| /* | |
| * 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 "SampleCode.h" | |
| #include "SkAlphaThresholdFilter.h" | |
| #include "SkBitmapSource.h" | |
| #include "SkBlurImageFilter.h" | |
| #include "SkCanvas.h" | |
| #include "SkColorCubeFilter.h" | |
| #include "SkColorFilter.h" | |
| #include "SkColorFilterImageFilter.h" | |
| #include "SkComposeImageFilter.h" | |
| #include "SkData.h" | |
| #include "SkDisplacementMapEffect.h" | |
| #include "SkDropShadowImageFilter.h" | |
| #include "SkFlattenableSerialization.h" | |
| #include "SkLightingImageFilter.h" | |
| #include "SkMagnifierImageFilter.h" | |
| #include "SkMatrixConvolutionImageFilter.h" | |
| #include "SkMergeImageFilter.h" | |
| #include "SkMorphologyImageFilter.h" | |
| #include "SkOffsetImageFilter.h" | |
| #include "SkPerlinNoiseShader.h" | |
| #include "SkPictureImageFilter.h" | |
| #include "SkPictureRecorder.h" | |
| #include "SkPoint3.h" | |
| #include "SkRandom.h" | |
| #include "SkRectShaderImageFilter.h" | |
| #include "SkTestImageFilters.h" | |
| #include "SkTileImageFilter.h" | |
| #include "SkView.h" | |
| #include "SkXfermodeImageFilter.h" | |
| #include <stdio.h> | |
| #include <time.h> | |
| //#define SK_ADD_RANDOM_BIT_FLIPS | |
| //#define SK_FUZZER_IS_VERBOSE | |
| static const uint32_t kSeed = (uint32_t)(time(NULL)); | |
| static SkRandom gRand(kSeed); | |
| static bool return_large = false; | |
| static bool return_undef = false; | |
| static const int kBitmapSize = 24; | |
| static int R(float x) { | |
| return (int)floor(SkScalarToFloat(gRand.nextUScalar1()) * x); | |
| } | |
| #if defined _WIN32 | |
| #pragma warning ( push ) | |
| // we are intentionally causing an overflow here | |
| // (warning C4756: overflow in constant arithmetic) | |
| #pragma warning ( disable : 4756 ) | |
| #endif | |
| static float huge() { | |
| double d = 1e100; | |
| float f = (float)d; | |
| return f; | |
| } | |
| #if defined _WIN32 | |
| #pragma warning ( pop ) | |
| #endif | |
| static float make_number(bool positiveOnly) { | |
| float f = positiveOnly ? 1.0f : 0.0f; | |
| float v = f; | |
| int sel; | |
| if (return_large) sel = R(6); else sel = R(4); | |
| if (!return_undef && sel == 0) sel = 1; | |
| if (R(2) == 1) v = (float)(R(100)+f); else | |
| switch (sel) { | |
| case 0: break; | |
| case 1: v = f; break; | |
| case 2: v = 0.000001f; break; | |
| case 3: v = 10000.0f; break; | |
| case 4: v = 2000000000.0f; break; | |
| case 5: v = huge(); break; | |
| } | |
| if (!positiveOnly && (R(4) == 1)) v = -v; | |
| return v; | |
| } | |
| static SkScalar make_scalar(bool positiveOnly = false) { | |
| return make_number(positiveOnly); | |
| } | |
| static SkRect make_rect() { | |
| return SkRect::MakeWH(SkIntToScalar(R(static_cast<float>(kBitmapSize))), | |
| SkIntToScalar(R(static_cast<float>(kBitmapSize)))); | |
| } | |
| static SkRegion make_region() { | |
| SkIRect iRegion = SkIRect::MakeXYWH(R(static_cast<float>(kBitmapSize)), | |
| R(static_cast<float>(kBitmapSize)), | |
| R(static_cast<float>(kBitmapSize)), | |
| R(static_cast<float>(kBitmapSize))); | |
| return SkRegion(iRegion); | |
| } | |
| static SkMatrix make_matrix() { | |
| SkMatrix m; | |
| for (int i = 0; i < 9; ++i) { | |
| m[i] = make_scalar(); | |
| } | |
| return m; | |
| } | |
| static SkXfermode::Mode make_xfermode() { | |
| return static_cast<SkXfermode::Mode>(R(SkXfermode::kLastMode+1)); | |
| } | |
| static SkColor make_color() { | |
| return (R(2) == 1) ? 0xFFC0F0A0 : 0xFF000090; | |
| } | |
