/*
- * Matroska file muxer
+ * Matroska muxer
* Copyright (c) 2007 David Conrad
*
* This file is part of FFmpeg.
*/
#include "avformat.h"
-#include "md5.h"
#include "riff.h"
-#include "xiph.h"
+#include "isom.h"
#include "matroska.h"
+#include "avc.h"
+#include "flacenc.h"
+#include "avlanguage.h"
+#include "libavcore/samplefmt.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/random_seed.h"
+#include "libavutil/lfg.h"
+#include "libavcodec/xiph.h"
+#include "libavcodec/mpeg4audio.h"
+#include <strings.h>
typedef struct ebml_master {
- offset_t pos; ///< absolute offset in the file where the master's elements start
+ int64_t pos; ///< absolute offset in the file where the master's elements start
int sizebytes; ///< how many bytes were reserved for the size
} ebml_master;
} mkv_seekhead_entry;
typedef struct mkv_seekhead {
- offset_t filepos;
- offset_t segment_offset; ///< the file offset to the beginning of the segment
+ int64_t filepos;
+ int64_t segment_offset; ///< the file offset to the beginning of the segment
int reserved_size; ///< -1 if appending to file
int max_entries;
mkv_seekhead_entry *entries;
typedef struct {
uint64_t pts;
int tracknum;
- offset_t cluster_pos; ///< file offset of the cluster containing the block
+ int64_t cluster_pos; ///< file offset of the cluster containing the block
} mkv_cuepoint;
typedef struct {
- offset_t segment_offset;
+ int64_t segment_offset;
mkv_cuepoint *entries;
int num_entries;
} mkv_cues;
+typedef struct {
+ int write_dts;
+} mkv_track;
+
+#define MODE_MATROSKAv2 0x01
+#define MODE_WEBM 0x02
+
typedef struct MatroskaMuxContext {
+ int mode;
+ ByteIOContext *dyn_bc;
ebml_master segment;
- offset_t segment_offset;
- offset_t segment_uid;
+ int64_t segment_offset;
ebml_master cluster;
- offset_t cluster_pos; ///< file offset of the current cluster
- uint64_t cluster_pts;
- offset_t duration_offset;
- uint64_t duration;
+ int64_t cluster_pos; ///< file offset of the current cluster
+ int64_t cluster_pts;
+ int64_t duration_offset;
+ int64_t duration;
mkv_seekhead *main_seekhead;
- mkv_seekhead *cluster_seekhead;
mkv_cues *cues;
+ mkv_track *tracks;
- struct AVMD5 *md5_ctx;
+ unsigned int audio_buffer_size;
+ AVPacket cur_audio_pkt;
} MatroskaMuxContext;
-// 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit offset, 4 bytes for target EBML ID
+/** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit
+ * offset, 4 bytes for target EBML ID */
#define MAX_SEEKENTRY_SIZE 21
-// per-cuepoint-track - 3 1-byte EBML IDs, 3 1-byte EBML sizes, 2 8-byte uint max
+/** per-cuepoint-track - 3 1-byte EBML IDs, 3 1-byte EBML sizes, 2
+ * 8-byte uint max */
#define MAX_CUETRACKPOS_SIZE 22
-// per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max
+/** per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max */
#define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE*num_tracks
}
/**
- * Write an EBML size meaning "unknown size"
+ * Write an EBML size meaning "unknown size".
*
- * @param bytes The number of bytes the size should occupy. Maximum of 8.
+ * @param bytes The number of bytes the size should occupy (maximum: 8).
*/
static void put_ebml_size_unknown(ByteIOContext *pb, int bytes)
{
- uint64_t value = 0;
- int i;
-
- bytes = FFMIN(bytes, 8);
- for (i = 0; i < bytes*7 + 1; i++)
- value |= 1ULL << i;
- for (i = bytes-1; i >= 0; i--)
- put_byte(pb, value >> i*8);
+ assert(bytes <= 8);
+ put_byte(pb, 0x1ff >> bytes);
+ while (--bytes)
+ put_byte(pb, 0xff);
}
/**
- * Calculate how many bytes are needed to represent a given size in EBML
+ * Calculate how many bytes are needed to represent a given number in EBML.
*/
-static int ebml_size_bytes(uint64_t size)
+static int ebml_num_size(uint64_t num)
{
int bytes = 1;
- while ((size+1) >> bytes*7) bytes++;
+ while ((num+1) >> bytes*7) bytes++;
return bytes;
}
/**
- * Write a size in EBML variable length format.
+ * Write a number in EBML variable length format.
*
- * @param bytes The number of bytes that need to be used to write the size.
+ * @param bytes The number of bytes that need to be used to write the number.
* If zero, any number of bytes can be used.
*/
-static void put_ebml_size(ByteIOContext *pb, uint64_t size, int bytes)
+static void put_ebml_num(ByteIOContext *pb, uint64_t num, int bytes)
{
- int i, needed_bytes = ebml_size_bytes(size);
+ int i, needed_bytes = ebml_num_size(num);
// sizes larger than this are currently undefined in EBML
- // so write "unknown" size
- if (size >= (1ULL<<56)-1) {
- put_ebml_size_unknown(pb, 1);
- return;
- }
+ assert(num < (1ULL<<56)-1);
if (bytes == 0)
// don't care how many bytes are used, so use the min
bytes = needed_bytes;
- else if (needed_bytes > bytes) {
- // the bytes needed to write the given size would exceed the bytes
- // that we need to use, so write unknown size. This shouldn't happen.
- av_log(NULL, AV_LOG_WARNING, "Size of %" PRIu64 " needs %d bytes but only %d bytes reserved\n",
- size, needed_bytes, bytes);
- put_ebml_size_unknown(pb, bytes);
- return;
- }
+ // the bytes needed to write the given size would exceed the bytes
+ // that we need to use, so write unknown size. This shouldn't happen.
+ assert(bytes >= needed_bytes);
- size |= 1ULL << bytes*7;
+ num |= 1ULL << bytes*7;
for (i = bytes - 1; i >= 0; i--)
- put_byte(pb, size >> i*8);
+ put_byte(pb, num >> i*8);
}
static void put_ebml_uint(ByteIOContext *pb, unsigned int elementid, uint64_t val)
{
int i, bytes = 1;
- while (val >> bytes*8) bytes++;
+ uint64_t tmp = val;
+ while (tmp>>=8) bytes++;
put_ebml_id(pb, elementid);
- put_ebml_size(pb, bytes, 0);
+ put_ebml_num(pb, bytes, 0);
for (i = bytes - 1; i >= 0; i--)
put_byte(pb, val >> i*8);
}
static void put_ebml_float(ByteIOContext *pb, unsigned int elementid, double val)
{
put_ebml_id(pb, elementid);
- put_ebml_size(pb, 8, 0);
+ put_ebml_num(pb, 8, 0);
put_be64(pb, av_dbl2int(val));
}
static void put_ebml_binary(ByteIOContext *pb, unsigned int elementid,
- const uint8_t *buf, int size)
+ const void *buf, int size)
{
put_ebml_id(pb, elementid);
- put_ebml_size(pb, size, 0);
+ put_ebml_num(pb, size, 0);
put_buffer(pb, buf, size);
}
}
/**
- * Writes a void element of a given size. Useful for reserving space in the file to be
- * written to later.
