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2894 lines
104 KiB
C
Executable File
2894 lines
104 KiB
C
Executable File
/*
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* Matroska muxer
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* Copyright (c) 2007 David Conrad
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "av1.h"
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#include "avc.h"
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#include "hevc.h"
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#include "avformat.h"
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#include "avio_internal.h"
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#include "avlanguage.h"
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#include "flacenc.h"
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#include "internal.h"
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#include "isom.h"
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#include "matroska.h"
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#include "riff.h"
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#include "vorbiscomment.h"
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#include "wv.h"
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#include "libavutil/avstring.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/crc.h"
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#include "libavutil/dict.h"
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#include "libavutil/intfloat.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/lfg.h"
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#include "libavutil/mastering_display_metadata.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/opt.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/random_seed.h"
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#include "libavutil/rational.h"
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#include "libavutil/samplefmt.h"
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#include "libavutil/stereo3d.h"
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#include "libavcodec/xiph.h"
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#include "libavcodec/mpeg4audio.h"
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/* Level 1 elements we create a SeekHead entry for:
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* Info, Tracks, Chapters, Attachments, Tags (potentially twice) and Cues */
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#define MAX_SEEKHEAD_ENTRIES 7
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#define IS_SEEKABLE(pb, mkv) (((pb)->seekable & AVIO_SEEKABLE_NORMAL) && \
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!(mkv)->is_live)
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enum {
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DEFAULT_MODE_INFER,
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DEFAULT_MODE_INFER_NO_SUBS,
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DEFAULT_MODE_PASSTHROUGH,
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};
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typedef struct ebml_master {
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int64_t pos; ///< absolute offset in the containing AVIOContext where the master's elements start
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int sizebytes; ///< how many bytes were reserved for the size
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} ebml_master;
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typedef struct ebml_stored_master {
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AVIOContext *bc;
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int64_t pos;
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} ebml_stored_master;
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typedef struct mkv_seekhead_entry {
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uint32_t elementid;
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uint64_t segmentpos;
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} mkv_seekhead_entry;
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typedef struct mkv_seekhead {
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int64_t filepos;
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mkv_seekhead_entry entries[MAX_SEEKHEAD_ENTRIES];
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int num_entries;
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int reserved_size;
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} mkv_seekhead;
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typedef struct mkv_cuepoint {
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uint64_t pts;
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int stream_idx;
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int64_t cluster_pos; ///< offset of the cluster containing the block relative to the segment
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int64_t relative_pos; ///< relative offset from the position of the cluster containing the block
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int64_t duration; ///< duration of the block according to time base
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} mkv_cuepoint;
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typedef struct mkv_cues {
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mkv_cuepoint *entries;
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int num_entries;
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} mkv_cues;
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typedef struct mkv_track {
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int write_dts;
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int has_cue;
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uint64_t uid;
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unsigned track_num;
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int track_num_size;
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int sample_rate;
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int64_t sample_rate_offset;
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int64_t last_timestamp;
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int64_t duration;
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int64_t duration_offset;
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int64_t codecpriv_offset;
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int64_t ts_offset;
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} mkv_track;
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#define MODE_MATROSKAv2 0x01
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#define MODE_WEBM 0x02
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typedef struct MatroskaMuxContext {
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const AVClass *class;
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int mode;
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ebml_stored_master info;
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ebml_stored_master track;
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ebml_stored_master tags;
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int64_t segment_offset;
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AVIOContext *cluster_bc;
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int64_t cluster_pos; ///< file offset of the current Cluster
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int64_t cluster_pts;
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int64_t duration_offset;
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int64_t duration;
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mkv_track *tracks;
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mkv_seekhead seekhead;
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mkv_cues cues;
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int64_t cues_pos;
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AVPacket cur_audio_pkt;
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unsigned nb_attachments;
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int have_video;
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int wrote_chapters;
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int wrote_tags;
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int reserve_cues_space;
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int cluster_size_limit;
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int64_t cluster_time_limit;
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int write_crc;
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int is_live;
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int is_dash;
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int dash_track_number;
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int allow_raw_vfw;
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int default_mode;
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uint32_t segment_uid[4];
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} MatroskaMuxContext;
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/** 2 bytes * 7 for EBML IDs, 7 1-byte EBML lengths, 6 1-byte uint,
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* 8 byte for "matroska" doctype string */
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#define MAX_EBML_HEADER_SIZE 35
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/** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit
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* offset, 4 bytes for target EBML ID */
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#define MAX_SEEKENTRY_SIZE 21
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/** 4 * (1-byte EBML ID, 1-byte EBML size, 8-byte uint max) */
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#define MAX_CUETRACKPOS_SIZE 40
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/** Seek preroll value for opus */
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#define OPUS_SEEK_PREROLL 80000000
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static int ebml_id_size(uint32_t id)
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{
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return (av_log2(id) + 7U) / 8;
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}
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static void put_ebml_id(AVIOContext *pb, uint32_t id)
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{
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int i = ebml_id_size(id);
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while (i--)
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avio_w8(pb, (uint8_t)(id >> (i * 8)));
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}
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/**
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* Write an EBML size meaning "unknown size".
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*
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* @param bytes The number of bytes the size should occupy (maximum: 8).
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*/
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static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
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{
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av_assert0(bytes <= 8);
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avio_w8(pb, 0x1ff >> bytes);
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ffio_fill(pb, 0xff, bytes - 1);
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}
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/**
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* Returns how many bytes are needed to represent a number
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* as EBML variable length integer.
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*/
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static int ebml_num_size(uint64_t num)
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{
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int bytes = 0;
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do {
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bytes++;
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} while (num >>= 7);
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return bytes;
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}
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/**
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* Calculate how many bytes are needed to represent the length field
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* of an EBML element whose payload has a given length.
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*/
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static int ebml_length_size(uint64_t length)
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{
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return ebml_num_size(length + 1);
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}
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/**
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* Write a number as EBML variable length integer on `bytes` bytes.
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* `bytes` is taken literally without checking.
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*/
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static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
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{
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num |= 1ULL << bytes * 7;
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for (int i = bytes - 1; i >= 0; i--)
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avio_w8(pb, (uint8_t)(num >> i * 8));
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}
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/**
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* Write a length as EBML variable length integer.
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*
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* @param bytes The number of bytes that need to be used to write the number.
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* If zero, the minimal number of bytes will be used.
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*/
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static void put_ebml_length(AVIOContext *pb, uint64_t length, int bytes)
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{
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int needed_bytes = ebml_length_size(length);
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// sizes larger than this are currently undefined in EBML
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av_assert0(length < (1ULL << 56) - 1);
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if (bytes == 0)
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bytes = needed_bytes;
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// The bytes needed to write the given size must not exceed
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// the bytes that we ought to use.
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av_assert0(bytes >= needed_bytes);
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put_ebml_num(pb, length, bytes);
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}
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/**
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* Write a (random) UID with fixed size to make the output more deterministic
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*/
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static void put_ebml_uid(AVIOContext *pb, uint32_t elementid, uint64_t uid)
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{
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put_ebml_id(pb, elementid);
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put_ebml_length(pb, 8, 0);
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avio_wb64(pb, uid);
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}
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static void put_ebml_uint(AVIOContext *pb, uint32_t elementid, uint64_t val)
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{
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int i, bytes = 1;
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uint64_t tmp = val;
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while (tmp >>= 8)
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bytes++;
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put_ebml_id(pb, elementid);
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put_ebml_length(pb, bytes, 0);
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for (i = bytes - 1; i >= 0; i--)
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avio_w8(pb, (uint8_t)(val >> i * 8));
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}
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static void put_ebml_sint(AVIOContext *pb, uint32_t elementid, int64_t val)
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{
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int i, bytes = 1;
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uint64_t tmp = 2*(val < 0 ? val^-1 : val);
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while (tmp >>= 8)
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bytes++;
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put_ebml_id(pb, elementid);
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put_ebml_length(pb, bytes, 0);
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for (i = bytes - 1; i >= 0; i--)
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avio_w8(pb, (uint8_t)(val >> i * 8));
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}
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static void put_ebml_float(AVIOContext *pb, uint32_t elementid, double val)
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{
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put_ebml_id(pb, elementid);
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put_ebml_length(pb, 8, 0);
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avio_wb64(pb, av_double2int(val));
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}
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static void put_ebml_binary(AVIOContext *pb, uint32_t elementid,
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const void *buf, int size)
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{
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put_ebml_id(pb, elementid);
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put_ebml_length(pb, size, 0);
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avio_write(pb, buf, size);
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}
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static void put_ebml_string(AVIOContext *pb, uint32_t elementid,
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const char *str)
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{
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put_ebml_binary(pb, elementid, str, strlen(str));
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}
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/**
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* Write a void element of a given size. Useful for reserving space in
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* the file to be written to later.
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*
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* @param size The number of bytes to reserve, which must be at least 2.
