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| author | Frank Barchard <fbarchard@google.com> | 2021-02-19 08:58:07 -0800 |
|---|---|---|
| committer | Frank Barchard <fbarchard@chromium.org> | 2021-02-19 18:04:48 +0000 |
| commit | 08815a29766a78398a8e2b9ed095280e9d0a73c2 (patch) | |
| tree | cc3a9bea31747415d3252371014b1066708c079b /source/scale.cc | |
| parent | 63dd43dd469c5a21a8fa09d28350961c723326d0 (diff) | |
| download | libyuv-08815a29766a78398a8e2b9ed095280e9d0a73c2.tar.gz | |
Scale 12 functions that are scale 16 but with only low 12 bits valid
Rename yuvconstants to .c and use round from math.h
Bug: libyuv:882, b/180472591
Change-Id: I70720bf3e0833ba00df0d721f12020fba0b07a03
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2706966
Reviewed-by: Mirko Bonadei <mbonadei@chromium.org>
Diffstat (limited to 'source/scale.cc')
| -rw-r--r-- | source/scale.cc | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/source/scale.cc b/source/scale.cc index 5f0ff646..4a5dc94a 100644 --- a/source/scale.cc +++ b/source/scale.cc @@ -2073,6 +2073,43 @@ int I420Scale_16(const uint16_t* src_y, return 0; } +LIBYUV_API +int I420Scale_12(const uint16_t* src_y, + int src_stride_y, + const uint16_t* src_u, + int src_stride_u, + const uint16_t* src_v, + int src_stride_v, + int src_width, + int src_height, + uint16_t* dst_y, + int dst_stride_y, + uint16_t* dst_u, + int dst_stride_u, + uint16_t* dst_v, + int dst_stride_v, + int dst_width, + int dst_height, + enum FilterMode filtering) { + int src_halfwidth = SUBSAMPLE(src_width, 1, 1); + int src_halfheight = SUBSAMPLE(src_height, 1, 1); + int dst_halfwidth = SUBSAMPLE(dst_width, 1, 1); + int dst_halfheight = SUBSAMPLE(dst_height, 1, 1); + if (!src_y || !src_u || !src_v || src_width <= 0 || src_height == 0 || + src_width > 32768 || src_height > 32768 || !dst_y || !dst_u || !dst_v || + dst_width <= 0 || dst_height <= 0) { + return -1; + } + + ScalePlane_12(src_y, src_stride_y, src_width, src_height, dst_y, dst_stride_y, + dst_width, dst_height, filtering); + ScalePlane_12(src_u, src_stride_u, src_halfwidth, src_halfheight, dst_u, + dst_stride_u, dst_halfwidth, dst_halfheight, filtering); + ScalePlane_12(src_v, src_stride_v, src_halfwidth, src_halfheight, dst_v, + dst_stride_v, dst_halfwidth, dst_halfheight, filtering); + return 0; +} + // Scale an I444 image. // This function in turn calls a scaling function for each plane. @@ -2142,6 +2179,39 @@ int I444Scale_16(const uint16_t* src_y, return 0; } +LIBYUV_API +int I444Scale_12(const uint16_t* src_y, + int src_stride_y, + const uint16_t* src_u, + int src_stride_u, + const uint16_t* src_v, + int src_stride_v, + int src_width, + int src_height, + uint16_t* dst_y, + int dst_stride_y, + uint16_t* dst_u, + int dst_stride_u, + uint16_t* dst_v, + int dst_stride_v, + int dst_width, + int dst_height, + enum FilterMode filtering) { + if (!src_y || !src_u || !src_v || src_width <= 0 || src_height == 0 || + src_width > 32768 || src_height > 32768 || !dst_y || !dst_u || !dst_v || + dst_width <= 0 || dst_height <= 0) { + return -1; + } + + ScalePlane_12(src_y, src_stride_y, src_width, src_height, dst_y, dst_stride_y, + dst_width, dst_height, filtering); + ScalePlane_12(src_u, src_stride_u, src_width, src_height, dst_u, dst_stride_u, + dst_width, dst_height, filtering); + ScalePlane_12(src_v, src_stride_v, src_width, src_height, dst_v, dst_stride_v, + dst_width, dst_height, filtering); + return 0; +} + // Scale an NV12 image. // This function in turn calls a scaling function for each plane. |