mozilla
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moz-skia
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moz-skia/tests/CachedDecodingPixelRefTest.cpp

324 строки
12 KiB
C++
Исходник Ответственный История

/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBitmap.h"
#include "SkCachingPixelRef.h"
#include "SkCanvas.h"
#include "SkData.h"
#include "SkDecodingImageGenerator.h"
#include "SkDiscardableMemoryPool.h"
#include "SkImageDecoder.h"
#include "SkScaledImageCache.h"
#include "SkStream.h"
#include "SkUtils.h"
#include "Test.h"
/**
* Fill this bitmap with some color.
*/
static void make_test_image(SkBitmap* bm) {
static const int W = 50, H = 50;
static const SkBitmap::Config config = SkBitmap::kARGB_8888_Config;
bm->setConfig(config, W, H);
bm->allocPixels();
bm->eraseColor(SK_ColorBLACK);
SkCanvas canvas(*bm);
SkPaint paint;
paint.setColor(SK_ColorBLUE);
canvas.drawRectCoords(0, 0, SkIntToScalar(W/2),
SkIntToScalar(H/2), paint);
paint.setColor(SK_ColorWHITE);
canvas.drawRectCoords(SkIntToScalar(W/2), SkIntToScalar(H/2),
SkIntToScalar(W), SkIntToScalar(H), paint);
}
/**
* encode this bitmap into some data via SkImageEncoder
*/
static SkData* create_data_from_bitmap(const SkBitmap& bm,
SkImageEncoder::Type type) {
SkDynamicMemoryWStream stream;
if (SkImageEncoder::EncodeStream(&stream, bm, type, 100)) {
return stream.copyToData();
}
return NULL;
}
////////////////////////////////////////////////////////////////////////////////
static void compare_bitmaps(skiatest::Reporter* reporter,
const SkBitmap& b1, const SkBitmap& b2,
bool pixelPerfect = true) {
REPORTER_ASSERT(reporter, b1.empty() == b2.empty());
REPORTER_ASSERT(reporter, b1.width() == b2.width());
REPORTER_ASSERT(reporter, b1.height() == b2.height());
REPORTER_ASSERT(reporter, b1.isNull() == b2.isNull());
SkAutoLockPixels autoLockPixels1(b1);
SkAutoLockPixels autoLockPixels2(b2);
REPORTER_ASSERT(reporter, b1.isNull() == b2.isNull());
if (b1.isNull() || b1.empty()) {
return;
}
REPORTER_ASSERT(reporter, NULL != b1.getPixels());
REPORTER_ASSERT(reporter, NULL != b2.getPixels());
if ((!(b1.getPixels())) || (!(b2.getPixels()))) {
return;
}
if ((b1.width() != b2.width()) ||
(b1.height() != b2.height())) {
return;
}
if (!pixelPerfect) {
return;
}
int pixelErrors = 0;
for (int y = 0; y < b2.height(); ++y) {
for (int x = 0; x < b2.width(); ++x) {
if (b1.getColor(x, y) != b2.getColor(x, y)) {
++pixelErrors;
}
}
}
REPORTER_ASSERT(reporter, 0 == pixelErrors);
}
typedef bool (*InstallEncoded)(SkData* encoded, SkBitmap* dst);
/**
This function tests three differently encoded images against the
original bitmap */
static void test_three_encodings(skiatest::Reporter* reporter,
InstallEncoded install) {
SkBitmap original;
make_test_image(&original);
REPORTER_ASSERT(reporter, !original.empty());
REPORTER_ASSERT(reporter, !original.isNull());
if (original.empty() || original.isNull()) {
return;
}
static const SkImageEncoder::Type types[] = {
SkImageEncoder::kPNG_Type,
SkImageEncoder::kJPEG_Type,
SkImageEncoder::kWEBP_Type
};
for (size_t i = 0; i < SK_ARRAY_COUNT(types); i++) {
SkImageEncoder::Type type = types[i];
SkAutoDataUnref encoded(create_data_from_bitmap(original, type));
REPORTER_ASSERT(reporter, encoded.get() != NULL);
if (NULL == encoded.get()) {
continue;
}
SkBitmap lazy;
bool installSuccess = install(encoded.get(), &lazy);
REPORTER_ASSERT(reporter, installSuccess);
if (!installSuccess) {
continue;
}
REPORTER_ASSERT(reporter, NULL == lazy.getPixels());
{
SkAutoLockPixels autoLockPixels(lazy); // now pixels are good.
