mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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dfb55453e4
Original commit message from CVS: * gst-libs/gst/riff/riff-read.c: (gst_riff_read_strf_vids_with_data), (gst_riff_read_strf_auds_with_data): * gst/avi/gstavidemux.c: (gst_avi_demux_handle_src_query), (gst_avi_demux_add_stream), (gst_avi_demux_stream_header): Make sure we don't create 0 sized subbufers in riff-read. Signal the no more pads signal after reading the avi header.
1555 lines
41 KiB
C
1555 lines
41 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* Element-Checklist-Version: 5 */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gst/riff/riff-media.h"
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#include "gstavidemux.h"
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#include "avi-ids.h"
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GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
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#define GST_CAT_DEFAULT avidemux_debug
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/* AviDemux signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_STREAMINFO
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/* FILL ME */
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};
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static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-msvideo")
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);
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static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
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static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
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static void gst_avi_demux_init (GstAviDemux * avi);
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static void gst_avi_demux_reset (GstAviDemux * avi);
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static void gst_avi_demux_loop (GstElement * element);
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static gboolean gst_avi_demux_send_event (GstElement * element,
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GstEvent * event);
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static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
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static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
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static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
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static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
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static gboolean gst_avi_demux_handle_src_query (GstPad * pad,
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GstQueryType type, GstFormat * format, gint64 * value);
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static gboolean gst_avi_demux_src_convert (GstPad * pad,
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GstFormat src_format,
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gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
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static GstElementStateReturn gst_avi_demux_change_state (GstElement * element);
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static void gst_avi_demux_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GstRiffReadClass *parent_class = NULL;
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/*static guint gst_avi_demux_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_avi_demux_get_type (void)
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{
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static GType avi_demux_type = 0;
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if (!avi_demux_type) {
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static const GTypeInfo avi_demux_info = {
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sizeof (GstAviDemuxClass),
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(GBaseInitFunc) gst_avi_demux_base_init,
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NULL,
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(GClassInitFunc) gst_avi_demux_class_init,
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NULL,
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NULL,
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sizeof (GstAviDemux),
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0,
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(GInstanceInitFunc) gst_avi_demux_init,
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};
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avi_demux_type =
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g_type_register_static (GST_TYPE_RIFF_READ,
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"GstAviDemux", &avi_demux_info, 0);
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}
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return avi_demux_type;
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}
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static void
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gst_avi_demux_base_init (GstAviDemuxClass * klass)
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{
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static GstElementDetails gst_avi_demux_details =
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GST_ELEMENT_DETAILS ("Avi demuxer",
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"Codec/Demuxer",
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"Demultiplex an avi file into audio and video",
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"Erik Walthinsen <omega@cse.ogi.edu>\n"
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"Wim Taymans <wim.taymans@chello.be>\n"
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"Ronald Bultje <rbultje@ronald.bitfreak.net>");
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstPadTemplate *videosrctempl, *audiosrctempl;
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GstCaps *audcaps, *vidcaps;
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audcaps = gst_riff_create_audio_template_caps ();
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audiosrctempl = gst_pad_template_new ("audio_%02d",
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GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
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vidcaps = gst_riff_create_video_template_caps ();
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gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
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videosrctempl = gst_pad_template_new ("video_%02d",
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GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
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gst_element_class_add_pad_template (element_class, audiosrctempl);
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gst_element_class_add_pad_template (element_class, videosrctempl);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_templ));
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gst_element_class_set_details (element_class, &gst_avi_demux_details);
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}
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static void
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gst_avi_demux_class_init (GstAviDemuxClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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g_object_class_install_property (gobject_class, ARG_STREAMINFO,
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g_param_spec_boxed ("streaminfo", "Streaminfo", "Streaminfo",
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GST_TYPE_CAPS, G_PARAM_READABLE));
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GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
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0, "Demuxer for AVI streams");
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parent_class = g_type_class_ref (GST_TYPE_RIFF_READ);
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gobject_class->get_property = gst_avi_demux_get_property;
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gstelement_class->change_state = gst_avi_demux_change_state;
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gstelement_class->send_event = gst_avi_demux_send_event;
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}
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static void
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gst_avi_demux_init (GstAviDemux * avi)
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{
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GST_FLAG_SET (avi, GST_ELEMENT_EVENT_AWARE);
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avi->sinkpad =
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gst_pad_new_from_template (gst_static_pad_template_get (&sink_templ),
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"sink");
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gst_element_add_pad (GST_ELEMENT (avi), avi->sinkpad);
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GST_RIFF_READ (avi)->sinkpad = avi->sinkpad;
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gst_element_set_loop_function (GST_ELEMENT (avi), gst_avi_demux_loop);
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gst_avi_demux_reset (avi);
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avi->streaminfo = NULL;
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avi->index_entries = NULL;
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memset (&avi->stream, 0, sizeof (avi->stream));
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}
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static void
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gst_avi_demux_reset (GstAviDemux * avi)
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{
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gint i;
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for (i = 0; i < avi->num_streams; i++) {
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g_free (avi->stream[i].strh);
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gst_element_remove_pad (GST_ELEMENT (avi), avi->stream[i].pad);
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gst_caps_free (avi->stream[i].caps);
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}
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memset (&avi->stream, 0, sizeof (avi->stream));
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avi->num_streams = 0;
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avi->num_v_streams = 0;
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avi->num_a_streams = 0;
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avi->state = GST_AVI_DEMUX_START;
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avi->level_up = 0;
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if (avi->index_entries) {
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g_free (avi->index_entries);
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avi->index_entries = NULL;
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}
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avi->index_size = 0;
