在Mix_ChannelFinished回调函数中未正确调用Mix_SetPanning

Question

我正在为当前项目使用SDL_Mixer，并且试图通过Mix_ChannelFinished函数同步声音。似乎可以让我调用Mix_PlayChannel，但不能让我在函数中调用Mix_SetPanning。这导致排队的音频声音更大。我在函数外部调用它确实有帮助，但是在排队的音频开始处有明显的响度差距。

这是声音结束后我调用的函数：

void playQueueSound(int channel)
{
    printf("\n playing %d", channels[channel].soundIndex);
    if (channels[channel].soundIndex > (-1))
    {
        //printf("\n playing %d", channels[channel].soundIndex);
        AudioSource::getSource(channels[channel].objId)->removeSound(channel);
        channels[channel].soundIndex = (-1);
        if (channels[channel].queueIndex > (-1))
        {   
            if (Mix_PlayChannel(channel, soundEffects[channels[channel].queueIndex].chunk, channels[channel].queueLoopMode)<0)
            {
                printf("\n cant play %s", Mix_GetError());
            }
            setObjPanning(AudioSource::getSource(channels[channel].objId), channel);
            channels[channel].soundIndex = channels[channel].queueIndex;
        }
        else
        {
            channels[channel].objId = -1;
        }
        channels[channel].queueIndex = -1;
        channels[channel].queueLoopMode = 0;
    }
}