/*
* Matroska file demuxer
- * Copyright (c) 2003-2008 The FFmpeg Project
+ * Copyright (c) 2003-2008 The Libav Project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include "avformat.h"
#include "internal.h"
+#include "avio_internal.h"
/* For ff_codec_get_id(). */
#include "riff.h"
#include "isom.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/avstring.h"
#include "libavutil/lzo.h"
+#include "libavutil/dict.h"
#if CONFIG_ZLIB
#include <zlib.h>
#endif
EBML_NEST,
EBML_PASS,
EBML_STOP,
+ EBML_TYPE_COUNT
} EbmlType;
typedef const struct EbmlSyntax {
int sub_packet_size;
int sub_packet_cnt;
int pkt_cnt;
+ uint64_t buf_timecode;
uint8_t *buf;
} MatroskaTrackAudio;
*/
static int ebml_level_end(MatroskaDemuxContext *matroska)
{
- ByteIOContext *pb = matroska->ctx->pb;
- int64_t pos = url_ftell(pb);
+ AVIOContext *pb = matroska->ctx->pb;
+ int64_t pos = avio_tell(pb);
if (matroska->num_levels > 0) {
MatroskaLevel *level = &matroska->levels[matroska->num_levels - 1];
* number.
* Returns: number of bytes read, < 0 on error
*/
-static int ebml_read_num(MatroskaDemuxContext *matroska, ByteIOContext *pb,
+static int ebml_read_num(MatroskaDemuxContext *matroska, AVIOContext *pb,
int max_size, uint64_t *number)
{
- int len_mask = 0x80, read = 1, n = 1;
- int64_t total = 0;
+ int read = 1, n = 1;
+ uint64_t total = 0;
- /* The first byte tells us the length in bytes - get_byte() can normally
+ /* The first byte tells us the length in bytes - avio_r8() can normally
* return 0, but since that's not a valid first ebmlID byte, we can
* use it safely here to catch EOS. */
- if (!(total = get_byte(pb))) {
+ if (!(total = avio_r8(pb))) {
/* we might encounter EOS here */
- if (!url_feof(pb)) {
- int64_t pos = url_ftell(pb);
+ if (!pb->eof_reached) {
+ int64_t pos = avio_tell(pb);
av_log(matroska->ctx, AV_LOG_ERROR,
"Read error at pos. %"PRIu64" (0x%"PRIx64")\n",
pos, pos);
}
/* get the length of the EBML number */
- while (read <= max_size && !(total & len_mask)) {
- read++;
- len_mask >>= 1;
- }
+ read = 8 - ff_log2_tab[total];
if (read > max_size) {
- int64_t pos = url_ftell(pb) - 1;
+ int64_t pos = avio_tell(pb) - 1;
av_log(matroska->ctx, AV_LOG_ERROR,
"Invalid EBML number size tag 0x%02x at pos %"PRIu64" (0x%"PRIx64")\n",
(uint8_t) total, pos, pos);
}
/* read out length */
- total &= ~len_mask;
+ total ^= 1 << ff_log2_tab[total];
while (n++ < read)
- total = (total << 8) | get_byte(pb);
+ total = (total << 8) | avio_r8(pb);
*number = total;
return read;
}
+/**
+ * Read a EBML length value.
+ * This needs special handling for the "unknown length" case which has multiple
+ * encodings.
+ */
+static int ebml_read_length(MatroskaDemuxContext *matroska, AVIOContext *pb,
+ uint64_t *number)
+{
+ int res = ebml_read_num(matroska, pb, 8, number);
+ if (res > 0 && *number + 1 == 1ULL << (7 * res))
+ *number = 0xffffffffffffffULL;
+ return res;
+}
+
/*
* Read the next element as an unsigned int.
* 0 is success, < 0 is failure.
