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gstreamer/gst/matroska/matroska-demux.c
Wim Taymans 99eb36eac0 gst/matroska/matroska-demux.c: Forward unknown events upstream. 
Original commit message from CVS:
* gst/matroska/matroska-demux.c:
(gst_matroska_demux_handle_src_event):
Forward unknown events upstream.
2008-10-27 10:35:07 +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>
* (c) 2008 Sebastian Dröge <slomo@circular-chaos.org>
*
* 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: check CRC32 if present
* TODO: there can be a segment after the first segment. Handle like
* chained oggs. Fixes #334082
* 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>
#include <gst/tag/tag.h>
#include <gst/base/gsttypefindhelper.h>
#ifdef HAVE_ZLIB
#include <zlib.h>
#endif
#ifdef HAVE_BZ2
#include <bzlib.h>
#endif
#include "lzo.h"
#include "matroska-demux.h"
#include "matroska-ids.h"
GST_DEBUG_CATEGORY_STATIC (matroskademux_debug);
#define GST_CAT_DEFAULT matroskademux_debug
#define DEBUG_ELEMENT_START(demux, ebml, element) \
GST_DEBUG_OBJECT (demux, "Parsing " element " element at offset %" \
G_GUINT64_FORMAT, ebml->offset)
#define DEBUG_ELEMENT_STOP(demux, ebml, element, ret) \
GST_DEBUG_OBJECT (demux, "Parsing " element " element at offset %" \
G_GUINT64_FORMAT " finished with '%s'", ebml->offset, \
gst_flow_get_name (ret))
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);
/* element functions */
static void gst_matroska_demux_loop (GstPad * pad);
static gboolean gst_matroska_demux_element_send_event (GstElement * element,
GstEvent * event);
static gboolean gst_matroska_demux_element_query (GstElement * element,
GstQuery * query);
/* 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,
GstPad * pad, 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_finalize (GObject * object)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (object);
if (demux->src) {
g_ptr_array_free (demux->src, TRUE);
demux->src = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_matroska_demux_class_init (GstMatroskaDemuxClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GST_DEBUG_CATEGORY_INIT (matroskademux_debug, "matroskademux", 0,
"Matroska demuxer");
gobject_class->finalize = gst_matroska_demux_finalize;
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);
gstelement_class->query =
GST_DEBUG_FUNCPTR (gst_matroska_demux_element_query);
}
static void
gst_matroska_demux_init (GstMatroskaDemux * demux,
GstMatroskaDemuxClass * klass)
{
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. */
demux->src = 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);
g_free (track->codec_state);
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 */
g_assert (demux->src->len == demux->num_streams);
for (i = 0; i < demux->src->len; i++) {
GstMatroskaTrackContext *ostream = g_ptr_array_index (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;
GST_DEBUG_OBJECT (demux, "Resetting state");
/* reset input */
demux->state = GST_MATROSKA_DEMUX_STATE_START;
/* clean up existing streams */
if (demux->src) {
g_assert (demux->src->len == demux->num_streams);
for (i = 0; i < demux->src->len; i++) {
GstMatroskaTrackContext *context = g_ptr_array_index (demux->src, i);
if (context->pad != NULL)
gst_element_remove_pad (GST_ELEMENT (demux), context->pad);
gst_caps_replace (&context->caps, NULL);
gst_matroska_track_free (context);
}
g_ptr_array_free (demux->src, TRUE);
}
demux->src = g_ptr_array_new ();
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 */
if (demux->index) {
g_array_free (demux->index, TRUE);
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;
demux->attachments_parsed = FALSE;
g_list_foreach (demux->tags_parsed, (GFunc) gst_ebml_level_free, NULL);
g_list_free (demux->tags_parsed);
demux->tags_parsed = NULL;
gst_segment_init (&demux->segment, GST_FORMAT_TIME);
demux->duration = -1;
if (demux->close_segment) {
gst_event_unref (demux->close_segment);
demux->close_segment = NULL;
}
if (demux->new_segment) {
gst_event_unref (demux->new_segment);
demux->new_segment = NULL;
}
}
static gint
gst_matroska_demux_stream_from_num (GstMatroskaDemux * demux, guint track_num)
{
guint n;
g_assert (demux->src->len == demux->num_streams);
for (n = 0; n < demux->src->len; n++) {
GstMatroskaTrackContext *context = g_ptr_array_index (demux->src, n);
if (context->num == track_num) {
return n;
}
}
if (n == demux->num_streams)
GST_WARNING_OBJECT (demux,
"Failed to find corresponding pad for tracknum %d", track_num);
return -1;
}
static gint
gst_matroska_demux_encoding_cmp (GstMatroskaTrackEncoding * a,
GstMatroskaTrackEncoding * b)
{
if (b->order > a->order)
return 1;
else if (b->order < a->order)
return -1;
else
return 0;
}
static gboolean
gst_matroska_demux_encoding_order_unique (GArray * encodings, guint64 order)
{
gint i;
if (encodings == NULL || encodings->len == 0)
return TRUE;
for (i = 0; i < encodings->len; i++)
if (g_array_index (encodings, GstMatroskaTrackEncoding, i).order == order)
return FALSE;
return TRUE;
}
static GstFlowReturn
gst_matroska_demux_read_track_encoding (GstMatroskaDemux * demux,
GstMatroskaTrackContext * context)
{
GstMatroskaTrackEncoding enc = { 0, };
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret;
guint32 id;
DEBUG_ELEMENT_START (demux, ebml, "ContentEncoding");
/* Set default values */
enc.scope = 1;
/* All other default values are 0 */
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "ContentEncoding", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
if (demux->level_up) {
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;
if (!gst_matroska_demux_encoding_order_unique (context->encodings, num)) {
GST_ERROR_OBJECT (demux, "ContentEncodingOrder %" G_GUINT64_FORMAT
"is not unique for track %d", num, context->num);
ret = GST_FLOW_ERROR;
break;
}
GST_DEBUG_OBJECT (demux, "ContentEncodingOrder: %" G_GUINT64_FORMAT,
num);
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_ERROR_OBJECT (demux, "Invalid ContentEncodingScope %"
G_GUINT64_FORMAT, num);
ret = GST_FLOW_ERROR;
break;
}
GST_DEBUG_OBJECT (demux, "ContentEncodingScope: %" G_GUINT64_FORMAT,
num);
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_ERROR_OBJECT (demux, "Invalid ContentEncodingType %"
G_GUINT64_FORMAT, num);
ret = GST_FLOW_ERROR;
break;
} else if (num != 0) {
GST_ERROR_OBJECT (demux, "Encrypted tracks are not supported yet");
ret = GST_FLOW_ERROR;
break;
}
GST_DEBUG_OBJECT (demux, "ContentEncodingType: %" G_GUINT64_FORMAT,
num);
enc.type = num;
break;
}
case GST_MATROSKA_ID_CONTENTCOMPRESSION:{
DEBUG_ELEMENT_START (demux, ebml, "ContentCompression");
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;
if (demux->level_up) {
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;
}
if (num > 3) {
GST_ERROR_OBJECT (demux, "Invalid ContentCompAlgo %"
G_GUINT64_FORMAT, num);
ret = GST_FLOW_ERROR;
break;
}
GST_DEBUG_OBJECT (demux, "ContentCompAlgo: %" G_GUINT64_FORMAT,
num);
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;
GST_DEBUG_OBJECT (demux,
"ContentCompSettings of size %" G_GUINT64_FORMAT, size);
break;
}
default:
GST_WARNING_OBJECT (demux,
"Unknown ContentCompression subelement 0x%x - ignoring", id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
break;
DEBUG_ELEMENT_STOP (demux, ebml, "ContentCompression", ret);
}
case GST_MATROSKA_ID_CONTENTENCRYPTION:
GST_ERROR_OBJECT (demux, "Encrypted tracks not yet supported");
gst_ebml_read_skip (ebml);
ret = GST_FLOW_ERROR;
break;
default:
GST_WARNING_OBJECT (demux,
"Unknown ContentEncoding subelement 0x%x - ignoring", id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "ContentEncoding", ret);
if (ret != GST_FLOW_OK && ret != GST_FLOW_UNEXPECTED)
return ret;
/* TODO: Check if the combination of values is valid */
g_array_append_val (context->encodings, enc);
return ret;
}
static gboolean
gst_matroska_decompress_data (GstMatroskaTrackEncoding * enc,
guint8 ** data_out, guint * size_out,
GstMatroskaTrackCompressionAlgorithm algo)
{
guint8 *new_data = NULL;
guint new_size = 0;
guint8 *data = *data_out;
guint size = *size_out;
gboolean ret = TRUE;
if (algo == GST_MATROSKA_TRACK_COMPRESSION_ALGORITHM_ZLIB) {
#ifdef HAVE_ZLIB
/* zlib encoded data */
z_stream zstream;
guint orig_size;
int result;
orig_size = size;
zstream.zalloc = (alloc_func) 0;
zstream.zfree = (free_func) 0;
zstream.opaque = (voidpf) 0;
if (inflateInit (&zstream) != Z_OK) {
GST_WARNING ("zlib initialization failed.");
ret = FALSE;
goto out;
}
zstream.next_in = (Bytef *) data;
zstream.avail_in = orig_size;
new_size = orig_size;
new_data = g_malloc (new_size);
zstream.avail_out = new_size;
zstream.next_out = (Bytef *) new_data;
do {
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;
}
new_size += 4000;
new_data = g_realloc (new_data, new_size);
zstream.next_out = (Bytef *) (new_data + zstream.total_out);
zstream.avail_out += 4000;
} while (zstream.avail_in != 0 && result != Z_STREAM_END);
if (result != Z_STREAM_END) {
ret = FALSE;
goto out;
} else {
new_size = zstream.total_out;
inflateEnd (&zstream);
}
#else
GST_WARNING ("zlib encoded tracks not supported.");
ret = FALSE;
goto out;
#endif
