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gstreamer/gst/matroska/matroska-demux.c
Sebastian Dröge 04d1c49ef7 gst/matroska/matroska-demux.*: Only parse Tracks, SeekHead and SegmentInfo elements once but allow 
Original commit message from CVS:
* gst/matroska/matroska-demux.c: (gst_matroska_demux_reset),
(gst_matroska_demux_parse_tracks),
(gst_matroska_demux_parse_index), (gst_matroska_demux_parse_info),
(gst_matroska_demux_parse_attachments),
(gst_matroska_demux_parse_chapters),
(gst_matroska_demux_parse_contents_seekentry),
(gst_matroska_demux_loop_stream_parse_id):
* gst/matroska/matroska-demux.h:
Only parse Tracks, SeekHead and SegmentInfo elements once but allow
Tags multiple times. The first ones can appear more than once but must
contain the same content as the first for backup purposes so we ignore
all but the first one. Tags can appear multiple times with different
content.
Jump to all elements except Clusters that are available from a
SeekHead to make it more likely to have all required informations
before getting to the first Clusters.
Add dummy functions for parsing Attachments and Chapters.
2008-06-13 19:07:03 +00:00

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/* GStreamer Matroska muxer/demuxer
* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
* (c) 2006 Tim-Philipp Müller <tim centricular net>
*
* matroska-demux.c: matroska file/stream demuxer
*
* 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.
*/
/* TODO: "Unkown track header" & "Unknown entry": implement if useful
* TODO: dynamic number of tracks without upper bound
* FIXME: uint64 -> int64 overflows!
* FIXME: ignore 0xBF aka. CRC32 elements without warning
* TODO: check CRC32 if present
* FIXME: go out of loops, don't add Track or whatever if something goes wrong
* or required elements are not there
* TODO: there can be a segment after the first segment. Handle like
* chained oggs. Fixes #334082
* TODO: handle gaps better, especially gaps at the start of a track.
* Needs sending of filler segments, closing of segments and
* other magic... Fixes #429322
* TODO: Test samples: http://www.matroska.org/samples/matrix/index.html
* http://samples.mplayerhq.hu/Matroska/
* TODO: check if demuxing is done correct for all codecs according to spec
* TODO: seeking with incomplete or without CUE
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <math.h>
#include <string.h>
/* For AVI compatibility mode
and for fourcc stuff */
#include <gst/riff/riff-read.h>
#include <gst/riff/riff-ids.h>
#include <gst/riff/riff-media.h>
#ifdef HAVE_ZLIB
#include <zlib.h>
#endif
#include "matroska-demux.h"
#include "matroska-ids.h"
GST_DEBUG_CATEGORY_STATIC (matroskademux_debug);
#define GST_CAT_DEFAULT matroskademux_debug
enum
{
ARG_0,
ARG_METADATA,
ARG_STREAMINFO
};
static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-matroska")
);
/* TODO: fill in caps! */
static GstStaticPadTemplate audio_src_templ =
GST_STATIC_PAD_TEMPLATE ("audio_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("ANY")
);
static GstStaticPadTemplate video_src_templ =
GST_STATIC_PAD_TEMPLATE ("video_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("ANY")
);
static GstStaticPadTemplate subtitle_src_templ =
GST_STATIC_PAD_TEMPLATE ("subtitle_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("text/plain; application/x-ssa; application/x-ass; "
"application/x-usf; video/x-dvd-subpicture; "
"application/x-subtitle-unknown")
);
static GstFlowReturn gst_matroska_demux_parse_contents (GstMatroskaDemux *
demux, gboolean * p_run_loop);
/* element functions */
static void gst_matroska_demux_loop (GstPad * pad);
static gboolean gst_matroska_demux_element_send_event (GstElement * element,
GstEvent * event);
/* pad functions */
static gboolean gst_matroska_demux_sink_activate_pull (GstPad * sinkpad,
gboolean active);
static gboolean gst_matroska_demux_sink_activate (GstPad * sinkpad);
static gboolean gst_matroska_demux_handle_seek_event (GstMatroskaDemux * demux,
GstEvent * event);
static gboolean gst_matroska_demux_handle_src_event (GstPad * pad,
GstEvent * event);
static const GstQueryType *gst_matroska_demux_get_src_query_types (GstPad *
pad);
static gboolean gst_matroska_demux_handle_src_query (GstPad * pad,
GstQuery * query);
static GstStateChangeReturn
gst_matroska_demux_change_state (GstElement * element,
GstStateChange transition);
/* caps functions */
static GstCaps *gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext
* videocontext,
const gchar * codec_id, gpointer data, guint size, gchar ** codec_name);
static GstCaps *gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext
* audiocontext,
const gchar * codec_id, gpointer data, guint size, gchar ** codec_name);
static GstCaps
* gst_matroska_demux_subtitle_caps (GstMatroskaTrackSubtitleContext *
subtitlecontext, const gchar * codec_id, gpointer data, guint size);
/* stream methods */
static void gst_matroska_demux_reset (GstElement * element);
GST_BOILERPLATE (GstMatroskaDemux, gst_matroska_demux, GstEbmlRead,
GST_TYPE_EBML_READ);
static void
gst_matroska_demux_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&video_src_templ));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&audio_src_templ));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&subtitle_src_templ));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_templ));
gst_element_class_set_details_simple (element_class, "Matroska demuxer",
"Codec/Demuxer",
"Demuxes a Matroska Stream into video/audio/subtitles",
"Ronald Bultje <rbultje@ronald.bitfreak.net>");
}
static void
gst_matroska_demux_class_init (GstMatroskaDemuxClass * klass)
{
GstElementClass *gstelement_class = (GstElementClass *) klass;;
GST_DEBUG_CATEGORY_INIT (matroskademux_debug, "matroskademux", 0,
"Matroska demuxer");
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_matroska_demux_change_state);
gstelement_class->send_event =
GST_DEBUG_FUNCPTR (gst_matroska_demux_element_send_event);
}
static void
gst_matroska_demux_init (GstMatroskaDemux * demux,
GstMatroskaDemuxClass * klass)
{
gint i;
demux->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
gst_pad_set_activate_function (demux->sinkpad,
GST_DEBUG_FUNCPTR (gst_matroska_demux_sink_activate));
gst_pad_set_activatepull_function (demux->sinkpad,
GST_DEBUG_FUNCPTR (gst_matroska_demux_sink_activate_pull));
gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad);
GST_EBML_READ (demux)->sinkpad = demux->sinkpad;
/* initial stream no. */
for (i = 0; i < GST_MATROSKA_DEMUX_MAX_STREAMS; i++) {
demux->src[i] = NULL;
}
demux->writing_app = NULL;
demux->muxing_app = NULL;
demux->index = NULL;
/* finish off */
gst_matroska_demux_reset (GST_ELEMENT (demux));
}
static void
gst_matroska_track_free (GstMatroskaTrackContext * track)
{
g_free (track->codec_id);
g_free (track->codec_name);
g_free (track->name);
g_free (track->language);
g_free (track->codec_priv);
if (track->encodings != NULL) {
int i;
for (i = 0; i < track->encodings->len; ++i) {
GstMatroskaTrackEncoding *enc = &g_array_index (track->encodings,
GstMatroskaTrackEncoding,
i);
g_free (enc->comp_settings);
}
g_array_free (track->encodings, TRUE);
}
if (track->pending_tags)
gst_tag_list_free (track->pending_tags);
g_free (track);
}
/*
* Returns the aggregated GstFlowReturn.
*/
static GstFlowReturn
gst_matroska_demux_combine_flows (GstMatroskaDemux * demux,
GstMatroskaTrackContext * track, GstFlowReturn ret)
{
guint i;
/* store the value */
track->last_flow = ret;
/* any other error that is not-linked can be returned right away */
if (ret != GST_FLOW_NOT_LINKED)
goto done;
/* only return NOT_LINKED if all other pads returned NOT_LINKED */
for (i = 0; i < GST_MATROSKA_DEMUX_MAX_STREAMS; i++) {
GstMatroskaTrackContext *ostream = demux->src[i];
if (ostream == NULL)
continue;
ret = ostream->last_flow;
/* some other return value (must be SUCCESS but we can return
* other values as well) */
if (ret != GST_FLOW_NOT_LINKED)
goto done;
}
/* if we get here, all other pads were unlinked and we return
* NOT_LINKED then */
done:
GST_LOG_OBJECT (demux, "combined return %s", gst_flow_get_name (ret));
return ret;
}
static void
gst_matroska_demux_reset (GstElement * element)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
guint i;
/* reset input */
demux->state = GST_MATROSKA_DEMUX_STATE_START;
/* clean up existing streams */
for (i = 0; i < GST_MATROSKA_DEMUX_MAX_STREAMS; i++) {
if (demux->src[i] != NULL) {
if (demux->src[i]->pad != NULL) {
gst_element_remove_pad (GST_ELEMENT (demux), demux->src[i]->pad);
}
gst_caps_replace (&demux->src[i]->caps, NULL);
gst_matroska_track_free (demux->src[i]);
demux->src[i] = NULL;
}
}
demux->num_streams = 0;
demux->num_a_streams = 0;
demux->num_t_streams = 0;
demux->num_v_streams = 0;
/* reset media info */
g_free (demux->writing_app);
demux->writing_app = NULL;
g_free (demux->muxing_app);
demux->muxing_app = NULL;
/* reset indexes */
demux->num_indexes = 0;
g_free (demux->index);
demux->index = NULL;
/* reset timers */
demux->clock = NULL;
demux->time_scale = 1000000;
demux->created = G_MININT64;
demux->index_parsed = FALSE;
demux->tracks_parsed = FALSE;
demux->segmentinfo_parsed = FALSE;
gst_segment_init (&demux->segment, GST_FORMAT_TIME);
}
static gint
gst_matroska_demux_stream_from_num (GstMatroskaDemux * demux, guint track_num)
{
guint n;
for (n = 0; n < demux->num_streams; n++) {
if (demux->src[n] != NULL && demux->src[n]->num == track_num) {
return n;
}
}
if (n == demux->num_streams) {
GST_WARNING ("Failed to find corresponding pad for tracknum %d", track_num);
}
return -1;
}
static gint
gst_matroska_demux_encoding_cmp (gconstpointer a, gconstpointer b)
{
const GstMatroskaTrackEncoding *enc_a;
const GstMatroskaTrackEncoding *enc_b;
enc_a = (const GstMatroskaTrackEncoding *) a;
enc_b = (const GstMatroskaTrackEncoding *) b;
/* FIXME: give warning if diff == 0, should be unique! */
return (gint) enc_b->order - (gint) enc_a->order;
}
static GstFlowReturn
gst_matroska_demux_read_track_encodings (GstEbmlRead * ebml,
GstMatroskaDemux * demux, GstMatroskaTrackContext * context)
{
GstFlowReturn ret;
guint32 id;
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
context->encodings =
g_array_sized_new (FALSE, FALSE, sizeof (GstMatroskaTrackEncoding), 1);
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) {
break;
} else if (demux->level_up > 0) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_CONTENTENCODING:{
GstMatroskaTrackEncoding enc = { 0, };
/* Set default values */
enc.scope = 1;
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
break;
}
while (ret == GST_FLOW_OK) {
if ((ret =
gst_ebml_peek_id (ebml, &demux->level_up,
&id)) != GST_FLOW_OK) {
break;
} else if (demux->level_up > 0) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_CONTENTENCODINGORDER:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
/* FIXME: must be unique, check this! */
enc.order = num;
break;
}
case GST_MATROSKA_ID_CONTENTENCODINGSCOPE:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num > 7 && num == 0)
GST_WARNING ("Unknown scope value in contents encoding.");
else
enc.scope = num;
break;
}
case GST_MATROSKA_ID_CONTENTENCODINGTYPE:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num > 1)
GST_WARNING ("Unknown type value in contents encoding.");
else
enc.type = num;
break;
}
case GST_MATROSKA_ID_CONTENTCOMPRESSION:{
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
break;
}
/* FIXME: Might be compressed or encrypted, depending on ContentEncodingScope & 0x4
* and the previous ContentEncodingOrder */
while (ret == GST_FLOW_OK) {
if ((ret =
gst_ebml_peek_id (ebml, &demux->level_up,
&id)) != GST_FLOW_OK) {
break;
} else if (demux->level_up > 0) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_CONTENTCOMPALGO:{
guint64 num;
if ((ret =
gst_ebml_read_uint (ebml, &id,
&num)) != GST_FLOW_OK) {
break;
}
/* FIXME: maybe don't add tracks at all for which we don't
* support the compression algorithm */
if (num > 3)
GST_WARNING ("Unknown value in encoding compalgo.");
else
enc.comp_algo = num;
break;
}
case GST_MATROSKA_ID_CONTENTCOMPSETTINGS:{
guint8 *data;
guint64 size;
if ((ret =
gst_ebml_read_binary (ebml, &id, &data,
&size)) != GST_FLOW_OK) {
break;
}
enc.comp_settings = data;
enc.comp_settings_length = size;
break;
}
default:
GST_WARNING ("Unknown track compression header entry 0x%x"
" - ignoring", id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
break;
}
case GST_MATROSKA_ID_CONTENTENCRYPTION:
GST_WARNING ("Encrypted tracks not yet supported");
/* FIXME: Might be compressed, depending on ContentEncodingScope & 0x4
* and the previous ContentEncodingOrder */
/* FIXME: don't add encrypted tracks at all */
ret = gst_ebml_read_skip (ebml);
break;
default:
GST_WARNING
("Unknown track encoding header entry 0x%x - ignoring", id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
g_array_append_val (context->encodings, enc);
break;
}
default:
GST_WARNING ("Unknown track encodings header entry 0x%x - ignoring",
id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
/* Sort encodings according to their order */
g_array_sort (context->encodings, gst_matroska_demux_encoding_cmp);
return ret;
}
static GstFlowReturn
gst_matroska_demux_add_stream (GstMatroskaDemux * demux)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (demux);
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstMatroskaTrackContext *context;
GstPadTemplate *templ = NULL;
GstCaps *caps = NULL;
gchar *padname = NULL;
GstFlowReturn ret;
guint32 id;
GstTagList *list = NULL;
gchar *codec = NULL;
if (demux->num_streams >= GST_MATROSKA_DEMUX_MAX_STREAMS) {
GST_WARNING ("Maximum number of streams (%d) exceeded, skipping",
GST_MATROSKA_DEMUX_MAX_STREAMS);
return gst_ebml_read_skip (ebml); /* skip-and-continue */
}
/* allocate generic... if we know the type, we'll g_renew()
* with the precise type */
context = g_new0 (GstMatroskaTrackContext, 1);
demux->src[demux->num_streams] = context;
context->index = demux->num_streams;
context->type = 0; /* no type yet */
context->default_duration = 0;
context->pos = 0;
context->set_discont = TRUE;
context->timecodescale = 1.0;
context->flags =
GST_MATROSKA_TRACK_ENABLED | GST_MATROSKA_TRACK_DEFAULT |
GST_MATROSKA_TRACK_LACING;
context->last_flow = GST_FLOW_OK;
demux->num_streams++;
/* start with the master */
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
/* try reading the trackentry headers */
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) {
break;
} else if (demux->level_up > 0) {
demux->level_up--;
break;
}
switch (id) {
/* FIXME: check unique */
/* track number (unique stream ID) */
case GST_MATROSKA_ID_TRACKNUMBER:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num == 0) {
GST_WARNING ("Invalid track number (0) - skipping");
ret = GST_FLOW_ERROR;
break;
}
context->num = num;
break;
}
/* track UID (unique identifier) */
case GST_MATROSKA_ID_TRACKUID:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num == 0) {
GST_WARNING ("Invalid track UID (0) - skipping");
ret = GST_FLOW_ERROR;
break;
}
context->uid = num;
break;
}
/* track type (video, audio, combined, subtitle, etc.) */
case GST_MATROSKA_ID_TRACKTYPE:{
guint64 track_type;
if ((ret = gst_ebml_read_uint (ebml, &id, &track_type)) != GST_FLOW_OK) {
break;
}
if (context->type != 0 && context->type != track_type) {
GST_WARNING
("More than one tracktype defined in a trackentry - skipping");
break;
} else if (track_type < 1 || track_type > 254) {
GST_WARNING ("Invalid track type (%u) - skipping",
(guint) track_type);
break;
}
/* ok, so we're actually going to reallocate this thing */
switch (track_type) {
case GST_MATROSKA_TRACK_TYPE_VIDEO:
gst_matroska_track_init_video_context (&context);
break;
case GST_MATROSKA_TRACK_TYPE_AUDIO:
gst_matroska_track_init_audio_context (&context);
break;
case GST_MATROSKA_TRACK_TYPE_SUBTITLE:
gst_matroska_track_init_subtitle_context (&context);
break;
case GST_MATROSKA_TRACK_TYPE_COMPLEX:
case GST_MATROSKA_TRACK_TYPE_LOGO:
case GST_MATROSKA_TRACK_TYPE_BUTTONS:
case GST_MATROSKA_TRACK_TYPE_CONTROL:
default:
GST_WARNING ("Unknown or unsupported track type %"
G_GUINT64_FORMAT, track_type);
context->type = 0;
break;
}
demux->src[demux->num_streams - 1] = context;
break;
}
/* tracktype specific stuff for video */
case GST_MATROSKA_ID_TRACKVIDEO:{
GstMatroskaTrackVideoContext *videocontext;
if (!gst_matroska_track_init_video_context (&context)) {
GST_WARNING
("trackvideo EBML entry in non-video track - ignoring track");
ret = GST_FLOW_ERROR;
break;
} else if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
break;
}
videocontext = (GstMatroskaTrackVideoContext *) context;
demux->src[demux->num_streams - 1] = context;
while (ret == GST_FLOW_OK) {
if ((ret =
gst_ebml_peek_id (ebml, &demux->level_up,
&id)) != GST_FLOW_OK) {
break;
} else if (demux->level_up > 0) {
demux->level_up--;
break;
}
switch (id) {
/* Should be one level up but some broken muxers write it here. */
case GST_MATROSKA_ID_TRACKDEFAULTDURATION:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num == 0) {
GST_WARNING ("Invalid track default duration (0) - ignoring");
break;
}
context->default_duration = num;
break;
}
/* video framerate */
/* NOTE: This one is here only for backward compatibility.
