diff options
Diffstat (limited to 'libavformat/matroskadec.c')
| -rw-r--r-- | libavformat/matroskadec.c | 1335 |
1 files changed, 1074 insertions, 261 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index 697e14c30c..6c0d0d5c15 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -1,21 +1,21 @@ /* * Matroska file demuxer - * Copyright (c) 2003-2008 The Libav Project + * Copyright (c) 2003-2008 The FFmpeg Project * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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 2.1 of the License, or (at your option) any later version. * - * Libav 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 Libav; 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 */ @@ -32,19 +32,15 @@ #include <inttypes.h> #include <stdio.h> -#if CONFIG_BZLIB -#include <bzlib.h> -#endif -#if CONFIG_ZLIB -#include <zlib.h> -#endif #include "libavutil/avstring.h" +#include "libavutil/base64.h" #include "libavutil/dict.h" #include "libavutil/intfloat.h" #include "libavutil/intreadwrite.h" #include "libavutil/lzo.h" #include "libavutil/mathematics.h" +#include "libavutil/time_internal.h" #include "libavcodec/bytestream.h" #include "libavcodec/flac.h" @@ -60,6 +56,13 @@ #include "riff.h" #include "rmsipr.h" +#if CONFIG_BZLIB +#include <bzlib.h> +#endif +#if CONFIG_ZLIB +#include <zlib.h> +#endif + typedef enum { EBML_NONE, EBML_UINT, @@ -68,8 +71,10 @@ typedef enum { EBML_UTF8, EBML_BIN, EBML_NEST, + EBML_LEVEL1, EBML_PASS, EBML_STOP, + EBML_SINT, EBML_TYPE_COUNT } EbmlType; @@ -110,10 +115,16 @@ typedef struct MatroskaTrackCompression { EbmlBin settings; } MatroskaTrackCompression; +typedef struct MatroskaTrackEncryption { + uint64_t algo; + EbmlBin key_id; +} MatroskaTrackEncryption; + typedef struct MatroskaTrackEncoding { uint64_t scope; uint64_t type; MatroskaTrackCompression compression; + MatroskaTrackEncryption encryption; } MatroskaTrackEncoding; typedef struct MatroskaTrackVideo { @@ -122,8 +133,9 @@ typedef struct MatroskaTrackVideo { uint64_t display_height; uint64_t pixel_width; uint64_t pixel_height; - uint64_t fourcc; + EbmlBin color_space; uint64_t stereo_mode; + uint64_t alpha_mode; } MatroskaTrackVideo; typedef struct MatroskaTrackAudio { @@ -143,6 +155,15 @@ typedef struct MatroskaTrackAudio { uint8_t *buf; } MatroskaTrackAudio; +typedef struct MatroskaTrackPlane { + uint64_t uid; + uint64_t type; +} MatroskaTrackPlane; + +typedef struct MatroskaTrackOperation { + EbmlList combine_planes; +} MatroskaTrackOperation; + typedef struct MatroskaTrack { uint64_t num; uint64_t uid; @@ -155,14 +176,17 @@ typedef struct MatroskaTrack { uint64_t default_duration; uint64_t flag_default; uint64_t flag_forced; + uint64_t seek_preroll; MatroskaTrackVideo video; MatroskaTrackAudio audio; + MatroskaTrackOperation operation; EbmlList encodings; uint64_t codec_delay; AVStream *stream; int64_t end_timecode; int ms_compat; + uint64_t max_block_additional_id; } MatroskaTrack; typedef struct MatroskaAttachment { @@ -229,6 +253,12 @@ typedef struct MatroskaCluster { EbmlList blocks; } MatroskaCluster; +typedef struct MatroskaLevel1Element { + uint64_t id; + uint64_t pos; + int parsed; +} MatroskaLevel1Element; + typedef struct MatroskaDemuxContext { AVFormatContext *ctx; @@ -241,6 +271,8 @@ typedef struct MatroskaDemuxContext { uint64_t time_scale; double duration; char *title; + char *muxingapp; + EbmlBin date_utc; EbmlList tracks; EbmlList attachments; EbmlList chapters; @@ -265,6 +297,10 @@ typedef struct MatroskaDemuxContext { /* File has a CUES element, but we defer parsing until it is needed. */ int cues_parsing_deferred; + /* Level1 elements and whether they were read yet */ + MatroskaLevel1Element level1_elems[64]; + int num_level1_elems; + int current_cluster_num_blocks; int64_t current_cluster_pos; MatroskaCluster current_cluster; @@ -278,6 +314,9 @@ typedef struct MatroskaBlock { int64_t reference; uint64_t non_simple; EbmlBin bin; + uint64_t additional_id; + EbmlBin additional; + int64_t discard_padding; } MatroskaBlock; static EbmlSyntax ebml_header[] = { @@ -301,19 +340,20 @@ static EbmlSyntax matroska_info[] = { { MATROSKA_ID_DURATION, EBML_FLOAT, 0, offsetof(MatroskaDemuxContext, duration) }, { MATROSKA_ID_TITLE, EBML_UTF8, 0, offsetof(MatroskaDemuxContext, title) }, { MATROSKA_ID_WRITINGAPP, EBML_NONE }, - { MATROSKA_ID_MUXINGAPP, EBML_NONE }, - { MATROSKA_ID_DATEUTC, EBML_NONE }, + { MATROSKA_ID_MUXINGAPP, EBML_UTF8, 0, offsetof(MatroskaDemuxContext, muxingapp) }, + { MATROSKA_ID_DATEUTC, EBML_BIN, 0, offsetof(MatroskaDemuxContext, date_utc) }, { MATROSKA_ID_SEGMENTUID, EBML_NONE }, { 0 } }; static EbmlSyntax matroska_track_video[] = { { MATROSKA_ID_VIDEOFRAMERATE, EBML_FLOAT, 0, offsetof(MatroskaTrackVideo, frame_rate) }, - { MATROSKA_ID_VIDEODISPLAYWIDTH, EBML_UINT, 0, offsetof(MatroskaTrackVideo, display_width) }, - { MATROSKA_ID_VIDEODISPLAYHEIGHT, EBML_UINT, 0, offsetof(MatroskaTrackVideo, display_height) }, + { MATROSKA_ID_VIDEODISPLAYWIDTH, EBML_UINT, 0, offsetof(MatroskaTrackVideo, display_width), { .u=-1 } }, + { MATROSKA_ID_VIDEODISPLAYHEIGHT, EBML_UINT, 0, offsetof(MatroskaTrackVideo, display_height), { .u=-1 } }, { MATROSKA_ID_VIDEOPIXELWIDTH, EBML_UINT, 0, offsetof(MatroskaTrackVideo, pixel_width) }, { MATROSKA_ID_VIDEOPIXELHEIGHT, EBML_UINT, 0, offsetof(MatroskaTrackVideo, pixel_height) }, - { MATROSKA_ID_VIDEOCOLORSPACE, EBML_UINT, 0, offsetof(MatroskaTrackVideo, fourcc) }, + { MATROSKA_ID_VIDEOCOLORSPACE, EBML_BIN, 0, offsetof(MatroskaTrackVideo, color_space) }, + { MATROSKA_ID_VIDEOALPHAMODE, EBML_UINT, 0, offsetof(MatroskaTrackVideo, alpha_mode) }, { MATROSKA_ID_VIDEOPIXELCROPB, EBML_NONE }, { MATROSKA_ID_VIDEOPIXELCROPT, EBML_NONE }, { MATROSKA_ID_VIDEOPIXELCROPL, EBML_NONE }, @@ -339,10 +379,21 @@ static EbmlSyntax matroska_track_encoding_compression[] = { { 0 } }; +static EbmlSyntax matroska_track_encoding_encryption[] = { + { MATROSKA_ID_ENCODINGENCALGO, EBML_UINT, 0, offsetof(MatroskaTrackEncryption,algo), {.u = 0} }, + { MATROSKA_ID_ENCODINGENCKEYID, EBML_BIN, 0, offsetof(MatroskaTrackEncryption,key_id) }, + { MATROSKA_ID_ENCODINGENCAESSETTINGS, EBML_NONE }, + { MATROSKA_ID_ENCODINGSIGALGO, EBML_NONE }, + { MATROSKA_ID_ENCODINGSIGHASHALGO, EBML_NONE }, + { MATROSKA_ID_ENCODINGSIGKEYID, EBML_NONE }, + { MATROSKA_ID_ENCODINGSIGNATURE, EBML_NONE }, + { 0 } +}; static EbmlSyntax matroska_track_encoding[] = { { MATROSKA_ID_ENCODINGSCOPE, EBML_UINT, 0, offsetof(MatroskaTrackEncoding, scope), { .u = 1 } }, { MATROSKA_ID_ENCODINGTYPE, EBML_UINT, 0, offsetof(MatroskaTrackEncoding, type), { .u = 0 } }, { MATROSKA_ID_ENCODINGCOMPRESSION, EBML_NEST, 0, offsetof(MatroskaTrackEncoding, compression), { .n = matroska_track_encoding_compression } }, + { MATROSKA_ID_ENCODINGENCRYPTION, EBML_NEST, 0, offsetof(MatroskaTrackEncoding, encryption), { .n = matroska_track_encoding_encryption } }, { MATROSKA_ID_ENCODINGORDER, EBML_NONE }, { 0 } }; @@ -352,6 +403,22 @@ static EbmlSyntax matroska_track_encodings[] = { { 0 } }; +static EbmlSyntax matroska_track_plane[] = { + { MATROSKA_ID_TRACKPLANEUID, EBML_UINT, 0, offsetof(MatroskaTrackPlane,uid) }, + { MATROSKA_ID_TRACKPLANETYPE, EBML_UINT, 0, offsetof(MatroskaTrackPlane,type) }, + { 0 } +}; + +static EbmlSyntax matroska_track_combine_planes[] = { + { MATROSKA_ID_TRACKPLANE, EBML_NEST, sizeof(MatroskaTrackPlane), offsetof(MatroskaTrackOperation,combine_planes), {.n = matroska_track_plane} }, + { 0 } +}; + +static EbmlSyntax matroska_track_operation[] = { + { MATROSKA_ID_TRACKCOMBINEPLANES, EBML_NEST, 0, 0, {.n = matroska_track_combine_planes} }, + { 0 } +}; + static EbmlSyntax matroska_track[] = { { MATROSKA_ID_TRACKNUMBER, EBML_UINT, 0, offsetof(MatroskaTrack, num) }, { MATROSKA_ID_TRACKNAME, EBML_UTF8, 0, offsetof(MatroskaTrack, name) }, @@ -360,14 +427,17 @@ static EbmlSyntax matroska_track[] = { { MATROSKA_ID_CODECID, EBML_STR, 0, offsetof(MatroskaTrack, codec_id) }, { MATROSKA_ID_CODECPRIVATE, EBML_BIN, 0, offsetof(MatroskaTrack, codec_priv) }, { MATROSKA_ID_CODECDELAY, EBML_UINT, 0, offsetof(MatroskaTrack, codec_delay) }, - { MATROSKA_ID_TRACKLANGUAGE, EBML_UTF8, 0, offsetof(MatroskaTrack, language), { .s = "eng" } }, + { MATROSKA_ID_TRACKLANGUAGE, EBML_UTF8, 0, offsetof(MatroskaTrack, language), { .s = "eng" } }, { MATROSKA_ID_TRACKDEFAULTDURATION, EBML_UINT, 0, offsetof(MatroskaTrack, default_duration) }, - { MATROSKA_ID_TRACKTIMECODESCALE, EBML_FLOAT, 0, offsetof(MatroskaTrack, time_scale), { .f = 1.0 } }, - { MATROSKA_ID_TRACKFLAGDEFAULT, EBML_UINT, 0, offsetof(MatroskaTrack, flag_default), { .u = 1 } }, - { MATROSKA_ID_TRACKFLAGFORCED, EBML_UINT, 0, offsetof(MatroskaTrack, flag_forced), { .u = 0 } }, + { MATROSKA_ID_TRACKTIMECODESCALE, EBML_FLOAT, 0, offsetof(MatroskaTrack, time_scale), { .f = 1.0 } }, + { MATROSKA_ID_TRACKFLAGDEFAULT, EBML_UINT, 0, offsetof(MatroskaTrack, flag_default), { .u = 1 } }, + { MATROSKA_ID_TRACKFLAGFORCED, EBML_UINT, 0, offsetof(MatroskaTrack, flag_forced), { .u = 0 } }, { MATROSKA_ID_TRACKVIDEO, EBML_NEST, 0, offsetof(MatroskaTrack, video), { .n = matroska_track_video } }, { MATROSKA_ID_TRACKAUDIO, EBML_NEST, 