blob: cbe03c5fee776a69e1ec715e40a71a7edd936c1e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
// Copyright 2014 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_ALSA_H_
#define MEDIA_MIDI_MIDI_MANAGER_ALSA_H_
#include <alsa/asoundlib.h>
#include <map>
#include <vector>
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/synchronization/lock.h"
#include "base/threading/thread.h"
#include "media/midi/midi_manager.h"
namespace media {
class MidiManagerAlsa : public MidiManager {
public:
MidiManagerAlsa();
~MidiManagerAlsa() override;
// MidiManager implementation.
void StartInitialization() override;
void DispatchSendMidiData(MidiManagerClient* client,
uint32 port_index,
const std::vector<uint8>& data,
double timestamp) override;
private:
// An internal callback that runs on MidiSendThread.
void SendMidiData(uint32 port_index,
const std::vector<uint8>& data);
void EventReset();
void EventLoop();
// Alsa seq handles.
snd_seq_t* in_client_;
snd_seq_t* out_client_;
int out_client_id_;
// One input port, many output ports.
int in_port_;
std::vector<int> out_ports_;
// Mapping from Alsa client:port to our index.
typedef std::map<int, uint32> SourceMap;
SourceMap source_map_;
// Alsa event <-> MIDI coders.
snd_midi_event_t* decoder_;
typedef std::vector<snd_midi_event_t*> EncoderList;
EncoderList encoders_;
base::Thread send_thread_;
base::Thread event_thread_;
bool event_thread_shutdown_; // guarded by shutdown_lock_
base::Lock shutdown_lock_; // guards event_thread_shutdown_
DISALLOW_COPY_AND_ASSIGN(MidiManagerAlsa);
};
} // namespace media
#endif // MEDIA_MIDI_MIDI_MANAGER_ALSA_H_
|
