mirror of https://git.ffmpeg.org/ffmpeg.git
3680 lines
133 KiB
C
3680 lines
133 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 <stdint.h>
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#include "config_components.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 "dovi_isom.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 "nal.h"
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#include "matroska.h"
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#include "mux.h"
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#include "riff.h"
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#include "version.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/hdr_dynamic_metadata.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/mem.h"
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#include "libavutil/opt.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/pixdesc.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/av1.h"
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#include "libavcodec/bytestream.h"
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#include "libavcodec/codec_desc.h"
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#include "libavcodec/codec_par.h"
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#include "libavcodec/defs.h"
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#include "libavcodec/itut35.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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/* Largest known-length EBML length */
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#define MAX_EBML_LENGTH ((1ULL << 56) - 2)
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/* The dynamic buffer API we rely upon has a limit of INT_MAX;
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* and so has avio_write(). */
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#define MAX_SUPPORTED_EBML_LENGTH FFMIN(MAX_EBML_LENGTH, INT_MAX)
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#define MODE_MATROSKAv2 0x01
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#define MODE_WEBM 0x02
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#define IS_WEBM(mkv) (CONFIG_WEBM_MUXER && CONFIG_MATROSKA_MUXER ? \
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((mkv)->mode == MODE_WEBM) : CONFIG_WEBM_MUXER)
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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 enum EbmlType {
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EBML_UINT,
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EBML_SINT,
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EBML_FLOAT,
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EBML_UID,
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EBML_STR,
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EBML_UTF8 = EBML_STR,
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EBML_BIN,
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EBML_BLOCK, ///< pseudo-type for writing (Simple)Blocks
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EBML_MASTER,
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} EbmlType;
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typedef struct BlockContext {
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struct mkv_track *track;
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const AVPacket *pkt;
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int16_t rel_ts;
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uint8_t flags;
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NALUList h2645_nalu_list;
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} BlockContext;
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typedef struct EbmlMaster {
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int nb_elements; ///< -1 if not finished
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int containing_master; ///< -1 if no parent exists
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} EbmlMaster;
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typedef struct EbmlElement {
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uint32_t id;
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EbmlType type;
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unsigned length_size;
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uint64_t size; ///< excluding id and length field
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union {
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uint64_t uint;
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int64_t sint;
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double f;
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const char *str;
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const uint8_t *bin;
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struct MatroskaMuxContext *mkv; ///< used by EBML_BLOCK
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EbmlMaster master;
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} priv;
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} EbmlElement;
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typedef struct EbmlWriter {
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unsigned nb_elements;
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int current_master_element;
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EbmlElement *elements;
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} EbmlWriter;
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#define EBML_WRITER(max_nb_elems) \
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EbmlElement elements[max_nb_elems]; \
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EbmlWriter writer = (EbmlWriter){ .elements = elements, \
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.current_master_element = -1 }
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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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struct MatroskaMuxContext;
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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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unsigned offset;
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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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uint64_t max_blockaddid;
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int64_t blockadditionmapping_offset;
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int codecpriv_offset;
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unsigned codecpriv_size; ///< size reserved for CodecPrivate excluding header+length field
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int64_t ts_offset;
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uint64_t default_duration_low;
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uint64_t default_duration_high;
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/* This callback will be called twice: First with a NULL AVIOContext
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* to return the size of the (Simple)Block's data via size
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* and a second time with the AVIOContext set when the data
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* shall be written.
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* The callback shall not return an error on the second call. */
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int (*reformat)(struct MatroskaMuxContext *, AVIOContext *,
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const AVPacket *, int *size);
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} mkv_track;
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typedef struct MatroskaMuxContext {
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const AVClass *class;
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AVFormatContext *ctx;
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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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BlockContext cur_block;
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/* Used as temporary buffer to use the minimal amount of bytes
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* to write the length field of EBML Masters.
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* Every user has to reset the buffer after using it and
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* different uses may not overlap. It is currently used in
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* mkv_write_tag(), in mkv_assemble_cues() as well as in
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* mkv_update_codecprivate() and mkv_write_track(). */
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AVIOContext *tmp_bc;
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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 flipped_raw_rgb;
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int default_mode;
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int move_cues_to_front;
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uint32_t segment_uid[4];
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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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/** 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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/** DURATION_STRING_LENGTH must be <= 112 or the containing
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* simpletag will need more than one byte for its length field. */
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#define DURATION_STRING_LENGTH 19
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/** 2 + 1 Simpletag header, 2 + 1 + 8 Name "DURATION", rest for TagString */
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#define DURATION_SIMPLETAG_SIZE (2 + 1 + (2 + 1 + 8) + (2 + 1 + DURATION_STRING_LENGTH))
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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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if (av_builtin_constant_p(bytes) && bytes == 1)
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return;
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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_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 EbmlElement *ebml_writer_add(EbmlWriter *writer,
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uint32_t id, EbmlType type)
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{
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writer->elements[writer->nb_elements].id = id;
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writer->elements[writer->nb_elements].type = type;
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return &writer->elements[writer->nb_elements++];
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}
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static void ebml_writer_open_master(EbmlWriter *writer, uint32_t id)
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{
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EbmlElement *const elem = ebml_writer_add(writer, id, EBML_MASTER);
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EbmlMaster *const master = &elem->priv.master;
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master->containing_master = writer->current_master_element;
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master->nb_elements = -1;
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writer->current_master_element = writer->nb_elements - 1;
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}
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static void ebml_writer_close_master(EbmlWriter *writer)
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{
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EbmlElement *elem;
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av_assert2(writer->current_master_element >= 0);
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av_assert2(writer->current_master_element < writer->nb_elements);
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elem = &writer->elements[writer->current_master_element];
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av_assert2(elem->type == EBML_MASTER);
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av_assert2(elem->priv.master.nb_elements < 0); /* means unset */
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elem->priv.master.nb_elements = writer->nb_elements - writer->current_master_element - 1;
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av_assert2(elem->priv.master.containing_master < 0 ||
