| |
| /* |
| * 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 "Test.h" |
| #include "SkBitmap.h" |
| #include "SkRect.h" |
| |
| static const char* boolStr(bool value) { |
| return value ? "true" : "false"; |
| } |
| |
| // these are in the same order as the SkBitmap::Config enum |
| static const char* gConfigName[] = { |
| "None", "A1", "A8", "Index8", "565", "4444", "8888", "RLE_Index8" |
| }; |
| |
| static void report_opaqueness(skiatest::Reporter* reporter, const SkBitmap& src, |
| const SkBitmap& dst) { |
| SkString str; |
| str.printf("src %s opaque:%d, dst %s opaque:%d", |
| gConfigName[src.config()], src.isOpaque(), |
| gConfigName[dst.config()], dst.isOpaque()); |
| reporter->reportFailed(str); |
| } |
| |
| static bool canHaveAlpha(SkBitmap::Config config) { |
| return config != SkBitmap::kRGB_565_Config; |
| } |
| |
| // copyTo() should preserve isOpaque when it makes sense |
| static void test_isOpaque(skiatest::Reporter* reporter, |
| const SkBitmap& srcOpaque, const SkBitmap& srcPremul, |
| SkBitmap::Config dstConfig) { |
| SkBitmap dst; |
| |
| if (canHaveAlpha(srcPremul.config()) && canHaveAlpha(dstConfig)) { |
| REPORTER_ASSERT(reporter, srcPremul.copyTo(&dst, dstConfig)); |
| REPORTER_ASSERT(reporter, dst.config() == dstConfig); |
| if (srcPremul.isOpaque() != dst.isOpaque()) { |
| report_opaqueness(reporter, srcPremul, dst); |
| } |
| } |
| |
| REPORTER_ASSERT(reporter, srcOpaque.copyTo(&dst, dstConfig)); |
| REPORTER_ASSERT(reporter, dst.config() == dstConfig); |
| 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 if (SkBitmap::kA1_Config == bitmap.config()) { |
| // The A1 config can have uninitialized bits at the |
| // end of each row if eraseColor is used |
| memset(bitmap.getPixels(), 0xff, bitmap.getSafeSize()); |
| } 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 { |
| SkBitmap::Config fConfig; |
| 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, shift; |
| SkAutoLockPixels lock(bm); |
| const void* rawAddr = bm.getAddr(x,y); |
| |
| switch (bm.getConfig()) { |
| case SkBitmap::kARGB_8888_Config: |
| memcpy(&val, rawAddr, sizeof(uint32_t)); |
| break; |
| case SkBitmap::kARGB_4444_Config: |
| case SkBitmap::kRGB_565_Config: |
| memcpy(&val16, rawAddr, sizeof(uint16_t)); |
| val = val16; |
| break; |
| case SkBitmap::kA8_Config: |
| case SkBitmap::kIndex8_Config: |
| memcpy(&val8, rawAddr, sizeof(uint8_t)); |
| val = val8; |
| break; |
| case SkBitmap::kA1_Config: |
| memcpy(&val8, rawAddr, sizeof(uint8_t)); |
| shift = x % 8; |
| val = (val8 >> shift) & 0x1 ; |
| 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, shift; |
| SkAutoLockPixels lock(bm); |
| void* rawAddr = bm.getAddr(x,y); |
| |
| switch (bm.getConfig()) { |
| case SkBitmap::kARGB_8888_Config: |
| memcpy(rawAddr, &val, sizeof(uint32_t)); |
| break; |
| case SkBitmap::kARGB_4444_Config: |
| case SkBitmap::kRGB_565_Config: |
| val16 = val & 0xFFFF; |
| memcpy(rawAddr, &val16, sizeof(uint16_t)); |
| break; |
| case SkBitmap::kA8_Config: |
| case SkBitmap::kIndex8_Config: |
| val8 = val & 0xFF; |
| memcpy(rawAddr, &val8, sizeof(uint8_t)); |
| break; |
| case SkBitmap::kA1_Config: |
| shift = x % 8; // We assume we're in the right byte. |
| memcpy(&val8, rawAddr, sizeof(uint8_t)); |
| if (val & 0x1) // Turn bit on. |
| val8 |= (0x1 << shift); |
| else // Turn bit off. |
| val8 &= ~(0x1 << shift); |
| memcpy(rawAddr, &val8, sizeof(uint8_t)); |
| break; |
| default: |
| // Ignore. |
| break; |
| } |
| } |
| |
| // Utility to return string containing name of each format, to |
| // simplify diagnostic output. |
| static const char* getSkConfigName(const SkBitmap& bm) { |
| switch (bm.getConfig()) { |
| case SkBitmap::kNo_Config: return "SkBitmap::kNo_Config"; |
| case SkBitmap::kA1_Config: return "SkBitmap::kA1_Config"; |
| case SkBitmap::kA8_Config: return "SkBitmap::kA8_Config"; |
| case SkBitmap::kIndex8_Config: return "SkBitmap::kIndex8_Config"; |
| case SkBitmap::kRGB_565_Config: return "SkBitmap::kRGB_565_Config"; |
