mirror of
https://github.com/FFmpeg/FFmpeg.git
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6103faaa51
Based-on: patch by Asan Usipov <asan.usipov@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
1865 lines
66 KiB
C
1865 lines
66 KiB
C
/*
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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 "avc.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 "subtitles.h"
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#include "wv.h"
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#include "libavutil/avstring.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/mathematics.h"
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#include "libavutil/opt.h"
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#include "libavutil/random_seed.h"
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#include "libavutil/samplefmt.h"
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#include "libavutil/sha.h"
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#include "libavcodec/xiph.h"
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#include "libavcodec/mpeg4audio.h"
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#include "libavcodec/internal.h"
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typedef struct ebml_master {
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int64_t pos; ///< absolute offset in the file 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 mkv_seekhead_entry {
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unsigned int 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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int64_t segment_offset; ///< the file offset to the beginning of the segment
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int reserved_size; ///< -1 if appending to file
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int max_entries;
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mkv_seekhead_entry *entries;
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int num_entries;
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} mkv_seekhead;
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typedef struct {
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uint64_t pts;
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int tracknum;
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int64_t cluster_pos; ///< file offset of the cluster containing the block
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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 {
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int64_t segment_offset;
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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 {
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int write_dts;
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int has_cue;
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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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AVIOContext *dyn_bc;
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ebml_master segment;
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int64_t segment_offset;
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ebml_master cluster;
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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_seekhead *main_seekhead;
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mkv_cues *cues;
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mkv_track *tracks;
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AVPacket cur_audio_pkt;
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int have_attachments;
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int reserve_cues_space;
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int cluster_size_limit;
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int64_t cues_pos;
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int64_t cluster_time_limit;
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uint32_t chapter_id_offset;
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int wrote_chapters;
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} MatroskaMuxContext;
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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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/** per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4
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* 8-byte uint max */
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#define MAX_CUETRACKPOS_SIZE 42
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/** per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max */
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#define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE*num_tracks
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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(unsigned int id)
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{
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return (av_log2(id+1)-1)/7+1;
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}
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static void put_ebml_id(AVIOContext *pb, unsigned int 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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* Calculate how many bytes are needed to represent a given number in EBML.
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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 = 1;
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while ((num+1) >> bytes*7) bytes++;
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return bytes;
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}
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/**
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* Write a number in EBML variable length format.
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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, any number of bytes can be used.
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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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int i, needed_bytes = ebml_num_size(num);
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// sizes larger than this are currently undefined in EBML
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av_assert0(num < (1ULL<<56)-1);
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if (bytes == 0)
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// don't care how many bytes are used, so use the min
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bytes = needed_bytes;
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// the bytes needed to write the given size would exceed the bytes
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// that we need to use, so write unknown size. This shouldn't happen.
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av_assert0(bytes >= needed_bytes);
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num |= 1ULL << bytes*7;
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for (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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static void put_ebml_uint(AVIOContext *pb, unsigned int 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) bytes++;
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put_ebml_id(pb, elementid);
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put_ebml_num(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, unsigned int elementid, double val)
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{
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put_ebml_id(pb, elementid);
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put_ebml_num(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, unsigned int 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_num(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, unsigned int elementid, 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, uint64_t size)
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{
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int64_t currentpos = avio_tell(pb);
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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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put_ebml_num(pb, size-1, 0);
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else
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put_ebml_num(pb, size-9, 8);
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ffio_fill(pb, 0, currentpos + size - avio_tell(pb));
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}
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static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid, uint64_t expectedsize)
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{
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int bytes = expectedsize ? ebml_num_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_num(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 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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* Initialize a mkv_seekhead element to be ready to index level 1 Matroska
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* elements. If a maximum number of elements is specified, enough space
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* will be reserved at the current file location to write a seek head of
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* that size.
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*
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* @param segment_offset The absolute offset to the position in the file
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* where the segment begins.
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* @param numelements The maximum number of elements that will be indexed
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* by this seek head, 0 if unlimited.
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*/
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static mkv_seekhead * mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset, int numelements)
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{
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mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead));
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if (new_seekhead == NULL)
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return NULL;
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new_seekhead->segment_offset = segment_offset;
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if (numelements > 0) {
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new_seekhead->filepos = avio_tell(pb);
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// 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID
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// and size, and 3 bytes to guarantee that an EBML void element
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// will fit afterwards
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new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 13;
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new_seekhead->max_entries = numelements;
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put_ebml_void(pb, new_seekhead->reserved_size);
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}
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return new_seekhead;
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}
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static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
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{
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mkv_seekhead_entry *entries = seekhead->entries;
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// don't store more elements than we reserved space for
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if (seekhead->max_entries > 0 && seekhead->max_entries <= seekhead->num_entries)
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return -1;
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entries = av_realloc_array(entries, seekhead->num_entries + 1, sizeof(mkv_seekhead_entry));
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if (entries == NULL)
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return AVERROR(ENOMEM);
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seekhead->entries = entries;
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seekhead->entries[seekhead->num_entries].elementid = elementid;
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seekhead->entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset;
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return 0;
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}
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/**
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* Write the seek head to the file and free it. If a maximum number of
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* elements was specified to mkv_start_seekhead(), the seek head will
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* be written at the location reserved for it. Otherwise, it is written
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* at the current location in the file.
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*
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* @return The file offset where the seekhead was written,
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* -1 if an error occurred.
