/src/libwebp/src/dsp/yuv.h

Source (jump to first uncovered line)
// Copyright 2010 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// inline YUV<->RGB conversion function
//
// The exact naming is Y'CbCr, following the ITU-R BT.601 standard.
// More information at: https://en.wikipedia.org/wiki/YCbCr
// Y = 0.2569 * R + 0.5044 * G + 0.0979 * B + 16
// U = -0.1483 * R - 0.2911 * G + 0.4394 * B + 128
// V = 0.4394 * R - 0.3679 * G - 0.0715 * B + 128
// We use 16bit fixed point operations for RGB->YUV conversion (YUV_FIX).
//
// For the Y'CbCr to RGB conversion, the BT.601 specification reads:
//   R = 1.164 * (Y-16) + 1.596 * (V-128)
//   G = 1.164 * (Y-16) - 0.813 * (V-128) - 0.391 * (U-128)
//   B = 1.164 * (Y-16)                   + 2.018 * (U-128)
// where Y is in the [16,235] range, and U/V in the [16,240] range.
//
// The fixed-point implementation used here is:
//  R = (19077 . y             + 26149 . v - 14234) >> 6
//  G = (19077 . y -  6419 . u - 13320 . v +  8708) >> 6
//  B = (19077 . y + 33050 . u             - 17685) >> 6
// where the '.' operator is the mulhi_epu16 variant:
//   a . b = ((a << 8) * b) >> 16
// that preserves 8 bits of fractional precision before final descaling.

// Author: Skal (pascal.massimino@gmail.com)

#ifndef WEBP_DSP_YUV_H_
#define WEBP_DSP_YUV_H_

#include "src/dsp/dsp.h"
#include "src/dec/vp8_dec.h"

//------------------------------------------------------------------------------
// YUV -> RGB conversion

#ifdef __cplusplus
extern "C" {
#endif

enum {
  YUV_FIX = 16,                    // fixed-point precision for RGB->YUV
  YUV_HALF = 1 << (YUV_FIX - 1),

  YUV_FIX2 = 6,                   // fixed-point precision for YUV->RGB
  YUV_MASK2 = (256 << YUV_FIX2) - 1
};

//------------------------------------------------------------------------------
// slower on x86 by ~7-8%, but bit-exact with the SSE2/NEON version

static WEBP_INLINE int MultHi(int v, int coeff) {   // _mm_mulhi_epu16 emulation
  return (v * coeff) >> 8;
}

static WEBP_INLINE int VP8Clip8(int v) {
  return ((v & ~YUV_MASK2) == 0) ? (v >> YUV_FIX2) : (v < 0) ? 0 : 255;
}

static WEBP_INLINE int VP8YUVToR(int y, int v) {
  return VP8Clip8(MultHi(y, 19077) + MultHi(v, 26149) - 14234);
}

static WEBP_INLINE int VP8YUVToG(int y, int u, int v) {
  return VP8Clip8(MultHi(y, 19077) - MultHi(u, 6419) - MultHi(v, 13320) + 8708);
}

static WEBP_INLINE int VP8YUVToB(int y, int u) {
  return VP8Clip8(MultHi(y, 19077) + MultHi(u, 33050) - 17685);
}

static WEBP_INLINE void VP8YuvToRgb(int y, int u, int v,
                                    uint8_t* const rgb) {
  rgb[0] = VP8YUVToR(y, v);
  rgb[1] = VP8YUVToG(y, u, v);
  rgb[2] = VP8YUVToB(y, u);
}

static WEBP_INLINE void VP8YuvToBgr(int y, int u, int v,
                                    uint8_t* const bgr) {
  bgr[0] = VP8YUVToB(y, u);
  bgr[1] = VP8YUVToG(y, u, v);
  bgr[2] = VP8YUVToR(y, v);
}

static WEBP_INLINE void VP8YuvToRgb565(int y, int u, int v,
                                       uint8_t* const rgb) {
  const int r = VP8YUVToR(y, v);      // 5 usable bits
  const int g = VP8YUVToG(y, u, v);   // 6 usable bits
  const int b = VP8YUVToB(y, u);      // 5 usable bits
  const int rg = (r & 0xf8) | (g >> 5);
  const int gb = ((g << 3) & 0xe0) | (b >> 3);
#if (WEBP_SWAP_16BIT_CSP == 1)
  rgb[0] = gb;
  rgb[1] = rg;
#else
  rgb[0] = rg;
  rgb[1] = gb;
#endif
}