| static SkDropShadowImageFilter::ShadowMode make_shadow_mode() { | |
| return (R(2) == 1) ? SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode : | |
| SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode; | |
| } | |
| static SkPoint3 make_point() { | |
| return SkPoint3::Make(make_scalar(), make_scalar(), make_scalar(true)); | |
| } | |
| static SkDisplacementMapEffect::ChannelSelectorType make_channel_selector_type() { | |
| return static_cast<SkDisplacementMapEffect::ChannelSelectorType>(R(4)+1); | |
| } | |
| static bool valid_for_raster_canvas(const SkImageInfo& info) { | |
| switch (info.colorType()) { | |
| case kAlpha_8_SkColorType: | |
| case kRGB_565_SkColorType: | |
| return true; | |
| case kN32_SkColorType: | |
| return kPremul_SkAlphaType == info.alphaType() || | |
| kOpaque_SkAlphaType == info.alphaType(); | |
| default: | |
| break; | |
| } | |
| return false; | |
| } | |
| static SkColorType rand_colortype() { | |
| return (SkColorType)R(kLastEnum_SkColorType + 1); | |
| } | |
| static void rand_bitmap_for_canvas(SkBitmap* bitmap) { | |
| SkImageInfo info; | |
| do { | |
| info = SkImageInfo::Make(kBitmapSize, kBitmapSize, rand_colortype(), | |
| kPremul_SkAlphaType); | |
| } while (!valid_for_raster_canvas(info) || !bitmap->tryAllocPixels(info)); | |
| } | |
| static void make_g_bitmap(SkBitmap& bitmap) { | |
| rand_bitmap_for_canvas(&bitmap); | |
| SkCanvas canvas(bitmap); | |
| canvas.clear(0x00000000); | |
| SkPaint paint; | |
| paint.setAntiAlias(true); | |
| paint.setColor(0xFF884422); | |
| paint.setTextSize(SkIntToScalar(kBitmapSize/2)); | |
| const char* str = "g"; | |
| canvas.drawText(str, strlen(str), SkIntToScalar(kBitmapSize/8), | |
| SkIntToScalar(kBitmapSize/4), paint); | |
| } | |
| static void make_checkerboard_bitmap(SkBitmap& bitmap) { | |
| rand_bitmap_for_canvas(&bitmap); | |
| SkCanvas canvas(bitmap); | |
| canvas.clear(0x00000000); | |
| SkPaint darkPaint; | |
| darkPaint.setColor(0xFF804020); | |
| SkPaint lightPaint; | |
| lightPaint.setColor(0xFF244484); | |
| const int i = kBitmapSize / 8; | |
| const SkScalar f = SkIntToScalar(i); | |
| for (int y = 0; y < kBitmapSize; y += i) { | |
| for (int x = 0; x < kBitmapSize; x += i) { | |
| canvas.save(); | |
| canvas.translate(SkIntToScalar(x), SkIntToScalar(y)); | |
| canvas.drawRect(SkRect::MakeXYWH(0, 0, f, f), darkPaint); | |
| canvas.drawRect(SkRect::MakeXYWH(f, 0, f, f), lightPaint); | |
| canvas.drawRect(SkRect::MakeXYWH(0, f, f, f), lightPaint); | |
| canvas.drawRect(SkRect::MakeXYWH(f, f, f, f), darkPaint); | |
| canvas.restore(); | |
| } | |
| } | |
| } | |
| static const SkBitmap& make_bitmap() { | |
| static SkBitmap bitmap[2]; | |
| static bool initialized = false; | |
| if (!initialized) { | |
| make_g_bitmap(bitmap[0]); | |
| make_checkerboard_bitmap(bitmap[1]); | |
| initialized = true; | |
| } | |
| return bitmap[R(2)]; | |
| } | |
| static SkData* make_3Dlut(int* cubeDimension, bool invR, bool invG, bool invB) { | |
| int size = 4 << R(5); | |
| SkData* data = SkData::NewUninitialized(sizeof(SkColor) * size * size * size); | |
| SkColor* pixels = (SkColor*)(data->writable_data()); | |
| SkAutoMalloc lutMemory(size); | |
| SkAutoMalloc invLutMemory(size); | |
| uint8_t* lut = (uint8_t*)lutMemory.get(); | |
| uint8_t* invLut = (uint8_t*)invLutMemory.get(); | |
| const int maxIndex = size - 1; | |
| for (int i = 0; i < size; i++) { | |
| lut[i] = (i * 255) / maxIndex; | |
| invLut[i] = ((maxIndex - i) * 255) / maxIndex; | |
| } | |
| for (int r = 0; r < size; ++r) { | |