0, offsetof(MatroskaTrack, audio), { .n = matroska_track_audio } }, + { MATROSKA_ID_TRACKOPERATION, EBML_NEST, 0, offsetof(MatroskaTrack, operation), { .n = matroska_track_operation } }, { MATROSKA_ID_TRACKCONTENTENCODINGS, EBML_NEST, 0, 0, { .n = matroska_track_encodings } }, + { MATROSKA_ID_TRACKMAXBLKADDID, EBML_UINT, 0, offsetof(MatroskaTrack, max_block_additional_id) }, + { MATROSKA_ID_SEEKPREROLL, EBML_UINT, 0, offsetof(MatroskaTrack, seek_preroll) }, { MATROSKA_ID_TRACKFLAGENABLED, EBML_NONE }, { MATROSKA_ID_TRACKFLAGLACING, EBML_NONE }, { MATROSKA_ID_CODECNAME, EBML_NONE }, @@ -376,7 +446,6 @@ static EbmlSyntax matroska_track[] = { { MATROSKA_ID_CODECDOWNLOADURL, EBML_NONE }, { MATROSKA_ID_TRACKMINCACHE, EBML_NONE }, { MATROSKA_ID_TRACKMAXCACHE, EBML_NONE }, - { MATROSKA_ID_TRACKMAXBLKADDID, EBML_NONE }, { 0 } }; @@ -434,6 +503,8 @@ static EbmlSyntax matroska_chapters[] = { static EbmlSyntax matroska_index_pos[] = { { MATROSKA_ID_CUETRACK, EBML_UINT, 0, offsetof(MatroskaIndexPos, track) }, { MATROSKA_ID_CUECLUSTERPOSITION, EBML_UINT, 0, offsetof(MatroskaIndexPos, pos) }, + { MATROSKA_ID_CUERELATIVEPOSITION,EBML_NONE }, + { MATROSKA_ID_CUEDURATION, EBML_NONE }, { MATROSKA_ID_CUEBLOCKNUMBER, EBML_NONE }, { 0 } }; @@ -491,13 +562,13 @@ static EbmlSyntax matroska_seekhead[] = { }; static EbmlSyntax matroska_segment[] = { - { MATROSKA_ID_INFO, EBML_NEST, 0, 0, { .n = matroska_info } }, - { MATROSKA_ID_TRACKS, EBML_NEST, 0, 0, { .n = matroska_tracks } }, - { MATROSKA_ID_ATTACHMENTS, EBML_NEST, 0, 0, { .n = matroska_attachments } }, - { MATROSKA_ID_CHAPTERS, EBML_NEST, 0, 0, { .n = matroska_chapters } }, - { MATROSKA_ID_CUES, EBML_NEST, 0, 0, { .n = matroska_index } }, - { MATROSKA_ID_TAGS, EBML_NEST, 0, 0, { .n = matroska_tags } }, - { MATROSKA_ID_SEEKHEAD, EBML_NEST, 0, 0, { .n = matroska_seekhead } }, + { MATROSKA_ID_INFO, EBML_LEVEL1, 0, 0, { .n = matroska_info } }, + { MATROSKA_ID_TRACKS, EBML_LEVEL1, 0, 0, { .n = matroska_tracks } }, + { MATROSKA_ID_ATTACHMENTS, EBML_LEVEL1, 0, 0, { .n = matroska_attachments } }, + { MATROSKA_ID_CHAPTERS, EBML_LEVEL1, 0, 0, { .n = matroska_chapters } }, + { MATROSKA_ID_CUES, EBML_LEVEL1, 0, 0, { .n = matroska_index } }, + { MATROSKA_ID_TAGS, EBML_LEVEL1, 0, 0, { .n = matroska_tags } }, + { MATROSKA_ID_SEEKHEAD, EBML_LEVEL1, 0, 0, { .n = matroska_seekhead } }, { MATROSKA_ID_CLUSTER, EBML_STOP }, { 0 } }; @@ -507,11 +578,24 @@ static EbmlSyntax matroska_segments[] = { { 0 } }; +static EbmlSyntax matroska_blockmore[] = { + { MATROSKA_ID_BLOCKADDID, EBML_UINT, 0, offsetof(MatroskaBlock,additional_id) }, + { MATROSKA_ID_BLOCKADDITIONAL, EBML_BIN, 0, offsetof(MatroskaBlock,additional) }, + { 0 } +}; + +static EbmlSyntax matroska_blockadditions[] = { + { MATROSKA_ID_BLOCKMORE, EBML_NEST, 0, 0, {.n = matroska_blockmore} }, + { 0 } +}; + static EbmlSyntax matroska_blockgroup[] = { { MATROSKA_ID_BLOCK, EBML_BIN, 0, offsetof(MatroskaBlock, bin) }, + { MATROSKA_ID_BLOCKADDITIONS, EBML_NEST, 0, 0, { .n = matroska_blockadditions} }, { MATROSKA_ID_SIMPLEBLOCK, EBML_BIN, 0, offsetof(MatroskaBlock, bin) }, - { MATROSKA_ID_BLOCKDURATION, EBML_UINT, 0, offsetof(MatroskaBlock, duration), { .u = AV_NOPTS_VALUE } }, - { MATROSKA_ID_BLOCKREFERENCE, EBML_UINT, 0, offsetof(MatroskaBlock, reference) }, + { MATROSKA_ID_BLOCKDURATION, EBML_UINT, 0, offsetof(MatroskaBlock, duration) }, + { MATROSKA_ID_DISCARDPADDING, EBML_SINT, 0, offsetof(MatroskaBlock, discard_padding) }, + { MATROSKA_ID_BLOCKREFERENCE, EBML_SINT, 0, offsetof(MatroskaBlock, reference) }, { MATROSKA_ID_CODECSTATE, EBML_NONE }, { 1, EBML_UINT, 0, offsetof(MatroskaBlock, non_simple), { .u = 1 } }, { 0 } @@ -583,7 +667,7 @@ static int matroska_resync(MatroskaDemuxContext *matroska, int64_t last_pos) id = avio_rb32(pb); // try to find a toplevel element - while (!pb->eof_reached) { + while (!avio_feof(pb)) { if (id == MATROSKA_ID_INFO || id == MATROSKA_ID_TRACKS || id == MATROSKA_ID_CUES || id == MATROSKA_ID_TAGS || id == MATROSKA_ID_SEEKHEAD || id == MATROSKA_ID_ATTACHMENTS || @@ -636,7 +720,7 @@ static int ebml_read_num(MatroskaDemuxContext *matroska, AVIOContext *pb, * use it safely here to catch EOS. */ if (!(total = avio_r8(pb))) { /* we might encounter EOS here */ - if (!pb->eof_reached) { + if (!avio_feof(pb)) { int64_t pos = avio_tell(pb); av_log(matroska->ctx, AV_LOG_ERROR, "Read error at pos. %"PRIu64" (0x%"PRIx64")\n", @@ -700,6 +784,30 @@ static int ebml_read_uint(AVIOContext *pb, int size, uint64_t *num) } /* + * Read the next element as a signed int. + * 0 is success, < 0 is failure. + */ +static int ebml_read_sint(AVIOContext *pb, int size, int64_t *num) +{ + int n = 1; + + if (size > 8) + return AVERROR_INVALIDDATA; + + if (size == 0) { + *num = 0; + } else { + *num = sign_extend(avio_r8(pb), 8); + + /* big-endian ordering; build up number */ + while (n++ < size) + *num = (*num << 8) | avio_r8(pb); + } + + return 0; +} + +/* * Read the next element as a float. * 0 is success, < 0 is failure. */ @@ -746,14 +854,15 @@ static int ebml_read_ascii(AVIOContext *pb, int size, char **str) */ static int ebml_read_binary(AVIOContext *pb, int length, EbmlBin *bin) { - av_free(bin->data); - if (!(bin->data = av_mallocz(length + FF_INPUT_BUFFER_PADDING_SIZE))) + av_fast_padded_malloc(&bin->data, &bin->size, length); + if (!bin->data) return AVERROR(ENOMEM); bin->size = length; bin->pos = avio_tell(pb); if (avio_read(pb, bin->data, length) != length) { av_freep(&bin->data); + bin->size = 0; return AVERROR(EIO); } @@ -829,9 +938,7 @@ static int ebml_parse_id(MatroskaDemuxContext *matroska, EbmlSyntax *syntax, matroska->levels[matroska->num_levels - 1].length == 0xffffffffffffff) return 0; // we reached the end of an unknown size cluster if (!syntax[i].id && id != EBML_ID_VOID && id != EBML_ID_CRC32) { - av_log(matroska->ctx, AV_LOG_INFO, "Unknown entry 0x%"PRIX32"\n", id); - if (matroska->ctx->error_recognition & AV_EF_EXPLODE) - return AVERROR_INVALIDDATA; + av_log(matroska->ctx, AV_LOG_DEBUG, "Unknown entry 0x%"PRIX32"\n", id); } return ebml_parse_elem(matroska, &syntax[i], data); } @@ -880,6 +987,42 @@ static int ebml_parse_nest(MatroskaDemuxContext *matroska, EbmlSyntax *syntax, return res; } +/* + * Allocate and return the entry for the level1 element with the given ID. If + * an entry already exists, return the existing entry. + */ +static MatroskaLevel1Element *matroska_find_level1_elem(MatroskaDemuxContext *matroska, + uint32_t id) +{ + int i; + MatroskaLevel1Element *elem; + + // Some files link to all clusters; useless. + if (id == MATROSKA_ID_CLUSTER) + return NULL; + + // There can be multiple seekheads. + if (id != MATROSKA_ID_SEEKHEAD) { + for (i = 0; i < matroska->num_level1_elems; i++) { + if (matroska->level1_elems[i].id == id) + return &matroska->level1_elems[i]; + } + } + + // Only a completely broken file would have more elements. + // It also provides a low-effort way to escape from circular seekheads + // (every iteration will add a level1 entry). + if (matroska->num_level1_elems >= FF_ARRAY_ELEMS(matroska->level1_elems)) { + av_log(matroska->ctx, AV_LOG_ERROR, "Too many level1 elements or circular seekheads.\n"); + return NULL; + } + + elem = &matroska->level1_elems[matroska->num_level1_elems++]; + *elem = (MatroskaLevel1Element){.id = id}; + + return elem; +} + static int ebml_parse_elem(MatroskaDemuxContext *matroska, EbmlSyntax *syntax, void *data) { @@ -897,16 +1040,16 @@ static int ebml_parse_elem(MatroskaDemuxContext *matroska, uint32_t id = syntax->id; uint64_t length; int res; + void *newelem; + MatroskaLevel1Element *level1_elem; data = (char *) data + syntax->data_offset; if (syntax->list_elem_size) { EbmlList *list = data; - if ((res = av_reallocp_array(&list->elem, - list->nb_elem + 1, - syntax->list_elem_size)) < 0) { - list->nb_elem = 0; - return res; - } + newelem = av_realloc_array(list->elem, list->nb_elem + 1, syntax->list_elem_size); + if (!newelem) + return AVERROR(ENOMEM); + list->elem = newelem; data = (char *) list->elem + list->nb_elem * syntax->list_elem_size; memset(data, 0, syntax->list_elem_size); list->nb_elem++; @@ -928,6 +1071,9 @@ static int ebml_parse_elem(MatroskaDemuxContext *matroska, case EBML_UINT: res = ebml_read_uint(pb, length, data); break; + case EBML_SINT: + res = ebml_read_sint(pb, length, data); + break; case EBML_FLOAT: res = ebml_read_float(pb, length, data); break; @@ -938,17 +1084,28 @@ static int ebml_parse_elem(MatroskaDemuxContext *matroska, case EBML_BIN: res = ebml_read_binary(pb, length, data); break; + case EBML_LEVEL1: case EBML_NEST: if ((res = ebml_read_master(matroska, length)) < 0) return res; if (id == MATROSKA_ID_SEGMENT) matroska->segment_start = avio_tell(matroska->ctx->pb); + if (id == MATROSKA_ID_CUES) + matroska->cues_parsing_deferred = 0; + if (syntax->type == EBML_LEVEL1 && + (level1_elem = matroska_find_level1_elem(matroska, syntax->id))) { + if (level1_elem->parsed) + av_log(matroska->ctx, AV_LOG_ERROR, "Duplicate element\n"); + level1_elem->parsed = 1; + } 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: + if (ffio_limit(pb, length) != length) + return AVERROR(EIO); return avio_skip(pb, length) < 0 ? AVERROR(EIO) : 0; } if (res == AVERROR_INVALIDDATA) @@ -971,6 +1128,7 @@ static void ebml_free(EbmlSyntax *syntax, void *data) case EBML_BIN: av_freep(&((EbmlBin *) data_off)->data); break; + case EBML_LEVEL1: case EBML_NEST: if (syntax[i].list_elem_size) { EbmlList *list = data_off; @@ -978,7 +1136,7 @@ static void ebml_free(EbmlSyntax *syntax, void *data) for (j = 0; j < list->nb_elem; j++, ptr += syntax[i].list_elem_size) ebml_free(syntax[i].def.n, ptr); - av_free(list->elem); + av_freep(&list->elem); } else ebml_free(syntax[i].def.n, data_off); default: @@ -1058,7 +1216,7 @@ static int matroska_decode_buffer(uint8_t **buf, int *buf_size, int result = 0; int olen; - if (pkt_size >= 10000000) + if (pkt_size >= 10000000U) return AVERROR_INVALIDDATA; switch (encodings[0].compression.algo) { @@ -1067,6 +1225,11 @@ static int matroska_decode_buffer(uint8_t **buf, int *buf_size, int header_size = encodings[0].compression.settings.size; uint8_t *header = encodings[0].compression.settings.data; + if (header_size && !header) { + av_log(NULL, AV_LOG_ERROR, "Compression size but no data in headerstrip\n"); + return -1; + } + if (!header_size) return 0; @@ -1116,7 +1279,10 @@ static int matroska_decode_buffer(uint8_t **buf, int *buf_size, pkt_data = newpktdata; zstream.avail_out = pkt_size - zstream.total_out; zstream.next_out = pkt_data + zstream.total_out; - result = inflate(&zstream, Z_NO_FLUSH); + if (pkt_data) { + result = inflate(&zstream, Z_NO_FLUSH); + } else + result = Z_MEM_ERROR; } while (result == Z_OK && pkt_size < 10000000); pkt_size = zstream.total_out; inflateEnd(&zstream); @@ -1148,7 +1314,10 @@ static int matroska_decode_buffer(uint8_t **buf, int *buf_size, pkt_data = newpktdata; bzstream.avail_out = pkt_size - bzstream.total_out_lo32; bzstream.next_out = pkt_data + bzstream.total_out_lo32; - result = BZ2_bzDecompress(&bzstream); + if (pkt_data) { + result = BZ2_bzDecompress(&bzstream); + } else + result = BZ_MEM_ERROR; } while (result == BZ_OK && pkt_size < 10000000); pkt_size = bzstream.total_out_lo32; BZ2_bzDecompressEnd(&bzstream); @@ -1175,63 +1344,6 @@ failed: return result; } -static void matroska_fix_ass_packet(MatroskaDemuxContext *matroska, - AVPacket *pkt, uint64_t display_duration) -{ - AVBufferRef *line; - char *layer, *ptr = pkt->data, *end = ptr + pkt->size; - - for (; *ptr != ',' && ptr < end - 1; ptr++) - ; - if (*ptr == ',') - layer = ++ptr; - for (; *ptr != ',' && ptr < end - 1; ptr++) - ; - if (*ptr == ',') { - int64_t end_pts = pkt->pts + display_duration; - int sc = matroska->time_scale * pkt->pts / 10000000; - int ec = matroska->time_scale * end_pts / 10000000; - int sh, sm, ss, eh, em, es, len; - sh = sc / 360000; - sc -= 360000 * sh; - sm = sc / 6000; - sc -= 6000 * sm; - ss = sc / 100; - sc -= 100 * ss; - eh = ec / 360000; - ec -= 360000 * eh; - em = ec / 6000; - ec -= 6000 * em; - es = ec / 100; - ec -= 100 * es; - *ptr++ = '\0'; - len = 50 + end - ptr + FF_INPUT_BUFFER_PADDING_SIZE; - if (!(line = av_buffer_alloc(len))) - return; - snprintf(line->data, len, - "Dialogue: %s,%d:%02d:%02d.%02d,%d:%02d:%02d.%02d,%s\r\n", - layer, sh, sm, ss, sc, eh, em, es, ec, ptr); - av_buffer_unref(&pkt->buf); - pkt->buf = line; - pkt->data = line->data; - pkt->size = strlen(line->data); - } -} - -static int matroska_merge_packets(AVPacket *out, AVPacket *in) -{ - int old_size = out->size; - int ret = av_grow_packet(out, in->size); - if (ret < 0) - return ret; - - memcpy(out->data + old_size, in->data, in->size); - - av_free_packet(in); - av_free(in); - return 0; -} - static void matroska_convert_tag(AVFormatContext *s, EbmlList *list, AVDictionary **metadata, char *prefix) { @@ -1302,24 +1414,17 @@ static void matroska_convert_tags(AVFormatContext *s) } static int matroska_parse_seekhead_entry(MatroskaDemuxContext *matroska, - int idx) + uint64_t pos) { - EbmlList *seekhead_list = &matroska->seekhead; uint32_t level_up = matroska->level_up; uint32_t saved_id = matroska->current_id; - MatroskaSeekhead *seekhead = seekhead_list->elem; int64_t before_pos = avio_tell(matroska->ctx->pb); MatroskaLevel level; int64_t offset; int ret = 0; - if (idx >= seekhead_list->nb_elem || - seekhead[idx].id == MATROSKA_ID_SEEKHEAD || - seekhead[idx].id == MATROSKA_ID_CLUSTER) - return 0; - /* seek */ - offset = seekhead[idx].pos + matroska->segment_start; + offset = pos + matroska->segment_start; if (avio_seek(matroska->ctx->pb, offset, SEEK_SET) == offset) { /* We don't want to lose our seekhead level, so we add * a dummy. This is a crude hack. */ @@ -1356,45 +1461,46 @@ static int matroska_parse_seekhead_entry(MatroskaDemuxContext *matroska, static void matroska_execute_seekhead(MatroskaDemuxContext *matroska) { EbmlList *seekhead_list = &matroska->seekhead; - int64_t before_pos = avio_tell(matroska->ctx->pb); int i; // we should not do any seeking in the streaming case - if (!matroska->ctx->pb->seekable || - (matroska->ctx->flags & AVFMT_FLAG_IGNIDX)) + if (!matroska->ctx->pb->seekable) return; for (i = 0; i < seekhead_list->nb_elem; i++) { - MatroskaSeekhead *seekhead = seekhead_list->elem; - if (seekhead[i].pos <= before_pos) + MatroskaSeekhead *seekheads = seekhead_list->elem; + uint32_t id = seekheads[i].id; + uint64_t pos = seekheads[i].pos; + + MatroskaLevel1Element *elem = matroska_find_level1_elem(matroska, id); + if (!elem || elem->parsed) continue; + elem->pos = pos; + // defer cues parsing until we actually need cue data. - if (seekhead[i].id == MATROSKA_ID_CUES) { - matroska->cues_parsing_deferred = 1; + if (id == MATROSKA_ID_CUES) continue; - } - if (matroska_parse_seekhead_entry(matroska, i) < 0) + if (matroska_parse_seekhead_entry(matroska, pos) < 0) { + // mark index as broken + matroska->cues_parsing_deferred = -1; break; + } + + elem->parsed = 1; } } -static void matroska_parse_cues(MatroskaDemuxContext *matroska) +static void matroska_add_index_entries(MatroskaDemuxContext *matroska) { - EbmlList *seekhead_list = &matroska->seekhead; - MatroskaSeekhead *seekhead = seekhead_list->elem; EbmlList *index_list; MatroskaIndex *index; int index_scale = 1; int i, j; - for (i = 0; i < seekhead_list->nb_elem; i++) - if (seekhead[i].id == MATROSKA_ID_CUES) - break; - assert(i <= seekhead_list->nb_elem); - - matroska_parse_seekhead_entry(matroska, i); + if (matroska->ctx->flags & AVFMT_FLAG_IGNIDX) + return; index_list = &matroska->index; index = index_list->elem; @@ -1418,6 +1524,25 @@ static void matroska_parse_cues(MatroskaDemuxContext *matroska) } } +static void matroska_parse_cues(MatroskaDemuxContext *matroska) { + int i; + + if (matroska->ctx->flags & AVFMT_FLAG_IGNIDX) + return; + + for (i = 0; i < matroska->num_level1_elems; i++) { + MatroskaLevel1Element *elem = &matroska->level1_elems[i]; + if (elem->id == MATROSKA_ID_CUES && !elem->parsed) { + if (matroska_parse_seekhead_entry(matroska, elem->pos) < 0) + matroska->cues_parsing_deferred = -1; + elem->parsed = 1; + break; + } + } + + matroska_add_index_entries(matroska); +} + static int matroska_aac_profile(char *codec_id) { static const char *const aac_profiles[] = { "MAIN", "LC", "SSR" }; @@ -1439,6 +1564,17 @@ static int matroska_aac_sri(int samplerate) return sri; } +static void matroska_metadata_creation_time(AVDictionary **metadata, int64_t date_utc) +{ + char buffer[32]; + /* Convert to seconds and adjust by number of seconds between 2001-01-01 and Epoch */ + time_t creation_time = date_utc / 1000000000 + 978307200; + struct tm tmpbuf, *ptm = gmtime_r(&creation_time, &tmpbuf); + if (!ptm) return; + if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm)) + av_dict_set(metadata, "creation_time", buffer, 0); +} + static int matroska_parse_flac(AVFormatContext *s, MatroskaTrack *track, int *offset) @@ -1500,6 +1636,7 @@ static int matroska_parse_tracks(AVFormatContext *s) MatroskaTrack *tracks = matroska->tracks.elem; AVStream *st; int i, j, ret; + int k; for (i = 0; i < matroska->tracks.nb_elem; i++) { MatroskaTrack *track = &tracks[i]; @@ -1509,12 +1646,16 @@ static int matroska_parse_tracks(AVFormatContext *s) uint8_t *extradata = NULL; int extradata_size = 0; int extradata_offset = 0; + uint32_t fourcc = 0; AVIOContext b; + char* key_id_base64 = NULL; + int bit_depth = -1; /* Apply some sanity checks. */ if (track->type != MATROSKA_TRACK_TYPE_VIDEO && track->type != MATROSKA_TRACK_TYPE_AUDIO && - track->type != MATROSKA_TRACK_TYPE_SUBTITLE) { + track->type != MATROSKA_TRACK_TYPE_SUBTITLE && + track->type != MATROSKA_TRACK_TYPE_METADATA) { av_log(matroska->ctx, AV_LOG_INFO, "Unknown or unsupported track type %"PRIu64"\n", track->type); @@ -1526,10 +1667,12 @@ static int matroska_parse_tracks(AVFormatContext *s) if (track->type == MATROSKA_TRACK_TYPE_VIDEO) { if (!track->default_duration && track->video.frame_rate > 0) track->default_duration = 1000000000 / track->video.frame_rate; - if (!track->video.display_width) + if (track->video.display_width == -1) track->video.display_width = track->video.pixel_width; - if (!track->video.display_height) + if (track->video.display_height == -1) track->video.display_height = track->video.pixel_height; + if (track->video.color_space.size == 4) + fourcc = AV_RL32(track->video.color_space.data); } else if (track->type == MATROSKA_TRACK_TYPE_AUDIO) { if (!track->audio.out_samplerate) track->audio.out_samplerate = track->audio.samplerate; @@ -1538,8 +1681,24 @@ static int matroska_parse_tracks(AVFormatContext *s) av_log(matroska->ctx, AV_LOG_ERROR, "Multiple combined encodings not supported"); } else if (encodings_list->nb_elem == 1) { - if (encodings[0].type || - ( + if (encodings[0].type) { + if (encodings[0].encryption.key_id.size > 0) { + /* Save the encryption key id to be stored later as a + metadata tag. */ + const int b64_size = AV_BASE64_SIZE(encodings[0].encryption.key_id.size); + key_id_base64 = av_malloc(b64_size); + if (key_id_base64 == NULL) + return AVERROR(ENOMEM); + + av_base64_encode(key_id_base64, b64_size, + encodings[0].encryption.key_id.data, + encodings[0].encryption.key_id.size); + } else { + encodings[0].scope = 0; + av_log(matroska->ctx, AV_LOG_ERROR, + "Unsupported encoding type"); + } + } else if ( #if CONFIG_ZLIB encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_ZLIB && #endif @@ -1549,7 +1708,7 @@ static int matroska_parse_tracks(AVFormatContext *s) #if CONFIG_LZO encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_LZO && #endif - encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP)) { + encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP) { encodings[0].scope = 0; av_log(matroska->ctx, AV_LOG_ERROR, "Unsupported encoding type"); @@ -1579,16 +1738,28 @@ static int matroska_parse_tracks(AVFormatContext *s) } st = track->stream = avformat_new_stream(s, NULL); - if (!st) + if (!st) { + av_free(key_id_base64); return AVERROR(ENOMEM); + } + + if (key_id_base64) { + /* export encryption key id as base64 metadata tag */ + av_dict_set(&st->metadata, "enc_key_id", key_id_base64, 0); + av_freep(&key_id_base64); + } if (!strcmp(track->codec_id, "V_MS/VFW/FOURCC") && - track->codec_priv.size >= 40 && + track->codec_priv.size >= 40 && track->codec_priv.data) { track->ms_compat = 1; - track->video.fourcc = AV_RL32(track->codec_priv.data + 16); + bit_depth = AV_RL16(track->codec_priv.data + 14); + fourcc = AV_RL32(track->codec_priv.data + 16); codec_id = ff_codec_get_id(ff_codec_bmp_tags, - track->video.fourcc); + fourcc); + if (!codec_id) + codec_id = ff_codec_get_id(ff_codec_movvideo_tags, + fourcc); extradata_offset = 40; } else if (!strcmp(track->codec_id, "A_MS/ACM") && track->codec_priv.size >= 14 && @@ -1597,17 +1768,31 @@ static int matroska_parse_tracks(AVFormatContext *s) ffio_init_context(&b, track->codec_priv.data, track->codec_priv.size, 0, NULL, NULL, NULL, NULL); - ret = ff_get_wav_header(&b, st->codec, track->codec_priv.size); + ret = ff_get_wav_header(&b, st->codec, track->codec_priv.size, 0); 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, "A_QUICKTIME") + && (track->codec_priv.size >= 86) + && (track->codec_priv.data)) { + fourcc = AV_RL32(track->codec_priv.data + 4); + codec_id = ff_codec_get_id(ff_codec_movaudio_tags, fourcc); + if (ff_codec_get_id(ff_codec_movaudio_tags, AV_RL32(track->codec_priv.data))) { + fourcc = AV_RL32(track->codec_priv.data); + codec_id = ff_codec_get_id(ff_codec_movaudio_tags, fourcc); + } } else if (!strcmp(track->codec_id, "V_QUICKTIME") && - (track->codec_priv.size >= 86) && + (track->codec_priv.size >= 21) && (track->codec_priv.data)) { - track->video.fourcc = AV_RL32(track->codec_priv.data); - codec_id = ff_codec_get_id(ff_codec_movvideo_tags, - track->video.fourcc); + fourcc = AV_RL32(track->codec_priv.data + 4); + codec_id = ff_codec_get_id(ff_codec_movvideo_tags, fourcc); + if (ff_codec_get_id(ff_codec_movvideo_tags, AV_RL32(track->codec_priv.data))) { + fourcc = AV_RL32(track->codec_priv.data); + codec_id = ff_codec_get_id(ff_codec_movvideo_tags, fourcc); + } + if (codec_id == AV_CODEC_ID_NONE && AV_RL32(track->codec_priv.data+4) == AV_RL32("SMI ")) + codec_id = AV_CODEC_ID_SVQ3; } else if (codec_id == AV_CODEC_ID_PCM_S16BE) { switch (track->audio.bitdepth) { case 8: @@ -1651,7 +1836,7 @@ static int matroska_parse_tracks(AVFormatContext *s) extradata_size = 5; } else extradata_size = 2; - } else if (codec_id == AV_CODEC_ID_ALAC && track->codec_priv.size) { + } else if (codec_id == AV_CODEC_ID_ALAC && track->codec_priv.size && track->codec_priv.size < INT_MAX - 12 - FF_INPUT_BUFFER_PADDING_SIZE) { /* Only ALAC's magic cookie is stored in Matroska's track headers. * Create the "atom size", "tag", and "tag version" fields the * decoder expects manually. */ @@ -1667,7 +1852,7 @@ static int matroska_parse_tracks(AVFormatContext *s) track->codec_priv.size); } else if (codec_id == AV_CODEC_ID_TTA) { extradata_size = 30; - extradata = av_mallocz(extradata_size); + extradata = av_mallocz(extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); if (!extradata) return AVERROR(ENOMEM); ffio_init_context(&b, extradata, extradata_size, 1, @@ -1676,9 +1861,12 @@ static int matroska_parse_tracks(AVFormatContext *s) avio_wl16(&b, 1); avio_wl16(&b, track->audio.channels); avio_wl16(&b, track->audio.bitdepth); + if (track->audio.out_samplerate < 0 || track->audio.out_samplerate > INT_MAX) + return AVERROR_INVALIDDATA; avio_wl32(&b, track->audio.out_samplerate); - avio_wl32(&b, matroska->ctx->duration * - track->audio.out_samplerate); + avio_wl32(&b, av_rescale((matroska->duration * matroska->time_scale), + track->audio.out_samplerate, + AV_TIME_BASE * 1000)); } else if (codec_id == AV_CODEC_ID_RV10 || codec_id == AV_CODEC_ID_RV20 || codec_id == AV_CODEC_ID_RV30 || @@ -1687,11 +1875,13 @@ static int matroska_parse_tracks(AVFormatContext *s) } else if (codec_id == AV_CODEC_ID_RA_144) { track->audio.out_samplerate = 8000; track->audio.channels = 1; - } else if (codec_id == AV_CODEC_ID_RA_288 || - codec_id == AV_CODEC_ID_COOK || - codec_id == AV_CODEC_ID_ATRAC3 || - codec_id == AV_CODEC_ID_SIPR) { + } else if ((codec_id == AV_CODEC_ID_RA_288 || + codec_id == AV_CODEC_ID_COOK || + codec_id == AV_CODEC_ID_ATRAC3 || + codec_id == AV_CODEC_ID_SIPR) + && track->codec_priv.data) { int flavor; + ffio_init_context(&b, track->codec_priv.data, track->codec_priv.size, 0, NULL, NULL, NULL, NULL); @@ -1702,20 +1892,22 @@ static int matroska_parse_tracks(AVFormatContext *s) track->audio.sub_packet_h = avio_rb16(&b); track->audio.frame_size = avio_rb16(&b); track->audio.sub_packet_size = avio_rb16(&b); - if (flavor <= 0 || + if (flavor < 0 || track->audio.coded_framesize <= 0 || track->audio.sub_packet_h <= 0 || track->audio.frame_size <= 0 || track->audio.sub_packet_size <= 0) return AVERROR_INVALIDDATA; - track->audio.buf = av_malloc(track->audio.frame_size * - track->audio.sub_packet_h); + track->audio.buf = av_malloc_array(track->audio.sub_packet_h, + track->audio.frame_size); + if (!track->audio.buf) + return AVERROR(ENOMEM); if (codec_id == AV_CODEC_ID_RA_288) { st->codec->block_align = track->audio.coded_framesize; track->codec_priv.size = 0; } else { if (codec_id == AV_CODEC_ID_SIPR && flavor < 4) { - const int sipr_bit_rate[4] = { 6504, 8496, 5000, 16000 }; + static const int sipr_bit_rate[4] = { 6504, 8496, 5000, 16000 }; track->audio.sub_packet_size = ff_sipr_subpk_size[flavor]; st->codec->bit_rate = sipr_bit_rate[flavor]; } @@ -1726,6 +1918,8 @@ static int matroska_parse_tracks(AVFormatContext *s) ret = matroska_parse_flac(s, track, &extradata_offset); if (ret < 0) return ret; + } else if (codec_id == AV_CODEC_ID_PRORES && track->codec_priv.size == 4) { + fourcc = AV_RL32(track->codec_priv.data); } track->codec_priv.size -= extradata_offset; @@ -1744,7 +1938,7 @@ static int matroska_parse_tracks(AVFormatContext *s) st->time_base); st->codec->codec_id = codec_id; - st->start_time = 0; + if (strcmp(track->language, "und")) av_dict_set(&st->metadata, "language", track->language, 0); av_dict_set(&st->metadata, "title", track->name, 0); @@ -1759,11 +1953,8 @@ static int matroska_parse_tracks(AVFormatContext *s) st->codec->extradata = extradata; st->codec->extradata_size = extradata_size; } else if (track->codec_priv.data && track->codec_priv.size > 0) { - st->codec->extradata = av_mallocz(track->codec_priv.size + - FF_INPUT_BUFFER_PADDING_SIZE); - if (!st->codec->extradata) + if (ff_alloc_extradata(st->codec, track->codec_priv.size)) return AVERROR(ENOMEM); - st->codec->extradata_size = track->codec_priv.size; memcpy(st->codec->extradata, track->codec_priv.data + extradata_offset, track->codec_priv.size); @@ -1771,8 +1962,12 @@ static int matroska_parse_tracks(AVFormatContext *s) } if (track->type == MATROSKA_TRACK_TYPE_VIDEO) { + MatroskaTrackPlane *planes = track->operation.combine_planes.elem; + st->codec->codec_type = AVMEDIA_TYPE_VIDEO; - st->codec->codec_tag = track->video.fourcc; + st->codec->codec_tag = fourcc; + if (bit_depth >= 0) + st->codec->bits_per_coded_sample = bit_depth; st->codec->width = track->video.pixel_width; st->codec->height = track->video.pixel_height; av_reduce(&st->sample_aspect_ratio.num, @@ -1780,12 +1975,40 @@ static int