| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkSurface.h" |
| #include "include/private/SkImageInfoPriv.h" |
| #include "include/utils/SkNWayCanvas.h" |
| #include "src/core/SkMathPriv.h" |
| #include "tests/Test.h" |
| |
| static const int DEV_W = 100, DEV_H = 100; |
| static const SkIRect DEV_RECT = SkIRect::MakeWH(DEV_W, DEV_H); |
| static const SkRect DEV_RECT_S = SkRect::MakeWH(DEV_W * SK_Scalar1, |
| DEV_H * SK_Scalar1); |
| |
| static SkPMColor get_src_color(int x, int y) { |
| SkASSERT(x >= 0 && x < DEV_W); |
| SkASSERT(y >= 0 && y < DEV_H); |
| |
| U8CPU r = x; |
| U8CPU g = y; |
| U8CPU b = 0xc; |
| |
| U8CPU a = 0xff; |
| switch ((x+y) % 5) { |
| case 0: |
| a = 0xff; |
| break; |
| case 1: |
| a = 0x80; |
| break; |
| case 2: |
| a = 0xCC; |
| break; |
| case 4: |
| a = 0x01; |
| break; |
| case 3: |
| a = 0x00; |
| break; |
| } |
| return SkPremultiplyARGBInline(a, r, g, b); |
| } |
| |
| static SkPMColor get_dst_bmp_init_color(int x, int y, int w) { |
| int n = y * w + x; |
| |
| U8CPU b = n & 0xff; |
| U8CPU g = (n >> 8) & 0xff; |
| U8CPU r = (n >> 16) & 0xff; |
| return SkPackARGB32(0xff, r, g , b); |
| } |
| |
| // TODO: Make this consider both ATs |
| static SkPMColor convert_to_pmcolor(SkColorType ct, SkAlphaType at, const uint32_t* addr, |
| bool* doUnpremul) { |
| *doUnpremul = (kUnpremul_SkAlphaType == at); |
| |
| const uint8_t* c = reinterpret_cast<const uint8_t*>(addr); |
| U8CPU a,r,g,b; |
| switch (ct) { |
| case kBGRA_8888_SkColorType: |
| b = static_cast<U8CPU>(c[0]); |
| g = static_cast<U8CPU>(c[1]); |
| r = static_cast<U8CPU>(c[2]); |
| a = static_cast<U8CPU>(c[3]); |
| break; |
| case kRGB_888x_SkColorType: // fallthrough |
| case kRGBA_8888_SkColorType: |
| r = static_cast<U8CPU>(c[0]); |
| g = static_cast<U8CPU>(c[1]); |
| b = static_cast<U8CPU>(c[2]); |
| // We set this even when for kRGB_888x because our caller will validate that it is 0xff. |
| a = static_cast<U8CPU>(c[3]); |
| break; |
| default: |
| SkDEBUGFAIL("Unexpected colortype"); |
| return 0; |
| } |
| |
| if (*doUnpremul) { |
| r = SkMulDiv255Ceiling(r, a); |
| g = SkMulDiv255Ceiling(g, a); |
| b = SkMulDiv255Ceiling(b, a); |
| } |
| return SkPackARGB32(a, r, g, b); |
| } |
| |
| static sk_sp<SkImage> make_src_image() { |
| static SkBitmap bmp; |
| if (bmp.isNull()) { |
| bmp.allocN32Pixels(DEV_W, DEV_H); |
| intptr_t pixels = reinterpret_cast<intptr_t>(bmp.getPixels()); |
| for (int y = 0; y < DEV_H; ++y) { |
| for (int x = 0; x < DEV_W; ++x) { |
| SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bmp.rowBytes() + x * bmp.bytesPerPixel()); |
| *pixel = get_src_color(x, y); |
| } |
| } |
| bmp.setImmutable(); |
| } |
| return bmp.asImage(); |
| } |
| |
| static void fill_src_canvas(SkCanvas* canvas) { |
| canvas->save(); |
| canvas->setMatrix(SkMatrix::I()); |
| canvas->clipRect(DEV_RECT_S, SkClipOp::kIntersect); |
| SkPaint paint; |
| paint.setBlendMode(SkBlendMode::kSrc); |
| canvas->drawImage(make_src_image(), 0, 0, SkSamplingOptions(), &paint); |