static WEBP_INLINE void VP8YuvToRgba4444(int y, int u, int v,
                                         uint8_t* const argb) {
  const int r = VP8YUVToR(y, v);        // 4 usable bits
  const int g = VP8YUVToG(y, u, v);     // 4 usable bits
  const int b = VP8YUVToB(y, u);        // 4 usable bits
  const int rg = (r & 0xf0) | (g >> 4);
  const int ba = (b & 0xf0) | 0x0f;     // overwrite the lower 4 bits
#if (WEBP_SWAP_16BIT_CSP == 1)
  argb[0] = ba;
  argb[1] = rg;
#else
  argb[0] = rg;
  argb[1] = ba;
#endif
}

//-----------------------------------------------------------------------------
// Alpha handling variants

static WEBP_INLINE void VP8YuvToArgb(uint8_t y, uint8_t u, uint8_t v,
                                     uint8_t* const argb) {
  argb[0] = 0xff;
  VP8YuvToRgb(y, u, v, argb + 1);
}

static WEBP_INLINE void VP8YuvToBgra(uint8_t y, uint8_t u, uint8_t v,
                                     uint8_t* const bgra) {
  VP8YuvToBgr(y, u, v, bgra);
  bgra[3] = 0xff;
}

static WEBP_INLINE void VP8YuvToRgba(uint8_t y, uint8_t u, uint8_t v,
                                     uint8_t* const rgba) {
  VP8YuvToRgb(y, u, v, rgba);
  rgba[3] = 0xff;
}

//-----------------------------------------------------------------------------
// SSE2 extra functions (mostly for upsampling_sse2.c)

#if defined(WEBP_USE_SSE2)

// Process 32 pixels and store the result (16b, 24b or 32b per pixel) in *dst.
void VP8YuvToRgba32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
                         uint8_t* dst);
void VP8YuvToRgb32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
                        uint8_t* dst);
void VP8YuvToBgra32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
                         uint8_t* dst);
void VP8YuvToBgr32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
                        uint8_t* dst);
void VP8YuvToArgb32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
                         uint8_t* dst);
void VP8YuvToRgba444432_SSE2(const uint8_t* y, const uint8_t* u,
                             const uint8_t* v, uint8_t* dst);
void VP8YuvToRgb56532_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
                           uint8_t* dst);

#endif    // WEBP_USE_SSE2

//-----------------------------------------------------------------------------
// SSE41 extra functions (mostly for upsampling_sse41.c)

#if defined(WEBP_USE_SSE41)

// Process 32 pixels and store the result (16b, 24b or 32b per pixel) in *dst.
void VP8YuvToRgb32_SSE41(const uint8_t* y, const uint8_t* u, const uint8_t* v,
                         uint8_t* dst);
void VP8YuvToBgr32_SSE41(const uint8_t* y, const uint8_t* u, const uint8_t* v,
                         uint8_t* dst);

#endif    // WEBP_USE_SSE41

//------------------------------------------------------------------------------
// RGB -> YUV conversion

// Stub functions that can be called with various rounding values:
static WEBP_INLINE int VP8ClipUV(int uv, int rounding) {
  uv = (uv + rounding + (128 << (YUV_FIX + 2))) >> (YUV_FIX + 2);
  return ((uv & ~0xff) == 0) ? uv : (uv < 0) ? 0 : 255;
}

static WEBP_INLINE int VP8RGBToY(int r, int g, int b, int rounding) {
  const int luma = 16839 * r + 33059 * g + 6420 * b;
  return (luma + rounding + (16 << YUV_FIX)) >> YUV_FIX;  // no need to clip
}

static WEBP_INLINE int VP8RGBToU(int r, int g, int b, int rounding) {
  const int u = -9719 * r - 19081 * g + 28800 * b;
  return VP8ClipUV(u, rounding);
}

static WEBP_INLINE int VP8RGBToV(int r, int g, int b, int rounding) {
  const int v = +28800 * r - 24116 * g - 4684 * b;
  return VP8ClipUV(v, rounding);
}