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*/
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static int64_t mkv_write_seekhead(AVIOContext *pb, mkv_seekhead *seekhead)
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{
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ebml_master metaseek, seekentry;
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int64_t currentpos;
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int i;
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currentpos = avio_tell(pb);
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if (seekhead->reserved_size > 0) {
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if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0) {
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currentpos = -1;
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goto fail;
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}
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}
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metaseek = start_ebml_master(pb, MATROSKA_ID_SEEKHEAD, seekhead->reserved_size);
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for (i = 0; i < seekhead->num_entries; i++) {
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mkv_seekhead_entry *entry = &seekhead->entries[i];
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seekentry = start_ebml_master(pb, MATROSKA_ID_SEEKENTRY, MAX_SEEKENTRY_SIZE);
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put_ebml_id(pb, MATROSKA_ID_SEEKID);
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put_ebml_num(pb, ebml_id_size(entry->elementid), 0);
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put_ebml_id(pb, entry->elementid);
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put_ebml_uint(pb, MATROSKA_ID_SEEKPOSITION, entry->segmentpos);
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end_ebml_master(pb, seekentry);
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}
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end_ebml_master(pb, metaseek);
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if (seekhead->reserved_size > 0) {
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uint64_t remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb);
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put_ebml_void(pb, remaining);
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avio_seek(pb, currentpos, SEEK_SET);
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currentpos = seekhead->filepos;
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}
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fail:
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av_freep(&seekhead->entries);
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av_free(seekhead);
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return currentpos;
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}
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static mkv_cues * mkv_start_cues(int64_t segment_offset)
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{
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mkv_cues *cues = av_mallocz(sizeof(mkv_cues));
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if (cues == NULL)
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return NULL;
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cues->segment_offset = segment_offset;
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return cues;
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}
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static int mkv_add_cuepoint(mkv_cues *cues, int stream, int64_t ts, int64_t cluster_pos, int64_t relative_pos,
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int64_t duration)
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{
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mkv_cuepoint *entries = cues->entries;
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if (ts < 0)
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return 0;
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entries = av_realloc_array(entries, cues->num_entries + 1, sizeof(mkv_cuepoint));
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if (entries == NULL)
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return AVERROR(ENOMEM);
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cues->entries = entries;
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cues->entries[cues->num_entries].pts = ts;
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cues->entries[cues->num_entries].tracknum = stream + 1;
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cues->entries[cues->num_entries].cluster_pos = cluster_pos - cues->segment_offset;
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cues->entries[cues->num_entries].relative_pos = relative_pos;
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cues->entries[cues->num_entries++].duration = duration;
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return 0;
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}
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static int64_t mkv_write_cues(AVIOContext *pb, mkv_cues *cues, mkv_track *tracks, int num_tracks)
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{
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ebml_master cues_element;
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int64_t currentpos;
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int i, j;
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currentpos = avio_tell(pb);
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cues_element = start_ebml_master(pb, MATROSKA_ID_CUES, 0);
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for (i = 0; i < cues->num_entries; i++) {
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ebml_master cuepoint, track_positions;
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mkv_cuepoint *entry = &cues->entries[i];
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uint64_t pts = entry->pts;
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cuepoint = start_ebml_master(pb, MATROSKA_ID_POINTENTRY, MAX_CUEPOINT_SIZE(num_tracks));
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put_ebml_uint(pb, MATROSKA_ID_CUETIME, pts);
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// put all the entries from different tracks that have the exact same
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// timestamp into the same CuePoint
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for (j = 0; j < num_tracks; j++)
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tracks[j].has_cue = 0;
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for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) {
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int tracknum = entry[j].tracknum - 1;
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av_assert0(tracknum>=0 && tracknum<num_tracks);
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if (tracks[tracknum].has_cue)
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continue;
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tracks[tracknum].has_cue = 1;
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track_positions = start_ebml_master(pb, MATROSKA_ID_CUETRACKPOSITION, MAX_CUETRACKPOS_SIZE);
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put_ebml_uint(pb, MATROSKA_ID_CUETRACK , entry[j].tracknum );
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put_ebml_uint(pb, MATROSKA_ID_CUECLUSTERPOSITION , entry[j].cluster_pos);
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put_ebml_uint(pb, MATROSKA_ID_CUERELATIVEPOSITION, entry[j].relative_pos);
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if (entry[j].duration != -1)
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put_ebml_uint(pb, MATROSKA_ID_CUEDURATION , entry[j].duration);
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end_ebml_master(pb, track_positions);
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}
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i += j - 1;
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end_ebml_master(pb, cuepoint);
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}
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end_ebml_master(pb, cues_element);
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return currentpos;
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}
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|
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static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec)
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|
{
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uint8_t *header_start[3];
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int header_len[3];
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|
int first_header_size;
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int j;
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if (codec->codec_id == AV_CODEC_ID_VORBIS)
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first_header_size = 30;
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else
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first_header_size = 42;
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if (avpriv_split_xiph_headers(codec->extradata, codec->extradata_size,
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first_header_size, header_start, header_len) < 0) {
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av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
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return -1;
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}
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avio_w8(pb, 2); // number packets - 1
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for (j = 0; j < 2; j++) {
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put_xiph_size(pb, header_len[j]);
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}
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for (j = 0; j < 3; j++)
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avio_write(pb, header_start[j], header_len[j]);
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return 0;
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}
|
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|
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static int put_wv_codecpriv(AVIOContext *pb, AVCodecContext *codec)
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|
{
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if (codec->extradata && codec->extradata_size == 2)
|
|
avio_write(pb, codec->extradata, 2);
|
|
else
|
|
avio_wl16(pb, 0x403); // fallback to the version mentioned in matroska specs
|
|
return 0;
|
|
}
|
|
|
|
static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, int *sample_rate, int *output_sample_rate)
|
|
{
|
|
MPEG4AudioConfig mp4ac;
|
|
|
|
if (avpriv_mpeg4audio_get_config(&mp4ac, codec->extradata,
|
|
codec->extradata_size * 8, 1) < 0) {
|
|
av_log(s, AV_LOG_WARNING, "Error parsing AAC extradata, unable to determine samplerate.\n");
|
|
return;
|
|
}
|
|
|
|
*sample_rate = mp4ac.sample_rate;
|
|
*output_sample_rate = mp4ac.ext_sample_rate;
|
|
}
|
|
|
|
static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec, int native_id, int qt_id)
|
|
{
|
|
AVIOContext *dyn_cp;
|
|
uint8_t *codecpriv;
|
|
int ret, codecpriv_size;
|
|
|
|
ret = avio_open_dyn_buf(&dyn_cp);
|
|
if(ret < 0)
|
|
return ret;
|
|
|
|
if (native_id) {
|
|
if (codec->codec_id == AV_CODEC_ID_VORBIS || codec->codec_id == AV_CODEC_ID_THEORA)
|
|
ret = put_xiph_codecpriv(s, dyn_cp, codec);
|
|
else if (codec->codec_id == AV_CODEC_ID_FLAC)
|
|
ret = ff_flac_write_header(dyn_cp, codec, 1);
|
|
else if (codec->codec_id == AV_CODEC_ID_WAVPACK)
|
|
ret = put_wv_codecpriv(dyn_cp, codec);
|
|
else if (codec->codec_id == AV_CODEC_ID_H264)
|
|
ret = ff_isom_write_avcc(dyn_cp, codec->extradata, codec->extradata_size);
|
|
else if (codec->codec_id == AV_CODEC_ID_ALAC) {
|
|
if (codec->extradata_size < 36) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"Invalid extradata found, ALAC expects a 36-byte "
|
|
"QuickTime atom.");
|
|
ret = AVERROR_INVALIDDATA;
|
|
} else
|
|
avio_write(dyn_cp, codec->extradata + 12,
|
|
codec->extradata_size - 12);
|
|
}
|
|
else if (codec->extradata_size && codec->codec_id != AV_CODEC_ID_TTA)
|
|
avio_write(dyn_cp, codec->extradata, codec->extradata_size);
|
|
} else if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
if (qt_id) {
|
|
if (!codec->codec_tag)
|
|
codec->codec_tag = ff_codec_get_tag(ff_codec_movvideo_tags, codec->codec_id);
|
|
if (codec->extradata_size)
|
|
avio_write(dyn_cp, codec->extradata, codec->extradata_size);
|
|
} else {
|
|
if (!codec->codec_tag)
|
|
codec->codec_tag = ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id);
|
|
if (!codec->codec_tag) {
|
|
av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n",
|
|
avcodec_get_name(codec->codec_id));
|
|
ret = AVERROR(EINVAL);
|
|
}
|
|
|
|
ff_put_bmp_header(dyn_cp, codec, ff_codec_bmp_tags, 0);
|
|
}
|
|
|
|
} else if (codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
unsigned int tag;
|
|
tag = ff_codec_get_tag(ff_codec_wav_tags, codec->codec_id);
|
|
if (!tag) {
|
|
av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n",
|
|
avcodec_get_name(codec->codec_id));
|
|
ret = AVERROR(EINVAL);
|
|
}
|
|
if (!codec->codec_tag)
|
|
codec->codec_tag = tag;
|
|
|
|
ff_put_wav_header(dyn_cp, codec);
|
|
}
|
|
|
|
codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv);
|
|
if (codecpriv_size)
|
|
put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codecpriv, codecpriv_size);
|
|
av_free(codecpriv);
|
|
return ret;
|
|
}
|
|
|
|
static int mkv_write_tracks(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
ebml_master tracks;
|
|
int i, j, ret, default_stream_exists = 0;
|
|
|
|
ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TRACKS, avio_tell(pb));
|
|
if (ret < 0) return ret;
|
|
|
|
tracks = start_ebml_master(pb, MATROSKA_ID_TRACKS, 0);
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT;
|
|
}
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
AVCodecContext *codec = st->codec;
|
|
ebml_master subinfo, track;
|
|
int native_id = 0;
|
|
int qt_id = 0;
|
|
int bit_depth = av_get_bits_per_sample(codec->codec_id);
|
|
int sample_rate = codec->sample_rate;
|
|
int output_sample_rate = 0;
|
|
int display_width_div = 1;
|
|
int display_height_div = 1;
|
|
AVDictionaryEntry *tag;
|
|
|
|
if (codec->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
|
|
mkv->have_attachments = 1;
|
|
continue;
|
|
}
|
|
|
|
if (!bit_depth)
|
|
bit_depth = av_get_bytes_per_sample(codec->sample_fmt) << 3;
|
|
if (!bit_depth)
|
|
bit_depth = codec->bits_per_coded_sample;
|
|
|
|
if (codec->codec_id == AV_CODEC_ID_AAC)
|
|
get_aac_sample_rates(s, codec, &sample_rate, &output_sample_rate);
|
|
|
|
track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0);
|
|
put_ebml_uint (pb, MATROSKA_ID_TRACKNUMBER , i + 1);
|
|
put_ebml_uint (pb, MATROSKA_ID_TRACKUID , i + 1);
|
|
put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)
|
|
|
|
if ((tag = av_dict_get(st->metadata, "title", NULL, 0)))
|
|
put_ebml_string(pb, MATROSKA_ID_TRACKNAME, tag->value);
|
|
tag = av_dict_get(st->metadata, "language", NULL, 0);
|
|
if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) {
|
|
put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag ? tag->value:"und");
|
|
} else if (tag && tag->value) {
|
|
put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag->value);
|
|
}
|
|
|
|
// The default value for TRACKFLAGDEFAULT is 1, so add element
|
|
// if we need to clear it.
