1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/core/SkValidatingReadBuffer.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,83 @@
1.4 +/*
1.5 + * Copyright 2013 Google Inc.
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 +#ifndef SkValidatingReadBuffer_DEFINED
1.12 +#define SkValidatingReadBuffer_DEFINED
1.13 +
1.14 +#include "SkRefCnt.h"
1.15 +#include "SkBitmapHeap.h"
1.16 +#include "SkReadBuffer.h"
1.17 +#include "SkWriteBuffer.h"
1.18 +#include "SkPath.h"
1.19 +#include "SkPicture.h"
1.20 +#include "SkReader32.h"
1.21 +
1.22 +class SkBitmap;
1.23 +
1.24 +class SkValidatingReadBuffer : public SkReadBuffer {
1.25 +public:
1.26 + SkValidatingReadBuffer(const void* data, size_t size);
1.27 + virtual ~SkValidatingReadBuffer();
1.28 +
1.29 + const void* skip(size_t size);
1.30 +
1.31 + // primitives
1.32 + virtual bool readBool() SK_OVERRIDE;
1.33 + virtual SkColor readColor() SK_OVERRIDE;
1.34 + virtual SkFixed readFixed() SK_OVERRIDE;
1.35 + virtual int32_t readInt() SK_OVERRIDE;
1.36 + virtual SkScalar readScalar() SK_OVERRIDE;
1.37 + virtual uint32_t readUInt() SK_OVERRIDE;
1.38 + virtual int32_t read32() SK_OVERRIDE;
1.39 +
1.40 + // strings -- the caller is responsible for freeing the string contents
1.41 + virtual void readString(SkString* string) SK_OVERRIDE;
1.42 + virtual void* readEncodedString(size_t* length, SkPaint::TextEncoding encoding) SK_OVERRIDE;
1.43 +
1.44 + // common data structures
1.45 + virtual SkFlattenable* readFlattenable(SkFlattenable::Type type) SK_OVERRIDE;
1.46 + virtual void readPoint(SkPoint* point) SK_OVERRIDE;
1.47 + virtual void readMatrix(SkMatrix* matrix) SK_OVERRIDE;
1.48 + virtual void readIRect(SkIRect* rect) SK_OVERRIDE;
1.49 + virtual void readRect(SkRect* rect) SK_OVERRIDE;
1.50 + virtual void readRegion(SkRegion* region) SK_OVERRIDE;
1.51 + virtual void readPath(SkPath* path) SK_OVERRIDE;
1.52 +
1.53 + // binary data and arrays
1.54 + virtual bool readByteArray(void* value, size_t size) SK_OVERRIDE;
1.55 + virtual bool readColorArray(SkColor* colors, size_t size) SK_OVERRIDE;
1.56 + virtual bool readIntArray(int32_t* values, size_t size) SK_OVERRIDE;
1.57 + virtual bool readPointArray(SkPoint* points, size_t size) SK_OVERRIDE;
1.58 + virtual bool readScalarArray(SkScalar* values, size_t size) SK_OVERRIDE;
1.59 +
1.60 + // helpers to get info about arrays and binary data
1.61 + virtual uint32_t getArrayCount() SK_OVERRIDE;
1.62 +
1.63 + virtual void readBitmap(SkBitmap* bitmap) SK_OVERRIDE;
1.64 + // TODO: Implement this (securely) when needed
1.65 + virtual SkTypeface* readTypeface() SK_OVERRIDE;
1.66 +
1.67 + virtual bool validate(bool isValid) SK_OVERRIDE;
1.68 + virtual bool isValid() const SK_OVERRIDE;
1.69 +
1.70 + virtual bool validateAvailable(size_t size) SK_OVERRIDE;
1.71 +
1.72 +private:
1.73 + bool readArray(void* value, size_t size, size_t elementSize);
1.74 +
1.75 + void setMemory(const void* data, size_t size);
1.76 +
1.77 + static bool IsPtrAlign4(const void* ptr) {
1.78 + return SkIsAlign4((uintptr_t)ptr);
1.79 + }
1.80 +
1.81 + bool fError;
1.82 +
1.83 + typedef SkReadBuffer INHERITED;
1.84 +};
1.85 +
1.86 +#endif // SkValidatingReadBuffer_DEFINED