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elem->priv.master.containing_master < writer->current_master_element);
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writer->current_master_element = elem->priv.master.containing_master;
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}
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static void ebml_writer_close_or_discard_master(EbmlWriter *writer)
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{
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av_assert2(writer->nb_elements > 0);
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av_assert2(0 <= writer->current_master_element);
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av_assert2(writer->current_master_element < writer->nb_elements);
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if (writer->current_master_element == writer->nb_elements - 1) {
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const EbmlElement *const elem = &writer->elements[writer->nb_elements - 1];
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/* The master element has no children. Discard it. */
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av_assert2(elem->type == EBML_MASTER);
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av_assert2(elem->priv.master.containing_master < 0 ||
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elem->priv.master.containing_master < writer->current_master_element);
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writer->current_master_element = elem->priv.master.containing_master;
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writer->nb_elements--;
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|
return;
|
|
}
|
|
ebml_writer_close_master(writer);
|
|
}
|
|
|
|
static void ebml_writer_add_string(EbmlWriter *writer, uint32_t id,
|
|
const char *str)
|
|
{
|
|
EbmlElement *const elem = ebml_writer_add(writer, id, EBML_STR);
|
|
|
|
elem->priv.str = str;
|
|
}
|
|
|
|
static void ebml_writer_add_bin(EbmlWriter *writer, uint32_t id,
|
|
const uint8_t *data, size_t size)
|
|
{
|
|
EbmlElement *const elem = ebml_writer_add(writer, id, EBML_BIN);
|
|
|
|
#if SIZE_MAX > UINT64_MAX
|
|
size = FFMIN(size, UINT64_MAX);
|
|
#endif
|
|
elem->size = size;
|
|
elem->priv.bin = data;
|
|
}
|
|
|
|
static void ebml_writer_add_float(EbmlWriter *writer, uint32_t id,
|
|
double val)
|
|
{
|
|
EbmlElement *const elem = ebml_writer_add(writer, id, EBML_FLOAT);
|
|
|
|
elem->priv.f = val;
|
|
}
|
|
|
|
static void ebml_writer_add_uid(EbmlWriter *writer, uint32_t id,
|
|
uint64_t val)
|
|
{
|
|
EbmlElement *const elem = ebml_writer_add(writer, id, EBML_UID);
|
|
elem->priv.uint = val;
|
|
}
|
|
|
|
static void ebml_writer_add_uint(EbmlWriter *writer, uint32_t id,
|
|
uint64_t val)
|
|
{
|
|
EbmlElement *elem = ebml_writer_add(writer, id, EBML_UINT);
|
|
elem->priv.uint = val;
|
|
}
|
|
|
|
static void ebml_writer_add_sint(EbmlWriter *writer, uint32_t id,
|
|
int64_t val)
|
|
{
|
|
EbmlElement *elem = ebml_writer_add(writer, id, EBML_SINT);
|
|
elem->priv.sint = val;
|
|
}
|
|
|
|
static void ebml_writer_add_block(EbmlWriter *writer, MatroskaMuxContext *mkv)
|
|
{
|
|
EbmlElement *elem = ebml_writer_add(writer, MATROSKA_ID_BLOCK, EBML_BLOCK);
|
|
elem->priv.mkv = mkv;
|
|
}
|
|
|
|
static int ebml_writer_str_len(EbmlElement *elem)
|
|
{
|
|
size_t len = strlen(elem->priv.str);
|
|
#if SIZE_MAX > UINT64_MAX
|
|
len = FF_MIN(len, UINT64_MAX);
|
|
#endif
|
|
elem->size = len;
|
|
return 0;
|
|
}
|
|
|
|
static av_const int uint_size(uint64_t val)
|
|
{
|
|
int bytes = 0;
|
|
do {
|
|
bytes++;
|
|
} while (val >>= 8);
|
|
return bytes;
|
|
}
|
|
|
|
static int ebml_writer_uint_len(EbmlElement *elem)
|
|
{
|
|
elem->size = uint_size(elem->priv.uint);
|
|
return 0;
|
|
}
|
|
|
|
static av_const int sint_size(int64_t val)
|
|
{
|
|
uint64_t tmp = 2 * (uint64_t)(val < 0 ? val^-1 : val);
|
|
return uint_size(tmp);
|
|
}
|
|
|
|
static int ebml_writer_sint_len(EbmlElement *elem)
|
|
{
|
|
elem->size = sint_size(elem->priv.sint);
|
|
return 0;
|
|
}
|
|
|
|
static int ebml_writer_elem_len(EbmlWriter *writer, EbmlElement *elem,
|
|
int remaining_elems);
|
|
|
|
static int ebml_writer_master_len(EbmlWriter *writer, EbmlElement *elem,
|
|
int remaining_elems)
|
|
{
|
|
int nb_elems = elem->priv.master.nb_elements >= 0 ? elem->priv.master.nb_elements : remaining_elems - 1;
|
|
EbmlElement *const master = elem;
|
|
uint64_t total_size = 0;
|
|
|
|
master->priv.master.nb_elements = nb_elems;
|
|
for (; elem++, nb_elems > 0;) {
|
|
int ret = ebml_writer_elem_len(writer, elem, nb_elems);
|
|
if (ret < 0)
|
|
return ret;
|
|
av_assert2(ret < nb_elems);
|
|
/* No overflow is possible here, as both total_size and elem->size
|
|
* are bounded by MAX_SUPPORTED_EBML_LENGTH. */
|
|
total_size += ebml_id_size(elem->id) + elem->length_size + elem->size;
|
|
if (total_size > MAX_SUPPORTED_EBML_LENGTH)
|
|
return AVERROR(ERANGE);
|
|
nb_elems--; /* consume elem */
|
|
elem += ret, nb_elems -= ret; /* and elem's children */
|
|
}
|
|
master->size = total_size;
|
|
|
|
return master->priv.master.nb_elements;
|
|
}
|
|
|
|
static int ebml_writer_block_len(EbmlElement *elem)
|
|
{
|
|
MatroskaMuxContext *const mkv = elem->priv.mkv;
|
|
BlockContext *const block = &mkv->cur_block;
|
|
mkv_track *const track = block->track;
|
|
const AVPacket *const pkt = block->pkt;
|
|
int err, size;
|
|
|
|
if (track->reformat) {
|
|
err = track->reformat(mkv, NULL, pkt, &size);
|
|
if (err < 0) {
|
|
av_log(mkv->ctx, AV_LOG_ERROR, "Error when reformatting data of "
|
|
"a packet from stream %d.\n", pkt->stream_index);
|
|
return err;
|
|
}
|
|
} else {
|
|
size = pkt->size;
|
|
if (track->offset <= size)
|
|
size -= track->offset;
|
|
}
|
|
elem->size = track->track_num_size + 3U + size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ebml_writer_write_block(const EbmlElement *elem, AVIOContext *pb)
|
|
{
|
|
MatroskaMuxContext *const mkv = elem->priv.mkv;
|
|
BlockContext *const block = &mkv->cur_block;
|
|
mkv_track *const track = block->track;
|
|
const AVPacket *const pkt = block->pkt;
|
|
|
|
put_ebml_num(pb, track->track_num, track->track_num_size);
|
|
avio_wb16(pb, block->rel_ts);
|
|
avio_w8(pb, block->flags);
|
|
|
|
if (track->reformat) {
|
|
int size;
|
|
track->reformat(mkv, pb, pkt, &size);
|
|
} else {
|
|
const uint8_t *data = pkt->data;
|
|
unsigned offset = track->offset <= pkt->size ? track->offset : 0;
|
|
avio_write(pb, data + offset, pkt->size - offset);
|
|
}
|
|
}
|
|
|
|
static int ebml_writer_elem_len(EbmlWriter *writer, EbmlElement *elem,
|
|
int remaining_elems)
|
|
{
|
|
int ret = 0;
|
|
|
|
switch (elem->type) {
|
|
case EBML_FLOAT:
|
|
case EBML_UID:
|
|
elem->size = 8;
|
|
break;
|
|
case EBML_STR:
|
|
ret = ebml_writer_str_len(elem);
|
|
break;
|
|
case EBML_UINT:
|
|
ret = ebml_writer_uint_len(elem);
|
|
break;
|
|
case EBML_SINT:
|
|
ret = ebml_writer_sint_len(elem);
|
|
break;
|
|
case EBML_BLOCK:
|
|
ret = ebml_writer_block_len(elem);
|
|
break;
|
|
case EBML_MASTER:
|
|
ret = ebml_writer_master_len(writer, elem, remaining_elems);
|
|
break;
|
|
}
|
|
if (ret < 0)
|
|
return ret;
|
|
if (elem->size > MAX_SUPPORTED_EBML_LENGTH)
|
|
return AVERROR(ERANGE);
|
|
elem->length_size = ebml_length_size(elem->size);
|
|
return ret; /* number of elements consumed excluding elem itself */
|
|
}
|
|
|
|
static int ebml_writer_elem_write(const EbmlElement *elem, AVIOContext *pb)
|
|
{
|
|
put_ebml_id(pb, elem->id);
|
|
put_ebml_num(pb, elem->size, elem->length_size);
|
|
switch (elem->type) {
|
|
case EBML_UID:
|
|
case EBML_FLOAT: {
|
|
uint64_t val = elem->type == EBML_UID ? elem->priv.uint
|
|
: av_double2int(elem->priv.f);
|
|
avio_wb64(pb, val);
|
|
break;
|
|
}
|
|
case EBML_UINT:
|
|
case EBML_SINT: {
|
|
uint64_t val = elem->type == EBML_UINT ? elem->priv.uint
|
|
: elem->priv.sint;
|
|
for (int i = elem->size; --i >= 0; )
|
|
avio_w8(pb, (uint8_t)(val >> i * 8));
|
|
break;
|
|
}
|
|
case EBML_STR:
|
|
case EBML_BIN: {
|
|
const uint8_t *data = elem->type == EBML_BIN ? elem->priv.bin
|
|
: (const uint8_t*)elem->priv.str;
|
|
avio_write(pb, data, elem->size);
|
|
break;
|
|
}
|
|
case EBML_BLOCK:
|
|
ebml_writer_write_block(elem, pb);
|
|
break;
|
|
case EBML_MASTER: {
|
|
int nb_elems = elem->priv.master.nb_elements;
|
|
|
|
elem++;
|
|
for (int i = 0; i < nb_elems; i++)
|
|
i += ebml_writer_elem_write(elem + i, pb);
|
|
|
|
return nb_elems;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ebml_writer_write(EbmlWriter *writer, AVIOContext *pb)
|
|
{
|
|
int ret = ebml_writer_elem_len(writer, writer->elements,
|
|
writer->nb_elements);
|
|
if (ret < 0)
|
|
return ret;
|
|
ebml_writer_elem_write(writer->elements, pb);
|
|
return 0;
|
|
}
|
|
|
|
static void mkv_add_seekhead_entry(MatroskaMuxContext *mkv, uint32_t elementid,
|
|
uint64_t filepos)
|
|
{
|
|
mkv_seekhead *seekhead = &mkv->seekhead;
|
|
|
|
av_assert1(seekhead->num_entries < MAX_SEEKHEAD_ENTRIES);
|
|
|
|
seekhead->entries[seekhead->num_entries].elementid = elementid;
|
|
seekhead->entries[seekhead->num_entries++].segmentpos = filepos - mkv->segment_offset;
|
|
}
|
|
|
|
static int start_ebml_master_crc32(AVIOContext **dyn_cp, MatroskaMuxContext *mkv)
|
|
{
|
|
int ret;
|
|
|
|
if (!*dyn_cp && (ret = avio_open_dyn_buf(dyn_cp)) < 0)
|
|
return ret;
|
|
|
|
if (mkv->write_crc)
|
|
put_ebml_void(*dyn_cp, 6); /* Reserve space for CRC32 so position/size calculations using avio_tell() take it into account */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp,
|
|
MatroskaMuxContext *mkv, uint32_t id,
|
|
int length_size, int keep_buffer,
|
|
int add_seekentry)
|
|
{
|
|
uint8_t *buf, crc[4];
|
|
int ret, size, skip = 0;
|
|
|
|
size = avio_get_dyn_buf(*dyn_cp, &buf);
|
|
if ((ret = (*dyn_cp)->error) < 0)
|
|
goto fail;
|
|
|
|
if (add_seekentry)
|
|
mkv_add_seekhead_entry(mkv, id, avio_tell(pb));
|
|
|
|
put_ebml_id(pb, id);
|
|
put_ebml_length(pb, size, length_size);
|
|
if (mkv->write_crc) {
|
|
skip = 6; /* Skip reserved 6-byte long void element from the dynamic buffer. */
|
|
AV_WL32(crc, av_crc(av_crc_get_table(AV_CRC_32_IEEE_LE), UINT32_MAX, buf + skip, size - skip) ^ UINT32_MAX);
|
|
put_ebml_binary(pb, EBML_ID_CRC32, crc, sizeof(crc));
|
|
}
|
|
avio_write(pb, buf + skip, size - skip);
|
|
|
|
fail:
|
|
if (keep_buffer) {
|
|
ffio_reset_dyn_buf(*dyn_cp);
|
|
} else {
|
|
ffio_free_dyn_buf(dyn_cp);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Output EBML master. Keep the buffer if seekable, allowing for later updates.
|
|
* Furthermore always add a SeekHead Entry for this element.
|
|
*/
|
|
static int end_ebml_master_crc32_tentatively(AVIOContext *pb,
|
|
ebml_stored_master *elem,
|
|
MatroskaMuxContext *mkv, uint32_t id)
|
|
{
|
|
if (IS_SEEKABLE(pb, mkv)) {
|
|
uint8_t *buf;
|
|
int size = avio_get_dyn_buf(elem->bc, &buf);
|
|
|
|
if (elem->bc->error < 0)
|
|
return elem->bc->error;
|
|
|
|
elem->pos = avio_tell(pb);
|
|
mkv_add_seekhead_entry(mkv, id, elem->pos);
|
|
|
|
put_ebml_id(pb, id);
|
|
put_ebml_length(pb, size, 0);
|
|
avio_write(pb, buf, size);
|
|
|
|
return 0;
|
|
} else
|
|
return end_ebml_master_crc32(pb, &elem->bc, mkv, id, 0, 0, 1);
|
|
}
|
|
|
|
static void put_xiph_size(AVIOContext *pb, int size)
|
|
{
|
|
ffio_fill(pb, 255, size / 255);
|
|
avio_w8(pb, size % 255);
|
|
}
|
|
|
|
/**
|
|
* Free the members allocated in the mux context.
|
|
*/
|
|
static void mkv_deinit(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
|
|
ffio_free_dyn_buf(&mkv->cluster_bc);
|
|
ffio_free_dyn_buf(&mkv->info.bc);
|
|
ffio_free_dyn_buf(&mkv->track.bc);
|
|
ffio_free_dyn_buf(&mkv->tags.bc);
|
|
ffio_free_dyn_buf(&mkv->tmp_bc);
|
|
|
|
av_freep(&mkv->cur_block.h2645_nalu_list.nalus);
|
|
av_freep(&mkv->cues.entries);
|
|
av_freep(&mkv->tracks);
|
|
}
|
|
|
|
/**
|
|
* Initialize the SeekHead element to be ready to index level 1 Matroska
|
|
* elements. Enough space to write MAX_SEEKHEAD_ENTRIES SeekHead entries
|
|
* will be reserved at the current file location.
|
|
*/
|
|
static void mkv_start_seekhead(MatroskaMuxContext *mkv, AVIOContext *pb)
|
|
{
|
|
mkv->seekhead.filepos = avio_tell(pb);
|
|
// 21 bytes max for a Seek entry, 6 bytes max for the SeekHead ID
|
|
// and size, 6 bytes for a CRC32 element, and 2 bytes to guarantee
|
|
// that an EBML void element will fit afterwards
|
|
mkv->seekhead.reserved_size = MAX_SEEKHEAD_ENTRIES * MAX_SEEKENTRY_SIZE + 14;
|
|
put_ebml_void(pb, mkv->seekhead.reserved_size);
|
|
}
|
|
|
|
/**
|
|
* Write the SeekHead to the file at the location reserved for it
|
|
* and seek to destpos afterwards. When error_on_seek_failure
|
|
* is not set, failure to seek to the position designated for the
|
|
* SeekHead is not considered an error and it is presumed that
|
|
* destpos is the current position; failure to seek to destpos
|
|
* afterwards is always an error.
|
|
*
|
|
* @return 0 on success, < 0 on error.
