diff options
Diffstat (limited to 'drivers/media/dvb-core/dvb_demux.h')
| -rw-r--r-- | drivers/media/dvb-core/dvb_demux.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/drivers/media/dvb-core/dvb_demux.h b/drivers/media/dvb-core/dvb_demux.h new file mode 100644 index 000000000000..fa7188a253aa --- /dev/null +++ b/drivers/media/dvb-core/dvb_demux.h @@ -0,0 +1,151 @@ +/* + * 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. + * + * 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 _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" + +#define DMX_TYPE_TS 0 +#define DMX_TYPE_SEC 1 +#define DMX_TYPE_PES 2 + +#define DMX_STATE_FREE 0 +#define DMX_STATE_ALLOCATED 1 +#define DMX_STATE_SET 2 +#define DMX_STATE_READY 3 +#define DMX_STATE_GO 4 + +#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]; + int doneq; + + struct dvb_demux_filter *next; + struct dvb_demux_feed *feed; + int index; + int state; + int type; + + u16 hw_handle; + struct timer_list timer; +}; + +#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; + int type; + int state; + u16 pid; + u8 *buffer; + int buffer_size; + + struct timespec timeout; + struct dvb_demux_filter *filter; + + int ts_type; + enum dmx_ts_pes pes_type; + + int cc; + int 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_TS_PES_OTHER]; + u16 pids[DMX_TS_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 */ + + struct timespec 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_ */ |