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avi->num_frames = 0;
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avi->us_per_frame = 0;
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avi->seek_offset = (guint64) - 1;
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gst_caps_replace (&avi->streaminfo, NULL);
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}
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static void
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gst_avi_demux_streaminfo (GstAviDemux * avi)
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{
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/* compression formats are added later - a bit hacky */
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gst_caps_replace (&avi->streaminfo,
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gst_caps_new_simple ("application/x-gst-streaminfo", NULL));
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/*g_object_notify(G_OBJECT(avi), "streaminfo"); */
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}
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static gst_avi_index_entry *
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gst_avi_demux_index_next (GstAviDemux * avi,
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gint stream_nr, gint start, guint32 flags)
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{
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gint i;
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gst_avi_index_entry *entry = NULL;
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for (i = start; i < avi->index_size; i++) {
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entry = &avi->index_entries[i];
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if (entry->stream_nr == stream_nr && (entry->flags & flags) == flags) {
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break;
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}
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}
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return entry;
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}
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static gst_avi_index_entry *
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gst_avi_demux_index_entry_for_time (GstAviDemux * avi,
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gint stream_nr, guint64 time, guint32 flags)
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{
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gst_avi_index_entry *entry = NULL, *last_entry = NULL;
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gint i;
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i = -1;
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do {
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entry = gst_avi_demux_index_next (avi, stream_nr, i + 1, flags);
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if (!entry)
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return NULL;
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i = entry->index_nr;
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if (entry->ts <= time) {
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last_entry = entry;
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}
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} while (entry->ts <= time);
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return last_entry;
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}
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static gst_avi_index_entry *
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gst_avi_demux_index_entry_for_byte (GstAviDemux * avi,
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gint stream_nr, guint64 byte, guint32 flags)
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{
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gst_avi_index_entry *entry = NULL, *last_entry = NULL;
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gint i;
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i = -1;
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do {
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entry = gst_avi_demux_index_next (avi, stream_nr, i + 1, flags);
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if (!entry)
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return NULL;
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i = entry->index_nr;
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if (entry->bytes_before <= byte) {
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last_entry = entry;
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}
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} while (entry->bytes_before <= byte);
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return last_entry;
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}
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static gst_avi_index_entry *
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gst_avi_demux_index_entry_for_frame (GstAviDemux * avi,
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gint stream_nr, guint32 frame, guint32 flags)
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{
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gst_avi_index_entry *entry = NULL, *last_entry = NULL;
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gint i;
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i = -1;
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do {
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entry = gst_avi_demux_index_next (avi, stream_nr, i + 1, flags);
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if (!entry)
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return NULL;
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i = entry->index_nr;
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if (entry->frames_before <= frame) {
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last_entry = entry;
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}
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} while (entry->frames_before <= frame);
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return last_entry;
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}
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static const GstFormat *
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gst_avi_demux_get_src_formats (GstPad * pad)
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{
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avi_stream_context *stream = gst_pad_get_element_private (pad);
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static const GstFormat src_a_formats[] = {
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GST_FORMAT_TIME,
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GST_FORMAT_BYTES,
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GST_FORMAT_DEFAULT,
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0
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};
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static const GstFormat src_v_formats[] = {
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GST_FORMAT_TIME,
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GST_FORMAT_DEFAULT,
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0
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};
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return (stream->strh->type == GST_RIFF_FCC_auds ?
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src_a_formats : src_v_formats);
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}
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static gboolean
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gst_avi_demux_src_convert (GstPad * pad,
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GstFormat src_format,
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gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
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{
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gboolean res = TRUE;
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/*GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad)); */
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avi_stream_context *stream = gst_pad_get_element_private (pad);
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if (stream->strh->type != GST_RIFF_FCC_auds &&
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(src_format == GST_FORMAT_BYTES || *dest_format == GST_FORMAT_BYTES))
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return FALSE;
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switch (src_format) {
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case GST_FORMAT_TIME:
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switch (*dest_format) {
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case GST_FORMAT_BYTES:
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*dest_value = src_value * stream->strh->rate /
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(stream->strh->scale * GST_SECOND);
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break;
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case GST_FORMAT_DEFAULT:
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*dest_value = src_value * stream->strh->rate /
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(stream->strh->scale * GST_SECOND);
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break;
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default:
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res = FALSE;
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break;
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}
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break;
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case GST_FORMAT_BYTES:
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switch (*dest_format) {
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case GST_FORMAT_TIME:
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*dest_value = ((gfloat) src_value) * GST_SECOND / stream->strh->rate;
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break;
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default:
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res = FALSE;
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break;
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}
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break;
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case GST_FORMAT_DEFAULT:
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switch (*dest_format) {
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case GST_FORMAT_TIME:
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*dest_value = ((((gfloat) src_value) * stream->strh->scale) /
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stream->strh->rate) * GST_SECOND;
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break;
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default:
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res = FALSE;
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break;
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}
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break;
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default:
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res = FALSE;
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}
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return res;
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}
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static const GstQueryType *
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gst_avi_demux_get_src_query_types (GstPad * pad)
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{
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static const GstQueryType src_types[] = {
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GST_QUERY_TOTAL,
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GST_QUERY_POSITION,
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0
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};
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return src_types;
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}
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static gboolean
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gst_avi_demux_handle_src_query (GstPad * pad,
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GstQueryType type, GstFormat * format, gint64 * value)
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{
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gboolean res = TRUE;
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/*GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad)); */
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avi_stream_context *stream = gst_pad_get_element_private (pad);
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switch (type) {
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case GST_QUERY_TOTAL:
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switch (*format) {
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case GST_FORMAT_TIME:
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*value = (((gfloat) stream->strh->scale) * stream->strh->length /
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stream->strh->rate) * GST_SECOND;
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break;
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case GST_FORMAT_BYTES:
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if (stream->strh->type == GST_RIFF_FCC_auds) {
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*value = stream->total_bytes;
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} else
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res = FALSE;
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break;
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case GST_FORMAT_DEFAULT:
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if (stream->strh->type == GST_RIFF_FCC_auds)
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*value = stream->strh->length * stream->strh->samplesize;
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else if (stream->strh->type == GST_RIFF_FCC_vids)
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*value = stream->strh->length;
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else
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res = FALSE;
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break;
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default:
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res = FALSE;
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break;
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}
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break;
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case GST_QUERY_POSITION:
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switch (*format) {
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case GST_FORMAT_TIME:
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if (stream->strh->rate && stream->strh->type == GST_RIFF_FCC_auds) {
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*value = ((gfloat) stream->current_byte) * GST_SECOND /
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stream->strh->rate;
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} else {
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*value = (((gfloat) stream->current_frame) * stream->strh->scale /
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stream->strh->rate) * GST_SECOND;
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}
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break;
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case GST_FORMAT_BYTES:
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*value = stream->current_byte;
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break;
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case GST_FORMAT_DEFAULT:
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if (stream->strh->samplesize &&
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stream->strh->type == GST_RIFF_FCC_auds)
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*value = stream->current_byte * stream->strh->samplesize;
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else
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*value = stream->current_frame;
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break;
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default:
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res = FALSE;
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break;
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}
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break;
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default:
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res = FALSE;
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break;
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}
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return res;
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}
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static GstCaps *
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gst_avi_demux_src_getcaps (GstPad * pad)
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{
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avi_stream_context *stream = gst_pad_get_element_private (pad);
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return gst_caps_copy (stream->caps);
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}
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static gint32
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gst_avi_demux_sync_streams (GstAviDemux * avi, guint64 time)
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{
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gint i;
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guint32 min_index = G_MAXUINT;
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avi_stream_context *stream;
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gst_avi_index_entry *entry;
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for (i = 0; i < avi->num_streams; i++) {
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stream = &avi->stream[i];
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GST_DEBUG ("finding %d for time %" G_GINT64_FORMAT, i, time);
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|
|
entry = gst_avi_demux_index_entry_for_time (avi, stream->num, time,
|
|
GST_RIFF_IF_KEYFRAME);
|
|
if (entry) {
|
|
min_index = MIN (entry->index_nr, min_index);
|
|
}
|
|
}
|
|
GST_DEBUG ("first index at %d", min_index);
|
|
|
|
/* now we know the entry we need to sync on. calculate number of frames to
|
|
* skip fro there on and the stream stats */
|
|
for (i = 0; i < avi->num_streams; i++) {
|
|
gst_avi_index_entry *next_entry;
|
|
|
|
stream = &avi->stream[i];
|
|
|
|
/* next entry */
|
|
next_entry = gst_avi_demux_index_next (avi, stream->num, min_index, 0);
|
|
/* next entry with keyframe */
|
|
entry = gst_avi_demux_index_next (avi, stream->num, min_index,
|
|
GST_RIFF_IF_KEYFRAME);
|
|
|
|
stream->current_byte = next_entry->bytes_before;
|
|
stream->current_frame = next_entry->frames_before;
|
|
stream->skip = entry->frames_before - next_entry->frames_before;
|
|
|
|
GST_DEBUG ("%d skip %d", stream->num, stream->skip);
|
|
}
|
|
|
|
GST_DEBUG ("final index at %d", min_index);
|
|
|
|
return min_index;
|
|
}
|
|
|
|
static gboolean
|
|
gst_avi_demux_send_event (GstElement * element, GstEvent * event)
|
|
{
|
|
const GList *pads;
|
|
|
|
pads = gst_element_get_pad_list (element);
|
|
|
|
while (pads) {
|
|
GstPad *pad = GST_PAD (pads->data);
|
|
|
|
if (GST_PAD_DIRECTION (pad) == GST_PAD_SRC) {
|
|
/* we ref the event here as we might have to try again if the event
|
|
* failed on this pad */
|
|
gst_event_ref (event);
|
|
if (gst_avi_demux_handle_src_event (pad, event)) {
|
|
gst_event_unref (event);
|
|
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
pads = g_list_next (pads);
|
|
}
|
|
|
|
gst_event_unref (event);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static const GstEventMask *
|
|
gst_avi_demux_get_event_mask (GstPad * pad)
|
|
{
|
|
static const GstEventMask masks[] = {
|
|
{GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
|
|
{0,}
|
|
};
|
|
|
|
return masks;
|
|
}
|
|
|
|
static gboolean
|
|
gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
|
|
avi_stream_context *stream;
|
|
|
|
stream = gst_pad_get_element_private (pad);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
GST_DEBUG ("seek format %d, %08x", GST_EVENT_SEEK_FORMAT (event),
|
|
stream->strh->type);
|
|
|
|
switch (GST_EVENT_SEEK_FORMAT (event)) {
|
|
case GST_FORMAT_BYTES:
|
|
case GST_FORMAT_DEFAULT:
|
|
case GST_FORMAT_TIME:{
|
|
gst_avi_index_entry *seek_entry, *entry = NULL;
|
|
gint64 desired_offset = GST_EVENT_SEEK_OFFSET (event);
|
|
guint32 flags;
|
|
guint64 min_index;
|
|
|
|
/* no seek on audio yet */
|
|
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
|
res = FALSE;
|
|
goto done;
|
|
}
|
|
GST_DEBUG ("seeking to %" G_GINT64_FORMAT, desired_offset);
|
|
|
|
flags = GST_RIFF_IF_KEYFRAME;
|
|
switch (GST_EVENT_SEEK_FORMAT (event)) {
|
|
case GST_FORMAT_BYTES:
|
|
entry = gst_avi_demux_index_entry_for_byte (avi, stream->num,
|
|
desired_offset, flags);
|
|
break;
|
|
case GST_FORMAT_DEFAULT:
|
|
entry = gst_avi_demux_index_entry_for_frame (avi, stream->num,
|
|
desired_offset, flags);
|
|
break;
|
|
case GST_FORMAT_TIME:
|
|
entry = gst_avi_demux_index_entry_for_time (avi, stream->num,
|
|
desired_offset, flags);
|
|
break;
|
|
}
|
|
|
|
if (entry) {
|
|
min_index = gst_avi_demux_sync_streams (avi, entry->ts);
|
|
seek_entry = &avi->index_entries[min_index];
|
|
|
|
avi->seek_offset = seek_entry->offset + avi->index_offset;
|
|
avi->last_seek = entry->ts;
|
|
} else {
|
|
GST_DEBUG ("no index entry found for format=%d value=%"
|
|
G_GINT64_FORMAT, GST_EVENT_SEEK_FORMAT (event), desired_offset);
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
done:
|
|
gst_event_unref (event);
|
|
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* "Open" a RIFF file.
|
|
*/
|
|
|
|
gboolean
|
|
gst_avi_demux_stream_init (GstAviDemux * avi)
|
|
{
|
|
GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
guint32 doctype;
|
|
|
|
if (!gst_riff_read_header (riff, &doctype))
|
|
return FALSE;
|
|
if (doctype != GST_RIFF_RIFF_AVI) {
|
|
GST_ELEMENT_ERROR (avi, STREAM, WRONG_TYPE, (NULL), (NULL));
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Read 'avih' header.