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*/
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static void put_ebml_void(AVIOContext *pb, int size)
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{
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av_assert0(size >= 2);
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put_ebml_id(pb, EBML_ID_VOID);
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// we need to subtract the length needed to store the size from the
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// size we need to reserve so 2 cases, we use 8 bytes to store the
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// size if possible, 1 byte otherwise
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if (size < 10) {
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size -= 2;
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put_ebml_length(pb, size, 0);
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} else {
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size -= 9;
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put_ebml_length(pb, size, 8);
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}
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ffio_fill(pb, 0, size);
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}
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static ebml_master start_ebml_master(AVIOContext *pb, uint32_t elementid,
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uint64_t expectedsize)
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{
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int bytes = expectedsize ? ebml_length_size(expectedsize) : 8;
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put_ebml_id(pb, elementid);
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put_ebml_size_unknown(pb, bytes);
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return (ebml_master) { avio_tell(pb), bytes };
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}
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static void end_ebml_master(AVIOContext *pb, ebml_master master)
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{
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int64_t pos = avio_tell(pb);
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if (avio_seek(pb, master.pos - master.sizebytes, SEEK_SET) < 0)
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return;
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put_ebml_length(pb, pos - master.pos, master.sizebytes);
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avio_seek(pb, pos, SEEK_SET);
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}
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static void mkv_add_seekhead_entry(MatroskaMuxContext *mkv, uint32_t elementid,
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uint64_t filepos)
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{
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mkv_seekhead *seekhead = &mkv->seekhead;
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av_assert1(seekhead->num_entries < MAX_SEEKHEAD_ENTRIES);
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seekhead->entries[seekhead->num_entries].elementid = elementid;
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seekhead->entries[seekhead->num_entries++].segmentpos = filepos - mkv->segment_offset;
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}
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static int start_ebml_master_crc32(AVIOContext **dyn_cp, MatroskaMuxContext *mkv)
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{
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int ret;
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if (!*dyn_cp && (ret = avio_open_dyn_buf(dyn_cp)) < 0)
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return ret;
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if (mkv->write_crc)
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put_ebml_void(*dyn_cp, 6); /* Reserve space for CRC32 so position/size calculations using avio_tell() take it into account */
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return 0;
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}
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static int end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp,
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MatroskaMuxContext *mkv, uint32_t id,
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int length_size, int keep_buffer,
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int add_seekentry)
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{
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uint8_t *buf, crc[4];
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int ret, size, skip = 0;
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size = avio_get_dyn_buf(*dyn_cp, &buf);
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if ((ret = (*dyn_cp)->error) < 0)
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goto fail;
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if (add_seekentry)
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mkv_add_seekhead_entry(mkv, id, avio_tell(pb));
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put_ebml_id(pb, id);
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put_ebml_length(pb, size, length_size);
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if (mkv->write_crc) {
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skip = 6; /* Skip reserved 6-byte long void element from the dynamic buffer. */
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AV_WL32(crc, av_crc(av_crc_get_table(AV_CRC_32_IEEE_LE), UINT32_MAX, buf + skip, size - skip) ^ UINT32_MAX);
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put_ebml_binary(pb, EBML_ID_CRC32, crc, sizeof(crc));
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}
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avio_write(pb, buf + skip, size - skip);
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fail:
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if (keep_buffer) {
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ffio_reset_dyn_buf(*dyn_cp);
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} else {
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ffio_free_dyn_buf(dyn_cp);
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}
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return ret;
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}
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/**
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* Output EBML master. Keep the buffer if seekable, allowing for later updates.
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* Furthermore always add a SeekHead Entry for this element.
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*/
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static int end_ebml_master_crc32_tentatively(AVIOContext *pb,
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ebml_stored_master *elem,
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MatroskaMuxContext *mkv, uint32_t id)
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{
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if (IS_SEEKABLE(pb, mkv)) {
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uint8_t *buf;
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int size = avio_get_dyn_buf(elem->bc, &buf);
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if (elem->bc->error < 0)
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return elem->bc->error;
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elem->pos = avio_tell(pb);
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mkv_add_seekhead_entry(mkv, id, elem->pos);
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put_ebml_id(pb, id);
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put_ebml_length(pb, size, 0);
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avio_write(pb, buf, size);
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return 0;
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} else
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return end_ebml_master_crc32(pb, &elem->bc, mkv, id, 0, 0, 1);
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}
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static void put_xiph_size(AVIOContext *pb, int size)
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{
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ffio_fill(pb, 255, size / 255);
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avio_w8(pb, size % 255);
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}
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/**
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* Free the members allocated in the mux context.
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*/
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static void mkv_deinit(AVFormatContext *s)
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{
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MatroskaMuxContext *mkv = s->priv_data;
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av_packet_unref(&mkv->cur_audio_pkt);
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ffio_free_dyn_buf(&mkv->cluster_bc);
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ffio_free_dyn_buf(&mkv->info.bc);
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ffio_free_dyn_buf(&mkv->track.bc);
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ffio_free_dyn_buf(&mkv->tags.bc);
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av_freep(&mkv->cues.entries);
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av_freep(&mkv->tracks);
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}
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|
|
/**
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|
* Initialize the SeekHead element to be ready to index level 1 Matroska
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|
* elements. Enough space to write MAX_SEEKHEAD_ENTRIES SeekHead entries
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|
* will be reserved at the current file location.
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|
*/
|
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static void mkv_start_seekhead(MatroskaMuxContext *mkv, AVIOContext *pb)
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{
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mkv->seekhead.filepos = avio_tell(pb);
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// 21 bytes max for a Seek entry, 6 bytes max for the SeekHead ID
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// and size, 6 bytes for a CRC32 element, and 2 bytes to guarantee
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// that an EBML void element will fit afterwards
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mkv->seekhead.reserved_size = MAX_SEEKHEAD_ENTRIES * MAX_SEEKENTRY_SIZE + 14;
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put_ebml_void(pb, mkv->seekhead.reserved_size);
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}
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|
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/**
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* Write the SeekHead to the file at the location reserved for it
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* and seek to destpos afterwards. When error_on_seek_failure
|
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* is not set, failure to seek to the position designated for the
|
|
* SeekHead is not considered an error and it is presumed that
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* destpos is the current position; failure to seek to destpos
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* afterwards is always an error.
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*
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* @return 0 on success, < 0 on error.
