1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrYUVEffect.h"
#include "GrCoordTransform.h"
#include "GrFragmentProcessor.h"
#include "GrProcessor.h"
#include "GrTextureProxy.h"
#include "glsl/GrGLSLFragmentProcessor.h"
#include "glsl/GrGLSLFragmentShaderBuilder.h"
#include "glsl/GrGLSLProgramDataManager.h"
#include "glsl/GrGLSLUniformHandler.h"
namespace {
static const float kJPEGConversionMatrix[16] = {
1.0f, 0.0f, 1.402f, -0.703749f,
1.0f, -0.344136f, -0.714136f, 0.531211f,
1.0f, 1.772f, 0.0f, -0.889475f,
0.0f, 0.0f, 0.0f, 1.0
};
static const float kRec601ConversionMatrix[16] = {
1.164f, 0.0f, 1.596f, -0.87075f,
1.164f, -0.391f, -0.813f, 0.52925f,
1.164f, 2.018f, 0.0f, -1.08175f,
0.0f, 0.0f, 0.0f, 1.0}
;
static const float kRec709ConversionMatrix[16] = {
1.164f, 0.0f, 1.793f, -0.96925f,
1.164f, -0.213f, -0.533f, 0.30025f,
1.164f, 2.112f, 0.0f, -1.12875f,
0.0f, 0.0f, 0.0f, 1.0f}
;
class YUVtoRGBEffect : public GrFragmentProcessor {
public:
static std::unique_ptr<GrFragmentProcessor> Make(sk_sp<GrTextureProxy> yProxy,
sk_sp<GrTextureProxy> uProxy,
sk_sp<GrTextureProxy> vProxy,
const SkISize sizes[3],
SkYUVColorSpace colorSpace, bool nv12) {
SkScalar w[3], h[3];
w[0] = SkIntToScalar(sizes[0].fWidth);
h[0] = SkIntToScalar(sizes[0].fHeight);
w[1] = SkIntToScalar(sizes[1].fWidth);
h[1] = SkIntToScalar(sizes[1].fHeight);
w[2] = SkIntToScalar(sizes[2].fWidth);
h[2] = SkIntToScalar(sizes[2].fHeight);
const SkMatrix yuvMatrix[3] = {
SkMatrix::I(),
SkMatrix::MakeScale(w[1] / w[0], h[1] / h[0]),
SkMatrix::MakeScale(w[2] / w[0], h[2] / h[0])
};
GrSamplerState::Filter uvFilterMode =
((sizes[1].fWidth != sizes[0].fWidth) ||
(sizes[1].fHeight != sizes[0].fHeight) ||
(sizes[2].fWidth != sizes[0].fWidth) ||
(sizes[2].fHeight != sizes[0].fHeight)) ?
GrSamplerState::Filter::kBilerp :
GrSamplerState::Filter::kNearest;
return std::unique_ptr<GrFragmentProcessor>(
new YUVtoRGBEffect(std::move(yProxy), std::move(uProxy), std::move(vProxy),
yuvMatrix, uvFilterMode, colorSpace, nv12));
}
const char* name() const override { return "YUV to RGB"; }
std::unique_ptr<GrFragmentProcessor> clone() const override {
return std::unique_ptr<GrFragmentProcessor>(new YUVtoRGBEffect(*this));
}
SkYUVColorSpace getColorSpace() const { return fColorSpace; }
bool isNV12() const {
return fNV12;
}
class GLSLProcessor : public GrGLSLFragmentProcessor {
public:
void emitCode(EmitArgs& args) override {
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
const YUVtoRGBEffect& effect = args.fFp.cast<YUVtoRGBEffect>();
const char* colorSpaceMatrix = nullptr;
fMatrixUni = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kHalf4x4_GrSLType,
"ColorSpaceMatrix", &colorSpaceMatrix);
fragBuilder->codeAppendf("%s = half4(", args.fOutputColor);
fragBuilder->appendTextureLookup(args.fTexSamplers[0],
args.fTransformedCoords[0].c_str(),
args.fTransformedCoords[0].getType());
fragBuilder->codeAppend(".r,");
fragBuilder->appendTextureLookup(args.fTexSamplers[1],
args.fTransformedCoords[1].c_str(),
args.fTransformedCoords[1].getType());
if (effect.fNV12) {
fragBuilder->codeAppendf(".rg,");
} else {
fragBuilder->codeAppend(".r,");
fragBuilder->appendTextureLookup(args.fTexSamplers[2],
args.fTransformedCoords[2].c_str(),
args.fTransformedCoords[2].getType());
