From: Limin Wang <lance.lmw...@gmail.com>
Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
---
libavformat/mpegtsenc.c | 45 +++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 43 insertions(+), 2 deletions(-)
diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index 718ddab..a5b45fb 100644
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -486,9 +486,50 @@ static int mpegts_write_pmt(AVFormatContext *s,
MpegTSService *service)
case AVMEDIA_TYPE_AUDIO:
if (ts->flags & MPEGTS_FLAG_SYSTEM_B) {
if (codec_id == AV_CODEC_ID_AC3) {
+ int len = 1;
+ uint8_t component_type_flag = 0;
+ uint8_t bsid_flag = 0;
+ uint8_t mainid_flag = 0;
+ uint8_t asvc_flag = 0;
+ uint8_t componenet_type_value, bsid_value, mainid_value,
asvc_value;
+ AVDictionaryEntry *component_type =
av_dict_get(st->metadata, "dvb.ac3_desc.component_type", NULL, 0);
+ AVDictionaryEntry *bsid = av_dict_get(st->metadata,
"dvb.ac3_desc.bsid", NULL, 0);
+ AVDictionaryEntry *mainid = av_dict_get(st->metadata,
"dvb.ac3_desc.mainid", NULL, 0);
+ AVDictionaryEntry *asvc = av_dict_get(st->metadata,
"dvb.ac3_desc.asvc", NULL, 0);
+
*q++=0x6a; // AC3 descriptor see A038 DVB SI
- *q++=1; // 1 byte, all flags sets to 0
- *q++=0; // omit all fields...
+
+ if (component_type) {
+ component_type_flag = 1;
+ componenet_type_value = atoi(component_type->value);
+ len ++;
+ }
+ if (bsid) {
+ bsid_flag = 1;
+ bsid_value = atoi(bsid->value);
+ len ++;
+ }
+ if (mainid) {
+ mainid_flag = 1;
+ mainid_value = atoi(mainid->value);
+ len ++;
+ }
+ if (asvc) {
+ asvc_flag = 1;
+ asvc_value = atoi(asvc->value);
+ len ++;
+ }
+
+ *q++ = len;
+ *q++ = component_type_flag << 7 | bsid_flag << 6 |
mainid_flag << 5 | asvc_flag << 4;
+ if (component_type_flag)
+ *q++ = componenet_type_value;
+ if (bsid_flag)
+ *q++ = bsid_value;
+ if (mainid_flag)
+ *q++ = mainid_value;
+ if (asvc_flag)
+ *q++ = asvc_value;
} else if (codec_id == AV_CODEC_ID_EAC3) {
*q++=0x7a; // EAC3 descriptor see A038 DVB SI
*q++=1; // 1 byte, all flags sets to 0
--
1.8.3.1
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