tag_value (GstAviDemux * avi, GstTagList * taglist, const gchar * type,
|
||
guint8 * ptr, guint tsize)
|
||
{
|
||
static const gchar *env_vars[] = { "GST_AVI_TAG_ENCODING",
|
||
"GST_RIFF_TAG_ENCODING", "GST_TAG_ENCODING", NULL
|
||
};
|
||
GType tag_type;
|
||
gchar *val;
|
||
|
||
tag_type = gst_tag_get_type (type);
|
||
val = gst_tag_freeform_string_to_utf8 ((gchar *) ptr, tsize, env_vars);
|
||
|
||
if (val != NULL) {
|
||
if (tag_type == G_TYPE_STRING) {
|
||
gst_tag_list_add (taglist, GST_TAG_MERGE_APPEND, type, val, NULL);
|
||
} else {
|
||
GValue tag_val = { 0, };
|
||
|
||
g_value_init (&tag_val, tag_type);
|
||
if (gst_value_deserialize (&tag_val, val)) {
|
||
gst_tag_list_add_value (taglist, GST_TAG_MERGE_APPEND, type, &tag_val);
|
||
} else {
|
||
GST_WARNING_OBJECT (avi, "could not deserialize '%s' into a "
|
||
"tag %s of type %s", val, type, g_type_name (tag_type));
|
||
}
|
||
g_value_unset (&tag_val);
|
||
}
|
||
g_free (val);
|
||
} else {
|
||
GST_WARNING_OBJECT (avi, "could not extract %s tag", type);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_parse_strd (GstAviDemux * avi, GstBuffer * buf)
|
||
{
|
||
GstMapInfo map;
|
||
guint32 tag;
|
||
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
if (map.size > 4) {
|
||
guint8 *ptr = map.data;
|
||
gsize left = map.size;
|
||
|
||
/* parsing based on
|
||
* http://www.eden-foundation.org/products/code/film_date_stamp/index.html
|
||
*/
|
||
tag = GST_READ_UINT32_LE (ptr);
|
||
if ((tag == GST_MAKE_FOURCC ('A', 'V', 'I', 'F')) && (map.size > 98)) {
|
||
gsize sub_size;
|
||
|
||
ptr += 98;
|
||
left -= 98;
|
||
if (!memcmp (ptr, "FUJIFILM", 8)) {
|
||
GST_MEMDUMP_OBJECT (avi, "fujifim tag", ptr, 48);
|
||
|
||
ptr += 10;
|
||
left -= 10;
|
||
sub_size = 0;
|
||
while (ptr[sub_size] && sub_size < left)
|
||
sub_size++;
|
||
|
||
if (avi->globaltags == NULL)
|
||
avi->globaltags = gst_tag_list_new_empty ();
|
||
|
||
gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_APPEND,
|
||
GST_TAG_DEVICE_MANUFACTURER, "FUJIFILM", NULL);
|
||
parse_tag_value (avi, avi->globaltags, GST_TAG_DEVICE_MODEL, ptr,
|
||
sub_size);
|
||
|
||
while (ptr[sub_size] == '\0' && sub_size < left)
|
||
sub_size++;
|
||
|
||
ptr += sub_size;
|
||
left -= sub_size;
|
||
sub_size = 0;
|
||
while (ptr[sub_size] && sub_size < left)
|
||
sub_size++;
|
||
if (ptr[4] == ':')
|
||
ptr[4] = '-';
|
||
if (ptr[7] == ':')
|
||
ptr[7] = '-';
|
||
|
||
parse_tag_value (avi, avi->globaltags, GST_TAG_DATE_TIME, ptr,
|
||
sub_size);
|
||
}
|
||
}
|
||
}
|
||
gst_buffer_unmap (buf, &map);
|
||
}
|
||
|
||
/*
|
||
* gst_avi_demux_parse_ncdt:
|
||
* @element: caller element (used for debugging/error).
|
||
* @buf: input data to be used for parsing, stripped from header.
|
||
* @taglist: a pointer to a taglist (returned by this function)
|
||
* containing information about this stream. May be
|
||
* NULL if no supported tags were found.
|
||
*
|
||
* Parses Nikon metadata from input data.
|
||
*/
|
||
static void
|
||
gst_avi_demux_parse_ncdt (GstAviDemux * avi, GstBuffer * buf,
|
||
GstTagList ** _taglist)
|
||
{
|
||
GstMapInfo info;
|
||
guint8 *ptr;
|
||
gsize left;
|
||
guint tsize;
|
||
guint32 tag;
|
||
const gchar *type;
|
||
GstTagList *taglist;
|
||
|
||
g_return_if_fail (_taglist != NULL);
|
||
|
||
if (!buf) {
|
||
*_taglist = NULL;
|
||
return;
|
||
}
|
||
gst_buffer_map (buf, &info, GST_MAP_READ);
|
||
|
||
taglist = gst_tag_list_new_empty ();
|
||
|
||
ptr = info.data;
|
||
left = info.size;
|
||
|
||
while (left > 8) {
|
||
tag = GST_READ_UINT32_LE (ptr);
|
||
tsize = GST_READ_UINT32_LE (ptr + 4);
|
||
|
||
GST_MEMDUMP_OBJECT (avi, "tag chunk", ptr, MIN (tsize + 8, left));
|
||
|
||
left -= 8;
|
||
ptr += 8;
|
||
|
||
GST_DEBUG_OBJECT (avi, "tag %" GST_FOURCC_FORMAT ", size %u",
|
||
GST_FOURCC_ARGS (tag), tsize);
|
||
|
||
if (tsize > left) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Tagsize %d is larger than available data %" G_GSIZE_FORMAT,
|
||
tsize, left);
|
||
tsize = left;
|
||
}
|
||
|
||
/* find out the type of metadata */
|
||
switch (tag) {
|
||
case GST_RIFF_LIST_nctg:
|
||
while (tsize > 4) {
|
||
guint16 sub_tag = GST_READ_UINT16_LE (ptr);
|
||
guint16 sub_size = GST_READ_UINT16_LE (ptr + 2);
|
||
|
||
tsize -= 4;
|
||
ptr += 4;
|
||
left -= 4;
|
||
|
||
if (sub_size > tsize)
|
||
break;
|
||
|
||
GST_DEBUG_OBJECT (avi, "sub-tag %u, size %u", sub_tag, sub_size);
|
||
/* http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Nikon.html#NCTG
|
||
* for some reason the sub_tag has a +2 offset
|
||
*/
|
||
switch (sub_tag) {
|
||
case 0x03: /* Make */
|
||
type = GST_TAG_DEVICE_MANUFACTURER;
|
||
break;
|
||
case 0x04: /* Model */
|
||
type = GST_TAG_DEVICE_MODEL;
|
||
break;
|
||
/* TODO: 0x05: is software version, like V1.0 */
|
||
case 0x06: /* Software */
|
||
type = GST_TAG_ENCODER;
|
||
break;
|
||
case 0x13: /* CreationDate */
|
||
type = GST_TAG_DATE_TIME;
|
||
if (left > 7) {
|
||
if (ptr[4] == ':')
|
||
ptr[4] = '-';
|
||
if (ptr[7] == ':')
|
||
ptr[7] = '-';
|
||
}
|
||
break;
|
||
default:
|
||
type = NULL;
|
||
break;
|
||
}
|
||
if (type != NULL && ptr[0] != '\0') {
|
||
GST_DEBUG_OBJECT (avi, "mapped tag %u to tag %s", sub_tag, type);
|
||
|
||
parse_tag_value (avi, taglist, type, ptr, sub_size);
|
||
}
|
||
|
||
ptr += sub_size;
|
||
tsize -= sub_size;
|
||
left -= sub_size;
|
||
}
|
||
break;
|
||
default:
|
||
type = NULL;
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown ncdt (metadata) tag entry %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (tag));
|
||
GST_MEMDUMP_OBJECT (avi, "Unknown ncdt", ptr, tsize);
|
||
break;
|
||
}
|
||
|
||
if (tsize & 1) {
|
||
tsize++;
|
||
if (tsize > left)
|
||
tsize = left;
|
||
}
|
||
|
||
ptr += tsize;
|
||
left -= tsize;
|
||
}
|
||
|
||
if (!gst_tag_list_is_empty (taglist)) {
|
||
GST_INFO_OBJECT (avi, "extracted tags: %" GST_PTR_FORMAT, taglist);
|
||
*_taglist = taglist;
|
||
} else {
|
||
*_taglist = NULL;
|
||
gst_tag_list_unref (taglist);
|
||
}
|
||
gst_buffer_unmap (buf, &info);
|
||
|
||
return;
|
||
}
|
||
|
||
/*
|
||
* Read full AVI headers.
