1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/include/core/SkMallocPixelRef.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,116 @@
1.4 +/*
1.5 + * Copyright 2008 The Android Open Source Project
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +
1.12 +#ifndef SkMallocPixelRef_DEFINED
1.13 +#define SkMallocPixelRef_DEFINED
1.14 +
1.15 +#include "SkPixelRef.h"
1.16 +
1.17 +/** We explicitly use the same allocator for our pixels that SkMask does,
1.18 + so that we can freely assign memory allocated by one class to the other.
1.19 +*/
1.20 +class SK_API SkMallocPixelRef : public SkPixelRef {
1.21 +public:
1.22 + SK_DECLARE_INST_COUNT(SkMallocPixelRef)
1.23 + /**
1.24 + * Return a new SkMallocPixelRef with the provided pixel storage, rowBytes,
1.25 + * and optional colortable. The caller is responsible for managing the
1.26 + * lifetime of the pixel storage buffer, as this pixelref will not try
1.27 + * to delete it.
1.28 + *
1.29 + * The pixelref will ref() the colortable (if not NULL).
1.30 + *
1.31 + * Returns NULL on failure.
1.32 + */
1.33 + static SkMallocPixelRef* NewDirect(const SkImageInfo&, void* addr,
1.34 + size_t rowBytes, SkColorTable*);
1.35 +
1.36 + /**
1.37 + * Return a new SkMallocPixelRef, automatically allocating storage for the
1.38 + * pixels. If rowBytes are 0, an optimal value will be chosen automatically.
1.39 + * If rowBytes is > 0, then it will be respected, or NULL will be returned
1.40 + * if rowBytes is invalid for the specified info.
1.41 + *
1.42 + * This pixelref will ref() the specified colortable (if not NULL).
1.43 + *
1.44 + * Returns NULL on failure.
1.45 + */
1.46 + static SkMallocPixelRef* NewAllocate(const SkImageInfo& info,
1.47 + size_t rowBytes, SkColorTable*);
1.48 +
1.49 + /**
1.50 + * Return a new SkMallocPixelRef with the provided pixel storage,
1.51 + * rowBytes, and optional colortable. On destruction, ReleaseProc
1.52 + * will be called.
1.53 + *
1.54 + * This pixelref will ref() the specified colortable (if not NULL).
1.55 + *
1.56 + * Returns NULL on failure.
1.57 + */
1.58 + typedef void (*ReleaseProc)(void* addr, void* context);
1.59 + static SkMallocPixelRef* NewWithProc(const SkImageInfo& info,
1.60 + size_t rowBytes, SkColorTable*,
1.61 + void* addr, ReleaseProc proc,
1.62 + void* context);
1.63 +
1.64 + /**
1.65 + * Return a new SkMallocPixelRef that will use the provided
1.66 + * SkData, rowBytes, and optional colortable as pixel storage.
1.67 + * The SkData will be ref()ed and on destruction of the PielRef,
1.68 + * the SkData will be unref()ed.
1.69 + *
1.70 + * @param offset (in bytes) into the provided SkData that the
1.71 + * first pixel is located at.
1.72 + *
1.73 + * This pixelref will ref() the specified colortable (if not NULL).
1.74 + *
1.75 + * Returns NULL on failure.
1.76 + */
1.77 + static SkMallocPixelRef* NewWithData(const SkImageInfo& info,
1.78 + size_t rowBytes,
1.79 + SkColorTable* ctable,
1.80 + SkData* data,
1.81 + size_t offset = 0);
1.82 +
1.83 + void* getAddr() const { return fStorage; }
1.84 +
1.85 + class PRFactory : public SkPixelRefFactory {
1.86 + public:
1.87 + virtual SkPixelRef* create(const SkImageInfo&,
1.88 + SkColorTable*) SK_OVERRIDE;
1.89 + };
1.90 +
1.91 + SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMallocPixelRef)
1.92 +
1.93 +protected:
1.94 + // The ownPixels version of this constructor is deprecated.
1.95 + SkMallocPixelRef(const SkImageInfo&, void* addr, size_t rb, SkColorTable*,
1.96 + bool ownPixels);
1.97 + SkMallocPixelRef(SkReadBuffer& buffer);
1.98 + virtual ~SkMallocPixelRef();
1.99 +
1.100 + virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
1.101 + virtual void onUnlockPixels() SK_OVERRIDE;
1.102 + virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
1.103 + virtual size_t getAllocatedSizeInBytes() const SK_OVERRIDE;
1.104 +
1.105 +private:
1.106 + void* fStorage;
1.107 + SkColorTable* fCTable;
1.108 + size_t fRB;
1.109 + ReleaseProc fReleaseProc;
1.110 + void* fReleaseProcContext;
1.111 +
1.112 + SkMallocPixelRef(const SkImageInfo&, void* addr, size_t rb, SkColorTable*,
1.113 + ReleaseProc proc, void* context);
1.114 +
1.115 + typedef SkPixelRef INHERITED;
1.116 +};
1.117 +
1.118 +
1.119 +#endif