REPORTER_ASSERT(reporter, NULL != lazy.getPixels());
if (NULL == lazy.getPixels()) {
continue;
}
}
// pixels should be gone!
REPORTER_ASSERT(reporter, NULL == lazy.getPixels());
{
SkAutoLockPixels autoLockPixels(lazy); // now pixels are good.
REPORTER_ASSERT(reporter, NULL != lazy.getPixels());
if (NULL == lazy.getPixels()) {
continue;
}
}
bool comparePixels = (SkImageEncoder::kPNG_Type == type);
compare_bitmaps(reporter, original, lazy, comparePixels);
}
}
////////////////////////////////////////////////////////////////////////////////
static bool install_skCachingPixelRef(SkData* encoded, SkBitmap* dst) {
return SkCachingPixelRef::Install(
SkDecodingImageGenerator::Create(
encoded, SkDecodingImageGenerator::Options()), dst);
}
static bool install_skDiscardablePixelRef(SkData* encoded, SkBitmap* dst) {
// Use system-default discardable memory.
return SkInstallDiscardablePixelRef(
SkDecodingImageGenerator::Create(
encoded, SkDecodingImageGenerator::Options()), dst, NULL);
}
////////////////////////////////////////////////////////////////////////////////
/**
* This checks to see that a SkCachingPixelRef and a
* SkDiscardablePixelRef works as advertised with a
* SkDecodingImageGenerator.
*/
DEF_TEST(DecodingImageGenerator, reporter) {
test_three_encodings(reporter, install_skCachingPixelRef);
test_three_encodings(reporter, install_skDiscardablePixelRef);
}
class TestImageGenerator : public SkImageGenerator {
public:
enum TestType {
kFailGetInfo_TestType,
kFailGetPixels_TestType,
kSucceedGetPixels_TestType,
kLast_TestType = kSucceedGetPixels_TestType
};
static int Width() { return 10; }
static int Height() { return 10; }
static SkColor Color() { return SK_ColorCYAN; }
TestImageGenerator(TestType type, skiatest::Reporter* reporter)
: fType(type), fReporter(reporter) {
SkASSERT((fType <= kLast_TestType) && (fType >= 0));
}
virtual ~TestImageGenerator() { }
virtual bool getInfo(SkImageInfo* info) SK_OVERRIDE {
REPORTER_ASSERT(fReporter, NULL != info);
if ((NULL == info) || (kFailGetInfo_TestType == fType)) {
return false;
}
info->fWidth = TestImageGenerator::Width();
info->fHeight = TestImageGenerator::Height();
info->fColorType = kN32_SkColorType;
info->fAlphaType = kOpaque_SkAlphaType;
return true;
}
virtual bool getPixels(const SkImageInfo& info,
void* pixels,
size_t rowBytes) SK_OVERRIDE {
REPORTER_ASSERT(fReporter, pixels != NULL);
size_t minRowBytes
= static_cast<size_t>(info.fWidth * info.bytesPerPixel());
REPORTER_ASSERT(fReporter, rowBytes >= minRowBytes);
if ((NULL == pixels)
|| (fType != kSucceedGetPixels_TestType)
|| (info.fColorType != kN32_SkColorType)) {
return false;
}
char* bytePtr = static_cast<char*>(pixels);
for (int y = 0; y < info.fHeight; ++y) {
sk_memset32(reinterpret_cast<SkColor*>(bytePtr),
TestImageGenerator::Color(), info.fWidth);
bytePtr += rowBytes;
}
return true;
}
private:
const TestType fType;
skiatest::Reporter* const fReporter;
};
static void check_test_image_generator_bitmap(skiatest::Reporter* reporter,
const SkBitmap& bm) {
REPORTER_ASSERT(reporter, TestImageGenerator::Width() == bm.width());
REPORTER_ASSERT(reporter, TestImageGenerator::Height() == bm.height());
SkAutoLockPixels autoLockPixels(bm);
REPORTER_ASSERT(reporter, NULL != bm.getPixels());
if (NULL == bm.getPixels()) {
return;
}
int errors = 0;
for (int y = 0; y < bm.height(); ++y) {
for (int x = 0; x < bm.width(); ++x) {
if (TestImageGenerator::Color() != *bm.getAddr32(x, y)) {
++errors;
}
}
}
REPORTER_ASSERT(reporter, 0 == errors);
}
enum PixelRefType {
kSkCaching_PixelRefType,
kSkDiscardable_PixelRefType,
kLast_PixelRefType = kSkDiscardable_PixelRefType
};
static void check_pixelref(TestImageGenerator::TestType type,
skiatest::Reporter* reporter,
PixelRefType pixelRefType,
SkDiscardableMemory::Factory* factory) {
SkASSERT((pixelRefType >= 0) && (pixelRefType <= kLast_PixelRefType));
SkAutoTDelete<SkImageGenerator> gen(SkNEW_ARGS(TestImageGenerator,
(type, reporter)));
REPORTER_ASSERT(reporter, gen.get() != NULL);
SkBitmap lazy;
bool success;
if (kSkCaching_PixelRefType == pixelRefType) {
// Ignore factory; use global SkScaledImageCache.