*/
-static int ebml_read_uint(ByteIOContext *pb, int size, uint64_t *num)
+static int ebml_read_uint(AVIOContext *pb, int size, uint64_t *num)
{
int n = 0;
- if (size < 1 || size > 8)
+ if (size > 8)
return AVERROR_INVALIDDATA;
/* big-endian ordering; build up number */
*num = 0;
while (n++ < size)
- *num = (*num << 8) | get_byte(pb);
+ *num = (*num << 8) | avio_r8(pb);
return 0;
}
* Read the next element as a float.
* 0 is success, < 0 is failure.
*/
-static int ebml_read_float(ByteIOContext *pb, int size, double *num)
+static int ebml_read_float(AVIOContext *pb, int size, double *num)
{
- if (size == 4) {
- *num= av_int2flt(get_be32(pb));
+ if (size == 0) {
+ *num = 0;
+ } else if (size == 4) {
+ *num= av_int2flt(avio_rb32(pb));
} else if(size==8){
- *num= av_int2dbl(get_be64(pb));
+ *num= av_int2dbl(avio_rb64(pb));
} else
return AVERROR_INVALIDDATA;
* Read the next element as an ASCII string.
* 0 is success, < 0 is failure.
*/
-static int ebml_read_ascii(ByteIOContext *pb, int size, char **str)
+static int ebml_read_ascii(AVIOContext *pb, int size, char **str)
{
av_free(*str);
/* EBML strings are usually not 0-terminated, so we allocate one
* byte more, read the string and NULL-terminate it ourselves. */
if (!(*str = av_malloc(size + 1)))
return AVERROR(ENOMEM);
- if (get_buffer(pb, (uint8_t *) *str, size) != size) {
+ if (avio_read(pb, (uint8_t *) *str, size) != size) {
av_freep(str);
return AVERROR(EIO);
}
* Read the next element as binary data.
* 0 is success, < 0 is failure.
*/
-static int ebml_read_binary(ByteIOContext *pb, int length, EbmlBin *bin)
+static int ebml_read_binary(AVIOContext *pb, int length, EbmlBin *bin)
{
av_free(bin->data);
if (!(bin->data = av_malloc(length)))
return AVERROR(ENOMEM);
bin->size = length;
- bin->pos = url_ftell(pb);
- if (get_buffer(pb, bin->data, length) != length) {
+ bin->pos = avio_tell(pb);
+ if (avio_read(pb, bin->data, length) != length) {
av_freep(&bin->data);
return AVERROR(EIO);
}
*/
static int ebml_read_master(MatroskaDemuxContext *matroska, uint64_t length)
{
- ByteIOContext *pb = matroska->ctx->pb;
+ AVIOContext *pb = matroska->ctx->pb;
MatroskaLevel *level;
if (matroska->num_levels >= EBML_MAX_DEPTH) {
}
level = &matroska->levels[matroska->num_levels++];
- level->start = url_ftell(pb);
+ level->start = avio_tell(pb);
level->length = length;
return 0;
static int matroska_ebmlnum_uint(MatroskaDemuxContext *matroska,
uint8_t *data, uint32_t size, uint64_t *num)
{
- ByteIOContext pb;
- init_put_byte(&pb, data, size, 0, NULL, NULL, NULL, NULL);
+ AVIOContext pb;
+ ffio_init_context(&pb, data, size, 0, NULL, NULL, NULL, NULL);
return ebml_read_num(matroska, &pb, FFMIN(size, 8), num);
}
static int ebml_parse_elem(MatroskaDemuxContext *matroska,
EbmlSyntax *syntax, void *data)
{
- ByteIOContext *pb = matroska->ctx->pb;
+ static const uint64_t max_lengths[EBML_TYPE_COUNT] = {
+ [EBML_UINT] = 8,
+ [EBML_FLOAT] = 8,
+ // max. 16 MB for strings
+ [EBML_STR] = 0x1000000,
+ [EBML_UTF8] = 0x1000000,
+ // max. 256 MB for binary data