| for (int g = 0; g < size; ++g) { | |
| for (int b = 0; b < size; ++b) { | |
| pixels[(size * ((size * b) + g)) + r] = SkColorSetARGB(0xFF, | |
| invR ? invLut[r] : lut[r], | |
| invG ? invLut[g] : lut[g], | |
| invB ? invLut[b] : lut[b]); | |
| } | |
| } | |
| } | |
| if (cubeDimension) { | |
| *cubeDimension = size; | |
| } | |
| return data; | |
| } | |
| static void drawSomething(SkCanvas* canvas) { | |
| SkPaint paint; | |
| canvas->save(); | |
| canvas->scale(0.5f, 0.5f); | |
| canvas->drawBitmap(make_bitmap(), 0, 0, NULL); | |
| canvas->restore(); | |
| paint.setAntiAlias(true); | |
| paint.setColor(SK_ColorRED); | |
| canvas->drawCircle(SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/3), paint); | |
| paint.setColor(SK_ColorBLACK); | |
| paint.setTextSize(SkIntToScalar(kBitmapSize/3)); | |
| canvas->drawText("Picture", 7, SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/4), paint); | |
| } | |
| static SkImageFilter* make_image_filter(bool canBeNull = true) { | |
| SkImageFilter* filter = 0; | |
| // Add a 1 in 3 chance to get a NULL input | |
| if (canBeNull && (R(3) == 1)) { return filter; } | |
| enum { ALPHA_THRESHOLD, MERGE, COLOR, LUT3D, BLUR, MAGNIFIER, | |
| DOWN_SAMPLE, XFERMODE, OFFSET, MATRIX, MATRIX_CONVOLUTION, COMPOSE, | |
| DISTANT_LIGHT, POINT_LIGHT, SPOT_LIGHT, NOISE, DROP_SHADOW, | |
| MORPHOLOGY, BITMAP, DISPLACE, TILE, PICTURE, NUM_FILTERS }; | |
| switch (R(NUM_FILTERS)) { | |
| case ALPHA_THRESHOLD: | |
| filter = SkAlphaThresholdFilter::Create(make_region(), make_scalar(), make_scalar()); | |
| break; | |
| case MERGE: | |
| filter = SkMergeImageFilter::Create(make_image_filter(), make_image_filter(), make_xfermode()); | |
| break; | |
| case COLOR: | |
| { | |
| SkAutoTUnref<SkColorFilter> cf((R(2) == 1) ? | |
| SkColorFilter::CreateModeFilter(make_color(), make_xfermode()) : | |
| SkColorFilter::CreateLightingFilter(make_color(), make_color())); | |
| filter = cf.get() ? SkColorFilterImageFilter::Create(cf, make_image_filter()) : 0; | |
| } | |
| break; | |
| case LUT3D: | |
| { | |
| int cubeDimension; | |
| SkAutoDataUnref lut3D(make_3Dlut(&cubeDimension, (R(2) == 1), (R(2) == 1), (R(2) == 1))); | |
| SkAutoTUnref<SkColorFilter> cf(SkColorCubeFilter::Create(lut3D, cubeDimension)); | |
| filter = cf.get() ? SkColorFilterImageFilter::Create(cf, make_image_filter()) : 0; | |
| } | |
| break; | |
| case BLUR: | |
| filter = SkBlurImageFilter::Create(make_scalar(true), make_scalar(true), make_image_filter()); | |
| break; | |
| case MAGNIFIER: | |
| filter = SkMagnifierImageFilter::Create(make_rect(), make_scalar(true)); | |
| break; | |
| case DOWN_SAMPLE: | |
| filter = SkDownSampleImageFilter::Create(make_scalar()); | |
| break; | |
| case XFERMODE: | |
| { | |
| SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(make_xfermode())); | |
| filter = SkXfermodeImageFilter::Create(mode, make_image_filter(), make_image_filter()); | |
| } | |
| break; | |
| case OFFSET: | |
| filter = SkOffsetImageFilter::Create(make_scalar(), make_scalar(), make_image_filter()); | |
| break; | |
| case MATRIX: | |
| filter = SkImageFilter::CreateMatrixFilter(make_matrix(), | |
| (SkFilterQuality)R(4), | |
| make_image_filter()); | |
| break; | |
| case MATRIX_CONVOLUTION: | |
| { | |
| SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize), | |
| SkIntToScalar(kBitmapSize))); | |
| SkISize size = SkISize::Make(R(10)+1, R(10)+1); | |
| int arraySize = size.width() * size.height(); | |
| SkTArray<SkScalar> kernel(arraySize); | |
