13f48dc85a
Trying to evolve this interface so it can - support rich set of backend-encoders (including ones like ETC1 that can cheaply convert to KXT - allow for encoding images as well as bitmaps (e.g. for picture serialization) - perhaps replace SkImageEncoder as an API (assuming we create a factory that returns a serializer given a format) BUG=skia: Review URL: https://codereview.chromium.org/1373683003
348 lines
12 KiB
C++
348 lines
12 KiB
C++
/*
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* Copyright 2015 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 "SkCanvas.h"
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#include "SkData.h"
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#include "SkDevice.h"
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#include "SkImageEncoder.h"
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#include "SkImage_Base.h"
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#include "SkPicture.h"
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#include "SkPictureRecorder.h"
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#include "SkPixelSerializer.h"
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#include "SkRRect.h"
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#include "SkStream.h"
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#include "SkSurface.h"
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#include "SkUtils.h"
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#include "Test.h"
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#if SK_SUPPORT_GPU
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#include "GrContextFactory.h"
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#include "GrTest.h"
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#include "gl/GrGLInterface.h"
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#include "gl/GrGLUtil.h"
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#else
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class GrContextFactory;
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class GrContext;
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#endif
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static void assert_equal(skiatest::Reporter* reporter, SkImage* a, const SkIRect* subsetA,
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SkImage* b) {
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const int widthA = subsetA ? subsetA->width() : a->width();
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const int heightA = subsetA ? subsetA->height() : a->height();
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REPORTER_ASSERT(reporter, widthA == b->width());
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REPORTER_ASSERT(reporter, heightA == b->height());
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#if 0
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// see skbug.com/3965
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bool AO = a->isOpaque();
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bool BO = b->isOpaque();
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REPORTER_ASSERT(reporter, AO == BO);
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#endif
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SkImageInfo info = SkImageInfo::MakeN32(widthA, heightA,
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a->isOpaque() ? kOpaque_SkAlphaType : kPremul_SkAlphaType);
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SkAutoPixmapStorage pmapA, pmapB;
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pmapA.alloc(info);
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pmapB.alloc(info);
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const int srcX = subsetA ? subsetA->x() : 0;
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const int srcY = subsetA ? subsetA->y() : 0;
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REPORTER_ASSERT(reporter, a->readPixels(pmapA, srcX, srcY));
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REPORTER_ASSERT(reporter, b->readPixels(pmapB, 0, 0));
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const size_t widthBytes = widthA * info.bytesPerPixel();
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for (int y = 0; y < heightA; ++y) {
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REPORTER_ASSERT(reporter, !memcmp(pmapA.addr32(0, y), pmapB.addr32(0, y), widthBytes));
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}
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}
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static SkImage* make_image(GrContext* ctx, int w, int h, const SkIRect& ir) {
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const SkImageInfo info = SkImageInfo::MakeN32(w, h, kOpaque_SkAlphaType);
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SkAutoTUnref<SkSurface> surface(ctx ?