+ * Write a void element of a given size. Useful for reserving space in
+ * the file to be written to later.
*
* @param size The number of bytes to reserve, which must be at least 2.
*/
static void put_ebml_void(ByteIOContext *pb, uint64_t size)
{
- offset_t currentpos = url_ftell(pb);
+ int64_t currentpos = url_ftell(pb);
- if (size < 2)
- return;
+ assert(size >= 2);
put_ebml_id(pb, EBML_ID_VOID);
- // we need to subtract the length needed to store the size from the size we need to reserve
- // so 2 cases, we use 8 bytes to store the size if possible, 1 byte otherwise
+ // we need to subtract the length needed to store the size from the
+ // size we need to reserve so 2 cases, we use 8 bytes to store the
+ // size if possible, 1 byte otherwise
if (size < 10)
- put_ebml_size(pb, size-1, 0);
+ put_ebml_num(pb, size-1, 0);
else
- put_ebml_size(pb, size-9, 8);
- url_fseek(pb, currentpos + size, SEEK_SET);
+ put_ebml_num(pb, size-9, 8);
+ while(url_ftell(pb) < currentpos + size)
+ put_byte(pb, 0);
}
static ebml_master start_ebml_master(ByteIOContext *pb, unsigned int elementid, uint64_t expectedsize)
{
- int bytes = expectedsize ? ebml_size_bytes(expectedsize) : 8;
+ int bytes = expectedsize ? ebml_num_size(expectedsize) : 8;
put_ebml_id(pb, elementid);
put_ebml_size_unknown(pb, bytes);
return (ebml_master){ url_ftell(pb), bytes };
static void end_ebml_master(ByteIOContext *pb, ebml_master master)
{
- offset_t pos = url_ftell(pb);
+ int64_t pos = url_ftell(pb);
- url_fseek(pb, master.pos - master.sizebytes, SEEK_SET);
- put_ebml_size(pb, pos - master.pos, master.sizebytes);
+ if (url_fseek(pb, master.pos - master.sizebytes, SEEK_SET) < 0)
+ return;
+ put_ebml_num(pb, pos - master.pos, master.sizebytes);
url_fseek(pb, pos, SEEK_SET);
}
}
/**
- * Initialize a mkv_seekhead element to be ready to index level 1 Matroska elements.
- * If a maximum number of elements is specified, enough space will be reserved at
- * the current file location to write a seek head of that size.
+ * Initialize a mkv_seekhead element to be ready to index level 1 Matroska
+ * elements. If a maximum number of elements is specified, enough space
+ * will be reserved at the current file location to write a seek head of
+ * that size.
*
- * @param segment_offset The absolute offset to the position in the file where the segment begins
- * @param numelements the maximum number of elements that will be indexed by this
- * seek head, 0 if unlimited.
+ * @param segment_offset The absolute offset to the position in the file
+ * where the segment begins.
+ * @param numelements The maximum number of elements that will be indexed
+ * by this seek head, 0 if unlimited.
*/
-static mkv_seekhead * mkv_start_seekhead(ByteIOContext *pb, offset_t segment_offset, int numelements)
+static mkv_seekhead * mkv_start_seekhead(ByteIOContext *pb, int64_t segment_offset, int numelements)
{
mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead));
if (new_seekhead == NULL)
if (numelements > 0) {
new_seekhead->filepos = url_ftell(pb);
- // 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID and size,
- // and 3 bytes to guarantee that an EBML void element will fit afterwards
+ // 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID
+ // and size, and 3 bytes to guarantee that an EBML void element
+ // will fit afterwards
new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 13;
new_seekhead->max_entries = numelements;
put_ebml_void(pb, new_seekhead->reserved_size);
static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
{
mkv_seekhead_entry *entries = seekhead->entries;
- int new_entry = seekhead->num_entries;
// don't store more elements than we reserved space for
if (seekhead->max_entries > 0 && seekhead->max_entries <= seekhead->num_entries)
entries = av_realloc(entries, (seekhead->num_entries + 1) * sizeof(mkv_seekhead_entry));
if (entries == NULL)
- return -1;
+ return AVERROR(ENOMEM);
- entries[new_entry].elementid = elementid;
- entries[new_entry].segmentpos = filepos - seekhead->segment_offset;
+ entries[seekhead->num_entries ].elementid = elementid;
+ entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset;
seekhead->entries = entries;
- seekhead->num_entries++;
-
return 0;
}
/**
- * Write the seek head to the file and free it. If a maximum number of elements was
- * specified to mkv_start_seekhead(), the seek head will be written at the location
- * reserved for it. Otherwise, it is written at the current location in the file.
+ * Write the seek head to the file and free it. If a maximum number of
+ * elements was specified to mkv_start_seekhead(), the seek head will
+ * be written at the location reserved for it. Otherwise, it is written
+ * at the current location in the file.
*
- * @return the file offset where the seekhead was written
+ * @return The file offset where the seekhead was written,
+ * -1 if an error occurred.
