Merge commit '844201e35fe575710be8218d45828df49b77f205' into release/2.4

* commit '844201e35fe575710be8218d45828df49b77f205':
  mpegts: Update the PSI/SI table only if the version change

Conflicts:
	libavformat/mpegts.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 20 insertions, 0 deletions

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index 88082692b1..3fe6aa460c 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -75,6 +75,7 @@ typedef void SetServiceCallback (void *opaque, int ret);
 typedef struct MpegTSSectionFilter {
     int section_index;
     int section_h_size;
+    int last_ver;
     uint8_t *section_buf;
     unsigned int check_crc : 1;
     unsigned int end_of_section_reached : 1;
@@ -459,6 +460,8 @@ static MpegTSFilter *mpegts_open_section_filter(MpegTSContext *ts,
     sec->opaque      = opaque;
     sec->section_buf = av_malloc(MAX_SECTION_SIZE);
     sec->check_crc   = check_crc;
+    sec->last_ver    = -1;
+
     if (!sec->section_buf) {
         av_free(filter);
         return NULL;
@@ -1437,6 +1440,7 @@ static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section,
                     int section_len)
 {
     MpegTSContext *ts = filter->u.section_filter.opaque;
+    MpegTSSectionFilter *tssf = &filter->u.section_filter;
     SectionHeader h;
     const uint8_t *p, *p_end;
     AVIOContext pb;
@@ -1451,6 +1455,9 @@ static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section,
         return;
     if (h.tid != M4OD_TID)
         return;
+    if (h.version == tssf->last_ver)
+        return;
+    tssf->last_ver = h.version;
 
     mp4_read_od(s, p, (unsigned) (p_end - p), mp4_descr, &mp4_descr_count,
                 MAX_MP4_DESCR_COUNT);
@@ -1720,6 +1727,7 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type
 static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
 {
     MpegTSContext *ts = filter->u.section_filter.opaque;
+    MpegTSSectionFilter *tssf = &filter->u.section_filter;
     SectionHeader h1, *h = &h1;
     PESContext *pes;
     AVStream *st;
@@ -1739,6 +1747,9 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
     p = section;
     if (parse_section_header(h, &p, p_end) < 0)
         return;
+    if (h->version == tssf->last_ver)
+        return;
+    tssf->last_ver = h->version;
 
     av_dlog(ts->stream, "sid=0x%x sec_num=%d/%d\n",
             h->id, h->sec_num, h->last_sec_num);
@@ -1886,6 +1897,7 @@ out:
 static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
 {
     MpegTSContext *ts = filter->u.section_filter.opaque;
+    MpegTSSectionFilter *tssf = &filter->u.section_filter;
     SectionHeader h1, *h = &h1;
     const uint8_t *p, *p_end;
     int sid, pmt_pid;
@@ -1903,6 +1915,9 @@ static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
     if (ts->skip_changes)
         return;
 
+    if (h->version == tssf->last_ver)
+        return;
+    tssf->last_ver = h->version;
     ts->stream->ts_id = h->id;
 
     clear_programs(ts);
@@ -1956,6 +1971,7 @@ static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
 static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
 {
     MpegTSContext *ts = filter->u.section_filter.opaque;
+    MpegTSSectionFilter *tssf = &filter->u.section_filter;
     SectionHeader h1, *h = &h1;
     const uint8_t *p, *p_end, *desc_list_end, *desc_end;
     int onid, val, sid, desc_list_len, desc_tag, desc_len, service_type;
@@ -1972,6 +1988,10 @@ static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
         return;
     if (ts->skip_changes)
         return;
+    if (h->version == tssf->last_ver)
+        return;
+    tssf->last_ver = h->version;
+
     onid = get16(&p, p_end);
     if (onid < 0)
         return;