| canvas->restore(); |
| } |
| |
| static void fill_dst_bmp_with_init_data(SkBitmap* bitmap) { |
| int w = bitmap->width(); |
| int h = bitmap->height(); |
| intptr_t pixels = reinterpret_cast<intptr_t>(bitmap->getPixels()); |
| for (int y = 0; y < h; ++y) { |
| for (int x = 0; x < w; ++x) { |
| SkPMColor initColor = get_dst_bmp_init_color(x, y, w); |
| if (kAlpha_8_SkColorType == bitmap->colorType()) { |
| uint8_t* alpha = reinterpret_cast<uint8_t*>(pixels + y * bitmap->rowBytes() + x); |
| *alpha = SkGetPackedA32(initColor); |
| } else { |
| SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bitmap->rowBytes() + x * bitmap->bytesPerPixel()); |
| *pixel = initColor; |
| } |
| } |
| } |
| } |
| |
| static bool check_read_pixel(SkPMColor a, SkPMColor b, bool didPremulConversion) { |
| if (!didPremulConversion) { |
| return a == b; |
| } |
| int32_t aA = static_cast<int32_t>(SkGetPackedA32(a)); |
| int32_t aR = static_cast<int32_t>(SkGetPackedR32(a)); |
| int32_t aG = static_cast<int32_t>(SkGetPackedG32(a)); |
| int32_t aB = SkGetPackedB32(a); |
| |
| int32_t bA = static_cast<int32_t>(SkGetPackedA32(b)); |
| int32_t bR = static_cast<int32_t>(SkGetPackedR32(b)); |
| int32_t bG = static_cast<int32_t>(SkGetPackedG32(b)); |
| int32_t bB = static_cast<int32_t>(SkGetPackedB32(b)); |
| |
| return aA == bA && |
| SkAbs32(aR - bR) <= 1 && |
| SkAbs32(aG - bG) <= 1 && |
| SkAbs32(aB - bB) <= 1; |
| } |
| |
| // checks the bitmap contains correct pixels after the readPixels |
| // if the bitmap was prefilled with pixels it checks that these weren't |
| // overwritten in the area outside the readPixels. |
| static bool check_read(skiatest::Reporter* reporter, const SkBitmap& bitmap, int x, int y, |
| bool checkSurfacePixels, bool checkBitmapPixels, |
| SkImageInfo surfaceInfo) { |
| SkAlphaType bmpAT = bitmap.alphaType(); |
| SkColorType bmpCT = bitmap.colorType(); |
| SkASSERT(!bitmap.isNull()); |
| SkASSERT(checkSurfacePixels || checkBitmapPixels); |
| |
| int bw = bitmap.width(); |
| int bh = bitmap.height(); |
| |
| SkIRect srcRect = SkIRect::MakeXYWH(x, y, bw, bh); |
| SkIRect clippedSrcRect = DEV_RECT; |
| if (!clippedSrcRect.intersect(srcRect)) { |
| clippedSrcRect.setEmpty(); |
| } |
| if (kAlpha_8_SkColorType == bmpCT) { |
| for (int by = 0; by < bh; ++by) { |
| for (int bx = 0; bx < bw; ++bx) { |
| int devx = bx + srcRect.fLeft; |
| int devy = by + srcRect.fTop; |
| const uint8_t* alpha = bitmap.getAddr8(bx, by); |
| |
| if (clippedSrcRect.contains(devx, devy)) { |
| if (checkSurfacePixels) { |
| uint8_t surfaceAlpha = (surfaceInfo.alphaType() == kOpaque_SkAlphaType) |
| ? 0xFF |
| : SkGetPackedA32(get_src_color(devx, devy)); |
| if (surfaceAlpha != *alpha) { |
| ERRORF(reporter, |
| "Expected readback alpha (%d, %d) value 0x%02x, got 0x%02x. ", |
| bx, by, surfaceAlpha, *alpha); |
| return false; |
| } |
| } |
| } else if (checkBitmapPixels) { |
| uint32_t origDstAlpha = SkGetPackedA32(get_dst_bmp_init_color(bx, by, bw)); |
| if (origDstAlpha != *alpha) { |
