*/
#include "avformat.h"
-/* For codec_get_bmp_id and codec_get_wav_id. */
+/* For codec_get_id(). */
#include "riff.h"
#include "intfloat_readwrite.h"
/* IDs in the trackaudio master */
#define MATROSKA_ID_AUDIOSAMPLINGFREQ 0xB5
+#define MATROSKA_ID_AUDIOOUTSAMPLINGFREQ 0x78B5
+
#define MATROSKA_ID_AUDIOBITDEPTH 0x6264
#define MATROSKA_ID_AUDIOCHANNELS 0x9F
/* IDs in the cluster master */
#define MATROSKA_ID_CLUSTERTIMECODE 0xE7
#define MATROSKA_ID_BLOCKGROUP 0xA0
+#define MATROSKA_ID_SIMPLEBLOCK 0xA3
/* IDs in the blockgroup master */
#define MATROSKA_ID_BLOCK 0xA1
MATROSKA_TRACK_ENABLED = (1<<0),
MATROSKA_TRACK_DEFAULT = (1<<1),
MATROSKA_TRACK_LACING = (1<<2),
+ MATROSKA_TRACK_REAL_V = (1<<4),
MATROSKA_TRACK_SHIFT = (1<<16)
} MatroskaTrackFlags;
{"A_AC3" , CODEC_ID_AC3},
{"A_DTS" , CODEC_ID_DTS},
{"A_VORBIS" , CODEC_ID_VORBIS},
- {"A_AAC/MPEG2/" , CODEC_ID_AAC},
- {"A_AAC/MPEG4/" , CODEC_ID_AAC},
+ {"A_AAC" , CODEC_ID_AAC},
+ {"A_FLAC" , CODEC_ID_FLAC},
{"A_WAVPACK4" , CODEC_ID_WAVPACK},
+ {"A_TTA1" , CODEC_ID_TTA},
{NULL , CODEC_ID_NONE}
/* TODO: AC3-9/10 (?), Real, Musepack, Quicktime */
};
int channels,
bitdepth,
+ internal_samplerate,
samplerate;
//..
} MatroskaAudioTrack;
//..
} MatroskaSubtitleTrack;
+#define MAX_TRACK_SIZE (FFMAX(FFMAX(sizeof(MatroskaVideoTrack), \
+ sizeof(MatroskaAudioTrack)), \
+ sizeof(MatroskaSubtitleTrack)))
+
typedef struct MatroskaLevel {
uint64_t start, length;
} MatroskaLevel;
negative = 1;
*num &= ~0x80;
}
- *num = 0;
while (n++ < size)
*num = (*num << 8) | get_byte(pb);
av_realloc(matroska->packets, (matroska->num_packets - 1) *
sizeof(AVPacket *));
} else {
- av_free(matroska->packets);
- matroska->packets = NULL;
+ av_freep(&matroska->packets);
}
matroska->num_packets--;
return 0;
* we don't parse the whole header but simply check for the
* availability of that array of characters inside the header.
* Not fully fool-proof, but good enough. */
- for (n = 4 + size; n < 4 + size + total - sizeof(probe_data); n++)
+ for (n = 4 + size; n <= 4 + size + total - sizeof(probe_data); n++)
if (!memcmp (&p->buf[n], probe_data, sizeof(probe_data)))
return AVPROBE_SCORE_MAX;
av_log(matroska->ctx, AV_LOG_DEBUG, "parsing track, adding stream..,\n");
/* Allocate a generic track. As soon as we know its type we'll realloc. */
- track = av_mallocz(sizeof(MatroskaTrack));
+ track = av_mallocz(MAX_TRACK_SIZE);
matroska->num_tracks++;
/* start with the master */
/* track type (video, audio, combined, subtitle, etc.) */
case MATROSKA_ID_TRACKTYPE: {
uint64_t num;
- if (track->type != 0) {
+ if ((res = ebml_read_uint(matroska, &id, &num)) < 0)
+ break;
+ if (track->type && track->type != num) {
av_log(matroska->ctx, AV_LOG_INFO,
"More than one tracktype in an entry - skip\n");
break;
}
- if ((res = ebml_read_uint(matroska, &id, &num)) < 0)
- break;
track->type = num;
- /* ok, so we're actually going to reallocate this thing */
switch (track->type) {
case MATROSKA_TRACK_TYPE_VIDEO:
- track = (MatroskaTrack *)
- av_realloc(track, sizeof(MatroskaVideoTrack));
- break;
case MATROSKA_TRACK_TYPE_AUDIO:
- track = (MatroskaTrack *)
- av_realloc(track, sizeof(MatroskaAudioTrack));
- ((MatroskaAudioTrack *)track)->channels = 1;
- ((MatroskaAudioTrack *)track)->samplerate = 8000;
- break;
case MATROSKA_TRACK_TYPE_SUBTITLE:
