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 = nullptr; if (kIndex_8_SkColorType == src.colorType()) { ct = init_ctable(); } int localSubW; if (isExtracted[copyCase]) { // A larger image to extract from. localSubW = 2 * subW + 1; } else { // Tests expect a 2x2 bitmap, so make smaller. localSubW = subW; } // could fail if we pass kIndex_8 for the colortype if (src.tryAllocPixels(SkImageInfo::Make(localSubW, subH, gPairs[i].fColorType, kPremul_SkAlphaType))) { // failure is fine, as we will notice later on } 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; SkAutoTMalloc<uint8_t> autoBuf (bufSize); uint8_t* buf = 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 ... } }