gstreamer/gst/qtdemux/qtdemux.c
2009-10-09 11:54:03 +02:00

6412 lines
197 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2003> David A. Schleef <ds@schleef.org>
* Copyright (C) <2006> Wim Taymans <wim@fluendo.com>
* Copyright (C) <2007> Julien Moutte <julien@fluendo.com>
* Copyright (C) <2009> Tim-Philipp Müller <tim centricular net>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-qtdemux
*
* Demuxes a .mov 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.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch filesrc location=test.mov ! qtdemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink
* ]| Play (parse and decode) a .mov file and try to output it to
* an automatically detected soundcard and videosink. If the MOV file contains
* compressed audio or video data, this will only work if you have the
* right decoder elements/plugins installed.
* </refsect2>
*
* Last reviewed on 2006-12-29 (0.10.5)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gst/gst-i18n-plugin.h"
#include <gst/tag/tag.h>
#include "qtatomparser.h"
#include "qtdemux_types.h"
#include "qtdemux_dump.h"
#include "qtdemux_fourcc.h"
#include "qtdemux.h"
#include "qtpalette.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_ZLIB
# include <zlib.h>
#endif
/* max. size considered 'sane' for non-mdat atoms */
#define QTDEMUX_MAX_ATOM_SIZE (25*1024*1024)
/* if the sample index is larger than this, something is likely wrong */
#define QTDEMUX_MAX_SAMPLE_INDEX_SIZE (50*1024*1024)
GST_DEBUG_CATEGORY (qtdemux_debug);
/*typedef struct _QtNode QtNode; */
typedef struct _QtDemuxSegment QtDemuxSegment;
typedef struct _QtDemuxSample QtDemuxSample;
/*struct _QtNode
{
guint32 type;
guint8 *data;
gint len;
};*/
struct _QtDemuxSample
{
guint32 size;
guint64 offset;
GstClockTimeDiff pts_offset; /* Add this value to timestamp to get the pts */
guint64 timestamp; /* In GstClockTime */
guint64 duration; /* in GstClockTime */
gboolean keyframe; /* TRUE when this packet is a keyframe */
};
/*
* Quicktime has tracks and segments. A track is a continuous piece of
* multimedia content. The track is not always played from start to finish but
* instead, pieces of the track are 'cut out' and played in sequence. This is
* what the segments do.
*
* Inside the track we have keyframes (K) and delta frames. The track has its
* own timing, which starts from 0 and extends to end. The position in the track
* is called the media_time.
*
* The segments now describe the pieces that should be played from this track
* and are basically tupples of media_time/duration/rate entries. We can have
* multiple segments and they are all played after one another. An example:
*
* segment 1: media_time: 1 second, duration: 1 second, rate 1
* segment 2: media_time: 3 second, duration: 2 second, rate 2
*
* To correctly play back this track, one must play: 1 second of media starting
* from media_time 1 followed by 2 seconds of media starting from media_time 3
* at a rate of 2.
*
* Each of the segments will be played at a specific time, the first segment at
* time 0, the second one after the duration of the first one, etc.. Note that
* the time in resulting playback is not identical to the media_time of the
* track anymore.
*
* Visually, assuming the track has 4 second of media_time:
*
* (a) (b) (c) (d)
* .-----------------------------------------------------------.
* track: | K.....K.........K........K.......K.......K...........K... |
* '-----------------------------------------------------------'
* 0 1 2 3 4
* .------------^ ^ .----------^ ^
* / .-------------' / .------------------'
* / / .-----' /
* .--------------. .--------------.
* | segment 1 | | segment 2 |
* '--------------' '--------------'
*
* The challenge here is to cut out the right pieces of the track for each of
* the playback segments. This fortunatly can easily be done with the SEGMENT
* events of gstreamer.
*
* For playback of segment 1, we need to provide the decoder with the keyframe
* (a), in the above figure, but we must instruct it only to output the decoded
* data between second 1 and 2. We do this with a SEGMENT event for 1 to 2, time
* position set to the time of the segment: 0.
*
* We then proceed to push data from keyframe (a) to frame (b). The decoder
* decodes but clips all before media_time 1.
*
* After finishing a segment, we push out a new SEGMENT event with the clipping
* boundaries of the new data.
*
* This is a good usecase for the GStreamer accumulated SEGMENT events.
*/
struct _QtDemuxSegment
{
/* global time and duration, all gst time */
guint64 time;
guint64 stop_time;
guint64 duration;
/* media time of trak, all gst time */
guint64 media_start;
guint64 media_stop;
gdouble rate;
};
struct _QtDemuxStream
{
GstPad *pad;
/* stream type */
guint32 subtype;
GstCaps *caps;
guint32 fourcc;
/* duration/scale */
guint64 duration; /* in timescale */
guint32 timescale;
/* our samples */
guint32 n_samples;
QtDemuxSample *samples;
gboolean all_keyframe; /* TRUE when all samples are keyframes (no stss) */
guint32 min_duration; /* duration in timescale of first sample, used for figuring out
the framerate, in timescale units */
/* if we use chunks or samples */
gboolean sampled;
guint padding;
/* video info */
gint width;
gint height;
/* aspect ratio */
gint display_width;
gint display_height;
gint par_w;
gint par_h;
/* Numerator/denominator framerate */
gint fps_n;
gint fps_d;
guint16 bits_per_sample;
guint16 color_table_id;
/* audio info */
gdouble rate;
gint n_channels;
guint samples_per_packet;
guint samples_per_frame;
guint bytes_per_packet;
guint bytes_per_sample;
guint bytes_per_frame;
guint compression;
/* when a discontinuity is pending */
gboolean discont;
/* list of buffers to push first */
GSList *buffers;
/* if we need to clip this buffer. This is only needed for uncompressed
* data */
gboolean need_clip;
/* current position */
guint32 segment_index;
guint32 sample_index;
guint64 time_position; /* in gst time */
/* the Gst segment we are processing out, used for clipping */
GstSegment segment;
/* last GstFlowReturn */
GstFlowReturn last_ret;
/* quicktime segments */
guint32 n_segments;
QtDemuxSegment *segments;
guint32 from_sample;
guint32 to_sample;
gboolean sent_eos;
GstTagList *pending_tags;
gboolean send_global_tags;
};
enum QtDemuxState
{
QTDEMUX_STATE_INITIAL, /* Initial state (haven't got the header yet) */
QTDEMUX_STATE_HEADER, /* Parsing the header */
QTDEMUX_STATE_MOVIE, /* Parsing/Playing the media data */
QTDEMUX_STATE_BUFFER_MDAT /* Buffering the mdat atom */
};
static GNode *qtdemux_tree_get_child_by_type (GNode * node, guint32 fourcc);
static GNode *qtdemux_tree_get_child_by_type_full (GNode * node,
guint32 fourcc, QtAtomParser * parser);
static GNode *qtdemux_tree_get_sibling_by_type (GNode * node, guint32 fourcc);
static const GstElementDetails gst_qtdemux_details =
GST_ELEMENT_DETAILS ("QuickTime demuxer",
"Codec/Demuxer",
"Demultiplex a QuickTime file into audio and video streams",
"David Schleef <ds@schleef.org>, Wim Taymans <wim@fluendo.com>");
static GstStaticPadTemplate gst_qtdemux_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/quicktime; video/mj2; audio/x-m4a; "
"application/x-3gp")
);
static GstStaticPadTemplate gst_qtdemux_videosrc_template =
GST_STATIC_PAD_TEMPLATE ("video_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate gst_qtdemux_audiosrc_template =
GST_STATIC_PAD_TEMPLATE ("audio_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate gst_qtdemux_subpsrc_template =
GST_STATIC_PAD_TEMPLATE ("subp_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
static GstElementClass *parent_class = NULL;
static void gst_qtdemux_class_init (GstQTDemuxClass * klass);
static void gst_qtdemux_base_init (GstQTDemuxClass * klass);
static void gst_qtdemux_init (GstQTDemux * quicktime_demux);
static void gst_qtdemux_dispose (GObject * object);
static GstStateChangeReturn gst_qtdemux_change_state (GstElement * element,
GstStateChange transition);
static gboolean qtdemux_sink_activate (GstPad * sinkpad);
static gboolean qtdemux_sink_activate_pull (GstPad * sinkpad, gboolean active);
static gboolean qtdemux_sink_activate_push (GstPad * sinkpad, gboolean active);
static void gst_qtdemux_loop (GstPad * pad);
static GstFlowReturn gst_qtdemux_chain (GstPad * sinkpad, GstBuffer * inbuf);
static gboolean gst_qtdemux_handle_sink_event (GstPad * pad, GstEvent * event);
static gboolean qtdemux_parse_moov (GstQTDemux * qtdemux, const guint8 * buffer,
guint length);
static gboolean qtdemux_parse_node (GstQTDemux * qtdemux, GNode * node,
const guint8 * buffer, guint length);
static gboolean qtdemux_parse_tree (GstQTDemux * qtdemux);
static void gst_qtdemux_handle_esds (GstQTDemux * qtdemux,
QtDemuxStream * stream, GNode * esds, GstTagList * list);
static GstCaps *qtdemux_video_caps (GstQTDemux * qtdemux,
QtDemuxStream * stream, guint32 fourcc, const guint8 * stsd_data,
gchar ** codec_name);
static GstCaps *qtdemux_audio_caps (GstQTDemux * qtdemux,
QtDemuxStream * stream, guint32 fourcc, const guint8 * data, int len,
gchar ** codec_name);
static GstCaps *qtdemux_subp_caps (GstQTDemux * qtdemux,
QtDemuxStream * stream, guint32 fourcc, const guint8 * data,
gchar ** codec_name);
GType
gst_qtdemux_get_type (void)
{
static GType qtdemux_type = 0;
if (G_UNLIKELY (!qtdemux_type)) {
static const GTypeInfo qtdemux_info = {
sizeof (GstQTDemuxClass),
(GBaseInitFunc) gst_qtdemux_base_init, NULL,
(GClassInitFunc) gst_qtdemux_class_init,
NULL, NULL, sizeof (GstQTDemux), 0,
(GInstanceInitFunc) gst_qtdemux_init,
};
qtdemux_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstQTDemux", &qtdemux_info,
0);
}
return qtdemux_type;
}
static void
gst_qtdemux_base_init (GstQTDemuxClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_qtdemux_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_qtdemux_videosrc_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_qtdemux_audiosrc_template));
gst_element_class_set_details (element_class, &gst_qtdemux_details);
GST_DEBUG_CATEGORY_INIT (qtdemux_debug, "qtdemux", 0, "qtdemux plugin");
}
static void
gst_qtdemux_class_init (GstQTDemuxClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->dispose = gst_qtdemux_dispose;
gstelement_class->change_state = gst_qtdemux_change_state;
}
static void
gst_qtdemux_init (GstQTDemux * qtdemux)
{
qtdemux->sinkpad =
gst_pad_new_from_static_template (&gst_qtdemux_sink_template, "sink");
gst_pad_set_activate_function (qtdemux->sinkpad, qtdemux_sink_activate);
gst_pad_set_activatepull_function (qtdemux->sinkpad,
qtdemux_sink_activate_pull);
gst_pad_set_activatepush_function (qtdemux->sinkpad,
qtdemux_sink_activate_push);
gst_pad_set_chain_function (qtdemux->sinkpad, gst_qtdemux_chain);
gst_pad_set_event_function (qtdemux->sinkpad, gst_qtdemux_handle_sink_event);
gst_element_add_pad (GST_ELEMENT_CAST (qtdemux), qtdemux->sinkpad);
qtdemux->state = QTDEMUX_STATE_INITIAL;
/* FIXME, use segment last_stop for this */
qtdemux->last_ts = GST_CLOCK_TIME_NONE;
qtdemux->pullbased = FALSE;
qtdemux->neededbytes = 16;
qtdemux->todrop = 0;
qtdemux->adapter = gst_adapter_new ();
qtdemux->offset = 0;
qtdemux->mdatoffset = GST_CLOCK_TIME_NONE;
qtdemux->mdatbuffer = NULL;
gst_segment_init (&qtdemux->segment, GST_FORMAT_TIME);
}
static void
gst_qtdemux_dispose (GObject * object)
{
GstQTDemux *qtdemux = GST_QTDEMUX (object);
if (qtdemux->adapter) {
g_object_unref (G_OBJECT (qtdemux->adapter));
qtdemux->adapter = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static GstFlowReturn
gst_qtdemux_pull_atom (GstQTDemux * qtdemux, guint64 offset, guint64 size,
GstBuffer ** buf)
{
GstFlowReturn flow;
/* Sanity check: catch bogus sizes (fuzzed/broken files) */
if (G_UNLIKELY (size > QTDEMUX_MAX_ATOM_SIZE)) {
GST_ELEMENT_ERROR (qtdemux, STREAM, DECODE,
(_("This file is invalid and cannot be played.")),
("atom has bogus size %" G_GUINT64_FORMAT, size));
return GST_FLOW_ERROR;
}
flow = gst_pad_pull_range (qtdemux->sinkpad, offset, size, buf);
if (G_UNLIKELY (flow != GST_FLOW_OK))
return flow;
/* Catch short reads - we don't want any partial atoms */
if (G_UNLIKELY (GST_BUFFER_SIZE (*buf) < size)) {
GST_WARNING_OBJECT (qtdemux, "short read: %u < %" G_GUINT64_FORMAT,
GST_BUFFER_SIZE (*buf), size);
gst_buffer_unref (*buf);
*buf = NULL;
return GST_FLOW_UNEXPECTED;
}
return flow;
}
#if 0
static gboolean
gst_qtdemux_src_convert (GstPad * pad, GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value)
{
gboolean res = TRUE;
QtDemuxStream *stream = gst_pad_get_element_private (pad);
if (stream->subtype == GST_MAKE_FOURCC ('v', 'i', 'd', 'e') &&
(src_format == GST_FORMAT_BYTES || *dest_format == GST_FORMAT_BYTES))
return FALSE;
switch (src_format) {
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
*dest_value = src_value * 1; /* FIXME */
break;
case GST_FORMAT_DEFAULT:
*dest_value = src_value * 1; /* FIXME */
break;
default:
res = FALSE;
break;
}
break;
case GST_FORMAT_BYTES:
switch (*dest_format) {
case GST_FORMAT_TIME:
*dest_value = src_value * 1; /* FIXME */
break;
default:
res = FALSE;
break;
}
break;
case GST_FORMAT_DEFAULT:
switch (*dest_format) {
case GST_FORMAT_TIME:
*dest_value = src_value * 1; /* FIXME */
break;
default:
res = FALSE;
break;
}
break;
default:
res = FALSE;
}
return res;
}
#endif
static const GstQueryType *
gst_qtdemux_get_src_query_types (GstPad * pad)
{
static const GstQueryType src_types[] = {
GST_QUERY_POSITION,
GST_QUERY_DURATION,
GST_QUERY_SEEKING,
0
};
return src_types;
}
static gboolean
gst_qtdemux_get_duration (GstQTDemux * qtdemux, gint64 * duration)
{
gboolean res = TRUE;
*duration = GST_CLOCK_TIME_NONE;
if (qtdemux->duration != 0) {
if (qtdemux->duration != G_MAXINT32 && qtdemux->timescale != 0) {
*duration = gst_util_uint64_scale (qtdemux->duration,
GST_SECOND, qtdemux->timescale);
}
}
return res;
}
static gboolean
gst_qtdemux_handle_src_query (GstPad * pad, GstQuery * query)
{
gboolean res = FALSE;
GstQTDemux *qtdemux = GST_QTDEMUX (gst_pad_get_parent (pad));
GST_LOG_OBJECT (pad, "%s query", GST_QUERY_TYPE_NAME (query));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
if (GST_CLOCK_TIME_IS_VALID (qtdemux->segment.last_stop)) {
gst_query_set_position (query, GST_FORMAT_TIME,
qtdemux->segment.last_stop);
res = TRUE;
}
break;
case GST_QUERY_DURATION:{
GstFormat fmt;
gst_query_parse_duration (query, &fmt, NULL);
if (fmt == GST_FORMAT_TIME) {
gint64 duration = -1;
gst_qtdemux_get_duration (qtdemux, &duration);
if (duration > 0) {
gst_query_set_duration (query, GST_FORMAT_TIME, duration);
res = TRUE;
}
}
break;
}
case GST_QUERY_SEEKING:{
GstFormat fmt;
gboolean seekable;
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
if (fmt == GST_FORMAT_TIME) {
gint64 duration = -1;
gst_qtdemux_get_duration (qtdemux, &duration);
seekable = TRUE;
if (!qtdemux->pullbased) {
GstQuery *q;
/* we might be able with help from upstream */
seekable = FALSE;
q = gst_query_new_seeking (GST_FORMAT_BYTES);
if (gst_pad_peer_query (qtdemux->sinkpad, q)) {
gst_query_parse_seeking (q, &fmt, &seekable, NULL, NULL);
GST_LOG_OBJECT (qtdemux, "upstream BYTE seekable %d", seekable);
}
gst_query_unref (q);
}
gst_query_set_seeking (query, GST_FORMAT_TIME, seekable, 0, duration);
res = TRUE;
}
break;
}
default:
res = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (qtdemux);
return res;
}
static void
gst_qtdemux_push_tags (GstQTDemux * qtdemux, QtDemuxStream * stream)
{
if (G_LIKELY (stream->pad)) {
GST_DEBUG_OBJECT (qtdemux, "Checking pad %s:%s for tags",
GST_DEBUG_PAD_NAME (stream->pad));
if (G_UNLIKELY (stream->pending_tags)) {
GST_DEBUG_OBJECT (qtdemux, "Sending tags %" GST_PTR_FORMAT,
stream->pending_tags);
gst_pad_push_event (stream->pad,
gst_event_new_tag (stream->pending_tags));
stream->pending_tags = NULL;
}
if (G_UNLIKELY (stream->send_global_tags && qtdemux->tag_list)) {
GST_DEBUG_OBJECT (qtdemux, "Sending global tags %" GST_PTR_FORMAT,
qtdemux->tag_list);
gst_pad_push_event (stream->pad,
gst_event_new_tag (gst_tag_list_copy (qtdemux->tag_list)));
stream->send_global_tags = FALSE;
}
}
}
/* push event on all source pads; takes ownership of the event */
static void
gst_qtdemux_push_event (GstQTDemux * qtdemux, GstEvent * event)
{
guint n;
GST_DEBUG_OBJECT (qtdemux, "pushing %s event on all source pads",
GST_EVENT_TYPE_NAME (event));
for (n = 0; n < qtdemux->n_streams; n++) {
GstPad *pad;
if ((pad = qtdemux->streams[n]->pad))
gst_pad_push_event (pad, gst_event_ref (event));
}
gst_event_unref (event);
}
/* push a pending newsegment event, if any from the streaming thread */
static void
gst_qtdemux_push_pending_newsegment (GstQTDemux * qtdemux)
{
if (qtdemux->pending_newsegment) {
gst_qtdemux_push_event (qtdemux, qtdemux->pending_newsegment);
qtdemux->pending_newsegment = NULL;
}
}
typedef struct
{
guint64 media_time;
} FindData;
static gint
find_func (QtDemuxSample * s1, guint64 * media_time, gpointer user_data)
{
if (s1->timestamp > *media_time)
return 1;
return -1;
}
/* find the index of the sample that includes the data for @media_time
*
* Returns the index of the sample.
*/
static guint32
gst_qtdemux_find_index (GstQTDemux * qtdemux, QtDemuxStream * str,
guint64 media_time)
{
QtDemuxSample *result;
guint32 index;
result = gst_util_array_binary_search (str->samples, str->n_samples,
sizeof (QtDemuxSample), (GCompareDataFunc) find_func,
GST_SEARCH_MODE_BEFORE, &media_time, NULL);
if (G_LIKELY (result))
index = result - str->samples;
else
index = 0;
return index;
}
/* find the index of the keyframe needed to decode the sample at @index
* of stream @str.
*
* Returns the index of the keyframe.
*/
static guint32
gst_qtdemux_find_keyframe (GstQTDemux * qtdemux, QtDemuxStream * str,
guint32 index)
{
guint32 new_index = index;
if (index >= str->n_samples) {
new_index = str->n_samples;
goto beach;
}
/* all keyframes, return index */
if (str->all_keyframe) {
new_index = index;
goto beach;
}
/* else go back until we have a keyframe */
while (TRUE) {
if (str->samples[new_index].keyframe)
break;
if (new_index == 0)
break;
new_index--;
}
beach:
GST_DEBUG_OBJECT (qtdemux, "searching for keyframe index before index %u "
"gave %u", index, new_index);
return new_index;
}
/* find the segment for @time_position for @stream
*
* Returns -1 if the segment cannot be found.
*/
static guint32
gst_qtdemux_find_segment (GstQTDemux * qtdemux, QtDemuxStream * stream,
guint64 time_position)
{
gint i;
guint32 seg_idx;
GST_LOG_OBJECT (qtdemux, "finding segment for %" GST_TIME_FORMAT,
GST_TIME_ARGS (time_position));
/* find segment corresponding to time_position if we are looking
* for a segment. */
seg_idx = -1;
for (i = 0; i < stream->n_segments; i++) {
QtDemuxSegment *segment = &stream->segments[i];
GST_LOG_OBJECT (qtdemux,
"looking at segment %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT,
GST_TIME_ARGS (segment->time), GST_TIME_ARGS (segment->stop_time));
/* For the last segment we include stop_time in the last segment */
if (i < stream->n_segments - 1) {
if (segment->time <= time_position && time_position < segment->stop_time) {
GST_LOG_OBJECT (qtdemux, "segment %d matches", i);
seg_idx = i;
break;
}
} else {
if (segment->time <= time_position && time_position <= segment->stop_time) {
GST_LOG_OBJECT (qtdemux, "segment %d matches", i);
seg_idx = i;
break;
}
}
}
return seg_idx;
}
/* move the stream @str to the sample position @index.
*
* Updates @str->sample_index and marks discontinuity if needed.
*/
static void
gst_qtdemux_move_stream (GstQTDemux * qtdemux, QtDemuxStream * str,
guint32 index)
{
/* no change needed */
if (index == str->sample_index)
return;
GST_DEBUG_OBJECT (qtdemux, "moving to sample %u of %u", index,
str->n_samples);
/* position changed, we have a discont */
str->sample_index = index;
/* Each time we move in the stream we store the position where we are
* starting from */
str->from_sample = index;
str->discont = TRUE;
}
static void
gst_qtdemux_adjust_seek (GstQTDemux * qtdemux, gint64 desired_time,
gint64 * key_time, gint64 * key_offset)
{
guint64 min_offset;
gint64 min_byte_offset = -1;
gint n;
min_offset = desired_time;
/* for each stream, find the index of the sample in the segment
* and move back to the previous keyframe. */
for (n = 0; n < qtdemux->n_streams; n++) {
QtDemuxStream *str;
guint32 index, kindex;
guint32 seg_idx;
guint64 media_start;
guint64 media_time;
guint64 seg_time;
QtDemuxSegment *seg;
str = qtdemux->streams[n];
seg_idx = gst_qtdemux_find_segment (qtdemux, str, desired_time);
GST_DEBUG_OBJECT (qtdemux, "align segment %d", seg_idx);
/* segment not found, continue with normal flow */
if (seg_idx == -1)
continue;
/* get segment and time in the segment */
seg = &str->segments[seg_idx];
seg_time = desired_time - seg->time;
/* get the media time in the segment */
media_start = seg->media_start + seg_time;
/* get the index of the sample with media time */
index = gst_qtdemux_find_index (qtdemux, str, media_start);
GST_DEBUG_OBJECT (qtdemux, "sample for %" GST_TIME_FORMAT " at %u",
GST_TIME_ARGS (media_start), index);
/* find previous keyframe */
kindex = gst_qtdemux_find_keyframe (qtdemux, str, index);
/* if the keyframe is at a different position, we need to update the
* requested seek time */
if (index != kindex) {
index = kindex;
/* get timestamp of keyframe */
media_time = str->samples[kindex].timestamp;
GST_DEBUG_OBJECT (qtdemux, "keyframe at %u with time %" GST_TIME_FORMAT,
kindex, GST_TIME_ARGS (media_time));
/* keyframes in the segment get a chance to change the
* desired_offset. keyframes out of the segment are
* ignored. */
if (media_time >= seg->media_start) {
guint64 seg_time;
/* this keyframe is inside the segment, convert back to
* segment time */
seg_time = (media_time - seg->media_start) + seg->time;
if (seg_time < min_offset)
min_offset = seg_time;
}
}
if (min_byte_offset < 0 || str->samples[index].offset < min_byte_offset)
min_byte_offset = str->samples[index].offset;
}
if (key_time)
*key_time = min_offset;
if (key_offset)
*key_offset = min_byte_offset;
}
static gboolean
gst_qtdemux_convert_seek (GstPad * pad, GstFormat * format,
GstSeekType cur_type, gint64 * cur, GstSeekType stop_type, gint64 * stop)
{
gboolean res;
GstFormat fmt;
g_return_val_if_fail (format != NULL, FALSE);
g_return_val_if_fail (cur != NULL, FALSE);
g_return_val_if_fail (stop != NULL, FALSE);
if (*format == GST_FORMAT_TIME)
return TRUE;
fmt = GST_FORMAT_TIME;
res = TRUE;
if (cur_type != GST_SEEK_TYPE_NONE)
res = gst_pad_query_convert (pad, *format, *cur, &fmt, cur);
if (res && stop_type != GST_SEEK_TYPE_NONE)
res = gst_pad_query_convert (pad, *format, *stop, &fmt, stop);
if (res)
*format = GST_FORMAT_TIME;
return res;
}
/* perform seek in push based mode:
find BYTE position to move to based on time and delegate to upstream
*/
static gboolean
gst_qtdemux_do_push_seek (GstQTDemux * qtdemux, GstPad * pad, GstEvent * event)
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType cur_type, stop_type;
gint64 cur, stop;
gboolean res;
gint64 byte_cur;
GST_DEBUG_OBJECT (qtdemux, "doing push-based seek");
gst_event_parse_seek (event, &rate, &format, &flags,
&cur_type, &cur, &stop_type, &stop);
if (stop_type != GST_SEEK_TYPE_NONE)
goto unsupported_seek;
stop = -1;
/* only forward streaming and seeking is possible */
if (rate <= 0)
goto unsupported_seek;
/* convert to TIME if needed and possible */
if (!gst_qtdemux_convert_seek (pad, &format, cur_type, &cur,
stop_type, &stop))
goto no_format;
/* find reasonable corresponding BYTE position,
* also try to mind about keyframes, since we can not go back a bit for them
* later on */
gst_qtdemux_adjust_seek (qtdemux, cur, NULL, &byte_cur);
if (byte_cur == -1)
goto abort_seek;
GST_DEBUG_OBJECT (qtdemux, "Pushing BYTE seek rate %g, "
"start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, rate, byte_cur,
stop);
/* BYTE seek event */
event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, cur_type, byte_cur,
stop_type, stop);
res = gst_pad_push_event (qtdemux->sinkpad, event);
return res;
/* ERRORS */
abort_seek:
{
GST_DEBUG_OBJECT (qtdemux, "could not determine byte position to seek to, "
"seek aborted.");
return FALSE;
}
unsupported_seek:
{
GST_DEBUG_OBJECT (qtdemux, "unsupported seek, seek aborted.");
return FALSE;
}
no_format:
{
GST_DEBUG_OBJECT (qtdemux, "unsupported format given, seek aborted.");
return FALSE;
}
}
/* perform the seek.