|
|
*/
|
|
|
|
gboolean
|
|
gst_avi_demux_stream_avih (GstAviDemux * avi,
|
|
guint32 * flags, guint32 * streams)
|
|
{
|
|
GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
guint32 tag;
|
|
GstBuffer *buf;
|
|
gst_riff_avih avih, *_avih;
|
|
|
|
if (!gst_riff_read_data (riff, &tag, &buf))
|
|
return FALSE;
|
|
|
|
if (tag != GST_RIFF_TAG_avih) {
|
|
g_warning ("Not a avih chunk");
|
|
gst_buffer_unref (buf);
|
|
return FALSE;
|
|
}
|
|
if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih)) {
|
|
g_warning ("Too small avih (%d available, %d needed)",
|
|
GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih));
|
|
gst_buffer_unref (buf);
|
|
return FALSE;
|
|
}
|
|
|
|
_avih = (gst_riff_avih *) GST_BUFFER_DATA (buf);
|
|
avih.us_frame = GUINT32_FROM_LE (_avih->us_frame);
|
|
avih.max_bps = GUINT32_FROM_LE (_avih->max_bps);
|
|
avih.pad_gran = GUINT32_FROM_LE (_avih->pad_gran);
|
|
avih.flags = GUINT32_FROM_LE (_avih->flags);
|
|
avih.tot_frames = GUINT32_FROM_LE (_avih->tot_frames);
|
|
avih.init_frames = GUINT32_FROM_LE (_avih->init_frames);
|
|
avih.streams = GUINT32_FROM_LE (_avih->streams);
|
|
avih.bufsize = GUINT32_FROM_LE (_avih->bufsize);
|
|
avih.width = GUINT32_FROM_LE (_avih->width);
|
|
avih.height = GUINT32_FROM_LE (_avih->height);
|
|
avih.scale = GUINT32_FROM_LE (_avih->scale);
|
|
avih.rate = GUINT32_FROM_LE (_avih->rate);
|
|
avih.start = GUINT32_FROM_LE (_avih->start);
|
|
avih.length = GUINT32_FROM_LE (_avih->length);
|
|
|
|
/* debug stuff */
|
|
GST_INFO ("avih tag found:");
|
|
GST_INFO (" us_frame %u", avih.us_frame);
|
|
GST_INFO (" max_bps %u", avih.max_bps);
|
|
GST_INFO (" pad_gran %u", avih.pad_gran);
|
|
GST_INFO (" flags 0x%08x", avih.flags);
|
|
GST_INFO (" tot_frames %u", avih.tot_frames);
|
|
GST_INFO (" init_frames %u", avih.init_frames);
|
|
GST_INFO (" streams %u", avih.streams);
|
|
GST_INFO (" bufsize %u", avih.bufsize);
|
|
GST_INFO (" width %u", avih.width);
|
|
GST_INFO (" height %u", avih.height);
|
|
GST_INFO (" scale %u", avih.scale);
|
|
GST_INFO (" rate %u", avih.rate);
|
|
GST_INFO (" start %u", avih.start);
|
|
GST_INFO (" length %u", avih.length);
|
|
|
|
avi->num_frames = avih.tot_frames;
|
|
avi->us_per_frame = avih.us_frame;
|
|
*streams = avih.streams;
|
|
*flags = avih.flags;
|
|
|
|
gst_buffer_unref (buf);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Add a stream.
|
|
*/
|
|
|
|
static gboolean
|
|
gst_avi_demux_add_stream (GstAviDemux * avi)
|
|
{
|
|
GstElementClass *klass = GST_ELEMENT_GET_CLASS (avi);
|
|
GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
guint32 tag;
|
|
gst_riff_strh *strh;
|
|
GstBuffer *extradata = NULL, *initdata = NULL;
|
|
gchar *name = NULL, *padname = NULL;
|
|
GstCaps *caps = NULL;
|
|
GstPadTemplate *templ = NULL;
|
|
GstPad *pad;
|
|
avi_stream_context *stream;
|
|
union
|
|
{
|
|
gst_riff_strf_vids *vids;
|
|
gst_riff_strf_auds *auds;
|
|
gst_riff_strf_iavs *iavs;
|
|
}
|
|
strf;
|
|
|
|
/* the stream starts with a 'strh' header */
|
|
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
return FALSE;
|
|
if (tag != GST_RIFF_TAG_strh) {
|
|
g_warning ("Invalid stream header (no strh at begin)");
|
|
goto skip_stream;
|
|
}
|
|
if (!gst_riff_read_strh (riff, &strh))
|
|
return FALSE;
|
|
|
|
/* then comes a 'strf' of that specific type */
|
|
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
return FALSE;
|
|
if (tag != GST_RIFF_TAG_strf) {
|
|
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
("Invalid AVI header (no strf as second tag)"));
|
|
goto skip_stream;
|
|
}
|
|
switch (strh->type) {
|
|
case GST_RIFF_FCC_vids:
|
|
if (!gst_riff_read_strf_vids_with_data (riff, &strf.vids, &extradata))
|
|
return FALSE;
|
|
break;
|
|
case GST_RIFF_FCC_auds:
|
|
if (!gst_riff_read_strf_auds_with_data (riff, &strf.auds, &extradata))
|
|
return FALSE;
|
|
break;
|
|
case GST_RIFF_FCC_iavs:
|
|
if (!gst_riff_read_strf_iavs (riff, &strf.iavs))
|
|
return FALSE;
|
|
break;
|
|
default:
|
|
g_warning ("Unknown stream type " GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (strh->type));
|
|
goto skip_stream;
|
|
}
|
|
|
|
/* read other things */
|
|
while (TRUE) {
|
|
if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
|
|
return FALSE;
|
|
else if (avi->level_up) {
|
|
avi->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (tag) {
|
|
case GST_RIFF_TAG_strd:
|
|
if (initdata)
|
|
