70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2014 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#ifndef XENIA_KERNEL_XBOXKRNL_XENUMERATOR_H_
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#define XENIA_KERNEL_XBOXKRNL_XENUMERATOR_H_
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#include <cstring>
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#include <vector>
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#include "xenia/kernel/xobject.h"
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#include "xenia/xbox.h"
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namespace xe {
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namespace kernel {
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class XEnumerator : public XObject {
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public:
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XEnumerator(KernelState* kernel_state, size_t item_capacity,
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size_t item_size);
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virtual ~XEnumerator();
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void Initialize();
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virtual uint32_t item_count() const = 0;
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virtual void WriteItems(uint8_t* buffer) = 0;
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protected:
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size_t item_capacity_;
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size_t item_size_;
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};
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class XStaticEnumerator : public XEnumerator {
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public:
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XStaticEnumerator(KernelState* kernel_state, size_t item_capacity,
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size_t item_size)
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: XEnumerator(kernel_state, item_capacity, item_size), item_count_(0) {
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buffer_.resize(item_capacity_ * item_size_);
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}
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uint32_t item_count() const override { return item_count_; }
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uint8_t* AppendItem() {
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if (item_count_ + 1 > item_capacity_) {
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return nullptr;
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}
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auto ptr = const_cast<uint8_t*>(buffer_.data() + item_count_ * item_size_);
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++item_count_;
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return ptr;
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}
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void WriteItems(uint8_t* buffer) override {
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std::memcpy(buffer, buffer_.data(), item_count_ * item_size_);
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}
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private:
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uint32_t item_count_;
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std::vector<uint8_t> buffer_;
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};
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} // namespace kernel
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} // namespace xe
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#endif // XENIA_KERNEL_XBOXKRNL_XENUMERATOR_H_
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