|
|
if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT))
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGDEFAULT, !!(st->disposition & AV_DISPOSITION_DEFAULT));
|
|
|
|
if (st->disposition & AV_DISPOSITION_FORCED)
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGFORCED, 1);
|
|
|
|
if (mkv->mode == MODE_WEBM && codec->codec_id == AV_CODEC_ID_WEBVTT) {
|
|
const char *codec_id;
|
|
if (st->disposition & AV_DISPOSITION_CAPTIONS) {
|
|
codec_id = "D_WEBVTT/CAPTIONS";
|
|
native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
|
|
} else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) {
|
|
codec_id = "D_WEBVTT/DESCRIPTIONS";
|
|
native_id = MATROSKA_TRACK_TYPE_METADATA;
|
|
} else if (st->disposition & AV_DISPOSITION_METADATA) {
|
|
codec_id = "D_WEBVTT/METADATA";
|
|
native_id = MATROSKA_TRACK_TYPE_METADATA;
|
|
} else {
|
|
codec_id = "D_WEBVTT/SUBTITLES";
|
|
native_id = MATROSKA_TRACK_TYPE_SUBTITLE;
|
|
}
|
|
put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id);
|
|
} else {
|
|
// look for a codec ID string specific to mkv to use,
|
|
// if none are found, use AVI codes
|
|
for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
|
|
if (ff_mkv_codec_tags[j].id == codec->codec_id) {
|
|
put_ebml_string(pb, MATROSKA_ID_CODECID, ff_mkv_codec_tags[j].str);
|
|
native_id = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (codec->codec_id == AV_CODEC_ID_OPUS) {
|
|
uint64_t codec_delay =av_rescale_q(codec->delay,
|
|
(AVRational){1, codec->sample_rate},
|
|
(AVRational){1, 1000000000});
|
|
put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, codec_delay);
|
|
put_ebml_uint(pb, MATROSKA_ID_SEEKPREROLL, OPUS_SEEK_PREROLL);
|
|
|
|
}
|
|
|
|
if (mkv->mode == MODE_WEBM && !(codec->codec_id == AV_CODEC_ID_VP8 ||
|
|
codec->codec_id == AV_CODEC_ID_VP9 ||
|
|
((codec->codec_id == AV_CODEC_ID_OPUS)&&(codec->strict_std_compliance <= FF_COMPLIANCE_EXPERIMENTAL)) ||
|
|
codec->codec_id == AV_CODEC_ID_VORBIS ||
|
|
codec->codec_id == AV_CODEC_ID_WEBVTT)) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"Only VP8,VP9 video and Vorbis,Opus(experimental, use -strict -2) audio and WebVTT subtitles are supported for WebM.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
switch (codec->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO);
|
|
if(st->avg_frame_rate.num && st->avg_frame_rate.den && 1.0/av_q2d(st->avg_frame_rate) > av_q2d(codec->time_base))
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1E9/av_q2d(st->avg_frame_rate));
|
|
else
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, av_q2d(codec->time_base)*1E9);
|
|
|
|
if (!native_id &&
|
|
ff_codec_get_tag(ff_codec_movvideo_tags, codec->codec_id) &&
|
|
(!ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id)
|
|
|| codec->codec_id == AV_CODEC_ID_SVQ1
|
|
|| codec->codec_id == AV_CODEC_ID_SVQ3
|
|
|| codec->codec_id == AV_CODEC_ID_CINEPAK))
|
|
qt_id = 1;
|
|
|
|
if (qt_id)
|
|
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
|
|
else if (!native_id) {
|
|
// if there is no mkv-specific codec ID, use VFW mode
|
|
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
|
|
mkv->tracks[i].write_dts = 1;
|
|
}
|
|
|
|
subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
|
|
// XXX: interlace flag?