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_stream_header_pull (GstAviDemux * avi)
|
||
{
|
||
GstFlowReturn res;
|
||
GstBuffer *buf, *sub = NULL;
|
||
guint32 tag;
|
||
guint offset = 4;
|
||
GstElement *element = GST_ELEMENT_CAST (avi);
|
||
GstClockTime stamp;
|
||
GstTagList *tags = NULL;
|
||
guint8 fourcc[4];
|
||
|
||
stamp = gst_util_get_timestamp ();
|
||
|
||
/* the header consists of a 'hdrl' LIST tag */
|
||
res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_range_failed;
|
||
else if (tag != GST_RIFF_TAG_LIST)
|
||
goto no_list;
|
||
else if (gst_buffer_get_size (buf) < 4)
|
||
goto no_header;
|
||
|
||
GST_DEBUG_OBJECT (avi, "parsing headers");
|
||
|
||
/* Find the 'hdrl' LIST tag */
|
||
gst_buffer_extract (buf, 0, fourcc, 4);
|
||
while (GST_READ_UINT32_LE (fourcc) != GST_RIFF_LIST_hdrl) {
|
||
GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (GST_READ_UINT32_LE (fourcc)));
|
||
|
||
/* Eat up */
|
||
gst_buffer_unref (buf);
|
||
|
||
/* read new chunk */
|
||
res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
|
||
if (res != GST_FLOW_OK)
|
||
goto pull_range_failed;
|
||
else if (tag != GST_RIFF_TAG_LIST)
|
||
goto no_list;
|
||
else if (gst_buffer_get_size (buf) < 4)
|
||
goto no_header;
|
||
gst_buffer_extract (buf, 0, fourcc, 4);
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
|
||
|
||
gst_avi_demux_roundup_list (avi, &buf);
|
||
|
||
/* the hdrl starts with a 'avih' header */
|
||
if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
|
||
goto no_avih;
|
||
else if (tag != GST_RIFF_TAG_avih)
|
||
goto no_avih;
|
||
else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
|
||
goto invalid_avih;
|
||
|
||
GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
|
||
|
||
/* now, read the elements from the header until the end */
|
||
while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
|
||
GstMapInfo map;
|
||
|
||
/* sub can be NULL on empty tags */
|
||
if (!sub)
|
||
continue;
|
||
|
||
gst_buffer_map (sub, &map, GST_MAP_READ);
|
||
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_LIST:
|
||
if (map.size < 4)
|
||
goto next;
|
||
|
||
switch (GST_READ_UINT32_LE (map.data)) {
|
||
case GST_RIFF_LIST_strl:
|
||
gst_buffer_unmap (sub, &map);
|
||
if (!(gst_avi_demux_parse_stream (avi, sub))) {
|
||
GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
|
||
("failed to parse stream, ignoring"));
|
||
sub = NULL;
|
||
}
|
||
sub = NULL;
|
||
goto next;
|
||
case GST_RIFF_LIST_odml:
|
||
gst_buffer_unmap (sub, &map);
|
||
gst_avi_demux_parse_odml (avi, sub);
|
||
sub = NULL;
|
||
break;
|
||
case GST_RIFF_LIST_INFO:
|
||
gst_buffer_unmap (sub, &map);
|
||
gst_buffer_resize (sub, 4, -1);
|
||
gst_riff_parse_info (element, sub, &tags);
|
||
if (tags) {
|
||
if (avi->globaltags) {
|
||
gst_tag_list_insert (avi->globaltags, tags,
|
||
GST_TAG_MERGE_REPLACE);
|
||
gst_tag_list_unref (tags);
|
||
} else {
|
||
avi->globaltags = tags;
|
||
}
|
||
}
|
||
tags = NULL;
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
break;
|
||
case GST_RIFF_LIST_ncdt:
|
||
gst_buffer_unmap (sub, &map);
|
||
gst_buffer_resize (sub, 4, -1);
|
||
gst_avi_demux_parse_ncdt (avi, sub, &tags);
|
||
if (tags) {
|
||
if (avi->globaltags) {
|
||
gst_tag_list_insert (avi->globaltags, tags,
|
||
GST_TAG_MERGE_REPLACE);
|
||
gst_tag_list_unref (tags);
|
||
} else {
|
||
avi->globaltags = tags;
|
||
}
|
||
}
|
||
tags = NULL;
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
break;
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown list %" GST_FOURCC_FORMAT " in AVI header",
|
||
GST_FOURCC_ARGS (GST_READ_UINT32_LE (map.data)));
|
||
GST_MEMDUMP_OBJECT (avi, "Unknown list", map.data, map.size);
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNQ:
|
||
case GST_RIFF_TAG_JUNK:
|
||
goto next;
|
||
}
|
||
break;
|
||
case GST_RIFF_IDIT:
|
||
gst_avi_demux_parse_idit (avi, sub);
|
||
goto next;
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Unknown tag %" GST_FOURCC_FORMAT " in AVI header",
|
||
GST_FOURCC_ARGS (tag));
|
||
GST_MEMDUMP_OBJECT (avi, "Unknown tag", map.data, map.size);
|
||
/* fall-through */
|
||
case GST_RIFF_TAG_JUNQ:
|
||
case GST_RIFF_TAG_JUNK:
|
||
next:
|
||
if (sub) {
|
||
gst_buffer_unmap (sub, &map);
|
||
gst_buffer_unref (sub);
|
||
}
|
||
sub = NULL;
|
||
break;
|
||
}
|
||
}
|
||
gst_buffer_unref (buf);
|
||
GST_DEBUG ("elements parsed");
|
||
|
||
/* check parsed streams */
|
||
if (avi->num_streams == 0)
|
||
goto no_streams;
|
||
else if (avi->num_streams != avi->avih->streams) {
|
||
GST_WARNING_OBJECT (avi,
|
||
"Stream header mentioned %d streams, but %d available",
|
||
avi->avih->streams, avi->num_streams);
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
|
||
G_GUINT64_FORMAT, avi->offset);
|
||
|
||
/* Now, find the data (i.e. skip all junk between header and data) */
|
||
do {
|
||
GstMapInfo map;
|
||
guint size;
|
||
guint32 tag, ltag;
|
||
|
||
buf = NULL;
|
||
res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
|
||
if (res != GST_FLOW_OK) {
|
||
GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
|
||
goto pull_range_failed;
|
||
} else if (gst_buffer_get_size (buf) < 12) {
|
||
GST_DEBUG_OBJECT (avi,
|
||
"got %" G_GSIZE_FORMAT " bytes which is less than 12 bytes",
|
||
gst_buffer_get_size (buf));
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
tag = GST_READ_UINT32_LE (map.data);
|
||
size = GST_READ_UINT32_LE (map.data + 4);
|
||
ltag = GST_READ_UINT32_LE (map.data + 8);
|
||
|
||
GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
|
||
GST_FOURCC_ARGS (tag), size);
|
||
GST_MEMDUMP ("Tag content", map.data, map.size);
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
|
||
switch (tag) {
|
||
case GST_RIFF_TAG_LIST:{
|
||
switch (ltag) {
|
||
case GST_RIFF_LIST_movi:
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Reached the 'movi' tag, we're done with skipping");
|
||
goto skipping_done;
|
||
case GST_RIFF_LIST_INFO:
|
||
res =
|
||
gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
|
||
&buf);
|
||
if (res != GST_FLOW_OK) {
|
||
GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
|
||
goto pull_range_failed;
|
||
}
|
||
GST_DEBUG ("got size %" G_GSIZE_FORMAT, gst_buffer_get_size (buf));
|
||
if (size < 4) {
|
||
GST_DEBUG ("skipping INFO LIST prefix");
|
||
avi->offset += (4 - GST_ROUND_UP_2 (size));
|
||
gst_buffer_unref (buf);
|
||
continue;
|
||
}
|
||
|
||
sub = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, 4, -1);
|
||
gst_riff_parse_info (element, sub, &tags);
|
||
if (tags) {
|
||
if (avi->globaltags) {
|
||
gst_tag_list_insert (avi->globaltags, tags,
|
||
GST_TAG_MERGE_REPLACE);
|
||
gst_tag_list_unref (tags);
|
||
} else {
|
||
avi->globaltags = tags;
|
||
}
|
||
}
|
||
tags = NULL;
|
||
if (sub) {
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
}
|
||
gst_buffer_unref (buf);
|
||
/* gst_riff_read_chunk() has already advanced avi->offset */
|
||
break;
|
||
case GST_RIFF_LIST_ncdt:
|
||
res =
|
||
gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
|
||
&buf);
|
||
if (res != GST_FLOW_OK) {
|
||
GST_DEBUG_OBJECT (avi, "couldn't read ncdt chunk");
|
||
goto pull_range_failed;
|
||
}
|
||
GST_DEBUG ("got size %" G_GSIZE_FORMAT, gst_buffer_get_size (buf));
|
||
if (size < 4) {
|
||
GST_DEBUG ("skipping ncdt LIST prefix");
|
||
avi->offset += (4 - GST_ROUND_UP_2 (size));
|
||
gst_buffer_unref (buf);
|
||
continue;
|
||
}
|
||
|
||
sub = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, 4, -1);
|
||
gst_avi_demux_parse_ncdt (avi, sub, &tags);
|
||
if (tags) {
|
||
if (avi->globaltags) {
|
||
gst_tag_list_insert (avi->globaltags, tags,
|
||
GST_TAG_MERGE_REPLACE);
|
||
gst_tag_list_unref (tags);
|
||
} else {
|
||
avi->globaltags = tags;
|
||
}
|
||
}
|
||
tags = NULL;
|
||
if (sub) {
|
||
gst_buffer_unref (sub);
|
||
sub = NULL;
|
||
}
|
||
gst_buffer_unref (buf);
|
||
/* gst_riff_read_chunk() has already advanced avi->offset */
|
||
break;
|
||
default:
|
||
GST_WARNING_OBJECT (avi,
|
||
"Skipping unknown list tag %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (ltag));
|
||
avi->offset += 8 + GST_ROUND_UP_2 (size);
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
default:
|
||
GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (tag));
|
||
/* Fall-through */
|
||
case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
|
||
case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
|
||
/* Only get buffer for debugging if the memdump is needed */
|
||
if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
|
||
buf = NULL;
|
||
res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
|
||
if (res != GST_FLOW_OK) {
|
||
GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
|
||
goto pull_range_failed;
|
||
}
|
||
gst_buffer_map (buf, &map, GST_MAP_READ);
|
||
GST_MEMDUMP ("Junk", map.data, map.size);
|
||
gst_buffer_unmap (buf, &map);
|
||
gst_buffer_unref (buf);
|
||
}
|
||
avi->offset += 8 + GST_ROUND_UP_2 (size);
|
||
break;
|
||
}
|
||
} while (1);
|
||
skipping_done:
|
||
|
||
GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
|
||
avi->num_streams, avi->stream[0].indexes);
|
||
|
||
/* create or read stream index (for seeking) */
|
||
if (avi->stream[0].indexes != NULL) {
|
||
/* we read a super index already (gst_avi_demux_parse_superindex() ) */
|
||
gst_avi_demux_read_subindexes_pull (avi);
|
||
}
|
||
if (!avi->have_index) {
|
||
if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
|
||
gst_avi_demux_stream_index (avi);
|
||
|
||
/* still no index, scan */
|
||
if (!avi->have_index) {
|
||
gst_avi_demux_stream_scan (avi);
|
||
|
||
/* still no index.. this is a fatal error for now.