+ [EBML_BIN] = 0x10000000,
+ // no limits for anything else
+ };
+ AVIOContext *pb = matroska->ctx->pb;
uint32_t id = syntax->id;
uint64_t length;
int res;
if (syntax->type != EBML_PASS && syntax->type != EBML_STOP) {
matroska->current_id = 0;
- if ((res = ebml_read_num(matroska, pb, 8, &length)) < 0)
+ if ((res = ebml_read_length(matroska, pb, &length)) < 0)
return res;
+ if (max_lengths[syntax->type] && length > max_lengths[syntax->type]) {
+ av_log(matroska->ctx, AV_LOG_ERROR,
+ "Invalid length 0x%"PRIx64" > 0x%"PRIx64" for syntax element %i\n",
+ length, max_lengths[syntax->type], syntax->type);
+ return AVERROR_INVALIDDATA;
+ }
}
switch (syntax->type) {
case EBML_NEST: if ((res=ebml_read_master(matroska, length)) < 0)
return res;
if (id == MATROSKA_ID_SEGMENT)
- matroska->segment_start = url_ftell(matroska->ctx->pb);
+ matroska->segment_start = avio_tell(matroska->ctx->pb);
return ebml_parse_nest(matroska, syntax->def.n, data);
case EBML_PASS: return ebml_parse_id(matroska, syntax->def.n, id, data);
case EBML_STOP: return 1;
- default: return url_fseek(pb,length,SEEK_CUR)<0 ? AVERROR(EIO) : 0;
+ default: return avio_skip(pb,length)<0 ? AVERROR(EIO) : 0;
}
if (res == AVERROR_INVALIDDATA)
av_log(matroska->ctx, AV_LOG_ERROR, "Invalid element\n");
int result = 0;
int olen;
+ if (pkt_size >= 10000000)
+ return -1;
+
switch (encodings[0].compression.algo) {
case MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP:
return encodings[0].compression.settings.size;
}
static void matroska_convert_tag(AVFormatContext *s, EbmlList *list,
- AVMetadata **metadata, char *prefix)
+ AVDictionary **metadata, char *prefix)
{
MatroskaTag *tags = list->elem;
char key[1024];
for (i=0; i < list->nb_elem; i++) {
const char *lang = strcmp(tags[i].lang, "und") ? tags[i].lang : NULL;
+
+ if (!tags[i].name) {
+ av_log(s, AV_LOG_WARNING, "Skipping invalid tag with no TagName.\n");
+ continue;
+ }
if (prefix) snprintf(key, sizeof(key), "%s/%s", prefix, tags[i].name);
else av_strlcpy(key, tags[i].name, sizeof(key));
if (tags[i].def || !lang) {
- av_metadata_set2(metadata, key, tags[i].string, 0);
+ av_dict_set(metadata, key, tags[i].string, 0);
if (tags[i].sub.nb_elem)
matroska_convert_tag(s, &tags[i].sub, metadata, key);
}
if (lang) {
av_strlcat(key, "-", sizeof(key));
av_strlcat(key, lang, sizeof(key));
- av_metadata_set2(metadata, key, tags[i].string, 0);
+ av_dict_set(metadata, key, tags[i].string, 0);
if (tags[i].sub.nb_elem)
matroska_convert_tag(s, &tags[i].sub, metadata, key);
}
}
+ ff_metadata_conv(metadata, NULL, ff_mkv_metadata_conv);
}
static void matroska_convert_tags(AVFormatContext *s)
if (tags[i].target.attachuid) {
MatroskaAttachement *attachment = matroska->attachments.elem;
for (j=0; j<matroska->attachments.nb_elem; j++)
- if (attachment[j].uid == tags[i].target.attachuid)
+ if (attachment[j].uid == tags[i].target.attachuid
+ && attachment[j].stream)
matroska_convert_tag(s, &tags[i].tag,
&attachment[j].stream->metadata, NULL);
} else if (tags[i].target.chapteruid) {
