diff options
Diffstat (limited to 'ffmpeg1/libavformat/matroskaenc.c')
| -rw-r--r-- | ffmpeg1/libavformat/matroskaenc.c | 1461 |
1 files changed, 0 insertions, 1461 deletions
diff --git a/ffmpeg1/libavformat/matroskaenc.c b/ffmpeg1/libavformat/matroskaenc.c deleted file mode 100644 index a151eef..0000000 --- a/ffmpeg1/libavformat/matroskaenc.c +++ /dev/null @@ -1,1461 +0,0 @@ -/* - * Matroska muxer - * Copyright (c) 2007 David Conrad - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * 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 FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "avformat.h" -#include "internal.h" -#include "riff.h" -#include "isom.h" -#include "matroska.h" -#include "avc.h" -#include "flacenc.h" -#include "avlanguage.h" -#include "libavutil/samplefmt.h" -#include "libavutil/sha.h" -#include "libavutil/intreadwrite.h" -#include "libavutil/intfloat.h" -#include "libavutil/mathematics.h" -#include "libavutil/random_seed.h" -#include "libavutil/lfg.h" -#include "libavutil/dict.h" -#include "libavutil/avstring.h" -#include "libavcodec/xiph.h" -#include "libavcodec/mpeg4audio.h" - -typedef struct ebml_master { - int64_t pos; ///< absolute offset in the file where the master's elements start - int sizebytes; ///< how many bytes were reserved for the size -} ebml_master; - -typedef struct mkv_seekhead_entry { - unsigned int elementid; - uint64_t segmentpos; -} mkv_seekhead_entry; - -typedef struct mkv_seekhead { - int64_t filepos; - int64_t segment_offset; ///< the file offset to the beginning of the segment - int reserved_size; ///< -1 if appending to file - int max_entries; - mkv_seekhead_entry *entries; - int num_entries; -} mkv_seekhead; - -typedef struct { - uint64_t pts; - int tracknum; - int64_t cluster_pos; ///< file offset of the cluster containing the block -} mkv_cuepoint; - -typedef struct { - int64_t segment_offset; - mkv_cuepoint *entries; - int num_entries; -} mkv_cues; - -typedef struct { - int write_dts; - int has_cue; -} mkv_track; - -#define MODE_MATROSKAv2 0x01 -#define MODE_WEBM 0x02 - -typedef struct MatroskaMuxContext { - int mode; - AVIOContext *dyn_bc; - ebml_master segment; - int64_t segment_offset; - ebml_master cluster; - int64_t cluster_pos; ///< file offset of the current cluster - int64_t cluster_pts; - int64_t duration_offset; - int64_t duration; - mkv_seekhead *main_seekhead; - mkv_cues *cues; - mkv_track *tracks; - - AVPacket cur_audio_pkt; - - int have_attachments; -} MatroskaMuxContext; - - -/** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit - * offset, 4 bytes for target EBML ID */ -#define MAX_SEEKENTRY_SIZE 21 - -/** per-cuepoint-track - 3 1-byte EBML IDs, 3 1-byte EBML sizes, 2 - * 8-byte uint max */ -#define MAX_CUETRACKPOS_SIZE 22 - -/** per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max */ -#define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE*num_tracks - - -static int ebml_id_size(unsigned int id) -{ - return (av_log2(id+1)-1)/7+1; -} - -static void put_ebml_id(AVIOContext *pb, unsigned int id) -{ - int i = ebml_id_size(id); - while (i--) - avio_w8(pb, (uint8_t)(id >> (i*8))); -} - -/** - * Write an EBML size meaning "unknown size". - * - * @param bytes The number of bytes the size should occupy (maximum: 8). - */ -static void put_ebml_size_unknown(AVIOContext *pb, int bytes) -{ - av_assert0(bytes <= 8); - avio_w8(pb, 0x1ff >> bytes); - while (--bytes) - avio_w8(pb, 0xff); -} - -/** - * Calculate how many bytes are needed to represent a given number in EBML. - */ -static int ebml_num_size(uint64_t num) -{ - int bytes = 1; - while ((num+1) >> bytes*7) bytes++; - return bytes; -} - -/** - * Write a number in EBML variable length format. - * - * @param bytes The number of bytes that need to be used to write the number. - * If zero, any number of bytes can be used. - */ -static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes) -{ - int i, needed_bytes = ebml_num_size(num); - - // sizes larger than this are currently undefined in EBML - av_assert0(num < (1ULL<<56)-1); - - if (bytes == 0) - // don't care how many bytes are used, so use the min - bytes = needed_bytes; - // the bytes needed to write the given size would exceed the bytes - // that we need to use, so write unknown size. This shouldn't happen. - av_assert0(bytes >= needed_bytes); - - num |= 1ULL << bytes*7; - for (i = bytes - 1; i >= 0; i--) - avio_w8(pb, (uint8_t)(num >> i*8)); -} - -static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val) -{ - int i, bytes = 1; - uint64_t tmp = val; - while (tmp>>=8) bytes++; - - put_ebml_id(pb, elementid); - put_ebml_num(pb, bytes, 0); - for (i = bytes - 1; i >= 0; i--) - avio_w8(pb, (uint8_t)(val >> i*8)); -} - -static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val) -{ - put_ebml_id(pb, elementid); - put_ebml_num(pb, 8, 0); - avio_wb64(pb, av_double2int(val)); -} - -static void put_ebml_binary(AVIOContext *pb, unsigned int elementid, - const void *buf, int size) -{ - put_ebml_id(pb, elementid); - put_ebml_num(pb, size, 0); - avio_write(pb, buf, size); -} - -static void put_ebml_string(AVIOContext *pb, unsigned int elementid, const char *str) -{ - put_ebml_binary(pb, elementid, str, strlen(str)); -} - -/** - * Write a void element of a given size. Useful for reserving space in - * the file to be written to later. - * - * @param size The number of bytes to reserve, which must be at least 2. - */ -static void put_ebml_void(AVIOContext *pb, uint64_t size) -{ - int64_t currentpos = avio_tell(pb); - - av_assert0(size >= 2); - - put_ebml_id(pb, EBML_ID_VOID); - // we need to subtract the length needed to store the size