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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 "SkImage.h"
#include "SkImageEncoderPriv.h"
#include "SkJpegEncoder.h"
#include "SkPngEncoder.h"
#include "SkUnPreMultiply.h"
#include "SkWebpEncoder.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));
}
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);
}
#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
static SkEncodedImageFormat kTypes[] {
SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kJPEG, SkEncodedImageFormat::kGIF,
SkEncodedImageFormat::kBMP, SkEncodedImageFormat::kICO,
};
#elif defined(SK_BUILD_FOR_WIN)
// Use PNG multiple times because our WIC encoder does not support GIF, BMP, or ICO.
static SkEncodedImageFormat kTypes[] {
SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kJPEG, SkEncodedImageFormat::kPNG,
SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kPNG,
};
#else
// Use WEBP in place of GIF. Use PNG two extra times. We don't support GIF, BMP, or ICO.
static SkEncodedImageFormat kTypes[] {
SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kJPEG, SkEncodedImageFormat::kWEBP,
SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kPNG,
};
#endif
static sk_sp<SkData> encode_data(SkEncodedImageFormat type, const SkBitmap& bitmap) {
SkPixmap src;
if (!bitmap.peekPixels(&src)) {
return nullptr;
}
SkDynamicMemoryWStream buf;
#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
return SkEncodeImageWithCG(&buf, src, type) ? buf.detachAsData() : nullptr;
#elif defined(SK_BUILD_FOR_WIN)
return SkEncodeImageWithWIC(&buf, src, type, 100) ? buf.detachAsData() : nullptr;
#else
switch (type) {
case SkEncodedImageFormat::kPNG: {
SkPngEncoder::Options options;
options.fUnpremulBehavior = SkTransferFunctionBehavior::kIgnore;
bool success = SkPngEncoder::Encode(&buf, src, options);
return success ? buf.detachAsData() : nullptr;
}
case SkEncodedImageFormat::kJPEG: {
bool success = SkJpegEncoder::Encode(&buf, src, SkJpegEncoder::Options());
return success ? buf.detachAsData() : nullptr;
}
case SkEncodedImageFormat::kWEBP: {
SkWebpEncoder::Options options;
options.fUnpremulBehavior = SkTransferFunctionBehavior::kIgnore;
bool success = SkWebpEncoder::Encode(&buf, src, options);
return success ? buf.detachAsData() : nullptr;
}
default:
SkASSERT(false);
return nullptr;
}
#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 (SkEncodedImageFormat type : kTypes) {
auto opaqueImage = SkImage::MakeFromEncoded(encode_data(type, opaqueBm));
auto premulImage = SkImage::MakeFromEncoded(encode_data(type, premulBm));
auto unpremulImage = SkImage::MakeFromEncoded(encode_data(type, unpremulBm));
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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