| /* |
| * 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 "SkBitmap.h" |
| #include "SkRect.h" |
| #include "Test.h" |
| |
| static const char* boolStr(bool value) { |
| return value ? "true" : "false"; |
| } |
| |
| // these are in the same order as the SkColorType enum |
| static const char* gColorTypeName[] = { |
| "None", "A8", "565", "4444", "RGBA", "BGRA", "Index8" |
| }; |
| |
| static void report_opaqueness(skiatest::Reporter* reporter, const SkBitmap& src, |
| const SkBitmap& dst) { |
| ERRORF(reporter, "src %s opaque:%d, dst %s opaque:%d", |
| gColorTypeName[src.colorType()], src.isOpaque(), |
| gColorTypeName[dst.colorType()], dst.isOpaque()); |
| } |
| |
| static bool canHaveAlpha(SkColorType ct) { |
| return kRGB_565_SkColorType != ct; |
| } |
| |
| // copyTo() should preserve isOpaque when it makes sense |
| static void test_isOpaque(skiatest::Reporter* reporter, |
| const SkBitmap& srcOpaque, const SkBitmap& srcPremul, |
| SkColorType dstColorType) { |
| SkBitmap dst; |
| |
| if (canHaveAlpha(srcPremul.colorType()) && canHaveAlpha(dstColorType)) { |
| REPORTER_ASSERT(reporter, srcPremul.copyTo(&dst, dstColorType)); |
| REPORTER_ASSERT(reporter, dst.colorType() == dstColorType); |
| if (srcPremul.isOpaque() != dst.isOpaque()) { |
| report_opaqueness(reporter, srcPremul, dst); |
| } |
| } |
| |
| REPORTER_ASSERT(reporter, srcOpaque.copyTo(&dst, dstColorType)); |
| REPORTER_ASSERT(reporter, dst.colorType() == dstColorType); |
| if (srcOpaque.isOpaque() != dst.isOpaque()) { |
| report_opaqueness(reporter, srcOpaque, dst); |
| } |
| } |
| |
| static void init_src(const SkBitmap& bitmap) { |
| SkAutoLockPixels lock(bitmap); |
| if (bitmap.getPixels()) { |
| if (bitmap.getColorTable()) { |
| sk_bzero(bitmap.getPixels(), bitmap.getSize()); |
| } else { |
| bitmap.eraseColor(SK_ColorWHITE); |
| } |
| } |
| } |
| |
| static SkColorTable* init_ctable(SkAlphaType alphaType) { |
| static const SkColor colors[] = { |
| SK_ColorBLACK, SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE |
| }; |
| return new SkColorTable(colors, SK_ARRAY_COUNT(colors), alphaType); |
| } |
| |
| struct Pair { |
| SkColorType fColorType; |
| const char* fValid; |
| }; |
| |
| // Utility functions for copyPixelsTo()/copyPixelsFrom() tests. |
| // getPixel() |
| // setPixel() |
| // getSkConfigName() |
| // struct Coordinates |
| // reportCopyVerification() |
| // writeCoordPixels() |
| |
| // Utility function to read the value of a given pixel in bm. All |
| // values converted to uint32_t for simplification of comparisons. |
| static uint32_t getPixel(int x, int y, const SkBitmap& bm) { |
| uint32_t val = 0; |
| uint16_t val16; |
| uint8_t val8; |
| SkAutoLockPixels lock(bm); |
| const void* rawAddr = bm.getAddr(x,y); |
| |
| switch (bm.bytesPerPixel()) { |
| case 4: |
| memcpy(&val, rawAddr, sizeof(uint32_t)); |
| break; |
| case 2: |
| memcpy(&val16, rawAddr, sizeof(uint16_t)); |
| val = val16; |
| break; |
| case 1: |
| memcpy(&val8, rawAddr, sizeof(uint8_t)); |
| val = val8; |
| break; |
| default: |
| break; |
| } |
| return val; |
| } |
| |
| // Utility function to set value of any pixel in bm. |
| // bm.getConfig() specifies what format 'val' must be |
| // converted to, but at present uint32_t can handle all formats. |
| static void setPixel(int x, int y, uint32_t val, SkBitmap& bm) { |
