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/*
* dvb_demux.h: DVB kernel demux API
*
* Copyright (C) 2000-2001 Marcus Metzler & Ralph Metzler
* 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.
*
*/
#ifndef _DVB_DEMUX_H_
#define _DVB_DEMUX_H_
#include <linux/time.h>
#include <linux/timer.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include "demux.h"
/**
* enum dvb_dmx_filter_type - type of demux feed.
*
* @DMX_TYPE_TS: feed is in TS mode.
* @DMX_TYPE_SEC: feed is in Section mode.
*/
enum dvb_dmx_filter_type {
DMX_TYPE_TS,
DMX_TYPE_SEC,
};
/**
* enum dvb_dmx_state - state machine for a demux filter.
*
* @DMX_STATE_FREE: indicates that the filter is freed.
* @DMX_STATE_ALLOCATED: indicates that the filter was allocated
* to be used.
* @DMX_STATE_READY: indicates that the filter is ready
* to be used.
* @DMX_STATE_GO: indicates that the filter is running.
*/
enum dvb_dmx_state {
DMX_STATE_FREE,
DMX_STATE_ALLOCATED,
DMX_STATE_READY,
DMX_STATE_GO,
};
#define DVB_DEMUX_MASK_MAX 18
#define MAX_PID 0x1fff
#define SPEED_PKTS_INTERVAL 50000
struct dvb_demux_filter {
struct dmx_section_filter filter;
u8 maskandmode[DMX_MAX_FILTER_SIZE];
u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
bool doneq;
struct dvb_demux_filter *next;
struct dvb_demux_feed *feed;
int index;
enum dvb_dmx_state state;
enum dvb_dmx_filter_type type;
u16 hw_handle;
};
#define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)
struct dvb_demux_feed {
union {
struct dmx_ts_feed ts;
struct dmx_section_feed sec;
} feed;
union {
dmx_ts_cb ts;
dmx_section_cb sec;
} cb;
struct dvb_demux *demux;
void *priv;
enum dvb_dmx_filter_type type;
enum dvb_dmx_state state;
u16 pid;
ktime_t timeout;
struct dvb_demux_filter *filter;
int ts_type;
enum dmx_ts_pes pes_type;
int cc;
bool pusi_seen; /* prevents feeding of garbage from previous section */
u16 peslen;
struct list_head list_head;
unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */
};
struct dvb_demux {
struct dmx_demux dmx;
void *priv;
int filternum;
int feednum;
int (*start_feed)(struct dvb_demux_feed *feed);
int (*stop_feed)(struct dvb_demux_feed *feed);
int (*write_to_decoder)(struct dvb_demux_feed *feed,
const u8 *buf, size_t len);
u32 (*check_crc32)(struct dvb_demux_feed *feed,
const u8 *buf, size_t len);
void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst,
const u8 *src, size_t len);
int users;
#define MAX_DVB_DEMUX_USERS 10
struct dvb_demux_filter *filter;
struct dvb_demux_feed *feed;
struct list_head frontend_list;
struct dvb_demux_feed *pesfilter[DMX_PES_OTHER];
u16 pids[DMX_PES_OTHER];
int playing;
int recording;
#define DMX_MAX_PID 0x2000
struct list_head feed_list;
u8 tsbuf[204];
int tsbufp;
struct mutex mutex;
spinlock_t lock;
uint8_t *cnt_storage; /* for TS continuity check */
ktime_t speed_last_time; /* for TS speed check */
uint32_t speed_pkts_cnt; /* for TS speed check */
};
int dvb_dmx_init(struct dvb_demux *dvbdemux);
void dvb_dmx_release(struct dvb_demux *dvbdemux);
void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf,
size_t count);
void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf,
size_t count);
void dvb_dmx_swfilter_raw(struct dvb_demux *demux, const u8 *buf,
size_t count);
#endif /* _DVB_DEMUX_H_ */
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