*
* We set all segment_indexes in the streams to unknown and
* adjust the time_position to the desired position. this is enough
* to trigger a segment switch in the streaming thread to start
* streaming from the desired position.
*
* Keyframe seeking is a little more complicated when dealing with
* segments. Ideally we want to move to the previous keyframe in
* the segment but there might not be a keyframe in the segment. In
* fact, none of the segments could contain a keyframe. We take a
* practical approach: seek to the previous keyframe in the segment,
* if there is none, seek to the beginning of the segment.
*
* Called with STREAM_LOCK
*/
static gboolean
gst_qtdemux_perform_seek (GstQTDemux * qtdemux, GstSegment * segment)
{
gint64 desired_offset;
gint n;
desired_offset = segment->last_stop;
GST_DEBUG_OBJECT (qtdemux, "seeking to %" GST_TIME_FORMAT,
GST_TIME_ARGS (desired_offset));
if (segment->flags & GST_SEEK_FLAG_KEY_UNIT) {
gint64 min_offset;
gst_qtdemux_adjust_seek (qtdemux, desired_offset, &min_offset, NULL);
GST_DEBUG_OBJECT (qtdemux, "keyframe seek, align to %"
GST_TIME_FORMAT, GST_TIME_ARGS (min_offset));
desired_offset = min_offset;
}
/* and set all streams to the final position */
for (n = 0; n < qtdemux->n_streams; n++) {
QtDemuxStream *stream = qtdemux->streams[n];
stream->time_position = desired_offset;
stream->sample_index = -1;
stream->segment_index = -1;
stream->last_ret = GST_FLOW_OK;
stream->sent_eos = FALSE;
}
segment->last_stop = desired_offset;
segment->time = desired_offset;
/* we stop at the end */
if (segment->stop == -1)
segment->stop = segment->duration;
return TRUE;
}
/* do a seek in pull based mode */
static gboolean
gst_qtdemux_do_seek (GstQTDemux * qtdemux, GstPad * pad, GstEvent * event)
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType cur_type, stop_type;
gint64 cur, stop;
gboolean flush;
gboolean update;
GstSegment seeksegment;
int i;
if (event) {
GST_DEBUG_OBJECT (qtdemux, "doing seek with event");
gst_event_parse_seek (event, &rate, &format, &flags,
&cur_type, &cur, &stop_type, &stop);
/* we have to have a format as the segment format. Try to convert
* if not. */
if (!gst_qtdemux_convert_seek (pad, &format, cur_type, &cur,
stop_type, &stop))
goto no_format;
GST_DEBUG_OBJECT (qtdemux, "seek format %s", gst_format_get_name (format));
} else {
GST_DEBUG_OBJECT (qtdemux, "doing seek without event");
flags = 0;
}
flush = flags & GST_SEEK_FLAG_FLUSH;
/* stop streaming, either by flushing or by pausing the task */
if (flush) {
/* unlock upstream pull_range */
gst_pad_push_event (qtdemux->sinkpad, gst_event_new_flush_start ());
/* make sure out loop function exits */
gst_qtdemux_push_event (qtdemux, gst_event_new_flush_start ());
} else {
/* non flushing seek, pause the task */
gst_pad_pause_task (qtdemux->sinkpad);
}
/* wait for streaming to finish */
GST_PAD_STREAM_LOCK (qtdemux->sinkpad);
/* copy segment, we need this because we still need the old
* segment when we close the current segment. */
memcpy (&seeksegment, &qtdemux->segment, sizeof (GstSegment));
if (event) {
/* configure the segment with the seek variables */
GST_DEBUG_OBJECT (qtdemux, "configuring seek");
gst_segment_set_seek (&seeksegment, rate, format, flags,
cur_type, cur, stop_type, stop, &update);
}
/* now do the seek, this actually never returns FALSE */
gst_qtdemux_perform_seek (qtdemux, &seeksegment);
/* prepare for streaming again */
if (flush) {
gst_pad_push_event (qtdemux->sinkpad, gst_event_new_flush_stop ());
gst_qtdemux_push_event (qtdemux, gst_event_new_flush_stop ());
} else if (qtdemux->segment_running) {
/* we are running the current segment and doing a non-flushing seek,
* close the segment first based on the last_stop. */
GST_DEBUG_OBJECT (qtdemux, "closing running segment %" G_GINT64_FORMAT
" to %" G_GINT64_FORMAT, qtdemux->segment.start,
qtdemux->segment.last_stop);
if (qtdemux->segment.rate >= 0) {
/* FIXME, rate is the product of the global rate and the (quicktime)
* segment rate. */
qtdemux->pending_newsegment = gst_event_new_new_segment (TRUE,
qtdemux->segment.rate, qtdemux->segment.format,
qtdemux->segment.start, qtdemux->segment.last_stop,
qtdemux->segment.time);
} else { /* For Reverse Playback */
guint64 stop;
if ((stop = qtdemux->segment.stop) == -1)
stop = qtdemux->segment.duration;
/* for reverse playback, we played from stop to last_stop. */
qtdemux->pending_newsegment = gst_event_new_new_segment (TRUE,
qtdemux->segment.rate, qtdemux->segment.format,
qtdemux->segment.last_stop, stop, qtdemux->segment.last_stop);
}
}
/* commit the new segment */
memcpy (&qtdemux->segment, &seeksegment, sizeof (GstSegment));
if (qtdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT_CAST (qtdemux),
gst_message_new_segment_start (GST_OBJECT_CAST (qtdemux),
qtdemux->segment.format, qtdemux->segment.last_stop));
}
/* restart streaming, NEWSEGMENT will be sent from the streaming
* thread. */
qtdemux->segment_running = TRUE;
for (i = 0; i < qtdemux->n_streams; i++)
qtdemux->streams[i]->last_ret = GST_FLOW_OK;
gst_pad_start_task (qtdemux->sinkpad, (GstTaskFunction) gst_qtdemux_loop,
qtdemux->sinkpad);
GST_PAD_STREAM_UNLOCK (qtdemux->sinkpad);
return TRUE;
/* ERRORS */
no_format:
{
GST_DEBUG_OBJECT (qtdemux, "unsupported format given, seek aborted.");
return FALSE;
}
}
static gboolean
gst_qtdemux_handle_src_event (GstPad * pad, GstEvent * event)
{
gboolean res = TRUE;
GstQTDemux *qtdemux = GST_QTDEMUX (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
if (qtdemux->pullbased) {
res = gst_qtdemux_do_seek (qtdemux, pad, event);
} else if (qtdemux->state == QTDEMUX_STATE_MOVIE && qtdemux->n_streams) {
res = gst_qtdemux_do_push_seek (qtdemux, pad, event);
} else {
GST_DEBUG_OBJECT (qtdemux,
"ignoring seek in push mode in current state");
res = FALSE;
}
gst_event_unref (event);
break;
case GST_EVENT_QOS:
case GST_EVENT_NAVIGATION:
res = FALSE;
gst_event_unref (event);
break;
default:
res = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (qtdemux);
return res;
}
/* stream/index return sample that is min/max w.r.t. byte position,
* time is min/max w.r.t. time of samples,
* the latter need not be time of the former sample */
static void
gst_qtdemux_find_sample (GstQTDemux * qtdemux, gint64 byte_pos, gboolean fw,
gboolean set, QtDemuxStream ** _stream, gint * _index, gint64 * _time)
{
gint i, n, index;
gint64 time, min_time;
QtDemuxStream *stream;
min_time = -1;
stream = NULL;
index = -1;
for (n = 0; n < qtdemux->n_streams; ++n) {
QtDemuxStream *str;
gint inc;
gboolean set_sample;
str = qtdemux->streams[n];
set_sample = !set;
if (fw) {
i = 0;
inc = 1;
} else {
i = str->n_samples - 1;
inc = -1;
}
for (; (i >= 0) && (i < str->n_samples); i += inc) {
if (str->samples[i].size &&
((fw && (str->samples[i].offset >= byte_pos)) ||
(!fw &&
(str->samples[i].offset + str->samples[i].size <=
byte_pos)))) {
/* move stream to first available sample */
if (set) {
gst_qtdemux_move_stream (qtdemux, str, i);
set_sample = TRUE;
}
/* determine min/max time */
time = str->samples[i].timestamp + str->samples[i].pts_offset;
if (min_time == -1 || (fw && min_time > time) ||
(!fw && min_time < time)) {
min_time = time;
}
/* determine stream with leading sample, to get its position */
/* only needed in fw case */
if (fw && (!stream ||
str->samples[i].offset < stream->samples[index].offset)) {
stream = str;
index = i;
}
break;
}
}
/* no sample for this stream, mark eos */
if (!set_sample)
gst_qtdemux_move_stream (qtdemux, str, str->n_samples);
}
if (_time)
*_time = min_time;
if (_stream)
*_stream = stream;
if (_index)
*_index = index;
}
static gboolean
gst_qtdemux_handle_sink_event (GstPad * sinkpad, GstEvent * event)
{
GstQTDemux *demux = GST_QTDEMUX (GST_PAD_PARENT (sinkpad));
gboolean res;
GST_LOG_OBJECT (demux, "handling %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:
{
GstFormat format;
gdouble rate, arate;
gint64 start, stop, time, offset = 0;
QtDemuxStream *stream;
gint idx;
gboolean update;
GstSegment segment;
/* some debug output */
gst_segment_init (&segment, GST_FORMAT_UNDEFINED);
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
&start, &stop, &time);
gst_segment_set_newsegment_full (&segment, update, rate, arate, format,
start, stop, time);
GST_DEBUG_OBJECT (demux,
"received format %d newsegment %" GST_SEGMENT_FORMAT, format,
&segment);
/* chain will send initial newsegment after pads have been added */
if (demux->state != QTDEMUX_STATE_MOVIE || !demux->n_streams) {
GST_DEBUG_OBJECT (demux, "still starting, eating event");
goto exit;
}
/* we only expect a BYTE segment, e.g. following a seek */
if (format == GST_FORMAT_BYTES) {
if (start > 0) {
offset = start;
gst_qtdemux_find_sample (demux, start, TRUE, FALSE, NULL, NULL,
&start);
start = MAX (start, 0);
}
if (stop > 0) {
gst_qtdemux_find_sample (demux, stop, FALSE, FALSE, NULL, NULL,
&stop);
stop = MAX (stop, 0);
}
} else {
GST_DEBUG_OBJECT (demux, "unsupported segment format, ignoring");
goto exit;
}
/* accept upstream's notion of segment and distribute along */
gst_segment_set_newsegment_full (&demux->segment, update, rate, arate,
GST_FORMAT_TIME, start, stop, start);
GST_DEBUG_OBJECT (demux, "Pushing newseg update %d, rate %g, "
"applied rate %g, format %d, start %" G_GINT64_FORMAT ", "
"stop %" G_GINT64_FORMAT, update, rate, arate, GST_FORMAT_TIME,
start, stop);
gst_qtdemux_push_event (demux,
gst_event_new_new_segment_full (update, rate, arate, GST_FORMAT_TIME,
start, stop, start));
/* clear leftover in current segment, if any */
gst_adapter_clear (demux->adapter);
/* set up streaming thread */
gst_qtdemux_find_sample (demux, offset, TRUE, TRUE, &stream, &idx, NULL);
demux->offset = offset;
if (stream) {
demux->todrop = stream->samples[idx].offset - offset;
demux->neededbytes = demux->todrop + stream->samples[idx].size;
} else {
/* set up for EOS */
demux->neededbytes = -1;
demux->todrop = 0;
}
exit:
gst_event_unref (event);
res = TRUE;
goto drop;
break;
}
case GST_EVENT_FLUSH_STOP:
{
gint i;
/* clean up, force EOS if no more info follows */
gst_adapter_clear (demux->adapter);
demux->offset = 0;
demux->neededbytes = -1;
/* reset flow return, e.g. following seek */
for (i = 0; i < demux->n_streams; i++) {
demux->streams[i]->last_ret = GST_FLOW_OK;
demux->streams[i]->sent_eos = FALSE;
}
break;
}
case GST_EVENT_EOS:
/* If we are in push mode, and get an EOS before we've seen any streams,
* then error out - we have nowhere to send the EOS */
if (!demux->pullbased && demux->n_streams == 0) {
GST_ELEMENT_ERROR (demux, STREAM, DECODE,
(_("This file contains no playable streams.")),
("no known streams found"));
}
break;
default:
break;
}
res = gst_pad_event_default (demux->sinkpad, event);
drop:
return res;
}
static GstStateChangeReturn
gst_qtdemux_change_state (GstElement * element, GstStateChange transition)
{
GstQTDemux *qtdemux = GST_QTDEMUX (element);
GstStateChangeReturn result = GST_STATE_CHANGE_FAILURE;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
default:
break;
}
result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:{
gint n;
qtdemux->state = QTDEMUX_STATE_INITIAL;
qtdemux->last_ts = GST_CLOCK_TIME_NONE;
qtdemux->neededbytes = 16;
qtdemux->todrop = 0;
qtdemux->pullbased = FALSE;
qtdemux->offset = 0;
qtdemux->mdatoffset = GST_CLOCK_TIME_NONE;
if (qtdemux->mdatbuffer)
gst_buffer_unref (qtdemux->mdatbuffer);
qtdemux->mdatbuffer = NULL;
if (qtdemux->comp_brands)
gst_buffer_unref (qtdemux->comp_brands);
qtdemux->comp_brands = NULL;
if (qtdemux->tag_list)
gst_tag_list_free (qtdemux->tag_list);
qtdemux->tag_list = NULL;
gst_adapter_clear (qtdemux->adapter);
for (n = 0; n < qtdemux->n_streams; n++) {
QtDemuxStream *stream = qtdemux->streams[n];
while (stream->buffers) {
gst_buffer_unref (GST_BUFFER_CAST (stream->buffers->data));
stream->buffers =
g_slist_delete_link (stream->buffers, stream->buffers);
}
if (stream->pad)
gst_element_remove_pad (element, stream->pad);
if (stream->samples)
g_free (stream->samples);
if (stream->caps)
gst_caps_unref (stream->caps);
if (stream->segments)
g_free (stream->segments);
if (stream->pending_tags)
gst_tag_list_free (stream->pending_tags);
g_free (stream);
}
qtdemux->major_brand = 0;
qtdemux->n_streams = 0;
qtdemux->n_video_streams = 0;
qtdemux->n_audio_streams = 0;
qtdemux->n_subp_streams = 0;
gst_segment_init (&qtdemux->segment, GST_FORMAT_TIME);
break;
}
default:
break;
}
return result;
}
static void
qtdemux_parse_ftyp (GstQTDemux * qtdemux, const guint8 * buffer, gint length)
{
/* only consider at least a sufficiently complete ftyp atom */
if (length >= 20) {
GstBuffer *buf;
qtdemux->major_brand = QT_FOURCC (buffer + 8);
GST_DEBUG_OBJECT (qtdemux, "major brand: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (qtdemux->major_brand));
buf = qtdemux->comp_brands = gst_buffer_new_and_alloc (length - 16);
memcpy (GST_BUFFER_DATA (buf), buffer + 16, GST_BUFFER_SIZE (buf));
}
}
static void
extract_initial_length_and_fourcc (const guint8 * data, guint64 * plength,
guint32 * pfourcc)
{
guint64 length;
guint32 fourcc;
length = QT_UINT32 (data);
GST_DEBUG ("length 0x%08" G_GINT64_MODIFIER "x", length);
fourcc = QT_FOURCC (data + 4);
GST_DEBUG ("atom type %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (fourcc));
if (length == 0) {
length = G_MAXUINT32;
} else if (length == 1) {
/* this means we have an extended size, which is the 64 bit value of
* the next 8 bytes */
length = QT_UINT64 (data + 8);
GST_DEBUG ("length 0x%08" G_GINT64_MODIFIER "x", length);
}
if (plength)
*plength = length;
if (pfourcc)
*pfourcc = fourcc;
}
static GstFlowReturn
gst_qtdemux_loop_state_header (GstQTDemux * qtdemux)
{
guint64 length = 0;
guint32 fourcc = 0;
GstBuffer *buf = NULL;
GstFlowReturn ret = GST_FLOW_OK;
guint64 cur_offset = qtdemux->offset;
ret = gst_pad_pull_range (qtdemux->sinkpad, cur_offset, 16, &buf);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto beach;
if (G_LIKELY (GST_BUFFER_SIZE (buf) == 16))
extract_initial_length_and_fourcc (GST_BUFFER_DATA (buf), &length, &fourcc);
gst_buffer_unref (buf);
if (G_UNLIKELY (length == 0)) {
GST_ELEMENT_ERROR (qtdemux, STREAM, DECODE,
(_("This file is invalid and cannot be played.")),
("Header atom '%" GST_FOURCC_FORMAT "' has empty length",
GST_FOURCC_ARGS (fourcc)));
ret = GST_FLOW_ERROR;
goto beach;
}
switch (fourcc) {
case FOURCC_mdat:
case FOURCC_free:
case FOURCC_wide:
case FOURCC_PICT:
case FOURCC_pnot:
{
GST_LOG_OBJECT (qtdemux,
"skipping atom '%" GST_FOURCC_FORMAT "' at %" G_GUINT64_FORMAT,
GST_FOURCC_ARGS (fourcc), cur_offset);
qtdemux->offset += length;
break;
}
case FOURCC_moov:
{
GstBuffer *moov;
ret = gst_pad_pull_range (qtdemux->sinkpad, cur_offset, length, &moov);
if (ret != GST_FLOW_OK)
goto beach;
if (length != GST_BUFFER_SIZE (moov)) {
/* Some files have a 'moov' atom at the end of the file which contains
* a terminal 'free' atom where the body of the atom is missing.
* Check for, and permit, this special case.
*/
if (GST_BUFFER_SIZE (moov) >= 8) {
guint8 *final_data = GST_BUFFER_DATA (moov) +
(GST_BUFFER_SIZE (moov) - 8);
guint32 final_length = QT_UINT32 (final_data);
guint32 final_fourcc = QT_FOURCC (final_data + 4);
if (final_fourcc == FOURCC_free &&
GST_BUFFER_SIZE (moov) + final_length - 8 == length) {
/* Ok, we've found that special case. Allocate a new buffer with
* that free atom actually present. */
GstBuffer *newmoov = gst_buffer_new_and_alloc (length);
gst_buffer_copy_metadata (newmoov, moov,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS |
GST_BUFFER_COPY_CAPS);
memcpy (GST_BUFFER_DATA (newmoov), GST_BUFFER_DATA (moov),
GST_BUFFER_SIZE (moov));
memset (GST_BUFFER_DATA (newmoov) + GST_BUFFER_SIZE (moov), 0,
final_length - 8);
gst_buffer_unref (moov);
moov = newmoov;
}
}
}
if (length != GST_BUFFER_SIZE (moov)) {
GST_ELEMENT_ERROR (qtdemux, STREAM, DECODE,
(_("This file is incomplete and cannot be played.")),
("We got less than expected (received %u, wanted %u, offset %"
G_GUINT64_FORMAT ")",
GST_BUFFER_SIZE (moov), (guint) length, cur_offset));
ret = GST_FLOW_ERROR;
goto beach;
}
qtdemux->offset += length;
qtdemux_parse_moov (qtdemux, GST_BUFFER_DATA (moov), length);
qtdemux_node_dump (qtdemux, qtdemux->moov_node);
qtdemux_parse_tree (qtdemux);
g_node_destroy (qtdemux->moov_node);
gst_buffer_unref (moov);
qtdemux->moov_node = NULL;
qtdemux->state = QTDEMUX_STATE_MOVIE;
GST_DEBUG_OBJECT (qtdemux, "switching state to STATE_MOVIE (%d)",
qtdemux->state);
break;
}
case FOURCC_ftyp:
{
GstBuffer *ftyp;
/* extract major brand; might come in handy for ISO vs QT issues */
ret = gst_qtdemux_pull_atom (qtdemux, cur_offset, length, &ftyp);
if (ret != GST_FLOW_OK)
goto beach;
qtdemux->offset += length;
qtdemux_parse_ftyp (qtdemux, GST_BUFFER_DATA (ftyp),
GST_BUFFER_SIZE (ftyp));
gst_buffer_unref (ftyp);
break;
}
default:
{
GstBuffer *unknown;
GST_LOG_OBJECT (qtdemux,
"unknown %08x '%" GST_FOURCC_FORMAT "' of size %" G_GUINT64_FORMAT
" at %" G_GUINT64_FORMAT, fourcc, GST_FOURCC_ARGS (fourcc), length,
cur_offset);
ret = gst_qtdemux_pull_atom (qtdemux, cur_offset, length, &unknown);
if (ret != GST_FLOW_OK)
goto beach;
GST_MEMDUMP ("Unknown tag", GST_BUFFER_DATA (unknown),
GST_BUFFER_SIZE (unknown));
gst_buffer_unref (unknown);
qtdemux->offset += length;
break;
}
}
beach:
return ret;
}
/* Seeks to the previous keyframe of the indexed stream and
* aligns other streams with respect to the keyframe timestamp
* of indexed stream. Only called in case of Reverse Playback
*/
static GstFlowReturn
gst_qtdemux_seek_to_previous_keyframe (GstQTDemux * qtdemux)
{
guint8 n = 0;
guint32 seg_idx = 0, k_index = 0;
guint64 k_pos = 0, last_stop = 0;
QtDemuxSegment *seg = NULL;
QtDemuxStream *ref_str = NULL;
/* Now we choose an arbitrary stream, get the previous keyframe timestamp
* and finally align all the other streams on that timestamp with their
* respective keyframes */
for (n = 0; n < qtdemux->n_streams; n++) {
QtDemuxStream *str = qtdemux->streams[n];
seg_idx = gst_qtdemux_find_segment (qtdemux, str,
qtdemux->segment.last_stop);
/* segment not found, continue with normal flow */
if (seg_idx == -1)
continue;
/* No candidate yet, take that one */
if (!ref_str) {
ref_str = str;
continue;
}
/* So that stream has a segment, we prefer video streams */
if (str->subtype == FOURCC_vide) {
ref_str = str;
break;
}
}
if (G_UNLIKELY (!ref_str)) {
GST_DEBUG_OBJECT (qtdemux, "couldn't find any stream");
goto eos;
}
if (G_UNLIKELY (!ref_str->from_sample)) {
GST_DEBUG_OBJECT (qtdemux, "reached the beginning of the file");
goto eos;
}
/* So that stream has been playing from from_sample to to_sample. We will
* get the timestamp of the previous sample and search for a keyframe before
* that. For audio streams we do an arbitrary jump in the past (10 samples) */
if (ref_str->subtype == FOURCC_vide) {
k_index = gst_qtdemux_find_keyframe (qtdemux, ref_str,
ref_str->from_sample - 1);
} else {
k_index = ref_str->from_sample - 10;
}
/* get current segment for that stream */
seg = &ref_str->segments[ref_str->segment_index];
/* Crawl back through segments to find the one containing this I frame */
while (ref_str->samples[k_index].timestamp < seg->media_start) {
GST_DEBUG_OBJECT (qtdemux, "keyframe position is out of segment %u",
ref_str->segment_index);
if (G_UNLIKELY (!ref_str->segment_index)) {
/* Reached first segment, let's consider it's EOS */
goto eos;
}
ref_str->segment_index--;
seg = &ref_str->segments[ref_str->segment_index];
}
/* Calculate time position of the keyframe and where we should stop */
k_pos = (ref_str->samples[k_index].timestamp - seg->media_start) + seg->time;
last_stop = ref_str->samples[ref_str->from_sample].timestamp;
last_stop = (last_stop - seg->media_start) + seg->time;
GST_DEBUG_OBJECT (qtdemux, "preferred stream played from sample %u, "
"now going to sample %u (pts %" GST_TIME_FORMAT ")", ref_str->from_sample,
k_index, GST_TIME_ARGS (k_pos));
/* Set last_stop with the keyframe timestamp we pushed of that stream */
gst_segment_set_last_stop (&qtdemux->segment, GST_FORMAT_TIME, last_stop);
GST_DEBUG_OBJECT (qtdemux, "last_stop now is %" GST_TIME_FORMAT,
GST_TIME_ARGS (last_stop));
if (G_UNLIKELY (last_stop < qtdemux->segment.start)) {
GST_DEBUG_OBJECT (qtdemux, "reached the beginning of segment");
goto eos;
}
/* Align them all on this */
for (n = 0; n < qtdemux->n_streams; n++) {
guint32 index = 0;
guint64 media_start = 0, seg_time = 0;
QtDemuxStream *str = qtdemux->streams[n];
seg_idx = gst_qtdemux_find_segment (qtdemux, str, k_pos);
GST_DEBUG_OBJECT (qtdemux, "align segment %d", seg_idx);
/* segment not found, continue with normal flow */
if (seg_idx == -1)
continue;
/* get segment and time in the segment */
seg = &str->segments[seg_idx];
seg_time = k_pos - seg->time;
/* get the media time in the segment */
media_start = seg->media_start + seg_time;
/* get the index of the sample with media time */
index = gst_qtdemux_find_index (qtdemux, str, media_start);
GST_DEBUG_OBJECT (qtdemux, "sample for %" GST_TIME_FORMAT " at %u",
GST_TIME_ARGS (media_start), index);
/* find previous keyframe */
k_index = gst_qtdemux_find_keyframe (qtdemux, str, index);
/* Remember until where we want to go */
str->to_sample = str->from_sample - 1;
/* Define our time position */
str->time_position =
(str->samples[k_index].timestamp - seg->media_start) + seg->time;
/* Now seek back in time */
gst_qtdemux_move_stream (qtdemux, str, k_index);
GST_DEBUG_OBJECT (qtdemux, "keyframe at %u, time position %"
GST_TIME_FORMAT " playing from sample %u to %u", k_index,
GST_TIME_ARGS (str->time_position), str->from_sample, str->to_sample);
}
return GST_FLOW_OK;
eos:
return GST_FLOW_UNEXPECTED;
}
/* activate the given segment number @seg_idx of @stream at time @offset.
