/* 
 * dmxdev.h
 *
 * Copyright (C) 2000 Ralph  Metzler <ralph@convergence.de>
 *                  & Marcus Metzler <marcus@convergence.de>
                      for convergence integrated media GmbH
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * 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 Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef _DMXDEV_H_
#define _DMXDEV_H_

#ifndef __KERNEL__ 
#define __KERNEL__ 
#endif 

#ifdef __DVB_PACK__
#include <ost/demux.h>
#include <ost/dmx.h>
#else
#include <linux/ost/demux.h>
#include <linux/ost/dmx.h>
#endif
#include <linux/version.h>
#include <linux/wait.h>
#include <linux/types.h>
#include <linux/fs.h>

#if LINUX_VERSION_CODE < 0x020300
#define WAIT_QUEUE                 struct wait_queue*
#define init_waitqueue_head(wq)    *(wq) = NULL;
#define DECLARE_WAITQUEUE(wait, current) struct wait_queue wait = { current, NULL }
#define list_for_each(pos, head) \
	for (pos = (head)->next; pos != (head); pos = pos->next)
#else
#define WAIT_QUEUE                 wait_queue_head_t
#endif

#define DMXDEV_TYPE_SEC 1
#define DMXDEV_TYPE_PES 2

#define DMXDEV_STATE_FREE      0
#define DMXDEV_STATE_ALLOCATED 1
#define DMXDEV_STATE_SET       2
#define DMXDEV_STATE_READY     3
#define DMXDEV_STATE_GO        4

typedef struct dmxdev_buffer_s {
        uint8_t *data;
        uint32_t size;
        int32_t  pread;
        int32_t  pwrite;
	WAIT_QUEUE queue;
        int error;
} dmxdev_buffer_t;


typedef struct dmxdev_filter_s {
        union {
	        dmx_pes_filter_t *pes;
	        dmx_section_filter_t *sec;
	} filter;

        union {
                dmx_ts_feed_t *ts;
                dmx_section_feed_t *sec;
	} feed;

        union {
	        struct dmxSctFilterParams sec;
	        struct dmxPesFilterParams pes;
	} params;

        int type;
        int state;
        struct dmxdev_s *dev;
        dmxdev_buffer_t buffer;

        // only for sections
        struct timer_list timer;
        int todo;
        uint8_t secheader[3];

        u16 pid;
} dmxdev_filter_t;


typedef struct dmxdev_s {
        dmxdev_filter_t *filter;
        dmx_demux_t *demux;

        int filternum;
        int capabilities;
#define DMXDEV_CAP_DUPLEX 1
        dmx_frontend_t *dvr_orig_fe;

        // if we support duplex mode (we don't :-), we need these
        dmx_demux_t *sw_demux;
        struct file *read_file; 
        struct file *write_file;

        //DVR
        dmxdev_buffer_t dvr_buffer;
#define DVR_BUFFER_SIZE (256*1024)
	struct semaphore mutex;
	spinlock_t lock;
} dmxdev_t;


int DmxDevInit(dmxdev_t *dmxdev);
void DmxDevRelease(dmxdev_t *dmxdev);

int DmxDevFilterAlloc(dmxdev_t *dmxdev, struct file *file);
int DmxDevFilterFree(dmxdev_t *dmxdev, struct file *file);
int DmxDevIoctl(dmxdev_t *dmxdev, struct file *file, 
		unsigned int cmd, unsigned long arg);
unsigned int DmxDevPoll(dmxdev_t *dmxdev, struct file *file, poll_table * wait);
ssize_t DmxDevRead(dmxdev_t *dmxdev, struct file *file, 
		   char *buf, size_t count, loff_t *ppos);

int DmxDevDVROpen(dmxdev_t *dmxdev, struct file *file);
int DmxDevDVRClose(dmxdev_t *dmxdev, struct file *file);
ssize_t DmxDevDVRWrite(dmxdev_t *dmxdev, struct file *file, 
		       const char *buf, size_t count, loff_t *ppos);
ssize_t DmxDevDVRRead(dmxdev_t *dmxdev, struct file *file, 
		      char *buf, size_t count, loff_t *ppos);


#endif /* _DMXDEV_H_ */