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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkYUVPlanesCache_DEFINED
#define SkYUVPlanesCache_DEFINED
#include "SkCachedData.h"
#include "SkImageInfo.h"
class SkResourceCache;
class SkYUVPlanesCache {
public:
/**
* The Info struct contains data about the 3 Y, U and V planes of memory stored
* contiguously, in that order, as a single block of memory within SkYUVPlanesCache.
*
* fSize: Width and height of each of the 3 planes (in pixels).
* fSizeInMemory: Amount of memory allocated for each plane (may be different from
"height * rowBytes", depending on the jpeg decoder's block size).
* The sum of these is the total size stored within SkYUVPlanesCache.
* fRowBytes: rowBytes for each of the 3 planes (in bytes).
* fColorSpace: color space that will be used for the YUV -> RGB conversion.
*/
struct Info {
SkISize fSize[3];
size_t fSizeInMemory[3];
size_t fRowBytes[3];
SkYUVColorSpace fColorSpace;
};
/**
* On success, return a ref to the SkCachedData that holds the pixels.
*
* On failure, return NULL.
*/
static SkCachedData* FindAndRef(uint32_t genID, Info* info,
SkResourceCache* localCache = NULL);
/**
* Add a pixelRef ID and its YUV planes data to the cache.
*/
static void Add(uint32_t genID, SkCachedData* data, Info* info,
SkResourceCache* localCache = NULL);
};
#endif
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