[FFmpeg-devel] [PATCH] avformat/mpegts: add skip_unknown_pids option

[Aman Gupta]

From: Aman Gupta <aman at tmm1.net>

Allows the user to skip streams that are not advertised in the PMT.
---
 libavformat/mpegts.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index 629631f60a..5464f48a8d 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -143,6 +143,7 @@ struct MpegTSContext {
 
     int skip_changes;
     int skip_clear;
+    int skip_unknown_pids;
 
     int scan_all_pmts;
 
@@ -176,6 +177,8 @@ static const AVOption options[] = {
      {.i64 = 0}, 0, 1, 0 },
     {"skip_clear", "skip clearing programs", offsetof(MpegTSContext, skip_clear), AV_OPT_TYPE_BOOL,
      {.i64 = 0}, 0, 1, 0 },
+    {"skip_unknown_pids", "skip streams not advertised in PMT", offsetof(MpegTSContext, skip_unknown_pids), AV_OPT_TYPE_BOOL,
+     {.i64 = 0}, 0, 1, 0 },
     { NULL },
 };
 
@@ -1058,7 +1061,7 @@ static int mpegts_push_data(MpegTSFilter *filter,
 
                     /* stream not present in PMT */
                     if (!pes->st) {
-                        if (ts->skip_changes)
+                        if (ts->skip_changes || ts->skip_unknown_pids)
                             goto skip;
 
                         pes->st = avformat_new_stream(ts->stream, NULL);
@@ -2011,6 +2014,8 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
     if (!ts->scan_all_pmts && ts->skip_changes)
         return;
 
+    if (ts->skip_unknown_pids && !get_program(ts, h->id))
+        return;
     if (!ts->skip_clear)
         clear_program(ts, h->id);
 
-- 
2.14.2