#ifdef __cplusplus
}    // extern "C"
#endif

#endif  // WEBP_DSP_YUV_H_

Coverage Report

Created: 2024-07-27 06:27

Line	Count	Source (jump to first uncovered line)
1		// Copyright 2010 Google Inc. All Rights Reserved.
2		//
3		// Use of this source code is governed by a BSD-style license
4		// that can be found in the COPYING file in the root of the source
5		// tree. An additional intellectual property rights grant can be found
6		// in the file PATENTS. All contributing project authors may
7		// be found in the AUTHORS file in the root of the source tree.
8		// -----------------------------------------------------------------------------
9		//
10		// inline YUV<->RGB conversion function
11		//
12		// The exact naming is Y'CbCr, following the ITU-R BT.601 standard.
13		// More information at: https://en.wikipedia.org/wiki/YCbCr
14		// Y = 0.2569 * R + 0.5044 * G + 0.0979 * B + 16
15		// U = -0.1483 * R - 0.2911 * G + 0.4394 * B + 128
16		// V = 0.4394 * R - 0.3679 * G - 0.0715 * B + 128
17		// We use 16bit fixed point operations for RGB->YUV conversion (YUV_FIX).
18		//
19		// For the Y'CbCr to RGB conversion, the BT.601 specification reads:
20		// R = 1.164 * (Y-16) + 1.596 * (V-128)
21		// G = 1.164 * (Y-16) - 0.813 * (V-128) - 0.391 * (U-128)
22		// B = 1.164 * (Y-16) + 2.018 * (U-128)
23		// where Y is in the [16,235] range, and U/V in the [16,240] range.
24		//
25		// The fixed-point implementation used here is:
26		// R = (19077 . y + 26149 . v - 14234) >> 6
27		// G = (19077 . y - 6419 . u - 13320 . v + 8708) >> 6
28		// B = (19077 . y + 33050 . u - 17685) >> 6
29		// where the '.' operator is the mulhi_epu16 variant:
30		// a . b = ((a << 8) * b) >> 16
31		// that preserves 8 bits of fractional precision before final descaling.
32
33		// Author: Skal (pascal.massimino@gmail.com)
34
35		#ifndef WEBP_DSP_YUV_H_
36		#define WEBP_DSP_YUV_H_
37
38		#include "src/dsp/dsp.h"
39		#include "src/dec/vp8_dec.h"
40
41		//------------------------------------------------------------------------------
42		// YUV -> RGB conversion
43
44		#ifdef __cplusplus
45		extern "C" {
46		#endif
47
48		enum {
49		YUV_FIX = 16, // fixed-point precision for RGB->YUV
50		YUV_HALF = 1 << (YUV_FIX - 1),
51
52		YUV_FIX2 = 6, // fixed-point precision for YUV->RGB
53		YUV_MASK2 = (256 << YUV_FIX2) - 1
54		};
55
56		//------------------------------------------------------------------------------
57		// slower on x86 by ~7-8%, but bit-exact with the SSE2/NEON version
58
59	0	static WEBP_INLINE int MultHi(int v, int coeff) { // _mm_mulhi_epu16 emulation
60	0	return (v * coeff) >> 8;
61	0	} Unexecuted instantiation: io_dec.c:MultHi Unexecuted instantiation: upsampling.c:MultHi Unexecuted instantiation: yuv.c:MultHi Unexecuted instantiation: upsampling_sse2.c:MultHi Unexecuted instantiation: yuv_sse2.c:MultHi Unexecuted instantiation: upsampling_sse41.c:MultHi Unexecuted instantiation: yuv_sse41.c:MultHi Unexecuted instantiation: picture_csp_enc.c:MultHi Unexecuted instantiation: picture_tools_enc.c:MultHi Unexecuted instantiation: lossless_enc.c:MultHi
62
63	0	static WEBP_INLINE int VP8Clip8(int v) {
64	0	return ((v & ~YUV_MASK2) == 0) ? (v >> YUV_FIX2) : (v < 0) ? 0 : 255;