* Use _TRACKDEFAULDURATION one level up. */
case GST_MATROSKA_ID_VIDEOFRAMERATE:{
gdouble num;
if ((ret = gst_ebml_read_float (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num <= 0.0) {
GST_WARNING ("Invalid video framerate (%lf fps) - ignoring",
num);
break;
}
if (context->default_duration == 0)
context->default_duration =
gst_gdouble_to_guint64 ((gdouble) GST_SECOND * (1.0 / num));
videocontext->default_fps = num;
break;
}
/* width of the size to display the video at */
case GST_MATROSKA_ID_VIDEODISPLAYWIDTH:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num == 0) {
GST_WARNING ("Invalid display width (0) - ignoring");
break;
}
videocontext->display_width = num;
GST_DEBUG ("display_width %" G_GUINT64_FORMAT, num);
break;
}
/* height of the size to display the video at */
case GST_MATROSKA_ID_VIDEODISPLAYHEIGHT:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num == 0) {
GST_WARNING ("Invalid display height (0) - ignoring");
break;
}
videocontext->display_height = num;
GST_DEBUG ("display_height %" G_GUINT64_FORMAT, num);
break;
}
/* width of the video in the file */
case GST_MATROSKA_ID_VIDEOPIXELWIDTH:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num == 0) {
GST_WARNING ("Invalid pixel width (0) - ignoring");
break;
}
videocontext->pixel_width = num;
GST_DEBUG ("pixel_width %" G_GUINT64_FORMAT, num);
break;
}
/* height of the video in the file */
case GST_MATROSKA_ID_VIDEOPIXELHEIGHT:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num == 0) {
GST_WARNING ("Invalid pixel height (0) - ignoring");
break;
}
videocontext->pixel_height = num;
GST_DEBUG ("pixel_height %" G_GUINT64_FORMAT, num);
break;
}
/* whether the video is interlaced */
case GST_MATROSKA_ID_VIDEOFLAGINTERLACED:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num)
context->flags |= GST_MATROSKA_VIDEOTRACK_INTERLACED;
else
context->flags &= ~GST_MATROSKA_VIDEOTRACK_INTERLACED;
break;
}
/* stereo mode (whether the video has two streams, where
* one is for the left eye and the other for the right eye,
* which creates a 3D-like effect) */
case GST_MATROSKA_ID_VIDEOSTEREOMODE:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num != GST_MATROSKA_EYE_MODE_MONO &&
num != GST_MATROSKA_EYE_MODE_LEFT &&
num != GST_MATROSKA_EYE_MODE_RIGHT &&
num != GST_MATROSKA_EYE_MODE_BOTH) {
GST_WARNING ("Unknown eye mode 0x%x - ignoring", (guint) num);
break;
}
videocontext->eye_mode = num;
break;
}
/* aspect ratio behaviour */
case GST_MATROSKA_ID_VIDEOASPECTRATIOTYPE:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num != GST_MATROSKA_ASPECT_RATIO_MODE_FREE &&
num != GST_MATROSKA_ASPECT_RATIO_MODE_KEEP &&
num != GST_MATROSKA_ASPECT_RATIO_MODE_FIXED) {
GST_WARNING ("Unknown aspect ratio mode 0x%x - ignoring",
(guint) num);
break;
}
videocontext->asr_mode = num;
break;
}
/* colourspace (only matters for raw video) fourcc */
case GST_MATROSKA_ID_VIDEOCOLOURSPACE:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num > G_MAXUINT32) {
GST_WARNING ("Invalid video colourspace (%" G_GUINT64_FORMAT
") - ignoring", num);
break;
}
videocontext->fourcc = num;
break;
}
case GST_MATROSKA_ID_VIDEODISPLAYUNIT:
case GST_MATROSKA_ID_VIDEOPIXELCROPBOTTOM:
case GST_MATROSKA_ID_VIDEOPIXELCROPTOP:
case GST_MATROSKA_ID_VIDEOPIXELCROPLEFT:
case GST_MATROSKA_ID_VIDEOPIXELCROPRIGHT:
case GST_MATROSKA_ID_VIDEOGAMMAVALUE:
default:
GST_WARNING ("Unknown video track header entry 0x%x - ignoring",
id);
/* pass-through */
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
break;
}
/* tracktype specific stuff for audio */
case GST_MATROSKA_ID_TRACKAUDIO:{
GstMatroskaTrackAudioContext *audiocontext;
if (!gst_matroska_track_init_audio_context (&context)) {
GST_WARNING
("trackaudio EBML entry in non-audio track - ignoring track");
ret = GST_FLOW_ERROR;
break;
} else if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
break;
}
audiocontext = (GstMatroskaTrackAudioContext *) context;
demux->src[demux->num_streams - 1] = context;
while (ret == GST_FLOW_OK) {
if ((ret =
gst_ebml_peek_id (ebml, &demux->level_up,
&id)) != GST_FLOW_OK) {
break;
} else if (demux->level_up > 0) {
demux->level_up--;
break;
}
switch (id) {
/* samplerate */
case GST_MATROSKA_ID_AUDIOSAMPLINGFREQ:{
gdouble num;
if ((ret = gst_ebml_read_float (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num <= 0.0) {
GST_WARNING ("Invalid audio sample rate (%lf) - ignoring)",
num);
break;
}
if (context->default_duration == 0)
context->default_duration =
gst_gdouble_to_guint64 ((gdouble) GST_SECOND * (1.0 / num));
audiocontext->samplerate = num;
break;
}
/* bitdepth */
case GST_MATROSKA_ID_AUDIOBITDEPTH:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num == 0) {
GST_WARNING ("Invalid audio bit depth (0) - ignoring)");
break;
}
audiocontext->bitdepth = num;
break;
}
/* channels */
case GST_MATROSKA_ID_AUDIOCHANNELS:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num == 0) {
GST_WARNING
("Invalid number of audio channels (0) - ignoring)");
break;
}
audiocontext->channels = num;
break;
}
case GST_MATROSKA_ID_AUDIOCHANNELPOSITIONS:
case GST_MATROSKA_ID_AUDIOOUTPUTSAMPLINGFREQ:
default:
GST_WARNING ("Unknown audio track header entry 0x%x - ignoring",
id);
/* pass-through */
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
break;
}
/* codec identifier */
case GST_MATROSKA_ID_CODECID:{
gchar *text;
if ((ret = gst_ebml_read_ascii (ebml, &id, &text)) != GST_FLOW_OK) {
break;
}
context->codec_id = text;
break;
}
/* codec private data */
case GST_MATROSKA_ID_CODECPRIVATE:{
guint8 *data;
guint64 size;
if ((ret =
gst_ebml_read_binary (ebml, &id, &data,
&size)) != GST_FLOW_OK) {
break;
}
/* TODO: might be compressed or encrypted */
context->codec_priv = data;
context->codec_priv_size = size;
GST_LOG_OBJECT (demux, "%u bytes of codec private data", (guint) size);
break;
}
/* name of the codec */
case GST_MATROSKA_ID_CODECNAME:{
gchar *text;
if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK) {
break;
}
context->codec_name = text;
break;
}
/* name of this track */
case GST_MATROSKA_ID_TRACKNAME:{
gchar *text;
if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK) {
break;
}
context->name = text;
GST_LOG ("stream %d: trackname=%s", context->index, text);
break;
}
/* language (matters for audio/subtitles, mostly) */
case GST_MATROSKA_ID_TRACKLANGUAGE:{
gchar *text;
if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK) {
break;
}
context->language = text;
GST_LOG ("stream %d: language=%s", context->index, text);
/* fre-ca => fre */
if (strlen (context->language) >= 4 && context->language[3] == '-')
context->language[3] = '\0';
break;
}
/* whether this is actually used */
case GST_MATROSKA_ID_TRACKFLAGENABLED:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num)
context->flags |= GST_MATROSKA_TRACK_ENABLED;
else
context->flags &= ~GST_MATROSKA_TRACK_ENABLED;
break;
}
/* whether it's the default for this track type */
case GST_MATROSKA_ID_TRACKFLAGDEFAULT:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num)
context->flags |= GST_MATROSKA_TRACK_DEFAULT;
else
context->flags &= ~GST_MATROSKA_TRACK_DEFAULT;
break;
}
/* whether the track must be used during playback */
case GST_MATROSKA_ID_TRACKFLAGFORCED:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK)
break;
if (num)
context->flags |= GST_MATROSKA_TRACK_FORCED;
else
context->flags &= ~GST_MATROSKA_TRACK_FORCED;
break;
}
/* lacing (like MPEG, where blocks don't end/start on frame
* boundaries) */
case GST_MATROSKA_ID_TRACKFLAGLACING:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num)
context->flags |= GST_MATROSKA_TRACK_LACING;
else
context->flags &= ~GST_MATROSKA_TRACK_LACING;
break;
}
/* default length (in time) of one data block in this track */
case GST_MATROSKA_ID_TRACKDEFAULTDURATION:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num == 0) {
GST_WARNING ("Invalid track default duration (0) - ignoring");
break;
}
context->default_duration = num;
break;
}
case GST_MATROSKA_ID_CONTENTENCODINGS:{
ret = gst_matroska_demux_read_track_encodings (ebml, demux, context);
break;
}
case GST_MATROSKA_ID_TRACKTIMECODESCALE:{
gdouble num;
if ((ret = gst_ebml_read_float (ebml, &id, &num)) != GST_FLOW_OK)
break;
if (num <= 0.0) {
GST_WARNING ("Invalid track time code scale (%lf) - ignoring", num);
break;
}
context->timecodescale = num;
break;
}
default:
GST_WARNING ("Unknown track header entry 0x%x - ignoring", id);
/* pass-through */
/* we ignore these because they're nothing useful (i.e. crap)
* or simply not implemented yet. */
case GST_MATROSKA_ID_TRACKMINCACHE:
case GST_MATROSKA_ID_TRACKMAXCACHE:
case GST_MATROSKA_ID_MAXBLOCKADDITIONID:
case GST_MATROSKA_ID_TRACKATTACHMENTLINK:
case GST_MATROSKA_ID_TRACKOVERLAY:
case GST_MATROSKA_ID_TRACKTRANSLATE:
case GST_MATROSKA_ID_TRACKOFFSET:
case GST_MATROSKA_ID_CODECSETTINGS:
case GST_MATROSKA_ID_CODECINFOURL:
case GST_MATROSKA_ID_CODECDOWNLOADURL:
case GST_MATROSKA_ID_CODECDECODEALL:
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (context->type == 0 || context->codec_id == NULL || ret != GST_FLOW_OK) {
if (ret == GST_FLOW_OK)
GST_WARNING ("Unknown stream/codec in track entry header");
demux->num_streams--;
demux->src[demux->num_streams] = NULL;
if (context) {
gst_matroska_track_free (context);
}
return ret;
}
/* now create the GStreamer connectivity */
switch (context->type) {
case GST_MATROSKA_TRACK_TYPE_VIDEO:{
GstMatroskaTrackVideoContext *videocontext =
(GstMatroskaTrackVideoContext *) context;
padname = g_strdup_printf ("video_%02d", demux->num_v_streams++);
templ = gst_element_class_get_pad_template (klass, "video_%02d");
caps = gst_matroska_demux_video_caps (videocontext,
context->codec_id,
context->codec_priv, context->codec_priv_size, &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);
}
break;
}
case GST_MATROSKA_TRACK_TYPE_AUDIO:{
GstMatroskaTrackAudioContext *audiocontext =
(GstMatroskaTrackAudioContext *) context;
padname = g_strdup_printf ("audio_%02d", demux->num_a_streams++);
templ = gst_element_class_get_pad_template (klass, "audio_%02d");
caps = gst_matroska_demux_audio_caps (audiocontext,
context->codec_id,
context->codec_priv, context->codec_priv_size, &codec);
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);
}
break;
}
case GST_MATROSKA_TRACK_TYPE_SUBTITLE:{
GstMatroskaTrackSubtitleContext *subtitlecontext =
(GstMatroskaTrackSubtitleContext *) context;
padname = g_strdup_printf ("subtitle_%02d", demux->num_t_streams++);
templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
caps = gst_matroska_demux_subtitle_caps (subtitlecontext,
context->codec_id, context->codec_priv, context->codec_priv_size);
break;
}
case GST_MATROSKA_TRACK_TYPE_COMPLEX:
case GST_MATROSKA_TRACK_TYPE_LOGO:
case GST_MATROSKA_TRACK_TYPE_BUTTONS:
case GST_MATROSKA_TRACK_TYPE_CONTROL:
default:
/* we should already have quit by now */
g_assert_not_reached ();
}
if ((context->language == NULL || *context->language == '\0') &&
(context->type == GST_MATROSKA_TRACK_TYPE_AUDIO ||
context->type == GST_MATROSKA_TRACK_TYPE_SUBTITLE)) {
GST_LOG ("stream %d: language=eng (assuming default)", context->index);
context->language = g_strdup ("eng");
}
if (context->language) {
if (!list)
list = gst_tag_list_new ();
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_LANGUAGE_CODE, context->language, NULL);
}
if (caps == NULL) {
GST_WARNING_OBJECT (demux, "could not determine caps for stream with "
"codec_id='%s'", context->codec_id);
switch (context->type) {
case GST_MATROSKA_TRACK_TYPE_VIDEO:
caps = gst_caps_new_simple ("video/x-unknown", NULL);
break;
case GST_MATROSKA_TRACK_TYPE_AUDIO:
caps = gst_caps_new_simple ("audio/x-unknown", NULL);
break;
case GST_MATROSKA_TRACK_TYPE_SUBTITLE:
caps = gst_caps_new_simple ("application/x-subtitle-unknown", NULL);
break;
case GST_MATROSKA_TRACK_TYPE_COMPLEX:
default:
caps = gst_caps_new_simple ("application/x-matroska-unknown", NULL);
break;
}
gst_caps_set_simple (caps, "codec-id", G_TYPE_STRING, context->codec_id,
NULL);
}
/* the pad in here */
context->pad = gst_pad_new_from_template (templ, padname);
context->caps = caps;
gst_pad_set_event_function (context->pad,
GST_DEBUG_FUNCPTR (gst_matroska_demux_handle_src_event));
gst_pad_set_query_type_function (context->pad,
GST_DEBUG_FUNCPTR (gst_matroska_demux_get_src_query_types));
gst_pad_set_query_function (context->pad,
GST_DEBUG_FUNCPTR (gst_matroska_demux_handle_src_query));
GST_INFO_OBJECT (demux, "Adding pad '%s' with caps %" GST_PTR_FORMAT,
padname, caps);
context->pending_tags = list;
gst_pad_use_fixed_caps (context->pad);
gst_pad_set_caps (context->pad, context->caps);
gst_pad_set_active (context->pad, TRUE);
gst_element_add_pad (GST_ELEMENT (demux), context->pad);
g_free (padname);
/* tadaah! */
return ret;
}
static const GstQueryType *
gst_matroska_demux_get_src_query_types (GstPad * pad)
{
static const GstQueryType query_types[] = {
GST_QUERY_POSITION,
GST_QUERY_DURATION,
0
};
return query_types;
}
static gboolean
gst_matroska_demux_handle_src_query (GstPad * pad, GstQuery * query)
{
GstMatroskaDemux *demux;
gboolean res = FALSE;
demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad));
/* FIXME: do queries on the Tracks, not on the Segment.