|
||
* FIXME, we should switch to plain push mode without seeking
|
||
* instead of failing. */
|
||
if (!avi->have_index)
|
||
goto no_index;
|
||
}
|
||
}
|
||
/* use the indexes now to construct nice durations */
|
||
gst_avi_demux_calculate_durations_from_index (avi);
|
||
|
||
gst_avi_demux_expose_streams (avi, FALSE);
|
||
|
||
/* do initial seek to the default segment values */
|
||
gst_avi_demux_do_seek (avi, &avi->segment, 0);
|
||
|
||
/* create initial NEWSEGMENT event */
|
||
if (avi->seg_event)
|
||
gst_event_unref (avi->seg_event);
|
||
avi->seg_event = gst_event_new_segment (&avi->segment);
|
||
if (avi->segment_seqnum)
|
||
gst_event_set_seqnum (avi->seg_event, avi->segment_seqnum);
|
||
|
||
stamp = gst_util_get_timestamp () - stamp;
|
||
GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
|
||
GST_TIME_ARGS (stamp));
|
||
|
||
/* at this point we know all the streams and we can signal the no more
|
||
* pads signal */
|
||
GST_DEBUG_OBJECT (avi, "signaling no more pads");
|
||
gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
|
||
|
||
return GST_FLOW_OK;
|
||
|
||
/* ERRORS */
|
||
no_list:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no LIST at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
no_header:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no hdrl at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
no_avih:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (no avih at start): %"
|
||
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
||
if (sub)
|
||
gst_buffer_unref (sub);
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
invalid_avih:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Invalid AVI header (cannot parse avih at start)"));
|
||
gst_buffer_unref (buf);
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
no_streams:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
no_index:
|
||
{
|
||
GST_WARNING ("file without or too big index");
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("Could not get/create index"));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
pull_range_failed:
|
||
{
|
||
if (res == GST_FLOW_FLUSHING)
|
||
return res;
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
||
("pull_range flow reading header: %s", gst_flow_get_name (res)));
|
||
return res;
|
||
}
|
||
}
|
||
|
||
/* move a stream to @index */
|
||
static void
|
||
gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
|
||
GstSegment * segment, guint index)
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
|
||
|
||
if (segment->rate < 0.0) {
|
||
guint next_key;
|
||
/* Because we don't know the frame order we need to push from the prev keyframe
|
||
* to the next keyframe. If there is a smart decoder downstream he will notice
|
||
* that there are too many encoded frames send and return EOS when there
|
||
* are enough decoded frames to fill the segment. */
|
||
next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
|
||
|
||
/* FIXME, we go back to 0, we should look at segment.start. We will however
|
||
* stop earlier when the see the timestamp < segment.start */
|
||
stream->start_entry = 0;
|
||
stream->step_entry = index;
|
||
stream->current_entry = index;
|
||
stream->stop_entry = next_key;
|
||
|
||
GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
|
||
stream->start_entry, stream->step_entry, stream->stop_entry);
|
||
} else {
|
||
stream->start_entry = index;
|
||
stream->step_entry = index;
|
||
stream->stop_entry = gst_avi_demux_index_last (avi, stream);
|
||
}
|
||
if (stream->current_entry != index) {
|
||
GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
|
||
stream->current_entry, index);
|
||
stream->current_entry = index;
|
||
stream->discont = TRUE;
|
||
}
|
||
|
||
/* update the buffer info */
|
||
gst_avi_demux_get_buffer_info (avi, stream, index,
|
||
&stream->current_timestamp, &stream->current_ts_end,
|
||
&stream->current_offset, &stream->current_offset_end);
|
||
|
||
GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
|
||
", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
|
||
", off_end %" G_GUINT64_FORMAT, index,
|
||
GST_TIME_ARGS (stream->current_timestamp),
|
||
GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
|
||
stream->current_offset_end);
|
||
|
||
GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT,
|
||
stream->index[index].offset);
|
||
}
|
||
|
||
/*
|
||
* Do the actual seeking.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment,
|
||
GstSeekFlags flags)
|
||
{
|
||
GstClockTime seek_time;
|
||
gboolean keyframe, before, after;
|
||
guint i, index;
|
||
GstAviStream *stream;
|
||
gboolean next;
|
||
|
||
seek_time = segment->position;
|
||
keyframe = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
|
||
before = ! !(flags & GST_SEEK_FLAG_SNAP_BEFORE);
|
||
after = ! !(flags & GST_SEEK_FLAG_SNAP_AFTER);
|
||
|
||
GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
|
||
" keyframe seeking:%d, %s", GST_TIME_ARGS (seek_time), keyframe,
|
||
snap_types[before ? 1 : 0][after ? 1 : 0]);
|
||
|
||
/* FIXME, this code assumes the main stream with keyframes is stream 0,
|
||
* which is mostly correct... */
|
||
stream = &avi->stream[avi->main_stream];
|
||
|
||
next = after && !before;
|
||
if (segment->rate < 0)
|
||
next = !next;
|
||
|
||
/* get the entry index for the requested position */
|
||
index = gst_avi_demux_index_for_time (avi, stream, seek_time, next);
|
||
GST_DEBUG_OBJECT (avi, "Got entry %u", index);
|
||
if (index == -1)
|
||
return FALSE;
|
||
|
||
/* check if we are already on a keyframe */
|
||
if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
|
||
if (next) {
|
||
GST_DEBUG_OBJECT (avi, "not keyframe, searching forward");
|
||
/* now go to the next keyframe, this is where we should start
|
||
* decoding from. */
|
||
index = gst_avi_demux_index_next (avi, stream, index, TRUE);
|
||
GST_DEBUG_OBJECT (avi, "next keyframe at %u", index);
|
||
} else {
|
||
GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
|
||
/* now go to the previous keyframe, this is where we should start
|
||
* decoding from. */
|
||
index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
|
||
GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
|
||
}
|
||
}
|
||
|
||
/* move the main stream to this position */
|
||
gst_avi_demux_move_stream (avi, stream, segment, index);
|
||
|
||
if (keyframe) {
|
||
/* when seeking to a keyframe, we update the result seek time
|
||
* to the time of the keyframe. */
|
||
seek_time = stream->current_timestamp;
|
||
GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
|
||
GST_TIME_ARGS (seek_time));
|
||
/* the seek time is always the position ... */
|
||
segment->position = seek_time;
|
||
/* ... and start and stream time when going forwards,
|
||
* otherwise only stop time */
|
||
if (segment->rate > 0.0)
|
||
segment->start = segment->time = seek_time;
|
||
else
|
||
segment->stop = seek_time;
|
||
}
|
||
|
||
/* now set DISCONT and align the other streams */
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
GstAviStream *ostream;
|
||
|
||
ostream = &avi->stream[i];
|
||
if ((ostream == stream) || (ostream->index == NULL))
|
||
continue;
|
||
|
||
/* get the entry index for the requested position */
|
||
index = gst_avi_demux_index_for_time (avi, ostream, seek_time, FALSE);
|
||
if (index == -1)
|
||
continue;
|
||
|
||
/* move to previous keyframe */
|
||
if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
|
||
index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
|
||
|
||
gst_avi_demux_move_stream (avi, ostream, segment, index);
|
||
}
|
||
GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
|
||
GST_TIME_ARGS (seek_time));
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/*
|
||
* Handle seek event in pull mode.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
|
||
{
|
||
gdouble rate;
|
||
GstFormat format;
|
||
GstSeekFlags flags;
|
||
GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
|
||
gint64 cur, stop;
|
||
gboolean flush;
|
||
gboolean update;
|
||
GstSegment seeksegment = { 0, };
|
||
gint i;
|
||
guint32 seqnum = 0;
|
||
|
||
if (event) {
|
||
GST_DEBUG_OBJECT (avi, "doing seek with event");
|
||
|
||
gst_event_parse_seek (event, &rate, &format, &flags,
|
||
&cur_type, &cur, &stop_type, &stop);
|
||
seqnum = gst_event_get_seqnum (event);
|
||
|
||
/* we have to have a format as the segment format. Try to convert
|
||
* if not. */
|
||
if (format != GST_FORMAT_TIME) {
|
||
gboolean res = TRUE;
|
||
|
||
if (cur_type != GST_SEEK_TYPE_NONE)
|
||
res = gst_pad_query_convert (pad, format, cur, GST_FORMAT_TIME, &cur);
|
||
if (res && stop_type != GST_SEEK_TYPE_NONE)
|
||
res = gst_pad_query_convert (pad, format, stop, GST_FORMAT_TIME, &stop);
|
||
if (!res)
|
||
goto no_format;
|
||
|
||
format = GST_FORMAT_TIME;
|
||
}
|
||
GST_DEBUG_OBJECT (avi,
|
||
"seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
|
||
GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
|
||
/* FIXME: can we do anything with rate!=1.0 */
|
||
} else {
|
||
GST_DEBUG_OBJECT (avi, "doing seek without event");
|
||
flags = 0;
|
||
rate = 1.0;
|
||
}
|
||
|
||
/* save flush flag */
|
||
flush = flags & GST_SEEK_FLAG_FLUSH;
|
||
|
||
if (flush) {
|
||
GstEvent *fevent = gst_event_new_flush_start ();
|
||
|
||
if (seqnum)
|
||
gst_event_set_seqnum (fevent, seqnum);
|
||
/* for a flushing seek, we send a flush_start on all pads. This will
|
||
* eventually stop streaming with a WRONG_STATE. We can thus eventually
|
||
* take the STREAM_LOCK. */
|
||
GST_DEBUG_OBJECT (avi, "sending flush start");
|
||
gst_avi_demux_push_event (avi, gst_event_ref (fevent));
|
||
gst_pad_push_event (avi->sinkpad, fevent);
|
||
} else {
|
||
/* a non-flushing seek, we PAUSE the task so that we can take the
|
||
* STREAM_LOCK */
|
||
GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
|
||
gst_pad_pause_task (avi->sinkpad);
|
||
}
|
||
|
||
/* wait for streaming to stop */
|
||
GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
|
||
GST_PAD_STREAM_LOCK (avi->sinkpad);
|
||
|
||
/* copy segment, we need this because we still need the old
|
||
* segment when we close the current segment. */
|
||
memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
|
||
|
||
if (event) {
|
||
GST_DEBUG_OBJECT (avi, "configuring seek");
|
||
gst_segment_do_seek (&seeksegment, rate, format, flags,
|
||
cur_type, cur, stop_type, stop, &update);
|
||
}
|
||
/* do the seek, seeksegment.position contains the new position, this
|
||
* actually never fails. */
|
||
gst_avi_demux_do_seek (avi, &seeksegment, flags);
|
||
|
||
if (flush) {
|
||
GstEvent *fevent = gst_event_new_flush_stop (TRUE);
|
||
|
||
if (seqnum)
|
||
gst_event_set_seqnum (fevent, seqnum);
|
||
|
||
GST_DEBUG_OBJECT (avi, "sending flush stop");
|
||
gst_avi_demux_push_event (avi, gst_event_ref (fevent));
|
||
gst_pad_push_event (avi->sinkpad, fevent);
|
||
}
|
||
|
||
/* now update the real segment info */
|
||
memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
|
||
|
||
/* post the SEGMENT_START message when we do segmented playback */
|
||
if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
||
GstMessage *segment_start_msg =
|
||
gst_message_new_segment_start (GST_OBJECT_CAST (avi),
|
||
avi->segment.format, avi->segment.position);
|
||
if (seqnum)
|
||
gst_message_set_seqnum (segment_start_msg, seqnum);
|
||
gst_element_post_message (GST_ELEMENT_CAST (avi), segment_start_msg);
|
||
}
|
||
|
||
/* queue the segment event for the streaming thread. */
|
||
if (avi->seg_event)
|
||
gst_event_unref (avi->seg_event);
|
||
avi->seg_event = gst_event_new_segment (&avi->segment);
|
||
if (seqnum)
|
||
gst_event_set_seqnum (avi->seg_event, seqnum);
|
||
avi->segment_seqnum = seqnum;
|
||
|
||
if (!avi->streaming) {
|
||
gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
|
||
avi->sinkpad, NULL);
|
||
}
|
||
/* reset the last flow and mark discont, seek is always DISCONT */
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
GST_DEBUG_OBJECT (avi, "marking DISCONT");
|
||
avi->stream[i].discont = TRUE;
|
||
}
|
||
/* likewise for the whole new segment */
|
||
gst_flow_combiner_reset (avi->flowcombiner);
|
||
GST_PAD_STREAM_UNLOCK (avi->sinkpad);
|
||
|
||
return TRUE;
|
||
|
||
/* ERRORS */
|
||
no_format:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Handle seek event in push mode.