- track = (MatroskaTrack *)
- av_realloc(track, sizeof(MatroskaSubtitleTrack));
break;
case MATROSKA_TRACK_TYPE_COMPLEX:
case MATROSKA_TRACK_TYPE_LOGO:
/* tracktype specific stuff for video */
case MATROSKA_ID_TRACKVIDEO: {
MatroskaVideoTrack *videotrack;
+ if (!track->type)
+ track->type = MATROSKA_TRACK_TYPE_VIDEO;
if (track->type != MATROSKA_TRACK_TYPE_VIDEO) {
av_log(matroska->ctx, AV_LOG_INFO,
"video data in non-video track - ignoring\n");
/* tracktype specific stuff for audio */
case MATROSKA_ID_TRACKAUDIO: {
MatroskaAudioTrack *audiotrack;
+ if (!track->type)
+ track->type = MATROSKA_TRACK_TYPE_AUDIO;
if (track->type != MATROSKA_TRACK_TYPE_AUDIO) {
av_log(matroska->ctx, AV_LOG_INFO,
"audio data in non-audio track - ignoring\n");
} else if ((res = ebml_read_master(matroska, &id)) < 0)
break;
audiotrack = (MatroskaAudioTrack *)track;
+ audiotrack->channels = 1;
+ audiotrack->samplerate = 8000;
while (res == 0) {
if (!(id = ebml_peek_id(matroska, &matroska->level_up))) {
switch (id) {
/* samplerate */
case MATROSKA_ID_AUDIOSAMPLINGFREQ: {
+ double num;
+ if ((res = ebml_read_float(matroska, &id,
+ &num)) < 0)
+ break;
+ audiotrack->internal_samplerate =
+ audiotrack->samplerate = num;
+ break;
+ }
+
+ case MATROSKA_ID_AUDIOOUTSAMPLINGFREQ: {
double num;
if ((res = ebml_read_float(matroska, &id,
&num)) < 0)
/* check ID */
if (!(id = ebml_peek_id (matroska,
&matroska->level_up)))
- break;
+ goto finish;
if (id != seek_id) {
av_log(matroska->ctx, AV_LOG_INFO,
"We looked for ID=0x%x but got "
/* read master + parse */
if ((res = ebml_read_master(matroska, &id)) < 0)
- break;
+ goto finish;
switch (id) {
case MATROSKA_ID_CUES:
if (!(res = matroska_parse_index(matroska)) ||
}
break;
}
- if (res < 0)
- break;
finish:
/* remove dummy level */
return res;
}
+#define ARRAY_SIZE(x) (sizeof(x)/sizeof(*x))
+
+static int
+matroska_aac_profile (char *codec_id)
+{
+ static const char *aac_profiles[] = {
+ "MAIN", "LC", "SSR"
+ };
+ int profile;
+
+ for (profile=0; profile<ARRAY_SIZE(aac_profiles); profile++)
+ if (strstr(codec_id, aac_profiles[profile]))
+ break;
+ return profile + 1;
+}
+
+static int
+matroska_aac_sri (int samplerate)
+{
+ static const int aac_sample_rates[] = {
+ 96000, 88200, 64000, 48000, 44100, 32000,
+ 24000, 22050, 16000, 12000, 11025, 8000,
+ };
+ int sri;
+
+ for (sri=0; sri<ARRAY_SIZE(aac_sample_rates); sri++)
+ if (aac_sample_rates[sri] == samplerate)
+ break;
+ return sri;
+}
+
static int
matroska_read_header (AVFormatContext *s,
AVFormatParameters *ap)
return AVERROR_NOFMT;
}
av_free(doctype);
- if (version != 1) {
+ if (version > 2) {
av_log(matroska->ctx, AV_LOG_ERROR,
- "Matroska demuxer version 1 too old for file version %d\n",
+ "Matroska demuxer version 2 too old for file version %d\n",
version);
return AVERROR_NOFMT;
}
}
}
- if (res < 0)
- return res;
-
/* Have we found a cluster? */
- if (res == 1) {
+ if (ebml_peek_id(matroska, NULL) == MATROSKA_ID_CLUSTER) {
int i, j;
MatroskaTrack *track;
AVStream *st;
for (i = 0; i < matroska->num_tracks; i++) {
enum CodecID codec_id = CODEC_ID_NONE;
- void *extradata = NULL;
+ uint8_t *extradata = NULL;
int extradata_size = 0;
+ int extradata_offset = 0;
track = matroska->tracks[i];
/* libavformat does not really support subtitles.
