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vformat/matroskaenc: factorize alpha code in mkv_write_block() 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-05-17 13:58:07 +02:00
parent 8ffcc826b3
commit 2fb193b1e7
1 changed files with 14 additions and 19 deletions
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33
libavformat/matroskaenc.c
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@ -1146,6 +1146,7 @@ static void mkv_write_block(AVFormatContext *s, AVIOContext *pb,
int offset = 0, size = pkt->size, side_data_size = 0;
int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts;
uint64_t additional_id = 0;
ebml_master block_group, block_additions, block_more;
av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, "
"pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n",
@ -1173,16 +1174,20 @@ static void mkv_write_block(AVFormatContext *s, AVIOContext *pb,
}
if (side_data_size && additional_id == 1) {
ebml_master block_group, block_additions, block_more;
block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0);
put_ebml_id(pb, MATROSKA_ID_BLOCK);
put_ebml_num(pb, size+4, 0);
avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // track number
avio_wb16(pb, ts - mkv->cluster_pts);
avio_w8(pb, flags);
avio_write(pb, data + offset, size);
if (data != pkt->data)
av_free(data);
blockid = MATROSKA_ID_BLOCK;
}
put_ebml_id(pb, blockid);
put_ebml_num(pb, size+4, 0);
avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
avio_wb16(pb, ts - mkv->cluster_pts);
avio_w8(pb, flags);
avio_write(pb, data + offset, size);
if (data != pkt->data)
av_free(data);
if (side_data_size && additional_id == 1) {
block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0);
block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0);
put_ebml_uint(pb, MATROSKA_ID_BLOCKADDID, 1);
@ -1193,16 +1198,6 @@ static void mkv_write_block(AVFormatContext *s, AVIOContext *pb,
end_ebml_master(pb, block_additions);
end_ebml_master(pb, block_group);
}
else {
put_ebml_id(pb, blockid);
put_ebml_num(pb, size+4, 0);
avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126
avio_wb16(pb, ts - mkv->cluster_pts);
avio_w8(pb, flags);
avio_write(pb, data + offset, size);
if (data != pkt->data)
av_free(data);
}
}
static int srt_get_duration(uint8_t **buf)