|
|
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width);
|
|
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height);
|
|
|
|
if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
|
|
(tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
|
|
// save stereo mode flag
|
|
uint64_t st_mode = MATROSKA_VIDEO_STEREO_MODE_COUNT;
|
|
|
|
for (j=0; j<MATROSKA_VIDEO_STEREO_MODE_COUNT; j++)
|
|
if (!strcmp(tag->value, ff_matroska_video_stereo_mode[j])){
|
|
st_mode = j;
|
|
break;
|
|
}
|
|
|
|
if ((mkv->mode == MODE_WEBM && st_mode > 3 && st_mode != 11)
|
|
|| st_mode >= MATROSKA_VIDEO_STEREO_MODE_COUNT) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"The specified stereo mode is not valid.\n");
|
|
return AVERROR(EINVAL);
|
|
} else
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, st_mode);
|
|
|
|
switch (st_mode) {
|
|
case 1:
|
|
case 8:
|
|
case 9:
|
|
case 11:
|
|
display_width_div = 2;
|
|
break;
|
|
case 2:
|
|
case 3:
|
|
case 6:
|
|
case 7:
|
|
display_height_div = 2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) ||
|
|
(tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) ||
|
|
(codec->pix_fmt == AV_PIX_FMT_YUVA420P)) {
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEOALPHAMODE, 1);
|
|
}
|
|
|
|
if (st->sample_aspect_ratio.num) {
|
|
int64_t d_width = av_rescale(codec->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
|
|
if (d_width > INT_MAX) {
|
|
av_log(s, AV_LOG_ERROR, "Overflow in display width\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height / display_height_div);
|
|
} else if (display_width_div != 1 || display_height_div != 1) {
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , codec->width / display_width_div);
|
|
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height / display_height_div);
|
|
}
|
|
|
|
if (codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
|
|
uint32_t color_space = av_le2ne32(codec->codec_tag);
|
|
put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space));
|
|
}
|
|
end_ebml_master(pb, subinfo);
|
|
break;
|
|
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_AUDIO);
|
|
|
|
if (!native_id)
|
|
// no mkv-specific ID, use ACM mode
|
|
put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");
|
|
|
|
subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
|
|
put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , codec->channels);
|
|
put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
|
|
if (output_sample_rate)
|
|
put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
|
|
if (bit_depth)
|
|
put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth);
|
|
end_ebml_master(pb, subinfo);
|
|
break;
|
|
|
|
case AVMEDIA_TYPE_SUBTITLE:
|
|
if (!native_id) {
|
|
av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", codec->codec_id);
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
|
|
if (mkv->mode != MODE_WEBM || codec->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 || codec->codec_id != AV_CODEC_ID_WEBVTT) {
|
|
ret = mkv_write_codecprivate(s, pb, codec, native_id, qt_id);
|
|
if (ret < 0) return ret;
|
|
}
|
|
|
|
end_ebml_master(pb, track);
|
|
|
|
// ms precision is the de-facto standard timescale for mkv files
|
|
avpriv_set_pts_info(st, 64, 1, 1000);
|
|
}
|
|
end_ebml_master(pb, tracks);
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_chapters(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
ebml_master chapters, editionentry;
|
|
AVRational scale = {1, 1E9};
|
|
int i, ret;
|
|
|
|
if (!s->nb_chapters || mkv->wrote_chapters)
|
|
return 0;
|
|
|
|
ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CHAPTERS, avio_tell(pb));
|
|
if (ret < 0) return ret;
|
|
|
|
chapters = start_ebml_master(pb, MATROSKA_ID_CHAPTERS , 0);
|
|
editionentry = start_ebml_master(pb, MATROSKA_ID_EDITIONENTRY, 0);
|
|
put_ebml_uint(pb, MATROSKA_ID_EDITIONFLAGDEFAULT, 1);
|
|
put_ebml_uint(pb, MATROSKA_ID_EDITIONFLAGHIDDEN , 0);
|
|
for (i = 0; i < s->nb_chapters; i++) {
|
|
ebml_master chapteratom, chapterdisplay;
|
|
AVChapter *c = s->chapters[i];
|
|
AVDictionaryEntry *t = NULL;
|
|
|
|
chapteratom = start_ebml_master(pb, MATROSKA_ID_CHAPTERATOM, 0);
|
|
put_ebml_uint(pb, MATROSKA_ID_CHAPTERUID, c->id + mkv->chapter_id_offset);
|
|
put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMESTART,
|
|
av_rescale_q(c->start, c->time_base, scale));
|
|
put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMEEND,
|
|
av_rescale_q(c->end, c->time_base, scale));
|
|
put_ebml_uint(pb, MATROSKA_ID_CHAPTERFLAGHIDDEN , 0);
|
|
put_ebml_uint(pb, MATROSKA_ID_CHAPTERFLAGENABLED, 1);
|
|
if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
|
|
chapterdisplay = start_ebml_master(pb, MATROSKA_ID_CHAPTERDISPLAY, 0);
|
|
put_ebml_string(pb, MATROSKA_ID_CHAPSTRING, t->value);
|
|
put_ebml_string(pb, MATROSKA_ID_CHAPLANG , "und");
|
|
end_ebml_master(pb, chapterdisplay);
|
|
}
|
|
end_ebml_master(pb, chapteratom);
|
|
}
|
|
end_ebml_master(pb, editionentry);
|
|
end_ebml_master(pb, chapters);
|
|
|
|
mkv->wrote_chapters = 1;
|
|
return 0;
|
|
}
|
|
|
|
static void mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t)
|
|
{
|
|
uint8_t *key = av_strdup(t->key);
|
|
uint8_t *p = key;
|
|
const uint8_t *lang = NULL;
|
|
ebml_master tag;
|
|
|
|
if ((p = strrchr(p, '-')) &&
|
|
(lang = av_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL)))
|
|
*p = 0;
|
|
|
|
p = key;
|
|
while (*p) {
|
|
if (*p == ' ')
|
|
*p = '_';
|
|
else if (*p >= 'a' && *p <= 'z')
|
|
*p -= 'a' - 'A';
|
|
p++;
|
|
}
|
|
|
|
tag = start_ebml_master(pb, MATROSKA_ID_SIMPLETAG, 0);
|
|
put_ebml_string(pb, MATROSKA_ID_TAGNAME, key);
|
|
if (lang)
|
|
put_ebml_string(pb, MATROSKA_ID_TAGLANG, lang);
|
|
put_ebml_string(pb, MATROSKA_ID_TAGSTRING, t->value);
|
|
end_ebml_master(pb, tag);
|
|
|
|
av_freep(&key);
|
|
}
|
|
|
|
static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid,
|
|
unsigned int uid, ebml_master *tags)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
ebml_master tag, targets;
|
|
AVDictionaryEntry *t = NULL;
|
|
int ret;
|
|
|
|
if (!tags->pos) {
|
|
ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TAGS, avio_tell(s->pb));
|
|
if (ret < 0) return ret;
|
|
|
|
*tags = start_ebml_master(s->pb, MATROSKA_ID_TAGS, 0);
|
|
}
|
|
|
|
tag = start_ebml_master(s->pb, MATROSKA_ID_TAG, 0);
|
|
targets = start_ebml_master(s->pb, MATROSKA_ID_TAGTARGETS, 0);
|
|
if (elementid)
|
|
put_ebml_uint(s->pb, elementid, uid);
|
|
end_ebml_master(s->pb, targets);
|
|
|
|
while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX)))
|
|
if (av_strcasecmp(t->key, "title") && av_strcasecmp(t->key, "stereo_mode"))
|
|
mkv_write_simpletag(s->pb, t);
|
|
|
|
end_ebml_master(s->pb, tag);
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_check_tag(AVDictionary *m)
