зеркало из https://github.com/mozilla/moz-skia.git
560 строки
22 KiB
C++
560 строки
22 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Test.h"
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#include "SkBitmap.h"
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#include "SkRect.h"
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static const char* boolStr(bool value) {
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return value ? "true" : "false";
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}
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// these are in the same order as the SkBitmap::Config enum
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static const char* gConfigName[] = {
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"None", "A8", "Index8", "565", "4444", "8888"
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};
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static void report_opaqueness(skiatest::Reporter* reporter, const SkBitmap& src,
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const SkBitmap& dst) {
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ERRORF(reporter, "src %s opaque:%d, dst %s opaque:%d",
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gConfigName[src.config()], src.isOpaque(),
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gConfigName[dst.config()], dst.isOpaque());
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}
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static bool canHaveAlpha(SkBitmap::Config config) {
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return config != SkBitmap::kRGB_565_Config;
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}
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// copyTo() should preserve isOpaque when it makes sense
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static void test_isOpaque(skiatest::Reporter* reporter,
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const SkBitmap& srcOpaque, const SkBitmap& srcPremul,
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SkBitmap::Config dstConfig) {
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SkBitmap dst;
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if (canHaveAlpha(srcPremul.config()) && canHaveAlpha(dstConfig)) {
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REPORTER_ASSERT(reporter, srcPremul.copyTo(&dst, dstConfig));
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REPORTER_ASSERT(reporter, dst.config() == dstConfig);
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if (srcPremul.isOpaque() != dst.isOpaque()) {
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report_opaqueness(reporter, srcPremul, dst);
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}
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}
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REPORTER_ASSERT(reporter, srcOpaque.copyTo(&dst, dstConfig));
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REPORTER_ASSERT(reporter, dst.config() == dstConfig);
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if (srcOpaque.isOpaque() != dst.isOpaque()) {
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report_opaqueness(reporter, srcOpaque, dst);
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}
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}
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static void init_src(const SkBitmap& bitmap) {
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SkAutoLockPixels lock(bitmap);
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if (bitmap.getPixels()) {
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if (bitmap.getColorTable()) {
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sk_bzero(bitmap.getPixels(), bitmap.getSize());
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} else {
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bitmap.eraseColor(SK_ColorWHITE);
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}
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}
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}
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static SkColorTable* init_ctable(SkAlphaType alphaType) {
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static const SkColor colors[] = {
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SK_ColorBLACK, SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE
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};
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return new SkColorTable(colors, SK_ARRAY_COUNT(colors), alphaType);
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}
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struct Pair {
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SkBitmap::Config fConfig;
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const char* fValid;
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};
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// Utility functions for copyPixelsTo()/copyPixelsFrom() tests.
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// getPixel()
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// setPixel()
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// getSkConfigName()
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// struct Coordinates
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// reportCopyVerification()
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// writeCoordPixels()
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// Utility function to read the value of a given pixel in bm. All
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// values converted to uint32_t for simplification of comparisons.
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static uint32_t getPixel(int x, int y, const SkBitmap& bm) {
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uint32_t val = 0;
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uint16_t val16;
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uint8_t val8;
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SkAutoLockPixels lock(bm);
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const void* rawAddr = bm.getAddr(x,y);
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switch (bm.config()) {
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case SkBitmap::kARGB_8888_Config:
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memcpy(&val, rawAddr, sizeof(uint32_t));
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break;
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case SkBitmap::kARGB_4444_Config:
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case SkBitmap::kRGB_565_Config:
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memcpy(&val16, rawAddr, sizeof(uint16_t));
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val = val16;
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break;
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case SkBitmap::kA8_Config:
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case SkBitmap::kIndex8_Config:
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memcpy(&val8, rawAddr, sizeof(uint8_t));
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val = val8;
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break;
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default:
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break;
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}
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return val;
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}
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// Utility function to set value of any pixel in bm.
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// bm.getConfig() specifies what format 'val' must be
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// converted to, but at present uint32_t can handle all formats.
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static void setPixel(int x, int y, uint32_t val, SkBitmap& bm) {
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uint16_t val16;
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uint8_t val8;
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SkAutoLockPixels lock(bm);
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void* rawAddr = bm.getAddr(x,y);
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switch (bm.config()) {
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case SkBitmap::kARGB_8888_Config:
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memcpy(rawAddr, &val, sizeof(uint32_t));
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break;
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case SkBitmap::kARGB_4444_Config:
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case SkBitmap::kRGB_565_Config:
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val16 = val & 0xFFFF;
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memcpy(rawAddr, &val16, sizeof(uint16_t));
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break;
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case SkBitmap::kA8_Config:
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case SkBitmap::kIndex8_Config:
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val8 = val & 0xFF;
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memcpy(rawAddr, &val8, sizeof(uint8_t));
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break;
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default:
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// Ignore.