} else if (algo == GST_MATROSKA_TRACK_COMPRESSION_ALGORITHM_BZLIB) {
#ifdef HAVE_BZ2
/* bzip2 encoded data */
bz_stream bzstream;
guint orig_size;
int result;
bzstream.bzalloc = NULL;
bzstream.bzfree = NULL;
bzstream.opaque = NULL;
orig_size = size;
if ((result = BZ2_bzDecompressInit (&bzstream, 0, 0)) != BZ_OK) {
GST_WARNING ("bzip2 initialization failed.");
ret = FALSE;
goto out;
}
bzstream.next_in = (char *) data;
bzstream.avail_in = orig_size;
new_size = orig_size;
new_data = g_malloc (new_size);
bzstream.avail_out = new_size;
bzstream.next_out = (char *) new_data;
do {
result = BZ2_bzDecompress (&bzstream);
if (result != BZ_OK && result != BZ_STREAM_END) {
GST_WARNING ("bzip2 decompression failed.");
g_free (new_data);
BZ2_bzDecompressEnd (&bzstream);
break;
}
new_size += 4000;
new_data = g_realloc (new_data, new_size);
bzstream.next_out = (char *) (new_data + bzstream.total_out_lo32);
bzstream.avail_out += 4000;
} while (bzstream.avail_in != 0 && result != BZ_STREAM_END);
if (result != BZ_STREAM_END) {
ret = FALSE;
goto out;
} else {
new_size = bzstream.total_out_lo32;
BZ2_bzDecompressEnd (&bzstream);
}
#else
GST_WARNING ("bzip2 encoded tracks not supported.");
ret = FALSE;
goto out;
#endif
} else if (algo == GST_MATROSKA_TRACK_COMPRESSION_ALGORITHM_LZO1X) {
/* lzo encoded data */
int result;
int orig_size, out_size;
orig_size = size;
out_size = size;
new_size = size;
new_data = g_malloc (new_size);
do {
orig_size = size;
out_size = new_size;
result = lzo1x_decode (new_data, &out_size, data, &orig_size);
if (orig_size > 0) {
new_size += 4000;
new_data = g_realloc (new_data, new_size);
}
} while (orig_size > 0 && result == LZO_OUTPUT_FULL);
new_size -= out_size;
if (result != LZO_OUTPUT_FULL) {
GST_WARNING ("lzo decompression failed");
g_free (new_data);
ret = FALSE;
goto out;
}
} else if (algo == GST_MATROSKA_TRACK_COMPRESSION_ALGORITHM_HEADERSTRIP) {
/* header stripped encoded data */
if (enc->comp_settings_length > 0) {
new_data = g_malloc (size + enc->comp_settings_length);
new_size = size + enc->comp_settings_length;
memcpy (new_data, enc->comp_settings, enc->comp_settings_length);
memcpy (new_data + enc->comp_settings_length, data, size);
}
} else {
g_assert_not_reached ();
}
out:
if (!ret) {
*data_out = NULL;
*size_out = 0;
} else {
*data_out = new_data;
*size_out = new_size;
}
return ret;
}
static gboolean
gst_matroska_decode_data (GArray * encodings, guint8 ** data_out,
guint * size_out, GstMatroskaTrackEncodingScope scope, gboolean free)
{
guint8 *data;
guint size;
gboolean ret = TRUE;
gint i;
g_return_val_if_fail (encodings != NULL, FALSE);
g_return_val_if_fail (data_out != NULL && *data_out != NULL, FALSE);
g_return_val_if_fail (size_out != NULL, FALSE);
data = *data_out;
size = *size_out;
for (i = 0; i < encodings->len; i++) {
GstMatroskaTrackEncoding *enc =
&g_array_index (encodings, GstMatroskaTrackEncoding, i);
guint8 *new_data = NULL;
guint new_size = 0;
if ((enc->scope & scope) == 0)
continue;
/* Encryption not supported yet */
if (enc->type != 0) {
ret = FALSE;
break;
}
new_data = data;
new_size = size;
ret =
gst_matroska_decompress_data (enc, &new_data, &new_size,
enc->comp_algo);
if (!ret)
break;
if ((data == *data_out && free) || (data != *data_out))
g_free (data);
data = new_data;
size = new_size;
}
if (!ret) {
if ((data == *data_out && free) || (data != *data_out))
g_free (data);
*data_out = NULL;
*size_out = 0;
} else {
*data_out = data;
*size_out = size;
}
return ret;
}
static GstBuffer *
gst_matroska_decode_buffer (GstMatroskaTrackContext * context, GstBuffer * buf)
{
guint8 *data;
guint size;
GstBuffer *new_buf;
g_return_val_if_fail (GST_IS_BUFFER (buf), NULL);
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
g_return_val_if_fail (data != NULL && size > 0, buf);
if (gst_matroska_decode_data (context->encodings, &data, &size,
GST_MATROSKA_TRACK_ENCODING_SCOPE_FRAME, FALSE)) {
new_buf = gst_buffer_new ();
GST_BUFFER_MALLOCDATA (new_buf) = (guint8 *) data;
GST_BUFFER_DATA (new_buf) = (guint8 *) data;
GST_BUFFER_SIZE (new_buf) = size;
gst_buffer_unref (buf);
buf = new_buf;
return buf;
} else {
gst_buffer_unref (buf);
return NULL;
}
}
static GstFlowReturn
gst_matroska_decode_content_encodings (GArray * encodings)
{
gint i;
if (encodings == NULL)
return GST_FLOW_OK;
for (i = 0; i < encodings->len; i++) {
GstMatroskaTrackEncoding *enc =
&g_array_index (encodings, GstMatroskaTrackEncoding, i);
GstMatroskaTrackEncoding *enc2;
guint8 *data = NULL;
guint size;
if ((enc->scope & GST_MATROSKA_TRACK_ENCODING_SCOPE_NEXT_CONTENT_ENCODING)
== 0)
continue;
/* Encryption not supported yet */
if (enc->type != 0)
return GST_FLOW_ERROR;
if (i + 1 >= encodings->len)
return GST_FLOW_ERROR;
enc2 = &g_array_index (encodings, GstMatroskaTrackEncoding, i + 1);
if (enc->comp_settings_length == 0)
continue;
data = enc->comp_settings;
size = enc->comp_settings_length;
if (!gst_matroska_decompress_data (enc, &data, &size, enc->comp_algo))
return GST_FLOW_ERROR;
g_free (enc->comp_settings);
enc->comp_settings = data;
enc->comp_settings_length = size;
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_matroska_demux_read_track_encodings (GstMatroskaDemux * demux,
GstMatroskaTrackContext * context)
{
GstFlowReturn ret;
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
DEBUG_ELEMENT_START (demux, ebml, "ContentEncodings");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "ContentEncodings", ret);
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;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_CONTENTENCODING:
ret = gst_matroska_demux_read_track_encoding (demux, context);
break;
default:
GST_WARNING_OBJECT (demux,
"Unknown ContentEncodings subelement 0x%x - ignoring", id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "ContentEncodings", ret);
if (ret != GST_FLOW_OK && ret != GST_FLOW_UNEXPECTED)
return ret;
/* Sort encodings according to their order */
g_array_sort (context->encodings,
(GCompareFunc) gst_matroska_demux_encoding_cmp);
return gst_matroska_decode_content_encodings (context->encodings);
}
static gboolean
gst_matroska_demux_tracknumber_unique (GstMatroskaDemux * demux, guint64 num)
{
gint i;
g_assert (demux->src->len == demux->num_streams);
for (i = 0; i < demux->src->len; i++) {
GstMatroskaTrackContext *context = g_ptr_array_index (demux->src, i);
if (context->num == num)
return FALSE;
}
return TRUE;
}
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;
DEBUG_ELEMENT_START (demux, ebml, "TrackEntry");
/* start with the master */
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "TrackEntry", ret);
return ret;
}
/* allocate generic... if we know the type, we'll g_renew()
* with the precise type */
context = g_new0 (GstMatroskaTrackContext, 1);
g_ptr_array_add (demux->src, 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++;
g_assert (demux->src->len == demux->num_streams);
GST_DEBUG_OBJECT (demux, "Stream number %d", context->index);
/* 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;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* 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_ERROR_OBJECT (demux, "Invalid TrackNumber 0");
ret = GST_FLOW_ERROR;
break;
} else if (!gst_matroska_demux_tracknumber_unique (demux, num)) {
GST_ERROR_OBJECT (demux, "TrackNumber %" G_GUINT64_FORMAT
" is not unique", num);
ret = GST_FLOW_ERROR;
break;
}
GST_DEBUG_OBJECT (demux, "TrackNumber: %" G_GUINT64_FORMAT, num);
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_ERROR_OBJECT (demux, "Invalid TrackUID 0");
ret = GST_FLOW_ERROR;
break;
}
GST_DEBUG_OBJECT (demux, "TrackUID: %" G_GUINT64_FORMAT, num);
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_OBJECT (demux,
"More than one tracktype defined in a TrackEntry - skipping");
break;
} else if (track_type < 1 || track_type > 254) {
GST_WARNING_OBJECT (demux, "Invalid TrackType %" G_GUINT64_FORMAT,
track_type);
break;
}
GST_DEBUG_OBJECT (demux, "TrackType: %" G_GUINT64_FORMAT, track_type);
/* 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_OBJECT (demux,
"Unknown or unsupported TrackType %" G_GUINT64_FORMAT,
track_type);
context->type = 0;
break;
}
g_ptr_array_index (demux->src, demux->num_streams - 1) = context;
break;
}
/* tracktype specific stuff for video */
case GST_MATROSKA_ID_TRACKVIDEO:{
GstMatroskaTrackVideoContext *videocontext;
DEBUG_ELEMENT_START (demux, ebml, "TrackVideo");
if (!gst_matroska_track_init_video_context (&context)) {
GST_WARNING_OBJECT (demux,
"TrackVideo element 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;
g_ptr_array_index (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;
if (demux->level_up) {
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_OBJECT (demux, "Invalid TrackDefaultDuration 0");
break;
}
GST_DEBUG_OBJECT (demux,
"TrackDefaultDuration: %" G_GUINT64_FORMAT, num);
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_OBJECT (demux, "Invalid TrackVideoFPS %lf", num);
break;
}
GST_DEBUG_OBJECT (demux, "TrackVideoFrameRate: %lf", num);
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_OBJECT (demux, "Invalid TrackVideoDisplayWidth 0");
break;
}
GST_DEBUG_OBJECT (demux,