matroska_parse_tracks(AVFormatContext *s) st->codec->height * track->video.display_width, st->codec->width * track->video.display_height, 255); - if (st->codec->codec_id != AV_CODEC_ID_H264 && - st->codec->codec_id != AV_CODEC_ID_HEVC) + if (st->codec->codec_id != AV_CODEC_ID_HEVC) st->need_parsing = AVSTREAM_PARSE_HEADERS; + if (track->default_duration) { av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den, 1000000000, track->default_duration, 30000); +#if FF_API_R_FRAME_RATE + if ( st->avg_frame_rate.num < st->avg_frame_rate.den * 1000LL + && st->avg_frame_rate.num > st->avg_frame_rate.den * 5LL) + st->r_frame_rate = st->avg_frame_rate; +#endif + } + + /* export stereo mode flag as metadata tag */ + if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB) + av_dict_set(&st->metadata, "stereo_mode", ff_matroska_video_stereo_mode[track->video.stereo_mode], 0); + + /* export alpha mode flag as metadata tag */ + if (track->video.alpha_mode) + av_dict_set(&st->metadata, "alpha_mode", "1", 0); + + /* if we have virtual track, mark the real tracks */ + for (j=0; j < track->operation.combine_planes.nb_elem; j++) { + char buf[32]; + if (planes[j].type >= MATROSKA_VIDEO_STEREO_PLANE_COUNT) + continue; + snprintf(buf, sizeof(buf), "%s_%d", + ff_matroska_video_stereo_plane[planes[j].type], i); + for (k=0; k < matroska->tracks.nb_elem; k++) + if (planes[j].uid == tracks[k].uid) { + av_dict_set(&s->streams[k]->metadata, + "stereo_mode", buf, 0); + break; + } } // add stream level stereo3d side data if it is a supported format if (track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB && @@ -1798,11 +2021,34 @@ static int matroska_parse_tracks(AVFormatContext *s) st->codec->codec_type = AVMEDIA_TYPE_AUDIO; st->codec->sample_rate = track->audio.out_samplerate; st->codec->channels = track->audio.channels; + if (!st->codec->bits_per_coded_sample) + st->codec->bits_per_coded_sample = track->audio.bitdepth; if (st->codec->codec_id != AV_CODEC_ID_AAC) st->need_parsing = AVSTREAM_PARSE_HEADERS; + if (track->codec_delay > 0) { + st->codec->delay = av_rescale_q(track->codec_delay, + st->time_base, + (AVRational){1, st->codec->sample_rate}); + } + if (track->seek_preroll > 0) { + av_codec_set_seek_preroll(st->codec, + av_rescale_q(track->seek_preroll, + (AVRational){1, 1000000000}, + (AVRational){1, st->codec->sample_rate})); + } + } else if (codec_id == AV_CODEC_ID_WEBVTT) { + st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; + + if (!strcmp(track->codec_id, "D_WEBVTT/CAPTIONS")) { + st->disposition |= AV_DISPOSITION_CAPTIONS; + } else if (!strcmp(track->codec_id, "D_WEBVTT/DESCRIPTIONS")) { + st->disposition |= AV_DISPOSITION_DESCRIPTIONS; + } else if (!strcmp(track->codec_id, "D_WEBVTT/METADATA")) { + st->disposition |= AV_DISPOSITION_METADATA; + } } else if (track->type == MATROSKA_TRACK_TYPE_SUBTITLE) { st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; - if (st->codec->codec_id == AV_CODEC_ID_SSA) + if (st->codec->codec_id == AV_CODEC_ID_ASS) matroska->contains_ssa = 1; } } @@ -1823,19 +2069,26 @@ static int matroska_read_header(AVFormatContext *s) int i, j, res; matroska->ctx = s; + matroska->cues_parsing_deferred = 1; /* First read the EBML header. */ if (ebml_parse(matroska, ebml_syntax, &ebml) || ebml.version > EBML_VERSION || ebml.max_size > sizeof(uint64_t) || ebml.id_length > sizeof(uint32_t) || - ebml.doctype_version > 3) { + ebml.doctype_version > 3 || + !ebml.doctype) { av_log(matroska->ctx, AV_LOG_ERROR, "EBML header using unsupported features\n" "(EBML version %"PRIu64", doctype %s, doc version %"PRIu64")\n", ebml.version, ebml.doctype, ebml.doctype_version); ebml_free(ebml_syntax, &ebml); return AVERROR_PATCHWELCOME; + } else if (ebml.doctype_version == 3) { + av_log(matroska->ctx, AV_LOG_WARNING, + "EBML header using unsupported features\n" + "(EBML version %"PRIu64", doctype %s, doc version %"PRIu64")\n", + ebml.version, ebml.doctype, ebml.doctype_version); } for (i = 0; i < FF_ARRAY_ELEMS(matroska_doctypes); i++) if (!strcmp(ebml.doctype, matroska_doctypes[i])) @@ -1868,6 +2121,10 @@ static int matroska_read_header(AVFormatContext *s) matroska->ctx->duration = matroska->duration * matroska->time_scale * 1000 / AV_TIME_BASE; av_dict_set(&s->metadata, "title", matroska->title, 0); + av_dict_set(&s->metadata, "encoder", matroska->muxingapp, 0); + + if (matroska->date_utc.size == 8) + matroska_metadata_creation_time(&s->metadata, AV_RB64(matroska->date_utc.data)); res = matroska_parse_tracks(s); if (res < 0) @@ -1886,10 +2143,8 @@ static int matroska_read_header(AVFormatContext *s) av_dict_set(&st->metadata, "mimetype", attachments[j].mime, 0); st->codec->codec_id = AV_CODEC_ID_NONE; st->codec->codec_type = AVMEDIA_TYPE_ATTACHMENT; - st->codec->extradata = av_malloc(attachments[j].bin.size); - if (!st->codec->extradata) + if (ff_alloc_extradata(st->codec, attachments[j].bin.size)) break; - st->codec->extradata_size = attachments[j].bin.size; memcpy(st->codec->extradata, attachments[j].bin.data, attachments[j].bin.size); @@ -1913,11 +2168,15 @@ static int matroska_read_header(AVFormatContext *s) (AVRational) { 1, 1000000000 }, chapters[i].start, chapters[i].end, chapters[i].title); - av_dict_set(&chapters[i].chapter->metadata, - "title", chapters[i].title, 0); + if (chapters[i].chapter) { + av_dict_set(&chapters[i].chapter->metadata, + "title", chapters[i].title, 0); + } max_start = chapters[i].start; } + matroska_add_index_entries(matroska); + matroska_convert_tags(s); return 0; @@ -1932,7 +2191,7 @@ static int matroska_deliver_packet(MatroskaDemuxContext *matroska, { if (matroska->num_packets > 0) { memcpy(pkt, matroska->packets[0], sizeof(AVPacket)); - av_free(matroska->packets[0]); + av_freep(&matroska->packets[0]); if (matroska->num_packets > 1) { void *newpackets; memmove(&matroska->packets[0], &matroska->packets[1], @@ -1963,7 +2222,7 @@ static void matroska_clear_queue(MatroskaDemuxContext *matroska) int n; for (n = 0; n < matroska->num_packets; n++) { av_free_packet(matroska->packets[n]); - av_free(matroska->packets[n]); + av_freep(&matroska->packets[n]); } av_freep(&matroska->packets); matroska->num_packets = 0; @@ -1988,7 +2247,7 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf, return 0; } - assert(size > 0); + av_assert0(size > 0); *laces = *data + 1; data += 1; size -= 1; @@ -2003,18 +2262,18 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf, uint32_t total = 0; for (n = 0; res == 0 && n < *laces - 1; n++) { while (1) { - if (size == 0) { - res = AVERROR_EOF; + if (size <= total) { + res = AVERROR_INVALIDDATA; break; } temp = *data; + total += temp; lace_size[n] += temp; data += 1; size -= 1; if (temp != 0xff) break; } - total += lace_size[n]; } if (size <= total) { res = AVERROR_INVALIDDATA; @@ -2039,10 +2298,10 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf, uint64_t num; uint64_t total; n = matroska_ebmlnum_uint(matroska, data, size, &num); - if (n < 0) { + if (n < 0 || num > INT_MAX) { av_log(matroska->ctx, AV_LOG_INFO, "EBML block data error\n"); - res = n; + res = n<0 ? n : AVERROR_INVALIDDATA; break; } data += n; @@ -2052,10 +2311,10 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf, int64_t snum; int r; r = matroska_ebmlnum_sint(matroska, data, size, &snum); - if (r < 0) { + if (r < 0 || lace_size[n - 1] + snum > (uint64_t)INT_MAX) { av_log(matroska->ctx, AV_LOG_INFO, "EBML block data error\n"); - res = r; + res = r<0 ? r : AVERROR_INVALIDDATA; break; } data += r; @@ -2082,7 +2341,7 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf, static int matroska_parse_rm_audio(MatroskaDemuxContext *matroska, MatroskaTrack *track, AVStream *st, uint8_t *data, int size, uint64_t timecode, - uint64_t duration, int64_t pos) + int64_t pos) { int a = st->codec->block_align; int sps = track->audio.sub_packet_size; @@ -2112,7 +2371,7 @@ static int matroska_parse_rm_audio(MatroskaDemuxContext *matroska, } memcpy(track->audio.buf + y * w, data, w); } else { - if (size < sps * w / sps) { + if (size < sps * w / sps || h<=0 || w%sps) { av_log(matroska->ctx, AV_LOG_ERROR, "Corrupt generic RM-style audio packet size\n"); return AVERROR_INVALIDDATA; @@ -2236,18 +2495,136 @@ fail: return ret; } +static int matroska_parse_webvtt(MatroskaDemuxContext *matroska, + MatroskaTrack *track, + AVStream *st, + uint8_t *data, int data_len, + uint64_t timecode, + uint64_t duration, + int64_t pos) +{ + AVPacket *pkt; + uint8_t *id, *settings, *text, *buf; + int id_len, settings_len, text_len; + uint8_t *p, *q; + int err; + + if (data_len <= 0) + return AVERROR_INVALIDDATA; + + p = data; + q = data + data_len; + + id = p; + id_len = -1; + while (p < q) { + if (*p == '\r' || *p == '\n') { + id_len = p - id; + if (*p == '\r') + p++; + break; + } + p++; + } + + if (p >= q || *p != '\n') + return AVERROR_INVALIDDATA; + p++; + + settings = p; + settings_len = -1; + while (p < q) { + if (*p == '\r' || *p == '\n') { + settings_len = p - settings; + if (*p == '\r') + p++; + break; + } + p++; + } + + if (p >= q || *p != '\n') + return AVERROR_INVALIDDATA; + p++; + + text = p; + text_len = q - p; + while (text_len > 0) { + const int len = text_len - 1; + const uint8_t c = p[len]; + if (c != '\r' && c != '\n') + break; + text_len = len; + } + + if (text_len <= 0) + return AVERROR_INVALIDDATA; + + pkt = av_mallocz(sizeof(*pkt)); + if (!pkt) + return AVERROR(ENOMEM); + err = av_new_packet(pkt, text_len); + if (err < 0) { + av_free(pkt); + return AVERROR(err); + } + + memcpy(pkt->data, text, text_len); + + if (id_len > 0) { + buf = av_packet_new_side_data(pkt, + AV_PKT_DATA_WEBVTT_IDENTIFIER, + id_len); + if (!buf) { + av_free(pkt); + return AVERROR(ENOMEM); + } + memcpy(buf, id, id_len); + } + + if (settings_len > 0) { + buf = av_packet_new_side_data(pkt, + AV_PKT_DATA_WEBVTT_SETTINGS, + settings_len); + if (!buf) { + av_free(pkt); + return AVERROR(ENOMEM); + } + memcpy(buf, settings, settings_len); + } + + // Do we need this for subtitles? + // pkt->flags = AV_PKT_FLAG_KEY; + + pkt->stream_index = st->index; + pkt->pts = timecode; + + // Do we need this for subtitles? + // pkt->dts = timecode; + + pkt->duration = duration; + pkt->pos = pos; + + dynarray_add(&matroska->packets, &matroska->num_packets, pkt); + matroska->prev_pkt = pkt; + + return 0; +} + static int matroska_parse_frame(MatroskaDemuxContext *matroska, MatroskaTrack *track, AVStream *st, uint8_t *data, int pkt_size, - uint64_t timecode, uint64_t duration, - int64_t pos, int is_keyframe) + uint64_t timecode, uint64_t lace_duration, + int64_t pos, int is_keyframe, + uint8_t *additional, uint64_t additional_id, int additional_size, + int64_t discard_padding) { MatroskaTrackEncoding *encodings = track->encodings.elem; uint8_t *pkt_data = data; int offset = 0, res; AVPacket *pkt; - if (encodings && encodings->scope & 1) { + if (encodings && !encodings->type && encodings->scope & 1) { res = matroska_decode_buffer(&pkt_data, &pkt_size, track); if (res < 0) return res; @@ -2266,18 +2643,21 @@ static int matroska_parse_frame(MatroskaDemuxContext *matroska, pkt_data = wv_data; } - if (st->codec->codec_id == AV_CODEC_ID_PRORES) + if (st->codec->codec_id == AV_CODEC_ID_PRORES && + AV_RB32(&data[4]) != MKBETAG('i', 'c', 'p', 'f')) offset = 8; pkt = av_mallocz(sizeof(AVPacket)); + if (!pkt) + return AVERROR(ENOMEM); /* XXX: prevent data copy... */ if (av_new_packet(pkt, pkt_size + offset) < 0) { av_free(pkt); - av_freep(&pkt_data); - return AVERROR(ENOMEM); + res = AVERROR(ENOMEM); + goto fail; } - if (st->codec->codec_id == AV_CODEC_ID_PRORES) { + if (st->codec->codec_id == AV_CODEC_ID_PRORES && offset == 8) { uint8_t *buf = pkt->data; bytestream_put_be32(&buf, pkt_size); bytestream_put_be32(&buf, MKBETAG('i', 'c', 'p', 'f')); @@ -2286,35 +2666,71 @@ static int matroska_parse_frame(MatroskaDemuxContext *matroska, memcpy(pkt->data + offset, pkt_data, pkt_size); if (pkt_data != data) - av_free(pkt_data); + av_freep(&pkt_data); pkt->flags = is_keyframe; pkt->stream_index = st->index; + if (additional_size > 0) { + uint8_t *side_data = av_packet_new_side_data(pkt, + AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL, + additional_size + 8); + if (!side_data) { + av_free_packet(pkt); + av_free(pkt); + return AVERROR(ENOMEM); + } + AV_WB64(side_data, additional_id); + memcpy(side_data + 8, additional, additional_size); + } + + if (discard_padding) { + uint8_t *side_data = av_packet_new_side_data(pkt, + AV_PKT_DATA_SKIP_SAMPLES, + 10); + if (!side_data) { + av_free_packet(pkt); + av_free(pkt); + return AVERROR(ENOMEM); + } + AV_WL32(side_data, 0); + AV_WL32(side_data + 4, av_rescale_q(discard_padding, + (AVRational){1, 1000000000}, + (AVRational){1, st->codec->sample_rate})); + } + if (track->ms_compat) pkt->dts = timecode; else pkt->pts = timecode; pkt->pos = pos; - if (st->codec->codec_id == AV_CODEC_ID_TEXT) - pkt->convergence_duration = duration; - else if (track->type != MATROSKA_TRACK_TYPE_SUBTITLE) - pkt->duration = duration; - - if (st->codec->codec_id == AV_CODEC_ID_SSA) - matroska_fix_ass_packet(matroska, pkt, duration); - - if (matroska->prev_pkt && - timecode != AV_NOPTS_VALUE && - matroska->prev_pkt->pts == timecode && - matroska->prev_pkt->stream_index == st->index && - st->codec->codec_id == AV_CODEC_ID_SSA) - matroska_merge_packets(matroska->prev_pkt, pkt); - else { - dynarray_add(&matroska->packets, &matroska->num_packets, pkt); - matroska->prev_pkt = pkt; + if (st->codec->codec_id == AV_CODEC_ID_SUBRIP) { + /* + * For backward compatibility. + * Historically, we have put subtitle duration + * in convergence_duration, on the off chance + * that the time_scale is less than 1us, which + * could result in a 32bit overflow on the + * normal duration field. + */ + pkt->convergence_duration = lace_duration; } + if (track->type != MATROSKA_TRACK_TYPE_SUBTITLE || + lace_duration <= INT_MAX) { + /* + * For non subtitle tracks, just store the duration + * as normal. + * + * If it's a subtitle track and duration value does + * not overflow a uint32, then also store it normally. + */ + pkt->duration = lace_duration; + } + + dynarray_add(&matroska->packets, &matroska->num_packets, pkt); + matroska->prev_pkt = pkt; + return 0; fail: @@ -2326,7 +2742,8 @@ fail: static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, int size, int64_t pos, uint64_t cluster_time, uint64_t block_duration, int is_keyframe, - int64_t cluster_pos) + uint8_t *additional, uint64_t additional_id, int additional_size, + int64_t cluster_pos, int64_t discard_padding) { uint64_t timecode = AV_NOPTS_VALUE; MatroskaTrack *track; @@ -2335,7 +2752,8 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, int16_t block_time; uint32_t *lace_size = NULL; int n, flags, laces = 0; - uint64_t num, duration; + uint64_t num; + int trust_default_duration = 1; if ((n = matroska_ebmlnum_uint(matroska, data, size, &num)) < 0) { av_log(matroska->ctx, AV_LOG_ERROR, "EBML block data error\n"); @@ -2354,8 +2772,9 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, st = track->stream; if (st->discard >= AVDISCARD_ALL) return res; + av_assert1(block_duration != AV_NOPTS_VALUE); - block_time = AV_RB16(data); + block_time = sign_extend(AV_RB16(data), 16); data += 2; flags = *data++; size -= 3; @@ -2375,9 +2794,14 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, if (matroska->skip_to_keyframe && track->type != MATROSKA_TRACK_TYPE_SUBTITLE) { - if (!is_keyframe || timecode < matroska->skip_to_timecode) + if (timecode < matroska->skip_to_timecode) return res; - matroska->skip_to_keyframe = 0; + if (is_keyframe) + matroska->skip_to_keyframe = 0; + else if (!st->skip_to_keyframe) { + av_log(matroska->ctx, AV_LOG_ERROR, "File is broken, keyframes not correctly marked!\n"); + matroska->skip_to_keyframe = 0; + } } res = matroska_parse_laces(matroska, &data, &size, (flags & 0x06) >> 1, @@ -2386,22 +2810,29 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, if (res) goto end; - if (block_duration != AV_NOPTS_VALUE) { - duration = block_duration / laces; - if (block_duration != duration * laces) { - av_log(matroska->ctx, AV_LOG_WARNING, - "Incorrect block_duration, possibly corrupted container"); + if (track->audio.samplerate == 8000) { + // If this is needed for more codecs, then add them here + if (st->codec->codec_id == AV_CODEC_ID_AC3) { + if (track->audio.samplerate != st->codec->sample_rate || !st->codec->frame_size) + trust_default_duration = 0; } - } else { - duration = track->default_duration / matroska->time_scale; - block_duration = duration * laces; } - if (timecode != AV_NOPTS_VALUE) + if (!block_duration && trust_default_duration) + block_duration = track->default_duration * laces / matroska->time_scale; + + if (cluster_time != (uint64_t)-1 && (block_time >= 0 || cluster_time >= -block_time)) track->end_timecode = FFMAX(track->end_timecode, timecode + block_duration); for (n = 0; n < laces; n++) { + int64_t lace_duration = block_duration*(n+1) / laces - block_duration*n / laces; + + if (lace_size[n] > size) { + av_log(matroska->ctx, AV_LOG_ERROR, "Invalid packet size\n"); + break; + } + if ((st->codec->codec_id == AV_CODEC_ID_RA_288 || st->codec->codec_id == AV_CODEC_ID_COOK || st->codec->codec_id == AV_CODEC_ID_SIPR || @@ -2409,20 +2840,31 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, st->codec->block_align && track->audio.sub_packet_size) { res = matroska_parse_rm_audio(matroska, track, st, data, lace_size[n], - timecode, duration, pos); + timecode, pos); + if (res) + goto end; + + } else if (st->codec->codec_id == AV_CODEC_ID_WEBVTT) { + res = matroska_parse_webvtt(matroska, track, st, + data, lace_size[n], + timecode, lace_duration, + pos); if (res) goto end; } else { res = matroska_parse_frame(matroska, track, st, data, lace_size[n], - timecode, duration, pos, - !n ? is_keyframe : 0); + timecode, lace_duration, pos, + !n ? is_keyframe : 0, + additional, additional_id, additional_size, + discard_padding); if (res) goto end; } if (timecode != AV_NOPTS_VALUE) - timecode = duration ? timecode + duration : AV_NOPTS_VALUE; + timecode = lace_duration ? timecode + lace_duration : AV_NOPTS_VALUE; data += lace_size[n]; + size -= lace_size[n]; } end: @@ -2470,18 +2912,21 @@ static int