success = SkCachingPixelRef::Install(gen.detach(), &lazy);
} else {
success = SkInstallDiscardablePixelRef(gen.detach(), &lazy, factory);
}
REPORTER_ASSERT(reporter, success
== (TestImageGenerator::kFailGetInfo_TestType != type));
if (TestImageGenerator::kSucceedGetPixels_TestType == type) {
check_test_image_generator_bitmap(reporter, lazy);
} else if (TestImageGenerator::kFailGetPixels_TestType == type) {
SkAutoLockPixels autoLockPixels(lazy);
REPORTER_ASSERT(reporter, NULL == lazy.getPixels());
}
}
// new/lock/delete is an odd pattern for a pixelref, but it needs to not assert
static void test_newlockdelete(skiatest::Reporter* reporter) {
SkBitmap bm;
SkImageGenerator* ig = new TestImageGenerator(
TestImageGenerator::kSucceedGetPixels_TestType, reporter);
SkInstallDiscardablePixelRef(ig, &bm, NULL);
bm.pixelRef()->lockPixels();
}
/**
* This tests the basic functionality of SkDiscardablePixelRef with a
* basic SkImageGenerator implementation and several
* SkDiscardableMemory::Factory choices.
*/
DEF_TEST(DiscardableAndCachingPixelRef, reporter) {
test_newlockdelete(reporter);
check_pixelref(TestImageGenerator::kFailGetInfo_TestType,
reporter, kSkCaching_PixelRefType, NULL);
check_pixelref(TestImageGenerator::kFailGetPixels_TestType,
reporter, kSkCaching_PixelRefType, NULL);
check_pixelref(TestImageGenerator::kSucceedGetPixels_TestType,
reporter, kSkCaching_PixelRefType, NULL);
check_pixelref(TestImageGenerator::kFailGetInfo_TestType,
reporter, kSkDiscardable_PixelRefType, NULL);
check_pixelref(TestImageGenerator::kFailGetPixels_TestType,
reporter, kSkDiscardable_PixelRefType, NULL);
check_pixelref(TestImageGenerator::kSucceedGetPixels_TestType,
reporter, kSkDiscardable_PixelRefType, NULL);
SkAutoTUnref<SkDiscardableMemoryPool> pool(
SkDiscardableMemoryPool::Create(1, NULL));
REPORTER_ASSERT(reporter, 0 == pool->getRAMUsed());
check_pixelref(TestImageGenerator::kFailGetPixels_TestType,
reporter, kSkDiscardable_PixelRefType, pool);
REPORTER_ASSERT(reporter, 0 == pool->getRAMUsed());
check_pixelref(TestImageGenerator::kSucceedGetPixels_TestType,
reporter, kSkDiscardable_PixelRefType, pool);
REPORTER_ASSERT(reporter, 0 == pool->getRAMUsed());
SkDiscardableMemoryPool* globalPool = SkGetGlobalDiscardableMemoryPool();
// Only acts differently from NULL on a platform that has a
// default discardable memory implementation that differs from the
// global DM pool.
check_pixelref(TestImageGenerator::kFailGetPixels_TestType,
reporter, kSkDiscardable_PixelRefType, globalPool);
check_pixelref(TestImageGenerator::kSucceedGetPixels_TestType,
reporter, kSkDiscardable_PixelRefType, globalPool);
}
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