MatroskaChapter *chapter = matroska->chapters.elem;
for (j=0; j<matroska->chapters.nb_elem; j++)
- if (chapter[j].uid == tags[i].target.chapteruid)
+ if (chapter[j].uid == tags[i].target.chapteruid
+ && chapter[j].chapter)
matroska_convert_tag(s, &tags[i].tag,
&chapter[j].chapter->metadata, NULL);
} else if (tags[i].target.trackuid) {
MatroskaTrack *track = matroska->tracks.elem;
for (j=0; j<matroska->tracks.nb_elem; j++)
- if (track[j].uid == tags[i].target.trackuid)
+ if (track[j].uid == tags[i].target.trackuid && track[j].stream)
matroska_convert_tag(s, &tags[i].tag,
&track[j].stream->metadata, NULL);
} else {
EbmlList *seekhead_list = &matroska->seekhead;
MatroskaSeekhead *seekhead = seekhead_list->elem;
uint32_t level_up = matroska->level_up;
- int64_t before_pos = url_ftell(matroska->ctx->pb);
+ int64_t before_pos = avio_tell(matroska->ctx->pb);
uint32_t saved_id = matroska->current_id;
MatroskaLevel level;
int i;
// we should not do any seeking in the streaming case
- if (url_is_streamed(matroska->ctx->pb) ||
+ if (!matroska->ctx->pb->seekable ||
(matroska->ctx->flags & AVFMT_FLAG_IGNIDX))
return;
continue;
/* seek */
- if (url_fseek(matroska->ctx->pb, offset, SEEK_SET) != offset)
+ if (avio_seek(matroska->ctx->pb, offset, SEEK_SET) != offset)
continue;
/* We don't want to lose our seekhead level, so we add
}
/* seek back */
- url_fseek(matroska->ctx->pb, before_pos, SEEK_SET);
+ avio_seek(matroska->ctx->pb, before_pos, SEEK_SET);
matroska->level_up = level_up;
matroska->current_id = saved_id;
}
if (matroska->duration)
matroska->ctx->duration = matroska->duration * matroska->time_scale
* 1000 / AV_TIME_BASE;
- av_metadata_set2(&s->metadata, "title", matroska->title, 0);
+ av_dict_set(&s->metadata, "title", matroska->title, 0);
tracks = matroska->tracks.elem;
for (i=0; i < matroska->tracks.nb_elem; i++) {
uint8_t *extradata = NULL;
int extradata_size = 0;
int extradata_offset = 0;
- ByteIOContext b;
+ AVIOContext b;
/* Apply some sanity checks. */
if (track->type != MATROSKA_TRACK_TYPE_VIDEO &&
} else if (!strcmp(track->codec_id, "A_MS/ACM")
&& track->codec_priv.size >= 14
&& track->codec_priv.data != NULL) {
- init_put_byte(&b, track->codec_priv.data, track->codec_priv.size,
- URL_RDONLY, NULL, NULL, NULL, NULL);
- ff_get_wav_header(&b, st->codec, track->codec_priv.size);
+ int ret;
+ ffio_init_context(&b, track->codec_priv.data, track->codec_priv.size,
+ AVIO_FLAG_READ, NULL, NULL, NULL, NULL);
+ ret = ff_get_wav_header(&b, st->codec, track->codec_priv.size);
+ if (ret < 0)
+ return ret;
codec_id = st->codec->codec_id;
extradata_offset = FFMIN(track->codec_priv.size, 18);
} else if (!strcmp(track->codec_id, "V_QUICKTIME")
extradata = av_mallocz(extradata_size);
if (extradata == NULL)
return AVERROR(ENOMEM);
- init_put_byte(&b, extradata, extradata_size, 1,
+ ffio_init_context(&b, extradata, extradata_size, 1,
NULL, NULL, NULL, NULL);
- put_buffer(&b, "TTA1", 4);
- put_le16(&b, 1);
- put_le16(&b, track->audio.channels);
- put_le16(&b, track->audio.bitdepth);