|
|
*/
|
|
static int mkv_write_seekhead(AVIOContext *pb, MatroskaMuxContext *mkv,
|
|
int error_on_seek_failure, int64_t destpos)
|
|
{
|
|
AVIOContext *dyn_cp = NULL;
|
|
mkv_seekhead *seekhead = &mkv->seekhead;
|
|
int64_t remaining, ret64;
|
|
int i, ret;
|
|
|
|
if ((ret64 = avio_seek(pb, seekhead->filepos, SEEK_SET)) < 0)
|
|
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;
|
|
unsigned idx = cues->num_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;
|
|
|
|
/* Make sure the cues entries are sorted by pts. */
|
|
while (idx > 0 && entries[idx - 1].pts > ts)
|
|
idx--;
|
|
memmove(&entries[idx + 1], &entries[idx],
|
|
(cues->num_entries - idx) * sizeof(entries[0]));
|
|
|
|
entries[idx].pts = ts;
|
|
entries[idx].stream_idx = stream;
|
|
entries[idx].cluster_pos = cluster_pos - mkv->segment_offset;
|
|
entries[idx].relative_pos = relative_pos;
|
|
entries[idx].duration = duration;
|
|
|
|
cues->num_entries++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_assemble_cues(AVStream **streams, AVIOContext *dyn_cp, AVIOContext *cuepoint,
|
|
const mkv_cues *cues, mkv_track *tracks, int num_tracks,
|
|
uint64_t offset)
|
|
{
|
|
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 + offset);
|
|
put_ebml_uint(cuepoint, MATROSKA_ID_CUERELATIVEPOSITION, entry->relative_pos);
|
|
if (entry->duration > 0)
|
|
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 (cuepoint->error < 0)
|
|
return cuepoint->error;
|
|
put_ebml_binary(dyn_cp, MATROSKA_ID_POINTENTRY, buf, size);
|
|
ffio_reset_dyn_buf(cuepoint);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb,
|
|
const AVCodecParameters *par,
|
|
const uint8_t *extradata, int extradata_size)
|
|
{
|
|
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(extradata, 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;
|
|
}
|
|
|
|
#if CONFIG_MATROSKA_MUXER
|
|
static int put_wv_codecpriv(AVIOContext *pb, const uint8_t *extradata, int extradata_size)
|
|
{
|
|
if (extradata && extradata_size == 2)
|
|
avio_write(pb, 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,
|
|
const uint8_t *extradata, int extradata_size)
|
|
{
|
|
int write_comment = (par->ch_layout.order == AV_CHANNEL_ORDER_NATIVE &&
|
|
!(par->ch_layout.u.mask & ~0x3ffffULL) &&
|
|
!ff_flac_is_native_layout(par->ch_layout.u.mask));
|
|
int ret = ff_flac_write_header(pb, extradata, 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->ch_layout.u.mask);
|
|
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;
|
|
}
|
|
#endif
|
|
|
|
static int mkv_assemble_native_codecprivate(AVFormatContext *s, AVIOContext *dyn_cp,
|
|
const AVCodecParameters *par,
|
|
const uint8_t *extradata,
|
|
int extradata_size,
|
|
unsigned *size_to_reserve)
|
|
{
|
|
switch (par->codec_id) {
|
|
case AV_CODEC_ID_VORBIS:
|
|
case AV_CODEC_ID_THEORA:
|
|
return put_xiph_codecpriv(s, dyn_cp, par, extradata, extradata_size);
|
|
case AV_CODEC_ID_AV1:
|
|
if (extradata_size)
|
|
return ff_isom_write_av1c(dyn_cp, extradata,
|
|
extradata_size, 1);
|
|
else
|
|
*size_to_reserve = (AV1_SANE_SEQUENCE_HEADER_MAX_BITS + 7) / 8 + 100;
|
|
break;
|
|
#if CONFIG_MATROSKA_MUXER
|
|
case AV_CODEC_ID_FLAC:
|
|
return put_flac_codecpriv(s, dyn_cp, par, extradata, extradata_size);
|
|
case AV_CODEC_ID_WAVPACK:
|
|
return put_wv_codecpriv(dyn_cp, extradata, extradata_size);
|
|
case AV_CODEC_ID_H264:
|
|
return ff_isom_write_avcc(dyn_cp, extradata,
|
|
extradata_size);
|
|
case AV_CODEC_ID_HEVC:
|
|
return ff_isom_write_hvcc(dyn_cp, extradata,
|
|
extradata_size, 0);
|
|
case AV_CODEC_ID_ALAC:
|
|
if (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, extradata + 12,
|
|
extradata_size - 12);
|
|
break;
|
|
case AV_CODEC_ID_AAC:
|
|
if (extradata_size)
|
|
avio_write(dyn_cp, extradata, extradata_size);
|
|
else
|
|
*size_to_reserve = MAX_PCE_SIZE;
|
|
break;
|
|
case AV_CODEC_ID_ARIB_CAPTION: {
|
|
unsigned stream_identifier, data_component_id;
|
|
switch (par->profile) {
|
|
case AV_PROFILE_ARIB_PROFILE_A:
|
|
stream_identifier = 0x30;
|
|
data_component_id = 0x0008;
|
|
break;
|
|
case AV_PROFILE_ARIB_PROFILE_C:
|
|
stream_identifier = 0x87;
|
|
data_component_id = 0x0012;
|
|
break;
|
|
default:
|
|
av_log(s, AV_LOG_ERROR,
|
|
"Unset/unknown ARIB caption profile %d utilized!\n",
|
|
par->profile);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
avio_w8(dyn_cp, stream_identifier);
|
|
avio_wb16(dyn_cp, data_component_id);
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
if (CONFIG_MATROSKA_MUXER && 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 (extradata_size && par->codec_id != AV_CODEC_ID_TTA)
|
|
avio_write(dyn_cp, extradata, extradata_size);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_assemble_codecprivate(AVFormatContext *s, AVIOContext *dyn_cp,
|
|
AVCodecParameters *par,
|
|
const uint8_t *extradata, int extradata_size,
|
|
int native_id, int qt_id,
|
|
uint8_t **codecpriv, int *codecpriv_size,
|
|
unsigned *max_payload_size)
|
|
{
|
|
MatroskaMuxContext av_unused *const mkv = s->priv_data;
|
|
unsigned size_to_reserve = 0;
|
|
int ret;
|
|
|
|
if (native_id) {
|
|
ret = mkv_assemble_native_codecprivate(s, dyn_cp, par,
|
|
extradata, extradata_size,
|
|
&size_to_reserve);
|
|
if (ret < 0)
|
|
return ret;
|
|
#if CONFIG_MATROSKA_MUXER
|
|
} 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
|
|
&& (!extradata_size || ff_codec_get_id(ff_codec_movvideo_tags, AV_RL32(extradata + 4)) != par->codec_id)
|
|
) {
|
|
avio_wb32(dyn_cp, 0x5a + extradata_size);
|
|
avio_wl32(dyn_cp, par->codec_tag);
|
|
ffio_fill(dyn_cp, 0, 0x5a - 8);
|
|
}
|
|
avio_write(dyn_cp, extradata, 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));
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
/* If vfw extradata updates are supported, this will have
|
|
* to be updated to pass extradata(_size) explicitly. */
|
|
ff_put_bmp_header(dyn_cp, par, 0, 0, mkv->flipped_raw_rgb);
|
|
}
|
|
} 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));
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (!par->codec_tag)
|
|
par->codec_tag = tag;
|
|
|
|
/* Same comment as for ff_put_bmp_header applies here. */
|
|
ret = ff_put_wav_header(s, dyn_cp, par, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX);
|
|
if (ret < 0)
|
|
return ret;
|
|
#endif
|
|
}
|
|
|
|
*codecpriv_size = avio_get_dyn_buf(dyn_cp, codecpriv);
|
|
if (dyn_cp->error < 0)
|
|
return dyn_cp->error;
|
|
*max_payload_size = *codecpriv_size + size_to_reserve;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mkv_put_codecprivate(AVIOContext *pb, unsigned max_payload_size,
|
|
const uint8_t *codecpriv, unsigned codecpriv_size)
|
|
{
|
|
unsigned total_codecpriv_size = 0, total_size;
|
|
|
|
av_assert1(codecpriv_size <= max_payload_size);
|
|
|
|
if (!max_payload_size)
|
|
return;
|
|
|
|
total_size = 2 + ebml_length_size(max_payload_size) + max_payload_size;
|
|
|
|
if (codecpriv_size) {
|
|
unsigned length_size = ebml_length_size(codecpriv_size);
|
|
|
|
total_codecpriv_size = 2U + length_size + codecpriv_size;
|
|
if (total_codecpriv_size + 1 == total_size) {
|
|
/* It is impossible to add one byte of padding via an EBML Void. */
|
|
length_size++;
|
|
total_codecpriv_size++;
|
|
}
|
|
put_ebml_id(pb, MATROSKA_ID_CODECPRIVATE);
|
|
put_ebml_length(pb, codecpriv_size, length_size);
|
|
avio_write(pb, codecpriv, codecpriv_size);
|
|
}
|
|
if (total_codecpriv_size < total_size)
|
|
put_ebml_void(pb, total_size - total_codecpriv_size);
|
|
}
|
|
|
|
static int mkv_update_codecprivate(AVFormatContext *s, MatroskaMuxContext *mkv,
|
|
uint8_t *side_data, int side_data_size,
|
|
AVCodecParameters *par, AVIOContext *pb,
|
|
mkv_track *track, unsigned alternative_size)
|
|
{
|
|
AVIOContext *const dyn_bc = mkv->tmp_bc;
|
|
uint8_t *codecpriv;
|
|
unsigned max_payload_size;
|
|
int ret, codecpriv_size;
|
|
|
|
ret = mkv_assemble_codecprivate(s, dyn_bc, par,
|
|
side_data, side_data_size, 1, 0,
|
|
&codecpriv, &codecpriv_size, &max_payload_size);
|
|
if (ret < 0)
|
|
goto fail;
|
|
if (codecpriv_size > track->codecpriv_size && !alternative_size) {
|
|
ret = AVERROR(ENOSPC);
|
|
goto fail;
|
|
} else if (codecpriv_size > track->codecpriv_size) {
|
|
av_assert1(alternative_size < track->codecpriv_size);
|
|
codecpriv_size = alternative_size;
|
|
}
|
|
avio_seek(pb, track->codecpriv_offset, SEEK_SET);
|
|
mkv_put_codecprivate(pb, track->codecpriv_size,
|
|
codecpriv, codecpriv_size);
|
|
|
|
if (!par->extradata_size) {
|
|
ret = ff_alloc_extradata(par, side_data_size);
|
|
if (ret < 0)
|
|
goto fail;
|
|
memcpy(par->extradata, side_data, side_data_size);
|
|
}
|
|
fail:
|
|
ffio_reset_dyn_buf(dyn_bc);
|
|
return ret;
|
|
}
|
|
|
|
#define MAX_VIDEO_COLOR_ELEMS 20
|
|
static void mkv_write_video_color(EbmlWriter *writer, const AVStream *st,
|
|
const AVCodecParameters *par)
|
|
{
|
|
const AVPacketSideData *side_data;
|
|
|
|
ebml_writer_open_master(writer, MATROSKA_ID_VIDEOCOLOR);
|
|
|
|
if (par->color_trc != AVCOL_TRC_UNSPECIFIED &&
|
|
par->color_trc < AVCOL_TRC_NB) {
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORTRANSFERCHARACTERISTICS,
|
|
par->color_trc);
|
|
}
|
|
if (par->color_space != AVCOL_SPC_UNSPECIFIED &&
|
|
par->color_space < AVCOL_SPC_NB) {
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORMATRIXCOEFF,
|
|
par->color_space);
|
|
}
|
|
if (par->color_primaries != AVCOL_PRI_UNSPECIFIED &&
|
|
par->color_primaries < AVCOL_PRI_NB) {
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORPRIMARIES,
|
|
par->color_primaries);
|
|
}
|
|
if (par->color_range != AVCOL_RANGE_UNSPECIFIED &&
|
|
par->color_range < AVCOL_RANGE_NB) {
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORRANGE, par->color_range);
|
|
}
|
|
if (par->chroma_location != AVCHROMA_LOC_UNSPECIFIED &&
|
|
par->chroma_location <= AVCHROMA_LOC_TOP) {
|
|
int xpos, ypos;
|
|
|
|
av_chroma_location_enum_to_pos(&xpos, &ypos, par->chroma_location);
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ,
|
|
(xpos >> 7) + 1);
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORCHROMASITINGVERT,
|
|
(ypos >> 7) + 1);
|
|
}
|
|
|
|
side_data = av_packet_side_data_get(par->coded_side_data, par->nb_coded_side_data,
|
|
AV_PKT_DATA_CONTENT_LIGHT_LEVEL);
|
|
if (side_data) {
|
|
const AVContentLightMetadata *metadata = (AVContentLightMetadata *)side_data->data;
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORMAXCLL,
|
|
metadata->MaxCLL);
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOCOLORMAXFALL,
|
|
metadata->MaxFALL);
|
|
}
|
|
|
|
side_data = av_packet_side_data_get(par->coded_side_data, par->nb_coded_side_data,
|
|
AV_PKT_DATA_MASTERING_DISPLAY_METADATA);
|
|
if (side_data) {
|
|
const AVMasteringDisplayMetadata *metadata = (AVMasteringDisplayMetadata *)side_data->data;
|
|
ebml_writer_open_master(writer, MATROSKA_ID_VIDEOCOLORMASTERINGMETA);
|
|
if (metadata->has_primaries) {
|
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_RX,
|
|
av_q2d(metadata->display_primaries[0][0]));
|
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_RY,
|
|
av_q2d(metadata->display_primaries[0][1]));
|
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_GX,
|
|
av_q2d(metadata->display_primaries[1][0]));
|
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_GY,
|
|
av_q2d(metadata->display_primaries[1][1]));
|
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_BX,
|
|
av_q2d(metadata->display_primaries[2][0]));
|
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_BY,
|
|
av_q2d(metadata->display_primaries[2][1]));
|
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_WHITEX,
|
|
av_q2d(metadata->white_point[0]));
|
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_WHITEY,
|
|
av_q2d(metadata->white_point[1]));
|
|
}
|
|
if (metadata->has_luminance) {
|
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_LUMINANCEMAX,
|
|
av_q2d(metadata->max_luminance));
|
|
ebml_writer_add_float(writer, MATROSKA_ID_VIDEOCOLOR_LUMINANCEMIN,
|
|
av_q2d(metadata->min_luminance));
|
|
}
|
|
ebml_writer_close_or_discard_master(writer);
|
|
}
|
|
|
|
ebml_writer_close_or_discard_master(writer);
|
|
}
|
|
|
|
#define MAX_VIDEO_PROJECTION_ELEMS 6
|
|
static void mkv_handle_rotation(void *logctx, const AVCodecParameters *par,
|
|
double *yaw, double *roll)
|
|
{
|
|
const int32_t *matrix;
|
|
const AVPacketSideData *side_data =
|
|
av_packet_side_data_get(par->coded_side_data, par->nb_coded_side_data,
|
|
AV_PKT_DATA_DISPLAYMATRIX);
|
|
|
|
if (!side_data)
|
|
return;
|
|
|
|
matrix = (int32_t *)side_data->data;
|
|
|
|
/* Check whether this is an affine transformation */
|
|
if (matrix[2] || matrix[5])
|
|
goto ignore;
|
|
|
|
/* This together with the checks below test whether
|
|
* the upper-left 2x2 matrix is nonsingular. */
|
|
if (!matrix[0] && !matrix[1])
|
|
goto ignore;
|
|
|
|
/* We ignore the translation part of the matrix (matrix[6] and matrix[7])
|
|
* as well as any scaling, i.e. we only look at the upper left 2x2 matrix.