| for (int i = 0; i < arraySize; ++i) { | |
| kernel.push_back() = make_scalar(); | |
| } | |
| SkIPoint kernelOffset = SkIPoint::Make(R(SkIntToScalar(size.width())), | |
| R(SkIntToScalar(size.height()))); | |
| filter = SkMatrixConvolutionImageFilter::Create(size, | |
| kernel.begin(), | |
| make_scalar(), | |
| make_scalar(), | |
| kernelOffset, | |
| (SkMatrixConvolutionImageFilter::TileMode)R(3), | |
| R(2) == 1, | |
| make_image_filter(), | |
| &cropR); | |
| } | |
| break; | |
| case COMPOSE: | |
| filter = SkComposeImageFilter::Create(make_image_filter(), make_image_filter()); | |
| break; | |
| case DISTANT_LIGHT: | |
| filter = (R(2) == 1) ? | |
| SkLightingImageFilter::CreateDistantLitDiffuse(make_point(), | |
| make_color(), make_scalar(), make_scalar(), make_image_filter()) : | |
| SkLightingImageFilter::CreateDistantLitSpecular(make_point(), | |
| make_color(), make_scalar(), make_scalar(), SkIntToScalar(R(10)), | |
| make_image_filter()); | |
| break; | |
| case POINT_LIGHT: | |
| filter = (R(2) == 1) ? | |
| SkLightingImageFilter::CreatePointLitDiffuse(make_point(), | |
| make_color(), make_scalar(), make_scalar(), make_image_filter()) : | |
| SkLightingImageFilter::CreatePointLitSpecular(make_point(), | |
| make_color(), make_scalar(), make_scalar(), SkIntToScalar(R(10)), | |
| make_image_filter()); | |
| break; | |
| case SPOT_LIGHT: | |
| filter = (R(2) == 1) ? | |
| SkLightingImageFilter::CreateSpotLitDiffuse(SkPoint3::Make(0, 0, 0), | |
| make_point(), make_scalar(), make_scalar(), make_color(), | |
| make_scalar(), make_scalar(), make_image_filter()) : | |
| SkLightingImageFilter::CreateSpotLitSpecular(SkPoint3::Make(0, 0, 0), | |
| make_point(), make_scalar(), make_scalar(), make_color(), | |
| make_scalar(), make_scalar(), SkIntToScalar(R(10)), make_image_filter()); | |
| break; | |
| case NOISE: | |
| { | |
| SkAutoTUnref<SkShader> shader((R(2) == 1) ? | |
| SkPerlinNoiseShader::CreateFractalNoise( | |
| make_scalar(true), make_scalar(true), R(10.0f), make_scalar()) : | |
| SkPerlinNoiseShader::CreateTurbulence( | |
| make_scalar(true), make_scalar(true), R(10.0f), make_scalar())); | |
| SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize), | |
| SkIntToScalar(kBitmapSize))); | |
| filter = SkRectShaderImageFilter::Create(shader, &cropR); | |
| } | |
| break; | |
| case DROP_SHADOW: | |
| filter = SkDropShadowImageFilter::Create(make_scalar(), make_scalar(), make_scalar(true), | |
| make_scalar(true), make_color(), make_shadow_mode(), make_image_filter(), | |
| NULL); | |
| break; | |
| case MORPHOLOGY: | |
| if (R(2) == 1) { | |
| filter = SkDilateImageFilter::Create(R(static_cast<float>(kBitmapSize)), | |
| R(static_cast<float>(kBitmapSize)), make_image_filter()); | |
| } else { | |
| filter = SkErodeImageFilter::Create(R(static_cast<float>(kBitmapSize)), | |
| R(static_cast<float>(kBitmapSize)), make_image_filter()); | |
| } | |
| break; | |
| case BITMAP: | |
| if (R(2) == 1) { | |
| filter = SkBitmapSource::Create(make_bitmap(), make_rect(), make_rect()); | |
| } else { | |
| filter = SkBitmapSource::Create(make_bitmap()); | |
| } | |
| break; | |
| case DISPLACE: | |
| filter = SkDisplacementMapEffect::Create(make_channel_selector_type(), | |
| make_channel_selector_type(), make_scalar(), | |
| make_image_filter(false), make_image_filter()); | |
| break; | |
| case TILE: | |
| filter = SkTileImageFilter::Create(make_rect(), make_rect(), make_image_filter(false)); | |
| break; | |
| case PICTURE: | |
| { | |
