1 /* 2 * Copyright 2012 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 /** Tests for ARGBImageEncoder. */ 9 10 #include "Test.h" 11 #include "SkBitmap.h" 12 #include "SkCanvas.h" 13 #include "SkImageEncoder.h" 14 #include "SkStream.h" 15 16 namespace skiatest { 17 18 class BitmapTransformerTestClass : public Test { 19 public: 20 static Test* Factory(void*) { return SkNEW(BitmapTransformerTestClass); } 21 protected: 22 virtual void onGetName(SkString* name) SK_OVERRIDE { name->set("ARGBImageEncoder"); } 23 virtual void onRun(Reporter* reporter) SK_OVERRIDE; 24 }; 25 26 static SkBitmap::Config configs[] = { 27 SkBitmap::kRGB_565_Config, 28 SkBitmap::kARGB_8888_Config, 29 }; 30 31 void BitmapTransformerTestClass::onRun(Reporter* reporter) { 32 // Bytes we expect to get: 33 const int kWidth = 3; 34 const int kHeight = 5; 35 const unsigned char comparisonBuffer[] = { 36 // kHeight rows, each with kWidth pixels, premultiplied ARGB for each pixel 37 0xff,0xff,0x00,0x00, 0xff,0xff,0x00,0x00, 0xff,0xff,0x00,0x00, // red 38 0xff,0x00,0xff,0x00, 0xff,0x00,0xff,0x00, 0xff,0x00,0xff,0x00, // green 39 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue 40 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue 41 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue 42 }; 43 44 SkAutoTDelete<SkImageEncoder> enc(CreateARGBImageEncoder()); 45 for (size_t configIndex = 0; configIndex < SK_ARRAY_COUNT(configs); ++configIndex) { 46 // A bitmap that should generate the above bytes: 47 SkBitmap bitmap; 48 { 49 bitmap.setConfig(configs[configIndex], kWidth, kHeight); 50 REPORTER_ASSERT(reporter, bitmap.allocPixels()); 51 bitmap.setIsOpaque(true); 52 bitmap.eraseColor(SK_ColorBLUE); 53 // Change rows [0,1] from blue to [red,green]. 54 SkCanvas canvas(bitmap); 55 SkPaint paint; 56 paint.setColor(SK_ColorRED); 57 canvas.drawIRect(SkIRect::MakeLTRB(0, 0, kWidth, 1), paint); 58 paint.setColor(SK_ColorGREEN); 59 canvas.drawIRect(SkIRect::MakeLTRB(0, 1, kWidth, 2), paint); 60 } 61 62 // Transform the bitmap. 63 int bufferSize = bitmap.width() * bitmap.height() * 4; 64 SkAutoMalloc pixelBufferManager(bufferSize); 65 char *pixelBuffer = static_cast<char *>(pixelBufferManager.get()); 66 SkMemoryWStream out(pixelBuffer, bufferSize); 67 REPORTER_ASSERT(reporter, enc->encodeStream(&out, bitmap, SkImageEncoder::kDefaultQuality)); 68 69 // Confirm we got the expected results. 70 REPORTER_ASSERT(reporter, bufferSize == sizeof(comparisonBuffer)); 71 REPORTER_ASSERT(reporter, memcmp(pixelBuffer, comparisonBuffer, bufferSize) == 0); 72 } 73 } 74 75 static TestRegistry gReg(BitmapTransformerTestClass::Factory); 76 77 } 78