| case SkBitmap::kARGB_4444_Config: return "SkBitmap::kARGB_4444_Config"; |
| case SkBitmap::kARGB_8888_Config: return "SkBitmap::kARGB_8888_Config"; |
| default: return "Unknown SkBitmap configuration."; |
| } |
| } |
| |
| // 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) { |
| SkString str; |
| str.printf("%s [config = %s]", |
| msg, getSkConfigName(bm1)); |
| reporter->reportFailed(str); |
| } |
| } |
| |
| // 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 void TestBitmapCopy(skiatest::Reporter* reporter) { |
| static const Pair gPairs[] = { |
| { SkBitmap::kNo_Config, "00000000" }, |
| { SkBitmap::kA1_Config, "01000000" }, |
| { SkBitmap::kA8_Config, "00101010" }, |
| { SkBitmap::kIndex8_Config, "00111010" }, |
| { SkBitmap::kRGB_565_Config, "00101010" }, |
| { SkBitmap::kARGB_4444_Config, "00101110" }, |
| { SkBitmap::kARGB_8888_Config, "00101110" }, |
| }; |
| |
| static const bool isExtracted[] = { |
| false, true |
| }; |
| |
| const int W = 20; |
| const int H = 33; |
| |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) { |
| for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) { |
| SkBitmap srcOpaque, srcPremul, dst; |
| |
| { |
| SkColorTable* ctOpaque = NULL; |
| SkColorTable* ctPremul = NULL; |
| |
| srcOpaque.setConfig(gPairs[i].fConfig, W, H, 0, kOpaque_SkAlphaType); |
| srcPremul.setConfig(gPairs[i].fConfig, W, H, 0, kPremul_SkAlphaType); |
| if (SkBitmap::kIndex8_Config == gPairs[i].fConfig) { |
| ctOpaque = init_ctable(kOpaque_SkAlphaType); |
| ctPremul = init_ctable(kPremul_SkAlphaType); |
| } |
| srcOpaque.allocPixels(ctOpaque); |
| srcPremul.allocPixels(ctPremul); |
| SkSafeUnref(ctOpaque); |
| SkSafeUnref(ctPremul); |
| } |
| init_src(srcOpaque); |
| init_src(srcPremul); |
| |
| bool success = srcPremul.copyTo(&dst, gPairs[j].fConfig); |
| bool expected = gPairs[i].fValid[j] != '0'; |
| if (success != expected) { |
| SkString str; |
| str.printf("SkBitmap::copyTo from %s to %s. expected %s returned %s", |
| gConfigName[i], gConfigName[j], boolStr(expected), |
| boolStr(success)); |
| reporter->reportFailed(str); |
| } |
| |
| bool canSucceed = srcPremul.canCopyTo(gPairs[j].fConfig); |
| if (success != canSucceed) { |
| SkString str; |
| str.printf("SkBitmap::copyTo from %s to %s. returned %s canCopyTo %s", |
| gConfigName[i], gConfigName[j], boolStr(success), |
| boolStr(canSucceed)); |
| reporter->reportFailed(str); |
| } |
| |
| if (success) { |
| REPORTER_ASSERT(reporter, srcPremul.width() == dst.width()); |
| REPORTER_ASSERT(reporter, srcPremul.height() == dst.height()); |
| REPORTER_ASSERT(reporter, dst.config() == gPairs[j].fConfig); |
| test_isOpaque(reporter, srcOpaque, srcPremul, dst.config()); |
| if (srcPremul.config() == dst.config()) { |
| 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()); |
| } |
| // test extractSubset |
| { |
| SkBitmap bitmap(srcOpaque); |
| SkBitmap subset; |
| SkIRect r; |
| r.set(1, 1, 2, 2); |
| bitmap.setIsVolatile(true); |
| if (bitmap.extractSubset(&subset, r)) { |
| REPORTER_ASSERT(reporter, subset.width() == 1); |
| REPORTER_ASSERT(reporter, subset.height() == 1); |
| REPORTER_ASSERT(reporter, |
| subset.alphaType() == bitmap.alphaType()); |
| REPORTER_ASSERT(reporter, |
| subset.isVolatile() == true); |
| |
| SkBitmap copy; |
| REPORTER_ASSERT(reporter, |
| subset.copyTo(©, subset.config())); |
| REPORTER_ASSERT(reporter, copy.width() == 1); |
| REPORTER_ASSERT(reporter, copy.height() == 1); |
| REPORTER_ASSERT(reporter, copy.rowBytes() <= 4); |
| |
| 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); |
| } |
| } |
| } else { |
| // dst should be unchanged from its initial state |
| REPORTER_ASSERT(reporter, dst.config() == SkBitmap::kNo_Config); |
| 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.setConfig(gPairs[i].fConfig, 100000000U, |
| 100000000U); |
| Sk64 safeSize = tstSafeSize.getSafeSize64(); |
| if (safeSize.isNeg()) { |
| SkString str; |
| str.printf("getSafeSize64() negative: %s", |
| getSkConfigName(tstSafeSize)); |