from the - // size we need to reserve so 2 cases, we use 8 bytes to store the - // size if possible, 1 byte otherwise - if (size < 10) - put_ebml_num(pb, size-1, 0); - else - put_ebml_num(pb, size-9, 8); - while(avio_tell(pb) < currentpos + size) - avio_w8(pb, 0); -} - -static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid, uint64_t expectedsize) -{ - int bytes = expectedsize ? ebml_num_size(expectedsize) : 8; - put_ebml_id(pb, elementid); - put_ebml_size_unknown(pb, bytes); - return (ebml_master){ avio_tell(pb), bytes }; -} - -static void end_ebml_master(AVIOContext *pb, ebml_master master) -{ - int64_t pos = avio_tell(pb); - - if (avio_seek(pb, master.pos - master.sizebytes, SEEK_SET) < 0) - return; - put_ebml_num(pb, pos - master.pos, master.sizebytes); - avio_seek(pb, pos, SEEK_SET); -} - -static void put_xiph_size(AVIOContext *pb, int size) -{ - int i; - for (i = 0; i < size / 255; i++) - avio_w8(pb, 255); - avio_w8(pb, size % 255); -} - -/** - * Initialize a mkv_seekhead element to be ready to index level 1 Matroska - * elements. If a maximum number of elements is specified, enough space - * will be reserved at the current file location to write a seek head of - * that size. - * - * @param segment_offset The absolute offset to the position in the file - * where the segment begins. - * @param numelements The maximum number of elements that will be indexed - * by this seek head, 0 if unlimited. - */ -static mkv_seekhead * mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset, int numelements) -{ - mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead)); - if (new_seekhead == NULL) - return NULL; - - new_seekhead->segment_offset = segment_offset; - - if (numelements > 0) { - new_seekhead->filepos = avio_tell(pb); - // 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID - // and size, and 3 bytes to guarantee that an EBML void element - // will fit afterwards - new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 13; - new_seekhead->max_entries = numelements; - put_ebml_void(pb, new_seekhead->reserved_size); - } - return new_seekhead; -} - -static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos) -{ - mkv_seekhead_entry *entries = seekhead->entries; - - // don't store more elements than we reserved space for - if (seekhead->max_entries > 0 && seekhead->max_entries <= seekhead->num_entries) - return -1; - - entries = av_realloc(entries, (seekhead->num_entries + 1) * sizeof(mkv_seekhead_entry)); - if (entries == NULL) - return AVERROR(ENOMEM); - - entries[seekhead->num_entries ].elementid = elementid; - entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset; - - seekhead->entries = entries; - return 0; -} - -/** - * Write the seek head to the file and free it. If a maximum number of - * elements was specified to mkv_start_seekhead(), the seek head will - * be written at the location reserved for it. Otherwise, it is written - * at the current location in the file. - * - * @return The file offset where the seekhead was written, - * -1 if an error occurred. - */ -static int64_t mkv_write_seekhead(AVIOContext *pb, mkv_seekhead *seekhead) -{ - ebml_master metaseek, seekentry; - int64_t currentpos; - int i; - - currentpos = avio_tell(pb); - - if (seekhead->reserved_size > 0) { - if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0) { - currentpos = -1; - goto fail; - } - } - - metaseek = start_ebml_master(pb, MATROSKA_ID_SEEKHEAD, seekhead->reserved_size); - for (i = 0; i < seekhead->num_entries; i++) { - mkv_seekhead_entry *entry = &seekhead->entries[i]; - - seekentry = start_ebml_master(pb, MATROSKA_ID_SEEKENTRY, MAX_SEEKENTRY_SIZE); - - put_ebml_id(pb, MATROSKA_ID_SEEKID); - put_ebml_num(pb, ebml_id_size(entry->elementid), 0); - put_ebml_id(pb, entry->elementid); - - put_ebml_uint(pb, MATROSKA_ID_SEEKPOSITION, entry->segmentpos); - end_ebml_master(pb, seekentry); - } - end_ebml_master(pb, metaseek); - - if (seekhead->reserved_size > 0) { - uint64_t remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb); - put_ebml_void(pb, remaining); - avio_seek(pb, currentpos, SEEK_SET); - - currentpos = seekhead->filepos; - } -fail: - av_free(seekhead->entries); - av_free(seekhead); - - return currentpos; -} - -static mkv_cues * mkv_start_cues(int64_t segment_offset) -{ - mkv_cues *cues = av_mallocz(sizeof(mkv_cues)); - if (cues == NULL) - return NULL; - - cues->segment_offset = segment_offset; - return cues; -} - -static int mkv_add_cuepoint(mkv_cues *cues, int stream, int64_t ts, int64_t cluster_pos) -{ - mkv_cuepoint *entries = cues->entries; - - if (ts < 0) - return 0; - - entries = av_realloc(entries, (cues->num_entries + 1) * sizeof(mkv_cuepoint)); - if (entries == NULL) - return AVERROR(ENOMEM); - - entries[cues->num_entries ].pts = ts; - entries[cues->num_entries ].tracknum = stream + 1; - entries[cues->num_entries++].cluster_pos = cluster_pos - cues->segment_offset; - - cues->entries = entries; - return 0; -} - -static int64_t mkv_write_cues(AVIOContext *pb, mkv_cues *cues, mkv_track *tracks, int num_tracks) -{ - ebml_master cues_element; - int64_t currentpos; - int i, j; - - currentpos = avio_tell(pb); - cues_element = start_ebml_master(pb, MATROSKA_ID_CUES, 0); - - for (i = 0; i < cues->num_entries; i++) { - ebml_master cuepoint, track_positions; - mkv_cuepoint *entry = &cues->entries[i]; - uint64_t pts = entry->pts; - - cuepoint = start_ebml_master(pb, MATROSKA_ID_POINTENTRY, MAX_CUEPOINT_SIZE(num_tracks)); - put_ebml_uint(pb, MATROSKA_ID_CUETIME, pts); - - // put all the entries from different tracks that have the exact same - // timestamp into the same CuePoint - for (j = 0; j < num_tracks; j++) - tracks[j].has_cue = 0; - for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) { - int tracknum = entry[j].tracknum - 1; - av_assert0(tracknum>=0 && tracknum<num_tracks); - if (tracks[tracknum].has_cue) - continue; - tracks[tracknum].has_cue = 1; - track_positions = start_ebml_master(pb, MATROSKA_ID_CUETRACKPOSITION, MAX_CUETRACKPOS_SIZE); - put_ebml_uint(pb, MATROSKA_ID_CUETRACK , entry[j].tracknum ); - put_ebml_uint(pb, MATROSKA_ID_CUECLUSTERPOSITION, entry[j].cluster_pos); - end_ebml_master(pb, track_positions); - } - i += j - 1; - end_ebml_master(pb, cuepoint); - } - end_ebml_master(pb, cues_element); - - return currentpos; -} - -static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec) -{ - uint8_t *header_start[3]; - int header_len[3]; - int first_header_size; - int j; - - if (codec->codec_id == AV_CODEC_ID_VORBIS) - first_header_size = 30; - else - first_header_size = 42; - - if (avpriv_split_xiph_headers(codec->extradata, codec->extradata_size, - first_header_size, header_start, header_len) < 0) { - av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n"); - return -1; - } - - avio_w8(pb, 2); // number packets - 1 - for (j = 0; j < 2; j++) { - put_xiph_size(pb, header_len[j]); - } - for (j = 0; j < 3; j++) - avio_write(pb, header_start[j], header_len[j]); - - return 0; -} - -static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, int *sample_rate, int *output_sample_rate) -{ - MPEG4AudioConfig mp4ac; - - if (avpriv_mpeg4audio_get_config(&mp4ac, codec->extradata, - codec->extradata_size * 8, 1) < 0) { - av_log(s, AV_LOG_WARNING, "Error parsing AAC extradata, unable to determine samplerate.\n"); - return; - } - - *sample_rate = mp4ac.sample_rate; - *output_sample_rate = mp4ac.ext_sample_rate; -} - -static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec, int native_id, int qt_id) -{ - AVIOContext *dyn_cp; - uint8_t *codecpriv; - int ret, codecpriv_size; - - ret = avio_open_dyn_buf(&dyn_cp); - if(ret < 0) - return ret; - - if (native_id) { - if (codec->codec_id == AV_CODEC_ID_VORBIS || codec->codec_id == AV_CODEC_ID_THEORA) - ret = put_xiph_codecpriv(s, dyn_cp, codec); - else if (codec->codec_id == AV_CODEC_ID_FLAC) - ret = ff_flac_write_header(dyn_cp, codec, 1); - else if (codec->codec_id == AV_CODEC_ID_H264) - ret = ff_isom_write_avcc(dyn_cp, codec->extradata, codec->extradata_size); - else if (codec->codec_id == AV_CODEC_ID_ALAC) { - if (codec->extradata_size < 36) { - av_log(s, AV_LOG_ERROR, - "Invalid extradata found, ALAC expects a 36-byte " - "QuickTime atom."); - ret = AVERROR_INVALIDDATA; - } else - avio_write(dyn_cp, codec->extradata + 12, - codec->extradata_size - 12); - } - else if (codec->extradata_size && codec->codec_id != AV_CODEC_ID_TTA) - avio_write(dyn_cp, codec->extradata, codec->extradata_size); - } else if (codec->codec_type == AVMEDIA_TYPE_VIDEO) { - if (qt_id) { - if (!codec->codec_tag) - codec->codec_tag = ff_codec_get_tag(ff_codec_movvideo_tags, codec->codec_id); - if (codec->extradata_size) - avio_write(dyn_cp, codec->extradata, codec->extradata_size); - } else { - if (!codec->codec_tag) - codec->codec_tag = ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id); - if (!codec->codec_tag) { - av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n", - avcodec_get_name(codec->codec_id)); - ret = AVERROR(EINVAL); - } - - ff_put_bmp_header(dyn_cp, codec, ff_codec_bmp_tags, 0); - } - - } else if (codec->codec_type == AVMEDIA_TYPE_AUDIO) { - unsigned int tag; - tag = ff_codec_get_tag(ff_codec_wav_tags, codec->codec_id); - if (!tag) { - av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n", - avcodec_get_name(codec->codec_id)); - ret = AVERROR(EINVAL); - } - if (!codec->codec_tag) - codec->codec_tag = tag; - - ff_put_wav_header(dyn_cp, codec); - } - - codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv); - if (codecpriv_size) - put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codecpriv, codecpriv_size); - av_free(codecpriv); - return ret; -} - -static int mkv_write_tracks(AVFormatContext *s) -{ - MatroskaMuxContext *mkv = s->priv_data; - AVIOContext *pb = s->pb; - ebml_master tracks; - int i, j, ret, default_stream_exists = 0; - - ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TRACKS, avio_tell(pb)); - if (ret < 0) return ret; - - tracks = start_ebml_master(pb, MATROSKA_ID_TRACKS, 0); - for (i = 0; i < s->nb_streams; i++) { - AVStream *st = s->streams[i]; - default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT; - } - for (i = 0; i < s->nb_streams; i++) { - AVStream *st = s->streams[i]; - AVCodecContext *codec = st->codec; - ebml_master subinfo, track; - int native_id = 0; - int qt_id = 0; - int bit_depth = av_get_bits_per_sample(codec->codec_id); - int sample_rate = codec->sample_rate; - int output_sample_rate = 0; - AVDictionaryEntry *tag; - - if (codec->codec_type == AVMEDIA_TYPE_ATTACHMENT) { - mkv->have_attachments = 1; - continue; - } - - if (!bit_depth) - bit_depth = av_get_bytes_per_sample(codec->sample_fmt) << 3; - if (!bit_depth) - bit_depth = codec->bits_per_coded_sample; - - if (codec->codec_id == AV_CODEC_ID_AAC) - get_aac_sample_rates(s, codec, &sample_rate, &output_sample_rate); - - track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0); - put_ebml_uint (pb, MATROSKA_ID_TRACKNUMBER , i + 1); - put_ebml_uint (pb, MATROSKA_ID_TRACKUID , i + 1); - put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet) - - if ((tag = av_dict_get(st->metadata, "title", NULL, 0))) - put_ebml_string(pb, MATROSKA_ID_TRACKNAME, tag->value); - tag = av_dict_get(st->metadata, "language", NULL, 0); - put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag ? tag->value:"und"); - - if (default_stream_exists) { - put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGDEFAULT, !!