blob: 6302572f9332a2050b440c9b59447589a67dfd67 [file] [log] [blame]
// 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.
#include "media/midi/usb_midi_device_factory_android.h"
#include <jni.h>
#include <vector>
#include "base/android/scoped_java_ref.h"
#include "base/bind.h"
#include "base/containers/hash_tables.h"
#include "base/lazy_instance.h"
#include "base/memory/scoped_vector.h"
#include "base/message_loop/message_loop.h"
#include "base/synchronization/lock.h"
#include "jni/UsbMidiDeviceFactoryAndroid_jni.h"
#include "media/midi/usb_midi_device_android.h"
namespace media {
namespace {
typedef UsbMidiDevice::Factory::Callback Callback;
} // namespace
UsbMidiDeviceFactoryAndroid::UsbMidiDeviceFactoryAndroid() : delegate_(NULL) {}
UsbMidiDeviceFactoryAndroid::~UsbMidiDeviceFactoryAndroid() {
JNIEnv* env = base::android::AttachCurrentThread();
if (!raw_factory_.is_null())
Java_UsbMidiDeviceFactoryAndroid_close(
env, raw_factory_.obj(), base::android::GetApplicationContext());
}
void UsbMidiDeviceFactoryAndroid::EnumerateDevices(
UsbMidiDeviceDelegate* delegate,
Callback callback) {
DCHECK(!delegate_);
JNIEnv* env = base::android::AttachCurrentThread();
uintptr_t pointer = reinterpret_cast<uintptr_t>(this);
raw_factory_.Reset(Java_UsbMidiDeviceFactoryAndroid_create(
env, base::android::GetApplicationContext(), pointer));
delegate_ = delegate;
callback_ = callback;
if (Java_UsbMidiDeviceFactoryAndroid_enumerateDevices(
env, raw_factory_.obj(), base::android::GetApplicationContext())) {
// Asynchronous operation.
return;
}
// No devices are found.
ScopedVector<UsbMidiDevice> devices;
callback.Run(true, &devices);
}
// Called from the Java world.
void UsbMidiDeviceFactoryAndroid::OnUsbMidiDeviceRequestDone(
JNIEnv* env,
jobject caller,
jobjectArray devices) {
size_t size = env->GetArrayLength(devices);
ScopedVector<UsbMidiDevice> devices_to_pass;
for (size_t i = 0; i < size; ++i) {
UsbMidiDeviceAndroid::ObjectRef raw_device(
env, env->GetObjectArrayElement(devices, i));
devices_to_pass.push_back(new UsbMidiDeviceAndroid(raw_device, delegate_));
}
callback_.Run(true, &devices_to_pass);
}
// Called from the Java world.
void UsbMidiDeviceFactoryAndroid::OnUsbMidiDeviceAttached(
JNIEnv* env,
jobject caller,
jobject device) {
UsbMidiDeviceAndroid::ObjectRef raw_device(env, device);
delegate_->OnDeviceAttached(
scoped_ptr<UsbMidiDevice>(
new UsbMidiDeviceAndroid(raw_device, delegate_)));
}
// Called from the Java world.
void UsbMidiDeviceFactoryAndroid::OnUsbMidiDeviceDetached(
JNIEnv* env,
jobject caller,
jint index) {
delegate_->OnDeviceDetached(index);
}
bool UsbMidiDeviceFactoryAndroid::RegisterUsbMidiDeviceFactory(JNIEnv* env) {
return RegisterNativesImpl(env);
}
} // namespace media