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*/
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|
static int mkv_write_seekhead(AVIOContext *pb, MatroskaMuxContext *mkv,
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int error_on_seek_failure, int64_t destpos)
|
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{
|
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AVIOContext *dyn_cp = NULL;
|
|
mkv_seekhead *seekhead = &mkv->seekhead;
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int64_t remaining, ret64;
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int i, ret;
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|
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if ((ret64 = avio_seek(pb, seekhead->filepos, SEEK_SET)) < 0)
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|
return error_on_seek_failure ? ret64 : 0;
|
|
|
|
ret = start_ebml_master_crc32(&dyn_cp, mkv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
for (i = 0; i < seekhead->num_entries; i++) {
|
|
mkv_seekhead_entry *entry = &seekhead->entries[i];
|
|
ebml_master seekentry = start_ebml_master(dyn_cp, MATROSKA_ID_SEEKENTRY,
|
|
MAX_SEEKENTRY_SIZE);
|
|
|
|
put_ebml_id(dyn_cp, MATROSKA_ID_SEEKID);
|
|
put_ebml_length(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);
|
|
}
|
|
ret = end_ebml_master_crc32(pb, &dyn_cp, mkv,
|
|
MATROSKA_ID_SEEKHEAD, 0, 0, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb);
|
|
put_ebml_void(pb, remaining);
|
|
|
|
if ((ret64 = avio_seek(pb, destpos, SEEK_SET)) < 0)
|
|
return ret64;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_add_cuepoint(MatroskaMuxContext *mkv, int stream, int64_t ts,
|
|
int64_t cluster_pos, int64_t relative_pos, int64_t duration)
|
|
{
|
|
mkv_cues *cues = &mkv->cues;
|
|
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].cluster_pos = cluster_pos - mkv->segment_offset;
|
|
cues->entries[cues->num_entries].relative_pos = relative_pos;
|
|
cues->entries[cues->num_entries++].duration = duration;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_assemble_cues(AVStream **streams, AVIOContext *dyn_cp,
|
|
mkv_cues *cues, mkv_track *tracks, int num_tracks)
|
|
{
|
|
AVIOContext *cuepoint;
|
|
int ret;
|
|
|
|
ret = avio_open_dyn_buf(&cuepoint);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
for (mkv_cuepoint *entry = cues->entries, *end = entry + cues->num_entries;
|
|
entry < end;) {
|
|
uint64_t pts = entry->pts;
|
|
uint8_t *buf;
|
|
int size;
|
|
|
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUETIME, pts);
|
|
|
|
// put all the entries from different tracks that have the exact same
|
|
// timestamp into the same CuePoint
|
|
for (int j = 0; j < num_tracks; j++)
|
|
tracks[j].has_cue = 0;
|
|
do {
|
|
ebml_master track_positions;
|
|
int idx = entry->stream_idx;
|
|
|
|
av_assert0(idx >= 0 && idx < num_tracks);
|
|
if (tracks[idx].has_cue && streams[idx]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
|
|
continue;
|
|
tracks[idx].has_cue = 1;
|
|
track_positions = start_ebml_master(cuepoint, MATROSKA_ID_CUETRACKPOSITION, MAX_CUETRACKPOS_SIZE);
|
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUETRACK , tracks[idx].track_num);
|
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUECLUSTERPOSITION , entry->cluster_pos);
|
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUERELATIVEPOSITION, entry->relative_pos);
|
|
if (entry->duration != -1)
|
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUEDURATION , entry->duration);
|
|
end_ebml_master(cuepoint, track_positions);
|
|
} while (++entry < end && entry->pts == pts);
|
|
size = avio_get_dyn_buf(cuepoint, &buf);
|
|
if ((ret = cuepoint->error) < 0)
|
|
break;
|
|
put_ebml_binary(dyn_cp, MATROSKA_ID_POINTENTRY, buf, size);
|
|
ffio_reset_dyn_buf(cuepoint);
|
|
}
|
|
ffio_free_dyn_buf(&cuepoint);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb,
|
|
const AVCodecParameters *par)
|
|
{
|
|
const uint8_t *header_start[3];
|
|
int header_len[3];
|
|
int first_header_size;
|
|
int err, j;
|
|
|
|
if (par->codec_id == AV_CODEC_ID_VORBIS)
|
|
first_header_size = 30;
|
|
else
|
|
first_header_size = 42;
|
|
|
|
err = avpriv_split_xiph_headers(par->extradata, par->extradata_size,
|
|
first_header_size, header_start, header_len);
|
|
if (err < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
|
|
return err;
|
|
}
|
|
|
|
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, const AVCodecParameters *par)
|
|
{
|
|
if (par->extradata && par->extradata_size == 2)
|
|
avio_write(pb, par->extradata, 2);
|
|
else
|
|
avio_wl16(pb, 0x410); // fallback to the most recent version
|
|
return 0;
|
|
}
|
|
|
|
static int put_flac_codecpriv(AVFormatContext *s, AVIOContext *pb,
|
|
const 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];
|
|
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, NULL, 0);
|
|
av_assert1(len < (1 << 24) - 4);
|
|
|
|
avio_w8(pb, 0x84);
|
|
avio_wb24(pb, len);
|
|
|
|
ff_vorbiscomment_write(pb, dict, vendor, NULL, 0);
|
|
|
|
av_dict_free(&dict);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_aac_sample_rates(AVFormatContext *s, MatroskaMuxContext *mkv,
|
|
const uint8_t *extradata, int extradata_size,
|
|
int *sample_rate, int *output_sample_rate)
|
|
{
|
|
MPEG4AudioConfig mp4ac;
|
|
int ret;
|
|
|
|
ret = avpriv_mpeg4audio_get_config2(&mp4ac, extradata, extradata_size, 1, s);
|
|
/* Don't abort if the failure is because of missing extradata. Assume in that
|
|
* case a bitstream filter will provide the muxer with the extradata in the
|
|
* first packet.
|
|
* Abort however if s->pb is not seekable, as we would not be able to seek back
|
|
* to write the sample rate elements once the extradata shows up, anyway. */
|
|
if (ret < 0 && (extradata_size || !IS_SEEKABLE(s->pb, mkv))) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"Error parsing AAC extradata, unable to determine samplerate.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (ret < 0) {
|
|
/* This will only happen when this function is called while writing the
|
|
* header and no extradata is available. The space for this element has
|
|
* to be reserved for when this function is called again after the
|
|
* extradata shows up in the first packet, as there's no way to know if
|
|
* output_sample_rate will be different than sample_rate or not. */
|
|
*output_sample_rate = *sample_rate;
|
|
} else {
|
|
*sample_rate = mp4ac.sample_rate;
|
|
*output_sample_rate = mp4ac.ext_sample_rate;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_native_codecprivate(AVFormatContext *s, AVIOContext *pb,
|
|
const 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:
|
|
return ff_isom_write_hvcc(dyn_cp, par->extradata,
|
|
par->extradata_size, 0);
|
|
case AV_CODEC_ID_AV1:
|
|
if (par->extradata_size)
|
|
return ff_isom_write_av1c(dyn_cp, par->extradata,
|
|
par->extradata_size);
|
|
else
|
|
put_ebml_void(pb, 4 + 3);
|
|
break;
|
|
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;
|
|
case AV_CODEC_ID_AAC:
|
|
if (par->extradata_size)
|
|
avio_write(dyn_cp, par->extradata, par->extradata_size);
|
|
else
|
|
put_ebml_void(pb, MAX_PCE_SIZE + 2 + 4);
|
|
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, pb, 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, 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);
|
|
}
|
|
|
|
if (ret >= 0) {
|
|
codecpriv_size = avio_get_dyn_buf(dyn_cp, &codecpriv);
|
|
if ((ret = dyn_cp->error) >= 0 && codecpriv_size)
|
|
put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codecpriv,
|
|
codecpriv_size);
|
|
}
|
|
ffio_free_dyn_buf(&dyn_cp);
|
|
return ret;
|
|
}
|
|
|
|
static void mkv_write_video_color(AVIOContext *pb, const AVStream *st,
|
|
const AVCodecParameters *par)
|
|
{
|
|
/* 18 Elements with two bytes ID, one byte length field, 8 bytes payload
|
|
* a master element with two bytes ID and one byte length field
|
|
* plus another byte to stay clear of the end. */
|
|
uint8_t colour[(2 + 1 + 8) * 18 + (2 + 1) + 1];
|
|
AVIOContext buf, *dyn_cp = &buf;
|
|
int colorinfo_size;
|
|
const void *side_data;
|
|
|
|
ffio_init_context(dyn_cp, colour, sizeof(colour), 1, NULL, NULL, NULL, NULL);
|
|
|
|
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 (par->chroma_location != AVCHROMA_LOC_UNSPECIFIED &&
|
|
par->chroma_location <= AVCHROMA_LOC_TOP) {
|
|
int xpos, ypos;
|
|
|
|
avcodec_enum_to_chroma_pos(&xpos, &ypos, par->chroma_location);
|
|
put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ, (xpos >> 7) + 1);
|
|
put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORCHROMASITINGVERT, (ypos >> 7) + 1);
|
|
}
|
|
|
|
side_data = av_stream_get_side_data(st, AV_PKT_DATA_CONTENT_LIGHT_LEVEL,
|
|
NULL);
|
|
if (side_data) {
|
|
const AVContentLightMetadata *metadata = side_data;
|
|
put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORMAXCLL, metadata->MaxCLL);
|
|
put_ebml_uint(dyn_cp, MATROSKA_ID_VIDEOCOLORMAXFALL, metadata->MaxFALL);
|
|
}
|
|
|
|
side_data = av_stream_get_side_data(st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA,
|
|
NULL);
|
|
if (side_data) {
|
|
ebml_master meta_element = start_ebml_master(
|
|
dyn_cp, MATROSKA_ID_VIDEOCOLORMASTERINGMETA, 10 * (2 + 1 + 8));
|
|
const AVMasteringDisplayMetadata *metadata = 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_tell(dyn_cp);
