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submodule
ffmpeg
Commits
fdf18e33
Commit
fdf18e33
authored
May 31, 2011
by
Mans Rullgard
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mpegaudiodec: remove unusued code and variables
Signed-off-by:
Mans Rullgard
<
mans@mansr.com
>
parent
c1691948
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1 changed file
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4 additions
and
26 deletions
+4
-26
mpegaudiodec.c
libavcodec/mpegaudiodec.c
+4
-26
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libavcodec/mpegaudiodec.c
View file @
fdf18e33
...
...
@@ -269,27 +269,6 @@ static inline int l3_unscale(int value, int exponent)
return
m
;
}
/* all integer n^(4/3) computation code */
#define DEV_ORDER 13
#define POW_FRAC_BITS 24
#define POW_FRAC_ONE (1 << POW_FRAC_BITS)
#define POW_FIX(a) ((int)((a) * POW_FRAC_ONE))
#define POW_MULL(a,b) (((int64_t)(a) * (int64_t)(b)) >> POW_FRAC_BITS)
static
int
dev_4_3_coefs
[
DEV_ORDER
];
static
av_cold
void
int_pow_init
(
void
)
{
int
i
,
a
;
a
=
POW_FIX
(
1
.
0
);
for
(
i
=
0
;
i
<
DEV_ORDER
;
i
++
)
{
a
=
POW_MULL
(
a
,
POW_FIX
(
4
.
0
/
3
.
0
)
-
i
*
POW_FIX
(
1
.
0
))
/
(
i
+
1
);
dev_4_3_coefs
[
i
]
=
a
;
}
}
static
av_cold
int
decode_init
(
AVCodecContext
*
avctx
)
{
MPADecodeContext
*
s
=
avctx
->
priv_data
;
...
...
@@ -385,7 +364,6 @@ static av_cold int decode_init(AVCodecContext * avctx)
/* compute n ^ (4/3) and store it in mantissa/exp format */
int_pow_init
();
mpegaudio_tableinit
();
for
(
i
=
0
;
i
<
4
;
i
++
)
...
...
@@ -1476,7 +1454,7 @@ static void compute_imdct(MPADecodeContext *s,
/* main layer3 decoding function */
static
int
mp_decode_layer3
(
MPADecodeContext
*
s
)
{
int
nb_granules
,
main_data_begin
,
private_bits
;
int
nb_granules
,
main_data_begin
;
int
gr
,
ch
,
blocksplit_flag
,
i
,
j
,
k
,
n
,
bits_pos
;
GranuleDef
*
g
;
int16_t
exponents
[
576
];
//FIXME try INTFLOAT
...
...
@@ -1484,14 +1462,14 @@ static int mp_decode_layer3(MPADecodeContext *s)
/* read side info */
if
(
s
->
lsf
)
{
main_data_begin
=
get_bits
(
&
s
->
gb
,
8
);
private_bits
=
get
_bits
(
&
s
->
gb
,
s
->
nb_channels
);
skip
_bits
(
&
s
->
gb
,
s
->
nb_channels
);
nb_granules
=
1
;
}
else
{
main_data_begin
=
get_bits
(
&
s
->
gb
,
9
);
if
(
s
->
nb_channels
==
2
)
private_bits
=
get
_bits
(
&
s
->
gb
,
3
);
skip
_bits
(
&
s
->
gb
,
3
);
else
private_bits
=
get
_bits
(
&
s
->
gb
,
5
);
skip
_bits
(
&
s
->
gb
,
5
);
nb_granules
=
2
;
for
(
ch
=
0
;
ch
<
s
->
nb_channels
;
ch
++
)
{
s
->
granules
[
ch
][
0
].
scfsi
=
0
;
/* all scale factors are transmitted */
...
...
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