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break;
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}
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}
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// Utility to return string containing name of each format, to
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// simplify diagnostic output.
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static const char* getSkConfigName(const SkBitmap& bm) {
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switch (bm.config()) {
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case SkBitmap::kNo_Config: return "SkBitmap::kNo_Config";
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case SkBitmap::kA8_Config: return "SkBitmap::kA8_Config";
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case SkBitmap::kIndex8_Config: return "SkBitmap::kIndex8_Config";
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case SkBitmap::kRGB_565_Config: return "SkBitmap::kRGB_565_Config";
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case SkBitmap::kARGB_4444_Config: return "SkBitmap::kARGB_4444_Config";
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case SkBitmap::kARGB_8888_Config: return "SkBitmap::kARGB_8888_Config";
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default: return "Unknown SkBitmap configuration.";
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}
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}
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// Helper struct to contain pixel locations, while avoiding need for STL.
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struct Coordinates {
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const int length;
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SkIPoint* const data;
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explicit Coordinates(int _length): length(_length)
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, data(new SkIPoint[length]) { }
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~Coordinates(){
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delete [] data;
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}
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SkIPoint* operator[](int i) const {
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// Use with care, no bounds checking.
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return data + i;
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}
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};
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// A function to verify that two bitmaps contain the same pixel values
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// at all coordinates indicated by coords. Simplifies verification of
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// copied bitmaps.
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static void reportCopyVerification(const SkBitmap& bm1, const SkBitmap& bm2,
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Coordinates& coords,
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const char* msg,
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skiatest::Reporter* reporter){
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bool success = true;
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// Confirm all pixels in the list match.
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for (int i = 0; i < coords.length; ++i) {
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success = success &&
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(getPixel(coords[i]->fX, coords[i]->fY, bm1) ==
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getPixel(coords[i]->fX, coords[i]->fY, bm2));
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}
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if (!success) {
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ERRORF(reporter, "%s [config = %s]", msg, getSkConfigName(bm1));
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}
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}
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// Writes unique pixel values at locations specified by coords.
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static void writeCoordPixels(SkBitmap& bm, const Coordinates& coords) {
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for (int i = 0; i < coords.length; ++i)
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setPixel(coords[i]->fX, coords[i]->fY, i, bm);
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}
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static const Pair gPairs[] = {
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{ SkBitmap::kNo_Config, "0000000" },
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{ SkBitmap::kA8_Config, "0101010" },
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{ SkBitmap::kIndex8_Config, "0111010" },
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{ SkBitmap::kRGB_565_Config, "0101010" },
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{ SkBitmap::kARGB_4444_Config, "0101110" },
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{ SkBitmap::kARGB_8888_Config, "0101110" },
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};
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static const int W = 20;
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static const int H = 33;
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static void setup_src_bitmaps(SkBitmap* srcOpaque, SkBitmap* srcPremul,
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SkBitmap::Config config) {
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SkColorTable* ctOpaque = NULL;
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SkColorTable* ctPremul = NULL;
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srcOpaque->setConfig(config, W, H, 0, kOpaque_SkAlphaType);
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srcPremul->setConfig(config, W, H, 0, kPremul_SkAlphaType);
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if (SkBitmap::kIndex8_Config == config) {
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ctOpaque = init_ctable(kOpaque_SkAlphaType);
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ctPremul = init_ctable(kPremul_SkAlphaType);
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}
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srcOpaque->allocPixels(ctOpaque);
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srcPremul->allocPixels(ctPremul);
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SkSafeUnref(ctOpaque);
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SkSafeUnref(ctPremul);
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init_src(*srcOpaque);
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init_src(*srcPremul);
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}
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DEF_TEST(BitmapCopy_extractSubset, reporter) {
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for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
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SkBitmap srcOpaque, srcPremul;
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setup_src_bitmaps(&srcOpaque, &srcPremul, gPairs[i].fConfig);
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SkBitmap bitmap(srcOpaque);
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SkBitmap subset;
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SkIRect r;
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// Extract a subset which has the same width as the original. This
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// catches a bug where we cloned the genID incorrectly.
