AuroraMiddleware/skia2
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
b1d9977825
skia2/gm/yuvtorgbeffect.cpp
Robert Phillips 0a22ba84e0 Add kIdentity_SkYUVColorSpace 
This utility color space just maps Y to R, U to G and V to B when flattening or accessing the YUV planes. Clients can then add a colorFilter to directly manipulate the YUV values.

This cannot land in Skia until the following CL lands in Chrome:

https://chromium-review.googlesource.com/c/chromium/src/+/1506004 (Update usage of Skia's SkYUVColorSpace enum to allow the addition of a new value)

Change-Id: Id9403ebbd009b45281d4d53fca52f68692d6c69f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/198160
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2019-03-11 13:47:40 +00:00

253 lines
8.9 KiB
C++
Raw Blame History

/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
// This test only works with the GPU backend.
#include "gm.h"
#include "GrContext.h"
#include "GrContextPriv.h"
#include "GrProxyProvider.h"
#include "GrRenderTargetContextPriv.h"
#include "GrTextureProxy.h"
#include "SkBitmap.h"
#include "SkGr.h"
#include "SkGradientShader.h"
#include "effects/GrYUVtoRGBEffect.h"
#include "ops/GrDrawOp.h"
#include "ops/GrFillRectOp.h"
#define YSIZE 8
#define USIZE 4
#define VSIZE 4
namespace skiagm {
/**
* This GM directly exercises GrYUVtoRGBEffect.
*/
class YUVtoRGBEffect : public GpuGM {
public:
YUVtoRGBEffect() {
this->setBGColor(0xFFFFFFFF);
}
protected:
SkString onShortName() override {
return SkString("yuv_to_rgb_effect");
}
SkISize onISize() override {
int numRows = kLastEnum_SkYUVColorSpace + 1;
return SkISize::Make(238, kDrawPad + numRows * kColorSpaceOffset);
}
void onOnceBeforeDraw() override {
SkBitmap bmp[3];
SkImageInfo yinfo = SkImageInfo::MakeA8(YSIZE, YSIZE);
bmp[0].allocPixels(yinfo);
SkImageInfo uinfo = SkImageInfo::MakeA8(USIZE, USIZE);
bmp[1].allocPixels(uinfo);
SkImageInfo vinfo = SkImageInfo::MakeA8(VSIZE, VSIZE);
bmp[2].allocPixels(vinfo);
unsigned char* pixels[3];
for (int i = 0; i < 3; ++i) {
pixels[i] = (unsigned char*)bmp[i].getPixels();
}
int color[] = {0, 85, 170};
const int limit[] = {255, 0, 255};
const int invl[] = {0, 255, 0};
const int inc[] = {1, -1, 1};
for (int i = 0; i < 3; ++i) {
const size_t nbBytes = bmp[i].rowBytes() * bmp[i].height();
for (size_t j = 0; j < nbBytes; ++j) {
pixels[i][j] = (unsigned char)color[i];
color[i] = (color[i] == limit[i]) ? invl[i] : color[i] + inc[i];
}
}
for (int i = 0; i < 3; ++i) {
fImage[i] = SkImage::MakeFromBitmap(bmp[i]);
}
}
DrawResult onDraw(GrContext* context, GrRenderTargetContext* renderTargetContext,
SkCanvas* canvas, SkString* errorMsg) override {
GrProxyProvider* proxyProvider = context->priv().proxyProvider();
sk_sp<GrTextureProxy> proxies[3];
for (int i = 0; i < 3; ++i) {
proxies[i] = proxyProvider->createTextureProxy(fImage[i], kNone_GrSurfaceFlags, 1,
SkBudgeted::kYes, SkBackingFit::kExact);
if (!proxies[i]) {
*errorMsg = "Failed to create proxy";
return DrawResult::kFail;
}
}
for (int space = kJPEG_SkYUVColorSpace; space <= kLastEnum_SkYUVColorSpace; ++space) {
SkRect renderRect = SkRect::MakeWH(SkIntToScalar(fImage[0]->width()),
SkIntToScalar(fImage[0]->height()));
renderRect.outset(kDrawPad, kDrawPad);
SkScalar y = kDrawPad + kTestPad + space * kColorSpaceOffset;
SkScalar x = kDrawPad + kTestPad;
const int indices[6][3] = {{0, 1, 2}, {0, 2, 1}, {1, 0, 2},
{1, 2, 0}, {2, 0, 1}, {2, 1, 0}};
for (int i = 0; i < 6; ++i) {
SkYUVAIndex yuvaIndices[4] = {
{ indices[i][0], SkColorChannel::kR },
{ indices[i][1], SkColorChannel::kR },
{ indices[i][2], SkColorChannel::kR },
{ -1, SkColorChannel::kA }
};
std::unique_ptr<GrFragmentProcessor> fp(
GrYUVtoRGBEffect::Make(proxies, yuvaIndices,
static_cast<SkYUVColorSpace>(space),
GrSamplerState::Filter::kNearest));
if (fp) {
GrPaint grPaint;
