| /* |
| * 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 <stdint.h> |
| |
| #include "avc.h" |
| #include "hevc.h" |
| #include "avformat.h" |
| #include "avio_internal.h" |
| #include "avlanguage.h" |
| #include "flacenc.h" |
| #include "internal.h" |
| #include "isom.h" |
| #include "matroska.h" |
| #include "riff.h" |
| #include "subtitles.h" |
| #include "vorbiscomment.h" |
| #include "wv.h" |
| |
| #include "libavutil/avstring.h" |
| #include "libavutil/channel_layout.h" |
| #include "libavutil/crc.h" |
| #include "libavutil/dict.h" |
| #include "libavutil/intfloat.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/lfg.h" |
| #include "libavutil/mastering_display_metadata.h" |
| #include "libavutil/mathematics.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/parseutils.h" |
| #include "libavutil/random_seed.h" |
| #include "libavutil/rational.h" |
| #include "libavutil/samplefmt.h" |
| #include "libavutil/sha.h" |
| #include "libavutil/stereo3d.h" |
| |
| #include "libavcodec/xiph.h" |
| #include "libavcodec/mpeg4audio.h" |
| #include "libavcodec/internal.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 mkv_cuepoint { |
| uint64_t pts; |
| int stream_idx; |
| int tracknum; |
| int64_t cluster_pos; ///< file offset of the cluster containing the block |
| int64_t relative_pos; ///< relative offset from the position of the cluster containing the block |
| int64_t duration; ///< duration of the block according to time base |
| } mkv_cuepoint; |
| |
| typedef struct mkv_cues { |
| int64_t segment_offset; |
| mkv_cuepoint *entries; |
| int num_entries; |
| } mkv_cues; |
| |
| typedef struct mkv_track { |
| int write_dts; |
| int has_cue; |
| int64_t ts_offset; |
| } mkv_track; |
| |
| typedef struct mkv_attachment { |
| int stream_idx; |
| uint32_t fileuid; |
| } mkv_attachment; |
| |
| typedef struct mkv_attachments { |
| mkv_attachment *entries; |
| int num_entries; |
| } mkv_attachments; |
| |
| #define MODE_MATROSKAv2 0x01 |
| #define MODE_WEBM 0x02 |
| |
| /** Maximum number of tracks allowed in a Matroska file (with track numbers in |
| * range 1 to 126 (inclusive) */ |
| #define MAX_TRACKS 126 |
| |
| typedef struct MatroskaMuxContext { |
| const AVClass *class; |
| int mode; |
| AVIOContext *dyn_bc; |
| AVIOContext *tags_bc; |
| ebml_master tags; |
| AVIOContext *info_bc; |
| ebml_master info; |
| 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; |
| mkv_attachments *attachments; |
| |
| AVPacket cur_audio_pkt; |
| |
| int have_attachments; |
| int have_video; |
| |
| int reserve_cues_space; |
| int cluster_size_limit; |
| int64_t cues_pos; |
| int64_t cluster_time_limit; |
| int is_dash; |
| int dash_track_number; |
| int is_live; |
| int write_crc; |
| |
| uint32_t chapter_id_offset; |
| int wrote_chapters; |
| |
| int64_t last_track_timestamp[MAX_TRACKS]; |
| |
| int64_t* stream_durations; |
| int64_t* stream_duration_offsets; |
| |
| int allow_raw_vfw; |
| } 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 - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4 |
| * 8-byte uint max */ |
| #define MAX_CUETRACKPOS_SIZE 42 |
| |
| /** 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 |
| |
| /** Seek preroll value for opus */ |
| #define OPUS_SEEK_PREROLL 80000000 |
| |
| 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); |
| ffio_fill(pb, 0xff, bytes - 1); |
| } |
| |
| /** |
| * 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_sint(AVIOContext *pb, unsigned int elementid, int64_t val) |
| { |
| int i, bytes = 1; |
| uint64_t tmp = 2*(val < 0 ? val^-1 : 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 - 2, 0); |
| else |
| put_ebml_num(pb, size - 9, 8); |
| ffio_fill(pb, 0, currentpos + size - avio_tell(pb)); |
| } |
| |
| 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 int start_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, MatroskaMuxContext *mkv, |
| ebml_master *master, unsigned int elementid, uint64_t expectedsize) |
| { |
| int ret; |
| |
| if ((ret = avio_open_dyn_buf(dyn_cp)) < 0) |
| return ret; |
| |
| if (pb->seekable) { |
| *master = start_ebml_master(pb, elementid, expectedsize); |
| if (mkv->write_crc && mkv->mode != MODE_WEBM) |
| put_ebml_void(*dyn_cp, 6); /* Reserve space for CRC32 so position/size calculations using avio_tell() take it into account */ |
| } else |
| *master = start_ebml_master(*dyn_cp, elementid, expectedsize); |
| |
| return 0; |
| } |
| |
| static void end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, MatroskaMuxContext *mkv, |
| ebml_master master) |
| { |
| uint8_t *buf, crc[4]; |
| int size, skip = 0; |
| |
| if (pb->seekable) { |
| size = avio_close_dyn_buf(*dyn_cp, &buf); |
| if (mkv->write_crc && mkv->mode != MODE_WEBM) { |
| skip = 6; /* Skip reserved 6-byte long void element from the dynamic buffer. */ |
| AV_WL32(crc, av_crc(av_crc_get_table(AV_CRC_32_IEEE_LE), UINT32_MAX, buf + skip, size - skip) ^ UINT32_MAX); |
| put_ebml_binary(pb, EBML_ID_CRC32, crc, sizeof(crc)); |
| } |
| avio_write(pb, buf + skip, size - skip); |
| end_ebml_master(pb, master); |
| } else { |
| end_ebml_master(*dyn_cp, master); |
| size = avio_close_dyn_buf(*dyn_cp, &buf); |
| avio_write(pb, buf, size); |
| } |
| av_free(buf); |
| *dyn_cp = NULL; |
| } |
| |
| static void put_xiph_size(AVIOContext *pb, int size) |
| { |
| ffio_fill(pb, 255, size / 255); |
| avio_w8(pb, size % 255); |
| } |
| |
| /** |
| * Free the members allocated in the mux context. |
| */ |
| static void mkv_free(MatroskaMuxContext *mkv) { |
| if (mkv->main_seekhead) { |
| av_freep(&mkv->main_seekhead->entries); |
| av_freep(&mkv->main_seekhead); |
| } |
| if (mkv->cues) { |
| av_freep(&mkv->cues->entries); |
| av_freep(&mkv->cues); |
| } |
| if (mkv->attachments) { |
| av_freep(&mkv->attachments->entries); |
| av_freep(&mkv->attachments); |
| } |
| av_freep(&mkv->tracks); |
| av_freep(&mkv->stream_durations); |
| av_freep(&mkv->stream_duration_offsets); |
| } |
| |
| /** |
| * 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) |
| 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, 6 bytes for a CRC32 element, and 3 bytes to guarantee |
| // that an EBML void element will fit afterwards |
| new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 19; |
| 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_array(entries, seekhead->num_entries + 1, sizeof(mkv_seekhead_entry)); |
| if (!entries) |
| return AVERROR(ENOMEM); |
| seekhead->entries = entries; |
| |
| seekhead->entries[seekhead->num_entries].elementid = elementid; |
| seekhead->entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset; |
| |
| 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, MatroskaMuxContext *mkv) |
| { |
| AVIOContext *dyn_cp; |
| mkv_seekhead *seekhead = mkv->main_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; |
| } |
| } |
| |
| if (start_ebml_master_crc32(pb, &dyn_cp, mkv, &metaseek, MATROSKA_ID_SEEKHEAD, |
| seekhead->reserved_size) < 0) { |
| currentpos = -1; |
| goto fail; |
| } |
| |
| for (i = 0; i < seekhead->num_entries; i++) { |
| mkv_seekhead_entry *entry = &seekhead->entries[i]; |
| |
| seekentry = start_ebml_master(dyn_cp, MATROSKA_ID_SEEKENTRY, MAX_SEEKENTRY_SIZE); |
| |
| put_ebml_id(dyn_cp, MATROSKA_ID_SEEKID); |
| put_ebml_num(dyn_cp, ebml_id_size(entry->elementid), 0); |
| put_ebml_id(dyn_cp, entry->elementid); |
| |
| put_ebml_uint(dyn_cp, MATROSKA_ID_SEEKPOSITION, entry->segmentpos); |
| end_ebml_master(dyn_cp, seekentry); |
| } |
| end_ebml_master_crc32(pb, &dyn_cp, mkv, 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_freep(&mkv->main_seekhead->entries); |
| av_freep(&mkv->main_seekhead); |
| |
| return currentpos; |
| } |
| |
| static mkv_cues *mkv_start_cues(int64_t segment_offset) |
| { |
| mkv_cues *cues = av_mallocz(sizeof(mkv_cues)); |
| if (!cues) |
| return NULL; |
| |
| cues->segment_offset = segment_offset; |
| return cues; |
| } |
| |
| static int mkv_add_cuepoint(mkv_cues *cues, int stream, int tracknum, int64_t ts, |
| int64_t cluster_pos, int64_t relative_pos, int64_t duration) |
| { |
| mkv_cuepoint *entries = cues->entries; |
| |
| if (ts < 0) |
| return 0; |
| |
| entries = av_realloc_array(entries, cues->num_entries + 1, sizeof(mkv_cuepoint)); |
| if (!entries) |
| return AVERROR(ENOMEM); |
| cues->entries = entries; |
| |
| cues->entries[cues->num_entries].pts = ts; |
| cues->entries[cues->num_entries].stream_idx = stream; |
| cues->entries[cues->num_entries].tracknum = tracknum; |
