iphone - AudioQueueFreeBuffer 警告

Question

我收到 API AudioQueueFreeBuffer 的警告“AudioQueueObject::FreeBuffer: AQBuffer * 0x6273fd0 的入队计数为 1”...如何避免此警告？

我在 AudioQueueFreeBuffer API 中收到此警告

        for (int i = 0; i < kNumberBuffers; ++i) {

            if(mAudioInfo.mBuffers[i] != NULL)
            {
                AudioQueueFreeBuffer(mAudioInfo.mQueue, mAudioInfo.mBuffers[i]);
                mAudioInfo.mBuffers[i] = NULL;
            }   
            XThrowIfError(AudioQueueAllocateBuffer(mAudioInfo.mQueue, mBufferByteSize, &mAudioInfo.mBuffers[i]), "AudioQueueAllocateBuffer failed");

            AQTestBufferCallback (&mAudioInfo, mAudioInfo.mQueue, mAudioInfo.mBuffers[i]);

            if (mAudioInfo.mDone) break;
        }

Answer 1

当您尝试对已在正在运行的 AudioQueue 中排队的缓冲区调用 AudioQueueFreeBuffer() 时，会发生这种情况。在尝试释放缓冲区之前，您应该在关联的 AudioQueue 上调用 AudioQueueStop()。

The doc's for AudioQueueFreeBuffer() say:

Call this function only if you want to dispose of a particular buffer while continuing to use an audio queue. You can dispose of a buffer only when the audio queue that owns it is stopped (that is, not processing audio data).