* Convert between time and frames if we know the duration
* of one frame for the track */
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gst_query_parse_position (query, &format, NULL);
if (format != GST_FORMAT_TIME) {
GST_DEBUG ("only query position on TIME is supported");
break;
}
GST_OBJECT_LOCK (demux);
gst_query_set_position (query, GST_FORMAT_TIME, demux->segment.last_stop);
GST_OBJECT_UNLOCK (demux);
res = TRUE;
break;
}
case GST_QUERY_DURATION:
{
GstFormat format;
gst_query_parse_duration (query, &format, NULL);
if (format != GST_FORMAT_TIME) {
GST_DEBUG ("only query duration on TIME is supported");
break;
}
GST_OBJECT_LOCK (demux);
gst_query_set_duration (query, GST_FORMAT_TIME, demux->segment.duration);
GST_OBJECT_UNLOCK (demux);
res = TRUE;
break;
}
default:
res = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (demux);
return res;
}
static GstMatroskaIndex *
gst_matroskademux_do_index_seek (GstMatroskaDemux * demux, gint64 seek_pos,
gint64 segment_stop, gboolean keyunit)
{
guint entry;
guint n = 0;
if (!demux->num_indexes)
return NULL;
if (keyunit) {
/* find index entry closest to the requested position */
entry = 0;
for (n = 0; n < demux->num_indexes; ++n) {
gdouble d_entry, d_this;
d_entry = fabs (gst_guint64_to_gdouble (demux->index[entry].time) -
gst_guint64_to_gdouble (seek_pos));
d_this = fabs (gst_guint64_to_gdouble (demux->index[n].time) -
gst_guint64_to_gdouble (seek_pos));
if (d_this < d_entry &&
(demux->index[n].time < segment_stop || segment_stop == -1)) {
entry = n;
}
}
} else {
/* find index entry at or before the requested position */
entry = demux->num_indexes - 1;
while (n < demux->num_indexes - 1) {
if ((demux->index[n].time <= seek_pos) &&
(demux->index[n + 1].time > seek_pos)) {
entry = n;
break;
}
n++;
}
}
return &demux->index[entry];
}
/* takes ownership of the passed event! */
static gboolean
gst_matroska_demux_send_event (GstMatroskaDemux * demux, GstEvent * event)
{
gboolean ret = TRUE;
gint i;
g_return_val_if_fail (event != NULL, FALSE);
GST_DEBUG_OBJECT (demux, "Sending event of type %s to all source pads",
GST_EVENT_TYPE_NAME (event));
for (i = 0; i < demux->num_streams; i++) {
GstMatroskaTrackContext *stream;
stream = demux->src[i];
gst_event_ref (event);
gst_pad_push_event (stream->pad, event);
if (stream->pending_tags) {
gst_element_found_tags_for_pad (GST_ELEMENT (demux), stream->pad,
stream->pending_tags);
stream->pending_tags = NULL;
}
}
gst_event_unref (event);
return ret;
}
static gboolean
gst_matroska_demux_element_send_event (GstElement * element, GstEvent * event)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
gboolean res;
g_return_val_if_fail (event != NULL, FALSE);
if (GST_EVENT_TYPE (event) == GST_EVENT_SEEK) {
res = gst_matroska_demux_handle_seek_event (demux, event);
} else {
GST_WARNING ("Unhandled event of type %s", GST_EVENT_TYPE_NAME (event));
res = FALSE;
}
gst_event_unref (event);
return res;
}
static gboolean
gst_matroska_demux_handle_seek_event (GstMatroskaDemux * demux,
GstEvent * event)
{
GstMatroskaIndex *entry;
GstSeekFlags flags;
GstSeekType cur_type, stop_type;
GstFormat format;
GstEvent *newsegment_event;
gboolean flush, keyunit;
gdouble rate;
gint64 cur, stop;
gint64 segment_start, segment_stop;
gint i;
gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur,
&stop_type, &stop);
/* we can only seek on time */
if (format != GST_FORMAT_TIME) {
GST_DEBUG ("Can only seek on TIME");
return FALSE;
}
/* cannot yet do backwards playback */
if (rate <= 0.0) {
GST_DEBUG ("Can only seek with positive rate");
return FALSE;
}
/* check sanity before we start flushing and all that */
if (cur_type == GST_SEEK_TYPE_SET) {
GST_OBJECT_LOCK (demux);
if (!gst_matroskademux_do_index_seek (demux, cur, -1, FALSE)) {
GST_DEBUG ("No matching seek entry in index");
GST_OBJECT_UNLOCK (demux);
return FALSE;
}
GST_DEBUG ("Seek position looks sane");
GST_OBJECT_UNLOCK (demux);
}
flush = !!(flags & GST_SEEK_FLAG_FLUSH);
keyunit = !!(flags & GST_SEEK_FLAG_KEY_UNIT);
if (flush) {
GST_DEBUG ("Starting flush");
gst_pad_push_event (demux->sinkpad, gst_event_new_flush_start ());
gst_matroska_demux_send_event (demux, gst_event_new_flush_start ());
} else {
gst_pad_pause_task (demux->sinkpad);
}
/* now grab the stream lock so that streaming cannot continue, for
* non flushing seeks when the element is in PAUSED this could block
* forever. */
GST_PAD_STREAM_LOCK (demux->sinkpad);
GST_OBJECT_LOCK (demux);
/* if nothing configured, play complete file */
if (!GST_CLOCK_TIME_IS_VALID (cur))
cur = 0;
if (!GST_CLOCK_TIME_IS_VALID (stop))
stop = demux->segment.duration;
/* prevent some calculations and comparisons involving INVALID */
segment_start = demux->segment.start;
segment_stop = demux->segment.stop;
if (!GST_CLOCK_TIME_IS_VALID (segment_start))
segment_start = 0;
if (!GST_CLOCK_TIME_IS_VALID (segment_stop))
segment_stop = demux->segment.duration;
if (cur_type == GST_SEEK_TYPE_SET)
segment_start = cur;
else if (cur_type == GST_SEEK_TYPE_CUR)
segment_start += cur;
if (stop_type == GST_SEEK_TYPE_SET)
segment_stop = stop;
else if (stop_type == GST_SEEK_TYPE_CUR)
segment_stop += stop;
segment_start = CLAMP (segment_start, 0, demux->segment.duration);
segment_stop = CLAMP (segment_stop, 0, demux->segment.duration);
GST_DEBUG ("New segment positions: %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT,
GST_TIME_ARGS (segment_start), GST_TIME_ARGS (segment_stop));
entry = gst_matroskademux_do_index_seek (demux, segment_start,
segment_stop, keyunit);
if (!entry) {
GST_DEBUG ("No matching seek entry in index");
goto seek_error;
}
/* seek (relative to matroska segment) */
if (gst_ebml_read_seek (GST_EBML_READ (demux),
entry->pos + demux->ebml_segment_start) != GST_FLOW_OK) {
GST_DEBUG ("Failed to seek to offset %" G_GUINT64_FORMAT,
entry->pos + demux->ebml_segment_start);
goto seek_error;
}
GST_DEBUG ("Seeked to offset %" G_GUINT64_FORMAT, entry->pos +
demux->ebml_segment_start);
if (keyunit) {
GST_DEBUG ("seek to key unit, adjusting segment start to %"
GST_TIME_FORMAT, GST_TIME_ARGS (entry->time));
segment_start = entry->time;
}
GST_DEBUG ("Committing new seek segment");
demux->segment.rate = rate;
demux->segment.flags = flags;
demux->segment.start = segment_start;
demux->segment.stop = segment_stop;
GST_OBJECT_UNLOCK (demux);
/* notify start of new segment */
if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
GstMessage *msg;
msg = gst_message_new_segment_start (GST_OBJECT (demux),
GST_FORMAT_TIME, demux->segment.start);
gst_element_post_message (GST_ELEMENT (demux), msg);
}
newsegment_event = gst_event_new_new_segment (FALSE, rate,
GST_FORMAT_TIME, segment_start, segment_stop, segment_start);
if (flush) {
GST_DEBUG ("Stopping flush");
gst_pad_push_event (demux->sinkpad, gst_event_new_flush_stop ());
gst_matroska_demux_send_event (demux, gst_event_new_flush_stop ());
} else if (demux->segment_running) {
/* FIXME, the current segment was still running when we performed the
* seek, we need to close the current segment */
GST_DEBUG ("Closing currently running segment");
}
/* send newsegment event to all source pads and update the time */
gst_matroska_demux_send_event (demux, newsegment_event);
for (i = 0; i < demux->num_streams; i++) {
demux->src[i]->pos = entry->time;
demux->src[i]->set_discont = TRUE;
demux->src[i]->last_flow = GST_FLOW_OK;
}
demux->segment.last_stop = entry->time;
/* restart our task since it might have been stopped when we did the
* flush. */
demux->segment_running = TRUE;
gst_pad_start_task (demux->sinkpad, (GstTaskFunction) gst_matroska_demux_loop,
demux->sinkpad);
/* streaming can continue now */
GST_PAD_STREAM_UNLOCK (demux->sinkpad);
return TRUE;
seek_error:
{
/* FIXME: shouldn't we either make it a real error or start the task
* function again so that things can continue from where they left off? */
GST_DEBUG ("Got a seek error");
GST_OBJECT_UNLOCK (demux);
GST_PAD_STREAM_UNLOCK (demux->sinkpad);
return FALSE;
}
}
static gboolean
gst_matroska_demux_handle_src_event (GstPad * pad, GstEvent * event)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad));
gboolean res = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
res = gst_matroska_demux_handle_seek_event (demux, event);
break;
/* events we don't need to handle */
case GST_EVENT_NAVIGATION:
case GST_EVENT_QOS:
res = FALSE;
break;
default:
GST_WARNING ("Unhandled %s event, dropped", GST_EVENT_TYPE_NAME (event));
res = FALSE;
break;
}
gst_object_unref (demux);
gst_event_unref (event);
return res;
}
static GstFlowReturn
gst_matroska_demux_init_stream (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
gchar *doctype;
guint version;
GstFlowReturn ret;
if ((ret = gst_ebml_read_header (ebml, &doctype, &version)) != GST_FLOW_OK)
return ret;
if (!doctype || strcmp (doctype, "matroska") != 0) {
GST_ELEMENT_ERROR (demux, STREAM, WRONG_TYPE, (NULL),
("Input is not a matroska stream (doctype=%s)",
doctype ? doctype : "none"));
g_free (doctype);
return GST_FLOW_ERROR;
}
g_free (doctype);
if (version > 2) {
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
("Demuxer version (2) is too old to read stream version %d", version));
return GST_FLOW_ERROR;
}
/* find segment, must be the next element but search as long as
* we find it anyway */
while (TRUE) {
guint last_level;
if ((ret = gst_ebml_peek_id (ebml, &last_level, &id)) != GST_FLOW_OK) {
GST_DEBUG_OBJECT (demux, "gst_ebml_peek_id() failed!");
return ret;
}
if (id == GST_MATROSKA_ID_SEGMENT)
break;
/* oi! */
GST_WARNING ("Expected a Segment ID (0x%x), but received 0x%x!",
GST_MATROSKA_ID_SEGMENT, id);
if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK)
return ret;
}
/* we now have a EBML segment */
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
GST_DEBUG_OBJECT (demux, "gst_ebml_read_master() failed!");
return ret;
}
/* seeks are from the beginning of the segment,
* after the segment ID/length */
demux->ebml_segment_start = ebml->offset;
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_tracks (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret = GST_FLOW_OK;
guint32 id;
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) {
break;
} else if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* one track within the "all-tracks" header */
case GST_MATROSKA_ID_TRACKENTRY:
ret = gst_matroska_demux_add_stream (demux);
break;
default:
GST_WARNING ("Unknown entry 0x%x in track header", id);
/* fall-through */
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
demux->tracks_parsed = TRUE;
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_index_cuetrack (GstMatroskaDemux * demux,
gboolean prevent_eos, GstMatroskaIndex * idx, guint64 length)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
GstFlowReturn ret;
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
while (TRUE) {
if (prevent_eos && length == ebml->offset)
break;
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* track number */
case GST_MATROSKA_ID_CUETRACK:
{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK)
goto error;
if (num == 0) {
idx->track = -1;
GST_WARNING ("Invalid cue track number (0)");
goto error;
break;
}
idx->track = num;
break;
}
/* position in file */
case GST_MATROSKA_ID_CUECLUSTERPOSITION:
{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK)
goto error;
/* FIXME: may overflow, our seeks, etc are int64 based */
idx->pos = num;
break;
}
default:
GST_WARNING ("Unknown entry 0x%x in CuesTrackPositions", id);
/* fall-through */
case GST_MATROSKA_ID_CUEBLOCKNUMBER:
case GST_MATROSKA_ID_CUECODECSTATE:
case GST_MATROSKA_ID_CUEREFERENCE:
case GST_EBML_ID_VOID:
if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK)