* @offset is an absolute global position over all the segments.
*
* This will push out a NEWSEGMENT event with the right values and
* position the stream index to the first decodable sample before
* @offset.
*/
static gboolean
gst_qtdemux_activate_segment (GstQTDemux * qtdemux, QtDemuxStream * stream,
guint32 seg_idx, guint64 offset)
{
GstEvent *event;
QtDemuxSegment *segment;
guint32 index, kf_index;
guint64 seg_time;
guint64 start, stop, time;
gdouble rate;
GST_LOG_OBJECT (qtdemux, "activate segment %d, offset %" G_GUINT64_FORMAT,
seg_idx, offset);
/* update the current segment */
stream->segment_index = seg_idx;
/* get the segment */
segment = &stream->segments[seg_idx];
if (G_UNLIKELY (offset < segment->time)) {
GST_WARNING_OBJECT (qtdemux, "offset < segment->time %" G_GUINT64_FORMAT,
segment->time);
return FALSE;
}
/* get time in this segment */
seg_time = offset - segment->time;
GST_LOG_OBJECT (qtdemux, "seg_time %" GST_TIME_FORMAT,
GST_TIME_ARGS (seg_time));
if (G_UNLIKELY (seg_time > segment->duration)) {
GST_LOG_OBJECT (qtdemux, "seg_time > segment->duration %" GST_TIME_FORMAT,
GST_TIME_ARGS (segment->duration));
return FALSE;
}
/* qtdemux->segment.stop is in outside-time-realm, whereas
* segment->media_stop is in track-time-realm.
*
* In order to compare the two, we need to bring segment.stop
* into the track-time-realm */
if (qtdemux->segment.stop == -1)
stop = segment->media_stop;
else
stop =
MIN (segment->media_stop,
qtdemux->segment.stop - segment->time + segment->media_start);
if (qtdemux->segment.rate >= 0) {
start = MIN (segment->media_start + seg_time, stop);
time = offset;
} else {
start = segment->media_start;
stop = MIN (segment->media_start + seg_time, stop);
time = segment->time;
}
GST_DEBUG_OBJECT (qtdemux, "newsegment %d from %" GST_TIME_FORMAT
" to %" GST_TIME_FORMAT ", time %" GST_TIME_FORMAT, seg_idx,
GST_TIME_ARGS (start), GST_TIME_ARGS (stop), GST_TIME_ARGS (time));
/* combine global rate with that of the segment */
rate = segment->rate * qtdemux->segment.rate;
/* update the segment values used for clipping */
gst_segment_init (&stream->segment, GST_FORMAT_TIME);
gst_segment_set_newsegment (&stream->segment, FALSE, rate, GST_FORMAT_TIME,
start, stop, time);
/* now prepare and send the segment */
if (stream->pad) {
event = gst_event_new_new_segment (FALSE, rate, GST_FORMAT_TIME,
start, stop, time);
gst_pad_push_event (stream->pad, event);
/* assume we can send more data now */
stream->last_ret = GST_FLOW_OK;
/* clear to send tags on this pad now */
gst_qtdemux_push_tags (qtdemux, stream);
}
/* and move to the keyframe before the indicated media time of the
* segment */
if (qtdemux->segment.rate >= 0) {
index = gst_qtdemux_find_index (qtdemux, stream, start);
stream->to_sample = stream->n_samples;
GST_DEBUG_OBJECT (qtdemux, "moving data pointer to %" GST_TIME_FORMAT
", index: %u, pts %" GST_TIME_FORMAT, GST_TIME_ARGS (start), index,
GST_TIME_ARGS (stream->samples[index].timestamp));
} else {
index = gst_qtdemux_find_index (qtdemux, stream, stop);
stream->to_sample = index;
GST_DEBUG_OBJECT (qtdemux, "moving data pointer to %" GST_TIME_FORMAT
", index: %u, pts %" GST_TIME_FORMAT, GST_TIME_ARGS (stop), index,
GST_TIME_ARGS (stream->samples[index].timestamp));
}
/* we're at the right spot */
if (index == stream->sample_index) {
GST_DEBUG_OBJECT (qtdemux, "we are at the right index");
return TRUE;
}
/* find keyframe of the target index */
kf_index = gst_qtdemux_find_keyframe (qtdemux, stream, index);
/* if we move forwards, we don't have to go back to the previous
* keyframe since we already sent that. We can also just jump to
* the keyframe right before the target index if there is one. */
if (index > stream->sample_index) {
/* moving forwards check if we move past a keyframe */
if (kf_index > stream->sample_index) {
GST_DEBUG_OBJECT (qtdemux, "moving forwards to keyframe at %u (pts %"
GST_TIME_FORMAT, kf_index,
GST_TIME_ARGS (stream->samples[kf_index].timestamp));
gst_qtdemux_move_stream (qtdemux, stream, kf_index);
} else {
GST_DEBUG_OBJECT (qtdemux, "moving forwards, keyframe at %u (pts %"
GST_TIME_FORMAT " already sent", kf_index,
GST_TIME_ARGS (stream->samples[kf_index].timestamp));
}
} else {
GST_DEBUG_OBJECT (qtdemux, "moving backwards to keyframe at %u (pts %"
GST_TIME_FORMAT, kf_index,
GST_TIME_ARGS (stream->samples[kf_index].timestamp));
gst_qtdemux_move_stream (qtdemux, stream, kf_index);
}
return TRUE;
}
/* prepare to get the current sample of @stream, getting essential values.
*
* This function will also prepare and send the segment when needed.
*
* Return FALSE if the stream is EOS.
*/
static gboolean
gst_qtdemux_prepare_current_sample (GstQTDemux * qtdemux,
QtDemuxStream * stream, guint64 * offset, guint * size, guint64 * timestamp,
guint64 * duration, gboolean * keyframe)
{
QtDemuxSample *sample;
guint64 time_position;
guint32 seg_idx;
g_return_val_if_fail (stream != NULL, FALSE);
time_position = stream->time_position;
if (G_UNLIKELY (time_position == -1))
goto eos;
seg_idx = stream->segment_index;
if (G_UNLIKELY (seg_idx == -1)) {
/* find segment corresponding to time_position if we are looking
* for a segment. */
seg_idx = gst_qtdemux_find_segment (qtdemux, stream, time_position);
/* nothing found, we're really eos */
if (seg_idx == -1)
goto eos;
}
/* different segment, activate it, sample_index will be set. */
if (G_UNLIKELY (stream->segment_index != seg_idx))
gst_qtdemux_activate_segment (qtdemux, stream, seg_idx, time_position);
GST_LOG_OBJECT (qtdemux, "segment active, index = %u of %u",
stream->sample_index, stream->n_samples);
/* send out pending buffers */
while (stream->buffers) {
GstBuffer *buffer = (GstBuffer *) stream->buffers->data;
if (G_UNLIKELY (stream->discont)) {
GST_LOG_OBJECT (qtdemux, "marking discont buffer");
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
stream->discont = FALSE;
}
gst_buffer_set_caps (buffer, stream->caps);
gst_pad_push (stream->pad, buffer);
stream->buffers = g_slist_delete_link (stream->buffers, stream->buffers);
}
if (G_UNLIKELY (stream->sample_index >= stream->n_samples))
goto eos;
/* now get the info for the sample we're at */
sample = &stream->samples[stream->sample_index];
*timestamp = sample->timestamp + sample->pts_offset;
*offset = sample->offset;
*size = sample->size;
*duration = sample->duration;
*keyframe = stream->all_keyframe || sample->keyframe;
/* add padding */
if (stream->padding) {
*offset += stream->padding;
*size -= stream->padding;
}
return TRUE;
/* special cases */
eos:
{
stream->time_position = -1;
return FALSE;
}
}
/* move to the next sample in @stream.
*
* Moves to the next segment when needed.
*/
static void
gst_qtdemux_advance_sample (GstQTDemux * qtdemux, QtDemuxStream * stream)
{
QtDemuxSample *sample;
QtDemuxSegment *segment;
if (G_UNLIKELY (stream->sample_index >= stream->to_sample)) {
/* Mark the stream as EOS */
GST_DEBUG_OBJECT (qtdemux, "reached max allowed sample %u, mark EOS",
stream->to_sample);
stream->time_position = -1;
return;
}
/* move to next sample */
stream->sample_index++;
/* get current segment */
segment = &stream->segments[stream->segment_index];
/* reached the last sample, we need the next segment */
if (G_UNLIKELY (stream->sample_index >= stream->n_samples))
goto next_segment;
/* get next sample */
sample = &stream->samples[stream->sample_index];
/* see if we are past the segment */
if (G_UNLIKELY (sample->timestamp >= segment->media_stop))
goto next_segment;
if (sample->timestamp >= segment->media_start) {
/* inside the segment, update time_position, looks very familiar to
* GStreamer segments, doesn't it? */
stream->time_position =
(sample->timestamp - segment->media_start) + segment->time;
} else {
/* not yet in segment, time does not yet increment. This means
* that we are still prerolling keyframes to the decoder so it can
* decode the first sample of the segment. */
stream->time_position = segment->time;
}
return;
/* move to the next segment */
next_segment:
{
GST_DEBUG_OBJECT (qtdemux, "segment %d ended ", stream->segment_index);
if (stream->segment_index == stream->n_segments - 1) {
/* are we at the end of the last segment, we're EOS */
stream->time_position = -1;
} else {
/* else we're only at the end of the current segment */
stream->time_position = segment->stop_time;
}
/* make sure we select a new segment */
stream->segment_index = -1;
}
}
static void
gst_qtdemux_sync_streams (GstQTDemux * demux)
{
gint i;
if (demux->n_streams <= 1)
return;
for (i = 0; i < demux->n_streams; i++) {
QtDemuxStream *stream;
GstClockTime end_time;
stream = demux->streams[i];
if (!stream->pad)
continue;
/* TODO advance time on subtitle streams here, if any some day */
/* some clips/trailers may have unbalanced streams at the end,
* so send EOS on shorter stream to prevent stalling others */
/* do not mess with EOS if SEGMENT seeking */
if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT)
continue;
if (demux->pullbased) {
/* loop mode is sample time based */
if (stream->time_position != -1)
continue;
} else {
/* push mode is byte position based */
if (stream->samples[stream->n_samples - 1].offset >= demux->offset)
continue;
}
if (stream->sent_eos)
continue;
/* only act if some gap */
end_time = stream->segments[stream->n_segments - 1].stop_time;
GST_LOG_OBJECT (demux, "current position: %" GST_TIME_FORMAT
", stream end: %" GST_TIME_FORMAT, GST_TIME_ARGS (end_time),
GST_TIME_ARGS (demux->segment.last_stop));
if (end_time + 2 * GST_SECOND < demux->segment.last_stop) {
GST_DEBUG_OBJECT (demux, "sending EOS for stream %s",
GST_PAD_NAME (stream->pad));
stream->sent_eos = TRUE;
gst_pad_push_event (stream->pad, gst_event_new_eos ());
}
}
}
/* UNEXPECTED and NOT_LINKED need to be combined. This means that we return:
*
* GST_FLOW_NOT_LINKED: when all pads NOT_LINKED.
* GST_FLOW_UNEXPECTED: when all pads UNEXPECTED or NOT_LINKED.
*/
static GstFlowReturn
gst_qtdemux_combine_flows (GstQTDemux * demux, QtDemuxStream * stream,
GstFlowReturn ret)
{
gint i;
gboolean unexpected = FALSE, not_linked = TRUE;
GST_LOG_OBJECT (demux, "flow return: %s", gst_flow_get_name (ret));
/* store the value */
stream->last_ret = ret;
for (i = 0; i < demux->n_streams; i++) {
QtDemuxStream *ostream = demux->streams[i];
ret = ostream->last_ret;
/* no unexpected or unlinked, return */
if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
goto done;
/* we check to see if we have at least 1 unexpected or all unlinked */
unexpected |= (ret == GST_FLOW_UNEXPECTED);
not_linked &= (ret == GST_FLOW_NOT_LINKED);
}
/* when we get here, we all have unlinked or unexpected */
if (not_linked)
ret = GST_FLOW_NOT_LINKED;
else if (unexpected)
ret = GST_FLOW_UNEXPECTED;
done:
GST_LOG_OBJECT (demux, "combined flow return: %s", gst_flow_get_name (ret));
return ret;
}
/* the input buffer metadata must be writable. Returns NULL when the buffer is
* completely cliped */
static GstBuffer *
gst_qtdemux_clip_buffer (GstQTDemux * qtdemux, QtDemuxStream * stream,
GstBuffer * buf)
{
gint64 start, stop, cstart, cstop, diff;
GstClockTime timestamp = GST_CLOCK_TIME_NONE, duration = GST_CLOCK_TIME_NONE;
guint8 *data;
guint size;
gint num_rate, denom_rate;
gint frame_size;
gboolean clip_data;
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
/* depending on the type, setup the clip parameters */
if (stream->subtype == FOURCC_soun) {
frame_size = stream->bytes_per_frame;
num_rate = GST_SECOND;
denom_rate = (gint) stream->rate;
clip_data = TRUE;
} else if (stream->subtype == FOURCC_vide) {
frame_size = size;
num_rate = stream->fps_n;
denom_rate = stream->fps_d;
clip_data = FALSE;
} else
goto wrong_type;
/* we can only clip if we have a valid timestamp */
timestamp = GST_BUFFER_TIMESTAMP (buf);
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (timestamp)))
goto no_timestamp;
if (G_LIKELY (GST_BUFFER_DURATION_IS_VALID (buf))) {
duration = GST_BUFFER_DURATION (buf);
} else {
duration =
gst_util_uint64_scale_int (size / frame_size, num_rate, denom_rate);
}
start = timestamp;
stop = start + duration;
if (G_UNLIKELY (!gst_segment_clip (&stream->segment, GST_FORMAT_TIME,
start, stop, &cstart, &cstop)))
goto clipped;
/* see if some clipping happened */
diff = cstart - start;
if (diff > 0) {
timestamp = cstart;
duration -= diff;
if (clip_data) {
/* bring clipped time to samples and to bytes */
diff = gst_util_uint64_scale_int (diff, denom_rate, num_rate);
diff *= frame_size;
GST_DEBUG_OBJECT (qtdemux, "clipping start to %" GST_TIME_FORMAT " %"
G_GUINT64_FORMAT " bytes", GST_TIME_ARGS (cstart), diff);
data += diff;
size -= diff;
}
}
diff = stop - cstop;
if (diff > 0) {
duration -= diff;
if (clip_data) {
/* bring clipped time to samples and then to bytes */
diff = gst_util_uint64_scale_int (diff, denom_rate, num_rate);
diff *= frame_size;
GST_DEBUG_OBJECT (qtdemux, "clipping stop to %" GST_TIME_FORMAT " %"
G_GUINT64_FORMAT " bytes", GST_TIME_ARGS (cstop), diff);
size -= diff;
}
}
GST_BUFFER_TIMESTAMP (buf) = timestamp;
GST_BUFFER_DURATION (buf) = duration;
GST_BUFFER_SIZE (buf) = size;
GST_BUFFER_DATA (buf) = data;
return buf;
/* dropped buffer */
wrong_type:
{
GST_DEBUG_OBJECT (qtdemux, "unknown stream type");
return buf;
}
no_timestamp:
{
GST_DEBUG_OBJECT (qtdemux, "no timestamp on buffer");
return buf;
}
clipped:
{
GST_DEBUG_OBJECT (qtdemux, "clipped buffer");
gst_buffer_unref (buf);
return NULL;
}
}
static GstFlowReturn
gst_qtdemux_loop_state_movie (GstQTDemux * qtdemux)
{
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *buf = NULL;
QtDemuxStream *stream;
guint64 min_time;
guint64 offset = 0;
guint64 timestamp = GST_CLOCK_TIME_NONE;
guint64 duration = 0;
gboolean keyframe = FALSE;
guint size = 0;
gint index;
gint i;
gst_qtdemux_push_pending_newsegment (qtdemux);
/* Figure out the next stream sample to output, min_time is expressed in
* global time and runs over the edit list segments. */
min_time = G_MAXUINT64;
index = -1;
for (i = 0; i < qtdemux->n_streams; i++) {
guint64 position;
stream = qtdemux->streams[i];
position = stream->time_position;
/* position of -1 is EOS */
if (position != -1 && position < min_time) {
min_time = position;
index = i;
}
}
/* all are EOS */
if (G_UNLIKELY (index == -1)) {
GST_DEBUG_OBJECT (qtdemux, "all streams are EOS");
goto eos;
}
/* check for segment end */
if (G_UNLIKELY (qtdemux->segment.stop != -1
&& qtdemux->segment.stop < min_time)) {
GST_DEBUG_OBJECT (qtdemux, "we reached the end of our segment.");
goto eos;
}
stream = qtdemux->streams[index];
/* fetch info for the current sample of this stream */
if (G_UNLIKELY (!gst_qtdemux_prepare_current_sample (qtdemux, stream, &offset,
&size, &timestamp, &duration, &keyframe)))
goto eos_stream;
GST_LOG_OBJECT (qtdemux,
"pushing from stream %d, offset %" G_GUINT64_FORMAT
", size %d, timestamp=%" GST_TIME_FORMAT ", duration %" GST_TIME_FORMAT,
index, offset, size, GST_TIME_ARGS (timestamp), GST_TIME_ARGS (duration));
/* hmm, empty sample, skip and move to next sample */
if (G_UNLIKELY (size <= 0))
goto next;
/* last pushed sample was out of boundary, goto next sample */
if (G_UNLIKELY (stream->last_ret == GST_FLOW_UNEXPECTED))
goto next;
GST_LOG_OBJECT (qtdemux, "reading %d bytes @ %" G_GUINT64_FORMAT, size,
offset);
ret = gst_qtdemux_pull_atom (qtdemux, offset, size, &buf);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto beach;
if (G_UNLIKELY (stream->fourcc == FOURCC_rtsp)) {
GstMessage *m;
gchar *url;
url = g_strndup ((gchar *) GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
/* we have RTSP redirect now */
m = gst_message_new_element (GST_OBJECT_CAST (qtdemux),
gst_structure_new ("redirect",
"new-location", G_TYPE_STRING, url, NULL));
g_free (url);
gst_element_post_message (GST_ELEMENT_CAST (qtdemux), m);
}
qtdemux->last_ts = min_time;
if (qtdemux->segment.rate >= 0) {
gst_segment_set_last_stop (&qtdemux->segment, GST_FORMAT_TIME, min_time);
gst_qtdemux_sync_streams (qtdemux);
}
if (G_LIKELY (stream->pad)) {
/* we're going to modify the metadata */
buf = gst_buffer_make_metadata_writable (buf);
GST_BUFFER_TIMESTAMP (buf) = timestamp;
GST_BUFFER_DURATION (buf) = duration;
GST_BUFFER_OFFSET (buf) = -1;
GST_BUFFER_OFFSET_END (buf) = -1;
if (stream->need_clip)
buf = gst_qtdemux_clip_buffer (qtdemux, stream, buf);
if (buf == NULL)
goto next;
if (stream->discont) {
GST_LOG_OBJECT (qtdemux, "marking discont buffer");
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
stream->discont = FALSE;
}
if (!keyframe)
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
gst_buffer_set_caps (buf, stream->caps);
GST_LOG_OBJECT (qtdemux,
"Pushing buffer with time %" GST_TIME_FORMAT ", duration %"
GST_TIME_FORMAT " on pad %s",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_PAD_NAME (stream->pad));
ret = gst_pad_push (stream->pad, buf);
} else {
GST_DEBUG_OBJECT (qtdemux, "No output pad for stream, ignoring");
gst_buffer_unref (buf);
ret = GST_FLOW_OK;
}
/* combine flows */
ret = gst_qtdemux_combine_flows (qtdemux, stream, ret);
/* ignore unlinked, we will not push on the pad anymore and we will EOS when
* we have no more data for the pad to push */
if (ret == GST_FLOW_UNEXPECTED)
ret = GST_FLOW_OK;
next:
gst_qtdemux_advance_sample (qtdemux, stream);
beach:
return ret;
/* special cases */
eos:
{
GST_DEBUG_OBJECT (qtdemux, "No samples left for any streams - EOS");
ret = GST_FLOW_UNEXPECTED;
goto beach;
}
eos_stream:
{
GST_DEBUG_OBJECT (qtdemux, "No samples left for stream");
/* EOS will be raised if all are EOS */
ret = GST_FLOW_OK;
goto beach;
}
}
static void
gst_qtdemux_loop (GstPad * pad)
{
GstQTDemux *qtdemux;
guint64 cur_offset;
GstFlowReturn ret;
qtdemux = GST_QTDEMUX (gst_pad_get_parent (pad));
cur_offset = qtdemux->offset;
GST_LOG_OBJECT (qtdemux, "loop at position %" G_GUINT64_FORMAT ", state %d",
cur_offset, qtdemux->state);
switch (qtdemux->state) {
case QTDEMUX_STATE_INITIAL:
case QTDEMUX_STATE_HEADER:
ret = gst_qtdemux_loop_state_header (qtdemux);
break;
case QTDEMUX_STATE_MOVIE:
ret = gst_qtdemux_loop_state_movie (qtdemux);
if (qtdemux->segment.rate < 0 && ret == GST_FLOW_UNEXPECTED) {
ret = gst_qtdemux_seek_to_previous_keyframe (qtdemux);
}
break;
default:
/* ouch */
goto invalid_state;
}
/* if something went wrong, pause */
if (ret != GST_FLOW_OK)
goto pause;
done:
gst_object_unref (qtdemux);
return;
/* ERRORS */
invalid_state:
{
GST_ELEMENT_ERROR (qtdemux, STREAM, FAILED,
(NULL), ("streaming stopped, invalid state"));
qtdemux->segment_running = FALSE;
gst_pad_pause_task (pad);
gst_qtdemux_push_event (qtdemux, gst_event_new_eos ());
goto done;
}
pause:
{
const gchar *reason = gst_flow_get_name (ret);
GST_LOG_OBJECT (qtdemux, "pausing task, reason %s", reason);
qtdemux->segment_running = FALSE;
gst_pad_pause_task (pad);
/* fatal errors need special actions */
if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
/* check EOS */
if (ret == GST_FLOW_UNEXPECTED) {
if (qtdemux->n_streams == 0) {
/* we have no streams, post an error */
GST_ELEMENT_ERROR (qtdemux, STREAM, DECODE,
(_("This file contains no playable streams.")),
("no known streams found"));
}
if (qtdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
gint64 stop;
/* FIXME: I am not sure this is the right fix. If the sinks are
* supposed to detect the segment is complete and accumulate
* automatically, it does not seem to work here. Need more work */
qtdemux->segment_running = TRUE;
if ((stop = qtdemux->segment.stop) == -1)
stop = qtdemux->segment.duration;
if (qtdemux->segment.rate >= 0) {
GST_LOG_OBJECT (qtdemux, "Sending segment done, at end of segment");
gst_element_post_message (GST_ELEMENT_CAST (qtdemux),
gst_message_new_segment_done (GST_OBJECT_CAST (qtdemux),
GST_FORMAT_TIME, stop));
} else {
/* For Reverse Playback */
GST_LOG_OBJECT (qtdemux,
"Sending segment done, at start of segment");
gst_element_post_message (GST_ELEMENT_CAST (qtdemux),
gst_message_new_segment_done (GST_OBJECT_CAST (qtdemux),
GST_FORMAT_TIME, qtdemux->segment.start));
}
} else {
GST_LOG_OBJECT (qtdemux, "Sending EOS at end of segment");
gst_qtdemux_push_event (qtdemux, gst_event_new_eos ());
}
} else {
GST_ELEMENT_ERROR (qtdemux, STREAM, FAILED,
(NULL), ("streaming stopped, reason %s", reason));
gst_qtdemux_push_event (qtdemux, gst_event_new_eos ());
}
}
goto done;
}
}
/*
* next_entry_size
*
* Returns the size of the first entry at the current offset.
* If -1, there are none (which means EOS or empty file).
