skia2/samplecode/SampleFilterFuzz.cpp

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/*
* 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 "Sk1DPathEffect.h"
#include "Sk2DPathEffect.h"
#include "SkAlphaThresholdFilter.h"
#include "SkArcToPathEffect.h"
#include "SkBlurImageFilter.h"
#include "SkBlurMaskFilter.h"
#include "SkCanvas.h"
#include "SkColorCubeFilter.h"
#include "SkColorFilter.h"
#include "SkColorFilterImageFilter.h"
#include "SkColorMatrixFilter.h"
#include "SkComposeImageFilter.h"
#include "SkCornerPathEffect.h"
#include "SkDashPathEffect.h"
#include "SkData.h"
#include "SkDiscretePathEffect.h"
#include "SkDisplacementMapEffect.h"
#include "SkDropShadowImageFilter.h"
#include "SkEmbossMaskFilter.h"
#include "SkFlattenableSerialization.h"
#include "SkImageSource.h"
#include "SkLayerRasterizer.h"
#include "SkLightingImageFilter.h"
#include "SkLumaColorFilter.h"
#include "SkMagnifierImageFilter.h"
#include "SkMatrixConvolutionImageFilter.h"
#include "SkMergeImageFilter.h"
#include "SkMorphologyImageFilter.h"
#include "SkOffsetImageFilter.h"
#include "SkPaintImageFilter.h"
#include "SkPerlinNoiseShader.h"
#include "SkPictureImageFilter.h"
#include "SkPictureRecorder.h"
#include "SkPoint3.h"
#include "SkRandom.h"
#include "SkTableColorFilter.h"
#include "SkTestImageFilters.h"
#include "SkTileImageFilter.h"
#include "SkTypeface.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(nullptr));
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 SkString make_string() {
int length = R(1000);
SkString str(length);
for (int i = 0; i < length; ++i) {
str[i] = static_cast<char>(R(256));
}
return str;
}
static SkString make_font_name() {
int sel = R(8);
switch(sel) {
case 0: return SkString("Courier New");
case 1: return SkString("Helvetica");
case 2: return SkString("monospace");
case 3: return SkString("sans-serif");
case 4: return SkString("serif");
case 5: return SkString("Times");
case 6: return SkString("Times New Roman");
case 7:
default:
return make_string();
}
}
static bool make_bool() {
return R(2) == 1;
}
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 SkPaint::Align make_paint_align() {
return static_cast<SkPaint::Align>(R(SkPaint::kRight_Align+1));
}
static SkPaint::Hinting make_paint_hinting() {
return static_cast<SkPaint::Hinting>(R(SkPaint::kFull_Hinting+1));
}
static SkPaint::Style make_paint_style() {
return static_cast<SkPaint::Style>(R(SkPaint::kStrokeAndFill_Style+1));
}
static SkPaint::Cap make_paint_cap() {
return static_cast<SkPaint::Cap>(R(SkPaint::kDefault_Cap+1));
}
static SkPaint::Join make_paint_join() {
return static_cast<SkPaint::Join>(R(SkPaint::kDefault_Join+1));
}
static SkPaint::TextEncoding make_paint_text_encoding() {
return static_cast<SkPaint::TextEncoding>(R(SkPaint::kGlyphID_TextEncoding+1));
}
static SkBlurStyle make_blur_style() {
return static_cast<SkBlurStyle>(R(kLastEnum_SkBlurStyle+1));
}
static SkBlurMaskFilter::BlurFlags make_blur_mask_filter_flag() {
return static_cast<SkBlurMaskFilter::BlurFlags>(R(SkBlurMaskFilter::kAll_BlurFlag+1));
}
static SkFilterQuality make_filter_quality() {
return static_cast<SkFilterQuality>(R(kHigh_SkFilterQuality+1));
}
static SkTypeface::Style make_typeface_style() {
