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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.
#include <CoreMIDI/MIDIServices.h>
#include <stdint.h>
#include <vector>
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/synchronization/lock.h"
#include "base/thread_annotations.h"
#include "base/threading/thread.h"
#include "media/midi/midi_export.h"
#include "media/midi/midi_manager.h"
#include "media/midi/midi_service.mojom.h"
namespace midi {
class MidiService;
class MIDI_EXPORT MidiManagerMac final : public MidiManager {
explicit MidiManagerMac(MidiService* service);
~MidiManagerMac() override;
// MidiManager implementation.
void StartInitialization() override;
void DispatchSendMidiData(MidiManagerClient* client,
uint32_t port_index,
const std::vector<uint8_t>& data,
base::TimeTicks timestamp) override;
// Initializes CoreMIDI on |client_thread_| asynchronously. Called from
// StartInitialization().
void InitializeCoreMIDI();
// Completes CoreMIDI initialization and asks the thread that ran
// StartInitialization() to call CompleteStartSession() safely.
void CompleteCoreMIDIInitialization(mojom::Result result);
// 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);
// An internal callback that runs on MidiSendThread.
void SendMidiData(MidiManagerClient* client,
uint32_t port_index,
const std::vector<uint8_t>& data,
base::TimeTicks timestamp);
// CoreMIDI client reference.
MIDIClientRef midi_client_ GUARDED_BY(midi_client_lock_) = 0;
base::Lock midi_client_lock_;
// Following members can be accessed without any lock on kClientTaskRunner,
// or on I/O thread before calling BindInstance() or after calling
// UnbindInstance().
// CoreMIDI other references.
MIDIPortRef midi_input_ = 0;
MIDIPortRef midi_output_ = 0;
std::vector<uint8_t> midi_buffer_;
// Keeps track of all sources.
std::vector<MIDIEndpointRef> sources_;
// Keeps track of all destinations.
std::vector<MIDIEndpointRef> destinations_;
} // namespace midi