| cues->entries[cues->num_entries].cluster_pos = cluster_pos - cues->segment_offset; |
| cues->entries[cues->num_entries].relative_pos = relative_pos; |
| cues->entries[cues->num_entries++].duration = duration; |
| |
| return 0; |
| } |
| |
| static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| AVIOContext *dyn_cp, *pb = s->pb; |
| ebml_master cues_element; |
| int64_t currentpos; |
| int i, j, ret; |
| |
| currentpos = avio_tell(pb); |
| ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &cues_element, MATROSKA_ID_CUES, 0); |
| if (ret < 0) |
| return ret; |
| |
| for (i = 0; i < cues->num_entries; i++) { |
| ebml_master cuepoint, track_positions; |
| mkv_cuepoint *entry = &cues->entries[i]; |
| uint64_t pts = entry->pts; |
| int ctp_nb = 0; |
| |
| // Calculate the number of entries, so we know the element size |
| 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].stream_idx; |
| av_assert0(tracknum>=0 && tracknum<num_tracks); |
| if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) |
| continue; |
| tracks[tracknum].has_cue = 1; |
| ctp_nb ++; |
| } |
| |
| cuepoint = start_ebml_master(dyn_cp, MATROSKA_ID_POINTENTRY, MAX_CUEPOINT_SIZE(ctp_nb)); |
| put_ebml_uint(dyn_cp, 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].stream_idx; |
| av_assert0(tracknum>=0 && tracknum<num_tracks); |
| if (tracks[tracknum].has_cue && s->streams[tracknum]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) |
| continue; |
| tracks[tracknum].has_cue = 1; |
| track_positions = start_ebml_master(dyn_cp, MATROSKA_ID_CUETRACKPOSITION, MAX_CUETRACKPOS_SIZE); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_CUETRACK , entry[j].tracknum ); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_CUECLUSTERPOSITION , entry[j].cluster_pos); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_CUERELATIVEPOSITION, entry[j].relative_pos); |
| if (entry[j].duration != -1) |
| put_ebml_uint(dyn_cp, MATROSKA_ID_CUEDURATION , entry[j].duration); |
| end_ebml_master(dyn_cp, track_positions); |
| } |
| i += j - 1; |
| end_ebml_master(dyn_cp, cuepoint); |
| } |
| end_ebml_master_crc32(pb, &dyn_cp, mkv, cues_element); |
| |
| return currentpos; |
| } |
| |
| static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par) |
| { |
| const uint8_t *header_start[3]; |
| int header_len[3]; |
| int first_header_size; |
| int j; |
| |
| if (par->codec_id == AV_CODEC_ID_VORBIS) |
| first_header_size = 30; |
| else |
| first_header_size = 42; |
| |
| if (avpriv_split_xiph_headers(par->extradata, par->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 int put_wv_codecpriv(AVIOContext *pb, AVCodecParameters *par) |
| { |
| if (par->extradata && par->extradata_size == 2) |
| avio_write(pb, par->extradata, 2); |
| else |
| avio_wl16(pb, 0x403); // fallback to the version mentioned in matroska specs |
| return 0; |
| } |
| |
| static int put_flac_codecpriv(AVFormatContext *s, |
| AVIOContext *pb, AVCodecParameters *par) |
| { |
| int write_comment = (par->channel_layout && |
| !(par->channel_layout & ~0x3ffffULL) && |
| !ff_flac_is_native_layout(par->channel_layout)); |
| int ret = ff_flac_write_header(pb, par->extradata, par->extradata_size, |
| !write_comment); |
| |
| if (ret < 0) |
| return ret; |
| |
| if (write_comment) { |
| const char *vendor = (s->flags & AVFMT_FLAG_BITEXACT) ? |
| "Lavf" : LIBAVFORMAT_IDENT; |
| AVDictionary *dict = NULL; |
| uint8_t buf[32], *data, *p; |
| int64_t len; |
| |
| snprintf(buf, sizeof(buf), "0x%"PRIx64, par->channel_layout); |
| av_dict_set(&dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0); |
| |
| len = ff_vorbiscomment_length(dict, vendor); |
| if (len >= ((1<<24) - 4)) |
| return AVERROR(EINVAL); |
| |
| data = av_malloc(len + 4); |
| if (!data) { |
| av_dict_free(&dict); |
| return AVERROR(ENOMEM); |
| } |
| |
| data[0] = 0x84; |
| AV_WB24(data + 1, len); |
| |
| p = data + 4; |
| ff_vorbiscomment_write(&p, &dict, vendor); |
| |
| avio_write(pb, data, len + 4); |
| |
| av_freep(&data); |
| av_dict_free(&dict); |
| } |
| |
| return 0; |
| } |
| |
| static int get_aac_sample_rates(AVFormatContext *s, AVCodecParameters *par, |
| int *sample_rate, int *output_sample_rate) |
| { |
| MPEG4AudioConfig mp4ac; |
| |
| if (avpriv_mpeg4audio_get_config(&mp4ac, par->extradata, |
| par->extradata_size * 8, 1) < 0) { |
| av_log(s, AV_LOG_ERROR, |
| "Error parsing AAC extradata, unable to determine samplerate.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| *sample_rate = mp4ac.sample_rate; |
| *output_sample_rate = mp4ac.ext_sample_rate; |
| return 0; |
| } |
| |
| static int mkv_write_native_codecprivate(AVFormatContext *s, |
| AVCodecParameters *par, |
| AVIOContext *dyn_cp) |
| { |
| switch (par->codec_id) { |
| case AV_CODEC_ID_VORBIS: |
| case AV_CODEC_ID_THEORA: |
| return put_xiph_codecpriv(s, dyn_cp, par); |
| case AV_CODEC_ID_FLAC: |
| return put_flac_codecpriv(s, dyn_cp, par); |
| case AV_CODEC_ID_WAVPACK: |
| return put_wv_codecpriv(dyn_cp, par); |
| case AV_CODEC_ID_H264: |
| return ff_isom_write_avcc(dyn_cp, par->extradata, |
| par->extradata_size); |
| case AV_CODEC_ID_HEVC: |
| ff_isom_write_hvcc(dyn_cp, par->extradata, |
| par->extradata_size, 0); |
| return 0; |
| case AV_CODEC_ID_ALAC: |
| if (par->extradata_size < 36) { |
| av_log(s, AV_LOG_ERROR, |
| "Invalid extradata found, ALAC expects a 36-byte " |
| "QuickTime atom."); |
| return AVERROR_INVALIDDATA; |
| } else |
| avio_write(dyn_cp, par->extradata + 12, |
| par->extradata_size - 12); |
| break; |
| default: |
| if (par->codec_id == AV_CODEC_ID_PRORES && |
| ff_codec_get_id(ff_codec_movvideo_tags, par->codec_tag) == AV_CODEC_ID_PRORES) { |
| avio_wl32(dyn_cp, par->codec_tag); |
| } else if (par->extradata_size && par->codec_id != AV_CODEC_ID_TTA) |
| avio_write(dyn_cp, par->extradata, par->extradata_size); |
| } |
| |
| return 0; |
| } |
| |
| static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, |
| AVCodecParameters *par, |
| 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) { |
| ret = mkv_write_native_codecprivate(s, par, dyn_cp); |
| } else if (par->codec_type == AVMEDIA_TYPE_VIDEO) { |
| if (qt_id) { |
| if (!par->codec_tag) |
| par->codec_tag = ff_codec_get_tag(ff_codec_movvideo_tags, |
| par->codec_id); |
| if ( ff_codec_get_id(ff_codec_movvideo_tags, par->codec_tag) == par->codec_id |
| && (!par->extradata_size || ff_codec_get_id(ff_codec_movvideo_tags, AV_RL32(par->extradata + 4)) != par->codec_id) |
| ) { |
| int i; |
| avio_wb32(dyn_cp, 0x5a + par->extradata_size); |
| avio_wl32(dyn_cp, par->codec_tag); |
| for(i = 0; i < 0x5a - 8; i++) |
| avio_w8(dyn_cp, 0); |
| } |
| avio_write(dyn_cp, par->extradata, par->extradata_size); |
| } else { |
| if (!ff_codec_get_tag(ff_codec_bmp_tags, par->codec_id)) |
| av_log(s, AV_LOG_WARNING, "codec %s is not supported by this format\n", |
| avcodec_get_name(par->codec_id)); |
| |
| if (!par->codec_tag) |
| par->codec_tag = ff_codec_get_tag(ff_codec_bmp_tags, |
| par->codec_id); |
| if (!par->codec_tag && par->codec_id != AV_CODEC_ID_RAWVIDEO) { |
| av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n", |
| avcodec_get_name(par->codec_id)); |
| ret = AVERROR(EINVAL); |
| } |
| |
| ff_put_bmp_header(dyn_cp, par, ff_codec_bmp_tags, 0, 0); |
| } |
| } else if (par->codec_type == AVMEDIA_TYPE_AUDIO) { |
| unsigned int tag; |
| tag = ff_codec_get_tag(ff_codec_wav_tags, par->codec_id); |
| if (!tag) { |
| av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n", |
| avcodec_get_name(par->codec_id)); |
| ret = AVERROR(EINVAL); |
| } |
| if (!par->codec_tag) |
| par->codec_tag = tag; |
| |
| ff_put_wav_header(s, dyn_cp, par, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX); |
| } |
| |
| 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_video_color(AVIOContext *pb, AVCodecParameters *par, AVStream *st) { |
| AVIOContext *dyn_cp; |
| uint8_t *colorinfo_ptr; |
| int side_data_size = 0; |
| int ret, colorinfo_size; |
| const uint8_t *side_data = av_stream_get_side_data( |
| st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA, &side_data_size); |
| |
| ret = avio_open_dyn_buf(&dyn_cp); |
| if (ret < 0) |
| return ret; |
| |
| if (par->color_trc != AVCOL_TRC_UNSPECIFIED && |
| par->color_trc < AVCOL_TRC_NB) { |
| put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORTRANSFERCHARACTERISTICS, |
| par->color_trc); |
| } |
| if (par->color_space != AVCOL_SPC_UNSPECIFIED && |
| par->color_space < AVCOL_SPC_NB) { |
| put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORMATRIXCOEFF, par->color_space); |
| } |
