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matroska: K&R formatting cosmetics

tags/n2.3
Luca Barbato 11 years ago
parent
d0449e7545
commit
f1f6156b3f
1 changed files with 212 additions and 168 deletions
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  1. +212
    -168
      libavformat/matroskaenc.c

+ 212
- 168
libavformat/matroskaenc.c View File

@@ -122,19 +122,18 @@ typedef struct MatroskaMuxContext {
#define MAX_CUETRACKPOS_SIZE 22

/** 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

#define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE * num_tracks

static int ebml_id_size(unsigned int id)
{
return (av_log2(id+1)-1)/7+1;
return (av_log2(id + 1) - 1) / 7 + 1;
}

static void put_ebml_id(AVIOContext *pb, unsigned int id)
{
int i = ebml_id_size(id);
while (i--)
avio_w8(pb, id >> (i*8));
avio_w8(pb, id >> (i * 8));
}

/**
@@ -156,7 +155,8 @@ static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
static int ebml_num_size(uint64_t num)
{
int bytes = 1;
while ((num+1) >> bytes*7) bytes++;
while ((num + 1) >> bytes * 7)
bytes++;
return bytes;
}

@@ -171,7 +171,7 @@ static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
int i, needed_bytes = ebml_num_size(num);

// sizes larger than this are currently undefined in EBML
assert(num < (1ULL<<56)-1);
assert(num < (1ULL << 56) - 1);

if (bytes == 0)
// don't care how many bytes are used, so use the min
@@ -180,21 +180,22 @@ static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
// that we need to use, so write unknown size. This shouldn't happen.
assert(bytes >= needed_bytes);

num |= 1ULL << bytes*7;
num |= 1ULL << bytes * 7;
for (i = bytes - 1; i >= 0; i--)
avio_w8(pb, num >> i*8);
avio_w8(pb, num >> i * 8);
}

static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
{
int i, bytes = 1;
uint64_t tmp = val;
while (tmp>>=8) bytes++;
while (tmp >>= 8)
bytes++;

put_ebml_id(pb, elementid);
put_ebml_num(pb, bytes, 0);
for (i = bytes - 1; i >= 0; i--)
avio_w8(pb, val >> i*8);
avio_w8(pb, val >> i * 8);
}

static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
@@ -212,7 +213,8 @@ static void put_ebml_binary(AVIOContext *pb, unsigned int elementid,
avio_write(pb, buf, size);
}

static void put_ebml_string(AVIOContext *pb, unsigned int elementid, const char *str)
static void put_ebml_string(AVIOContext *pb, unsigned int elementid,
const char *str)
{
put_ebml_binary(pb, elementid, str, strlen(str));
}
@@ -234,19 +236,20 @@ static void put_ebml_void(AVIOContext *pb, uint64_t size)
// 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_num(pb, size-1, 0);
put_ebml_num(pb, size - 1, 0);
else
put_ebml_num(pb, size-9, 8);
while(avio_tell(pb) < currentpos + size)
put_ebml_num(pb, size - 9, 8);
while (avio_tell(pb) < currentpos + size)
avio_w8(pb, 0);
}

static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid, uint64_t expectedsize)
static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid,
uint64_t expectedsize)
{
int bytes = expectedsize ? ebml_num_size(expectedsize) : 8;
put_ebml_id(pb, elementid);
put_ebml_size_unknown(pb, bytes);
return (ebml_master){ avio_tell(pb), bytes };
return (ebml_master) {avio_tell(pb), bytes };
}

static void end_ebml_master(AVIOContext *pb, ebml_master master)
@@ -278,7 +281,8 @@ static void put_xiph_size(AVIOContext *pb, int size)
* @param numelements The maximum number of elements that will be indexed
* by this seek head, 0 if unlimited.
*/
static mkv_seekhead * mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset, int numelements)
static mkv_seekhead *mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset,
int numelements)
{
mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead));
if (new_seekhead == NULL)
@@ -292,7 +296,7 @@ static mkv_seekhead * mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset
// 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;
new_seekhead->max_entries = numelements;
put_ebml_void(pb, new_seekhead->reserved_size);
}
return new_seekhead;
@@ -371,7 +375,7 @@ fail:
return currentpos;
}