| ERRORF(reporter, "Expected clipped out area of readback to be unchanged. " |
| "Expected 0x%02x, got 0x%02x", origDstAlpha, *alpha); |
| return false; |
| } |
| } |
| } |
| } |
| return true; |
| } |
| for (int by = 0; by < bh; ++by) { |
| for (int bx = 0; bx < bw; ++bx) { |
| int devx = bx + srcRect.fLeft; |
| int devy = by + srcRect.fTop; |
| |
| const uint32_t* pixel = bitmap.getAddr32(bx, by); |
| |
| if (clippedSrcRect.contains(devx, devy)) { |
| if (checkSurfacePixels) { |
| SkPMColor surfacePMColor = get_src_color(devx, devy); |
| if (SkColorTypeIsAlphaOnly(surfaceInfo.colorType())) { |
| surfacePMColor &= 0xFF000000; |
| } |
| if (kOpaque_SkAlphaType == surfaceInfo.alphaType() || kOpaque_SkAlphaType == bmpAT) { |
| surfacePMColor |= 0xFF000000; |
| } |
| bool didPremul; |
| SkPMColor pmPixel = convert_to_pmcolor(bmpCT, bmpAT, pixel, &didPremul); |
| if (!check_read_pixel(pmPixel, surfacePMColor, didPremul)) { |
| ERRORF(reporter, |
| "Expected readback pixel (%d, %d) value 0x%08x, got 0x%08x. " |
| "Readback was unpremul: %d", |
| bx, by, surfacePMColor, pmPixel, didPremul); |
| return false; |
| } |
| } |
| } else if (checkBitmapPixels) { |
| uint32_t origDstPixel = get_dst_bmp_init_color(bx, by, bw); |
| if (origDstPixel != *pixel) { |
| ERRORF(reporter, "Expected clipped out area of readback to be unchanged. " |
| "Expected 0x%08x, got 0x%08x", origDstPixel, *pixel); |
| return false; |
| } |
| } |
| } |
| } |
| return true; |
| } |
| |
| enum class TightRowBytes : bool { kNo, kYes }; |
| |
| static void init_bitmap(SkBitmap* bitmap, const SkIRect& rect, TightRowBytes tightRB, |
| SkColorType ct, SkAlphaType at) { |
| SkImageInfo info = SkImageInfo::Make(rect.size(), ct, at); |
| size_t rowBytes = 0; |
| if (tightRB == TightRowBytes::kNo) { |
| rowBytes = SkAlign4((info.width() + 16) * info.bytesPerPixel()); |
| } |
| bitmap->allocPixels(info, rowBytes); |
| } |
| |
| static const struct { |
| SkColorType fColorType; |
| SkAlphaType fAlphaType; |
| } gReadPixelsConfigs[] = { |
| {kRGBA_8888_SkColorType, kPremul_SkAlphaType}, |
| {kRGBA_8888_SkColorType, kUnpremul_SkAlphaType}, |
| {kRGB_888x_SkColorType, kOpaque_SkAlphaType}, |
| {kBGRA_8888_SkColorType, kPremul_SkAlphaType}, |
| {kBGRA_8888_SkColorType, kUnpremul_SkAlphaType}, |
| {kAlpha_8_SkColorType, kPremul_SkAlphaType}, |
| }; |
| const SkIRect gReadPixelsTestRects[] = { |
| // entire thing |
| DEV_RECT, |
| // larger on all sides |
| SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H + 10), |
| // fully contained |
| SkIRect::MakeLTRB(DEV_W / 4, DEV_H / 4, 3 * DEV_W / 4, 3 * DEV_H / 4), |
| // outside top left |
| SkIRect::MakeLTRB(-10, -10, -1, -1), |
| // touching top left corner |
| SkIRect::MakeLTRB(-10, -10, 0, 0), |
| // overlapping top left corner |
| SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H / 4), |
| // overlapping top left and top right corners |
| SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H / 4), |
| // touching entire top edge |