65	0	} Unexecuted instantiation: io_dec.c:VP8Clip8 Unexecuted instantiation: upsampling.c:VP8Clip8 Unexecuted instantiation: yuv.c:VP8Clip8 Unexecuted instantiation: upsampling_sse2.c:VP8Clip8 Unexecuted instantiation: yuv_sse2.c:VP8Clip8 Unexecuted instantiation: upsampling_sse41.c:VP8Clip8 Unexecuted instantiation: yuv_sse41.c:VP8Clip8 Unexecuted instantiation: picture_csp_enc.c:VP8Clip8 Unexecuted instantiation: picture_tools_enc.c:VP8Clip8 Unexecuted instantiation: lossless_enc.c:VP8Clip8
66
67	0	static WEBP_INLINE int VP8YUVToR(int y, int v) {
68	0	return VP8Clip8(MultHi(y, 19077) + MultHi(v, 26149) - 14234);
69	0	} Unexecuted instantiation: io_dec.c:VP8YUVToR Unexecuted instantiation: upsampling.c:VP8YUVToR Unexecuted instantiation: yuv.c:VP8YUVToR Unexecuted instantiation: upsampling_sse2.c:VP8YUVToR Unexecuted instantiation: yuv_sse2.c:VP8YUVToR Unexecuted instantiation: upsampling_sse41.c:VP8YUVToR Unexecuted instantiation: yuv_sse41.c:VP8YUVToR Unexecuted instantiation: picture_csp_enc.c:VP8YUVToR Unexecuted instantiation: picture_tools_enc.c:VP8YUVToR Unexecuted instantiation: lossless_enc.c:VP8YUVToR
70
71	0	static WEBP_INLINE int VP8YUVToG(int y, int u, int v) {
72	0	return VP8Clip8(MultHi(y, 19077) - MultHi(u, 6419) - MultHi(v, 13320) + 8708);
73	0	} Unexecuted instantiation: io_dec.c:VP8YUVToG Unexecuted instantiation: upsampling.c:VP8YUVToG Unexecuted instantiation: yuv.c:VP8YUVToG Unexecuted instantiation: upsampling_sse2.c:VP8YUVToG Unexecuted instantiation: yuv_sse2.c:VP8YUVToG Unexecuted instantiation: upsampling_sse41.c:VP8YUVToG Unexecuted instantiation: yuv_sse41.c:VP8YUVToG Unexecuted instantiation: picture_csp_enc.c:VP8YUVToG Unexecuted instantiation: picture_tools_enc.c:VP8YUVToG Unexecuted instantiation: lossless_enc.c:VP8YUVToG
74
75	0	static WEBP_INLINE int VP8YUVToB(int y, int u) {
76	0	return VP8Clip8(MultHi(y, 19077) + MultHi(u, 33050) - 17685);
77	0	} Unexecuted instantiation: io_dec.c:VP8YUVToB Unexecuted instantiation: upsampling.c:VP8YUVToB Unexecuted instantiation: yuv.c:VP8YUVToB Unexecuted instantiation: upsampling_sse2.c:VP8YUVToB Unexecuted instantiation: yuv_sse2.c:VP8YUVToB Unexecuted instantiation: upsampling_sse41.c:VP8YUVToB Unexecuted instantiation: yuv_sse41.c:VP8YUVToB Unexecuted instantiation: picture_csp_enc.c:VP8YUVToB Unexecuted instantiation: picture_tools_enc.c:VP8YUVToB Unexecuted instantiation: lossless_enc.c:VP8YUVToB
78
79		static WEBP_INLINE void VP8YuvToRgb(int y, int u, int v,
80	0	uint8_t* const rgb) {
81	0	rgb[0] = VP8YUVToR(y, v);
82	0	rgb[1] = VP8YUVToG(y, u, v);
83	0	rgb[2] = VP8YUVToB(y, u);
84	0	} Unexecuted instantiation: io_dec.c:VP8YuvToRgb Unexecuted instantiation: upsampling.c:VP8YuvToRgb Unexecuted instantiation: yuv.c:VP8YuvToRgb Unexecuted instantiation: upsampling_sse2.c:VP8YuvToRgb Unexecuted instantiation: yuv_sse2.c:VP8YuvToRgb Unexecuted instantiation: upsampling_sse41.c:VP8YuvToRgb Unexecuted instantiation: yuv_sse41.c:VP8YuvToRgb Unexecuted instantiation: picture_csp_enc.c:VP8YuvToRgb Unexecuted instantiation: picture_tools_enc.c:VP8YuvToRgb Unexecuted instantiation: lossless_enc.c:VP8YuvToRgb
85
86		static WEBP_INLINE void VP8YuvToBgr(int y, int u, int v,
