* Matroska file demuxer (no muxer yet)
* Copyright (c) 2003-2004 The ffmpeg Project
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
/* For codec_get_bmp_id and codec_get_wav_id. */
-#include "avi.h"
+#include "riff.h"
#include "intfloat_readwrite.h"
/* EBML version supported */
/* IDs in the info master */
#define MATROSKA_ID_TIMECODESCALE 0x2AD7B1
#define MATROSKA_ID_DURATION 0x4489
+#define MATROSKA_ID_TITLE 0x7BA9
#define MATROSKA_ID_WRITINGAPP 0x5741
#define MATROSKA_ID_MUXINGAPP 0x4D80
#define MATROSKA_ID_DATEUTC 0x4461
/* 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
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;
*num= av_int2flt(get_be32(pb));
} else if(size==8){
*num= av_int2dbl(get_be64(pb));
- } else if(size==10){
- av_log(matroska->ctx, AV_LOG_ERROR,
- "FIXME! 10-byte floats unimplemented\n");
- return AVERROR_UNKNOWN;
} else{
offset_t pos = url_ftell(pb);
av_log(matroska->ctx, AV_LOG_ERROR,
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;
break;
}
+ case MATROSKA_ID_TITLE: {
+ char *text;
+ if ((res = ebml_read_utf8(matroska, &id, &text)) < 0)
+ break;
+ strncpy(matroska->ctx->title, text,
+ sizeof(matroska->ctx->title)-1);
+ av_free(text);
+ break;
+ }
+
case MATROSKA_ID_WRITINGAPP: {
char *text;
if ((res = ebml_read_utf8(matroska, &id, &text)) < 0)
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)
switch (id) {
/* one single index entry ('point') */
case MATROSKA_ID_CUETIME: {
- int64_t time;
+ uint64_t time;
if ((res = ebml_read_uint(matroska, &id,
&time)) < 0)
break;
/* 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)
}
}
- 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;
- enum CodecID codec_id= CODEC_ID_NONE;
MatroskaTrack *track;
AVStream *st;
for (i = 0; i < matroska->num_tracks; i++) {
- void *extradata = NULL;
+ enum CodecID codec_id = CODEC_ID_NONE;
+ 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;
}
}
+ 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) {
av_log(matroska->ctx, AV_LOG_INFO,
"Unknown/unsupported CodecID %s.\n",
st->codec->codec_id = codec_id;
+ if (track->default_duration)
+ av_reduce(&st->codec->time_base.num, &st->codec->time_base.den,
+ track->default_duration, 1000000000, 30000);
+
if(extradata){
st->codec->extradata = extradata;
st->codec->extradata_size = extradata_size;
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 LE_32(data+8*slice+4) + 8*slices;
+}
+
static int
matroska_parse_blockgroup (MatroskaDemuxContext *matroska,
uint64_t cluster_time)
{
int res = 0;
uint32_t id;
- AVPacket *pkt;
+ AVPacket *pkt = NULL;
int is_keyframe = PKT_FLAG_KEY, last_num_packets = matroska->num_packets;
+ uint64_t duration = AV_NOPTS_VALUE;
+ int track = -1;
av_log(matroska->ctx, AV_LOG_DEBUG, "parsing blockgroup...\n");
int size;
int16_t block_time;
uint32_t *lace_size = NULL;
- int n, track, flags, laces = 0;
+ int n, flags, laces = 0;
uint64_t num;
int64_t pos= url_ftell(&matroska->ctx->pb);
break;
origdata = data;
- /* first byte(s): blocknum */
+ /* 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");
}
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;
- pkt = av_mallocz(sizeof(AVPacket));
- /* XXX: prevent data copy... */
- if (av_new_packet(pkt,lace_size[n]) < 0) {
- res = AVERROR_NOMEM;
- break;
+ 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;
+ timecode = (cluster_time + block_time) * matroska->time_scale;
}
/* 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;
+ 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));
+ /* 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;
+ pkt->pts = timecode;
+ pkt->pos = pos;
- matroska_queue_packet(matroska, pkt);
+ matroska_queue_packet(matroska, pkt);
+ }
+ data += lace_size[n];
}
}
}
case MATROSKA_ID_BLOCKDURATION: {
- uint64_t num;
- if ((res = ebml_read_uint(matroska, &id, &num)) < 0)
+ if ((res = ebml_read_uint(matroska, &id, &duration)) < 0)
break;
- av_log(matroska->ctx, AV_LOG_INFO,
- "FIXME: implement support for BlockDuration\n");
break;
}
}
}
+ if (pkt)
+ {
+ if (duration != AV_NOPTS_VALUE)
+ pkt->duration = duration;
+ else if (track >= 0 && track < matroska->num_tracks)
+ pkt->duration = matroska->tracks[track]->default_duration / matroska->time_scale;
+ }
+
return res;
}
MatroskaDemuxContext *matroska = s->priv_data;
int n = 0;
- if (matroska->writing_app)
- av_free(matroska->writing_app);
- if (matroska->muxing_app)
- av_free(matroska->muxing_app);
- if (matroska->index)
- av_free(matroska->index);
+ av_free(matroska->writing_app);
+ av_free(matroska->muxing_app);
+ av_free(matroska->index);
if (matroska->packets != NULL) {
for (n = 0; n < matroska->num_packets; n++) {
for (n = 0; n < matroska->num_tracks; n++) {
MatroskaTrack *track = matroska->tracks[n];
- if (track->codec_id)
- av_free(track->codec_id);
- if (track->codec_name)
- av_free(track->codec_name);
- if (track->codec_priv)
- av_free(track->codec_priv);
- if (track->name)
- av_free(track->name);
- if (track->language)
- av_free(track->language);
+ av_free(track->codec_id);
+ av_free(track->codec_name);
+ av_free(track->codec_priv);
+ av_free(track->name);
+ av_free(track->language);
av_free(track);
}
- memset(matroska, 0, sizeof(MatroskaDemuxContext));
-
return 0;
}
-static AVInputFormat matroska_demuxer = {
+AVInputFormat matroska_demuxer = {
"matroska",
"Matroska file format",
sizeof(MatroskaDemuxContext),
matroska_read_packet,
matroska_read_close,
};
-
-int
-matroska_init(void)
-{
- av_register_input_format(&matroska_demuxer);
- return 0;
-}
projects / ffmpeg / blobdiff