- put_le32(&b, track->audio.out_samplerate);
- put_le32(&b, matroska->ctx->duration * track->audio.out_samplerate);
+ avio_write(&b, "TTA1", 4);
+ avio_wl16(&b, 1);
+ avio_wl16(&b, track->audio.channels);
+ avio_wl16(&b, track->audio.bitdepth);
+ avio_wl32(&b, track->audio.out_samplerate);
+ avio_wl32(&b, matroska->ctx->duration * track->audio.out_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;
} else if (codec_id == CODEC_ID_RA_288 || codec_id == CODEC_ID_COOK ||
codec_id == CODEC_ID_ATRAC3 || codec_id == CODEC_ID_SIPR) {
int flavor;
- init_put_byte(&b, track->codec_priv.data,track->codec_priv.size,
+ ffio_init_context(&b, track->codec_priv.data,track->codec_priv.size,
0, NULL, NULL, NULL, NULL);
- url_fskip(&b, 22);
- flavor = get_be16(&b);
- track->audio.coded_framesize = get_be32(&b);
- url_fskip(&b, 12);
- track->audio.sub_packet_h = get_be16(&b);
- track->audio.frame_size = get_be16(&b);
- track->audio.sub_packet_size = get_be16(&b);
+ avio_skip(&b, 22);
+ flavor = avio_rb16(&b);
+ track->audio.coded_framesize = avio_rb32(&b);
+ avio_skip(&b, 12);
+ track->audio.sub_packet_h = avio_rb16(&b);
+ track->audio.frame_size = avio_rb16(&b);
+ track->audio.sub_packet_size = avio_rb16(&b);
track->audio.buf = av_malloc(track->audio.frame_size * track->audio.sub_packet_h);
if (codec_id == CODEC_ID_RA_288) {
st->codec->block_align = track->audio.coded_framesize;
st->codec->codec_id = codec_id;
st->start_time = 0;
if (strcmp(track->language, "und"))
- av_metadata_set2(&st->metadata, "language", track->language, 0);
- av_metadata_set2(&st->metadata, "title", track->name, 0);
+ av_dict_set(&st->metadata, "language", track->language, 0);
+ av_dict_set(&st->metadata, "title", track->name, 0);
if (track->flag_default)
st->disposition |= AV_DISPOSITION_DEFAULT;
AVStream *st = av_new_stream(s, 0);
if (st == NULL)
break;
- av_metadata_set2(&st->metadata, "filename",attachements[j].filename, 0);
+ av_dict_set(&st->metadata, "filename",attachements[j].filename, 0);
st->codec->codec_id = CODEC_ID_NONE;
st->codec->codec_type = AVMEDIA_TYPE_ATTACHMENT;
st->codec->extradata = av_malloc(attachements[j].bin.size);
ff_new_chapter(s, chapters[i].uid, (AVRational){1, 1000000000},
chapters[i].start, chapters[i].end,
chapters[i].title);
- av_metadata_set2(&chapters[i].chapter->metadata,
+ av_dict_set(&chapters[i].chapter->metadata,
"title", chapters[i].title, 0);
max_start = chapters[i].start;
}
if (size <= 3 || !track || !track->stream) {
av_log(matroska->ctx, AV_LOG_INFO,
"Invalid stream %"PRIu64" or size %u\n", num, size);
- return res;
+ return AVERROR_INVALIDDATA;
}
st = track->stream;
if (st->discard >= AVDISCARD_ALL)
int x;
if (!track->audio.pkt_cnt) {
+ if (track->audio.sub_packet_cnt == 0)
+ track->audio.buf_timecode = timecode;
if (st->codec->codec_id == CODEC_ID_RA_288)
for (x=0; x<h/2; x++)
memcpy(track->audio.buf+x*2*w+y*cfs,
av_new_packet(pkt, a);
memcpy(pkt->data, track->audio.buf
+ a * (h*w / a - track->audio.pkt_cnt--), a);
+ pkt->pts = track->audio.buf_timecode;
+ track->audio.buf_timecode = AV_NOPTS_VALUE;