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SkSurface::NewRenderTarget(ctx, SkSurface::kNo_Budgeted, info) :
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SkSurface::NewRaster(info));
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SkCanvas* canvas = surface->getCanvas();
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canvas->clear(SK_ColorWHITE);
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SkPaint paint;
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paint.setColor(SK_ColorBLACK);
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canvas->drawRect(SkRect::Make(ir), paint);
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return surface->newImageSnapshot();
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}
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static void test_encode(skiatest::Reporter* reporter, GrContext* ctx) {
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const SkIRect ir = SkIRect::MakeXYWH(5, 5, 10, 10);
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SkAutoTUnref<SkImage> orig(make_image(ctx, 20, 20, ir));
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SkAutoTUnref<SkData> origEncoded(orig->encode());
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REPORTER_ASSERT(reporter, origEncoded);
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REPORTER_ASSERT(reporter, origEncoded->size() > 0);
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SkAutoTUnref<SkImage> decoded(SkImage::NewFromEncoded(origEncoded));
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REPORTER_ASSERT(reporter, decoded);
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assert_equal(reporter, orig, nullptr, decoded);
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// Now see if we can instantiate an image from a subset of the surface/origEncoded
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decoded.reset(SkImage::NewFromEncoded(origEncoded, &ir));
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REPORTER_ASSERT(reporter, decoded);
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assert_equal(reporter, orig, &ir, decoded);
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}
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DEF_TEST(Image_Encode_Cpu, reporter) {
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test_encode(reporter, nullptr);
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}
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#if SK_SUPPORT_GPU
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DEF_GPUTEST(Image_Encode_Gpu, reporter, factory) {
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GrContext* ctx = factory->get(GrContextFactory::kNative_GLContextType);
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if (!ctx) {
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REPORTER_ASSERT(reporter, false);
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return;
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}
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test_encode(reporter, ctx);
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}
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#endif
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namespace {
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const char* kSerializedData = "serialized";
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class MockSerializer : public SkPixelSerializer {
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public:
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MockSerializer(SkData* (*func)()) : fFunc(func), fDidEncode(false) { }
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bool didEncode() const { return fDidEncode; }
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protected:
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SkData* onReencodeData(SkData*) override {
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return nullptr;
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}
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SkData* onEncodePixels(const SkImageInfo&, const void*, size_t) override {
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fDidEncode = true;
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return fFunc();
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}
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private:
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SkData* (*fFunc)();
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bool fDidEncode;
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typedef SkPixelSerializer INHERITED;
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};
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} // anonymous namespace
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// Test that SkImage encoding observes custom pixel serializers.
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DEF_TEST(Image_Encode_Serializer, reporter) {
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MockSerializer serializer([]() -> SkData* { return SkData::NewWithCString(kSerializedData); });
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const SkIRect ir = SkIRect::MakeXYWH(5, 5, 10, 10);
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SkAutoTUnref<SkImage> image(make_image(nullptr, 20, 20, ir));
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SkAutoTUnref<SkData> encoded(image->encode(&serializer));
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SkAutoTUnref<SkData> reference(SkData::NewWithCString(kSerializedData));
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REPORTER_ASSERT(reporter, serializer.didEncode());
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REPORTER_ASSERT(reporter, encoded);
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REPORTER_ASSERT(reporter, encoded->size() > 0);
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REPORTER_ASSERT(reporter, encoded->equals(reference));
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}
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// Test that image encoding failures do not break picture serialization/deserialization.
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DEF_TEST(Image_Serialize_Encoding_Failure, reporter) {
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SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterN32Premul(100, 100));
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surface->getCanvas()->clear(SK_ColorGREEN);
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SkAutoTUnref<SkImage> image(surface->newImageSnapshot());
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REPORTER_ASSERT(reporter, image);
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SkPictureRecorder recorder;
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SkCanvas* canvas = recorder.beginRecording(100, 100);
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canvas->drawImage(image, 0, 0);
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SkAutoTUnref<SkPicture> picture(recorder.endRecording());
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REPORTER_ASSERT(reporter, picture);