|
||
*/
|
||
static gboolean
|
||
avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, GstEvent * event)
|
||
{
|
||
gdouble rate;
|
||
GstFormat format;
|
||
GstSeekFlags flags;
|
||
GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
|
||
gint64 cur, stop;
|
||
gboolean keyframe, before, after, next;
|
||
GstAviStream *stream;
|
||
guint index;
|
||
guint n, str_num;
|
||
guint64 min_offset;
|
||
GstSegment seeksegment;
|
||
gboolean update;
|
||
|
||
/* check we have the index */
|
||
if (!avi->have_index) {
|
||
GST_DEBUG_OBJECT (avi, "no seek index built, seek aborted.");
|
||
return FALSE;
|
||
} else {
|
||
GST_DEBUG_OBJECT (avi, "doing push-based seek with event");
|
||
}
|
||
|
||
gst_event_parse_seek (event, &rate, &format, &flags,
|
||
&cur_type, &cur, &stop_type, &stop);
|
||
|
||
if (format != GST_FORMAT_TIME) {
|
||
gboolean res = TRUE;
|
||
|
||
if (cur_type != GST_SEEK_TYPE_NONE)
|
||
res = gst_pad_query_convert (pad, format, cur, GST_FORMAT_TIME, &cur);
|
||
if (res && stop_type != GST_SEEK_TYPE_NONE)
|
||
res = gst_pad_query_convert (pad, format, stop, GST_FORMAT_TIME, &stop);
|
||
if (!res) {
|
||
GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
|
||
return FALSE;
|
||
}
|
||
|
||
format = GST_FORMAT_TIME;
|
||
}
|
||
|
||
/* let gst_segment handle any tricky stuff */
|
||
GST_DEBUG_OBJECT (avi, "configuring seek");
|
||
memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
|
||
gst_segment_do_seek (&seeksegment, rate, format, flags,
|
||
cur_type, cur, stop_type, stop, &update);
|
||
|
||
keyframe = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
|
||
cur = seeksegment.position;
|
||
before = ! !(flags & GST_SEEK_FLAG_SNAP_BEFORE);
|
||
after = ! !(flags & GST_SEEK_FLAG_SNAP_AFTER);
|
||
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Seek requested: ts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
|
||
", kf %u, %s, rate %lf", GST_TIME_ARGS (cur), GST_TIME_ARGS (stop),
|
||
keyframe, snap_types[before ? 1 : 0][after ? 1 : 0], rate);
|
||
|
||
if (rate < 0) {
|
||
GST_DEBUG_OBJECT (avi, "negative rate seek not supported in push mode");
|
||
return FALSE;
|
||
}
|
||
|
||
/* FIXME, this code assumes the main stream with keyframes is stream 0,
|
||
* which is mostly correct... */
|
||
str_num = avi->main_stream;
|
||
stream = &avi->stream[str_num];
|
||
|
||
next = after && !before;
|
||
if (seeksegment.rate < 0)
|
||
next = !next;
|
||
|
||
/* get the entry index for the requested position */
|
||
index = gst_avi_demux_index_for_time (avi, stream, cur, next);
|
||
GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT,
|
||
str_num, index, GST_TIME_ARGS (cur));
|
||
if (index == -1)
|
||
return -1;
|
||
|
||
/* check if we are already on a keyframe */
|
||
if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
|
||
if (next) {
|
||
GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching forward");
|
||
/* now go to the next keyframe, this is where we should start
|
||
* decoding from. */
|
||
index = gst_avi_demux_index_next (avi, stream, index, TRUE);
|
||
GST_DEBUG_OBJECT (avi, "Found next keyframe at %u", index);
|
||
} else {
|
||
GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
|
||
/* now go to the previous keyframe, this is where we should start
|
||
* decoding from. */
|
||
index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
|
||
GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
|
||
}
|
||
}
|
||
|
||
gst_avi_demux_get_buffer_info (avi, stream, index,
|
||
&stream->current_timestamp, &stream->current_ts_end,
|
||
&stream->current_offset, &stream->current_offset_end);
|
||
|
||
/* re-use cur to be the timestamp of the seek as it _will_ be */
|
||
cur = stream->current_timestamp;
|
||
|
||
min_offset = stream->index[index].offset;
|
||
avi->seek_kf_offset = min_offset - 8;
|
||
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Seek to: ts %" GST_TIME_FORMAT " (on str %u, idx %u, offset %"
|
||
G_GUINT64_FORMAT ")", GST_TIME_ARGS (stream->current_timestamp), str_num,
|
||
index, min_offset);
|
||
|
||
for (n = 0; n < avi->num_streams; n++) {
|
||
GstAviStream *str = &avi->stream[n];
|
||
guint idx;
|
||
|
||
if (n == avi->main_stream)
|
||
continue;
|
||
|
||
/* get the entry index for the requested position */
|
||
idx = gst_avi_demux_index_for_time (avi, str, cur, FALSE);
|
||
GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT, n,
|
||
idx, GST_TIME_ARGS (cur));
|
||
if (idx == -1)
|
||
continue;
|
||
|
||
/* check if we are already on a keyframe */
|
||
if (!ENTRY_IS_KEYFRAME (&str->index[idx])) {
|
||
if (next) {
|
||
GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching forward");
|
||
/* now go to the next keyframe, this is where we should start
|
||
* decoding from. */
|
||
idx = gst_avi_demux_index_next (avi, str, idx, TRUE);
|
||
GST_DEBUG_OBJECT (avi, "Found next keyframe at %u", idx);
|
||
} else {
|
||
GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
|
||
/* now go to the previous keyframe, this is where we should start
|
||
* decoding from. */
|
||
idx = gst_avi_demux_index_prev (avi, str, idx, TRUE);
|
||
GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", idx);
|
||
}
|
||
}
|
||
|
||
gst_avi_demux_get_buffer_info (avi, str, idx,
|
||
&str->current_timestamp, &str->current_ts_end,
|
||
&str->current_offset, &str->current_offset_end);
|
||
|
||
if (str->index[idx].offset < min_offset) {
|
||
min_offset = str->index[idx].offset;
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Found an earlier offset at %" G_GUINT64_FORMAT ", str %u",
|
||
min_offset, n);
|
||
str_num = n;
|
||
stream = str;
|
||
index = idx;
|
||
}
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Seek performed: str %u, offset %" G_GUINT64_FORMAT ", idx %u, ts %"
|
||
GST_TIME_FORMAT ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
|
||
", off_end %" G_GUINT64_FORMAT, str_num, min_offset, index,
|
||
GST_TIME_ARGS (stream->current_timestamp),
|
||
GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
|
||
stream->current_offset_end);
|
||
|
||
/* index data refers to data, not chunk header (for pull mode convenience) */
|
||
min_offset -= 8;
|
||
GST_DEBUG_OBJECT (avi, "seeking to chunk at offset %" G_GUINT64_FORMAT,
|
||
min_offset);
|
||
|
||
if (!perform_seek_to_offset (avi, min_offset, gst_event_get_seqnum (event))) {
|
||
GST_DEBUG_OBJECT (avi, "seek event failed!");
|
||
return FALSE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/*
|
||
* Handle whether we can perform the seek event or if we have to let the chain
|
||
* function handle seeks to build the seek indexes first.