| reporter->reportFailed(str); |
| } |
| bool sizeFail = false; |
| // Compare against hand-computed values. |
| switch (gPairs[i].fConfig) { |
| case SkBitmap::kNo_Config: |
| break; |
| |
| case SkBitmap::kA1_Config: |
| if (safeSize.fHi != 0x470DE || |
| safeSize.fLo != 0x4DF82000) |
| sizeFail = true; |
| break; |
| |
| case SkBitmap::kA8_Config: |
| case SkBitmap::kIndex8_Config: |
| if (safeSize.fHi != 0x2386F2 || |
| safeSize.fLo != 0x6FC10000) |
| sizeFail = true; |
| break; |
| |
| case SkBitmap::kRGB_565_Config: |
| case SkBitmap::kARGB_4444_Config: |
| if (safeSize.fHi != 0x470DE4 || |
| safeSize.fLo != 0xDF820000) |
| sizeFail = true; |
| break; |
| |
| case SkBitmap::kARGB_8888_Config: |
| if (safeSize.fHi != 0x8E1BC9 || |
| safeSize.fLo != 0xBF040000) |
| sizeFail = true; |
| break; |
| |
| default: |
| break; |
| } |
| if (sizeFail) { |
| SkString str; |
| str.printf("getSafeSize64() wrong size: %s", |
| getSkConfigName(tstSafeSize)); |
| reporter->reportFailed(str); |
| } |
| |
| int subW, subH; |
| // Set sizes to be height = 2 to force the last row of the |
| // source to be used, thus verifying correct operation if |
| // the bitmap is an extracted subset. |
| if (gPairs[i].fConfig == SkBitmap::kA1_Config) { |
| // If one-bit per pixel, use 9 pixels to force more than |
| // one byte per row. |
| subW = 9; |
| subH = 2; |
| } else { |
| // All other configurations are at least one byte per pixel, |
| // and different configs will test copying different numbers |
| // of bytes. |
| subW = subH = 2; |
| } |
| |
| // Create bitmap to act as source for copies and subsets. |
| SkBitmap src, subset; |
| SkColorTable* ct = NULL; |
| if (isExtracted[copyCase]) { // A larger image to extract from. |
| src.setConfig(gPairs[i].fConfig, 2 * subW + 1, subH); |
| } else { // Tests expect a 2x2 bitmap, so make smaller. |
| src.setConfig(gPairs[i].fConfig, subW, subH); |
| } |
| if (SkBitmap::kIndex8_Config == src.config()) { |
| ct = init_ctable(kPremul_SkAlphaType); |
| } |
| |
| src.allocPixels(ct); |
| SkSafeUnref(ct); |
| |
| // Either copy src or extract into 'subset', which is used |
| // for subsequent calls to copyPixelsTo/From. |
| bool srcReady = false; |
| if (isExtracted[copyCase]) { |
| // The extractedSubset() test case allows us to test copy- |
| // ing when src and dst mave possibly different strides. |
| SkIRect r; |
| if (gPairs[i].fConfig == SkBitmap::kA1_Config) |
| // This config seems to need byte-alignment of |
| // extracted subset bits. |
| r.set(0, 0, subW, subH); |
| else |
| r.set(1, 0, 1 + subW, subH); // 2x2 extracted bitmap |
| |
| srcReady = src.extractSubset(&subset, r); |
| } else { |
| srcReady = src.copyTo(&subset, src.getConfig()); |
| } |
| |
| // 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 * |
| SkBitmap::ComputeRowBytes(src.getConfig(), 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 //////////////////////////////////////////// |
| |
| // 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.setConfig(gPairs[i].fConfig, subW, subH, |
| SkBitmap::ComputeRowBytes(subset.getConfig(), subW) |
| * 2); |
| bufBm.setPixels(buf); |
| 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.setConfig(gPairs[i].fConfig, subW, subH, |
| subset.rowBytes()); |
| bufBm.setPixels(buf); |
| 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.setConfig(gPairs[i].fConfig, subW, subH, |
| subset.rowBytes()+1); |
| bufBm.setPixels(buf); |
| 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.setConfig(gPairs[i].fConfig, subW, subH); |
| bufBm.setPixels(buf); |
| 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.setConfig(gPairs[i].fConfig, subW, subH); |
| bufBm.setPixels(buf); |
| 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.setConfig(gPairs[i].fConfig, subW, subH); |
| bufBm.setPixels(buf); |
| 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 ... |
| } |
| } |
| |
| #include "TestClassDef.h" |
| DEFINE_TESTCLASS("BitmapCopy", TestBitmapCopyClass, TestBitmapCopy) |