return static_cast<SkTypeface::Style>(R(SkTypeface::kBoldItalic+1));
}
static SkPath1DPathEffect::Style make_path_1d_path_effect_style() {
return static_cast<SkPath1DPathEffect::Style>(R((int)SkPath1DPathEffect::kLastEnum_Style + 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 sk_sp<SkData> make_3Dlut(int* cubeDimension, bool invR, bool invG, bool invB) {
int size = 4 << R(5);
auto data = SkData::MakeUninitialized(sizeof(SkColor) * size * size * size);
SkColor* pixels = (SkColor*)(data->writable_data());
SkAutoTMalloc<uint8_t> lutMemory(size);
SkAutoTMalloc<uint8_t> invLutMemory(size);
uint8_t* lut = lutMemory.get();
uint8_t* invLut = 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, nullptr);
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 void rand_color_table(uint8_t* table) {
for (int i = 0; i < 256; ++i) {
table[i] = R(256);
}
}
static sk_sp<SkColorFilter> make_color_filter() {
switch (R(6)) {
case 0: {
SkScalar array[20];
for (int i = 0; i < 20; ++i) {
array[i] = make_scalar();
}
return SkColorFilter::MakeMatrixFilterRowMajor255(array);
}
case 1:
return SkLumaColorFilter::Make();
case 2: {
uint8_t tableA[256];
uint8_t tableR[256];
uint8_t tableG[256];
uint8_t tableB[256];
rand_color_table(tableA);
rand_color_table(tableR);
rand_color_table(tableG);
rand_color_table(tableB);
return SkTableColorFilter::MakeARGB(tableA, tableR, tableG, tableB);
}
case 3:
return SkColorFilter::MakeModeFilter(make_color(), make_xfermode());
case 4:
return SkColorMatrixFilter::MakeLightingFilter(make_color(), make_color());
case 5:
default:
break;
}
return nullptr;
}
static SkPath make_path() {
SkPath path;
int numOps = R(30);
for (int i = 0; i < numOps; ++i) {
switch (R(6)) {
case 0:
path.moveTo(make_scalar(), make_scalar());
break;
case 1:
path.lineTo(make_scalar(), make_scalar());
break;
case 2:
path.quadTo(make_scalar(), make_scalar(), make_scalar(), make_scalar());
break;
case 3:
path.conicTo(make_scalar(), make_scalar(), make_scalar(), make_scalar(), make_scalar());
break;
case 4:
path.cubicTo(make_scalar(), make_scalar(), make_scalar(),
make_scalar(), make_scalar(), make_scalar());
break;
case 5:
default:
path.arcTo(make_scalar(), make_scalar(), make_scalar(), make_scalar(), make_scalar());
break;
}
}
path.close();
return path;
}
static sk_sp<SkPathEffect> make_path_effect(bool canBeNull = true) {
sk_sp<SkPathEffect> pathEffect;
if (canBeNull && (R(3) == 1)) { return pathEffect; }
switch (R(9)) {
case 0:
pathEffect = SkArcToPathEffect::Make(make_scalar(true));
break;
case 1:
pathEffect = SkComposePathEffect::Make(make_path_effect(false),
make_path_effect(false));
break;
case 2:
pathEffect = SkCornerPathEffect::Make(make_scalar());
break;
case 3: {
int count = R(10);
SkScalar intervals[10];
for (int i = 0; i < count; ++i) {
intervals[i] = make_scalar();
}
pathEffect = SkDashPathEffect::Make(intervals, count, make_scalar());
break;
}
case 4:
pathEffect = SkDiscretePathEffect::Make(make_scalar(), make_scalar());
break;
case 5:
pathEffect = SkPath1DPathEffect::Make(make_path(), make_scalar(), make_scalar(),
make_path_1d_path_effect_style());
break;
case 6:
pathEffect = SkLine2DPathEffect::Make(make_scalar(), make_matrix());
break;
case 7:
pathEffect = SkPath2DPathEffect::Make(make_matrix(), make_path());
