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/*
** Copyright (c) 2018 Valve Corporation
** Copyright (c) 2018 LunarG, Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and associated documentation files (the "Software"),
** to deal in the Software without restriction, including without limitation
** the rights to use, copy, modify, merge, publish, distribute, sublicense,
** and/or sell copies of the Software, and to permit persons to whom the
** Software is furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in
** all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
** FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
** DEALINGS IN THE SOFTWARE.
*/
#ifndef GFXRECON_DECODE_POINTER_DECODER_BASE_H
#define GFXRECON_DECODE_POINTER_DECODER_BASE_H
#include "decode/value_decoder.h"
#include "format/format.h"
#include "util/defines.h"
GFXRECON_BEGIN_NAMESPACE(gfxrecon)
GFXRECON_BEGIN_NAMESPACE(decode)
class PointerDecoderBase
{
public:
PointerDecoderBase() : len_(0), address_(0), attrib_(format::PointerAttributes::kIsNull) {}
virtual ~PointerDecoderBase() {}
bool IsNull() const
{
return ((attrib_ & format::PointerAttributes::kIsNull) == format::PointerAttributes::kIsNull) ? true : false;
}
bool HasAddress() const
{
return ((attrib_ & format::PointerAttributes::kHasAddress) == format::PointerAttributes::kHasAddress) ? true
: false;
}
bool HasData() const
{
return ((attrib_ & format::PointerAttributes::kHasData) == format::PointerAttributes::kHasData) ? true : false;
}
uint32_t GetAttributeMask() const { return attrib_; }
uint64_t GetAddress() const { return address_; }
size_t GetLength() const { return len_; }
protected:
size_t DecodeAttributes(const uint8_t* buffer, size_t buffer_size)
{
size_t bytes_read = 0;
bytes_read += ValueDecoder::DecodeUInt32Value((buffer + bytes_read), (buffer_size - bytes_read), &attrib_);
if ((attrib_ & format::PointerAttributes::kIsNull) != format::PointerAttributes::kIsNull)
{
if ((attrib_ & format::PointerAttributes::kHasAddress) == format::PointerAttributes::kHasAddress)
{
bytes_read += ValueDecoder::DecodeAddress((buffer + bytes_read), (buffer_size - bytes_read), &address_);
}
if (((attrib_ & format::PointerAttributes::kIsArray) == format::PointerAttributes::kIsArray) ||
((attrib_ & format::PointerAttributes::kIsArray2D) == format::PointerAttributes::kIsArray2D) ||
((attrib_ & format::PointerAttributes::kIsString) == format::PointerAttributes::kIsString) ||
((attrib_ & format::PointerAttributes::kIsWString) == format::PointerAttributes::kIsWString))
{
bytes_read += ValueDecoder::DecodeSizeTValue((buffer + bytes_read), (buffer_size - bytes_read), &len_);
}
else
{
len_ = 1;
}
}
return bytes_read;
}
private:
size_t len_;
uint64_t address_;
uint32_t attrib_;
};
GFXRECON_END_NAMESPACE(decode)
GFXRECON_END_NAMESPACE(gfxrecon)
#endif // GFXRECON_DECODE_POINTER_DECODER_BASE_H
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