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/* dvbloop - A DVB Loopback Device
* Copyright (C) 2006 Christian Praehauser, Deti Fliegl
-----------------------------------------
* File: dvblo_adap.h
* Desc: Support for virtual DVB adapters
* Date: October 2006
* Author: Christian Praehauser <cpreahaus@cosy.sbg.ac.at>, Deti Fliegl <deti@fliegl.de>
*
* This file is released under the GPLv2.
*/
#ifndef _DVBLO_ADAP_H_
#define _DVBLO_ADAP_H_
#include <linux/types.h>
#include "dvb-core/dvbdev.h"
#include "dvb-core/dvb_demux.h"
#include "dvb-core/dmxdev.h"
#include "dvb-core/dvb_net.h"
#include "dvb-core/dvb_frontend.h"
#include <linux/dvb/ca.h>
#include "dvblo_ioctl.h"
struct dvblo_adap_statistics
{
/// Number of TS packets received on the adapter
unsigned long ts_count;
};
/**
* Structure that represents a virtual DVB adapter instance
* @todo rename this to dvblo_adap
*/
struct dvblo
{
/**
* Level of initialization
* This help dvblo_destroy() to determine which things have to be
* cleaned/unregistered as it is used by dvblo_init() when an error occurs
*/
unsigned int initlev:8;
/// Flag that is set to 1 if this dvblo structure is completely initialized
unsigned int initdone:1;
/// The name of this adapter, e.g. "dvblo_adap0"
char name[16];
struct
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
/* Since kernel version 2.6.12 the dvb_adapter structure has to be
* embedded into our structure
*/
struct dvb_adapter adap;
#define DVBLO_DVB_ADAP(dvblop) (&(dvblop)->dvb.adap)
#else /* */
struct dvb_adapter *adap;
#define DVBLO_DVB_ADAP(dvblop) ((dvblop)->dvb.adap)
#endif /* */
struct dvb_device *ca_dev;
struct dmxdev dmxdev;
struct dvb_demux demux;
struct dvb_net net;
struct dvb_frontend frontend;
/* struct dvb_frontend: tuner_priv was added in 2.6.18 */
#define FE_PRIV(fep) ((fep)->demodulator_priv)
#define DVBLO_DVB_ADAP_FEPRIV(dvblop) FE_PRIV(&((dvblop)->dvb.frontend))
struct dmx_frontend hw_frontend;
struct dmx_frontend mem_frontend;
} dvb;
/// count, how many times dvblo_demux_start_feed() has been called
int feeding;
struct semaphore sem;
spinlock_t event_lock;
wait_queue_head_t event_queue;
unsigned int event;
struct dvblo_adap_statistics stats;
struct
{
struct dvb_frontend_parameters params;
struct
{
struct dvb_frontend_parameters params;
u32 status;
} tuner;
dvblo_sec_t sec;
dvblo_festatus_t status;
} fe;
struct dvb_ringbuffer ci_rbuffer;
struct dvb_ringbuffer ci_wbuffer;
dvblo_cacaps_t ca;
dvblo_private_t private;
};
/**
* Adapter configuration paramters
*/
struct dvblo_adap_config
{
/// Whether a MAC address is specified by this structure
unsigned int mac_valid:1;
/// The MAC address of the DVB adapter (if mac_valid == 1)
u8 mac[6];
};
/**
* Creates a new virtual DVB adapter
* @param adapnum The desired adapter number (set to -1 for automatic assignment)
* @param cfg Adapter configuration (may be NULL)
* @param dvblo_out A pointer to the newly allocated DVB adapter context is
* returned via this parameter
*/
int dvblo_adap_create (int adapnum, struct dvblo_adap_config *cfg, struct dvblo **dvblo_out);
/**
* Destroys a virtual DVB adapter
*/
int dvblo_adap_destroy (struct dvblo *dvblo);
/**
* Deliver TS packets to the virtual DVB adapter
* @param dvblo The dvblo adapter context
* @param buf Pointer to buffer containing TS packets
* @param len Length of buf in bytes
*/
ssize_t dvblo_adap_deliver_packets (struct dvblo *dvblo, const u8 * buf, size_t len);
/**
* Handle event bitpattern without race conditions
*/
unsigned int dvblo_set_event (struct dvblo *dvblo, unsigned int event);
/**
* Get list of currently active PIDs from DVB adapter
*/
int dvblog_adap_get_pids (struct dvblo *dvblo, dvblo_pids_t * pids_out);
/**
* Get MAC address of virtual DVB adapter
*/
int dvblo_adap_get_mac (struct dvblo *dvblo, u8 * mac_out);
#endif /* _DVBLO_ADAP_H_ */
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