87	0	uint8_t* const bgr) {
88	0	bgr[0] = VP8YUVToB(y, u);
89	0	bgr[1] = VP8YUVToG(y, u, v);
90	0	bgr[2] = VP8YUVToR(y, v);
91	0	} Unexecuted instantiation: io_dec.c:VP8YuvToBgr Unexecuted instantiation: upsampling.c:VP8YuvToBgr Unexecuted instantiation: yuv.c:VP8YuvToBgr Unexecuted instantiation: upsampling_sse2.c:VP8YuvToBgr Unexecuted instantiation: yuv_sse2.c:VP8YuvToBgr Unexecuted instantiation: upsampling_sse41.c:VP8YuvToBgr Unexecuted instantiation: yuv_sse41.c:VP8YuvToBgr Unexecuted instantiation: picture_csp_enc.c:VP8YuvToBgr Unexecuted instantiation: picture_tools_enc.c:VP8YuvToBgr Unexecuted instantiation: lossless_enc.c:VP8YuvToBgr
92
93		static WEBP_INLINE void VP8YuvToRgb565(int y, int u, int v,
94	0	uint8_t* const rgb) {
95	0	const int r = VP8YUVToR(y, v); // 5 usable bits
96	0	const int g = VP8YUVToG(y, u, v); // 6 usable bits
97	0	const int b = VP8YUVToB(y, u); // 5 usable bits
98	0	const int rg = (r & 0xf8) \| (g >> 5);
99	0	const int gb = ((g << 3) & 0xe0) \| (b >> 3);
100		#if (WEBP_SWAP_16BIT_CSP == 1)
101		rgb[0] = gb;
102		rgb[1] = rg;
103		#else
104	0	rgb[0] = rg;
105	0	rgb[1] = gb;
106	0	#endif
107	0	} Unexecuted instantiation: io_dec.c:VP8YuvToRgb565 Unexecuted instantiation: upsampling.c:VP8YuvToRgb565 Unexecuted instantiation: yuv.c:VP8YuvToRgb565 Unexecuted instantiation: upsampling_sse2.c:VP8YuvToRgb565 Unexecuted instantiation: yuv_sse2.c:VP8YuvToRgb565 Unexecuted instantiation: upsampling_sse41.c:VP8YuvToRgb565 Unexecuted instantiation: yuv_sse41.c:VP8YuvToRgb565 Unexecuted instantiation: picture_csp_enc.c:VP8YuvToRgb565 Unexecuted instantiation: picture_tools_enc.c:VP8YuvToRgb565 Unexecuted instantiation: lossless_enc.c:VP8YuvToRgb565
108
109		static WEBP_INLINE void VP8YuvToRgba4444(int y, int u, int v,
110	0	uint8_t* const argb) {
111	0	const int r = VP8YUVToR(y, v); // 4 usable bits
112	0	const int g = VP8YUVToG(y, u, v); // 4 usable bits
113	0	const int b = VP8YUVToB(y, u); // 4 usable bits
114	0	const int rg = (r & 0xf0) \| (g >> 4);
115	0	const int ba = (b & 0xf0) \| 0x0f; // overwrite the lower 4 bits
116		#if (WEBP_SWAP_16BIT_CSP == 1)
117		argb[0] = ba;
118		argb[1] = rg;
119		#else
120	0	argb[0] = rg;
121	0	argb[1] = ba;
122	0	#endif
123	0	} Unexecuted instantiation: io_dec.c:VP8YuvToRgba4444 Unexecuted instantiation: upsampling.c:VP8YuvToRgba4444 Unexecuted instantiation: yuv.c:VP8YuvToRgba4444 Unexecuted instantiation: upsampling_sse2.c:VP8YuvToRgba4444 Unexecuted instantiation: yuv_sse2.c:VP8YuvToRgba4444 Unexecuted instantiation: upsampling_sse41.c:VP8YuvToRgba4444 Unexecuted instantiation: yuv_sse41.c:VP8YuvToRgba4444 Unexecuted instantiation: picture_csp_enc.c:VP8YuvToRgba4444 Unexecuted instantiation: picture_tools_enc.c:VP8YuvToRgba4444 Unexecuted instantiation: lossless_enc.c:VP8YuvToRgba4444
124
125		//-----------------------------------------------------------------------------
126		// Alpha handling variants
127
128		static WEBP_INLINE void VP8YuvToArgb(uint8_t y, uint8_t u, uint8_t v,
129	0	uint8_t* const argb) {
130	0	argb[0] = 0xff;
131	0	VP8YuvToRgb(y, u, v, argb + 1);