(st->disposition & AV_DISPOSITION_DEFAULT)); - } - if (st->disposition & AV_DISPOSITION_FORCED) - put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGFORCED, 1); - - // look for a codec ID string specific to mkv to use, - // if none are found, use AVI codes - for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) { - if (ff_mkv_codec_tags[j].id == codec->codec_id) { - put_ebml_string(pb, MATROSKA_ID_CODECID, ff_mkv_codec_tags[j].str); - native_id = 1; - break; - } - } - - if (mkv->mode == MODE_WEBM && !(codec->codec_id == AV_CODEC_ID_VP8 || - codec->codec_id == AV_CODEC_ID_VORBIS)) { - av_log(s, AV_LOG_ERROR, - "Only VP8 video and Vorbis audio are supported for WebM.\n"); - return AVERROR(EINVAL); - } - - switch (codec->codec_type) { - case AVMEDIA_TYPE_VIDEO: - put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO); - if(st->avg_frame_rate.num && st->avg_frame_rate.den && 1.0/av_q2d(st->avg_frame_rate) > av_q2d(codec->time_base)) - put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1E9/av_q2d(st->avg_frame_rate)); - else - put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, av_q2d(codec->time_base)*1E9); - - if (!native_id && - ff_codec_get_tag(ff_codec_movvideo_tags, codec->codec_id) && - (!ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id) - || codec->codec_id == AV_CODEC_ID_SVQ1 - || codec->codec_id == AV_CODEC_ID_SVQ3 - || codec->codec_id == AV_CODEC_ID_CINEPAK)) - qt_id = 1; - - if (qt_id) - put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME"); - else if (!native_id) { - // if there is no mkv-specific codec ID, use VFW mode - put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC"); - mkv->tracks[i].write_dts = 1; - } - - subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0); - // XXX: interlace flag? - put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width); - put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height); - - if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) || - (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) { - // save stereo mode flag - uint64_t st_mode = MATROSKA_VIDEO_STEREO_MODE_COUNT; - - for (j=0; j<MATROSKA_VIDEO_STEREO_MODE_COUNT; j++) - if (!strcmp(tag->value, ff_matroska_video_stereo_mode[j])){ - st_mode = j; - break; - } - - if ((mkv->mode == MODE_WEBM && st_mode > 3 && st_mode != 11) - || st_mode >= MATROSKA_VIDEO_STEREO_MODE_COUNT) { - av_log(s, AV_LOG_ERROR, - "The specified stereo mode is not valid.\n"); - return AVERROR(EINVAL); - } else - put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, st_mode); - } - - if (st->sample_aspect_ratio.num) { - int64_t d_width = av_rescale(codec->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den); - if (d_width > INT_MAX) { - av_log(s, AV_LOG_ERROR, "Overflow in display width\n"); - return AVERROR(EINVAL); - } - put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width); - put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height); - } - - if (codec->codec_id == AV_CODEC_ID_RAWVIDEO) { - uint32_t color_space = av_le2ne32(codec->codec_tag); - put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space)); - } - end_ebml_master(pb, subinfo); - break; - - case AVMEDIA_TYPE_AUDIO: - put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_AUDIO); - - if (!native_id) - // no mkv-specific ID, use ACM mode - put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM"); - - subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0); - put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , codec->channels); - put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate); - if (output_sample_rate) - put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate); - if (bit_depth) - put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth); - end_ebml_master(pb, subinfo); - break; - - case AVMEDIA_TYPE_SUBTITLE: - put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_SUBTITLE); - if (!native_id) { - av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", codec->codec_id); - return AVERROR(ENOSYS); - } - break; - default: - av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n"); - break; - } - ret = mkv_write_codecprivate(s, pb, codec, native_id, qt_id); - if (ret < 0) return ret; - - end_ebml_master(pb, track); - - // ms precision is the de-facto standard timescale for mkv files - avpriv_set_pts_info(st, 64, 1, 1000); - } - end_ebml_master(pb, tracks); - return 0; -} - -static int mkv_write_chapters(AVFormatContext *s) -{ - MatroskaMuxContext *mkv = s->priv_data; - AVIOContext *pb = s->pb; - ebml_master chapters, editionentry; - AVRational scale = {1, 1E9}; - int i, ret; - - if (!s->nb_chapters) - return 0; - - ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CHAPTERS, avio_tell(pb)); - if (ret < 0) return ret; - - chapters = start_ebml_master(pb, MATROSKA_ID_CHAPTERS , 0); - editionentry = start_ebml_master(pb, MATROSKA_ID_EDITIONENTRY, 0); - put_ebml_uint(pb, MATROSKA_ID_EDITIONFLAGDEFAULT, 1); - put_ebml_uint(pb, MATROSKA_ID_EDITIONFLAGHIDDEN , 0); - for (i = 0; i < s->nb_chapters; i++) { - ebml_master chapteratom, chapterdisplay; - AVChapter *c = s->chapters[i]; - AVDictionaryEntry *t = NULL; - - chapteratom = start_ebml_master(pb, MATROSKA_ID_CHAPTERATOM, 0); - put_ebml_uint(pb, MATROSKA_ID_CHAPTERUID, c->id); - put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMESTART, - av_rescale_q(c->start, c->time_base, scale)); - put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMEEND, - av_rescale_q(c->end, c->time_base, scale)); - put_ebml_uint(pb, MATROSKA_ID_CHAPTERFLAGHIDDEN , 0); - put_ebml_uint(pb, MATROSKA_ID_CHAPTERFLAGENABLED, 1); - if ((t = av_dict_get(c->metadata, "title", NULL, 0))) { - chapterdisplay = start_ebml_master(pb, MATROSKA_ID_CHAPTERDISPLAY, 0); - put_ebml_string(pb, MATROSKA_ID_CHAPSTRING, t->value); - put_ebml_string(pb, MATROSKA_ID_CHAPLANG , "und"); - end_ebml_master(pb, chapterdisplay); - } - end_ebml_master(pb, chapteratom); - } - end_ebml_master(pb, editionentry); - end_ebml_master(pb, chapters); - return 0; -} - -static void mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t) -{ - uint8_t *key = av_strdup(t->key); - uint8_t *p = key; - const uint8_t *lang = NULL; - ebml_master tag; - - if ((p = strrchr(p, '-')) && - (lang = av_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL))) - *p = 0; - - p = key; - while (*p) { - if (*p == ' ') - *p = '_'; - else if (*p >= 'a' && *p <= 'z') - *p -= 'a' - 'A'; - p++; - } - - tag = start_ebml_master(pb, MATROSKA_ID_SIMPLETAG, 0); - put_ebml_string(pb, MATROSKA_ID_TAGNAME, key); - if (lang) - put_ebml_string(pb, MATROSKA_ID_TAGLANG, lang); - put_ebml_string(pb, MATROSKA_ID_TAGSTRING, t->value); - end_ebml_master(pb, tag); - - av_freep(&key); -} - -static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid, - unsigned int uid, ebml_master *tags) -{ - MatroskaMuxContext *mkv = s->priv_data; - ebml_master tag, targets; - AVDictionaryEntry *t = NULL; - int ret; - - if (!tags->pos) { - ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TAGS, avio_tell(s->pb)); - if (ret < 0) return ret; - - *tags = start_ebml_master(s->pb, MATROSKA_ID_TAGS, 0); - } - - tag = start_ebml_master(s->pb, MATROSKA_ID_TAG, 0); - targets = start_ebml_master(s->pb, MATROSKA_ID_TAGTARGETS, 0); - if (elementid) - put_ebml_uint(s->pb, elementid, uid); - end_ebml_master(s->pb, targets); - - while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) - if (av_strcasecmp(t->key, "title") && av_strcasecmp(t->key, "stereo_mode")) - mkv_write_simpletag(s->pb, t); - - end_ebml_master(s->pb, tag); - return 0; -} - -static int mkv_write_tags(AVFormatContext *s) -{ - ebml_master tags = {0}; - int i, ret; - - ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL); - - if (av_dict_get(s->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX)) { - ret = mkv_write_tag(s, s->metadata, 0, 0, &tags); - if (ret < 0) return ret; - } - - for (i = 0; i < s->nb_streams; i++) { - AVStream *st = s->streams[i]; - - if (!av_dict_get(st->metadata, "", 0, AV_DICT_IGNORE_SUFFIX)) - continue; - - ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &tags); - if (ret < 0) return ret; - } - - for (i = 0; i < s->nb_chapters; i++) { - AVChapter *ch = s->chapters[i]; - - if (!av_dict_get(ch->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX)) - continue; - - ret = mkv_write_tag(s, ch->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID, ch->id, &tags); - if (ret < 0) return ret; - } - - if (tags.pos) - end_ebml_master(s->pb, tags); - return 0; -} - -static int mkv_write_attachments(AVFormatContext *s) -{ - MatroskaMuxContext *mkv = s->priv_data; - AVIOContext *pb = s->pb; - ebml_master attachments; - AVLFG c; - int i, ret; - - if (!mkv->have_attachments) - return 0; - - av_lfg_init(&c, av_get_random_seed()); - - ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_ATTACHMENTS, avio_tell(pb)); - if (ret < 0) return ret; - - attachments = start_ebml_master(pb, MATROSKA_ID_ATTACHMENTS, 0); - - for (i = 0; i < s->nb_streams; i++) { - AVStream *st = s->streams[i]; - ebml_master attached_file; - AVDictionaryEntry *t; - const char *mimetype = NULL; - uint64_t fileuid; - - if (st->codec->codec_type != AVMEDIA_TYPE_ATTACHMENT) - continue; - - attached_file = start_ebml_master(pb, MATROSKA_ID_ATTACHEDFILE, 0); - - if (t = av_dict_get(st->metadata, "title", NULL, 0)) - put_ebml_string(pb, MATROSKA_ID_FILEDESC, t->value); - if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) { - av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i); - return AVERROR(EINVAL); - } - put_ebml_string(pb, MATROSKA_ID_FILENAME, t->value); - if (t = av_dict_get(st->metadata, "mimetype", NULL, 0)) - mimetype = t->value; - else if (st->codec->codec_id != AV_CODEC_ID_NONE ) { - int i; - for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++) - if (ff_mkv_mime_tags[i].id == st->codec->codec_id) { - mimetype = ff_mkv_mime_tags[i].str; - break; - } - } - if (!mimetype) { - av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and " - "it cannot be deduced from the codec id.\n", i); - return AVERROR(EINVAL); - } - - if (st->codec->flags & CODEC_FLAG_BITEXACT) { - struct AVSHA *sha = av_sha_alloc(); - uint8_t digest[20]; - if (!sha) - return AVERROR(ENOMEM); - av_sha_init(sha, 160); - av_sha_update(sha, st->codec->extradata, st->codec->extradata_size); - av_sha_final(sha, digest); - av_free(sha); - fileuid = AV_RL64(digest); - } else { - fileuid = av_lfg_get(&c); - } - av_log(s, AV_LOG_VERBOSE, "Using %.16"PRIx64" for attachment %d\n", - fileuid, i); - - put_ebml_string(pb, MATROSKA_ID_FILEMIMETYPE, mimetype); - put_ebml_binary(pb, MATROSKA_ID_FILEDATA, st->codec->extradata, st->codec->extradata_size); - put_ebml_uint(pb, MATROSKA_ID_FILEUID, fileuid); - end_ebml_master(pb, attached_file); - } - end_ebml_master(pb, attachments); - - return 0; -} - -static int mkv_write_header(AVFormatContext *s) -{ - MatroskaMuxContext *mkv = s->priv_data; - AVIOContext *pb = s->pb; - ebml_master ebml_header, segment_info; - AVDictionaryEntry *tag; - int ret, i; - - if (!strcmp(s->oformat->name, "webm")) mkv->mode = MODE_WEBM; - else