|
|
* We only accept matrices that are an exact multiple of an orthogonal one.
|
|
* Apart from the multiple, every such matrix can be obtained by
|
|
* potentially flipping in the x-direction (corresponding to yaw = 180)
|
|
* followed by a rotation of (say) an angle phi in the counterclockwise
|
|
* direction. The upper-left 2x2 matrix then looks like this:
|
|
* | (+/-)cos(phi) (-/+)sin(phi) |
|
|
* scale * | |
|
|
* | sin(phi) cos(phi) |
|
|
* The first set of signs in the first row apply in case of no flipping,
|
|
* the second set applies in case of flipping. */
|
|
|
|
/* The casts to int64_t are needed because -INT32_MIN doesn't fit
|
|
* in an int32_t. */
|
|
if (matrix[0] == matrix[4] && -(int64_t)matrix[1] == matrix[3]) {
|
|
/* No flipping case */
|
|
*yaw = 0;
|
|
} else if (-(int64_t)matrix[0] == matrix[4] && matrix[1] == matrix[3]) {
|
|
/* Horizontal flip */
|
|
*yaw = 180;
|
|
} else {
|
|
ignore:
|
|
av_log(logctx, AV_LOG_INFO, "Ignoring display matrix indicating "
|
|
"non-orthogonal transformation.\n");
|
|
return;
|
|
}
|
|
*roll = 180 / M_PI * atan2(matrix[3], matrix[4]);
|
|
|
|
/* We do not write a ProjectionType element indicating "rectangular",
|
|
* because this is the default value. */
|
|
}
|
|
|
|
static int mkv_handle_spherical(void *logctx, EbmlWriter *writer,
|
|
const AVCodecParameters *par, uint8_t private[],
|
|
double *yaw, double *pitch, double *roll)
|
|
{
|
|
const AVPacketSideData *sd = av_packet_side_data_get(par->coded_side_data,
|
|
par->nb_coded_side_data,
|
|
AV_PKT_DATA_SPHERICAL);
|
|
const AVSphericalMapping *spherical;
|
|
|
|
if (!sd)
|
|
return 0;
|
|
|
|
spherical = (const AVSphericalMapping *)sd->data;
|
|
if (spherical->projection != AV_SPHERICAL_EQUIRECTANGULAR &&
|
|
spherical->projection != AV_SPHERICAL_EQUIRECTANGULAR_TILE &&
|
|
spherical->projection != AV_SPHERICAL_CUBEMAP) {
|
|
av_log(logctx, AV_LOG_WARNING, "Unknown projection type\n");
|
|
return 0;
|
|
}
|
|
|
|
switch (spherical->projection) {
|
|
case AV_SPHERICAL_EQUIRECTANGULAR:
|
|
case AV_SPHERICAL_EQUIRECTANGULAR_TILE:
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOPROJECTIONTYPE,
|
|
MATROSKA_VIDEO_PROJECTION_TYPE_EQUIRECTANGULAR);
|
|
AV_WB32(private, 0); // version + flags
|
|
if (spherical->projection == AV_SPHERICAL_EQUIRECTANGULAR) {
|
|
AV_WB32(private + 4, 0);
|
|
AV_WB32(private + 8, 0);
|
|
AV_WB32(private + 12, 0);
|
|
AV_WB32(private + 16, 0);
|
|
} else {
|
|
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);
|
|
}
|
|
ebml_writer_add_bin(writer, MATROSKA_ID_VIDEOPROJECTIONPRIVATE,
|
|
private, 20);
|
|
break;
|
|
case AV_SPHERICAL_CUBEMAP:
|
|
ebml_writer_add_uint(writer, 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);
|
|
ebml_writer_add_bin(writer, MATROSKA_ID_VIDEOPROJECTIONPRIVATE,
|
|
private, 12);
|
|
break;
|
|
default:
|
|
av_assert0(0);
|
|
}
|
|
|
|
*yaw = (double) spherical->yaw / (1 << 16);
|
|
*pitch = (double) spherical->pitch / (1 << 16);
|
|
*roll = (double) spherical->roll / (1 << 16);
|
|
|
|
return 1; /* Projection included */
|
|
}
|
|
|
|
static void mkv_write_video_projection(void *logctx, EbmlWriter *wr,
|
|
const AVCodecParameters *par,
|
|
uint8_t private[])
|
|
{
|
|
double yaw = 0, pitch = 0, roll = 0;
|
|
int ret;
|
|
|
|
ebml_writer_open_master(wr, MATROSKA_ID_VIDEOPROJECTION);
|
|
|
|
ret = mkv_handle_spherical(logctx, wr, par, private, &yaw, &pitch, &roll);
|
|
if (!ret)
|
|
mkv_handle_rotation(logctx, par, &yaw, &roll);
|
|
|
|
if (yaw)
|
|
ebml_writer_add_float(wr, MATROSKA_ID_VIDEOPROJECTIONPOSEYAW, yaw);
|
|
if (pitch)
|
|
ebml_writer_add_float(wr, MATROSKA_ID_VIDEOPROJECTIONPOSEPITCH, pitch);
|
|
if (roll)
|
|
ebml_writer_add_float(wr, MATROSKA_ID_VIDEOPROJECTIONPOSEROLL, roll);
|
|
|
|
ebml_writer_close_or_discard_master(wr);
|
|
}
|
|
|
|
#define MAX_FIELD_ORDER_ELEMS 2
|
|
static void mkv_write_field_order(EbmlWriter *writer, int is_webm,
|
|
enum AVFieldOrder field_order)
|
|
{
|
|
switch (field_order) {
|
|
case AV_FIELD_UNKNOWN:
|
|
break;
|
|
case AV_FIELD_PROGRESSIVE:
|
|
ebml_writer_add_uint(writer, 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:
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFLAGINTERLACED,
|
|
MATROSKA_VIDEO_INTERLACE_FLAG_INTERLACED);
|
|
if (!is_webm) {
|
|
switch (field_order) {
|
|
case AV_FIELD_TT:
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFIELDORDER,
|
|
MATROSKA_VIDEO_FIELDORDER_TT);
|
|
break;
|
|
case AV_FIELD_BB:
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFIELDORDER,
|
|
MATROSKA_VIDEO_FIELDORDER_BB);
|
|
break;
|
|
case AV_FIELD_TB:
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFIELDORDER,
|
|
MATROSKA_VIDEO_FIELDORDER_TB);
|
|
break;
|
|
case AV_FIELD_BT:
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOFIELDORDER,
|
|
MATROSKA_VIDEO_FIELDORDER_BT);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#define MAX_STEREO_MODE_ELEMS 1
|
|
static int mkv_write_stereo_mode(AVFormatContext *s, EbmlWriter *writer,
|
|
const AVCodecParameters *par,
|
|
const AVStream *st, int is_webm,
|
|
int *h_width, int *h_height)
|
|
{
|
|
const char *error_message_addendum = "";
|
|
const AVDictionaryEntry *tag;
|
|
MatroskaVideoStereoModeType format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB;
|
|
|
|
/* The following macros create bitfields where the ith bit
|
|
* indicates whether the MatroskaVideoStereoModeType with that value
|
|
* uses double width/height or is WebM compatible. */
|
|
#define FLAG(STEREOMODETYPE, BOOL) | (BOOL) << (STEREOMODETYPE)
|
|
#define WDIV1(STEREOMODETYPE, STEREO3DTYPE, FLAGS, WDIV, HDIV, WEBM) \
|
|
FLAG(STEREOMODETYPE, WDIV)
|
|
#define WDIV2(STEREOMODETYPE, WDIV, HDIV, WEBM) \
|
|
FLAG(STEREOMODETYPE, WDIV)
|
|
// The zero in the following line consumes the first '|'.
