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Linshizhi
ffmpeg.wasm-core
Commits
1f655c4f
Commit
1f655c4f
authored
Apr 17, 2008
by
Michael Niedermayer
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indent
Originally committed as revision 12875 to
svn://svn.ffmpeg.org/ffmpeg/trunk
parent
5eeba07e
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1 changed file
with
19 additions
and
19 deletions
+19
-19
alac.c
libavcodec/alac.c
+19
-19
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libavcodec/alac.c
View file @
1f655c4f
...
...
@@ -154,21 +154,21 @@ static inline int decode_scalar(GetBitContext *gb, int k, int limit, int readsam
/* use alternative encoding */
x
=
get_bits
(
gb
,
readsamplesize
);
}
else
{
if
(
k
>=
limit
)
k
=
limit
;
if
(
k
>=
limit
)
k
=
limit
;
if
(
k
!=
1
)
{
int
extrabits
=
show_bits
(
gb
,
k
);
if
(
k
!=
1
)
{
int
extrabits
=
show_bits
(
gb
,
k
);
/* multiply x by 2^k - 1, as part of their strange algorithm */
x
=
(
x
<<
k
)
-
x
;
/* multiply x by 2^k - 1, as part of their strange algorithm */
x
=
(
x
<<
k
)
-
x
;
if
(
extrabits
>
1
)
{
x
+=
extrabits
-
1
;
skip_bits
(
gb
,
k
);
}
else
skip_bits
(
gb
,
k
-
1
);
}
if
(
extrabits
>
1
)
{
x
+=
extrabits
-
1
;
skip_bits
(
gb
,
k
);
}
else
skip_bits
(
gb
,
k
-
1
);
}
}
return
x
;
}
...
...
@@ -192,12 +192,12 @@ static void bastardized_rice_decompress(ALACContext *alac,
int32_t
x_modified
;
int32_t
final_val
;
/* standard rice encoding */
int
k
;
/* size of extra bits */
/* standard rice encoding */
int
k
;
/* size of extra bits */
/* read k, that is bits as is */
k
=
31
-
count_leading_zeros
((
history
>>
9
)
+
3
);
x
=
decode_scalar
(
&
alac
->
gb
,
k
,
rice_kmodifier
,
readsamplesize
);
/* read k, that is bits as is */
k
=
31
-
count_leading_zeros
((
history
>>
9
)
+
3
);
x
=
decode_scalar
(
&
alac
->
gb
,
k
,
rice_kmodifier
,
readsamplesize
);
x_modified
=
sign_modifier
+
x
;
final_val
=
(
x_modified
+
1
)
/
2
;
...
...
@@ -220,9 +220,9 @@ static void bastardized_rice_decompress(ALACContext *alac,
sign_modifier
=
1
;
k
=
count_leading_zeros
(
history
)
+
((
history
+
16
)
>>
6
/* / 64 */
)
-
24
;
k
=
count_leading_zeros
(
history
)
+
((
history
+
16
)
>>
6
/* / 64 */
)
-
24
;
block_size
=
decode_scalar
(
&
alac
->
gb
,
k
,
rice_kmodifier
,
16
);
block_size
=
decode_scalar
(
&
alac
->
gb
,
k
,
rice_kmodifier
,
16
);
if
(
block_size
>
0
)
{
memset
(
&
output_buffer
[
output_count
+
1
],
0
,
block_size
*
4
);
...
...
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