| /* |
| * 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 "SkMatrixImageFilter.h" |
| #include "SkMatrixConvolutionImageFilter.h" |
| #include "SkMergeImageFilter.h" |
| #include "SkMorphologyImageFilter.h" |
| #include "SkOffsetImageFilter.h" |
| #include "SkPerlinNoiseShader.h" |
| #include "SkPictureImageFilter.h" |
| #include "SkPictureRecorder.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_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 = SkMatrixImageFilter::Create(make_matrix(), |
| (SkPaint::FilterLevel)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(0, 0, 0), |
| make_point(), make_scalar(), make_scalar(), make_color(), |
| make_scalar(), make_scalar(), make_image_filter()) : |
| SkLightingImageFilter::CreateSpotLitSpecular(SkPoint3(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, 0); |
| 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); |
