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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "Resources.h"
#include "SkCanvas.h"
#include "SkData.h"
#include "SkImageEncoder.h"
#include "SkUnPreMultiply.h"
namespace skiagm {
static void make_opaque_256(SkBitmap* bitmap) {
GetResourceAsBitmap("mandrill_256.png", bitmap);
}
static void make_premul_256(SkBitmap* bitmap) {
SkBitmap tmp;
GetResourceAsBitmap("yellow_rose.png", &tmp);
tmp.extractSubset(bitmap, SkIRect::MakeWH(256, 256));
bitmap->lockPixels();
}
static void make_unpremul_256(SkBitmap* bitmap) {
make_premul_256(bitmap);
for (int y = 0; y < bitmap->height(); y++) {
for (int x = 0; x < bitmap->width(); x++) {
SkPMColor* pixel = bitmap->getAddr32(x, y);
*pixel = SkUnPreMultiply::UnPreMultiplyPreservingByteOrder(*pixel);
}
}
bitmap->setAlphaType(kUnpremul_SkAlphaType);
}
static SkImageEncoder* make_encoder(SkImageEncoder::Type type) {
#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
return CreateImageEncoder_CG(type);
#elif defined(SK_BUILD_FOR_WIN)
return CreateImageEncoder_WIC(type);
#else
switch (type) {
case SkImageEncoder::kPNG_Type:
return CreatePNGImageEncoder();
case SkImageEncoder::kJPEG_Type:
return CreateJPEGImageEncoder();
case SkImageEncoder::kWEBP_Type:
return CreateWEBPImageEncoder();
default:
SkASSERT(false);
return nullptr;
}
#endif
}
#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
static SkImageEncoder::Type kTypes[] {
SkImageEncoder::kPNG_Type, SkImageEncoder::kJPEG_Type, SkImageEncoder::kGIF_Type,
SkImageEncoder::kBMP_Type, SkImageEncoder::kICO_Type,
};
#elif defined(SK_BUILD_FOR_WIN)
// Use PNG multiple times because our WIC encoder does not support GIF, BMP, or ICO.
static SkImageEncoder::Type kTypes[] {
SkImageEncoder::kPNG_Type, SkImageEncoder::kJPEG_Type, SkImageEncoder::kPNG_Type,
SkImageEncoder::kPNG_Type, SkImageEncoder::kPNG_Type,
};
#else
// Use WEBP in place of GIF. Use PNG two extra times. We don't support GIF, BMP, or ICO.
static SkImageEncoder::Type kTypes[] {
SkImageEncoder::kPNG_Type, SkImageEncoder::kJPEG_Type, SkImageEncoder::kWEBP_Type,
SkImageEncoder::kPNG_Type, SkImageEncoder::kPNG_Type,
};
#endif
class EncodePlatformGM : public GM {
public:
EncodePlatformGM() {}
protected:
SkString onShortName() override {
return SkString("encode-platform");
}
SkISize onISize() override {
return SkISize::Make(256 * SK_ARRAY_COUNT(kTypes), 256 * 3);
}
void onDraw(SkCanvas* canvas) override {
SkBitmap opaqueBm, premulBm, unpremulBm;
make_opaque_256(&opaqueBm);
make_premul_256(&premulBm);
make_unpremul_256(&unpremulBm);
for (SkImageEncoder::Type type : kTypes) {
std::unique_ptr<SkImageEncoder> encoder(make_encoder(type));
sk_sp<SkData> opaqueData(encoder->encodeData(opaqueBm, 100));
sk_sp<SkData> premulData(encoder->encodeData(premulBm, 100));
sk_sp<SkData> unpremulData(encoder->encodeData(unpremulBm, 100));
sk_sp<SkImage> opaqueImage = SkImage::MakeFromEncoded(opaqueData);
sk_sp<SkImage> premulImage = SkImage::MakeFromEncoded(premulData);
sk_sp<SkImage> unpremulImage = SkImage::MakeFromEncoded(unpremulData);
canvas->drawImage(opaqueImage.get(), 0.0f, 0.0f);
canvas->drawImage(premulImage.get(), 0.0f, 256.0f);
canvas->drawImage(unpremulImage.get(), 0.0f, 512.0f);
canvas->translate(256.0f, 0.0f);
}
}
private:
typedef GM INHERITED;
};
DEF_GM( return new EncodePlatformGM; )
}
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