*/
static guint64
next_entry_size (GstQTDemux * demux)
{
QtDemuxStream *stream;
int i;
int smallidx = -1;
guint64 smalloffs = (guint64) - 1;
QtDemuxSample *sample;
GST_LOG_OBJECT (demux, "Finding entry at offset %" G_GUINT64_FORMAT,
demux->offset);
for (i = 0; i < demux->n_streams; i++) {
stream = demux->streams[i];
if (stream->sample_index == -1)
stream->sample_index = 0;
if (stream->sample_index >= stream->n_samples) {
GST_LOG_OBJECT (demux, "stream %d samples exhausted", i);
continue;
}
sample = &stream->samples[stream->sample_index];
GST_LOG_OBJECT (demux,
"Checking Stream %d (sample_index:%d / offset:%" G_GUINT64_FORMAT
" / size:%" G_GUINT32_FORMAT ")", i, stream->sample_index,
sample->offset, sample->size);
if (((smalloffs == -1)
|| (sample->offset < smalloffs)) && (sample->size)) {
smallidx = i;
smalloffs = sample->offset;
}
}
GST_LOG_OBJECT (demux,
"stream %d offset %" G_GUINT64_FORMAT " demux->offset :%"
G_GUINT64_FORMAT, smallidx, smalloffs, demux->offset);
if (smallidx == -1)
return -1;
stream = demux->streams[smallidx];
sample = &stream->samples[stream->sample_index];
if (sample->offset >= demux->offset) {
demux->todrop = sample->offset - demux->offset;
return sample->size + demux->todrop;
}
GST_DEBUG_OBJECT (demux,
"There wasn't any entry at offset %" G_GUINT64_FORMAT, demux->offset);
return -1;
}
static void
gst_qtdemux_post_progress (GstQTDemux * demux, gint num, gint denom)
{
gint perc = (gint) ((gdouble) num * 100.0 / (gdouble) denom);
gst_element_post_message (GST_ELEMENT_CAST (demux),
gst_message_new_element (GST_OBJECT_CAST (demux),
gst_structure_new ("progress", "percent", G_TYPE_INT, perc, NULL)));
}
/* FIXME, unverified after edit list updates */
static GstFlowReturn
gst_qtdemux_chain (GstPad * sinkpad, GstBuffer * inbuf)
{
GstQTDemux *demux;
GstFlowReturn ret = GST_FLOW_OK;
demux = GST_QTDEMUX (gst_pad_get_parent (sinkpad));
gst_adapter_push (demux->adapter, inbuf);
/* we never really mean to buffer that much */
if (demux->neededbytes == -1)
goto eos;
GST_DEBUG_OBJECT (demux, "pushing in inbuf %p, neededbytes:%u, available:%u",
inbuf, demux->neededbytes, gst_adapter_available (demux->adapter));
while (((gst_adapter_available (demux->adapter)) >= demux->neededbytes) &&
(ret == GST_FLOW_OK)) {
GST_DEBUG_OBJECT (demux,
"state:%d , demux->neededbytes:%d, demux->offset:%" G_GUINT64_FORMAT,
demux->state, demux->neededbytes, demux->offset);
switch (demux->state) {
case QTDEMUX_STATE_INITIAL:{
const guint8 *data;
guint32 fourcc;
guint64 size;
data = gst_adapter_peek (demux->adapter, demux->neededbytes);
/* get fourcc/length, set neededbytes */
extract_initial_length_and_fourcc ((guint8 *) data, &size, &fourcc);
GST_DEBUG_OBJECT (demux, "Peeking found [%" GST_FOURCC_FORMAT "] "
"size: %" G_GUINT64_FORMAT, GST_FOURCC_ARGS (fourcc), size);
if (size == 0) {
GST_ELEMENT_ERROR (demux, STREAM, DECODE,
(_("This file is invalid and cannot be played.")),
("initial atom '%" GST_FOURCC_FORMAT "' has empty length",
GST_FOURCC_ARGS (fourcc)));
ret = GST_FLOW_ERROR;
break;
}
if (fourcc == FOURCC_mdat) {
if (demux->n_streams > 0) {
demux->state = QTDEMUX_STATE_MOVIE;
demux->neededbytes = next_entry_size (demux);
} else {
guint bs;
buffer_data:
/* there may be multiple mdat (or alike) buffers */
/* sanity check */
if (demux->mdatbuffer)
bs = GST_BUFFER_SIZE (demux->mdatbuffer);
else
bs = 0;
if (size + bs > 10 * (1 << 20))
goto no_moov;
demux->state = QTDEMUX_STATE_BUFFER_MDAT;
demux->neededbytes = size;
if (!demux->mdatbuffer)
demux->mdatoffset = demux->offset;
}
} else if (G_UNLIKELY (size > QTDEMUX_MAX_ATOM_SIZE)) {
GST_ELEMENT_ERROR (demux, STREAM, DECODE,
(_("This file is invalid and cannot be played.")),
("atom %" GST_FOURCC_FORMAT " has bogus size %" G_GUINT64_FORMAT,
GST_FOURCC_ARGS (fourcc), size));
ret = GST_FLOW_ERROR;
break;
} else {
/* this means we already started buffering and still no moov header,
* let's continue buffering everything till we get moov */
if (demux->mdatbuffer && (fourcc != FOURCC_moov))
goto buffer_data;
demux->neededbytes = size;
demux->state = QTDEMUX_STATE_HEADER;
}
break;
}
case QTDEMUX_STATE_HEADER:{
const guint8 *data;
guint32 fourcc;
GST_DEBUG_OBJECT (demux, "In header");
data = gst_adapter_peek (demux->adapter, demux->neededbytes);
/* parse the header */
extract_initial_length_and_fourcc (data, NULL, &fourcc);
if (fourcc == FOURCC_moov) {
GST_DEBUG_OBJECT (demux, "Parsing [moov]");
qtdemux_parse_moov (demux, data, demux->neededbytes);
qtdemux_node_dump (demux, demux->moov_node);
qtdemux_parse_tree (demux);
g_node_destroy (demux->moov_node);
demux->moov_node = NULL;
GST_DEBUG_OBJECT (demux, "Finished parsing the header");
} else if (fourcc == FOURCC_ftyp) {
GST_DEBUG_OBJECT (demux, "Parsing [ftyp]");
qtdemux_parse_ftyp (demux, data, demux->neededbytes);
} else {
GST_WARNING_OBJECT (demux,
"Unknown fourcc while parsing header : %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
/* Let's jump that one and go back to initial state */
}
if (demux->mdatbuffer && demux->n_streams) {
GstBuffer *buf;
/* the mdat was before the header */
GST_DEBUG_OBJECT (demux, "We have n_streams:%d and mdatbuffer:%p",
demux->n_streams, demux->mdatbuffer);
/* restore our adapter/offset view of things with upstream;
* put preceding buffered data ahead of current moov data.
* This should also handle evil mdat, moov, mdat cases and alike */
buf = gst_adapter_take_buffer (demux->adapter,
gst_adapter_available (demux->adapter));
gst_adapter_clear (demux->adapter);
gst_adapter_push (demux->adapter, demux->mdatbuffer);
gst_adapter_push (demux->adapter, buf);
demux->mdatbuffer = NULL;
demux->offset = demux->mdatoffset;
demux->neededbytes = next_entry_size (demux);
demux->state = QTDEMUX_STATE_MOVIE;
} else {
GST_DEBUG_OBJECT (demux, "Carrying on normally");
gst_adapter_flush (demux->adapter, demux->neededbytes);
demux->offset += demux->neededbytes;
demux->neededbytes = 16;
demux->state = QTDEMUX_STATE_INITIAL;
}
break;
}
case QTDEMUX_STATE_BUFFER_MDAT:{
GstBuffer *buf;
GST_DEBUG_OBJECT (demux, "Got our buffer at offset %" G_GUINT64_FORMAT,
demux->offset);
buf = gst_adapter_take_buffer (demux->adapter, demux->neededbytes);
GST_DEBUG_OBJECT (demux, "mdatbuffer starts with %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (QT_FOURCC (GST_BUFFER_DATA (buf) + 4)));
if (demux->mdatbuffer)
demux->mdatbuffer = gst_buffer_join (demux->mdatbuffer, buf);
else
demux->mdatbuffer = buf;
demux->offset += demux->neededbytes;
demux->neededbytes = 16;
demux->state = QTDEMUX_STATE_INITIAL;
gst_qtdemux_post_progress (demux, 1, 1);
break;
}
case QTDEMUX_STATE_MOVIE:{
GstBuffer *outbuf;
QtDemuxStream *stream = NULL;
int i = -1;
GST_DEBUG_OBJECT (demux,
"BEGIN // in MOVIE for offset %" G_GUINT64_FORMAT, demux->offset);
if (demux->todrop) {
GST_LOG_OBJECT (demux, "Dropping %d bytes", demux->todrop);
gst_adapter_flush (demux->adapter, demux->todrop);
demux->neededbytes -= demux->todrop;
demux->offset += demux->todrop;
}
/* first buffer? */
/* initial newsegment sent here after having added pads,
* possible others in sink_event */
if (G_UNLIKELY (demux->last_ts == GST_CLOCK_TIME_NONE)) {
gst_qtdemux_push_event (demux,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
0, GST_CLOCK_TIME_NONE, 0));
/* clear to send tags on all streams */
for (i = 0; i < demux->n_streams; i++) {
gst_qtdemux_push_tags (demux, demux->streams[i]);
}
}
/* Figure out which stream this is packet belongs to */
for (i = 0; i < demux->n_streams; i++) {
stream = demux->streams[i];
if (stream->sample_index >= stream->n_samples)
continue;
GST_LOG_OBJECT (demux,
"Checking stream %d (sample_index:%d / offset:%" G_GUINT64_FORMAT
" / size:%d)", i, stream->sample_index,
stream->samples[stream->sample_index].offset,
stream->samples[stream->sample_index].size);
if (stream->samples[stream->sample_index].offset == demux->offset)
break;
}
if (G_UNLIKELY (stream == NULL || i == demux->n_streams))
goto unknown_stream;
/* Put data in a buffer, set timestamps, caps, ... */
outbuf = gst_adapter_take_buffer (demux->adapter, demux->neededbytes);
GST_DEBUG_OBJECT (demux, "stream : %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (stream->fourcc));
g_return_val_if_fail (outbuf != NULL, GST_FLOW_ERROR);
if (stream->samples[stream->sample_index].pts_offset) {
demux->last_ts = stream->samples[stream->sample_index].timestamp;
GST_BUFFER_TIMESTAMP (outbuf) = demux->last_ts +
stream->samples[stream->sample_index].pts_offset;
} else {
GST_BUFFER_TIMESTAMP (outbuf) =
stream->samples[stream->sample_index].timestamp;
demux->last_ts = GST_BUFFER_TIMESTAMP (outbuf);
}
GST_BUFFER_DURATION (outbuf) =
stream->samples[stream->sample_index].duration;
if (!stream->all_keyframe &&
!stream->samples[stream->sample_index].keyframe)
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
/* position reporting */
gst_segment_set_last_stop (&demux->segment, GST_FORMAT_TIME,
demux->last_ts);
gst_qtdemux_sync_streams (demux);
/* send buffer */
if (stream->pad) {
GST_LOG_OBJECT (demux,
"Pushing buffer with time %" GST_TIME_FORMAT " on pad %p",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)), stream->pad);
gst_buffer_set_caps (outbuf, stream->caps);
ret = gst_pad_push (stream->pad, outbuf);
} else {
gst_buffer_unref (outbuf);
ret = GST_FLOW_OK;
}
/* combine flows */
ret = gst_qtdemux_combine_flows (demux, stream, ret);
stream->sample_index++;
/* update current offset and figure out size of next buffer */
GST_LOG_OBJECT (demux, "increasing offset %" G_GUINT64_FORMAT " by %u",
demux->offset, demux->neededbytes);
demux->offset += demux->neededbytes;
GST_LOG_OBJECT (demux, "offset is now %" G_GUINT64_FORMAT,
demux->offset);
if ((demux->neededbytes = next_entry_size (demux)) == -1)
goto eos;
break;
}
default:
goto invalid_state;
}
}
/* when buffering movie data, at least show user something is happening */
if (ret == GST_FLOW_OK && demux->state == QTDEMUX_STATE_BUFFER_MDAT &&
gst_adapter_available (demux->adapter) <= demux->neededbytes) {
gst_qtdemux_post_progress (demux, gst_adapter_available (demux->adapter),
demux->neededbytes);
}
done:
gst_object_unref (demux);
return ret;
/* ERRORS */
unknown_stream:
{
GST_ELEMENT_ERROR (demux, STREAM, FAILED, (NULL), ("unknown stream found"));
ret = GST_FLOW_ERROR;
goto done;
}
eos:
{
GST_DEBUG_OBJECT (demux, "no next entry, EOS");
ret = GST_FLOW_UNEXPECTED;
goto done;
}
invalid_state:
{
GST_ELEMENT_ERROR (demux, STREAM, FAILED,
(NULL), ("qtdemuxer invalid state %d", demux->state));
ret = GST_FLOW_ERROR;
goto done;
}
no_moov:
{
GST_ELEMENT_ERROR (demux, STREAM, FAILED,
(NULL), ("no 'moov' atom withing first 10 MB"));
ret = GST_FLOW_ERROR;
goto done;
}
}
static gboolean
qtdemux_sink_activate (GstPad * sinkpad)
{
if (gst_pad_check_pull_range (sinkpad))
return gst_pad_activate_pull (sinkpad, TRUE);
else
return gst_pad_activate_push (sinkpad, TRUE);
}
static gboolean
qtdemux_sink_activate_pull (GstPad * sinkpad, gboolean active)
{
GstQTDemux *demux = GST_QTDEMUX (GST_PAD_PARENT (sinkpad));
if (active) {
demux->pullbased = TRUE;
demux->segment_running = TRUE;
return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_qtdemux_loop,
sinkpad);
} else {
demux->segment_running = FALSE;
return gst_pad_stop_task (sinkpad);
}
}
static gboolean
qtdemux_sink_activate_push (GstPad * sinkpad, gboolean active)
{
GstQTDemux *demux = GST_QTDEMUX (GST_PAD_PARENT (sinkpad));
demux->pullbased = FALSE;
return TRUE;
}
#ifdef HAVE_ZLIB
static void *
qtdemux_zalloc (void *opaque, unsigned int items, unsigned int size)
{
return g_malloc (items * size);
}
static void
qtdemux_zfree (void *opaque, void *addr)
{
g_free (addr);
}
static void *
qtdemux_inflate (void *z_buffer, guint z_length, guint length)
{
guint8 *buffer;
z_stream *z;
int ret;
z = g_new0 (z_stream, 1);
z->zalloc = qtdemux_zalloc;
z->zfree = qtdemux_zfree;
z->opaque = NULL;
z->next_in = z_buffer;
z->avail_in = z_length;
buffer = (guint8 *) g_malloc (length);
ret = inflateInit (z);
while (z->avail_in > 0) {
if (z->avail_out == 0) {
length += 1024;
buffer = (guint8 *) g_realloc (buffer, length);
z->next_out = buffer + z->total_out;
z->avail_out = 1024;
}
ret = inflate (z, Z_SYNC_FLUSH);
if (ret != Z_OK)
break;
}
if (ret != Z_STREAM_END) {
g_warning ("inflate() returned %d", ret);
}
g_free (z);
return buffer;
}
#endif /* HAVE_ZLIB */
static gboolean
qtdemux_parse_moov (GstQTDemux * qtdemux, const guint8 * buffer, guint length)
{
GNode *cmov;
qtdemux->moov_node = g_node_new ((guint8 *) buffer);
GST_DEBUG_OBJECT (qtdemux, "parsing 'moov' atom");
qtdemux_parse_node (qtdemux, qtdemux->moov_node, buffer, length);
cmov = qtdemux_tree_get_child_by_type (qtdemux->moov_node, FOURCC_cmov);
if (cmov) {
guint32 method;
GNode *dcom;
GNode *cmvd;
dcom = qtdemux_tree_get_child_by_type (cmov, FOURCC_dcom);
cmvd = qtdemux_tree_get_child_by_type (cmov, FOURCC_cmvd);
if (dcom == NULL || cmvd == NULL)
goto invalid_compression;
method = QT_FOURCC ((guint8 *) dcom->data + 8);
switch (method) {
#ifdef HAVE_ZLIB
case GST_MAKE_FOURCC ('z', 'l', 'i', 'b'):{
guint uncompressed_length;
guint compressed_length;
guint8 *buf;
uncompressed_length = QT_UINT32 ((guint8 *) cmvd->data + 8);
compressed_length = QT_UINT32 ((guint8 *) cmvd->data + 4) - 12;
GST_LOG ("length = %u", uncompressed_length);
buf =
(guint8 *) qtdemux_inflate ((guint8 *) cmvd->data + 12,
compressed_length, uncompressed_length);
qtdemux->moov_node_compressed = qtdemux->moov_node;
qtdemux->moov_node = g_node_new (buf);
qtdemux_parse_node (qtdemux, qtdemux->moov_node, buf,
uncompressed_length);
break;
}
#endif /* HAVE_ZLIB */
default:
GST_WARNING_OBJECT (qtdemux, "unknown or unhandled header compression "
"type %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (method));
break;
}
}
return TRUE;
/* ERRORS */
invalid_compression:
{
GST_ERROR_OBJECT (qtdemux, "invalid compressed header");
return FALSE;
}
}
static gboolean
qtdemux_parse_container (GstQTDemux * qtdemux, GNode * node, const guint8 * buf,
const guint8 * end)
{
while (G_UNLIKELY (buf < end)) {
GNode *child;
guint32 len;
if (G_UNLIKELY (buf + 4 > end)) {
GST_LOG_OBJECT (qtdemux, "buffer overrun");
break;
}
len = QT_UINT32 (buf);
if (G_UNLIKELY (len == 0)) {
GST_LOG_OBJECT (qtdemux, "empty container");
break;
}
if (G_UNLIKELY (len < 8)) {
GST_WARNING_OBJECT (qtdemux, "length too short (%d < 8)", len);
break;
}
if (G_UNLIKELY (len > (end - buf))) {
GST_WARNING_OBJECT (qtdemux, "length too long (%d > %d)", len,
(gint) (end - buf));
break;
}
child = g_node_new ((guint8 *) buf);
g_node_append (node, child);
qtdemux_parse_node (qtdemux, child, buf, len);
buf += len;
}
return TRUE;
}
static gboolean
qtdemux_parse_theora_extension (GstQTDemux * qtdemux, QtDemuxStream * stream,
GNode * xdxt)
{
int len = QT_UINT32 (xdxt->data);
guint8 *buf = xdxt->data;
guint8 *end = buf + len;
GstBuffer *buffer;
/* skip size and type */
buf += 8;
end -= 8;
while (buf < end) {
gint size;
guint32 type;
size = QT_UINT32 (buf);
type = QT_FOURCC (buf + 4);
GST_LOG_OBJECT (qtdemux, "%p %p", buf, end);
if (buf + size > end || size <= 0)
break;
buf += 8;
size -= 8;
GST_WARNING_OBJECT (qtdemux, "have cookie %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (type));
switch (type) {
case FOURCC_tCtH:
buffer = gst_buffer_new_and_alloc (size);
memcpy (GST_BUFFER_DATA (buffer), buf, size);
stream->buffers = g_slist_append (stream->buffers, buffer);
GST_LOG_OBJECT (qtdemux, "parsing theora header");
break;
case FOURCC_tCt_:
buffer = gst_buffer_new_and_alloc (size);
memcpy (GST_BUFFER_DATA (buffer), buf, size);
stream->buffers = g_slist_append (stream->buffers, buffer);
GST_LOG_OBJECT (qtdemux, "parsing theora comment");
break;
case FOURCC_tCtC:
buffer = gst_buffer_new_and_alloc (size);
memcpy (GST_BUFFER_DATA (buffer), buf, size);
stream->buffers = g_slist_append (stream->buffers, buffer);
GST_LOG_OBJECT (qtdemux, "parsing theora codebook");
break;
default:
GST_WARNING_OBJECT (qtdemux,
"unknown theora cookie %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (type));
break;
}
buf += size;
}
return TRUE;
}
static gboolean
qtdemux_parse_node (GstQTDemux * qtdemux, GNode * node, const guint8 * buffer,
guint length)
{
guint32 fourcc = 0;
guint32 node_length = 0;
const QtNodeType *type;
const guint8 *end;
GST_LOG_OBJECT (qtdemux, "qtdemux_parse buffer %p length %u", buffer, length);
if (G_UNLIKELY (length < 8))
goto not_enough_data;
node_length = QT_UINT32 (buffer);
fourcc = QT_FOURCC (buffer + 4);
/* ignore empty nodes */
if (G_UNLIKELY (fourcc == 0 || node_length == 8))
return TRUE;
type = qtdemux_type_get (fourcc);
end = buffer + length;
GST_LOG_OBJECT (qtdemux,
"parsing '%" GST_FOURCC_FORMAT "', length=%u, name '%s'",
GST_FOURCC_ARGS (fourcc), node_length, type->name);
if (node_length > length)
goto broken_atom_size;
if (type->flags & QT_FLAG_CONTAINER) {
qtdemux_parse_container (qtdemux, node, buffer + 8, end);
} else {
switch (fourcc) {
case FOURCC_stsd:
{
if (node_length < 20) {
GST_LOG_OBJECT (qtdemux, "skipping small stsd box");
break;
}
GST_DEBUG_OBJECT (qtdemux,
"parsing stsd (sample table, sample description) atom");
qtdemux_parse_container (qtdemux, node, buffer + 16, end);
break;
}
case FOURCC_mp4a:
{
guint32 version;
guint32 offset;
if (length < 20) {
/* small boxes are also inside wave inside the mp4a box */
GST_LOG_OBJECT (qtdemux, "skipping small mp4a box");
break;
}
version = QT_UINT32 (buffer + 16);
GST_DEBUG_OBJECT (qtdemux, "mp4a version 0x%08x", version);
/* parse any esds descriptors */
switch (version) {
case 0x00000000:
offset = 0x24;
break;
case 0x00010000:
offset = 0x34;
break;
case 0x00020000:
offset = 0x58;
break;
default:
GST_WARNING_OBJECT (qtdemux, "unhandled mp4a version 0x%08x",
version);
offset = 0;
break;
}
if (offset)
qtdemux_parse_container (qtdemux, node, buffer + offset, end);
break;
}
case FOURCC_mp4v:
{
const guint8 *buf;
guint32 version;
int tlen;
GST_DEBUG_OBJECT (qtdemux, "parsing in mp4v");
version = QT_UINT32 (buffer + 16);
GST_DEBUG_OBJECT (qtdemux, "version %08x", version);
if (1 || version == 0x00000000) {
buf = buffer + 0x32;
/* FIXME Quicktime uses PASCAL string while
* the iso format uses C strings. Check the file
* type before attempting to parse the string here. */
tlen = QT_UINT8 (buf);
GST_DEBUG_OBJECT (qtdemux, "tlen = %d", tlen);
buf++;
GST_DEBUG_OBJECT (qtdemux, "string = %.*s", tlen, (char *) buf);
/* the string has a reserved space of 32 bytes so skip
* the remaining 31 */
buf += 31;
buf += 4; /* and 4 bytes reserved */
GST_MEMDUMP_OBJECT (qtdemux, "mp4v", buf, end - buf);
qtdemux_parse_container (qtdemux, node, buf, end);
}
break;
}
case FOURCC_avc1:
{
GST_MEMDUMP_OBJECT (qtdemux, "avc1", buffer, end - buffer);
qtdemux_parse_container (qtdemux, node, buffer + 0x56, end);
break;
}
case FOURCC_mjp2:
{
qtdemux_parse_container (qtdemux, node, buffer + 86, end);
break;
}
case FOURCC_meta:
{
GST_DEBUG_OBJECT (qtdemux, "parsing meta atom");
qtdemux_parse_container (qtdemux, node, buffer + 12, end);
break;
}
case FOURCC_XiTh:
{
guint32 version;
guint32 offset;
version = QT_UINT32 (buffer + 12);
GST_DEBUG_OBJECT (qtdemux, "parsing XiTh atom version 0x%08x", version);
switch (version) {
case 0x00000001:
offset = 0x62;
break;
default:
GST_DEBUG_OBJECT (qtdemux, "unknown version 0x%08x", version);
offset = 0;
break;
}
if (offset)
qtdemux_parse_container (qtdemux, node, buffer + offset, end);
break;
}
case FOURCC_in24:
{
qtdemux_parse_container (qtdemux, node, buffer + 0x34, end);
break;
}
default:
if (!strcmp (type->name, "unknown"))
GST_MEMDUMP ("Unknown tag", buffer + 4, end - buffer - 4);
break;
}
}
GST_LOG_OBJECT (qtdemux, "parsed '%" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
return TRUE;
/* ERRORS */
not_enough_data:
{
GST_ELEMENT_ERROR (qtdemux, STREAM, DEMUX,
(_("This file is corrupt and cannot be played.")),
("Not enough data for an atom header, got only %u bytes", length));
return FALSE;
}
broken_atom_size:
{
GST_ELEMENT_ERROR (qtdemux, STREAM, DEMUX,
(_("This file is corrupt and cannot be played.")),
("Atom '%" GST_FOURCC_FORMAT "' has size of %u bytes, but we have only "
"%u bytes available.", GST_FOURCC_ARGS (fourcc), node_length,
length));
return FALSE;
}
}
static GNode *
qtdemux_tree_get_child_by_type (GNode * node, guint32 fourcc)
{
GNode *child;
guint8 *buffer;
guint32 child_fourcc;
for (child = g_node_first_child (node); child;
child = g_node_next_sibling (child)) {
buffer = (guint8 *) child->data;
child_fourcc = QT_FOURCC (buffer + 4);
if (G_UNLIKELY (child_fourcc == fourcc)) {
return child;
}
}
return NULL;
}
static GNode *
qtdemux_tree_get_child_by_type_full (GNode * node, guint32 fourcc,
QtAtomParser * parser)
{
GNode *child;
guint8 *buffer;
guint32 child_fourcc, child_len;
for (child = g_node_first_child (node); child;
child = g_node_next_sibling (child)) {
buffer = (guint8 *) child->data;
child_len = QT_UINT32 (buffer);
child_fourcc = QT_FOURCC (buffer + 4);
if (G_UNLIKELY (child_fourcc == fourcc)) {
if (G_UNLIKELY (child_len < (4 + 4)))
return NULL;
/* FIXME: must verify if atom length < parent atom length */
qt_atom_parser_init (parser, buffer + (4 + 4), child_len - (4 + 4));
return child;
}
}
return NULL;
}
static GNode *
qtdemux_tree_get_sibling_by_type (GNode * node, guint32 fourcc)
{
GNode *child;
guint8 *buffer;
guint32 child_fourcc;
for (child = g_node_next_sibling (node); child;
child = g_node_next_sibling (child)) {
buffer = (guint8 *) child->data;
child_fourcc = QT_FOURCC (buffer + 4);
if (child_fourcc == fourcc) {
return child;
}
}
return NULL;
}
static gboolean
gst_qtdemux_add_stream (GstQTDemux * qtdemux,