continue;
for(j=0; codec_tags[j].str; j++){
- if(!strcmp(codec_tags[j].str, track->codec_id)){
+ if(!strncmp(codec_tags[j].str, track->codec_id,
+ strlen(codec_tags[j].str))){
codec_id= codec_tags[j].id;
break;
}
p = (unsigned char *)track->codec_priv + 16;
((MatroskaVideoTrack *)track)->fourcc = (p[3] << 24) |
(p[2] << 16) | (p[1] << 8) | p[0];
- codec_id = codec_get_bmp_id(((MatroskaVideoTrack *)track)->fourcc);
+ codec_id = codec_get_id(codec_bmp_tags, ((MatroskaVideoTrack *)track)->fourcc);
}
/* Offset of wFormatTag. Stored in LE. */
p = (unsigned char *)track->codec_priv;
tag = (p[1] << 8) | p[0];
- codec_id = codec_get_wav_id(tag);
+ codec_id = codec_get_id(codec_wav_tags, tag);
+
+ }
+
+ else if (codec_id == CODEC_ID_AAC && !track->codec_priv_size) {
+ MatroskaAudioTrack *audiotrack = (MatroskaAudioTrack *) track;
+ int profile = matroska_aac_profile(track->codec_id);
+ int sri = matroska_aac_sri(audiotrack->internal_samplerate);
+ extradata = av_malloc(5);
+ if (extradata == NULL)
+ return AVERROR_NOMEM;
+ extradata[0] = (profile << 3) | ((sri&0x0E) >> 1);
+ extradata[1] = ((sri&0x01) << 7) | (audiotrack->channels<<3);
+ if (strstr(track->codec_id, "SBR")) {
+ sri = matroska_aac_sri(audiotrack->samplerate);
+ extradata[2] = 0x56;
+ extradata[3] = 0xE5;
+ extradata[4] = 0x80 | (sri<<3);
+ extradata_size = 5;
+ } else {
+ extradata_size = 2;
+ }
+ }
+
+ else if (codec_id == CODEC_ID_TTA) {
+ MatroskaAudioTrack *audiotrack = (MatroskaAudioTrack *) track;
+ ByteIOContext b;
+ extradata_size = 30;
+ extradata = av_mallocz(extradata_size);
+ if (extradata == NULL)
+ return AVERROR_NOMEM;
+ init_put_byte(&b, extradata, extradata_size, 1,
+ NULL, NULL, NULL, NULL);
+ put_buffer(&b, (uint8_t *) "TTA1", 4);
+ put_le16(&b, 1);
+ put_le16(&b, audiotrack->channels);
+ put_le16(&b, audiotrack->bitdepth);
+ put_le32(&b, audiotrack->samplerate);
+ put_le32(&b, matroska->ctx->duration * audiotrack->samplerate);
+ }
+ else if (codec_id == CODEC_ID_RV10 || codec_id == CODEC_ID_RV20 ||
+ codec_id == CODEC_ID_RV30 || codec_id == CODEC_ID_RV40) {
+ extradata_offset = 26;
+ track->codec_priv_size -= extradata_offset;
+ track->flags |= MATROSKA_TRACK_REAL_V;
}
if (codec_id == CODEC_ID_NONE) {
if(st->codec->extradata == NULL)
return AVERROR_NOMEM;
st->codec->extradata_size = track->codec_priv_size;
- memcpy(st->codec->extradata, track->codec_priv,
+ memcpy(st->codec->extradata,track->codec_priv+extradata_offset,
track->codec_priv_size);
}
/* What do we do with private data? E.g. for Vorbis. */
}
+ res = 0;
}
- return 0;
+ return res;
}
static int
return -1;
}
+static inline int
+rv_offset(uint8_t *data, int slice, int slices)
+{
+ return AV_RL32(data+8*slice+4) + 8*slices;
+}
+
+static int
+matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, int size,
+ int64_t pos, uint64_t cluster_time,
+ int is_keyframe, int *ptrack, AVPacket **ppkt)
+{
+ int res = 0;
+ int track;
+ AVPacket *pkt;
+ uint8_t *origdata = data;
+ int16_t block_time;
+ uint32_t *lace_size = NULL;
+ int n, flags, laces = 0;
+ uint64_t num;
+
+ /* first byte(s): tracknum */
+ if ((n = matroska_ebmlnum_uint(data, size, &num)) < 0) {