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REPORTER_ASSERT(reporter, picture->approximateOpCount() > 0);
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MockSerializer emptySerializer([]() -> SkData* { return SkData::NewEmpty(); });
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MockSerializer nullSerializer([]() -> SkData* { return nullptr; });
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MockSerializer* serializers[] = { &emptySerializer, &nullSerializer };
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for (size_t i = 0; i < SK_ARRAY_COUNT(serializers); ++i) {
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SkDynamicMemoryWStream wstream;
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REPORTER_ASSERT(reporter, !serializers[i]->didEncode());
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picture->serialize(&wstream, serializers[i]);
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REPORTER_ASSERT(reporter, serializers[i]->didEncode());
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SkAutoTDelete<SkStream> rstream(wstream.detachAsStream());
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SkAutoTUnref<SkPicture> deserialized(SkPicture::CreateFromStream(rstream));
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REPORTER_ASSERT(reporter, deserialized);
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REPORTER_ASSERT(reporter, deserialized->approximateOpCount() > 0);
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}
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}
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DEF_TEST(Image_NewRasterCopy, reporter) {
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const SkPMColor red = SkPackARGB32(0xFF, 0xFF, 0, 0);
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const SkPMColor green = SkPackARGB32(0xFF, 0, 0xFF, 0);
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const SkPMColor blue = SkPackARGB32(0xFF, 0, 0, 0xFF);
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SkPMColor colors[] = { red, green, blue, 0 };
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SkAutoTUnref<SkColorTable> ctable(new SkColorTable(colors, SK_ARRAY_COUNT(colors)));
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// The colortable made a copy, so we can trash the original colors
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memset(colors, 0xFF, sizeof(colors));
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const SkImageInfo srcInfo = SkImageInfo::Make(2, 2, kIndex_8_SkColorType, kPremul_SkAlphaType);
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const size_t srcRowBytes = 2 * sizeof(uint8_t);
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uint8_t indices[] = { 0, 1, 2, 3 };
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SkAutoTUnref<SkImage> image(SkImage::NewRasterCopy(srcInfo, indices, srcRowBytes, ctable));
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// The image made a copy, so we can trash the original indices
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memset(indices, 0xFF, sizeof(indices));
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const SkImageInfo dstInfo = SkImageInfo::MakeN32Premul(2, 2);
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const size_t dstRowBytes = 2 * sizeof(SkPMColor);
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SkPMColor pixels[4];
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memset(pixels, 0xFF, sizeof(pixels)); // init with values we don't expect
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image->readPixels(dstInfo, pixels, dstRowBytes, 0, 0);
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REPORTER_ASSERT(reporter, red == pixels[0]);
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REPORTER_ASSERT(reporter, green == pixels[1]);
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REPORTER_ASSERT(reporter, blue == pixels[2]);
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REPORTER_ASSERT(reporter, 0 == pixels[3]);
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}
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// Test that a draw that only partially covers the drawing surface isn't
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// interpreted as covering the entire drawing surface (i.e., exercise one of the
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// conditions of SkCanvas::wouldOverwriteEntireSurface()).
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DEF_TEST(Image_RetainSnapshot, reporter) {
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const SkPMColor red = SkPackARGB32(0xFF, 0xFF, 0, 0);
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const SkPMColor green = SkPackARGB32(0xFF, 0, 0xFF, 0);
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SkImageInfo info = SkImageInfo::MakeN32Premul(2, 2);
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SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info));
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surface->getCanvas()->clear(0xFF00FF00);
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SkPMColor pixels[4];
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memset(pixels, 0xFF, sizeof(pixels)); // init with values we don't expect
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const SkImageInfo dstInfo = SkImageInfo::MakeN32Premul(2, 2);
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const size_t dstRowBytes = 2 * sizeof(SkPMColor);
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SkAutoTUnref<SkImage> image1(surface->newImageSnapshot());
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REPORTER_ASSERT(reporter, image1->readPixels(dstInfo, pixels, dstRowBytes, 0, 0));
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for (size_t i = 0; i < SK_ARRAY_COUNT(pixels); ++i) {
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REPORTER_ASSERT(reporter, pixels[i] == green);
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}
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SkPaint paint;
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paint.setXfermodeMode(SkXfermode::kSrc_Mode);
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paint.setColor(SK_ColorRED);
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surface->getCanvas()->drawRect(SkRect::MakeXYWH(1, 1, 1, 1), paint);
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SkAutoTUnref<SkImage> image2(surface->newImageSnapshot());
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REPORTER_ASSERT(reporter, image2->readPixels(dstInfo, pixels, dstRowBytes, 0, 0));
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REPORTER_ASSERT(reporter, pixels[0] == green);
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REPORTER_ASSERT(reporter, pixels[1] == green);
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REPORTER_ASSERT(reporter, pixels[2] == green);
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REPORTER_ASSERT(reporter, pixels[3] == red);
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}
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/////////////////////////////////////////////////////////////////////////////////////////////////
