db6830162e
(re-land248ff02&2cb6cb7, with changes) - Hide SkImageEncoder class in private header. - SkImageEncoder::Type becomes SkEncodedImageFormat - SkEncodedFormat becomes SkEncodedImageFormat - SkImageEncoder static functions replaced with single function EncodeImage() - utility wrappers for EncodeImage() are in sk_tool_utils.h TODO: remove link-time registration mechanism. TODO: clean up clients use of API and flip the flag. TODO: implement EncodeImage() in chromeium/skia/ext Change-Id: I47d451e50be4d5c6c130869c7fa7c2857243d9f0 Reviewed-on: https://skia-review.googlesource.com/4909 Reviewed-by: Mike Reed <reed@google.com> Reviewed-by: Leon Scroggins <scroggo@google.com> Reviewed-on: https://skia-review.googlesource.com/5186 Commit-Queue: Hal Canary <halcanary@google.com> Reviewed-by: Hal Canary <halcanary@google.com>
124 lines
3.9 KiB
C++
124 lines
3.9 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "Resources.h"
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#include "SkCanvas.h"
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#include "SkData.h"
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#include "SkImageEncoderPriv.h"
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#include "SkUnPreMultiply.h"
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namespace skiagm {
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static void make_opaque_256(SkBitmap* bitmap) {
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GetResourceAsBitmap("mandrill_256.png", bitmap);
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}
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static void make_premul_256(SkBitmap* bitmap) {
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SkBitmap tmp;
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GetResourceAsBitmap("yellow_rose.png", &tmp);
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tmp.extractSubset(bitmap, SkIRect::MakeWH(256, 256));
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bitmap->lockPixels();
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}
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static void make_unpremul_256(SkBitmap* bitmap) {
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make_premul_256(bitmap);
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for (int y = 0; y < bitmap->height(); y++) {
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for (int x = 0; x < bitmap->width(); x++) {
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SkPMColor* pixel = bitmap->getAddr32(x, y);
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*pixel = SkUnPreMultiply::UnPreMultiplyPreservingByteOrder(*pixel);
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}
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}
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bitmap->setAlphaType(kUnpremul_SkAlphaType);
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}
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static SkImageEncoder* make_encoder(SkEncodedImageFormat type) {
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#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
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return CreateImageEncoder_CG((SkImageEncoder::Type)type);
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#elif defined(SK_BUILD_FOR_WIN)
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return CreateImageEncoder_WIC((SkImageEncoder::Type)type);
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#else
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switch (type) {
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case SkEncodedImageFormat::kPNG:
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return CreatePNGImageEncoder();
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case SkEncodedImageFormat::kJPEG:
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return CreateJPEGImageEncoder();
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case SkEncodedImageFormat::kWEBP:
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return CreateWEBPImageEncoder();
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default:
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SkASSERT(false);
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return nullptr;
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}
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#endif
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}
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#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
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static SkEncodedImageFormat kTypes[] {
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SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kJPEG, SkEncodedImageFormat::kGIF,
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SkEncodedImageFormat::kBMP, SkEncodedImageFormat::kICO,
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};
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#elif defined(SK_BUILD_FOR_WIN)
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// Use PNG multiple times because our WIC encoder does not support GIF, BMP, or ICO.
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static SkEncodedImageFormat kTypes[] {
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SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kJPEG, SkEncodedImageFormat::kPNG,
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SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kPNG,
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};
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#else
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// Use WEBP in place of GIF. Use PNG two extra times. We don't support GIF, BMP, or ICO.
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static SkEncodedImageFormat kTypes[] {
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SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kJPEG, SkEncodedImageFormat::kWEBP,
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SkEncodedImageFormat::kPNG, SkEncodedImageFormat::kPNG,
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};
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#endif
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static sk_sp<SkData> encode_data(std::unique_ptr<SkImageEncoder>& encoder, const SkBitmap& src) {
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SkDynamicMemoryWStream buffer;
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return encoder->encodeStream(&buffer, src, 100) ? buffer.detachAsData() : nullptr;
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}
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class EncodePlatformGM : public GM {
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public:
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EncodePlatformGM() {}
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protected:
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SkString onShortName() override {
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return SkString("encode-platform");
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}
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SkISize onISize() override {
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return SkISize::Make(256 * SK_ARRAY_COUNT(kTypes), 256 * 3);
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}
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void onDraw(SkCanvas* canvas) override {
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SkBitmap opaqueBm, premulBm, unpremulBm;
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make_opaque_256(&opaqueBm);
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make_premul_256(&premulBm);
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make_unpremul_256(&unpremulBm);
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for (SkEncodedImageFormat type : kTypes) {
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std::unique_ptr<SkImageEncoder> encoder(make_encoder(type));
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auto opaqueImage = SkImage::MakeFromEncoded(encode_data(encoder, opaqueBm));
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auto premulImage = SkImage::MakeFromEncoded(encode_data(encoder, premulBm));
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auto unpremulImage = SkImage::MakeFromEncoded(encode_data(encoder, unpremulBm));
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canvas->drawImage(opaqueImage.get(), 0.0f, 0.0f);
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canvas->drawImage(premulImage.get(), 0.0f, 256.0f);
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canvas->drawImage(unpremulImage.get(), 0.0f, 512.0f);
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canvas->translate(256.0f, 0.0f);
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}
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}
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private:
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typedef GM INHERITED;
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};
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DEF_GM( return new EncodePlatformGM; )
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}
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