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      1 /*
      2  * Copyright (C) 2016 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 <android/log.h>
     17 
     18 #include "com_android_ndkaudio_AudioPlayer.h"
     19 
     20 #include "AudioPlayer.h"
     21 #include "WaveTableGenerator.h"
     22 #include "WaveTableOscillator.h"
     23 #include "SystemParams.h"
     24 
     25 static const char* TAG = "_com_android_ndkaudio_AudioPlayer_";
     26 
     27 using namespace ndkaudio;
     28 
     29 static int numChannels = 2;
     30 static int waveTableSize = 0;
     31 static float * waveTable = 0;
     32 
     33 static WaveTableOscillator* waveTableSource;
     34 static AudioPlayer* nativePlayer;
     35 
     36 static SLresult lastSLResult = 0;
     37 
     38 extern "C" {
     39 
     40 JNIEXPORT void JNICALL Java_com_android_ndkaudio_AudioPlayer_Create(JNIEnv*, jobject) {
     41   __android_log_print(ANDROID_LOG_INFO, TAG, "AudioPlayer_Create() ...");
     42 
     43   if (nativePlayer == 0) {
     44       waveTableSize = SystemParams::getNumBufferFrames();
     45       waveTable = WaveTableGenerator::genSinWave(waveTableSize, 1.0f);
     46       waveTableSource = new WaveTableOscillator(numChannels, waveTable, waveTableSize);
     47 
     48       nativePlayer = new AudioPlayer();
     49       nativePlayer->Open(numChannels, waveTableSource);
     50   }
     51 }
     52 
     53 JNIEXPORT void JNICALL Java_com_android_ndkaudio_AudioPlayer_Destroy(JNIEnv*, jobject) {
     54   __android_log_print(ANDROID_LOG_INFO, TAG, "AudioPlayer_Destroy() ...");
     55   nativePlayer->Close();
     56 }
     57 
     58 JNIEXPORT void JNICALL Java_com_android_ndkaudio_AudioPlayer_RealizePlayer(JNIEnv*, jobject) {
     59     __android_log_print(ANDROID_LOG_INFO, TAG, "AudioPlayer_RealizePlayer() ...");
     60     nativePlayer->RealizePlayer();
     61   }
     62 
     63 JNIEXPORT void JNICALL Java_com_android_ndkaudio_AudioPlayer_RealizeRoutingProxy(JNIEnv*, jobject) {
     64     __android_log_print(ANDROID_LOG_INFO, TAG, "AudioPlayer_RealizeRoutingProxy() ...");
     65     nativePlayer->RealizeRoutingProxy();
     66   }
     67 
     68 JNIEXPORT void JNICALL Java_com_android_ndkaudio_AudioPlayer_Start(JNIEnv*, jobject) {
     69   __android_log_print(ANDROID_LOG_INFO, TAG, "AudioPlayer_Start() ...");
     70   nativePlayer->Start();
     71 }
     72 
     73 JNIEXPORT void JNICALL Java_com_android_ndkaudio_AudioPlayer_Stop(JNIEnv*, jobject) {
     74   __android_log_print(ANDROID_LOG_INFO, TAG, "AudioPlayer_Stop() ...");
     75   nativePlayer->Stop();
     76 }
     77 
     78 JNIEXPORT jobject JNICALL Java_com_android_ndkaudio_AudioPlayer_GetRoutingInterface(JNIEnv*, jobject) {
     79   __android_log_print(ANDROID_LOG_INFO, TAG, "AudioPlayer_GetRoutingInterface() ...");
     80 
     81   SLAndroidConfigurationItf configItf = nativePlayer->getConfigItf();
     82   __android_log_print(ANDROID_LOG_INFO, TAG, "  configItf:%p", configItf);
     83   jobject routingObj = 0;
     84   lastSLResult = (*configItf)->AcquireJavaProxy(configItf, SL_ANDROID_JAVA_PROXY_ROUTING, &routingObj);
     85   __android_log_print(ANDROID_LOG_INFO, TAG, "  routingObj:%p", routingObj);
     86   return routingObj;
     87 }
     88 
     89 JNIEXPORT void JNICALL Java_com_android_ndkaudio_AudioPlayer_ReleaseRoutingInterface(JNIEnv*, jobject, jobject /*proxyObj*/) {
     90   __android_log_print(ANDROID_LOG_INFO, TAG, "AudioPlayer_ReleaseRoutingInterface() ...");
     91 
     92   SLAndroidConfigurationItf configItf = nativePlayer->getConfigItf();
     93   lastSLResult = (*configItf)->ReleaseJavaProxy(configItf, SL_ANDROID_JAVA_PROXY_ROUTING/*, proxyObj*/);
     94 }
     95 
     96 JNIEXPORT jlong JNICALL Java_com_android_ndkaudio_AudioPlayer_GetLastSLResult(JNIEnv*, jobject) {
     97     return lastSLResult;
     98 }
     99 
    100 JNIEXPORT void JNICALL Java_com_android_ndkaudio_AudioPlayer_ClearLastSLResult(JNIEnv*, jobject) {
    101     lastSLResult = 0;
    102 }
    103 
    104 } // extern "C"
    105