[FFmpeg-cvslog] avformat/mpegts: Factorize version checking code out

[Michael Niedermayer]

ffmpeg | branch: release/2.4 | Michael Niedermayer <michaelni at gmx.at> | Wed Apr 29 22:24:09 2015 +0200| [3d296c0ec1d517260a658f02b5404def689918ab] | committer: Michael Niedermayer

avformat/mpegts: Factorize version checking code out

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 4e8d01f20ce82b49f47c704a461c5d30866affaf)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3d296c0ec1d517260a658f02b5404def689918ab
---

 libavformat/mpegts.c |   22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index 455615f..62ecd64 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -568,6 +568,16 @@ typedef struct SectionHeader {
     uint8_t last_sec_num;
 } SectionHeader;
 
+static int skip_identical(const SectionHeader *h, MpegTSSectionFilter *tssf)
+{
+    if (h->version == tssf->last_ver)
+        return 1;
+
+    tssf->last_ver = h->version;
+
+    return 0;
+}
+
 static inline int get8(const uint8_t **pp, const uint8_t *p_end)
 {
     const uint8_t *p;
@@ -1455,9 +1465,8 @@ static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section,
         return;
     if (h.tid != M4OD_TID)
         return;
-    if (h.version == tssf->last_ver)
+    if (skip_identical(&h, tssf))
         return;
-    tssf->last_ver = h.version;
 
     mp4_read_od(s, p, (unsigned) (p_end - p), mp4_descr, &mp4_descr_count,
                 MAX_MP4_DESCR_COUNT);
@@ -1749,9 +1758,8 @@ 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)
+    if (skip_identical(h, tssf))
         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);
@@ -1917,9 +1925,8 @@ static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
     if (ts->skip_changes)
         return;
 
-    if (h->version == tssf->last_ver)
+    if (skip_identical(h, tssf))
         return;
-    tssf->last_ver = h->version;
     ts->stream->ts_id = h->id;
 
     clear_programs(ts);
@@ -1990,9 +1997,8 @@ 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)
+    if (skip_identical(h, tssf))
         return;
-    tssf->last_ver = h->version;
 
     onid = get16(&p, p_end);
     if (onid < 0)