|
|
if (colorinfo_size)
|
|
put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLOR, colour, colorinfo_size);
|
|
}
|
|
|
|
static void mkv_write_video_projection(AVFormatContext *s, AVIOContext *pb,
|
|
const AVStream *st)
|
|
{
|
|
ebml_master projection;
|
|
uint8_t private[20];
|
|
|
|
const AVSphericalMapping *spherical =
|
|
(const AVSphericalMapping *)av_stream_get_side_data(st, AV_PKT_DATA_SPHERICAL,
|
|
NULL);
|
|
|
|
if (!spherical)
|
|
return;
|
|
|
|
if (spherical->projection != AV_SPHERICAL_EQUIRECTANGULAR &&
|
|
spherical->projection != AV_SPHERICAL_EQUIRECTANGULAR_TILE &&
|
|
spherical->projection != AV_SPHERICAL_CUBEMAP) {
|
|
av_log(s, AV_LOG_WARNING, "Unknown projection type\n");
|
|
return;
|
|
}
|
|
|
|
// Maximally 4 8-byte elements with id-length 2 + 1 byte length field
|
|
// and the private data of the AV_SPHERICAL_EQUIRECTANGULAR_TILE case
|
|
projection = start_ebml_master(pb, MATROSKA_ID_VIDEOPROJECTION,
|
|
4 * (2 + 1 + 8) + (2 + 1 + 20));
|
|
|
|
switch (spherical->projection) {
|
|
case AV_SPHERICAL_EQUIRECTANGULAR:
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEOPROJECTIONTYPE,
|
|
MATROSKA_VIDEO_PROJECTION_TYPE_EQUIRECTANGULAR);
|
|
break;
|
|
case AV_SPHERICAL_EQUIRECTANGULAR_TILE:
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEOPROJECTIONTYPE,
|
|
MATROSKA_VIDEO_PROJECTION_TYPE_EQUIRECTANGULAR);
|
|
AV_WB32(private, 0); // version + flags
|
|
AV_WB32(private + 4, spherical->bound_top);
|
|
AV_WB32(private + 8, spherical->bound_bottom);
|
|
AV_WB32(private + 12, spherical->bound_left);
|
|
AV_WB32(private + 16, spherical->bound_right);
|
|
put_ebml_binary(pb, MATROSKA_ID_VIDEOPROJECTIONPRIVATE,
|
|
private, 20);
|
|
break;
|
|
case AV_SPHERICAL_CUBEMAP:
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEOPROJECTIONTYPE,
|
|
MATROSKA_VIDEO_PROJECTION_TYPE_CUBEMAP);
|
|
AV_WB32(private, 0); // version + flags
|
|
AV_WB32(private + 4, 0); // layout
|
|
AV_WB32(private + 8, spherical->padding);
|
|
put_ebml_binary(pb, MATROSKA_ID_VIDEOPROJECTIONPRIVATE,
|
|
private, 12);
|
|
break;
|
|
default:
|
|
av_assert0(0);
|
|
}
|
|
|
|
if (spherical->yaw)
|
|
put_ebml_float(pb, MATROSKA_ID_VIDEOPROJECTIONPOSEYAW,
|
|
(double) spherical->yaw / (1 << 16));
|
|
if (spherical->pitch)
|
|
put_ebml_float(pb, MATROSKA_ID_VIDEOPROJECTIONPOSEPITCH,
|
|
(double) spherical->pitch / (1 << 16));
|
|
if (spherical->roll)
|
|
put_ebml_float(pb, MATROSKA_ID_VIDEOPROJECTIONPOSEROLL,
|
|
(double) spherical->roll / (1 << 16));
|
|
|
|
end_ebml_master(pb, projection);
|
|
}
|
|
|
|
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)
|
|
{
|
|
const AVDictionaryEntry *tag;
|
|
MatroskaVideoStereoModeType format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB;
|
|
const AVStereo3D *stereo;
|
|
|
|
*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 (int 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;
|
|
}
|
|
}
|
|
|
|
stereo = (const AVStereo3D*)av_stream_get_side_data(st, AV_PKT_DATA_STEREO3D,
|
|
NULL);
|
|
if (stereo) {
|
|
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;
|
|
}
|
|
}
|
|
|
|
if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
|
|
return 0;
|
|
|
|
// 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");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
// write StereoMode if format is valid
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, format);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
|
|
AVStream *st, mkv_track *track, AVIOContext *pb,
|
|
int is_default)
|
|
{
|
|
AVCodecParameters *par = st->codecpar;
|
|
ebml_master subinfo, track_master;
|
|
int native_id = 0;
|
|
int qt_id = 0;
|
|
int bit_depth;
|
|
int sample_rate = par->sample_rate;
|
|
int output_sample_rate = 0;
|
|
int display_width_div = 1;
|
|
int display_height_div = 1;
|
|
int j, ret;
|
|
const AVDictionaryEntry *tag;
|
|
|
|
if (par->codec_type == AVMEDIA_TYPE_ATTACHMENT)
|
|
return 0;
|
|
|
|
if (par->codec_id == AV_CODEC_ID_AAC) {
|
|
ret = get_aac_sample_rates(s, mkv, par->extradata, par->extradata_size,
|
|
&sample_rate, &output_sample_rate);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
track_master = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0);
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKNUMBER, track->track_num);
|
|
put_ebml_uid (pb, MATROSKA_ID_TRACKUID, track->uid);
|
|
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 ? tag->value : "und");
|
|
|
|
// The default value for TRACKFLAGDEFAULT is 1, so add element
|
|
// if we need to clear it.
|
|
if (!is_default)
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGDEFAULT, 0);
|
|
|
|
if (st->disposition & AV_DISPOSITION_FORCED)
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGFORCED, 1);
|
|
|
|
if (mkv->mode == MODE_WEBM) {
|
|
const char *codec_id;
|
|
if (par->codec_type != AVMEDIA_TYPE_SUBTITLE) {
|
|
for (j = 0; ff_webm_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
|
|
if (ff_webm_codec_tags[j].id == par->codec_id) {
|
|
codec_id = ff_webm_codec_tags[j].str;
|
|
native_id = 1;
|
|
break;
|
|
}
|
|
}
|
|
} else if (par->codec_id == AV_CODEC_ID_WEBVTT) {
|
|
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;
|
|
}
|
|
}
|
|
|
|
if (!native_id) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"Only VP8 or VP9 or AV1 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
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
|
|
if (par->codec_id != AV_CODEC_ID_RAWVIDEO || par->codec_tag) {
|
|
for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
|
|
if (ff_mkv_codec_tags[j].id == par->codec_id && par->codec_id != AV_CODEC_ID_FFV1) {
|
|
put_ebml_string(pb, MATROSKA_ID_CODECID, ff_mkv_codec_tags[j].str);
|
|
native_id = 1;
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
|
|
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 if( st->r_frame_rate.num > 0 && st->r_frame_rate.den > 0
|
|
&& av_cmp_q(av_inv_q(st->r_frame_rate), st->time_base) > 0)
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1000000000LL * st->r_frame_rate.den / st->r_frame_rate.num);
|
|
|
|
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");
|
|
track->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) {
|
|
if (mkv->mode == MODE_WEBM || 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 {
|
|
AVRational display_aspect_ratio;
|
|
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
|
|
par->width * (int64_t)st->sample_aspect_ratio.num,
|
|
par->height * (int64_t)st->sample_aspect_ratio.den,
|
|
1024 * 1024);
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH, display_aspect_ratio.num);
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, display_aspect_ratio.den);
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYUNIT, MATROSKA_VIDEO_DISPLAYUNIT_DAR);
|
|
}
|
|
}
|
|
} 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));
|
|
}
|
|
mkv_write_video_color(pb, st, par);
|
|
mkv_write_video_projection(s, pb, st);
|
|
|
|
end_ebml_master(pb, subinfo);
|
|
break;
|
|
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if (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);
|
|
}
|
|
// track->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);
|
|
|
|
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, 6 + 4 * 9);
|
|
put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , par->channels);
|
|
|
|
track->sample_rate_offset = avio_tell(pb);
|
|
put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
|
|
if (output_sample_rate)
|
|
put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
|
|
|
|
bit_depth = av_get_bits_per_sample(par->codec_id);
|
|
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 (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) {
|
|
track->codecpriv_offset = avio_tell(pb);
|
|
ret = mkv_write_codecprivate(s, pb, par, native_id, qt_id);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
end_ebml_master(pb, track_master);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_tracks(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int i, ret, video_default_idx, audio_default_idx, subtitle_default_idx;
|
|
|
|
if (mkv->nb_attachments == s->nb_streams)
|
|
return 0;
|
|
|
|
ret = start_ebml_master_crc32(&mkv->track.bc, mkv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (mkv->default_mode != DEFAULT_MODE_PASSTHROUGH) {
|
|
int video_idx, audio_idx, subtitle_idx;
|
|
|
|
video_idx = video_default_idx =
|
|
audio_idx = audio_default_idx =
|
|
subtitle_idx = subtitle_default_idx = -1;
|
|
|
|
for (i = s->nb_streams - 1; i >= 0; i--) {
|
|
AVStream *st = s->streams[i];
|
|
|
|
switch (st->codecpar->codec_type) {
|
|
#define CASE(type, variable) \
|
|
case AVMEDIA_TYPE_ ## type: \
|
|
variable ## _idx = i; \
|
|
if (st->disposition & AV_DISPOSITION_DEFAULT) \
|
|
variable ## _default_idx = i; \
|
|
break;
|
|
CASE(VIDEO, video)
|
|
CASE(AUDIO, audio)
|
|
CASE(SUBTITLE, subtitle)
|
|
#undef CASE
|
|
}
|
|
}
|
|
|
|
video_default_idx = FFMAX(video_default_idx, video_idx);
|
|
audio_default_idx = FFMAX(audio_default_idx, audio_idx);
|
|
if (mkv->default_mode != DEFAULT_MODE_INFER_NO_SUBS)
|
|
subtitle_default_idx = FFMAX(subtitle_default_idx, subtitle_idx);
|
|
}
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
int is_default = mkv->default_mode == DEFAULT_MODE_PASSTHROUGH ?
