18e9ba1edd
... and a few more methods to make it possible to write the new test. Bug: oss-fuzz:6606 Change-Id: Ie8dd221059579248405f165a93c324c8ba518fd4 Reviewed-on: https://skia-review.googlesource.com/112400 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Mike Klein <mtklein@chromium.org>
260 lines
8.9 KiB
C++
260 lines
8.9 KiB
C++
/*
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* Copyright 2013 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 "SkBitmap.h"
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#include "SkMallocPixelRef.h"
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#include "SkRandom.h"
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#include "Test.h"
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#include "sk_tool_utils.h"
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static void test_peekpixels(skiatest::Reporter* reporter) {
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const SkImageInfo info = SkImageInfo::MakeN32Premul(10, 10);
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SkPixmap pmap;
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SkBitmap bm;
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// empty should return false
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REPORTER_ASSERT(reporter, !bm.peekPixels(nullptr));
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REPORTER_ASSERT(reporter, !bm.peekPixels(&pmap));
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// no pixels should return false
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bm.setInfo(SkImageInfo::MakeN32Premul(10, 10));
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REPORTER_ASSERT(reporter, !bm.peekPixels(nullptr));
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REPORTER_ASSERT(reporter, !bm.peekPixels(&pmap));
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// real pixels should return true
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bm.allocPixels(info);
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REPORTER_ASSERT(reporter, bm.peekPixels(nullptr));
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REPORTER_ASSERT(reporter, bm.peekPixels(&pmap));
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REPORTER_ASSERT(reporter, pmap.info() == bm.info());
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REPORTER_ASSERT(reporter, pmap.addr() == bm.getPixels());
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REPORTER_ASSERT(reporter, pmap.rowBytes() == bm.rowBytes());
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}
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// https://code.google.com/p/chromium/issues/detail?id=446164
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static void test_bigalloc(skiatest::Reporter* reporter) {
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const int width = 0x40000001;
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const int height = 0x00000096;
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const SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
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SkBitmap bm;
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REPORTER_ASSERT(reporter, !bm.tryAllocPixels(info));
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sk_sp<SkPixelRef> pr = SkMallocPixelRef::MakeAllocate(info, info.minRowBytes());
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REPORTER_ASSERT(reporter, !pr);
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}
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static void test_allocpixels(skiatest::Reporter* reporter) {
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const int width = 10;
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const int height = 10;
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const SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
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const size_t explicitRowBytes = info.minRowBytes() + 24;
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SkBitmap bm;
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bm.setInfo(info);
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REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes());
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bm.allocPixels();
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REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes());
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bm.reset();
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bm.allocPixels(info);
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REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes());
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bm.setInfo(info, explicitRowBytes);
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REPORTER_ASSERT(reporter, explicitRowBytes == bm.rowBytes());
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bm.allocPixels();
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REPORTER_ASSERT(reporter, explicitRowBytes == bm.rowBytes());
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bm.reset();
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bm.allocPixels(info, explicitRowBytes);
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REPORTER_ASSERT(reporter, explicitRowBytes == bm.rowBytes());
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bm.reset();
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bm.setInfo(info, 0);
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REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes());
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bm.reset();
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bm.allocPixels(info, 0);
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REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes());
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bm.reset();
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bool success = bm.setInfo(info, info.minRowBytes() - 1); // invalid for 32bit
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REPORTER_ASSERT(reporter, !success);
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REPORTER_ASSERT(reporter, bm.isNull());
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}
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static void test_bigwidth(skiatest::Reporter* reporter) {
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SkBitmap bm;
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int width = 1 << 29; // *4 will be the high-bit of 32bit int
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SkImageInfo info = SkImageInfo::MakeA8(width, 1);
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REPORTER_ASSERT(reporter, bm.setInfo(info));
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REPORTER_ASSERT(reporter, bm.setInfo(info.makeColorType(kRGB_565_SkColorType)));
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// for a 4-byte config, this width will compute a rowbytes of 0x80000000,
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// which does not fit in a int32_t. setConfig should detect this, and fail.
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// TODO: perhaps skia can relax this, and only require that rowBytes fit
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// in a uint32_t (or larger), but for now this is the constraint.
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REPORTER_ASSERT(reporter, !bm.setInfo(info.makeColorType(kN32_SkColorType)));
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}
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/**
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* This test contains basic sanity checks concerning bitmaps.
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*/
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DEF_TEST(Bitmap, reporter) {
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// Zero-sized bitmaps are allowed
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for (int width = 0; width < 2; ++width) {
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for (int height = 0; height < 2; ++height) {
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SkBitmap bm;
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bool setConf = bm.setInfo(SkImageInfo::MakeN32Premul(width, height));
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REPORTER_ASSERT(reporter, setConf);
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if (setConf) {
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bm.allocPixels();
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}
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REPORTER_ASSERT(reporter, SkToBool(width & height) != bm.empty());
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}
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}
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test_bigwidth(reporter);
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test_allocpixels(reporter);
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test_bigalloc(reporter);
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test_peekpixels(reporter);
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}
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/**
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* This test checks that getColor works for both swizzles.