| if (par->color_primaries != AVCOL_PRI_UNSPECIFIED && |
| par->color_primaries < AVCOL_PRI_NB) { |
| put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORPRIMARIES, par->color_primaries); |
| } |
| if (par->color_range != AVCOL_RANGE_UNSPECIFIED && |
| par->color_range < AVCOL_RANGE_NB) { |
| put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORRANGE, par->color_range); |
| } |
| if (side_data_size == sizeof(AVMasteringDisplayMetadata)) { |
| ebml_master meta_element = start_ebml_master( |
| dyn_cp, MATROSKA_ID_VIDEOCOLORMASTERINGMETA, 0); |
| const AVMasteringDisplayMetadata *metadata = |
| (const AVMasteringDisplayMetadata*)side_data; |
| if (metadata->has_primaries) { |
| put_ebml_float(dyn_cp, MATROSKA_ID_VIDEOCOLOR_RX, |
| av_q2d(metadata->display_primaries[0][0])); |
| put_ebml_float(dyn_cp, MATROSKA_ID_VIDEOCOLOR_RY, |
| av_q2d(metadata->display_primaries[0][1])); |
| put_ebml_float(dyn_cp, MATROSKA_ID_VIDEOCOLOR_GX, |
| av_q2d(metadata->display_primaries[1][0])); |
| put_ebml_float(dyn_cp, MATROSKA_ID_VIDEOCOLOR_GY, |
| av_q2d(metadata->display_primaries[1][1])); |
| put_ebml_float(dyn_cp, MATROSKA_ID_VIDEOCOLOR_BX, |
| av_q2d(metadata->display_primaries[2][0])); |
| put_ebml_float(dyn_cp, MATROSKA_ID_VIDEOCOLOR_BY, |
| av_q2d(metadata->display_primaries[2][1])); |
| put_ebml_float(dyn_cp, MATROSKA_ID_VIDEOCOLOR_WHITEX, |
| av_q2d(metadata->white_point[0])); |
| put_ebml_float(dyn_cp, MATROSKA_ID_VIDEOCOLOR_WHITEY, |
| av_q2d(metadata->white_point[1])); |
| } |
| if (metadata->has_luminance) { |
| put_ebml_float(dyn_cp, MATROSKA_ID_VIDEOCOLOR_LUMINANCEMAX, |
| av_q2d(metadata->max_luminance)); |
| put_ebml_float(dyn_cp, MATROSKA_ID_VIDEOCOLOR_LUMINANCEMIN, |
| av_q2d(metadata->min_luminance)); |
| } |
| end_ebml_master(dyn_cp, meta_element); |
| } |
| |
| colorinfo_size = avio_close_dyn_buf(dyn_cp, &colorinfo_ptr); |
| if (colorinfo_size) { |
| ebml_master colorinfo = start_ebml_master(pb, MATROSKA_ID_VIDEOCOLOR, 0); |
| avio_write(pb, colorinfo_ptr, colorinfo_size); |
| end_ebml_master(pb, colorinfo); |
| } |
| av_free(colorinfo_ptr); |
| return 0; |
| } |
| |
| static void mkv_write_field_order(AVIOContext *pb, int mode, |
| enum AVFieldOrder field_order) |
| { |
| switch (field_order) { |
| case AV_FIELD_UNKNOWN: |
| break; |
| case AV_FIELD_PROGRESSIVE: |
| put_ebml_uint(pb, MATROSKA_ID_VIDEOFLAGINTERLACED, |
| MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE); |
| break; |
| case AV_FIELD_TT: |
| case AV_FIELD_BB: |
| case AV_FIELD_TB: |
| case AV_FIELD_BT: |
| put_ebml_uint(pb, MATROSKA_ID_VIDEOFLAGINTERLACED, |
| MATROSKA_VIDEO_INTERLACE_FLAG_INTERLACED); |
| if (mode != MODE_WEBM) { |
| switch (field_order) { |
| case AV_FIELD_TT: |
| put_ebml_uint(pb, MATROSKA_ID_VIDEOFIELDORDER, |
| MATROSKA_VIDEO_FIELDORDER_TT); |
| break; |
| case AV_FIELD_BB: |
| put_ebml_uint(pb, MATROSKA_ID_VIDEOFIELDORDER, |
| MATROSKA_VIDEO_FIELDORDER_BB); |
| break; |
| case AV_FIELD_TB: |
| put_ebml_uint(pb, MATROSKA_ID_VIDEOFIELDORDER, |
| MATROSKA_VIDEO_FIELDORDER_TB); |
| break; |
| case AV_FIELD_BT: |
| put_ebml_uint(pb, MATROSKA_ID_VIDEOFIELDORDER, |
| MATROSKA_VIDEO_FIELDORDER_BT); |
| break; |
| } |
| } |
| } |
| } |
| |
| static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb, |
| AVStream *st, int mode, int *h_width, int *h_height) |
| { |
| int i; |
| int ret = 0; |
| AVDictionaryEntry *tag; |
| MatroskaVideoStereoModeType format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB; |
| |
| *h_width = 1; |
| *h_height = 1; |
| // convert metadata into proper side data and add it to the stream |
| if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) || |
| (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) { |
| int stereo_mode = atoi(tag->value); |
| |
| for (i=0; i<MATROSKA_VIDEO_STEREOMODE_TYPE_NB; i++) |
| if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){ |
| stereo_mode = i; |
| break; |
| } |
| |
| if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB && |
| stereo_mode != 10 && stereo_mode != 12) { |
| int ret = ff_mkv_stereo3d_conv(st, stereo_mode); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| // iterate to find the stereo3d side data |
| for (i = 0; i < st->nb_side_data; i++) { |
| AVPacketSideData sd = st->side_data[i]; |
| if (sd.type == AV_PKT_DATA_STEREO3D) { |
| AVStereo3D *stereo = (AVStereo3D *)sd.data; |
| |
| switch (stereo->type) { |
| case AV_STEREO3D_2D: |
| format = MATROSKA_VIDEO_STEREOMODE_TYPE_MONO; |
| break; |
| case AV_STEREO3D_SIDEBYSIDE: |
| format = (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
| ? MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT |
| : MATROSKA_VIDEO_STEREOMODE_TYPE_LEFT_RIGHT; |
| *h_width = 2; |
| break; |
| case AV_STEREO3D_TOPBOTTOM: |
| format = MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM; |
| if (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
| format--; |
| *h_height = 2; |
| break; |
| case AV_STEREO3D_CHECKERBOARD: |
| format = MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_LR; |
| if (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
| format--; |
| break; |
| case AV_STEREO3D_LINES: |
| format = MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_LR; |
| if (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
| format--; |
| *h_height = 2; |
| break; |
| case AV_STEREO3D_COLUMNS: |
| format = MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_LR; |
| if (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
| format--; |
| *h_width = 2; |
| break; |
| case AV_STEREO3D_FRAMESEQUENCE: |
| format = MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_LR; |
| if (stereo->flags & AV_STEREO3D_FLAG_INVERT) |
| format++; |
| break; |
| } |
| break; |
| } |
| } |
| |
| if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB) |
| return ret; |
| |
| // if webm, do not write unsupported modes |
| if ((mode == MODE_WEBM && |
| format > MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM && |
| format != MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT) |
| || format >= MATROSKA_VIDEO_STEREOMODE_TYPE_NB) { |
| av_log(s, AV_LOG_ERROR, |
| "The specified stereo mode is not valid.\n"); |
| format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB; |
| return AVERROR(EINVAL); |
| } |
| |
| // write StereoMode if format is valid |
| put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, format); |
| |
| return ret; |
| } |
| |
| static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, |
| int i, AVIOContext *pb, int default_stream_exists) |
| { |
| AVStream *st = s->streams[i]; |
| AVCodecParameters *par = st->codecpar; |
| ebml_master subinfo, track; |
| int native_id = 0; |
| int qt_id = 0; |
| int bit_depth = av_get_bits_per_sample(par->codec_id); |
| int sample_rate = par->sample_rate; |
| int output_sample_rate = 0; |
| int display_width_div = 1; |
| int display_height_div = 1; |
| int j, ret; |
| AVDictionaryEntry *tag; |
| |
| if (par->codec_type == AVMEDIA_TYPE_ATTACHMENT) { |
| mkv->have_attachments = 1; |
| return 0; |
| } |
| |
| if (par->codec_type == AVMEDIA_TYPE_AUDIO) { |
| if (!bit_depth && par->codec_id != AV_CODEC_ID_ADPCM_G726) { |
| if (par->bits_per_raw_sample) |
| bit_depth = par->bits_per_raw_sample; |
| else |
| bit_depth = av_get_bytes_per_sample(par->format) << 3; |
| } |
| if (!bit_depth) |
| bit_depth = par->bits_per_coded_sample; |
| } |
| |
| if (par->codec_id == AV_CODEC_ID_AAC) { |
| ret = get_aac_sample_rates(s, par, &sample_rate, &output_sample_rate); |
| if (ret < 0) |
| return ret; |
| } |
| |
| track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0); |
| put_ebml_uint (pb, MATROSKA_ID_TRACKNUMBER, |
| mkv->is_dash ? mkv->dash_track_number : i + 1); |
| put_ebml_uint (pb, MATROSKA_ID_TRACKUID, |
| mkv->is_dash ? mkv->dash_track_number : 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); |
| if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) { |
| put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag && tag->value ? tag->value:"und"); |
| } else if (tag && tag->value) { |
| put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag->value); |
| } |
| |
| // The default value for TRACKFLAGDEFAULT is 1, so add element |
| // if we need to clear it. |
| if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT)) |
| 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); |
| |
| if (mkv->mode == MODE_WEBM && par->codec_id == AV_CODEC_ID_WEBVTT) { |
| const char *codec_id; |
| if (st->disposition & AV_DISPOSITION_CAPTIONS) { |