QtDemuxStream * stream, GstTagList * list)
{
if (qtdemux->n_streams >= GST_QTDEMUX_MAX_STREAMS)
goto too_many_streams;
if (stream->subtype == FOURCC_vide) {
gchar *name = g_strdup_printf ("video_%02d", qtdemux->n_video_streams);
stream->pad =
gst_pad_new_from_static_template (&gst_qtdemux_videosrc_template, name);
g_free (name);
/* fps is calculated base on the duration of the first frames since
* qt does not have a fixed framerate. */
if ((stream->n_samples == 1) && (stream->min_duration == 0)) {
/* still frame */
stream->fps_n = 0;
stream->fps_d = 1;
} else {
stream->fps_n = stream->timescale;
if (stream->min_duration == 0)
stream->fps_d = 1;
else
stream->fps_d = stream->min_duration;
}
if (stream->caps) {
gboolean gray;
gint depth, palette_count;
const guint32 *palette_data = NULL;
gst_caps_set_simple (stream->caps,
"width", G_TYPE_INT, stream->width,
"height", G_TYPE_INT, stream->height,
"framerate", GST_TYPE_FRACTION, stream->fps_n, stream->fps_d, NULL);
/* iso files:
* calculate pixel-aspect-ratio using display width and height */
if (qtdemux->major_brand != FOURCC_qt__) {
GST_DEBUG_OBJECT (qtdemux,
"video size %dx%d, target display size %dx%d", stream->width,
stream->height, stream->display_width, stream->display_height);
if (stream->display_width > 0 && stream->display_height > 0 &&
stream->width > 0 && stream->height > 0) {
gint n, d;
/* calculate the pixel aspect ratio using the display and pixel w/h */
n = stream->display_width * stream->height;
d = stream->display_height * stream->width;
if (n != d) {
GST_DEBUG_OBJECT (qtdemux, "setting PAR to %d/%d", n, d);
gst_caps_set_simple (stream->caps, "pixel-aspect-ratio",
GST_TYPE_FRACTION, n, d, NULL);
}
}
}
/* qt file might have pasp atom */
if (stream->par_w > 0 && stream->par_h > 0) {
GST_DEBUG_OBJECT (qtdemux, "par %d:%d", stream->par_w, stream->par_h);
gst_caps_set_simple (stream->caps, "pixel-aspect-ratio",
GST_TYPE_FRACTION, stream->par_w, stream->par_h, NULL);
}
depth = stream->bits_per_sample;
/* more than 32 bits means grayscale */
gray = (depth > 32);
/* low 32 bits specify the depth */
depth &= 0x1F;
/* different number of palette entries is determined by depth. */
palette_count = 0;
if ((depth == 1) || (depth == 2) || (depth == 4) || (depth == 8))
palette_count = (1 << depth);
switch (palette_count) {
case 0:
break;
case 2:
palette_data = ff_qt_default_palette_2;
break;
case 4:
palette_data = ff_qt_default_palette_4;
break;
case 16:
if (gray)
palette_data = ff_qt_grayscale_palette_16;
else
palette_data = ff_qt_default_palette_16;
break;
case 256:
if (gray)
palette_data = ff_qt_grayscale_palette_256;
else
palette_data = ff_qt_default_palette_256;
break;
default:
GST_ELEMENT_WARNING (qtdemux, STREAM, DECODE,
(_("The video in this file might not play correctly.")),
("unsupported palette depth %d", depth));
break;
}
if (palette_data) {
GstBuffer *palette;
/* make sure it's not writable. We leave MALLOCDATA to NULL so that we
* don't free any of the buffer data. */
palette = gst_buffer_new ();
GST_BUFFER_FLAG_SET (palette, GST_BUFFER_FLAG_READONLY);
GST_BUFFER_DATA (palette) = (guint8 *) palette_data;
GST_BUFFER_SIZE (palette) = sizeof (guint32) * palette_count;
gst_caps_set_simple (stream->caps, "palette_data",
GST_TYPE_BUFFER, palette, NULL);
gst_buffer_unref (palette);
} else if (palette_count != 0) {
GST_ELEMENT_WARNING (qtdemux, STREAM, NOT_IMPLEMENTED,
(NULL), ("Unsupported palette depth %d. Ignoring stream.", depth));
gst_object_unref (stream->pad);
stream->pad = NULL;
}
}
qtdemux->n_video_streams++;
} else if (stream->subtype == FOURCC_soun) {
gchar *name = g_strdup_printf ("audio_%02d", qtdemux->n_audio_streams);
stream->pad =
gst_pad_new_from_static_template (&gst_qtdemux_audiosrc_template, name);
g_free (name);
if (stream->caps) {
gst_caps_set_simple (stream->caps,
"rate", G_TYPE_INT, (int) stream->rate,
"channels", G_TYPE_INT, stream->n_channels, NULL);
}
qtdemux->n_audio_streams++;
} else if (stream->subtype == FOURCC_strm) {
GST_DEBUG_OBJECT (qtdemux, "stream type, not creating pad");
} else if (stream->subtype == FOURCC_subp) {
gchar *name = g_strdup_printf ("subp_%02d", qtdemux->n_subp_streams);
stream->pad =
gst_pad_new_from_static_template (&gst_qtdemux_subpsrc_template, name);
g_free (name);
qtdemux->n_subp_streams++;
} else {
GST_DEBUG_OBJECT (qtdemux, "unknown stream type");
goto done;
}
qtdemux->streams[qtdemux->n_streams] = stream;
qtdemux->n_streams++;
GST_DEBUG_OBJECT (qtdemux, "n_streams is now %d", qtdemux->n_streams);
if (stream->pad) {
GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
gst_pad_use_fixed_caps (stream->pad);
gst_pad_set_event_function (stream->pad, gst_qtdemux_handle_src_event);
gst_pad_set_query_type_function (stream->pad,
gst_qtdemux_get_src_query_types);
gst_pad_set_query_function (stream->pad, gst_qtdemux_handle_src_query);
GST_DEBUG_OBJECT (qtdemux, "setting caps %" GST_PTR_FORMAT, stream->caps);
gst_pad_set_caps (stream->pad, stream->caps);
GST_DEBUG_OBJECT (qtdemux, "adding pad %s %p to qtdemux %p",
GST_OBJECT_NAME (stream->pad), stream->pad, qtdemux);
gst_pad_set_active (stream->pad, TRUE);
gst_element_add_pad (GST_ELEMENT_CAST (qtdemux), stream->pad);
if (stream->pending_tags)
gst_tag_list_free (stream->pending_tags);
stream->pending_tags = list;
/* post now, send event on pad later */
GST_DEBUG_OBJECT (qtdemux, "Posting tags %" GST_PTR_FORMAT,
stream->pending_tags);
gst_element_post_message (GST_ELEMENT (qtdemux),
gst_message_new_tag_full (GST_OBJECT (qtdemux), stream->pad,
gst_tag_list_copy (list)));
stream->send_global_tags = TRUE;
}
done:
return TRUE;
too_many_streams:
{
GST_ELEMENT_WARNING (qtdemux, STREAM, DECODE,
(_("This file contains too many streams. Only playing first %d"),
GST_QTDEMUX_MAX_STREAMS), (NULL));
return TRUE;
}
}
/* collect all samples for @stream by reading the info from @stbl
*/
static gboolean
qtdemux_parse_samples (GstQTDemux * qtdemux, QtDemuxStream * stream,
GNode * stbl)
{
QtAtomParser co_reader;
QtAtomParser stsz;
QtAtomParser stsc;
QtAtomParser stts;
GNode *ctts;
guint32 sample_size;
guint32 n_samples;
guint32 n_samples_per_chunk;
int sample_index;
QtDemuxSample *samples;
gint i, j, k;
int index;
guint64 timestamp;
guint co_size;
/* sample to chunk */
if (!qtdemux_tree_get_child_by_type_full (stbl, FOURCC_stsc, &stsc))
goto corrupt_file;
/* sample size */
if (!qtdemux_tree_get_child_by_type_full (stbl, FOURCC_stsz, &stsz))
goto corrupt_file;
/* chunk offsets */
if (qtdemux_tree_get_child_by_type_full (stbl, FOURCC_stco, &co_reader))
co_size = sizeof (guint32);
else if (qtdemux_tree_get_child_by_type_full (stbl, FOURCC_co64, &co_reader))
co_size = sizeof (guint64);
else
goto corrupt_file;
/* sample time */
if (!qtdemux_tree_get_child_by_type_full (stbl, FOURCC_stts, &stts))
goto corrupt_file;
if (!qt_atom_parser_skip (&stsz, 1 + 3) ||
!qt_atom_parser_get_uint32 (&stsz, &sample_size))
goto corrupt_file;
if (sample_size == 0 || stream->sampled) {
/* skip version, flags, number of entries */
if (!gst_byte_reader_skip (&co_reader, 1 + 3 + 4))
goto corrupt_file;
if (!qt_atom_parser_get_uint32 (&stsz, &n_samples))
goto corrupt_file;
if (n_samples == 0)
goto no_samples;
GST_DEBUG_OBJECT (qtdemux, "stsz sample_size 0, allocating n_samples %u "
"(%u MB)", n_samples,
(guint) (n_samples * sizeof (QtDemuxSample)) >> 20);
if (n_samples >= QTDEMUX_MAX_SAMPLE_INDEX_SIZE / sizeof (QtDemuxSample))
goto index_too_big;
samples = g_try_new0 (QtDemuxSample, n_samples);
if (samples == NULL)
goto out_of_memory;
stream->n_samples = n_samples;
stream->samples = samples;
/* set the sample sizes */
if (sample_size == 0) {
/* different sizes for each sample */
if (!qt_atom_parser_has_chunks (&stsz, n_samples, 4))
goto corrupt_file;
for (i = 0; i < n_samples; i++) {
samples[i].size = qt_atom_parser_get_uint32_unchecked (&stsz);
GST_LOG_OBJECT (qtdemux, "sample %d has size %u", i, samples[i].size);
}
} else {
/* samples have the same size */
GST_LOG_OBJECT (qtdemux, "all samples have size %u", sample_size);
for (i = 0; i < n_samples; i++)
samples[i].size = sample_size;
}
/* set the sample offsets in the file */
if (!qt_atom_parser_skip (&stsc, 1 + 3) ||
!qt_atom_parser_get_uint32 (&stsc, &n_samples_per_chunk))
goto corrupt_file;
if (!qt_atom_parser_has_chunks (&stsc, n_samples_per_chunk, 12))
goto corrupt_file;
index = 0;
for (i = 0; i < n_samples_per_chunk; i++) {
QtAtomParser co_chunk;
guint32 first_chunk, last_chunk;
guint32 samples_per_chunk;
first_chunk = qt_atom_parser_get_uint32_unchecked (&stsc);
samples_per_chunk = qt_atom_parser_get_uint32_unchecked (&stsc);
qt_atom_parser_skip_unchecked (&stsc, 4);
/* chunk numbers are counted from 1 it seems */
if (G_UNLIKELY (first_chunk == 0))
goto corrupt_file;
else
--first_chunk;
/* the last chunk of each entry is calculated by taking the first chunk
* of the next entry; except if there is no next, where we fake it with
* INT_MAX */
if (G_UNLIKELY (i == n_samples_per_chunk - 1)) {
last_chunk = G_MAXUINT32;
} else {
last_chunk = qt_atom_parser_peek_uint32_unchecked (&stsc);
if (G_UNLIKELY (last_chunk == 0))
goto corrupt_file;
else
--last_chunk;
}
if (G_UNLIKELY (last_chunk < first_chunk))
goto corrupt_file;
if (last_chunk != G_MAXUINT32) {
if (!qt_atom_parser_peek_sub (&co_reader, first_chunk * co_size,
(last_chunk - first_chunk) * co_size, &co_chunk))
goto corrupt_file;
} else {
co_chunk = co_reader;
if (!qt_atom_parser_skip (&co_chunk, first_chunk * co_size))
goto corrupt_file;
}
for (j = first_chunk; j < last_chunk; j++) {
guint64 chunk_offset;
if (!qt_atom_parser_get_offset (&co_chunk, co_size, &chunk_offset))
goto corrupt_file;
for (k = 0; k < samples_per_chunk; k++) {
GST_LOG_OBJECT (qtdemux, "Creating entry %d with offset %"
G_GUINT64_FORMAT, index, chunk_offset);
samples[index].offset = chunk_offset;
chunk_offset += samples[index].size;
index++;
if (G_UNLIKELY (index >= n_samples))
goto done2;
}
}
}
done2:
{
guint32 n_sample_times;
guint32 time;
if (!qt_atom_parser_skip (&stts, 4))
goto corrupt_file;
if (!qt_atom_parser_get_uint32 (&stts, &n_sample_times))
goto corrupt_file;
GST_LOG_OBJECT (qtdemux, "%u timestamp blocks", n_sample_times);
/* make sure there's enough data */
if (!qt_atom_parser_has_chunks (&stts, n_sample_times, 2 * 4))
goto corrupt_file;
timestamp = 0;
stream->min_duration = 0;
time = 0;
index = 0;
for (i = 0; i < n_sample_times; i++) {
guint32 n;
guint32 duration;
n = qt_atom_parser_get_uint32_unchecked (&stts);
duration = qt_atom_parser_get_uint32_unchecked (&stts);
GST_LOG_OBJECT (qtdemux, "block %d, %u timestamps, duration %u ", i, n,
duration);
/* take first duration for fps */
if (G_UNLIKELY (stream->min_duration == 0))
stream->min_duration = duration;
for (j = 0; j < n; j++) {
GST_DEBUG_OBJECT (qtdemux,
"sample %d: index %d, timestamp %" GST_TIME_FORMAT, index, j,
GST_TIME_ARGS (timestamp));
samples[index].timestamp = timestamp;
/* add non-scaled values to avoid rounding errors */
time += duration;
timestamp =
gst_util_uint64_scale (time, GST_SECOND, stream->timescale);
samples[index].duration = timestamp - samples[index].timestamp;
index++;
if (G_UNLIKELY (index >= n_samples))
goto done3;
}
}
/* fill up empty timestamps with the last timestamp, this can happen when
* the last samples do not decode and so we don't have timestamps for them.
* We however look at the last timestamp to estimate the track length so we
* need something in here. */
for (; index < n_samples; index++) {
GST_DEBUG_OBJECT (qtdemux,
"fill sample %d: timestamp %" GST_TIME_FORMAT, index,
GST_TIME_ARGS (timestamp));
samples[index].timestamp = timestamp;
samples[index].duration = -1;
}
}
done3:
{
/* FIXME: split this block out into a separate function */
QtAtomParser stss, stps;
/* sample sync, can be NULL */
if (qtdemux_tree_get_child_by_type_full (stbl, FOURCC_stss, &stss)) {
guint32 n_sample_syncs;
/* mark keyframes */
if (!qt_atom_parser_skip (&stss, 4))
goto corrupt_file;
if (!qt_atom_parser_get_uint32 (&stss, &n_sample_syncs))
goto corrupt_file;
if (n_sample_syncs == 0) {
stream->all_keyframe = TRUE;
} else {
/* make sure there's enough data */
if (!qt_atom_parser_has_chunks (&stss, n_sample_syncs, 4))
goto corrupt_file;
for (i = 0; i < n_sample_syncs; i++) {
/* note that the first sample is index 1, not 0 */
index = qt_atom_parser_get_uint32_unchecked (&stss);
if (G_LIKELY (index > 0 && index <= n_samples))
samples[index - 1].keyframe = TRUE;
}
}
/* stps marks partial sync frames like open GOP I-Frames */
if (qtdemux_tree_get_child_by_type_full (stbl, FOURCC_stps, &stps)) {
guint32 n_sample_syncs;
if (!qt_atom_parser_skip (&stps, 4))
goto corrupt_file;
if (!qt_atom_parser_get_uint32 (&stps, &n_sample_syncs))
goto corrupt_file;
if (n_sample_syncs != 0) {
/* no entries, the stss table contains the real sync
* samples */
} else {
/* make sure there's enough data */
if (!qt_atom_parser_has_chunks (&stps, n_sample_syncs, 4))
goto corrupt_file;
for (i = 0; i < n_sample_syncs; i++) {
/* note that the first sample is index 1, not 0 */
index = qt_atom_parser_get_uint32_unchecked (&stps);
if (G_LIKELY (index > 0 && index <= n_samples))
samples[index - 1].keyframe = TRUE;
}
}
}
} else {
/* no stss, all samples are keyframes */
stream->all_keyframe = TRUE;
}
}
} else {
GST_DEBUG_OBJECT (qtdemux,
"stsz sample_size %d != 0, treating chunks as samples", sample_size);
/* skip version + flags */
if (!gst_byte_reader_skip (&co_reader, 1 + 3))
goto corrupt_file;
/* treat chunks as samples */
if (!gst_byte_reader_get_uint32_be (&co_reader, &n_samples))
goto corrupt_file;
if (n_samples == 0)
goto no_samples;
GST_DEBUG_OBJECT (qtdemux, "allocating n_samples %u (%u MB)", n_samples,
(guint) (n_samples * sizeof (QtDemuxSample)) >> 20);
if (n_samples >= QTDEMUX_MAX_SAMPLE_INDEX_SIZE / sizeof (QtDemuxSample))
goto index_too_big;
samples = g_try_new0 (QtDemuxSample, n_samples);
if (samples == NULL)
goto out_of_memory;
stream->n_samples = n_samples;
stream->samples = samples;
if (!qt_atom_parser_skip (&stsc, 1 + 3) ||
!qt_atom_parser_get_uint32 (&stsc, &n_samples_per_chunk))
goto corrupt_file;
GST_DEBUG_OBJECT (qtdemux, "n_samples_per_chunk %u", n_samples_per_chunk);
sample_index = 0;
timestamp = 0;
if (!qt_atom_parser_has_chunks (&stsc, n_samples_per_chunk, 12))
goto corrupt_file;
for (i = 0; i < n_samples_per_chunk; i++) {
QtAtomParser co_chunk;
guint32 first_chunk, last_chunk;
guint32 samples_per_chunk;
first_chunk = qt_atom_parser_get_uint32_unchecked (&stsc);
samples_per_chunk = qt_atom_parser_get_uint32_unchecked (&stsc);
qt_atom_parser_skip_unchecked (&stsc, 4);
/* chunk numbers are counted from 1 it seems */
if (G_UNLIKELY (first_chunk == 0))
goto corrupt_file;
else
--first_chunk;
/* the last chunk of each entry is calculated by taking the first chunk
* of the next entry; except if there is no next, where we fake it with
* INT_MAX */
if (G_UNLIKELY (i == (n_samples_per_chunk - 1))) {
last_chunk = G_MAXUINT32;
} else {
last_chunk = qt_atom_parser_peek_uint32_unchecked (&stsc);
if (G_UNLIKELY (last_chunk == 0))
goto corrupt_file;
else
--last_chunk;
}
GST_LOG_OBJECT (qtdemux,
"entry %d has first_chunk %d, last_chunk %d, samples_per_chunk %d", i,
first_chunk, last_chunk, samples_per_chunk);
if (G_UNLIKELY (last_chunk < first_chunk))
goto corrupt_file;
if (last_chunk != G_MAXUINT32) {
if (!qt_atom_parser_peek_sub (&co_reader, first_chunk * co_size,
(last_chunk - first_chunk) * co_size, &co_chunk))
goto corrupt_file;
} else {
co_chunk = co_reader;
if (!qt_atom_parser_skip (&co_chunk, first_chunk * co_size))
goto corrupt_file;
}
for (j = first_chunk; j < last_chunk; j++) {
if (j >= n_samples)
goto done;
samples[j].offset =
qt_atom_parser_get_offset_unchecked (&co_chunk, co_size);
GST_LOG_OBJECT (qtdemux, "Created entry %d with offset "
"%" G_GUINT64_FORMAT, j, samples[j].offset);
if (stream->samples_per_frame * stream->bytes_per_frame) {
samples[j].size = (samples_per_chunk * stream->n_channels) /
stream->samples_per_frame * stream->bytes_per_frame;
} else {
samples[j].size = samples_per_chunk;
}
GST_DEBUG_OBJECT (qtdemux, "sample %d: timestamp %" GST_TIME_FORMAT
", size %u", j, GST_TIME_ARGS (timestamp), samples[j].size);
samples[j].timestamp = timestamp;
sample_index += samples_per_chunk;
timestamp = gst_util_uint64_scale (sample_index,
GST_SECOND, stream->timescale);
samples[j].duration = timestamp - samples[j].timestamp;
samples[j].keyframe = TRUE;
}
}
}
/* composition time to sample */
if ((ctts = qtdemux_tree_get_child_by_type (stbl, FOURCC_ctts))) {
const guint8 *ctts_data, *ctts_p;
guint32 n_entries;
guint32 count;
gint32 soffset;
ctts_data = (const guint8 *) ctts->data;
n_entries = QT_UINT32 (ctts_data + 12);
/* Fill in the pts_offsets */
index = 0;
ctts_p = ctts_data + 16;
/* FIXME: make sure we don't read beyond the atom size/boundary */
for (i = 0; i < n_entries; i++) {
count = QT_UINT32 (ctts_p);
ctts_p += 4;
soffset = QT_UINT32 (ctts_p);
ctts_p += 4;
for (j = 0; j < count; j++) {
/* we operate with very small soffset values here, it shouldn't overflow */
samples[index].pts_offset = soffset * GST_SECOND / stream->timescale;
index++;
if (G_UNLIKELY (index >= n_samples))
goto done;
}
}
}
done:
return TRUE;
/* ERRORS */
corrupt_file:
{
GST_ELEMENT_ERROR (qtdemux, STREAM, DECODE,
(_("This file is corrupt and cannot be played.")), (NULL));
return FALSE;
}
no_samples:
{
GST_WARNING_OBJECT (qtdemux, "stream has no samples");
return FALSE;
}
out_of_memory:
{
GST_WARNING_OBJECT (qtdemux, "failed to allocate %d samples", n_samples);
return FALSE;
}
index_too_big:
{
GST_WARNING_OBJECT (qtdemux, "not allocating index of %d samples, would "
"be larger than %uMB (broken file?)", n_samples,
QTDEMUX_MAX_SAMPLE_INDEX_SIZE >> 20);
return FALSE;
}
}
/* collect all segment info for @stream.
*/
static gboolean
qtdemux_parse_segments (GstQTDemux * qtdemux, QtDemuxStream * stream,
GNode * trak)
{
GNode *edts;
/* parse and prepare segment info from the edit list */
GST_DEBUG_OBJECT (qtdemux, "looking for edit list container");
stream->n_segments = 0;
stream->segments = NULL;
if ((edts = qtdemux_tree_get_child_by_type (trak, FOURCC_edts))) {
GNode *elst;
gint n_segments;
gint i, count;
guint64 time, stime;
guint8 *buffer;
GST_DEBUG_OBJECT (qtdemux, "looking for edit list");
if (!(elst = qtdemux_tree_get_child_by_type (edts, FOURCC_elst)))
goto done;
buffer = elst->data;
n_segments = QT_UINT32 (buffer + 12);
/* we might allocate a bit too much, at least allocate 1 segment */
stream->segments = g_new (QtDemuxSegment, MAX (n_segments, 1));
/* segments always start from 0 */
time = 0;
stime = 0;
count = 0;
for (i = 0; i < n_segments; i++) {
guint64 duration;
guint64 media_time;
QtDemuxSegment *segment;
guint32 rate_int;
media_time = QT_UINT32 (buffer + 20 + i * 12);
/* -1 media time is an empty segment, just ignore it */
if (media_time == G_MAXUINT32)
continue;
duration = QT_UINT32 (buffer + 16 + i * 12);
segment = &stream->segments[count++];
/* time and duration expressed in global timescale */
segment->time = stime;
/* add non scaled values so we don't cause roundoff errors */
time += duration;
stime = gst_util_uint64_scale (time, GST_SECOND, qtdemux->timescale);
segment->stop_time = stime;
segment->duration = stime - segment->time;
/* media_time expressed in stream timescale */
segment->media_start =
gst_util_uint64_scale (media_time, GST_SECOND, stream->timescale);
segment->media_stop = segment->media_start + segment->duration;
rate_int = GST_READ_UINT32_BE (buffer + 24 + i * 12);
if (rate_int <= 1) {
/* 0 is not allowed, some programs write 1 instead of the floating point
* value */
GST_WARNING_OBJECT (qtdemux, "found suspicious rate %" G_GUINT32_FORMAT,
rate_int);
segment->rate = 1;
} else {
segment->rate = rate_int / 65536.0;
}
GST_DEBUG_OBJECT (qtdemux, "created segment %d time %" GST_TIME_FORMAT
", duration %" GST_TIME_FORMAT ", media_time %" GST_TIME_FORMAT
", rate %g, (%d)", i, GST_TIME_ARGS (segment->time),
GST_TIME_ARGS (segment->duration),
GST_TIME_ARGS (segment->media_start), segment->rate, rate_int);
}
GST_DEBUG_OBJECT (qtdemux, "found %d non-empty segments", count);
stream->n_segments = count;
}
done:
/* push based does not handle segments, so act accordingly here,
* and warn if applicable */
if (!qtdemux->pullbased) {
GST_WARNING_OBJECT (qtdemux, "streaming; discarding edit list segments");
/* remove and use default one below, we stream like it anyway */
g_free (stream->segments);
stream->segments = NULL;
stream->n_segments = 0;
}
/* no segments, create one to play the complete trak */
if (stream->n_segments == 0) {
GstClockTime stream_duration = 0;
if (stream->segments == NULL)
stream->segments = g_new (QtDemuxSegment, 1);
/* samples know best */
if (stream->n_samples > 0) {
stream_duration =
stream->samples[stream->n_samples - 1].timestamp +
stream->samples[stream->n_samples - 1].pts_offset +
stream->samples[stream->n_samples - 1].duration;
}
stream->segments[0].time = 0;
stream->segments[0].stop_time = stream_duration;
stream->segments[0].duration = stream_duration;
stream->segments[0].media_start = 0;
stream->segments[0].media_stop = stream_duration;
stream->segments[0].rate = 1.0;
GST_DEBUG_OBJECT (qtdemux, "created dummy segment %" GST_TIME_FORMAT,
GST_TIME_ARGS (stream_duration));
stream->n_segments = 1;
}
GST_DEBUG_OBJECT (qtdemux, "using %d segments", stream->n_segments);
return TRUE;
}
/* parse the traks.
* With each track we associate a new QtDemuxStream that contains all the info
* about the trak.
* traks that do not decode to something (like strm traks) will not have a pad.
