forked from Minki/linux
dd79d27e1b
There is a provision at the dvb_demux.c to use a vmalloc'ed circular buffer, enabled via an extra #ifdef option that it is not at Kconfig. Enabling it will only make the Kernel to allocate/deallocate such buffer, but no code would actually use it. So, no practical effect, except for sparing some memory without any good reason. So, get rid of such dead code. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
150 lines
3.7 KiB
C
150 lines
3.7 KiB
C
/*
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* dvb_demux.h: DVB kernel demux API
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*
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* Copyright (C) 2000-2001 Marcus Metzler & Ralph Metzler
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* for convergence integrated media GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef _DVB_DEMUX_H_
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#define _DVB_DEMUX_H_
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#include <linux/time.h>
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#include <linux/timer.h>
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include "demux.h"
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#define DMX_TYPE_TS 0
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#define DMX_TYPE_SEC 1
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#define DMX_TYPE_PES 2
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#define DMX_STATE_FREE 0
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#define DMX_STATE_ALLOCATED 1
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#define DMX_STATE_SET 2
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#define DMX_STATE_READY 3
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#define DMX_STATE_GO 4
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#define DVB_DEMUX_MASK_MAX 18
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#define MAX_PID 0x1fff
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#define SPEED_PKTS_INTERVAL 50000
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struct dvb_demux_filter {
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struct dmx_section_filter filter;
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u8 maskandmode[DMX_MAX_FILTER_SIZE];
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u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
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int doneq;
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struct dvb_demux_filter *next;
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struct dvb_demux_feed *feed;
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int index;
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int state;
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int type;
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u16 hw_handle;
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struct timer_list timer;
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};
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#define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)
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struct dvb_demux_feed {
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union {
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struct dmx_ts_feed ts;
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struct dmx_section_feed sec;
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} feed;
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union {
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dmx_ts_cb ts;
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dmx_section_cb sec;
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} cb;
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struct dvb_demux *demux;
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void *priv;
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int type;
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int state;
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u16 pid;
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ktime_t timeout;
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struct dvb_demux_filter *filter;
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int ts_type;
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enum dmx_ts_pes pes_type;
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int cc;
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int pusi_seen; /* prevents feeding of garbage from previous section */
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u16 peslen;
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struct list_head list_head;
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unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */
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};
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struct dvb_demux {
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struct dmx_demux dmx;
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void *priv;
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int filternum;
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int feednum;
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int (*start_feed)(struct dvb_demux_feed *feed);
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int (*stop_feed)(struct dvb_demux_feed *feed);
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int (*write_to_decoder)(struct dvb_demux_feed *feed,
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const u8 *buf, size_t len);
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u32 (*check_crc32)(struct dvb_demux_feed *feed,
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const u8 *buf, size_t len);
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void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst,
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const u8 *src, size_t len);
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int users;
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#define MAX_DVB_DEMUX_USERS 10
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struct dvb_demux_filter *filter;
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struct dvb_demux_feed *feed;
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struct list_head frontend_list;
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struct dvb_demux_feed *pesfilter[DMX_PES_OTHER];
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u16 pids[DMX_PES_OTHER];
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int playing;
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int recording;
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#define DMX_MAX_PID 0x2000
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struct list_head feed_list;
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u8 tsbuf[204];
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int tsbufp;
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struct mutex mutex;
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spinlock_t lock;
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uint8_t *cnt_storage; /* for TS continuity check */
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ktime_t speed_last_time; /* for TS speed check */
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uint32_t speed_pkts_cnt; /* for TS speed check */
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};
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int dvb_dmx_init(struct dvb_demux *dvbdemux);
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void dvb_dmx_release(struct dvb_demux *dvbdemux);
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void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf,
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size_t count);
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void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
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void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf,
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size_t count);
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void dvb_dmx_swfilter_raw(struct dvb_demux *demux, const u8 *buf,
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size_t count);
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#endif /* _DVB_DEMUX_H_ */
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