"TrackVideoDisplayWidth: %" G_GUINT64_FORMAT, num);
videocontext->display_width = 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_OBJECT (demux, "Invalid TrackVideoDisplayHeight 0");
break;
}
GST_DEBUG_OBJECT (demux,
"TrackVideoDisplayHeight: %" G_GUINT64_FORMAT, num);
videocontext->display_height = 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_OBJECT (demux, "Invalid TrackVideoPixelWidth 0");
break;
}
GST_DEBUG_OBJECT (demux,
"TrackVideoPixelWidth: %" G_GUINT64_FORMAT, num);
videocontext->pixel_width = 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_OBJECT (demux, "Invalid TrackVideoPixelHeight 0");
break;
}
GST_DEBUG_OBJECT (demux,
"TrackVideoPixelHeight: %" G_GUINT64_FORMAT, num);
videocontext->pixel_height = 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;
GST_DEBUG_OBJECT (demux, "TrackVideoInterlaced: %d",
(context->flags & GST_MATROSKA_VIDEOTRACK_INTERLACED) ? 1 :
0);
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_OBJECT (demux,
"Unknown TrackVideoAspectRatioType 0x%x", (guint) num);
break;
}
GST_DEBUG_OBJECT (demux,
"TrackVideoAspectRatioType: %" G_GUINT64_FORMAT, num);
videocontext->asr_mode = num;
break;
}
/* colourspace (only matters for raw video) fourcc */
case GST_MATROSKA_ID_VIDEOCOLOURSPACE:{
guint8 *data;
guint64 datalen;
if ((ret =
gst_ebml_read_binary (ebml, &id, &data,
&datalen)) != GST_FLOW_OK)
break;
if (datalen != 4) {
GST_WARNING_OBJECT (demux,
"Invalid TrackVideoColourSpace length %" G_GUINT64_FORMAT,
datalen);
break;
}
memcpy (&videocontext->fourcc, data, 4);
GST_DEBUG_OBJECT (demux,
"TrackVideoColourSpace: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (videocontext->fourcc));
break;
}
default:
GST_WARNING_OBJECT (demux,
"Unknown TrackVideo subelement 0x%x - ignoring", id);
/* fall through */
case GST_MATROSKA_ID_VIDEOSTEREOMODE:
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:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "TrackVideo", ret);
break;
}
/* tracktype specific stuff for audio */
case GST_MATROSKA_ID_TRACKAUDIO:{
GstMatroskaTrackAudioContext *audiocontext;
DEBUG_ELEMENT_START (demux, ebml, "TrackAudio");
if (!gst_matroska_track_init_audio_context (&context)) {
GST_WARNING_OBJECT (demux,
"TrackAudio element in non-audio track - ignoring track");
ret = GST_FLOW_ERROR;
break;
}
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
break;
audiocontext = (GstMatroskaTrackAudioContext *) context;
g_ptr_array_index (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;
if (demux->level_up) {
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_OBJECT (demux,
"Invalid TrackAudioSamplingFrequency %lf", num);
break;
}
GST_DEBUG_OBJECT (demux, "TrackAudioSamplingFrequency: %lf", 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_OBJECT (demux, "Invalid TrackAudioBitDepth 0");
break;
}
GST_DEBUG_OBJECT (demux, "TrackAudioBitDepth: %" G_GUINT64_FORMAT,
num);
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_OBJECT (demux, "Invalid TrackAudioChannels 0");
break;
}
GST_DEBUG_OBJECT (demux, "TrackAudioChannels: %" G_GUINT64_FORMAT,
num);
audiocontext->channels = num;
break;
}
default:
GST_WARNING_OBJECT (demux,
"Unknown TrackAudio subelement 0x%x - ignoring", id);
/* fall through */
case GST_MATROSKA_ID_AUDIOCHANNELPOSITIONS:
case GST_MATROSKA_ID_AUDIOOUTPUTSAMPLINGFREQ:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "TrackAudio", ret);
break;
}
/* codec identifier */
case GST_MATROSKA_ID_CODECID:{
gchar *text;
if ((ret = gst_ebml_read_ascii (ebml, &id, &text)) != GST_FLOW_OK)
break;
GST_DEBUG_OBJECT (demux, "CodecID: %s", GST_STR_NULL (text));
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;
context->codec_priv = data;
context->codec_priv_size = size;
GST_DEBUG_OBJECT (demux, "CodecPrivate of size %" G_GUINT64_FORMAT,
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;
GST_DEBUG_OBJECT (demux, "CodecName: %s", GST_STR_NULL (text));
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_DEBUG_OBJECT (demux, "TrackName: %s", GST_STR_NULL (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;
/* fre-ca => fre */
if (strlen (context->language) >= 4 && context->language[3] == '-')
context->language[3] = '\0';
GST_DEBUG_OBJECT (demux, "TrackLanguage: %s",
GST_STR_NULL (context->language));
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;
GST_DEBUG_OBJECT (demux, "TrackEnabled: %d",
(context->flags & GST_MATROSKA_TRACK_ENABLED) ? 1 : 0);
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;
GST_DEBUG_OBJECT (demux, "TrackDefault: %d",
(context->flags & GST_MATROSKA_TRACK_ENABLED) ? 1 : 0);
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;
GST_DEBUG_OBJECT (demux, "TrackForced: %d",
(context->flags & GST_MATROSKA_TRACK_ENABLED) ? 1 : 0);
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;
GST_DEBUG_OBJECT (demux, "TrackLacing: %d",
(context->flags & GST_MATROSKA_TRACK_ENABLED) ? 1 : 0);
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_OBJECT (demux, "Invalid TrackDefaultDuration 0");
break;
}
GST_DEBUG_OBJECT (demux, "TrackDefaultDuration: %" G_GUINT64_FORMAT,
num);
context->default_duration = num;
break;
}
case GST_MATROSKA_ID_CONTENTENCODINGS:{
ret = gst_matroska_demux_read_track_encodings (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_OBJECT (demux, "Invalid TrackTimeCodeScale %lf", num);
break;
}
GST_DEBUG_OBJECT (demux, "TrackTimeCodeScale: %lf", num);
context->timecodescale = num;
break;
}
default:
GST_WARNING ("Unknown TrackEntry subelement 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:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "TrackEntry", ret);
/* Decode codec private data if necessary */
if (context->encodings && context->encodings->len > 0 && context->codec_priv
&& context->codec_priv_size > 0) {
if (!gst_matroska_decode_data (context->encodings,
(guint8 **) & context->codec_priv, &context->codec_priv_size,
GST_MATROSKA_TRACK_ENCODING_SCOPE_CODEC_DATA, TRUE)) {
GST_WARNING_OBJECT (demux, "Decoding codec private data failed");
ret = GST_FLOW_ERROR;
}
}
if (context->type == 0 || context->codec_id == NULL || (ret != GST_FLOW_OK
&& ret != GST_FLOW_UNEXPECTED)) {
if (ret == GST_FLOW_OK || ret == GST_FLOW_UNEXPECTED)
GST_WARNING_OBJECT (ebml, "Unknown stream/codec in track entry header");
demux->num_streams--;
g_ptr_array_remove_index (demux->src, demux->num_streams);
g_assert (demux->src->len == demux->num_streams);
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_set_element_private (context->pad, context);
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_query (GstMatroskaDemux * demux, GstPad * pad,
GstQuery * query)
{
gboolean res = FALSE;
GstMatroskaTrackContext *context = NULL;
if (pad) {
context = gst_pad_get_element_private (pad);
}
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gst_query_parse_position (query, &format, NULL);
if (format == GST_FORMAT_TIME) {
GST_OBJECT_LOCK (demux);
if (context)
gst_query_set_position (query, GST_FORMAT_TIME, context->pos);
else
gst_query_set_position (query, GST_FORMAT_TIME,
demux->segment.last_stop);
GST_OBJECT_UNLOCK (demux);
} else if (format == GST_FORMAT_DEFAULT && context
&& context->default_duration) {
GST_OBJECT_LOCK (demux);
gst_query_set_position (query, GST_FORMAT_DEFAULT,
context->pos / context->default_duration);
GST_OBJECT_UNLOCK (demux);
} else {
GST_DEBUG_OBJECT (demux,
"only position query in TIME and DEFAULT format is supported");
}
res = TRUE;
break;
}
case GST_QUERY_DURATION:
{
GstFormat format;
gst_query_parse_duration (query, &format, NULL);
if (format == GST_FORMAT_TIME) {
GST_OBJECT_LOCK (demux);
gst_query_set_duration (query, GST_FORMAT_TIME, demux->duration);
GST_OBJECT_UNLOCK (demux);
} else if (format == GST_FORMAT_DEFAULT && context
&& context->default_duration) {
GST_OBJECT_LOCK (demux);
gst_query_set_duration (query, GST_FORMAT_DEFAULT,
demux->duration / context->default_duration);
GST_OBJECT_UNLOCK (demux);
} else {
GST_DEBUG_OBJECT (demux,
"only duration query in TIME and DEFAULT format is supported");
}
res = TRUE;
break;
}
default:
res = gst_pad_query_default (pad, query);
break;
}
return res;
}
static gboolean
gst_matroska_demux_element_query (GstElement * element, GstQuery * query)
{
return gst_matroska_demux_query (GST_MATROSKA_DEMUX (element), NULL, query);
}
static gboolean
gst_matroska_demux_handle_src_query (GstPad * pad, GstQuery * query)
{
gboolean ret;
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad));
ret = gst_matroska_demux_query (demux, pad, query);
gst_object_unref (demux);
return ret;
}
static GstMatroskaIndex *
gst_matroskademux_do_index_seek (GstMatroskaDemux * demux, guint track,
gint64 seek_pos, gint64 segment_stop, gboolean keyunit)
{
GstMatroskaIndex *entry = NULL;
guint n;
if (!demux->index || !demux->index->len)
return NULL;
/* find entry just before or at the requested position */
for (n = 0; n < demux->index->len; n++) {
GstMatroskaIndex *index;
index = &g_array_index (demux->index, GstMatroskaIndex, n);
if (index->time <= seek_pos && ((track && index->track == track) || !track))
entry = index;
else
break;
}
if (keyunit) {
/* find index entry closest to the requested position.