|
|
st->disposition & AV_DISPOSITION_DEFAULT :
|
|
i == video_default_idx || i == audio_default_idx ||
|
|
i == subtitle_default_idx;
|
|
ret = mkv_write_track(s, mkv, st, &mkv->tracks[i],
|
|
mkv->track.bc, is_default);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return end_ebml_master_crc32_tentatively(pb, &mkv->track, mkv,
|
|
MATROSKA_ID_TRACKS);
|
|
}
|
|
|
|
static int mkv_write_simpletag(AVIOContext *pb, const 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(MatroskaMuxContext *mkv, AVIOContext **pb,
|
|
ebml_master *tag, uint32_t elementid, uint64_t uid)
|
|
{
|
|
ebml_master targets;
|
|
int ret;
|
|
|
|
if (!*pb) {
|
|
ret = start_ebml_master_crc32(pb, mkv);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
*tag = start_ebml_master(*pb, MATROSKA_ID_TAG, 0);
|
|
targets = start_ebml_master(*pb, MATROSKA_ID_TAGTARGETS, 4 + 1 + 8);
|
|
if (elementid)
|
|
put_ebml_uid(*pb, elementid, uid);
|
|
end_ebml_master(*pb, targets);
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_check_tag_name(const char *name, uint32_t 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(MatroskaMuxContext *mkv, const AVDictionary *m,
|
|
AVIOContext **pb, ebml_master *tag,
|
|
uint32_t elementid, uint64_t uid)
|
|
{
|
|
const AVDictionaryEntry *t = NULL;
|
|
ebml_master tag2;
|
|
int ret;
|
|
|
|
ret = mkv_write_tag_targets(mkv, pb, tag ? tag : &tag2, elementid, uid);
|
|
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(*pb, t);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (!tag)
|
|
end_ebml_master(*pb, tag2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_check_tag(const AVDictionary *m, uint32_t elementid)
|
|
{
|
|
const 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;
|
|
ebml_master tag, *tagp = IS_SEEKABLE(s->pb, mkv) ? &tag : NULL;
|
|
int i, ret;
|
|
|
|
mkv->wrote_tags = 1;
|
|
|
|
ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL);
|
|
|
|
if (mkv_check_tag(s->metadata, 0)) {
|
|
ret = mkv_write_tag(mkv, s->metadata, &mkv->tags.bc, NULL, 0, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
const AVStream *st = s->streams[i];
|
|
mkv_track *track = &mkv->tracks[i];
|
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT)
|
|
continue;
|
|
|
|
if (!tagp && !mkv_check_tag(st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID))
|
|
continue;
|
|
|
|
ret = mkv_write_tag(mkv, st->metadata, &mkv->tags.bc, tagp,
|
|
MATROSKA_ID_TAGTARGETS_TRACKUID, track->uid);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (tagp) {
|
|
AVIOContext *pb = mkv->tags.bc;
|
|
ebml_master simpletag;
|
|
|
|
simpletag = start_ebml_master(pb, MATROSKA_ID_SIMPLETAG,
|
|
2 + 1 + 8 + 23);
|
|
put_ebml_string(pb, MATROSKA_ID_TAGNAME, "DURATION");
|
|
track->duration_offset = 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, simpletag);
|
|
end_ebml_master(pb, tag);
|
|
}
|
|
}
|
|
|
|
if (mkv->nb_attachments && mkv->mode != MODE_WEBM) {
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
const mkv_track *track = &mkv->tracks[i];
|
|
const AVStream *st = s->streams[i];
|
|
|
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT)
|
|
continue;
|
|
|
|
if (!mkv_check_tag(st->metadata, MATROSKA_ID_TAGTARGETS_ATTACHUID))
|
|
continue;
|
|
|
|
ret = mkv_write_tag(mkv, st->metadata, &mkv->tags.bc, NULL,
|
|
MATROSKA_ID_TAGTARGETS_ATTACHUID, track->uid);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (mkv->tags.bc) {
|
|
return end_ebml_master_crc32_tentatively(s->pb, &mkv->tags, mkv,
|
|
MATROSKA_ID_TAGS);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_chapters(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *dyn_cp = NULL, *dyn_tags = NULL, **tags, *pb = s->pb;
|
|
ebml_master editionentry;
|
|
uint64_t chapter_id_offset = 0;
|
|
AVRational scale = {1, 1E9};
|
|
int i, ret;
|
|
|
|
if (!s->nb_chapters || mkv->wrote_chapters)
|
|
return 0;
|
|
|
|
for (i = 0; i < s->nb_chapters; i++)
|
|
if (!s->chapters[i]->id) {
|
|
chapter_id_offset = 1;
|
|
break;
|
|
}
|
|
|
|
ret = start_ebml_master_crc32(&dyn_cp, mkv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
editionentry = start_ebml_master(dyn_cp, MATROSKA_ID_EDITIONENTRY, 0);
|
|
if (mkv->mode != MODE_WEBM) {
|
|
put_ebml_uint(dyn_cp, MATROSKA_ID_EDITIONFLAGDEFAULT, 1);
|
|
/* If mkv_write_tags() has already been called, then any tags
|
|
* corresponding to chapters will be put into a new Tags element. */
|
|
tags = mkv->wrote_tags ? &dyn_tags : &mkv->tags.bc;
|
|
} else
|
|
tags = NULL;
|
|
|
|
for (i = 0; i < s->nb_chapters; i++) {
|
|
ebml_master chapteratom, chapterdisplay;
|
|
const 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);
|
|
const AVDictionaryEntry *t;
|
|
if (chapterstart < 0 || chapterstart > chapterend || chapterend < 0) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"Invalid chapter start (%"PRId64") or end (%"PRId64").\n",
|
|
chapterstart, chapterend);
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
chapteratom = start_ebml_master(dyn_cp, MATROSKA_ID_CHAPTERATOM, 0);
|
|
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERUID,
|
|
(uint32_t)c->id + chapter_id_offset);
|
|
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMESTART, chapterstart);
|
|
put_ebml_uint(dyn_cp, MATROSKA_ID_CHAPTERTIMEEND, chapterend);
|
|
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);
|
|
|
|
if (tags && mkv_check_tag(c->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID)) {
|
|
ret = mkv_write_tag(mkv, c->metadata, tags, NULL,
|
|
MATROSKA_ID_TAGTARGETS_CHAPTERUID,
|
|
(uint32_t)c->id + chapter_id_offset);
|
|
if (ret < 0)
|
|
goto fail;
|
|
}
|
|
}
|
|
end_ebml_master(dyn_cp, editionentry);
|
|
mkv->wrote_chapters = 1;
|
|
|
|
ret = end_ebml_master_crc32(pb, &dyn_cp, mkv, MATROSKA_ID_CHAPTERS, 0, 0, 1);
|
|
if (ret < 0)
|
|
goto fail;
|
|
if (dyn_tags)
|
|
return end_ebml_master_crc32(pb, &dyn_tags, mkv,
|
|
MATROSKA_ID_TAGS, 0, 0, 1);
|
|
return 0;
|
|
|
|
fail:
|
|
if (tags) {
|
|
/* tags == &mkv->tags.bc can only happen if mkv->tags.bc was
|
|
* initially NULL, so we never free older tags. */
|
|
ffio_free_dyn_buf(tags);
|
|
}
|
|
ffio_free_dyn_buf(&dyn_cp);
|
|
return ret;
|
|
}
|
|
|
|
static const char *get_mimetype(const AVStream *st)
|
|
{
|
|
const AVDictionaryEntry *t;
|
|
|
|
if (t = av_dict_get(st->metadata, "mimetype", NULL, 0))
|
|
return t->value;
|
|
if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
|
|
const AVCodecDescriptor *desc = avcodec_descriptor_get(st->codecpar->codec_id);
|
|
if (desc && desc->mime_types) {
|
|
return desc->mime_types[0];
|
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_TEXT)
|
|
return "text/plain";
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int mkv_write_attachments(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *dyn_cp = NULL, *pb = s->pb;
|
|
int i, ret;
|
|
|
|
if (!mkv->nb_attachments)
|
|
return 0;
|
|
|
|
ret = start_ebml_master_crc32(&dyn_cp, mkv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
const AVStream *st = s->streams[i];
|
|
mkv_track *track = &mkv->tracks[i];
|
|
ebml_master attached_file;
|
|
const AVDictionaryEntry *t;
|
|
const char *mimetype;
|
|
|
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT)
|
|
continue;
|
|
|
|
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);
|
|
|
|
mimetype = get_mimetype(st);
|
|
av_assert0(mimetype);
|
|
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_uid(dyn_cp, MATROSKA_ID_FILEUID, track->uid);
|
|
end_ebml_master(dyn_cp, attached_file);
|
|
}
|
|
return end_ebml_master_crc32(pb, &dyn_cp, mkv,
|
|
MATROSKA_ID_ATTACHMENTS, 0, 0, 1);
|
|
}
|
|
|
|
static int64_t get_metadata_duration(AVFormatContext *s)
|
|
{
|
|
const AVDictionaryEntry *duration = av_dict_get(s->metadata, "DURATION",
|
|
NULL, 0);
|
|
int64_t max = 0;
|
|
int64_t us;
|
|
|
|
if (duration && (av_parse_time(&us, duration->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 (unsigned i = 0; i < s->nb_streams; i++) {
|
|
int64_t us;
|
|
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;
|
|
const AVDictionaryEntry *tag;
|
|
int ret, i, version = 2;
|
|
int64_t creation_time;
|
|
|
|
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_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;
|
|
}
|
|
|
|
ebml_header = start_ebml_master(pb, EBML_ID_HEADER, MAX_EBML_HEADER_SIZE);
|
|
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);
|
|
|
|
put_ebml_id(pb, MATROSKA_ID_SEGMENT);
|
|
put_ebml_size_unknown(pb, 8);
|
|
mkv->segment_offset = avio_tell(pb);
|
|
|
|
// We write a SeekHead at the beginning to point to all other level
|
|
// one elements (except Clusters).