|
|
const unsigned width_bitfield = 0 STEREOMODE_STEREO3D_MAPPING(WDIV1, WDIV2);
|
|
|
|
#define HDIV1(STEREOMODETYPE, STEREO3DTYPE, FLAGS, WDIV, HDIV, WEBM) \
|
|
FLAG(STEREOMODETYPE, HDIV)
|
|
#define HDIV2(STEREOMODETYPE, WDIV, HDIV, WEBM) \
|
|
FLAG(STEREOMODETYPE, HDIV)
|
|
const unsigned height_bitfield = 0 STEREOMODE_STEREO3D_MAPPING(HDIV1, HDIV2);
|
|
|
|
#define WEBM1(STEREOMODETYPE, STEREO3DTYPE, FLAGS, WDIV, HDIV, WEBM) \
|
|
FLAG(STEREOMODETYPE, WEBM)
|
|
#define WEBM2(STEREOMODETYPE, WDIV, HDIV, WEBM) \
|
|
FLAG(STEREOMODETYPE, WEBM)
|
|
const unsigned webm_bitfield = 0 STEREOMODE_STEREO3D_MAPPING(WEBM1, WEBM2);
|
|
|
|
*h_width = 1;
|
|
*h_height = 1;
|
|
|
|
if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
|
|
(tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
|
|
|
|
for (int i = 0; i < MATROSKA_VIDEO_STEREOMODE_TYPE_NB; i++)
|
|
if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){
|
|
format = i;
|
|
break;
|
|
}
|
|
if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB) {
|
|
long stereo_mode = strtol(tag->value, NULL, 0);
|
|
if ((unsigned long)stereo_mode >= MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
|
|
goto fail;
|
|
format = stereo_mode;
|
|
}
|
|
} else {
|
|
const AVPacketSideData *sd;
|
|
const AVStereo3D *stereo;
|
|
/* The following macro presumes all MATROSKA_VIDEO_STEREOMODE_TYPE_*
|
|
* values to be in the range 0..254. */
|
|
#define STEREOMODE(STEREOMODETYPE, STEREO3DTYPE, FLAGS, WDIV, HDIV, WEBM) \
|
|
[(STEREO3DTYPE)][!!((FLAGS) & AV_STEREO3D_FLAG_INVERT)] = (STEREOMODETYPE) + 1,
|
|
#define NOTHING(STEREOMODETYPE, WDIV, HDIV, WEBM)
|
|
static const unsigned char conversion_table[][2] = {
|
|
STEREOMODE_STEREO3D_MAPPING(STEREOMODE, NOTHING)
|
|
};
|
|
int fmt;
|
|
|
|
sd = av_packet_side_data_get(par->coded_side_data, par->nb_coded_side_data,
|
|
AV_PKT_DATA_STEREO3D);
|
|
if (!sd)
|
|
return 0;
|
|
|
|
stereo = (const AVStereo3D*)sd->data;
|
|
|
|
/* A garbage AVStereo3D or something with no Matroska analogon. */
|
|
if ((unsigned)stereo->type >= FF_ARRAY_ELEMS(conversion_table))
|
|
return 0;
|
|
|
|
fmt = conversion_table[stereo->type][!!(stereo->flags & AV_STEREO3D_FLAG_INVERT)];
|
|
/* Format with no Matroska analogon; ignore it */
|
|
if (!fmt)
|
|
return 0;
|
|
format = fmt - 1;
|
|
}
|
|
|
|
// if webm, do not write unsupported modes
|
|
if (is_webm && !(webm_bitfield >> format)) {
|
|
error_message_addendum = " for WebM";
|
|
goto fail;
|
|
}
|
|
|
|
*h_width = 1 << ((width_bitfield >> format) & 1);
|
|
*h_height = 1 << ((height_bitfield >> format) & 1);
|
|
|
|
// write StereoMode if format is valid
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_VIDEOSTEREOMODE, format);
|
|
|
|
return 0;
|
|
fail:
|
|
av_log(s, AV_LOG_ERROR,
|
|
"The specified stereo mode is not valid%s.\n",
|
|
error_message_addendum);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
static void mkv_write_blockadditionmapping(AVFormatContext *s, const MatroskaMuxContext *mkv,
|
|
const AVCodecParameters *par, AVIOContext *pb,
|
|
mkv_track *track, const AVStream *st)
|
|
{
|
|
#if CONFIG_MATROSKA_MUXER
|
|
const AVDOVIDecoderConfigurationRecord *dovi;
|
|
const AVPacketSideData *sd;
|
|
|
|
if (IS_SEEKABLE(s->pb, mkv)) {
|
|
track->blockadditionmapping_offset = avio_tell(pb);
|
|
// We can't know at this point if there will be a block with BlockAdditions, so
|
|
// we either write the default value here, or a void element. Either of them will
|
|
// be overwritten when finishing the track.
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKMAXBLKADDID, 0);
|
|
if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
// Similarly, reserve space for an eventual
|
|
// HDR10+ ITU T.35 metadata BlockAdditionMapping.
|
|
put_ebml_void(pb, 3 /* BlockAdditionMapping */
|
|
+ 4 /* BlockAddIDValue */
|
|
+ 4 /* BlockAddIDType */);
|
|
}
|
|
}
|
|
|
|
sd = av_packet_side_data_get(par->coded_side_data, par->nb_coded_side_data,
|
|
AV_PKT_DATA_DOVI_CONF);
|
|
|
|
if (!sd)
|
|
return;
|
|
|
|
dovi = (const AVDOVIDecoderConfigurationRecord *)sd->data;
|
|
if (dovi->dv_profile <= 10) {
|
|
ebml_master mapping;
|
|
uint8_t buf[ISOM_DVCC_DVVC_SIZE];
|
|
uint32_t type;
|
|
|
|
uint64_t expected_size = (2 + 1 + (sizeof(DVCC_DVVC_BLOCK_TYPE_NAME) - 1))
|
|
+ (2 + 1 + 4) + (2 + 1 + ISOM_DVCC_DVVC_SIZE);
|
|
|
|
if (dovi->dv_profile > 7) {
|
|
type = MATROSKA_BLOCK_ADD_ID_TYPE_DVVC;
|
|
} else {
|
|
type = MATROSKA_BLOCK_ADD_ID_TYPE_DVCC;
|
|
}
|
|
|
|
ff_isom_put_dvcc_dvvc(s, buf, dovi);
|
|
|
|
mapping = start_ebml_master(pb, MATROSKA_ID_TRACKBLKADDMAPPING, expected_size);
|
|
|
|
put_ebml_string(pb, MATROSKA_ID_BLKADDIDNAME, DVCC_DVVC_BLOCK_TYPE_NAME);
|
|
put_ebml_uint(pb, MATROSKA_ID_BLKADDIDTYPE, type);
|
|
put_ebml_binary(pb, MATROSKA_ID_BLKADDIDEXTRADATA, buf, sizeof(buf));
|
|
|
|
end_ebml_master(pb, mapping);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static int mkv_write_track_video(AVFormatContext *s, MatroskaMuxContext *mkv,
|
|
const AVStream *st, const AVCodecParameters *par,
|
|
AVIOContext *pb)
|
|
{
|
|
const AVDictionaryEntry *tag;
|
|
int display_width_div = 1, display_height_div = 1;
|
|
uint8_t color_space[4], projection_private[20];
|
|
const AVPacketSideData *sd;
|
|
EBML_WRITER(MAX_FIELD_ORDER_ELEMS + MAX_STEREO_MODE_ELEMS +
|
|
MAX_VIDEO_COLOR_ELEMS + MAX_VIDEO_PROJECTION_ELEMS + 12);
|
|
int cropped_width = par->width, cropped_height = par->height;
|
|
int ret;
|
|
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_TRACKVIDEO);
|
|
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEOPIXELWIDTH , par->width);
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEOPIXELHEIGHT, par->height);
|
|
|
|
mkv_write_field_order(&writer, IS_WEBM(mkv), 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, &writer, par, st, IS_WEBM(mkv),
|
|
&display_width_div,
|
|
&display_height_div);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (par->format == AV_PIX_FMT_YUVA420P ||
|
|
((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) ||
|
|
(tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0))) && strtol(tag->value, NULL, 0))
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEOALPHAMODE, 1);
|
|
|
|
sd = av_packet_side_data_get(par->coded_side_data,
|
|
par->nb_coded_side_data,
|
|
AV_PKT_DATA_FRAME_CROPPING);
|
|
if (sd && sd->size == sizeof(uint32_t) * 4) {
|
|
uint64_t top, bottom, left, right;
|
|
|
|
top = AV_RL32(sd->data + 0);
|
|
bottom = AV_RL32(sd->data + 4);
|
|
left = AV_RL32(sd->data + 8);
|
|
right = AV_RL32(sd->data + 12);
|
|
|
|
if ((left + right) >= par->width ||
|
|
(top + bottom) >= par->height) {
|
|
av_log(s, AV_LOG_ERROR, "Invalid cropping dimensions in stream side data\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (bottom)
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEOPIXELCROPB, bottom);
|
|
if (top)
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEOPIXELCROPT, top);
|
|
if (left)
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEOPIXELCROPL, left);
|
|
if (right)
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEOPIXELCROPR, right);
|
|
|
|
cropped_width -= left + right;
|
|
cropped_height -= top + bottom;
|
|
}
|
|
|
|
// 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(cropped_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 != cropped_width || display_width_div != 1 || display_height_div != 1) {
|
|
if (IS_WEBM(mkv) || display_width_div != 1 || display_height_div != 1) {
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYWIDTH,
|
|
d_width / display_width_div);
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYHEIGHT,
|
|
cropped_height / display_height_div);
|
|
} else {
|
|
AVRational display_aspect_ratio;
|
|
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
|
|
cropped_width * (int64_t)st->sample_aspect_ratio.num,
|
|
cropped_height * (int64_t)st->sample_aspect_ratio.den,
|
|
1024 * 1024);
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYWIDTH,
|
|
display_aspect_ratio.num);
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYHEIGHT,
|
|
display_aspect_ratio.den);
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYUNIT,
|
|
MATROSKA_VIDEO_DISPLAYUNIT_DAR);
|
|
}
|
|
}
|
|
} else if (display_width_div != 1 || display_height_div != 1) {
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYWIDTH,
|
|
cropped_width / display_width_div);
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYHEIGHT,
|
|
cropped_height / display_height_div);
|
|
} else if (!IS_WEBM(mkv))
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_VIDEODISPLAYUNIT,
|
|
MATROSKA_VIDEO_DISPLAYUNIT_UNKNOWN);
|
|
|
|
if (par->codec_id == AV_CODEC_ID_RAWVIDEO) {
|
|
AV_WL32(color_space, par->codec_tag);
|
|
ebml_writer_add_bin(&writer, MATROSKA_ID_VIDEOCOLORSPACE,
|
|
color_space, sizeof(color_space));
|
|
}
|
|
mkv_write_video_color(&writer, st, par);
|
|
mkv_write_video_projection(s, &writer, par, projection_private);
|
|
|
|
return ebml_writer_write(&writer, pb);
|
|
}
|
|
|
|
static void mkv_write_default_duration(mkv_track *track, AVIOContext *pb,
|
|
AVRational duration)
|
|
{
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION,
|
|
1000000000LL * duration.num / duration.den);
|
|
track->default_duration_low = 1000LL * duration.num / duration.den;
|
|
track->default_duration_high = track->default_duration_low +
|
|
!!(1000LL * duration.num % duration.den);
|
|
}
|
|
|
|
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 j, ret;
|
|
const AVDictionaryEntry *tag;
|
|
|
|
if (par->codec_type == AVMEDIA_TYPE_ATTACHMENT)
|
|
return 0;
|
|
|
|
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[0] ? 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 (IS_WEBM(mkv)) {
|
|
const char *codec_id;
|
|
if (par->codec_id != AV_CODEC_ID_WEBVTT) {
|
|
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 (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 {
|
|
if (st->disposition & AV_DISPOSITION_COMMENT)
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGCOMMENTARY, 1);
|
|
if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGHEARINGIMPAIRED, 1);
|
|
if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGVISUALIMPAIRED, 1);
|
|
if (st->disposition & (AV_DISPOSITION_ORIGINAL | AV_DISPOSITION_DUB) &&
|
|
(st->disposition & (AV_DISPOSITION_ORIGINAL | AV_DISPOSITION_DUB))
|
|
!= (AV_DISPOSITION_ORIGINAL | AV_DISPOSITION_DUB))
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGORIGINAL,
|
|
!!(st->disposition & AV_DISPOSITION_ORIGINAL));
|
|
|
|
// 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_FFV1) {
|
|
/* FFV1 is actually supported natively in Matroska,
|
|
* yet we use the VfW way to mux it for compatibility
|
|
* with old demuxers. (FIXME: Are they really important?) */
|
|
} else 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) {
|
|
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) {
|
|
AVRational frame_rate;
|
|
int audio_frame_samples;
|
|
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
mkv->have_video = 1;
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO);
|
|
|
|
frame_rate = (AVRational){ 0, 1 };
|
|
if (st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0)
|
|
frame_rate = st->avg_frame_rate;
|
|
else if (st->r_frame_rate.num > 0 && st->r_frame_rate.den > 0)
|
|
frame_rate = st->r_frame_rate;
|
|
|
|
if (frame_rate.num > 0)
|
|
mkv_write_default_duration(track, pb, av_inv_q(frame_rate));
|
|
|
|
if (CONFIG_MATROSKA_MUXER && !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;
|
|
ffformatcontext(s)->avoid_negative_ts_use_pts = 0;
|
|
}
|
|
|
|
ret = mkv_write_track_video(s, mkv, st, par, pb);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
break;
|
|
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if (par->initial_padding) {
|
|
int64_t codecdelay = av_rescale_q(par->initial_padding,
|
|
(AVRational){ 1, par->sample_rate },
|
|
(AVRational){ 1, 1000000000 });
|
|
if (codecdelay < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Initial padding is invalid\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, codecdelay);
|
|
|
|
track->ts_offset = av_rescale_q(par->initial_padding,
|
|
(AVRational){ 1, par->sample_rate },
|
|
st->time_base);
|
|
ffstream(st)->lowest_ts_allowed = -track->ts_offset;
|
|
}
|
|
if (par->codec_id == AV_CODEC_ID_OPUS)
|
|
put_ebml_uint(pb, MATROSKA_ID_SEEKPREROLL, OPUS_SEEK_PREROLL);
|
|
#if CONFIG_MATROSKA_MUXER
|
|
else 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;
|
|
}
|
|
#endif
|
|
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_AUDIO);
|
|
|
|
audio_frame_samples = av_get_audio_frame_duration2(par, 0);
|
|
if (audio_frame_samples)
|
|
mkv_write_default_duration(track, pb, (AVRational){ audio_frame_samples,
|
|
par->sample_rate });
|
|
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->ch_layout.nb_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 (!IS_WEBM(mkv) && st->disposition & AV_DISPOSITION_DESCRIPTIONS)
|
|
put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGTEXTDESCRIPTIONS, 1);
|
|
|
|
if (!IS_WEBM(mkv) || 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 (!IS_WEBM(mkv))
|
|
mkv_write_blockadditionmapping(s, mkv, par, pb, track, st);
|
|
|
|
if (!IS_WEBM(mkv) || par->codec_id != AV_CODEC_ID_WEBVTT) {
|
|
uint8_t *codecpriv;
|
|
int codecpriv_size, max_payload_size;
|
|
track->codecpriv_offset = avio_tell(pb);
|
|
ret = mkv_assemble_codecprivate(s, mkv->tmp_bc, par,
|
|
par->extradata, par->extradata_size,
|
|
native_id, qt_id,
|
|
&codecpriv, &codecpriv_size, &max_payload_size);
|
|
if (ret < 0)
|
|
goto fail;
|
|
mkv_put_codecprivate(pb, max_payload_size, codecpriv, codecpriv_size);
|
|
track->codecpriv_size = max_payload_size;
|
|
}
|
|
|
|
end_ebml_master(pb, track_master);
|
|
ret = 0;
|
|
fail:
|
|
ffio_reset_dyn_buf(mkv->tmp_bc);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mkv_write_tracks(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int video_default_idx = -1, audio_default_idx = -1, subtitle_default_idx = -1;
|
|
int i, ret;
|
|
|
|
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 = -1, audio_idx = -1, subtitle_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 = 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)
|
|
{
|
|
EBML_WRITER(4);
|
|
uint8_t *key = av_strdup(t->key);
|
|
uint8_t *p = key;
|
|
const uint8_t *lang = NULL;
|
|
int ret;
|
|
|
|
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++;
|
|
}
|
|
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_SIMPLETAG);
|
|
ebml_writer_add_string(&writer, MATROSKA_ID_TAGNAME, key);
|
|
if (lang)
|
|
ebml_writer_add_string(&writer, MATROSKA_ID_TAGLANG, lang);
|
|
ebml_writer_add_string(&writer, MATROSKA_ID_TAGSTRING, t->value);
|
|
ret = ebml_writer_write(&writer, pb);
|
|
|
|
av_freep(&key);
|
|
return ret;
|
|
}
|
|
|
|
static void mkv_write_tag_targets(MatroskaMuxContext *mkv, AVIOContext *pb,
|
|
uint32_t elementid, uint64_t uid)
|
|
{
|
|
ebml_master targets = start_ebml_master(pb, MATROSKA_ID_TAGTARGETS,
|
|
4 + 1 + 8);
|
|
if (elementid)
|
|
put_ebml_uid(pb, elementid, uid);
|
|
end_ebml_master(pb, targets);
|
|
}
|
|
|
|
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, unsigned reserved_size,
|
|
uint32_t elementid, uint64_t uid)
|
|
{
|
|
const AVDictionaryEntry *t = NULL;
|
|
AVIOContext *const tmp_bc = mkv->tmp_bc;
|
|
uint8_t *buf;
|
|
int ret = 0, size, tag_written = 0;
|
|
|
|
mkv_write_tag_targets(mkv, tmp_bc, elementid, uid);
|
|
|
|
while ((t = av_dict_iterate(m, t))) {
|
|
if (mkv_check_tag_name(t->key, elementid)) {
|
|
ret = mkv_write_simpletag(tmp_bc, t);
|
|
if (ret < 0)
|
|
goto end;
|
|
tag_written = 1;
|
|
}
|
|
}
|
|
if (reserved_size)
|
|
put_ebml_void(tmp_bc, reserved_size);
|
|
else if (!tag_written)
|
|
goto end;
|
|
|
|
size = avio_get_dyn_buf(tmp_bc, &buf);
|
|
if (tmp_bc->error) {
|
|
ret = tmp_bc->error;
|
|
goto end;
|
|
}
|
|
if (!*pb) {
|
|
ret = start_ebml_master_crc32(pb, mkv);
|
|
if (ret < 0)
|
|
goto end;
|
|
}
|
|
put_ebml_binary(*pb, MATROSKA_ID_TAG, buf, size);
|
|
|
|
end:
|
|
ffio_reset_dyn_buf(tmp_bc);
|
|
return ret;
|
|
}
|
|
|
|
static int mkv_write_tags(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
int i, ret, seekable = IS_SEEKABLE(s->pb, mkv);
|
|
|
|
mkv->wrote_tags = 1;
|
|
|
|
ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL);
|
|
|
|
ret = mkv_write_tag(mkv, s->metadata, &mkv->tags.bc, 0, 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;
|
|
|
|
ret = mkv_write_tag(mkv, st->metadata, &mkv->tags.bc,
|
|
seekable ? DURATION_SIMPLETAG_SIZE : 0,
|
|
MATROSKA_ID_TAGTARGETS_TRACKUID, track->uid);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (seekable)
|
|
track->duration_offset = avio_tell(mkv->tags.bc) - DURATION_SIMPLETAG_SIZE;
|
|
}
|
|
|
|
if (mkv->nb_attachments && !IS_WEBM(mkv)) {
|
|
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;
|
|
|
|
ret = mkv_write_tag(mkv, st->metadata, &mkv->tags.bc, 0,
|
|
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_new_chapter_ids_needed(const AVFormatContext *s)
|
|
{
|
|
for (unsigned i = 0; i < s->nb_chapters; i++) {
|
|
if (!s->chapters[i]->id)
|
|
return 1;
|
|
for (unsigned j = 0; j < i; j++)
|
|
if (s->chapters[j]->id == s->chapters[i]->id)
|
|
return 1;
|
|
}
|
|
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;
|
|
AVRational scale = {1, 1E9};
|
|
int ret, create_new_ids;
|
|
|
|
if (!s->nb_chapters || mkv->wrote_chapters)
|
|
return 0;
|
|
|
|
ret = start_ebml_master_crc32(&dyn_cp, mkv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
editionentry = start_ebml_master(dyn_cp, MATROSKA_ID_EDITIONENTRY, 0);
|
|
if (!IS_WEBM(mkv)) {
|
|
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;
|
|
|
|
create_new_ids = mkv_new_chapter_ids_needed(s);
|
|
|
|
for (unsigned i = 0; i < s->nb_chapters; i++) {
|
|
AVChapter *const 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;
|
|
uint64_t uid = create_new_ids ? i + 1ULL : c->id;
|
|
EBML_WRITER(7);
|
|
|
|
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;
|
|
}
|
|
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_CHAPTERATOM);
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_CHAPTERUID, uid);
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_CHAPTERTIMESTART, chapterstart);
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_CHAPTERTIMEEND, chapterend);
|
|
if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_CHAPTERDISPLAY);
|
|
ebml_writer_add_string(&writer, MATROSKA_ID_CHAPSTRING, t->value);
|
|
ebml_writer_add_string(&writer, MATROSKA_ID_CHAPLANG , "und");
|
|
}
|
|
ret = ebml_writer_write(&writer, dyn_cp);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
if (tags) {
|
|
ff_metadata_conv(&c->metadata, ff_mkv_metadata_conv, NULL);
|
|
|
|
ret = mkv_write_tag(mkv, c->metadata, tags, 0,
|
|
MATROSKA_ID_TAGTARGETS_CHAPTERUID, uid);
|
|
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_WRITER(6);
|
|
const AVDictionaryEntry *t;
|
|
const char *mimetype;
|
|
|
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT)
|
|
continue;
|
|
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_ATTACHEDFILE);
|
|
|
|
if (t = av_dict_get(st->metadata, "title", NULL, 0))
|
|
ebml_writer_add_string(&writer, 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);
|
|
ffio_free_dyn_buf(&dyn_cp);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
ebml_writer_add_string(&writer, MATROSKA_ID_FILENAME, t->value);
|
|
|
|
mimetype = get_mimetype(st);
|
|
av_assert0(mimetype);
|
|
ebml_writer_add_string(&writer, MATROSKA_ID_FILEMIMETYPE, mimetype);
|
|
ebml_writer_add_bin(&writer, MATROSKA_ID_FILEDATA,
|
|
st->codecpar->extradata, st->codecpar->extradata_size);
|
|
ebml_writer_add_uid(&writer, MATROSKA_ID_FILEUID, track->uid);
|
|
ret = ebml_writer_write(&writer, dyn_cp);
|
|
if (ret < 0) {
|
|
ffio_free_dyn_buf(&dyn_cp);
|
|
return ret;
|
|
}
|
|
}
|
|
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 void ebml_write_header(AVIOContext *pb,
|
|
const char *doctype, int version)
|
|
{
|
|
EBML_WRITER(8);
|
|
ebml_writer_open_master(&writer, EBML_ID_HEADER);
|
|
ebml_writer_add_uint (&writer, EBML_ID_EBMLVERSION, 1);
|
|
ebml_writer_add_uint (&writer, EBML_ID_EBMLREADVERSION, 1);
|
|