|
|
{
|
|
AVDictionaryEntry *t = NULL;
|
|
|
|
while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX)))
|
|
if (av_strcasecmp(t->key, "title") && av_strcasecmp(t->key, "stereo_mode"))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_tags(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
ebml_master tags = {0};
|
|
int i, ret;
|
|
|
|
ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL);
|
|
|
|
if (mkv_check_tag(s->metadata)) {
|
|
ret = mkv_write_tag(s, s->metadata, 0, 0, &tags);
|
|
if (ret < 0) return ret;
|
|
}
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
|
|
if (!mkv_check_tag(st->metadata))
|
|
continue;
|
|
|
|
ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &tags);
|
|
if (ret < 0) return ret;
|
|
}
|
|
|
|
for (i = 0; i < s->nb_chapters; i++) {
|
|
AVChapter *ch = s->chapters[i];
|
|
|
|
if (!mkv_check_tag(ch->metadata))
|
|
continue;
|
|
|
|
ret = mkv_write_tag(s, ch->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID, ch->id + mkv->chapter_id_offset, &tags);
|
|
if (ret < 0) return ret;
|
|
}
|
|
|
|
if (tags.pos)
|
|
end_ebml_master(s->pb, tags);
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_attachments(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
ebml_master attachments;
|
|
AVLFG c;
|
|
int i, ret;
|
|
|
|
if (!mkv->have_attachments)
|
|
return 0;
|
|
|
|
av_lfg_init(&c, av_get_random_seed());
|
|
|
|
ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_ATTACHMENTS, avio_tell(pb));
|
|
if (ret < 0) return ret;
|
|
|
|
attachments = start_ebml_master(pb, MATROSKA_ID_ATTACHMENTS, 0);
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
ebml_master attached_file;
|
|
AVDictionaryEntry *t;
|
|
const char *mimetype = NULL;
|
|
uint64_t fileuid;
|
|
|
|
if (st->codec->codec_type != AVMEDIA_TYPE_ATTACHMENT)
|
|
continue;
|
|
|
|
attached_file = start_ebml_master(pb, MATROSKA_ID_ATTACHEDFILE, 0);
|
|
|
|
if (t = av_dict_get(st->metadata, "title", NULL, 0))
|
|
put_ebml_string(pb, MATROSKA_ID_FILEDESC, t->value);
|
|
if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) {
|
|
av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
put_ebml_string(pb, MATROSKA_ID_FILENAME, t->value);
|
|
if (t = av_dict_get(st->metadata, "mimetype", NULL, 0))
|
|
mimetype = t->value;
|
|
else if (st->codec->codec_id != AV_CODEC_ID_NONE ) {
|
|
int i;
|
|
for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++)
|
|
if (ff_mkv_mime_tags[i].id == st->codec->codec_id) {
|
|
mimetype = ff_mkv_mime_tags[i].str;
|
|
break;
|
|
}
|
|
}
|
|
if (!mimetype) {
|
|
av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and "
|
|
"it cannot be deduced from the codec id.\n", i);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (st->codec->flags & CODEC_FLAG_BITEXACT) {
|
|
struct AVSHA *sha = av_sha_alloc();
|
|
uint8_t digest[20];
|
|
if (!sha)
|
|
return AVERROR(ENOMEM);
|
|
av_sha_init(sha, 160);
|
|
av_sha_update(sha, st->codec->extradata, st->codec->extradata_size);
|
|
av_sha_final(sha, digest);
|
|
av_free(sha);
|
|
fileuid = AV_RL64(digest);
|
|
} else {
|
|
fileuid = av_lfg_get(&c);
|
|
}
|
|
av_log(s, AV_LOG_VERBOSE, "Using %.16"PRIx64" for attachment %d\n",
|
|
fileuid, i);
|
|
|
|
put_ebml_string(pb, MATROSKA_ID_FILEMIMETYPE, mimetype);
|
|
put_ebml_binary(pb, MATROSKA_ID_FILEDATA, st->codec->extradata, st->codec->extradata_size);
|
|
put_ebml_uint(pb, MATROSKA_ID_FILEUID, fileuid);
|
|
end_ebml_master(pb, attached_file);
|
|
}
|
|
end_ebml_master(pb, attachments);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_header(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
ebml_master ebml_header, segment_info;
|
|
AVDictionaryEntry *tag;
|
|
int ret, i;
|
|
|
|
if (!strcmp(s->oformat->name, "webm")) mkv->mode = MODE_WEBM;
|
|
else mkv->mode = MODE_MATROSKAv2;
|
|
|
|
if (s->avoid_negative_ts < 0)
|
|
s->avoid_negative_ts = 1;
|
|
|
|
for (i = 0; i < s->nb_streams; i++)
|
|
if (s->streams[i]->codec->codec_id == AV_CODEC_ID_ATRAC3 ||
|
|
s->streams[i]->codec->codec_id == AV_CODEC_ID_COOK ||
|
|
s->streams[i]->codec->codec_id == AV_CODEC_ID_RA_288 ||
|
|
s->streams[i]->codec->codec_id == AV_CODEC_ID_SIPR ||
|
|
s->streams[i]->codec->codec_id == AV_CODEC_ID_RV10 ||
|
|
s->streams[i]->codec->codec_id == AV_CODEC_ID_RV20) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"The Matroska muxer does not yet support muxing %s\n",
|
|
avcodec_get_name(s->streams[i]->codec->codec_id));
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
mkv->tracks = av_mallocz(s->nb_streams * sizeof(*mkv->tracks));
|
|
if (!mkv->tracks)
|
|
return AVERROR(ENOMEM);
|
|
|
|
ebml_header = start_ebml_master(pb, EBML_ID_HEADER, 0);
|
|
put_ebml_uint (pb, EBML_ID_EBMLVERSION , 1);
|
|
put_ebml_uint (pb, EBML_ID_EBMLREADVERSION , 1);
|
|
put_ebml_uint (pb, EBML_ID_EBMLMAXIDLENGTH , 4);
|
|
put_ebml_uint (pb, EBML_ID_EBMLMAXSIZELENGTH , 8);
|
|
put_ebml_string (pb, EBML_ID_DOCTYPE , s->oformat->name);
|
|
put_ebml_uint (pb, EBML_ID_DOCTYPEVERSION , 4);
|
|
put_ebml_uint (pb, EBML_ID_DOCTYPEREADVERSION , 2);
|
|
end_ebml_master(pb, ebml_header);
|
|
|
|
mkv->segment = start_ebml_master(pb, MATROSKA_ID_SEGMENT, 0);
|
|
mkv->segment_offset = avio_tell(pb);
|
|
|
|
// we write 2 seek heads - one at the end of the file to point to each
|
|
// cluster, and one at the beginning to point to all other level one
|
|
// elements (including the seek head at the end of the file), which
|
|
// isn't more than 10 elements if we only write one of each other
|
|
// currently defined level 1 element
|
|
mkv->main_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 10);
|
|
if (!mkv->main_seekhead)
|
|
return AVERROR(ENOMEM);
|
|
|
|
ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_INFO, avio_tell(pb));
|
|
if (ret < 0) return ret;
|
|
|
|
segment_info = start_ebml_master(pb, MATROSKA_ID_INFO, 0);
|
|
put_ebml_uint(pb, MATROSKA_ID_TIMECODESCALE, 1000000);
|
|
if ((tag = av_dict_get(s->metadata, "title", NULL, 0)))
|
|
put_ebml_string(pb, MATROSKA_ID_TITLE, tag->value);
|
|
if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
|
|
uint32_t segment_uid[4];
|
|
AVLFG lfg;
|
|
|
|
av_lfg_init(&lfg, av_get_random_seed());
|
|
|
|
for (i = 0; i < 4; i++)
|
|
segment_uid[i] = av_lfg_get(&lfg);
|
|
|
|
put_ebml_string(pb, MATROSKA_ID_MUXINGAPP , LIBAVFORMAT_IDENT);
|
|
put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, LIBAVFORMAT_IDENT);
|
|
put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
|
|
} else {
|
|
const char *ident = "Lavf";
|
|
put_ebml_string(pb, MATROSKA_ID_MUXINGAPP , ident);
|
|
put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, ident);
|
|
}
|
|
|
|
if (tag = av_dict_get(s->metadata, "creation_time", NULL, 0)) {
|
|
// Adjust time so it's relative to 2001-01-01 and convert to nanoseconds.
