#include "isom.h"
#include "matroska.h"
#include "avc.h"
-#include "libavutil/md5.h"
+#include "flacenc.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/random_seed.h"
+#include "libavutil/lfg.h"
#include "libavcodec/xiph.h"
#include "libavcodec/mpeg4audio.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;
}
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_num(pb, size, 0);
}
/**
- * Writes a void element of a given size. Useful for reserving space in
+ * 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);
assert(size >= 2);
static void end_ebml_master(ByteIOContext *pb, ebml_master master)
{
- offset_t pos = url_ftell(pb);
+ int64_t pos = url_ftell(pb);
- // leave the unknown size for masters when streaming
- if (url_is_streamed(pb))
+ if (url_fseek(pb, master.pos - master.sizebytes, SEEK_SET) < 0)
return;
-
- url_fseek(pb, master.pos - master.sizebytes, SEEK_SET);
put_ebml_num(pb, pos - master.pos, master.sizebytes);
url_fseek(pb, pos, SEEK_SET);
}
* @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)
* 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++) {
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;
if (entries == NULL)
return AVERROR(ENOMEM);
- entries[cues->num_entries ].pts = pkt->pts;
- entries[cues->num_entries ].tracknum = pkt->stream_index + 1;
+ if (ts < 0)
+ return 0;
+
+ 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;
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 0;
}
-#define FLAC_STREAMINFO_SIZE 34
-
-static int put_flac_codecpriv(AVFormatContext *s, ByteIOContext *pb, AVCodecContext *codec)
-{
- // if the extradata_size is greater than FLAC_STREAMINFO_SIZE,
- // assume that it's in Matroska format already
- if (codec->extradata_size < FLAC_STREAMINFO_SIZE) {
- av_log(s, AV_LOG_ERROR, "Invalid FLAC extradata\n");
- return -1;
- } else if (codec->extradata_size == FLAC_STREAMINFO_SIZE) {
- // only the streaminfo packet
- put_buffer(pb, "fLaC", 4);
- put_byte(pb, 0x80);
- put_be24(pb, FLAC_STREAMINFO_SIZE);
- } else if(memcmp("fLaC", codec->extradata, 4)) {
- av_log(s, AV_LOG_ERROR, "Invalid FLAC extradata\n");
- return -1;
- }
- put_buffer(pb, codec->extradata, codec->extradata_size);
- return 0;
-}
-
static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, int *sample_rate, int *output_sample_rate)
{
int sri;
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 = put_flac_codecpriv(s, dyn_cp, codec);
+ 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 == CODEC_TYPE_VIDEO) {
+ } else if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
if (qt_id) {
if (!codec->codec_tag)
- codec->codec_tag = codec_get_tag(codec_movvideo_tags, codec->codec_id);
+ 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 = codec_get_tag(codec_bmp_tags, codec->codec_id);
- if (!codec->codec_tag) {
- av_log(s, AV_LOG_ERROR, "No bmp codec ID found.");
- ret = -1;
- }
+ 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;
+ }
- put_bmp_header(dyn_cp, codec, codec_bmp_tags, 0);
+ ff_put_bmp_header(dyn_cp, codec, ff_codec_bmp_tags, 0);
}
- } else if (codec->codec_type == CODEC_TYPE_AUDIO) {
- if (!codec->codec_tag)
- codec->codec_tag = codec_get_tag(codec_wav_tags, codec->codec_id);
- if (!codec->codec_tag) {
- av_log(s, AV_LOG_ERROR, "No wav codec ID found.");
+ } 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;
- put_wav_header(dyn_cp, codec);
+ ff_put_wav_header(dyn_cp, codec);
}
codecpriv_size = url_close_dyn_buf(dyn_cp, &codecpriv);
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_format(codec->sample_fmt);
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");
- put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGDEFAULT, !!(st->disposition & AV_DISPOSITION_DEFAULT));
+ 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
}
}
+ 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);
+ put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, av_q2d(codec->time_base)*1E9);
if (!native_id &&
- codec_get_tag(codec_movvideo_tags, codec->codec_id) &&
- (!codec_get_tag(codec_bmp_tags, codec->codec_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))
if (qt_id)
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
- else if (!native_id)
+ 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?
