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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/compiler_specific.h"
#include "base/threading/thread.h"
#include "media/midi/midi_manager.h"
#include "media/midi/midi_port_info.h"
namespace media {
class MEDIA_EXPORT MidiManagerMac : public MidiManager {
public:
MidiManagerMac();
virtual ~MidiManagerMac();
// MidiManager implementation.
virtual bool Initialize() OVERRIDE;
virtual void DispatchSendMidiData(MidiManagerClient* client,
uint32 port_index,
const std::vector<uint8>& data,
double timestamp) OVERRIDE;
private:
// CoreMIDI callback for MIDI data.
// Each callback can contain multiple packets, each of which can contain
// multiple MIDI messages.
static void ReadMidiDispatch(
const MIDIPacketList *pktlist,
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);
// Helper
static media::MidiPortInfo GetPortInfoFromEndpoint(MIDIEndpointRef endpoint);
static double MIDITimeStampToSeconds(MIDITimeStamp timestamp);
static MIDITimeStamp SecondsToMIDITimeStamp(double seconds);
// CoreMIDI
MIDIClientRef midi_client_;
MIDIPortRef coremidi_input_;
MIDIPortRef coremidi_output_;
enum{ kMaxPacketListSize = 512 };
char midi_buffer_[kMaxPacketListSize];
MIDIPacketList* packet_list_;
MIDIPacket* midi_packet_;
typedef std::map<MIDIEndpointRef, uint32> SourceMap;
// Keeps track of the index (0-based) for each of our sources.
SourceMap source_map_;
// Keeps track of all destinations.
std::vector<MIDIEndpointRef> destinations_;
// |send_thread_| is used to send MIDI data.
base::Thread send_thread_;
DISALLOW_COPY_AND_ASSIGN(MidiManagerMac);
};
} // namespace media
#endif // MEDIA_MIDI_MIDI_MANAGER_MAC_H_
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