cmykjpeg.cpp revision 1313086ef4d901176e569d1f4b6362250ac02cd7
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 "gm.h" 9#include "SkCanvas.h" 10#include "SkImageDecoder.h" 11#include "SkStream.h" 12 13namespace skiagm { 14 15/** Draw a CMYK encoded jpeg - libjpeg doesn't support CMYK->RGB 16 conversion so this tests Skia's internal processing 17*/ 18class CMYKJpegGM : public GM { 19public: 20 CMYKJpegGM() { 21 22 // parameters to the "decode" call 23 bool dither = false; 24 SkBitmap::Config prefConfig = SkBitmap::kARGB_8888_Config; 25 26 SkString filename(INHERITED::gResourcePath); 27 if (!filename.endsWith("/") && !filename.endsWith("\\")) { 28 filename.append("/"); 29 } 30 31 filename.append("CMYK.jpg"); 32 33 SkFILEStream stream(filename.c_str()); 34 SkImageDecoder* codec = SkImageDecoder::Factory(&stream); 35 if (codec) { 36 stream.rewind(); 37 codec->setDitherImage(dither); 38 codec->decode(&stream, &fBitmap, prefConfig, 39 SkImageDecoder::kDecodePixels_Mode); 40 } 41 } 42 43protected: 44 virtual SkString onShortName() { 45 return SkString("cmykjpeg"); 46 } 47 48 virtual SkISize onISize() { 49 return make_isize(640, 480); 50 } 51 52 virtual void onDraw(SkCanvas* canvas) { 53 54 canvas->translate(20*SK_Scalar1, 20*SK_Scalar1); 55 canvas->drawBitmap(fBitmap, 0, 0); 56 } 57 58private: 59 SkBitmap fBitmap; 60 61 typedef GM INHERITED; 62}; 63 64void forceLinking(); 65 66void forceLinking() { 67 SkImageDecoder *creator = CreateJPEGImageDecoder(); 68 SkASSERT(creator); 69} 70 71////////////////////////////////////////////////////////////////////////////// 72 73static GM* MyFactory(void*) { return new CMYKJpegGM; } 74static GMRegistry reg(MyFactory); 75 76} 77