gst_buffer_unref (initdata);
|
|
if (!gst_riff_read_data (riff, &tag, &initdata))
|
|
return FALSE;
|
|
break;
|
|
|
|
case GST_RIFF_TAG_strn:
|
|
if (name)
|
|
g_free (name);
|
|
if (!gst_riff_read_ascii (riff, &tag, &name))
|
|
return FALSE;
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING ("Unknown tag " GST_FOURCC_FORMAT " in AVI header",
|
|
GST_FOURCC_ARGS (tag));
|
|
/* fall-through */
|
|
|
|
case GST_RIFF_TAG_JUNK:
|
|
if (!gst_riff_read_skip (riff))
|
|
return FALSE;
|
|
break;
|
|
}
|
|
|
|
if (avi->level_up) {
|
|
avi->level_up--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* create stream name + pad */
|
|
switch (strh->type) {
|
|
case GST_RIFF_FCC_vids:
|
|
{
|
|
char *codec_name = NULL;
|
|
GstTagList *list = gst_tag_list_new ();
|
|
|
|
padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
|
|
templ = gst_element_class_get_pad_template (klass, "video_%02d");
|
|
caps = gst_riff_create_video_caps_with_data (strf.vids->compression,
|
|
strh, strf.vids, extradata, initdata, &codec_name);
|
|
gst_tag_list_add (list, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
|
|
codec_name, NULL);
|
|
gst_element_found_tags (GST_ELEMENT (avi), list);
|
|
gst_tag_list_free (list);
|
|
if (codec_name)
|
|
g_free (codec_name);
|
|
g_free (strf.vids);
|
|
avi->num_v_streams++;
|
|
break;
|
|
}
|
|
case GST_RIFF_FCC_auds:
|
|
{
|
|
char *codec_name = NULL;
|
|
GstTagList *list = gst_tag_list_new ();
|
|
|
|
padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
|
|
templ = gst_element_class_get_pad_template (klass, "audio_%02d");
|
|
caps =
|
|
gst_riff_create_audio_caps_with_data (strf.auds->format, strh,
|
|
strf.auds, extradata, initdata, &codec_name);
|
|
gst_tag_list_add (list, GST_TAG_MERGE_APPEND, GST_TAG_AUDIO_CODEC,
|
|
codec_name, NULL);
|
|
gst_element_found_tags (GST_ELEMENT (avi), list);
|
|
gst_tag_list_free (list);
|
|
if (codec_name)
|
|
g_free (codec_name);
|
|
g_free (strf.auds);
|
|
avi->num_a_streams++;
|
|
break;
|
|
}
|
|
case GST_RIFF_FCC_iavs:
|
|
{
|
|
char *codec_name = NULL;
|
|
GstTagList *list = gst_tag_list_new ();
|
|
|
|
padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
|
|
templ = gst_element_class_get_pad_template (klass, "video_%02d");
|
|
caps = gst_riff_create_iavs_caps (strh->fcc_handler, strh, strf.iavs,
|
|
&codec_name);
|
|
gst_tag_list_add (list, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
|
|
codec_name, NULL);
|
|
gst_element_found_tags (GST_ELEMENT (avi), list);
|
|
gst_tag_list_free (list);
|
|
if (codec_name)
|
|
g_free (codec_name);
|
|
g_free (strf.iavs);
|
|
avi->num_v_streams++;
|
|
break;
|
|
}
|
|
default:
|
|
g_assert (0);
|
|
}
|
|
|
|
/* set proper settings and add it */
|
|
pad = gst_pad_new_from_template (templ, padname);
|
|
g_free (padname);
|
|
|
|
gst_pad_set_formats_function (pad, gst_avi_demux_get_src_formats);
|
|
gst_pad_set_event_mask_function (pad, gst_avi_demux_get_event_mask);
|
|
gst_pad_set_event_function (pad, gst_avi_demux_handle_src_event);
|
|
gst_pad_set_query_type_function (pad, gst_avi_demux_get_src_query_types);
|
|
gst_pad_set_query_function (pad, gst_avi_demux_handle_src_query);
|
|
gst_pad_set_convert_function (pad, gst_avi_demux_src_convert);
|
|
gst_pad_set_getcaps_function (pad, gst_avi_demux_src_getcaps);
|
|
|
|
stream = &avi->stream[avi->num_streams];
|
|
stream->caps = caps ? caps : gst_caps_new_empty ();
|
|
stream->pad = pad;
|
|
stream->strh = strh;
|
|
stream->num = avi->num_streams;
|
|
stream->delay = 0LL;
|
|
stream->total_bytes = 0LL;
|
|
stream->total_frames = 0;
|
|
stream->current_frame = 0;
|
|
stream->current_byte = 0;
|
|
stream->current_entry = -1;
|
|
stream->skip = 0;
|
|
gst_pad_set_element_private (pad, stream);
|
|
avi->num_streams++;
|
|
|
|
/* auto-negotiates */
|
|
gst_element_add_pad (GST_ELEMENT (avi), pad);
|
|
|
|
/* clean something up */
|
|
if (initdata)
|
|
gst_buffer_unref (initdata);
|
|
if (extradata)
|
|
gst_buffer_unref (extradata);
|
|
|
|
return TRUE;
|
|
|
|
skip_stream:
|
|
while (TRUE) {
|
|
if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
|
|
return FALSE;
|
|
if (avi->level_up) {
|
|
avi->level_up--;
|
|
break;
|
|
}
|
|
if (!gst_riff_read_skip (riff))
|
|
return FALSE;
|
|
}
|
|
|
|
/* add a "NULL" stream */
|
|
avi->num_streams++;
|
|
|
|
return TRUE; /* recoverable */
|
|
}
|
|
|
|
/*
|
|
* Read an openDML-2.0 extension header.