static mkv_cues * mkv_start_cues(int64_t segment_offset)
static mkv_cues *mkv_start_cues(int64_t segment_offset)
{
mkv_cues *cues = av_mallocz(sizeof(mkv_cues));
if (cues == NULL)
@@ -515,13 +519,15 @@ static int put_flac_codecpriv(AVFormatContext *s,
return 0;
}

static void get_aac_sample_rates(AVFormatContext *s, 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)
{
MPEG4AudioConfig mp4ac;

if (avpriv_mpeg4audio_get_config(&mp4ac, codec->extradata,
codec->extradata_size * 8, 1) < 0) {
av_log(s, AV_LOG_WARNING, "Error parsing AAC extradata, unable to determine samplerate.\n");
av_log(s, AV_LOG_WARNING,
"Error parsing AAC extradata, unable to determine samplerate.\n");
return;
}

@@ -529,27 +535,32 @@ static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, int
*output_sample_rate = mp4ac.ext_sample_rate;
}

static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec, int native_id, int qt_id)
static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb,
AVCodecContext *codec, int native_id,
int qt_id)
{
AVIOContext *dyn_cp;
uint8_t *codecpriv;
int ret, codecpriv_size;

ret = avio_open_dyn_buf(&dyn_cp);
if(ret < 0)
if (ret < 0)
return ret;

if (native_id) {
if (codec->codec_id == AV_CODEC_ID_VORBIS || codec->codec_id == AV_CODEC_ID_THEORA)
if (codec->codec_id == AV_CODEC_ID_VORBIS ||
codec->codec_id == AV_CODEC_ID_THEORA)
ret = put_xiph_codecpriv(s, dyn_cp, codec);
else if (codec->codec_id == AV_CODEC_ID_FLAC)
ret = put_flac_codecpriv(s, dyn_cp, codec);
else if (codec->codec_id == AV_CODEC_ID_WAVPACK)
ret = put_wv_codecpriv(dyn_cp, codec);
else if (codec->codec_id == AV_CODEC_ID_H264)
ret = ff_isom_write_avcc(dyn_cp, codec->extradata, codec->extradata_size);
ret = ff_isom_write_avcc(dyn_cp, codec->extradata,
codec->extradata_size);
else if (codec->codec_id == AV_CODEC_ID_HEVC)
ret = ff_isom_write_hvcc(dyn_cp, codec->extradata, codec->extradata_size, 0);
ret = ff_isom_write_hvcc(dyn_cp, codec->extradata,
codec->extradata_size, 0);
else if (codec->codec_id == AV_CODEC_ID_ALAC) {
if (codec->extradata_size < 36) {
av_log(s, AV_LOG_ERROR,
@@ -558,19 +569,20 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecCo
ret = AVERROR_INVALIDDATA;
} else
avio_write(dyn_cp, codec->extradata + 12,
codec->extradata_size - 12);
}
else if (codec->extradata_size)
codec->extradata_size - 12);
} else if (codec->extradata_size)
avio_write(dyn_cp, codec->extradata, codec->extradata_size);
} else if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
if (qt_id) {
if (!codec->codec_tag)
codec->codec_tag = ff_codec_get_tag(ff_codec_movvideo_tags, codec->codec_id);
codec->codec_tag = ff_codec_get_tag(ff_codec_movvideo_tags,
codec->codec_id);
if (codec->extradata_size)
avio_write(dyn_cp, codec->extradata, codec->extradata_size);
} else {
if (!codec->codec_tag)
codec->codec_tag = ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id);
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;
@@ -578,7 +590,6 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecCo

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);
@@ -594,7 +605,8 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecCo

codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv);
if (codecpriv_size)
put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codecpriv, codecpriv_size);
put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codecpriv,
codecpriv_size);
av_free(codecpriv);
return ret;
}
@@ -607,7 +619,8 @@ static int mkv_write_tracks(AVFormatContext *s)
int i, j, ret;

ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TRACKS, avio_tell(pb));
if (ret < 0) return ret;
if (ret < 0)
return ret;

tracks = start_ebml_master(pb, MATROSKA_ID_TRACKS, 0);
for (i = 0; i < s->nb_streams; i++) {
@@ -680,89 +693,90 @@ static int mkv_write_tracks(AVFormatContext *s)
}

switch (codec->codec_type) {
case AVMEDIA_TYPE_VIDEO:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO);
if (st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0)
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1E9 / av_q2d(st->avg_frame_rate));
if (!native_id &&
ff_codec_get_tag(ff_codec_movvideo_tags, codec->codec_id) &&
(!ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id)
|| codec->codec_id == AV_CODEC_ID_SVQ1
|| codec->codec_id == AV_CODEC_ID_SVQ3
|| codec->codec_id == AV_CODEC_ID_CINEPAK))
qt_id = 1;
if (qt_id)
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
else if (!native_id) {
// if there is no mkv-specific codec ID, use VFW mode
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
mkv->tracks[i].write_dts = 1;
}
case AVMEDIA_TYPE_VIDEO:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO);
if (st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0)
put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1E9 / av_q2d(st->avg_frame_rate));
if (!native_id &&
ff_codec_get_tag(ff_codec_movvideo_tags, codec->codec_id) &&
(!ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id) ||
codec->codec_id == AV_CODEC_ID_SVQ1 ||
codec->codec_id == AV_CODEC_ID_SVQ3 ||
codec->codec_id == AV_CODEC_ID_CINEPAK))
qt_id = 1;
if (qt_id)
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME");
else if (!native_id) {
// if there is no mkv-specific codec ID, use VFW mode
put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC");
mkv->tracks[i].write_dts = 1;
}

subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
// XXX: interlace flag?
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width);
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height);
if ((tag = av_dict_get(s->metadata, "stereo_mode", NULL, 0))) {
uint8_t stereo_fmt = atoi(tag->value);
int valid_fmt = 0;

switch (mkv->mode) {
case MODE_WEBM:
if (stereo_fmt <= MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM
|| stereo_fmt == MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT)
valid_fmt = 1;
break;
case MODE_MATROSKAv2:
if (stereo_fmt <= MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_RL)
valid_fmt = 1;
break;
}

if (valid_fmt)
put_ebml_uint (pb, MATROSKA_ID_VIDEOSTEREOMODE, stereo_fmt);
}
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);
subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0);
// XXX: interlace flag?
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width);
put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height);
if ((tag = av_dict_get(s->metadata, "stereo_mode", NULL, 0))) {
uint8_t stereo_fmt = atoi(tag->value);
int valid_fmt = 0;

switch (mkv->mode) {
case MODE_WEBM:
if (stereo_fmt <= MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM ||
stereo_fmt == MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT)
valid_fmt = 1;
break;
case MODE_MATROSKAv2:
if (stereo_fmt <= MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_RL)
valid_fmt = 1;
break;
}
end_ebml_master(pb, subinfo);
break;

case AVMEDIA_TYPE_AUDIO:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_AUDIO);

if (!native_id)
// no mkv-specific ID, use ACM mode
put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");

subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , codec->channels);
put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
if (output_sample_rate)
put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
if (bit_depth)
put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth);
end_ebml_master(pb, subinfo);
break;

case AVMEDIA_TYPE_SUBTITLE:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_SUBTITLE);
if (!native_id) {
av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", codec->codec_id);
return AVERROR(ENOSYS);
}
break;
default:
av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n");
break;
if (valid_fmt)
put_ebml_uint (pb, MATROSKA_ID_VIDEOSTEREOMODE, stereo_fmt);
}
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 AVMEDIA_TYPE_AUDIO:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_AUDIO);

if (!native_id)
// no mkv-specific ID, use ACM mode
put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM");

subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0);
put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , codec->channels);
put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
if (output_sample_rate)
put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
if (bit_depth)
put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth);
end_ebml_master(pb, subinfo);
break;

case AVMEDIA_TYPE_SUBTITLE:
put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_SUBTITLE);
if (!native_id) {
av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", codec->codec_id);
return AVERROR(ENOSYS);
}
break;
default:
av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n");
break;
}
ret = mkv_write_codecprivate(s, pb, codec, native_id, qt_id);
if (ret < 0) return ret;
if (ret < 0)
return ret;

end_ebml_master(pb, track);
}
@@ -983,8 +997,10 @@ static int mkv_write_header(AVFormatContext *s)
AVDictionaryEntry *tag;
int ret, i;