matroska_parse_cluster_incremental(MatroskaDemuxContext *matroska) i = blocks_list->nb_elem - 1; if (blocks[i].bin.size > 0 && blocks[i].bin.data) { int is_keyframe = blocks[i].non_simple ? !blocks[i].reference : -1; + uint8_t* additional = blocks[i].additional.size > 0 ? + blocks[i].additional.data : NULL; if (!blocks[i].non_simple) - blocks[i].duration = AV_NOPTS_VALUE; + blocks[i].duration = 0; res = matroska_parse_block(matroska, blocks[i].bin.data, blocks[i].bin.size, blocks[i].bin.pos, matroska->current_cluster.timecode, blocks[i].duration, is_keyframe, - matroska->current_cluster_pos); + additional, blocks[i].additional_id, + blocks[i].additional.size, + matroska->current_cluster_pos, + blocks[i].discard_padding); } } - if (res < 0) - matroska->done = 1; return res; } @@ -2502,15 +2947,14 @@ static int matroska_parse_cluster(MatroskaDemuxContext *matroska) res = ebml_parse(matroska, matroska_clusters, &cluster); blocks_list = &cluster.blocks; blocks = blocks_list->elem; - for (i = 0; i < blocks_list->nb_elem && !res; i++) + for (i = 0; i < blocks_list->nb_elem; 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, blocks[i].duration, - is_keyframe, pos); + is_keyframe, NULL, 0, 0, pos, + blocks[i].discard_padding); } ebml_free(matroska_cluster, &cluster); return res; @@ -2519,22 +2963,16 @@ static int matroska_parse_cluster(MatroskaDemuxContext *matroska) static int matroska_read_packet(AVFormatContext *s, AVPacket *pkt) { MatroskaDemuxContext *matroska = s->priv_data; - int ret = 0; - while (!ret && matroska_deliver_packet(matroska, pkt)) { + while (matroska_deliver_packet(matroska, pkt)) { int64_t pos = avio_tell(matroska->ctx->pb); if (matroska->done) return AVERROR_EOF; if (matroska_parse_cluster(matroska) < 0) - ret = matroska_resync(matroska, pos); + matroska_resync(matroska, pos); } - if (ret == AVERROR_INVALIDDATA && pkt->data) { - pkt->flags |= AV_PKT_FLAG_CORRUPT; - return 0; - } - - return ret; + return 0; } static int matroska_read_seek(AVFormatContext *s, int stream_index, @@ -2546,20 +2984,20 @@ static int matroska_read_seek(AVFormatContext *s, int stream_index, int i, index, index_sub, index_min; /* Parse the CUES now since we need the index data to seek. */ - if (matroska->cues_parsing_deferred) { - matroska_parse_cues(matroska); + if (matroska->cues_parsing_deferred > 0) { matroska->cues_parsing_deferred = 0; + matroska_parse_cues(matroska); } if (!st->nb_index_entries) - return 0; + goto err; timestamp = FFMAX(timestamp, st->index_entries[0].timestamp); - if ((index = av_index_search_timestamp(st, timestamp, flags)) < 0) { + if ((index = av_index_search_timestamp(st, timestamp, flags)) < 0 || index == st->nb_index_entries - 1) { 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) { + while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0 || index == st->nb_index_entries - 1) { matroska_clear_queue(matroska); if (matroska_parse_cluster(matroska) < 0) break; @@ -2567,8 +3005,8 @@ static int matroska_read_seek(AVFormatContext *s, int stream_index, } matroska_clear_queue(matroska); - if (index < 0) - return 0; + if (index < 0 || (matroska->cues_parsing_deferred < 0 && index == st->nb_index_entries - 1)) + goto err; index_min = index; tracks = matroska->tracks.elem; @@ -2582,21 +3020,38 @@ static int matroska_read_seek(AVFormatContext *s, int stream_index, index_sub = av_index_search_timestamp( tracks[i].stream, st->index_entries[index].timestamp, AVSEEK_FLAG_BACKWARD); - if (index_sub >= 0 && - st->index_entries[index_sub].pos < st->index_entries[index_min].pos && - st->index_entries[index].timestamp - - st->index_entries[index_sub].timestamp < 30000000000 / matroska->time_scale) - index_min = index_sub; + while (index_sub >= 0 && + index_min > 0 && + tracks[i].stream->index_entries[index_sub].pos < st->index_entries[index_min].pos && + st->index_entries[index].timestamp - tracks[i].stream->index_entries[index_sub].timestamp < 30000000000 / matroska->time_scale) + index_min--; } } 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; + if (flags & AVSEEK_FLAG_ANY) { + st->skip_to_keyframe = 0; + matroska->skip_to_timecode = timestamp; + } else { + st->skip_to_keyframe = 1; + matroska->skip_to_timecode = st->index_entries[index].timestamp; + } + matroska->skip_to_keyframe = 1; matroska->done = 0; + matroska->num_levels = 0; ff_update_cur_dts(s, st, st->index_entries[index].timestamp); return 0; +err: + // slightly hackish but allows proper fallback to + // the generic seeking code. + matroska_clear_queue(matroska); + matroska->current_id = 0; + st->skip_to_keyframe = + matroska->skip_to_keyframe = 0; + matroska->done = 0; + matroska->num_levels = 0; + return -1; } static int matroska_read_close(AVFormatContext *s) @@ -2609,13 +3064,362 @@ static int matroska_read_close(AVFormatContext *s) for (n = 0; n < matroska->tracks.nb_elem; n++) if (tracks[n].type == MATROSKA_TRACK_TYPE_AUDIO) - av_free(tracks[n].audio.buf); + av_freep(&tracks[n].audio.buf); ebml_free(matroska_cluster, &matroska->current_cluster); ebml_free(matroska_segment, matroska); return 0; } +typedef struct { + int64_t start_time_ns; + int64_t end_time_ns; + int64_t start_offset; + int64_t end_offset; +} CueDesc; + +/* This function searches all the Cues and returns the CueDesc corresponding the + * the timestamp ts. Returned CueDesc will be such that start_time_ns <= ts < + * end_time_ns. All 4 fields will be set to -1 if ts >= file's duration. + */ +static CueDesc get_cue_desc(AVFormatContext *s, int64_t ts, int64_t cues_start) { + MatroskaDemuxContext *matroska = s->priv_data; + CueDesc cue_desc; + int i; + int nb_index_entries = s->streams[0]->nb_index_entries; + AVIndexEntry *index_entries = s->streams[0]->index_entries; + if (ts >= matroska->duration * matroska->time_scale) return (CueDesc) {-1, -1, -1, -1}; + for (i = 1; i < nb_index_entries; i++) { + if (index_entries[i - 1].timestamp * matroska->time_scale <= ts && + index_entries[i].timestamp * matroska->time_scale > ts) { + break; + } + } + --i; + cue_desc.start_time_ns = index_entries[i].timestamp * matroska->time_scale; + cue_desc.start_offset = index_entries[i].pos - matroska->segment_start; + if (i != nb_index_entries - 1) { + cue_desc.end_time_ns = index_entries[i + 1].timestamp * matroska->time_scale; + cue_desc.end_offset = index_entries[i + 1].pos - matroska->segment_start; + } else { + cue_desc.end_time_ns = matroska->duration * matroska->time_scale; + // FIXME: this needs special handling for files where Cues appear + // before Clusters. the current logic assumes Cues appear after + // Clusters. + cue_desc.end_offset = cues_start - matroska->segment_start; + } + return cue_desc; +} + +static int webm_clusters_start_with_keyframe(AVFormatContext *s) +{ + MatroskaDemuxContext *matroska = s->priv_data; + int64_t cluster_pos, before_pos; + int index, rv = 1; + if (s->streams[0]->nb_index_entries <= 0) return 0; + // seek to the first cluster using cues. + index = av_index_search_timestamp(s->streams[0], 0, 0); + if (index < 0) return 0; + cluster_pos = s->streams[0]->index_entries[index].pos; + before_pos = avio_tell(s->pb); + while (1) { + int64_t cluster_id = 0, cluster_length = 0; + AVPacket *pkt; + avio_seek(s->pb, cluster_pos, SEEK_SET); + // read cluster id and length + ebml_read_num(matroska, matroska->ctx->pb, 4, &cluster_id); + ebml_read_length(matroska, matroska->ctx->pb, &cluster_length); + if (cluster_id != 0xF43B675) { // done with all clusters + break; + } + avio_seek(s->pb, cluster_pos, SEEK_SET); + matroska->current_id = 0; + matroska_clear_queue(matroska); + if (matroska_parse_cluster(matroska) < 0 || + matroska->num_packets <= 0) { + break; + } + pkt = matroska->packets[0]; + cluster_pos += cluster_length + 12; // 12 is the offset of the cluster id and length. + if (!