|
|
*/
|
|
|
|
static gboolean
|
|
gst_avi_demux_stream_odml (GstAviDemux * avi)
|
|
{
|
|
GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
guint32 tag;
|
|
|
|
/* read contents */
|
|
while (TRUE) {
|
|
if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
|
|
return FALSE;
|
|
else if (avi->level_up) {
|
|
avi->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (tag) {
|
|
case GST_RIFF_TAG_dmlh:{
|
|
gst_riff_dmlh dmlh, *_dmlh;
|
|
GstBuffer *buf;
|
|
|
|
if (!gst_riff_read_data (riff, &tag, &buf))
|
|
return FALSE;
|
|
if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_dmlh)) {
|
|
g_warning ("DMLH entry is too small (%d bytes, %d needed)",
|
|
GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_dmlh));
|
|
gst_buffer_unref (buf);
|
|
break;
|
|
}
|
|
_dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (buf);
|
|
dmlh.totalframes = GUINT32_FROM_LE (_dmlh->totalframes);
|
|
|
|
GST_INFO ("dmlh tag found:");
|
|
GST_INFO (" totalframes: %u", dmlh.totalframes);
|
|
|
|
avi->num_frames = dmlh.totalframes;
|
|
gst_buffer_unref (buf);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
GST_WARNING ("Unknown tag " GST_FOURCC_FORMAT " in AVI header",
|
|
GST_FOURCC_ARGS (tag));
|
|
/* fall-through */
|
|
|
|
case GST_RIFF_TAG_JUNK:
|
|
if (!gst_riff_read_skip (riff))
|
|
return FALSE;
|
|
break;
|
|
}
|
|
|
|
if (avi->level_up) {
|
|
avi->level_up--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Seek to index, read it, seek back.
|
|
*/
|
|
|
|
gboolean
|
|
gst_avi_demux_stream_index (GstAviDemux * avi)
|
|
{
|
|
GstBuffer *buf = NULL;
|
|
guint i;
|
|
GstEvent *event;
|
|
GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
guint64 pos_before, pos_after, length;
|
|
guint32 tag;
|
|
|
|
/* first, we need to know the current position (to seek back
|
|
* when we're done) and the total length of the file. */
|
|
length = gst_bytestream_length (riff->bs);
|
|
pos_before = gst_bytestream_tell (riff->bs);
|
|
|
|
/* skip movi */
|
|
if (!gst_riff_read_skip (riff))
|
|
return FALSE;
|
|
|
|
/* assure that we've got data left */
|
|
pos_after = gst_bytestream_tell (riff->bs);
|
|
if (pos_after + 8 > length) {
|
|
g_warning ("File said that it has an index, but there is no index data!");
|
|
goto end;
|
|
}
|
|
|
|
/* assure that it's an index */
|
|
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
return FALSE;
|
|
if (tag != GST_RIFF_TAG_idx1) {
|
|
g_warning ("No index after data, but " GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (tag));
|
|
goto end;
|
|
}
|
|
|
|
/* read index */
|
|
if (!gst_riff_read_data (riff, &tag, &buf))
|
|
return FALSE;
|
|
|
|
/* parse all entries */
|
|
avi->index_size = GST_BUFFER_SIZE (buf) / sizeof (gst_riff_index_entry);
|
|
avi->index_entries =
|
|
g_malloc (avi->index_size * sizeof (gst_avi_index_entry));
|
|
GST_INFO ("%u index entries", avi->index_size);
|
|
|
|
for (i = 0; i < avi->index_size; i++) {
|
|
gst_riff_index_entry entry, *_entry;
|
|
avi_stream_context *stream;
|
|
gint stream_nr;
|
|
gst_avi_index_entry *target;
|
|
GstFormat format;
|
|
|
|
_entry = &((gst_riff_index_entry *) GST_BUFFER_DATA (buf))[i];
|
|
entry.id = GUINT32_FROM_LE (_entry->id);
|
|
entry.offset = GUINT32_FROM_LE (_entry->offset);
|
|
entry.flags = GUINT32_FROM_LE (_entry->flags);
|
|
entry.size = GUINT32_FROM_LE (_entry->size);
|
|
target = &avi->index_entries[i];
|
|
|
|
if (entry.id == GST_RIFF_rec)
|
|
continue;
|
|
|
|
stream_nr = CHUNKID_TO_STREAMNR (entry.id);
|
|
if (stream_nr >= avi->num_streams || stream_nr < 0) {
|
|
g_warning ("Index entry %d has invalid stream nr %d", i, stream_nr);
|
|
target->stream_nr = -1;
|
|
continue;
|
|
}
|
|
target->stream_nr = stream_nr;
|
|
stream = &avi->stream[stream_nr];
|
|
|
|
target->index_nr = i;
|
|
target->flags = entry.flags;
|
|
target->size = entry.size;
|
|
target->offset = entry.offset;
|
|
|
|
/* figure out if the index is 0 based or relative to the MOVI start */
|
|
if (i == 0) {
|
|
if (target->offset < pos_before)
|
|
avi->index_offset = pos_before + 8;
|
|
else
|
|
avi->index_offset = 0;
|
|
}
|
|
|
|
target->bytes_before = stream->total_bytes;
|
|
target->frames_before = stream->total_frames;
|
|
|
|
format = GST_FORMAT_TIME;
|
|
if (stream->strh->type == GST_RIFF_FCC_auds) {
|
|
/* all audio frames are keyframes */
|
|
target->flags |= GST_RIFF_IF_KEYFRAME;
|
|
}
|
|
|
|
if (stream->strh->samplesize && stream->strh->type == GST_RIFF_FCC_auds) {
|
|
/* constant rate stream */
|
|
gst_pad_convert (stream->pad, GST_FORMAT_BYTES,
|
|
stream->total_bytes, &format, &target->ts);
|
|
} else {
|
|
/* VBR stream */
|
|
gst_pad_convert (stream->pad, GST_FORMAT_DEFAULT,
|
|
stream->total_frames, &format, &target->ts);
|
|
}
|
|
|
|
stream->total_bytes += target->size;
|
|
stream->total_frames++;
|
|
}
|
|
|
|
/* debug our indexes */
|
|
for (i = 0; i < avi->num_streams; i++) {
|
|
avi_stream_context *stream;
|
|
|
|
stream = &avi->stream[i];
|
|
GST_DEBUG ("stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
|
|
i, stream->total_frames, stream->total_bytes);
|
|
}
|
|
|
|
end:
|
|
if (buf)
|
|
gst_buffer_unref (buf);
|
|
|
|
/* seek back to the data */
|
|
if (!(event = gst_riff_read_seek (riff, pos_before)))
|
|
return FALSE;
|
|
gst_event_unref (event);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Scan the file for all chunks to "create" a new index.
|
|
*/
|
|
|
|
gboolean
|
|
gst_avi_demux_stream_scan (GstAviDemux * avi)
|
|
{
|
|
//GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
|
|
/* FIXME */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Read full AVI headers.
