| /* |
| * 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/SkAlphaType.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorPriv.h" |
| #include "include/core/SkColorSpace.h" |
| #include "include/core/SkColorType.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkTypes.h" |
| #include "src/core/SkOpts.h" |
| #include "tests/Test.h" |
| #include "tools/ToolUtils.h" |
| |
| #include <array> |
| #include <cstddef> |
| |
| static void init_src(const SkBitmap& bitmap) { |
| if (bitmap.getPixels()) { |
| bitmap.eraseColor(SK_ColorWHITE); |
| } |
| } |
| |
| struct Pair { |
| SkColorType fColorType; |
| const char* fValid; |
| }; |
| |
| // Utility functions for copyPixelsTo()/copyPixelsFrom() tests. |
| // getPixel() |
| // setPixel() |
| // getSkConfigName() |
| // struct Coordinates |
| // reportCopyVerification() |
| // writeCoordPixels() |
| |
| // Helper struct to contain pixel locations, while avoiding need for STL. |
| struct Coordinates { |
| |
| const int length; |
| SkIPoint* const data; |
| |
| explicit Coordinates(int _length): length(_length) |
| , data(new SkIPoint[length]) { } |
| |
| ~Coordinates(){ |
| delete [] data; |
| } |
| |
| SkIPoint* operator[](int i) const { |
| // Use with care, no bounds checking. |
| return data + i; |
| } |
| }; |
| |
| static const Pair gPairs[] = { |
| { kUnknown_SkColorType, "0000000" }, |
| { kAlpha_8_SkColorType, "0100000" }, |
| { kRGB_565_SkColorType, "0101011" }, |
| { kARGB_4444_SkColorType, "0101111" }, |
| { kN32_SkColorType, "0101111" }, |
| { kRGBA_F16_SkColorType, "0101011" }, |
| }; |
| |
| static void setup_src_bitmaps(SkBitmap* srcOpaque, SkBitmap* srcPremul, |
| SkColorType ct) { |
| const int W = 20; |
| const int H = 33; |
| sk_sp<SkColorSpace> colorSpace = nullptr; |
| if (kRGBA_F16_SkColorType == ct) { |
| colorSpace = SkColorSpace::MakeSRGB(); |
| } |
| |
| srcOpaque->allocPixels(SkImageInfo::Make(W, H, ct, kOpaque_SkAlphaType, colorSpace)); |
| srcPremul->allocPixels(SkImageInfo::Make(W, H, ct, kPremul_SkAlphaType, colorSpace)); |
| init_src(*srcOpaque); |
| init_src(*srcPremul); |
| } |
| |
| DEF_TEST(BitmapCopy_extractSubset, reporter) { |
| const int W = 20; |
| for (size_t i = 0; i < std::size(gPairs); i++) { |
| SkBitmap srcOpaque, srcPremul; |
| setup_src_bitmaps(&srcOpaque, &srcPremul, gPairs[i].fColorType); |
| |
| SkBitmap bitmap(srcOpaque); |
| SkBitmap subset; |
| SkIRect r; |
| // Extract a subset which has the same width as the original. This |
| // catches a bug where we cloned the genID incorrectly. |
| r.setLTRB(0, 1, W, 3); |
| // Relies on old behavior of extractSubset failing if colortype is unknown |
| if (kUnknown_SkColorType != bitmap.colorType() && bitmap.extractSubset(&subset, r)) { |
| REPORTER_ASSERT(reporter, subset.width() == W); |
| REPORTER_ASSERT(reporter, subset.height() == 2); |
| REPORTER_ASSERT(reporter, subset.alphaType() == bitmap.alphaType()); |
| |
| // Test copying an extracted subset. |
| for (size_t j = 0; j < std::size(gPairs); j++) { |
| SkBitmap copy; |
| bool success = ToolUtils::copy_to(©, gPairs[j].fColorType, subset); |
| if (!success) { |
| // Skip checking that success matches fValid, which is redundant |
| // with the code below. |
| REPORTER_ASSERT(reporter, gPairs[i].fColorType != gPairs[j].fColorType); |
| continue; |
| } |
| |
| // When performing a copy of an extracted subset, the gen id should |
