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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-11-19 14:17:26 +0100 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2014-01-21 17:55:07 +0100 |
| commit | 9047491f8bcd87673eed55fb310647a03b0981e9 (patch) | |
| tree | af4ace89201f109c49f6110b05de1df2c7747c33 /libswscale | |
| parent | eb01a25fe1452740a7f3ae2cbaff356a5c6e7806 (diff) | |
| download | ffmpeg-9047491f8bcd87673eed55fb310647a03b0981e9.tar.gz | |
swscale: add nv12/nv21->yuv420 converter
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Diffstat (limited to 'libswscale')
| -rw-r--r-- | libswscale/rgb2rgb.c | 3 | ||||
| -rw-r--r-- | libswscale/rgb2rgb.h | 4 | ||||
| -rw-r--r-- | libswscale/rgb2rgb_template.c | 19 | ||||
| -rw-r--r-- | libswscale/swscale_unscaled.c | 26 |
4 files changed, 52 insertions, 0 deletions
diff --git a/libswscale/rgb2rgb.c b/libswscale/rgb2rgb.c index 21adfe11d2..3fb3921740 100644 --- a/libswscale/rgb2rgb.c +++ b/libswscale/rgb2rgb.c @@ -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, diff --git a/libswscale/rgb2rgb.h b/libswscale/rgb2rgb.h index 79c378da75..f47b04ef0d 100644 --- a/libswscale/rgb2rgb.h +++ b/libswscale/rgb2rgb.h @@ -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, diff --git a/libswscale/rgb2rgb_template.c b/libswscale/rgb2rgb_template.c index 3da2b0b2aa..65ea5dda8c 100644 --- a/libswscale/rgb2rgb_template.c +++ b/libswscale/rgb2rgb_template.c @@ -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; diff --git a/libswscale/swscale_unscaled.c b/libswscale/swscale_unscaled.c index 8c207b1476..61f0d4705d 100644 --- a/libswscale/swscale_unscaled.c +++ b/libswscale/swscale_unscaled.c @@ -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) && |