grPaint.setXPFactory(GrPorterDuffXPFactory::Get(SkBlendMode::kSrc));
grPaint.addColorFragmentProcessor(std::move(fp));
SkMatrix viewMatrix;
viewMatrix.setTranslate(x, y);
renderTargetContext->priv().testingOnly_addDrawOp(
GrFillRectOp::Make(context, std::move(grPaint), GrAAType::kNone,
viewMatrix, renderRect));
}
x += renderRect.width() + kTestPad;
}
}
return DrawResult::kOk;
}
private:
sk_sp<SkImage> fImage[3];
static constexpr SkScalar kDrawPad = 10.f;
static constexpr SkScalar kTestPad = 10.f;
static constexpr SkScalar kColorSpaceOffset = 36.f;
typedef GM INHERITED;
};
DEF_GM(return new YUVtoRGBEffect;)
//////////////////////////////////////////////////////////////////////////////
class YUVNV12toRGBEffect : public GpuGM {
public:
YUVNV12toRGBEffect() {
this->setBGColor(0xFFFFFFFF);
}
protected:
SkString onShortName() override {
return SkString("yuv_nv12_to_rgb_effect");
}
SkISize onISize() override {
int numRows = kLastEnum_SkYUVColorSpace + 1;
return SkISize::Make(48, kDrawPad + numRows * kColorSpaceOffset);
}
void onOnceBeforeDraw() override {
SkBitmap bmp[2];
SkImageInfo yinfo = SkImageInfo::MakeA8(YSIZE, YSIZE);
bmp[0].allocPixels(yinfo);
SkImageInfo uvinfo = SkImageInfo::MakeN32Premul(USIZE, USIZE);
bmp[1].allocPixels(uvinfo);
int color[] = {0, 85, 170};
const int limit[] = {255, 0, 255};
const int invl[] = {0, 255, 0};
const int inc[] = {1, -1, 1};
{
unsigned char* pixels = (unsigned char*)bmp[0].getPixels();
const size_t nbBytes = bmp[0].rowBytes() * bmp[0].height();
for (size_t j = 0; j < nbBytes; ++j) {
pixels[j] = (unsigned char)color[0];
color[0] = (color[0] == limit[0]) ? invl[0] : color[0] + inc[0];
}
}
{
for (int y = 0; y < bmp[1].height(); ++y) {
uint32_t* pixels = bmp[1].getAddr32(0, y);
for (int j = 0; j < bmp[1].width(); ++j) {
pixels[j] = SkColorSetARGB(0, color[1], color[2], 0);
color[1] = (color[1] == limit[1]) ? invl[1] : color[1] + inc[1];
color[2] = (color[2] == limit[2]) ? invl[2] : color[2] + inc[2];
}
}
}
for (int i = 0; i < 2; ++i) {
fImage[i] = SkImage::MakeFromBitmap(bmp[i]);
}
}
DrawResult onDraw(GrContext* context, GrRenderTargetContext* renderTargetContext,
SkCanvas* canvas, SkString* errorMsg) override {
GrProxyProvider* proxyProvider = context->priv().proxyProvider();
sk_sp<GrTextureProxy> proxies[2];
for (int i = 0; i < 2; ++i) {
proxies[i] = proxyProvider->createTextureProxy(fImage[i], kNone_GrSurfaceFlags, 1,
SkBudgeted::kYes, SkBackingFit::kExact);
if (!proxies[i]) {
*errorMsg = "Failed to create proxy";
return DrawResult::kFail;
}
}
SkYUVAIndex yuvaIndices[4] = {
{ 0, SkColorChannel::kR },
{ 1, SkColorChannel::kR },
{ 1, SkColorChannel::kG },
{ -1, SkColorChannel::kA }
};
for (int space = kJPEG_SkYUVColorSpace; space <= kLastEnum_SkYUVColorSpace; ++space) {
SkRect renderRect = SkRect::MakeWH(SkIntToScalar(fImage[0]->width()),
SkIntToScalar(fImage[0]->height()));
renderRect.outset(kDrawPad, kDrawPad);
SkScalar y = kDrawPad + kTestPad + space * kColorSpaceOffset;
SkScalar x = kDrawPad + kTestPad;
GrPaint grPaint;
grPaint.setXPFactory(GrPorterDuffXPFactory::Get(SkBlendMode::kSrc));
auto fp = GrYUVtoRGBEffect::Make(proxies, yuvaIndices,
static_cast<SkYUVColorSpace>(space),
GrSamplerState::Filter::kNearest);
if (fp) {
SkMatrix viewMatrix;
viewMatrix.setTranslate(x, y);
grPaint.addColorFragmentProcessor(std::move(fp));
std::unique_ptr<GrDrawOp> op(GrFillRectOp::Make(context, std::move(grPaint),
GrAAType::kNone, viewMatrix, renderRect));
renderTargetContext->priv().testingOnly_addDrawOp(std::move(op));
}
}
return DrawResult::kOk;
}
private:
sk_sp<SkImage> fImage[2];
static constexpr SkScalar kDrawPad = 10.f;
static constexpr SkScalar kTestPad = 10.f;
static constexpr SkScalar kColorSpaceOffset = 36.f;
typedef GM INHERITED;
};
DEF_GM(return new YUVNV12toRGBEffect;)
}
Reference in New Issue View Git Blame Copy Permalink