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avformat/mpegtsenc: factorize writing registration_descriptor 

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2019-02-23 00:09:12 +01:00
parent 007c13e51e
commit fe36dcbff2
1 changed files with 18 additions and 32 deletions
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50
libavformat/mpegtsenc.c
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@ -270,6 +270,18 @@ static void putbuf(uint8_t **q_ptr, const uint8_t *buf, size_t len)
*q_ptr += len;
}
static void put_registration_descriptor(uint8_t **q_ptr, uint32_t tag)
{
uint8_t *q = *q_ptr;
*q++ = 0x05; /* MPEG-2 registration descriptor*/
*q++ = 4;
*q++ = tag;
*q++ = tag >> 8;
*q++ = tag >> 16;
*q++ = tag >> 24;
*q_ptr = q;
}
static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
{
MpegTSWrite *ts = s->priv_data;
@ -396,14 +408,8 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
*q++=1; // 1 byte, all flags sets to 0
*q++=0; // omit all fields...
}
if (st->codecpar->codec_id==AV_CODEC_ID_S302M) {
*q++ = 0x05; /* MPEG-2 registration descriptor*/
*q++ = 4;
*q++ = 'B';
*q++ = 'S';
*q++ = 'S';
*q++ = 'D';
}
if (st->codecpar->codec_id==AV_CODEC_ID_S302M)
put_registration_descriptor(&q, MKTAG('B', 'S', 'S', 'D'));
if (st->codecpar->codec_id==AV_CODEC_ID_OPUS) {
/* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
if (q - data > SECTION_LENGTH - 6 - 4) {
@ -411,12 +417,7 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
break;
}
*q++ = 0x05; /* MPEG-2 registration descriptor*/
*q++ = 4;
*q++ = 'O';
*q++ = 'p';
*q++ = 'u';
*q++ = 's';
put_registration_descriptor(&q, MKTAG('O', 'p', 'u', 's'));
*q++ = 0x7f; /* DVB extension descriptor */
*q++ = 2;
@ -602,29 +603,14 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
break;
case AVMEDIA_TYPE_VIDEO:
if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
*q++ = 0x05; /*MPEG-2 registration descriptor*/
*q++ = 4;
*q++ = 'd';
*q++ = 'r';
*q++ = 'a';
*q++ = 'c';
put_registration_descriptor(&q, MKTAG('d', 'r', 'a', 'c'));
} else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
*q++ = 0x05; /*MPEG-2 registration descriptor*/
*q++ = 4;
*q++ = 'V';
*q++ = 'C';
*q++ = '-';
*q++ = '1';
put_registration_descriptor(&q, MKTAG('V', 'C', '-', '1'));
}
break;
case AVMEDIA_TYPE_DATA:
if (st->codecpar->codec_id == AV_CODEC_ID_SMPTE_KLV) {
*q++ = 0x05; /* MPEG-2 registration descriptor */
*q++ = 4;
*q++ = 'K';
*q++ = 'L';
*q++ = 'V';
*q++ = 'A';
put_registration_descriptor(&q, MKTAG('K', 'L', 'V', 'A'));
} else if (st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
const char *tag = "ID3 ";
*q++ = 0x26; /* metadata descriptor */