break;
case 8:
default:
pathEffect = SkSumPathEffect::Make(make_path_effect(false),
make_path_effect(false));
break;
}
return pathEffect;
}
static SkMaskFilter* make_mask_filter() {
SkMaskFilter* maskFilter;
switch (R(3)) {
case 0:
maskFilter = SkBlurMaskFilter::Create(make_blur_style(),
make_scalar(),
make_blur_mask_filter_flag());
case 1: {
SkEmbossMaskFilter::Light light;
for (int i = 0; i < 3; ++i) {
light.fDirection[i] = make_scalar();
}
light.fPad = R(65536);
light.fAmbient = R(256);
light.fSpecular = R(256);
maskFilter = SkEmbossMaskFilter::Create(make_scalar(),
light);
}
case 2:
default:
maskFilter = nullptr;
break;
}
return maskFilter;
}
static sk_sp<SkImageFilter> make_image_filter(bool canBeNull = true);
static SkPaint make_paint() {
SkPaint paint;
paint.setHinting(make_paint_hinting());
paint.setAntiAlias(make_bool());
paint.setDither(make_bool());
paint.setLinearText(make_bool());
paint.setSubpixelText(make_bool());
paint.setLCDRenderText(make_bool());
paint.setEmbeddedBitmapText(make_bool());
paint.setAutohinted(make_bool());
paint.setVerticalText(make_bool());
paint.setUnderlineText(make_bool());
paint.setStrikeThruText(make_bool());
paint.setFakeBoldText(make_bool());
paint.setDevKernText(make_bool());
paint.setFilterQuality(make_filter_quality());
paint.setStyle(make_paint_style());
paint.setColor(make_color());
paint.setStrokeWidth(make_scalar());
paint.setStrokeMiter(make_scalar());
paint.setStrokeCap(make_paint_cap());
paint.setStrokeJoin(make_paint_join());
paint.setColorFilter(make_color_filter());
paint.setXfermodeMode(make_xfermode());
paint.setPathEffect(make_path_effect());
paint.setMaskFilter(make_mask_filter());
if (false) {
// our validating buffer does not support typefaces yet, so skip this for now
SkAutoTUnref<SkTypeface> typeface(
SkTypeface::CreateFromName(make_font_name().c_str(), make_typeface_style()));
paint.setTypeface(typeface);
}
SkLayerRasterizer::Builder rasterizerBuilder;
SkPaint paintForRasterizer;
if (R(2) == 1) {
paintForRasterizer = make_paint();
}
rasterizerBuilder.addLayer(paintForRasterizer);
paint.setRasterizer(rasterizerBuilder.detach());
paint.setImageFilter(make_image_filter());
sk_sp<SkData> data(make_3Dlut(nullptr, make_bool(), make_bool(), make_bool()));
paint.setTextAlign(make_paint_align());
paint.setTextSize(make_scalar());
paint.setTextScaleX(make_scalar());
paint.setTextSkewX(make_scalar());
paint.setTextEncoding(make_paint_text_encoding());
return paint;
}
static sk_sp<SkImageFilter> make_image_filter(bool canBeNull) {
sk_sp<SkImageFilter> filter;
// Add a 1 in 3 chance to get a nullptr 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, PAINT, NUM_FILTERS };
switch (R(NUM_FILTERS)) {
case ALPHA_THRESHOLD:
filter = sk_sp<SkImageFilter>(SkAlphaThresholdFilter::Create(make_region(),
make_scalar(),
make_scalar()));
break;
case MERGE:
filter = SkMergeImageFilter::Make(make_image_filter(),
make_image_filter(),
make_xfermode());
break;
case COLOR: {
sk_sp<SkColorFilter> cf(make_color_filter());
sk_sp<SkImageFilter> subFilter(make_image_filter());
filter = cf ? sk_sp<SkImageFilter>(SkColorFilterImageFilter::Create(cf.get(),
subFilter.get()))
: nullptr;
break;
}
case LUT3D: {
