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Linshizhi
ffmpeg.wasm-core
Commits
907892ee
Commit
907892ee
authored
Jun 01, 2008
by
Vitor Sessak
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Rename functions
Originally committed as revision 13597 to
svn://svn.ffmpeg.org/ffmpeg/trunk
parent
d981252c
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1 changed file
with
6 additions
and
6 deletions
+6
-6
ra144.c
libavcodec/ra144.c
+6
-6
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libavcodec/ra144.c
View file @
907892ee
...
...
@@ -73,9 +73,9 @@ static int t_sqrt(unsigned int x)
/**
* Evaluate the LPC filter coefficients from the reflection coefficients.
* Does the inverse of the e
q
() function.
* Does the inverse of the e
val_refl
() function.
*/
static
void
do_voice
(
const
int
*
refl
,
int
*
coefs
)
static
void
eval_coefs
(
const
int
*
refl
,
int
*
coefs
)
{
int
buffer
[
10
];
int
*
b1
=
buffer
;
...
...
@@ -251,12 +251,12 @@ static int dec1(int16_t *decsp, const int *data, const int *inp, int f)
/**
* Evaluate the reflection coefficients from the filter coefficients.
* Does the inverse of the
do_voice
() function.
* Does the inverse of the
eval_coefs
() function.
*
* @return 1 if one of the reflection coefficients is of magnitude greater than
* 4095, 0 if not.
*/
static
int
e
q
(
const
int16_t
*
coefs
,
int
*
refl
)
static
int
e
val_refl
(
const
int16_t
*
coefs
,
int
*
refl
)
{
int
retval
=
0
;
int
b
,
c
,
i
;
...
...
@@ -312,7 +312,7 @@ static int dec2(RA144Context *ractx, int16_t *decsp, int block_num,
for
(
x
=
0
;
x
<
30
;
x
++
)
decsp
[
x
]
=
(
a
*
ractx
->
lpc_coef
[
x
]
+
b
*
ractx
->
lpc_coef_old
[
x
])
>>
2
;
if
(
e
q
(
decsp
,
work
))
{
if
(
e
val_refl
(
decsp
,
work
))
{
// The interpolated coefficients are unstable, copy either new or old
// coefficients
if
(
copynew
)
...
...
@@ -350,7 +350,7 @@ static int ra144_decode_frame(AVCodecContext * avctx,
// "<< 1"? Doesn't this make one value out of two of the table useless?
ractx
->
lpc_refl
[
i
]
=
decodetable
[
i
][
get_bits
(
&
gb
,
sizes
[
i
])
<<
1
];
do_voice
(
ractx
->
lpc_refl
,
ractx
->
lpc_coef
);
eval_coefs
(
ractx
->
lpc_refl
,
ractx
->
lpc_coef
);
energy
=
decodeval
[
get_bits
(
&
gb
,
5
)
<<
1
];
// Useless table entries?
...
...
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