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r.set(0, 1, W, 3);
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bitmap.setIsVolatile(true);
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if (bitmap.extractSubset(&subset, r)) {
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REPORTER_ASSERT(reporter, subset.width() == W);
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REPORTER_ASSERT(reporter, subset.height() == 2);
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REPORTER_ASSERT(reporter, subset.alphaType() == bitmap.alphaType());
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REPORTER_ASSERT(reporter, subset.isVolatile() == true);
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// Test copying an extracted subset.
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for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) {
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SkBitmap copy;
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bool success = subset.copyTo(©, gPairs[j].fConfig);
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if (!success) {
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// Skip checking that success matches fValid, which is redundant
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// with the code below.
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REPORTER_ASSERT(reporter, gPairs[i].fConfig != gPairs[j].fConfig);
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continue;
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}
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// When performing a copy of an extracted subset, the gen id should
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// change.
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REPORTER_ASSERT(reporter, copy.getGenerationID() != subset.getGenerationID());
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REPORTER_ASSERT(reporter, copy.width() == W);
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REPORTER_ASSERT(reporter, copy.height() == 2);
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if (gPairs[i].fConfig == gPairs[j].fConfig) {
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SkAutoLockPixels alp0(subset);
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SkAutoLockPixels alp1(copy);
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// they should both have, or both not-have, a colortable
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bool hasCT = subset.getColorTable() != NULL;
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REPORTER_ASSERT(reporter, (copy.getColorTable() != NULL) == hasCT);
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}
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}
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}
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bitmap = srcPremul;
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bitmap.setIsVolatile(false);
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if (bitmap.extractSubset(&subset, r)) {
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REPORTER_ASSERT(reporter, subset.alphaType() == bitmap.alphaType());
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REPORTER_ASSERT(reporter, subset.isVolatile() == false);
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}
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}
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}
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DEF_TEST(BitmapCopy, reporter) {
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static const bool isExtracted[] = {
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false, true
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};
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for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
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SkBitmap srcOpaque, srcPremul;
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setup_src_bitmaps(&srcOpaque, &srcPremul, gPairs[i].fConfig);
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for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) {
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SkBitmap dst;
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bool success = srcPremul.copyTo(&dst, gPairs[j].fConfig);
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bool expected = gPairs[i].fValid[j] != '0';
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if (success != expected) {
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ERRORF(reporter, "SkBitmap::copyTo from %s to %s. expected %s "
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"returned %s", gConfigName[i], gConfigName[j],
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boolStr(expected), boolStr(success));
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}
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bool canSucceed = srcPremul.canCopyTo(gPairs[j].fConfig);
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if (success != canSucceed) {
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ERRORF(reporter, "SkBitmap::copyTo from %s to %s. returned %s "
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"canCopyTo %s", gConfigName[i], gConfigName[j],
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boolStr(success), boolStr(canSucceed));
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}
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if (success) {
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REPORTER_ASSERT(reporter, srcPremul.width() == dst.width());
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REPORTER_ASSERT(reporter, srcPremul.height() == dst.height());
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REPORTER_ASSERT(reporter, dst.config() == gPairs[j].fConfig);
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test_isOpaque(reporter, srcOpaque, srcPremul, dst.config());
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if (srcPremul.config() == dst.config()) {
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SkAutoLockPixels srcLock(srcPremul);
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SkAutoLockPixels dstLock(dst);
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REPORTER_ASSERT(reporter, srcPremul.readyToDraw());
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REPORTER_ASSERT(reporter, dst.readyToDraw());
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const char* srcP = (const char*)srcPremul.getAddr(0, 0);
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const char* dstP = (const char*)dst.getAddr(0, 0);
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REPORTER_ASSERT(reporter, srcP != dstP);
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REPORTER_ASSERT(reporter, !memcmp(srcP, dstP,
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srcPremul.getSize()));
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REPORTER_ASSERT(reporter, srcPremul.getGenerationID() == dst.getGenerationID());
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} else {
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REPORTER_ASSERT(reporter, srcPremul.getGenerationID() != dst.getGenerationID());
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}
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} else {
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// dst should be unchanged from its initial state
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REPORTER_ASSERT(reporter, dst.config() == SkBitmap::kNo_Config);
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REPORTER_ASSERT(reporter, dst.width() == 0);
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REPORTER_ASSERT(reporter, dst.height() == 0);
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}
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} // for (size_t j = ...
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// Tests for getSafeSize(), getSafeSize64(), copyPixelsTo(),
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// copyPixelsFrom().
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//
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for (size_t copyCase = 0; copyCase < SK_ARRAY_COUNT(isExtracted);
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++copyCase) {
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// Test copying to/from external buffer.
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// Note: the tests below have hard-coded values ---
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// Please take care if modifying.
