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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkCanvas.h"
#include "SkData.h"
#include "SkDevice.h"
#include "SkImageEncoder.h"
#include "SkImage_Base.h"
#include "SkRRect.h"
#include "SkSurface.h"
#include "SkUtils.h"
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContextFactory.h"
#include "GrTest.h"
#include "gl/GrGLInterface.h"
#include "gl/GrGLUtil.h"
#else
class GrContextFactory;
class GrContext;
#endif
static void assert_equal(skiatest::Reporter* reporter, SkImage* a, const SkIRect* subsetA,
SkImage* b) {
const int widthA = subsetA ? subsetA->width() : a->width();
const int heightA = subsetA ? subsetA->height() : a->height();
REPORTER_ASSERT(reporter, widthA == b->width());
REPORTER_ASSERT(reporter, heightA == b->height());
#if 0
// see skbug.com/3965
bool AO = a->isOpaque();
bool BO = b->isOpaque();
REPORTER_ASSERT(reporter, AO == BO);
#endif
SkImageInfo info = SkImageInfo::MakeN32(widthA, heightA,
a->isOpaque() ? kOpaque_SkAlphaType : kPremul_SkAlphaType);
SkAutoPixmapStorage pmapA, pmapB;
pmapA.alloc(info);
pmapB.alloc(info);
const int srcX = subsetA ? subsetA->x() : 0;
const int srcY = subsetA ? subsetA->y() : 0;
REPORTER_ASSERT(reporter, a->readPixels(pmapA, srcX, srcY));
REPORTER_ASSERT(reporter, b->readPixels(pmapB, 0, 0));
const size_t widthBytes = widthA * info.bytesPerPixel();
for (int y = 0; y < heightA; ++y) {
REPORTER_ASSERT(reporter, !memcmp(pmapA.addr32(0, y), pmapB.addr32(0, y), widthBytes));
}
}
static SkImage* make_image(GrContext* ctx, int w, int h, const SkIRect& ir) {
const SkImageInfo info = SkImageInfo::MakeN32(w, h, kOpaque_SkAlphaType);
SkAutoTUnref<SkSurface> surface(ctx ?
SkSurface::NewRenderTarget(ctx, SkSurface::kNo_Budgeted, info) :
SkSurface::NewRaster(info));
SkCanvas* canvas = surface->getCanvas();
canvas->clear(SK_ColorWHITE);
SkPaint paint;
paint.setColor(SK_ColorBLACK);
canvas->drawRect(SkRect::Make(ir), paint);
return surface->newImageSnapshot();
}
static void test_encode(skiatest::Reporter* reporter, GrContext* ctx) {
const SkIRect ir = SkIRect::MakeXYWH(5, 5, 10, 10);
SkAutoTUnref<SkImage> orig(make_image(ctx, 20, 20, ir));
SkAutoTUnref<SkData> origEncoded(orig->encode());
REPORTER_ASSERT(reporter, origEncoded);
REPORTER_ASSERT(reporter, origEncoded->size() > 0);
SkAutoTUnref<SkImage> decoded(SkImage::NewFromEncoded(origEncoded));
REPORTER_ASSERT(reporter, decoded);
assert_equal(reporter, orig, NULL, decoded);
// Now see if we can instantiate an image from a subset of the surface/origEncoded
decoded.reset(SkImage::NewFromEncoded(origEncoded, &ir));
REPORTER_ASSERT(reporter, decoded);
assert_equal(reporter, orig, &ir, decoded);
}
DEF_TEST(Image_Encode_Cpu, reporter) {
test_encode(reporter, NULL);
}
#if SK_SUPPORT_GPU
DEF_GPUTEST(Image_Encode_Gpu, reporter, factory) {
GrContext* ctx = factory->get(GrContextFactory::kNative_GLContextType);
if (!ctx) {
REPORTER_ASSERT(reporter, false);
return;
}
test_encode(reporter, ctx);
}
#endif
DEF_TEST(Image_NewRasterCopy, reporter) {
const SkPMColor red = SkPackARGB32(0xFF, 0xFF, 0, 0);
const SkPMColor green = SkPackARGB32(0xFF, 0, 0xFF, 0);
const SkPMColor blue = SkPackARGB32(0xFF, 0, 0, 0xFF);
SkPMColor colors[] = { red, green, blue, 0 };
SkAutoTUnref<SkColorTable> ctable(SkNEW_ARGS(SkColorTable, (colors, SK_ARRAY_COUNT(colors))));
// The colortable made a copy, so we can trash the original colors
memset(colors, 0xFF, sizeof(colors));
const SkImageInfo srcInfo = SkImageInfo::Make(2, 2, kIndex_8_SkColorType, kPremul_SkAlphaType);
const size_t srcRowBytes = 2 * sizeof(uint8_t);
uint8_t indices[] = { 0, 1, 2, 3 };
SkAutoTUnref<SkImage> image(SkImage::NewRasterCopy(srcInfo, indices, srcRowBytes, ctable));
// The image made a copy, so we can trash the original indices
memset(indices, 0xFF, sizeof(indices));
const SkImageInfo dstInfo = SkImageInfo::MakeN32Premul(2, 2);
const size_t dstRowBytes = 2 * sizeof(SkPMColor);
SkPMColor pixels[4];
memset(pixels, 0xFF, sizeof(pixels)); // init with values we don't expect
image->readPixels(dstInfo, pixels, dstRowBytes, 0, 0);
REPORTER_ASSERT(reporter, red == pixels[0]);
REPORTER_ASSERT(reporter, green == pixels[1]);
REPORTER_ASSERT(reporter, blue == pixels[2]);
REPORTER_ASSERT(reporter, 0 == pixels[3]);
}
// Test that a draw that only partially covers the drawing surface isn't
// interpreted as covering the entire drawing surface (i.e., exercise one of the
// conditions of SkCanvas::wouldOverwriteEntireSurface()).
DEF_TEST(Image_RetainSnapshot, reporter) {
const SkPMColor red = SkPackARGB32(0xFF, 0xFF, 0, 0);
const SkPMColor green = SkPackARGB32(0xFF, 0, 0xFF, 0);
SkImageInfo info = SkImageInfo::MakeN32Premul(2, 2);
SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info));
surface->getCanvas()->clear(0xFF00FF00);
SkPMColor pixels[4];
memset(pixels, 0xFF, sizeof(pixels)); // init with values we don't expect
const SkImageInfo dstInfo = SkImageInfo::MakeN32Premul(2, 2);
const size_t dstRowBytes = 2 * sizeof(SkPMColor);
SkAutoTUnref<SkImage> image1(surface->newImageSnapshot());
REPORTER_ASSERT(reporter, image1->readPixels(dstInfo, pixels, dstRowBytes, 0, 0));
for (size_t i = 0; i < SK_ARRAY_COUNT(pixels); ++i) {
REPORTER_ASSERT(reporter, pixels[i] == green);
}
SkPaint paint;
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
paint.setColor(SK_ColorRED);
surface->getCanvas()->drawRect(SkRect::MakeXYWH(1, 1, 1, 1), paint);
SkAutoTUnref<SkImage> image2(surface->newImageSnapshot());
REPORTER_ASSERT(reporter, image2->readPixels(dstInfo, pixels, dstRowBytes, 0, 0));
REPORTER_ASSERT(reporter, pixels[0] == green);
REPORTER_ASSERT(reporter, pixels[1] == green);
REPORTER_ASSERT(reporter, pixels[2] == green);
REPORTER_ASSERT(reporter, pixels[3] == red);
}
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