* n contains the index of the GstMatroskaIndex after
* entry
*/
if (entry && n < demux->index->len) {
GstMatroskaIndex *index;
GstClockTimeDiff d_this, d_entry;
do {
index = &g_array_index (demux->index, GstMatroskaIndex, n);
} while (n++ < demux->index->len && ((track && index->track == track)
|| !track));
d_entry = GST_CLOCK_DIFF (entry->time, seek_pos);
if (d_entry < 0)
d_entry = -d_entry;
d_this = GST_CLOCK_DIFF (index->time, seek_pos);
if (d_this < 0)
d_this = -d_this;
if (d_this < d_entry &&
(index->time < segment_stop || segment_stop == -1)) {
entry = index;
}
}
}
if (entry == NULL && track)
entry = gst_matroskademux_do_index_seek (demux, 0,
seek_pos, segment_stop, keyunit);
return 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));
g_assert (demux->src->len == demux->num_streams);
for (i = 0; i < demux->src->len; i++) {
GstMatroskaTrackContext *stream;
stream = g_ptr_array_index (demux->src, i);
gst_event_ref (event);
gst_pad_push_event (stream->pad, event);
if (stream->pending_tags) {
GST_DEBUG_OBJECT (demux, "Sending pending_tags %p for pad %s:%s",
stream->pending_tags, GST_DEBUG_PAD_NAME (stream->pad));
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, NULL, event);
} else {
GST_WARNING_OBJECT (demux, "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,
GstPad * pad, GstEvent * event)
{
GstMatroskaIndex *entry;
GstSeekFlags flags;
GstSeekType cur_type, stop_type;
GstFormat format;
gboolean flush, keyunit;
gdouble rate;
gint64 cur, stop;
gint64 segment_start, segment_stop;
gint i;
guint track = 0;
if (pad) {
GstMatroskaTrackContext *context = gst_pad_get_element_private (pad);
track = context->num;
}
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_OBJECT (demux, "Can only seek on TIME");
return FALSE;
}
/* cannot yet do backwards playback */
if (rate <= 0.0) {
GST_DEBUG_OBJECT (demux, "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, 0, cur, -1, FALSE)) {
GST_DEBUG_OBJECT (demux, "No matching seek entry in index");
GST_OBJECT_UNLOCK (demux);
return FALSE;
}
GST_DEBUG_OBJECT (demux, "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_OBJECT (demux, "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;
/* 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 (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) {
if (GST_CLOCK_TIME_IS_VALID (segment_stop)
&& GST_CLOCK_TIME_IS_VALID (stop))
segment_stop += stop;
else
segment_stop = -1;
}
GST_DEBUG_OBJECT (demux,
"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, track, segment_start,
segment_stop, keyunit);
if (!entry) {
GST_DEBUG_OBJECT (demux, "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_OBJECT (demux, "Failed to seek to offset %" G_GUINT64_FORMAT,
entry->pos + demux->ebml_segment_start);
goto seek_error;
}
GST_DEBUG_OBJECT (demux, "Seeked to offset %" G_GUINT64_FORMAT, entry->pos +
demux->ebml_segment_start);
if (keyunit) {
GST_DEBUG_OBJECT (demux, "seek to key unit, adjusting segment start to %"
GST_TIME_FORMAT, GST_TIME_ARGS (entry->time));
segment_start = entry->time;
}
GST_OBJECT_UNLOCK (demux);
if (flush) {
GST_DEBUG_OBJECT (demux, "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) {
GST_DEBUG_OBJECT (demux, "Closing currently running segment");
GST_OBJECT_LOCK (demux);
if (demux->close_segment)
gst_event_unref (demux->close_segment);
demux->close_segment = gst_event_new_new_segment (TRUE,
demux->segment.rate, GST_FORMAT_TIME, demux->segment.start,
demux->segment.last_stop, demux->segment.last_stop);
GST_OBJECT_UNLOCK (demux);
}
GST_OBJECT_LOCK (demux);
GST_DEBUG_OBJECT (demux, "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);
}
GST_OBJECT_LOCK (demux);
if (demux->new_segment)
gst_event_unref (demux->new_segment);
demux->new_segment = gst_event_new_new_segment (FALSE, rate,
GST_FORMAT_TIME, segment_start, segment_stop, segment_start);
GST_OBJECT_UNLOCK (demux);
/* update the time */
g_assert (demux->src->len == demux->num_streams);
for (i = 0; i < demux->src->len; i++) {
GstMatroskaTrackContext *context = g_ptr_array_index (demux->src, i);
context->pos = entry->time;
context->set_discont = TRUE;
context->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_OBJECT (demux, "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, pad, event);
gst_event_unref (event);
break;
/* events we don't need to handle */
case GST_EVENT_NAVIGATION:
case GST_EVENT_QOS:
gst_event_unref (event);
res = FALSE;
break;
case GST_EVENT_LATENCY:
default:
res = gst_pad_push_event (demux->sinkpad, event);
break;
}
gst_object_unref (demux);
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;
GST_DEBUG_OBJECT (demux, "Init stream");
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_OBJECT (demux,
"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;
}
GST_DEBUG_OBJECT (demux, "Found Segment start at offset %" G_GUINT64_FORMAT,
ebml->offset);
/* 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;
DEBUG_ELEMENT_START (demux, ebml, "Tracks");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "Tracks", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
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 Track subelement 0x%x - ignoring", id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "Tracks", ret);
demux->tracks_parsed = TRUE;
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_index_cuetrack (GstMatroskaDemux * demux,
guint * nentries)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
GstFlowReturn ret;
GstMatroskaIndex idx;
idx.pos = (guint64) - 1;
idx.track = 0;
idx.time = GST_CLOCK_TIME_NONE;
idx.block = 1;
DEBUG_ELEMENT_START (demux, ebml, "CueTrackPositions");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "CueTrackPositions", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
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)
break;
if (num == 0) {
idx.track = 0;
GST_WARNING_OBJECT (demux, "Invalid CueTrack 0");
break;
}
GST_DEBUG_OBJECT (demux, "CueTrack: %" G_GUINT64_FORMAT, num);
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)
break;
if (num > G_MAXINT64) {
GST_WARNING_OBJECT (demux, "CueClusterPosition %" G_GUINT64_FORMAT
" too large", num);
break;
}
idx.pos = num;
break;
}
/* number of block in the cluster */
case GST_MATROSKA_ID_CUEBLOCKNUMBER:
{
guint64 num;
if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK)
break;
if (num == 0) {
GST_WARNING_OBJECT (demux, "Invalid CueBlockNumber 0");
break;
}
GST_DEBUG_OBJECT (demux, "CueBlockNumber: %" G_GUINT64_FORMAT, num);
idx.block = num;
break;
}
default:
GST_WARNING ("Unknown CueTrackPositions subelement 0x%x - ignoring",
id);
/* fall-through */
case GST_MATROSKA_ID_CUECODECSTATE:
case GST_MATROSKA_ID_CUEREFERENCE:
if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK)
break;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "CueTrackPositions", ret);
if ((ret == GST_FLOW_OK || ret == GST_FLOW_UNEXPECTED)
&& idx.pos != (guint64) - 1 && idx.track > 0) {
g_array_append_val (demux->index, idx);
(*nentries)++;
} else if (ret == GST_FLOW_OK || ret == GST_FLOW_UNEXPECTED) {
GST_DEBUG_OBJECT (demux, "CueTrackPositions without valid content");
}
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_index_pointentry (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
GstFlowReturn ret;
GstClockTime time = GST_CLOCK_TIME_NONE;
guint nentries = 0;
DEBUG_ELEMENT_START (demux, ebml, "CuePoint");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "CuePoint", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* one single index entry ('point') */
case GST_MATROSKA_ID_CUETIME:
{
if ((ret = gst_ebml_read_uint (ebml, &id, &time)) != GST_FLOW_OK)
break;
GST_DEBUG_OBJECT (demux, "CueTime: %" G_GUINT64_FORMAT, time);
time = time * demux->time_scale;
break;
}
/* position in the file + track to which it belongs */
case GST_MATROSKA_ID_CUETRACKPOSITIONS:
{
if ((ret =
gst_matroska_demux_parse_index_cuetrack (demux,
&nentries)) != GST_FLOW_OK)
break;
break;
}
default:
GST_WARNING_OBJECT (demux,
"Unknown CuePoint subelement 0x%x - ignoring", id);
if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK)
break;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "CuePoint", ret);
if (nentries > 0) {
if (time == GST_CLOCK_TIME_NONE) {
GST_WARNING_OBJECT (demux, "CuePoint without valid time");
g_array_remove_range (demux->index, demux->index->len - nentries,
nentries);
} else {
gint i;
