使用震动喇叭，在home界面通过音量键调音量，结果调的是媒体音量而不是来电铃声的音量

[DESCRIPTION]
问题：使用震动喇叭，打开mtk_VIBSPK_SUPPORT，通过音量键在home界面调节音量，经常出现按一下没有提示音的情况，观察音量图标，发现调的是media的音量等级，而不是ring的音量等级。进入setting，把震动关掉，此问题就不再复现。只要是在震动的时候去home见面调音量键，就可以必现这个问题。
[SOLUTION]
原因：这是因为震动的时候会播放一个silence，stream type用的是music，当在home界面调音量的时候，会去底层get stream type，如果此时在震动，则会get到music的stream type，所以会变成调节的是media的音量等级。
解法：请做以下修改(以下修改处以"AAAA"标识)：
1）修改/alps/system/core/include/system/audio.h
/* Audio stream types */
typedef enum {
    AUDIO_STREAM_DEFAULT          = -1,
    AUDIO_STREAM_VOICE_CALL       = 0,
    AUDIO_STREAM_SYSTEM           = 1,
    AUDIO_STREAM_RING             = 2,
    AUDIO_STREAM_MUSIC            = 3,
    AUDIO_STREAM_ALARM            = 4,
    AUDIO_STREAM_NOTIFICATION     = 5,
    AUDIO_STREAM_bluetooth_SCO    = 6,
    AUDIO_STREAM_ENFORCED_AUDIBLE = 7, /* Sounds that cannot be muted by user and must be routed to speaker */
    AUDIO_STREAM_DTMF             = 8,
    AUDIO_STREAM_TTS              = 9,
//#ifdef MTK_AUDIO
    AUDIO_STREAM_FM               = 10,
    AUDIO_STREAM_MATV             = 11,
    AUDIO_STREAM_BOOT             = 12, //only used for bootanimation and output fROM speaker and heADSet
    AUDIO_STREAM_VIBSPK           = 13,//AAAA，此处新增一个这种streamtype
//#endif
    AUDIO_STREAM_CNT,
    AUDIO_STREAM_MAX              = AUDIO_STREAM_CNT - 1,
} audio_stream_type_t;
2）修改/alps/hardware/libhardware_legacy/include/hardware_legacy/AudioSystemLegacy.h
class AudioSystem {
public:
#if 1
    enum stream_type {
        DEFAULT          =-1,
        VOICE_CALL       = 0,
        SYSTEM           = 1,
        RING             = 2,
        MUSIC            = 3,
        ALARM            = 4,
        NOTIFICATION     = 5,
        BLUETOOTH_SCO    = 6,
        ENFORCED_AUDIBLE = 7, // Sounds that cannot be muted by user and must be routed to speaker
        DTMF             = 8,
        TTS              = 9,
//#ifndef android_DEFAULT_CODE
#if 1
        FM                = 10,
        MATV            = 11,
        BOOT            = 12, //only used for bootanimation and output from speakerand headset
        VIBSPK           = 13,//AAAA，此处新增一个这种streamtype
#endif
        NUM_STREAM_TYPES
    };
3）修改/alps/mediatek/platform/common/hardware/audio/AudioMTKPolicyManager.cpp
AudioMTKPolicyManager::routing_strategy AudioMTKPolicyManager::getStrategy(
        AudioSystem::stream_type stream) {
    // stream to strategy mapping
    switch (stream) {
    case AudioSystem::VOICE_CALL:
    case AudioSystem::BLUETOOTH_SCO:
        return STRATEGY_PHONE;
    case AudioSystem::RING:
    case AudioSystem::ALARM:
        return STRATEGY_SONIFICATION;
    case AudioSystem::NOTIFICATION:
        return STRATEGY_SONIFICATION_RESPECTFUL;
    case AudioSystem::DTMF:
        return STRATEGY_DTMF;
#ifdef MTK_AUDIO
    // FM and MATV strategy
    case AudioSystem::FM:
#ifdef FM_ANALOG_IN_SUPPORT
        return STRATEGY_PROPRIETARY_ANLG; #else
        return STRATEGY_PROPRIETARY_DGTL; #endif
    case AudioSystem::MATV:
#ifdef MATV_AUDIO_SUPPORT
    if( matv_use_analog_input == 1)
        return STRATEGY_PROPRIETARY_ANLG_V2;
    else
        return STRATEGY_PROPRIETARY_DGTL_V2; #endif
#endif //#ifndef ANDROID_DEFAULT_CODE
    default:
        //ALOGE("unknown stream type");
    case AudioSystem::SYSTEM:
        // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs
        // while key CLIcks are played produces a poor result
    case AudioSystem::TTS:
    case AudioSystem::MUSIC:
#ifdef MTK_AUDIO
    case AudioSystem::BOOT:
    case AudioSystem::VIBSPK: //AAAA，添加此处
#endif
        return STRATEGY_MEDIA;
    case AudioSystem::ENFORCED_AUDIBLE:
        return STRATEGY_ENFORCED_AUDIBLE;
     }
}
const AudioMTKPolicyManager::VolumeCurvePoint
            *AudioMTKPolicyManager::sVolumeProfiles[AUDIO_STREAM_CNT]
                                                   [AudioMTKPolicyManager::DEVICE_CATEGORY_CNT] = {
。
    {
        // AUDIO_STREAM_ATV
        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
    },
    {
        // AUDIO_STREAM_BOOT
        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
    },
    {//AAAA，添加以下
        // AUDIO_STREAM_VIBSPK
        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
    }//AAAA，添加以上
#endif
};
4）
修改/alps/mediatek/platform/common/hardware/audio/AudioPolicyManagerBase.cpp
修改/alps/hardware/libhardware_legacy/audio/AudioPolicyManagerBase.cpp
const AudioPolicyManagerBase::VolumeCurvePoint
*AudioPolicyManagerBase::sVolumeProfiles[AUDIO_STREAM_CNT]
[AudioPolicyManagerBase::DEVICE_CATEGORY_CNT] = {
。
    {
        // AUDIO_STREAM_ATV
        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
    },
    {
        // AUDIO_STREAM_BOOT
        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
    },
    { // AUDIO_STREAM_VIBSPK //AAAA，添加以下
        sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
        sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
        sDefaultMediaVolumeCurve  // DEVICE_CATEGORY_EARPIECE
    },//AAAA，添加以上
};
5）修改/alps/mediatek/protect-bsp/php?mod=tag&id=6090" target="_blank" class="relatedlink">Frameworks/av/media/liBMTkplayer/VibSpkAudioPlayer.cpp
VibSpkAudioPlayer *VibSpkAudioPlayer::getInstance() {
    if(VibSpkAudioPlayerInstance == NULL)
    {
        SXLOGD("GetInstance, Constructor\n");
        VibSpkAudioPlayerInstance = new VibSpkAudioPlayer(AUDIO_STREAM_VIBSPK, 0, false);//AAAA，修改此处
        //VibSpkAudioPlayerInstance = new VibSpkAudioPlayer(AUDIO_STREAM_NOTIFICATION, 0, false);
        SXLOGD("GetInstance, Constructor done\n");
    }
    return VibSpkAudioPlayerInstance;
   
}
如果以上修改OK的话，请申请patch：ALPS00845976