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Linshizhi
ffmpeg.wasm-core
Commits
19532643
Commit
19532643
authored
Aug 11, 2012
by
Mans Rullgard
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g723.1: drop unnecessary variable buf_ptr in formant_postfilter()
Signed-off-by:
Mans Rullgard
<
mans@mansr.com
>
parent
b2af2c4b
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1 changed file
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7 additions
and
7 deletions
+7
-7
g723_1.c
libavcodec/g723_1.c
+7
-7
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libavcodec/g723_1.c
View file @
19532643
...
...
@@ -926,7 +926,7 @@ static void gain_scale(G723_1_Context *p, int16_t * buf, int energy)
*/
static
void
formant_postfilter
(
G723_1_Context
*
p
,
int16_t
*
lpc
,
int16_t
*
buf
)
{
int16_t
filter_coef
[
2
][
LPC_ORDER
]
,
*
buf_ptr
;
int16_t
filter_coef
[
2
][
LPC_ORDER
];
int
filter_signal
[
LPC_ORDER
+
FRAME_LEN
],
*
signal_ptr
;
int
i
,
j
,
k
;
...
...
@@ -949,7 +949,7 @@ static void formant_postfilter(G723_1_Context *p, int16_t *lpc, int16_t *buf)
memcpy
(
p
->
iir_mem
,
filter_signal
+
FRAME_LEN
,
LPC_ORDER
*
sizeof
(
*
p
->
iir_mem
));
buf
_ptr
=
buf
+
LPC_ORDER
;
buf
+=
LPC_ORDER
;
signal_ptr
=
filter_signal
+
LPC_ORDER
;
for
(
i
=
0
;
i
<
SUBFRAMES
;
i
++
)
{
int16_t
temp_vector
[
SUBFRAME_LEN
];
...
...
@@ -958,7 +958,7 @@ static void formant_postfilter(G723_1_Context *p, int16_t *lpc, int16_t *buf)
int
scale
,
energy
;
/* Normalize */
scale
=
scale_vector
(
temp_vector
,
buf
_ptr
,
SUBFRAME_LEN
);
scale
=
scale_vector
(
temp_vector
,
buf
,
SUBFRAME_LEN
);
/* Compute auto correlation coefficients */
auto_corr
[
0
]
=
dot_product
(
temp_vector
,
temp_vector
+
1
,
...
...
@@ -975,8 +975,8 @@ static void formant_postfilter(G723_1_Context *p, int16_t *lpc, int16_t *buf)
/* Compensation filter */
for
(
j
=
0
;
j
<
SUBFRAME_LEN
;
j
++
)
{
buf
_ptr
[
j
]
=
av_sat_dadd32
(
signal_ptr
[
j
],
(
signal_ptr
[
j
-
1
]
>>
16
)
*
temp
)
>>
16
;
buf
[
j
]
=
av_sat_dadd32
(
signal_ptr
[
j
],
(
signal_ptr
[
j
-
1
]
>>
16
)
*
temp
)
>>
16
;
}
/* Compute normalized signal energy */
...
...
@@ -986,9 +986,9 @@ static void formant_postfilter(G723_1_Context *p, int16_t *lpc, int16_t *buf)
}
else
energy
=
auto_corr
[
1
]
>>
temp
;
gain_scale
(
p
,
buf
_ptr
,
energy
);
gain_scale
(
p
,
buf
,
energy
);
buf
_ptr
+=
SUBFRAME_LEN
;
buf
+=
SUBFRAME_LEN
;
signal_ptr
+=
SUBFRAME_LEN
;
}
}
...
...
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