for (i = demux->index->len - nentries; i < demux->index->len; i++) {
GstMatroskaIndex *idx =
&g_array_index (demux->index, GstMatroskaIndex, i);
idx->time = time;
GST_DEBUG_OBJECT (demux, "Index entry: pos=%" G_GUINT64_FORMAT
", time=%" GST_TIME_FORMAT ", track=%u, block=%u", idx->pos,
GST_TIME_ARGS (idx->time), (guint) idx->track, (guint) idx->block);
}
}
} else {
GST_DEBUG_OBJECT (demux, "Empty CuePoint");
}
return ret;
}
static gint
gst_matroska_index_compare (GstMatroskaIndex * i1, GstMatroskaIndex * i2)
{
if (i1->time < i2->time)
return -1;
else if (i1->time > i2->time)
return 1;
else if (i1->block < i2->block)
return -1;
else if (i1->block > i2->block)
return 1;
else
return 0;
}
static GstFlowReturn
gst_matroska_demux_parse_index (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
GstFlowReturn ret = GST_FLOW_OK;
if (demux->index)
g_array_free (demux->index, TRUE);
demux->index =
g_array_sized_new (FALSE, FALSE, sizeof (GstMatroskaIndex), 128);
DEBUG_ELEMENT_START (demux, ebml, "Cues");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "Cues", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
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);
break;
default:
GST_WARNING ("Unknown Cues subelement 0x%x - ignoring", id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "Cues", ret);
/* Sort index by time, smallest time first, for easier searching */
g_array_sort (demux->index, (GCompareFunc) gst_matroska_index_compare);
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;
DEBUG_ELEMENT_START (demux, ebml, "SegmentInfo");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "SegmentInfo", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
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;
GST_DEBUG_OBJECT (demux, "TimeCodeScale: %" G_GUINT64_FORMAT, num);
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_OBJECT (demux, "Invalid duration %lf", num);
break;
}
GST_DEBUG_OBJECT (demux, "Duration: %lf", num);
dur = gst_gdouble_to_guint64 (num *
gst_guint64_to_gdouble (demux->time_scale));
if (GST_CLOCK_TIME_IS_VALID (dur) && dur <= G_MAXINT64)
demux->duration = dur;
break;
}
case GST_MATROSKA_ID_WRITINGAPP:{
gchar *text;
if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK)
break;
GST_DEBUG_OBJECT (demux, "WritingApp: %s", GST_STR_NULL (text));
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;
GST_DEBUG_OBJECT (demux, "MuxingApp: %s", GST_STR_NULL (text));
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;
GST_DEBUG_OBJECT (demux, "DateUTC: %" G_GINT64_FORMAT, time);
demux->created = time;
break;
}
default:
GST_WARNING_OBJECT (demux,
"Unknown SegmentInfo subelement 0x%x - ignoring", id);
/* fall through */
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:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "SegmentInfo", ret);
demux->segmentinfo_parsed = TRUE;
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_metadata_id_simple_tag (GstMatroskaDemux * demux,
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;
DEBUG_ELEMENT_START (demux, ebml, "SimpleTag");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "SimpleTag", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
/* read all sub-entries */
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
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);
GST_DEBUG_OBJECT (demux, "TagName: %s", GST_STR_NULL (tag));
break;
case GST_MATROSKA_ID_TAGSTRING:
g_free (value);
value = NULL;
ret = gst_ebml_read_utf8 (ebml, &id, &value);
GST_DEBUG_OBJECT (demux, "TagString: %s", GST_STR_NULL (value));
break;
default:
GST_WARNING_OBJECT (demux,
"Unknown SimpleTag subelement 0x%x - ignoring", id);
/* fall-through */
case GST_MATROSKA_ID_TAGLANGUAGE:
case GST_MATROSKA_ID_TAGDEFAULT:
case GST_MATROSKA_ID_TAGBINARY:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "SimpleTag", ret);
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 dest = { 0, };
GType dest_type = gst_tag_get_type (tagname_gst);
g_value_init (&dest, dest_type);
if (gst_value_deserialize (&dest, value)) {
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 '%s'", tag, value,
g_type_name (dest_type));
}
g_value_unset (&dest);
break;
}
}
}
g_free (tag);
g_free (value);
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_metadata_id_tag (GstMatroskaDemux * demux,
GstTagList ** p_taglist)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
GstFlowReturn ret;
DEBUG_ELEMENT_START (demux, ebml, "Tag");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "Tag", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
/* read all sub-entries */
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
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, p_taglist);
break;
default:
GST_WARNING_OBJECT (demux, "Unknown Tag subelement 0x%x - ignoring",
id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "Tag", ret);
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_metadata (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstTagList *taglist;
GstFlowReturn ret = GST_FLOW_OK;
guint32 id;
GList *l;
GstEbmlLevel *curlevel;
/* Can't be NULL at this point */
g_assert (ebml->level != NULL);
curlevel = ebml->level->data;
/* Make sure we don't parse a tags element twice and
* post it's tags twice */
for (l = demux->tags_parsed; l; l = l->next) {
GstEbmlLevel *level = l->data;
if (ebml->level)
curlevel = ebml->level->data;
else
break;
if (level->start == curlevel->start && level->length == curlevel->length) {
GST_DEBUG_OBJECT (demux, "Skipping already parsed Tags at offset %"
G_GUINT64_FORMAT, ebml->offset);
ret = gst_ebml_read_skip (ebml);
return ret;
}
}
DEBUG_ELEMENT_START (demux, ebml, "Tags");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "Tags", ret);
return ret;
}
taglist = gst_tag_list_new ();
/* TODO: g_slice_dup() if we depend on GLib 2.14 */
curlevel = g_slice_new (GstEbmlLevel);
memcpy (curlevel, ebml->level->data, sizeof (GstEbmlLevel));
demux->tags_parsed = g_list_prepend (demux->tags_parsed, curlevel);
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_TAG:
ret = gst_matroska_demux_parse_metadata_id_tag (demux, &taglist);
break;
default:
GST_WARNING_OBJECT (demux, "Unknown Tags subelement 0x%x - ignoring",
id);
/* 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;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "Tags", ret);
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_attached_file (GstMatroskaDemux * demux,
GstTagList * taglist)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
GstFlowReturn ret;
gchar *description = NULL;
gchar *filename = NULL;
gchar *mimetype = NULL;
guint8 *data = NULL;
guint64 datalen = 0;
DEBUG_ELEMENT_START (demux, ebml, "AttachedFile");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "AttachedFile", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
/* read all sub-entries */
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_FILEDESCRIPTION:
if (description) {
GST_WARNING_OBJECT (demux, "FileDescription can only appear once");
break;
}
ret = gst_ebml_read_utf8 (ebml, &id, &description);
GST_DEBUG_OBJECT (demux, "FileDescription: %s",
GST_STR_NULL (description));
break;
case GST_MATROSKA_ID_FILENAME:
if (filename) {
GST_WARNING_OBJECT (demux, "FileName can only appear once");
break;
}
ret = gst_ebml_read_utf8 (ebml, &id, &filename);
GST_DEBUG_OBJECT (demux, "FileName: %s", GST_STR_NULL (filename));
break;
case GST_MATROSKA_ID_FILEMIMETYPE:
if (mimetype) {
GST_WARNING_OBJECT (demux, "FileMimeType can only appear once");
break;
}
ret = gst_ebml_read_ascii (ebml, &id, &mimetype);
GST_DEBUG_OBJECT (demux, "FileMimeType: %s", GST_STR_NULL (mimetype));
break;
case GST_MATROSKA_ID_FILEDATA:
if (data) {
GST_WARNING_OBJECT (demux, "FileData can only appear once");
break;
}
ret = gst_ebml_read_binary (ebml, &id, &data, &datalen);
GST_DEBUG_OBJECT (demux, "FileData of size %" G_GUINT64_FORMAT,
datalen);
break;
default:
GST_WARNING_OBJECT (demux,
"Unknown AttachedFile subelement 0x%x - ignoring", id);
/* fall through */
case GST_MATROSKA_ID_FILEUID:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "AttachedFile", ret);
if (filename && mimetype && data && datalen > 0) {
GstTagImageType image_type = GST_TAG_IMAGE_TYPE_NONE;
GstBuffer *tagbuffer = NULL;
GstCaps *caps;
gchar *filename_lc = g_utf8_strdown (filename, -1);
GST_DEBUG_OBJECT (demux, "Creating tag for attachment with filename '%s', "