*/
-static offset_t mkv_write_seekhead(ByteIOContext *pb, mkv_seekhead *seekhead)
+static int64_t mkv_write_seekhead(ByteIOContext *pb, mkv_seekhead *seekhead)
{
ebml_master metaseek, seekentry;
- offset_t currentpos;
+ int64_t currentpos;
int i;
currentpos = url_ftell(pb);
if (seekhead->reserved_size > 0)
- url_fseek(pb, seekhead->filepos, SEEK_SET);
+ if (url_fseek(pb, seekhead->filepos, SEEK_SET) < 0)
+ return -1;
metaseek = start_ebml_master(pb, MATROSKA_ID_SEEKHEAD, seekhead->reserved_size);
for (i = 0; i < seekhead->num_entries; i++) {
seekentry = start_ebml_master(pb, MATROSKA_ID_SEEKENTRY, MAX_SEEKENTRY_SIZE);
put_ebml_id(pb, MATROSKA_ID_SEEKID);
- put_ebml_size(pb, ebml_id_size(entry->elementid), 0);
+ put_ebml_num(pb, ebml_id_size(entry->elementid), 0);
put_ebml_id(pb, entry->elementid);
put_ebml_uint(pb, MATROSKA_ID_SEEKPOSITION, entry->segmentpos);
return currentpos;
}
-static mkv_cues * mkv_start_cues(offset_t segment_offset)
+static mkv_cues * mkv_start_cues(int64_t segment_offset)
{
mkv_cues *cues = av_mallocz(sizeof(mkv_cues));
if (cues == NULL)
return cues;
}
-static int mkv_add_cuepoint(mkv_cues *cues, AVPacket *pkt, offset_t cluster_pos)
+static int mkv_add_cuepoint(mkv_cues *cues, int stream, int64_t ts, int64_t cluster_pos)
{
mkv_cuepoint *entries = cues->entries;
- int new_entry = cues->num_entries;
entries = av_realloc(entries, (cues->num_entries + 1) * sizeof(mkv_cuepoint));
if (entries == NULL)
- return -1;
+ return AVERROR(ENOMEM);
+
+ if (ts < 0)
+ return 0;
- entries[new_entry].pts = pkt->pts;
- entries[new_entry].tracknum = pkt->stream_index + 1;
- entries[new_entry].cluster_pos = cluster_pos - cues->segment_offset;
+ entries[cues->num_entries ].pts = ts;
+ entries[cues->num_entries ].tracknum = stream + 1;
+ entries[cues->num_entries++].cluster_pos = cluster_pos - cues->segment_offset;
cues->entries = entries;
- cues->num_entries++;
return 0;
}
-static offset_t mkv_write_cues(ByteIOContext *pb, mkv_cues *cues, int num_tracks)
+static int64_t mkv_write_cues(ByteIOContext *pb, mkv_cues *cues, int num_tracks)
{
ebml_master cues_element;
- offset_t currentpos;
+ int64_t currentpos;
int i, j;
currentpos = url_ftell(pb);
return currentpos;
}
-static int put_xiph_codecpriv(ByteIOContext *pb, AVCodecContext *codec)
+static int put_xiph_codecpriv(AVFormatContext *s, ByteIOContext *pb, AVCodecContext *codec)
{
- ebml_master codecprivate;
uint8_t *header_start[3];
int header_len[3];
int first_header_size;
if (ff_split_xiph_headers(codec->extradata, codec->extradata_size,
first_header_size, header_start, header_len) < 0) {
- av_log(codec, AV_LOG_ERROR, "Extradata corrupt.\n");
+ av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
return -1;
}
- codecprivate = start_ebml_master(pb, MATROSKA_ID_CODECPRIVATE, 0);
put_byte(pb, 2); // number packets - 1
for (j = 0; j < 2; j++) {
put_xiph_size(pb, header_len[j]);
}
for (j = 0; j < 3; j++)
put_buffer(pb, header_start[j], header_len[j]);
- end_ebml_master(pb, codecprivate);
-
- return 0;
-}
-
-#define FLAC_STREAMINFO_SIZE 34
-
-static int put_flac_codecpriv(ByteIOContext *pb, AVCodecContext *codec)
-{
- ebml_master codecpriv = start_ebml_master(pb, MATROSKA_ID_CODECPRIVATE, 0);
- // if the extradata_size is greater than FLAC_STREAMINFO_SIZE,
- // assume that it's in Matroska's format already
- if (codec->extradata_size < FLAC_STREAMINFO_SIZE) {
- av_log(codec, AV_LOG_ERROR, "Invalid FLAC extradata\n");
- return -1;
- } else if (codec->extradata_size == FLAC_STREAMINFO_SIZE) {
- // only the streaminfo packet
- put_byte(pb, 0);
- put_xiph_size(pb, codec->extradata_size);
- av_log(codec, AV_LOG_ERROR, "Only one packet\n");
- }
- put_buffer(pb, codec->extradata, codec->extradata_size);
- end_ebml_master(pb, codecpriv);
return 0;
}
-static void get_aac_sample_rates(AVCodecContext *codec, int *sample_rate, int *output_sample_rate)
+static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, int *sample_rate, int *output_sample_rate)
{
- static const int aac_sample_rates[] = {
- 96000, 88200, 64000, 48000, 44100, 32000,
- 24000, 22050, 16000, 12000, 11025, 8000,
- };
int sri;
if (codec->extradata_size < 2) {
- av_log(codec, AV_LOG_WARNING, "no aac extradata, unable to determine sample rate\n");
+ av_log(s, AV_LOG_WARNING, "No AAC extradata, unable to determine samplerate.\n");
return;
}
sri = ((codec->extradata[0] << 1) & 0xE) | (codec->extradata[1] >> 7);
if (sri > 12) {
- av_log(codec, AV_LOG_WARNING, "aac samplerate index out of bounds\n");
+ av_log(s, AV_LOG_WARNING, "AAC samplerate index out of bounds\n");
return;
}
- *sample_rate = aac_sample_rates[sri];
+ *sample_rate = ff_mpeg4audio_sample_rates[sri];
// if sbr, get output sample rate as well
if (codec->extradata_size == 5) {
sri = (codec->extradata[4] >> 3) & 0xF;
if (sri > 12) {
- av_log(codec, AV_LOG_WARNING, "aac output samplerate index out of bounds\n");
+ av_log(s, AV_LOG_WARNING, "AAC output samplerate index out of bounds\n");
return;
}
- *output_sample_rate = aac_sample_rates[sri];
+ *output_sample_rate = ff_mpeg4audio_sample_rates[sri];
+ }
+}
+
+static int mkv_write_codecprivate(AVFormatContext *s, ByteIOContext *pb, AVCodecContext *codec, int native_id, int qt_id)
+{
+ ByteIOContext *dyn_cp;
+ uint8_t *codecpriv;
+ int ret, codecpriv_size;
+
+ ret = url_open_dyn_buf(&dyn_cp);
+ if(ret < 0)
+ return ret;
+
+ if (native_id) {
+ if (codec->codec_id == CODEC_ID_VORBIS || codec->codec_id == CODEC_ID_THEORA)