int cubeDimension;
sk_sp<SkData> lut3D(make_3Dlut(&cubeDimension, (R(2) == 1), (R(2) == 1), (R(2) == 1)));
sk_sp<SkColorFilter> cf(SkColorCubeFilter::Make(lut3D, cubeDimension));
sk_sp<SkImageFilter> subFilter(make_image_filter());
filter = cf ? sk_sp<SkImageFilter>(SkColorFilterImageFilter::Create(cf.get(),
subFilter.get()))
: nullptr;
break;
}
case BLUR: {
sk_sp<SkImageFilter> subFilter(make_image_filter());
filter = sk_sp<SkImageFilter>(SkBlurImageFilter::Create(make_scalar(true),
make_scalar(true),
subFilter.get()));
break;
}
case MAGNIFIER:
filter = sk_sp<SkImageFilter>(SkMagnifierImageFilter::Create(make_rect(),
make_scalar(true)));
break;
case DOWN_SAMPLE:
filter = sk_sp<SkImageFilter>(SkDownSampleImageFilter::Create(make_scalar()));
break;
case XFERMODE: {
sk_sp<SkImageFilter> subFilter1(make_image_filter());
sk_sp<SkImageFilter> subFilter2(make_image_filter());
filter = SkXfermodeImageFilter::Make(SkXfermode::Make(make_xfermode()),
subFilter1.get(),
subFilter2.get(),
nullptr);
break;
}
case OFFSET: {
sk_sp<SkImageFilter> subFilter(make_image_filter());
filter = sk_sp<SkImageFilter>(SkOffsetImageFilter::Create(make_scalar(), make_scalar(),
subFilter.get()));
break;
}
case MATRIX: {
sk_sp<SkImageFilter> subFilter(make_image_filter());
filter = sk_sp<SkImageFilter>(SkImageFilter::CreateMatrixFilter(make_matrix(),
(SkFilterQuality)R(4),
subFilter.get()));
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())));
sk_sp<SkImageFilter> subFilter(make_image_filter());
filter = sk_sp<SkImageFilter>(SkMatrixConvolutionImageFilter::Create(
size,
kernel.begin(),
make_scalar(),
make_scalar(),
kernelOffset,
(SkMatrixConvolutionImageFilter::TileMode)R(3),
R(2) == 1,
subFilter.get(),
&cropR));
break;
}
case COMPOSE:
filter = SkComposeImageFilter::Make(make_image_filter(), make_image_filter());
break;
case DISTANT_LIGHT: {
sk_sp<SkImageFilter> subFilter(make_image_filter());
filter = (R(2) == 1)
? sk_sp<SkImageFilter>(SkLightingImageFilter::CreateDistantLitDiffuse(make_point(),
make_color(), make_scalar(), make_scalar(),
subFilter.get()))
: sk_sp<SkImageFilter>(SkLightingImageFilter::CreateDistantLitSpecular(make_point(),
make_color(), make_scalar(),
make_scalar(), SkIntToScalar(R(10)),
subFilter.get()));
break;
}
case POINT_LIGHT: {
sk_sp<SkImageFilter> subFilter(make_image_filter());
filter = (R(2) == 1)
? sk_sp<SkImageFilter>(SkLightingImageFilter::CreatePointLitDiffuse(make_point(),
make_color(), make_scalar(), make_scalar(),
subFilter.get()))
: sk_sp<SkImageFilter>(SkLightingImageFilter::CreatePointLitSpecular(make_point(),
make_color(), make_scalar(), make_scalar(),
SkIntToScalar(R(10)),
subFilter.get()));
break;
}
case SPOT_LIGHT: {
sk_sp<SkImageFilter> subFilter(make_image_filter());
filter = (R(2) == 1)
? sk_sp<SkImageFilter>(SkLightingImageFilter::CreateSpotLitDiffuse(SkPoint3::Make(0, 0, 0),
make_point(), make_scalar(), make_scalar(),
make_color(), make_scalar(), make_scalar(),
subFilter.get()))
: sk_sp<SkImageFilter>(SkLightingImageFilter::CreateSpotLitSpecular(SkPoint3::Make(0, 0, 0),
make_point(), make_scalar(), make_scalar(),
make_color(), make_scalar(), make_scalar(),
SkIntToScalar(R(10)), subFilter.get()));
break;
}
case NOISE: {
sk_sp<SkShader> shader((R(2) == 1) ?