|
|
int64_t date_utc = (ff_iso8601_to_unix_time(tag->value) - 978307200) * 1000000000;
|
|
uint8_t date_utc_buf[8];
|
|
AV_WB64(date_utc_buf, date_utc);
|
|
put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8);
|
|
}
|
|
|
|
// reserve space for the duration
|
|
mkv->duration = 0;
|
|
mkv->duration_offset = avio_tell(pb);
|
|
put_ebml_void(pb, 11); // assumes double-precision float to be written
|
|
end_ebml_master(pb, segment_info);
|
|
|
|
ret = mkv_write_tracks(s);
|
|
if (ret < 0) return ret;
|
|
|
|
for (i = 0; i < s->nb_chapters; i++)
|
|
mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id);
|
|
|
|
if (mkv->mode != MODE_WEBM) {
|
|
ret = mkv_write_chapters(s);
|
|
if (ret < 0) return ret;
|
|
|
|
ret = mkv_write_tags(s);
|
|
if (ret < 0) return ret;
|
|
|
|
ret = mkv_write_attachments(s);
|
|
if (ret < 0) return ret;
|
|
}
|
|
|
|
if (!s->pb->seekable)
|
|
mkv_write_seekhead(pb, mkv->main_seekhead);
|
|
|
|
mkv->cues = mkv_start_cues(mkv->segment_offset);
|
|
if (mkv->cues == NULL)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (pb->seekable && mkv->reserve_cues_space) {
|
|
mkv->cues_pos = avio_tell(pb);
|
|
put_ebml_void(pb, mkv->reserve_cues_space);
|
|
}
|
|
|
|
av_init_packet(&mkv->cur_audio_pkt);
|
|
mkv->cur_audio_pkt.size = 0;
|
|
mkv->cluster_pos = -1;
|
|
|
|
avio_flush(pb);
|
|
|
|
// start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
|
|
// after 4k and on a keyframe
|
|
if (pb->seekable) {
|
|
if (mkv->cluster_time_limit < 0)
|
|
mkv->cluster_time_limit = 5000;
|
|
if (mkv->cluster_size_limit < 0)
|
|
mkv->cluster_size_limit = 5 * 1024 * 1024;
|
|
} else {
|
|
if (mkv->cluster_time_limit < 0)
|
|
mkv->cluster_time_limit = 1000;
|
|
if (mkv->cluster_size_limit < 0)
|
|
mkv->cluster_size_limit = 32 * 1024;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_blockgroup_size(int pkt_size)
|
|
{
|
|
int size = pkt_size + 4;
|
|
size += ebml_num_size(size);
|
|
size += 2; // EBML ID for block and block duration
|
|
size += 8; // max size of block duration
|
|
size += ebml_num_size(size);
|
|
size += 1; // blockgroup EBML ID
|
|
return size;
|
|
}
|
|
|
|
static int ass_get_duration(const uint8_t *p)
|
|
{
|
|
int sh, sm, ss, sc, eh, em, es, ec;
|
|
uint64_t start, end;
|
|
|
|
if (sscanf(p, "%*[^,],%d:%d:%d%*c%d,%d:%d:%d%*c%d",
|
|
&sh, &sm, &ss, &sc, &eh, &em, &es, &ec) != 8)
|
|
return 0;
|
|
start = 3600000LL*sh + 60000LL*sm + 1000LL*ss + 10LL*sc;
|
|
end = 3600000LL*eh + 60000LL*em + 1000LL*es + 10LL*ec;
|
|
return end - start;
|
|
}
|
|
|
|
#if FF_API_ASS_SSA
|
|
static int mkv_write_ass_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
int i, layer = 0, max_duration = 0, size, line_size, data_size = pkt->size;
|
|
uint8_t *start, *end, *data = pkt->data;
|
|
ebml_master blockgroup;
|
|
char buffer[2048];
|
|
|
|
while (data_size) {
|
|
int duration = ass_get_duration(data);
|
|
max_duration = FFMAX(duration, max_duration);
|
|
end = memchr(data, '\n', data_size);
|
|
size = line_size = end ? end-data+1 : data_size;
|
|
size -= end ? (end[-1]=='\r')+1 : 0;
|
|
start = data;
|
|
for (i=0; i<3; i++, start++)
|
|
if (!(start = memchr(start, ',', size-(start-data))))
|
|
return max_duration;
|
|
size -= start - data;
|
|
sscanf(data, "Dialogue: %d,", &layer);
|
|
i = snprintf(buffer, sizeof(buffer), "%"PRId64",%d,",
|
|
s->streams[pkt->stream_index]->nb_frames, layer);
|
|
size = FFMIN(i+size, sizeof(buffer));
|
|
memcpy(buffer+i, start, size-i);
|
|
|
|
av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
|
|
"pts %" PRId64 ", duration %d\n",
|
|
avio_tell(pb), size, pkt->pts, duration);
|
|
blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, mkv_blockgroup_size(size));
|
|
put_ebml_id(pb, MATROSKA_ID_BLOCK);
|
|
put_ebml_num(pb, size+4, 0);
|
|
avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
|
|
avio_wb16(pb, pkt->pts - mkv->cluster_pts);
|
|
avio_w8(pb, 0);
|
|
avio_write(pb, buffer, size);
|
|
put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration);
|
|
end_ebml_master(pb, blockgroup);
|
|
|
|
data += line_size;
|
|
data_size -= line_size;
|
|
}
|
|
|
|
return max_duration;
|
|
}
|
|
#endif
|
|
|
|
static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
|
|
{
|
|
uint8_t *dst;
|
|
int srclen = *size;
|
|
int offset = 0;
|
|
int ret;
|
|
|
|
dst = av_malloc(srclen);
|
|
if (!dst)
|
|
return AVERROR(ENOMEM);
|
|
|
|
while (srclen >= WV_HEADER_SIZE) {
|
|
WvHeader header;
|
|
|
|
ret = ff_wv_parse_header(&header, src);
|
|
if (ret < 0)
|
|
goto fail;
|
|
src += WV_HEADER_SIZE;
|
|
srclen -= WV_HEADER_SIZE;
|
|
|
|
if (srclen < header.blocksize) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
if (header.initial) {
|
|
AV_WL32(dst + offset, header.samples);
|
|
offset += 4;
|
|
}
|
|
AV_WL32(dst + offset, header.flags);
|
|
AV_WL32(dst + offset + 4, header.crc);
|
|
offset += 8;
|
|
|
|
if (!(header.initial && header.final)) {
|
|
AV_WL32(dst + offset, header.blocksize);
|
|
offset += 4;
|
|
}
|
|
|
|
memcpy(dst + offset, src, header.blocksize);
|
|
src += header.blocksize;
|
|
srclen -= header.blocksize;
|
|
offset += header.blocksize;
|
|
}
|
|
|
|
*pdst = dst;
|
|
*size = offset;
|
|
|
|
return 0;
|
|
fail:
|
|
av_freep(&dst);
|
|
return ret;
|
|
}
|
|
|
|
static void mkv_write_block(AVFormatContext *s, AVIOContext *pb,
|
|
unsigned int blockid, AVPacket *pkt, int flags)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
|
|
uint8_t *data = NULL, *side_data = NULL;
|
|
int offset = 0, size = pkt->size, side_data_size = 0;
|
|
int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
|
|
uint64_t additional_id = 0, discard_padding = 0;
|
|
ebml_master block_group, block_additions, block_more;
|
|
|
|
av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
|
|
"pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n",
|
|
avio_tell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration, flags);
|
|
if (codec->codec_id == AV_CODEC_ID_H264 && codec->extradata_size > 0 &&
|
|
(AV_RB24(codec->extradata) == 1 || AV_RB32(codec->extradata) == 1))
|
|
ff_avc_parse_nal_units_buf(pkt->data, &data, &size);
|
|
else if (codec->codec_id == AV_CODEC_ID_WAVPACK) {
|
|
int ret = mkv_strip_wavpack(pkt->data, &data, &size);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Error stripping a WavPack packet.\n");
|
|
return;
|
|
}
|
|
} else
|
|
data = pkt->data;
|
|
|
|
if (codec->codec_id == AV_CODEC_ID_PRORES) {
|
|
/* 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, codec->sample_rate},
|
|
(AVRational){1, 1000000000});
|
|
}
|
|
|
|
