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| 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 #include "SkImageEncoder.h" | |
| 9 | |
| 10 #include "SkBitmap.h" | |
| 11 #include "SkCanvas.h" | |
| 12 #include "SkStream.h" | |
| 13 #include "SkTemplates.h" | |
| 14 #include "Test.h" | |
| 15 | |
| 16 static SkColorType gColorTypes[] = { | |
| 17 kRGB_565_SkColorType, | |
| 18 kN32_SkColorType, | |
| 19 }; | |
| 20 | |
| 21 DEF_TEST(ARGBImageEncoder, reporter) { | |
| 22 // Bytes we expect to get: | |
| 23 const int kWidth = 3; | |
| 24 const int kHeight = 5; | |
| 25 const unsigned char comparisonBuffer[] = { | |
| 26 // kHeight rows, each with kWidth pixels, premultiplied ARGB for each pi
xel | |
| 27 0xff,0xff,0x00,0x00, 0xff,0xff,0x00,0x00, 0xff,0xff,0x00,0x00, // red | |
| 28 0xff,0x00,0xff,0x00, 0xff,0x00,0xff,0x00, 0xff,0x00,0xff,0x00, // green | |
| 29 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue | |
| 30 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue | |
| 31 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, // blue | |
| 32 }; | |
| 33 | |
| 34 SkAutoTDelete<SkImageEncoder> enc(CreateARGBImageEncoder()); | |
| 35 for (size_t ctIndex = 0; ctIndex < SK_ARRAY_COUNT(gColorTypes); ++ctIndex) { | |
| 36 // A bitmap that should generate the above bytes: | |
| 37 SkBitmap bitmap; | |
| 38 { | |
| 39 bitmap.allocPixels(SkImageInfo::Make(kWidth, kHeight, gColorTypes[ct
Index], | |
| 40 kOpaque_SkAlphaType)); | |
| 41 bitmap.eraseColor(SK_ColorBLUE); | |
| 42 // Change rows [0,1] from blue to [red,green]. | |
| 43 SkCanvas canvas(bitmap); | |
| 44 SkPaint paint; | |
| 45 paint.setColor(SK_ColorRED); | |
| 46 canvas.drawIRect(SkIRect::MakeLTRB(0, 0, kWidth, 1), paint); | |
| 47 paint.setColor(SK_ColorGREEN); | |
| 48 canvas.drawIRect(SkIRect::MakeLTRB(0, 1, kWidth, 2), paint); | |
| 49 } | |
| 50 | |
| 51 // Transform the bitmap. | |
| 52 int bufferSize = bitmap.width() * bitmap.height() * 4; | |
| 53 SkAutoTMalloc<char> pixelBufferManager(bufferSize); | |
| 54 char* pixelBuffer = pixelBufferManager.get(); | |
| 55 SkMemoryWStream out(pixelBuffer, bufferSize); | |
| 56 REPORTER_ASSERT(reporter, enc->encodeStream(&out, bitmap, SkImageEncoder
::kDefaultQuality)); | |
| 57 | |
| 58 // Confirm we got the expected results. | |
| 59 REPORTER_ASSERT(reporter, bufferSize == sizeof(comparisonBuffer)); | |
| 60 REPORTER_ASSERT(reporter, memcmp(pixelBuffer, comparisonBuffer, bufferSi
ze) == 0); | |
| 61 } | |
| 62 } | |
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