skia2/gm/encode_alpha_jpeg.cpp
John Stiles 7571f9e490 Replace 'typedef xxxxx INHERITED' with 'using INHERITED = xxxx;'.
Mechanically updated via Xcode "Replace Regular Expression":

  typedef (.*) INHERITED;
    -->
  using INHERITED = $1;

The ClangTidy approach generated an even larger CL which would have
required a significant amount of hand-tweaking to be usable.

Change-Id: I671dc9d9efdf6d60151325c8d4d13fad7e10a15b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/314999
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2020-09-03 03:41:26 +00:00

112 lines
4.1 KiB
C++

/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColorSpace.h"
#include "include/core/SkData.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkPixmap.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkSize.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
#include "include/encode/SkJpegEncoder.h"
#include "include/private/SkTemplates.h"
#include "tools/Resources.h"
namespace skiagm {
static inline void read_into_pixmap(SkPixmap* dst, SkImageInfo dstInfo, void* dstPixels,
sk_sp<SkImage> src) {
dst->reset(dstInfo, dstPixels, dstInfo.minRowBytes());
src->readPixels(nullptr, *dst, 0, 0, SkImage::CachingHint::kDisallow_CachingHint);
}
static inline sk_sp<SkImage> encode_pixmap_and_make_image(const SkPixmap& src,
SkJpegEncoder::AlphaOption alphaOption) {
SkDynamicMemoryWStream dst;
SkJpegEncoder::Options options;
options.fAlphaOption = alphaOption;
SkJpegEncoder::Encode(&dst, src, options);
return SkImage::MakeFromEncoded(dst.detachAsData());
}
class EncodeJpegAlphaOptsGM : public GM {
public:
EncodeJpegAlphaOptsGM() {}
protected:
SkString onShortName() override {
return SkString("encode-alpha-jpeg");
}
SkISize onISize() override {
return SkISize::Make(400, 200);
}
DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
sk_sp<SkImage> srcImg = GetResourceAsImage("images/rainbow-gradient.png");
if (!srcImg) {
*errorMsg = "Could not load images/rainbow-gradient.png. "
"Did you forget to set the resourcePath?";
return DrawResult::kFail;
}
fStorage.reset(srcImg->width() * srcImg->height() *
SkColorTypeBytesPerPixel(kRGBA_F16_SkColorType));
SkPixmap src;
SkImageInfo info = SkImageInfo::MakeN32Premul(srcImg->width(), srcImg->height(),
canvas->imageInfo().colorSpace() ? SkColorSpace::MakeSRGB() : nullptr);
read_into_pixmap(&src, info, fStorage.get(), srcImg);
// Encode 8888 premul.
auto img0 = encode_pixmap_and_make_image(src, SkJpegEncoder::AlphaOption::kIgnore);
auto img1 = encode_pixmap_and_make_image(src, SkJpegEncoder::AlphaOption::kBlendOnBlack);
canvas->drawImage(img0, 0.0f, 0.0f);
canvas->drawImage(img1, 0.0f, 100.0f);
// Encode 8888 unpremul
info = info.makeAlphaType(kUnpremul_SkAlphaType);
read_into_pixmap(&src, info, fStorage.get(), srcImg);
img0 = encode_pixmap_and_make_image(src, SkJpegEncoder::AlphaOption::kIgnore);
img1 = encode_pixmap_and_make_image(src, SkJpegEncoder::AlphaOption::kBlendOnBlack);
canvas->drawImage(img0, 100.0f, 0.0f);
canvas->drawImage(img1, 100.0f, 100.0f);
// Encode F16 premul
info = SkImageInfo::Make(srcImg->width(), srcImg->height(), kRGBA_F16_SkColorType,
kPremul_SkAlphaType, SkColorSpace::MakeSRGB());
read_into_pixmap(&src, info, fStorage.get(), srcImg);
img0 = encode_pixmap_and_make_image(src, SkJpegEncoder::AlphaOption::kIgnore);
img1 = encode_pixmap_and_make_image(src, SkJpegEncoder::AlphaOption::kBlendOnBlack);
canvas->drawImage(img0, 200.0f, 0.0f);
canvas->drawImage(img1, 200.0f, 100.0f);
// Encode F16 unpremul
info = info.makeAlphaType(kUnpremul_SkAlphaType);
read_into_pixmap(&src, info, fStorage.get(), srcImg);
img0 = encode_pixmap_and_make_image(src, SkJpegEncoder::AlphaOption::kIgnore);
img1 = encode_pixmap_and_make_image(src, SkJpegEncoder::AlphaOption::kBlendOnBlack);
canvas->drawImage(img0, 300.0f, 0.0f);
canvas->drawImage(img1, 300.0f, 100.0f);
return DrawResult::kOk;
}
private:
SkAutoTMalloc<uint8_t> fStorage;
using INHERITED = GM;
};
DEF_GM( return new EncodeJpegAlphaOptsGM; )
} // namespace skiagm