132	0	} Unexecuted instantiation: io_dec.c:VP8YuvToArgb Unexecuted instantiation: upsampling.c:VP8YuvToArgb Unexecuted instantiation: yuv.c:VP8YuvToArgb Unexecuted instantiation: upsampling_sse2.c:VP8YuvToArgb Unexecuted instantiation: yuv_sse2.c:VP8YuvToArgb Unexecuted instantiation: upsampling_sse41.c:VP8YuvToArgb Unexecuted instantiation: yuv_sse41.c:VP8YuvToArgb Unexecuted instantiation: picture_csp_enc.c:VP8YuvToArgb Unexecuted instantiation: picture_tools_enc.c:VP8YuvToArgb Unexecuted instantiation: lossless_enc.c:VP8YuvToArgb
133
134		static WEBP_INLINE void VP8YuvToBgra(uint8_t y, uint8_t u, uint8_t v,
135	0	uint8_t* const bgra) {
136	0	VP8YuvToBgr(y, u, v, bgra);
137	0	bgra[3] = 0xff;
138	0	} Unexecuted instantiation: io_dec.c:VP8YuvToBgra Unexecuted instantiation: upsampling.c:VP8YuvToBgra Unexecuted instantiation: yuv.c:VP8YuvToBgra Unexecuted instantiation: upsampling_sse2.c:VP8YuvToBgra Unexecuted instantiation: yuv_sse2.c:VP8YuvToBgra Unexecuted instantiation: upsampling_sse41.c:VP8YuvToBgra Unexecuted instantiation: yuv_sse41.c:VP8YuvToBgra Unexecuted instantiation: picture_csp_enc.c:VP8YuvToBgra Unexecuted instantiation: picture_tools_enc.c:VP8YuvToBgra Unexecuted instantiation: lossless_enc.c:VP8YuvToBgra
139
140		static WEBP_INLINE void VP8YuvToRgba(uint8_t y, uint8_t u, uint8_t v,
141	0	uint8_t* const rgba) {
142	0	VP8YuvToRgb(y, u, v, rgba);
143	0	rgba[3] = 0xff;
144	0	} Unexecuted instantiation: io_dec.c:VP8YuvToRgba Unexecuted instantiation: upsampling.c:VP8YuvToRgba Unexecuted instantiation: yuv.c:VP8YuvToRgba Unexecuted instantiation: upsampling_sse2.c:VP8YuvToRgba Unexecuted instantiation: yuv_sse2.c:VP8YuvToRgba Unexecuted instantiation: upsampling_sse41.c:VP8YuvToRgba Unexecuted instantiation: yuv_sse41.c:VP8YuvToRgba Unexecuted instantiation: picture_csp_enc.c:VP8YuvToRgba Unexecuted instantiation: picture_tools_enc.c:VP8YuvToRgba Unexecuted instantiation: lossless_enc.c:VP8YuvToRgba
145
146		//-----------------------------------------------------------------------------
147		// SSE2 extra functions (mostly for upsampling_sse2.c)
148
149		#if defined(WEBP_USE_SSE2)
150
151		// Process 32 pixels and store the result (16b, 24b or 32b per pixel) in *dst.
152		void VP8YuvToRgba32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
153		uint8_t* dst);
154		void VP8YuvToRgb32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
155		uint8_t* dst);
156		void VP8YuvToBgra32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
157		uint8_t* dst);
158		void VP8YuvToBgr32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
159		uint8_t* dst);
160		void VP8YuvToArgb32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
161		uint8_t* dst);
162		void VP8YuvToRgba444432_SSE2(const uint8_t* y, const uint8_t* u,
163		const uint8_t* v, uint8_t* dst);
164		void VP8YuvToRgb56532_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
165		uint8_t* dst);
166
167		#endif // WEBP_USE_SSE2
168
169		//-----------------------------------------------------------------------------
170		// SSE41 extra functions (mostly for upsampling_sse41.c)
171
172		#if defined(WEBP_USE_SSE41)
173
174		// Process 32 pixels and store the result (16b, 24b or 32b per pixel) in *dst.
175		void VP8YuvToRgb32_SSE41(const uint8_t* y, const uint8_t* u, const uint8_t* v,
176		uint8_t* dst);
