1 /* 2 * Copyright 2015 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 "SkCodec.h" 9 #include "SkData.h" 10 #include "SkImageGenerator.h" 11 12 class SkCodecImageGenerator : public SkImageGenerator { 13 public: 14 /* 15 * If this data represents an encoded image that we know how to decode, 16 * return an SkCodecImageGenerator. Otherwise return nullptr. 17 * 18 * Refs the data if an image generator can be returned. Otherwise does 19 * not affect the data. 20 */ 21 static SkImageGenerator* NewFromEncodedCodec(SkData* data); 22 23 protected: 24 SkData* onRefEncodedData(SK_REFENCODEDDATA_CTXPARAM) override; 25 26 bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, SkPMColor ctable[], 27 int* ctableCount) override; 28 29 bool onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3], 30 SkYUVColorSpace* colorSpace) override; 31 32 private: 33 /* 34 * Takes ownership of codec 35 * Refs the data 36 */ 37 SkCodecImageGenerator(SkCodec* codec, SkData* data); 38 39 SkAutoTDelete<SkCodec> fCodec; 40 SkAutoTUnref<SkData> fData; 41 42 // FIXME: These fields are necessary only until we change the API of SkImageGenerator 43 // to match SkCodec. Once the API is changed, they should be removed. 44 int fYWidth; 45 int fUWidth; 46 int fVWidth; 47 48 typedef SkImageGenerator INHERITED; 49 }; 50