side_data = av_packet_get_side_data(pkt,
|
|
AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
|
|
&side_data_size);
|
|
if (side_data) {
|
|
additional_id = AV_RB64(side_data);
|
|
side_data += 8;
|
|
side_data_size -= 8;
|
|
}
|
|
|
|
if ((side_data_size && additional_id == 1) || discard_padding) {
|
|
block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0);
|
|
blockid = MATROSKA_ID_BLOCK;
|
|
}
|
|
|
|
put_ebml_id(pb, blockid);
|
|
put_ebml_num(pb, size+4, 0);
|
|
avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
|
|
avio_wb16(pb, ts - mkv->cluster_pts);
|
|
avio_w8(pb, flags);
|
|
avio_write(pb, data + offset, size);
|
|
if (data != pkt->data)
|
|
av_free(data);
|
|
|
|
if (discard_padding) {
|
|
put_ebml_uint(pb, MATROSKA_ID_DISCARDPADDING, discard_padding);
|
|
}
|
|
|
|
if (side_data_size && additional_id == 1) {
|
|
block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0);
|
|
block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0);
|
|
put_ebml_uint(pb, MATROSKA_ID_BLOCKADDID, 1);
|
|
put_ebml_id(pb, MATROSKA_ID_BLOCKADDITIONAL);
|
|
put_ebml_num(pb, side_data_size, 0);
|
|
avio_write(pb, side_data, side_data_size);
|
|
end_ebml_master(pb, block_more);
|
|
end_ebml_master(pb, block_additions);
|
|
}
|
|
if ((side_data_size && additional_id == 1) || discard_padding) {
|
|
end_ebml_master(pb, block_group);
|
|
}
|
|
}
|
|
|
|
static int srt_get_duration(uint8_t **buf)
|
|
{
|
|
int i, duration = 0;
|
|
|
|
for (i=0; i<2 && !duration; i++) {
|
|
int s_hour, s_min, s_sec, s_hsec, e_hour, e_min, e_sec, e_hsec;
|
|
if (sscanf(*buf, "%d:%2d:%2d%*1[,.]%3d --> %d:%2d:%2d%*1[,.]%3d",
|
|
&s_hour, &s_min, &s_sec, &s_hsec,
|
|
&e_hour, &e_min, &e_sec, &e_hsec) == 8) {
|
|
s_min += 60*s_hour; e_min += 60*e_hour;
|
|
s_sec += 60*s_min; e_sec += 60*e_min;
|
|
s_hsec += 1000*s_sec; e_hsec += 1000*e_sec;
|
|
duration = e_hsec - s_hsec;
|
|
}
|
|
*buf += ff_subtitles_next_line(*buf);
|
|
}
|
|
return duration;
|
|
}
|
|
|
|
static int mkv_write_srt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
|
|
{
|
|
ebml_master blockgroup;
|
|
AVPacket pkt2 = *pkt;
|
|
int64_t duration = srt_get_duration(&pkt2.data);
|
|
pkt2.size -= pkt2.data - pkt->data;
|
|
|
|
blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP,
|
|
mkv_blockgroup_size(pkt2.size));
|
|
mkv_write_block(s, pb, MATROSKA_ID_BLOCK, &pkt2, 0);
|
|
put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration);
|
|
end_ebml_master(pb, blockgroup);
|
|
|
|
return duration;
|
|
}
|
|
|
|
static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
ebml_master blockgroup;
|
|
int id_size, settings_size, size;
|
|
uint8_t *id, *settings;
|
|
int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
|
|
const int flags = 0;
|
|
|
|
id_size = 0;
|
|
id = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_IDENTIFIER,
|
|
&id_size);
|
|
|
|
settings_size = 0;
|
|
settings = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_SETTINGS,
|
|
&settings_size);
|
|
|
|
size = id_size + 1 + settings_size + 1 + pkt->size;
|
|
|
|
av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
|
|
"pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n",
|
|
avio_tell(pb), size, pkt->pts, pkt->dts, pkt->duration, flags);
|
|
|
|
blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, mkv_blockgroup_size(size));
|
|
|
|
put_ebml_id(pb, MATROSKA_ID_BLOCK);
|
|
put_ebml_num(pb, size+4, 0);
|
|
avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
|
|
avio_wb16(pb, ts - mkv->cluster_pts);
|
|
avio_w8(pb, flags);
|
|
avio_printf(pb, "%.*s\n%.*s\n%.*s", id_size, id, settings_size, settings, pkt->size, pkt->data);
|
|
|
|
put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, pkt->duration);
|
|
end_ebml_master(pb, blockgroup);
|
|
|
|
return pkt->duration;
|
|
}
|
|
|
|
static void mkv_flush_dynbuf(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
int bufsize;
|
|
uint8_t *dyn_buf;
|
|
|
|
if (!mkv->dyn_bc)
|
|
return;
|
|
|
|
bufsize = avio_close_dyn_buf(mkv->dyn_bc, &dyn_buf);
|
|
avio_write(s->pb, dyn_buf, bufsize);
|
|
av_free(dyn_buf);
|
|
mkv->dyn_bc = NULL;
|
|
}
|
|
|
|
static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
|
|
int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
|
|
int duration = pkt->duration;
|
|
int ret;
|
|
int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
|
|
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);
|
|
}
|
|
|
|
if (!s->pb->seekable) {
|
|
if (!mkv->dyn_bc) {
|
|
if ((ret = avio_open_dyn_buf(&mkv->dyn_bc)) < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Failed to open dynamic buffer\n");
|
|
return ret;
|
|
}
|
|
}
|
|
pb = mkv->dyn_bc;
|
|
}
|
|
|
|
if (mkv->cluster_pos == -1) {
|
|
mkv->cluster_pos = avio_tell(s->pb);
|
|
mkv->cluster = start_ebml_master(pb, MATROSKA_ID_CLUSTER, 0);
|
|
put_ebml_uint(pb, MATROSKA_ID_CLUSTERTIMECODE, FFMAX(0, ts));
|
|
mkv->cluster_pts = FFMAX(0, ts);
|
|
}
|
|
|
|
relative_packet_pos = avio_tell(s->pb) - mkv->cluster.pos;
|
|
|
|
if (codec->codec_type != AVMEDIA_TYPE_SUBTITLE) {
|
|
mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe << 7);
|
|
#if FF_API_ASS_SSA
|
|
} else if (codec->codec_id == AV_CODEC_ID_SSA) {
|
|
duration = mkv_write_ass_blocks(s, pb, pkt);
|
|
#endif
|
|
} else if (codec->codec_id == AV_CODEC_ID_SRT) {
|
|
duration = mkv_write_srt_blocks(s, pb, pkt);
|
|
} else if (codec->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));
|
|
/* For backward compatibility, prefer convergence_duration. */
|
|
if (pkt->convergence_duration > 0) {
|
|
duration = pkt->convergence_duration;
|
|
}
|
|
mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 0);
|
|
put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration);
|
|
end_ebml_master(pb, blockgroup);
|
|
}
|
|
|
|
if ((codec->codec_type == AVMEDIA_TYPE_VIDEO && keyframe) || codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
|
|
ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, ts, mkv->cluster_pos, relative_packet_pos,
|
|
codec->codec_type == AVMEDIA_TYPE_SUBTITLE ? duration : -1);
|
|
if (ret < 0) return ret;
|
|
}
|
|
|
|
mkv->duration = FFMAX(mkv->duration, ts + duration);
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
int codec_type = s->streams[pkt->stream_index]->codec->codec_type;
|
|
int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
|
|
int cluster_size;
|
|
int64_t cluster_time;
|
|
AVIOContext *pb;
|
|
int ret;
|
|
|
|
if (mkv->tracks[pkt->stream_index].write_dts)
|
|
cluster_time = pkt->dts - mkv->cluster_pts;
|
|
else
|
|
cluster_time = pkt->pts - mkv->cluster_pts;
