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体验新版 GitCode,发现更多精彩内容 >>
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c4ac052b
编写于
2月 07, 2005
作者:
M
Michael Niedermayer
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
set timestamps correctly
Originally committed as revision 3944 to
svn://svn.ffmpeg.org/ffmpeg/trunk
上级
cd461d48
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
82 addition
and
26 deletion
+82
-26
libavformat/mov.c
libavformat/mov.c
+82
-26
未找到文件。
libavformat/mov.c
浏览文件 @
c4ac052b
...
...
@@ -232,6 +232,8 @@ typedef struct MOVStreamContext {
int64_t
*
chunk_offsets
;
int
stts_count
;
Time2Sample
*
stts_data
;
int
ctts_count
;
Time2Sample
*
ctts_data
;
int
edit_count
;
/* number of 'edit' (elst atom) */
long
sample_to_chunk_sz
;
MOV_sample_to_chunk_tbl
*
sample_to_chunk
;
...
...
@@ -239,6 +241,8 @@ typedef struct MOVStreamContext {
int
sample_to_time_index
;
long
sample_to_time_sample
;
uint64_t
sample_to_time_time
;
int
sample_to_ctime_index
;
int
sample_to_ctime_sample
;
long
sample_size
;
long
sample_count
;
long
*
sample_sizes
;
...
...
@@ -1338,6 +1342,33 @@ av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1,
return
0
;
}
static
int
mov_read_ctts
(
MOVContext
*
c
,
ByteIOContext
*
pb
,
MOV_atom_t
atom
)
{
// AVStream *st = c->fc->streams[c->fc->nb_streams-1];
//MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
unsigned
int
i
,
entries
;
print_atom
(
"ctts"
,
atom
);
get_byte
(
pb
);
/* version */
get_byte
(
pb
);
get_byte
(
pb
);
get_byte
(
pb
);
/* flags */
entries
=
get_be32
(
pb
);
if
(
entries
>=
UINT_MAX
/
sizeof
(
Time2Sample
))
return
-
1
;
c
->
streams
[
c
->
fc
->
nb_streams
-
1
]
->
ctts_count
=
entries
;
c
->
streams
[
c
->
fc
->
nb_streams
-
1
]
->
ctts_data
=
av_malloc
(
entries
*
sizeof
(
Time2Sample
));
// #ifdef DEBUG
av_log
(
NULL
,
AV_LOG_DEBUG
,
"track[%i].ctts.entries = %i
\n
"
,
c
->
fc
->
nb_streams
-
1
,
entries
);
// #endif
for
(
i
=
0
;
i
<
entries
;
i
++
)
{
c
->
streams
[
c
->
fc
->
nb_streams
-
1
]
->
ctts_data
[
i
].
count
=
get_be32
(
pb
);
c
->
streams
[
c
->
fc
->
nb_streams
-
1
]
->
ctts_data
[
i
].
duration
=
get_be32
(
pb
);
}
return
0
;
}
static
int
mov_read_trak
(
MOVContext
*
c
,
ByteIOContext
*
pb
,
MOV_atom_t
atom
)
{
AVStream
*
st
;
...
...
@@ -1520,7 +1551,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{
MKTAG
(
'c'
,
'o'
,
'6'
,
'4'
),
mov_read_stco
},
{
MKTAG
(
'c'
,
'p'
,
'r'
,
't'
),
mov_read_default
},
{
MKTAG
(
'c'
,
'r'
,
'h'
,
'd'
),
mov_read_default
},
{
MKTAG
(
'c'
,
't'
,
't'
,
's'
),
mov_read_
leaf
},
/* composition time to sample */
{
MKTAG
(
'c'
,
't'
,
't'
,
's'
),
mov_read_
ctts
},
/* composition time to sample */
{
MKTAG
(
'd'
,
'i'
,
'n'
,
'f'
),
mov_read_default
},
/* data information */
{
MKTAG
(
'd'
,
'p'
,
'n'
,
'd'
),
mov_read_leaf
},
{
MKTAG
(
'd'
,
'r'
,
'e'
,
'f'
),
mov_read_leaf
},
...
...
@@ -1597,13 +1628,14 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
static
void
mov_free_stream_context
(
MOVStreamContext
*
sc
)
{
if
(
sc
)
{
av_free
(
sc
->
chunk_offsets
);
av_free
(
sc
->
sample_to_chunk
);
av_free
(
sc
->
sample_sizes
);
av_free
(
sc
->
keyframes
);
av_free
(
sc
->
header_data
);
av_free
(
sc
->
stts_data
);
av_free
(
sc
);
av_freep
(
&
sc
->
chunk_offsets
);
av_freep
(
&
sc
->
sample_to_chunk
);
av_freep
(
&
sc
->
sample_sizes
);
av_freep
(
&
sc
->
keyframes
);
av_freep
(
&
sc
->
header_data
);
av_freep
(
&
sc
->
stts_data
);
av_freep
(
&
sc
->
ctts_data
);
av_freep
(
&
sc
);
}
}
...
