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Linshizhi
ffmpeg.wasm-core
Commits
a85ab8ad
Commit
a85ab8ad
authored
Dec 19, 2011
by
Justin Ruggles
Browse files
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Plain Diff
adxenc: cosmetics: pretty-printing
parent
25edfc88
Show whitespace changes
Inline
Side-by-side
Showing
1 changed file
with
46 additions
and
41 deletions
+46
-41
adxenc.c
libavcodec/adxenc.c
+46
-41
No files found.
libavcodec/adxenc.c
View file @
a85ab8ad
...
...
@@ -39,40 +39,45 @@ static void adx_encode(ADXContext *c, uint8_t *adx, const int16_t *wav,
PutBitContext
pb
;
int
scale
;
int
i
;
int
s0
,
s1
,
s2
,
d
;
int
max
=
0
;
int
min
=
0
;
int
s0
,
s1
,
s2
,
d
;
int
max
=
0
;
int
min
=
0
;
int
data
[
32
];
s1
=
prev
->
s1
;
s2
=
prev
->
s2
;
for
(
i
=
0
;
i
<
32
;
i
++
)
{
for
(
i
=
0
;
i
<
32
;
i
++
)
{
s0
=
wav
[
i
];
d
=
((
s0
<<
COEFF_BITS
)
-
c
->
coeff
[
0
]
*
s1
-
c
->
coeff
[
1
]
*
s2
)
>>
COEFF_BITS
;
data
[
i
]
=
d
;
if
(
max
<
d
)
max
=
d
;
if
(
min
>
d
)
min
=
d
;
data
[
i
]
=
d
;
if
(
max
<
d
)
max
=
d
;
if
(
min
>
d
)
min
=
d
;
s2
=
s1
;
s1
=
s0
;
}
prev
->
s1
=
s1
;
prev
->
s2
=
s2
;
if
(
max
==
0
&&
min
==
0
)
{
memset
(
adx
,
0
,
18
);
if
(
max
==
0
&&
min
==
0
)
{
memset
(
adx
,
0
,
18
);
return
;
}
if
(
max
/
7
>-
min
/
8
)
scale
=
max
/
7
;
else
scale
=
-
min
/
8
;
if
(
max
/
7
>
-
min
/
8
)
scale
=
max
/
7
;
else
scale
=
-
min
/
8
;
if
(
scale
==
0
)
scale
=
1
;
if
(
scale
==
0
)
scale
=
1
;
AV_WB16
(
adx
,
scale
);
init_put_bits
(
&
pb
,
adx
+
2
,
16
);
for
(
i
=
0
;
i
<
32
;
i
++
)
put_sbits
(
&
pb
,
4
,
av_clip
(
data
[
i
]
/
scale
,
-
8
,
7
));
put_sbits
(
&
pb
,
4
,
av_clip
(
data
[
i
]
/
scale
,
-
8
,
7
));
flush_put_bits
(
&
pb
);
}
...
...
@@ -80,16 +85,16 @@ static int adx_encode_header(AVCodecContext *avctx, uint8_t *buf, int bufsize)
{
ADXContext
*
c
=
avctx
->
priv_data
;
AV_WB32
(
buf
+
0x00
,
0x80000000
|
0x20
);
AV_WB32
(
buf
+
0x04
,
0x03120400
|
avctx
->
channels
);
AV_WB32
(
buf
+
0x08
,
avctx
->
sample_rate
);
AV_WB32
(
buf
+
0x0c
,
0
);
AV_WB32
(
buf
+
0x00
,
0x80000000
|
0x20
);
AV_WB32
(
buf
+
0x04
,
0x03120400
|
avctx
->
channels
);
AV_WB32
(
buf
+
0x08
,
avctx
->
sample_rate
);
AV_WB32
(
buf
+
0x0c
,
0
);
AV_WB16
(
buf
+
0x10
,
c
->
cutoff
);
AV_WB32
(
buf
+
0x12
,
0x03000000
);
AV_WB32
(
buf
+
0x16
,
0x00000000
);
AV_WB32
(
buf
+
0x1a
,
0x00000000
);
memcpy
(
buf
+
0x1e
,
"(c)CRI"
,
6
);
return
0x20
+
4
;
return
0x20
+
4
;
}
static
av_cold
int
adx_encode_init
(
AVCodecContext
*
avctx
)
...