+ av_log(matroska->ctx, AV_LOG_ERROR, "EBML block data error\n");
+ av_free(origdata);
+ return res;
+ }
+ data += n;
+ size -= n;
+
+ /* fetch track from num */
+ track = matroska_find_track_by_num(matroska, num);
+ if (ptrack) *ptrack = track;
+ if (size <= 3 || track < 0 || track >= matroska->num_tracks) {
+ av_log(matroska->ctx, AV_LOG_INFO,
+ "Invalid stream %d or size %u\n", track, size);
+ av_free(origdata);
+ return res;
+ }
+ if(matroska->ctx->streams[ matroska->tracks[track]->stream_index ]->discard >= AVDISCARD_ALL){
+ av_free(origdata);
+ return res;
+ }
+
+ /* block_time (relative to cluster time) */
+ block_time = (data[0] << 8) | data[1];
+ data += 2;
+ size -= 2;
+ flags = *data;
+ data += 1;
+ size -= 1;
+ if (is_keyframe == -1)
+ is_keyframe = flags & 1 ? PKT_FLAG_KEY : 0;
+ switch ((flags & 0x06) >> 1) {
+ case 0x0: /* no lacing */
+ laces = 1;
+ lace_size = av_mallocz(sizeof(int));
+ lace_size[0] = size;
+ break;
+
+ case 0x1: /* xiph lacing */
+ case 0x2: /* fixed-size lacing */
+ case 0x3: /* EBML lacing */
+ if (size == 0) {
+ res = -1;
+ break;
+ }
+ laces = (*data) + 1;
+ data += 1;
+ size -= 1;
+ lace_size = av_mallocz(laces * sizeof(int));
+
+ switch ((flags & 0x06) >> 1) {
+ case 0x1: /* xiph lacing */ {
+ uint8_t temp;
+ uint32_t total = 0;
+ for (n = 0; res == 0 && n < laces - 1; n++) {
+ while (1) {
+ if (size == 0) {
+ res = -1;
+ break;
+ }
+ temp = *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 */ {
+ uint32_t total;
+ n = matroska_ebmlnum_uint(data, size, &num);
+ if (n < 0) {
+ av_log(matroska->ctx, AV_LOG_INFO,
+ "EBML block data error\n");
+ break;
+ }
+ data += n;
+ size -= n;
+ total = lace_size[0] = num;
+ for (n = 1; res == 0 && n < laces - 1; n++) {
+ int64_t snum;
+ int r;
+ r = matroska_ebmlnum_sint (data, size, &snum);
+ if (r < 0) {
+ av_log(matroska->ctx, AV_LOG_INFO,
+ "EBML block data error\n");
+ break;
+ }
+ data += r;
+ size -= r;
+ lace_size[n] = lace_size[n - 1] + snum;
+ total += lace_size[n];
+ }
+ lace_size[n] = size - total;
+ break;
+ }
+ }
+ break;
+ }
+
+ if (res == 0) {
+ int real_v = matroska->tracks[track]->flags & MATROSKA_TRACK_REAL_V;
+ for (n = 0; n < laces; n++) {
+ uint64_t timecode = AV_NOPTS_VALUE;
+ int slice, slices = 1;
+
+ if (real_v) {
+ slices = *data++ + 1;
+ lace_size[n]--;
+ }
+ if (cluster_time != (uint64_t)-1 && n == 0) {
+ if (cluster_time + block_time >= 0)
+ timecode = (cluster_time + block_time) * matroska->time_scale;
+ }
+ /* FIXME: duration */
+
+ for (slice=0; slice<slices; slice++) {
+ int slice_size, slice_offset = 0;
+ if (real_v)
+ slice_offset = rv_offset(data, slice, slices);
+ if (slice+1 == slices)
+ slice_size = lace_size[n] - slice_offset;
+ else
+ slice_size = rv_offset(data, slice+1, slices) - slice_offset;
+ pkt = av_mallocz(sizeof(AVPacket));
+ if (ppkt) *ppkt = pkt;
+ /* XXX: prevent data copy... */
+ if (av_new_packet(pkt, slice_size) < 0) {
+ res = AVERROR_NOMEM;
+ n = laces-1;
+ break;
+ }
+ memcpy (pkt->data, data+slice_offset, slice_size);
+
+ if (n == 0)
+ pkt->flags = is_keyframe;
+ pkt->stream_index = matroska->tracks[track]->stream_index;