"mimetype '%s', description '%s', size %" G_GUINT64_FORMAT, filename,
mimetype, GST_STR_NULL (description), datalen);
/* TODO: better heuristics for different image types */
if (strstr (filename_lc, "cover")) {
if (strstr (filename_lc, "back"))
image_type = GST_TAG_IMAGE_TYPE_BACK_COVER;
else
image_type = GST_TAG_IMAGE_TYPE_FRONT_COVER;
} else if (g_str_has_prefix (mimetype, "image/") ||
g_str_has_suffix (filename_lc, "png") ||
g_str_has_suffix (filename_lc, "jpg") ||
g_str_has_suffix (filename_lc, "jpeg") ||
g_str_has_suffix (filename_lc, "gif") ||
g_str_has_suffix (filename_lc, "bmp")) {
image_type = GST_TAG_IMAGE_TYPE_UNDEFINED;
}
g_free (filename_lc);
/* First try to create an image tag buffer from this */
if (image_type != GST_TAG_IMAGE_TYPE_NONE) {
tagbuffer =
gst_tag_image_data_to_image_buffer (data, datalen, image_type);
if (!tagbuffer)
image_type = GST_TAG_IMAGE_TYPE_NONE;
}
/* if this failed create an attachment buffer */
if (!tagbuffer) {
tagbuffer = gst_buffer_new_and_alloc (datalen);
memcpy (GST_BUFFER_DATA (tagbuffer), data, datalen);
GST_BUFFER_SIZE (tagbuffer) = datalen;
caps = gst_type_find_helper_for_buffer (NULL, tagbuffer, NULL);
if (caps == NULL)
caps = gst_caps_new_simple (mimetype, NULL);
gst_buffer_set_caps (tagbuffer, caps);
gst_caps_unref (caps);
}
/* Set filename and description on the caps */
caps = GST_BUFFER_CAPS (tagbuffer);
gst_caps_set_simple (caps, "filename", G_TYPE_STRING, filename, NULL);
if (description)
gst_caps_set_simple (caps, "description", G_TYPE_STRING, description,
NULL);
GST_DEBUG_OBJECT (demux,
"Created attachment buffer with caps: %" GST_PTR_FORMAT, caps);
/* and append to the tag list */
if (image_type != GST_TAG_IMAGE_TYPE_NONE)
gst_tag_list_add (taglist, GST_TAG_MERGE_APPEND, GST_TAG_IMAGE, tagbuffer,
NULL);
else
gst_tag_list_add (taglist, GST_TAG_MERGE_APPEND, GST_TAG_ATTACHMENT,
tagbuffer, NULL);
}
g_free (filename);
g_free (mimetype);
g_free (data);
g_free (description);
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_attachments (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
GstFlowReturn ret = GST_FLOW_OK;
GstTagList *taglist;
DEBUG_ELEMENT_START (demux, ebml, "Attachments");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "Attachments", ret);
return ret;
}
taglist = gst_tag_list_new ();
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_ATTACHEDFILE:
ret = gst_matroska_demux_parse_attached_file (demux, taglist);
break;
default:
GST_WARNING ("Unknown Attachments subelement 0x%x - ignoring", id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "Attachments", ret);
if (gst_structure_n_fields (GST_STRUCTURE (taglist)) > 0) {
GST_DEBUG_OBJECT (demux, "Posting attachment tags");
gst_element_found_tags (GST_ELEMENT (ebml), taglist);
} else {
GST_DEBUG_OBJECT (demux, "No valid attachments found");
gst_tag_list_free (taglist);
}
demux->attachments_parsed = TRUE;
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_chapters (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
GstFlowReturn ret = GST_FLOW_OK;
GST_WARNING_OBJECT (demux, "Parsing of chapters not implemented yet");
/* TODO: implement parsing of chapters */
DEBUG_ELEMENT_START (demux, ebml, "Chapters");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "Chapters", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
default:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "Chapters", ret);
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_OBJECT (demux, "Sync to %" GST_TIME_FORMAT,
GST_TIME_ARGS (demux->segment.last_stop));
g_assert (demux->num_streams == demux->src->len);
for (stream_nr = 0; stream_nr < demux->src->len; stream_nr++) {
GstMatroskaTrackContext *context;
context = g_ptr_array_index (demux->src, stream_nr);
GST_LOG_OBJECT (demux,
"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_OBJECT (demux,
"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 GstFlowReturn
gst_matroska_demux_add_mpeg_seq_header (GstElement * element,
GstMatroskaTrackContext * stream, GstBuffer ** buf)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
guint8 *seq_header;
guint seq_header_len;
guint32 header;
if (stream->codec_state) {
seq_header = stream->codec_state;
seq_header_len = stream->codec_state_size;
} else if (stream->codec_priv) {
seq_header = stream->codec_priv;
seq_header_len = stream->codec_priv_size;
} else {
return GST_FLOW_OK;
}
/* Sequence header only needed for keyframes */
if (GST_BUFFER_FLAG_IS_SET (*buf, GST_BUFFER_FLAG_DELTA_UNIT))
return GST_FLOW_OK;
if (GST_BUFFER_SIZE (*buf) < 4)
return GST_FLOW_OK;
header = GST_READ_UINT32_BE (GST_BUFFER_DATA (*buf));
/* Sequence start code, if not found prepend */
if (header != 0x000001b3) {
GstBuffer *newbuf;
GstFlowReturn ret, cret;
ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
GST_BUFFER_OFFSET_NONE, GST_BUFFER_SIZE (*buf) + seq_header_len,
stream->caps, &newbuf);
cret = gst_matroska_demux_combine_flows (demux, stream, ret);
if (ret != GST_FLOW_OK) {
GST_WARNING_OBJECT (demux, "Reallocating buffer for sequence header "
"failed: %s, combined flow return: %s", gst_flow_get_name (ret),
gst_flow_get_name (cret));
return cret;
}
GST_DEBUG_OBJECT (demux, "Prepending MPEG sequence header");
gst_buffer_copy_metadata (newbuf, *buf, GST_BUFFER_COPY_TIMESTAMPS |
GST_BUFFER_COPY_FLAGS);
g_memmove (GST_BUFFER_DATA (newbuf), seq_header, seq_header_len);
g_memmove (GST_BUFFER_DATA (newbuf) + seq_header_len,
GST_BUFFER_DATA (*buf), GST_BUFFER_SIZE (*buf));
gst_buffer_unref (*buf);
*buf = newbuf;
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_matroska_demux_add_wvpk_header (GstElement * element,
GstMatroskaTrackContext * stream, GstBuffer ** buf)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
GstMatroskaTrackAudioContext *audiocontext =
(GstMatroskaTrackAudioContext *) stream;
GstBuffer *newbuf = NULL;
guint8 *data;
guint newlen;
GstFlowReturn ret, cret = GST_FLOW_OK;
Wavpack4Header wvh;
wvh.ck_id[0] = 'w';
wvh.ck_id[1] = 'v';
wvh.ck_id[2] = 'p';
wvh.ck_id[3] = 'k';
wvh.version = GST_READ_UINT16_LE (stream->codec_priv);
wvh.track_no = 0;
wvh.index_no = 0;
wvh.total_samples = -1;
wvh.block_index = audiocontext->wvpk_block_index;
if (audiocontext->channels <= 2) {
guint32 block_samples;
block_samples = GST_READ_UINT32_LE (GST_BUFFER_DATA (*buf));
/* we need to reconstruct the header of the wavpack block */
/* -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 = GST_BUFFER_SIZE (*buf) + sizeof (Wavpack4Header) - 20;
/* block_samples, flags and crc are already in the buffer */
newlen = GST_BUFFER_SIZE (*buf) + 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), GST_BUFFER_SIZE (*buf));
gst_buffer_copy_metadata (newbuf, *buf,
GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS);
gst_buffer_unref (*buf);
*buf = newbuf;
audiocontext->wvpk_block_index += block_samples;
} else {
guint8 *outdata;
guint outpos = 0;
guint size;
guint32 block_samples, flags, crc, blocksize;
data = GST_BUFFER_DATA (*buf);
size = GST_BUFFER_SIZE (*buf);
if (size < 4) {
GST_ERROR_OBJECT (demux, "Too small wavpack buffer");
return GST_FLOW_ERROR;
}
block_samples = GST_READ_UINT32_LE (data);
data += 4;
size -= 4;
while (size > 12) {
flags = GST_READ_UINT32_LE (data);
data += 4;
size -= 4;
crc = GST_READ_UINT32_LE (data);
data += 4;
size -= 4;
blocksize = GST_READ_UINT32_LE (data);
data += 4;
size -= 4;
if (blocksize == 0 || size < blocksize)
break;
if (newbuf == NULL) {
newbuf = gst_buffer_new_and_alloc (sizeof (Wavpack4Header) + blocksize);
gst_buffer_set_caps (newbuf, stream->caps);
gst_buffer_copy_metadata (newbuf, *buf,
GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS);
outpos = 0;
outdata = GST_BUFFER_DATA (newbuf);
} else {
GST_BUFFER_SIZE (newbuf) += sizeof (Wavpack4Header) + blocksize;
GST_BUFFER_DATA (newbuf) =
g_realloc (GST_BUFFER_DATA (newbuf), GST_BUFFER_SIZE (newbuf));
GST_BUFFER_MALLOCDATA (newbuf) = GST_BUFFER_DATA (newbuf);
outdata = GST_BUFFER_DATA (newbuf);
}
outdata[outpos] = 'w';
outdata[outpos + 1] = 'v';
outdata[outpos + 2] = 'p';
outdata[outpos + 3] = 'k';
outpos += 4;
GST_WRITE_UINT32_LE (outdata + outpos,
blocksize + sizeof (Wavpack4Header) - 8);
GST_WRITE_UINT16_LE (outdata + outpos + 4, wvh.version);
GST_WRITE_UINT8 (outdata + outpos + 6, wvh.track_no);
GST_WRITE_UINT8 (outdata + outpos + 7, wvh.index_no);
GST_WRITE_UINT32_LE (outdata + outpos + 8, wvh.total_samples);