|
||
*/
|
||
static gboolean
|
||
gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
|
||
GstEvent * event)
|
||
{
|
||
/* check for having parsed index already */
|
||
if (!avi->have_index) {
|
||
guint64 offset = 0;
|
||
gboolean building_index;
|
||
|
||
GST_OBJECT_LOCK (avi);
|
||
/* handle the seek event in the chain function */
|
||
avi->state = GST_AVI_DEMUX_SEEK;
|
||
|
||
/* copy the event */
|
||
if (avi->seek_event)
|
||
gst_event_unref (avi->seek_event);
|
||
avi->seek_event = gst_event_ref (event);
|
||
|
||
/* set the building_index flag so that only one thread can setup the
|
||
* structures for index seeking. */
|
||
building_index = avi->building_index;
|
||
if (!building_index) {
|
||
avi->building_index = TRUE;
|
||
if (avi->stream[0].indexes) {
|
||
avi->odml_stream = 0;
|
||
avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
|
||
offset = avi->odml_subidxs[0];
|
||
} else {
|
||
offset = avi->idx1_offset;
|
||
}
|
||
}
|
||
GST_OBJECT_UNLOCK (avi);
|
||
|
||
if (!building_index) {
|
||
/* seek to the first subindex or legacy index */
|
||
GST_INFO_OBJECT (avi,
|
||
"Seeking to legacy index/first subindex at %" G_GUINT64_FORMAT,
|
||
offset);
|
||
return perform_seek_to_offset (avi, offset, gst_event_get_seqnum (event));
|
||
}
|
||
|
||
/* FIXME: we have to always return true so that we don't block the seek
|
||
* thread.
|
||
* Note: maybe it is OK to return true if we're still building the index */
|
||
return TRUE;
|
||
}
|
||
|
||
return avi_demux_handle_seek_push (avi, pad, event);
|
||
}
|
||
|
||
/*
|
||
* Helper for gst_avi_demux_invert()
|
||
*/
|
||
static inline void
|
||
swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
|
||
{
|
||
memcpy (tmp, d1, bytes);
|
||
memcpy (d1, d2, bytes);
|
||
memcpy (d2, tmp, bytes);
|
||
}
|
||
|
||
|
||
#define gst_avi_demux_is_uncompressed(fourcc) \
|
||
(fourcc == GST_RIFF_DIB || \
|
||
fourcc == GST_RIFF_rgb || \
|
||
fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
|
||
|
||
/*
|
||
* Invert DIB buffers... Takes existing buffer and
|
||
* returns either the buffer or a new one (with old
|
||
* one dereferenced).
|
||
* FIXME: can't we preallocate tmp? and remember stride, bpp?
|
||
*/
|
||
static GstBuffer *
|
||
gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
|
||
{
|
||
gint y, w, h;
|
||
gint bpp, stride;
|
||
guint8 *tmp = NULL;
|
||
GstMapInfo map;
|
||
guint32 fourcc;
|
||
|
||
if (stream->strh->type != GST_RIFF_FCC_vids)
|
||
return buf;
|
||
|
||
if (stream->strf.vids == NULL) {
|
||
GST_WARNING ("Failed to retrieve vids for stream");
|
||
return buf;
|
||
}
|
||
|
||
fourcc = (stream->strf.vids->compression) ?
|
||
stream->strf.vids->compression : stream->strh->fcc_handler;
|
||
if (!gst_avi_demux_is_uncompressed (fourcc)) {
|
||
return buf; /* Ignore non DIB buffers */
|
||
}
|
||
|
||
/* raw rgb data is stored topdown, but instead of inverting the buffer, */
|
||
/* some tools just negate the height field in the header (e.g. ffmpeg) */
|
||
if (((gint32) stream->strf.vids->height) < 0)
|
||
return buf;
|
||
|
||
h = stream->strf.vids->height;
|
||
w = stream->strf.vids->width;
|
||
bpp = stream->strf.vids->bit_cnt ? stream->strf.vids->bit_cnt : 8;
|
||
stride = GST_ROUND_UP_4 (w * (bpp / 8));
|
||
|
||
buf = gst_buffer_make_writable (buf);
|
||
|
||
gst_buffer_map (buf, &map, GST_MAP_READWRITE);
|
||
if (map.size < (stride * h)) {
|
||
GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
|
||
gst_buffer_unmap (buf, &map);
|
||
return buf;
|
||
}
|
||
|
||
tmp = g_malloc (stride);
|
||
|
||
for (y = 0; y < h / 2; y++) {
|
||
swap_line (map.data + stride * y, map.data + stride * (h - 1 - y), tmp,
|
||
stride);
|
||
}
|
||
|
||
g_free (tmp);
|
||
|
||
gst_buffer_unmap (buf, &map);
|
||
|
||
/* append palette to paletted RGB8 buffer data */
|
||
if (stream->rgb8_palette != NULL)
|
||
buf = gst_buffer_append (buf, gst_buffer_ref (stream->rgb8_palette));
|
||
|
||
return buf;
|
||
}
|
||
|
||
#if 0
|
||
static void
|
||
gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
|
||
GstClockTime timestamp, guint64 offset, gboolean keyframe)
|
||
{
|
||
/* do not add indefinitely for open-ended streaming */
|
||
if (G_UNLIKELY (avi->element_index && avi->seekable)) {
|
||
GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
|
||
G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
|
||
gst_index_add_association (avi->element_index, avi->index_id,
|
||
keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT :
|
||
GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp,
|
||
GST_FORMAT_BYTES, offset, NULL);
|
||
/* current_entry is DEFAULT (frame #) */
|
||
gst_index_add_association (avi->element_index, stream->index_id,
|
||
keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT :
|
||
GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp,
|
||
GST_FORMAT_BYTES, offset, GST_FORMAT_DEFAULT, stream->current_entry,
|
||
NULL);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
* Returns the aggregated GstFlowReturn.
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
|
||
GstFlowReturn ret)
|
||
{
|
||
GST_LOG_OBJECT (avi, "Stream %s:%s flow return: %s",
|
||
GST_DEBUG_PAD_NAME (stream->pad), gst_flow_get_name (ret));
|
||
ret = gst_flow_combiner_update_pad_flow (avi->flowcombiner, stream->pad, ret);
|
||
GST_LOG_OBJECT (avi, "combined to return %s", gst_flow_get_name (ret));
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* move @stream to the next position in its index */
|
||
static GstFlowReturn
|
||
gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
|
||
GstFlowReturn ret)
|
||
{
|
||
guint old_entry, new_entry;
|
||
|
||
old_entry = stream->current_entry;
|
||
/* move forwards */
|
||
new_entry = old_entry + 1;
|
||
|
||
/* see if we reached the end */
|
||
if (new_entry >= stream->stop_entry) {
|
||
if (avi->segment.rate < 0.0) {
|
||
if (stream->step_entry == stream->start_entry) {
|
||
/* we stepped all the way to the start, eos */
|
||
GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
|
||
goto eos;
|
||
}
|
||
/* backwards, stop becomes step, find a new step */
|
||
stream->stop_entry = stream->step_entry;
|
||
stream->step_entry = gst_avi_demux_index_prev (avi, stream,
|
||
stream->stop_entry, TRUE);
|
||
|
||
GST_DEBUG_OBJECT (avi,
|
||
"reverse playback jump: start %u, step %u, stop %u",
|
||
stream->start_entry, stream->step_entry, stream->stop_entry);
|
||
|
||
/* and start from the previous keyframe now */
|
||
new_entry = stream->step_entry;
|
||
} else {
|
||
/* EOS */
|
||
GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
|
||
goto eos;
|
||
}
|
||
}
|
||
|
||
if (new_entry != old_entry) {
|
||
stream->current_entry = new_entry;
|
||
stream->current_total = stream->index[new_entry].total;
|
||
|
||
if (new_entry == old_entry + 1) {
|
||
GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
|
||
old_entry, new_entry);
|
||
/* we simply moved one step forwards, reuse current info */
|
||
stream->current_timestamp = stream->current_ts_end;
|
||
stream->current_offset = stream->current_offset_end;
|
||
gst_avi_demux_get_buffer_info (avi, stream, new_entry,
|
||
NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
|
||
} else {
|
||
/* we moved DISCONT, full update */
|
||
gst_avi_demux_get_buffer_info (avi, stream, new_entry,
|
||
&stream->current_timestamp, &stream->current_ts_end,
|
||
&stream->current_offset, &stream->current_offset_end);
|
||
/* and MARK discont for this stream */
|
||
stream->discont = TRUE;
|
||
GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
|
||
", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
|
||
", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
|
||
GST_TIME_ARGS (stream->current_timestamp),
|
||
GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
|
||
stream->current_offset_end);
|
||
}
|
||
}
|
||
return ret;
|
||
|
||
/* ERROR */
|
||
eos:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "we are EOS");