| uint16_t val16; |
| uint8_t val8; |
| SkAutoLockPixels lock(bm); |
| void* rawAddr = bm.getAddr(x,y); |
| |
| switch (bm.bytesPerPixel()) { |
| case 4: |
| memcpy(rawAddr, &val, sizeof(uint32_t)); |
| break; |
| case 2: |
| val16 = val & 0xFFFF; |
| memcpy(rawAddr, &val16, sizeof(uint16_t)); |
| break; |
| case 1: |
| val8 = val & 0xFF; |
| memcpy(rawAddr, &val8, sizeof(uint8_t)); |
| break; |
| default: |
| // Ignore. |
| break; |
| } |
| } |
| |
| // 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; |
| } |
| }; |
| |
| // A function to verify that two bitmaps contain the same pixel values |
| // at all coordinates indicated by coords. Simplifies verification of |
| // copied bitmaps. |
| static void reportCopyVerification(const SkBitmap& bm1, const SkBitmap& bm2, |
| Coordinates& coords, |
| const char* msg, |
| skiatest::Reporter* reporter){ |
| bool success = true; |
| |
| // Confirm all pixels in the list match. |
| for (int i = 0; i < coords.length; ++i) { |
| success = success && |
| (getPixel(coords[i]->fX, coords[i]->fY, bm1) == |
| getPixel(coords[i]->fX, coords[i]->fY, bm2)); |
| } |
| |
| if (!success) { |
| ERRORF(reporter, "%s [colortype = %s]", msg, |
| gColorTypeName[bm1.colorType()]); |
| } |
| } |
| |
| // Writes unique pixel values at locations specified by coords. |
| static void writeCoordPixels(SkBitmap& bm, const Coordinates& coords) { |
| for (int i = 0; i < coords.length; ++i) |
| setPixel(coords[i]->fX, coords[i]->fY, i, bm); |
| } |
| |
| static const Pair gPairs[] = { |
| { kUnknown_SkColorType, "000000" }, |
| { kAlpha_8_SkColorType, "010101" }, |
| { kIndex_8_SkColorType, "011101" }, |
| { kRGB_565_SkColorType, "010101" }, |
| { kARGB_4444_SkColorType, "010111" }, |
| { kN32_SkColorType, "010111" }, |
| }; |
| |
| static const int W = 20; |
| static const int H = 33; |
| |
| static void setup_src_bitmaps(SkBitmap* srcOpaque, SkBitmap* srcPremul, |
| SkColorType ct) { |
| SkColorTable* ctOpaque = NULL; |
| SkColorTable* ctPremul = NULL; |
| if (kIndex_8_SkColorType == ct) { |
| ctOpaque = init_ctable(kOpaque_SkAlphaType); |
| ctPremul = init_ctable(kPremul_SkAlphaType); |
| } |
| |
| srcOpaque->allocPixels(SkImageInfo::Make(W, H, ct, kOpaque_SkAlphaType), |
| NULL, ctOpaque); |
| srcPremul->allocPixels(SkImageInfo::Make(W, H, ct, kPremul_SkAlphaType), |
| NULL, ctPremul); |
| SkSafeUnref(ctOpaque); |
| SkSafeUnref(ctPremul); |
| init_src(*srcOpaque); |
| init_src(*srcPremul); |
| } |
| |
| DEF_TEST(BitmapCopy_extractSubset, reporter) { |
| for (size_t i = 0; i < SK_ARRAY_COUNT(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.set(0, 1, W, 3); |
| bitmap.setIsVolatile(true); |
| // 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()); |
| REPORTER_ASSERT(reporter, subset.isVolatile() == true); |
| |
| // Test copying an extracted subset. |
| for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) { |
| SkBitmap copy; |
| bool success = subset.copyTo(©, gPairs[j].fColorType); |
| 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); |
| |
| if (gPairs[i].fColorType == gPairs[j].fColorType) { |
| SkAutoLockPixels alp0(subset); |
| SkAutoLockPixels alp1(copy); |
| // they should both have, or both not-have, a colortable |
| bool hasCT = subset.getColorTable() != NULL; |