if (!strcmp(s->oformat->name, "webm")) mkv->mode = MODE_WEBM;
else mkv->mode = MODE_MATROSKAv2;
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)
@@ -1028,7 +1044,7 @@ static int mkv_write_header(AVFormatContext *s)
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_MUXINGAPP, LIBAVFORMAT_IDENT);
if ((tag = av_dict_get(s->metadata, "encoding_tool", NULL, 0)))
put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, tag->value);
else
@@ -1043,17 +1059,21 @@ static int mkv_write_header(AVFormatContext *s)
end_ebml_master(pb, segment_info);

ret = mkv_write_tracks(s);
if (ret < 0) return ret;
if (ret < 0)
return ret;

if (mkv->mode != MODE_WEBM) {
ret = mkv_write_chapters(s);
if (ret < 0) return ret;
if (ret < 0)
return ret;

ret = mkv_write_tags(s);
if (ret < 0) return ret;
if (ret < 0)
return ret;

ret = mkv_write_attachments(s);
if (ret < 0) return ret;
if (ret < 0)
return ret;
}

if (!s->pb->seekable)
@@ -1109,12 +1129,13 @@ static int ass_get_duration(const uint8_t *p)
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;
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, AVIOContext *pb, AVPacket *pkt)
static int mkv_write_ass_blocks(AVFormatContext *s, AVIOContext *pb,
AVPacket *pkt)
{
MatroskaMuxContext *mkv = s->priv_data;
int i, layer = 0, max_duration = 0, size, line_size, data_size = pkt->size;
@@ -1125,34 +1146,37 @@ static int mkv_write_ass_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *p
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))))
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,",
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);
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, "
av_log(s, AV_LOG_DEBUG,
"Writing block at offset %" PRIu64 ", size %d, "
"pts %" PRId64 ", duration %d\n",
avio_tell(pb), size, pkt->pts, duration);
blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, mkv_blockgroup_size(size));
blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP,
mkv_blockgroup_size(size));
put_ebml_id(pb, MATROSKA_ID_BLOCK);
put_ebml_num(pb, size+4, 0);
avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
put_ebml_num(pb, size + 4, 0);
// this assumes stream_index is less than 126
avio_w8(pb, 0x80 | (pkt->stream_index + 1));
avio_wb16(pb, pkt->pts - mkv->cluster_pts);
avio_w8(pb, 0);
avio_write(pb, buffer, size);
put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration);
end_ebml_master(pb, blockgroup);

data += line_size;
data += line_size;
data_size -= line_size;
}

@@ -1243,13 +1267,14 @@ static void mkv_write_block(AVFormatContext *s, AVIOContext *pb,
if (codec->codec_id == AV_CODEC_ID_PRORES) {
/* Matroska specification requires to remove the first QuickTime atom
*/
size -= 8;
size -= 8;
offset = 8;
}

put_ebml_id(pb, blockid);
put_ebml_num(pb, size+4, 0);
avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
put_ebml_num(pb, size + 4, 0);
// this assumes stream_index is less than 126
avio_w8(pb, 0x80 | (pkt->stream_index + 1));
avio_wb16(pb, ts - mkv->cluster_pts);
avio_w8(pb, flags);
avio_write(pb, data + offset, size);
@@ -1261,14 +1286,19 @@ static int srt_get_duration(uint8_t **buf)
{
int i, duration = 0;

for (i=0; i<2 && !duration; i++) {
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;
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;
@@ -1276,7 +1306,8 @@ static int srt_get_duration(uint8_t **buf)
return duration;
}

static int mkv_write_srt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
static int mkv_write_srt_blocks(AVFormatContext *s, AVIOContext *pb,
AVPacket *pkt)
{
ebml_master blockgroup;
AVPacket pkt2 = *pkt;
@@ -1310,10 +1341,10 @@ static void mkv_flush_dynbuf(AVFormatContext *s)
static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
{
MatroskaMuxContext *mkv = s->priv_data;
AVIOContext *pb = s->pb;
AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
int duration = pkt->duration;
AVIOContext *pb = s->pb;
AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY);
int duration = pkt->duration;
int ret;
int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;

@@ -1331,7 +1362,7 @@ static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt)

if (!mkv->cluster_pos) {
mkv->cluster_pos = avio_tell(s->pb);
mkv->cluster = start_ebml_master(pb, MATROSKA_ID_CLUSTER, 0);
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);
}
@@ -1343,7 +1374,8 @@ static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
} else if (codec->codec_id == AV_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->size));
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);
@@ -1351,8 +1383,10 @@ static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
}