|
|
mkv_start_seekhead(mkv, pb);
|
|
|
|
ret = start_ebml_master_crc32(&mkv->info.bc, mkv);
|
|
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)
|
|
put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, mkv->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 if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
|
|
put_ebml_void(pb, 11); // assumes double-precision float to be written
|
|
}
|
|
}
|
|
ret = end_ebml_master_crc32_tentatively(s->pb, &mkv->info,
|
|
mkv, MATROSKA_ID_INFO);
|
|
if (ret < 0)
|
|
return ret;
|
|
pb = s->pb;
|
|
|
|
ret = mkv_write_tracks(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = mkv_write_chapters(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (mkv->mode != MODE_WEBM) {
|
|
ret = mkv_write_attachments(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* Must come after mkv_write_chapters() to write chapter tags
|
|
* into the same Tags element as the other tags. */
|
|
ret = mkv_write_tags(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!IS_SEEKABLE(pb, mkv)) {
|
|
ret = mkv_write_seekhead(pb, mkv, 0, avio_tell(pb));
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (s->metadata_header_padding > 0) {
|
|
if (s->metadata_header_padding == 1)
|
|
s->metadata_header_padding++;
|
|
put_ebml_void(pb, s->metadata_header_padding);
|
|
}
|
|
|
|
if (mkv->reserve_cues_space) {
|
|
if (IS_SEEKABLE(pb, mkv)) {
|
|
mkv->cues_pos = avio_tell(pb);
|
|
if (mkv->reserve_cues_space == 1)
|
|
mkv->reserve_cues_space++;
|
|
put_ebml_void(pb, mkv->reserve_cues_space);
|
|
} else
|
|
mkv->reserve_cues_space = -1;
|
|
}
|
|
|
|
av_init_packet(&mkv->cur_audio_pkt);
|
|
mkv->cur_audio_pkt.size = 0;
|
|
mkv->cluster_pos = -1;
|
|
|
|
// start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
|
|
// after 4k and on a keyframe
|
|
if (IS_SEEKABLE(pb, mkv)) {
|
|
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;
|
|
}
|
|
|
|
static int mkv_blockgroup_size(int pkt_size, int track_num_size)
|
|
{
|
|
int size = pkt_size + track_num_size + 3;
|
|
size += ebml_length_size(size);
|
|
size += 2; // EBML ID for block and block duration
|
|
size += 9; // max size of block duration incl. length field
|
|
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 int mkv_write_block(AVFormatContext *s, AVIOContext *pb,
|
|
uint32_t blockid, const AVPacket *pkt, int keyframe)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
|
|
mkv_track *track = &mkv->tracks[pkt->stream_index];
|
|
uint8_t *data = NULL, *side_data = NULL;
|
|
int err = 0, offset = 0, size = pkt->size, side_data_size;
|
|
int64_t ts = track->write_dts ? pkt->dts : pkt->pts;
|
|
uint64_t additional_id;
|
|
int64_t discard_padding = 0;
|
|
unsigned track_number = track->track_num;
|
|
ebml_master block_group, block_additions, block_more;
|
|
|
|
ts += track->ts_offset;
|
|
|
|
/* The following string is identical to the one in mkv_write_vtt_blocks
|
|
* so that only one copy needs to exist in binaries. */
|
|
av_log(s, AV_LOG_DEBUG,
|
|
"Writing block of size %d with pts %" PRId64 ", dts %" PRId64 ", "
|
|
"duration %" PRId64 " at relative offset %" PRId64 " in cluster "
|
|
"at offset %" PRId64 ". TrackNumber %u, keyframe %d\n",
|
|
pkt->size, pkt->pts, pkt->dts, pkt->duration, avio_tell(pb),
|
|
mkv->cluster_pos, track_number, keyframe != 0);
|
|
|
|
if (par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 0 &&
|
|
(AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1)) {
|
|
err = 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 */
|
|
err = ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL);
|
|
} else if (par->codec_id == AV_CODEC_ID_AV1) {
|
|
err = ff_av1_filter_obus_buf(pkt->data, &data, &size, &offset);
|
|
} else if (par->codec_id == AV_CODEC_ID_WAVPACK) {
|
|
err = mkv_strip_wavpack(pkt->data, &data, &size);
|
|
} else
|
|
data = pkt->data;
|
|
|
|
if (err < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Error when reformatting data of "
|
|
"a packet from stream %d.\n", pkt->stream_index);
|
|
return err;
|
|
}
|
|
|
|
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) {
|
|
// Only the Codec-specific BlockMore (id == 1) is currently supported.
|
|
if (side_data_size < 8 || (additional_id = AV_RB64(side_data)) != 1) {
|
|
side_data_size = 0;
|
|
} else {
|
|
side_data += 8;
|
|
side_data_size -= 8;
|
|
}
|
|
}
|
|
|
|
if (side_data_size || discard_padding) {
|
|
block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0);
|
|
blockid = MATROSKA_ID_BLOCK;
|
|
}
|
|
|
|
put_ebml_id(pb, blockid);
|
|
put_ebml_length(pb, size + track->track_num_size + 3, 0);
|
|
put_ebml_num(pb, track_number, track->track_num_size);
|
|
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, track->last_timestamp - ts);
|
|
track->last_timestamp = ts;
|
|
|
|
if (discard_padding)
|
|
put_ebml_sint(pb, MATROSKA_ID_DISCARDPADDING, discard_padding);
|
|
|
|
if (side_data_size) {
|
|
block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0);
|
|
block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0);
|
|
/* Until dbc50f8a our demuxer used a wrong default value
|
|
* of BlockAddID, so we write it unconditionally. */
|
|
put_ebml_uint (pb, MATROSKA_ID_BLOCKADDID, additional_id);
|
|
put_ebml_binary(pb, MATROSKA_ID_BLOCKADDITIONAL,
|
|
side_data, side_data_size);
|
|
end_ebml_master(pb, block_more);
|
|
end_ebml_master(pb, block_additions);
|
|
}
|
|
if (side_data_size || discard_padding)
|
|
end_ebml_master(pb, block_group);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, const AVPacket *pkt)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
mkv_track *track = &mkv->tracks[pkt->stream_index];
|
|
ebml_master blockgroup;
|
|
int id_size, settings_size, size;
|
|
const char *id, *settings;
|
|
int64_t ts = track->write_dts ? pkt->dts : pkt->pts;
|
|
const int flags = 0;
|
|
|
|
id = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_IDENTIFIER,
|
|
&id_size);
|
|
id = id ? id : "";
|
|
|
|
settings = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_SETTINGS,
|
|
&settings_size);
|
|
settings = settings ? settings : "";
|
|
|
|
size = id_size + 1 + settings_size + 1 + pkt->size;
|
|
|
|
/* The following string is identical to the one in mkv_write_block so that
|
|
* only one copy needs to exist in binaries. */
|
|
av_log(s, AV_LOG_DEBUG,
|
|
"Writing block of size %d with pts %" PRId64 ", dts %" PRId64 ", "
|
|
"duration %" PRId64 " at relative offset %" PRId64 " in cluster "
|
|
"at offset %" PRId64 ". TrackNumber %u, keyframe %d\n",
|
|
size, pkt->pts, pkt->dts, pkt->duration, avio_tell(pb),
|
|
mkv->cluster_pos, track->track_num, 1);
|
|
|
|
blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP,
|
|
mkv_blockgroup_size(size, track->track_num_size));
|
|
|
|
put_ebml_id(pb, MATROSKA_ID_BLOCK);
|
|
put_ebml_length(pb, size + track->track_num_size + 3, 0);
|
|
put_ebml_num(pb, track->track_num, track->track_num_size);
|
|
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 int mkv_end_cluster(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
int ret;
|
|
|
|
if (!mkv->have_video) {
|
|
for (unsigned i = 0; i < s->nb_streams; i++)
|
|
mkv->tracks[i].has_cue = 0;
|
|
}
|
|
mkv->cluster_pos = -1;
|
|
ret = end_ebml_master_crc32(s->pb, &mkv->cluster_bc, mkv,
|
|
MATROSKA_ID_CLUSTER, 0, 1, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_check_new_extra_data(AVFormatContext *s, const AVPacket *pkt)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
mkv_track *track = &mkv->tracks[pkt->stream_index];
|
|
AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
|
|
uint8_t *side_data;
|
|
int side_data_size, ret;
|
|
|
|
side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
|
|
&side_data_size);
|
|
|
|
switch (par->codec_id) {
|
|
case AV_CODEC_ID_AAC:
|
|
if (side_data_size && mkv->track.bc) {
|
|
int filler, output_sample_rate = 0;
|
|
ret = get_aac_sample_rates(s, mkv, side_data, side_data_size,
|
|
&track->sample_rate, &output_sample_rate);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (!output_sample_rate)
|
|
output_sample_rate = track->sample_rate; // Space is already reserved, so it's this or a void element.