...
@@ -100,8 +105,8 @@ static av_cold int adx_encode_init(AVCodecContext *avctx)
return
-
1
;
avctx
->
frame_size
=
32
;
avctx
->
coded_frame
=
avcodec_alloc_frame
();
avctx
->
coded_frame
->
key_frame
=
1
;
avctx
->
coded_frame
=
avcodec_alloc_frame
();
avctx
->
coded_frame
->
key_frame
=
1
;
/* the cutoff can be adjusted, but this seems to work pretty well */
c
->
cutoff
=
500
;
...
...
@@ -113,12 +118,11 @@ static av_cold int adx_encode_init(AVCodecContext *avctx)
static
av_cold
int
adx_encode_close
(
AVCodecContext
*
avctx
)
{
av_freep
(
&
avctx
->
coded_frame
);
return
0
;
}
static
int
adx_encode_frame
(
AVCodecContext
*
avctx
,
uint8_t
*
frame
,
int
buf_size
,
void
*
data
)
static
int
adx_encode_frame
(
AVCodecContext
*
avctx
,
uint8_t
*
frame
,
int
buf_size
,
void
*
data
)
{
ADXContext
*
c
=
avctx
->
priv_data
;
const
int16_t
*
samples
=
data
;
...
...
@@ -126,36 +130,36 @@ static int adx_encode_frame(AVCodecContext *avctx,
int
rest
=
avctx
->
frame_size
;
if
(
!
c
->
header_parsed
)
{
int
hdrsize
=
adx_encode_header
(
avctx
,
dst
,
buf_size
);
dst
+=
hdrsize
;
int
hdrsize
=
adx_encode_header
(
avctx
,
dst
,
buf_size
);
dst
+=
hdrsize
;
c
->
header_parsed
=
1
;
}
if
(
avctx
->
channels
==
1
)
{
while
(
rest
>=
32
)
{
if
(
avctx
->
channels
==
1
)
{
while
(
rest
>=
32
)
{
adx_encode
(
c
,
dst
,
samples
,
c
->
prev
);
dst
+=
18
;
samples
+=
32
;
rest
-=
32
;
dst
+=
18
;
samples
+=
32
;
rest
-=
32
;
}
}
else
{
while
(
rest
>=
32
*
2
)
{
while
(
rest
>=
32
*
2
)
{
int16_t
tmpbuf
[
32
*
2
];
int
i
;
for
(
i
=
0
;
i
<
32
;
i
++
)
{
tmpbuf
[
i
]
=
samples
[
i
*
2
];
for
(
i
=
0
;
i
<
32
;
i
++
)
{
tmpbuf
[
i
]
=
samples
[
i
*
2
];
tmpbuf
[
i
+
32
]
=
samples
[
i
*
2
+
1
];
}
adx_encode
(
c
,
dst
,
tmpbuf
,
c
->
prev
);
adx_encode
(
c
,
dst
,
tmpbuf
,
c
->
prev
);
adx_encode
(
c
,
dst
+
18
,
tmpbuf
+
32
,
c
->
prev
+
1
);
dst
+=
18
*
2
;
samples
+=
32
*
2
;
rest
-=
32
*
2
;
dst
+=
18
*
2
;
samples
+=
32
*
2
;
rest
-=
32
*
2
;
}
}
return
dst
-
frame
;
return
dst
-
frame
;
}
AVCodec
ff_adpcm_adx_encoder
=
{
...
...
@@ -166,6 +170,7 @@ AVCodec ff_adpcm_adx_encoder = {
.
init
=
adx_encode_init
,
.
encode
=
adx_encode_frame
,
.
close
=
adx_encode_close
,
.
sample_fmts
=
(
const
enum
AVSampleFormat
[]){
AV_SAMPLE_FMT_S16
,
AV_SAMPLE_FMT_NONE
},
.
sample_fmts
=
(
const
enum
AVSampleFormat
[])
{
AV_SAMPLE_FMT_S16
,
AV_SAMPLE_FMT_NONE
},
.
long_name
=
NULL_IF_CONFIG_SMALL
(
"SEGA CRI ADX ADPCM"
),
};
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