ebml_writer_add_uint (&writer, EBML_ID_EBMLMAXIDLENGTH, 4);
|
|
ebml_writer_add_uint (&writer, EBML_ID_EBMLMAXSIZELENGTH, 8);
|
|
ebml_writer_add_string(&writer, EBML_ID_DOCTYPE, doctype);
|
|
ebml_writer_add_uint (&writer, EBML_ID_DOCTYPEVERSION, version);
|
|
ebml_writer_add_uint (&writer, EBML_ID_DOCTYPEREADVERSION, 2);
|
|
/* The size is bounded, so no need to check this. */
|
|
ebml_writer_write(&writer, pb);
|
|
}
|
|
|
|
static int mkv_write_info(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
const AVDictionaryEntry *tag;
|
|
int64_t creation_time;
|
|
AVIOContext *pb;
|
|
int 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 (!IS_WEBM(mkv))
|
|
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
|
|
}
|
|
}
|
|
return end_ebml_master_crc32_tentatively(s->pb, &mkv->info,
|
|
mkv, MATROSKA_ID_INFO);
|
|
}
|
|
|
|
static int mkv_write_header(AVFormatContext *s)
|
|
{
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
int ret, version = 2;
|
|
|
|
ret = avio_open_dyn_buf(&mkv->tmp_bc);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!IS_WEBM(mkv) ||
|
|
av_dict_get(s->metadata, "stereo_mode", NULL, 0) ||
|
|
av_dict_get(s->metadata, "alpha_mode", NULL, 0))
|
|
version = 4;
|
|
|
|
for (unsigned 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_write_header(pb, s->oformat->name, version);
|
|
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 = mkv_write_info(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = mkv_write_tracks(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = mkv_write_chapters(s);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!IS_WEBM(mkv)) {
|
|
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 || mkv->move_cues_to_front) {
|
|
if (IS_SEEKABLE(pb, mkv)) {
|
|
mkv->cues_pos = avio_tell(pb);
|
|
if (mkv->reserve_cues_space >= 1) {
|
|
if (mkv->reserve_cues_space == 1)
|
|
mkv->reserve_cues_space++;
|
|
put_ebml_void(pb, mkv->reserve_cues_space);
|
|
}
|
|
} else
|
|
mkv->reserve_cues_space = -1;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#if CONFIG_MATROSKA_MUXER
|
|
static int mkv_reformat_h2645(MatroskaMuxContext *mkv, AVIOContext *pb,
|
|
const AVPacket *pkt, int *size)
|
|
{
|
|
int ret;
|
|
if (pb) {
|
|
ff_nal_units_write_list(&mkv->cur_block.h2645_nalu_list, pb, pkt->data);
|
|
} else {
|
|
ret = ff_nal_units_create_list(&mkv->cur_block.h2645_nalu_list, pkt->data, pkt->size);
|
|
if (ret < 0)
|
|
return ret;
|
|
*size = ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mkv_reformat_wavpack(MatroskaMuxContext *mkv, AVIOContext *pb,
|
|
const AVPacket *pkt, int *size)
|
|
{
|
|
const uint8_t *src = pkt->data;
|
|
int srclen = pkt->size;
|
|
int offset = 0;
|
|
int ret;
|
|
|
|
while (srclen >= WV_HEADER_SIZE) {
|
|
WvHeader header;
|
|
|
|
ret = ff_wv_parse_header(&header, src);
|
|
if (ret < 0)
|
|
return ret;
|
|
src += WV_HEADER_SIZE;
|
|
srclen -= WV_HEADER_SIZE;
|
|
|
|
if (srclen < header.blocksize)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
offset += 4 * !!header.initial + 8 + 4 * !(header.initial && header.final);
|
|
if (pb) {
|
|
if (header.initial)
|
|
avio_wl32(pb, header.samples);
|
|
avio_wl32(pb, header.flags);
|
|
avio_wl32(pb, header.crc);
|
|
|
|
if (!(header.initial && header.final))
|
|
avio_wl32(pb, header.blocksize);
|
|
|
|
avio_write(pb, src, header.blocksize);
|
|
}
|
|
src += header.blocksize;
|
|
srclen -= header.blocksize;
|
|
offset += header.blocksize;
|
|
}
|
|
*size = offset;
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int mkv_reformat_av1(MatroskaMuxContext *mkv, AVIOContext *pb,
|
|
const AVPacket *pkt, int *size)
|
|
{
|
|
int ret = ff_av1_filter_obus(pb, pkt->data, pkt->size);
|
|
if (ret < 0)
|
|
return ret;
|
|
*size = ret;
|
|
return 0;
|
|
}
|
|
|
|
static int webm_reformat_vtt(MatroskaMuxContext *mkv, AVIOContext *pb,
|
|
const AVPacket *pkt, int *size)
|
|
{
|
|
const uint8_t *id, *settings;
|
|
size_t id_size, settings_size;
|
|
unsigned total = pkt->size + 2U;
|
|
|
|
if (total > INT_MAX)
|
|
return AVERROR(ERANGE);
|
|
|
|
id = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_IDENTIFIER,
|
|
&id_size);
|
|
settings = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_SETTINGS,
|
|
&settings_size);
|
|
if (id_size > INT_MAX - total || settings_size > INT_MAX - (total += id_size))
|
|
return AVERROR(ERANGE);
|
|
*size = total += settings_size;
|
|
if (pb) {
|
|
avio_write(pb, id, id_size);
|
|
avio_w8(pb, '\n');
|
|
avio_write(pb, settings, settings_size);
|
|
avio_w8(pb, '\n');
|
|
avio_write(pb, pkt->data, pkt->size);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void mkv_write_blockadditional(EbmlWriter *writer, const uint8_t *buf,
|
|
size_t size, uint64_t additional_id)
|
|
{
|
|
ebml_writer_open_master(writer, MATROSKA_ID_BLOCKMORE);
|
|
ebml_writer_add_uint(writer, MATROSKA_ID_BLOCKADDID, additional_id);
|
|
ebml_writer_add_bin (writer, MATROSKA_ID_BLOCKADDITIONAL, buf, size);
|
|
ebml_writer_close_master(writer);
|
|
}
|
|
|
|
static int mkv_write_block(void *logctx, MatroskaMuxContext *mkv,
|
|
AVIOContext *pb, const AVCodecParameters *par,
|
|
mkv_track *track, const AVPacket *pkt,
|
|
int keyframe, int64_t ts, uint64_t duration,
|
|
int force_blockgroup, int64_t relative_packet_pos)
|
|
{
|
|
uint8_t t35_buf[6 + AV_HDR_PLUS_MAX_PAYLOAD_SIZE];
|
|
uint8_t *side_data;
|
|
size_t side_data_size;
|
|
uint64_t additional_id;
|
|
unsigned track_number = track->track_num;
|
|
EBML_WRITER(12);
|
|
int ret;
|
|
|
|
mkv->cur_block.track = track;
|
|
mkv->cur_block.pkt = pkt;
|
|
mkv->cur_block.rel_ts = ts - mkv->cluster_pts;
|
|
mkv->cur_block.flags = 0;
|
|
|
|
/* Open a BlockGroup with a Block now; it will later be converted
|
|
* to a SimpleBlock if possible. */
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_BLOCKGROUP);
|
|
ebml_writer_add_block(&writer, mkv);
|
|
|
|
if (duration > 0 && (par->codec_type == AVMEDIA_TYPE_SUBTITLE ||
|
|
/* If the packet's duration is inconsistent with the default duration,
|
|
* add an explicit duration element. */
|
|
track->default_duration_high > 0 &&
|
|
duration != track->default_duration_high &&
|
|
duration != track->default_duration_low))
|
|
ebml_writer_add_uint(&writer, MATROSKA_ID_BLOCKDURATION, duration);
|
|
|
|
av_log(logctx, 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, relative_packet_pos,
|
|
mkv->cluster_pos, track_number, keyframe != 0);
|
|
|
|
side_data = av_packet_get_side_data(pkt,
|
|
AV_PKT_DATA_SKIP_SAMPLES,
|
|
&side_data_size);
|
|
if (side_data && side_data_size >= 10) {
|
|
int64_t discard_padding = AV_RL32(side_data + 4);
|
|
if (discard_padding) {
|
|
discard_padding = av_rescale_q(discard_padding,
|
|
(AVRational){1, par->sample_rate},
|
|
(AVRational){1, 1000000000});
|
|
ebml_writer_add_sint(&writer, MATROSKA_ID_DISCARDPADDING, discard_padding);
|
|
}
|
|
}
|
|
|
|
ebml_writer_open_master(&writer, MATROSKA_ID_BLOCKADDITIONS);
|
|
side_data = av_packet_get_side_data(pkt,
|
|
AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
|
|
&side_data_size);
|
|
if (side_data && side_data_size >= 8 &&
|
|
// Only the Codec-specific BlockMore (id == 1) is currently supported.
|
|
(additional_id = AV_RB64(side_data)) == MATROSKA_BLOCK_ADD_ID_TYPE_OPAQUE) {
|
|
mkv_write_blockadditional(&writer, side_data + 8, side_data_size - 8,
|
|
additional_id);
|
|
track->max_blockaddid = FFMAX(track->max_blockaddid, additional_id);
|
|
}
|
|
|
|
if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
side_data = av_packet_get_side_data(pkt,
|
|
AV_PKT_DATA_DYNAMIC_HDR10_PLUS,
|
|
&side_data_size);
|
|
if (side_data && side_data_size) {
|
|
uint8_t *payload = t35_buf;
|
|
size_t payload_size = sizeof(t35_buf) - 6;
|
|
|
|
bytestream_put_byte(&payload, ITU_T_T35_COUNTRY_CODE_US);
|
|
bytestream_put_be16(&payload, ITU_T_T35_PROVIDER_CODE_SMTPE);
|
|
bytestream_put_be16(&payload, 0x01); // provider_oriented_code
|
|
bytestream_put_byte(&payload, 0x04); // application_identifier
|
|
|
|
ret = av_dynamic_hdr_plus_to_t35((AVDynamicHDRPlus *)side_data, &payload,
|
|
&payload_size);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mkv_write_blockadditional(&writer, t35_buf, payload_size + 6,
|
|
MATROSKA_BLOCK_ADD_ID_ITU_T_T35);
|
|
track->max_blockaddid = FFMAX(track->max_blockaddid,
|
|
MATROSKA_BLOCK_ADD_ID_ITU_T_T35);
|
|
}
|
|
}
|
|
|
|
ebml_writer_close_or_discard_master(&writer);
|
|
|
|
if (!force_blockgroup && writer.nb_elements == 2) {
|
|
/* Nothing except the BlockGroup + Block. Can use a SimpleBlock. */
|
|
writer.elements++; // Skip the BlockGroup.
|
|
writer.nb_elements--;
|
|
av_assert2(writer.elements[0].id == MATROSKA_ID_BLOCK);
|
|
writer.elements[0].id = MATROSKA_ID_SIMPLEBLOCK;
|
|
if (keyframe)
|
|
mkv->cur_block.flags |= 1 << 7;
|
|
} else if (!keyframe)
|
|
ebml_writer_add_sint(&writer, MATROSKA_ID_BLOCKREFERENCE,
|
|
track->last_timestamp - ts);
|
|
|
|
return ebml_writer_write(&writer, pb);
|
|
}
|
|
|
|
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;
|
|
size_t side_data_size;
|
|
int ret;
|
|
|
|
side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
|
|
&side_data_size);
|
|
|
|
switch (par->codec_id) {
|
|
#if CONFIG_MATROSKA_MUXER
|
|
case AV_CODEC_ID_AAC:
|
|
if (side_data_size && mkv->track.bc) {
|
|
int 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 = mkv_update_codecprivate(s, mkv, side_data, side_data_size,
|
|
par, mkv->track.bc, track, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
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) {
|
|
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);
|
|
}
|
|
ret = mkv_update_codecprivate(s, mkv, side_data, side_data_size,
|
|
par, mkv->track.bc, track, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
break;
|
|
#endif
|
|
// FIXME: Remove the following once libaom starts propagating proper extradata during init()
|
|
// See https://bugs.chromium.org/p/aomedia/issues/detail?id=2208
|
|
case AV_CODEC_ID_AV1:
|
|
if (side_data_size && mkv->track.bc && !par->extradata_size) {
|
|
// If the reserved space doesn't suffice, only write
|
|
// the first four bytes of the av1C.
