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 #ifndef SkYUVPlanesCache_DEFINED 9 #define SkYUVPlanesCache_DEFINED 10 11 #include "SkCachedData.h" 12 #include "SkImageInfo.h" 13 #include "SkYUVAIndex.h" 14 #include "SkYUVASizeInfo.h" 15 16 class SkResourceCache; 17 18 class SkYUVPlanesCache { 19 public: 20 /** 21 * The Info struct contains data about the 4 Y, U, V, and A planes of memory stored 22 * contiguously, in that order, as a single block of memory within SkYUVPlanesCache. 23 * 24 * fSizeInfo: fWidth, fHeight, and fWidthBytes of each of the Y, U, V, and A planes. 25 * fColorSpace: color space that will be used for the YUV -> RGB conversion. 26 */ 27 struct Info { 28 SkYUVASizeInfo fSizeInfo; 29 SkYUVAIndex fYUVAIndices[SkYUVAIndex::kIndexCount]; 30 SkYUVColorSpace fColorSpace; 31 }; 32 /** 33 * On success, return a ref to the SkCachedData that holds the pixels. 34 * 35 * On failure, return nullptr. 36 */ 37 static SkCachedData* FindAndRef(uint32_t genID, Info* info, 38 SkResourceCache* localCache = nullptr); 39 40 /** 41 * Add a pixelRef ID and its YUV planes data to the cache. 42 */ 43 static void Add(uint32_t genID, SkCachedData* data, Info* info, 44 SkResourceCache* localCache = nullptr); 45 }; 46 47 #endif 48