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Atmosphere/stratosphere/libstratosphere/include/stratosphere/ipc/ipc_buffers.hpp
2018-10-31 05:04:00 +09:00

117 lines
3.2 KiB
C++

/*
* Copyright (c) 2018 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <switch.h>
#include <type_traits>
enum class IpcBufferType {
InBuffer,
OutBuffer,
InPointer,
OutPointer,
};
/* Base for In/Out Buffers. */
struct IpcBufferBase {};
struct InOutBufferBase : public IpcBufferBase {};
/* Represents an A descriptor. */
struct InBufferBase : public InOutBufferBase {};
template <typename T, BufferType e_t = BufferType_Normal>
struct InBuffer : public InBufferBase {
T *buffer;
size_t num_elements;
BufferType type;
static const BufferType expected_type = e_t;
/* Convenience. */
T& operator[](size_t i) const {
return buffer[i];
}
InBuffer(void *b, size_t n, BufferType t) : buffer((T *)b), num_elements(n/sizeof(T)), type(t) { }
};
/* Represents a B descriptor. */
struct OutBufferBase : public InOutBufferBase {};
template <typename T, BufferType e_t = BufferType_Normal>
struct OutBuffer : OutBufferBase {
T *buffer;
size_t num_elements;
BufferType type;
static const BufferType expected_type = e_t;
/* Convenience. */
T& operator[](size_t i) const {
return buffer[i];
}
OutBuffer(void *b, size_t n, BufferType t) : buffer((T *)b), num_elements(n/sizeof(T)), type(t) { }
};
/* Represents an X descriptor. */
struct InPointerBase : public IpcBufferBase {};
template <typename T>
struct InPointer : public InPointerBase {
T *pointer;
size_t num_elements;
/* Convenience. */
T& operator[](size_t i) const {
return pointer[i];
}
InPointer(void *p, size_t n) : pointer((T *)p), num_elements(n/sizeof(T)) { }
};
/* Represents a C descriptor. */
struct OutPointerWithServerSizeBase : public IpcBufferBase {};
template <typename T, size_t N>
struct OutPointerWithServerSize : public OutPointerWithServerSizeBase {
T *pointer;
static const size_t num_elements = N;
static const size_t element_size = sizeof(T);
/* Convenience. */
T& operator[](size_t i) const {
return pointer[i];
}
OutPointerWithServerSize(void *p) : pointer((T *)p) { }
OutPointerWithServerSize(void *p, size_t n) : pointer((T *)p) { }
};
struct OutPointerWithClientSizeBase : public IpcBufferBase {};
/* Represents a C descriptor with size in raw data. */
template <typename T>
struct OutPointerWithClientSize : public OutPointerWithClientSizeBase {
T *pointer;
size_t num_elements;
/* Convenience. */
T& operator[](size_t i) const {
return pointer[i];
}
OutPointerWithClientSize(void *p, size_t n) : pointer((T *)p), num_elements(n/sizeof(T)) { }
};