|
|
ret = ff_alloc_extradata(par, side_data_size);
|
|
if (ret < 0)
|
|
return ret;
|
|
memcpy(par->extradata, side_data, side_data_size);
|
|
avio_seek(mkv->track.bc, track->codecpriv_offset, SEEK_SET);
|
|
mkv_write_codecprivate(s, mkv->track.bc, par, 1, 0);
|
|
filler = MAX_PCE_SIZE + 2 + 4 - (avio_tell(mkv->track.bc) - track->codecpriv_offset);
|
|
if (filler)
|
|
put_ebml_void(mkv->track.bc, filler);
|
|
avio_seek(mkv->track.bc, track->sample_rate_offset, SEEK_SET);
|
|
put_ebml_float(mkv->track.bc, MATROSKA_ID_AUDIOSAMPLINGFREQ, track->sample_rate);
|
|
put_ebml_float(mkv->track.bc, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
|
|
} else if (!par->extradata_size && !track->sample_rate) {
|
|
// No extradata (codecpar or packet side data).
|
|
av_log(s, AV_LOG_ERROR, "Error parsing AAC extradata, unable to determine samplerate.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
break;
|
|
case AV_CODEC_ID_FLAC:
|
|
if (side_data_size && mkv->track.bc) {
|
|
uint8_t *old_extradata = par->extradata;
|
|
if (side_data_size != par->extradata_size) {
|
|
av_log(s, AV_LOG_ERROR, "Invalid FLAC STREAMINFO metadata for output stream %d\n",
|
|
pkt->stream_index);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
par->extradata = side_data;
|
|
avio_seek(mkv->track.bc, track->codecpriv_offset, SEEK_SET);
|
|
mkv_write_codecprivate(s, mkv->track.bc, par, 1, 0);
|
|
par->extradata = old_extradata;
|
|
}
|
|
break;
|
|
// FIXME: Remove the following once libaom starts propagating extradata during init()
|
|
// See https://bugs.chromium.org/p/aomedia/issues/detail?id=2012
|
|
case AV_CODEC_ID_AV1:
|
|
if (side_data_size && mkv->track.bc && !par->extradata_size) {
|
|
AVIOContext *dyn_cp;
|
|
uint8_t *codecpriv;
|
|
int codecpriv_size;
|
|
ret = avio_open_dyn_buf(&dyn_cp);
|
|
if (ret < 0)
|
|
return ret;
|
|
ff_isom_write_av1c(dyn_cp, side_data, side_data_size);
|
|
codecpriv_size = avio_get_dyn_buf(dyn_cp, &codecpriv);
|
|
if ((ret = dyn_cp->error) < 0 ||
|
|
!codecpriv_size && (ret = AVERROR_INVALIDDATA)) {
|
|
ffio_free_dyn_buf(&dyn_cp);
|
|
return ret;
|
|
}
|
|
avio_seek(mkv->track.bc, track->codecpriv_offset, SEEK_SET);
|
|
// Do not write the OBUs as we don't have space saved for them
|
|
put_ebml_binary(mkv->track.bc, MATROSKA_ID_CODECPRIVATE, codecpriv, 4);
|
|
ffio_free_dyn_buf(&dyn_cp);
|
|
ret = ff_alloc_extradata(par, side_data_size);
|
|
if (ret < 0)
|
|
return ret;
|
|
memcpy(par->extradata, side_data, side_data_size);
|
|
} else if (!par->extradata_size)
|
|
return AVERROR_INVALIDDATA;
|
|
break;
|
|
default:
|
|
if (side_data_size)
|
|
av_log(s, AV_LOG_DEBUG, "Ignoring new extradata in a packet for stream %d.\n", pkt->stream_index);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_packet_internal(AVFormatContext *s, const AVPacket *pkt)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *pb;
|
|
AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
|
|
mkv_track *track = &mkv->tracks[pkt->stream_index];
|
|
int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
|
|
int duration = pkt->duration;
|
|
int ret;
|
|
int64_t ts = track->write_dts ? pkt->dts : pkt->pts;
|
|
int64_t relative_packet_pos;
|
|
|
|
if (ts == AV_NOPTS_VALUE) {
|
|
av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
ts += track->ts_offset;
|
|
|
|
if (mkv->cluster_pos != -1) {
|
|
int64_t cluster_time = ts - mkv->cluster_pts;
|
|
if ((int16_t)cluster_time != cluster_time) {
|
|
ret = mkv_end_cluster(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
av_log(s, AV_LOG_WARNING, "Starting new cluster due to timestamp\n");
|
|
}
|
|
}
|
|
|
|
if (mkv->cluster_pos == -1) {
|
|
ret = start_ebml_master_crc32(&mkv->cluster_bc, mkv);
|
|
if (ret < 0)
|
|
return ret;
|
|
mkv->cluster_pos = avio_tell(s->pb);
|
|
put_ebml_uint(mkv->cluster_bc, MATROSKA_ID_CLUSTERTIMECODE, FFMAX(0, ts));
|
|
mkv->cluster_pts = FFMAX(0, ts);
|
|
av_log(s, AV_LOG_DEBUG,
|
|
"Starting new cluster with timestamp "
|
|
"%" PRId64 " at offset %" PRId64 " bytes\n",
|
|
mkv->cluster_pts, mkv->cluster_pos);
|
|
}
|
|
pb = mkv->cluster_bc;
|
|
|
|
relative_packet_pos = avio_tell(pb);
|
|
|
|
if (par->codec_type != AVMEDIA_TYPE_SUBTITLE) {
|
|
ret = mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (keyframe && IS_SEEKABLE(s->pb, mkv) &&
|
|
(par->codec_type == AVMEDIA_TYPE_VIDEO || !mkv->have_video && !track->has_cue)) {
|
|
ret = mkv_add_cuepoint(mkv, pkt->stream_index, ts,
|
|
mkv->cluster_pos, relative_packet_pos, -1);
|
|
if (ret < 0)
|
|
return ret;
|
|
track->has_cue = 1;
|
|
}
|
|
} 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,
|
|
track->track_num_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 (IS_SEEKABLE(s->pb, mkv)) {
|
|
ret = mkv_add_cuepoint(mkv, pkt->stream_index, ts,
|
|
mkv->cluster_pos, relative_packet_pos, duration);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
mkv->duration = FFMAX(mkv->duration, ts + duration);
|
|
track->duration = FFMAX(track->duration, ts + duration);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_packet(AVFormatContext *s, const 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;
|
|
|
|
ret = mkv_check_new_extra_data(s, pkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (mkv->cluster_pos != -1) {
|
|
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;
|
|
|
|
cluster_size = avio_tell(mkv->cluster_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 &&
|
|
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 (start_new_cluster) {
|
|
ret = mkv_end_cluster(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
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) {
|
|
ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt);
|
|
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) {
|
|
if (pkt->size > 0)
|
|
ret = av_packet_ref(&mkv->cur_audio_pkt, pkt);
|
|
} else
|
|
ret = mkv_write_packet_internal(s, pkt);
|
|
return ret;
|
|
}
|
|
|
|
static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
|
|
if (!pkt) {
|
|
if (mkv->cluster_pos != -1) {
|
|
int ret = mkv_end_cluster(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
av_log(s, AV_LOG_DEBUG,
|
|
"Flushing cluster at offset %" PRIu64 " bytes\n",
|
|
avio_tell(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 endpos, ret64;
|
|
int ret, ret2 = 0;
|
|
|
|
// 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);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"Could not write cached audio packet ret:%d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (mkv->cluster_pos != -1) {
|
|
ret = end_ebml_master_crc32(pb, &mkv->cluster_bc, mkv,
|
|
MATROSKA_ID_CLUSTER, 0, 0, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
ret = mkv_write_chapters(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!IS_SEEKABLE(pb, mkv))
|
|
return 0;
|
|
|
|
endpos = avio_tell(pb);
|
|
|
|
if (mkv->cues.num_entries && mkv->reserve_cues_space >= 0) {
|
|
AVIOContext *cues = NULL;
|
|
uint64_t size;
|
|
int length_size = 0;
|
|
|
|
ret = start_ebml_master_crc32(&cues, mkv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = mkv_assemble_cues(s->streams, cues, &mkv->cues,
|
|
mkv->tracks, s->nb_streams);
|
|
if (ret < 0) {
|
|
ffio_free_dyn_buf(&cues);
|
|
return ret;