| SkIRect::MakeLTRB(-10, -10, DEV_W + 10, 0), |
| // overlapping top right corner |
| SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H / 4), |
| // contained in x, overlapping top edge |
| SkIRect::MakeLTRB(DEV_W / 4, -10, 3 * DEV_W / 4, DEV_H / 4), |
| // outside top right corner |
| SkIRect::MakeLTRB(DEV_W + 1, -10, DEV_W + 10, -1), |
| // touching top right corner |
| SkIRect::MakeLTRB(DEV_W, -10, DEV_W + 10, 0), |
| // overlapping top left and bottom left corners |
| SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H + 10), |
| // touching entire left edge |
| SkIRect::MakeLTRB(-10, -10, 0, DEV_H + 10), |
| // overlapping bottom left corner |
| SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W / 4, DEV_H + 10), |
| // contained in y, overlapping left edge |
| SkIRect::MakeLTRB(-10, DEV_H / 4, DEV_W / 4, 3 * DEV_H / 4), |
| // outside bottom left corner |
| SkIRect::MakeLTRB(-10, DEV_H + 1, -1, DEV_H + 10), |
| // touching bottom left corner |
| SkIRect::MakeLTRB(-10, DEV_H, 0, DEV_H + 10), |
| // overlapping bottom left and bottom right corners |
| SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10), |
| // touching entire left edge |
| SkIRect::MakeLTRB(0, DEV_H, DEV_W, DEV_H + 10), |
| // overlapping bottom right corner |
| SkIRect::MakeLTRB(3 * DEV_W / 4, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10), |
| // overlapping top right and bottom right corners |
| SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H + 10), |
| }; |
| |
| bool read_should_succeed(const SkIRect& srcRect, const SkImageInfo& dstInfo, |
| const SkImageInfo& srcInfo) { |
| return SkIRect::Intersects(srcRect, DEV_RECT) && SkImageInfoValidConversion(dstInfo, srcInfo); |
| } |
| |
| static void test_readpixels(skiatest::Reporter* reporter, const sk_sp<SkSurface>& surface, |
| const SkImageInfo& surfaceInfo) { |
| SkCanvas* canvas = surface->getCanvas(); |
| fill_src_canvas(canvas); |
| for (size_t rect = 0; rect < SK_ARRAY_COUNT(gReadPixelsTestRects); ++rect) { |
| const SkIRect& srcRect = gReadPixelsTestRects[rect]; |
| for (auto tightRB : {TightRowBytes::kYes, TightRowBytes::kNo}) { |
| for (size_t c = 0; c < SK_ARRAY_COUNT(gReadPixelsConfigs); ++c) { |
| SkBitmap bmp; |
| init_bitmap(&bmp, srcRect, tightRB, gReadPixelsConfigs[c].fColorType, |
| gReadPixelsConfigs[c].fAlphaType); |
| |
| // if the bitmap has pixels allocated before the readPixels, |
| // note that and fill them with pattern |
| bool startsWithPixels = !bmp.isNull(); |
| if (startsWithPixels) { |
| fill_dst_bmp_with_init_data(&bmp); |
| } |
| uint32_t idBefore = surface->generationID(); |
| bool success = surface->readPixels(bmp, srcRect.fLeft, srcRect.fTop); |
| uint32_t idAfter = surface->generationID(); |
| |
| // we expect to succeed when the read isn't fully clipped out and the infos are |
| // compatible. |
| bool expectSuccess = read_should_succeed(srcRect, bmp.info(), surfaceInfo); |
| // determine whether we expected the read to succeed. |
| REPORTER_ASSERT(reporter, expectSuccess == success, |
