mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-24 12:52:07 +00:00
112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stratosphere.hpp>
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namespace ams::htclow {
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enum PacketType : u16 {
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PacketType_Data = 24,
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PacketType_MaxData = 25,
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PacketType_Error = 26,
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};
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static constexpr inline u32 HtcGen2Signature = 0xA79F3540;
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struct PacketHeader {
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u32 signature;
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u32 offset;
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u32 reserved;
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u32 body_size;
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s16 version;
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PacketType packet_type;
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impl::ChannelInternalType channel;
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u64 share;
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};
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static_assert(util::is_pod<PacketHeader>::value);
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static_assert(sizeof(PacketHeader) == 0x20);
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static constexpr inline size_t PacketBodySizeMax = 0x3E000;
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struct PacketBody {
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u8 data[PacketBodySizeMax];
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};
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template<typename HeaderType>
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class BasePacket {
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private:
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mem::StandardAllocator *m_allocator;
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u8 *m_header;
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int m_packet_size;
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public:
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BasePacket(mem::StandardAllocator *allocator, int packet_size) : m_allocator(allocator), m_header(nullptr), m_packet_size(packet_size) {
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AMS_ASSERT(packet_size >= static_cast<int>(sizeof(HeaderType)));
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m_header = static_cast<u8 *>(m_allocator->Allocate(m_packet_size));
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}
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virtual ~BasePacket() {
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if (m_header != nullptr) {
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m_allocator->Free(m_header);
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}
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}
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bool IsAllocationSucceeded() const {
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return m_header != nullptr;
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}
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HeaderType *GetHeader() {
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return reinterpret_cast<HeaderType *>(m_header);
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}
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const HeaderType *GetHeader() const {
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return reinterpret_cast<const HeaderType *>(m_header);
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}
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int GetBodySize() const {
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return m_packet_size - sizeof(HeaderType);
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}
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u8 *GetBody() const {
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if (this->GetBodySize() > 0) {
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return m_header + sizeof(HeaderType);
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} else {
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return nullptr;
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}
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}
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void CopyBody(const void *src, int src_size) {
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AMS_ASSERT(this->GetBodySize() >= 0);
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std::memcpy(this->GetBody(), src, src_size);
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}
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};
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class Packet : public BasePacket<PacketHeader>, public util::IntrusiveListBaseNode<Packet> {
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public:
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using BasePacket<PacketHeader>::BasePacket;
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};
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struct PacketDeleter {
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mem::StandardAllocator *m_allocator;
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void operator()(Packet *packet) {
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std::destroy_at(packet);
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m_allocator->Free(packet);
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}
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};
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}
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