[移动开发]AudioFlinger播放选择(四十四)

1.frameworks/av/media/libmediaplayerservice/MediaPlayerService.cpp

<1>.void MediaPlayerService::instantiate() {
    defaultServiceManager()->addService(String16("media.player"), new MediaPlayerService());
}

<2>.status_t MediaPlayerService::AudioOutput::open(
        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
        audio_format_t format, int bufferCount,
        AudioCallback cb, void *cookie,
        audio_output_flags_t flags,
        const audio_offload_info_t *offloadInfo,
        bool doNotReconnect,
        uint32_t suggestedFrameCount)
{
              t = new AudioTrack(
                    mStreamType,
                    sampleRate,
                    format,
                    channelMask,
                    frameCount,
                    flags,
                    CallbackWrapper,
                    newcbd,
                    0,  // notification frames
                    mSess

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