fragBuilder->codeAppendf(".r,");
}
fragBuilder->codeAppendf("1.0) * %s;", colorSpaceMatrix);
}
protected:
void onSetData(const GrGLSLProgramDataManager& pdman,
const GrFragmentProcessor& processor) override {
const YUVtoRGBEffect& yuvEffect = processor.cast<YUVtoRGBEffect>();
switch (yuvEffect.getColorSpace()) {
case kJPEG_SkYUVColorSpace:
pdman.setMatrix4f(fMatrixUni, kJPEGConversionMatrix);
break;
case kRec601_SkYUVColorSpace:
pdman.setMatrix4f(fMatrixUni, kRec601ConversionMatrix);
break;
case kRec709_SkYUVColorSpace:
pdman.setMatrix4f(fMatrixUni, kRec709ConversionMatrix);
break;
}
}
private:
GrGLSLProgramDataManager::UniformHandle fMatrixUni;
typedef GrGLSLFragmentProcessor INHERITED;
};
private:
YUVtoRGBEffect(sk_sp<GrTextureProxy> yProxy, sk_sp<GrTextureProxy> uProxy,
sk_sp<GrTextureProxy> vProxy, const SkMatrix yuvMatrix[3],
GrSamplerState::Filter uvFilterMode, SkYUVColorSpace colorSpace, bool nv12)
: INHERITED(kYUVtoRGBEffect_ClassID, kPreservesOpaqueInput_OptimizationFlag)
, fYTransform(yuvMatrix[0], yProxy.get())
, fYSampler(std::move(yProxy))
, fUTransform(yuvMatrix[1], uProxy.get())
, fUSampler(std::move(uProxy), uvFilterMode)
, fVSampler(vProxy, uvFilterMode)
, fColorSpace(colorSpace)
, fNV12(nv12) {
this->addCoordTransform(&fYTransform);
this->addTextureSampler(&fYSampler);
this->addCoordTransform(&fUTransform);
this->addTextureSampler(&fUSampler);
if (!fNV12) {
fVTransform = GrCoordTransform(yuvMatrix[2], vProxy.get());
this->addCoordTransform(&fVTransform);
this->addTextureSampler(&fVSampler);
}
}
YUVtoRGBEffect(const YUVtoRGBEffect& that)
: INHERITED(kYUVtoRGBEffect_ClassID, kPreservesOpaqueInput_OptimizationFlag)
, fYTransform(that.fYTransform)
, fYSampler(that.fYSampler)
, fUTransform(that.fUTransform)
, fUSampler(that.fUSampler)
, fVTransform(that.fVTransform)
, fVSampler(that.fVSampler)
, fColorSpace(that.fColorSpace)
, fNV12(that.fNV12) {
this->addCoordTransform(&fYTransform);
this->addTextureSampler(&fYSampler);
this->addCoordTransform(&fUTransform);
this->addTextureSampler(&fUSampler);
if (!fNV12) {
this->addCoordTransform(&fVTransform);
this->addTextureSampler(&fVSampler);
}
}
GrGLSLFragmentProcessor* onCreateGLSLInstance() const override {
return new GLSLProcessor;
}
void onGetGLSLProcessorKey(const GrShaderCaps& caps, GrProcessorKeyBuilder* b) const override {
b->add32(fNV12);
}
bool onIsEqual(const GrFragmentProcessor& sBase) const override {
const YUVtoRGBEffect& s = sBase.cast<YUVtoRGBEffect>();
return (fColorSpace == s.getColorSpace()) && (fNV12 == s.isNV12());
}
GrCoordTransform fYTransform;
TextureSampler fYSampler;
GrCoordTransform fUTransform;
TextureSampler fUSampler;
GrCoordTransform fVTransform;
TextureSampler fVSampler;
SkYUVColorSpace fColorSpace;
bool fNV12;
typedef GrFragmentProcessor INHERITED;
};
}
//////////////////////////////////////////////////////////////////////////////
std::unique_ptr<GrFragmentProcessor> GrYUVEffect::MakeYUVToRGB(
sk_sp<GrTextureProxy> yProxy, sk_sp<GrTextureProxy> uProxy, sk_sp<GrTextureProxy> vProxy,
const SkISize sizes[3], SkYUVColorSpace colorSpace, bool nv12) {
SkASSERT(yProxy && uProxy && vProxy && sizes);
return YUVtoRGBEffect::Make(std::move(yProxy), std::move(uProxy), std::move(vProxy),
sizes, colorSpace, nv12);
}
|