| "Read succeed=%d unexpectedly, src ct/at: %d/%d, dst ct/at: %d/%d", |
| success, surfaceInfo.colorType(), surfaceInfo.alphaType(), |
| bmp.info().colorType(), bmp.info().alphaType()); |
| // read pixels should never change the gen id |
| REPORTER_ASSERT(reporter, idBefore == idAfter); |
| |
| if (success || startsWithPixels) { |
| check_read(reporter, bmp, srcRect.fLeft, srcRect.fTop, success, |
| startsWithPixels, surfaceInfo); |
| } else { |
| // if we had no pixels beforehand and the readPixels |
| // failed then our bitmap should still not have pixels |
| REPORTER_ASSERT(reporter, bmp.isNull()); |
| } |
| } |
| } |
| } |
| } |
| |
| DEF_TEST(ReadPixels, reporter) { |
| const SkImageInfo info = SkImageInfo::MakeN32Premul(DEV_W, DEV_H); |
| auto surface(SkSurface::MakeRaster(info)); |
| test_readpixels(reporter, surface, info); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static const uint32_t kNumPixels = 5; |
| |
| // The five reference pixels are: red, green, blue, white, black. |
| // Five is an interesting number to test because we'll exercise a full 4-wide SIMD vector |
| // plus a tail pixel. |
| static const uint32_t rgba[kNumPixels] = { |
| 0xFF0000FF, 0xFF00FF00, 0xFFFF0000, 0xFFFFFFFF, 0xFF000000 |
| }; |
| static const uint32_t bgra[kNumPixels] = { |
| 0xFFFF0000, 0xFF00FF00, 0xFF0000FF, 0xFFFFFFFF, 0xFF000000 |
| }; |
| static const uint16_t rgb565[kNumPixels] = { |
| SK_R16_MASK_IN_PLACE, SK_G16_MASK_IN_PLACE, SK_B16_MASK_IN_PLACE, 0xFFFF, 0x0 |
| }; |
| |
| static const uint16_t rgba4444[kNumPixels] = { 0xF00F, 0x0F0F, 0x00FF, 0xFFFF, 0x000F }; |
| |
| static const uint64_t kRed = (uint64_t) SK_Half1 << 0; |
| static const uint64_t kGreen = (uint64_t) SK_Half1 << 16; |
| static const uint64_t kBlue = (uint64_t) SK_Half1 << 32; |
| static const uint64_t kAlpha = (uint64_t) SK_Half1 << 48; |
| static const uint64_t f16[kNumPixels] = { |
| kAlpha | kRed, kAlpha | kGreen, kAlpha | kBlue, kAlpha | kBlue | kGreen | kRed, kAlpha |
| }; |
| |
| static const uint8_t alpha8[kNumPixels] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| static const uint8_t gray8[kNumPixels] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| |
| static const void* five_reference_pixels(SkColorType colorType) { |
| switch (colorType) { |
| case kUnknown_SkColorType: |
| return nullptr; |
| case kAlpha_8_SkColorType: |
| return alpha8; |
| case kRGB_565_SkColorType: |
| return rgb565; |
| case kARGB_4444_SkColorType: |
| return rgba4444; |
| case kRGBA_8888_SkColorType: |
| return rgba; |
| case kBGRA_8888_SkColorType: |
| return bgra; |
| case kGray_8_SkColorType: |
| return gray8; |
| case kRGBA_F16_SkColorType: |
| return f16; |
| default: |
| return nullptr; |
| } |
| |
| SkASSERT(false); |
| return nullptr; |
| } |
| |
| static void test_conversion(skiatest::Reporter* r, const SkImageInfo& dstInfo, |
| const SkImageInfo& srcInfo) { |
| if (!SkImageInfoIsValid(srcInfo)) { |
| return; |
| } |
| |
| const void* srcPixels = five_reference_pixels(srcInfo.colorType()); |