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*/
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DEF_TEST(Bitmap_getColor_Swizzle, r) {
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SkBitmap source;
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source.allocN32Pixels(1,1);
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source.eraseColor(SK_ColorRED);
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SkColorType colorTypes[] = {
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kRGBA_8888_SkColorType,
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kBGRA_8888_SkColorType,
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};
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for (SkColorType ct : colorTypes) {
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SkBitmap copy;
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if (!sk_tool_utils::copy_to(©, ct, source)) {
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ERRORF(r, "SkBitmap::copy failed %d", (int)ct);
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continue;
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}
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REPORTER_ASSERT(r, source.getColor(0, 0) == copy.getColor(0, 0));
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}
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}
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static void test_erasecolor_premul(skiatest::Reporter* reporter, SkColorType ct, SkColor input,
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SkColor expected) {
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SkBitmap bm;
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bm.allocPixels(SkImageInfo::Make(1, 1, ct, kPremul_SkAlphaType));
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bm.eraseColor(input);
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INFOF(reporter, "expected: %x actual: %x\n", expected, bm.getColor(0, 0));
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REPORTER_ASSERT(reporter, bm.getColor(0, 0) == expected);
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}
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/**
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* This test checks that eraseColor premultiplies the color correctly.
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*/
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DEF_TEST(Bitmap_eraseColor_Premul, r) {
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SkColor color = 0x80FF0080;
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test_erasecolor_premul(r, kAlpha_8_SkColorType, color, 0x80000000);
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test_erasecolor_premul(r, kRGB_565_SkColorType, color, 0xFF840042);
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test_erasecolor_premul(r, kARGB_4444_SkColorType, color, 0x88FF0080);
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test_erasecolor_premul(r, kRGBA_8888_SkColorType, color, color);
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test_erasecolor_premul(r, kBGRA_8888_SkColorType, color, color);
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}
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// Test that SkBitmap::ComputeOpaque() is correct for various colortypes.
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DEF_TEST(Bitmap_compute_is_opaque, r) {
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struct {
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SkColorType fCT;
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SkAlphaType fAT;
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} types[] = {
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{ kGray_8_SkColorType, kOpaque_SkAlphaType },
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{ kAlpha_8_SkColorType, kPremul_SkAlphaType },
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{ kARGB_4444_SkColorType, kPremul_SkAlphaType },
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{ kRGB_565_SkColorType, kOpaque_SkAlphaType },
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{ kBGRA_8888_SkColorType, kPremul_SkAlphaType },
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{ kRGBA_8888_SkColorType, kPremul_SkAlphaType },
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{ kRGBA_F16_SkColorType, kPremul_SkAlphaType },
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};
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for (auto type : types) {
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SkBitmap bm;
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REPORTER_ASSERT(r, !SkBitmap::ComputeIsOpaque(bm));
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bm.allocPixels(SkImageInfo::Make(13, 17, type.fCT, type.fAT));
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bm.eraseColor(SkColorSetARGB(255, 10, 20, 30));
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REPORTER_ASSERT(r, SkBitmap::ComputeIsOpaque(bm));
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bm.eraseColor(SkColorSetARGB(128, 255, 255, 255));
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bool isOpaque = SkBitmap::ComputeIsOpaque(bm);
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bool shouldBeOpaque = (type.fAT == kOpaque_SkAlphaType);
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REPORTER_ASSERT(r, isOpaque == shouldBeOpaque);
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}
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}
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// Test that erase+getColor round trips with RGBA_F16 pixels.
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DEF_TEST(Bitmap_erase_f16_erase_getColor, r) {
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SkRandom random;
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SkPixmap pm;
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SkBitmap bm;
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bm.allocPixels(SkImageInfo::Make(1, 1, kRGBA_F16_SkColorType, kPremul_SkAlphaType));
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REPORTER_ASSERT(r, bm.peekPixels(&pm));
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for (unsigned i = 0; i < 0x100; ++i) {
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// Test all possible values of blue component.
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SkColor color1 = (SkColor)((random.nextU() & 0xFFFFFF00) | i);
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// Test all possible values of alpha component.
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SkColor color2 = (SkColor)((random.nextU() & 0x00FFFFFF) | (i << 24));
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for (SkColor color : {color1, color2}) {
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pm.erase(color);
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if (SkColorGetA(color) != 0) {
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REPORTER_ASSERT(r, color == pm.getColor(0, 0));
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} else {
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REPORTER_ASSERT(r, 0 == SkColorGetA(pm.getColor(0, 0)));
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}
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}
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}
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}
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// Make sure that the bitmap remains valid when pixelref is removed.
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DEF_TEST(Bitmap_clear_pixelref_keep_info, r) {
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SkBitmap bm;
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bm.allocPixels(SkImageInfo::MakeN32Premul(100,100));
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bm.setPixelRef(nullptr, 0, 0);
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SkDEBUGCODE(bm.validate();)
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}
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// At the time of writing, SkBitmap::erase() works when the color is zero for all formats,
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// but some formats failed when the color is non-zero!
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DEF_TEST(Bitmap_erase, r) {
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SkColorType colorTypes[] = {
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kRGB_565_SkColorType,
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kARGB_4444_SkColorType,
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kRGB_888x_SkColorType,
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kRGBA_8888_SkColorType,
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kBGRA_8888_SkColorType,
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kRGB_101010x_SkColorType,
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kRGBA_1010102_SkColorType,
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};
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for (SkColorType ct : colorTypes) {
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SkImageInfo info = SkImageInfo::Make(1,1, (SkColorType)ct, kPremul_SkAlphaType);
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SkBitmap bm;
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bm.allocPixels(info);
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bm.eraseColor(0x00000000);
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if (SkColorTypeIsAlwaysOpaque(ct)) {
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REPORTER_ASSERT(r, bm.getColor(0,0) == 0xff000000);
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} else {
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REPORTER_ASSERT(r, bm.getColor(0,0) == 0x00000000);
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}
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bm.eraseColor(0xaabbccdd);
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REPORTER_ASSERT(r, bm.getColor(0,0) != 0xff000000);
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REPORTER_ASSERT(r, bm.getColor(0,0) != 0x00000000);
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}
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}
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