可以认为上层应用是通过名称标识name来遍历底层的snd_kcontrol链表，从而找到相匹配的kcontrol。见snd_ctl_find_id函数[code]/** * snd_ctl_find_id - find the control instance with the given id * @card: the card instance * @id: the id to search * * Finds the control instance with the given id from the card. * * Returns the pointer of the instance if found, or NULL if not. * * The caller must down ...

by sep - 移动操作系统 - 2011-02-24 13:08:47 阅读（5002） 回复（4）