1 files changed, 135 insertions, 0 deletions
diff --git a/src/server/PortAudioDriver.hpp b/src/server/PortAudioDriver.hpp
new file mode 100644
index 00000000..f65fc871
--- /dev/null
+++ b/src/server/PortAudioDriver.hpp
@@ -0,0 +1,135 @@
+/*
+  This file is part of Ingen.
+  Copyright 2007-2017 David Robillard <http://drobilla.net/>
+
+  Ingen is free software: you can redistribute it and/or modify it under the
+  terms of the GNU Affero General Public License as published by the Free
+  Software Foundation, either version 3 of the License, or any later version.
+
+  Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU Affero General Public License for details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_ENGINE_PORTAUDIODRIVER_HPP
+#define INGEN_ENGINE_PORTAUDIODRIVER_HPP
+
+#include "Driver.hpp"
+#include "EnginePort.hpp"
+#include "ingen_config.h"
+#include "types.hpp"
+
+#include "ingen/URI.hpp"
+#include "lv2/atom/forge.h"
+#include "raul/Semaphore.hpp"
+
+#include <portaudio.h>
+
+#include <atomic>
+#include <cstddef>
+#include <cstdint>
+#include <memory>
+
+namespace Raul { class Path; }
+
+namespace ingen {
+
+class Atom;
+
+namespace server {
+
+class Buffer;
+class DuplexPort;
+class Engine;
+class FrameTimer;
+class RunContext;
+
+class PortAudioDriver : public Driver
+{
+public:
+	explicit PortAudioDriver(Engine& engine);
+	~PortAudioDriver();
+
+	bool attach();
+
+	bool activate() override;
+	void deactivate() override;
+
+	EnginePort* create_port(DuplexPort* graph_port) override;
+	EnginePort* get_port(const Raul::Path& path) override;
+
+	void rename_port(const Raul::Path& old_path, const Raul::Path& new_path) override;
+	void port_property(const Raul::Path& path, const URI& uri, const Atom& value) override;
+	void add_port(RunContext& context, EnginePort* port) override;
+	void remove_port(RunContext& context, EnginePort* port) override;
+	void register_port(EnginePort& port) override;
+	void unregister_port(EnginePort& port) override;
+
+	void append_time_events(RunContext& context, Buffer& buffer) override {}
+
+	SampleCount frame_time() const override;
+
+	int real_time_priority() override { return 80; }
+
+	SampleCount    block_length() const override { return _block_length; }
+	size_t         seq_size()     const override { return _seq_size; }
+	SampleCount    sample_rate()  const override { return _sample_rate; }
+
+private:
+	friend class PortAudioPort;
+
+	inline static int
+	pa_process_cb(const void*                     inputs,
+	              void*                           outputs,
+	              unsigned long                   nframes,
+	              const PaStreamCallbackTimeInfo* time,
+	              PaStreamCallbackFlags           flags,
+	              void*                           handle) {
+		return ((PortAudioDriver*)handle)->process_cb(
+			inputs, outputs, nframes, time, flags);
+	}
+
+	int process_cb(const void*                     inputs,
+	               void*                           outputs,
+	               unsigned long                   nframes,
+	               const PaStreamCallbackTimeInfo* time,
+	               PaStreamCallbackFlags           flags);
+
+	void pre_process_port(RunContext&  context,
+	                      EnginePort*  port,
+	                      const void*  inputs,
+	                      void*        outputs);
+
+	void post_process_port(RunContext& context,
+	                       EnginePort* port,
+	                       const void* inputs,
+	                       void*       outputs);
+
+protected:
+	typedef boost::intrusive::slist<EnginePort,
+	                                boost::intrusive::cache_last<true>
+	                                > Ports;
+
+	Engine&                     _engine;
+	Ports                       _ports;
+	PaStreamParameters          _inputParameters;
+	PaStreamParameters          _outputParameters;
+	Raul::Semaphore             _sem;
+	std::unique_ptr<FrameTimer> _timer;
+	PaStream*                   _stream;
+	size_t                      _seq_size;
+	uint32_t                    _block_length;
+	uint32_t                    _sample_rate;
+	uint32_t                    _n_inputs;
+	uint32_t                    _n_outputs;
+	std::atomic<bool>           _flag;
+	bool                        _is_activated;
+};
+
+} // namespace server
+} // namespace ingen
+
+#endif // INGEN_ENGINE_PORTAUDIODRIVER_HPP