+ ret = put_xiph_codecpriv(s, dyn_cp, codec);
+ else if (codec->codec_id == CODEC_ID_FLAC)
+ ret = ff_flac_write_header(dyn_cp, codec, 1);
+ else if (codec->codec_id == CODEC_ID_H264)
+ ret = ff_isom_write_avcc(dyn_cp, codec->extradata, codec->extradata_size);
+ else if (codec->extradata_size)
+ put_buffer(dyn_cp, codec->extradata, codec->extradata_size);
+ } else if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
+ if (qt_id) {
+ if (!codec->codec_tag)
+ codec->codec_tag = ff_codec_get_tag(codec_movvideo_tags, codec->codec_id);
+ if (codec->extradata_size)
+ put_buffer(dyn_cp, codec->extradata, codec->extradata_size);
+ } else {
+ if (!codec->codec_tag)
+ codec->codec_tag = ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id);
+ if (!codec->codec_tag) {
+ av_log(s, AV_LOG_ERROR, "No bmp codec ID found.\n");
+ ret = -1;
+ }
+
+ ff_put_bmp_header(dyn_cp, codec, ff_codec_bmp_tags, 0);
+ }
+
+ } else if (codec->codec_type == AVMEDIA_TYPE_AUDIO) {
+ unsigned int tag;
+ tag = ff_codec_get_tag(ff_codec_wav_tags, codec->codec_id);
+ if (!tag) {
+ av_log(s, AV_LOG_ERROR, "No wav codec ID found.\n");
+ ret = -1;
+ }
+ if (!codec->codec_tag)
+ codec->codec_tag = tag;
+
+ ff_put_wav_header(dyn_cp, codec);
}
+
+ codecpriv_size = url_close_dyn_buf(dyn_cp, &codecpriv);
+ if (codecpriv_size)
+ put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codecpriv, codecpriv_size);
+ av_free(codecpriv);
+ return ret;
}
static int mkv_write_tracks(AVFormatContext *s)
{
MatroskaMuxContext *mkv = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
ebml_master tracks;
- int i, j;
+ int i, j, ret;
- if (mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TRACKS, url_ftell(pb)) < 0)
- return -1;
+ ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TRACKS, url_ftell(pb));
+ if (ret < 0) return ret;
tracks = start_ebml_master(pb, MATROSKA_ID_TRACKS, 0);
for (i = 0; i < s->nb_streams; i++) {
AVCodecContext *codec = st->codec;
ebml_master subinfo, track;
int native_id = 0;
+ int qt_id = 0;
int bit_depth = av_get_bits_per_sample(codec->codec_id);
int sample_rate = codec->sample_rate;
int output_sample_rate = 0;
+ AVMetadataTag *tag;
+
+ if (!bit_depth)
+ bit_depth = av_get_bits_per_sample_fmt(codec->sample_fmt);
if (codec->codec_id == CODEC_ID_AAC)
- get_aac_sample_rates(codec, &sample_rate, &output_sample_rate);
+ get_aac_sample_rates(s, codec, &sample_rate, &output_sample_rate);
track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0);
put_ebml_uint (pb, MATROSKA_ID_TRACKNUMBER , i + 1);
put_ebml_uint (pb, MATROSKA_ID_TRACKUID , i + 1);
put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet)
- if (st->language[0])
- put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, st->language);
- else
- put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, "und");
+ if ((tag = av_metadata_get(st->metadata, "title", NULL, 0)))
+ put_ebml_string(pb, MATROSKA_ID_TRACKNAME, tag->value);
+ tag = av_metadata_get(st->metadata, "language", NULL, 0);
+ put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag ? tag->value:"und");
+
+ if (st->disposition)
+ put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGDEFAULT, !!(st->disposition & AV_DISPOSITION_DEFAULT));
- // look for a codec id string specific to mkv to use, if none are found, use AVI codes
+ // look for a codec ID string specific to mkv to use,
+ // if none are found, use AVI codes
for (j = 0; ff_mkv_codec_tags[j].id != CODEC_ID_NONE; j++) {
if (ff_mkv_codec_tags[j].id == codec->codec_id) {
put_ebml_string(pb, MATROSKA_ID_CODECID, ff_mkv_codec_tags[j].str);
}
}
- if (native_id) {
- if (codec->codec_id == CODEC_ID_VORBIS || codec->codec_id == CODEC_ID_THEORA) {
- if (put_xiph_codecpriv(pb, codec) < 0)
- return -1;
- } else if (codec->codec_id == CODEC_ID_FLAC) {
- if (put_flac_codecpriv(pb, codec) < 0)
- return -1;
- } else if (codec->extradata_size) {
- put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codec->extradata, codec->extradata_size);
- }
+ if (mkv->mode == MODE_WEBM && !(codec->codec_id == CODEC_ID_VP8 ||
+ codec->codec_id == CODEC_ID_VORBIS)) {
+ av_log(s, AV_LOG_ERROR,
+ "Only VP8 video and Vorbis audio are supported for WebM.\n");
+ return AVERROR(EINVAL);
}
switch (codec->codec_type) {
- case CODEC_TYPE_VIDEO:
+ case AVMEDIA_TYPE_VIDEO:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO);
-
- if (!native_id) {
- ebml_master bmp_header;
- // if there is no mkv-specific codec id, use VFW mode
- if (!codec->codec_tag)
- codec->codec_tag = codec_get_tag(codec_bmp_tags, codec->codec_id);
-
- put_ebml_string(pb, MATROSKA_ID_CODECID, MATROSKA_CODEC_ID_VIDEO_VFW_FOURCC);
- bmp_header = start_ebml_master(pb, MATROSKA_ID_CODECPRIVATE, 0);
- put_bmp_header(pb, codec, codec_bmp_tags, 0);
- end_ebml_master(pb, bmp_header);
+ put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, av_q2d(codec->time_base)*1E9);
+
+ if (!native_id &&
+ ff_codec_get_tag(codec_movvideo_tags, codec->codec_id) &&
+ (!ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id)
+ || codec->codec_id == CODEC_ID_SVQ1
+ || codec->codec_id == CODEC_ID_SVQ3
+ || codec->codec_id == CODEC_ID_CINEPAK))
+ qt_id = 1;
+
+ if (qt_id)
+ put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
+ else if (!native_id) {
+ // if there is no mkv-specific codec ID, use VFW mode
+ put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
+ mkv->tracks[i].write_dts = 1;
}
+
subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
// XXX: interlace flag?