|
||
/* setting current_timestamp to -1 marks EOS */
|
||
stream->current_timestamp = -1;
|
||
return GST_FLOW_EOS;
|
||
}
|
||
}
|
||
|
||
/* find the stream with the lowest current position when going forwards or with
|
||
* the highest position when going backwards, this is the stream
|
||
* we should push from next */
|
||
static gint
|
||
gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
|
||
{
|
||
guint64 min_time, max_time;
|
||
guint stream_num, i;
|
||
|
||
max_time = 0;
|
||
min_time = G_MAXUINT64;
|
||
stream_num = -1;
|
||
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
guint64 position;
|
||
GstAviStream *stream;
|
||
|
||
stream = &avi->stream[i];
|
||
|
||
/* ignore streams that finished */
|
||
if (stream->pad && GST_PAD_LAST_FLOW_RETURN (stream->pad) == GST_FLOW_EOS)
|
||
continue;
|
||
|
||
position = stream->current_timestamp;
|
||
|
||
/* position of -1 is EOS */
|
||
if (position != -1) {
|
||
if (rate > 0.0 && position < min_time) {
|
||
min_time = position;
|
||
stream_num = i;
|
||
} else if (rate < 0.0 && position >= max_time) {
|
||
max_time = position;
|
||
stream_num = i;
|
||
}
|
||
}
|
||
}
|
||
return stream_num;
|
||
}
|
||
|
||
static GstBuffer *
|
||
gst_avi_demux_align_buffer (GstAviDemux * demux,
|
||
GstBuffer * buffer, gsize alignment)
|
||
{
|
||
GstMapInfo map;
|
||
|
||
gst_buffer_map (buffer, &map, GST_MAP_READ);
|
||
|
||
if (map.size < sizeof (guintptr)) {
|
||
gst_buffer_unmap (buffer, &map);
|
||
return buffer;
|
||
}
|
||
|
||
if (((guintptr) map.data) & (alignment - 1)) {
|
||
GstBuffer *new_buffer;
|
||
GstAllocationParams params = { 0, alignment - 1, 0, 0, };
|
||
|
||
new_buffer = gst_buffer_new_allocate (NULL,
|
||
gst_buffer_get_size (buffer), ¶ms);
|
||
|
||
/* Copy data "by hand", so ensure alignment is kept: */
|
||
gst_buffer_fill (new_buffer, 0, map.data, map.size);
|
||
|
||
gst_buffer_copy_into (new_buffer, buffer, GST_BUFFER_COPY_METADATA, 0, -1);
|
||
GST_DEBUG_OBJECT (demux,
|
||
"We want output aligned on %" G_GSIZE_FORMAT ", reallocated",
|
||
alignment);
|
||
|
||
gst_buffer_unmap (buffer, &map);
|
||
gst_buffer_unref (buffer);
|
||
|
||
return new_buffer;
|
||
}
|
||
|
||
gst_buffer_unmap (buffer, &map);
|
||
return buffer;
|
||
}
|
||
|
||
static GstFlowReturn
|
||
gst_avi_demux_loop_data (GstAviDemux * avi)
|
||
{
|
||
GstFlowReturn ret = GST_FLOW_OK;
|
||
guint stream_num;
|
||
GstAviStream *stream;
|
||
gboolean processed = FALSE;
|
||
GstBuffer *buf;
|
||
guint64 offset, size;
|
||
GstClockTime timestamp, duration;
|
||
guint64 out_offset, out_offset_end;
|
||
gboolean keyframe;
|
||
GstAviIndexEntry *entry;
|
||
|
||
do {
|
||
stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
|
||
|
||
/* all are EOS */
|
||
if (G_UNLIKELY (stream_num == -1)) {
|
||
GST_DEBUG_OBJECT (avi, "all streams are EOS");
|
||
goto eos;
|
||
}
|
||
|
||
/* we have the stream now */
|
||
stream = &avi->stream[stream_num];
|
||
|
||
/* skip streams without pads */
|
||
if (!stream->pad) {
|
||
GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
|
||
stream_num);
|
||
goto next;
|
||
}
|
||
|
||
/* get the timing info for the entry */
|
||
timestamp = stream->current_timestamp;
|
||
duration = stream->current_ts_end - timestamp;
|
||
out_offset = stream->current_offset;
|
||
out_offset_end = stream->current_offset_end;
|
||
|
||
/* get the entry data info */
|
||
entry = &stream->index[stream->current_entry];
|
||
offset = entry->offset;
|
||
size = entry->size;
|
||
keyframe = ENTRY_IS_KEYFRAME (entry);
|
||
|
||
/* skip empty entries */
|
||
if (size == 0) {
|
||
GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
|
||
stream->current_entry, size, stream->pad);
|
||
goto next;
|
||
}
|
||
|
||
if (avi->segment.rate > 0.0) {
|
||
/* only check this for forwards playback for now */
|
||
if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
|
||
&& (timestamp > avi->segment.stop)) {
|
||
goto eos_stop;
|
||
}
|
||
} else {
|
||
if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.start)
|
||
&& (timestamp < avi->segment.start))
|
||
goto eos_stop;
|
||
}
|
||
|
||
GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
|
||
G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
|
||
stream_num, offset, offset, keyframe);
|
||
|
||
/* FIXME, check large chunks and cut them up */
|
||
|
||
/* pull in the data */
|
||
buf = NULL;
|
||
ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
|
||
if (ret != GST_FLOW_OK)
|
||
goto pull_failed;
|
||
|
||
/* check for short buffers, this is EOS as well */
|
||
if (gst_buffer_get_size (buf) < size)
|
||
goto short_buffer;
|
||
|
||
/* invert the picture if needed, and append palette for RGB8P */
|
||
buf = gst_avi_demux_invert (stream, buf);
|
||
|
||
/* mark non-keyframes */
|
||
if (keyframe || stream->is_raw) {
|
||
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
|
||
GST_BUFFER_PTS (buf) = timestamp;
|
||
} else {
|
||
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
|
||
GST_BUFFER_PTS (buf) = GST_CLOCK_TIME_NONE;
|
||
}
|
||
|
||
GST_BUFFER_DTS (buf) = timestamp;
|
||
|
||
GST_BUFFER_DURATION (buf) = duration;
|
||
GST_BUFFER_OFFSET (buf) = out_offset;
|
||
GST_BUFFER_OFFSET_END (buf) = out_offset_end;
|
||
|
||
/* mark discont when pending */
|
||
if (stream->discont) {
|
||
GST_DEBUG_OBJECT (avi, "setting DISCONT flag");
|
||
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
|
||
stream->discont = FALSE;
|
||
} else {
|
||
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
|
||
}
|
||
#if 0
|
||
gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
|
||
#endif
|
||
|
||
/* update current position in the segment */
|
||
avi->segment.position = timestamp;
|
||
|
||
GST_DEBUG_OBJECT (avi, "Pushing buffer of size %" G_GSIZE_FORMAT ", ts %"
|
||
GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
|
||
", off_end %" G_GUINT64_FORMAT,
|
||
gst_buffer_get_size (buf), GST_TIME_ARGS (timestamp),
|
||
GST_TIME_ARGS (duration), out_offset, out_offset_end);
|
||
|
||
if (stream->alignment > 1)
|
||
buf = gst_avi_demux_align_buffer (avi, buf, stream->alignment);
|
||
ret = gst_pad_push (stream->pad, buf);
|
||
|
||
/* mark as processed, we increment the frame and byte counters then
|
||
* leave the while loop and return the GstFlowReturn */
|
||
processed = TRUE;
|
||
|
||
if (avi->segment.rate < 0) {
|
||
if (timestamp > avi->segment.stop && ret == GST_FLOW_EOS) {
|
||
/* In reverse playback we can get a GST_FLOW_EOS when
|
||
* we are at the end of the segment, so we just need to jump
|
||
* back to the previous section. */
|
||
GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
|
||
ret = GST_FLOW_OK;
|
||
}
|
||
}
|
||
next:
|
||
/* move to next item */
|
||
ret = gst_avi_demux_advance (avi, stream, ret);
|
||
|
||
/* combine flows */
|
||
ret = gst_avi_demux_combine_flows (avi, stream, ret);
|
||
} while (!processed);
|
||
|
||
beach:
|
||
return ret;
|
||
|
||
/* special cases */
|
||
eos:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
|
||
ret = GST_FLOW_EOS;
|
||
goto beach;
|
||
}
|
||
eos_stop:
|
||
{
|
||
GST_LOG_OBJECT (avi, "Found keyframe after segment,"
|
||
" setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
|
||
GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
|
||
ret = GST_FLOW_EOS;
|
||
/* move to next stream */
|
||
goto next;
|
||
}
|
||
pull_failed:
|
||
{
|
||
GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
|
||
" size=%" G_GUINT64_FORMAT, offset, size);
|
||
goto beach;
|
||
}
|
||
short_buffer:
|
||
{
|
||
GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
|
||
", only got %" G_GSIZE_FORMAT "/%" G_GUINT64_FORMAT
|
||
" bytes (truncated file?)", offset, gst_buffer_get_size (buf), size);
|
||
gst_buffer_unref (buf);
|
||
ret = GST_FLOW_EOS;
|
||
goto beach;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Read data. If we have an index it delegates to
|
||
* gst_avi_demux_process_next_entry().