| codec_id = "D_WEBVTT/CAPTIONS"; |
| native_id = MATROSKA_TRACK_TYPE_SUBTITLE; |
| } else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) { |
| codec_id = "D_WEBVTT/DESCRIPTIONS"; |
| native_id = MATROSKA_TRACK_TYPE_METADATA; |
| } else if (st->disposition & AV_DISPOSITION_METADATA) { |
| codec_id = "D_WEBVTT/METADATA"; |
| native_id = MATROSKA_TRACK_TYPE_METADATA; |
| } else { |
| codec_id = "D_WEBVTT/SUBTITLES"; |
| native_id = MATROSKA_TRACK_TYPE_SUBTITLE; |
| } |
| put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id); |
| } else { |
| // 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 == par->codec_id) { |
| put_ebml_string(pb, MATROSKA_ID_CODECID, ff_mkv_codec_tags[j].str); |
| native_id = 1; |
| break; |
| } |
| } |
| if (par->codec_id == AV_CODEC_ID_RAWVIDEO && !par->codec_tag) { |
| if (mkv->allow_raw_vfw) { |
| native_id = 0; |
| } else { |
| av_log(s, AV_LOG_ERROR, "Raw RGB is not supported Natively in Matroska, you can use AVI or NUT or\n" |
| "If you would like to store it anyway using VFW mode, enable allow_raw_vfw (-allow_raw_vfw 1)\n"); |
| return AVERROR(EINVAL); |
| } |
| } |
| } |
| |
| if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->initial_padding && par->codec_id == AV_CODEC_ID_OPUS) { |
| int64_t codecdelay = av_rescale_q(par->initial_padding, |
| (AVRational){ 1, 48000 }, |
| (AVRational){ 1, 1000000000 }); |
| if (codecdelay < 0) { |
| av_log(s, AV_LOG_ERROR, "Initial padding is invalid\n"); |
| return AVERROR(EINVAL); |
| } |
| // mkv->tracks[i].ts_offset = av_rescale_q(par->initial_padding, |
| // (AVRational){ 1, par->sample_rate }, |
| // st->time_base); |
| |
| put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, codecdelay); |
| } |
| if (par->codec_id == AV_CODEC_ID_OPUS) { |
| put_ebml_uint(pb, MATROSKA_ID_SEEKPREROLL, OPUS_SEEK_PREROLL); |
| } |
| |
| if (mkv->mode == MODE_WEBM && !(par->codec_id == AV_CODEC_ID_VP8 || |
| par->codec_id == AV_CODEC_ID_VP9 || |
| par->codec_id == AV_CODEC_ID_OPUS || |
| par->codec_id == AV_CODEC_ID_VORBIS || |
| par->codec_id == AV_CODEC_ID_WEBVTT)) { |
| av_log(s, AV_LOG_ERROR, |
| "Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| switch (par->codec_type) { |
| case AVMEDIA_TYPE_VIDEO: |
| mkv->have_video = 1; |
| put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO); |
| |
| if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0 |
| && av_cmp_q(av_inv_q(st->avg_frame_rate), st->time_base) > 0) |
| put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->avg_frame_rate.den / st->avg_frame_rate.num); |
| else |
| put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->time_base.num / st->time_base.den); |
| |
| if (!native_id && |
| ff_codec_get_tag(ff_codec_movvideo_tags, par->codec_id) && |
| ((!ff_codec_get_tag(ff_codec_bmp_tags, par->codec_id) && par->codec_id != AV_CODEC_ID_RAWVIDEO) || |
| par->codec_id == AV_CODEC_ID_SVQ1 || |
| par->codec_id == AV_CODEC_ID_SVQ3 || |
| par->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; |
| s->internal->avoid_negative_ts_use_pts = 0; |
| } |
| |
| subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0); |
| |
| put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , par->width); |
| put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, par->height); |
| |
| mkv_write_field_order(pb, mkv->mode, par->field_order); |
| |
| // check both side data and metadata for stereo information, |
| // write the result to the bitstream if any is found |
| ret = mkv_write_stereo_mode(s, pb, st, mkv->mode, |
| &display_width_div, |
| &display_height_div); |
| if (ret < 0) |
| return ret; |
| |
| if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) || |
| ((tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) || |
| (par->format == AV_PIX_FMT_YUVA420P)) { |
| put_ebml_uint(pb, MATROSKA_ID_VIDEOALPHAMODE, 1); |
| } |
| |
| // write DisplayWidth and DisplayHeight, they contain the size of |
| // a single source view and/or the display aspect ratio |
| if (st->sample_aspect_ratio.num) { |
| int64_t d_width = av_rescale(par->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); |
| } |
| if (d_width != par->width || display_width_div != 1 || display_height_div != 1) { |
| put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div); |
| put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div); |
| } |
| } else if (display_width_div != 1 || display_height_div != 1) { |
| put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , par->width / display_width_div); |
| put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div); |
| } else if (mkv->mode != MODE_WEBM) |
| put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYUNIT, MATROSKA_VIDEO_DISPLAYUNIT_UNKNOWN); |
| |
| if (par->codec_id == AV_CODEC_ID_RAWVIDEO) { |
| uint32_t color_space = av_le2ne32(par->codec_tag); |
| put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space)); |
| } |
| if (s->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) { |
| ret = mkv_write_video_color(pb, par, st); |
| if (ret < 0) |
| return ret; |
| } |
| 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 , par->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: |
| if (!native_id) { |
| av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", par->codec_id); |
| return AVERROR(ENOSYS); |
| } |
| |
| if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) |
| native_id = MATROSKA_TRACK_TYPE_SUBTITLE; |
| |
| put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id); |
| break; |
| default: |
| av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) { |
| ret = mkv_write_codecprivate(s, pb, par, native_id, qt_id); |
| if (ret < 0) |
| return ret; |
| } |
| |
| end_ebml_master(pb, track); |
| |
| return 0; |
| } |
| |
| static int mkv_write_tracks(AVFormatContext *s) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| AVIOContext *dyn_cp, *pb = s->pb; |
| ebml_master tracks; |
| int i, ret, default_stream_exists = 0; |
| |
| ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TRACKS, avio_tell(pb)); |
| if (ret < 0) |
| return ret; |
| |
| ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &tracks, MATROSKA_ID_TRACKS, 0); |
| if (ret < 0) |
| return ret; |
| |
| 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++) { |
| ret = mkv_write_track(s, mkv, i, dyn_cp, default_stream_exists); |
| if (ret < 0) |
| return ret; |
| } |
| end_ebml_master_crc32(pb, &dyn_cp, mkv, tracks); |
| return 0; |
| } |
| |
| static int mkv_write_chapters(AVFormatContext *s) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| AVIOContext *dyn_cp, *pb = s->pb; |
| ebml_master chapters, editionentry; |
| AVRational scale = {1, 1E9}; |
| int i, ret; |
| |
| if (!s->nb_chapters || mkv->wrote_chapters) |
| return 0; |
| |
| ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CHAPTERS, avio_tell(pb)); |
| if (ret < 0) return ret; |
| |
| ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &chapters, MATROSKA_ID_CHAPTERS, 0); |
| if (ret < 0) return ret; |
| |
| editionentry = start_ebml_master(dyn_cp, MATROSKA_ID_EDITIONENTRY, 0); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_EDITIONFLAGDEFAULT, 1); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_EDITIONFLAGHIDDEN , 0); |
| for (i = 0; i < s->nb_chapters; i++) { |
| ebml_master chapteratom, chapterdisplay; |
| AVChapter *c = s->chapters[i]; |
| int64_t chapterstart = av_rescale_q(c->start, c->time_base, scale); |
| int64_t chapterend = av_rescale_q(c->end, c->time_base, scale); |
| AVDictionaryEntry *t = NULL; |
| if (chapterstart < 0 || chapterstart > chapterend || chapterend < 0) { |
| av_log(s, AV_LOG_ERROR, |
| "Invalid chapter start (%"PRId64") or end (%"PRId64").\n", |
| chapterstart, chapterend); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| chapteratom = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERATOM, 0); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERUID, c->id + mkv->chapter_id_offset); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMESTART, chapterstart); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMEEND, chapterend); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERFLAGHIDDEN , 0); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERFLAGENABLED, 1); |
| if ((t = av_dict_get(c->metadata, "title", NULL, 0))) { |
| chapterdisplay = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERDISPLAY, 0); |
| put_ebml_string(dyn_cp, MATROSKA_ID_CHAPSTRING, t->value); |
| put_ebml_string(dyn_cp, MATROSKA_ID_CHAPLANG , "und"); |