GST_WRITE_UINT32_LE (outdata + outpos + 12, wvh.block_index);
GST_WRITE_UINT32_LE (outdata + outpos + 16, block_samples);
GST_WRITE_UINT32_LE (outdata + outpos + 20, flags);
GST_WRITE_UINT32_LE (outdata + outpos + 24, crc);
outpos += 28;
g_memmove (outdata + outpos, data, blocksize);
outpos += blocksize;
data += blocksize;
size -= blocksize;
}
gst_buffer_unref (*buf);
*buf = newbuf;
audiocontext->wvpk_block_index += block_samples;
}
return cret;
}
static GstFlowReturn
gst_matroska_demux_check_subtitle_buffer (GstElement * element,
GstMatroskaTrackContext * stream, GstBuffer ** buf)
{
GstMatroskaTrackSubtitleContext *sub_stream;
const gchar *encoding, *data;
GError *err = NULL;
GstBuffer *newbuf;
gchar *utf8;
guint size;
sub_stream = (GstMatroskaTrackSubtitleContext *) stream;
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 GST_FLOW_OK;
}
GST_WARNING_OBJECT (element, "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 (element, "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 (element, "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_COPY_FLAGS);
gst_buffer_unref (buf);
*buf = newbuf;
return GST_FLOW_OK;
}
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)
break;
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_OBJECT (demux, "Invalid stream %d or size %u", stream_num,
size);
ret = GST_FLOW_ERROR;
break;
}
stream = g_ptr_array_index (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);
GST_DEBUG_OBJECT (demux, "BlockDuration: %" G_GUINT64_FORMAT,
block_duration);
break;
}
case GST_MATROSKA_ID_REFERENCEBLOCK:{
ret = gst_ebml_read_sint (ebml, &id, &referenceblock);
GST_DEBUG_OBJECT (demux, "ReferenceBlock: %" G_GINT64_FORMAT,
referenceblock);
break;
}
case GST_MATROSKA_ID_CODECSTATE:{
guint8 *data;
guint64 data_len = 0;
if ((ret =
gst_ebml_read_binary (ebml, &id, &data,
&data_len)) != GST_FLOW_OK)
break;
g_free (stream->codec_state);
stream->codec_state = data;
stream->codec_state_size = data_len;
/* Decode if necessary */
if (stream->encodings && stream->encodings->len > 0
&& stream->codec_state && stream->codec_state_size > 0) {
if (!gst_matroska_decode_data (stream->encodings,
(guint8 **) & stream->codec_state, &stream->codec_state_size,
GST_MATROSKA_TRACK_ENCODING_SCOPE_CODEC_DATA, TRUE)) {
GST_WARNING_OBJECT (demux, "Decoding codec state failed");
}
}
GST_DEBUG_OBJECT (demux, "CodecState of %u bytes",
stream->codec_state_size);
break;
}
default:
GST_WARNING_OBJECT (demux,
"Unknown BlockGroup subelement 0x%x - ignoring", 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_SLICES:
ret = gst_ebml_read_skip (ebml);
break;
}
if (is_simpleblock)
break;
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (ret == GST_FLOW_OK && readblock) {
guint64 duration = 0;
gint64 lace_time = 0;
stream = g_ptr_array_index (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 * laces;
}
/* else duration is diff between timecode of this and next block */
for (n = 0; n < laces; n++) {
GstBuffer *sub;
GstClockTimeDiff diff;
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);
if (sub == NULL) {
GST_WARNING_OBJECT (demux, "Decoding buffer failed");
goto next_lace;
}
GST_BUFFER_TIMESTAMP (sub) = lace_time;
if (lace_time != GST_CLOCK_TIME_NONE) {
demux->segment.last_stop = lace_time;
diff = GST_CLOCK_DIFF (stream->pos, lace_time);
if (diff < -GST_SECOND / 2 || diff > GST_SECOND / 2) {
GST_DEBUG_OBJECT (demux, "Gap of %" G_GINT64_FORMAT " ns detected in"
"stream %d. Sending updated NEWSEGMENT event", diff,
stream->index);
gst_pad_push_event (stream->pad, gst_event_new_new_segment (TRUE,
demux->segment.rate, GST_FORMAT_TIME, lace_time, -1,
lace_time));
}
}
stream->pos = demux->segment.last_stop;
gst_matroska_demux_sync_streams (demux);
if (duration) {
GST_BUFFER_DURATION (sub) = duration / laces;
stream->pos += GST_BUFFER_DURATION (sub);
demux->segment.last_stop += 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 (GST_BUFFER_FLAG_IS_SET (sub, GST_BUFFER_FLAG_DELTA_UNIT)
&& stream->set_discont) {
/* When doing seeks or such, we need to restart on key frames or
* decoders might choke. */
goto done;
}
if (stream->set_discont) {
GST_BUFFER_FLAG_SET (sub, GST_BUFFER_FLAG_DISCONT);
stream->set_discont = FALSE;
}
GST_DEBUG_OBJECT (demux,
"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));
/* Postprocess the buffers depending on the codec used */
if (stream->postprocess_frame) {
ret = stream->postprocess_frame (GST_ELEMENT (demux), stream, &sub);
}
ret = gst_pad_push (stream->pad, sub);
/* combine flows */
ret = gst_matroska_demux_combine_flows (demux, stream, ret);
next_lace:
size -= lace_size[n];
if (lace_time != GST_CLOCK_TIME_NONE && duration)
lace_time += duration / laces;
else
lace_time = GST_CLOCK_TIME_NONE;
}
}
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;
DEBUG_ELEMENT_START (demux, ebml, "Cluster");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "Cluster", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
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)
break;
GST_DEBUG_OBJECT (demux, "ClusterTimeCode: %" G_GUINT64_FORMAT, num);
cluster_time = num;
break;
}
/* a group of blocks inside a cluster */
case GST_MATROSKA_ID_BLOCKGROUP:
DEBUG_ELEMENT_START (demux, ebml, "BlockGroup");
if ((ret = gst_ebml_read_master (ebml, &id)) == GST_FLOW_OK) {
ret = gst_matroska_demux_parse_blockgroup_or_simpleblock (demux,
cluster_time, FALSE);
}
DEBUG_ELEMENT_STOP (demux, ebml, "BlockGroup", ret);
break;
case GST_MATROSKA_ID_SIMPLEBLOCK:
{
DEBUG_ELEMENT_START (demux, ebml, "SimpleBlock");
ret = gst_matroska_demux_parse_blockgroup_or_simpleblock (demux,
cluster_time, TRUE);
DEBUG_ELEMENT_STOP (demux, ebml, "SimpleBlock", ret);
break;
}
default:
GST_WARNING ("Unknown Cluster subelement 0x%x - ignoring", id);
/* fall-through */
case GST_MATROSKA_ID_POSITION:
case GST_MATROSKA_ID_PREVSIZE:
case GST_MATROSKA_ID_ENCRYPTEDBLOCK:
case GST_MATROSKA_ID_SILENTTRACKS:
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "Cluster", ret);
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_contents_seekentry (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstFlowReturn ret;
guint64 seek_pos = (guint64) - 1;
guint32 seek_id = 0;
guint32 id;
DEBUG_ELEMENT_START (demux, ebml, "Seek");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
DEBUG_ELEMENT_STOP (demux, ebml, "Seek", ret);
return ret;
}
while (ret == GST_FLOW_OK) {
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
break;
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)
break;
GST_DEBUG_OBJECT (demux, "SeekID: %" G_GUINT64_FORMAT, t);
seek_id = t;
break;
}
case GST_MATROSKA_ID_SEEKPOSITION:
{
guint64 t;
if ((ret = gst_ebml_read_uint (ebml, &id, &t)) != GST_FLOW_OK)
break;
if (t > G_MAXINT64) {
GST_WARNING_OBJECT (demux,
"Too large SeekPosition %" G_GUINT64_FORMAT, t);
break;
}
GST_DEBUG_OBJECT (demux, "SeekPosition: %" G_GUINT64_FORMAT, t);
seek_pos = t;
break;
}
default:
GST_WARNING_OBJECT (demux,
"Unknown SeekHead subelement 0x%x - ignoring", id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (ret != GST_FLOW_OK && ret != GST_FLOW_UNEXPECTED)
return ret;
if (!seek_id || seek_pos == (guint64) - 1) {
GST_WARNING_OBJECT (demux, "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)
break;
/* we don't want to lose our seekhead level, so we add
* a dummy. This is a crude hack. */
level = g_slice_new (GstEbmlLevel);
level->start = 0;
level->length = G_MAXUINT64;
ebml->level = g_list_prepend (ebml->level, level);
/* check ID */
if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK)
goto finish;
if (id != seek_id) {
GST_WARNING_OBJECT (demux,
"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) {
ret = gst_matroska_demux_parse_index (demux);
}
break;
case GST_MATROSKA_ID_TAGS:
ret = gst_matroska_demux_parse_metadata (demux);
break;
case GST_MATROSKA_ID_TRACKS:
if (!demux->tracks_parsed) {
ret = gst_matroska_demux_parse_tracks (demux);
}
break;
case GST_MATROSKA_ID_SEGMENTINFO:
if (!demux->segmentinfo_parsed) {
ret = gst_matroska_demux_parse_info (demux);
}
break;
case GST_MATROSKA_ID_SEEKHEAD:
{
GList *l;
DEBUG_ELEMENT_START (demux, ebml, "SeekHead");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
goto finish;
/* 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->prev)
goto finish;
}
ret = gst_matroska_demux_parse_contents (demux);
break;
}
case GST_MATROSKA_ID_ATTACHMENTS:
if (!demux->attachments_parsed) {
