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// Copyright 2015 The Chromium Authors
// 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_ANDROID_H_
#define MEDIA_MIDI_MIDI_MANAGER_ANDROID_H_
#include <jni.h>
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <unordered_map>
#include <vector>
#include "base/android/scoped_java_ref.h"
#include "base/synchronization/lock.h"
#include "base/time/time.h"
#include "media/midi/midi_input_port_android.h"
#include "media/midi/midi_manager.h"
namespace midi {
class MidiDeviceAndroid;
class MidiOutputPortAndroid;
class MidiService;
// MidiManagerAndroid is a MidiManager subclass for Android M or newer. For
// older android OSes, we use MidiManagerUsb.
class MidiManagerAndroid final : public MidiManager,
public MidiInputPortAndroid::Delegate {
public:
explicit MidiManagerAndroid(MidiService* service);
~MidiManagerAndroid() override;
// MidiManager implementation.
void StartInitialization() override;
void DispatchSendMidiData(MidiManagerClient* client,
uint32_t port_index,
const std::vector<uint8_t>& data,
base::TimeTicks timestamp) override;
// MidiInputPortAndroid::Delegate implementation.
void OnReceivedData(MidiInputPortAndroid*,
const uint8_t* data,
size_t size,
base::TimeTicks timestamp) override;
// Called from the Java world.
void OnInitialized(JNIEnv* env,
const base::android::JavaParamRef<jobjectArray>& devices);
void OnInitializationFailed(JNIEnv* env);
void OnAttached(JNIEnv* env,
const base::android::JavaParamRef<jobject>& device);
void OnDetached(JNIEnv* env,
const base::android::JavaParamRef<jobject>& device);
private:
void AddDevice(std::unique_ptr<MidiDeviceAndroid> device);
void AddInputPortAndroid(MidiInputPortAndroid* port,
MidiDeviceAndroid* device);
void AddOutputPortAndroid(MidiOutputPortAndroid* port,
MidiDeviceAndroid* device);
// TODO(toyoshim): Remove |lock_| once dynamic instantiation mode is enabled
// by default. This protects objects allocated on the I/O thread from doubly
// released on the main thread.
base::Lock lock_;
std::vector<std::unique_ptr<MidiDeviceAndroid>> devices_;
// All ports held in |devices_|. Each device has ownership of ports, but we
// can store pointers here because a device will keep its ports while it is
// alive.
std::vector<MidiInputPortAndroid*> all_input_ports_;
// A dictionary from a port to its index.
// input_port_to_index_[all_input_ports_[i]] == i for each valid |i|.
std::unordered_map<MidiInputPortAndroid*, size_t> input_port_to_index_;
// Ditto for output ports.
std::vector<MidiOutputPortAndroid*> all_output_ports_;
std::unordered_map<MidiOutputPortAndroid*, size_t> output_port_to_index_;
base::android::ScopedJavaGlobalRef<jobject> raw_manager_;
};
} // namespace midi
#endif // MEDIA_MIDI_MIDI_MANAGER_ANDROID_H_
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