mkv->mode = MODE_MATROSKAv2; - - if (s->avoid_negative_ts < 0) - s->avoid_negative_ts = 1; - - for (i = 0; i < s->nb_streams; i++) - if (s->streams[i]->codec->codec_id == AV_CODEC_ID_ATRAC3 || - s->streams[i]->codec->codec_id == AV_CODEC_ID_COOK || - s->streams[i]->codec->codec_id == AV_CODEC_ID_RA_288 || - s->streams[i]->codec->codec_id == AV_CODEC_ID_SIPR || - s->streams[i]->codec->codec_id == AV_CODEC_ID_RV10 || - s->streams[i]->codec->codec_id == AV_CODEC_ID_RV20) { - av_log(s, AV_LOG_ERROR, - "The Matroska muxer does not yet support muxing %s\n", - avcodec_get_name(s->streams[i]->codec->codec_id)); - return AVERROR_PATCHWELCOME; - } - - mkv->tracks = av_mallocz(s->nb_streams * sizeof(*mkv->tracks)); - if (!mkv->tracks) - return AVERROR(ENOMEM); - - ebml_header = start_ebml_master(pb, EBML_ID_HEADER, 0); - put_ebml_uint (pb, EBML_ID_EBMLVERSION , 1); - put_ebml_uint (pb, EBML_ID_EBMLREADVERSION , 1); - put_ebml_uint (pb, EBML_ID_EBMLMAXIDLENGTH , 4); - put_ebml_uint (pb, EBML_ID_EBMLMAXSIZELENGTH , 8); - put_ebml_string (pb, EBML_ID_DOCTYPE , s->oformat->name); - put_ebml_uint (pb, EBML_ID_DOCTYPEVERSION , 2); - put_ebml_uint (pb, EBML_ID_DOCTYPEREADVERSION , 2); - end_ebml_master(pb, ebml_header); - - mkv->segment = start_ebml_master(pb, MATROSKA_ID_SEGMENT, 0); - mkv->segment_offset = avio_tell(pb); - - // we write 2 seek heads - one at the end of the file to point to each - // cluster, and one at the beginning to point to all other level one - // elements (including the seek head at the end of the file), which - // isn't more than 10 elements if we only write one of each other - // currently defined level 1 element - mkv->main_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 10); - if (!mkv->main_seekhead) - return AVERROR(ENOMEM); - - ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_INFO, avio_tell(pb)); - if (ret < 0) return ret; - - segment_info = start_ebml_master(pb, MATROSKA_ID_INFO, 0); - put_ebml_uint(pb, MATROSKA_ID_TIMECODESCALE, 1000000); - if ((tag = av_dict_get(s->metadata, "title", NULL, 0))) - put_ebml_string(pb, MATROSKA_ID_TITLE, tag->value); - if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) { - uint32_t segment_uid[4]; - AVLFG lfg; - - av_lfg_init(&lfg, av_get_random_seed()); - - for (i = 0; i < 4; i++) - segment_uid[i] = av_lfg_get(&lfg); - - put_ebml_string(pb, MATROSKA_ID_MUXINGAPP , LIBAVFORMAT_IDENT); - put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, LIBAVFORMAT_IDENT); - put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16); - } - - if (tag = av_dict_get(s->metadata, "creation_time", NULL, 0)) { - // Adjust time so it's relative to 2001-01-01 and convert to nanoseconds. - int64_t date_utc = (ff_iso8601_to_unix_time(tag->value) - 978307200) * 1000000000; - uint8_t date_utc_buf[8]; - AV_WB64(date_utc_buf, date_utc); - put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8); - } - - // reserve space for the duration - mkv->duration = 0; - mkv->duration_offset = avio_tell(pb); - put_ebml_void(pb, 11); // assumes double-precision float to be written - end_ebml_master(pb, segment_info); - - ret = mkv_write_tracks(s); - if (ret < 0) return ret; - - if (mkv->mode != MODE_WEBM) { - ret = mkv_write_chapters(s); - if (ret < 0) return ret; - - ret = mkv_write_tags(s); - if (ret < 0) return ret; - - ret = mkv_write_attachments(s); - if (ret < 0) return ret; - } - - if (!s->pb->seekable) - mkv_write_seekhead(pb, mkv->main_seekhead); - - mkv->cues = mkv_start_cues(mkv->segment_offset); - if (mkv->cues == NULL) - return AVERROR(ENOMEM); - - av_init_packet(&mkv->cur_audio_pkt); - mkv->cur_audio_pkt.size = 0; - mkv->cluster_pos = -1; - - avio_flush(pb); - return 0; -} - -static int mkv_blockgroup_size(int pkt_size) -{ - int size = pkt_size + 4; - size += ebml_num_size(size); - size += 2; // EBML ID for block and block duration - size += 8; // max size of block duration - size += ebml_num_size(size); - size += 1; // blockgroup EBML ID - return size; -} - -static int ass_get_duration(const uint8_t *p) -{ - int sh, sm, ss, sc, eh, em, es, ec; - uint64_t start, end; - - if (sscanf(p, "%*[^,],%d:%d:%d%*c%d,%d:%d:%d%*c%d", - &sh, &sm, &ss, &sc, &eh, &em, &es, &ec) != 8) - return 0; - start = 3600000LL*sh + 60000LL*sm + 1000LL*ss + 10LL*sc; - end = 3600000LL*eh + 60000LL*em + 1000LL*es + 10LL*ec; - return end - start; -} - -static int mkv_write_ass_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt) -{ - MatroskaMuxContext *mkv = s->priv_data; - int i, layer = 0, max_duration = 0, size, line_size, data_size = pkt->size; - uint8_t *start, *end, *data = pkt->data; - ebml_master blockgroup; - char buffer[2048]; - - while (data_size) { - int duration = ass_get_duration(data); - max_duration = FFMAX(duration, max_duration); - end = memchr(data, '\n', data_size); - size = line_size = end ? end-data+1 : data_size; - size -= end ? (end[-1]=='\r')+1 : 0; - start = data; - for (i=0; i<3; i++, start++) - if (!