| REPORTER_ASSERT(reporter, (copy.getColorTable() != NULL) == hasCT); |
| } |
| } |
| } |
| |
| bitmap = srcPremul; |
| bitmap.setIsVolatile(false); |
| if (bitmap.extractSubset(&subset, r)) { |
| REPORTER_ASSERT(reporter, subset.alphaType() == bitmap.alphaType()); |
| REPORTER_ASSERT(reporter, subset.isVolatile() == false); |
| } |
| } |
| } |
| |
| DEF_TEST(BitmapCopy, reporter) { |
| static const bool isExtracted[] = { |
| false, true |
| }; |
| |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) { |
| SkBitmap srcOpaque, srcPremul; |
| setup_src_bitmaps(&srcOpaque, &srcPremul, gPairs[i].fColorType); |
| |
| for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) { |
| SkBitmap dst; |
| |
| bool success = srcPremul.copyTo(&dst, gPairs[j].fColorType); |
| bool expected = gPairs[i].fValid[j] != '0'; |
| if (success != expected) { |
| ERRORF(reporter, "SkBitmap::copyTo from %s to %s. expected %s " |
| "returned %s", gColorTypeName[i], gColorTypeName[j], |
| boolStr(expected), boolStr(success)); |
| } |
| |
| bool canSucceed = srcPremul.canCopyTo(gPairs[j].fColorType); |
| if (success != canSucceed) { |
| ERRORF(reporter, "SkBitmap::copyTo from %s to %s. returned %s " |
| "canCopyTo %s", gColorTypeName[i], gColorTypeName[j], |
| boolStr(success), boolStr(canSucceed)); |
| } |
| |
| if (success) { |
| REPORTER_ASSERT(reporter, srcPremul.width() == dst.width()); |
| REPORTER_ASSERT(reporter, srcPremul.height() == dst.height()); |
| REPORTER_ASSERT(reporter, dst.colorType() == gPairs[j].fColorType); |
| test_isOpaque(reporter, srcOpaque, srcPremul, dst.colorType()); |
| if (srcPremul.colorType() == dst.colorType()) { |
| SkAutoLockPixels srcLock(srcPremul); |
| SkAutoLockPixels dstLock(dst); |
| REPORTER_ASSERT(reporter, srcPremul.readyToDraw()); |
| REPORTER_ASSERT(reporter, dst.readyToDraw()); |
| const char* srcP = (const char*)srcPremul.getAddr(0, 0); |
| const char* dstP = (const char*)dst.getAddr(0, 0); |
| REPORTER_ASSERT(reporter, srcP != dstP); |
| REPORTER_ASSERT(reporter, !memcmp(srcP, dstP, |
| srcPremul.getSize())); |
| REPORTER_ASSERT(reporter, srcPremul.getGenerationID() == dst.getGenerationID()); |
| } else { |
| REPORTER_ASSERT(reporter, srcPremul.getGenerationID() != dst.getGenerationID()); |
| } |
| } else { |
| // dst should be unchanged from its initial state |
| REPORTER_ASSERT(reporter, dst.colorType() == kUnknown_SkColorType); |
| REPORTER_ASSERT(reporter, dst.width() == 0); |
| REPORTER_ASSERT(reporter, dst.height() == 0); |
| } |
| } // for (size_t j = ... |
| |
| // Tests for getSafeSize(), getSafeSize64(), copyPixelsTo(), |
| // copyPixelsFrom(). |
| // |
| for (size_t copyCase = 0; copyCase < SK_ARRAY_COUNT(isExtracted); |
| ++copyCase) { |
| // Test copying to/from external buffer. |
| // Note: the tests below have hard-coded values --- |
| // Please take care if modifying. |
| |
| // Tests for getSafeSize64(). |
| // Test with a very large configuration without pixel buffer |
| // attached. |
| SkBitmap tstSafeSize; |
| tstSafeSize.setInfo(SkImageInfo::Make(100000000U, 100000000U, |
| gPairs[i].fColorType, kPremul_SkAlphaType)); |
| int64_t safeSize = tstSafeSize.computeSafeSize64(); |
| if (safeSize < 0) { |
| ERRORF(reporter, "getSafeSize64() negative: %s", |
| gColorTypeName[tstSafeSize.colorType()]); |
| } |
| bool sizeFail = false; |