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width);
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height);
- if (codec->sample_aspect_ratio.num) {
- put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , codec->sample_aspect_ratio.num);
- put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->sample_aspect_ratio.den);
+ if (st->sample_aspect_ratio.num) {
+ int d_width = codec->width*av_q2d(st->sample_aspect_ratio);
+ put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width);
+ put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height);
+ put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYUNIT, 3);
}
end_ebml_master(pb, subinfo);
break;
- case CODEC_TYPE_AUDIO:
+ case AVMEDIA_TYPE_AUDIO:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_AUDIO);
- if (!native_id) {
- ebml_master wav_header;
+ if (!native_id)
// no mkv-specific ID, use ACM mode
- codec->codec_tag = codec_get_tag(codec_wav_tags, codec->codec_id);
- if (!codec->codec_tag) {
- av_log(s, AV_LOG_ERROR, "no codec id found for stream %d", i);
- return -1;
- }
-
- put_ebml_string(pb, MATROSKA_ID_CODECID, MATROSKA_CODEC_ID_AUDIO_ACM);
- wav_header = start_ebml_master(pb, MATROSKA_ID_CODECPRIVATE, 0);
- put_wav_header(pb, codec);
- end_ebml_master(pb, wav_header);
- }
+ put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");
+
subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , codec->channels);
put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
end_ebml_master(pb, subinfo);
break;
- case CODEC_TYPE_SUBTITLE:
- put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_SUBTITLE);
- break;
+ case AVMEDIA_TYPE_SUBTITLE:
+ put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_SUBTITLE);
+ break;
default:
- av_log(s, AV_LOG_ERROR, "Only audio and video are supported for Matroska.");
+ av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.");
break;
}
+ ret = mkv_write_codecprivate(s, pb, codec, native_id, qt_id);
+ if (ret < 0) return ret;
+
end_ebml_master(pb, track);
// ms precision is the de-facto standard timescale for mkv files
return 0;
}
+static int mkv_write_chapters(AVFormatContext *s)
+{
+ MatroskaMuxContext *mkv = s->priv_data;
+ ByteIOContext *pb = s->pb;
+ ebml_master chapters, editionentry;
+ AVRational scale = {1, 1E9};
+ int i, ret;
+
+ if (!s->nb_chapters)
+ return 0;
+
+ ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CHAPTERS, url_ftell(pb));
+ if (ret < 0) return ret;
+
+ chapters = start_ebml_master(pb, MATROSKA_ID_CHAPTERS , 0);
+ editionentry = start_ebml_master(pb, MATROSKA_ID_EDITIONENTRY, 0);
+ put_ebml_uint(pb, MATROSKA_ID_EDITIONFLAGDEFAULT, 1);
+ put_ebml_uint(pb, MATROSKA_ID_EDITIONFLAGHIDDEN , 0);
+ for (i = 0; i < s->nb_chapters; i++) {
+ ebml_master chapteratom, chapterdisplay;
+ AVChapter *c = s->chapters[i];
+ AVMetadataTag *t = NULL;
+
+ chapteratom = start_ebml_master(pb, MATROSKA_ID_CHAPTERATOM, 0);
+ put_ebml_uint(pb, MATROSKA_ID_CHAPTERUID, c->id);
+ put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMESTART,
+ av_rescale_q(c->start, c->time_base, scale));
+ put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMEEND,
+ av_rescale_q(c->end, c->time_base, scale));
+ put_ebml_uint(pb, MATROSKA_ID_CHAPTERFLAGHIDDEN , 0);
+ put_ebml_uint(pb, MATROSKA_ID_CHAPTERFLAGENABLED, 1);
+ if ((t = av_metadata_get(c->metadata, "title", NULL, 0))) {
+ chapterdisplay = start_ebml_master(pb, MATROSKA_ID_CHAPTERDISPLAY, 0);
+ put_ebml_string(pb, MATROSKA_ID_CHAPSTRING, t->value);
+ put_ebml_string(pb, MATROSKA_ID_CHAPLANG , "und");
+ end_ebml_master(pb, chapterdisplay);
+ }
+ end_ebml_master(pb, chapteratom);
+ }
+ end_ebml_master(pb, editionentry);
+ end_ebml_master(pb, chapters);
+ return 0;
+}
+
+static void mkv_write_simpletag(ByteIOContext *pb, AVMetadataTag *t)
+{
+ uint8_t *key = av_strdup(t->key);
+ uint8_t *p = key;
+ const uint8_t *lang = NULL;
+ ebml_master tag;
+
+ if ((p = strrchr(p, '-')) &&
+ (lang = av_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL)))
+ *p = 0;
+
+ p = key;
+ while (*p) {
+ if (*p == ' ')
+ *p = '_';
+ else if (*p >= 'a' && *p <= 'z')
+ *p -= 'a' - 'A';
+ p++;
+ }
+
+ tag = start_ebml_master(pb, MATROSKA_ID_SIMPLETAG, 0);
+ put_ebml_string(pb, MATROSKA_ID_TAGNAME, key);
+ if (lang)
+ put_ebml_string(pb, MATROSKA_ID_TAGLANG, lang);
+ put_ebml_string(pb, MATROSKA_ID_TAGSTRING, t->value);
+ end_ebml_master(pb, tag);
+
+ av_freep(&key);
+}
+
+static int mkv_write_tag(AVFormatContext *s, AVMetadata *m, unsigned int elementid,
+ unsigned int uid, ebml_master *tags)
+{
+ MatroskaMuxContext *mkv = s->priv_data;
+ ebml_master tag, targets;
+ AVMetadataTag *t = NULL;
+ int ret;
+
+ if (!tags->pos) {
+ ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TAGS, url_ftell(s->pb));
+ if (ret < 0) return ret;
+
+ *tags = start_ebml_master(s->pb, MATROSKA_ID_TAGS, 0);
+ }
+
+ tag = start_ebml_master(s->pb, MATROSKA_ID_TAG, 0);
+ targets = start_ebml_master(s->pb, MATROSKA_ID_TAGTARGETS, 0);
+ if (elementid)
+ put_ebml_uint(s->pb, elementid, uid);
+ end_ebml_master(s->pb, targets);
+
+ while ((t = av_metadata_get(m, "", t, AV_METADATA_IGNORE_SUFFIX)))
+ if (strcasecmp(t->key, "title"))
+ mkv_write_simpletag(s->pb, t);
+
+ end_ebml_master(s->pb, tag);
+ return 0;
+}
+
+static int mkv_write_tags(AVFormatContext *s)
+{
+ ebml_master tags = {0};
+ int i, ret;
+
+ ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL);
+
+ if (av_metadata_get(s->metadata, "", NULL, AV_METADATA_IGNORE_SUFFIX)) {
+ ret = mkv_write_tag(s, s->metadata, 0, 0, &tags);
+ if (ret < 0) return ret;
+ }
+
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+
+ if (!av_metadata_get(st->metadata, "", 0, AV_METADATA_IGNORE_SUFFIX))
+ continue;
+
+ ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &tags);
+ if (ret < 0) return ret;
+ }
+
+ for (i = 0; i < s->nb_chapters; i++) {
+ AVChapter *ch = s->chapters[i];
+
+ if (!av_metadata_get(ch->metadata, "", NULL, AV_METADATA_IGNORE_SUFFIX))
+ continue;
+