|
|
*/
|
|
|
|
gboolean
|
|
gst_avi_demux_stream_header (GstAviDemux * avi)
|
|
{
|
|
GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
guint32 tag, flags, streams;
|
|
|
|
/* the header consists of a 'hdrl' LIST tag */
|
|
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
return FALSE;
|
|
if (tag != GST_RIFF_TAG_LIST) {
|
|
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
("Invalid AVI header (no LIST at start): "
|
|
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
|
return FALSE;
|
|
}
|
|
if (!gst_riff_read_list (riff, &tag))
|
|
return FALSE;
|
|
if (tag != GST_RIFF_LIST_hdrl) {
|
|
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
("Invalid AVI header (no hdrl at start): "
|
|
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
|
return FALSE;
|
|
}
|
|
|
|
/* the hdrl starts with a 'avih' header */
|
|
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
return FALSE;
|
|
if (tag != GST_RIFF_TAG_avih) {
|
|
GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
|
|
("Invalid AVI header (no avih at start): "
|
|
GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
|
|
return FALSE;
|
|
}
|
|
if (!gst_avi_demux_stream_avih (avi, &flags, &streams))
|
|
return FALSE;
|
|
|
|
/* now, read the elements from the header until the end */
|
|
while (TRUE) {
|
|
if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
|
|
return FALSE;
|
|
else if (avi->level_up) {
|
|
avi->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (tag) {
|
|
case GST_RIFF_TAG_LIST:
|
|
if (!(tag = gst_riff_peek_list (riff)))
|
|
return FALSE;
|
|
|
|
switch (tag) {
|
|
case GST_RIFF_LIST_strl:
|
|
if (!gst_riff_read_list (riff, &tag) ||
|
|
!gst_avi_demux_add_stream (avi))
|
|
return FALSE;
|
|
break;
|
|
|
|
case GST_RIFF_LIST_odml:
|
|
if (!gst_riff_read_list (riff, &tag) ||
|
|
!gst_avi_demux_stream_odml (avi))
|
|
return FALSE;
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING ("Unknown list " GST_FOURCC_FORMAT " in AVI header",
|
|
GST_FOURCC_ARGS (tag));
|
|
/* fall-through */
|
|
|
|
case GST_RIFF_TAG_JUNK:
|
|
if (!gst_riff_read_skip (riff))
|
|
return FALSE;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING ("Unknown tag " GST_FOURCC_FORMAT " in AVI header",
|
|
GST_FOURCC_ARGS (tag));
|
|
/* fall-through */
|
|
|
|
case GST_RIFF_TAG_JUNK:
|
|
if (!gst_riff_read_skip (riff))
|
|
return FALSE;
|
|
break;
|
|
}
|
|
|
|
if (avi->level_up) {
|
|
avi->level_up--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (avi->num_streams != streams) {
|
|
g_warning ("Stream header mentioned %d streams, but %d available",
|
|
streams, avi->num_streams);
|
|
}
|
|
/* at this point we know all the streams and we can signal the no more
|
|
* pads signal */
|
|
GST_DEBUG ("signaling no more pads");
|
|
gst_element_no_more_pads (GST_ELEMENT (avi));
|
|
|
|
/* we've got streaminfo now */
|
|
g_object_notify (G_OBJECT (avi), "streaminfo");
|
|
|
|
/* Now, find the data (i.e. skip all junk between header and data) */
|
|
while (1) {
|
|
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
return FALSE;
|
|
if (tag != GST_RIFF_TAG_LIST) {
|
|
if (!gst_riff_read_skip (riff))
|
|
return FALSE;
|
|
continue;
|
|
}
|
|
if (!(tag = gst_riff_peek_list (riff)))
|
|
return FALSE;
|
|
if (tag != GST_RIFF_LIST_movi) {
|
|
if (tag == GST_RIFF_LIST_INFO) {
|
|
if (!gst_riff_read_list (riff, &tag) || !gst_riff_read_info (riff))
|
|
return FALSE;
|
|
} else if (!gst_riff_read_skip (riff)) {
|
|
return FALSE;
|
|
}
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* create or read stream index (for seeking) */
|
|
if (flags & GST_RIFF_AVIH_HASINDEX) {
|
|
if (!gst_avi_demux_stream_index (avi))
|
|
return FALSE;
|
|
} else {
|
|
if (!gst_avi_demux_stream_scan (avi))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Handle seek.
|
|
*/
|
|
|
|
static gboolean
|
|
gst_avi_demux_handle_seek (GstAviDemux * avi)
|
|
{
|
|
GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
guint i;
|
|
GstEvent *event;
|
|
|
|
/* FIXME: if we seek in an openDML file, we will have multiple
|
|
* primary levels. Seeking in between those will cause havoc. */
|
|
|
|
if (!(event = gst_riff_read_seek (riff, avi->seek_offset)))
|
|
return FALSE;
|
|
gst_event_unref (event);
|
|
|
|
for (i = 0; i < avi->num_streams; i++) {
|
|
avi_stream_context *stream = &avi->stream[i];
|
|
|
|
if (GST_PAD_IS_USABLE (stream->pad)) {
|
|
event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
|
|
avi->last_seek + stream->delay, NULL);
|
|
gst_pad_push (stream->pad, GST_DATA (event));
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Read data.