| // Compare against hand-computed values. |
| switch (gPairs[i].fColorType) { |
| case kUnknown_SkColorType: |
| break; |
| |
| case kAlpha_8_SkColorType: |
| case kIndex_8_SkColorType: |
| if (safeSize != 0x2386F26FC10000LL) { |
| sizeFail = true; |
| } |
| break; |
| |
| case kRGB_565_SkColorType: |
| case kARGB_4444_SkColorType: |
| if (safeSize != 0x470DE4DF820000LL) { |
| sizeFail = true; |
| } |
| break; |
| |
| case kN32_SkColorType: |
| if (safeSize != 0x8E1BC9BF040000LL) { |
| sizeFail = true; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| if (sizeFail) { |
| ERRORF(reporter, "computeSafeSize64() wrong size: %s", |
| gColorTypeName[tstSafeSize.colorType()]); |
| } |
| |
| int subW = 2; |
| int subH = 2; |
| |
| // Create bitmap to act as source for copies and subsets. |
| SkBitmap src, subset; |
| SkColorTable* ct = NULL; |
| if (kIndex_8_SkColorType == src.colorType()) { |
| ct = init_ctable(kPremul_SkAlphaType); |
| } |
| |
| if (isExtracted[copyCase]) { // A larger image to extract from. |
| src.allocPixels(SkImageInfo::Make(2 * subW + 1, subH, |
| gPairs[i].fColorType, |
| kPremul_SkAlphaType)); |
| } else { // Tests expect a 2x2 bitmap, so make smaller. |
| src.allocPixels(SkImageInfo::Make(subW, subH, |
| gPairs[i].fColorType, |
| kPremul_SkAlphaType)); |
| } |
| SkSafeUnref(ct); |
| |
| // Either copy src or extract into 'subset', which is used |
| // for subsequent calls to copyPixelsTo/From. |
| bool srcReady = false; |
| // Test relies on older behavior that extractSubset will fail on |
| // kUnknown_SkColorType |
| if (kUnknown_SkColorType != src.colorType() && |
| isExtracted[copyCase]) { |
| // The extractedSubset() test case allows us to test copy- |
| // ing when src and dst mave possibly different strides. |
| SkIRect r; |
| r.set(1, 0, 1 + subW, subH); // 2x2 extracted bitmap |
| |
| srcReady = src.extractSubset(&subset, r); |
| } else { |
| srcReady = src.copyTo(&subset); |
| } |
| |
| // Not all configurations will generate a valid 'subset'. |
| if (srcReady) { |
| |
| // Allocate our target buffer 'buf' for all copies. |
| // To simplify verifying correctness of copies attach |
| // buf to a SkBitmap, but copies are done using the |
| // raw buffer pointer. |
| const size_t bufSize = subH * |
| SkColorTypeMinRowBytes(src.colorType(), subW) * 2; |
| SkAutoMalloc autoBuf (bufSize); |
| uint8_t* buf = static_cast<uint8_t*>(autoBuf.get()); |
| |
| SkBitmap bufBm; // Attach buf to this bitmap. |
| bool successExpected; |
| |
| // Set up values for each pixel being copied. |
| Coordinates coords(subW * subH); |
| for (int x = 0; x < subW; ++x) |
| for (int y = 0; y < subH; ++y) |
| { |
| int index = y * subW + x; |
| SkASSERT(index < coords.length); |
| coords[index]->fX = x; |
| coords[index]->fY = y; |
| } |
| |
| writeCoordPixels(subset, coords); |
| |
| // Test #1 //////////////////////////////////////////// |
| |
| const SkImageInfo info = SkImageInfo::Make(subW, subH, |
| gPairs[i].fColorType, |
| kPremul_SkAlphaType); |
| // Before/after comparisons easier if we attach buf |
| // to an appropriately configured SkBitmap. |
| memset(buf, 0xFF, bufSize); |
| // Config with stride greater than src but that fits in buf. |
| bufBm.installPixels(info, buf, info.minRowBytes() * 2); |
| successExpected = false; |