goto error;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return ret;
error:
if (demux->level_up)
demux->level_up--;
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_index_pointentry (GstMatroskaDemux * demux,
gboolean prevent_eos, guint64 length)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstMatroskaIndex idx;
guint32 id;
GstFlowReturn ret;
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
/* in the end, we hope to fill one entry with a
* timestamp, a file position and a tracknum */
idx.pos = (guint64) - 1;
idx.time = (guint64) - 1;
idx.track = (guint16) - 1;
while (ret == GST_FLOW_OK) {
if (prevent_eos && length == ebml->offset)
break;
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* one single index entry ('point') */
case GST_MATROSKA_ID_CUETIME:
{
guint64 time;
if ((ret = gst_ebml_read_uint (ebml, &id, &time)) == GST_FLOW_OK) {
idx.time = time * demux->time_scale;
}
break;
}
/* position in the file + track to which it belongs */
case GST_MATROSKA_ID_CUETRACKPOSITIONS:
{
ret = gst_matroska_demux_parse_index_cuetrack (demux, prevent_eos, &idx,
length);
break;
}
default:
GST_WARNING ("Unknown entry 0x%x in cuespoint index", id);
/* fall-through */
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
/* so let's see if we got what we wanted */
if (idx.pos != (guint64) - 1 &&
idx.time != (guint64) - 1 && idx.track != (guint16) - 1) {
if (demux->num_indexes % 32 == 0) {
/* re-allocate bigger index */
demux->index = g_renew (GstMatroskaIndex, demux->index,
demux->num_indexes + 32);
}
GST_DEBUG_OBJECT (demux, "Index entry: pos=%" G_GUINT64_FORMAT
", time=%" GST_TIME_FORMAT ", track=%u", idx.pos,
GST_TIME_ARGS (idx.time), (guint) idx.track);
demux->index[demux->num_indexes].pos = idx.pos;
demux->index[demux->num_indexes].time = idx.time;
demux->index[demux->num_indexes].track = idx.track;
demux->num_indexes++;
}
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_index (GstMatroskaDemux * demux, gboolean prevent_eos)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
guint64 length = 0;
GstFlowReturn ret = GST_FLOW_OK;
if (prevent_eos) {
length = gst_ebml_read_get_length (ebml);
}
while (ret == GST_FLOW_OK) {
/* We're an element that can be seeked to. If we are, then
* we want to prevent EOS, since that'll kill us. So we cache
* file size and seek until there, and don't call EOS upon os. */
if (prevent_eos && length == ebml->offset)
break;
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* one single index entry ('point') */
case GST_MATROSKA_ID_POINTENTRY:
ret = gst_matroska_demux_parse_index_pointentry (demux, prevent_eos,
length);
break;
default:
GST_WARNING ("Unknown entry 0x%x in cues header", id);
/* fall-through */
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
demux->index_parsed = TRUE;
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_info (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret = GST_FLOW_OK;
guint32 id;
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) {
break;
} else if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* cluster timecode */
case GST_MATROSKA_ID_TIMECODESCALE:{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
demux->time_scale = num;
break;
}
case GST_MATROSKA_ID_DURATION:{
gdouble num;
GstClockTime dur;
if ((ret = gst_ebml_read_float (ebml, &id, &num)) != GST_FLOW_OK) {
break;
}
if (num <= 0.0) {
GST_WARNING ("Invalid duration (%lf) - skipping", num);
break;
}
dur = gst_gdouble_to_guint64 (num *
gst_guint64_to_gdouble (demux->time_scale));
if (GST_CLOCK_TIME_IS_VALID (dur) && dur <= G_MAXINT64)
demux->segment.duration = dur;
break;
}
case GST_MATROSKA_ID_WRITINGAPP:{
gchar *text;
if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK) {
break;
}
demux->writing_app = text;
break;
}
case GST_MATROSKA_ID_MUXINGAPP:{
gchar *text;
if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK) {
break;
}
demux->muxing_app = text;
break;
}
case GST_MATROSKA_ID_DATEUTC:{
gint64 time;
if ((ret = gst_ebml_read_date (ebml, &id, &time)) != GST_FLOW_OK) {
break;
}
demux->created = time;
break;
}
case GST_MATROSKA_ID_SEGMENTUID:
case GST_MATROSKA_ID_SEGMENTFILENAME:
case GST_MATROSKA_ID_PREVUID:
case GST_MATROSKA_ID_PREVFILENAME:
case GST_MATROSKA_ID_NEXTUID:
case GST_MATROSKA_ID_NEXTFILENAME:
case GST_MATROSKA_ID_TITLE:
case GST_MATROSKA_ID_SEGMENTFAMILY:
case GST_MATROSKA_ID_CHAPTERTRANSLATE:{
/* TODO not yet implemented. */
ret = gst_ebml_read_skip (ebml);
break;
}
default:
GST_WARNING ("Unknown entry 0x%x in info header", id);
/* fall-through */
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
demux->segmentinfo_parsed = TRUE;
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_metadata_id_simple_tag (GstMatroskaDemux * demux,
gboolean prevent_eos, guint64 length, GstTagList ** p_taglist)
{
/* FIXME: check if there are more useful mappings */
struct
{
gchar *matroska_tagname;
gchar *gstreamer_tagname;
}
tag_conv[] = {
{
GST_MATROSKA_TAG_ID_TITLE, GST_TAG_TITLE}, {
GST_MATROSKA_TAG_ID_AUTHOR, GST_TAG_ARTIST}, {
GST_MATROSKA_TAG_ID_ALBUM, GST_TAG_ALBUM}, {
GST_MATROSKA_TAG_ID_COMMENTS, GST_TAG_COMMENT}, {
GST_MATROSKA_TAG_ID_BITSPS, GST_TAG_BITRATE}, {
GST_MATROSKA_TAG_ID_BPS, GST_TAG_BITRATE}, {
GST_MATROSKA_TAG_ID_ENCODER, GST_TAG_ENCODER}, {
GST_MATROSKA_TAG_ID_DATE, GST_TAG_DATE}, {
GST_MATROSKA_TAG_ID_ISRC, GST_TAG_ISRC}, {
GST_MATROSKA_TAG_ID_COPYRIGHT, GST_TAG_COPYRIGHT}, {
GST_MATROSKA_TAG_ID_BPM, GST_TAG_BEATS_PER_MINUTE}, {
GST_MATROSKA_TAG_ID_TERMS_OF_USE, GST_TAG_LICENSE}, {
GST_MATROSKA_TAG_ID_COMPOSER, GST_TAG_COMPOSER}, {
GST_MATROSKA_TAG_ID_LEAD_PERFORMER, GST_TAG_PERFORMER}, {
GST_MATROSKA_TAG_ID_GENRE, GST_TAG_GENRE}
};
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret;
guint32 id;
gchar *value = NULL;
gchar *tag = NULL;
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
while (ret == GST_FLOW_OK) {
/* read all sub-entries */
if (prevent_eos && length == ebml->offset)
break;
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_TAGNAME:
g_free (tag);
tag = NULL;
ret = gst_ebml_read_ascii (ebml, &id, &tag);
break;
case GST_MATROSKA_ID_TAGSTRING:
g_free (value);
value = NULL;
ret = gst_ebml_read_utf8 (ebml, &id, &value);
break;
default:
GST_WARNING ("Unknown entry 0x%x in metadata collection", id);
/* fall-through */
case GST_MATROSKA_ID_TAGLANGUAGE:
case GST_MATROSKA_ID_TAGDEFAULT:
case GST_MATROSKA_ID_TAGBINARY:
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (tag && value) {
guint i;
for (i = 0; i < G_N_ELEMENTS (tag_conv); i++) {
const gchar *tagname_gst = tag_conv[i].gstreamer_tagname;
const gchar *tagname_mkv = tag_conv[i].matroska_tagname;
if (strcmp (tagname_mkv, tag) == 0) {
GValue src = { 0, };
GValue dest = { 0, };
GType dest_type = gst_tag_get_type (tagname_gst);
g_value_init (&src, G_TYPE_STRING);
g_value_set_string (&src, value);
g_value_init (&dest, dest_type);
if (g_value_transform (&src, &dest)) {
gst_tag_list_add_values (*p_taglist, GST_TAG_MERGE_APPEND,
tagname_gst, &dest, NULL);
} else {
GST_WARNING_OBJECT (demux, "Can't transform tag '%s' with"
"value '%s' to target type", tag, value);
}
g_value_unset (&src);
g_value_unset (&dest);
break;
}
}
}
g_free (tag);
g_free (value);
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_metadata_id_tag (GstMatroskaDemux * demux,
gboolean prevent_eos, guint64 length, GstTagList ** p_taglist)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
GstFlowReturn ret;
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
while (ret == GST_FLOW_OK) {
/* read all sub-entries */
if (prevent_eos && length == ebml->offset)
break;
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_SIMPLETAG:
ret = gst_matroska_demux_parse_metadata_id_simple_tag (demux,
prevent_eos, length, p_taglist);
break;
default:
GST_WARNING ("Unknown entry 0x%x in metadata collection", id);
/* fall-through */
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_metadata (GstMatroskaDemux * demux,
gboolean prevent_eos)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstTagList *taglist = gst_tag_list_new ();
GstFlowReturn ret = GST_FLOW_OK;
guint64 length = 0;
guint32 id;
/* TODO: review length/eos logic */
if (prevent_eos) {
length = gst_ebml_read_get_length (ebml);
}
while (ret == GST_FLOW_OK) {
/* We're an element that can be seeked to. If we are, then
* we want to prevent EOS, since that'll kill us. So we cache
* file size and seek until there, and don't call EOS upon os. */
if (prevent_eos && length == ebml->offset)
break;
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_TAG:
ret = gst_matroska_demux_parse_metadata_id_tag (demux, prevent_eos,
length, &taglist);
break;
default:
GST_WARNING ("Unknown entry 0x%x in metadata header", id);
/* fall-through */
case GST_EBML_ID_VOID:
/* FIXME: Use to limit the tags to specific pads */
case GST_MATROSKA_ID_TARGETS:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (gst_structure_n_fields (GST_STRUCTURE (taglist)) > 0) {
gst_element_found_tags (GST_ELEMENT (ebml), taglist);
} else {
gst_tag_list_free (taglist);
}
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_attachments (GstMatroskaDemux * demux,
gboolean prevent_eos)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint64 length = 0;
guint32 id;
GstFlowReturn ret = GST_FLOW_OK;
GST_WARNING_OBJECT (demux, "Parsing of attachments not implemented yet");
/* TODO: implement parsing of attachments */
if (prevent_eos) {
length = gst_ebml_read_get_length (ebml);
}
while (ret == GST_FLOW_OK) {
/* We're an element that can be seeked to. If we are, then
* we want to prevent EOS, since that'll kill us. So we cache
* file size and seek until there, and don't call EOS upon os. */
if (prevent_eos && length == ebml->offset)
break;
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
default:
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_chapters (GstMatroskaDemux * demux,
gboolean prevent_eos)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint64 length = 0;
guint32 id;
GstFlowReturn ret = GST_FLOW_OK;
GST_WARNING_OBJECT (demux, "Parsing of chapters not implemented yet");
/* TODO: implement parsing of chapters */
if (prevent_eos) {
length = gst_ebml_read_get_length (ebml);
}
while (ret == GST_FLOW_OK) {
/* We're an element that can be seeked to. If we are, then
* we want to prevent EOS, since that'll kill us. So we cache
* file size and seek until there, and don't call EOS upon os. */
if (prevent_eos && length == ebml->offset)
break;
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
default:
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return ret;
}
/*
* Read signed/unsigned "EBML" numbers.
* Return: number of bytes processed.
*/
static gint
gst_matroska_ebmlnum_uint (guint8 * data, guint size, guint64 * num)
{
gint len_mask = 0x80, read = 1, n = 1, num_ffs = 0;
guint64 total;
if (size <= 0) {
return -1;
}
total = data[0];
while (read <= 8 && !(total & len_mask)) {
read++;
len_mask >>= 1;
}
if (read > 8)
return -1;
if ((total &= (len_mask - 1)) == len_mask - 1)
num_ffs++;
if (size < read)
return -1;
while (n < read) {
if (data[n] == 0xff)
num_ffs++;
total = (total << 8) | data[n];
n++;
}
if (read == num_ffs && total != 0)
*num = G_MAXUINT64;
else
*num = total;
return read;
}
static gint
gst_matroska_ebmlnum_sint (guint8 * data, guint size, gint64 * num)
{
guint64 unum;
gint res;
/* read as unsigned number first */
if ((res = gst_matroska_ebmlnum_uint (data, size, &unum)) < 0)
return -1;
/* make signed */
if (unum == G_MAXUINT64)
*num = G_MAXINT64;
else
*num = unum - ((1 << ((7 * res) - 1)) - 1);
return res;
}
/*
* Mostly used for subtitles. We add void filler data for each
* lagging stream to make sure we don't deadlock.
