1 /*
2 * Copyright 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <jni.h>
18 #include <string>
19 #include <vector>
20
21 #include "SoundBoardEngine.h"
22
23 extern "C" {
24 /**
25 * Start the audio engine
26 *
27 * @param env
28 * @param instance
29 * @param jCpuIds - CPU core IDs which the audio process should affine to
30 * @return a pointer to the audio engine. This should be passed to other methods
31 */
32 JNIEXPORT jlong JNICALL
Java_com_google_oboe_samples_soundboard_MainActivity_startEngine(JNIEnv * env,jobject,jint jNumSignals)33 Java_com_google_oboe_samples_soundboard_MainActivity_startEngine(JNIEnv *env, jobject /*unused*/,
34 jint jNumSignals) {
35 LOGD("numSignals : %d", static_cast<int>(jNumSignals));
36 SoundBoardEngine *engine = new SoundBoardEngine(jNumSignals);
37
38 if (!engine->start()) {
39 LOGE("Failed to start SoundBoard Engine");
40 delete engine;
41 engine = nullptr;
42 } else {
43 LOGD("Engine Started");
44 }
45 return reinterpret_cast<jlong>(engine);
46 }
47
48 JNIEXPORT void JNICALL
Java_com_google_oboe_samples_soundboard_MainActivity_stopEngine(JNIEnv * env,jobject instance,jlong jEngineHandle)49 Java_com_google_oboe_samples_soundboard_MainActivity_stopEngine(JNIEnv *env, jobject instance,
50 jlong jEngineHandle) {
51 auto engine = reinterpret_cast<SoundBoardEngine*>(jEngineHandle);
52 if (engine) {
53 engine->stop();
54 delete engine;
55 } else {
56 LOGD("Engine invalid, call startEngine() to create");
57 }
58 }
59
60 JNIEXPORT void JNICALL
Java_com_google_oboe_samples_soundboard_MainActivity_native_1setDefaultStreamValues(JNIEnv * env,jclass type,jint sampleRate,jint framesPerBurst)61 Java_com_google_oboe_samples_soundboard_MainActivity_native_1setDefaultStreamValues(JNIEnv *env,
62 jclass type,
63 jint sampleRate,
64 jint framesPerBurst) {
65 oboe::DefaultStreamValues::SampleRate = (int32_t) sampleRate;
66 oboe::DefaultStreamValues::FramesPerBurst = (int32_t) framesPerBurst;
67 }
68
69 JNIEXPORT void JNICALL
Java_com_google_oboe_samples_soundboard_NoteListener_noteOff(JNIEnv * env,jobject thiz,jlong engine_handle,jint noteIndex)70 Java_com_google_oboe_samples_soundboard_NoteListener_noteOff(JNIEnv *env, jobject thiz,
71 jlong engine_handle, jint noteIndex) {
72 auto *engine = reinterpret_cast<SoundBoardEngine*>(engine_handle);
73 if (engine) {
74 engine->noteOff(noteIndex);
75 } else {
76 LOGE("Engine handle is invalid, call createEngine() to create a new one");
77 }
78 }
79
80 JNIEXPORT void JNICALL
Java_com_google_oboe_samples_soundboard_NoteListener_noteOn(JNIEnv * env,jobject thiz,jlong engine_handle,jint noteIndex)81 Java_com_google_oboe_samples_soundboard_NoteListener_noteOn(JNIEnv *env, jobject thiz,
82 jlong engine_handle, jint noteIndex) {
83 auto *engine = reinterpret_cast<SoundBoardEngine*>(engine_handle);
84 if (engine) {
85 engine->noteOn(noteIndex);
86 } else {
87 LOGE("Engine handle is invalid, call createEngine() to create a new one");
88 }
89 }
90
91 } // extern "C"
92