|
|
|
|
// start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
|
|
// after 4k and on a keyframe
|
|
if (s->pb->seekable) {
|
|
pb = s->pb;
|
|
cluster_size = avio_tell(pb) - mkv->cluster_pos;
|
|
} else {
|
|
pb = mkv->dyn_bc;
|
|
cluster_size = avio_tell(pb);
|
|
}
|
|
|
|
if (mkv->cluster_pos != -1 &&
|
|
(cluster_size > mkv->cluster_size_limit ||
|
|
cluster_time > mkv->cluster_time_limit ||
|
|
(codec_type == AVMEDIA_TYPE_VIDEO && keyframe &&
|
|
cluster_size > 4 * 1024))) {
|
|
av_log(s, AV_LOG_DEBUG, "Starting new cluster at offset %" PRIu64
|
|
" bytes, pts %" PRIu64 "dts %" PRIu64 "\n",
|
|
avio_tell(pb), pkt->pts, pkt->dts);
|
|
end_ebml_master(pb, mkv->cluster);
|
|
mkv->cluster_pos = -1;
|
|
if (mkv->dyn_bc)
|
|
mkv_flush_dynbuf(s);
|
|
avio_flush(s->pb);
|
|
}
|
|
|
|
// check if we have an audio packet cached
|
|
if (mkv->cur_audio_pkt.size > 0) {
|
|
ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt);
|
|
av_free_packet(&mkv->cur_audio_pkt);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Could not write cached audio packet ret:%d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
// buffer an audio packet to ensure the packet containing the video
|
|
// keyframe's timecode is contained in the same cluster for WebM
|
|
if (codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
mkv->cur_audio_pkt = *pkt;
|
|
if (pkt->buf) {
|
|
mkv->cur_audio_pkt.buf = av_buffer_ref(pkt->buf);
|
|
ret = mkv->cur_audio_pkt.buf ? 0 : AVERROR(ENOMEM);
|
|
} else
|
|
ret = av_dup_packet(&mkv->cur_audio_pkt);
|
|
if (mkv->cur_audio_pkt.side_data_elems > 0) {
|
|
ret = av_copy_packet_side_data(&mkv->cur_audio_pkt, &mkv->cur_audio_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;
|
|
AVIOContext *pb;
|
|
if (s->pb->seekable)
|
|
pb = s->pb;
|
|
else
|
|
pb = mkv->dyn_bc;
|
|
if (!pkt) {
|
|
if (mkv->cluster_pos != -1) {
|
|
av_log(s, AV_LOG_DEBUG, "Flushing cluster at offset %" PRIu64
|
|
" bytes\n", avio_tell(pb));
|
|
end_ebml_master(pb, mkv->cluster);
|
|
mkv->cluster_pos = -1;
|
|
if (mkv->dyn_bc)
|
|
mkv_flush_dynbuf(s);
|
|
avio_flush(s->pb);
|
|
}
|
|
return 0;
|
|
}
|
|
return mkv_write_packet(s, pkt);
|
|
}
|
|
|
|
static int mkv_write_trailer(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int64_t currentpos, cuespos;
|
|
int ret;
|
|
|
|
// check if we have an audio packet cached
|
|
if (mkv->cur_audio_pkt.size > 0) {
|
|
ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt);
|
|
av_free_packet(&mkv->cur_audio_pkt);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Could not write cached audio packet ret:%d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (mkv->dyn_bc) {
|
|
end_ebml_master(mkv->dyn_bc, mkv->cluster);
|
|
mkv_flush_dynbuf(s);
|
|
} else if (mkv->cluster_pos != -1) {
|
|
end_ebml_master(pb, mkv->cluster);
|
|
}
|
|
|
|
if (mkv->mode != MODE_WEBM) {
|
|
ret = mkv_write_chapters(s);
|
|
if (ret < 0) return ret;
|
|
}
|
|
|
|
if (pb->seekable) {
|
|
if (mkv->cues->num_entries) {
|
|
if (mkv->reserve_cues_space) {
|
|
int64_t cues_end;
|
|
|
|
currentpos = avio_tell(pb);
|
|
avio_seek(pb, mkv->cues_pos, SEEK_SET);
|
|
|
|
cuespos = mkv_write_cues(pb, mkv->cues, mkv->tracks, s->nb_streams);
|
|
cues_end = avio_tell(pb);
|
|
if (cues_end > cuespos + mkv->reserve_cues_space) {
|
|
av_log(s, AV_LOG_ERROR, "Insufficient space reserved for cues: %d "
|
|
"(needed: %"PRId64").\n", mkv->reserve_cues_space,
|
|
cues_end - cuespos);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (cues_end < cuespos + mkv->reserve_cues_space)
|
|
put_ebml_void(pb, mkv->reserve_cues_space - (cues_end - cuespos));
|
|
|
|
avio_seek(pb, currentpos, SEEK_SET);
|
|
} else {
|
|
cuespos = mkv_write_cues(pb, mkv->cues, mkv->tracks, s->nb_streams);
|
|
}
|
|
|
|
ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CUES, cuespos);
|
|
if (ret < 0) return ret;
|
|
}
|
|
|
|
mkv_write_seekhead(pb, mkv->main_seekhead);
|
|
|
|
// update the duration
|
|
av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration);
|
|
currentpos = avio_tell(pb);
|
|
avio_seek(pb, mkv->duration_offset, SEEK_SET);
|
|
put_ebml_float(pb, MATROSKA_ID_DURATION, mkv->duration);
|
|
|
|
avio_seek(pb, currentpos, SEEK_SET);
|
|
}
|
|
|
|
end_ebml_master(pb, mkv->segment);
|
|
av_freep(&mkv->tracks);
|
|
av_freep(&mkv->cues->entries);
|
|
av_freep(&mkv->cues);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
|
|
{
|
|
int i;
|
|
for (i = 0; ff_mkv_codec_tags[i].id != AV_CODEC_ID_NONE; i++)
|
|
if (ff_mkv_codec_tags[i].id == codec_id)
|
|
return 1;
|
|
|
|
if (std_compliance < FF_COMPLIANCE_NORMAL) { // mkv theoretically supports any
|
|
enum AVMediaType type = avcodec_get_type(codec_id); // video/audio through VFW/ACM
|
|
if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const AVCodecTag additional_audio_tags[] = {
|
|
{ AV_CODEC_ID_ALAC, 0XFFFFFFFF },
|
|
{ AV_CODEC_ID_EAC3, 0XFFFFFFFF },
|
|
{ AV_CODEC_ID_MLP, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_OPUS, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_QDM2, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_RA_144, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_RA_288, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_COOK, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_TRUEHD, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_NONE, 0xFFFFFFFF }
|
|
};
|
|
|
|
static const AVCodecTag additional_video_tags[] = {
|
|
{ AV_CODEC_ID_RV10, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_RV20, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_RV30, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_RV40, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_VP9, 0xFFFFFFFF },
|
|
{ AV_CODEC_ID_NONE, 0xFFFFFFFF }
|
|
};
|
|
|
|
#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 },
|
|
{ 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,
|
|
.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, 0
|
|
},
|
|
#if FF_API_ASS_SSA
|
|
.subtitle_codec = AV_CODEC_ID_SSA,
|
|
#else
|
|
.subtitle_codec = AV_CODEC_ID_ASS,
|
|
#endif
|
|
.query_codec = mkv_query_codec,
|
|
.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 = AV_CODEC_ID_VORBIS,
|
|
.video_codec = AV_CODEC_ID_VP8,
|
|
.subtitle_codec = AV_CODEC_ID_WEBVTT,
|
|
.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,
|
|
.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,
|
|
.write_header = mkv_write_header,
|
|
.write_packet = mkv_write_flush_packet,
|
|
.write_trailer = mkv_write_trailer,
|
|
.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
|