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Linshizhi
ffmpeg.wasm-core
Commits
4d4bc894
Commit
4d4bc894
authored
Apr 10, 2014
by
Michael Niedermayer
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avformat/mov: merge mov_read_custom_metadata() and mov_read_custom()
Signed-off-by:
Michael Niedermayer
<
michaelni@gmx.at
>
parent
6e573b77
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Showing
1 changed file
with
21 additions
and
77 deletions
+21
-77
mov.c
libavformat/mov.c
+21
-77
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libavformat/mov.c
View file @
4d4bc894
...
...
@@ -131,74 +131,6 @@ static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
return
0
;
}
static
int
mov_read_custom_metadata
(
MOVContext
*
c
,
AVIOContext
*
pb
,
MOVAtom
atom
)
{
char
key
[
1024
]
=
{
0
},
data
[
1024
]
=
{
0
};
int
i
;
AVStream
*
st
;
MOVStreamContext
*
sc
;
if
(
c
->
fc
->
nb_streams
<
1
)
return
0
;
st
=
c
->
fc
->
streams
[
c
->
fc
->
nb_streams
-
1
];
sc
=
st
->
priv_data
;
if
(
atom
.
size
<=
8
)
return
0
;
for
(
i
=
0
;
i
<
3
;
i
++
)
{
// Parse up to three sub-atoms looking for name and data.
int
data_size
=
avio_rb32
(
pb
);
int
tag
=
avio_rl32
(
pb
);
int
str_size
=
0
,
skip_size
=
0
;
char
*
target
=
NULL
;
switch
(
tag
)
{
case
MKTAG
(
'n'
,
'a'
,
'm'
,
'e'
):
avio_rb32
(
pb
);
// version/flags
str_size
=
skip_size
=
data_size
-
12
;
atom
.
size
-=
12
;
target
=
key
;
break
;
case
MKTAG
(
'd'
,
'a'
,
't'
,
'a'
):
avio_rb32
(
pb
);
// version/flags
avio_rb32
(
pb
);
// reserved (zero)
str_size
=
skip_size
=
data_size
-
16
;
atom
.
size
-=
16
;
target
=
data
;
break
;
default:
skip_size
=
data_size
-
8
;
str_size
=
0
;
break
;
}
if
(
target
)
{
str_size
=
FFMIN3
(
sizeof
(
data
)
-
1
,
str_size
,
atom
.
size
);
avio_read
(
pb
,
target
,
str_size
);
target
[
str_size
]
=
0
;
}
atom
.
size
-=
skip_size
;
// If we didn't read the full data chunk for the sub-atom, skip to the end of it.
if
(
skip_size
>
str_size
)
avio_skip
(
pb
,
skip_size
-
str_size
);
}
if
(
*
key
&&
*
data
)
{
if
(
strcmp
(
key
,
"iTunSMPB"
)
==
0
)
{
int
priming
,
remainder
,
samples
;
if
(
sscanf
(
data
,
"%*X %X %X %X"
,
&
priming
,
&
remainder
,
&
samples
)
==
3
){
if
(
priming
>
0
&&
priming
<
16384
)
sc
->
start_pad
=
priming
;
return
1
;
}
}
if
(
strcmp
(
key
,
"cdec"
)
==
0
)
{
// av_dict_set(&st->metadata, key, data, 0);
return
1
;
}
}
return
0
;
}
static
const
uint32_t
mac_to_unicode
[
128
]
=
{
0x00C4
,
0x00C5
,
0x00C7
,
0x00C9
,
0x00D1
,
0x00D6
,
0x00DC
,
0x00E1
,
0x00E0
,
0x00E2
,
0x00E4
,
0x00E3
,
0x00E5
,
0x00E7
,
0x00E9
,
0x00E8
,
...
...
@@ -300,9 +232,6 @@ static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
uint32_t
data_type
=
0
,
str_size
;
int
(
*
parse
)(
MOVContext
*
,
AVIOContext
*
,
unsigned
,
const
char
*
)
=
NULL
;
if
(
c
->
itunes_metadata
&&
atom
.
type
==
MKTAG
(
'-'
,
'-'
,
'-'
,
'-'
))
return
mov_read_custom_metadata
(
c
,
pb
,
atom
);
switch
(
atom
.
type
)
{
case
MKTAG
(
0xa9
,
'n'
,
'a'
,
'm'
):
key
=
"title"
;
break
;
case
MKTAG
(
0xa9
,
'a'
,
'u'
,
't'
):
...
...
@@ -2509,11 +2438,18 @@ static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return
ret
;
}
static
int
mov_read_
replaygain
(
MOVContext
*
c
,
AVIOContext
*
pb
,
int
size
)
static
int
mov_read_
custom_2plus
(
MOVContext
*
c
,
AVIOContext
*
pb
,
int
size
)
{
int64_t
end
=
avio_tell
(
pb
)
+
size
;
uint8_t
*
key
=
NULL
,
*
val
=
NULL
;
int
i
;
AVStream
*
st
;
MOVStreamContext
*
sc
;
if
(
c
->
fc
->
nb_streams
<
1
)
return
0
;
st
=
c
->
fc
->
streams
[
c
->
fc
->
nb_streams
-
1
];
sc
=
st
->
priv_data
;
for
(
i
=
0
;
i
<
2
;
i
++
)
{
uint8_t
**
p
;
...
...
@@ -2547,9 +2483,18 @@ static int mov_read_replaygain(MOVContext *c, AVIOContext *pb, int size)
}
if
(
key
&&
val
)
{
av_dict_set
(
&
c
->
fc
->
metadata
,
key
,
val
,
AV_DICT_DONT_STRDUP_KEY
|
AV_DICT_DONT_STRDUP_VAL
);
key
=
val
=
NULL
;
if
(
strcmp
(
key
,
"iTunSMPB"
)
==
0
)
{
int
priming
,
remainder
,
samples
;
if
(
sscanf
(
val
,
"%*X %X %X %X"
,
&
priming
,
&
remainder
,
&
samples
)
==
3
){
if
(
priming
>
0
&&
priming
<
16384
)
sc
->
start_pad
=
priming
;
}
}
else
if
(
strcmp
(
key
,
"cdec"
)
==
0
)
{
}
else
{
av_dict_set
(
&
c
->
fc
->
metadata
,
key
,
val
,
AV_DICT_DONT_STRDUP_KEY
|
AV_DICT_DONT_STRDUP_VAL
);
key
=
val
=
NULL
;
}
}
avio_seek
(
pb
,
end
,
SEEK_SET
);
...
...
@@ -2581,8 +2526,7 @@ static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom)
domain_len
=
avio_get_str
(
pb
,
len
,
domain
,
sizeof
(
domain
));
avio_skip
(
pb
,
len
-
domain_len
);
if
(
!
strcmp
(
domain
,
"org.hydrogenaudio.replaygain"
))
return
mov_read_replaygain
(
c
,
pb
,
end
-
avio_tell
(
pb
));
return
mov_read_custom_2plus
(
c
,
pb
,
end
-
avio_tell
(
pb
));
}
fail:
...
...
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