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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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