*/
static void
gst_matroska_demux_sync_streams (GstMatroskaDemux * demux)
{
gint stream_nr;
GST_LOG ("Sync to %" GST_TIME_FORMAT,
GST_TIME_ARGS (demux->segment.last_stop));
for (stream_nr = 0; stream_nr < demux->num_streams; stream_nr++) {
GstMatroskaTrackContext *context;
context = demux->src[stream_nr];
if (context->type != GST_MATROSKA_TRACK_TYPE_SUBTITLE)
continue;
GST_LOG ("Checking for resync on stream %d (%" GST_TIME_FORMAT ")",
stream_nr, GST_TIME_ARGS (context->pos));
/* does it lag? 0.5 seconds is a random treshold... */
if (context->pos + (GST_SECOND / 2) < demux->segment.last_stop) {
GST_DEBUG ("Synchronizing stream %d with others by advancing time "
"from %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT, stream_nr,
GST_TIME_ARGS (context->pos),
GST_TIME_ARGS (demux->segment.last_stop));
context->pos = demux->segment.last_stop;
/* advance stream time */
gst_pad_push_event (context->pad,
gst_event_new_new_segment (TRUE, demux->segment.rate,
GST_FORMAT_TIME, demux->segment.last_stop, -1,
demux->segment.last_stop));
}
}
}
static GstFlowReturn
gst_matroska_demux_push_hdr_buf (GstMatroskaDemux * demux,
GstMatroskaTrackContext * stream, guint8 * data, guint len)
{
GstFlowReturn ret, cret;
GstBuffer *header_buf = NULL;
ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
GST_BUFFER_OFFSET_NONE, len, stream->caps, &header_buf);
/* we combine but don't use the combined value to check if we have a buffer
* or not. The combined value is what we return. */
cret = gst_matroska_demux_combine_flows (demux, stream, ret);
if (ret != GST_FLOW_OK)
goto no_buffer;
memcpy (GST_BUFFER_DATA (header_buf), data, len);
if (stream->set_discont) {
GST_BUFFER_FLAG_SET (header_buf, GST_BUFFER_FLAG_DISCONT);
stream->set_discont = FALSE;
}
ret = gst_pad_push (stream->pad, header_buf);
/* combine flows */
cret = gst_matroska_demux_combine_flows (demux, stream, ret);
return cret;
/* ERRORS */
no_buffer:
{
GST_DEBUG_OBJECT (demux, "could not alloc buffer: %s, combined %s",
gst_flow_get_name (ret), gst_flow_get_name (cret));
return cret;
}
}
static GstFlowReturn
gst_matroska_demux_push_flac_codec_priv_data (GstMatroskaDemux * demux,
GstMatroskaTrackContext * stream)
{
GstFlowReturn ret;
guint8 *pdata;
guint off, len;
GST_LOG_OBJECT (demux, "priv data size = %u", stream->codec_priv_size);
pdata = (guint8 *) stream->codec_priv;
/* need at least 'fLaC' marker + STREAMINFO metadata block */
if (stream->codec_priv_size < ((4) + (4 + 34))) {
GST_WARNING_OBJECT (demux, "not enough codec priv data for flac headers");
return GST_FLOW_ERROR;
}
if (memcmp (pdata, "fLaC", 4) != 0) {
GST_WARNING_OBJECT (demux, "no flac marker at start of stream headers");
return GST_FLOW_ERROR;
}
ret = gst_matroska_demux_push_hdr_buf (demux, stream, pdata, 4);
if (ret != GST_FLOW_OK)
return ret;
off = 4; /* skip fLaC marker */
while (off < stream->codec_priv_size) {
len = GST_READ_UINT8 (pdata + off + 1) << 16;
len |= GST_READ_UINT8 (pdata + off + 2) << 8;
len |= GST_READ_UINT8 (pdata + off + 3);
GST_DEBUG_OBJECT (demux, "header packet: len=%u bytes, flags=0x%02x",
len, (guint) pdata[off]);
ret = gst_matroska_demux_push_hdr_buf (demux, stream, pdata + off, len);
if (ret != GST_FLOW_OK)
return ret;
off += 4 + len;
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_matroska_demux_push_xiph_codec_priv_data (GstMatroskaDemux * demux,
GstMatroskaTrackContext * stream)
{
GstFlowReturn ret;
guint8 *p = (guint8 *) stream->codec_priv;
gint i, offset, length, num_packets;
/* start of the stream and vorbis audio or theora video, need to
* send the codec_priv data as first three packets */
num_packets = p[0] + 1;
GST_DEBUG_OBJECT (demux, "%u stream headers, total length=%u bytes",
(guint) num_packets, stream->codec_priv_size);
offset = num_packets; /* offset to data of first packet */
for (i = 0; i < num_packets - 1; i++) {
length = p[i + 1];
GST_DEBUG_OBJECT (demux, "buffer %d: length=%u bytes", i, (guint) length);
if (offset + length > stream->codec_priv_size)
return GST_FLOW_ERROR;
ret = gst_matroska_demux_push_hdr_buf (demux, stream, p + offset, length);
if (ret != GST_FLOW_OK)
return ret;
offset += length;
}
length = stream->codec_priv_size - offset;
GST_DEBUG_OBJECT (demux, "buffer %d: length=%u bytes", i, (guint) length);
ret = gst_matroska_demux_push_hdr_buf (demux, stream, p + offset, length);
if (ret != GST_FLOW_OK)
return ret;
return GST_FLOW_OK;
}
static void
gst_matroska_demux_push_dvd_clut_change_event (GstMatroskaDemux * demux,
GstMatroskaTrackContext * stream)
{
gchar *buf, *start;
g_assert (!strcmp (stream->codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_VOBSUB));
if (!stream->codec_priv)
return;
/* ideally, VobSub private data should be parsed and stored more convenient
* elsewhere, but for now, only interested in a small part */
/* make sure we have terminating 0 */
buf = g_strndup (stream->codec_priv, stream->codec_priv_size);
/* just locate and parse palette part */
start = strstr (stream->codec_priv, "palette:");
if (start) {
gint i;
guint32 clut[16];
guint32 col;
guint8 r, g, b, y, u, v;
start += 8;
while (g_ascii_isspace (*start))
start++;
for (i = 0; i < 16; i++) {
if (sscanf (start, "%06x", &col) != 1)
break;
start += 6;
while ((*start == ',') || g_ascii_isspace (*start))
start++;
/* sigh, need to convert this from vobsub pseudo-RGB to YUV */
r = (col >> 16) & 0xff;
g = (col >> 8) & 0xff;
b = col & 0xff;
y = CLAMP ((0.1494 * r + 0.6061 * g + 0.2445 * b) * 219 / 255 + 16, 0,
255);
u = CLAMP (0.6066 * r - 0.4322 * g - 0.1744 * b + 128, 0, 255);
v = CLAMP (-0.08435 * r - 0.3422 * g + 0.4266 * b + 128, 0, 255);
clut[i] = (y << 16) | (u << 8) | v;
}
/* got them all without problems; build and send event */
if (i == 16) {
GstStructure *s;
s = gst_structure_new ("application/x-gst-dvd", "event", G_TYPE_STRING,
"dvd-spu-clut-change", "clut00", G_TYPE_INT, clut[0], "clut01",
G_TYPE_INT, clut[1], "clut02", G_TYPE_INT, clut[2], "clut03",
G_TYPE_INT, clut[3], "clut04", G_TYPE_INT, clut[4], "clut05",
G_TYPE_INT, clut[5], "clut06", G_TYPE_INT, clut[6], "clut07",
G_TYPE_INT, clut[7], "clut08", G_TYPE_INT, clut[8], "clut09",
G_TYPE_INT, clut[9], "clut10", G_TYPE_INT, clut[10], "clut11",
G_TYPE_INT, clut[11], "clut12", G_TYPE_INT, clut[12], "clut13",
G_TYPE_INT, clut[13], "clut14", G_TYPE_INT, clut[14], "clut15",
G_TYPE_INT, clut[15], NULL);
gst_pad_push_event (stream->pad,
gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s));
}
}
g_free (buf);
}
static gboolean
gst_matroska_demux_stream_is_wavpack (GstMatroskaTrackContext * stream)
{
if (stream->type == GST_MATROSKA_TRACK_TYPE_AUDIO) {
return (strcmp (stream->codec_id,
GST_MATROSKA_CODEC_ID_AUDIO_WAVPACK4) == 0);
}
return FALSE;
}
static GstFlowReturn
gst_matroska_demux_add_wvpk_header (GstMatroskaDemux * demux,
GstMatroskaTrackContext * stream, gint block_length, GstBuffer ** buf)
{
GstBuffer *newbuf;
guint8 *data;
guint newlen;
GstFlowReturn ret, cret;
/* we need to reconstruct the header of the wavpack block */
Wavpack4Header wvh;
/* FIXME: broken for > 2 channels and hybrid files
http://www.matroska.org/technical/specs/codecid/wavpack.html */
wvh.ck_id[0] = 'w';
wvh.ck_id[1] = 'v';
wvh.ck_id[2] = 'p';
wvh.ck_id[3] = 'k';
/* -20 because ck_size is the size of the wavpack block -8
* and lace_size is the size of the wavpack block + 12
* (the three guint32 of the header that already are in the buffer) */
wvh.ck_size = block_length + sizeof (Wavpack4Header) - 20;
wvh.version = GST_READ_UINT16_LE (stream->codec_priv);
wvh.track_no = 0;
wvh.index_no = 0;
wvh.total_samples = -1;
wvh.block_index = 0;
/* block_samples, flags and crc are already in the buffer */
newlen = block_length + sizeof (Wavpack4Header) - 12;
ret = gst_pad_alloc_buffer_and_set_caps (stream->pad, GST_BUFFER_OFFSET_NONE,
newlen, stream->caps, &newbuf);
cret = gst_matroska_demux_combine_flows (demux, stream, ret);
if (ret != GST_FLOW_OK) {
GST_DEBUG_OBJECT (demux, "pad_alloc failed %s, combined %s",
gst_flow_get_name (ret), gst_flow_get_name (cret));
return cret;
}
data = GST_BUFFER_DATA (newbuf);
data[0] = 'w';
data[1] = 'v';
data[2] = 'p';
data[3] = 'k';
GST_WRITE_UINT32_LE (data + 4, wvh.ck_size);
GST_WRITE_UINT16_LE (data + 8, wvh.version);
GST_WRITE_UINT8 (data + 10, wvh.track_no);
GST_WRITE_UINT8 (data + 11, wvh.index_no);
GST_WRITE_UINT32_LE (data + 12, wvh.total_samples);
GST_WRITE_UINT32_LE (data + 16, wvh.block_index);
g_memmove (data + 20, GST_BUFFER_DATA (*buf), block_length);
gst_buffer_copy_metadata (newbuf, *buf, GST_BUFFER_COPY_TIMESTAMPS);
gst_buffer_unref (*buf);
*buf = newbuf;
return cret;
}
static GstBuffer *
gst_matroska_demux_check_subtitle_buffer (GstMatroskaDemux * demux,
GstMatroskaTrackContext * stream, GstBuffer * buf)
{
GstMatroskaTrackSubtitleContext *sub_stream;
const gchar *encoding, *data;
GError *err = NULL;
GstBuffer *newbuf;
gchar *utf8;
guint size;
sub_stream = (GstMatroskaTrackSubtitleContext *) stream;
if (!sub_stream->check_utf8)
return buf;
data = (const gchar *) GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
if (!sub_stream->invalid_utf8) {
if (g_utf8_validate (data, size, NULL)) {
return buf;
}
GST_WARNING_OBJECT (demux, "subtitle stream %d is not valid UTF-8, this "
"is broken according to the matroska specification", stream->num);
sub_stream->invalid_utf8 = TRUE;
}
/* file with broken non-UTF8 subtitle, do the best we can do to fix it */
encoding = g_getenv ("GST_SUBTITLE_ENCODING");
if (encoding == NULL || *encoding == '\0') {
/* if local encoding is UTF-8 and no encoding specified
* via the environment variable, assume ISO-8859-15 */
if (g_get_charset (&encoding)) {
encoding = "ISO-8859-15";
}
}
utf8 = g_convert_with_fallback (data, size, "UTF-8", encoding, "*",
NULL, NULL, &err);
if (err) {
GST_LOG_OBJECT (demux, "could not convert string from '%s' to UTF-8: %s",
encoding, err->message);
g_error_free (err);
g_free (utf8);
/* invalid input encoding, fall back to ISO-8859-15 (always succeeds) */
encoding = "ISO-8859-15";
utf8 = g_convert_with_fallback (data, size, "UTF-8", encoding, "*",
NULL, NULL, NULL);
}
GST_LOG_OBJECT (demux, "converted subtitle text from %s to UTF-8 %s",
encoding, (err) ? "(using ISO-8859-15 as fallback)" : "");
if (utf8 == NULL)
utf8 = g_strdup ("invalid subtitle");
newbuf = gst_buffer_new ();
GST_BUFFER_MALLOCDATA (newbuf) = (guint8 *) utf8;
GST_BUFFER_DATA (newbuf) = (guint8 *) utf8;
GST_BUFFER_SIZE (newbuf) = strlen (utf8);
gst_buffer_copy_metadata (newbuf, buf, GST_BUFFER_COPY_TIMESTAMPS);
gst_buffer_unref (buf);
return newbuf;
}
static GstBuffer *
gst_matroska_decode_buffer (GstMatroskaTrackContext * context, GstBuffer * buf)
{
gint i;
g_assert (context->encodings != NULL);
for (i = 0; i < context->encodings->len; i++) {
GstMatroskaTrackEncoding *enc;
guint8 *new_data = NULL;
guint new_size = 0;
GstBuffer *new_buf;
enc = &g_array_index (context->encodings, GstMatroskaTrackEncoding, i);
/* Currently only compression is supported */
if (enc->type != 0)
break;
/* FIXME: use enc->scope ! only necessary to decode buffer if scope & 0x1 */
if (enc->comp_algo == 0) {
#ifdef HAVE_ZLIB
/* zlib encoded track */
z_stream zstream;
guint orig_size;
int result;
orig_size = GST_BUFFER_SIZE (buf);
zstream.zalloc = (alloc_func) 0;
zstream.zfree = (free_func) 0;
zstream.opaque = (voidpf) 0;
if (inflateInit (&zstream) != Z_OK) {
GST_WARNING ("zlib initialization failed.");
break;
}
zstream.next_in = (Bytef *) GST_BUFFER_DATA (buf);
zstream.avail_in = orig_size;
new_size = orig_size;
new_data = g_malloc (new_size);
zstream.avail_out = new_size;
/* FIXME: not exactly fast, right? */
do {
new_size += 4000;
new_data = g_realloc (new_data, new_size);
zstream.next_out = (Bytef *) (new_data + zstream.total_out);
result = inflate (&zstream, Z_NO_FLUSH);
if (result != Z_OK && result != Z_STREAM_END) {
GST_WARNING ("zlib decompression failed.");
g_free (new_data);
inflateEnd (&zstream);
break;
}
zstream.avail_out += 4000;
} while (zstream.avail_out == 4000 &&
zstream.avail_in != 0 && result != Z_STREAM_END);
new_size = zstream.total_out;
inflateEnd (&zstream);
#else
GST_WARNING ("GZIP encoded tracks not supported.");
break;
#endif
/* FIXME: add bzip/lzo support, what is header stripped?
* it's insane and requires deeper knowledge of the used codec
*/
} else if (enc->comp_algo == 1) {
GST_WARNING ("BZIP encoded tracks not supported.");
break;
} else if (enc->comp_algo == 2) {
GST_WARNING ("LZO encoded tracks not supported.");
break;
} else if (enc->comp_algo == 3) {
GST_WARNING ("Header-stripped tracks not supported.");
break;
} else {
g_assert_not_reached ();
}
g_assert (new_data != NULL);
new_buf = gst_buffer_new ();
GST_BUFFER_MALLOCDATA (new_buf) = (guint8 *) new_data;
GST_BUFFER_DATA (new_buf) = (guint8 *) new_data;
GST_BUFFER_SIZE (new_buf) = new_size;
gst_buffer_copy_metadata (new_buf, buf, GST_BUFFER_COPY_TIMESTAMPS);
gst_buffer_unref (buf);
buf = new_buf;
}
return buf;
}
static GstFlowReturn
gst_matroska_demux_parse_blockgroup_or_simpleblock (GstMatroskaDemux * demux,
guint64 cluster_time, gboolean is_simpleblock)
{
GstMatroskaTrackContext *stream = NULL;
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret = GST_FLOW_OK;
gboolean readblock = FALSE;
guint32 id;
guint64 block_duration = 0;
GstBuffer *buf = NULL;
gint stream_num = -1, n, laces = 0;
guint size = 0;
gint *lace_size = NULL;
gint64 time = 0;
gint flags = 0;
gint64 referenceblock = 0;
while (ret == GST_FLOW_OK) {
if (!is_simpleblock) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
goto done;
if (demux->level_up) {
demux->level_up--;
break;
}
} else {
id = GST_MATROSKA_ID_SIMPLEBLOCK;
}
switch (id) {
/* one block inside the group. Note, block parsing is one
* of the harder things, so this code is a bit complicated.