| // Then attempt to copy with a stride that is too large |
| // to fit in the buffer. |
| REPORTER_ASSERT(reporter, |
| subset.copyPixelsTo(buf, bufSize, bufBm.rowBytes() * 3) |
| == successExpected); |
| |
| if (successExpected) |
| reportCopyVerification(subset, bufBm, coords, |
| "copyPixelsTo(buf, bufSize, 1.5*maxRowBytes)", |
| reporter); |
| |
| // Test #2 //////////////////////////////////////////// |
| // This test should always succeed, but in the case |
| // of extracted bitmaps only because we handle the |
| // issue of getSafeSize(). Without getSafeSize() |
| // buffer overrun/read would occur. |
| memset(buf, 0xFF, bufSize); |
| bufBm.installPixels(info, buf, subset.rowBytes()); |
| successExpected = subset.getSafeSize() <= bufSize; |
| REPORTER_ASSERT(reporter, |
| subset.copyPixelsTo(buf, bufSize) == |
| successExpected); |
| if (successExpected) |
| reportCopyVerification(subset, bufBm, coords, |
| "copyPixelsTo(buf, bufSize)", reporter); |
| |
| // Test #3 //////////////////////////////////////////// |
| // Copy with different stride between src and dst. |
| memset(buf, 0xFF, bufSize); |
| bufBm.installPixels(info, buf, subset.rowBytes()+1); |
| successExpected = true; // Should always work. |
| REPORTER_ASSERT(reporter, |
| subset.copyPixelsTo(buf, bufSize, |
| subset.rowBytes()+1) == successExpected); |
| if (successExpected) |
| reportCopyVerification(subset, bufBm, coords, |
| "copyPixelsTo(buf, bufSize, rowBytes+1)", reporter); |
| |
| // Test #4 //////////////////////////////////////////// |
| // Test copy with stride too small. |
| memset(buf, 0xFF, bufSize); |
| bufBm.installPixels(info, buf, info.minRowBytes()); |
| successExpected = false; |
| // Request copy with stride too small. |
| REPORTER_ASSERT(reporter, |
| subset.copyPixelsTo(buf, bufSize, bufBm.rowBytes()-1) |
| == successExpected); |
| if (successExpected) |
| reportCopyVerification(subset, bufBm, coords, |
| "copyPixelsTo(buf, bufSize, rowBytes()-1)", reporter); |
| |
| #if 0 // copyPixelsFrom is gone |
| // Test #5 //////////////////////////////////////////// |
| // Tests the case where the source stride is too small |
| // for the source configuration. |
| memset(buf, 0xFF, bufSize); |
| bufBm.installPixels(info, buf, info.minRowBytes()); |
| writeCoordPixels(bufBm, coords); |
| REPORTER_ASSERT(reporter, |
| subset.copyPixelsFrom(buf, bufSize, 1) == false); |
| |
| // Test #6 /////////////////////////////////////////// |
| // Tests basic copy from an external buffer to the bitmap. |
| // If the bitmap is "extracted", this also tests the case |
| // where the source stride is different from the dest. |
| // stride. |
| // We've made the buffer large enough to always succeed. |
| bufBm.installPixels(info, buf, info.minRowBytes()); |
| writeCoordPixels(bufBm, coords); |
| REPORTER_ASSERT(reporter, |
| subset.copyPixelsFrom(buf, bufSize, bufBm.rowBytes()) == |
| true); |
| reportCopyVerification(bufBm, subset, coords, |
| "copyPixelsFrom(buf, bufSize)", |
| reporter); |
| |
| // Test #7 //////////////////////////////////////////// |
| // Tests the case where the source buffer is too small |
| // for the transfer. |
| REPORTER_ASSERT(reporter, |
| subset.copyPixelsFrom(buf, 1, subset.rowBytes()) == |
| false); |
| |
| #endif |
| } |
| } // for (size_t copyCase ... |
| } |
| } |