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)
end_ebml_master(pb, subinfo);
break;
- case CODEC_TYPE_SUBTITLE:
+ case AVMEDIA_TYPE_SUBTITLE:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_SUBTITLE);
break;
default:
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 int mkv_write_header(AVFormatContext *s)
{
MatroskaMuxContext *mkv = s->priv_data;
ByteIOContext *pb = s->pb;
ebml_master ebml_header, segment_info;
- int ret;
+ AVMetadataTag *tag;
+ int ret, i;
- mkv->md5_ctx = av_mallocz(av_md5_size);
- av_md5_init(mkv->md5_ctx);
+ if (!strcmp(s->oformat->name, "webm")) mkv->mode = MODE_WEBM;
+ else mkv->mode = MODE_MATROSKAv2;
+
+ 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);
// 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 == NULL || mkv->cluster_seekhead == NULL)
+ if (!mkv->main_seekhead)
return AVERROR(ENOMEM);
ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_INFO, url_ftell(pb));
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
ret = mkv_write_tracks(s);
if (ret < 0) return ret;
- ret = mkv_add_seekhead_entry(mkv->cluster_seekhead, MATROSKA_ID_CLUSTER, url_ftell(pb));
- if (ret < 0) return ret;
+ if (mkv->mode != MODE_WEBM) {
+ ret = mkv_write_chapters(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 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);
+ 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
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",
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_num(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 void mkv_flush_dynbuf(AVFormatContext *s)
+{
+ MatroskaMuxContext *mkv = s->priv_data;
+ int bufsize;
+ uint8_t *dyn_buf;
+
+ if (!mkv->dyn_bc)
+ return;
+
+ 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 & PKT_FLAG_KEY);
+ 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;
- // 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);
-
- ret = mkv_add_seekhead_entry(mkv->cluster_seekhead, MATROSKA_ID_CLUSTER, url_ftell(pb));
- if (ret < 0) return ret;
+ if (ts == AV_NOPTS_VALUE) {
+ av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n");
+ return AVERROR(EINVAL);
+ }
- mkv->cluster_pos = url_ftell(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));
+ if (url_is_streamed(s->pb)) {
+ if (!mkv->dyn_bc)
+ url_open_dyn_buf(&mkv->dyn_bc);
+ pb = mkv->dyn_bc;
}
- if (codec->codec_id == CODEC_ID_H264 &&
- codec->extradata_size > 0 && AV_RB32(codec->extradata) == 0x00000001) {
- /* from x264 or from bytestream h264 */
- /* nal reformating needed */
- int ret = ff_avc_parse_nal_units(pkt->data, &pkt->data, &pkt->size);
- if (ret < 0)
- return ret;
- assert(pkt->size);
+ 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, 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 {
- 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) {
- ret = mkv_add_cuepoint(mkv->cues, pkt, mkv->cluster_pos);
+ 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 = FFMAX(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;
+ int64_t currentpos, cuespos;
int ret;
- end_ebml_master(pb, mkv->cluster);
+ // 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;
+ }
+ }
+
+ 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);
+ }
if (!url_is_streamed(pb)) {
cuespos = mkv_write_cues(pb, mkv->cues, s->nb_streams);
- second_seekhead = mkv_write_seekhead(pb, mkv->cluster_seekhead);
ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CUES , cuespos);
if (ret < 0) return ret;
- ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_SEEKHEAD, second_seekhead);
- if (ret < 0) return ret;
mkv_write_seekhead(pb, mkv->main_seekhead);
// update the duration
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);
}
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",
NULL_IF_CONFIG_SMALL("Matroska file format"),
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",
NULL_IF_CONFIG_SMALL("Matroska file format"),
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
projects / ffmpeg / blobdiff