1 /*
2 * Copyright 2020 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 #include <jni.h>
17
18 #include <android/log.h>
19
20 #include "AppCallbackAudioSink.h"
21
22 static const char * const TAG = "AppCallbackAudioSink";
23
AppCallbackAudioSink(JNIEnv * env,jobject callbackObj)24 AppCallbackAudioSink::AppCallbackAudioSink(JNIEnv *env, jobject callbackObj) {
25 jint rs = env->GetJavaVM(&mJVM);
26 mCallbackObj = env->NewGlobalRef(callbackObj);
27
28 jclass callbackClass = env->GetObjectClass(mCallbackObj);
29 mMIDonDataReady = env->GetMethodID(callbackClass, "onDataReady", "([FI)V");
30 }
31
init(int numFrames,int numChannels)32 void AppCallbackAudioSink::init(int numFrames, int numChannels) {
33 JNIEnv * env;
34 int getEnvStat = mJVM->GetEnv((void **)&env, JNI_VERSION_1_6);
35
36 if (getEnvStat == JNI_EDETACHED) {
37 int rs = mJVM->AttachCurrentThread(&env, NULL);
38 }
39
40 mAudioDataArrayLength = numChannels * numFrames;
41 mAudioDataArray = env->NewFloatArray(mAudioDataArrayLength);
42 mAudioDataArray = (jfloatArray)env->NewGlobalRef(mAudioDataArray);
43
44 if (getEnvStat == JNI_EDETACHED) {
45 mJVM->DetachCurrentThread();
46 }
47 }
48
start()49 void AppCallbackAudioSink::start() {
50 }
51
stop()52 void AppCallbackAudioSink::stop() {
53 JNIEnv * env;
54 int getEnvStat = mJVM->GetEnv((void **)&env, JNI_VERSION_1_6);
55
56 if (getEnvStat == JNI_EDETACHED) {
57 int rs = mJVM->AttachCurrentThread(&env, NULL);
58 }
59
60 releaseJNIResources(env);
61
62 if (getEnvStat == JNI_EDETACHED) {
63 mJVM->DetachCurrentThread();
64 }
65 }
66
push(float * audioData,int numFrames,int numChannels)67 void AppCallbackAudioSink::push(float* audioData, int numFrames, int numChannels) {
68 // __android_log_print(ANDROID_LOG_INFO, TAG, "push(numFrames:%d, numChannels:%d)",
69 // numFrames, numChannels);
70
71 // Get the local JNI env
72 JNIEnv * env;
73 int getEnvStat = mJVM->GetEnv((void **)&env, JNI_VERSION_1_6);
74
75 if (getEnvStat == JNI_EDETACHED) {
76 int rs = mJVM->AttachCurrentThread(&env, NULL);
77 }
78
79 // put the float* into a jfloatarray
80 env->SetFloatArrayRegion(mAudioDataArray, 0, mAudioDataArrayLength, audioData);
81 env->CallVoidMethod(mCallbackObj, mMIDonDataReady, mAudioDataArray, numFrames);
82
83 if (getEnvStat == JNI_EDETACHED) {
84 mJVM->DetachCurrentThread();
85 }
86 }
87
releaseJNIResources(JNIEnv * env)88 void AppCallbackAudioSink::releaseJNIResources(JNIEnv *env) {
89 env->DeleteGlobalRef(mCallbackObj);
90 }
91
92 extern "C" {
93 JNIEXPORT jlong JNICALL
Java_org_hyphonate_megaaudio_recorder_sinks_AppCallbackAudioSinkProvider_allocOboeSinkN(JNIEnv * env,jobject thiz,jobject callback_obj)94 Java_org_hyphonate_megaaudio_recorder_sinks_AppCallbackAudioSinkProvider_allocOboeSinkN(
95 JNIEnv *env, jobject thiz, jobject callback_obj) {
96 AppCallbackAudioSink* sink = new AppCallbackAudioSink(env, callback_obj);
97 return (jlong)sink;
98 }
99
100 JNIEXPORT void JNICALL
Java_org_hyphonate_megaaudio_recorder_sinks_AppCallbackAudioSinkProvider_releaseJNIResourcesN(JNIEnv * env,jobject thiz,jlong oboe_sink)101 Java_org_hyphonate_megaaudio_recorder_sinks_AppCallbackAudioSinkProvider_releaseJNIResourcesN(
102 JNIEnv *env, jobject thiz, jlong oboe_sink) {
103 AppCallbackAudioSink* sink = (AppCallbackAudioSink*)oboe_sink;
104 sink->releaseJNIResources(env);
105 }
106
107 } // extern "C"
108