+ ret = mkv_write_tag(s, ch->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID, ch->id, &tags);
+ if (ret < 0) return ret;
+ }
+
+ if (tags.pos)
+ end_ebml_master(s->pb, tags);
+ return 0;
+}
+
static int mkv_write_header(AVFormatContext *s)
{
MatroskaMuxContext *mkv = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
ebml_master ebml_header, segment_info;
+ AVMetadataTag *tag;
+ int ret, i;
+
+ if (!strcmp(s->oformat->name, "webm")) mkv->mode = MODE_WEBM;
+ else mkv->mode = MODE_MATROSKAv2;
- mkv->md5_ctx = av_mallocz(av_md5_size);
- av_md5_init(mkv->md5_ctx);
+ mkv->tracks = av_mallocz(s->nb_streams * sizeof(*mkv->tracks));
+ if (!mkv->tracks)
+ return AVERROR(ENOMEM);
ebml_header = start_ebml_master(pb, EBML_ID_HEADER, 0);
put_ebml_uint (pb, EBML_ID_EBMLVERSION , 1);
put_ebml_uint (pb, EBML_ID_EBMLREADVERSION , 1);
put_ebml_uint (pb, EBML_ID_EBMLMAXIDLENGTH , 4);
put_ebml_uint (pb, EBML_ID_EBMLMAXSIZELENGTH , 8);
- put_ebml_string (pb, EBML_ID_DOCTYPE , "matroska");
+ put_ebml_string (pb, EBML_ID_DOCTYPE , s->oformat->name);
put_ebml_uint (pb, EBML_ID_DOCTYPEVERSION , 2);
put_ebml_uint (pb, EBML_ID_DOCTYPEREADVERSION , 2);
end_ebml_master(pb, ebml_header);
mkv->segment = start_ebml_master(pb, MATROSKA_ID_SEGMENT, 0);
mkv->segment_offset = url_ftell(pb);
- // we write 2 seek heads - one at the end of the file to point to each cluster, and
- // one at the beginning to point to all other level one elements (including the seek
- // head at the end of the file), which isn't more than 10 elements if we only write one
- // of each other currently defined level 1 element
+ // we write 2 seek heads - one at the end of the file to point to each
+ // cluster, and one at the beginning to point to all other level one
+ // elements (including the seek head at the end of the file), which
+ // isn't more than 10 elements if we only write one of each other
+ // currently defined level 1 element
mkv->main_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 10);
- mkv->cluster_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 0);
+ if (!mkv->main_seekhead)
+ return AVERROR(ENOMEM);
- if (mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_INFO, url_ftell(pb)) < 0)
- return -1;
+ ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_INFO, url_ftell(pb));
+ if (ret < 0) return ret;
segment_info = start_ebml_master(pb, MATROSKA_ID_INFO, 0);
put_ebml_uint(pb, MATROSKA_ID_TIMECODESCALE, 1000000);
- if (strlen(s->title))
- put_ebml_string(pb, MATROSKA_ID_TITLE, s->title);
+ if ((tag = av_metadata_get(s->metadata, "title", NULL, 0)))
+ put_ebml_string(pb, MATROSKA_ID_TITLE, tag->value);
if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
+ uint32_t segment_uid[4];
+ AVLFG lfg;
+
+ av_lfg_init(&lfg, av_get_random_seed());
+
+ for (i = 0; i < 4; i++)
+ segment_uid[i] = av_lfg_get(&lfg);
+
put_ebml_string(pb, MATROSKA_ID_MUXINGAPP , LIBAVFORMAT_IDENT);
put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, LIBAVFORMAT_IDENT);
-
- // reserve space to write the segment UID later
- mkv->segment_uid = url_ftell(pb);
- put_ebml_void(pb, 19);
+ put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
}
// reserve space for the duration
put_ebml_void(pb, 11); // assumes double-precision float to be written
end_ebml_master(pb, segment_info);
- if (mkv_write_tracks(s) < 0)
- return -1;
+ ret = mkv_write_tracks(s);
+ if (ret < 0) return ret;
- if (mkv_add_seekhead_entry(mkv->cluster_seekhead, MATROSKA_ID_CLUSTER, url_ftell(pb)) < 0)
- return -1;
+ if (mkv->mode != MODE_WEBM) {
+ ret = mkv_write_chapters(s);
+ if (ret < 0) return ret;
+
+ ret = mkv_write_tags(s);
+ if (ret < 0) return ret;
+ }
- mkv->cluster_pos = url_ftell(pb);
- mkv->cluster = start_ebml_master(pb, MATROSKA_ID_CLUSTER, 0);
- put_ebml_uint(pb, MATROSKA_ID_CLUSTERTIMECODE, 0);
- mkv->cluster_pts = 0;
+ if (url_is_streamed(s->pb))
+ mkv_write_seekhead(pb, mkv->main_seekhead);
mkv->cues = mkv_start_cues(mkv->segment_offset);
if (mkv->cues == NULL)
- return -1;
+ return AVERROR(ENOMEM);
- return 0;
-}
+ av_init_packet(&mkv->cur_audio_pkt);
+ mkv->cur_audio_pkt.size = 0;
+ mkv->audio_buffer_size = 0;
-static int mkv_block_size(AVPacket *pkt)
-{
- int size = 4; // track num + timecode + flags
- return size + pkt->size;
+ put_flush_packet(pb);
+ return 0;
}
-static int mkv_blockgroup_size(AVPacket *pkt)
+static int mkv_blockgroup_size(int pkt_size)
{
- int size = mkv_block_size(pkt);
- size += ebml_size_bytes(size);
+ int size = pkt_size + 4;
+ size += ebml_num_size(size);
size += 2; // EBML ID for block and block duration
size += 8; // max size of block duration
- size += ebml_size_bytes(size);
+ size += ebml_num_size(size);
size += 1; // blockgroup EBML ID
return size;
}
-static void mkv_write_block(AVFormatContext *s, unsigned int blockid, AVPacket *pkt, int flags)
+static int ass_get_duration(const uint8_t *p)
+{
+ int sh, sm, ss, sc, eh, em, es, ec;
+ uint64_t start, end;
+
+ if (sscanf(p, "%*[^,],%d:%d:%d%*c%d,%d:%d:%d%*c%d",
+ &sh, &sm, &ss, &sc, &eh, &em, &es, &ec) != 8)
+ return 0;
+ start = 3600000*sh + 60000*sm + 1000*ss + 10*sc;
+ end = 3600000*eh + 60000*em + 1000*es + 10*ec;
+ return end - start;
+}
+
+static int mkv_write_ass_blocks(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
{
MatroskaMuxContext *mkv = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ int i, layer = 0, max_duration = 0, size, line_size, data_size = pkt->size;
+ uint8_t *start, *end, *data = pkt->data;
+ ebml_master blockgroup;
+ char buffer[2048];
+
+ while (data_size) {
+ int duration = ass_get_duration(data);
+ max_duration = FFMAX(duration, max_duration);
+ end = memchr(data, '\n', data_size);
+ size = line_size = end ? end-data+1 : data_size;
+ size -= end ? (end[-1]=='\r')+1 : 0;
+ start = data;
+ for (i=0; i<3; i++, start++)
+ if (!(start = memchr(start, ',', size-(start-data))))
+ return max_duration;
+ size -= start - data;
+ sscanf(data, "Dialogue: %d,", &layer);
+ i = snprintf(buffer, sizeof(buffer), "%"PRId64",%d,",
