/* $NetBSD: dtvvar.h,v 1.6 2011/08/09 01:42:24 jmcneill Exp $ */

/*-
* Copyright (c) 2011 Jared D. McNeill <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*        This product includes software developed by Jared D. McNeill.
* 4. Neither the name of The NetBSD Foundation nor the names of its
*    contributors may be used to endorse or promote products derived
*    from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef _DEV_DTV_DTVVAR_H
#define _DEV_DTV_DTVVAR_H

#include <dev/dtv/dtvif.h>
#include <dev/dtv/dtv_scatter.h>

#define DTV_DEFAULT_BLOCKSIZE   (32 * PAGE_SIZE)
#define DTV_DEFAULT_BUFSIZE     (32 * DTV_DEFAULT_BLOCKSIZE)

#define TS_PKTLEN               188
#define TS_HAS_SYNC(_tspkt)     ((_tspkt)[0] == 0x47)
#define TS_HAS_PUSI(_tspkt)     ((_tspkt)[1] & 0x40)
#define TS_HAS_AF(_tspkt)       ((_tspkt)[3] & 0x20)
#define TS_HAS_PAYLOAD(_tspkt)  ((_tspkt)[3] & 0x10)
#define TS_PID(_tspkt)          ((((_tspkt)[1] & 0x1f) << 8) | (_tspkt)[2])
#define TS_SECTION_MAXLEN       4096

struct dtv_buffer {
       uint32_t        db_offset;
       uint32_t        db_bytesused;
       size_t          db_length;
       SIMPLEQ_ENTRY(dtv_buffer) db_entries;
};

SIMPLEQ_HEAD(dtv_sample_queue, dtv_buffer);

struct dtv_stream {
       unsigned int            ds_nbufs;
       struct dtv_buffer       **ds_buf;
       struct dtv_scatter_buf  ds_data;
       struct dtv_sample_queue ds_ingress, ds_egress;
       kmutex_t                ds_ingress_lock, ds_egress_lock;
       kcondvar_t              ds_sample_cv;
       struct selinfo          ds_sel;
       uint32_t                ds_bytesread;
};

typedef enum {
       DTV_DEMUX_MODE_NONE,
       DTV_DEMUX_MODE_SECTION,
       DTV_DEMUX_MODE_PES,
} dtv_demux_mode_t;

struct dtv_ts_section {
       uint8_t                 sec_buf[TS_SECTION_MAXLEN];
       uint16_t                sec_bytesused;
       uint16_t                sec_length;
};

struct dtv_demux {
       struct dtv_softc        *dd_sc;
       struct selinfo          dd_sel;
       kmutex_t                dd_lock;
       kcondvar_t              dd_section_cv;

       bool                    dd_running;

       dtv_demux_mode_t        dd_mode;
       struct {
               struct dmx_sct_filter_params    params;
               struct dtv_ts_section           section[16];
               unsigned int                    rp, wp;
               unsigned int                    nsections;
               bool                            overflow;
       } dd_secfilt;

       TAILQ_ENTRY(dtv_demux)  dd_entries;
};

struct dtv_ts {
       uint8_t                 ts_pidfilter[0x2000];
       kmutex_t                ts_lock;
};

struct dtv_softc {
       device_t        sc_dev;
       const struct dtv_hw_if *sc_hw;
       void            *sc_priv;

       bool            sc_dying;

       unsigned int    sc_open;
       kmutex_t        sc_lock;

       size_t          sc_bufsize;
       bool            sc_bufsize_chg;

       struct dtv_stream sc_stream;
       struct dtv_ts   sc_ts;

       TAILQ_HEAD(, dtv_demux) sc_demux_list;
       kmutex_t        sc_demux_lock;
       int             sc_demux_runcnt;
};

#define dtv_device_get_devinfo(sc, info)        \
       ((sc)->sc_hw->get_devinfo((sc)->sc_priv, (info)))
#define dtv_device_open(sc, flags)              \
       ((sc)->sc_hw->open((sc)->sc_priv, (flags)))
#define dtv_device_close(sc)                    \
       ((sc)->sc_hw->close((sc)->sc_priv))
#define dtv_device_set_tuner(sc, params)        \
       ((sc)->sc_hw->set_tuner((sc)->sc_priv, (params)))
#define dtv_device_get_status(sc)               \
       ((sc)->sc_hw->get_status((sc)->sc_priv))
#define dtv_device_get_signal_strength(sc)      \
       ((sc)->sc_hw->get_signal_strength((sc)->sc_priv))
#define dtv_device_get_snr(sc)                  \
       ((sc)->sc_hw->get_snr((sc)->sc_priv))
#define dtv_device_start_transfer(sc)   \
       ((sc)->sc_hw->start_transfer((sc)->sc_priv, dtv_buffer_submit, (sc)))
#define dtv_device_stop_transfer(sc)            \
       ((sc)->sc_hw->stop_transfer((sc)->sc_priv))

int     dtv_frontend_ioctl(struct dtv_softc *, u_long, void *, int);

int     dtv_demux_open(struct dtv_softc *, int, int, lwp_t *);
void    dtv_demux_write(struct dtv_softc *, const uint8_t *, size_t);

int     dtv_buffer_realloc(struct dtv_softc *, size_t);
int     dtv_buffer_setup(struct dtv_softc *);
int     dtv_buffer_destroy(struct dtv_softc *);
int     dtv_buffer_read(struct dtv_softc *, struct uio *, int);
int     dtv_buffer_poll(struct dtv_softc *, int, lwp_t *);
void    dtv_buffer_submit(void *, const struct dtv_payload *);

void    dtv_common_close(struct dtv_softc *);

#endif /* !_DEV_DTV_DTVVAR_H */

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.