|
|
ret = mkv_update_codecprivate(s, mkv, side_data, side_data_size,
|
|
par, mkv->track.bc, track, 4);
|
|
if (ret < 0)
|
|
return ret;
|
|
} 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 is_sub = par->codec_type == AVMEDIA_TYPE_SUBTITLE;
|
|
/* All subtitle blocks are considered to be keyframes. */
|
|
int keyframe = is_sub || !!(pkt->flags & AV_PKT_FLAG_KEY);
|
|
int64_t duration = FFMAX(pkt->duration, 0);
|
|
int64_t cue_duration = is_sub ? duration : 0;
|
|
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_bc->direct = 1;
|
|
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);
|
|
|
|
/* The WebM spec requires WebVTT to be muxed in BlockGroups;
|
|
* so we force it even for packets without duration. */
|
|
ret = mkv_write_block(s, mkv, pb, par, track, pkt,
|
|
keyframe, ts, duration,
|
|
par->codec_id == AV_CODEC_ID_WEBVTT,
|
|
relative_packet_pos);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (keyframe && IS_SEEKABLE(s->pb, mkv) &&
|
|
(par->codec_type == AVMEDIA_TYPE_VIDEO ||
|
|
par->codec_type == AVMEDIA_TYPE_SUBTITLE ||
|
|
!mkv->have_video && !track->has_cue)) {
|
|
ret = mkv_add_cuepoint(mkv, pkt->stream_index, ts,
|
|
mkv->cluster_pos, relative_packet_pos,
|
|
cue_duration);
|
|
if (ret < 0)
|
|
return ret;
|
|
track->has_cue = 1;
|
|
}
|
|
|
|
track->last_timestamp = ts;
|
|
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 == -1)
|
|
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, offset = 0;
|
|
int length_size = 0;
|
|
|
|
redo_cues:
|
|
ret = start_ebml_master_crc32(&cues, mkv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = mkv_assemble_cues(s->streams, cues, mkv->tmp_bc, &mkv->cues,
|
|
mkv->tracks, s->nb_streams, offset);
|
|
if (ret < 0) {
|
|
ffio_free_dyn_buf(&cues);
|
|
return ret;
|
|
}
|
|
|
|
if (mkv->reserve_cues_space || mkv->move_cues_to_front) {
|
|
size = avio_tell(cues);
|
|
length_size = ebml_length_size(size);
|
|
size += 4 + length_size;
|
|
if (offset + mkv->reserve_cues_space < size) {
|
|
if (mkv->move_cues_to_front) {
|
|
offset = size - mkv->reserve_cues_space;
|
|
ffio_reset_dyn_buf(cues);
|
|
goto redo_cues;
|
|
}
|
|
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 (offset) {
|
|
ret = ff_format_shift_data(s, mkv->cues_pos + mkv->reserve_cues_space,
|
|
offset);
|
|
if (ret < 0) {
|
|
ffio_free_dyn_buf(&cues);
|
|
return ret;
|
|
}
|
|
endpos += offset;
|
|
}
|
|
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 if (!mkv->move_cues_to_front)
|
|
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
|
|
if (!IS_WEBM(mkv)) {
|
|
AVIOContext *track_bc = mkv->track.bc;
|
|
|
|
for (unsigned i = 0; i < s->nb_streams; i++) {
|
|
const mkv_track *track = &mkv->tracks[i];
|
|
|
|
if (!track->max_blockaddid)
|
|
continue;
|
|
|
|
// We reserved a single byte to write this value.
|
|
av_assert0(track->max_blockaddid <= 0xFF);
|
|
|
|
avio_seek(track_bc, track->blockadditionmapping_offset, SEEK_SET);
|
|
|
|
put_ebml_uint(track_bc, MATROSKA_ID_TRACKMAXBLKADDID,
|
|
track->max_blockaddid);
|
|
if (track->max_blockaddid == MATROSKA_BLOCK_ADD_ID_ITU_T_T35) {
|
|
ebml_master mapping_master = start_ebml_master(track_bc, MATROSKA_ID_TRACKBLKADDMAPPING, 8);
|
|
put_ebml_uint(track_bc, MATROSKA_ID_BLKADDIDTYPE,
|
|
MATROSKA_BLOCK_ADD_ID_TYPE_ITU_T_T35);
|
|
put_ebml_uint(track_bc, MATROSKA_ID_BLKADDIDVALUE,
|
|
MATROSKA_BLOCK_ADD_ID_ITU_T_T35);
|
|
end_ebml_master(track_bc, mapping_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) {
|
|
AVIOContext *tags_bc = 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[DURATION_STRING_LENGTH + 1] = "";
|
|
ebml_master simpletag;
|
|
|
|
av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i,
|
|
track->duration);
|
|
|
|
avio_seek(tags_bc, track->duration_offset, SEEK_SET);
|
|
simpletag = start_ebml_master(tags_bc, MATROSKA_ID_SIMPLETAG,
|
|
2 + 1 + 8 + 23);
|
|
put_ebml_string(tags_bc, MATROSKA_ID_TAGNAME, "DURATION");
|
|
|
|
snprintf(duration_string, sizeof(duration_string), "%02d:%02d:%012.9f",
|
|
(int) duration_sec / 3600, ((int) duration_sec / 60) % 60,
|
|
fmod(duration_sec, 60));
|
|
|
|
put_ebml_binary(tags_bc, MATROSKA_ID_TAGSTRING,
|
|
duration_string, DURATION_STRING_LENGTH);
|
|
end_ebml_master(tags_bc, simpletag);
|
|
}
|
|
}
|
|
|
|
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 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)
|
|
{
|
|
FFFormatContext *const si = ffformatcontext(s);
|
|
MatroskaMuxContext *mkv = s->priv_data;
|
|
AVLFG c;
|
|
unsigned nb_tracks = 0;
|
|
int i;
|
|
|
|
mkv->ctx = s;
|
|
|
|
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 ||
|
|
s->streams[i]->codecpar->codec_id == AV_CODEC_ID_RV30) {
|
|
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;
|
|
si->avoid_negative_ts_use_pts = 1;
|
|
}
|
|
|
|
if (!CONFIG_MATROSKA_MUXER ||
|
|
(CONFIG_WEBM_MUXER && !strcmp(s->oformat->name, "webm"))) {
|
|
mkv->mode = MODE_WEBM;
|
|
mkv->write_crc = 0;
|
|
} else
|
|
mkv->mode = MODE_MATROSKAv2;
|
|
|
|
mkv->cur_audio_pkt = ffformatcontext(s)->pkt;
|
|
|
|
mkv->tracks = av_calloc(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];
|
|
const AVCodecParameters *const par = st->codecpar;
|
|
mkv_track *track = &mkv->tracks[i];
|
|
|
|
switch (par->codec_id) {
|
|
#if CONFIG_MATROSKA_MUXER
|
|
case AV_CODEC_ID_WAVPACK:
|
|
track->reformat = mkv_reformat_wavpack;
|
|
break;
|
|
case AV_CODEC_ID_H264:
|
|
case AV_CODEC_ID_HEVC:
|
|
if ((par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 0 ||
|
|
par->codec_id == AV_CODEC_ID_HEVC && par->extradata_size > 6) &&
|
|
(AV_RB24(par->extradata) == 1 || AV_RB32(par->extradata) == 1))
|
|
track->reformat = mkv_reformat_h2645;
|
|
break;
|
|
case AV_CODEC_ID_PRORES:
|
|
/* Matroska specification requires to remove
|
|
* the first QuickTime atom. */
|
|
track->offset = 8;
|
|
break;
|
|
#endif
|
|
case AV_CODEC_ID_AV1:
|
|
track->reformat = mkv_reformat_av1;
|
|
break;
|
|
case AV_CODEC_ID_WEBVTT:
|
|
track->reformat = webm_reformat_vtt;
|
|
break;
|
|
}
|
|
|
|
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 (IS_WEBM(mkv)) {
|
|
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(AVFormatContext *s, AVStream *st,
|
|
const AVPacket *pkt)
|
|
{
|
|
int ret = 1;
|
|
|
|
if (CONFIG_MATROSKA_MUXER && 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);
|
|
} else if (CONFIG_MATROSKA_MUXER &&
|
|
st->codecpar->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE) {
|
|
ret = ff_stream_add_bitstream_filter(st, "pgs_frame_merge", NULL);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const AVCodecTag additional_audio_tags[] = {
|
|
{ AV_CODEC_ID_ALAC, 0XFFFFFFFF },
|
|
{ AV_CODEC_ID_ATRAC1, 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_TRUEHD, 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_ARIB_CAPTION, 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 },
|
|
{ "cues_to_front", "move Cues (the index) to the front by shifting data if necessary", OFFSET(move_cues_to_front), AV_OPT_TYPE_BOOL, { .i64 = 0}, 0, 1, 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 },
|
|
{ "flipped_raw_rgb", "store raw RGB bitmaps in VFW mode in bottom-up mode", OFFSET(flipped_raw_rgb), 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", "control how a track's FlagDefault is inferred", OFFSET(default_mode), AV_OPT_TYPE_INT, { .i64 = DEFAULT_MODE_PASSTHROUGH }, DEFAULT_MODE_INFER, DEFAULT_MODE_PASSTHROUGH, FLAGS, .unit = "default_mode" },
|
|
{ "infer", "for each track type, mark each 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, .unit = "default_mode" },
|
|
{ "infer_no_subs", "for each track type, mark each 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, .unit = "default_mode" },
|
|
{ "passthrough", "use the disposition flag as-is", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_PASSTHROUGH }, 0, 0, FLAGS, .unit = "default_mode" },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass matroska_webm_class = {
|
|
.class_name = "matroska/webm muxer",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
#if CONFIG_MATROSKA_MUXER
|
|
static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
|
|
{
|
|
for (int 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;
|
|
}
|
|
|
|
const FFOutputFormat ff_matroska_muxer = {
|
|
.p.name = "matroska",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("Matroska"),
|
|
.p.mime_type = "video/x-matroska",
|
|
.p.extensions = "mkv",
|
|
.priv_data_size = sizeof(MatroskaMuxContext),
|
|
.p.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
|
|
AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
|
|
.p.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,
|
|
.p.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
|
|
#if FF_API_ALLOW_FLUSH
|
|
AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
|
|
#else
|
|
AVFMT_TS_NONSTRICT,
|
|
#endif
|
|
.p.codec_tag = (const AVCodecTag* const []){
|
|
ff_codec_bmp_tags, ff_codec_wav_tags,
|
|
additional_audio_tags, additional_subtitle_tags, 0
|
|
},
|
|
.p.subtitle_codec = AV_CODEC_ID_ASS,
|
|
.query_codec = mkv_query_codec,
|
|
.check_bitstream = mkv_check_bitstream,
|
|
.p.priv_class = &matroska_webm_class,
|
|
.flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_WEBM_MUXER
|
|
static int webm_query_codec(enum AVCodecID codec_id, int std_compliance)
|
|
{
|
|
for (int 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;
|
|
}
|
|
|
|
const FFOutputFormat ff_webm_muxer = {
|
|
.p.name = "webm",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("WebM"),
|
|
.p.mime_type = "video/webm",
|
|
.p.extensions = "webm",
|
|
.priv_data_size = sizeof(MatroskaMuxContext),
|
|
.p.audio_codec = CONFIG_LIBOPUS_ENCODER ? AV_CODEC_ID_OPUS : AV_CODEC_ID_VORBIS,
|
|
.p.video_codec = CONFIG_LIBVPX_VP9_ENCODER? AV_CODEC_ID_VP9 : AV_CODEC_ID_VP8,
|
|
.p.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,
|
|
.p.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
|
|
#if FF_API_ALLOW_FLUSH
|
|
AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
|
|
#else
|
|
AVFMT_TS_NONSTRICT,
|
|
#endif
|
|
.p.priv_class = &matroska_webm_class,
|
|
.flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_MATROSKA_AUDIO_MUXER
|
|
const FFOutputFormat ff_matroska_audio_muxer = {
|
|
.p.name = "matroska",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("Matroska Audio"),
|
|
.p.mime_type = "audio/x-matroska",
|
|
.p.extensions = "mka",
|
|
.priv_data_size = sizeof(MatroskaMuxContext),
|
|
.p.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
|
|
AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
|
|
.p.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,
|
|
#if FF_API_ALLOW_FLUSH
|
|
.p.flags = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT |
|
|
AVFMT_ALLOW_FLUSH,
|
|
#else
|
|
.p.flags = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT,
|
|
#endif
|
|
.p.codec_tag = (const AVCodecTag* const []){
|
|
ff_codec_wav_tags, additional_audio_tags, 0
|
|
},
|
|
.p.priv_class = &matroska_webm_class,
|
|
.flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
|
|
};
|
|
#endif
|