+ s->streams[pkt->stream_index]->nb_frames++, layer);
+ size = FFMIN(i+size, sizeof(buffer));
+ memcpy(buffer+i, start, size-i);
+
+ av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
+ "pts %" PRId64 ", duration %d\n",
+ url_ftell(pb), size, pkt->pts, duration);
+ blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, mkv_blockgroup_size(size));
+ put_ebml_id(pb, MATROSKA_ID_BLOCK);
+ put_ebml_num(pb, size+4, 0);
+ put_byte(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
+ put_be16(pb, pkt->pts - mkv->cluster_pts);
+ put_byte(pb, 0);
+ put_buffer(pb, buffer, size);
+ put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration);
+ end_ebml_master(pb, blockgroup);
+
+ data += line_size;
+ data_size -= line_size;
+ }
+
+ return max_duration;
+}
+
+static void mkv_write_block(AVFormatContext *s, ByteIOContext *pb,
+ unsigned int blockid, AVPacket *pkt, int flags)
+{
+ MatroskaMuxContext *mkv = s->priv_data;
+ AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
+ uint8_t *data = NULL;
+ int size = pkt->size;
+ int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
- av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n",
+ av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
+ "pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n",
url_ftell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration, flags);
+ if (codec->codec_id == CODEC_ID_H264 && codec->extradata_size > 0 &&
+ (AV_RB24(codec->extradata) == 1 || AV_RB32(codec->extradata) == 1))
+ ff_avc_parse_nal_units_buf(pkt->data, &data, &size);
+ else
+ data = pkt->data;
put_ebml_id(pb, blockid);
- put_ebml_size(pb, mkv_block_size(pkt), 0);
+ put_ebml_num(pb, size+4, 0);
put_byte(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
- put_be16(pb, pkt->pts - mkv->cluster_pts);
+ put_be16(pb, ts - mkv->cluster_pts);
put_byte(pb, flags);
- put_buffer(pb, pkt->data, pkt->size);
+ put_buffer(pb, data, size);
+ if (data != pkt->data)
+ av_free(data);
}
-static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
+static int srt_get_duration(uint8_t **buf)
+{
+ int i, duration = 0;
+
+ for (i=0; i<2 && !duration; i++) {
+ int s_hour, s_min, s_sec, s_hsec, e_hour, e_min, e_sec, e_hsec;
+ if (sscanf(*buf, "%d:%2d:%2d%*1[,.]%3d --> %d:%2d:%2d%*1[,.]%3d",
+ &s_hour, &s_min, &s_sec, &s_hsec,
+ &e_hour, &e_min, &e_sec, &e_hsec) == 8) {
+ s_min += 60*s_hour; e_min += 60*e_hour;
+ s_sec += 60*s_min; e_sec += 60*e_min;
+ s_hsec += 1000*s_sec; e_hsec += 1000*e_sec;
+ duration = e_hsec - s_hsec;
+ }
+ *buf += strcspn(*buf, "\n") + 1;
+ }
+ return duration;
+}
+
+static int mkv_write_srt_blocks(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
+{
+ ebml_master blockgroup;
+ AVPacket pkt2 = *pkt;
+ int64_t duration = srt_get_duration(&pkt2.data);
+ pkt2.size -= pkt2.data - pkt->data;
+
+ blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP,
+ mkv_blockgroup_size(pkt2.size));
+ mkv_write_block(s, pb, MATROSKA_ID_BLOCK, &pkt2, 0);
+ put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration);
+ end_ebml_master(pb, blockgroup);
+
+ return duration;
+}
+
+static void mkv_flush_dynbuf(AVFormatContext *s)
{
MatroskaMuxContext *mkv = s->priv_data;
- ByteIOContext *pb = &s->pb;
- AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
- int keyframe = !!(pkt->flags & PKT_FLAG_KEY);
+ int bufsize;
+ uint8_t *dyn_buf;
- // start a new cluster every 5 MB or 5 sec
- if (url_ftell(pb) > mkv->cluster_pos + 5*1024*1024 || pkt->pts > mkv->cluster_pts + 5000) {
- av_log(s, AV_LOG_DEBUG, "Starting new cluster at offset %" PRIu64 " bytes, pts %" PRIu64 "\n", url_ftell(pb), pkt->pts);
- end_ebml_master(pb, mkv->cluster);
+ if (!mkv->dyn_bc)
+ return;
- if (mkv_add_seekhead_entry(mkv->cluster_seekhead, MATROSKA_ID_CLUSTER, url_ftell(pb)) < 0)
- return -1;
+ bufsize = url_close_dyn_buf(mkv->dyn_bc, &dyn_buf);
+ put_buffer(s->pb, dyn_buf, bufsize);
+ av_free(dyn_buf);
+ mkv->dyn_bc = NULL;
+}
+
+static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
+{
+ MatroskaMuxContext *mkv = s->priv_data;
+ ByteIOContext *pb = s->pb;
+ AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
+ int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
+ int duration = pkt->duration;
+ int ret;
+ int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
+
+ if (ts == AV_NOPTS_VALUE) {
+ av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n");
+ return AVERROR(EINVAL);
+ }
+
+ if (url_is_streamed(s->pb)) {
+ if (!mkv->dyn_bc)
+ url_open_dyn_buf(&mkv->dyn_bc);
+ pb = mkv->dyn_bc;
+ }
- mkv->cluster_pos = url_ftell(pb);
+ if (!mkv->cluster_pos) {
+ mkv->cluster_pos = url_ftell(s->pb);
mkv->cluster = start_ebml_master(pb, MATROSKA_ID_CLUSTER, 0);
- put_ebml_uint(pb, MATROSKA_ID_CLUSTERTIMECODE, pkt->pts);
- mkv->cluster_pts = pkt->pts;
- av_md5_update(mkv->md5_ctx, pkt->data, FFMIN(200, pkt->size));
+ put_ebml_uint(pb, MATROSKA_ID_CLUSTERTIMECODE, FFMAX(0, ts));
+ mkv->cluster_pts = FFMAX(0, ts);
}
- if (codec->codec_type != CODEC_TYPE_SUBTITLE) {
- mkv_write_block(s, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe << 7);
+ if (codec->codec_type != AVMEDIA_TYPE_SUBTITLE) {
+ mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe << 7);
+ } else if (codec->codec_id == CODEC_ID_SSA) {
+ duration = mkv_write_ass_blocks(s, pb, pkt);
+ } else if (codec->codec_id == CODEC_ID_SRT) {
+ duration = mkv_write_srt_blocks(s, pb, pkt);
} else {
- ebml_master blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, mkv_blockgroup_size(pkt));
- mkv_write_block(s, MATROSKA_ID_BLOCK, pkt, 0);
- put_ebml_uint(pb, MATROSKA_ID_DURATION, pkt->duration);
+ ebml_master blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, mkv_blockgroup_size(pkt->size));
+ duration = pkt->convergence_duration;
+ mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 0);
+ put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration);
end_ebml_master(pb, blockgroup);
}
- if (codec->codec_type == CODEC_TYPE_VIDEO && keyframe) {
