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Linshizhi
ffmpeg.wasm-core
Commits
9047491f
Commit
9047491f
authored
Nov 19, 2013
by
Michael Niedermayer
Committed by
Anton Khirnov
Jan 21, 2014
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swscale: add nv12/nv21->yuv420 converter
Signed-off-by:
Anton Khirnov
<
anton@khirnov.net
>
parent
eb01a25f
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4 changed files
with
52 additions
and
0 deletions
+52
-0
rgb2rgb.c
libswscale/rgb2rgb.c
+3
-0
rgb2rgb.h
libswscale/rgb2rgb.h
+4
-0
rgb2rgb_template.c
libswscale/rgb2rgb_template.c
+19
-0
swscale_unscaled.c
libswscale/swscale_unscaled.c
+26
-0
No files found.
libswscale/rgb2rgb.c
View file @
9047491f
...
...
@@ -82,6 +82,9 @@ void (*planar2x)(const uint8_t *src, uint8_t *dst, int width, int height,
void
(
*
interleaveBytes
)(
const
uint8_t
*
src1
,
const
uint8_t
*
src2
,
uint8_t
*
dst
,
int
width
,
int
height
,
int
src1Stride
,
int
src2Stride
,
int
dstStride
);
void
(
*
deinterleaveBytes
)(
const
uint8_t
*
src
,
uint8_t
*
dst1
,
uint8_t
*
dst2
,
int
width
,
int
height
,
int
srcStride
,
int
dst1Stride
,
int
dst2Stride
);
void
(
*
vu9_to_vu12
)(
const
uint8_t
*
src1
,
const
uint8_t
*
src2
,
uint8_t
*
dst1
,
uint8_t
*
dst2
,
int
width
,
int
height
,
...
...
libswscale/rgb2rgb.h
View file @
9047491f
...
...
@@ -129,6 +129,10 @@ extern void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t
int
width
,
int
height
,
int
src1Stride
,
int
src2Stride
,
int
dstStride
);
extern
void
(
*
deinterleaveBytes
)(
const
uint8_t
*
src
,
uint8_t
*
dst1
,
uint8_t
*
dst2
,
int
width
,
int
height
,
int
srcStride
,
int
dst1Stride
,
int
dst2Stride
);
extern
void
(
*
vu9_to_vu12
)(
const
uint8_t
*
src1
,
const
uint8_t
*
src2
,
uint8_t
*
dst1
,
uint8_t
*
dst2
,
int
width
,
int
height
,
...
...
libswscale/rgb2rgb_template.c
View file @
9047491f
...
...
@@ -708,6 +708,24 @@ static void interleaveBytes_c(const uint8_t *src1, const uint8_t *src2,
}
}
static
void
deinterleaveBytes_c
(
const
uint8_t
*
src
,
uint8_t
*
dst1
,
uint8_t
*
dst2
,
int
width
,
int
height
,
int
srcStride
,
int
dst1Stride
,
int
dst2Stride
)
{
int
h
;
for
(
h
=
0
;
h
<
height
;
h
++
)
{
int
w
;
for
(
w
=
0
;
w
<
width
;
w
++
)
{
dst1
[
w
]
=
src
[
2
*
w
+
0
];
dst2
[
w
]
=
src
[
2
*
w
+
1
];
}
src
+=
srcStride
;
dst1
+=
dst1Stride
;
dst2
+=
dst2Stride
;
}
}
static
inline
void
vu9_to_vu12_c
(
const
uint8_t
*
src1
,
const
uint8_t
*
src2
,
uint8_t
*
dst1
,
uint8_t
*
dst2
,
int
width
,
int
height
,
...
...
@@ -937,6 +955,7 @@ static av_cold void rgb2rgb_init_c(void)
planar2x
=
planar2x_c
;
rgb24toyv12
=
rgb24toyv12_c
;
interleaveBytes
=
interleaveBytes_c
;
deinterleaveBytes
=
deinterleaveBytes_c
;
vu9_to_vu12
=
vu9_to_vu12_c
;
yvu9_to_yuy2
=
yvu9_to_yuy2_c
;
...
...
libswscale/swscale_unscaled.c
View file @
9047491f
...
...
@@ -155,6 +155,27 @@ static int planarToNv12Wrapper(SwsContext *c, const uint8_t *src[],
return
srcSliceH
;
}
static
int
nv12ToPlanarWrapper
(
SwsContext
*
c
,
const
uint8_t
*
src
[],
int
srcStride
[],
int
srcSliceY
,
int
srcSliceH
,
uint8_t
*
dstParam
[],
int
dstStride
[])
{
uint8_t
*
dst1
=
dstParam
[
1
]
+
dstStride
[
1
]
*
srcSliceY
/
2
;
uint8_t
*
dst2
=
dstParam
[
2
]
+
dstStride
[
2
]
*
srcSliceY
/
2
;
copyPlane
(
src
[
0
],
srcStride
[
0
],
srcSliceY
,
srcSliceH
,
c
->
srcW
,
dstParam
[
0
],
dstStride
[
0
]);
if
(
c
->
srcFormat
==
AV_PIX_FMT_NV12
)
deinterleaveBytes
(
src
[
1
],
dst1
,
dst2
,
c
->
srcW
/
2
,
srcSliceH
/
2
,
srcStride
[
1
],
dstStride
[
1
],
dstStride
[
2
]);
else
deinterleaveBytes
(
src
[
1
],
dst2
,
dst1
,
c
->
srcW
/
2
,
srcSliceH
/
2
,
srcStride
[
1
],
dstStride
[
2
],
dstStride
[
1
]);
return
srcSliceH
;
}
static
int
planarToYuy2Wrapper
(
SwsContext
*
c
,
const
uint8_t
*
src
[],
int
srcStride
[],
int
srcSliceY
,
int
srcSliceH
,
uint8_t
*
dstParam
[],
int
dstStride
[])
...
...
@@ -981,6 +1002,11 @@ void ff_get_unscaled_swscale(SwsContext *c)
(
dstFormat
==
AV_PIX_FMT_NV12
||
dstFormat
==
AV_PIX_FMT_NV21
))
{
c
->
swscale
=
planarToNv12Wrapper
;
}
/* nv12_to_yv12 */
if
(
dstFormat
==
AV_PIX_FMT_YUV420P
&&
(
srcFormat
==
AV_PIX_FMT_NV12
||
srcFormat
==
AV_PIX_FMT_NV21
))
{
c
->
swscale
=
nv12ToPlanarWrapper
;
}
/* yuv2bgr */
if
((
srcFormat
==
AV_PIX_FMT_YUV420P
||
srcFormat
==
AV_PIX_FMT_YUV422P
||
srcFormat
==
AV_PIX_FMT_YUVA420P
)
&&
isAnyRGB
(
dstFormat
)
&&
...
...
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