| SkPixmap srcPixmap(srcInfo, srcPixels, srcInfo.minRowBytes()); |
| sk_sp<SkImage> src = SkImage::MakeFromRaster(srcPixmap, nullptr, nullptr); |
| REPORTER_ASSERT(r, src); |
| |
| // Enough space for 5 pixels when color type is F16, more than enough space in other cases. |
| uint64_t dstPixels[kNumPixels]; |
| SkPixmap dstPixmap(dstInfo, dstPixels, dstInfo.minRowBytes()); |
| bool success = src->readPixels(nullptr, dstPixmap, 0, 0); |
| REPORTER_ASSERT(r, success == SkImageInfoValidConversion(dstInfo, srcInfo)); |
| |
| if (success) { |
| if (kGray_8_SkColorType == srcInfo.colorType() && |
| kGray_8_SkColorType != dstInfo.colorType()) { |
| // TODO: test (r,g,b) == (gray,gray,gray)? |
| return; |
| } |
| |
| if (kGray_8_SkColorType == dstInfo.colorType() && |
| kGray_8_SkColorType != srcInfo.colorType()) { |
| // TODO: test gray = luminance? |
| return; |
| } |
| |
| if (kAlpha_8_SkColorType == srcInfo.colorType() && |
| kAlpha_8_SkColorType != dstInfo.colorType()) { |
| // TODO: test output = black with this alpha? |
| return; |
| } |
| |
| REPORTER_ASSERT(r, 0 == memcmp(dstPixels, five_reference_pixels(dstInfo.colorType()), |
| kNumPixels * SkColorTypeBytesPerPixel(dstInfo.colorType()))); |
| } |
| } |
| |
| DEF_TEST(ReadPixels_ValidConversion, reporter) { |
| const SkColorType kColorTypes[] = { |
| kUnknown_SkColorType, |
| kAlpha_8_SkColorType, |
| kRGB_565_SkColorType, |
| kARGB_4444_SkColorType, |
| kRGBA_8888_SkColorType, |
| kBGRA_8888_SkColorType, |
| kGray_8_SkColorType, |
| kRGBA_F16_SkColorType, |
| }; |
| |
| const SkAlphaType kAlphaTypes[] = { |
| kUnknown_SkAlphaType, |
| kOpaque_SkAlphaType, |
| kPremul_SkAlphaType, |
| kUnpremul_SkAlphaType, |
| }; |
| |
| const sk_sp<SkColorSpace> kColorSpaces[] = { |
| nullptr, |
| SkColorSpace::MakeSRGB(), |
| }; |
| |
| for (SkColorType dstCT : kColorTypes) { |
| for (SkAlphaType dstAT : kAlphaTypes) { |
| for (const sk_sp<SkColorSpace>& dstCS : kColorSpaces) { |
| for (SkColorType srcCT : kColorTypes) { |
| for (SkAlphaType srcAT : kAlphaTypes) { |
| for (const sk_sp<SkColorSpace>& srcCS : kColorSpaces) { |
| test_conversion(reporter, |
| SkImageInfo::Make(kNumPixels, 1, dstCT, dstAT, dstCS), |
| SkImageInfo::Make(kNumPixels, 1, srcCT, srcAT, srcCS)); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| DEF_TEST(ReadPixels_InvalidRowBytes, reporter) { |
| auto srcII = SkImageInfo::Make({10, 10}, kRGBA_8888_SkColorType, kPremul_SkAlphaType); |
| auto surf = SkSurface::MakeRaster(srcII); |
| for (int ct = 0; ct < kLastEnum_SkColorType + 1; ++ct) { |
| auto colorType = static_cast<SkColorType>(ct); |
| size_t bpp = SkColorTypeBytesPerPixel(colorType); |
| if (bpp <= 1) { |
| continue; |
| } |
| auto dstII = srcII.makeColorType(colorType); |
| size_t badRowBytes = (surf->width() + 1)*bpp - 1; |
| auto storage = std::make_unique<char[]>(badRowBytes*surf->height()); |
| REPORTER_ASSERT(reporter, !surf->readPixels(dstII, storage.get(), badRowBytes, 0, 0)); |
| } |
| } |