+
+ pkt->pts = timecode;
+ pkt->pos = pos;
+
+ matroska_queue_packet(matroska, pkt);
+ }
+ data += lace_size[n];
+ }
+ }
+
+ av_free(lace_size);
+ av_free(origdata);
+ return res;
+}
+
static int
matroska_parse_blockgroup (MatroskaDemuxContext *matroska,
uint64_t cluster_time)
int is_keyframe = PKT_FLAG_KEY, last_num_packets = matroska->num_packets;
uint64_t duration = AV_NOPTS_VALUE;
int track = -1;
+ uint8_t *data;
+ int size = 0;
+ int64_t pos = 0;
av_log(matroska->ctx, AV_LOG_DEBUG, "parsing blockgroup...\n");
* of the harder things, so this code is a bit complicated.
* See http://www.matroska.org/ for documentation. */
case MATROSKA_ID_BLOCK: {
- uint8_t *data, *origdata;
- int size;
- int16_t block_time;
- uint32_t *lace_size = NULL;
- int n, flags, laces = 0;
- uint64_t num;
- int64_t pos= url_ftell(&matroska->ctx->pb);
-
- if ((res = ebml_read_binary(matroska, &id, &data, &size)) < 0)
- break;
- origdata = data;
-
- /* first byte(s): blocknum */
- if ((n = matroska_ebmlnum_uint(data, size, &num)) < 0) {
- av_log(matroska->ctx, AV_LOG_ERROR,
- "EBML block data error\n");
- av_free(origdata);
- break;
- }
- data += n;
- size -= n;
-
- /* fetch track from num */
- track = matroska_find_track_by_num(matroska, num);
- if (size <= 3 || track < 0 || track >= matroska->num_tracks) {
- av_log(matroska->ctx, AV_LOG_INFO,
- "Invalid stream %d or size %u\n", track, size);
- av_free(origdata);
- break;
- }
- if(matroska->ctx->streams[ matroska->tracks[track]->stream_index ]->discard >= AVDISCARD_ALL){
- av_free(origdata);
- break;
- }
-
- /* block_time (relative to cluster time) */
- block_time = (data[0] << 8) | data[1];
- data += 2;
- size -= 2;
- flags = *data;
- data += 1;
- size -= 1;
- switch ((flags & 0x06) >> 1) {
- case 0x0: /* no lacing */
- laces = 1;
- lace_size = av_mallocz(sizeof(int));
- lace_size[0] = size;
- break;
-
- case 0x1: /* xiph lacing */
- case 0x2: /* fixed-size lacing */
- case 0x3: /* EBML lacing */
- if (size == 0) {
- res = -1;
- break;
- }
- laces = (*data) + 1;
- data += 1;
- size -= 1;
- lace_size = av_mallocz(laces * sizeof(int));
-
- switch ((flags & 0x06) >> 1) {
- case 0x1: /* xiph lacing */ {
- uint8_t temp;
- uint32_t total = 0;
- for (n = 0; res == 0 && n < laces - 1; n++) {
- while (1) {
- if (size == 0) {
- res = -1;
- break;
- }
- temp = *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 */ {
- uint32_t total;
- n = matroska_ebmlnum_uint(data, size, &num);
- if (n < 0) {
- av_log(matroska->ctx, AV_LOG_INFO,
- "EBML block data error\n");
- break;
- }
- data += n;
- size -= n;
- total = lace_size[0] = num;
- for (n = 1; res == 0 && n < laces - 1; n++) {
- int64_t snum;
- int r;
- r = matroska_ebmlnum_sint (data, size,
- &snum);
- if (r < 0) {
- av_log(matroska->ctx, AV_LOG_INFO,
- "EBML block data error\n");
- break;
- }
- data += r;
- size -= r;
- lace_size[n] = lace_size[n - 1] + snum;
- total += lace_size[n];
- }
- lace_size[n] = size - total;
- break;
- }
- }
- break;
- }
-
- if (res == 0) {
- for (n = 0; n < laces; n++) {
- uint64_t timecode = AV_NOPTS_VALUE;
-
- pkt = av_mallocz(sizeof(AVPacket));
