[FFmpeg-cvslog] avformat/mpegtsenc: simplify code for condition checks

[Limin Wang]

ffmpeg | branch: master | Limin Wang <lance.lmwang at gmail.com> | Wed Jul  8 10:40:10 2020 +0800| [cf81d64282167fc232d28c9e3c12ea8f2246f9fb] | committer: Limin Wang

avformat/mpegtsenc: simplify code for condition checks

Reviewed-by: Marton Balint <cus at passwd.hu>
Signed-off-by: Limin Wang <lance.lmwang at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=cf81d64282167fc232d28c9e3c12ea8f2246f9fb
---

 libavformat/mpegtsenc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index d827ba3e28..2d7a8ab326 100644
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -483,16 +483,18 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
         /* write optional descriptors here */
         switch (st->codecpar->codec_type) {
         case AVMEDIA_TYPE_AUDIO:
-            if (st->codecpar->codec_id==AV_CODEC_ID_AC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) {
+            if (ts->flags & MPEGTS_FLAG_SYSTEM_B) {
+            if (st->codecpar->codec_id==AV_CODEC_ID_AC3) {
                 *q++=0x6a; // AC3 descriptor see A038 DVB SI
                 *q++=1; // 1 byte, all flags sets to 0
                 *q++=0; // omit all fields...
             }
-            if (st->codecpar->codec_id==AV_CODEC_ID_EAC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) {
+            else if (st->codecpar->codec_id==AV_CODEC_ID_EAC3) {
                 *q++=0x7a; // EAC3 descriptor see A038 DVB SI
                 *q++=1; // 1 byte, all flags sets to 0
                 *q++=0; // omit all fields...
             }
+            }
             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) {