AVDT_SetMediaBuf() function

* Function AVDT_SetMediaBuf * Description Assigns buffer for media packets or forbids using of assigned * buffer if argument p_buf is NULL. This function can only * be called if the stream is a SNK. * AVDTP uses this buffer to reassemble fragmented media packets. * When AVDTP receives a complete media packet, it calls the * p_media_cback assigned by AVDT_CreateStream(). * This function can be called during callback to assign a * different buffer for next media packet or can leave the current * buffer for next packet. * Returns AVDT_SUCCESS if successful, otherwise error.