|
|
}
|
|
|
|
if (mkv->reserve_cues_space) {
|
|
size = avio_tell(cues);
|
|
length_size = ebml_length_size(size);
|
|
size += 4 + length_size;
|
|
if (mkv->reserve_cues_space < size) {
|
|
av_log(s, AV_LOG_WARNING,
|
|
"Insufficient space reserved for Cues: "
|
|
"%d < %"PRIu64". No Cues will be output.\n",
|
|
mkv->reserve_cues_space, size);
|
|
ret2 = AVERROR(EINVAL);
|
|
goto after_cues;
|
|
} else {
|
|
if ((ret64 = avio_seek(pb, mkv->cues_pos, SEEK_SET)) < 0) {
|
|
ffio_free_dyn_buf(&cues);
|
|
return ret64;
|
|
}
|
|
if (mkv->reserve_cues_space == size + 1) {
|
|
/* There is no way to reserve a single byte because
|
|
* the minimal size of an EBML Void element is 2
|
|
* (1 byte ID, 1 byte length field). This problem
|
|
* is solved by writing the Cues' length field on
|
|
* one byte more than necessary. */
|
|
length_size++;
|
|
size++;
|
|
}
|
|
}
|
|
}
|
|
ret = end_ebml_master_crc32(pb, &cues, mkv, MATROSKA_ID_CUES,
|
|
length_size, 0, 1);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (mkv->reserve_cues_space) {
|
|
if (size < mkv->reserve_cues_space)
|
|
put_ebml_void(pb, mkv->reserve_cues_space - size);
|
|
} else
|
|
endpos = avio_tell(pb);
|
|
}
|
|
|
|
after_cues:
|
|
/* Lengths greater than (1ULL << 56) - 1 can't be represented
|
|
* via an EBML number, so leave the unknown length field. */
|
|
if (endpos - mkv->segment_offset < (1ULL << 56) - 1) {
|
|
if ((ret64 = avio_seek(pb, mkv->segment_offset - 8, SEEK_SET)) < 0)
|
|
return ret64;
|
|
put_ebml_length(pb, endpos - mkv->segment_offset, 8);
|
|
}
|
|
|
|
ret = mkv_write_seekhead(pb, mkv, 1, mkv->info.pos);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (mkv->info.bc) {
|
|
// update the duration
|
|
av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration);
|
|
avio_seek(mkv->info.bc, mkv->duration_offset, SEEK_SET);
|
|
put_ebml_float(mkv->info.bc, MATROSKA_ID_DURATION, mkv->duration);
|
|
ret = end_ebml_master_crc32(pb, &mkv->info.bc, mkv,
|
|
MATROSKA_ID_INFO, 0, 0, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (mkv->track.bc) {
|
|
// write Tracks master
|
|
avio_seek(pb, mkv->track.pos, SEEK_SET);
|
|
ret = end_ebml_master_crc32(pb, &mkv->track.bc, mkv,
|
|
MATROSKA_ID_TRACKS, 0, 0, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
// update stream durations
|
|
if (mkv->tags.bc) {
|
|
int i;
|
|
for (i = 0; i < s->nb_streams; ++i) {
|
|
const AVStream *st = s->streams[i];
|
|
const mkv_track *track = &mkv->tracks[i];
|
|
|
|
if (track->duration_offset > 0) {
|
|
double duration_sec = track->duration * av_q2d(st->time_base);
|
|
char duration_string[20] = "";
|
|
|
|
av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i,
|
|
track->duration);
|
|
|
|
avio_seek(mkv->tags.bc, track->duration_offset, 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(pb, mkv->tags.pos, SEEK_SET);
|
|
ret = end_ebml_master_crc32(pb, &mkv->tags.bc, mkv,
|
|
MATROSKA_ID_TAGS, 0, 0, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
avio_seek(pb, endpos, SEEK_SET);
|
|
|
|
return ret2;
|
|
}
|
|
|
|
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 webm_query_codec(enum AVCodecID codec_id, int std_compliance)
|
|
{
|
|
int i;
|
|
for (i = 0; ff_webm_codec_tags[i].id != AV_CODEC_ID_NONE; i++)
|
|
if (ff_webm_codec_tags[i].id == codec_id)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static uint64_t mkv_get_uid(const mkv_track *tracks, int i, AVLFG *c)
|
|
{
|
|
while (1) {
|
|
uint64_t uid;
|
|
int k;
|
|
uid = (uint64_t)av_lfg_get(c) << 32;
|
|
uid |= av_lfg_get(c);
|
|
if (!uid)
|
|
continue;
|
|
for (k = 0; k < i; k++) {
|
|
if (tracks[k].uid == uid)
|
|
break;
|
|
}
|
|
if (k == i)
|
|
return uid;
|
|
}
|
|
}
|
|
|
|
static int mkv_init(struct AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVLFG c;
|
|
unsigned nb_tracks = 0;
|
|
int i;
|
|
|
|
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->avoid_negative_ts < 0) {
|
|
s->avoid_negative_ts = 1;
|
|
s->internal->avoid_negative_ts_use_pts = 1;
|
|
}
|
|
|
|
if (!strcmp(s->oformat->name, "webm")) {
|
|
mkv->mode = MODE_WEBM;
|
|
mkv->write_crc = 0;
|
|
} else
|
|
mkv->mode = MODE_MATROSKAv2;
|
|
|
|
mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks));
|
|
if (!mkv->tracks)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
|
|
av_lfg_init(&c, av_get_random_seed());
|
|
|
|
// Calculate the SegmentUID now in order not to waste our random seed.
|
|
for (i = 0; i < 4; i++)
|
|
mkv->segment_uid[i] = av_lfg_get(&c);
|
|
}
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
mkv_track *track = &mkv->tracks[i];
|
|
|
|
if (s->flags & AVFMT_FLAG_BITEXACT) {
|
|
track->uid = i + 1;
|
|
} else {
|
|
track->uid = mkv_get_uid(mkv->tracks, i, &c);
|
|
}
|
|
|
|
// ms precision is the de-facto standard timescale for mkv files
|
|
avpriv_set_pts_info(st, 64, 1, 1000);
|
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
|
|
if (mkv->mode == MODE_WEBM) {
|
|
av_log(s, AV_LOG_WARNING, "Stream %d will be ignored "
|
|
"as WebM doesn't support attachments.\n", i);
|
|
} else if (!get_mimetype(st)) {
|
|
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);
|
|
}
|
|
mkv->nb_attachments++;
|
|
continue;
|
|
}
|
|
|
|
nb_tracks++;
|
|
track->track_num = mkv->is_dash ? mkv->dash_track_number : nb_tracks;
|
|
track->track_num_size = ebml_num_size(track->track_num);
|
|
}
|
|
|
|
if (mkv->is_dash && nb_tracks != 1)
|
|
return AVERROR(EINVAL);
|
|
|
|
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_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_QDMC, 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_NONE, 0xFFFFFFFF }
|
|
};
|
|
|
|
static const AVCodecTag additional_subtitle_tags[] = {
|
|
{ AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_DVD_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 }, 1, INT_MAX, 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 },
|
|
{ "default_mode", "Controls how a track's FlagDefault is inferred", OFFSET(default_mode), AV_OPT_TYPE_INT, { .i64 = DEFAULT_MODE_INFER }, DEFAULT_MODE_INFER, DEFAULT_MODE_PASSTHROUGH, FLAGS, "default_mode" },
|
|
{ "infer", "For each track type, mark the first track of disposition default as default; if none exists, mark the first track as default.", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_INFER }, 0, 0, FLAGS, "default_mode" },
|
|
{ "infer_no_subs", "For each track type, mark the first track of disposition default as default; for audio and video: if none exists, mark the first track as default.", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_INFER_NO_SUBS }, 0, 0, FLAGS, "default_mode" },
|
|
{ "passthrough", "Use the disposition flag as-is", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_PASSTHROUGH }, 0, 0, FLAGS, "default_mode" },
|
|
{ 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,
|
|
.deinit = mkv_deinit,
|
|
.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,
|
|
.deinit = mkv_deinit,
|
|
.write_header = mkv_write_header,
|
|
.write_packet = mkv_write_flush_packet,
|
|
.write_trailer = mkv_write_trailer,
|
|
.query_codec = webm_query_codec,
|
|
.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,
|
|
.deinit = mkv_deinit,
|
|
.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
|