(start = memchr(start, ',', size-(start-data)))) - return max_duration; - size -= start - data; - sscanf(data, "Dialogue: %d,", &layer); - i = snprintf(buffer, sizeof(buffer), "%"PRId64",%d,", - s->streams[pkt->stream_index]->nb_frames, layer); - size = FFMIN(i+size, sizeof(buffer)); - memcpy(buffer+i, start, size-i); - - av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, " - "pts %" PRId64 ", duration %d\n", - avio_tell(pb), size, pkt->pts, duration); - blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, mkv_blockgroup_size(size)); - put_ebml_id(pb, MATROSKA_ID_BLOCK); - put_ebml_num(pb, size+4, 0); - avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126 - avio_wb16(pb, pkt->pts - mkv->cluster_pts); - avio_w8(pb, 0); - avio_write(pb, buffer, size); - put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration); - end_ebml_master(pb, blockgroup); - - data += line_size; - data_size -= line_size; - } - - return max_duration; -} - -static void mkv_write_block(AVFormatContext *s, AVIOContext *pb, - unsigned int blockid, AVPacket *pkt, int flags) -{ - MatroskaMuxContext *mkv = s->priv_data; - AVCodecContext *codec = s->streams[pkt->stream_index]->codec; - uint8_t *data = NULL; - int offset = 0, size = pkt->size; - int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts; - - av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, " - "pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n", - avio_tell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration, flags); - if (codec->codec_id == AV_CODEC_ID_H264 && codec->extradata_size > 0 && - (AV_RB24(codec->extradata) == 1 || AV_RB32(codec->extradata) == 1)) - ff_avc_parse_nal_units_buf(pkt->data, &data, &size); - else - data = pkt->data; - - if (codec->codec_id == AV_CODEC_ID_PRORES) { - /* Matroska specification requires to remove the first QuickTime atom - */ - size -= 8; - offset = 8; - } - - put_ebml_id(pb, blockid); - put_ebml_num(pb, size+4, 0); - avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126 - avio_wb16(pb, ts - mkv->cluster_pts); - avio_w8(pb, flags); - avio_write(pb, data + offset, size); - if (data != pkt->data) - av_free(data); -} - -static int srt_get_duration(uint8_t **buf) -{ - int i, duration = 0; - - for (i=0; i<2 && !duration; i++) { - int s_hour, s_min, s_sec, s_hsec, e_hour, e_min, e_sec, e_hsec; - if (sscanf(*buf, "%d:%2d:%2d%*1[,.]%3d --> %d:%2d:%2d%*1[,.]%3d", - &s_hour, &s_min, &s_sec, &s_hsec, - &e_hour, &e_min, &e_sec, &e_hsec) == 8) { - s_min += 60*s_hour; e_min += 60*e_hour; - s_sec += 60*s_min; e_sec += 60*e_min; - s_hsec += 1000*s_sec; e_hsec += 1000*e_sec; - duration = e_hsec - s_hsec; - } - *buf += strcspn(*buf, "\n") + 1; - } - return duration; -} - -static int mkv_write_srt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt) -{ - ebml_master blockgroup; - AVPacket pkt2 = *pkt; - int64_t duration = srt_get_duration(&pkt2.data); - pkt2.size -= pkt2.data - pkt->data; - - blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, - mkv_blockgroup_size(pkt2.size)); - mkv_write_block(s, pb, MATROSKA_ID_BLOCK, &pkt2, 0); - put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration); - end_ebml_master(pb, blockgroup); - - return duration; -} - -static void mkv_flush_dynbuf(AVFormatContext *s) -{ - MatroskaMuxContext *mkv = s->priv_data; - int bufsize; - uint8_t *dyn_buf; - - if (!mkv->dyn_bc) - return; - - bufsize = avio_close_dyn_buf(mkv->dyn_bc, &dyn_buf); - avio_write(s->pb, dyn_buf, bufsize); - av_free(dyn_buf); - mkv->dyn_bc = NULL; -} - -static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt) -{ - MatroskaMuxContext *mkv = s->priv_data; - AVIOContext *pb = s->pb; - AVCodecContext *codec = s->streams[pkt->stream_index]->codec; - int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY); - int duration = pkt->duration; - int ret; - int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts; - - if (ts == AV_NOPTS_VALUE) { - av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n"); - return AVERROR(EINVAL); - } - - if (!s->pb->seekable) { - if (!mkv->dyn_bc) { - if ((ret = avio_open_dyn_buf(&mkv->dyn_bc)) < 0) { - av_log(s, AV_LOG_ERROR, "Failed to open dynamic buffer\n"); - return ret; - } - } - pb = mkv->dyn_bc; - } - - if (mkv->cluster_pos == -1) { - mkv->cluster_pos = avio_tell(s->pb); - mkv->cluster = start_ebml_master(pb, MATROSKA_ID_CLUSTER, 0); - put_ebml_uint(pb, MATROSKA_ID_CLUSTERTIMECODE, FFMAX(0, ts)); - mkv->cluster_pts = FFMAX(0, ts); - } - - if (codec->codec_type != AVMEDIA_TYPE_SUBTITLE) { - mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe << 7); - } else if (codec->codec_id == AV_CODEC_ID_SSA) { - duration = mkv_write_ass_blocks(s, pb, pkt); - } else if (codec->codec_id == AV_CODEC_ID_SRT) { - duration = mkv_write_srt_blocks(s, pb, pkt); - } else { - ebml_master blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, mkv_blockgroup_size(pkt->size)); - /* For backward compatibility, prefer convergence_duration. */ - if (pkt->convergence_duration > 0) { - duration = pkt->convergence_duration; - } - mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 0); - put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration); - end_ebml_master(pb, blockgroup); - } - - if (codec->codec_type == AVMEDIA_TYPE_VIDEO && keyframe) { - ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, ts, mkv->cluster_pos); - if (ret < 0) return ret; - } - - mkv->duration = FFMAX(mkv->duration, ts + duration); - return 0; -} - -static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt) -{ - MatroskaMuxContext *mkv = s->priv_data; - AVIOContext *pb = s->pb->seekable ? s->pb : mkv->dyn_bc; - AVCodecContext *codec = s->streams[pkt->stream_index]->codec; - int ret, keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY); - int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts; - int cluster_size = avio_tell(pb) - (s->pb->seekable ? mkv->cluster_pos : 0); - - // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or - // after 4k and on a keyframe - if (mkv->cluster_pos != -1 && - ((!s->pb->seekable && (cluster_size > 32*1024 || ts > mkv->cluster_pts + 1000)) - || cluster_size > 5*1024*1024 || ts > mkv->cluster_pts + 5000 - || (codec->codec_type == AVMEDIA_TYPE_VIDEO && keyframe && cluster_size > 4*1024))) { - av_log(s, AV_LOG_DEBUG, "Starting new cluster at offset %" PRIu64 - " bytes, pts %" PRIu64 "\n", avio_tell(pb), ts); - end_ebml_master(pb, mkv->cluster); - mkv->cluster_pos = -1; - if (mkv->dyn_bc) - mkv_flush_dynbuf(s); - } - - // check if we have an audio packet cached - if (mkv->cur_audio_pkt.size > 0) { - ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt); - av_free_packet(&mkv->cur_audio_pkt); - if (ret < 0) { - av_log(s, AV_LOG_ERROR, "Could not write cached audio packet ret:%d\n", ret); - return ret; - } - } - - // buffer an audio packet to ensure the packet containing the video - // keyframe's timecode is contained in the same cluster for WebM - if (codec->codec_type == AVMEDIA_TYPE_AUDIO) { - mkv->cur_audio_pkt = *pkt; - mkv->cur_audio_pkt.buf = av_buffer_ref(pkt->buf); - ret = mkv->cur_audio_pkt.buf ? 