177		void VP8YuvToBgr32_SSE41(const uint8_t* y, const uint8_t* u, const uint8_t* v,
178		uint8_t* dst);
179
180		#endif // WEBP_USE_SSE41
181
182		//------------------------------------------------------------------------------
183		// RGB -> YUV conversion
184
185		// Stub functions that can be called with various rounding values:
186	0	static WEBP_INLINE int VP8ClipUV(int uv, int rounding) {
187	0	uv = (uv + rounding + (128 << (YUV_FIX + 2))) >> (YUV_FIX + 2);
188	0	return ((uv & ~0xff) == 0) ? uv : (uv < 0) ? 0 : 255;
189	0	} Unexecuted instantiation: io_dec.c:VP8ClipUV Unexecuted instantiation: upsampling.c:VP8ClipUV Unexecuted instantiation: yuv.c:VP8ClipUV Unexecuted instantiation: upsampling_sse2.c:VP8ClipUV Unexecuted instantiation: yuv_sse2.c:VP8ClipUV Unexecuted instantiation: upsampling_sse41.c:VP8ClipUV Unexecuted instantiation: yuv_sse41.c:VP8ClipUV Unexecuted instantiation: picture_csp_enc.c:VP8ClipUV Unexecuted instantiation: picture_tools_enc.c:VP8ClipUV Unexecuted instantiation: lossless_enc.c:VP8ClipUV
190
191	0	static WEBP_INLINE int VP8RGBToY(int r, int g, int b, int rounding) {
192	0	const int luma = 16839 * r + 33059 * g + 6420 * b;
193	0	return (luma + rounding + (16 << YUV_FIX)) >> YUV_FIX; // no need to clip
194	0	} Unexecuted instantiation: io_dec.c:VP8RGBToY Unexecuted instantiation: upsampling.c:VP8RGBToY Unexecuted instantiation: yuv.c:VP8RGBToY Unexecuted instantiation: upsampling_sse2.c:VP8RGBToY Unexecuted instantiation: yuv_sse2.c:VP8RGBToY Unexecuted instantiation: upsampling_sse41.c:VP8RGBToY Unexecuted instantiation: yuv_sse41.c:VP8RGBToY Unexecuted instantiation: picture_csp_enc.c:VP8RGBToY Unexecuted instantiation: picture_tools_enc.c:VP8RGBToY Unexecuted instantiation: lossless_enc.c:VP8RGBToY
195
196	0	static WEBP_INLINE int VP8RGBToU(int r, int g, int b, int rounding) {
197	0	const int u = -9719 * r - 19081 * g + 28800 * b;
198	0	return VP8ClipUV(u, rounding);
199	0	} Unexecuted instantiation: io_dec.c:VP8RGBToU Unexecuted instantiation: upsampling.c:VP8RGBToU Unexecuted instantiation: yuv.c:VP8RGBToU Unexecuted instantiation: upsampling_sse2.c:VP8RGBToU Unexecuted instantiation: yuv_sse2.c:VP8RGBToU Unexecuted instantiation: upsampling_sse41.c:VP8RGBToU Unexecuted instantiation: yuv_sse41.c:VP8RGBToU Unexecuted instantiation: picture_csp_enc.c:VP8RGBToU Unexecuted instantiation: picture_tools_enc.c:VP8RGBToU Unexecuted instantiation: lossless_enc.c:VP8RGBToU
200
201	0	static WEBP_INLINE int VP8RGBToV(int r, int g, int b, int rounding) {
202	0	const int v = +28800 * r - 24116 * g - 4684 * b;
203	0	return VP8ClipUV(v, rounding);
204	0	} Unexecuted instantiation: io_dec.c:VP8RGBToV Unexecuted instantiation: upsampling.c:VP8RGBToV Unexecuted instantiation: yuv.c:VP8RGBToV Unexecuted instantiation: upsampling_sse2.c:VP8RGBToV Unexecuted instantiation: yuv_sse2.c:VP8RGBToV Unexecuted instantiation: upsampling_sse41.c:VP8RGBToV Unexecuted instantiation: yuv_sse41.c:VP8RGBToV Unexecuted instantiation: picture_csp_enc.c:VP8RGBToV Unexecuted instantiation: picture_tools_enc.c:VP8RGBToV Unexecuted instantiation: lossless_enc.c:VP8RGBToV
205
206		#ifdef __cplusplus
207		} // extern "C"
208		#endif
209
210		#endif // WEBP_DSP_YUV_H_