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Linshizhi
ffmpeg.wasm-core
Commits
d0c0bf0d
Commit
d0c0bf0d
authored
Jul 09, 2012
by
Justin Ruggles
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alac: cosmetics: reindent after last commit
parent
79def4c5
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alac.c
libavcodec/alac.c
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libavcodec/alac.c
View file @
d0c0bf0d
...
...
@@ -199,71 +199,71 @@ static void predictor_decompress_fir_adapt(int32_t *error_buffer,
}
/* read warm-up samples */
for
(
i
=
0
;
i
<
predictor_coef_num
;
i
++
)
{
int32_t
val
;
for
(
i
=
0
;
i
<
predictor_coef_num
;
i
++
)
{
int32_t
val
;
val
=
buffer_out
[
i
]
+
error_buffer
[
i
+
1
];
val
=
sign_extend
(
val
,
readsamplesize
);
buffer_out
[
i
+
1
]
=
val
;
}
val
=
buffer_out
[
i
]
+
error_buffer
[
i
+
1
];
val
=
sign_extend
(
val
,
readsamplesize
);
buffer_out
[
i
+
1
]
=
val
;
}
/* NOTE: 4 and 8 are very common cases that could be optimized. */
/* general case */
for
(
i
=
predictor_coef_num
+
1
;
i
<
output_size
;
i
++
)
{
int
j
;
int
sum
=
0
;
int
outval
;
int
error_val
=
error_buffer
[
i
];
for
(
j
=
0
;
j
<
predictor_coef_num
;
j
++
)
{
sum
+=
(
buffer_out
[
predictor_coef_num
-
j
]
-
buffer_out
[
0
])
*
predictor_coef_table
[
j
];
}
for
(
i
=
predictor_coef_num
+
1
;
i
<
output_size
;
i
++
)
{
int
j
;
int
sum
=
0
;
int
outval
;
int
error_val
=
error_buffer
[
i
];
for
(
j
=
0
;
j
<
predictor_coef_num
;
j
++
)
{
sum
+=
(
buffer_out
[
predictor_coef_num
-
j
]
-
buffer_out
[
0
])
*
predictor_coef_table
[
j
];
}
outval
=
(
1
<<
(
predictor_quantitization
-
1
))
+
sum
;
outval
=
outval
>>
predictor_quantitization
;
outval
=
outval
+
buffer_out
[
0
]
+
error_val
;
outval
=
sign_extend
(
outval
,
readsamplesize
);
outval
=
(
1
<<
(
predictor_quantitization
-
1
))
+
sum
;
outval
=
outval
>>
predictor_quantitization
;
outval
=
outval
+
buffer_out
[
0
]
+
error_val
;
outval
=
sign_extend
(
outval
,
readsamplesize
);
buffer_out
[
predictor_coef_num
+
1
]
=
outval
;
buffer_out
[
predictor_coef_num
+
1
]
=
outval
;
if
(
error_val
>
0
)
{
int
predictor_num
=
predictor_coef_num
-
1
;
if
(
error_val
>
0
)
{
int
predictor_num
=
predictor_coef_num
-
1
;
while
(
predictor_num
>=
0
&&
error_val
>
0
)
{
int
val
=
buffer_out
[
0
]
-
buffer_out
[
predictor_coef_num
-
predictor_num
];
int
sign
=
sign_only
(
val
);
while
(
predictor_num
>=
0
&&
error_val
>
0
)
{
int
val
=
buffer_out
[
0
]
-
buffer_out
[
predictor_coef_num
-
predictor_num
];
int
sign
=
sign_only
(
val
);
predictor_coef_table
[
predictor_num
]
-=
sign
;
predictor_coef_table
[
predictor_num
]
-=
sign
;
val
*=
sign
;
/* absolute value */
val
*=
sign
;
/* absolute value */
error_val
-=
((
val
>>
predictor_quantitization
)
*
(
predictor_coef_num
-
predictor_num
));
error_val
-=
((
val
>>
predictor_quantitization
)
*
(
predictor_coef_num
-
predictor_num
));
predictor_num
--
;
}
}
else
if
(
error_val
<
0
)
{
int
predictor_num
=
predictor_coef_num
-
1
;
predictor_num
--
;
}
}
else
if
(
error_val
<
0
)
{
int
predictor_num
=
predictor_coef_num
-
1
;
while
(
predictor_num
>=
0
&&
error_val
<
0
)
{
int
val
=
buffer_out
[
0
]
-
buffer_out
[
predictor_coef_num
-
predictor_num
];
int
sign
=
-
sign_only
(
val
);
while
(
predictor_num
>=
0
&&
error_val
<
0
)
{
int
val
=
buffer_out
[
0
]
-
buffer_out
[
predictor_coef_num
-
predictor_num
];
int
sign
=
-
sign_only
(
val
);
predictor_coef_table
[
predictor_num
]
-=
sign
;
predictor_coef_table
[
predictor_num
]
-=
sign
;
val
*=
sign
;
/* neg value */
val
*=
sign
;
/* neg value */
error_val
-=
((
val
>>
predictor_quantitization
)
*
(
predictor_coef_num
-
predictor_num
));
error_val
-=
((
val
>>
predictor_quantitization
)
*
(
predictor_coef_num
-
predictor_num
));
predictor_num
--
;
}
predictor_num
--
;
}
buffer_out
++
;
}
buffer_out
++
;
}
}
static
void
decorrelate_stereo
(
int32_t
*
buffer
[
MAX_CHANNELS
],
...
...
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