1/* 2 * Copyright 2013 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 "SkBitmap.h" 9 10#include "Test.h" 11 12static void test_allocpixels(skiatest::Reporter* reporter) { 13 const int width = 10; 14 const int height = 10; 15 const SkImageInfo info = SkImageInfo::MakeN32Premul(width, height); 16 const size_t explicitRowBytes = info.minRowBytes() + 24; 17 18 SkBitmap bm; 19 bm.setInfo(info); 20 REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes()); 21 bm.allocPixels(); 22 REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes()); 23 bm.reset(); 24 bm.allocPixels(info); 25 REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes()); 26 27 bm.setInfo(info, explicitRowBytes); 28 REPORTER_ASSERT(reporter, explicitRowBytes == bm.rowBytes()); 29 bm.allocPixels(); 30 REPORTER_ASSERT(reporter, explicitRowBytes == bm.rowBytes()); 31 bm.reset(); 32 bm.allocPixels(info, explicitRowBytes); 33 REPORTER_ASSERT(reporter, explicitRowBytes == bm.rowBytes()); 34 35 bm.reset(); 36 bm.setInfo(info, 0); 37 REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes()); 38 bm.reset(); 39 bm.allocPixels(info, 0); 40 REPORTER_ASSERT(reporter, info.minRowBytes() == bm.rowBytes()); 41 42 bm.reset(); 43 bool success = bm.setInfo(info, info.minRowBytes() - 1); // invalid for 32bit 44 REPORTER_ASSERT(reporter, !success); 45 REPORTER_ASSERT(reporter, bm.isNull()); 46} 47 48static void test_bigwidth(skiatest::Reporter* reporter) { 49 SkBitmap bm; 50 int width = 1 << 29; // *4 will be the high-bit of 32bit int 51 52 SkImageInfo info = SkImageInfo::MakeA8(width, 1); 53 REPORTER_ASSERT(reporter, bm.setInfo(info)); 54 REPORTER_ASSERT(reporter, bm.setInfo(info.makeColorType(kRGB_565_SkColorType))); 55 56 // for a 4-byte config, this width will compute a rowbytes of 0x80000000, 57 // which does not fit in a int32_t. setConfig should detect this, and fail. 58 59 // TODO: perhaps skia can relax this, and only require that rowBytes fit 60 // in a uint32_t (or larger), but for now this is the constraint. 61 62 REPORTER_ASSERT(reporter, !bm.setInfo(info.makeColorType(kN32_SkColorType))); 63} 64 65/** 66 * This test contains basic sanity checks concerning bitmaps. 67 */ 68DEF_TEST(Bitmap, reporter) { 69 // Zero-sized bitmaps are allowed 70 for (int width = 0; width < 2; ++width) { 71 for (int height = 0; height < 2; ++height) { 72 SkBitmap bm; 73 bool setConf = bm.setInfo(SkImageInfo::MakeN32Premul(width, height)); 74 REPORTER_ASSERT(reporter, setConf); 75 if (setConf) { 76 bm.allocPixels(); 77 } 78 REPORTER_ASSERT(reporter, SkToBool(width & height) != bm.empty()); 79 } 80 } 81 82 test_bigwidth(reporter); 83 test_allocpixels(reporter); 84} 85