ret = gst_matroska_demux_parse_attachments (demux);
}
break;
case GST_MATROSKA_ID_CHAPTERS:
ret = gst_matroska_demux_parse_chapters (demux);
break;
}
finish:
/* remove dummy level */
while (ebml->level) {
guint64 length;
level = ebml->level->data;
ebml->level = g_list_delete_link (ebml->level, ebml->level);
length = level->length;
g_slice_free (GstEbmlLevel, level);
if (length == G_MAXUINT64)
break;
}
/* seek back */
(void) gst_ebml_read_seek (ebml, before_pos);
demux->level_up = level_up;
break;
}
default:
GST_DEBUG_OBJECT (demux, "Ignoring Seek entry for ID=0x%x", seek_id);
break;
}
DEBUG_ELEMENT_STOP (demux, ebml, "Seek", ret);
return ret;
}
static GstFlowReturn
gst_matroska_demux_parse_contents (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;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_SEEKENTRY:
{
ret = gst_matroska_demux_parse_contents_seekentry (demux);
/* Ignore EOS and errors here */
if (ret != GST_FLOW_OK) {
GST_DEBUG_OBJECT (demux, "Ignoring %s", gst_flow_get_name (ret));
ret = GST_FLOW_OK;
}
break;
}
default:
GST_WARNING ("Unknown SeekHead subelement 0x%x - ignoring", id);
ret = gst_ebml_read_skip (ebml);
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
DEBUG_ELEMENT_STOP (demux, ebml, "SeekHead", ret);
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 = GST_FLOW_OK;
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_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_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_matroska_demux_parse_index (demux)) != 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_matroska_demux_parse_metadata (demux)) != GST_FLOW_OK)
return ret;
break;
}
/* file index (if seekable, seek to Cues/Tags/etc to parse it) */
case GST_MATROSKA_ID_SEEKHEAD:
{
DEBUG_ELEMENT_START (demux, ebml, "SeekHead");
if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK)
return ret;
if ((ret = gst_matroska_demux_parse_contents (demux)) != GST_FLOW_OK)
return ret;
break;
}
/* cluster - contains the payload */
case GST_MATROSKA_ID_CLUSTER:
{
if (demux->state != GST_MATROSKA_DEMUX_STATE_DATA) {
/* We need a Tracks element first before we can output anything.
* Search it!
*/
if (!demux->tracks_parsed) {
GstEbmlLevel *level;
GstFlowReturn iret = GST_FLOW_OK;
guint32 iid;
guint level_up;
guint64 before_pos;
GST_WARNING_OBJECT (demux,
"Found Cluster element before Tracks, searching Tracks");
/* remember */
level_up = demux->level_up;
before_pos = ebml->offset;
/* we don't want to lose our seekhead level, so we add
* a dummy. This is a crude hack. */
level = g_slice_new (GstEbmlLevel);
level->start = 0;
level->length = G_MAXUINT64;
ebml->level = g_list_prepend (ebml->level, level);
/* Search Tracks element */
while (iret == GST_FLOW_OK) {
if ((iret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK)
break;
if ((iret =
gst_ebml_peek_id (ebml, &demux->level_up,
&iid)) != GST_FLOW_OK)
break;
if (iid != GST_MATROSKA_ID_TRACKS)
continue;
iret = gst_matroska_demux_parse_tracks (demux);
break;
}
if (!demux->tracks_parsed) {
GST_ERROR_OBJECT (demux, "No Tracks element found");
ret = GST_FLOW_ERROR;
}
/* remove dummy level */
while (ebml->level) {
guint64 length;
level = ebml->level->data;
ebml->level = g_list_delete_link (ebml->level, ebml->level);
length = level->length;
g_slice_free (GstEbmlLevel, level);
if (length == G_MAXUINT64)
break;
}
/* seek back */
gst_ebml_read_seek (ebml, before_pos);
demux->level_up = level_up;
}
if (ret != GST_FLOW_OK)
return ret;
demux->state = GST_MATROSKA_DEMUX_STATE_DATA;
/* 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 {
/* 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 (!demux->attachments_parsed) {
if ((ret = gst_matroska_demux_parse_attachments (demux)) != GST_FLOW_OK)
return ret;
} else {
if ((ret = gst_ebml_read_skip (ebml)) != 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_matroska_demux_parse_chapters (demux)) != GST_FLOW_OK)
return ret;
break;
}
default:
GST_WARNING_OBJECT (demux, "Unknown Segment subelement 0x%x at %"
G_GUINT64_FORMAT " - ignoring", id, GST_EBML_READ (demux)->offset);
if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK)
return ret;
break;
}
return ret;
}
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;
}
/* If we have to close a segment are send a new segment do
* this now */
if (demux->state == GST_MATROSKA_DEMUX_STATE_DATA) {
if (demux->close_segment) {
gst_matroska_demux_send_event (demux, demux->close_segment);
demux->close_segment = NULL;
}
if (demux->new_segment) {
gst_matroska_demux_send_event (demux, demux->new_segment);
demux->new_segment = NULL;
}
}
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;
g_assert (demux->num_streams == demux->src->len);
for (i = 0; i < demux->src->len; i++) {
GstMatroskaTrackContext *context = g_ptr_array_index (demux->src, i);
if (context->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 (context->pad));
ret = GST_FLOW_UNEXPECTED;
goto pause;
}
}
}
if (ebml->offset == gst_ebml_read_get_length (ebml)) {
GST_LOG_OBJECT (demux, "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);
context->postprocess_frame = gst_matroska_demux_add_mpeg_seq_header;
} 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);
GST_DEBUG ("data:%p, size:0x%x", data, size);
/* We need to extract the extradata ! */
if (data && (size >= 0x22)) {
GstBuffer *priv;
guint rformat;
guint subformat;
gst_util_dump_mem (data, size);
gst_util_dump_mem (data + 0x1a, size - 0x1a);
subformat = GST_READ_UINT32_BE (data + 0x1a);
rformat = GST_READ_UINT32_BE (data + 0x1e);
priv = gst_buffer_new_and_alloc (size - 0x1a);
memcpy (GST_BUFFER_DATA (priv), data + 0x1a, size - 0x1a);
gst_caps_set_simple (caps,
"codec_data", GST_TYPE_BUFFER, priv,
"format", G_TYPE_INT, rformat,
"subformat", G_TYPE_INT, subformat, NULL);
gst_buffer_unref (priv);
}
*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");
context->postprocess_frame = gst_matroska_demux_add_wvpk_header;
audiocontext->wvpk_block_index = 0;
} 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);
/* Extract extra information from caps, mapping varies based on codec */
if (data && (size >= 0x50)) {
GstBuffer *priv;
guint flavor;
guint packet_size;
guint height;
guint leaf_size;
guint sample_width;
guint extra_data_size;
GST_ERROR ("real audio raversion:%d", raversion);
gst_util_dump_mem (data, size);
if (raversion == 8) {
/* COOK */
flavor = GST_READ_UINT16_BE (data + 22);
packet_size = GST_READ_UINT32_BE (data + 24);
height = GST_READ_UINT16_BE (data + 40);
leaf_size = GST_READ_UINT16_BE (data + 44);
sample_width = GST_READ_UINT16_BE (data + 58);
extra_data_size = GST_READ_UINT32_BE (data + 74);
GST_ERROR
("flavor:%d, packet_size:%d, height:%d, leaf_size:%d, sample_width:%d, extra_data_size:%d",
flavor, packet_size, height, leaf_size, sample_width,
extra_data_size);
gst_caps_set_simple (caps, "flavor", G_TYPE_INT, flavor, "packet_size",
G_TYPE_INT, packet_size, "height", G_TYPE_INT, height, "leaf_size",
G_TYPE_INT, leaf_size, "width", G_TYPE_INT, sample_width, NULL);
if ((size - 78) >= extra_data_size) {
priv = gst_buffer_new_and_alloc (extra_data_size);
memcpy (GST_BUFFER_DATA (priv), data + 78, extra_data_size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
gst_buffer_unref (priv);
}
}
}
*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;
GstMatroskaTrackContext *context =
(GstMatroskaTrackContext *) subtitlecontext;
/* 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);
context->postprocess_frame = gst_matroska_demux_check_subtitle_buffer;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_SSA)) {
caps = gst_caps_new_simple ("application/x-ssa", NULL);
context->postprocess_frame = gst_matroska_demux_check_subtitle_buffer;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_ASS)) {
caps = gst_caps_new_simple ("application/x-ass", NULL);
context->postprocess_frame = gst_matroska_demux_check_subtitle_buffer;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_USF)) {
caps = gst_caps_new_simple ("application/x-usf", NULL);
context->postprocess_frame = gst_matroska_demux_check_subtitle_buffer;
} 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;
} else {
GST_DEBUG ("Unknown subtitle stream: codec_id='%s'", codec_id);
caps = gst_caps_new_simple ("application/x-subtitle-unknown", NULL);
}
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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