/*
        channels.conf parser
        an implementation for the High Level Common Interface

        Copyright (C) 2004, 2005 Manu Abraham (manu@kromtek.com)

        This program is free software; you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation; either version 2 of the License, or
        (at your option) any later version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program; if not, write to the Free Software
        Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __CHANNELS_H__
#define __CHANNELS_H__ 1

#include <linux/dvb/frontend.h>

#define POLARIZATION_H 0
#define POLARIZATION_V 1

struct source_params {
  char* source_id;
  fe_type_t fe_type;

  struct source_params* next; /* NULL=> last entry */
};

struct diseqc_params {
  char* source_id;

  unsigned long slof;
  int polarization;
  unsigned long lof;

  char* command;

  struct diseqc_params* next; /* NULL=> last entry */
};

struct channel_params {
  char* channel_name;

  struct dvb_frontend_parameters fe_params;

  char* provider_name;
  char* source_id;
  uint32_t video_pid;
  uint32_t audio_pid;
  uint32_t service_id;

  struct channel_params* next; /* NULL=> last entry */
};

extern struct source_params* dvb_sources;
extern struct diseqc_params* dvb_diseqcs;
extern struct channel_params* dvb_channels;

/**
 * Load a DVB configuration file into memory. This can be called multiple
 * times to load several DVB configuration files.
 *
 * @param config_file Configuration file to load (type will be autodetected).
 * @return 0 on success, other code on error.
 */
extern int load_dvb_config(char* config_file);

/**
 * Free all loaded dvb configuration information.
 */
extern void free_dvb_config();

/**
 * Find channel parameters.
 *
 * @param first Starting channel_params structure, or NULL to search from the start.
 * @param name Name of channel.
 * @param fe_type Frontend type.
 * @return The channel parameters structure, or NULL if not found.
 */
extern struct channel_params* find_dvb_channel(struct channel_params* first, char* name, fe_type_t fe_type);

/**
 * Find diseqc parameters for a channel.
 *
 * @param first Starting diseqc_params structure, or NULL to search from the start.
 * @param channel The channel to look for.
 * @return The diseqc parameters structure, or NULL if none found for that diseqc.
 */
extern struct diseqc_params* find_dvb_diseqc(struct diseqc_params* first, struct channel_params* channel);

/**
 * Find source for a channel
 *
 * @param first Starting sources_params structure, or NULL to search from the start.
 * @param source_id The source to look for.
 * @param fe_type Frontend type of the source.
 * @return The source parameters structure, or NULL if none found for that source.
 */
extern struct sources_params* find_source(struct sources_params* first, char* source_id, fe_type_t fe_type);

#endif