diff options
| author | Mark Reid <mindmark@gmail.com> | 2020-09-28 20:44:34 -0700 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-02 14:59:52 +0200 |
| commit | 453004fde6fdfeb5506947d253ec768dae1115b8 (patch) | |
| tree | 2161982bd3f34c4cc4ef5a06101fc18a41608b6c /libswscale/input.c | |
| parent | 6bf57c6a2a30f80f6182408c9605e11a109b0486 (diff) | |
libswcale/input: use more accurate rgbf32 yuv conversions
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libswscale/input.c')
| -rw-r--r-- | libswscale/input.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/libswscale/input.c b/libswscale/input.c index 064ed5902f..67a85b0418 100644 --- a/libswscale/input.c +++ b/libswscale/input.c @@ -984,15 +984,14 @@ static av_always_inline void planar_rgbf32_to_uv(uint8_t *_dstU, uint8_t *_dstV, uint16_t *dstV = (uint16_t *)_dstV; int32_t ru = rgb2yuv[RU_IDX], gu = rgb2yuv[GU_IDX], bu = rgb2yuv[BU_IDX]; int32_t rv = rgb2yuv[RV_IDX], gv = rgb2yuv[GV_IDX], bv = rgb2yuv[BV_IDX]; - int bpc = 16; - int shift = 14; + for (i = 0; i < width; i++) { int g = av_clip_uint16(lrintf(65535.0f * rdpx(src[0] + i))); int b = av_clip_uint16(lrintf(65535.0f * rdpx(src[1] + i))); int r = av_clip_uint16(lrintf(65535.0f * rdpx(src[2] + i))); - dstU[i] = (ru*r + gu*g + bu*b + (257 << (RGB2YUV_SHIFT + bpc - 9))) >> (RGB2YUV_SHIFT + shift - 14); - dstV[i] = (rv*r + gv*g + bv*b + (257 << (RGB2YUV_SHIFT + bpc - 9))) >> (RGB2YUV_SHIFT + shift - 14); + dstU[i] = (ru*r + gu*g + bu*b + (0x10001 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT; + dstV[i] = (rv*r + gv*g + bv*b + (0x10001 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT; } } @@ -1003,14 +1002,13 @@ static av_always_inline void planar_rgbf32_to_y(uint8_t *_dst, const uint8_t *_s uint16_t *dst = (uint16_t *)_dst; int32_t ry = rgb2yuv[RY_IDX], gy = rgb2yuv[GY_IDX], by = rgb2yuv[BY_IDX]; - int bpc = 16; - int shift = 14; + for (i = 0; i < width; i++) { int g = av_clip_uint16(lrintf(65535.0f * rdpx(src[0] + i))); int b = av_clip_uint16(lrintf(65535.0f * rdpx(src[1] + i))); int r = av_clip_uint16(lrintf(65535.0f * rdpx(src[2] + i))); - dst[i] = ((ry*r + gy*g + by*b + (33 << (RGB2YUV_SHIFT + bpc - 9))) >> (RGB2YUV_SHIFT + shift - 14)); + dst[i] = (ry*r + gy*g + by*b + (0x2001 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT; } } |