skia2/gm/encode-alpha-jpeg.cpp
Mike Klein c0bd9f9fe5 rewrite includes to not need so much -Ifoo
Current strategy: everything from the top

Things to look at first are the manual changes:

   - added tools/rewrite_includes.py
   - removed -Idirectives from BUILD.gn
   - various compile.sh simplifications
   - tweak tools/embed_resources.py
   - update gn/find_headers.py to write paths from the top
   - update gn/gn_to_bp.py SkUserConfig.h layout
     so that #include "include/config/SkUserConfig.h" always
     gets the header we want.

No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2019-04-24 16:27:11 +00:00

103 lines
3.7 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/SkImage.h"
#include "include/encode/SkJpegEncoder.h"
#include "include/private/SkImageInfoPriv.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(*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;
typedef GM INHERITED;
};
DEF_GM( return new EncodeJpegAlphaOptsGM; )
};