| // change. |
| REPORTER_ASSERT(reporter, copy.getGenerationID() != subset.getGenerationID()); |
| |
| REPORTER_ASSERT(reporter, copy.width() == W); |
| REPORTER_ASSERT(reporter, copy.height() == 2); |
| } |
| } |
| |
| bitmap = srcPremul; |
| if (bitmap.extractSubset(&subset, r)) { |
| REPORTER_ASSERT(reporter, subset.alphaType() == bitmap.alphaType()); |
| } |
| } |
| } |
| |
| /** |
| * Construct 4x4 pixels where we can look at a color and determine where it should be in the grid. |
| * alpha = 0xFF, blue = 0x80, red = x, green = y |
| */ |
| static void fill_4x4_pixels(SkPMColor colors[16]) { |
| for (int y = 0; y < 4; ++y) { |
| for (int x = 0; x < 4; ++x) { |
| colors[y*4+x] = SkPackARGB32(0xFF, x, y, 0x80); |
| } |
| } |
| } |
| |
| static bool check_4x4_pixel(SkPMColor color, unsigned x, unsigned y) { |
| SkASSERT(x < 4 && y < 4); |
| return 0xFF == SkGetPackedA32(color) && |
| x == SkGetPackedR32(color) && |
| y == SkGetPackedG32(color) && |
| 0x80 == SkGetPackedB32(color); |
| } |
| |
| /** |
| * Fill with all zeros, which will never match any value from fill_4x4_pixels |
| */ |
| static void clear_4x4_pixels(SkPMColor colors[16]) { |
| sk_memset32(colors, 0, 16); |
| } |
| |
| // Much of readPixels is exercised by copyTo testing, since readPixels is the backend for that |
| // method. Here we explicitly test subset copies. |
| // |
| DEF_TEST(BitmapReadPixels, reporter) { |
| const int W = 4; |
| const int H = 4; |
| const size_t rowBytes = W * sizeof(SkPMColor); |
| const SkImageInfo srcInfo = SkImageInfo::MakeN32Premul(W, H); |
| SkPMColor srcPixels[16]; |
| fill_4x4_pixels(srcPixels); |
| SkBitmap srcBM; |
| srcBM.installPixels(srcInfo, srcPixels, rowBytes); |
| |
| SkImageInfo dstInfo = SkImageInfo::MakeN32Premul(W, H); |
| SkPMColor dstPixels[16]; |
| |
| const struct { |
| bool fExpectedSuccess; |
| SkIPoint fRequestedSrcLoc; |
| SkISize fRequestedDstSize; |
| // If fExpectedSuccess, check these, otherwise ignore |
| SkIPoint fExpectedDstLoc; |
| SkIRect fExpectedSrcR; |
| } gRec[] = { |
| { true, { 0, 0 }, { 4, 4 }, { 0, 0 }, { 0, 0, 4, 4 } }, |
| { true, { 1, 1 }, { 2, 2 }, { 0, 0 }, { 1, 1, 3, 3 } }, |
| { true, { 2, 2 }, { 4, 4 }, { 0, 0 }, { 2, 2, 4, 4 } }, |
| { true, {-1,-1 }, { 2, 2 }, { 1, 1 }, { 0, 0, 1, 1 } }, |
| { false, {-1,-1 }, { 1, 1 }, { 0, 0 }, { 0, 0, 0, 0 } }, |
| }; |
| |
| for (size_t i = 0; i < std::size(gRec); ++i) { |
| clear_4x4_pixels(dstPixels); |
| |
| dstInfo = dstInfo.makeDimensions(gRec[i].fRequestedDstSize); |
| bool success = srcBM.readPixels(dstInfo, dstPixels, rowBytes, |
| gRec[i].fRequestedSrcLoc.x(), gRec[i].fRequestedSrcLoc.y()); |
| |
| REPORTER_ASSERT(reporter, gRec[i].fExpectedSuccess == success); |
| if (success) { |
| const SkIRect srcR = gRec[i].fExpectedSrcR; |
| const int dstX = gRec[i].fExpectedDstLoc.x(); |
| const int dstY = gRec[i].fExpectedDstLoc.y(); |
| // Walk the dst pixels, and check if we got what we expected |
| for (int y = 0; y < H; ++y) { |
| for (int x = 0; x < W; ++x) { |
| SkPMColor dstC = dstPixels[y*4+x]; |
| // get into src coordinates |
| int sx = x - dstX + srcR.x(); |
| int sy = y - dstY + srcR.y(); |
| if (srcR.contains(sx, sy)) { |
| REPORTER_ASSERT(reporter, check_4x4_pixel(dstC, sx, sy)); |
| } else { |
| REPORTER_ASSERT(reporter, 0 == dstC); |
| } |
| } |
| } |
| } |
| } |
| } |