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48 lines
1.3 KiB
48 lines
1.3 KiB
/*
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* Copyright 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <cstdlib>
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#include <ctime>
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#include "NoiseAudioSource.h"
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NoiseAudioSource::NoiseAudioSource() {
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srand (static_cast <unsigned> (time(0)));
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}
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int NoiseAudioSource::pull(float* buffer, int numFrames, int numChans) {
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int numSamples = numFrames * numChans;
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for(int index = 0; index < numSamples; index++) {
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buffer[index] = (float)((drand48() * 2.0) - 1.0);
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}
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return numFrames;
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}
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//
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// JNI
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//
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#include <jni.h>
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extern "C" {
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JNIEXPORT jlong JNICALL
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Java_com_android_smoke_megaplayer_sources_NoiseAudioSourceProvider_native_1getNativeSource(
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JNIEnv *env, jobject thiz) {
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return (jlong)new NoiseAudioSource;
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}
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} // extern "C"
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