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/*
** Copyright (c) 2019-2020 Valve Corporation
** Copyright (c) 2019-2020 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_HANDLE_POINTER_DECODER_H
#define GFXRECON_DECODE_HANDLE_POINTER_DECODER_H
#include "decode/decode_allocator.h"
#include "decode/pointer_decoder.h"
#include <cassert>
#include <memory>
GFXRECON_BEGIN_NAMESPACE(gfxrecon)
GFXRECON_BEGIN_NAMESPACE(decode)
template <typename T>
class HandlePointerDecoder
{
public:
HandlePointerDecoder() : handle_data_(nullptr), handle_data_len_(0), capacity_(0), is_memory_external_(false) {}
~HandlePointerDecoder() {}
bool IsNull() const { return decoder_.IsNull(); }
bool HasAddress() const { return decoder_.HasAddress(); }
bool HasData() const { return decoder_.HasData(); }
uint32_t GetAttributeMask() const { return decoder_.GetAttributeMask(); }
uint64_t GetAddress() const { return decoder_.GetAddress(); }
size_t GetLength() const { return decoder_.GetLength(); }
const format::HandleId* GetPointer() const { return decoder_.GetPointer(); }
void SetExternalMemory(T* data, size_t capacity)
{
assert(handle_data_ == nullptr);
if ((data != nullptr) && (capacity > 0))
{
handle_data_ = data;
capacity_ = capacity;
is_memory_external_ = true;
}
else
{
GFXRECON_LOG_WARNING("Handle pointer decoder's external memory was initialized with a NULL pointer");
}
}
void SetHandleLength(size_t len)
{
handle_data_len_ = len;
if (!is_memory_external_)
{
handle_data_ = decoder_.AllocateOutputData(len);
}
}
size_t GetHandleLength() const { return handle_data_len_; }
T* GetHandlePointer() { return handle_data_; }
const T* GetHandlePointer() const { return handle_data_; }
size_t Decode(const uint8_t* buffer, size_t buffer_size) { return decoder_.DecodeHandleId(buffer, buffer_size); }
// The value returned is only guaranteed to be valid if the current consumer has called SetConsumerData.
void* GetConsumerData(size_t index) const
{
void* consumer_data = nullptr;
if ((consumer_data_ != nullptr) && (index < handle_data_len_))
{
consumer_data = consumer_data_[index];
}
return consumer_data;
}
void SetConsumerData(size_t index, void* consumer_data)
{
if (index < handle_data_len_)
{
if (consumer_data_ == nullptr)
{
consumer_data_ = DecodeAllocator::Allocate<void*>(handle_data_len_);
}
consumer_data_[index] = consumer_data;
}
}
private:
PointerDecoder<format::HandleId, T> decoder_;
T* handle_data_;
size_t handle_data_len_;
size_t capacity_;
bool is_memory_external_;
void** consumer_data_{ nullptr };
};
GFXRECON_END_NAMESPACE(decode)
GFXRECON_END_NAMESPACE(gfxrecon)
#endif // GFXRECON_DECODE_HANDLE_POINTER_DECODER_H
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