144 lines
5.8 KiB
C
144 lines
5.8 KiB
C
// Copyright 2016 Adrien Descamps
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// Distributed under BSD 3-Clause License
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// Provide optimized functions to convert images from 8bits yuv420 to rgb24 format
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// There are a few slightly different variations of the YCbCr color space with different parameters that
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// change the conversion matrix.
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// The three most common YCbCr color space, defined by BT.601, BT.709 and JPEG standard are implemented here.
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// See the respective standards for details
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// The matrix values used are derived from http://www.equasys.de/colorconversion.html
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// YUV420 is stored as three separate channels, with U and V (Cb and Cr) subsampled by a 2 factor
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// For conversion from yuv to rgb, no interpolation is done, and the same UV value are used for 4 rgb pixels. This
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// is suboptimal for image quality, but by far the fastest method.
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// For all methods, width and height should be even, if not, the last row/column of the result image won't be affected.
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// For sse methods, if the width if not divisable by 32, the last (width%32) pixels of each line won't be affected.
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/*#include <stdint.h>*/
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#include "yuv_rgb_common.h"
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// yuv to rgb, standard c implementation
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void yuv420_rgb565_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv420_rgb24_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv420_rgba_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv420_bgra_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv420_argb_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv420_abgr_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv422_rgb565_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv422_rgb24_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv422_rgba_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv422_bgra_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv422_argb_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuv422_abgr_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuvnv12_rgb565_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuvnv12_rgb24_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuvnv12_rgba_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuvnv12_bgra_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuvnv12_argb_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuvnv12_abgr_std(
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uint32_t width, uint32_t height,
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const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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void yuvp010_xbgr2101010_std(
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uint32_t width, uint32_t height,
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const uint16_t *y, const uint16_t *u, const uint16_t *v, uint32_t y_stride, uint32_t uv_stride,
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uint8_t *rgb, uint32_t rgb_stride,
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YCbCrType yuv_type);
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// rgb to yuv, standard c implementation
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void rgb24_yuv420_std(
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uint32_t width, uint32_t height,
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const uint8_t *rgb, uint32_t rgb_stride,
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uint8_t *y, uint8_t *u, uint8_t *v, uint32_t y_stride, uint32_t uv_stride,
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YCbCrType yuv_type);
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