| SkRTreeFactory factory; | |
| SkPictureRecorder recorder; | |
| SkCanvas* recordingCanvas = recorder.beginRecording(SkIntToScalar(kBitmapSize), | |
| SkIntToScalar(kBitmapSize), | |
| &factory, 0); | |
| drawSomething(recordingCanvas); | |
| SkAutoTUnref<SkPicture> pict(recorder.endRecording()); | |
| filter = SkPictureImageFilter::Create(pict.get(), make_rect()); | |
| } | |
| break; | |
| default: | |
| break; | |
| } | |
| return (filter || canBeNull) ? filter : make_image_filter(canBeNull); | |
| } | |
| static SkImageFilter* make_serialized_image_filter() { | |
| SkAutoTUnref<SkImageFilter> filter(make_image_filter(false)); | |
| SkAutoTUnref<SkData> data(SkValidatingSerializeFlattenable(filter)); | |
| const unsigned char* ptr = static_cast<const unsigned char*>(data->data()); | |
| size_t len = data->size(); | |
| #ifdef SK_ADD_RANDOM_BIT_FLIPS | |
| unsigned char* p = const_cast<unsigned char*>(ptr); | |
| for (size_t i = 0; i < len; ++i, ++p) { | |
| if (R(250) == 1) { // 0.4% of the time, flip a bit or byte | |
| if (R(10) == 1) { // Then 10% of the time, change a whole byte | |
| switch(R(3)) { | |
| case 0: | |
| *p ^= 0xFF; // Flip entire byte | |
| break; | |
| case 1: | |
| *p = 0xFF; // Set all bits to 1 | |
| break; | |
| case 2: | |
| *p = 0x00; // Set all bits to 0 | |
| break; | |
| } | |
| } else { | |
| *p ^= (1 << R(8)); | |
| } | |
| } | |
| } | |
| #endif // SK_ADD_RANDOM_BIT_FLIPS | |
| SkFlattenable* flattenable = SkValidatingDeserializeFlattenable(ptr, len, | |
| SkImageFilter::GetFlattenableType()); | |
| return static_cast<SkImageFilter*>(flattenable); | |
| } | |
| static void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) { | |
| canvas->save(); | |
| canvas->clipRect(SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y), | |
| SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize))); | |
| canvas->drawBitmap(make_bitmap(), SkIntToScalar(x), SkIntToScalar(y), &paint); | |
| canvas->restore(); | |
| } | |
| static void do_fuzz(SkCanvas* canvas) { | |
| SkImageFilter* filter = make_serialized_image_filter(); | |
| #ifdef SK_FUZZER_IS_VERBOSE | |
| static uint32_t numFilters = 0; | |
| static uint32_t numValidFilters = 0; | |
| if (0 == numFilters) { | |
| printf("Fuzzing with %u\n", kSeed); | |
| } | |
| numFilters++; | |
| if (filter) { | |
| numValidFilters++; | |
| } | |
| printf("Filter no : %u. Valid filters so far : %u\r", numFilters, numValidFilters); | |
| fflush(stdout); | |
| #endif | |
| SkPaint paint; | |
| SkSafeUnref(paint.setImageFilter(filter)); | |
| drawClippedBitmap(canvas, 0, 0, paint); | |
| } | |
| ////////////////////////////////////////////////////////////////////////////// | |
| class ImageFilterFuzzView : public SampleView { | |
| public: | |
| ImageFilterFuzzView() { | |
| this->setBGColor(0xFFDDDDDD); | |
| } | |
| protected: | |
| // overrides from SkEventSink | |
| virtual bool onQuery(SkEvent* evt) { | |
| if (SampleCode::TitleQ(*evt)) { | |
| SampleCode::TitleR(evt, "ImageFilterFuzzer"); | |
| return true; | |
| } | |
| return this->INHERITED::onQuery(evt); | |
| } | |
| void drawBG(SkCanvas* canvas) { | |
| canvas->drawColor(0xFFDDDDDD); | |
| } | |
| virtual void onDrawContent(SkCanvas* canvas) { | |
| do_fuzz(canvas); | |
| this->inval(0); | |
| } | |
| private: | |
| typedef SkView INHERITED; | |
| }; | |
| ////////////////////////////////////////////////////////////////////////////// | |
| static SkView* MyFactory() { return new ImageFilterFuzzView; } | |
| static SkViewRegister reg(MyFactory); |