|
||
*/
|
||
static GstFlowReturn
|
||
gst_avi_demux_stream_data (GstAviDemux * avi)
|
||
{
|
||
guint32 tag = 0;
|
||
guint32 size = 0;
|
||
gint stream_nr = 0;
|
||
GstFlowReturn res = GST_FLOW_OK;
|
||
|
||
if (G_UNLIKELY (avi->have_eos)) {
|
||
/* Clean adapter, we're done */
|
||
gst_adapter_clear (avi->adapter);
|
||
return GST_FLOW_EOS;
|
||
}
|
||
|
||
if (G_UNLIKELY (avi->todrop)) {
|
||
guint drop;
|
||
|
||
if ((drop = gst_adapter_available (avi->adapter))) {
|
||
if (drop > avi->todrop)
|
||
drop = avi->todrop;
|
||
GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
|
||
gst_adapter_flush (avi->adapter, drop);
|
||
avi->todrop -= drop;
|
||
avi->offset += drop;
|
||
}
|
||
}
|
||
|
||
/* Iterate until need more data, so adapter won't grow too much */
|
||
while (1) {
|
||
if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
|
||
return GST_FLOW_OK;
|
||
}
|
||
|
||
GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
|
||
GST_FOURCC_ARGS (tag), size);
|
||
|
||
if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
|
||
((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
|
||
GST_LOG ("Chunk ok");
|
||
} else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
|
||
GST_DEBUG ("Found sub-index tag");
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
|
||
/* accept 0 size buffer here */
|
||
avi->abort_buffering = FALSE;
|
||
GST_DEBUG (" skipping %d bytes for now", size);
|
||
gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
|
||
}
|
||
return GST_FLOW_OK;
|
||
} else if (tag == GST_RIFF_TAG_RIFF) {
|
||
/* RIFF tags can appear in ODML files, just jump over them */
|
||
if (gst_adapter_available (avi->adapter) >= 12) {
|
||
GST_DEBUG ("Found RIFF tag, skipping RIFF header");
|
||
gst_adapter_flush (avi->adapter, 12);
|
||
continue;
|
||
}
|
||
return GST_FLOW_OK;
|
||
} else if (tag == GST_RIFF_TAG_idx1) {
|
||
GST_DEBUG ("Found index tag");
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
|
||
/* accept 0 size buffer here */
|
||
avi->abort_buffering = FALSE;
|
||
GST_DEBUG (" skipping %d bytes for now", size);
|
||
gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
|
||
}
|
||
return GST_FLOW_OK;
|
||
} else if (tag == GST_RIFF_TAG_LIST) {
|
||
/* movi chunks might be grouped in rec list */
|
||
if (gst_adapter_available (avi->adapter) >= 12) {
|
||
GST_DEBUG ("Found LIST tag, skipping LIST header");
|
||
gst_adapter_flush (avi->adapter, 12);
|
||
continue;
|
||
}
|
||
return GST_FLOW_OK;
|
||
} else if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ) {
|
||
/* rec list might contain JUNK chunks */
|
||
GST_DEBUG ("Found JUNK tag");
|
||
if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
|
||
/* accept 0 size buffer here */
|
||
avi->abort_buffering = FALSE;
|
||
GST_DEBUG (" skipping %d bytes for now", size);
|
||
gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
|
||
}
|
||
return GST_FLOW_OK;
|
||
} else {
|
||
GST_DEBUG ("No more stream chunks, send EOS");
|
||
avi->have_eos = TRUE;
|
||
return GST_FLOW_EOS;
|
||
}
|
||
|
||
if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
|
||
/* supposedly one hopes to catch a nicer chunk later on ... */
|
||
/* FIXME ?? give up here rather than possibly ending up going
|
||
* through the whole file */
|
||
if (avi->abort_buffering) {
|
||
avi->abort_buffering = FALSE;
|
||
if (size) {
|
||
gst_adapter_flush (avi->adapter, 8);
|
||
return GST_FLOW_OK;
|
||
}
|
||
} else {
|
||
return GST_FLOW_OK;
|
||
}
|
||
}
|
||
GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
|
||
GST_FOURCC_ARGS (tag), size);
|
||
|
||
stream_nr = CHUNKID_TO_STREAMNR (tag);
|
||
|
||
if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
|
||
/* recoverable */
|
||
GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
|
||
stream_nr, GST_FOURCC_ARGS (tag));
|
||
avi->offset += 8 + GST_ROUND_UP_2 (size);
|
||
gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
|
||
} else {
|
||
GstAviStream *stream;
|
||
GstClockTime next_ts = 0;
|
||
GstBuffer *buf = NULL;
|
||
#if 0
|
||
guint64 offset;
|
||
#endif
|
||
gboolean saw_desired_kf = stream_nr != avi->main_stream
|
||
|| avi->offset >= avi->seek_kf_offset;
|
||
|
||
if (stream_nr == avi->main_stream && avi->offset == avi->seek_kf_offset) {
|
||
GST_DEBUG_OBJECT (avi, "Desired keyframe reached");
|
||
avi->seek_kf_offset = 0;
|
||
}
|
||
|
||
if (saw_desired_kf) {
|
||
gst_adapter_flush (avi->adapter, 8);
|
||
/* get buffer */
|
||
if (size) {
|
||
buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
|
||
/* patch the size */
|
||
gst_buffer_resize (buf, 0, size);
|
||
} else {
|
||
buf = NULL;
|
||
}
|
||
} else {
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Desired keyframe not yet reached, flushing chunk");
|
||
gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
|
||
}
|
||
|
||
#if 0
|
||
offset = avi->offset;
|
||
#endif
|
||
avi->offset += 8 + GST_ROUND_UP_2 (size);
|
||
|
||
stream = &avi->stream[stream_nr];
|
||
|
||
/* set delay (if any)
|
||
if (stream->strh->init_frames == stream->current_frame &&
|
||
stream->delay == 0)
|
||
stream->delay = next_ts;
|
||
*/
|
||
|
||
/* parsing of corresponding header may have failed */
|
||
if (G_UNLIKELY (!stream->pad)) {
|
||
GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
|
||
GST_FOURCC_ARGS (tag));
|
||
if (buf)
|
||
gst_buffer_unref (buf);
|
||
} else {
|
||
/* get time of this buffer */
|
||
gst_pad_query_position (stream->pad, GST_FORMAT_TIME,
|
||
(gint64 *) & next_ts);
|
||
|
||
#if 0
|
||
gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
|
||
#endif
|
||
|
||
/* increment our positions */
|
||
stream->current_entry++;
|
||
/* as in pull mode, 'total' is either bytes (CBR) or frames (VBR) */
|
||
if (stream->strh->type == GST_RIFF_FCC_auds && stream->is_vbr) {
|
||
gint blockalign = stream->strf.auds->blockalign;
|
||
if (blockalign > 0)
|
||
stream->current_total += DIV_ROUND_UP (size, blockalign);
|
||
else
|
||
stream->current_total++;
|
||
} else {
|
||
stream->current_total += size;
|
||
}
|
||
GST_LOG_OBJECT (avi, "current entry %u, total %u",
|
||
stream->current_entry, stream->current_total);
|
||
|
||
/* update current position in the segment */
|
||
avi->segment.position = next_ts;
|
||
|
||
if (saw_desired_kf && buf) {
|
||
GstClockTime dur_ts = 0;
|
||
|
||
/* invert the picture if needed, and append palette for RGB8P */
|
||
buf = gst_avi_demux_invert (stream, buf);
|
||
|
||
gst_pad_query_position (stream->pad, GST_FORMAT_TIME,
|
||
(gint64 *) & dur_ts);
|
||
|
||
GST_BUFFER_DTS (buf) = next_ts;
|
||
GST_BUFFER_PTS (buf) = GST_CLOCK_TIME_NONE;
|
||
GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
|
||
if (stream->strh->type == GST_RIFF_FCC_vids) {
|
||
GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
|
||
GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
|
||
} else {
|
||
GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
|
||
GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (avi,
|
||
"Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
|
||
GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
|
||
" and size %d over pad %s", GST_TIME_ARGS (next_ts),
|
||
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
|
||
GST_BUFFER_OFFSET (buf), size, GST_PAD_NAME (stream->pad));
|
||
|
||
/* mark discont when pending */
|
||
if (G_UNLIKELY (stream->discont)) {
|
||
GST_DEBUG_OBJECT (avi, "Setting DISCONT");
|
||
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
|
||
stream->discont = FALSE;
|
||
} else {
|
||
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
|
||
}
|
||
|
||
if (stream->alignment > 1)
|
||
buf = gst_avi_demux_align_buffer (avi, buf, stream->alignment);
|
||
res = gst_pad_push (stream->pad, buf);
|
||
buf = NULL;
|
||
|
||
/* combine flows */
|
||
res = gst_avi_demux_combine_flows (avi, stream, res);
|
||
if (G_UNLIKELY (res != GST_FLOW_OK)) {
|
||
GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
|
||
return res;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return res;
|
||
}
|
||
|
||
/*
|
||
* Send pending tags.
