?? dvb-dibusb-pid.c
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/* * dvb-dibusb-pid.c is part of the driver for mobile USB Budget DVB-T devices * based on reference design made by DiBcom (http://www.dibcom.fr/) * * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de) * * see dvb-dibusb-core.c for more copyright details. * * This file contains functions for initializing and handling the internal * pid-list. This pid-list mirrors the information currently stored in the * devices pid-list. */#include "dvb-dibusb.h"int dibusb_pid_list_init(struct usb_dibusb *dib){ int i; dib->pid_list = kmalloc(sizeof(struct dibusb_pid) * dib->dibdev->dev_cl->demod->pid_filter_count,GFP_KERNEL); if (dib->pid_list == NULL) return -ENOMEM; deb_xfer("initializing %d pids for the pid_list.\n",dib->dibdev->dev_cl->demod->pid_filter_count); dib->pid_list_lock = SPIN_LOCK_UNLOCKED; memset(dib->pid_list,0,dib->dibdev->dev_cl->demod->pid_filter_count*(sizeof(struct dibusb_pid))); for (i=0; i < dib->dibdev->dev_cl->demod->pid_filter_count; i++) { dib->pid_list[i].index = i; dib->pid_list[i].pid = 0; dib->pid_list[i].active = 0; } dib->init_state |= DIBUSB_STATE_PIDLIST; return 0;}void dibusb_pid_list_exit(struct usb_dibusb *dib){ if (dib->init_state & DIBUSB_STATE_PIDLIST) kfree(dib->pid_list); dib->init_state &= ~DIBUSB_STATE_PIDLIST;}/* fetch a pid from pid_list and set it on or off */int dibusb_ctrl_pid(struct usb_dibusb *dib, struct dvb_demux_feed *dvbdmxfeed , int onoff){ int i,ret = -1; unsigned long flags; u16 pid = dvbdmxfeed->pid; if (onoff) { spin_lock_irqsave(&dib->pid_list_lock,flags); for (i=0; i < dib->dibdev->dev_cl->demod->pid_filter_count; i++) if (!dib->pid_list[i].active) { dib->pid_list[i].pid = pid; dib->pid_list[i].active = 1; ret = i; break; } dvbdmxfeed->priv = &dib->pid_list[ret]; spin_unlock_irqrestore(&dib->pid_list_lock,flags); if (dib->xfer_ops.pid_ctrl != NULL) dib->xfer_ops.pid_ctrl(dib->fe,dib->pid_list[ret].index,dib->pid_list[ret].pid,1); } else { struct dibusb_pid *dpid = dvbdmxfeed->priv; if (dib->xfer_ops.pid_ctrl != NULL) dib->xfer_ops.pid_ctrl(dib->fe,dpid->index,0,0); dpid->pid = 0; dpid->active = 0; ret = dpid->index; } /* a free pid from the list */ deb_info("setting pid: %5d %04x at index %d '%s'\n",pid,pid,ret,onoff ? "on" : "off"); return ret;}
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