htclow: add Channel wrapper class

libraries/libstratosphere/source/htclow/htclow_channel.hpp

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2018-2020 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 <stratosphere.hpp>
+#include "htclow_manager.hpp"
+
+namespace ams::htclow {
+
+    class Channel final {
+        private:
+            HtclowManager *m_manager;
+            ChannelType m_channel;
+        public:
+            constexpr Channel(HtclowManager *manager) : m_manager(manager), m_channel() { /* ... */ }
+            constexpr ~Channel() { m_channel = {}; }
+
+            ChannelType *GetBase() { return std::addressof(m_channel); }
+        public:
+            Result Open(const Module *module, ChannelId id);
+            void Close();
+
+            ChannelState GetChannelState();
+            os::EventType *GetChannelStateEvent();
+
+            Result Connect();
+            Result Flush();
+            void Shutdown();
+
+            Result Receive(s64 *out, void *dst, s64 size, ReceiveOption option);
+            Result Send(s64 *out, const void *src, s64 size, ReceiveOption option);
+
+            void SetConfig(const ChannelConfig &config);
+            void SetReceiveBuffer(void *buf, size_t size);
+            void SetSendBuffer(void *buf, size_t size);
+            void SetSendBufferWithData(const void *buf, size_t size);
+
+            Result WaitReceive(s64 size);
+            Result WaitReceive(s64 size, os::EventType *event);
+        private:
+            void WaitEvent(os::EventType *event, bool);
+            Result ReceiveInternal(s64 *out, void *dst, s64 size, ReceiveOption option);
+            Result WaitReceiveInternal(s64 size, os::EventType *event);
+    };
+
+}