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static void make_bitmap_mutable(SkBitmap* bm) {
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bm->allocN32Pixels(10, 10);
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}
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static void make_bitmap_immutable(SkBitmap* bm) {
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bm->allocN32Pixels(10, 10);
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bm->setImmutable();
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}
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DEF_TEST(image_newfrombitmap, reporter) {
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const struct {
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void (*fMakeProc)(SkBitmap*);
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bool fExpectPeekSuccess;
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bool fExpectSharedID;
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bool fExpectLazy;
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} rec[] = {
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{ make_bitmap_mutable, true, false, false },
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{ make_bitmap_immutable, true, true, false },
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};
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for (size_t i = 0; i < SK_ARRAY_COUNT(rec); ++i) {
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SkBitmap bm;
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rec[i].fMakeProc(&bm);
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SkAutoTUnref<SkImage> image(SkImage::NewFromBitmap(bm));
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SkPixmap pmap;
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const bool sharedID = (image->uniqueID() == bm.getGenerationID());
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REPORTER_ASSERT(reporter, sharedID == rec[i].fExpectSharedID);
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const bool peekSuccess = image->peekPixels(&pmap);
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REPORTER_ASSERT(reporter, peekSuccess == rec[i].fExpectPeekSuccess);
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const bool lazy = image->isLazyGenerated();
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REPORTER_ASSERT(reporter, lazy == rec[i].fExpectLazy);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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#if SK_SUPPORT_GPU
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static SkImage* make_gpu_image(GrContext* ctx, const SkImageInfo& info, SkColor color) {
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const SkSurface::Budgeted budgeted = SkSurface::kNo_Budgeted;
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SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTarget(ctx, budgeted, info, 0));
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surface->getCanvas()->drawColor(color);
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return surface->newImageSnapshot();
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}
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#include "SkBitmapCache.h"
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/*
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* This tests the caching (and preemptive purge) of the raster equivalent of a gpu-image.
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* We cache it for performance when drawing into a raster surface.
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*
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* A cleaner test would know if each drawImage call triggered a read-back from the gpu,
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* but we don't have that facility (at the moment) so we use a little internal knowledge
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* of *how* the raster version is cached, and look for that.
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*/
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DEF_GPUTEST(SkImage_Gpu2Cpu, reporter, factory) {
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GrContext* ctx = factory->get(GrContextFactory::kNative_GLContextType);
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if (!ctx) {
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REPORTER_ASSERT(reporter, false);
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return;
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}
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const SkImageInfo info = SkImageInfo::MakeN32Premul(10, 10);
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SkAutoTUnref<SkImage> image(make_gpu_image(ctx, info, SK_ColorRED));
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const uint32_t uniqueID = image->uniqueID();
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SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info));
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// now we can test drawing a gpu-backed image into a cpu-backed surface
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{
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SkBitmap cachedBitmap;
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REPORTER_ASSERT(reporter, !SkBitmapCache::Find(uniqueID, &cachedBitmap));
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}
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surface->getCanvas()->drawImage(image, 0, 0);
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{
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SkBitmap cachedBitmap;
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if (SkBitmapCache::Find(uniqueID, &cachedBitmap)) {
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REPORTER_ASSERT(reporter, cachedBitmap.getGenerationID() == uniqueID);
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REPORTER_ASSERT(reporter, cachedBitmap.isImmutable());
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REPORTER_ASSERT(reporter, cachedBitmap.getPixels());
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} else {
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// unexpected, but not really a bug, since the cache is global and this test may be
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// run w/ other threads competing for its budget.
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SkDebugf("SkImage_Gpu2Cpu : cachedBitmap was already purged\n");
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}
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}
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image.reset(nullptr);
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{
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SkBitmap cachedBitmap;
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REPORTER_ASSERT(reporter, !SkBitmapCache::Find(uniqueID, &cachedBitmap));
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}
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}
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#endif
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