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// Tests for getSafeSize64().
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// Test with a very large configuration without pixel buffer
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// attached.
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SkBitmap tstSafeSize;
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tstSafeSize.setConfig(gPairs[i].fConfig, 100000000U,
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100000000U);
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int64_t safeSize = tstSafeSize.computeSafeSize64();
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if (safeSize < 0) {
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ERRORF(reporter, "getSafeSize64() negative: %s",
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getSkConfigName(tstSafeSize));
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}
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bool sizeFail = false;
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// Compare against hand-computed values.
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switch (gPairs[i].fConfig) {
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case SkBitmap::kNo_Config:
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break;
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case SkBitmap::kA8_Config:
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case SkBitmap::kIndex8_Config:
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if (safeSize != 0x2386F26FC10000LL) {
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sizeFail = true;
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}
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break;
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case SkBitmap::kRGB_565_Config:
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case SkBitmap::kARGB_4444_Config:
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if (safeSize != 0x470DE4DF820000LL) {
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sizeFail = true;
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}
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break;
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case SkBitmap::kARGB_8888_Config:
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if (safeSize != 0x8E1BC9BF040000LL) {
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sizeFail = true;
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}
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break;
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default:
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break;
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}
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if (sizeFail) {
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ERRORF(reporter, "computeSafeSize64() wrong size: %s",
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getSkConfigName(tstSafeSize));
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}
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int subW = 2;
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int subH = 2;
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// Create bitmap to act as source for copies and subsets.
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SkBitmap src, subset;
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SkColorTable* ct = NULL;
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if (isExtracted[copyCase]) { // A larger image to extract from.
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src.setConfig(gPairs[i].fConfig, 2 * subW + 1, subH);
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} else { // Tests expect a 2x2 bitmap, so make smaller.
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src.setConfig(gPairs[i].fConfig, subW, subH);
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}
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if (SkBitmap::kIndex8_Config == src.config()) {
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ct = init_ctable(kPremul_SkAlphaType);
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}
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src.allocPixels(ct);
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SkSafeUnref(ct);
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// Either copy src or extract into 'subset', which is used
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// for subsequent calls to copyPixelsTo/From.
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bool srcReady = false;
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if (isExtracted[copyCase]) {
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// The extractedSubset() test case allows us to test copy-
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// ing when src and dst mave possibly different strides.
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SkIRect r;
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r.set(1, 0, 1 + subW, subH); // 2x2 extracted bitmap
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srcReady = src.extractSubset(&subset, r);
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} else {
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srcReady = src.copyTo(&subset, src.config());
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}
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// Not all configurations will generate a valid 'subset'.
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if (srcReady) {
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// Allocate our target buffer 'buf' for all copies.
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// To simplify verifying correctness of copies attach
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// buf to a SkBitmap, but copies are done using the
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// raw buffer pointer.
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const size_t bufSize = subH *
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SkBitmap::ComputeRowBytes(src.config(), subW) * 2;
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SkAutoMalloc autoBuf (bufSize);
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uint8_t* buf = static_cast<uint8_t*>(autoBuf.get());
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SkBitmap bufBm; // Attach buf to this bitmap.
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bool successExpected;
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// Set up values for each pixel being copied.
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Coordinates coords(subW * subH);
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for (int x = 0; x < subW; ++x)
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for (int y = 0; y < subH; ++y)
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{
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int index = y * subW + x;
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SkASSERT(index < coords.length);
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coords[index]->fX = x;
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coords[index]->fY = y;
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}
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writeCoordPixels(subset, coords);
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// Test #1 ////////////////////////////////////////////
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// Before/after comparisons easier if we attach buf
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// to an appropriately configured SkBitmap.
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memset(buf, 0xFF, bufSize);
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// Config with stride greater than src but that fits in buf.
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bufBm.setConfig(gPairs[i].fConfig, subW, subH,
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SkBitmap::ComputeRowBytes(subset.config(), subW) * 2);
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bufBm.setPixels(buf);
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successExpected = false;
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// Then attempt to copy with a stride that is too large
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// to fit in the buffer.
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REPORTER_ASSERT(reporter,
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subset.copyPixelsTo(buf, bufSize, bufBm.rowBytes() * 3)
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== successExpected);
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if (successExpected)
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reportCopyVerification(subset, bufBm, coords,
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"copyPixelsTo(buf, bufSize, 1.5*maxRowBytes)",
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reporter);
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// Test #2 ////////////////////////////////////////////
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// This test should always succeed, but in the case
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// 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 ...
|
|
}
|
|
}
|