|
|
*/
|
|
|
|
gboolean
|
|
gst_avi_demux_stream_data (GstAviDemux * avi)
|
|
{
|
|
GstRiffRead *riff = GST_RIFF_READ (avi);
|
|
guint32 tag;
|
|
guint stream_nr;
|
|
gst_avi_index_entry *entry;
|
|
|
|
if (avi->seek_offset != (guint64) - 1) {
|
|
if (!gst_avi_demux_handle_seek (avi))
|
|
return FALSE;
|
|
avi->seek_offset = (guint64) - 1;
|
|
}
|
|
|
|
/* peek first (for the end of this 'list/movi' section) */
|
|
if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
|
|
return FALSE;
|
|
|
|
/* if we're at top-level, we didn't read the 'movi'
|
|
* list tag yet. This can also be 'AVIX' in case of
|
|
* openDML-2.0 AVI files. Lastly, it might be idx1,
|
|
* in which case we skip it so we come at EOS. */
|
|
while (g_list_length (riff->level) < 2) {
|
|
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
return FALSE;
|
|
|
|
switch (tag) {
|
|
case GST_RIFF_TAG_LIST:
|
|
if (!(tag = gst_riff_peek_list (riff)))
|
|
return FALSE;
|
|
|
|
switch (tag) {
|
|
case GST_RIFF_LIST_AVIX:
|
|
case GST_RIFF_LIST_movi:
|
|
if (!gst_riff_read_list (riff, &tag))
|
|
return FALSE;
|
|
/* we're now going to read buffers! */
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING ("Unknown list " GST_FOURCC_FORMAT " before AVI data",
|
|
GST_FOURCC_ARGS (tag));
|
|
/* fall-through */
|
|
|
|
case GST_RIFF_TAG_JUNK:
|
|
if (!gst_riff_read_skip (riff))
|
|
return FALSE;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING ("Unknown tag " GST_FOURCC_FORMAT " before AVI data",
|
|
GST_FOURCC_ARGS (tag));
|
|
/* fall-through */
|
|
|
|
case GST_RIFF_TAG_idx1:
|
|
case GST_RIFF_TAG_JUNK:
|
|
if (!gst_riff_read_skip (riff))
|
|
return FALSE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* And then, we get the data */
|
|
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
return FALSE;
|
|
|
|
/* Support for rec-list files */
|
|
switch (tag) {
|
|
case GST_RIFF_TAG_LIST:
|
|
if (!(tag = gst_riff_peek_list (riff)))
|
|
return FALSE;
|
|
if (tag == GST_RIFF_rec) {
|
|
/* Simply skip the list */
|
|
if (!gst_riff_read_list (riff, &tag))
|
|
return FALSE;
|
|
if (!(tag = gst_riff_peek_tag (riff, NULL)))
|
|
return FALSE;
|
|
}
|
|
break;
|
|
|
|
case GST_RIFF_TAG_JUNK:
|
|
return gst_riff_read_skip (riff);
|
|
}
|
|
|
|
stream_nr = CHUNKID_TO_STREAMNR (tag);
|
|
if (stream_nr < 0 || stream_nr >= avi->num_streams) {
|
|
/* recoverable */
|
|
g_warning ("Invalid stream ID %d (" GST_FOURCC_FORMAT ")",
|
|
stream_nr, GST_FOURCC_ARGS (tag));
|
|
if (!gst_riff_read_skip (riff))
|
|
return FALSE;
|
|
} else {
|
|
avi_stream_context *stream;
|
|
GstClockTime next_ts;
|
|
GstFormat format;
|
|
GstBuffer *buf;
|
|
|
|
/* get buffer */
|
|
if (!gst_riff_read_data (riff, &tag, &buf))
|
|
return FALSE;
|
|
|
|
/* get time of this buffer */
|
|
stream = &avi->stream[stream_nr];
|
|
entry = gst_avi_demux_index_next (avi, stream_nr,
|
|
stream->current_entry + 1, 0);
|
|
if (entry) {
|
|
stream->current_entry = entry->index_nr;
|
|
if (entry->flags & GST_RIFF_IF_KEYFRAME) {
|
|
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_KEY_UNIT);
|
|
}
|
|
}
|
|
format = GST_FORMAT_TIME;
|
|
gst_pad_query (stream->pad, GST_QUERY_POSITION, &format, &next_ts);
|
|
|
|
/* set delay (if any) */
|
|
if (stream->strh->init_frames == stream->current_frame &&
|
|
stream->delay == 0)
|
|
stream->delay = next_ts;
|
|
|
|
stream->current_frame++;
|
|
stream->current_byte += GST_BUFFER_SIZE (buf);
|
|
|
|
/* should we skip this data? */
|
|
if (stream->skip) {
|
|
stream->skip--;
|
|
gst_buffer_unref (buf);
|
|
} else {
|
|
if (!stream->pad || !GST_PAD_IS_USABLE (stream->pad)) {
|
|
gst_buffer_unref (buf);
|
|
} else {
|
|
GstClockTime dur_ts;
|
|
|
|
GST_BUFFER_TIMESTAMP (buf) = next_ts;
|
|
gst_pad_query (stream->pad, GST_QUERY_POSITION, &format, &dur_ts);
|
|
GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
|
|
|
|
gst_pad_push (stream->pad, GST_DATA (buf));
|
|
}
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_avi_demux_loop (GstElement * element)
|
|
{
|
|
GstAviDemux *avi = GST_AVI_DEMUX (element);
|
|
|
|
switch (avi->state) {
|
|
case GST_AVI_DEMUX_START:
|
|
if (!gst_avi_demux_stream_init (avi))
|
|
return;
|
|
avi->state = GST_AVI_DEMUX_HEADER;
|
|
/* fall-through */
|
|
|
|
case GST_AVI_DEMUX_HEADER:
|
|
if (!gst_avi_demux_stream_header (avi))
|
|
return;
|
|
avi->state = GST_AVI_DEMUX_MOVI;
|
|
/* fall-through */
|
|
|
|
case GST_AVI_DEMUX_MOVI:
|
|
if (!gst_avi_demux_stream_data (avi))
|
|
return;
|
|
break;
|
|
|
|
default:
|
|
g_assert (0);
|
|
}
|
|
}
|
|
|
|
static GstElementStateReturn
|
|
gst_avi_demux_change_state (GstElement * element)
|
|
{
|
|
GstAviDemux *avi = GST_AVI_DEMUX (element);
|
|
|
|
switch (GST_STATE_TRANSITION (element)) {
|
|
case GST_STATE_READY_TO_PAUSED:
|
|
gst_avi_demux_streaminfo (avi);
|
|
break;
|
|
case GST_STATE_PAUSED_TO_READY:
|
|
gst_avi_demux_reset (avi);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (GST_ELEMENT_CLASS (parent_class)->change_state)
|
|
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
|
|
|
|
return GST_STATE_SUCCESS;
|
|
}
|
|
|
|
static void
|
|
gst_avi_demux_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstAviDemux *avi = GST_AVI_DEMUX (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_STREAMINFO:
|
|
g_value_set_boxed (value, avi->streaminfo);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|