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
17 #include <cstdlib>
18 #include <ctime>
19
20 #include "NoiseAudioSource.h"
21
NoiseAudioSource()22 NoiseAudioSource::NoiseAudioSource() {
23 srand (static_cast <unsigned> (time(0)));
24 }
25
pull(float * buffer,int numFrames,int numChans)26 int NoiseAudioSource::pull(float* buffer, int numFrames, int numChans) {
27 int numSamples = numFrames * numChans;
28 for(int index = 0; index < numSamples; index++) {
29 buffer[index] = (float)((drand48() * 2.0) - 1.0);
30 }
31
32 return numFrames;
33 }
34
35 //
36 // JNI
37 //
38 #include <jni.h>
39
40 extern "C" {
41 JNIEXPORT jlong JNICALL
Java_com_android_smoke_megaplayer_sources_NoiseAudioSourceProvider_native_1getNativeSource(JNIEnv * env,jobject thiz)42 Java_com_android_smoke_megaplayer_sources_NoiseAudioSourceProvider_native_1getNativeSource(
43 JNIEnv *env, jobject thiz) {
44 return (jlong)new NoiseAudioSource;
45 }
46
47 } // extern "C"
48