1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "media/midi/usb_midi_device_android.h"
6
7#include <jni.h>
8#include <vector>
9
10#include "base/android/jni_array.h"
11#include "base/time/time.h"
12#include "jni/UsbMidiDeviceAndroid_jni.h"
13
14namespace media {
15
16UsbMidiDeviceAndroid::UsbMidiDeviceAndroid(ObjectRef raw_device,
17                                           UsbMidiDeviceDelegate* delegate)
18    : raw_device_(raw_device), delegate_(delegate) {
19  JNIEnv* env = base::android::AttachCurrentThread();
20  Java_UsbMidiDeviceAndroid_registerSelf(
21      env, raw_device_.obj(), reinterpret_cast<jlong>(this));
22}
23
24UsbMidiDeviceAndroid::~UsbMidiDeviceAndroid() {
25  JNIEnv* env = base::android::AttachCurrentThread();
26  Java_UsbMidiDeviceAndroid_close(env, raw_device_.obj());
27}
28
29std::vector<uint8> UsbMidiDeviceAndroid::GetDescriptor() {
30  JNIEnv* env = base::android::AttachCurrentThread();
31  base::android::ScopedJavaLocalRef<jbyteArray> descriptors =
32      Java_UsbMidiDeviceAndroid_getDescriptors(env, raw_device_.obj());
33
34  std::vector<uint8> ret;
35  base::android::JavaByteArrayToByteVector(env, descriptors.obj(), &ret);
36  return ret;
37}
38
39void UsbMidiDeviceAndroid::Send(int endpoint_number,
40                                const std::vector<uint8>& data) {
41  JNIEnv* env = base::android::AttachCurrentThread();
42  const uint8* head = data.size() ? &data[0] : NULL;
43  ScopedJavaLocalRef<jbyteArray> data_to_pass =
44      base::android::ToJavaByteArray(env, head, data.size());
45
46  Java_UsbMidiDeviceAndroid_send(
47      env, raw_device_.obj(), endpoint_number, data_to_pass.obj());
48}
49
50void UsbMidiDeviceAndroid::OnData(JNIEnv* env,
51                                  jobject caller,
52                                  jint endpoint_number,
53                                  jbyteArray data) {
54  std::vector<uint8> bytes;
55  base::android::JavaByteArrayToByteVector(env, data, &bytes);
56
57  const uint8* head = bytes.size() ? &bytes[0] : NULL;
58  delegate_->ReceiveUsbMidiData(this, endpoint_number, head, bytes.size(),
59                                base::TimeTicks::HighResNow());
60}
61
62bool UsbMidiDeviceAndroid::RegisterUsbMidiDevice(JNIEnv* env) {
63  return RegisterNativesImpl(env);
64}
65
66}  // namespace media
67