pkt->pos = pos;
pkt->stream_index = st->index;
dynarray_add(&matroska->packets,&matroska->num_packets,pkt);
int offset = 0, pkt_size = lace_size[n];
uint8_t *pkt_data = data;
- if (lace_size[n] > size) {
+ if (pkt_size > size) {
av_log(matroska->ctx, AV_LOG_ERROR, "Invalid packet size\n");
break;
}
EbmlList *blocks_list;
MatroskaBlock *blocks;
int i, res;
- int64_t pos = url_ftell(matroska->ctx->pb);
+ int64_t pos = avio_tell(matroska->ctx->pb);
matroska->prev_pkt = NULL;
if (matroska->current_id)
pos -= 4; /* sizeof the ID which was already read */
res = ebml_parse(matroska, matroska_clusters, &cluster);
blocks_list = &cluster.blocks;
blocks = blocks_list->elem;
- for (i=0; i<blocks_list->nb_elem; i++)
+ for (i=0; i<blocks_list->nb_elem && !res; i++)
if (blocks[i].bin.size > 0 && blocks[i].bin.data) {
int is_keyframe = blocks[i].non_simple ? !blocks[i].reference : -1;
+ if (!blocks[i].non_simple)
+ blocks[i].duration = AV_NOPTS_VALUE;
res=matroska_parse_block(matroska,
blocks[i].bin.data, blocks[i].bin.size,
blocks[i].bin.pos, cluster.timecode,
static int matroska_read_packet(AVFormatContext *s, AVPacket *pkt)
{
MatroskaDemuxContext *matroska = s->priv_data;
+ int ret = 0;
- while (matroska_deliver_packet(matroska, pkt)) {
+ while (!ret && matroska_deliver_packet(matroska, pkt)) {
if (matroska->done)
return AVERROR_EOF;
- matroska_parse_cluster(matroska);
+ ret = matroska_parse_cluster(matroska);
}
- return 0;
+ return ret;
}
static int matroska_read_seek(AVFormatContext *s, int stream_index,
timestamp = FFMAX(timestamp, st->index_entries[0].timestamp);
if ((index = av_index_search_timestamp(st, timestamp, flags)) < 0) {
- url_fseek(s->pb, st->index_entries[st->nb_index_entries-1].pos, SEEK_SET);
+ avio_seek(s->pb, st->index_entries[st->nb_index_entries-1].pos, SEEK_SET);
+ matroska->current_id = 0;
while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0) {
matroska_clear_queue(matroska);
if (matroska_parse_cluster(matroska) < 0)
index_min = index;
for (i=0; i < matroska->tracks.nb_elem; i++) {
+ tracks[i].audio.pkt_cnt = 0;
+ tracks[i].audio.sub_packet_cnt = 0;
+ tracks[i].audio.buf_timecode = AV_NOPTS_VALUE;
tracks[i].end_timecode = 0;
if (tracks[i].type == MATROSKA_TRACK_TYPE_SUBTITLE
&& !tracks[i].stream->discard != AVDISCARD_ALL) {
}
}
- url_fseek(s->pb, st->index_entries[index_min].pos, SEEK_SET);
+ avio_seek(s->pb, st->index_entries[index_min].pos, SEEK_SET);
+ matroska->current_id = 0;
matroska->skip_to_keyframe = !(flags & AVSEEK_FLAG_ANY);
matroska->skip_to_timecode = st->index_entries[index].timestamp;
matroska->done = 0;
return 0;
}
-AVInputFormat matroska_demuxer = {
- "matroska",
- NULL_IF_CONFIG_SMALL("Matroska file format"),
+AVInputFormat ff_matroska_demuxer = {
+ "matroska,webm",
+ NULL_IF_CONFIG_SMALL("Matroska/WebM file format"),
sizeof(MatroskaDemuxContext),
matroska_probe,
matroska_read_header,
matroska_read_packet,
matroska_read_close,
matroska_read_seek,
- .metadata_conv = ff_mkv_metadata_conv,
};
projects / ffmpeg / blobdiff