(pkt->flags & AV_PKT_FLAG_KEY)) { + rv = 0; + break; + } + } + avio_seek(s->pb, before_pos, SEEK_SET); + return rv; +} + +static int buffer_size_after_time_downloaded(int64_t time_ns, double search_sec, int64_t bps, + double min_buffer, double* buffer, + double* sec_to_download, AVFormatContext *s, + int64_t cues_start) +{ + double nano_seconds_per_second = 1000000000.0; + double time_sec = time_ns / nano_seconds_per_second; + int rv = 0; + int64_t time_to_search_ns = (int64_t)(search_sec * nano_seconds_per_second); + int64_t end_time_ns = time_ns + time_to_search_ns; + double sec_downloaded = 0.0; + CueDesc desc_curr = get_cue_desc(s, time_ns, cues_start); + if (desc_curr.start_time_ns == -1) + return -1; + *sec_to_download = 0.0; + + // Check for non cue start time. + if (time_ns > desc_curr.start_time_ns) { + int64_t cue_nano = desc_curr.end_time_ns - time_ns; + double percent = (double)(cue_nano) / (desc_curr.end_time_ns - desc_curr.start_time_ns); + double cueBytes = (desc_curr.end_offset - desc_curr.start_offset) * percent; + double timeToDownload = (cueBytes * 8.0) / bps; + + sec_downloaded += (cue_nano / nano_seconds_per_second) - timeToDownload; + *sec_to_download += timeToDownload; + + // Check if the search ends within the first cue. + if (desc_curr.end_time_ns >= end_time_ns) { + double desc_end_time_sec = desc_curr.end_time_ns / nano_seconds_per_second; + double percent_to_sub = search_sec / (desc_end_time_sec - time_sec); + sec_downloaded = percent_to_sub * sec_downloaded; + *sec_to_download = percent_to_sub * *sec_to_download; + } + + if ((sec_downloaded + *buffer) <= min_buffer) { + return 1; + } + + // Get the next Cue. + desc_curr = get_cue_desc(s, desc_curr.end_time_ns, cues_start); + } + + while (desc_curr.start_time_ns != -1) { + int64_t desc_bytes = desc_curr.end_offset - desc_curr.start_offset; + int64_t desc_ns = desc_curr.end_time_ns - desc_curr.start_time_ns; + double desc_sec = desc_ns / nano_seconds_per_second; + double bits = (desc_bytes * 8.0); + double time_to_download = bits / bps; + + sec_downloaded += desc_sec - time_to_download; + *sec_to_download += time_to_download; + + if (desc_curr.end_time_ns >= end_time_ns) { + double desc_end_time_sec = desc_curr.end_time_ns / nano_seconds_per_second; + double percent_to_sub = search_sec / (desc_end_time_sec - time_sec); + sec_downloaded = percent_to_sub * sec_downloaded; + *sec_to_download = percent_to_sub * *sec_to_download; + + if ((sec_downloaded + *buffer) <= min_buffer) + rv = 1; + break; + } + + if ((sec_downloaded + *buffer) <= min_buffer) { + rv = 1; + break; + } + + desc_curr = get_cue_desc(s, desc_curr.end_time_ns, cues_start); + } + *buffer = *buffer + sec_downloaded; + return rv; +} + +/* This function computes the bandwidth of the WebM file with the help of + * buffer_size_after_time_downloaded() function. Both of these functions are + * adapted from WebM Tools project and are adapted to work with FFmpeg's + * Matroska parsing mechanism. + * + * Returns the bandwidth of the file on success; -1 on error. + * */ +static int64_t webm_dash_manifest_compute_bandwidth(AVFormatContext *s, int64_t cues_start) +{ + MatroskaDemuxContext *matroska = s->priv_data; + AVStream *st = s->streams[0]; + double bandwidth = 0.0; + int i; + + for (i = 0; i < st->nb_index_entries; i++) { + int64_t prebuffer_ns = 1000000000; + int64_t time_ns = st->index_entries[i].timestamp * matroska->time_scale; + double nano_seconds_per_second = 1000000000.0; + int64_t prebuffered_ns = time_ns + prebuffer_ns; + double prebuffer_bytes = 0.0; + int64_t temp_prebuffer_ns = prebuffer_ns; + int64_t pre_bytes, pre_ns; + double pre_sec, prebuffer, bits_per_second; + CueDesc desc_beg = get_cue_desc(s, time_ns, cues_start); + + // Start with the first Cue. + CueDesc desc_end = desc_beg; + + // Figure out how much data we have downloaded for the prebuffer. This will + // be used later to adjust the bits per sample to try. + while (desc_end.start_time_ns != -1 && desc_end.end_time_ns < prebuffered_ns) { + // Prebuffered the entire Cue. + prebuffer_bytes += desc_end.end_offset - desc_end.start_offset; + temp_prebuffer_ns -= desc_end.end_time_ns - desc_end.start_time_ns; + desc_end = get_cue_desc(s, desc_end.end_time_ns, cues_start); + } + if (desc_end.start_time_ns == -1) { + // The prebuffer is larger than the duration. + if (matroska->duration * matroska->time_scale >= prebuffered_ns) + return -1; + bits_per_second = 0.0; + } else { + // The prebuffer ends in the last Cue. Estimate how much data was + // prebuffered. + pre_bytes = desc_end.end_offset - desc_end.start_offset; + pre_ns = desc_end.end_time_ns - desc_end.start_time_ns; + pre_sec = pre_ns / nano_seconds_per_second; + prebuffer_bytes += + pre_bytes * ((temp_prebuffer_ns / nano_seconds_per_second) / pre_sec); + + prebuffer = prebuffer_ns / nano_seconds_per_second; + + // Set this to 0.0 in case our prebuffer buffers the entire video. + bits_per_second = 0.0; + do { + int64_t desc_bytes = desc_end.end_offset - desc_beg.start_offset; + int64_t desc_ns = desc_end.end_time_ns - desc_beg.start_time_ns; + double desc_sec = desc_ns / nano_seconds_per_second; + double calc_bits_per_second = (desc_bytes * 8) / desc_sec; + + // Drop the bps by the percentage of bytes buffered. + double percent = (desc_bytes - prebuffer_bytes) / desc_bytes; + double mod_bits_per_second = calc_bits_per_second * percent; + + if (prebuffer < desc_sec) { + double search_sec = + (double)(matroska->duration * matroska->time_scale) / nano_seconds_per_second; + + // Add 1 so the bits per second should be a little bit greater than file + // datarate. + int64_t bps = (int64_t)(mod_bits_per_second) + 1; + const double min_buffer = 0.0; + double buffer = prebuffer; + double sec_to_download = 0.0; + + int rv = buffer_size_after_time_downloaded(prebuffered_ns, search_sec, bps, + min_buffer, &buffer, &sec_to_download, + s, cues_start); + if (rv < 0) { + return -1; + } else if (rv == 0) { + bits_per_second = (double)(bps); + break; + } + } + + desc_end = get_cue_desc(s, desc_end.end_time_ns, cues_start); + } while (desc_end.start_time_ns != -1); + } + if (bandwidth < bits_per_second) bandwidth = bits_per_second; + } + return (int64_t)bandwidth; +} + +static int webm_dash_manifest_cues(AVFormatContext *s) +{ + MatroskaDemuxContext *matroska = s->priv_data; + EbmlList *seekhead_list = &matroska->seekhead; + MatroskaSeekhead *seekhead = seekhead_list->elem; + char *buf; + int64_t cues_start = -1, cues_end = -1, before_pos, bandwidth; + int i; + + // determine cues start and end positions + for (i = 0; i < seekhead_list->nb_elem; i++) + if (seekhead[i].id == MATROSKA_ID_CUES) + break; + + if (i >= seekhead_list->nb_elem) return -1; + + before_pos = avio_tell(matroska->ctx->pb); + cues_start = seekhead[i].pos + matroska->segment_start; + if (avio_seek(matroska->ctx->pb, cues_start, SEEK_SET) == cues_start) { + // cues_end is computed as cues_start + cues_length + length of the + // Cues element ID + EBML length of the Cues element. cues_end is + // inclusive and the above sum is reduced by 1. + uint64_t cues_length = 0, cues_id = 0, bytes_read = 0; + bytes_read += ebml_read_num(matroska, matroska->ctx->pb, 4, &cues_id); + bytes_read += ebml_read_length(matroska, matroska->ctx->pb, &cues_length); + cues_end = cues_start + cues_length + bytes_read - 1; + } + avio_seek(matroska->ctx->pb, before_pos, SEEK_SET); + if (cues_start == -1 || cues_end == -1) return -1; + + // parse the cues + matroska_parse_cues(matroska); + + // cues start + av_dict_set_int(&s->streams[0]->metadata, CUES_START, cues_start, 0); + + // cues end + av_dict_set_int(&s->streams[0]->metadata, CUES_END, cues_end, 0); + + // bandwidth + bandwidth = webm_dash_manifest_compute_bandwidth(s, cues_start); + if (bandwidth < 0) return -1; + av_dict_set_int(&s->streams[0]->metadata, BANDWIDTH, bandwidth, 0); + + // check if all clusters start with key frames + av_dict_set_int(&s->streams[0]->metadata, CLUSTER_KEYFRAME, webm_clusters_start_with_keyframe(s), 0); + + // store cue point timestamps as a comma separated list for checking subsegment alignment in + // the muxer. assumes that each timestamp cannot be more than 20 characters long. + buf = av_malloc_array(s->streams[0]->nb_index_entries, 20 * sizeof(char)); + if (!buf) return -1; + strcpy(buf, ""); + for (i = 0; i < s->streams[0]->nb_index_entries; i++) { + snprintf(buf, (i + 1) * 20 * sizeof(char), + "%s%" PRId64, buf, s->streams[0]->index_entries[i].timestamp); + if (i != s->streams[0]->nb_index_entries - 1) + strncat(buf, ",", sizeof(char)); + } + av_dict_set(&s->streams[0]->metadata, CUE_TIMESTAMPS, buf, 0); + av_free(buf); + + return 0; +} + +static int webm_dash_manifest_read_header(AVFormatContext *s) +{ + char *buf; + int ret = matroska_read_header(s); + MatroskaTrack *tracks; + MatroskaDemuxContext *matroska = s->priv_data; + if (ret) { + av_log(s, AV_LOG_ERROR, "Failed to read file headers\n"); + return -1; + } + + // initialization range + // 5 is the offset of Cluster ID. + av_dict_set_int(&s->streams[0]->metadata, INITIALIZATION_RANGE, avio_tell(s->pb) - 5, 0); + + // basename of the file + buf = strrchr(s->filename, '/'); + av_dict_set(&s->streams[0]->metadata, FILENAME, buf ? ++buf : s->filename, 0); + + // duration + buf = av_asprintf("%g", matroska->duration); + if (!buf) return AVERROR(ENOMEM); + av_dict_set(&s->streams[0]->metadata, DURATION, buf, 0); + av_free(buf); + + // track number + tracks = matroska->tracks.elem; + av_dict_set_int(&s->streams[0]->metadata, TRACK_NUMBER, tracks[0].num, 0); + + // parse the cues and populate Cue related fields + return webm_dash_manifest_cues(s); +} + +static int webm_dash_manifest_read_packet(AVFormatContext *s, AVPacket *pkt) +{ + return AVERROR_EOF; +} + AVInputFormat ff_matroska_demuxer = { .name = "matroska,webm", .long_name = NULL_IF_CONFIG_SMALL("Matroska / WebM"), @@ -2628,3 +3432,12 @@ AVInputFormat ff_matroska_demuxer = { .read_seek = matroska_read_seek, .mime_type = "audio/webm,audio/x-matroska,video/webm,video/x-matroska" }; + +AVInputFormat ff_webm_dash_manifest_demuxer = { + .name = "webm_dash_manifest", + .long_name = NULL_IF_CONFIG_SMALL("WebM DASH Manifest"), + .priv_data_size = sizeof(MatroskaDemuxContext), + .read_header = webm_dash_manifest_read_header, + .read_packet = webm_dash_manifest_read_packet, + .read_close = matroska_read_close, +}; |