MediaPlayerNative: message received msg=100, ext1=1, ext2=-2147483648

mediaplayer.h  msg=100的定義如下

enum media_event_type {
    MEDIA_NOP               = 0, // interface test message
    MEDIA_PREPARED          = 1,
    MEDIA_PLAYBACK_COMPLETE = 2,
    MEDIA_BUFFERING_UPDATE  = 3,
    MEDIA_SEEK_COMPLETE     = 4,
    MEDIA_SET_VIDEO_SIZE    = 5,
    MEDIA_STARTED           = 6,
    MEDIA_PAUSED            = 7,
    MEDIA_STOPPED           = 8,
    MEDIA_SKIPPED           = 9,
    MEDIA_TIMED_TEXT        = 99,
    MEDIA_ERROR             = 100,
    MEDIA_INFO              = 200,
    MEDIA_SUBTITLE_DATA     = 201,
    MEDIA_META_DATA         = 202,

    //RTK proprietary event types
    MEDIA_SPEED_CHANGE      = 20151010,
    MEDIA_SEEK_RESULT       = 20151011,
};

mediaplayer.cpp可以看到
case MEDIA_ERROR:
        // Always log errors.
        // ext1: Media framework error code.
        // ext2: Implementation dependant error code.
        ALOGE("error (%d, %d)", ext1, ext2);
        mCurrentState = MEDIA_PLAYER_STATE_ERROR;
        if (mPrepareSync)
        {
            ALOGV("signal application thread");
            mPrepareSync = false;
            mPrepareStatus = ext1;
            mSignal.signal();
            send = false;
        }
        break;

ext1=1則在mediaplayer.h

enum media_error_type {
    // 0xx
    MEDIA_ERROR_UNKNOWN = 1,
    // 1xx
    MEDIA_ERROR_SERVER_DIED = 100,
    // 2xx
    MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK = 200,
    // 3xx

    // <--- RTK ---
    // -1xxx
    /* File or network related operation errors. */
    MEDIA_ERROR_IO = -1004,
    /* Bitstream is not conforming to the related coding standard or file spec. */
    MEDIA_ERROR_MALFORMED = -1007,
    /* Bitstream is conforming to the related coding standard or file spec, but the media framework does not support the feature. */
    MEDIA_ERROR_UNSUPPORTED = -1010,
    /** Some operation takes too long to complete, usually more than 3-5 seconds. */
    MEDIA_ERROR_TIMED_OUT = -110,

    /* Video size exceed limitation */
    MEDIA_ERROR_VIDEO_SIZE_EXCEED_LIMITATION = -1000,
    /* Bitstream is not conforming to the related coding standard or file spec. */
    MEDIA_ERROR_BITSTREAM_ERROR = -1001,
    /* Fatal error with eror code */
    MEDIA_ERROR_FATAL = -1002,
    // --- RTK --- >
};