- if (mkv_add_cuepoint(mkv->cues, pkt, mkv->cluster_pos) < 0)
- return -1;
+ if (codec->codec_type == AVMEDIA_TYPE_VIDEO && keyframe) {
+ ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, ts, mkv->cluster_pos);
+ if (ret < 0) return ret;
}
- mkv->duration = pkt->pts + pkt->duration;
+ mkv->duration = FFMAX(mkv->duration, ts + duration);
+ return 0;
+}
+
+static int mkv_copy_packet(MatroskaMuxContext *mkv, const AVPacket *pkt)
+{
+ uint8_t *data = mkv->cur_audio_pkt.data;
+ mkv->cur_audio_pkt = *pkt;
+ mkv->cur_audio_pkt.data = av_fast_realloc(data, &mkv->audio_buffer_size, pkt->size);
+ if (!mkv->cur_audio_pkt.data)
+ return AVERROR(ENOMEM);
+
+ memcpy(mkv->cur_audio_pkt.data, pkt->data, pkt->size);
+ mkv->cur_audio_pkt.size = pkt->size;
return 0;
}
+static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ MatroskaMuxContext *mkv = s->priv_data;
+ ByteIOContext *pb = url_is_streamed(s->pb) ? mkv->dyn_bc : s->pb;
+ AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
+ int ret, keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
+ int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
+ int cluster_size = url_ftell(pb) - (url_is_streamed(s->pb) ? 0 : mkv->cluster_pos);
+
+ // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or
+ // after 4k and on a keyframe
+ if (mkv->cluster_pos &&
+ ((url_is_streamed(s->pb) && (cluster_size > 32*1024 || ts > mkv->cluster_pts + 1000))
+ || cluster_size > 5*1024*1024 || ts > mkv->cluster_pts + 5000
+ || (codec->codec_type == AVMEDIA_TYPE_VIDEO && keyframe && cluster_size > 4*1024))) {
+ av_log(s, AV_LOG_DEBUG, "Starting new cluster at offset %" PRIu64
+ " bytes, pts %" PRIu64 "\n", url_ftell(pb), ts);
+ end_ebml_master(pb, mkv->cluster);
+ mkv->cluster_pos = 0;
+ if (mkv->dyn_bc)
+ mkv_flush_dynbuf(s);
+ }
+
+ // check if we have an audio packet cached
+ if (mkv->cur_audio_pkt.size > 0) {
+ ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt);
+ mkv->cur_audio_pkt.size = 0;
+ if (ret < 0) {
+ av_log(s, AV_LOG_ERROR, "Could not write cached audio packet ret:%d\n", ret);
+ return ret;
+ }
+ }
+
+ // buffer an audio packet to ensure the packet containing the video
+ // keyframe's timecode is contained in the same cluster for WebM
+ if (codec->codec_type == AVMEDIA_TYPE_AUDIO)
+ ret = mkv_copy_packet(mkv, pkt);
+ else
+ ret = mkv_write_packet_internal(s, pkt);
+ return ret;
+}
+
static int mkv_write_trailer(AVFormatContext *s)
{
MatroskaMuxContext *mkv = s->priv_data;
- ByteIOContext *pb = &s->pb;
- offset_t currentpos, second_seekhead, cuespos;
+ ByteIOContext *pb = s->pb;
+ int64_t currentpos, cuespos;
+ int ret;
+
+ // check if we have an audio packet cached
+ if (mkv->cur_audio_pkt.size > 0) {
+ ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt);
+ mkv->cur_audio_pkt.size = 0;
+ if (ret < 0) {
+ av_log(s, AV_LOG_ERROR, "Could not write cached audio packet ret:%d\n", ret);
+ return ret;
+ }
+ }
- end_ebml_master(pb, mkv->cluster);
+ if (mkv->dyn_bc) {
+ end_ebml_master(mkv->dyn_bc, mkv->cluster);
+ mkv_flush_dynbuf(s);
+ } else if (mkv->cluster_pos) {
+ end_ebml_master(pb, mkv->cluster);
+ }
- cuespos = mkv_write_cues(pb, mkv->cues, s->nb_streams);
- second_seekhead = mkv_write_seekhead(pb, mkv->cluster_seekhead);
+ if (!url_is_streamed(pb)) {
+ cuespos = mkv_write_cues(pb, mkv->cues, s->nb_streams);
- mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CUES , cuespos);
- mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_SEEKHEAD, second_seekhead);
- mkv_write_seekhead(pb, mkv->main_seekhead);
+ ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CUES , cuespos);
+ if (ret < 0) return ret;
+ mkv_write_seekhead(pb, mkv->main_seekhead);
- // update the duration
- av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration);
- currentpos = url_ftell(pb);
- url_fseek(pb, mkv->duration_offset, SEEK_SET);
- put_ebml_float(pb, MATROSKA_ID_DURATION, mkv->duration);
+ // update the duration
+ av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration);
+ currentpos = url_ftell(pb);
+ url_fseek(pb, mkv->duration_offset, SEEK_SET);
+ put_ebml_float(pb, MATROSKA_ID_DURATION, mkv->duration);
- // write the md5sum of some frames as the segment UID
- if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
- uint8_t segment_uid[16];
- av_md5_final(mkv->md5_ctx, segment_uid);
- url_fseek(pb, mkv->segment_uid, SEEK_SET);
- put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16);
+ url_fseek(pb, currentpos, SEEK_SET);
}
- url_fseek(pb, currentpos, SEEK_SET);
end_ebml_master(pb, mkv->segment);
- av_free(mkv->md5_ctx);
+ av_free(mkv->tracks);
+ av_destruct_packet(&mkv->cur_audio_pkt);
+ put_flush_packet(pb);
return 0;
}
+#if CONFIG_MATROSKA_MUXER
AVOutputFormat matroska_muxer = {
"matroska",
- "Matroska File Format",
+ NULL_IF_CONFIG_SMALL("Matroska file format"),
"video/x-matroska",
"mkv",
sizeof(MatroskaMuxContext),
mkv_write_header,
mkv_write_packet,
mkv_write_trailer,
- .codec_tag = (const AVCodecTag*[]){codec_bmp_tags, codec_wav_tags, 0},
+ .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
+ .codec_tag = (const AVCodecTag* const []){ff_codec_bmp_tags, ff_codec_wav_tags, 0},
.subtitle_codec = CODEC_ID_TEXT,
};
+#endif
+
+#if CONFIG_WEBM_MUXER
+AVOutputFormat webm_muxer = {
+ "webm",
+ NULL_IF_CONFIG_SMALL("WebM file format"),
+ "video/webm",
+ "webm",
+ sizeof(MatroskaMuxContext),
+ CODEC_ID_VORBIS,
+ CODEC_ID_VP8,
+ mkv_write_header,
+ mkv_write_packet,
+ mkv_write_trailer,
+ .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
+};
+#endif
+#if CONFIG_MATROSKA_AUDIO_MUXER
AVOutputFormat matroska_audio_muxer = {
"matroska",
- "Matroska File Format",
+ NULL_IF_CONFIG_SMALL("Matroska file format"),
"audio/x-matroska",
"mka",
sizeof(MatroskaMuxContext),
mkv_write_header,
mkv_write_packet,
mkv_write_trailer,
- .codec_tag = (const AVCodecTag*[]){codec_wav_tags, 0},
+ .flags = AVFMT_GLOBALHEADER,
+ .codec_tag = (const AVCodecTag* const []){ff_codec_wav_tags, 0},
};
+#endif