*/
static gboolean
qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak)
{
QtAtomParser tkhd;
int offset;
GNode *mdia;
GNode *mdhd;
GNode *hdlr;
GNode *minf;
GNode *stbl;
GNode *stsd;
GNode *mp4a;
GNode *mp4v;
GNode *wave;
GNode *esds;
GNode *pasp;
QtDemuxStream *stream;
GstTagList *list = NULL;
gchar *codec = NULL;
const guint8 *stsd_data;
guint32 version;
guint32 tkhd_flags;
guint8 tkhd_version;
stream = g_new0 (QtDemuxStream, 1);
/* new streams always need a discont */
stream->discont = TRUE;
/* we enable clipping for raw audio/video streams */
stream->need_clip = FALSE;
stream->segment_index = -1;
stream->time_position = 0;
stream->sample_index = -1;
stream->last_ret = GST_FLOW_OK;
if (!qtdemux_tree_get_child_by_type_full (trak, FOURCC_tkhd, &tkhd) ||
!qt_atom_parser_get_uint8 (&tkhd, &tkhd_version) ||
!qt_atom_parser_get_uint24 (&tkhd, &tkhd_flags))
goto corrupt_file;
GST_LOG_OBJECT (qtdemux, "track[tkhd] version/flags: 0x%02x/%06x",
tkhd_version, tkhd_flags);
if (!(mdia = qtdemux_tree_get_child_by_type (trak, FOURCC_mdia)))
goto corrupt_file;
if (!(mdhd = qtdemux_tree_get_child_by_type (mdia, FOURCC_mdhd))) {
/* be nice for some crooked mjp2 files that use mhdr for mdhd */
if (qtdemux->major_brand != FOURCC_mjp2 ||
!(mdhd = qtdemux_tree_get_child_by_type (mdia, FOURCC_mhdr)))
goto corrupt_file;
}
version = QT_UINT32 ((guint8 *) mdhd->data + 8);
GST_LOG_OBJECT (qtdemux, "track version/flags: %08x", version);
if (version == 0x01000000) {
stream->timescale = QT_UINT32 ((guint8 *) mdhd->data + 28);
stream->duration = QT_UINT64 ((guint8 *) mdhd->data + 32);
} else {
stream->timescale = QT_UINT32 ((guint8 *) mdhd->data + 20);
stream->duration = QT_UINT32 ((guint8 *) mdhd->data + 24);
}
GST_LOG_OBJECT (qtdemux, "track timescale: %" G_GUINT32_FORMAT,
stream->timescale);
GST_LOG_OBJECT (qtdemux, "track duration: %" G_GUINT64_FORMAT,
stream->duration);
if (G_UNLIKELY (stream->timescale == 0 || qtdemux->timescale == 0))
goto corrupt_file;
if (qtdemux->duration != G_MAXINT32 && stream->duration != G_MAXINT32) {
guint64 tdur1, tdur2;
/* don't overflow */
tdur1 = stream->timescale * (guint64) qtdemux->duration;
tdur2 = qtdemux->timescale * (guint64) stream->duration;
/* HACK:
* some of those trailers, nowadays, have prologue images that are
* themselves vide tracks as well. I haven't really found a way to
* identify those yet, except for just looking at their duration. */
if (tdur1 != 0 && (tdur2 * 10 / tdur1) < 2) {
GST_WARNING_OBJECT (qtdemux,
"Track shorter than 20%% (%" G_GUINT64_FORMAT "/%" G_GUINT32_FORMAT
" vs. %" G_GUINT32_FORMAT "/%" G_GUINT32_FORMAT ") of the stream "
"found, assuming preview image or something; skipping track",
stream->duration, stream->timescale, qtdemux->duration,
qtdemux->timescale);
g_free (stream);
return TRUE;
}
}
if (!(hdlr = qtdemux_tree_get_child_by_type (mdia, FOURCC_hdlr)))
goto corrupt_file;
GST_LOG_OBJECT (qtdemux, "track type: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (QT_FOURCC ((guint8 *) hdlr->data + 12)));
stream->subtype = QT_FOURCC ((guint8 *) hdlr->data + 16);
GST_LOG_OBJECT (qtdemux, "track subtype: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (stream->subtype));
if (!(minf = qtdemux_tree_get_child_by_type (mdia, FOURCC_minf)))
goto corrupt_file;
if (!(stbl = qtdemux_tree_get_child_by_type (minf, FOURCC_stbl)))
goto corrupt_file;
/* parse stsd */
if (!(stsd = qtdemux_tree_get_child_by_type (stbl, FOURCC_stsd)))
goto corrupt_file;
stsd_data = (const guint8 *) stsd->data;
if (stream->subtype == FOURCC_vide) {
guint32 w, h, fourcc;
stream->sampled = TRUE;
/* version 1 uses some 64-bit ints */
if (!qt_atom_parser_skip (&tkhd, (tkhd_version == 1) ? 84 : 72) ||
!qt_atom_parser_get_uint32 (&tkhd, &w) ||
!qt_atom_parser_get_uint32 (&tkhd, &h))
goto corrupt_file;
stream->display_width = w >> 16;
stream->display_height = h >> 16;
offset = 16;
stream->fourcc = fourcc = QT_FOURCC (stsd_data + offset + 4);
GST_LOG_OBJECT (qtdemux, "st type: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
stream->width = QT_UINT16 (stsd_data + offset + 32);
stream->height = QT_UINT16 (stsd_data + offset + 34);
stream->fps_n = 0; /* this is filled in later */
stream->fps_d = 0; /* this is filled in later */
stream->bits_per_sample = QT_UINT16 (stsd_data + offset + 82);
stream->color_table_id = QT_UINT16 (stsd_data + offset + 84);
GST_LOG_OBJECT (qtdemux, "frame count: %u",
QT_UINT16 (stsd_data + offset + 48));
if (fourcc == FOURCC_drms)
goto error_encrypted;
stream->caps =
qtdemux_video_caps (qtdemux, stream, fourcc, stsd_data, &codec);
if (codec) {
list = gst_tag_list_new ();
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_VIDEO_CODEC, codec, NULL);
g_free (codec);
codec = NULL;
}
esds = NULL;
pasp = NULL;
mp4v = qtdemux_tree_get_child_by_type (stsd, FOURCC_mp4v);
/* H264 is MPEG-4 after all,
* and qt seems to put MPEG-4 stuff in there as well */
if (!mp4v)
mp4v = qtdemux_tree_get_child_by_type (stsd, FOURCC_avc1);
if (mp4v) {
esds = qtdemux_tree_get_child_by_type (mp4v, FOURCC_esds);
pasp = qtdemux_tree_get_child_by_type (mp4v, FOURCC_pasp);
}
if (pasp) {
const guint8 *pasp_data = (const guint8 *) pasp->data;
stream->par_w = QT_UINT32 (pasp_data + 8);
stream->par_h = QT_UINT32 (pasp_data + 12);
} else {
stream->par_w = 0;
stream->par_h = 0;
}
if (esds) {
gst_qtdemux_handle_esds (qtdemux, stream, esds, list);
} else {
switch (fourcc) {
case FOURCC_avc1:
{
gint len = QT_UINT32 (stsd_data) - 0x66;
const guint8 *avc_data = stsd_data + 0x66;
/* find avcC */
while (len >= 0x8 &&
QT_FOURCC (avc_data + 0x4) != FOURCC_avcC &&
QT_UINT32 (avc_data) < len) {
len -= QT_UINT32 (avc_data);
avc_data += QT_UINT32 (avc_data);
}
/* parse, if found */
if (len > 0x8 && QT_FOURCC (avc_data + 0x4) == FOURCC_avcC) {
GstBuffer *buf;
gint size;
if (QT_UINT32 (avc_data) < len)
size = QT_UINT32 (avc_data) - 0x8;
else
size = len - 0x8;
GST_DEBUG_OBJECT (qtdemux, "found avcC codec_data in stsd");
buf = gst_buffer_new_and_alloc (size);
memcpy (GST_BUFFER_DATA (buf), avc_data + 0x8, size);
gst_caps_set_simple (stream->caps,
"codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
}
break;
}
case FOURCC_mjp2:
{
GNode *jp2h, *colr, *mjp2, *field, *prefix;
const guint8 *data;
guint32 fourcc = 0;
GST_DEBUG_OBJECT (qtdemux, "found mjp2");
/* some required atoms */
mjp2 = qtdemux_tree_get_child_by_type (stsd, FOURCC_mjp2);
if (!mjp2)
break;
jp2h = qtdemux_tree_get_child_by_type (mjp2, FOURCC_jp2h);
if (!jp2h)
break;
colr = qtdemux_tree_get_child_by_type (jp2h, FOURCC_colr);
if (!colr)
break;
GST_DEBUG_OBJECT (qtdemux, "found colr");
/* try to extract colour space info */
if (QT_UINT8 ((guint8 *) colr->data + 8) == 1) {
switch (QT_UINT32 ((guint8 *) colr->data + 11)) {
case 16:
fourcc = GST_MAKE_FOURCC ('s', 'R', 'G', 'B');
break;
case 17:
fourcc = GST_MAKE_FOURCC ('G', 'R', 'A', 'Y');
break;
case 18:
fourcc = GST_MAKE_FOURCC ('s', 'Y', 'U', 'V');
break;
default:
break;
}
}
if (fourcc)
gst_caps_set_simple (stream->caps,
"fourcc", GST_TYPE_FOURCC, fourcc, NULL);
/* some optional atoms */
field = qtdemux_tree_get_child_by_type (mjp2, FOURCC_fiel);
prefix = qtdemux_tree_get_child_by_type (mjp2, FOURCC_jp2x);
/* indicate possible fields in caps */
if (field) {
data = (guint8 *) field->data + 8;
if (*data != 1)
gst_caps_set_simple (stream->caps, "fields", G_TYPE_INT,
(gint) * data, NULL);
}
/* add codec_data if provided */
if (prefix) {
GstBuffer *buf;
gint len;
GST_DEBUG_OBJECT (qtdemux, "found prefix data in stsd");
data = prefix->data;
len = QT_UINT32 (data);
if (len > 0x8) {
len -= 0x8;
buf = gst_buffer_new_and_alloc (len);
memcpy (GST_BUFFER_DATA (buf), data + 8, len);
gst_caps_set_simple (stream->caps,
"codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
}
}
break;
}
case FOURCC_SVQ3:
case FOURCC_VP31:
{
GstBuffer *buf;
gint len = QT_UINT32 (stsd_data);
GST_DEBUG_OBJECT (qtdemux, "found codec_data in stsd");
buf = gst_buffer_new_and_alloc (len);
memcpy (GST_BUFFER_DATA (buf), stsd_data, len);
gst_caps_set_simple (stream->caps,
"codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
break;
}
case FOURCC_rle_:
{
gst_caps_set_simple (stream->caps,
"depth", G_TYPE_INT, QT_UINT16 (stsd_data + offset + 82), NULL);
break;
}
case FOURCC_XiTh:
{
GNode *xith, *xdxt;
GST_DEBUG_OBJECT (qtdemux, "found XiTh");
xith = qtdemux_tree_get_child_by_type (stsd, FOURCC_XiTh);
if (!xith)
break;
xdxt = qtdemux_tree_get_child_by_type (xith, FOURCC_XdxT);
if (!xdxt)
break;
GST_DEBUG_OBJECT (qtdemux, "found XdxT node");
/* collect the headers and store them in a stream list so that we can
* send them out first */
qtdemux_parse_theora_extension (qtdemux, stream, xdxt);
break;
}
default:
break;
}
}
GST_INFO_OBJECT (qtdemux,
"type %" GST_FOURCC_FORMAT " caps %" GST_PTR_FORMAT,
GST_FOURCC_ARGS (fourcc), stream->caps);
} else if (stream->subtype == FOURCC_soun) {
int version, samplesize;
guint32 fourcc;
int len;
guint16 compression_id;
len = QT_UINT32 (stsd_data + 16);
GST_LOG_OBJECT (qtdemux, "stsd len: %d", len);
stream->fourcc = fourcc = QT_FOURCC (stsd_data + 16 + 4);
GST_LOG_OBJECT (qtdemux, "stsd type: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (stream->fourcc));
offset = 32;
version = QT_UINT32 (stsd_data + offset);
stream->n_channels = QT_UINT16 (stsd_data + offset + 8);
samplesize = QT_UINT16 (stsd_data + offset + 10);
compression_id = QT_UINT16 (stsd_data + offset + 12);
stream->rate = QT_FP32 (stsd_data + offset + 16);
GST_LOG_OBJECT (qtdemux, "version/rev: %08x", version);
GST_LOG_OBJECT (qtdemux, "vendor: %08x",
QT_UINT32 (stsd_data + offset + 4));
GST_LOG_OBJECT (qtdemux, "n_channels: %d", stream->n_channels);
GST_LOG_OBJECT (qtdemux, "sample_size: %d", samplesize);
GST_LOG_OBJECT (qtdemux, "compression_id: %d", compression_id);
GST_LOG_OBJECT (qtdemux, "packet size: %d",
QT_UINT16 (stsd_data + offset + 14));
GST_LOG_OBJECT (qtdemux, "sample rate: %g", stream->rate);
if (compression_id == 0xfffe)
stream->sampled = TRUE;
/* first assume uncompressed audio */
stream->bytes_per_sample = samplesize / 8;
stream->samples_per_frame = stream->n_channels;
stream->bytes_per_frame = stream->n_channels * stream->bytes_per_sample;
stream->samples_per_packet = stream->samples_per_frame;
stream->bytes_per_packet = stream->bytes_per_sample;
offset = 52;
switch (fourcc) {
/* Yes, these have to be hard-coded */
case FOURCC_MAC6:
{
stream->samples_per_packet = 6;
stream->bytes_per_packet = 1;
stream->bytes_per_frame = 1 * stream->n_channels;
stream->bytes_per_sample = 1;
stream->samples_per_frame = 6 * stream->n_channels;
break;
}
case FOURCC_MAC3:
{
stream->samples_per_packet = 3;
stream->bytes_per_packet = 1;
stream->bytes_per_frame = 1 * stream->n_channels;
stream->bytes_per_sample = 1;
stream->samples_per_frame = 3 * stream->n_channels;
break;
}
case FOURCC_ima4:
{
stream->samples_per_packet = 64;
stream->bytes_per_packet = 34;
stream->bytes_per_frame = 34 * stream->n_channels;
stream->bytes_per_sample = 2;
stream->samples_per_frame = 64 * stream->n_channels;
break;
}
case FOURCC_ulaw:
case FOURCC_alaw:
{
stream->samples_per_packet = 1;
stream->bytes_per_packet = 1;
stream->bytes_per_frame = 1 * stream->n_channels;
stream->bytes_per_sample = 1;
stream->samples_per_frame = 1 * stream->n_channels;
break;
}
case FOURCC_agsm:
{
stream->samples_per_packet = 160;
stream->bytes_per_packet = 33;
stream->bytes_per_frame = 33 * stream->n_channels;
stream->bytes_per_sample = 2;
stream->samples_per_frame = 160 * stream->n_channels;
break;
}
default:
break;
}
if (version == 0x00010000) {
switch (fourcc) {
case FOURCC_twos:
case FOURCC_sowt:
case FOURCC_raw_:
break;
default:
{
/* only parse extra decoding config for non-pcm audio */
stream->samples_per_packet = QT_UINT32 (stsd_data + offset);
stream->bytes_per_packet = QT_UINT32 (stsd_data + offset + 4);
stream->bytes_per_frame = QT_UINT32 (stsd_data + offset + 8);
stream->bytes_per_sample = QT_UINT32 (stsd_data + offset + 12);
GST_LOG_OBJECT (qtdemux, "samples/packet: %d",
stream->samples_per_packet);
GST_LOG_OBJECT (qtdemux, "bytes/packet: %d",
stream->bytes_per_packet);
GST_LOG_OBJECT (qtdemux, "bytes/frame: %d",
stream->bytes_per_frame);
GST_LOG_OBJECT (qtdemux, "bytes/sample: %d",
stream->bytes_per_sample);
if (!stream->sampled && stream->bytes_per_packet) {
stream->samples_per_frame = (stream->bytes_per_frame /
stream->bytes_per_packet) * stream->samples_per_packet;
GST_LOG_OBJECT (qtdemux, "samples/frame: %d",
stream->samples_per_frame);
}
break;
}
}
} else if (version == 0x00020000) {
union
{
gdouble fp;
guint64 val;
} qtfp;
stream->samples_per_packet = QT_UINT32 (stsd_data + offset);
qtfp.val = QT_UINT64 (stsd_data + offset + 4);
stream->rate = qtfp.fp;
stream->n_channels = QT_UINT32 (stsd_data + offset + 12);
GST_LOG_OBJECT (qtdemux, "samples/packet: %d",
stream->samples_per_packet);
GST_LOG_OBJECT (qtdemux, "sample rate: %g", stream->rate);
GST_LOG_OBJECT (qtdemux, "n_channels: %d", stream->n_channels);
} else {
GST_WARNING_OBJECT (qtdemux, "unknown version %08x", version);
}
if (fourcc == FOURCC_drms)
goto error_encrypted;
stream->caps = qtdemux_audio_caps (qtdemux, stream, fourcc, NULL, 0,
&codec);
switch (fourcc) {
case FOURCC_in24:
{
GNode *enda;
GNode *in24;
in24 = qtdemux_tree_get_child_by_type (stsd, FOURCC_in24);
enda = qtdemux_tree_get_child_by_type (in24, FOURCC_enda);
if (!enda) {
wave = qtdemux_tree_get_child_by_type (in24, FOURCC_wave);
if (wave)
enda = qtdemux_tree_get_child_by_type (wave, FOURCC_enda);
}
if (enda) {
gst_caps_set_simple (stream->caps,
"endianness", G_TYPE_INT, G_LITTLE_ENDIAN, NULL);
}
break;
}
default:
break;
}
if (codec) {
list = gst_tag_list_new ();
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_AUDIO_CODEC, codec, NULL);
g_free (codec);
codec = NULL;
}
mp4a = qtdemux_tree_get_child_by_type (stsd, FOURCC_mp4a);
wave = NULL;
esds = NULL;
if (mp4a) {
wave = qtdemux_tree_get_child_by_type (mp4a, FOURCC_wave);
if (wave)
esds = qtdemux_tree_get_child_by_type (wave, FOURCC_esds);
if (!esds)
esds = qtdemux_tree_get_child_by_type (mp4a, FOURCC_esds);
}
if (esds) {
gst_qtdemux_handle_esds (qtdemux, stream, esds, list);
} else {
switch (fourcc) {
#if 0
/* FIXME: what is in the chunk? */
case FOURCC_QDMC:
{
gint len = QT_UINT32 (stsd_data);
/* seems to be always = 116 = 0x74 */
break;
}
#endif
case FOURCC_QDM2:
{
gint len = QT_UINT32 (stsd_data);
if (len > 0x4C) {
GstBuffer *buf = gst_buffer_new_and_alloc (len - 0x4C);
memcpy (GST_BUFFER_DATA (buf), stsd_data + 0x4C, len - 0x4C);
gst_caps_set_simple (stream->caps,
"codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
}
gst_caps_set_simple (stream->caps,
"samplesize", G_TYPE_INT, samplesize, NULL);
break;
}
case FOURCC_alac:
{
gint len = QT_UINT32 (stsd_data);
if (len > 0x34) {
GstBuffer *buf = gst_buffer_new_and_alloc (len - 0x34);
memcpy (GST_BUFFER_DATA (buf), stsd_data + 0x34, len - 0x34);
gst_caps_set_simple (stream->caps,
"codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
}
gst_caps_set_simple (stream->caps,
"samplesize", G_TYPE_INT, samplesize, NULL);
break;
}
case FOURCC_samr:
{
gint len = QT_UINT32 (stsd_data);
if (len > 0x34) {
GstBuffer *buf = gst_buffer_new_and_alloc (len - 0x34);
memcpy (GST_BUFFER_DATA (buf), stsd_data + 0x34, len - 0x34);
gst_caps_set_simple (stream->caps,
"codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
}
break;
}
default:
break;
}
}
GST_INFO_OBJECT (qtdemux,
"type %" GST_FOURCC_FORMAT " caps %" GST_PTR_FORMAT,
GST_FOURCC_ARGS (fourcc), stream->caps);
} else if (stream->subtype == FOURCC_strm) {
guint32 fourcc;
stream->fourcc = fourcc = QT_FOURCC (stsd_data + 16 + 4);
GST_LOG_OBJECT (qtdemux, "stsd type: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
if (fourcc != FOURCC_rtsp) {
GST_INFO_OBJECT (qtdemux, "unhandled stream type %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
goto unknown_stream;
}
stream->sampled = TRUE;
} else if (stream->subtype == FOURCC_subp) {
guint32 fourcc;
stream->sampled = TRUE;
offset = 16;
stream->fourcc = fourcc = QT_FOURCC (stsd_data + offset + 4);
GST_LOG_OBJECT (qtdemux, "st type: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
stream->caps =
qtdemux_subp_caps (qtdemux, stream, fourcc, stsd_data, &codec);
} else {
goto unknown_stream;
}
/* promote to sampled format */
if (stream->fourcc == FOURCC_samr) {
/* force mono 8000 Hz for AMR */
stream->sampled = TRUE;
stream->n_channels = 1;
stream->rate = 8000;
} else if (stream->fourcc == FOURCC_sawb) {
/* force mono 16000 Hz for AMR-WB */
stream->sampled = TRUE;
stream->n_channels = 1;
stream->rate = 16000;
} else if (stream->fourcc == FOURCC_mp4a) {
stream->sampled = TRUE;
}
/* collect sample information */
if (!qtdemux_parse_samples (qtdemux, stream, stbl))
goto samples_failed;
/* configure segments */
if (!qtdemux_parse_segments (qtdemux, stream, trak))
goto segments_failed;
/* now we are ready to add the stream */
gst_qtdemux_add_stream (qtdemux, stream, list);
return TRUE;
/* ERRORS */
corrupt_file:
{
GST_ELEMENT_ERROR (qtdemux, STREAM, DECODE,
(_("This file is corrupt and cannot be played.")), (NULL));
g_free (stream);
return FALSE;
}
error_encrypted:
{
GST_ELEMENT_ERROR (qtdemux, STREAM, DECRYPT, (NULL), (NULL));
g_free (stream);
return FALSE;
}
samples_failed:
{
/* we posted an error already */
g_free (stream);
return FALSE;
}
segments_failed:
{
/* we posted an error already */
g_free (stream);
return FALSE;
}
unknown_stream:
{
GST_INFO_OBJECT (qtdemux, "unknown subtype %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (stream->subtype));
g_free (stream);
return TRUE;
}
}
/* check if major or compatible brand is 3GP */
static inline gboolean
qtdemux_is_brand_3gp (GstQTDemux * qtdemux, gboolean major)
{
if (major) {
return ((qtdemux->major_brand & GST_MAKE_FOURCC (255, 255, 0, 0)) ==
GST_MAKE_FOURCC ('3', 'g', 0, 0));
} else if (qtdemux->comp_brands != NULL) {
guint8 *data = GST_BUFFER_DATA (qtdemux->comp_brands);
guint size = GST_BUFFER_SIZE (qtdemux->comp_brands);
gboolean res = FALSE;
while (size >= 4) {
res = res || ((QT_FOURCC (data) & GST_MAKE_FOURCC (255, 255, 0, 0)) ==
GST_MAKE_FOURCC ('3', 'g', 0, 0));
data += 4;
size -= 4;
}
return res;
} else {
return FALSE;
}
}
/* check if tag is a spec'ed 3GP tag keyword storing a string */
static inline gboolean
qtdemux_is_string_tag_3gp (GstQTDemux * qtdemux, guint32 fourcc)
{
return fourcc == FOURCC_cprt || fourcc == FOURCC_gnre || fourcc == FOURCC_titl
|| fourcc == FOURCC_dscp || fourcc == FOURCC_perf || fourcc == FOURCC_auth
|| fourcc == FOURCC_albm;
}
static void
qtdemux_tag_add_location (GstQTDemux * qtdemux, const char *tag,
const char *dummy, GNode * node)
{
const gchar *env_vars[] = { "GST_QT_TAG_ENCODING", "GST_TAG_ENCODING", NULL };
int offset;
char *name;
gchar *data;
gdouble longitude, latitude, altitude;
data = node->data;
offset = 14;
/* TODO: language code skipped */
name = gst_tag_freeform_string_to_utf8 (data + offset, -1, env_vars);
if (!name) {
/* do not alarm in trivial case, but bail out otherwise */
if (*(data + offset) != 0) {
GST_DEBUG_OBJECT (qtdemux, "failed to convert %s tag to UTF-8, "
"giving up", tag);
}
} else {
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE,
GST_TAG_GEO_LOCATION_NAME, name, NULL);
offset += strlen (name);
g_free (name);
}
/* +1 +1 = skip null-terminator and location role byte */
offset += 1 + 1;
longitude = QT_FP32 (data + offset);
offset += 4;
latitude = QT_FP32 (data + offset);
offset += 4;
altitude = QT_FP32 (data + offset);
/* one invalid means all are invalid */
if (longitude >= -180.0 && longitude <= 180.0 &&
latitude >= -90.0 && latitude <= 90.0) {
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE,
GST_TAG_GEO_LOCATION_LATITUDE, latitude,
GST_TAG_GEO_LOCATION_LONGITUDE, longitude,
GST_TAG_GEO_LOCATION_ELEVATION, altitude, NULL);
}
/* TODO: no GST_TAG_, so astronomical body and additional notes skipped */
}
static void
qtdemux_tag_add_year (GstQTDemux * qtdemux, const char *tag, const char *dummy,
GNode * node)
{
guint16 y;
GDate *date;
y = QT_UINT16 ((guint8 *) node->data + 12);
GST_DEBUG_OBJECT (qtdemux, "year: %u", y);
date = g_date_new_dmy (1, 1, y);
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE, tag, date, NULL);
g_date_free (date);
}
static void
qtdemux_tag_add_classification (GstQTDemux * qtdemux, const char *tag,
const char *dummy, GNode * node)
{
int offset;
char *tag_str = NULL;
guint8 *entity;
guint16 table;
offset = 12;
entity = (guint8 *) node->data + offset;
offset += 4;
table = QT_UINT16 ((guint8 *) node->data + offset);
/* Language code skipped */
offset += 4;
/* Tag format: "XXXX://Y[YYYY]/classification info string"
* XXXX: classification entity, fixed length 4 chars.
* Y[YYYY]: classification table, max 5 chars.