- /* XXX: prevent data copy... */
- if (av_new_packet(pkt,lace_size[n]) < 0) {
- res = AVERROR_NOMEM;
- break;
- }
- if (cluster_time != (uint64_t)-1 && n == 0) {
- if (cluster_time + block_time >= 0)
- timecode = cluster_time + block_time;
- }
- /* FIXME: duration */
-
- memcpy(pkt->data, data, lace_size[n]);
- data += lace_size[n];
- if (n == 0)
- pkt->flags = is_keyframe;
- pkt->stream_index =
- matroska->tracks[track]->stream_index;
-
- pkt->pts = timecode;
- pkt->pos= pos;
-
- matroska_queue_packet(matroska, pkt);
- }
- }
-
- av_free(lace_size);
- av_free(origdata);
+ pos = url_ftell(&matroska->ctx->pb);
+ res = ebml_read_binary(matroska, &id, &data, &size);
break;
}
}
}
+ if (res)
+ return res;
+
+ if (size > 0)
+ res = matroska_parse_block(matroska, data, size, pos, cluster_time,
+ is_keyframe, &track, &pkt);
+
if (pkt)
{
if (duration != AV_NOPTS_VALUE)
int res = 0;
uint32_t id;
uint64_t cluster_time = 0;
+ uint8_t *data;
+ int64_t pos;
+ int size;
av_log(matroska->ctx, AV_LOG_DEBUG,
"parsing cluster at %"PRId64"\n", url_ftell(&matroska->ctx->pb));
res = matroska_parse_blockgroup(matroska, cluster_time);
break;
+ case MATROSKA_ID_SIMPLEBLOCK:
+ pos = url_ftell(&matroska->ctx->pb);
+ res = ebml_read_binary(matroska, &id, &data, &size);
+ if (res == 0)
+ res = matroska_parse_block(matroska, data, size, pos,
+ cluster_time, -1, NULL, NULL);
+ break;
+
default:
av_log(matroska->ctx, AV_LOG_INFO,
"Unknown entry 0x%x in cluster data\n", id);
int res = 0;
uint32_t id;
- /* Do we still have a packet queued? */
- if (matroska_deliver_packet(matroska, pkt) == 0)
- return 0;
+ /* Read stream until we have a packet queued. */
+ while (matroska_deliver_packet(matroska, pkt)) {
- /* Have we already reached the end? */
- if (matroska->done)
- return AVERROR_IO;
+ /* Have we already reached the end? */
+ if (matroska->done)
+ return AVERROR_IO;
- while (res == 0) {
- if (!(id = ebml_peek_id(matroska, &matroska->level_up))) {
- res = AVERROR_IO;
- break;
- } else if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
+ while (res == 0) {
+ if (!(id = ebml_peek_id(matroska, &matroska->level_up))) {
+ return AVERROR_IO;
+ } else if (matroska->level_up) {
+ matroska->level_up--;
+ break;
+ }
- switch (id) {
- case MATROSKA_ID_CLUSTER:
- if ((res = ebml_read_master(matroska, &id)) < 0)
+ switch (id) {
+ case MATROSKA_ID_CLUSTER:
+ if ((res = ebml_read_master(matroska, &id)) < 0)
+ break;
+ if ((res = matroska_parse_cluster(matroska)) == 0)
+ res = 1; /* Parsed one cluster, let's get out. */
break;
- if ((res = matroska_parse_cluster(matroska)) == 0)
- res = 1; /* Parsed one cluster, let's get out. */
- break;
- default:
- case EBML_ID_VOID:
- res = ebml_read_skip(matroska);
+ default:
+ case EBML_ID_VOID:
+ res = ebml_read_skip(matroska);
+ break;
+ }
+
+ if (matroska->level_up) {
+ matroska->level_up--;
break;
+ }
}
- if (matroska->level_up) {
- matroska->level_up--;
- break;
- }
+ if (res == -1)
+ matroska->done = 1;
}
- if (res == -1)
- matroska->done = 1;
-
- return matroska_deliver_packet(matroska, pkt);
+ return 0;
}
static int
projects / ffmpeg / blobdiff