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体验新版 GitCode,发现更多精彩内容 >>
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5d4d67e0
编写于
1月 02, 2006
作者:
N
Nico Sabbi
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电子邮件补丁
差异文件
added support for DVHS (192) packet size
Originally committed as revision 4801 to
svn://svn.ffmpeg.org/ffmpeg/trunk
上级
f007d358
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
12 addition
and
7 deletion
+12
-7
libavformat/mpegts.c
libavformat/mpegts.c
+11
-7
libavformat/mpegts.h
libavformat/mpegts.h
+1
-0
未找到文件。
libavformat/mpegts.c
浏览文件 @
5d4d67e0
...
...
@@ -246,17 +246,19 @@ static int analyze(const uint8_t *buf, int size, int packet_size, int *index){
/* autodetect fec presence. Must have at least 1024 bytes */
static
int
get_packet_size
(
const
uint8_t
*
buf
,
int
size
)
{
int
score
,
fec_score
;
int
score
,
fec_score
,
dvhs_score
;
if
(
size
<
(
TS_FEC_PACKET_SIZE
*
5
+
1
))
return
-
1
;
score
=
analyze
(
buf
,
size
,
TS_PACKET_SIZE
,
NULL
);
dvhs_score
=
analyze
(
buf
,
size
,
TS_DVHS_PACKET_SIZE
,
NULL
);
fec_score
=
analyze
(
buf
,
size
,
TS_FEC_PACKET_SIZE
,
NULL
);
// av_log(NULL, AV_LOG_DEBUG, "score: %d,
fec_score: %d \n",
score, fec_score);
// av_log(NULL, AV_LOG_DEBUG, "score: %d,
dvhs_score: %d, fec_score: %d \n", score, dvhs_
score, fec_score);
if
(
score
>
fec_score
)
return
TS_PACKET_SIZE
;
else
if
(
score
<
fec_score
)
return
TS_FEC_PACKET_SIZE
;
if
(
score
>
fec_score
&&
score
>
dvhs_score
)
return
TS_PACKET_SIZE
;
else
if
(
dvhs_score
>
score
&&
dvhs_score
>
fec_score
)
return
TS_DVHS_PACKET_SIZE
;
else
if
(
score
<
fec_score
&&
dvhs_score
<
fec_score
)
return
TS_FEC_PACKET_SIZE
;
else
return
-
1
;
}
...
...
@@ -1094,18 +1096,20 @@ static int mpegts_probe(AVProbeData *p)
{
#if 1
const
int
size
=
p
->
buf_size
;
int
score
,
fec_score
;
int
score
,
fec_score
,
dvhs_score
;
#define CHECK_COUNT 10
if
(
size
<
(
TS_FEC_PACKET_SIZE
*
CHECK_COUNT
))
return
-
1
;
score
=
analyze
(
p
->
buf
,
TS_PACKET_SIZE
*
CHECK_COUNT
,
TS_PACKET_SIZE
,
NULL
);
dvhs_score
=
analyze
(
p
->
buf
,
TS_DVHS_PACKET_SIZE
*
CHECK_COUNT
,
TS_DVHS_PACKET_SIZE
,
NULL
);
fec_score
=
analyze
(
p
->
buf
,
TS_FEC_PACKET_SIZE
*
CHECK_COUNT
,
TS_FEC_PACKET_SIZE
,
NULL
);
// av_log(NULL, AV_LOG_DEBUG, "score: %d,
fec_score: %d \n",
score, fec_score);
// av_log(NULL, AV_LOG_DEBUG, "score: %d,
dvhs_score: %d, fec_score: %d \n", score, dvhs_
score, fec_score);
// we need a clear definition for the returned score otherwise things will become messy sooner or later
if
(
score
>
fec_score
&&
score
>
6
)
return
AVPROBE_SCORE_MAX
+
score
-
CHECK_COUNT
;
if
(
score
>
fec_score
&&
score
>
dvhs_score
&&
score
>
6
)
return
AVPROBE_SCORE_MAX
+
score
-
CHECK_COUNT
;
else
if
(
dvhs_score
>
score
&&
dvhs_score
>
fec_score
&&
dvhs_score
>
6
)
return
AVPROBE_SCORE_MAX
+
dvhs_score
-
CHECK_COUNT
;
else
if
(
fec_score
>
6
)
return
AVPROBE_SCORE_MAX
+
fec_score
-
CHECK_COUNT
;
else
return
-
1
;
#else
...
...
libavformat/mpegts.h
浏览文件 @
5d4d67e0
...
...
@@ -18,6 +18,7 @@
*/
#define TS_FEC_PACKET_SIZE 204
#define TS_DVHS_PACKET_SIZE 192
#define TS_PACKET_SIZE 188
#define NB_PID_MAX 8192
#define MAX_SECTION_SIZE 4096
...
...
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