| end_ebml_master(dyn_cp, chapterdisplay); |
| } |
| end_ebml_master(dyn_cp, chapteratom); |
| } |
| end_ebml_master(dyn_cp, editionentry); |
| end_ebml_master_crc32(pb, &dyn_cp, mkv, chapters); |
| |
| mkv->wrote_chapters = 1; |
| return 0; |
| } |
| |
| static int 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 (!key) |
| return AVERROR(ENOMEM); |
| |
| if ((p = strrchr(p, '-')) && |
| (lang = ff_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); |
| return 0; |
| } |
| |
| static int mkv_write_tag_targets(AVFormatContext *s, |
| unsigned int elementid, unsigned int uid, |
| ebml_master *tags, ebml_master* tag) |
| { |
| AVIOContext *pb; |
| MatroskaMuxContext *mkv = s->priv_data; |
| ebml_master targets; |
| 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; |
| |
| start_ebml_master_crc32(s->pb, &mkv->tags_bc, mkv, tags, MATROSKA_ID_TAGS, 0); |
| } |
| pb = mkv->tags_bc; |
| |
| *tag = start_ebml_master(pb, MATROSKA_ID_TAG, 0); |
| targets = start_ebml_master(pb, MATROSKA_ID_TAGTARGETS, 0); |
| if (elementid) |
| put_ebml_uint(pb, elementid, uid); |
| end_ebml_master(pb, targets); |
| return 0; |
| } |
| |
| static int mkv_check_tag_name(const char *name, unsigned int elementid) |
| { |
| return av_strcasecmp(name, "title") && |
| av_strcasecmp(name, "stereo_mode") && |
| av_strcasecmp(name, "creation_time") && |
| av_strcasecmp(name, "encoding_tool") && |
| av_strcasecmp(name, "duration") && |
| (elementid != MATROSKA_ID_TAGTARGETS_TRACKUID || |
| av_strcasecmp(name, "language")) && |
| (elementid != MATROSKA_ID_TAGTARGETS_ATTACHUID || |
| (av_strcasecmp(name, "filename") && |
| av_strcasecmp(name, "mimetype"))); |
| } |
| |
| 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; |
| int ret; |
| AVDictionaryEntry *t = NULL; |
| |
| ret = mkv_write_tag_targets(s, elementid, uid, tags, &tag); |
| if (ret < 0) |
| return ret; |
| |
| while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) { |
| if (mkv_check_tag_name(t->key, elementid)) { |
| ret = mkv_write_simpletag(mkv->tags_bc, t); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| end_ebml_master(mkv->tags_bc, tag); |
| return 0; |
| } |
| |
| static int mkv_check_tag(AVDictionary *m, unsigned int elementid) |
| { |
| AVDictionaryEntry *t = NULL; |
| |
| while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) |
| if (mkv_check_tag_name(t->key, elementid)) |
| return 1; |
| |
| return 0; |
| } |
| |
| static int mkv_write_tags(AVFormatContext *s) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| int i, ret; |
| |
| ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL); |
| |
| if (mkv_check_tag(s->metadata, 0)) { |
| ret = mkv_write_tag(s, s->metadata, 0, 0, &mkv->tags); |
| if (ret < 0) return ret; |
| } |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| AVStream *st = s->streams[i]; |
| |
| if (st->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT) |
| continue; |
| |
| if (!mkv_check_tag(st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID)) |
| continue; |
| |
| ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &mkv->tags); |
| if (ret < 0) return ret; |
| } |
| |
| if (s->pb->seekable && !mkv->is_live) { |
| for (i = 0; i < s->nb_streams; i++) { |
| AVIOContext *pb; |
| AVStream *st = s->streams[i]; |
| ebml_master tag_target; |
| ebml_master tag; |
| |
| if (st->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT) |
| continue; |
| |
| mkv_write_tag_targets(s, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &mkv->tags, &tag_target); |
| pb = mkv->tags_bc; |
| |
| tag = start_ebml_master(pb, MATROSKA_ID_SIMPLETAG, 0); |
| put_ebml_string(pb, MATROSKA_ID_TAGNAME, "DURATION"); |
| mkv->stream_duration_offsets[i] = avio_tell(pb); |
| |
| // Reserve space to write duration as a 20-byte string. |
| // 2 (ebml id) + 1 (data size) + 20 (data) |
| put_ebml_void(pb, 23); |
| end_ebml_master(pb, tag); |
| end_ebml_master(pb, tag_target); |
| } |
| } |
| |
| for (i = 0; i < s->nb_chapters; i++) { |
| AVChapter *ch = s->chapters[i]; |
| |
| if (!mkv_check_tag(ch->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID)) |
| continue; |
| |
| ret = mkv_write_tag(s, ch->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID, ch->id + mkv->chapter_id_offset, &mkv->tags); |
| if (ret < 0) return ret; |
| } |
| |
| if (mkv->have_attachments) { |
| for (i = 0; i < mkv->attachments->num_entries; i++) { |
| mkv_attachment *attachment = &mkv->attachments->entries[i]; |
| AVStream *st = s->streams[attachment->stream_idx]; |
| |
| if (!mkv_check_tag(st->metadata, MATROSKA_ID_TAGTARGETS_ATTACHUID)) |
| continue; |
| |
| ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_ATTACHUID, attachment->fileuid, &mkv->tags); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| if (mkv->tags.pos) { |
| if (s->pb->seekable && !mkv->is_live) |
| put_ebml_void(s->pb, avio_tell(mkv->tags_bc)); |
| else |
| end_ebml_master_crc32(s->pb, &mkv->tags_bc, mkv, mkv->tags); |
| } |
| return 0; |
| } |
| |
| static int mkv_write_attachments(AVFormatContext *s) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| AVIOContext *dyn_cp, *pb = s->pb; |
| ebml_master attachments; |
| AVLFG c; |
| int i, ret; |
| |
| if (!mkv->have_attachments) |
| return 0; |
| |
| mkv->attachments = av_mallocz(sizeof(*mkv->attachments)); |
| if (!mkv->attachments) |
| return ret; |
| |
| 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; |
| |
| ret = start_ebml_master_crc32(pb, &dyn_cp, mkv, &attachments, MATROSKA_ID_ATTACHMENTS, 0); |
| if (ret < 0) return ret; |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| AVStream *st = s->streams[i]; |
| ebml_master attached_file; |
| mkv_attachment *attachment = mkv->attachments->entries; |
| AVDictionaryEntry *t; |
| const char *mimetype = NULL; |
| uint32_t fileuid; |
| |
| if (st->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT) |
| continue; |
| |
| attachment = av_realloc_array(attachment, mkv->attachments->num_entries + 1, sizeof(mkv_attachment)); |
| if (!attachment) |
| return AVERROR(ENOMEM); |
| mkv->attachments->entries = attachment; |
| |
| attached_file = start_ebml_master(dyn_cp, MATROSKA_ID_ATTACHEDFILE, 0); |
| |
| if (t = av_dict_get(st->metadata, "title", NULL, 0)) |
| put_ebml_string(dyn_cp, 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(dyn_cp, MATROSKA_ID_FILENAME, t->value); |
| if (t = av_dict_get(st->metadata, "mimetype", NULL, 0)) |
| mimetype = t->value; |
| else if (st->codecpar->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->codecpar->codec_id) { |
| mimetype = ff_mkv_mime_tags[i].str; |
| break; |
| } |
| for (i = 0; ff_mkv_image_mime_tags[i].id != AV_CODEC_ID_NONE; i++) |
| if (ff_mkv_image_mime_tags[i].id == st->codecpar->codec_id) { |
| mimetype = ff_mkv_image_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 (s->flags & AVFMT_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->codecpar->extradata, st->codecpar->extradata_size); |
| av_sha_final(sha, digest); |
| av_free(sha); |
| fileuid = AV_RL32(digest); |
| } else { |
| fileuid = av_lfg_get(&c); |
| } |
| av_log(s, AV_LOG_VERBOSE, "Using %.8"PRIx32" for attachment %d\n", |
| fileuid, mkv->attachments->num_entries); |
| |
| put_ebml_string(dyn_cp, MATROSKA_ID_FILEMIMETYPE, mimetype); |
| put_ebml_binary(dyn_cp, MATROSKA_ID_FILEDATA, st->codecpar->extradata, st->codecpar->extradata_size); |
| put_ebml_uint(dyn_cp, MATROSKA_ID_FILEUID, fileuid); |
| end_ebml_master(dyn_cp, attached_file); |
| |
| mkv->attachments->entries[mkv->attachments->num_entries].stream_idx = i; |
| mkv->attachments->entries[mkv->attachments->num_entries++].fileuid = fileuid; |
| } |
| end_ebml_master_crc32(pb, &dyn_cp, mkv, attachments); |
| |
| return 0; |
| } |
| |
| static int64_t get_metadata_duration(AVFormatContext *s) |
| { |
| int i = 0; |
| int64_t max = 0; |
| int64_t us; |
| |
| AVDictionaryEntry *explicitDuration = av_dict_get(s->metadata, "DURATION", NULL, 0); |
| if (explicitDuration && (av_parse_time(&us, explicitDuration->value, 1) == 0) && us > 0) { |
| av_log(s, AV_LOG_DEBUG, "get_metadata_duration found duration in context metadata: %" PRId64 "\n", us); |
| return us; |
| } |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| int64_t us; |
| AVDictionaryEntry *duration = av_dict_get(s->streams[i]->metadata, "DURATION", NULL, 0); |
| |
| if (duration && (av_parse_time(&us, duration->value, 1) == 0)) |
| max = FFMAX(max, us); |
| } |
| |
| av_log(s, AV_LOG_DEBUG, "get_metadata_duration returned: %" PRId64 "\n", max); |