* See http://www.matroska.org/ for documentation. */
case GST_MATROSKA_ID_SIMPLEBLOCK:
case GST_MATROSKA_ID_BLOCK:
{
guint64 num;
guint8 *data;
if ((ret = gst_ebml_read_buffer (ebml, &id, &buf)) != GST_FLOW_OK)
break;
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
/* first byte(s): blocknum */
if ((n = gst_matroska_ebmlnum_uint (data, size, &num)) < 0) {
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL), ("Data error"));
gst_buffer_unref (buf);
buf = NULL;
ret = GST_FLOW_ERROR;
break;
}
data += n;
size -= n;
/* fetch stream from num */
stream_num = gst_matroska_demux_stream_from_num (demux, num);
if (size <= 3 || stream_num < 0 || stream_num >= demux->num_streams) {
gst_buffer_unref (buf);
buf = NULL;
GST_WARNING ("Invalid stream %d or size %u", stream_num, size);
ret = GST_FLOW_ERROR;
break;
}
stream = demux->src[stream_num];
/* time (relative to cluster time) */
time = ((gint16) GST_READ_UINT16_BE (data));
data += 2;
size -= 2;
flags = GST_READ_UINT8 (data);
data += 1;
size -= 1;
switch ((flags & 0x06) >> 1) {
case 0x0: /* no lacing */
laces = 1;
lace_size = g_new (gint, 1);
lace_size[0] = size;
break;
case 0x1: /* xiph lacing */
case 0x2: /* fixed-size lacing */
case 0x3: /* EBML lacing */
if (size == 0) {
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
("Invalid lacing size"));
ret = GST_FLOW_ERROR;
break;
}
laces = GST_READ_UINT8 (data) + 1;
data += 1;
size -= 1;
lace_size = g_new0 (gint, laces);
switch ((flags & 0x06) >> 1) {
case 0x1: /* xiph lacing */ {
guint temp, total = 0;
for (n = 0; ret == GST_FLOW_OK && n < laces - 1; n++) {
while (1) {
if (size == 0) {
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
("Invalid lacing size"));
ret = GST_FLOW_ERROR;
break;
}
temp = GST_READ_UINT8 (data);
lace_size[n] += temp;
data += 1;
size -= 1;
if (temp != 0xff)
break;
}
total += lace_size[n];
}
lace_size[n] = size - total;
break;
}
case 0x2: /* fixed-size lacing */
for (n = 0; n < laces; n++)
lace_size[n] = size / laces;
break;
case 0x3: /* EBML lacing */ {
guint total;
if ((n = gst_matroska_ebmlnum_uint (data, size, &num)) < 0) {
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
("Data error"));
ret = GST_FLOW_ERROR;
break;
}
data += n;
size -= n;
total = lace_size[0] = num;
for (n = 1; ret == GST_FLOW_OK && n < laces - 1; n++) {
gint64 snum;
gint r;
if ((r = gst_matroska_ebmlnum_sint (data, size, &snum)) < 0) {
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
("Data error"));
ret = GST_FLOW_ERROR;
break;
}
data += r;
size -= r;
lace_size[n] = lace_size[n - 1] + snum;
total += lace_size[n];
}
if (n < laces)
lace_size[n] = size - total;
break;
}
}
break;
}
if (stream->send_xiph_headers) {
ret = gst_matroska_demux_push_xiph_codec_priv_data (demux, stream);
stream->send_xiph_headers = FALSE;
}
if (stream->send_flac_headers) {
ret = gst_matroska_demux_push_flac_codec_priv_data (demux, stream);
stream->send_flac_headers = FALSE;
}
if (stream->send_dvd_event) {
gst_matroska_demux_push_dvd_clut_change_event (demux, stream);
/* FIXME: should we send this event again after (flushing) seek ? */
stream->send_dvd_event = FALSE;
}
if (ret != GST_FLOW_OK)
break;
readblock = TRUE;
break;
}
case GST_MATROSKA_ID_BLOCKDURATION:{
ret = gst_ebml_read_uint (ebml, &id, &block_duration);
break;
}
case GST_MATROSKA_ID_REFERENCEBLOCK:{
ret = gst_ebml_read_sint (ebml, &id, &referenceblock);
break;
}
default:
GST_WARNING ("Unknown entry 0x%x in blockgroup data", id);
/* fall-through */
case GST_MATROSKA_ID_BLOCKVIRTUAL:
case GST_MATROSKA_ID_BLOCKADDITIONS:
case GST_MATROSKA_ID_REFERENCEPRIORITY:
case GST_MATROSKA_ID_REFERENCEVIRTUAL:
case GST_MATROSKA_ID_CODECSTATE:
case GST_MATROSKA_ID_SLICES:
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (is_simpleblock)
break;
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (referenceblock && readblock && demux->src[stream_num]->set_discont) {
/* When doing seeks or such, we need to restart on key frames or
decoders might choke. */
readblock = FALSE;
gst_buffer_unref (buf);
buf = NULL;
}
if (ret == GST_FLOW_OK && readblock) {
guint64 duration = 0;
gint64 lace_time = 0;
stream = demux->src[stream_num];
if (cluster_time != GST_CLOCK_TIME_NONE) {
/* FIXME: What to do with negative timestamps? Give timestamp 0 or -1?
* Drop unless the lace contains timestamp 0? */
if (time < 0 && (-time) > cluster_time) {
lace_time = 0;
} else {
if (stream->timecodescale == 1.0)
lace_time = (cluster_time + time) * demux->time_scale;
else
lace_time =
gst_util_guint64_to_gdouble ((cluster_time + time) *
demux->time_scale) * stream->timecodescale;
}
} else {
lace_time = GST_CLOCK_TIME_NONE;
}
if (block_duration) {
if (stream->timecodescale == 1.0)
duration = block_duration * demux->time_scale;
else
duration =
gst_util_gdouble_to_guint64 (gst_util_guint64_to_gdouble
(block_duration * demux->time_scale) * stream->timecodescale);
} else if (stream->default_duration) {
duration = stream->default_duration;
}
/* else duration is diff between timecode of this and next block */
for (n = 0; n < laces; n++) {
GstBuffer *sub;
if (lace_size[n] == 0)
continue;
sub = gst_buffer_create_sub (buf,
GST_BUFFER_SIZE (buf) - size, lace_size[n]);
if (stream->encodings != NULL && stream->encodings->len > 0)
sub = gst_matroska_decode_buffer (stream, sub);
GST_BUFFER_TIMESTAMP (sub) = lace_time;
if (lace_time != GST_CLOCK_TIME_NONE)
demux->segment.last_stop = lace_time;
stream->pos = demux->segment.last_stop;
gst_matroska_demux_sync_streams (demux);
if (gst_matroska_demux_stream_is_wavpack (stream)) {
ret =
gst_matroska_demux_add_wvpk_header (demux, stream, lace_size[n],
&sub);
}
/* FIXME: do all laces have the same length? the lenght of a lace should
* in theory be default_duration as one lace should contain on frame */
if (duration) {
GST_BUFFER_DURATION (sub) = duration / laces;
stream->pos += GST_BUFFER_DURATION (sub);
}
if (is_simpleblock) {
if (flags & 0x80)
GST_BUFFER_FLAG_UNSET (sub, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (sub, GST_BUFFER_FLAG_DELTA_UNIT);
} else {
if (referenceblock) {
GST_BUFFER_FLAG_SET (sub, GST_BUFFER_FLAG_DELTA_UNIT);
} else {
GST_BUFFER_FLAG_UNSET (sub, GST_BUFFER_FLAG_DELTA_UNIT);
}
}
if (stream->set_discont) {
GST_BUFFER_FLAG_SET (sub, GST_BUFFER_FLAG_DISCONT);
stream->set_discont = FALSE;
}
GST_DEBUG ("Pushing lace %d, data of size %d for stream %d, time=%"
GST_TIME_FORMAT " and duration=%" GST_TIME_FORMAT, n,
GST_BUFFER_SIZE (sub), stream_num,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (sub)),
GST_TIME_ARGS (GST_BUFFER_DURATION (sub)));
gst_buffer_set_caps (sub, GST_PAD_CAPS (stream->pad));
/* Fix up broken files with subtitles that are not UTF8 */
if (stream->type == GST_MATROSKA_TRACK_TYPE_SUBTITLE) {
sub = gst_matroska_demux_check_subtitle_buffer (demux, stream, sub);
}
ret = gst_pad_push (stream->pad, sub);
/* combine flows */
ret = gst_matroska_demux_combine_flows (demux, stream, ret);
size -= lace_size[n];
if (lace_time != GST_CLOCK_TIME_NONE)
lace_time += duration;
}
}
done:
if (readblock)
gst_buffer_unref (buf);
g_free (lace_size);
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_cluster (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret = GST_FLOW_OK;
guint64 cluster_time = GST_CLOCK_TIME_NONE;
guint32 id;
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* cluster timecode */
case GST_MATROSKA_ID_CLUSTERTIMECODE:
{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) == GST_FLOW_OK) {
cluster_time = num;
}
break;
}
/* a group of blocks inside a cluster */
case GST_MATROSKA_ID_BLOCKGROUP:
if ((ret = gst_ebml_read_master (ebml, &id)) == GST_FLOW_OK) {
ret = gst_matroska_demux_parse_blockgroup_or_simpleblock (demux,
cluster_time, FALSE);
}
break;
case GST_MATROSKA_ID_SIMPLEBLOCK:
{
ret = gst_matroska_demux_parse_blockgroup_or_simpleblock (demux,
cluster_time, TRUE);
break;
}
default:
GST_WARNING ("Unknown entry 0x%x in cluster data", id);
/* fall-through */
case GST_MATROSKA_ID_POSITION:
case GST_MATROSKA_ID_PREVSIZE:
case GST_MATROSKA_ID_ENCRYPTEDBLOCK:
case GST_MATROSKA_ID_SILENTTRACKS:
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_contents_seekentry (GstMatroskaDemux * demux,
gboolean * p_run_loop)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret;
guint64 seek_pos = (guint64) - 1;
guint32 seek_id = 0;
guint32 id;
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_SEEKID:
{
guint64 t;
if ((ret = gst_ebml_read_uint (ebml, &id, &t)) == GST_FLOW_OK) {
seek_id = t;
}
break;
}
case GST_MATROSKA_ID_SEEKPOSITION:
{
guint64 t;
if ((ret = gst_ebml_read_uint (ebml, &id, &t)) == GST_FLOW_OK) {
seek_pos = t;
}
break;
}
default:
GST_WARNING ("Unknown seekhead ID 0x%x", id);
/* fall-through */
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (ret != GST_FLOW_OK)
return ret;
if (!seek_id || seek_pos == (guint64) - 1) {
GST_WARNING ("Incomplete seekhead entry (0x%x/%"
G_GUINT64_FORMAT ")", seek_id, seek_pos);
return GST_FLOW_OK;
}
switch (seek_id) {
case GST_MATROSKA_ID_CUES:
case GST_MATROSKA_ID_TAGS:
case GST_MATROSKA_ID_TRACKS:
case GST_MATROSKA_ID_SEEKHEAD:
case GST_MATROSKA_ID_SEGMENTINFO:
case GST_MATROSKA_ID_ATTACHMENTS:
case GST_MATROSKA_ID_CHAPTERS:
{
guint level_up = demux->level_up;
guint64 before_pos, length;
GstEbmlLevel *level;
/* remember */
length = gst_ebml_read_get_length (ebml);
before_pos = ebml->offset;
/* check for validity */
if (seek_pos + demux->ebml_segment_start + 12 >= length) {
GST_WARNING_OBJECT (demux,
"Seekhead reference lies outside file!" " (%"
G_GUINT64_FORMAT "+%" G_GUINT64_FORMAT "+12 >= %"
G_GUINT64_FORMAT ")", seek_pos, demux->ebml_segment_start, length);
break;
}
/* seek */
if (gst_ebml_read_seek (ebml, seek_pos + demux->ebml_segment_start) !=
GST_FLOW_OK)
return GST_FLOW_ERROR;
/* we don't want to lose our seekhead level, so we add
* a dummy. This is a crude hack. */
level = g_new (GstEbmlLevel, 1);
level->start = 0;
level->length = G_MAXUINT64;
ebml->level = g_list_append (ebml->level, level);
/* check ID */
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (id != seek_id) {
g_warning ("We looked for ID=0x%x but got ID=0x%x (pos=%"
G_GUINT64_FORMAT ")", seek_id, id,
seek_pos + demux->ebml_segment_start);
goto finish;
}
/* read master + parse */
switch (id) {
case GST_MATROSKA_ID_CUES:
if (!demux->index_parsed) {
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret =
gst_matroska_demux_parse_index (demux,
TRUE)) != GST_FLOW_OK)
return ret;
}
if (gst_ebml_read_get_length (ebml) == ebml->offset)
*p_run_loop = FALSE;
break;
case GST_MATROSKA_ID_TAGS:
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret =
gst_matroska_demux_parse_metadata (demux,
TRUE)) != GST_FLOW_OK)
return ret;
if (gst_ebml_read_get_length (ebml) == ebml->offset)
*p_run_loop = FALSE;
break;
case GST_MATROSKA_ID_TRACKS:
if (!demux->tracks_parsed) {
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret = gst_matroska_demux_parse_tracks (demux)) != GST_FLOW_OK)
return ret;
}
if (gst_ebml_read_get_length (ebml) == ebml->offset)
*p_run_loop = FALSE;
break;
case GST_MATROSKA_ID_SEGMENTINFO:
if (!demux->segmentinfo_parsed) {
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret = gst_matroska_demux_parse_info (demux)) != GST_FLOW_OK)
return ret;
}
if (gst_ebml_read_get_length (ebml) == ebml->offset)
*p_run_loop = FALSE;
break;
case GST_MATROSKA_ID_SEEKHEAD:
{
GList *l;
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
/* Prevent infinite recursion if there's a cycle from
* one seekhead to the same again. Simply break if
* we already had this seekhead, finish will clean up
* everything. */
for (l = ebml->level; l; l = l->next) {
GstEbmlLevel *level = (GstEbmlLevel *) l->data;
if (level->start == ebml->offset && l->next)
goto finish;
}
if ((ret =
gst_matroska_demux_parse_contents (demux,
p_run_loop)) != GST_FLOW_OK)
return ret;
if (gst_ebml_read_get_length (ebml) == ebml->offset)
*p_run_loop = FALSE;
break;
}
case GST_MATROSKA_ID_ATTACHMENTS:
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret =
gst_matroska_demux_parse_attachments (demux,
TRUE)) != GST_FLOW_OK)
return ret;
if (gst_ebml_read_get_length (ebml) == ebml->offset)
*p_run_loop = FALSE;
break;
case GST_MATROSKA_ID_CHAPTERS:
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret =
gst_matroska_demux_parse_chapters (demux,
TRUE)) != GST_FLOW_OK)
return ret;
if (gst_ebml_read_get_length (ebml) == ebml->offset)
*p_run_loop = FALSE;
break;
}
/* FIXME:
* used to be here in 0.8 version, but makes mewmew sample not work */
/* if (*p_run_loop == FALSE) break; */
finish:
/* remove dummy level */
while (ebml->level) {
guint64 length;
level = g_list_last (ebml->level)->data;
ebml->level = g_list_remove (ebml->level, level);
length = level->length;
g_free (level);
if (length == G_MAXUINT64)
break;
}
/* seek back */
(void) gst_ebml_read_seek (ebml, before_pos);
demux->level_up = level_up;
break;
}
default:
GST_INFO ("Ignoring seekhead entry for ID=0x%x", seek_id);
break;
}
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_contents (GstMatroskaDemux * demux,
gboolean * p_run_loop)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret = GST_FLOW_OK;
guint32 id;
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_SEEKENTRY:
{
ret = gst_matroska_demux_parse_contents_seekentry (demux, p_run_loop);
break;
}
default:
GST_WARNING ("Unknown seekhead ID 0x%x", id);
/* fall-through */
case GST_EBML_ID_VOID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return ret;
}
/* returns FALSE on error, otherwise TRUE */
static GstFlowReturn
gst_matroska_demux_loop_stream_parse_id (GstMatroskaDemux * demux,
guint32 id, gboolean * p_run_loop)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret;
switch (id) {
/* stream info
* Can exist more than once but following occurences
* must have the same content so ignore them */