...
@@ -1922,7 +1954,7 @@ readchunk:
/* find the corresponding dts */
if
(
sc
&&
sc
->
sample_to_time_index
<
sc
->
stts_count
&&
pkt
)
{
unsigned
int
count
;
uint64_t
dts
;
uint64_t
dts
,
pts
;
unsigned
int
duration
=
sc
->
stts_data
[
sc
->
sample_to_time_index
].
duration
;
count
=
sc
->
stts_data
[
sc
->
sample_to_time_index
].
count
;
if
((
sc
->
sample_to_time_sample
+
count
)
<
sc
->
current_sample
)
{
...
...
@@ -1932,22 +1964,36 @@ readchunk:
duration
=
sc
->
stts_data
[
sc
->
sample_to_time_index
].
duration
;
}
dts
=
sc
->
sample_to_time_time
+
(
sc
->
current_sample
-
1
-
sc
->
sample_to_time_sample
)
*
(
int64_t
)
duration
;
dts
=
av_rescale
(
dts
,
(
int64_t
)
s
->
streams
[
sc
->
ffindex
]
->
time_base
.
den
,
(
int64_t
)
sc
->
time_scale
*
(
int64_t
)
s
->
streams
[
sc
->
ffindex
]
->
time_base
.
num
);
pkt
->
dts
=
dts
;
//do not set pts=dts because u think it might be equal!!!!!!!!
#ifdef DEBUG
/* av_log(NULL, AV_LOG_DEBUG, "stream #%d smp #%ld dts = %ld (smp:%ld time:%ld idx:%ld ent:%d count:%ld dur:%ld)\n"
, pkt->stream_index, sc->current_sample-1, (long)pkt->dts
, (long)sc->sample_to_time_sample
, (long)sc->sample_to_time_time
, (long)sc->sample_to_time_index
, (long)sc->stts_count
, count
, duration);*/
#endif
}
/* find the corresponding pts */
if
(
sc
->
sample_to_ctime_index
<
sc
->
ctts_count
)
{
int
duration
=
sc
->
ctts_data
[
sc
->
sample_to_ctime_index
].
duration
;
int
count
=
sc
->
ctts_data
[
sc
->
sample_to_ctime_index
].
count
;
if
((
sc
->
sample_to_ctime_sample
+
count
)
<
sc
->
current_sample
)
{
sc
->
sample_to_ctime_sample
+=
count
;
sc
->
sample_to_ctime_index
++
;
duration
=
sc
->
ctts_data
[
sc
->
sample_to_ctime_index
].
duration
;
}
pts
=
dts
+
duration
;
}
else
pts
=
dts
;
pkt
->
pts
=
av_rescale
(
pts
,
(
int64_t
)
s
->
streams
[
sc
->
ffindex
]
->
time_base
.
den
,
(
int64_t
)
sc
->
time_scale
*
(
int64_t
)
s
->
streams
[
sc
->
ffindex
]
->
time_base
.
num
);
pkt
->
dts
=
av_rescale
(
dts
,
(
int64_t
)
s
->
streams
[
sc
->
ffindex
]
->
time_base
.
den
,
(
int64_t
)
sc
->
time_scale
*
(
int64_t
)
s
->
streams
[
sc
->
ffindex
]
->
time_base
.
num
);
#ifdef DEBUG
av_log
(
NULL
,
AV_LOG_DEBUG
,
"stream #%d smp #%ld dts = %lld pts = %lld (smp:%ld time:%lld idx:%d ent:%d count:%d dur:%d)
\n
"
,
pkt
->
stream_index
,
sc
->
current_sample
-
1
,
pkt
->
dts
,
pkt
->
pts
,
sc
->
sample_to_time_sample
,
sc
->
sample_to_time_time
,
sc
->
sample_to_time_index
,
sc
->
stts_count
,
count
,
duration
);
#endif
}
return
0
;
}
...
...
@@ -2160,7 +2206,17 @@ static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp
}
sample
+=
count
;
start_time
+=
count
*
duration
;
}
}
sample
=
0
;
for
(
msc
->
sample_to_ctime_index
=
0
;
msc
->
sample_to_ctime_index
<
msc
->
ctts_count
;
msc
->
sample_to_ctime_index
++
)
{
count
=
msc
->
ctts_data
[
msc
->
sample_to_ctime_index
].
count
;
duration
=
msc
->
ctts_data
[
msc
->
sample_to_ctime_index
].
duration
;
if
((
sample
+
count
-
1
)
>
msc
->
current_sample
)
{
msc
->
sample_to_ctime_sample
=
sample
;
break
;
}
sample
+=
count
;
}
#ifdef DEBUG
av_log
(
s
,
AV_LOG_DEBUG
,
"Next Sample for stream #%i is #%i @%i
\n
"
,
i
,
msc
->
current_sample
+
1
,
msc
->
sample_to_chunk_index
+
1
);
#endif
...
...
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