0 : AVERROR(ENOMEM); - } else - ret = mkv_write_packet_internal(s, pkt); - return ret; -} - -static int mkv_write_trailer(AVFormatContext *s) -{ - MatroskaMuxContext *mkv = s->priv_data; - AVIOContext *pb = s->pb; - int64_t currentpos, cuespos; - int ret; - - // check if we have an audio packet cached - if (mkv->cur_audio_pkt.size > 0) { - ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt); - av_free_packet(&mkv->cur_audio_pkt); - if (ret < 0) { - av_log(s, AV_LOG_ERROR, "Could not write cached audio packet ret:%d\n", ret); - return ret; - } - } - - if (mkv->dyn_bc) { - end_ebml_master(mkv->dyn_bc, mkv->cluster); - mkv_flush_dynbuf(s); - } else if (mkv->cluster_pos != -1) { - end_ebml_master(pb, mkv->cluster); - } - - if (pb->seekable) { - if (mkv->cues->num_entries) { - cuespos = mkv_write_cues(pb, mkv->cues, mkv->tracks, s->nb_streams); - - ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CUES, cuespos); - if (ret < 0) return ret; - } - - mkv_write_seekhead(pb, mkv->main_seekhead); - - // update the duration - av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration); - currentpos = avio_tell(pb); - avio_seek(pb, mkv->duration_offset, SEEK_SET); - put_ebml_float(pb, MATROSKA_ID_DURATION, mkv->duration); - - avio_seek(pb, currentpos, SEEK_SET); - } - - end_ebml_master(pb, mkv->segment); - av_free(mkv->tracks); - av_freep(&mkv->cues->entries); - av_freep(&mkv->cues); - - return 0; -} - -static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance) -{ - int i; - for (i = 0; ff_mkv_codec_tags[i].id != AV_CODEC_ID_NONE; i++) - if (ff_mkv_codec_tags[i].id == codec_id) - return 1; - - if (std_compliance < FF_COMPLIANCE_NORMAL) { // mkv theoretically supports any - enum AVMediaType type = avcodec_get_type(codec_id); // video/audio through VFW/ACM - if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO) - return 1; - } - - return 0; -} - -const AVCodecTag additional_audio_tags[] = { - { AV_CODEC_ID_ALAC, 0XFFFFFFFF }, - { AV_CODEC_ID_EAC3, 0XFFFFFFFF }, - { AV_CODEC_ID_MLP, 0xFFFFFFFF }, - { AV_CODEC_ID_OPUS, 0xFFFFFFFF }, - { AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF }, - { AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF }, - { AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF }, - { AV_CODEC_ID_QDM2, 0xFFFFFFFF }, - { AV_CODEC_ID_RA_144, 0xFFFFFFFF }, - { AV_CODEC_ID_RA_288, 0xFFFFFFFF }, - { AV_CODEC_ID_COOK, 0xFFFFFFFF }, - { AV_CODEC_ID_TRUEHD, 0xFFFFFFFF }, - { AV_CODEC_ID_WAVPACK, 0xFFFFFFFF }, - { AV_CODEC_ID_NONE, 0xFFFFFFFF } -}; - -const AVCodecTag additional_video_tags[] = { - { AV_CODEC_ID_PRORES, 0xFFFFFFFF }, - { AV_CODEC_ID_RV10, 0xFFFFFFFF }, - { AV_CODEC_ID_RV20, 0xFFFFFFFF }, - { AV_CODEC_ID_RV30, 0xFFFFFFFF }, - { AV_CODEC_ID_RV40, 0xFFFFFFFF }, - { AV_CODEC_ID_VP9, 0xFFFFFFFF }, - { AV_CODEC_ID_NONE, 0xFFFFFFFF } -}; - -#if CONFIG_MATROSKA_MUXER -AVOutputFormat ff_matroska_muxer = { - .name = "matroska", - .long_name = NULL_IF_CONFIG_SMALL("Matroska"), - .mime_type = "video/x-matroska", - .extensions = "mkv", - .priv_data_size = sizeof(MatroskaMuxContext), - .audio_codec = CONFIG_LIBVORBIS_ENCODER ? - AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3, - .video_codec = CONFIG_LIBX264_ENCODER ? - AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4, - .write_header = mkv_write_header, - .write_packet = mkv_write_packet, - .write_trailer = mkv_write_trailer, - .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | - AVFMT_TS_NONSTRICT, - .codec_tag = (const AVCodecTag* const []){ - ff_codec_bmp_tags, ff_codec_wav_tags, - additional_audio_tags, additional_video_tags, 0 - }, - .subtitle_codec = AV_CODEC_ID_SSA, - .query_codec = mkv_query_codec, -}; -#endif - -#if CONFIG_WEBM_MUXER -AVOutputFormat ff_webm_muxer = { - .name = "webm", - .long_name = NULL_IF_CONFIG_SMALL("WebM"), - .mime_type = "video/webm", - .extensions = "webm", - .priv_data_size = sizeof(MatroskaMuxContext), - .audio_codec = AV_CODEC_ID_VORBIS, - .video_codec = AV_CODEC_ID_VP8, - .write_header = mkv_write_header, - .write_packet = mkv_write_packet, - .write_trailer = mkv_write_trailer, - .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | - AVFMT_TS_NONSTRICT, -}; -#endif - -#if CONFIG_MATROSKA_AUDIO_MUXER -AVOutputFormat ff_matroska_audio_muxer = { - .name = "matroska", - .long_name = NULL_IF_CONFIG_SMALL("Matroska"), - .mime_type = "audio/x-matroska", - .extensions = "mka", - .priv_data_size = sizeof(MatroskaMuxContext), - .audio_codec = CONFIG_LIBVORBIS_ENCODER ? - AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3, - .video_codec = AV_CODEC_ID_NONE, - .write_header = mkv_write_header, - .write_packet = mkv_write_packet, - .write_trailer = mkv_write_trailer, - .flags = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT, - .codec_tag = (const AVCodecTag* const []){ - ff_codec_wav_tags, additional_audio_tags, 0 - }, -}; -#endif |