| return max; |
| } |
| |
| static int mkv_write_header(AVFormatContext *s) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| AVIOContext *pb = s->pb; |
| ebml_master ebml_header; |
| AVDictionaryEntry *tag; |
| int ret, i, version = 2; |
| int64_t creation_time; |
| |
| if (!strcmp(s->oformat->name, "webm")) |
| mkv->mode = MODE_WEBM; |
| else |
| mkv->mode = MODE_MATROSKAv2; |
| |
| if (mkv->mode != MODE_WEBM || |
| av_dict_get(s->metadata, "stereo_mode", NULL, 0) || |
| av_dict_get(s->metadata, "alpha_mode", NULL, 0)) |
| version = 4; |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_ATRAC3 || |
| s->streams[i]->codecpar->codec_id == AV_CODEC_ID_COOK || |
| s->streams[i]->codecpar->codec_id == AV_CODEC_ID_RA_288 || |
| s->streams[i]->codecpar->codec_id == AV_CODEC_ID_SIPR || |
| s->streams[i]->codecpar->codec_id == AV_CODEC_ID_RV10 || |
| s->streams[i]->codecpar->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]->codecpar->codec_id)); |
| return AVERROR_PATCHWELCOME; |
| } |
| if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_OPUS || |
| av_dict_get(s->streams[i]->metadata, "stereo_mode", NULL, 0) || |
| av_dict_get(s->streams[i]->metadata, "alpha_mode", NULL, 0)) |
| version = 4; |
| } |
| |
| mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks)); |
| if (!mkv->tracks) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| 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 , version); |
| 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) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_INFO, avio_tell(pb)); |
| if (ret < 0) goto fail; |
| |
| ret = start_ebml_master_crc32(pb, &mkv->info_bc, mkv, &mkv->info, MATROSKA_ID_INFO, 0); |
| if (ret < 0) |
| return ret; |
| pb = mkv->info_bc; |
| |
| 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->flags & AVFMT_FLAG_BITEXACT)) { |
| put_ebml_string(pb, MATROSKA_ID_MUXINGAPP, LIBAVFORMAT_IDENT); |
| if ((tag = av_dict_get(s->metadata, "encoding_tool", NULL, 0))) |
| put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, tag->value); |
| else |
| put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, LIBAVFORMAT_IDENT); |
| |
| if (mkv->mode != MODE_WEBM) { |
| 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_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16); |
| } |
| } else { |
| const char *ident = "Lavf"; |
| put_ebml_string(pb, MATROSKA_ID_MUXINGAPP , ident); |
| put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, ident); |
| } |
| |
| if (ff_parse_creation_time_metadata(s, &creation_time, 0) > 0) { |
| // Adjust time so it's relative to 2001-01-01 and convert to nanoseconds. |
| int64_t date_utc = (creation_time - 978307200000000LL) * 1000; |
| 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); |
| if (!mkv->is_live) { |
| int64_t metadata_duration = get_metadata_duration(s); |
| |
| if (s->duration > 0) { |
| int64_t scaledDuration = av_rescale(s->duration, 1000, AV_TIME_BASE); |
| put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration); |
| av_log(s, AV_LOG_DEBUG, "Write early duration from recording time = %" PRIu64 "\n", scaledDuration); |
| } else if (metadata_duration > 0) { |
| int64_t scaledDuration = av_rescale(metadata_duration, 1000, AV_TIME_BASE); |
| put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration); |
| av_log(s, AV_LOG_DEBUG, "Write early duration from metadata = %" PRIu64 "\n", scaledDuration); |
| } else { |
| put_ebml_void(pb, 11); // assumes double-precision float to be written |
| } |
| } |
| if (s->pb->seekable) |
| put_ebml_void(s->pb, avio_tell(pb)); |
| else |
| end_ebml_master_crc32(s->pb, &mkv->info_bc, mkv, mkv->info); |
| pb = s->pb; |
| |
| // initialize stream_duration fields |
| mkv->stream_durations = av_mallocz(s->nb_streams * sizeof(int64_t)); |
| mkv->stream_duration_offsets = av_mallocz(s->nb_streams * sizeof(int64_t)); |
| |
| ret = mkv_write_tracks(s); |
| if (ret < 0) |
| goto fail; |
| |
| for (i = 0; i < s->nb_chapters; i++) |
| mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id); |
| |
| if (mkv->mode != MODE_WEBM) { |
| ret = mkv_write_chapters(s); |
| if (ret < 0) |
| goto fail; |
| |
| ret = mkv_write_attachments(s); |
| if (ret < 0) |
| goto fail; |
| |
| ret = mkv_write_tags(s); |
| if (ret < 0) |
| goto fail; |
| } |
| |
| if (!s->pb->seekable && !mkv->is_live) |
| mkv_write_seekhead(pb, mkv); |
| |
| mkv->cues = mkv_start_cues(mkv->segment_offset); |
| if (!mkv->cues) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| if (pb->seekable && mkv->reserve_cues_space) { |
| mkv->cues_pos = avio_tell(pb); |
| put_ebml_void(pb, mkv->reserve_cues_space); |
| } |
| |
| av_init_packet(&mkv->cur_audio_pkt); |
| mkv->cur_audio_pkt.size = 0; |
| mkv->cluster_pos = -1; |
| |
| avio_flush(pb); |
| |
| // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or |
| // after 4k and on a keyframe |
| if (pb->seekable) { |
| if (mkv->cluster_time_limit < 0) |
| mkv->cluster_time_limit = 5000; |
| if (mkv->cluster_size_limit < 0) |
| mkv->cluster_size_limit = 5 * 1024 * 1024; |
| } else { |
| if (mkv->cluster_time_limit < 0) |
| mkv->cluster_time_limit = 1000; |
| if (mkv->cluster_size_limit < 0) |
| mkv->cluster_size_limit = 32 * 1024; |
| } |
| |
| return 0; |
| fail: |
| mkv_free(mkv); |
| return ret; |
| } |
| |
| 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 mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size) |
| { |
| uint8_t *dst; |
| int srclen = *size; |
| int offset = 0; |
| int ret; |
| |
| dst = av_malloc(srclen); |
| if (!dst) |
| return AVERROR(ENOMEM); |
| |
| while (srclen >= WV_HEADER_SIZE) { |
| WvHeader header; |
| |
| ret = ff_wv_parse_header(&header, src); |
| if (ret < 0) |
| goto fail; |
| src += WV_HEADER_SIZE; |
| srclen -= WV_HEADER_SIZE; |
| |
| if (srclen < header.blocksize) { |
| ret = AVERROR_INVALIDDATA; |
| goto fail; |
| } |
| |
| if (header.initial) { |
| AV_WL32(dst + offset, header.samples); |
| offset += 4; |
| } |
| AV_WL32(dst + offset, header.flags); |
| AV_WL32(dst + offset + 4, header.crc); |
| offset += 8; |
| |
| if (!(header.initial && header.final)) { |
| AV_WL32(dst + offset, header.blocksize); |
| offset += 4; |
| } |
| |
| memcpy(dst + offset, src, header.blocksize); |
| src += header.blocksize; |
| srclen -= header.blocksize; |
| offset += header.blocksize; |
| } |
| |
| *pdst = dst; |
| *size = offset; |
| |
| return 0; |
| fail: |
| av_freep(&dst); |
| return ret; |
| } |
| |
| static void mkv_write_block(AVFormatContext *s, AVIOContext *pb, |
| unsigned int blockid, AVPacket *pkt, int keyframe) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar; |
| uint8_t *data = NULL, *side_data = NULL; |
| int offset = 0, size = pkt->size, side_data_size = 0; |
| int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts; |
| uint64_t additional_id = 0; |
| int64_t discard_padding = 0; |
| uint8_t track_number = (mkv->is_dash ? mkv->dash_track_number : (pkt->stream_index + 1)); |
| ebml_master block_group, block_additions, block_more; |
| |
| av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, " |
| "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", keyframe %d\n", |
| avio_tell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration, |
| keyframe != 0); |
| if (par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 0 && |
| (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1)) |
| ff_avc_parse_nal_units_buf(pkt->data, &data, &size); |
| else if (par->codec_id == AV_CODEC_ID_HEVC && par->extradata_size > 6 && |
| (AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1)) |
| /* extradata is Annex B, assume the bitstream is too and convert it */ |
| ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL); |
| else if (par->codec_id == AV_CODEC_ID_WAVPACK) { |
| int ret = mkv_strip_wavpack(pkt->data, &data, &size); |
| if (ret < 0) { |
| av_log(s, AV_LOG_ERROR, "Error stripping a WavPack packet.\n"); |
| return; |
| } |
| } else |
| data = pkt->data; |
| |
| if (par->codec_id == AV_CODEC_ID_PRORES && size >= 8) { |
| /* Matroska specification requires to remove the first QuickTime atom |
| */ |
| size -= 8; |
| offset = 8; |
| } |
| |
| side_data = av_packet_get_side_data(pkt, |
| AV_PKT_DATA_SKIP_SAMPLES, |
| &side_data_size); |
| |
| if (side_data && side_data_size >= 10) { |
| discard_padding = av_rescale_q(AV_RL32(side_data + 4), |
| (AVRational){1, par->sample_rate}, |
| (AVRational){1, 1000000000}); |
| } |
| |
| side_data = av_packet_get_side_data(pkt, |
| AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL, |
| &side_data_size); |
| if (side_data) { |
| additional_id = AV_RB64(side_data); |
| side_data += 8; |
| side_data_size -= 8; |
| } |
| |
| if ((side_data_size && additional_id == 1) || discard_padding) { |
| block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0); |
| blockid = MATROSKA_ID_BLOCK; |
| } |
| |
| put_ebml_id(pb, blockid); |
| put_ebml_num(pb, size + 4, 0); |
| // this assumes stream_index is less than 126 |
| avio_w8(pb, 0x80 | track_number); |
| avio_wb16(pb, ts - mkv->cluster_pts); |
| avio_w8(pb, (blockid == MATROSKA_ID_SIMPLEBLOCK && keyframe) ? (1 << 7) : 0); |
| avio_write(pb, data + offset, size); |
| if (data != pkt->data) |
| av_free(data); |
| |
| if (blockid == MATROSKA_ID_BLOCK && !keyframe) { |
| put_ebml_sint(pb, MATROSKA_ID_BLOCKREFERENCE, |
| mkv->last_track_timestamp[track_number - 1]); |
| } |
| mkv->last_track_timestamp[track_number - 1] = ts - mkv->cluster_pts; |
| |
| if (discard_padding) { |
| put_ebml_sint(pb, MATROSKA_ID_DISCARDPADDING, discard_padding); |
| } |
| |
| if (side_data_size && additional_id == 1) { |
| block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0); |
| block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0); |
| put_ebml_uint(pb, MATROSKA_ID_BLOCKADDID, 1); |
| put_ebml_id(pb, MATROSKA_ID_BLOCKADDITIONAL); |
| put_ebml_num(pb, side_data_size, 0); |
| avio_write(pb, side_data, side_data_size); |
| end_ebml_master(pb, block_more); |
| end_ebml_master(pb, block_additions); |
| } |
| if ((side_data_size && additional_id == 1) || discard_padding) { |
| end_ebml_master(pb, block_group); |
| } |
| } |
| |
| static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| ebml_master blockgroup; |
| int id_size, settings_size, size; |
| uint8_t *id, *settings; |
| int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts; |
| const int flags = 0; |
| |
| id_size = 0; |
| id = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_IDENTIFIER, |
| &id_size); |
| |
| settings_size = 0; |
| settings = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_SETTINGS, |
| &settings_size); |
| |
| size = id_size + 1 + settings_size + 1 + pkt->size; |
| |
| av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, " |
| "pts %" PRId64 ", dts %" PRId64 ", duration %" PRId64 ", flags %d\n", |
| avio_tell(pb), size, pkt->pts, pkt->dts, pkt->duration, flags); |
| |
| 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, ts - mkv->cluster_pts); |
| avio_w8(pb, flags); |
| avio_printf(pb, "%.*s\n%.*s\n%.*s", id_size, id, settings_size, settings, pkt->size, pkt->data); |
| |
| put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, pkt->duration); |
| end_ebml_master(pb, blockgroup); |
| |
| return pkt->duration; |
| } |
| |
| static void mkv_start_new_cluster(AVFormatContext *s, AVPacket *pkt) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| |
| end_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, mkv->cluster); |
| mkv->cluster_pos = -1; |
| if (s->pb->seekable) |
| av_log(s, AV_LOG_DEBUG, |
| "Starting new cluster at offset %" PRIu64 " bytes, " |
| "pts %" PRIu64 "dts %" PRIu64 "\n", |
| avio_tell(s->pb), pkt->pts, pkt->dts); |
| else |
| av_log(s, AV_LOG_DEBUG, "Starting new cluster, " |
| "pts %" PRIu64 "dts %" PRIu64 "\n", |
| pkt->pts, pkt->dts); |
| avio_flush(s->pb); |
| } |
| |
| static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt, int add_cue) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| AVIOContext *pb = s->pb; |
| AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar; |
| 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; |
| int64_t relative_packet_pos; |
| int dash_tracknum = mkv->is_dash ? mkv->dash_track_number : pkt->stream_index + 1; |
| |
| if (ts == AV_NOPTS_VALUE) { |
| av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n"); |
| return AVERROR(EINVAL); |
| } |
| ts += mkv->tracks[pkt->stream_index].ts_offset; |
| |
| if (mkv->cluster_pos != -1) { |
| int64_t cluster_time = ts - mkv->cluster_pts + mkv->tracks[pkt->stream_index].ts_offset; |
| if ((int16_t)cluster_time != cluster_time) { |
| av_log(s, AV_LOG_WARNING, "Starting new cluster due to timestamp\n"); |
| mkv_start_new_cluster(s, pkt); |
| } |
| } |
| |
| if (mkv->cluster_pos == -1) { |
| mkv->cluster_pos = avio_tell(s->pb); |
| ret = start_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, &mkv->cluster, MATROSKA_ID_CLUSTER, 0); |
| if (ret < 0) |
| return ret; |
| put_ebml_uint(mkv->dyn_bc, MATROSKA_ID_CLUSTERTIMECODE, FFMAX(0, ts)); |
| mkv->cluster_pts = FFMAX(0, ts); |
| } |
| pb = mkv->dyn_bc; |
| |
| relative_packet_pos = avio_tell(pb); |
| |
| if (par->codec_type != AVMEDIA_TYPE_SUBTITLE) { |
| mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe); |
| if (s->pb->seekable && (par->codec_type == AVMEDIA_TYPE_VIDEO && keyframe || add_cue)) { |
| ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts, mkv->cluster_pos, relative_packet_pos, -1); |
| if (ret < 0) return ret; |
| } |
| } else { |
| if (par->codec_id == AV_CODEC_ID_WEBVTT) { |
| duration = mkv_write_vtt_blocks(s, pb, pkt); |
| } else { |
| ebml_master blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, |
| mkv_blockgroup_size(pkt->size)); |
| |
| #if FF_API_CONVERGENCE_DURATION |
| FF_DISABLE_DEPRECATION_WARNINGS |
| /* For backward compatibility, prefer convergence_duration. */ |
| if (pkt->convergence_duration > 0) { |
| duration = pkt->convergence_duration; |
| } |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| /* All subtitle blocks are considered to be keyframes. */ |
| mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 1); |
| put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration); |
| end_ebml_master(pb, blockgroup); |
| } |
| |
| if (s->pb->seekable) { |
| ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts, |
| mkv->cluster_pos, relative_packet_pos, duration); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| mkv->duration = FFMAX(mkv->duration, ts + duration); |
| |
| if (mkv->stream_durations) |
| mkv->stream_durations[pkt->stream_index] = |
| FFMAX(mkv->stream_durations[pkt->stream_index], ts + duration); |
| |
| return 0; |
| } |
| |
| static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| int codec_type = s->streams[pkt->stream_index]->codecpar->codec_type; |
| int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY); |
| int cluster_size; |
| int64_t cluster_time; |
| int ret; |
| int start_new_cluster; |
| |
| if (mkv->tracks[pkt->stream_index].write_dts) |
| cluster_time = pkt->dts - mkv->cluster_pts; |
| else |
| cluster_time = pkt->pts - mkv->cluster_pts; |
| cluster_time += mkv->tracks[pkt->stream_index].ts_offset; |
| |
| // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or |
| // after 4k and on a keyframe |
| cluster_size = avio_tell(mkv->dyn_bc); |
| |
| if (mkv->is_dash && codec_type == AVMEDIA_TYPE_VIDEO) { |
| // WebM DASH specification states that the first block of every cluster |
| // has to be a key frame. So for DASH video, we only create a cluster |
| // on seeing key frames. |
| start_new_cluster = keyframe; |
| } else if (mkv->is_dash && codec_type == AVMEDIA_TYPE_AUDIO && |
| (mkv->cluster_pos == -1 || |
| cluster_time > mkv->cluster_time_limit)) { |
| // For DASH audio, we create a Cluster based on cluster_time_limit |
| start_new_cluster = 1; |
| } else if (!mkv->is_dash && |
| (cluster_size > mkv->cluster_size_limit || |
| cluster_time > mkv->cluster_time_limit || |
| (codec_type == AVMEDIA_TYPE_VIDEO && keyframe && |
| cluster_size > 4 * 1024))) { |
| start_new_cluster = 1; |
| } else { |
| start_new_cluster = 0; |
| } |
| |
| if (mkv->cluster_pos != -1 && start_new_cluster) { |
| mkv_start_new_cluster(s, pkt); |
| } |
| |
| if (!mkv->cluster_pos) |
| avio_write_marker(s->pb, |
| av_rescale_q(pkt->dts, s->streams[pkt->stream_index]->time_base, AV_TIME_BASE_Q), |
| keyframe && (mkv->have_video ? codec_type == AVMEDIA_TYPE_VIDEO : 1) ? AVIO_DATA_MARKER_SYNC_POINT : AVIO_DATA_MARKER_BOUNDARY_POINT); |
| |
| // check if we have an audio packet cached |
| if (mkv->cur_audio_pkt.size > 0) { |
| // for DASH audio, a CuePoint has to be added when there is a new cluster. |
| ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt, |
| mkv->is_dash ? start_new_cluster : 0); |
| av_packet_unref(&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_type == AVMEDIA_TYPE_AUDIO) { |
| ret = av_packet_ref(&mkv->cur_audio_pkt, pkt); |
| } else |
| ret = mkv_write_packet_internal(s, pkt, 0); |