case GST_MATROSKA_ID_SEGMENTINFO:
if (!demux->segmentinfo_parsed) {
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret = gst_matroska_demux_parse_info (demux)) != GST_FLOW_OK)
return ret;
} else {
if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK)
return ret;
}
break;
/* track info headers
* Can exist more than once but following occurences
* must have the same content so ignore them */
case GST_MATROSKA_ID_TRACKS:
{
if (!demux->tracks_parsed) {
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret = gst_matroska_demux_parse_tracks (demux)) != GST_FLOW_OK)
return ret;
} else {
if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK)
return ret;
}
break;
}
/* cues - seek table
* Either exists exactly one time or never but ignore
* following occurences for the sake of sanity */
case GST_MATROSKA_ID_CUES:
{
if (!demux->index_parsed) {
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret =
gst_matroska_demux_parse_index (demux, FALSE)) != GST_FLOW_OK)
return ret;
} else {
if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK)
return ret;
}
break;
}
/* metadata
* can exist more than one time with different content */
case GST_MATROSKA_ID_TAGS:
{
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret =
gst_matroska_demux_parse_metadata (demux, FALSE)) != GST_FLOW_OK)
return ret;
break;
}
/* file index (if seekable, seek to Cues/Tags/etc to parse it) */
case GST_MATROSKA_ID_SEEKHEAD:
{
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret =
gst_matroska_demux_parse_contents (demux,
p_run_loop)) != GST_FLOW_OK)
return ret;
break;
}
/* cluster - contains the payload */
case GST_MATROSKA_ID_CLUSTER:
{
if (demux->state != GST_MATROSKA_DEMUX_STATE_DATA) {
/* FIXME: Skip first and try to read TRACKS and other things
* first, then go back here. */
demux->state = GST_MATROSKA_DEMUX_STATE_DATA;
/* FIXME: different streams might have different lengths! */
/* send initial discont */
gst_matroska_demux_send_event (demux,
gst_event_new_new_segment (FALSE, 1.0,
GST_FORMAT_TIME, 0,
(demux->segment.duration > 0) ? demux->segment.duration : -1,
0));
GST_DEBUG_OBJECT (demux, "signaling no more pads");
gst_element_no_more_pads (GST_ELEMENT (demux));
} else {
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
/* The idea is that we parse one cluster per loop and
* then break out of the loop here. In the next call
* of the loopfunc, we will get back here with the
* next cluster. If an error occurs, we didn't
* actually push a buffer, but we still want to break
* out of the loop to handle a possible error. We'll
* get back here if it's recoverable. */
if ((ret = gst_matroska_demux_parse_cluster (demux)) != GST_FLOW_OK)
return ret;
*p_run_loop = FALSE;
}
break;
}
/* attachments - contains files attached to the mkv container
* like album art, etc */
case GST_MATROSKA_ID_ATTACHMENTS:{
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret =
gst_matroska_demux_parse_attachments (demux,
FALSE)) != GST_FLOW_OK)
return ret;
break;
}
/* chapters - contains meta information about how to group
* the file into chapters, similar to DVD */
case GST_MATROSKA_ID_CHAPTERS:{
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret =
gst_matroska_demux_parse_chapters (demux, FALSE)) != GST_FLOW_OK)
return ret;
break;
}
default:
GST_WARNING ("Unknown matroska file header ID 0x%x at %"
G_GUINT64_FORMAT, id, GST_EBML_READ (demux)->offset);
/* fall-through */
case GST_EBML_ID_VOID:
{
if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK)
return ret;
break;
}
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_matroska_demux_loop_stream (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret = GST_FLOW_OK;
gboolean run_loop = TRUE;
guint32 id;
/* we've found our segment, start reading the different contents in here */
while (run_loop && ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
return ret;
if (demux->level_up) {
demux->level_up--;
break;
}
ret = gst_matroska_demux_loop_stream_parse_id (demux, id, &run_loop);
if (demux->level_up) {
demux->level_up--;
break;
}
}
return ret;
}
static void
gst_matroska_demux_loop (GstPad * pad)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (GST_PAD_PARENT (pad));
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret;
/* first, if we're to start, let's actually get starting */
if (demux->state == GST_MATROSKA_DEMUX_STATE_START) {
ret = gst_matroska_demux_init_stream (demux);
if (ret != GST_FLOW_OK) {
GST_WARNING_OBJECT (demux, "init stream failed!");
goto pause;
}
demux->state = GST_MATROSKA_DEMUX_STATE_HEADER;
}
ret = gst_matroska_demux_loop_stream (demux);
if (ret != GST_FLOW_OK)
goto pause;
/* check if we're at the end of a configured segment */
if (GST_CLOCK_TIME_IS_VALID (demux->segment.stop)) {
guint i;
for (i = 0; i < demux->num_streams; i++) {
if (demux->src[i]->pos >= demux->segment.stop) {
GST_INFO_OBJECT (demux, "Reached end of segment (%" G_GUINT64_FORMAT
"-%" G_GUINT64_FORMAT ") on pad %s:%s", demux->segment.start,
demux->segment.stop, GST_DEBUG_PAD_NAME (demux->src[i]->pad));
ret = GST_FLOW_UNEXPECTED;
goto pause;
}
}
}
if (ebml->offset == gst_ebml_read_get_length (ebml)) {
GST_LOG ("Reached end of stream, sending EOS");
ret = GST_FLOW_UNEXPECTED;
goto pause;
}
return;
/* ERRORS */
pause:
{
const gchar *reason = gst_flow_get_name (ret);
GST_LOG_OBJECT (demux, "pausing task, reason %s", reason);
demux->segment_running = FALSE;
gst_pad_pause_task (demux->sinkpad);
if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
if (ret == GST_FLOW_UNEXPECTED) {
/* perform EOS logic */
if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
gint64 stop;
/* for segment playback we need to post when (in stream time)
* we stopped, this is either stop (when set) or the duration. */
if ((stop = demux->segment.stop) == -1)
stop = demux->segment.duration;
GST_LOG_OBJECT (demux, "Sending segment done, at end of segment");
gst_element_post_message (GST_ELEMENT (demux),
gst_message_new_segment_done (GST_OBJECT (demux), GST_FORMAT_TIME,
stop));
} else {
/* normal playback, send EOS to all linked pads */
GST_LOG_OBJECT (demux, "Sending EOS, at end of stream");
gst_matroska_demux_send_event (demux, gst_event_new_eos ());
}
} else {
GST_ELEMENT_ERROR (demux, STREAM, FAILED, (NULL),
("stream stopped, reason %s", reason));
gst_matroska_demux_send_event (demux, gst_event_new_eos ());
}
}
return;
}
}
static gboolean
gst_matroska_demux_sink_activate (GstPad * sinkpad)
{
if (gst_pad_check_pull_range (sinkpad))
return gst_pad_activate_pull (sinkpad, TRUE);
return FALSE;
}
static gboolean
gst_matroska_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (GST_PAD_PARENT (sinkpad));
if (active) {
/* if we have a scheduler we can start the task */
demux->segment_running = TRUE;
gst_pad_start_task (sinkpad, (GstTaskFunction) gst_matroska_demux_loop,
sinkpad);
} else {
demux->segment_running = FALSE;
gst_pad_stop_task (sinkpad);
}
return TRUE;
}
static GstCaps *
gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
videocontext, const gchar * codec_id, gpointer data, guint size,
gchar ** codec_name)
{
GstMatroskaTrackContext *context = (GstMatroskaTrackContext *) videocontext;
GstCaps *caps = NULL;
g_assert (videocontext != NULL);
g_assert (codec_name != NULL);
context->send_xiph_headers = FALSE;
context->send_flac_headers = FALSE;
/* TODO: check if we have all codec types from matroska-ids.h
* check if we have to do more special things with codec_private
*
* Add support for
* GST_MATROSKA_CODEC_ID_VIDEO_QUICKTIME
* GST_MATROSKA_CODEC_ID_VIDEO_SNOW
*/
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_VFW_FOURCC)) {
gst_riff_strf_vids *vids = NULL;
if (data) {
GstBuffer *buf = NULL;
vids = (gst_riff_strf_vids *) data;
/* assure size is big enough */
if (size < 24) {
GST_WARNING ("Too small BITMAPINFOHEADER (%d bytes)", size);
return NULL;
}
if (size < sizeof (gst_riff_strf_vids)) {
vids =
(gst_riff_strf_vids *) g_realloc (vids,
sizeof (gst_riff_strf_vids));
}
/* little-endian -> byte-order */
vids->size = GUINT32_FROM_LE (vids->size);
vids->width = GUINT32_FROM_LE (vids->width);
vids->height = GUINT32_FROM_LE (vids->height);
vids->planes = GUINT16_FROM_LE (vids->planes);
vids->bit_cnt = GUINT16_FROM_LE (vids->bit_cnt);
vids->compression = GUINT32_FROM_LE (vids->compression);
vids->image_size = GUINT32_FROM_LE (vids->image_size);
vids->xpels_meter = GUINT32_FROM_LE (vids->xpels_meter);
vids->ypels_meter = GUINT32_FROM_LE (vids->ypels_meter);
vids->num_colors = GUINT32_FROM_LE (vids->num_colors);
vids->imp_colors = GUINT32_FROM_LE (vids->imp_colors);
if (size > sizeof (gst_riff_strf_vids)) { /* some extra_data */
buf = gst_buffer_new_and_alloc (size - sizeof (gst_riff_strf_vids));
memcpy (GST_BUFFER_DATA (buf),
(guint8 *) vids + sizeof (gst_riff_strf_vids),
GST_BUFFER_SIZE (buf));
}
caps = gst_riff_create_video_caps (vids->compression, NULL, vids,
buf, NULL, codec_name);
if (buf)
gst_buffer_unref (buf);
}
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_UNCOMPRESSED)) {
guint32 fourcc = 0;
switch (videocontext->fourcc) {
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
*codec_name = g_strdup ("Raw planar YUV 4:2:0");
fourcc = videocontext->fourcc;
break;
case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
*codec_name = g_strdup ("Raw packed YUV 4:2:2");
fourcc = videocontext->fourcc;
break;
case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
*codec_name = g_strdup ("Raw packed YUV 4:2:0");
fourcc = videocontext->fourcc;
break;
case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
*codec_name = g_strdup ("Raw packed YUV 4:2:2");
fourcc = videocontext->fourcc;
break;
case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'):
*codec_name = g_strdup ("Raw packed YUV 4:4:4 with alpha channel");
fourcc = videocontext->fourcc;
break;
default:
GST_DEBUG ("Unknown fourcc %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (videocontext->fourcc));
return NULL;
}
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, fourcc, NULL);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_SP)) {
caps = gst_caps_new_simple ("video/x-divx",
"divxversion", G_TYPE_INT, 4, NULL);
*codec_name = g_strdup ("MPEG-4 simple profile");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_ASP) ||
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_AP)) {
#if 0
caps = gst_caps_new_full (gst_structure_new ("video/x-divx",
"divxversion", G_TYPE_INT, 5, NULL),
gst_structure_new ("video/x-xvid", NULL),
gst_structure_new ("video/mpeg",
"mpegversion", G_TYPE_INT, 4,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL), NULL);
#endif
caps = gst_caps_new_simple ("video/mpeg",
"mpegversion", G_TYPE_INT, 4,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_ASP))
*codec_name = g_strdup ("MPEG-4 advanced simple profile");
else
*codec_name = g_strdup ("MPEG-4 advanced profile");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MSMPEG4V3)) {
#if 0
caps = gst_caps_new_full (gst_structure_new ("video/x-divx",
"divxversion", G_TYPE_INT, 3, NULL),
gst_structure_new ("video/x-msmpeg",
"msmpegversion", G_TYPE_INT, 43, NULL), NULL);
#endif
caps = gst_caps_new_simple ("video/x-msmpeg",
"msmpegversion", G_TYPE_INT, 43, NULL);
*codec_name = g_strdup ("Microsoft MPEG-4 v.3");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG1) ||
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG2)) {
gint mpegversion = -1;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG1))
mpegversion = 1;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG2))
mpegversion = 2;
else
g_assert_not_reached ();
caps = gst_caps_new_simple ("video/mpeg",
"systemstream", G_TYPE_BOOLEAN, FALSE,
"mpegversion", G_TYPE_INT, mpegversion, NULL);
*codec_name = g_strdup_printf ("MPEG-%d video", mpegversion);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MJPEG)) {
caps = gst_caps_new_simple ("image/jpeg", NULL);
*codec_name = g_strdup ("Motion-JPEG");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_AVC)) {
caps = gst_caps_new_simple ("video/x-h264", NULL);
if (data) {
GstBuffer *priv = gst_buffer_new_and_alloc (size);
memcpy (GST_BUFFER_DATA (priv), data, size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
gst_buffer_unref (priv);
}
*codec_name = g_strdup ("H264");
} else if ((!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO1)) ||
(!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO2)) ||
(!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO3)) ||
(!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO4))) {
gint rmversion = -1;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO1))
rmversion = 1;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO2))
rmversion = 2;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO3))
rmversion = 3;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO4))
rmversion = 4;
caps = gst_caps_new_simple ("video/x-pn-realvideo",
"rmversion", G_TYPE_INT, rmversion, NULL);
*codec_name = g_strdup_printf ("RealVideo %d.0", rmversion);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_THEORA)) {
caps = gst_caps_new_simple ("video/x-theora", NULL);
context->send_xiph_headers = TRUE;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_DIRAC)) {
caps = gst_caps_new_simple ("video/x-dirac", NULL);
context->send_xiph_headers = FALSE;
} else {
GST_WARNING ("Unknown codec '%s', cannot build Caps", codec_id);
return NULL;
}
if (caps != NULL) {
int i;
GstStructure *structure;
for (i = 0; i < gst_caps_get_size (caps); i++) {
structure = gst_caps_get_structure (caps, i);
/* FIXME: use the real unit here! */
GST_DEBUG ("video size %dx%d, target display size %dx%d (any unit)",
videocontext->pixel_width,
videocontext->pixel_height,
videocontext->display_width, videocontext->display_height);
/* pixel width and height are the w and h of the video in pixels */
