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avformat/mpegts: Factorize version checking code out

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 4e8d01f20c)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-04-29 22:24:09 +02:00
parent 52242a387b
commit 3d296c0ec1
1 changed files with 14 additions and 8 deletions
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22
libavformat/mpegts.c
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@ -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)