|
||
*/
|
||
static void
|
||
push_tag_lists (GstAviDemux * avi)
|
||
{
|
||
guint i;
|
||
GstTagList *tags;
|
||
|
||
if (!avi->got_tags)
|
||
return;
|
||
|
||
GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
|
||
|
||
for (i = 0; i < avi->num_streams; i++) {
|
||
GstAviStream *stream = &avi->stream[i];
|
||
GstPad *pad = stream->pad;
|
||
|
||
tags = stream->taglist;
|
||
|
||
if (pad && tags) {
|
||
GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
|
||
|
||
gst_pad_push_event (pad, gst_event_new_tag (tags));
|
||
stream->taglist = NULL;
|
||
}
|
||
}
|
||
|
||
if (!(tags = avi->globaltags))
|
||
tags = gst_tag_list_new_empty ();
|
||
|
||
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
|
||
GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
|
||
|
||
GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
|
||
gst_tag_list_set_scope (tags, GST_TAG_SCOPE_GLOBAL);
|
||
gst_avi_demux_push_event (avi, gst_event_new_tag (tags));
|
||
avi->globaltags = NULL;
|
||
avi->got_tags = FALSE;
|
||
}
|
||
|
||
static void
|
||
gst_avi_demux_loop (GstPad * pad)
|
||
{
|
||
GstFlowReturn res;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
|
||
|
||
switch (avi->state) {
|
||
case GST_AVI_DEMUX_START:
|
||
res = gst_avi_demux_stream_init_pull (avi);
|
||
if (G_UNLIKELY (res != GST_FLOW_OK)) {
|
||
GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
|
||
goto pause;
|
||
}
|
||
avi->state = GST_AVI_DEMUX_HEADER;
|
||
/* fall-through */
|
||
case GST_AVI_DEMUX_HEADER:
|
||
res = gst_avi_demux_stream_header_pull (avi);
|
||
if (G_UNLIKELY (res != GST_FLOW_OK)) {
|
||
GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
|
||
goto pause;
|
||
}
|
||
avi->state = GST_AVI_DEMUX_MOVI;
|
||
break;
|
||
case GST_AVI_DEMUX_MOVI:
|
||
if (G_UNLIKELY (avi->seg_event)) {
|
||
gst_avi_demux_push_event (avi, avi->seg_event);
|
||
avi->seg_event = NULL;
|
||
}
|
||
if (G_UNLIKELY (avi->got_tags)) {
|
||
push_tag_lists (avi);
|
||
}
|
||
/* process each index entry in turn */
|
||
res = gst_avi_demux_loop_data (avi);
|
||
|
||
/* pause when error */
|
||
if (G_UNLIKELY (res != GST_FLOW_OK)) {
|
||
GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
|
||
goto pause;
|
||
}
|
||
break;
|
||
default:
|
||
GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
|
||
res = GST_FLOW_ERROR;
|
||
goto pause;
|
||
}
|
||
|
||
return;
|
||
|
||
/* ERRORS */
|
||
pause:{
|
||
|
||
gboolean push_eos = FALSE;
|
||
GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
|
||
gst_pad_pause_task (avi->sinkpad);
|
||
|
||
if (res == GST_FLOW_EOS) {
|
||
/* handle end-of-stream/segment */
|
||
/* so align our position with the end of it, if there is one
|
||
* this ensures a subsequent will arrive at correct base/acc time */
|
||
if (avi->segment.rate > 0.0 &&
|
||
GST_CLOCK_TIME_IS_VALID (avi->segment.stop))
|
||
avi->segment.position = avi->segment.stop;
|
||
else if (avi->segment.rate < 0.0)
|
||
avi->segment.position = avi->segment.start;
|
||
if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
||
gint64 stop;
|
||
GstEvent *event;
|
||
GstMessage *msg;
|
||
|
||
if ((stop = avi->segment.stop) == -1)
|
||
stop = avi->segment.duration;
|
||
|
||
GST_INFO_OBJECT (avi, "sending segment_done");
|
||
|
||
msg =
|
||
gst_message_new_segment_done (GST_OBJECT_CAST (avi),
|
||
GST_FORMAT_TIME, stop);
|
||
if (avi->segment_seqnum)
|
||
gst_message_set_seqnum (msg, avi->segment_seqnum);
|
||
gst_element_post_message (GST_ELEMENT_CAST (avi), msg);
|
||
|
||
event = gst_event_new_segment_done (GST_FORMAT_TIME, stop);
|
||
if (avi->segment_seqnum)
|
||
gst_event_set_seqnum (event, avi->segment_seqnum);
|
||
gst_avi_demux_push_event (avi, event);
|
||
} else {
|
||
push_eos = TRUE;
|
||
}
|
||
} else if (res == GST_FLOW_NOT_LINKED || res < GST_FLOW_EOS) {
|
||
/* for fatal errors we post an error message, wrong-state is
|
||
* not fatal because it happens due to flushes and only means
|
||
* that we should stop now. */
|
||
GST_ELEMENT_FLOW_ERROR (avi, res);
|
||
push_eos = TRUE;
|
||
}
|
||
if (push_eos) {
|
||
GstEvent *event;
|
||
|
||
GST_INFO_OBJECT (avi, "sending eos");
|
||
event = gst_event_new_eos ();
|
||
if (avi->segment_seqnum)
|
||
gst_event_set_seqnum (event, avi->segment_seqnum);
|
||
if (!gst_avi_demux_push_event (avi, event) && (res == GST_FLOW_EOS)) {
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
|
||
(NULL), ("got eos but no streams (yet)"));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
static GstFlowReturn
|
||
gst_avi_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
||
{
|
||
GstFlowReturn res;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (parent);
|
||
gint i;
|
||
|
||
if (GST_BUFFER_IS_DISCONT (buf)) {
|
||
GST_DEBUG_OBJECT (avi, "got DISCONT");
|
||
gst_adapter_clear (avi->adapter);
|
||
/* mark all streams DISCONT */
|
||
for (i = 0; i < avi->num_streams; i++)
|
||
avi->stream[i].discont = TRUE;
|
||
}
|
||
|
||
GST_DEBUG ("Store %" G_GSIZE_FORMAT " bytes in adapter",
|
||
gst_buffer_get_size (buf));
|
||
gst_adapter_push (avi->adapter, buf);
|
||
|
||
switch (avi->state) {
|
||
case GST_AVI_DEMUX_START:
|
||
if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
|
||
GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
|
||
break;
|
||
}
|
||
break;
|
||
case GST_AVI_DEMUX_HEADER:
|
||
if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
|
||
GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
|
||
break;
|
||
}
|
||
break;
|
||
case GST_AVI_DEMUX_MOVI:
|
||
if (G_UNLIKELY (avi->seg_event)) {
|
||
gst_avi_demux_push_event (avi, avi->seg_event);
|
||
avi->seg_event = NULL;
|
||
}
|
||
if (G_UNLIKELY (avi->got_tags)) {
|
||
push_tag_lists (avi);
|
||
}
|
||
res = gst_avi_demux_stream_data (avi);
|
||
break;
|
||
case GST_AVI_DEMUX_SEEK:
|
||
{
|
||
GstEvent *event;
|
||
|
||
res = GST_FLOW_OK;
|
||
|
||
/* obtain and parse indexes */
|
||
if (avi->stream[0].indexes && !gst_avi_demux_read_subindexes_push (avi))
|
||
/* seek in subindex read function failed */
|
||
goto index_failed;
|
||
|
||
if (!avi->stream[0].indexes && !avi->have_index
|
||
&& avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
|
||
gst_avi_demux_stream_index_push (avi);
|
||
|
||
if (avi->have_index) {
|
||
/* use the indexes now to construct nice durations */
|
||
gst_avi_demux_calculate_durations_from_index (avi);
|
||
} else {
|
||
/* still parsing indexes */
|
||
break;
|
||
}
|
||
|
||
GST_OBJECT_LOCK (avi);
|
||
event = avi->seek_event;
|
||
avi->seek_event = NULL;
|
||
GST_OBJECT_UNLOCK (avi);
|
||
|
||
/* calculate and perform seek */
|
||
if (!avi_demux_handle_seek_push (avi, avi->sinkpad, event)) {
|
||
gst_event_unref (event);
|
||
goto seek_failed;
|
||
}
|
||
|
||
gst_event_unref (event);
|
||
avi->state = GST_AVI_DEMUX_MOVI;
|
||
break;
|
||
}
|
||
default:
|
||
GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
|
||
("Illegal internal state"));
|
||
res = GST_FLOW_ERROR;
|
||
break;
|
||
}
|
||
|
||
GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
|
||
gst_flow_get_name (res));
|
||
|
||
if (G_UNLIKELY (avi->abort_buffering))
|
||
goto abort_buffering;
|
||
|
||
return res;
|
||
|
||
/* ERRORS */
|
||
index_failed:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("failed to read indexes"));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
seek_failed:
|
||
{
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("push mode seek failed"));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
abort_buffering:
|
||
{
|
||
avi->abort_buffering = FALSE;
|
||
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
|
||
return GST_FLOW_ERROR;
|
||
}
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_sink_activate (GstPad * sinkpad, GstObject * parent)
|
||
{
|
||
GstQuery *query;
|
||
gboolean pull_mode;
|
||
|
||
query = gst_query_new_scheduling ();
|
||
|
||
if (!gst_pad_peer_query (sinkpad, query)) {
|
||
gst_query_unref (query);
|
||
goto activate_push;
|
||
}
|
||
|
||
pull_mode = gst_query_has_scheduling_mode_with_flags (query,
|
||
GST_PAD_MODE_PULL, GST_SCHEDULING_FLAG_SEEKABLE);
|
||
gst_query_unref (query);
|
||
|
||
if (!pull_mode)
|
||
goto activate_push;
|
||
|
||
GST_DEBUG_OBJECT (sinkpad, "activating pull");
|
||
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
|
||
|
||
activate_push:
|
||
{
|
||
GST_DEBUG_OBJECT (sinkpad, "activating push");
|
||
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
|
||
}
|
||
}
|
||
|
||
static gboolean
|
||
gst_avi_demux_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
|
||
GstPadMode mode, gboolean active)
|
||
{
|
||
gboolean res;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (parent);
|
||
|
||
switch (mode) {
|
||
case GST_PAD_MODE_PULL:
|
||
if (active) {
|
||
avi->streaming = FALSE;
|
||
res = gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
|
||
sinkpad, NULL);
|
||
} else {
|
||
res = gst_pad_stop_task (sinkpad);
|
||
}
|
||
break;
|
||
case GST_PAD_MODE_PUSH:
|
||
if (active) {
|
||
GST_DEBUG ("avi: activating push/chain function");
|
||
avi->streaming = TRUE;
|
||
} else {
|
||
GST_DEBUG ("avi: deactivating push/chain function");
|
||
}
|
||
res = TRUE;
|
||
break;
|
||
default:
|
||
res = FALSE;
|
||
break;
|
||
}
|
||
return res;
|
||
}
|
||
|
||
#if 0
|
||
static void
|
||
gst_avi_demux_set_index (GstElement * element, GstIndex * index)
|
||
{
|
||
GstAviDemux *avi = GST_AVI_DEMUX (element);
|
||
|
||
GST_OBJECT_LOCK (avi);
|
||
if (avi->element_index)
|
||
gst_object_unref (avi->element_index);
|
||
if (index) {
|
||
avi->element_index = gst_object_ref (index);
|
||
} else {
|
||
avi->element_index = NULL;
|
||
}
|
||
GST_OBJECT_UNLOCK (avi);
|
||
/* object lock might be taken again */
|
||
if (index)
|
||
gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id);
|
||
GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
|
||
}
|
||
|
||
static GstIndex *
|
||
gst_avi_demux_get_index (GstElement * element)
|
||
{
|
||
GstIndex *result = NULL;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (element);
|
||
|
||
GST_OBJECT_LOCK (avi);
|
||
if (avi->element_index)
|
||
result = gst_object_ref (avi->element_index);
|
||
GST_OBJECT_UNLOCK (avi);
|
||
|
||
GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
|
||
|
||
return result;
|
||
}
|
||
#endif
|
||
|
||
static GstStateChangeReturn
|
||
gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
|
||
{
|
||
GstStateChangeReturn ret;
|
||
GstAviDemux *avi = GST_AVI_DEMUX (element);
|
||
|
||
switch (transition) {
|
||
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||
avi->streaming = FALSE;
|
||
gst_segment_init (&avi->segment, GST_FORMAT_TIME);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
||
if (ret == GST_STATE_CHANGE_FAILURE)
|
||
goto done;
|
||
|
||
switch (transition) {
|
||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||
avi->have_index = FALSE;
|
||
gst_avi_demux_reset (avi);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
done:
|
||
return ret;
|
||
}
|