if (videocontext->pixel_width > 0 && videocontext->pixel_height > 0) {
gint w = videocontext->pixel_width;
gint h = videocontext->pixel_height;
gst_structure_set (structure,
"width", G_TYPE_INT, w, "height", G_TYPE_INT, h, NULL);
}
if (videocontext->display_width > 0 && videocontext->display_height > 0) {
int n, d;
/* calculate the pixel aspect ratio using the display and pixel w/h */
n = videocontext->display_width * videocontext->pixel_height;
d = videocontext->display_height * videocontext->pixel_width;
GST_DEBUG ("setting PAR to %d/%d", n, d);
gst_structure_set (structure, "pixel-aspect-ratio",
GST_TYPE_FRACTION,
videocontext->display_width * videocontext->pixel_height,
videocontext->display_height * videocontext->pixel_width, NULL);
}
if (videocontext->default_fps > 0.0) {
GValue fps_double = { 0, };
GValue fps_fraction = { 0, };
g_value_init (&fps_double, G_TYPE_DOUBLE);
g_value_init (&fps_fraction, GST_TYPE_FRACTION);
g_value_set_double (&fps_double, videocontext->default_fps);
g_value_transform (&fps_double, &fps_fraction);
gst_structure_set_value (structure, "framerate", &fps_fraction);
g_value_unset (&fps_double);
g_value_unset (&fps_fraction);
} else if (context->default_duration > 0) {
GValue fps_double = { 0, };
GValue fps_fraction = { 0, };
g_value_init (&fps_double, G_TYPE_DOUBLE);
g_value_init (&fps_fraction, GST_TYPE_FRACTION);
g_value_set_double (&fps_double, (gdouble) GST_SECOND /
gst_guint64_to_gdouble (context->default_duration));
g_value_transform (&fps_double, &fps_fraction);
gst_structure_set_value (structure, "framerate", &fps_fraction);
g_value_unset (&fps_double);
g_value_unset (&fps_fraction);
} else {
/* sort of a hack to get most codecs to support,
* even if the default_duration is missing */
gst_structure_set (structure, "framerate", GST_TYPE_FRACTION,
25, 1, NULL);
}
}
gst_caps_do_simplify (caps);
}
return caps;
}
/*
* Some AAC specific code... *sigh*
* FIXME: maybe we should use '15' and code the sample rate explicitly
* if the sample rate doesn't match the predefined rates exactly? (tpm)
*/
static gint
aac_rate_idx (gint rate)
{
if (92017 <= rate)
return 0;
else if (75132 <= rate)
return 1;
else if (55426 <= rate)
return 2;
else if (46009 <= rate)
return 3;
else if (37566 <= rate)
return 4;
else if (27713 <= rate)
return 5;
else if (23004 <= rate)
return 6;
else if (18783 <= rate)
return 7;
else if (13856 <= rate)
return 8;
else if (11502 <= rate)
return 9;
else if (9391 <= rate)
return 10;
else
return 11;
}
static gint
aac_profile_idx (const gchar * codec_id)
{
gint profile;
if (strlen (codec_id) <= 12)
profile = 3;
else if (!strncmp (&codec_id[12], "MAIN", 4))
profile = 0;
else if (!strncmp (&codec_id[12], "LC", 2))
profile = 1;
else if (!strncmp (&codec_id[12], "SSR", 3))
profile = 2;
else
profile = 3;
return profile;
}
#define AAC_SYNC_EXTENSION_TYPE 0x02b7
static GstCaps *
gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext *
audiocontext, const gchar * codec_id, gpointer data, guint size,
gchar ** codec_name)
{
GstMatroskaTrackContext *context = (GstMatroskaTrackContext *) audiocontext;
GstCaps *caps = NULL;
g_assert (audiocontext != NULL);
g_assert (codec_name != NULL);
context->send_xiph_headers = FALSE;
context->send_flac_headers = FALSE;
/* TODO: check if we have all codec types from matroska-ids.h
* check if we have to do more special things with codec_private
* check if we need bitdepth in different places too
* implement channel position magic
* Add support for:
* GST_MATROSKA_CODEC_ID_AUDIO_AC3_BSID9
* GST_MATROSKA_CODEC_ID_AUDIO_AC3_BSID10
* GST_MATROSKA_CODEC_ID_AUDIO_QUICKTIME_QDMC
* GST_MATROSKA_CODEC_ID_AUDIO_QUICKTIME_QDM2
*/
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L1) ||
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L2) ||
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L3)) {
gint layer = -1;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L1))
layer = 1;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L2))
layer = 2;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L3))
layer = 3;
else
g_assert_not_reached ();
caps = gst_caps_new_simple ("audio/mpeg",
"mpegversion", G_TYPE_INT, 1, "layer", G_TYPE_INT, layer, NULL);
*codec_name = g_strdup_printf ("MPEG-1 layer %d", layer);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_BE) ||
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_LE)) {
gint endianness = -1;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_BE))
endianness = G_BIG_ENDIAN;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_LE))
endianness = G_LITTLE_ENDIAN;
else
g_assert_not_reached ();
caps = gst_caps_new_simple ("audio/x-raw-int",
"width", G_TYPE_INT, audiocontext->bitdepth,
"depth", G_TYPE_INT, audiocontext->bitdepth,
"signed", G_TYPE_BOOLEAN, audiocontext->bitdepth == 8,
"endianness", G_TYPE_INT, endianness, NULL);
*codec_name = g_strdup_printf ("Raw %d-bit PCM audio",
audiocontext->bitdepth);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_FLOAT)) {
caps = gst_caps_new_simple ("audio/x-raw-float",
"endianness", G_TYPE_INT, G_LITTLE_ENDIAN,
"width", G_TYPE_INT, audiocontext->bitdepth, NULL);
*codec_name = g_strdup_printf ("Raw %d-bit floating-point audio",
audiocontext->bitdepth);
} else if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AC3,
strlen (GST_MATROSKA_CODEC_ID_AUDIO_AC3))) {
caps = gst_caps_new_simple ("audio/x-ac3", NULL);
*codec_name = g_strdup ("AC-3 audio");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_DTS)) {
caps = gst_caps_new_simple ("audio/x-dts", NULL);
*codec_name = g_strdup ("DTS audio");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_VORBIS)) {
caps = gst_caps_new_simple ("audio/x-vorbis", NULL);
context->send_xiph_headers = TRUE;
/* vorbis decoder does tags */
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_FLAC)) {
caps = gst_caps_new_simple ("audio/x-flac", NULL);
context->send_flac_headers = TRUE;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_ACM)) {
gst_riff_strf_auds *auds = NULL;
if (data) {
auds = (gst_riff_strf_auds *) data;
/* little-endian -> byte-order */
auds->format = GUINT16_FROM_LE (auds->format);
auds->channels = GUINT16_FROM_LE (auds->channels);
auds->rate = GUINT32_FROM_LE (auds->rate);
auds->av_bps = GUINT32_FROM_LE (auds->av_bps);
auds->blockalign = GUINT16_FROM_LE (auds->blockalign);
auds->size = GUINT16_FROM_LE (auds->size);
caps = gst_riff_create_audio_caps (auds->format, NULL, auds, NULL,
NULL, codec_name);
}
} else if (g_str_has_prefix (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AAC)) {
GstBuffer *priv = NULL;
gint mpegversion = -1;
gint rate_idx, profile;
guint8 *data = NULL;
/* unspecified AAC profile with opaque private codec data */
if (strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AAC) == 0) {
if (context->codec_priv_size >= 2) {
guint obj_type, freq_index, explicit_freq_bytes = 0;
codec_id = GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG4;
freq_index = (GST_READ_UINT16_BE (context->codec_priv) & 0x780) >> 7;
obj_type = (GST_READ_UINT16_BE (context->codec_priv) & 0xF800) >> 11;
if (freq_index == 15)
explicit_freq_bytes = 3;
GST_DEBUG ("obj_type = %u, freq_index = %u", obj_type, freq_index);
priv = gst_buffer_new_and_alloc (context->codec_priv_size);
memcpy (GST_BUFFER_DATA (priv), context->codec_priv,
context->codec_priv_size);
/* assume SBR if samplerate <= 24kHz */
if (obj_type == 5 || (freq_index >= 6 && freq_index != 15) ||
(context->codec_priv_size == (5 + explicit_freq_bytes))) {
audiocontext->samplerate *= 2;
}
} else {
GST_WARNING ("Opaque A_AAC codec ID, but no codec private data");
/* just try this and see what happens ... */
codec_id = GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG4;
}
}
/* make up decoder-specific data if it is not supplied */
if (priv == NULL) {
priv = gst_buffer_new_and_alloc (5);
data = GST_BUFFER_DATA (priv);
rate_idx = aac_rate_idx (audiocontext->samplerate);
profile = aac_profile_idx (codec_id);
data[0] = ((profile + 1) << 3) | ((rate_idx & 0xE) >> 1);
data[1] = ((rate_idx & 0x1) << 7) | (audiocontext->channels << 3);
GST_BUFFER_SIZE (priv) = 2;
}
if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG2,
strlen (GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG2))) {
mpegversion = 2;
} else if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG4,
strlen (GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG4))) {
mpegversion = 4;
if (g_strrstr (codec_id, "SBR")) {
/* HE-AAC (aka SBR AAC) */
audiocontext->samplerate *= 2;
rate_idx = aac_rate_idx (audiocontext->samplerate);
data[2] = AAC_SYNC_EXTENSION_TYPE >> 3;
data[3] = ((AAC_SYNC_EXTENSION_TYPE & 0x07) << 5) | 5;
data[4] = (1 << 7) | (rate_idx << 3);
GST_BUFFER_SIZE (priv) = 5;
}
} else {
g_assert_not_reached ();
}
caps = gst_caps_new_simple ("audio/mpeg",
"mpegversion", G_TYPE_INT, mpegversion,
"framed", G_TYPE_BOOLEAN, TRUE, NULL);
if (priv) {
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
}
*codec_name = g_strdup_printf ("MPEG-%d AAC audio", mpegversion);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_TTA)) {
caps = gst_caps_new_simple ("audio/x-tta",
"width", G_TYPE_INT, audiocontext->bitdepth, NULL);
*codec_name = g_strdup ("TTA audio");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_WAVPACK4)) {
caps = gst_caps_new_simple ("audio/x-wavpack",
"width", G_TYPE_INT, audiocontext->bitdepth,
"framed", G_TYPE_BOOLEAN, TRUE, NULL);
*codec_name = g_strdup ("Wavpack audio");
} else if ((!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4)) ||
(!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4)) ||
(!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_COOK))) {
gint raversion = -1;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4))
raversion = 1;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_COOK))
raversion = 8;
else
raversion = 2;
caps = gst_caps_new_simple ("audio/x-pn-realaudio",
"raversion", G_TYPE_INT, raversion, NULL);
*codec_name = g_strdup_printf ("RealAudio %d.0", raversion);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_SIPR)) {
caps = gst_caps_new_simple ("audio/x-sipro", NULL);
*codec_name = g_strdup ("Sipro/ACELP.NET Voice Codec");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_RALF)) {
caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
*codec_name = g_strdup ("Real Audio Lossless");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_ATRC)) {
caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
*codec_name = g_strdup ("Sony ATRAC3");
} else {
GST_WARNING ("Unknown codec '%s', cannot build Caps", codec_id);
return NULL;
}
if (caps != NULL) {
if (audiocontext->samplerate > 0 && audiocontext->channels > 0) {
gint i;
for (i = 0; i < gst_caps_get_size (caps); i++) {
gst_structure_set (gst_caps_get_structure (caps, i),
"channels", G_TYPE_INT, audiocontext->channels,
"rate", G_TYPE_INT, audiocontext->samplerate, NULL);
}
}
gst_caps_do_simplify (caps);
}
return caps;
}
static GstCaps *
gst_matroska_demux_subtitle_caps (GstMatroskaTrackSubtitleContext *
subtitlecontext, const gchar * codec_id, gpointer data, guint size)
{
GstCaps *caps = NULL;
/* for backwards compatibility */
if (!g_ascii_strcasecmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_ASCII))
codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_UTF8;
else if (!g_ascii_strcasecmp (codec_id, "S_SSA"))
codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_SSA;
else if (!g_ascii_strcasecmp (codec_id, "S_ASS"))
codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_ASS;
else if (!g_ascii_strcasecmp (codec_id, "S_USF"))
codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_USF;
/* TODO: Add GST_MATROSKA_CODEC_ID_SUBTITLE_BMP support
* Check if we have to do something with codec_private */
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_UTF8)) {
caps = gst_caps_new_simple ("text/plain", NULL);
subtitlecontext->check_utf8 = TRUE;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_SSA)) {
caps = gst_caps_new_simple ("application/x-ssa", NULL);
subtitlecontext->check_utf8 = TRUE;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_ASS)) {
caps = gst_caps_new_simple ("application/x-ass", NULL);
subtitlecontext->check_utf8 = TRUE;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_USF)) {
caps = gst_caps_new_simple ("application/x-usf", NULL);
subtitlecontext->check_utf8 = TRUE;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_VOBSUB)) {
caps = gst_caps_new_simple ("video/x-dvd-subpicture", NULL);
((GstMatroskaTrackContext *) subtitlecontext)->send_dvd_event = TRUE;
subtitlecontext->check_utf8 = FALSE;
} else {
GST_DEBUG ("Unknown subtitle stream: codec_id='%s'", codec_id);
caps = gst_caps_new_simple ("application/x-subtitle-unknown", NULL);
subtitlecontext->check_utf8 = FALSE;
}
if (data != NULL && size > 0) {
GstBuffer *buf;
buf = gst_buffer_new_and_alloc (size);
memcpy (GST_BUFFER_DATA (buf), data, size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
}
return caps;
}
static GstStateChangeReturn
gst_matroska_demux_change_state (GstElement * element,
GstStateChange transition)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
/* handle upwards state changes here */
switch (transition) {
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
/* handle downwards state changes */
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_matroska_demux_reset (GST_ELEMENT (demux));
break;
default:
break;
}
return ret;
}
gboolean
gst_matroska_demux_plugin_init (GstPlugin * plugin)
{
gst_riff_init ();
/* create an elementfactory for the matroska_demux element */
if (!gst_element_register (plugin, "matroskademux",
GST_RANK_PRIMARY, GST_TYPE_MATROSKA_DEMUX))
return FALSE;
return TRUE;
}
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