AudioChannelMask

export enum AudioChannelMask {
    CHANNEL_NONE,
    CHANNEL_INVALID,
    CHANNEL_BIT_MAX,

    /* 单个通道位的起始位置 *\/
    CHANNEL_FRONT_LEFT,
    CHANNEL_FRONT_RIGHT,
    CHANNEL_FRONT_CENTER,
    CHANNEL_LOW_FREQUENCY,
    CHANNEL_BACK_LEFT,
    CHANNEL_BACK_RIGHT,
    CHANNEL_BACK_CENTER,
    CHANNEL_SIDE_LEFT,
    CHANNEL_SIDE_RIGHT,
    CHANNEL_TOP_CENTER,
    CHANNEL_TOP_FRONT_LEFT,
    CHANNEL_TOP_FRONT_RIGHT,
    CHANNEL_TOP_FRONT_CENTER,
    CHANNEL_TOP_BACK_LEFT,
    CHANNEL_TOP_BACK_RIGHT,
    CHANNEL_TOP_BACK_CENTER,
    CHANNEL_TOP_SIDE_LEFT,
    CHANNEL_TOP_SIDE_RIGHT,

    /**
     * 频道掩码的起始位置，频道的位置固定不变，以每个条目的呈现顺序为准。
     * 客户端应始终按指定顺序发送音频。否则，频道路由
     * 可能会变得不正确。
     *\/
    CHANNEL_MONO,
    CHANNEL_STEREO,
    CHANNEL_3POINT1POINT1,
    CHANNEL_QUAD,
    CHANNEL_5POINT1,
    CHANNEL_5POINT1_SIDE,
    CHANNEL_5POINT1POINT2,
    CHANNEL_5POINT1POINT2_SIDE,
    CHANNEL_5POINT1POINT4,
    CHANNEL_5POINT1POINT4_SIDE,
    CHANNEL_7POINT1,
    CHANNEL_7POINT1POINT2,
    CHANNEL_7POINT1POINT4,
    CHANNEL_ALL
};