*/
tag_str = g_strdup_printf ("----://%u/%s",
table, (char *) node->data + offset);
/* memcpy To be sure we're preserving byte order */
memcpy (tag_str, entity, 4);
GST_DEBUG_OBJECT (qtdemux, "classification info: %s", tag_str);
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_APPEND, tag,
tag_str, NULL);
g_free (tag_str);
}
static gboolean
qtdemux_tag_add_str_full (GstQTDemux * qtdemux, const char *tag,
const char *dummy, GNode * node)
{
const gchar *env_vars[] = { "GST_QT_TAG_ENCODING", "GST_TAG_ENCODING", NULL };
GNode *data;
char *s;
int len;
guint32 type;
int offset;
gboolean ret = TRUE;
data = qtdemux_tree_get_child_by_type (node, FOURCC_data);
if (data) {
len = QT_UINT32 (data->data);
type = QT_UINT32 ((guint8 *) data->data + 8);
if (type == 0x00000001) {
s = gst_tag_freeform_string_to_utf8 ((char *) data->data + 16, len - 16,
env_vars);
if (s) {
GST_DEBUG_OBJECT (qtdemux, "adding tag %s", GST_STR_NULL (s));
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE, tag, s,
NULL);
g_free (s);
} else {
GST_DEBUG_OBJECT (qtdemux, "failed to convert %s tag to UTF-8", tag);
}
}
} else {
len = QT_UINT32 (node->data);
type = QT_UINT32 ((guint8 *) node->data + 4);
if ((type >> 24) == 0xa9) {
/* Type starts with the (C) symbol, so the next 32 bits are
* the language code, which we ignore */
offset = 12;
GST_DEBUG_OBJECT (qtdemux, "found international text tag");
} else if (len > 14 && qtdemux_is_string_tag_3gp (qtdemux,
QT_FOURCC ((guint8 *) node->data + 4))) {
guint32 type = QT_UINT32 ((guint8 *) node->data + 8);
/* we go for 3GP style encoding if major brands claims so,
* or if no hope for data be ok UTF-8, and compatible 3GP brand present */
if (qtdemux_is_brand_3gp (qtdemux, TRUE) ||
(qtdemux_is_brand_3gp (qtdemux, FALSE) &&
((type & 0x00FFFFFF) == 0x0) && (type >> 24 <= 0xF))) {
offset = 14;
/* 16-bit Language code is ignored here as well */
GST_DEBUG_OBJECT (qtdemux, "found 3gpp text tag");
} else {
goto normal;
}
} else {
normal:
offset = 8;
GST_DEBUG_OBJECT (qtdemux, "found normal text tag");
ret = FALSE; /* may have to fallback */
}
s = gst_tag_freeform_string_to_utf8 ((char *) node->data + offset,
len - offset, env_vars);
if (s) {
GST_DEBUG_OBJECT (qtdemux, "adding tag %s", GST_STR_NULL (s));
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE, tag, s, NULL);
g_free (s);
ret = TRUE;
} else {
GST_DEBUG_OBJECT (qtdemux, "failed to convert %s tag to UTF-8", tag);
}
}
return ret;
}
static void
qtdemux_tag_add_str (GstQTDemux * qtdemux, const char *tag,
const char *dummy, GNode * node)
{
qtdemux_tag_add_str_full (qtdemux, tag, dummy, node);
}
static void
qtdemux_tag_add_keywords (GstQTDemux * qtdemux, const char *tag,
const char *dummy, GNode * node)
{
const gchar *env_vars[] = { "GST_QT_TAG_ENCODING", "GST_TAG_ENCODING", NULL };
guint8 *data;
char *s, *t, *k = NULL;
int len;
int offset;
int count;
/* first try normal string tag if major brand not 3GP */
if (!qtdemux_is_brand_3gp (qtdemux, TRUE)) {
if (!qtdemux_tag_add_str_full (qtdemux, tag, dummy, node)) {
/* hm, that did not work, maybe 3gpp storage in non-3gpp major brand;
* let's try it 3gpp way after minor safety check */
data = node->data;
if (QT_UINT32 (data) < 15 || !qtdemux_is_brand_3gp (qtdemux, FALSE))
return;
} else
return;
}
GST_DEBUG_OBJECT (qtdemux, "found 3gpp keyword tag");
data = node->data;
len = QT_UINT32 (data);
if (len < 15)
goto short_read;
count = QT_UINT8 (data + 14);
offset = 15;
for (; count; count--) {
gint slen;
if (offset + 1 > len)
goto short_read;
slen = QT_UINT8 (data + offset);
offset += 1;
if (offset + slen > len)
goto short_read;
s = gst_tag_freeform_string_to_utf8 ((char *) node->data + offset,
slen, env_vars);
if (s) {
GST_DEBUG_OBJECT (qtdemux, "adding keyword %s", GST_STR_NULL (s));
if (k) {
t = g_strjoin (",", k, s, NULL);
g_free (s);
g_free (k);
k = t;
} else {
k = s;
}
} else {
GST_DEBUG_OBJECT (qtdemux, "failed to convert keyword to UTF-8");
}
offset += slen;
}
done:
if (k) {
GST_DEBUG_OBJECT (qtdemux, "adding tag %s", GST_STR_NULL (k));
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE, tag, k, NULL);
}
g_free (k);
return;
/* ERRORS */
short_read:
{
GST_DEBUG_OBJECT (qtdemux, "short read parsing 3GP keywords");
goto done;
}
}
static void
qtdemux_tag_add_num (GstQTDemux * qtdemux, const char *tag1,
const char *tag2, GNode * node)
{
GNode *data;
int len;
int type;
int n1, n2;
data = qtdemux_tree_get_child_by_type (node, FOURCC_data);
if (data) {
len = QT_UINT32 (data->data);
type = QT_UINT32 ((guint8 *) data->data + 8);
if (type == 0x00000000 && len >= 22) {
n1 = QT_UINT16 ((guint8 *) data->data + 18);
n2 = QT_UINT16 ((guint8 *) data->data + 20);
if (n1 > 0) {
GST_DEBUG_OBJECT (qtdemux, "adding tag %s=%d", tag1, n1);
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE,
tag1, n1, NULL);
}
if (n2 > 0) {
GST_DEBUG_OBJECT (qtdemux, "adding tag %s=%d", tag2, n2);
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE,
tag2, n2, NULL);
}
}
}
}
static void
qtdemux_tag_add_tmpo (GstQTDemux * qtdemux, const char *tag1, const char *dummy,
GNode * node)
{
GNode *data;
int len;
int type;
int n1;
data = qtdemux_tree_get_child_by_type (node, FOURCC_data);
if (data) {
len = QT_UINT32 (data->data);
type = QT_UINT32 ((guint8 *) data->data + 8);
GST_DEBUG_OBJECT (qtdemux, "have tempo tag, type=%d,len=%d", type, len);
/* some files wrongly have a type 0x0f=15, but it should be 0x15 */
if ((type == 0x00000015 || type == 0x0000000f) && len >= 18) {
n1 = QT_UINT16 ((guint8 *) data->data + 16);
if (n1) {
/* do not add bpm=0 */
GST_DEBUG_OBJECT (qtdemux, "adding tag %d", n1);
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE,
tag1, (gdouble) n1, NULL);
}
}
}
}
static void
qtdemux_tag_add_covr (GstQTDemux * qtdemux, const char *tag1, const char *dummy,
GNode * node)
{
GNode *data;
int len;
int type;
GstBuffer *buf;
data = qtdemux_tree_get_child_by_type (node, FOURCC_data);
if (data) {
len = QT_UINT32 (data->data);
type = QT_UINT32 ((guint8 *) data->data + 8);
GST_DEBUG_OBJECT (qtdemux, "have covr tag, type=%d,len=%d", type, len);
if ((type == 0x0000000d || type == 0x0000000e) && len > 16) {
if ((buf = gst_tag_image_data_to_image_buffer ((guint8 *) data->data + 16,
len - 16, GST_TAG_IMAGE_TYPE_NONE))) {
GST_DEBUG_OBJECT (qtdemux, "adding tag size %d", len - 16);
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE,
tag1, buf, NULL);
gst_buffer_unref (buf);
}
}
}
}
static void
qtdemux_tag_add_date (GstQTDemux * qtdemux, const char *tag, const char *dummy,
GNode * node)
{
GNode *data;
char *s;
int len;
int type;
data = qtdemux_tree_get_child_by_type (node, FOURCC_data);
if (data) {
len = QT_UINT32 (data->data);
type = QT_UINT32 ((guint8 *) data->data + 8);
if (type == 0x00000001) {
guint y, m = 1, d = 1;
gint ret;
s = g_strndup ((char *) data->data + 16, len - 16);
GST_DEBUG_OBJECT (qtdemux, "adding date '%s'", s);
ret = sscanf (s, "%u-%u-%u", &y, &m, &d);
if (ret >= 1 && y > 1500 && y < 3000) {
GDate *date;
date = g_date_new_dmy (d, m, y);
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE, tag,
date, NULL);
g_date_free (date);
} else {
GST_DEBUG_OBJECT (qtdemux, "could not parse date string '%s'", s);
}
g_free (s);
}
}
}
static void
qtdemux_tag_add_gnre (GstQTDemux * qtdemux, const char *tag, const char *dummy,
GNode * node)
{
GNode *data;
data = qtdemux_tree_get_child_by_type (node, FOURCC_data);
/* re-route to normal string tag if major brand says so
* or no data atom and compatible brand suggests so */
if (qtdemux_is_brand_3gp (qtdemux, TRUE) ||
(qtdemux_is_brand_3gp (qtdemux, FALSE) && !data)) {
qtdemux_tag_add_str (qtdemux, tag, dummy, node);
return;
}
if (data) {
guint len, type, n;
len = QT_UINT32 (data->data);
type = QT_UINT32 ((guint8 *) data->data + 8);
if (type == 0x00000000 && len >= 18) {
n = QT_UINT16 ((guint8 *) data->data + 16);
if (n > 0) {
const gchar *genre;
genre = gst_tag_id3_genre_get (n - 1);
if (genre != NULL) {
GST_DEBUG_OBJECT (qtdemux, "adding %d [%s]", n, genre);
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE,
tag, genre, NULL);
}
}
}
}
}
typedef void (*GstQTDemuxAddTagFunc) (GstQTDemux * demux,
const char *tag, const char *tag_bis, GNode * node);
static const struct
{
guint32 fourcc;
const gchar *gst_tag;
const gchar *gst_tag_bis;
const GstQTDemuxAddTagFunc func;
} add_funcs[] = {
{
FOURCC__nam, GST_TAG_TITLE, NULL, qtdemux_tag_add_str}, {
FOURCC_titl, GST_TAG_TITLE, NULL, qtdemux_tag_add_str}, {
FOURCC__grp, GST_TAG_ARTIST, NULL, qtdemux_tag_add_str}, {
FOURCC__wrt, GST_TAG_COMPOSER, NULL, qtdemux_tag_add_str}, {
FOURCC__ART, GST_TAG_ARTIST, NULL, qtdemux_tag_add_str}, {
FOURCC_perf, GST_TAG_ARTIST, NULL, qtdemux_tag_add_str}, {
FOURCC_auth, GST_TAG_COMPOSER, NULL, qtdemux_tag_add_str}, {
FOURCC__alb, GST_TAG_ALBUM, NULL, qtdemux_tag_add_str}, {
FOURCC_albm, GST_TAG_ALBUM, NULL, qtdemux_tag_add_str}, {
FOURCC_cprt, GST_TAG_COPYRIGHT, NULL, qtdemux_tag_add_str}, {
FOURCC__cpy, GST_TAG_COPYRIGHT, NULL, qtdemux_tag_add_str}, {
FOURCC__cmt, GST_TAG_COMMENT, NULL, qtdemux_tag_add_str}, {
FOURCC__des, GST_TAG_DESCRIPTION, NULL, qtdemux_tag_add_str}, {
FOURCC_dscp, GST_TAG_DESCRIPTION, NULL, qtdemux_tag_add_str}, {
FOURCC__day, GST_TAG_DATE, NULL, qtdemux_tag_add_date}, {
FOURCC_yrrc, GST_TAG_DATE, NULL, qtdemux_tag_add_year}, {
FOURCC__too, GST_TAG_COMMENT, NULL, qtdemux_tag_add_str}, {
FOURCC__inf, GST_TAG_COMMENT, NULL, qtdemux_tag_add_str}, {
FOURCC_trkn, GST_TAG_TRACK_NUMBER, GST_TAG_TRACK_COUNT, qtdemux_tag_add_num}, {
FOURCC_disk, GST_TAG_ALBUM_VOLUME_NUMBER, GST_TAG_ALBUM_VOLUME_COUNT,
qtdemux_tag_add_num}, {
FOURCC_disc, GST_TAG_ALBUM_VOLUME_NUMBER, GST_TAG_ALBUM_VOLUME_COUNT,
qtdemux_tag_add_num}, {
FOURCC__gen, GST_TAG_GENRE, NULL, qtdemux_tag_add_str}, {
FOURCC_gnre, GST_TAG_GENRE, NULL, qtdemux_tag_add_gnre}, {
FOURCC_tmpo, GST_TAG_BEATS_PER_MINUTE, NULL, qtdemux_tag_add_tmpo}, {
FOURCC_covr, GST_TAG_PREVIEW_IMAGE, NULL, qtdemux_tag_add_covr}, {
FOURCC_kywd, GST_TAG_KEYWORDS, NULL, qtdemux_tag_add_keywords}, {
FOURCC_keyw, GST_TAG_KEYWORDS, NULL, qtdemux_tag_add_str}, {
FOURCC__enc, GST_TAG_ENCODER, NULL, qtdemux_tag_add_str}, {
FOURCC_loci, GST_TAG_GEO_LOCATION_NAME, NULL, qtdemux_tag_add_location}, {
FOURCC_clsf, GST_QT_DEMUX_CLASSIFICATION_TAG, NULL,
qtdemux_tag_add_classification}
};
static void
qtdemux_tag_add_blob (GNode * node, GstQTDemux * demux)
{
gint len;
guint8 *data;
GstBuffer *buf;
gchar *media_type, *style;
GstCaps *caps;
guint i;
guint8 ndata[4];
data = node->data;
len = QT_UINT32 (data);
buf = gst_buffer_new_and_alloc (len);
memcpy (GST_BUFFER_DATA (buf), data, len);
/* heuristic to determine style of tag */
if (QT_FOURCC (data + 4) == FOURCC_____ ||
(len > 8 + 12 && QT_FOURCC (data + 12) == FOURCC_data))
style = "itunes";
else if (demux->major_brand == FOURCC_qt__)
style = "quicktime";
/* fall back to assuming iso/3gp tag style */
else
style = "iso";
/* santize the name for the caps. */
for (i = 0; i < 4; i++) {
guint8 d = data[4 + i];
if (g_ascii_isalnum (d))
ndata[i] = g_ascii_tolower (d);
else
ndata[i] = '_';
}
media_type = g_strdup_printf ("application/x-gst-qt-%c%c%c%c-tag",
ndata[0], ndata[1], ndata[2], ndata[3]);
GST_DEBUG_OBJECT (demux, "media type %s", media_type);
caps = gst_caps_new_simple (media_type, "style", G_TYPE_STRING, style, NULL);
gst_buffer_set_caps (buf, caps);
gst_caps_unref (caps);
g_free (media_type);
GST_DEBUG_OBJECT (demux, "adding private tag; size %d, caps %" GST_PTR_FORMAT,
GST_BUFFER_SIZE (buf), caps);
gst_tag_list_add (demux->tag_list, GST_TAG_MERGE_APPEND,
GST_QT_DEMUX_PRIVATE_TAG, buf, NULL);
gst_buffer_unref (buf);
}
static void
qtdemux_parse_udta (GstQTDemux * qtdemux, GNode * udta)
{
GNode *meta;
GNode *ilst;
GNode *node;
gint i;
meta = qtdemux_tree_get_child_by_type (udta, FOURCC_meta);
if (meta != NULL) {
ilst = qtdemux_tree_get_child_by_type (meta, FOURCC_ilst);
if (ilst == NULL) {
GST_LOG_OBJECT (qtdemux, "no ilst");
return;
}
} else {
ilst = udta;
GST_LOG_OBJECT (qtdemux, "no meta so using udta itself");
}
GST_DEBUG_OBJECT (qtdemux, "new tag list");
qtdemux->tag_list = gst_tag_list_new ();
for (i = 0; i < G_N_ELEMENTS (add_funcs); ++i) {
node = qtdemux_tree_get_child_by_type (ilst, add_funcs[i].fourcc);
if (node) {
add_funcs[i].func (qtdemux, add_funcs[i].gst_tag,
add_funcs[i].gst_tag_bis, node);
g_node_destroy (node);
}
}
/* parsed nodes have been removed, pass along remainder as blob */
g_node_children_foreach (ilst, G_TRAVERSE_ALL,
(GNodeForeachFunc) qtdemux_tag_add_blob, qtdemux);
}
typedef struct
{
GstStructure *structure; /* helper for sort function */
gchar *location;
guint min_req_bitrate;
guint min_req_qt_version;
} GstQtReference;
static gint
qtdemux_redirects_sort_func (gconstpointer a, gconstpointer b)
{
GstQtReference *ref_a = (GstQtReference *) a;
GstQtReference *ref_b = (GstQtReference *) b;
if (ref_b->min_req_qt_version != ref_a->min_req_qt_version)
return ref_b->min_req_qt_version - ref_a->min_req_qt_version;
/* known bitrates go before unknown; higher bitrates go first */
return ref_b->min_req_bitrate - ref_a->min_req_bitrate;
}
/* sort the redirects and post a message for the application.
*/
static void
qtdemux_process_redirects (GstQTDemux * qtdemux, GList * references)
{
GstQtReference *best;
GstStructure *s;
GstMessage *msg;
GValue list_val = { 0, };
GList *l;
g_assert (references != NULL);
references = g_list_sort (references, qtdemux_redirects_sort_func);
best = (GstQtReference *) references->data;
g_value_init (&list_val, GST_TYPE_LIST);
for (l = references; l != NULL; l = l->next) {
GstQtReference *ref = (GstQtReference *) l->data;
GValue struct_val = { 0, };
ref->structure = gst_structure_new ("redirect",
"new-location", G_TYPE_STRING, ref->location, NULL);
if (ref->min_req_bitrate > 0) {
gst_structure_set (ref->structure, "minimum-bitrate", G_TYPE_INT,
ref->min_req_bitrate, NULL);
}
g_value_init (&struct_val, GST_TYPE_STRUCTURE);
g_value_set_boxed (&struct_val, ref->structure);
gst_value_list_append_value (&list_val, &struct_val);
g_value_unset (&struct_val);
/* don't free anything here yet, since we need best->structure below */
}
g_assert (best != NULL);
s = gst_structure_copy (best->structure);
if (g_list_length (references) > 1) {
gst_structure_set_value (s, "locations", &list_val);
}
g_value_unset (&list_val);
for (l = references; l != NULL; l = l->next) {
GstQtReference *ref = (GstQtReference *) l->data;
gst_structure_free (ref->structure);
g_free (ref->location);
g_free (ref);
}
g_list_free (references);
GST_INFO_OBJECT (qtdemux, "posting redirect message: %" GST_PTR_FORMAT, s);
msg = gst_message_new_element (GST_OBJECT_CAST (qtdemux), s);
gst_element_post_message (GST_ELEMENT_CAST (qtdemux), msg);
}
/* look for redirect nodes, collect all redirect information and
* process it.
*/
static gboolean
qtdemux_parse_redirects (GstQTDemux * qtdemux)
{
GNode *rmra, *rmda, *rdrf;
rmra = qtdemux_tree_get_child_by_type (qtdemux->moov_node, FOURCC_rmra);
if (rmra) {
GList *redirects = NULL;
rmda = qtdemux_tree_get_child_by_type (rmra, FOURCC_rmda);
while (rmda) {
GstQtReference ref = { NULL, NULL, 0, 0 };
GNode *rmdr, *rmvc;
if ((rmdr = qtdemux_tree_get_child_by_type (rmda, FOURCC_rmdr))) {
ref.min_req_bitrate = QT_UINT32 ((guint8 *) rmdr->data + 12);
GST_LOG_OBJECT (qtdemux, "data rate atom, required bitrate = %u",
ref.min_req_bitrate);
}
if ((rmvc = qtdemux_tree_get_child_by_type (rmda, FOURCC_rmvc))) {
guint32 package = QT_FOURCC ((guint8 *) rmvc->data + 12);
guint version = QT_UINT32 ((guint8 *) rmvc->data + 16);
#ifndef GST_DISABLE_GST_DEBUG
guint bitmask = QT_UINT32 ((guint8 *) rmvc->data + 20);
#endif
guint check_type = QT_UINT16 ((guint8 *) rmvc->data + 24);
GST_LOG_OBJECT (qtdemux,
"version check atom [%" GST_FOURCC_FORMAT "], version=0x%08x"
", mask=%08x, check_type=%u", GST_FOURCC_ARGS (package), version,
bitmask, check_type);
if (package == FOURCC_qtim && check_type == 0) {
ref.min_req_qt_version = version;
}
}
rdrf = qtdemux_tree_get_child_by_type (rmda, FOURCC_rdrf);
if (rdrf) {
guint32 ref_type;
guint8 *ref_data;
ref_type = QT_FOURCC ((guint8 *) rdrf->data + 12);
ref_data = (guint8 *) rdrf->data + 20;
if (ref_type == FOURCC_alis) {
guint record_len, record_version, fn_len;
/* MacOSX alias record, google for alias-layout.txt */
record_len = QT_UINT16 (ref_data + 4);
record_version = QT_UINT16 (ref_data + 4 + 2);
fn_len = QT_UINT8 (ref_data + 50);
if (record_len > 50 && record_version == 2 && fn_len > 0) {
ref.location = g_strndup ((gchar *) ref_data + 51, fn_len);
}
} else if (ref_type == FOURCC_url_) {
ref.location = g_strdup ((gchar *) ref_data);
} else {
GST_DEBUG_OBJECT (qtdemux,
"unknown rdrf reference type %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (ref_type));
}
if (ref.location != NULL) {
GST_INFO_OBJECT (qtdemux, "New location: %s", ref.location);
redirects = g_list_prepend (redirects, g_memdup (&ref, sizeof (ref)));
} else {
GST_WARNING_OBJECT (qtdemux,
"Failed to extract redirect location from rdrf atom");
}
}
/* look for others */
rmda = qtdemux_tree_get_sibling_by_type (rmda, FOURCC_rmda);
}
if (redirects != NULL) {
qtdemux_process_redirects (qtdemux, redirects);
}
}
return TRUE;
}
static GstTagList *
qtdemux_add_container_format (GstQTDemux * qtdemux, GstTagList * tags)
{
const gchar *fmt;
if (tags == NULL)
tags = gst_tag_list_new ();
if (qtdemux->major_brand == FOURCC_mjp2)
fmt = "Motion JPEG 2000";
else if ((qtdemux->major_brand & 0xffff) == GST_MAKE_FOURCC ('3', 'g', 0, 0))
fmt = "3GP";
else if (qtdemux->major_brand == FOURCC_qt__)
fmt = "Quicktime";
else
fmt = "ISO MP4/M4A";
GST_LOG_OBJECT (qtdemux, "mapped %" GST_FOURCC_FORMAT " to '%s'",
GST_FOURCC_ARGS (qtdemux->major_brand), fmt);
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_CONTAINER_FORMAT,
fmt, NULL);
return tags;
}
/* we have read th complete moov node now.