SkPerlinNoiseShader::MakeFractalNoise(
make_scalar(true), make_scalar(true), R(10.0f), make_scalar()) :
SkPerlinNoiseShader::MakeTurbulence(
make_scalar(true), make_scalar(true), R(10.0f), make_scalar()));
SkPaint paint;
paint.setShader(shader);
SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize)));
filter = SkPaintImageFilter::Make(paint, &cropR);
break;
}
case DROP_SHADOW: {
sk_sp<SkImageFilter> subFilter(make_image_filter());
filter = sk_sp<SkImageFilter>(SkDropShadowImageFilter::Create(make_scalar(),
make_scalar(),
make_scalar(true),
make_scalar(true),
make_color(),
make_shadow_mode(),
subFilter.get(),
nullptr));
break;
}
case MORPHOLOGY: {
sk_sp<SkImageFilter> subFilter(make_image_filter());
if (R(2) == 1) {
filter = sk_sp<SkImageFilter>(SkDilateImageFilter::Create(R(static_cast<float>(kBitmapSize)),
R(static_cast<float>(kBitmapSize)),
subFilter.get()));
} else {
filter = sk_sp<SkImageFilter>(SkErodeImageFilter::Create(R(static_cast<float>(kBitmapSize)),
R(static_cast<float>(kBitmapSize)),
subFilter.get()));
}
break;
}
case BITMAP: {
sk_sp<SkImage> image(SkImage::MakeFromBitmap(make_bitmap()));
if (R(2) == 1) {
filter = sk_sp<SkImageFilter>(SkImageSource::Create(image.get(),
make_rect(),
make_rect(),
kHigh_SkFilterQuality));
} else {
filter = sk_sp<SkImageFilter>(SkImageSource::Create(image.get()));
}
break;
}
case DISPLACE: {
sk_sp<SkImageFilter> subFilter1(make_image_filter(false));
sk_sp<SkImageFilter> subFilter2(make_image_filter());
filter = sk_sp<SkImageFilter>(SkDisplacementMapEffect::Create(make_channel_selector_type(),
make_channel_selector_type(),
make_scalar(),
subFilter1.get(),
subFilter2.get()));
break;
}
case TILE: {
sk_sp<SkImageFilter> subFilter(make_image_filter(false));
filter = sk_sp<SkImageFilter>(SkTileImageFilter::Create(make_rect(),
make_rect(),
subFilter.get()));
break;
}
case PICTURE: {
SkRTreeFactory factory;
SkPictureRecorder recorder;
SkCanvas* recordingCanvas = recorder.beginRecording(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize),
&factory, 0);
drawSomething(recordingCanvas);
sk_sp<SkPicture> pict(recorder.finishRecordingAsPicture());
filter = SkPictureImageFilter::Make(pict, make_rect());
break;
}
case PAINT: {
SkImageFilter::CropRect cropR(make_rect());
filter = SkPaintImageFilter::Make(make_paint(), &cropR);
break;
}
default:
break;
}
return (filter || canBeNull) ? filter : make_image_filter(canBeNull);
}
static SkImageFilter* make_serialized_image_filter() {
sk_sp<SkImageFilter> filter(make_image_filter(false));
SkAutoTUnref<SkData> data(SkValidatingSerializeFlattenable(filter.get()));
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);