12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182 |
- // 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 <stddef.h>
- #include <memory>
- #include "base/bind.h"
- #include "base/synchronization/lock.h"
- #include "media/midi/midi_jni_headers/UsbMidiDeviceFactoryAndroid_jni.h"
- #include "media/midi/usb_midi_device_android.h"
- using base::android::JavaParamRef;
- namespace midi {
- namespace {
- using Callback = UsbMidiDevice::Factory::Callback;
- } // namespace
- UsbMidiDeviceFactoryAndroid::UsbMidiDeviceFactoryAndroid()
- : delegate_(nullptr) {}
- UsbMidiDeviceFactoryAndroid::~UsbMidiDeviceFactoryAndroid() {
- JNIEnv* env = base::android::AttachCurrentThread();
- if (!raw_factory_.is_null())
- Java_UsbMidiDeviceFactoryAndroid_close(env, raw_factory_);
- }
- 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, pointer));
- delegate_ = delegate;
- callback_ = std::move(callback);
- if (Java_UsbMidiDeviceFactoryAndroid_enumerateDevices(env, raw_factory_)) {
- // Asynchronous operation.
- return;
- }
- // No devices are found.
- UsbMidiDevice::Devices devices;
- std::move(callback_).Run(true, &devices);
- }
- // Called from the Java world.
- void UsbMidiDeviceFactoryAndroid::OnUsbMidiDeviceRequestDone(
- JNIEnv* env,
- const JavaParamRef<jobjectArray>& devices) {
- UsbMidiDevice::Devices devices_to_pass;
- for (auto raw_device : devices.ReadElements<jobject>()) {
- devices_to_pass.push_back(
- std::make_unique<UsbMidiDeviceAndroid>(raw_device, delegate_));
- }
- std::move(callback_).Run(true, &devices_to_pass);
- }
- // Called from the Java world.
- void UsbMidiDeviceFactoryAndroid::OnUsbMidiDeviceAttached(
- JNIEnv* env,
- const JavaParamRef<jobject>& device) {
- delegate_->OnDeviceAttached(
- std::make_unique<UsbMidiDeviceAndroid>(device, delegate_));
- }
- // Called from the Java world.
- void UsbMidiDeviceFactoryAndroid::OnUsbMidiDeviceDetached(
- JNIEnv* env,
- jint index) {
- delegate_->OnDeviceDetached(index);
- }
- } // namespace midi
|