Audio Queue 如何停止当前播放任务并立即开始播放另一个 AudioQueueBuffer？

Question

需要：我有一个音频队列和两个 AudioQueueBuffer。我怎么玩 NO.2 AudioQueueBuffer 立即在 NO.1 AudioQueueBuffer 比赛中。我试过 AudioQueueStop 或 AudioQueueReset。处理时间很长，NO.2AudioQueueBuffer玩的太晚了。

-(void)playBuffer:(AudioBuffer *)buffer format:(const AudioStreamBasicDescription *)format
{
    AudioQueueStop(_audioQueue, YES);//this line consuming too much time
    AudioQueueDispose(_audioQueue, YES);
    AudioQueueRef newAudioQueue;
    AudioQueueBufferRef queueBuffer;
    AudioQueueNewOutput(format, audioQueueOutputCallback, (__bridge void*)self,
                        nil, nil, 0, &newAudioQueue);
    OSStatus status;
    status = AudioQueueAllocateBuffer(newAudioQueue, buffer->mDataByteSize, &queueBuffer);

    memcpy(queueBuffer->mAudioData, buffer->mData, buffer->mDataByteSize);
    queueBuffer->mAudioDataByteSize=buffer->mDataByteSize;
    status = AudioQueueEnqueueBuffer(newAudioQueue, queueBuffer, 0, NULL);

    Float32 gain=1.0;
    AudioQueueSetParameter(newAudioQueue, kAudioQueueParam_Volume, gain);
    AudioQueueStart(newAudioQueue, nil);
    AudioQueueFreeBuffer(newAudioQueue, queueBuffer);
    _audioQueue = newAudioQueue;
}

所以我的问题 is:Is 可以 audio queue 立即播放下一个音频缓冲区吗？或者 audio queue 不匹配此任务我需要一个替代方案吗？

Answer 1

最后我只是异步处理 audioQueue。但我认为 AVAudioUint 对于我的情况来说可能是更好的解决方案。

- (void)playBuffer:(AudioBuffer *)buffer format:(const AudioStreamBasicDescription *)format
{
    oldAudioQueue = _audioQueue;
    if (oldAudioQueue){
        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
            AudioQueuePause(oldAudioQueue);
            //AudioQueueStop(oldAudioQueue, YES);//this line consuming too much time, will barries thread
            AudioQueueDispose(oldAudioQueue, YES);
            oldAudioQueue = nil;
        });
    }

    AudioQueueRef newAudioQueue;
    AudioQueueBufferRef queueBuffer;
    AudioQueueNewOutput(format, audioQueueOutputCallback, (__bridge void*)self,
                        nil, nil, 0, &newAudioQueue);

    OSStatus status;
    status = AudioQueueAllocateBuffer(newAudioQueue, buffer->mDataByteSize, &queueBuffer);

    memcpy(queueBuffer->mAudioData, buffer->mData, buffer->mDataByteSize);
    queueBuffer->mAudioDataByteSize=buffer->mDataByteSize;
    status = AudioQueueEnqueueBuffer(newAudioQueue, queueBuffer, 0, NULL);

    Float32 gain=1.0;
    AudioQueueSetParameter(newAudioQueue, kAudioQueueParam_Volume, gain);
    AudioQueueStart(newAudioQueue, nil);
    AudioQueueFreeBuffer(newAudioQueue, queueBuffer);
    _audioQueue = newAudioQueue;
}

Audio Queue 如何停止当前播放任务并立即开始播放另一个 AudioQueueBuffer？

How Audio Queue stop current playing task and start play another AudioQueueBuffer immediately?

audio

audioqueueservices

audioqueue

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