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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_MIDI_MIDI_MANAGER_MAC_H_
#define MEDIA_MIDI_MIDI_MANAGER_MAC_H_
#include <CoreMIDI/MIDIServices.h>
#include <map>
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/threading/thread.h"
#include "media/midi/midi_export.h"
#include "media/midi/midi_manager.h"
#include "media/midi/midi_port_info.h"
namespace media {
namespace midi {
class MIDI_EXPORT MidiManagerMac final : public MidiManager {
public:
MidiManagerMac();
~MidiManagerMac() override;
// MidiManager implementation.
void StartInitialization() override;
void DispatchSendMidiData(MidiManagerClient* client,
uint32 port_index,
const std::vector<uint8>& data,
double timestamp) override;
private:
// Runs a closure on |client_thread_|. It starts the thread if it isn't
// running and the destructor isn't called.
// Caller can bind base::Unretained(this) to |closure| since we join
// |client_thread_| in the destructor.
void RunOnClientThread(const base::Closure& closure);
// Initializes CoreMIDI on |client_thread_| asynchronously. Called from
// StartInitialization().
void InitializeCoreMIDI();
// CoreMIDI callback for MIDI notification.
// Receives MIDI related event notifications from CoreMIDI.
static void ReceiveMidiNotifyDispatch(const MIDINotification* message,
void* refcon);
void ReceiveMidiNotify(const MIDINotification* message);
// CoreMIDI callback for MIDI data.
// Each callback can contain multiple packets, each of which can contain
// multiple MIDI messages.
static void ReadMidiDispatch(const MIDIPacketList* packet_list,
void* read_proc_refcon,
void* src_conn_refcon);
virtual void ReadMidi(MIDIEndpointRef source, const MIDIPacketList *pktlist);
// An internal callback that runs on MidiSendThread.
void SendMidiData(MidiManagerClient* client,
uint32 port_index,
const std::vector<uint8>& data,
double timestamp);
// CoreMIDI
MIDIClientRef midi_client_;
MIDIPortRef coremidi_input_;
MIDIPortRef coremidi_output_;
std::vector<uint8> midi_buffer_;
// Keeps track of the index (0-based) for each of our sources.
typedef std::map<MIDIEndpointRef, uint32> SourceMap;
SourceMap source_map_;
// Keeps track of all destinations.
typedef std::vector<MIDIEndpointRef> DestinationVector;
DestinationVector destinations_;
// |client_thread_| is used to handle platform dependent operations.
base::Thread client_thread_;
// Sets true on destructing object to avoid starting |client_thread_| again.
bool shutdown_;
DISALLOW_COPY_AND_ASSIGN(MidiManagerMac);
};
} // namespace midi
} // namespace media
#endif // MEDIA_MIDI_MIDI_MANAGER_MAC_H_
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