| return ret; |
| } |
| |
| static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| MatroskaMuxContext *mkv = s->priv_data; |
| |
| if (!pkt) { |
| if (mkv->cluster_pos != -1) { |
| end_ebml_master_crc32(s->pb, &mkv->dyn_bc, mkv, mkv->cluster); |
| mkv->cluster_pos = -1; |
| if (s->pb->seekable) |
| av_log(s, AV_LOG_DEBUG, |
| "Flushing cluster at offset %" PRIu64 " bytes\n", |
| avio_tell(s->pb)); |
| else |
| av_log(s, AV_LOG_DEBUG, "Flushing cluster\n"); |
| avio_flush(s->pb); |
| } |
| return 1; |
| } |
| return mkv_write_packet(s, pkt); |
| } |
| |
| 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, 0); |
| av_packet_unref(&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_crc32(pb, &mkv->dyn_bc, mkv, mkv->cluster); |
| } |
| |
| if (mkv->mode != MODE_WEBM) { |
| ret = mkv_write_chapters(s); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (pb->seekable) { |
| if (mkv->cues->num_entries) { |
| if (mkv->reserve_cues_space) { |
| int64_t cues_end; |
| |
| currentpos = avio_tell(pb); |
| avio_seek(pb, mkv->cues_pos, SEEK_SET); |
| |
| cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams); |
| cues_end = avio_tell(pb); |
| if (cues_end > cuespos + mkv->reserve_cues_space) { |
| av_log(s, AV_LOG_ERROR, |
| "Insufficient space reserved for cues: %d " |
| "(needed: %" PRId64 ").\n", |
| mkv->reserve_cues_space, cues_end - cuespos); |
| return AVERROR(EINVAL); |
| } |
| |
| if (cues_end < cuespos + mkv->reserve_cues_space) |
| put_ebml_void(pb, mkv->reserve_cues_space - |
| (cues_end - cuespos)); |
| |
| avio_seek(pb, currentpos, SEEK_SET); |
| } else { |
| cuespos = mkv_write_cues(s, 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); |
| |
| // update the duration |
| av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration); |
| currentpos = avio_tell(pb); |
| avio_seek(mkv->info_bc, mkv->duration_offset, SEEK_SET); |
| put_ebml_float(mkv->info_bc, MATROSKA_ID_DURATION, mkv->duration); |
| avio_seek(pb, mkv->info.pos, SEEK_SET); |
| end_ebml_master_crc32(pb, &mkv->info_bc, mkv, mkv->info); |
| |
| // update stream durations |
| if (!mkv->is_live && mkv->stream_durations) { |
| int i; |
| int64_t curr = avio_tell(mkv->tags_bc); |
| for (i = 0; i < s->nb_streams; ++i) { |
| AVStream *st = s->streams[i]; |
| |
| if (mkv->stream_duration_offsets[i] > 0) { |
| double duration_sec = mkv->stream_durations[i] * av_q2d(st->time_base); |
| char duration_string[20] = ""; |
| |
| av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i, |
| mkv->stream_durations[i]); |
| |
| avio_seek(mkv->tags_bc, mkv->stream_duration_offsets[i], SEEK_SET); |
| |
| snprintf(duration_string, 20, "%02d:%02d:%012.9f", |
| (int) duration_sec / 3600, ((int) duration_sec / 60) % 60, |
| fmod(duration_sec, 60)); |
| |
| put_ebml_binary(mkv->tags_bc, MATROSKA_ID_TAGSTRING, duration_string, 20); |
| } |
| } |
| avio_seek(mkv->tags_bc, curr, SEEK_SET); |
| } |
| if (mkv->tags.pos && !mkv->is_live) { |
| avio_seek(pb, mkv->tags.pos, SEEK_SET); |
| end_ebml_master_crc32(pb, &mkv->tags_bc, mkv, mkv->tags); |
| } |
| |
| avio_seek(pb, currentpos, SEEK_SET); |
| } |
| |
| if (!mkv->is_live) { |
| end_ebml_master(pb, mkv->segment); |
| } |
| |
| mkv_free(mkv); |
| 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) { |
| enum AVMediaType type = avcodec_get_type(codec_id); |
| // mkv theoretically supports any video/audio through VFW/ACM |
| if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO) |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static int mkv_init(struct AVFormatContext *s) |
| { |
| int i; |
| |
| if (s->avoid_negative_ts < 0) { |
| s->avoid_negative_ts = 1; |
| s->internal->avoid_negative_ts_use_pts = 1; |
| } |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| // ms precision is the de-facto standard timescale for mkv files |
| avpriv_set_pts_info(s->streams[i], 64, 1, 1000); |
| } |
| |
| return 0; |
| } |
| |
| static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt) |
| { |
| int ret = 1; |
| AVStream *st = s->streams[pkt->stream_index]; |
| |
| if (st->codecpar->codec_id == AV_CODEC_ID_AAC) { |
| if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) |
| ret = ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL); |
| } else if (st->codecpar->codec_id == AV_CODEC_ID_VP9) { |
| ret = ff_stream_add_bitstream_filter(st, "vp9_superframe", NULL); |
| } |
| |
| return ret; |
| } |
| |
| static 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_NONE, 0xFFFFFFFF } |
| }; |
| |
| static const AVCodecTag additional_video_tags[] = { |
| { 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 } |
| }; |
| |
| static const AVCodecTag additional_subtitle_tags[] = { |
| { AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF }, |
| { AV_CODEC_ID_HDMV_PGS_SUBTITLE, 0xFFFFFFFF }, |
| { AV_CODEC_ID_NONE, 0xFFFFFFFF } |
| }; |
| |
| #define OFFSET(x) offsetof(MatroskaMuxContext, x) |
| #define FLAGS AV_OPT_FLAG_ENCODING_PARAM |
| static const AVOption options[] = { |
| { "reserve_index_space", "Reserve a given amount of space (in bytes) at the beginning of the file for the index (cues).", OFFSET(reserve_cues_space), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS }, |
| { "cluster_size_limit", "Store at most the provided amount of bytes in a cluster. ", OFFSET(cluster_size_limit), AV_OPT_TYPE_INT , { .i64 = -1 }, -1, INT_MAX, FLAGS }, |
| { "cluster_time_limit", "Store at most the provided number of milliseconds in a cluster.", OFFSET(cluster_time_limit), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, FLAGS }, |
| { "dash", "Create a WebM file conforming to WebM DASH specification", OFFSET(is_dash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, |
| { "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 127, FLAGS }, |
| { "live", "Write files assuming it is a live stream.", OFFSET(is_live), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, |
| { "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, |
| { "write_crc32", "write a CRC32 element inside every Level 1 element", OFFSET(write_crc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS }, |
| { NULL }, |
| }; |
| |
| #if CONFIG_MATROSKA_MUXER |
| static const AVClass matroska_class = { |
| .class_name = "matroska muxer", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| 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, |
| .init = mkv_init, |
| .write_header = mkv_write_header, |
| .write_packet = mkv_write_flush_packet, |
| .write_trailer = mkv_write_trailer, |
| .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | |
| AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH, |
| .codec_tag = (const AVCodecTag* const []){ |
| ff_codec_bmp_tags, ff_codec_wav_tags, |
| additional_audio_tags, additional_video_tags, additional_subtitle_tags, 0 |
| }, |
| .subtitle_codec = AV_CODEC_ID_ASS, |
| .query_codec = mkv_query_codec, |
| .check_bitstream = mkv_check_bitstream, |
| .priv_class = &matroska_class, |
| }; |
| #endif |
| |
| #if CONFIG_WEBM_MUXER |
| static const AVClass webm_class = { |
| .class_name = "webm muxer", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| 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 = CONFIG_LIBOPUS_ENCODER ? AV_CODEC_ID_OPUS : AV_CODEC_ID_VORBIS, |
| .video_codec = CONFIG_LIBVPX_VP9_ENCODER? AV_CODEC_ID_VP9 : AV_CODEC_ID_VP8, |
| .subtitle_codec = AV_CODEC_ID_WEBVTT, |
| .init = mkv_init, |
| .write_header = mkv_write_header, |
| .write_packet = mkv_write_flush_packet, |
| .write_trailer = mkv_write_trailer, |
| .check_bitstream = mkv_check_bitstream, |
| .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | |
| AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH, |
| .priv_class = &webm_class, |
| }; |
| #endif |
| |
| #if CONFIG_MATROSKA_AUDIO_MUXER |
| static const AVClass mka_class = { |
| .class_name = "matroska audio muxer", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| AVOutputFormat ff_matroska_audio_muxer = { |
| .name = "matroska", |
| .long_name = NULL_IF_CONFIG_SMALL("Matroska Audio"), |
| .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, |
| .init = mkv_init, |
| .write_header = mkv_write_header, |
| .write_packet = mkv_write_flush_packet, |
| .write_trailer = mkv_write_trailer, |
| .check_bitstream = mkv_check_bitstream, |
| .flags = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT | |
| AVFMT_ALLOW_FLUSH, |
| .codec_tag = (const AVCodecTag* const []){ |
| ff_codec_wav_tags, additional_audio_tags, 0 |
| }, |
| .priv_class = &mka_class, |
| }; |
| #endif |