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/*
** Copyright (c) 2019,2021 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_ENCODE_HANDLE_UNWRAP_MEMORY_H
#define GFXRECON_ENCODE_HANDLE_UNWRAP_MEMORY_H
#include "util/defines.h"
#include <iterator>
#include <cstddef>
#include <vector>
GFXRECON_BEGIN_NAMESPACE(gfxrecon)
GFXRECON_BEGIN_NAMESPACE(encode)
typedef std::vector<uint8_t> HandleUnwrapBuffer;
class HandleUnwrapMemory
{
public:
HandleUnwrapMemory() : current_buffer_(0) {}
uint8_t* GetBuffer(size_t len)
{
HandleUnwrapBuffer* next_buffer = nullptr;
size_t next_index = current_buffer_++;
if (next_index < buffers_.size())
{
next_buffer = &buffers_[next_index];
if (len > next_buffer->size())
{
next_buffer->resize(len);
}
}
else
{
buffers_.emplace_back(len);
next_buffer = &buffers_[next_index];
}
return next_buffer->data();
}
uint8_t* GetFilledBuffer(const uint8_t* data, size_t len)
{
HandleUnwrapBuffer* next_buffer = nullptr;
size_t next_index = current_buffer_++;
if (next_index < buffers_.size())
{
next_buffer = &buffers_[next_index];
next_buffer->clear();
std::copy(data, data + len, std::back_inserter(*next_buffer));
}
else
{
buffers_.emplace_back(data, data + len);
next_buffer = &buffers_[next_index];
}
return next_buffer->data();
}
void Reset() { current_buffer_ = 0; }
private:
size_t current_buffer_;
std::vector<HandleUnwrapBuffer> buffers_;
};
GFXRECON_END_NAMESPACE(encode)
GFXRECON_END_NAMESPACE(gfxrecon)
#endif // GFXRECON_ENCODE_HANDLE_UNWRAP_MEMORY_H
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