android - 获取错误作为 libOpenSLES Leaving BufferQueue::Enqueue (SL_RESULT_BUFFER_INSUFFICIENT)

Question

您好，我正在研究 Android JNI 音频部分，在 jni 代码下方，我根据我的逻辑从 android 调用了 12 次。一旦播放第一个剪辑，我就会向 android 发送回调事件，然后再次调用 selectClip() 来播放音频剪辑。我可以玩 2 次，但在第三次调用应用程序时抛出错误，如 libOpenSLES Leaving BufferQueue : SL_RESULT_BUFFER_INSUFFICIENT。我错过了什么吗？任何关于解决这个问题的指针？

jboolean flag=JNI_TRUE;
jint clipNote = 0;
// select the desired clip and play count, and enqueue the first buffer if idle
JNIEXPORT jboolean JNICALL Java_com_example_nativeaudio_NativeAudio_selectClip(JNIEnv * env, jobject obj,
            jint count)
{
    // sleep logic
    while((clock() - t)/1000 < 2000) {
        usleep(10000); // sleep for 10ms
    }

    if(clipNote < 12) {
        if(flag == JNI_TRUE) {
            __android_log_print(ANDROID_LOG_DEBUG , "CustomTag", " flag = true : ClipNote : %d",clipNote);
     clipNote = clipNote + 1;
     nextBuffer = (short *) audio1;
     nextSize = sizeof(audio1);

    nextCount = count/2000;
  if (nextSize > 0) {
        // here we only enqueue one buffer because it is a long clip,
        // but for streaming playback we would typically enqueue at least 2 buffers to start
        SLresult result;
        result = (*bqPlayerBufferQueue)->Enqueue(bqPlayerBufferQueue, nextBuffer, nextSize);
        if (SL_RESULT_SUCCESS != result) {
                return JNI_FALSE;
        }
    }
    // callback to android
    jclass cls = (*env)->GetObjectClass(env, obj);
    jmethodID mid = (*env)->GetMethodID(env, cls, "callBackStart", "(I)V");
    if (mid == 0) {
            return;
    }
    flag=JNI_FALSE;
    (*env)->CallVoidMethod(env, obj, mid, clipNote);
} else {
    // callback to android
    __android_log_print(ANDROID_LOG_DEBUG , "CustomTag", " flag = false");
    jclass cls = (*env)->GetObjectClass(env, obj);
    jmethodID mid = (*env)->GetMethodID(env, cls, "callBackRelease", "(I)V");
    if (mid == 0) {
        return;
    }
    flag = JNI_TRUE;
    (*env)->CallVoidMethod(env, obj, mid, count);
}
t = clock();
} else {
    SLresult result;
    // make sure the asset audio player was created
    if (NULL != fdPlayerPlay) {
        result = (*fdPlayerPlay)>SetPlayState(fdPlayerPlay,SL_PLAYSTATE_PAUSED);
        assert(SL_RESULT_SUCCESS == result);
        (void)result;
}
}
return JNI_TRUE;
}

Answer 1

由于计时问题，发生了 SL_RESULT_BUFFER_INSUFFICIENT 错误。第二个线程在第一个线程完成之前开始。第三个线程在前两个线程进行时启动。这无法处理，因此它引发了错误。时间增加到足以完成第一个线程，问题已解决。