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;
ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, ts,
mkv->cluster_pos);
if (ret < 0)
return ret;
}

mkv->duration = FFMAX(mkv->duration, ts + duration);
@@ -1390,8 +1424,9 @@ static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
cluster_time > mkv->cluster_time_limit ||
(codec_type == AVMEDIA_TYPE_VIDEO && keyframe &&
cluster_size > 4 * 1024))) {
av_log(s, AV_LOG_DEBUG, "Starting new cluster at offset %" PRIu64
" bytes, pts %" PRIu64 "dts %" PRIu64 "\n",
av_log(s, AV_LOG_DEBUG,
"Starting new cluster at offset %" PRIu64 " bytes, "
"pts %" PRIu64 "dts %" PRIu64 "\n",
avio_tell(pb), pkt->pts, pkt->dts);
end_ebml_master(pb, mkv->cluster);
mkv->cluster_pos = 0;
@@ -1405,7 +1440,8 @@ static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt);
av_free_packet(&mkv->cur_audio_pkt);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Could not write cached audio packet ret:%d\n", ret);
av_log(s, AV_LOG_ERROR,
"Could not write cached audio packet ret:%d\n", ret);
return ret;
}
}
@@ -1434,8 +1470,9 @@ static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt)
pb = mkv->dyn_bc;
if (!pkt) {
if (mkv->cluster_pos) {
av_log(s, AV_LOG_DEBUG, "Flushing cluster at offset %" PRIu64
" bytes\n", avio_tell(pb));
av_log(s, AV_LOG_DEBUG,
"Flushing cluster at offset %" PRIu64 " bytes\n",
avio_tell(pb));
end_ebml_master(pb, mkv->cluster);
mkv->cluster_pos = 0;
if (mkv->dyn_bc)
@@ -1459,7 +1496,8 @@ static int mkv_write_trailer(AVFormatContext *s)
ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt);
av_free_packet(&mkv->cur_audio_pkt);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Could not write cached audio packet ret:%d\n", ret);
av_log(s, AV_LOG_ERROR,
"Could not write cached audio packet ret:%d\n", ret);
return ret;
}
}
@@ -1473,7 +1511,8 @@ static int mkv_write_trailer(AVFormatContext *s)

if (mkv->mode != MODE_WEBM) {
ret = mkv_write_chapters(s);
if (ret < 0) return ret;
if (ret < 0)
return ret;
}

if (pb->seekable) {
@@ -1484,25 +1523,29 @@ static int mkv_write_trailer(AVFormatContext *s)
currentpos = avio_tell(pb);
avio_seek(pb, mkv->cues_pos, SEEK_SET);

cuespos = mkv_write_cues(pb, mkv->cues, s->nb_streams);
cuespos = mkv_write_cues(pb, mkv->cues, s->nb_streams);
cues_end = avio_tell(pb);
if (cues_end > cuespos + mkv->reserve_cues_space) {
av_log(s, AV_LOG_ERROR, "Insufficient space reserved for cues: %d "
"(needed: %"PRId64").\n", mkv->reserve_cues_space,
cues_end - cuespos);
av_log(s, AV_LOG_ERROR,
"Insufficient space reserved for cues: %d "
"(needed: %" PRId64 ").\n",
mkv->reserve_cues_space, cues_end - cuespos);
return AVERROR(EINVAL);
}

if (cues_end < cuespos + mkv->reserve_cues_space)
put_ebml_void(pb, mkv->reserve_cues_space - (cues_end - cuespos));
put_ebml_void(pb, mkv->reserve_cues_space -
(cues_end - cuespos));

avio_seek(pb, currentpos, SEEK_SET);
} else {
cuespos = mkv_write_cues(pb, mkv->cues, s->nb_streams);
}

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_CUES,
cuespos);
if (ret < 0)
return ret;
}

mkv_write_seekhead(pb, mkv->main_seekhead);
@@ -1531,8 +1574,9 @@ static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
if (ff_mkv_codec_tags[i].id == codec_id)
return 1;

if (std_compliance < FF_COMPLIANCE_NORMAL) { // mkv theoretically supports any
enum AVMediaType type = avcodec_get_type(codec_id); // video/audio through VFW/ACM
if (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;
}


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