* This function parses all of the relevant info, creates the traks and
* prepares all data structures for playback
*/
static gboolean
qtdemux_parse_tree (GstQTDemux * qtdemux)
{
GNode *mvhd;
GNode *trak;
GNode *udta;
gint64 duration;
mvhd = qtdemux_tree_get_child_by_type (qtdemux->moov_node, FOURCC_mvhd);
if (mvhd == NULL) {
GST_LOG_OBJECT (qtdemux, "No mvhd node found, looking for redirects.");
return qtdemux_parse_redirects (qtdemux);
}
qtdemux->timescale = QT_UINT32 ((guint8 *) mvhd->data + 20);
qtdemux->duration = QT_UINT32 ((guint8 *) mvhd->data + 24);
GST_INFO_OBJECT (qtdemux, "timescale: %u", qtdemux->timescale);
GST_INFO_OBJECT (qtdemux, "duration: %u", qtdemux->duration);
/* set duration in the segment info */
gst_qtdemux_get_duration (qtdemux, &duration);
gst_segment_set_duration (&qtdemux->segment, GST_FORMAT_TIME, duration);
/* parse all traks */
trak = qtdemux_tree_get_child_by_type (qtdemux->moov_node, FOURCC_trak);
while (trak) {
qtdemux_parse_trak (qtdemux, trak);
/* iterate all siblings */
trak = qtdemux_tree_get_sibling_by_type (trak, FOURCC_trak);
}
gst_element_no_more_pads (GST_ELEMENT_CAST (qtdemux));
/* find and push tags, we do this after adding the pads so we can push the
* tags downstream as well. */
udta = qtdemux_tree_get_child_by_type (qtdemux->moov_node, FOURCC_udta);
if (udta) {
qtdemux_parse_udta (qtdemux, udta);
} else {
GST_LOG_OBJECT (qtdemux, "No udta node found.");
}
qtdemux->tag_list = qtdemux_add_container_format (qtdemux, qtdemux->tag_list);
GST_INFO_OBJECT (qtdemux, "posting global tags: %" GST_PTR_FORMAT,
qtdemux->tag_list);
/* post now, send event on pads later */
gst_element_post_message (GST_ELEMENT (qtdemux),
gst_message_new_tag (GST_OBJECT (qtdemux),
gst_tag_list_copy (qtdemux->tag_list)));
return TRUE;
}
/* taken from ffmpeg */
static unsigned int
get_size (guint8 * ptr, guint8 ** end)
{
int count = 4;
int len = 0;
while (count--) {
int c = *ptr;
ptr++;
len = (len << 7) | (c & 0x7f);
if (!(c & 0x80))
break;
}
if (end)
*end = ptr;
return len;
}
/* this can change the codec originally present in @list */
static void
gst_qtdemux_handle_esds (GstQTDemux * qtdemux, QtDemuxStream * stream,
GNode * esds, GstTagList * list)
{
int len = QT_UINT32 (esds->data);
guint8 *ptr = esds->data;
guint8 *end = ptr + len;
int tag;
guint8 *data_ptr = NULL;
int data_len = 0;
guint8 object_type_id = 0;
char *codec_name = NULL;
GstCaps *caps = NULL;
GST_MEMDUMP_OBJECT (qtdemux, "esds", ptr, len);
ptr += 8;
GST_DEBUG_OBJECT (qtdemux, "version/flags = %08x", QT_UINT32 (ptr));
ptr += 4;
while (ptr < end) {
tag = QT_UINT8 (ptr);
GST_DEBUG_OBJECT (qtdemux, "tag = %02x", tag);
ptr++;
len = get_size (ptr, &ptr);
GST_DEBUG_OBJECT (qtdemux, "len = %d", len);
switch (tag) {
case 0x03:
GST_DEBUG_OBJECT (qtdemux, "ID %04x", QT_UINT16 (ptr));
GST_DEBUG_OBJECT (qtdemux, "priority %04x", QT_UINT8 (ptr + 2));
ptr += 3;
break;
case 0x04:
object_type_id = QT_UINT8 (ptr);
GST_DEBUG_OBJECT (qtdemux, "object_type_id %02x", object_type_id);
GST_DEBUG_OBJECT (qtdemux, "stream_type %02x", QT_UINT8 (ptr + 1));
GST_DEBUG_OBJECT (qtdemux, "buffer_size_db %02x", QT_UINT24 (ptr + 2));
GST_DEBUG_OBJECT (qtdemux, "max bitrate %d", QT_UINT32 (ptr + 5));
GST_DEBUG_OBJECT (qtdemux, "avg bitrate %d", QT_UINT32 (ptr + 9));
ptr += 13;
break;
case 0x05:
GST_MEMDUMP_OBJECT (qtdemux, "data", ptr, len);
data_ptr = ptr;
data_len = len;
ptr += len;
break;
case 0x06:
GST_DEBUG_OBJECT (qtdemux, "data %02x", QT_UINT8 (ptr));
ptr += 1;
break;
default:
GST_ERROR_OBJECT (qtdemux, "parse error");
break;
}
}
/* object_type_id in the esds atom in mp4a and mp4v tells us which codec is
* in use, and should also be used to override some other parameters for some
* codecs. */
switch (object_type_id) {
case 0x20: /* MPEG-4 */
break; /* Nothing special needed here */
case 0x21: /* H.264 */
codec_name = "H.264 / AVC";
caps = gst_caps_new_simple ("video/x-h264", NULL);
break;
case 0x40: /* AAC (any) */
case 0x66: /* AAC Main */
case 0x67: /* AAC LC */
case 0x68: /* AAC SSR */
/* Override channels and rate based on the codec_data, as it's often
* wrong. */
if (data_ptr && data_len >= 2) {
guint channels, rateindex;
int rates[] = { 96000, 88200, 64000, 48000, 44100, 32000,
24000, 22050, 16000, 12000, 11025, 8000
};
channels = (data_ptr[1] & 0x7f) >> 3;
if (channels <= 7) {
stream->n_channels = channels;
}
rateindex = ((data_ptr[0] & 0x7) << 1) | ((data_ptr[1] & 0x80) >> 7);
if (rateindex < sizeof (rates) / sizeof (*rates)) {
stream->rate = rates[rateindex];
}
}
break;
case 0x60: /* MPEG-2, various profiles */
case 0x61:
case 0x62:
case 0x63:
case 0x64:
case 0x65:
codec_name = "MPEG-2 video";
gst_caps_unref (stream->caps);
stream->caps = gst_caps_new_simple ("video/mpeg",
"mpegversion", G_TYPE_INT, 2,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
break;
case 0x69: /* MP3 has two different values, accept either */
case 0x6B:
/* change to mpeg1 layer 3 audio */
gst_caps_set_simple (stream->caps, "layer", G_TYPE_INT, 3,
"mpegversion", G_TYPE_INT, 1, NULL);
codec_name = "MPEG-1 layer 3";
break;
case 0x6A: /* MPEG-1 */
codec_name = "MPEG-1 video";
gst_caps_unref (stream->caps);
stream->caps = gst_caps_new_simple ("video/mpeg",
"mpegversion", G_TYPE_INT, 1,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
break;
case 0x6C: /* MJPEG */
caps = gst_caps_new_simple ("image/jpeg", NULL);
codec_name = "Motion-JPEG";
break;
case 0x6D: /* PNG */
caps = gst_caps_new_simple ("image/png", NULL);
codec_name = "PNG still images";
break;
case 0x6E: /* JPEG2000 */
codec_name = "JPEG-2000";
caps = gst_caps_new_simple ("image/x-j2c", "fields", G_TYPE_INT, 1, NULL);
break;
case 0xA4: /* Dirac */
codec_name = "Dirac";
caps = gst_caps_new_simple ("video/x-dirac", NULL);
break;
case 0xA5: /* AC3 */
codec_name = "AC-3 audio";
caps = gst_caps_new_simple ("audio/x-ac3", NULL);
break;
case 0xE1: /* QCELP */
/* QCELP, the codec_data is a riff tag (little endian) with
* more info (http://ftp.3gpp2.org/TSGC/Working/2003/2003-05-SanDiego/TSG-C-2003-05-San%20Diego/WG1/SWG12/C12-20030512-006%20=%20C12-20030217-015_Draft_Baseline%20Text%20of%20FFMS_R2.doc). */
caps = gst_caps_new_simple ("audio/qcelp", NULL);
codec_name = "QCELP";
break;
default:
break;
}
/* If we have a replacement caps, then change our caps for this stream */
if (caps) {
gst_caps_unref (stream->caps);
stream->caps = caps;
}
if (codec_name && list)
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_AUDIO_CODEC, codec_name, NULL);
/* Add the codec_data attribute to caps, if we have it */
if (data_ptr) {
GstBuffer *buffer;
buffer = gst_buffer_new_and_alloc (data_len);
memcpy (GST_BUFFER_DATA (buffer), data_ptr, data_len);
GST_DEBUG_OBJECT (qtdemux, "setting codec_data from esds");
GST_MEMDUMP_OBJECT (qtdemux, "codec_data from esds", data_ptr, data_len);
gst_caps_set_simple (stream->caps, "codec_data", GST_TYPE_BUFFER,
buffer, NULL);
gst_buffer_unref (buffer);
}
}
#define _codec(name) \
do { \
if (codec_name) { \
*codec_name = g_strdup (name); \
} \
} while (0)
static GstCaps *
qtdemux_video_caps (GstQTDemux * qtdemux, QtDemuxStream * stream,
guint32 fourcc, const guint8 * stsd_data, gchar ** codec_name)
{
GstCaps *caps;
const GstStructure *s;
const gchar *name;
switch (fourcc) {
case GST_MAKE_FOURCC ('p', 'n', 'g', ' '):
_codec ("PNG still images");
caps = gst_caps_new_simple ("image/png", NULL);
break;
case GST_MAKE_FOURCC ('j', 'p', 'e', 'g'):
_codec ("JPEG still images");
caps = gst_caps_new_simple ("image/jpeg", NULL);
break;
case GST_MAKE_FOURCC ('m', 'j', 'p', 'a'):
case GST_MAKE_FOURCC ('A', 'V', 'D', 'J'):
case GST_MAKE_FOURCC ('M', 'J', 'P', 'G'):
_codec ("Motion-JPEG");
caps = gst_caps_new_simple ("image/jpeg", NULL);
break;
case GST_MAKE_FOURCC ('m', 'j', 'p', 'b'):
_codec ("Motion-JPEG format B");
caps = gst_caps_new_simple ("video/x-mjpeg-b", NULL);
break;
case GST_MAKE_FOURCC ('m', 'j', 'p', '2'):
_codec ("JPEG-2000");
/* override to what it should be according to spec, avoid palette_data */
stream->bits_per_sample = 24;
caps = gst_caps_new_simple ("image/x-j2c", "fields", G_TYPE_INT, 1, NULL);
break;
case GST_MAKE_FOURCC ('S', 'V', 'Q', '3'):
_codec ("Sorensen video v.3");
caps = gst_caps_new_simple ("video/x-svq",
"svqversion", G_TYPE_INT, 3, NULL);
break;
case GST_MAKE_FOURCC ('s', 'v', 'q', 'i'):
case GST_MAKE_FOURCC ('S', 'V', 'Q', '1'):
_codec ("Sorensen video v.1");
caps = gst_caps_new_simple ("video/x-svq",
"svqversion", G_TYPE_INT, 1, NULL);
break;
case GST_MAKE_FOURCC ('r', 'a', 'w', ' '):
{
guint16 bps;
_codec ("Raw RGB video");
bps = QT_UINT16 (stsd_data + 98);
/* set common stuff */
caps = gst_caps_new_simple ("video/x-raw-rgb",
"endianness", G_TYPE_INT, G_BYTE_ORDER, "depth", G_TYPE_INT, bps,
NULL);
switch (bps) {
case 15:
gst_caps_set_simple (caps,
"bpp", G_TYPE_INT, 16,
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"red_mask", G_TYPE_INT, 0x7c00,
"green_mask", G_TYPE_INT, 0x03e0,
"blue_mask", G_TYPE_INT, 0x001f, NULL);
break;
case 16:
gst_caps_set_simple (caps,
"bpp", G_TYPE_INT, 16,
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"red_mask", G_TYPE_INT, 0xf800,
"green_mask", G_TYPE_INT, 0x07e0,
"blue_mask", G_TYPE_INT, 0x001f, NULL);
break;
case 24:
gst_caps_set_simple (caps,
"bpp", G_TYPE_INT, 24,
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"red_mask", G_TYPE_INT, 0xff0000,
"green_mask", G_TYPE_INT, 0x00ff00,
"blue_mask", G_TYPE_INT, 0x0000ff, NULL);
break;
case 32:
gst_caps_set_simple (caps,
"bpp", G_TYPE_INT, 32,
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"alpha_mask", G_TYPE_INT, 0xff000000,
"red_mask", G_TYPE_INT, 0x00ff0000,
"green_mask", G_TYPE_INT, 0x0000ff00,
"blue_mask", G_TYPE_INT, 0x000000ff, NULL);
break;
default:
/* unknown */
break;
}
break;
}
case GST_MAKE_FOURCC ('y', 'v', '1', '2'):
_codec ("Raw planar YUV 4:2:0");
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('I', '4', '2', '0'),
NULL);
break;
case GST_MAKE_FOURCC ('y', 'u', 'v', '2'):
case GST_MAKE_FOURCC ('Y', 'u', 'v', '2'):
_codec ("Raw packed YUV 4:2:2");
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'),
NULL);
break;
case GST_MAKE_FOURCC ('2', 'v', 'u', 'y'):
_codec ("Raw packed YUV 4:2:0");
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'),
NULL);
break;
case GST_MAKE_FOURCC ('v', '2', '1', '0'):
_codec ("Raw packed YUV 10-bit 4:2:2");
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('v', '2', '1', '0'),
NULL);
break;
case GST_MAKE_FOURCC ('m', 'p', 'e', 'g'):
case GST_MAKE_FOURCC ('m', 'p', 'g', '1'):
_codec ("MPEG-1 video");
caps = gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 1,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
break;
case GST_MAKE_FOURCC ('h', 'd', 'v', '1'): // HDV 720p30
case GST_MAKE_FOURCC ('h', 'd', 'v', '2'): // HDV 1080i60
case GST_MAKE_FOURCC ('h', 'd', 'v', '3'): // HDV 1080i50
case GST_MAKE_FOURCC ('h', 'd', 'v', '5'): // HDV 720p25
case GST_MAKE_FOURCC ('h', 'd', 'v', '6'): // HDV 1080i60
case GST_MAKE_FOURCC ('m', 'x', '5', 'n'): // MPEG2 IMX NTSC 525/60 50mb/s produced by FCP
case GST_MAKE_FOURCC ('m', 'x', '5', 'p'): // MPEG2 IMX PAL 625/60 50mb/s produced by FCP
case GST_MAKE_FOURCC ('m', 'x', '4', 'n'): // MPEG2 IMX NTSC 525/60 40mb/s produced by FCP
case GST_MAKE_FOURCC ('m', 'x', '4', 'p'): // MPEG2 IMX PAL 625/60 40mb/s produced by FCP
case GST_MAKE_FOURCC ('m', 'x', '3', 'n'): // MPEG2 IMX NTSC 525/60 30mb/s produced by FCP
case GST_MAKE_FOURCC ('m', 'x', '3', 'p'): // MPEG2 IMX PAL 625/50 30mb/s produced by FCP
case GST_MAKE_FOURCC ('x', 'd', 'v', '2'): // XDCAM HD 1080i60
case GST_MAKE_FOURCC ('A', 'V', 'm', 'p'): // AVID IMX PAL
case GST_MAKE_FOURCC ('m', 'p', 'g', '2'): // AVID IMX PAL
_codec ("MPEG-2 video");
caps = gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 2,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
break;
case GST_MAKE_FOURCC ('g', 'i', 'f', ' '):
_codec ("GIF still images");
caps = gst_caps_new_simple ("image/gif", NULL);
break;
case GST_MAKE_FOURCC ('h', '2', '6', '3'):
case GST_MAKE_FOURCC ('H', '2', '6', '3'):
case GST_MAKE_FOURCC ('s', '2', '6', '3'):
case GST_MAKE_FOURCC ('U', '2', '6', '3'):
_codec ("H.263");
/* ffmpeg uses the height/width props, don't know why */
caps = gst_caps_new_simple ("video/x-h263", NULL);
break;
case GST_MAKE_FOURCC ('m', 'p', '4', 'v'):
_codec ("MPEG-4 video");
caps = gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 4,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
break;
case GST_MAKE_FOURCC ('3', 'i', 'v', 'd'):
case GST_MAKE_FOURCC ('3', 'I', 'V', 'D'):
_codec ("Microsoft MPEG-4 4.3"); /* FIXME? */
caps = gst_caps_new_simple ("video/x-msmpeg",
"msmpegversion", G_TYPE_INT, 43, NULL);
break;
case GST_MAKE_FOURCC ('3', 'I', 'V', '1'):
case GST_MAKE_FOURCC ('3', 'I', 'V', '2'):
_codec ("3ivX video");
caps = gst_caps_new_simple ("video/x-3ivx", NULL);
break;
case GST_MAKE_FOURCC ('D', 'I', 'V', '3'):
_codec ("DivX 3");
caps = gst_caps_new_simple ("video/x-divx",
"divxversion", G_TYPE_INT, 3, NULL);
break;
case GST_MAKE_FOURCC ('D', 'I', 'V', 'X'):
case GST_MAKE_FOURCC ('d', 'i', 'v', 'x'):
_codec ("DivX 4");
caps = gst_caps_new_simple ("video/x-divx",
"divxversion", G_TYPE_INT, 4, NULL);
break;
case GST_MAKE_FOURCC ('D', 'X', '5', '0'):
_codec ("DivX 5");
caps = gst_caps_new_simple ("video/x-divx",
"divxversion", G_TYPE_INT, 5, NULL);
break;
case GST_MAKE_FOURCC ('X', 'V', 'I', 'D'):
case GST_MAKE_FOURCC ('x', 'v', 'i', 'd'):
_codec ("XVID MPEG-4");
caps = gst_caps_new_simple ("video/x-xvid", NULL);
break;
case GST_MAKE_FOURCC ('F', 'M', 'P', '4'):
case GST_MAKE_FOURCC ('U', 'M', 'P', '4'):
caps = gst_caps_new_simple ("video/mpeg",
"mpegversion", G_TYPE_INT, 4, NULL);
if (codec_name)
*codec_name = g_strdup ("FFmpeg MPEG-4");
break;
case GST_MAKE_FOURCC ('c', 'v', 'i', 'd'):
_codec ("Cinepak");
caps = gst_caps_new_simple ("video/x-cinepak", NULL);
break;
case GST_MAKE_FOURCC ('q', 'd', 'r', 'w'):
_codec ("Apple QuickDraw");
caps = gst_caps_new_simple ("video/x-qdrw", NULL);
break;
case GST_MAKE_FOURCC ('r', 'p', 'z', 'a'):
_codec ("Apple video");
caps = gst_caps_new_simple ("video/x-apple-video", NULL);
break;
case GST_MAKE_FOURCC ('a', 'v', 'c', '1'):
_codec ("H.264 / AVC");
caps = gst_caps_new_simple ("video/x-h264", NULL);
break;
case GST_MAKE_FOURCC ('r', 'l', 'e', ' '):
_codec ("Run-length encoding");
caps = gst_caps_new_simple ("video/x-rle",
"layout", G_TYPE_STRING, "quicktime", NULL);
break;
case GST_MAKE_FOURCC ('i', 'v', '3', '2'):
_codec ("Indeo Video 3");
caps = gst_caps_new_simple ("video/x-indeo",
"indeoversion", G_TYPE_INT, 3, NULL);
break;
case GST_MAKE_FOURCC ('I', 'V', '4', '1'):
case GST_MAKE_FOURCC ('i', 'v', '4', '1'):
_codec ("Intel Video 4");
caps = gst_caps_new_simple ("video/x-indeo",
"indeoversion", G_TYPE_INT, 4, NULL);
break;
case GST_MAKE_FOURCC ('d', 'v', 'c', 'p'):
case GST_MAKE_FOURCC ('d', 'v', 'c', ' '):
case GST_MAKE_FOURCC ('d', 'v', 's', 'd'):
case GST_MAKE_FOURCC ('D', 'V', 'S', 'D'):
case GST_MAKE_FOURCC ('d', 'v', 'c', 's'):
case GST_MAKE_FOURCC ('D', 'V', 'C', 'S'):
case GST_MAKE_FOURCC ('d', 'v', '2', '5'):
case GST_MAKE_FOURCC ('d', 'v', 'p', 'p'):
_codec ("DV Video");
caps = gst_caps_new_simple ("video/x-dv", "dvversion", G_TYPE_INT, 25,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
break;
case GST_MAKE_FOURCC ('d', 'v', '5', 'n'): //DVCPRO50 NTSC
case GST_MAKE_FOURCC ('d', 'v', '5', 'p'): //DVCPRO50 PAL
_codec ("DVCPro50 Video");
caps = gst_caps_new_simple ("video/x-dv", "dvversion", G_TYPE_INT, 50,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
break;
case GST_MAKE_FOURCC ('d', 'v', 'h', '5'): //DVCPRO HD 50i produced by FCP
case GST_MAKE_FOURCC ('d', 'v', 'h', '6'): //DVCPRO HD 60i produced by FCP
_codec ("DVCProHD Video");
caps = gst_caps_new_simple ("video/x-dv", "dvversion", G_TYPE_INT, 100,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
break;
case GST_MAKE_FOURCC ('s', 'm', 'c', ' '):
_codec ("Apple Graphics (SMC)");
caps = gst_caps_new_simple ("video/x-smc", NULL);
break;
case GST_MAKE_FOURCC ('V', 'P', '3', '1'):
_codec ("VP3");
caps = gst_caps_new_simple ("video/x-vp3", NULL);
break;
case GST_MAKE_FOURCC ('X', 'i', 'T', 'h'):
_codec ("Theora");
caps = gst_caps_new_simple ("video/x-theora", NULL);
/* theora uses one byte of padding in the data stream because it does not
* allow 0 sized packets while theora does */
stream->padding = 1;
break;
case GST_MAKE_FOURCC ('d', 'r', 'a', 'c'):
_codec ("Dirac");
caps = gst_caps_new_simple ("video/x-dirac", NULL);
break;
case GST_MAKE_FOURCC ('t', 'i', 'f', 'f'):
_codec ("TIFF still images");
caps = gst_caps_new_simple ("image/tiff", NULL);
break;
case GST_MAKE_FOURCC ('i', 'c', 'o', 'd'):
_codec ("Apple Intermediate Codec");
caps = gst_caps_from_string ("video/x-apple-intermediate-codec");
break;
case GST_MAKE_FOURCC ('A', 'V', 'd', 'n'):
_codec ("AVID DNxHD");
caps = gst_caps_from_string ("video/x-dnxhd");
break;
case GST_MAKE_FOURCC ('k', 'p', 'c', 'd'):
default:
{
char *s;
s = g_strdup_printf ("video/x-gst-fourcc-%" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
caps = gst_caps_new_simple (s, NULL);
break;
}
}
/* enable clipping for raw video streams */
s = gst_caps_get_structure (caps, 0);
name = gst_structure_get_name (s);
if (g_str_has_prefix (name, "video/x-raw-")) {
stream->need_clip = TRUE;
}
return caps;
}
static GstCaps *
qtdemux_audio_caps (GstQTDemux * qtdemux, QtDemuxStream * stream,
guint32 fourcc, const guint8 * data, int len, gchar ** codec_name)
{
GstCaps *caps;
const GstStructure *s;
const gchar *name;
gint endian = 0;
GST_DEBUG_OBJECT (qtdemux, "resolve fourcc %08x", fourcc);
switch (fourcc) {
case GST_MAKE_FOURCC ('N', 'O', 'N', 'E'):
case GST_MAKE_FOURCC ('r', 'a', 'w', ' '):
_codec ("Raw 8-bit PCM audio");
caps = gst_caps_new_simple ("audio/x-raw-int", "width", G_TYPE_INT, 8,
"depth", G_TYPE_INT, 8, "signed", G_TYPE_BOOLEAN, FALSE, NULL);
break;
case GST_MAKE_FOURCC ('t', 'w', 'o', 's'):
endian = G_BIG_ENDIAN;
/* fall-through */
case GST_MAKE_FOURCC ('s', 'o', 'w', 't'):
{
gchar *str;
gint depth;
if (!endian)
endian = G_LITTLE_ENDIAN;
depth = stream->bytes_per_packet * 8;
str = g_strdup_printf ("Raw %d-bit PCM audio", depth);
_codec (str);
g_free (str);
caps = gst_caps_new_simple ("audio/x-raw-int",
"width", G_TYPE_INT, depth, "depth", G_TYPE_INT, depth,
"endianness", G_TYPE_INT, endian,
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
break;
}
case GST_MAKE_FOURCC ('f', 'l', '6', '4'):
_codec ("Raw 64-bit floating-point audio");
caps = gst_caps_new_simple ("audio/x-raw-float", "width", G_TYPE_INT, 64,
"endianness", G_TYPE_INT, G_BIG_ENDIAN, NULL);
break;
case GST_MAKE_FOURCC ('f', 'l', '3', '2'):
_codec ("Raw 32-bit floating-point audio");
caps = gst_caps_new_simple ("audio/x-raw-float", "width", G_TYPE_INT, 32,
"endianness", G_TYPE_INT, G_BIG_ENDIAN, NULL);
break;
case FOURCC_in24:
_codec ("Raw 24-bit PCM audio");
/* we assume BIG ENDIAN, an enda box will tell us to change this to little
* endian later */
caps = gst_caps_new_simple ("audio/x-raw-int", "width", G_TYPE_INT, 24,
"depth", G_TYPE_INT, 24,
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
break;
case GST_MAKE_FOURCC ('i', 'n', '3', '2'):
_codec ("Raw 32-bit PCM audio");
caps = gst_caps_new_simple ("audio/x-raw-int", "width", G_TYPE_INT, 32,
"depth", G_TYPE_INT, 32,
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
break;
case GST_MAKE_FOURCC ('u', 'l', 'a', 'w'):
_codec ("Mu-law audio");
caps = gst_caps_new_simple ("audio/x-mulaw", NULL);
break;
case GST_MAKE_FOURCC ('a', 'l', 'a', 'w'):
_codec ("A-law audio");
caps = gst_caps_new_simple ("audio/x-alaw", NULL);
break;
case 0x0200736d:
case 0x6d730002:
_codec ("Microsoft ADPCM");
/* Microsoft ADPCM-ACM code 2 */
caps = gst_caps_new_simple ("audio/x-adpcm",
"layout", G_TYPE_STRING, "microsoft", NULL);
break;
case 0x1100736d:
case 0x6d730011:
_codec ("IMA Loki SDL MJPEG ADPCM");
/* Loki ADPCM, See #550288 for a file that only decodes
* with the smjpeg variant of the ADPCM decoder. */
caps = gst_caps_new_simple ("audio/x-adpcm",
"layout", G_TYPE_STRING, "smjpeg", NULL);
break;
case 0x1700736d:
case 0x6d730017:
_codec ("DVI/Intel IMA ADPCM");
/* FIXME DVI/Intel IMA ADPCM/ACM code 17 */
caps = gst_caps_new_simple ("audio/x-adpcm",
"layout", G_TYPE_STRING, "quicktime", NULL);
break;
case 0x5500736d:
case 0x6d730055:
/* MPEG layer 3, CBR only (pre QT4.1) */
case GST_MAKE_FOURCC ('.', 'm', 'p', '3'):
_codec ("MPEG-1 layer 3");
/* MPEG layer 3, CBR & VBR (QT4.1 and later) */
caps = gst_caps_new_simple ("audio/mpeg", "layer", G_TYPE_INT, 3,
"mpegversion", G_TYPE_INT, 1, NULL);
break;
case 0x20736d:
case GST_MAKE_FOURCC ('a', 'c', '-', '3'):
_codec ("AC-3 audio");
caps = gst_caps_new_simple ("audio/x-ac3", NULL);
stream->sampled = TRUE;
break;
case GST_MAKE_FOURCC ('M', 'A', 'C', '3'):
_codec ("MACE-3");
caps = gst_caps_new_simple ("audio/x-mace",
"maceversion", G_TYPE_INT, 3, NULL);
break;
case GST_MAKE_FOURCC ('M', 'A', 'C', '6'):
_codec ("MACE-6");
caps = gst_caps_new_simple ("audio/x-mace",
"maceversion", G_TYPE_INT, 6, NULL);
break;
case GST_MAKE_FOURCC ('O', 'g', 'g', 'V'):
/* ogg/vorbis */
caps = gst_caps_new_simple ("application/ogg", NULL);
break;
case GST_MAKE_FOURCC ('d', 'v', 'c', 'a'):
_codec ("DV audio");
caps = gst_caps_new_simple ("audio/x-dv", NULL);
break;
case GST_MAKE_FOURCC ('m', 'p', '4', 'a'):
_codec ("MPEG-4 AAC audio");
caps = gst_caps_new_simple ("audio/mpeg",
"mpegversion", G_TYPE_INT, 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
break;
case GST_MAKE_FOURCC ('Q', 'D', 'M', 'C'):
_codec ("QDesign Music");
caps = gst_caps_new_simple ("audio/x-qdm", NULL);
break;
case GST_MAKE_FOURCC ('Q', 'D', 'M', '2'):
_codec ("QDesign Music v.2");
/* FIXME: QDesign music version 2 (no constant) */
if (data) {
caps = gst_caps_new_simple ("audio/x-qdm2",
"framesize", G_TYPE_INT, QT_UINT32 (data + 52),
"bitrate", G_TYPE_INT, QT_UINT32 (data + 40),
"blocksize", G_TYPE_INT, QT_UINT32 (data + 44), NULL);
} else {
caps = gst_caps_new_simple ("audio/x-qdm2", NULL);
}
break;
case GST_MAKE_FOURCC ('a', 'g', 's', 'm'):
_codec ("GSM audio");
caps = gst_caps_new_simple ("audio/x-gsm", NULL);
break;
case GST_MAKE_FOURCC ('s', 'a', 'm', 'r'):
_codec ("AMR audio");
caps = gst_caps_new_simple ("audio/AMR", NULL);
break;
case GST_MAKE_FOURCC ('s', 'a', 'w', 'b'):
_codec ("AMR-WB audio");
caps = gst_caps_new_simple ("audio/AMR-WB", NULL);
break;
case GST_MAKE_FOURCC ('i', 'm', 'a', '4'):
_codec ("Quicktime IMA ADPCM");
caps = gst_caps_new_simple ("audio/x-adpcm",
"layout", G_TYPE_STRING, "quicktime", NULL);
break;
case GST_MAKE_FOURCC ('a', 'l', 'a', 'c'):
_codec ("Apple lossless audio");
caps = gst_caps_new_simple ("audio/x-alac", NULL);
break;
case GST_MAKE_FOURCC ('Q', 'c', 'l', 'p'):
_codec ("QualComm PureVoice");
caps = gst_caps_from_string ("audio/qcelp");
break;
case GST_MAKE_FOURCC ('q', 't', 'v', 'r'):
/* ? */
default:
{
char *s;
s = g_strdup_printf ("audio/x-gst-fourcc-%" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
caps = gst_caps_new_simple (s, NULL);
break;
}
}
/* enable clipping for raw audio streams */
s = gst_caps_get_structure (caps, 0);
name = gst_structure_get_name (s);
if (g_str_has_prefix (name, "audio/x-raw-")) {
stream->need_clip = TRUE;
}
return caps;
}
static GstCaps *
qtdemux_subp_caps (GstQTDemux * qtdemux, QtDemuxStream * stream,
guint32 fourcc, const guint8 * stsd_data, gchar ** codec_name)
{
GstCaps *caps;
GST_DEBUG_OBJECT (qtdemux, "resolve fourcc %08x", fourcc);
switch (fourcc) {
case GST_MAKE_FOURCC ('m', 'p', '4', 's'):
_codec ("DVD subtitle");
caps = gst_caps_new_simple ("video/x-dvd-subpicture", NULL);
break;
default:
{
char *s;
s = g_strdup_printf ("audio/x-gst-fourcc-%" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
caps = gst_caps_new_simple (s, NULL);
break;
}
}
return caps;
}