| 1 | /* $NetBSD: dtvvar.h,v 1.6 2011/08/09 01:42:24 jmcneill Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca> |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. All advertising materials mentioning features or use of this software |
| 16 | * must display the following acknowledgement: |
| 17 | * This product includes software developed by Jared D. McNeill. |
| 18 | * 4. Neither the name of The NetBSD Foundation nor the names of its |
| 19 | * contributors may be used to endorse or promote products derived |
| 20 | * from this software without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 23 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 24 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 25 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 26 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 29 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 30 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 31 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 32 | * POSSIBILITY OF SUCH DAMAGE. |
| 33 | */ |
| 34 | |
| 35 | #ifndef _DEV_DTV_DTVVAR_H |
| 36 | #define _DEV_DTV_DTVVAR_H |
| 37 | |
| 38 | #include <dev/dtv/dtvif.h> |
| 39 | #include <dev/dtv/dtv_scatter.h> |
| 40 | |
| 41 | #define DTV_DEFAULT_BLOCKSIZE (32 * PAGE_SIZE) |
| 42 | #define DTV_DEFAULT_BUFSIZE (32 * DTV_DEFAULT_BLOCKSIZE) |
| 43 | |
| 44 | #define TS_PKTLEN 188 |
| 45 | #define TS_HAS_SYNC(_tspkt) ((_tspkt)[0] == 0x47) |
| 46 | #define TS_HAS_PUSI(_tspkt) ((_tspkt)[1] & 0x40) |
| 47 | #define TS_HAS_AF(_tspkt) ((_tspkt)[3] & 0x20) |
| 48 | #define TS_HAS_PAYLOAD(_tspkt) ((_tspkt)[3] & 0x10) |
| 49 | #define TS_PID(_tspkt) ((((_tspkt)[1] & 0x1f) << 8) | (_tspkt)[2]) |
| 50 | #define TS_SECTION_MAXLEN 4096 |
| 51 | |
| 52 | struct dtv_buffer { |
| 53 | uint32_t db_offset; |
| 54 | uint32_t db_bytesused; |
| 55 | size_t db_length; |
| 56 | SIMPLEQ_ENTRY(dtv_buffer) db_entries; |
| 57 | }; |
| 58 | |
| 59 | SIMPLEQ_HEAD(dtv_sample_queue, dtv_buffer); |
| 60 | |
| 61 | struct dtv_stream { |
| 62 | unsigned int ds_nbufs; |
| 63 | struct dtv_buffer **ds_buf; |
| 64 | struct dtv_scatter_buf ds_data; |
| 65 | struct dtv_sample_queue ds_ingress, ds_egress; |
| 66 | kmutex_t ds_ingress_lock, ds_egress_lock; |
| 67 | kcondvar_t ds_sample_cv; |
| 68 | struct selinfo ds_sel; |
| 69 | uint32_t ds_bytesread; |
| 70 | }; |
| 71 | |
| 72 | typedef enum { |
| 73 | DTV_DEMUX_MODE_NONE, |
| 74 | DTV_DEMUX_MODE_SECTION, |
| 75 | DTV_DEMUX_MODE_PES, |
| 76 | } dtv_demux_mode_t; |
| 77 | |
| 78 | struct dtv_ts_section { |
| 79 | uint8_t sec_buf[TS_SECTION_MAXLEN]; |
| 80 | uint16_t sec_bytesused; |
| 81 | uint16_t sec_length; |
| 82 | }; |
| 83 | |
| 84 | struct dtv_demux { |
| 85 | struct dtv_softc *dd_sc; |
| 86 | struct selinfo dd_sel; |
| 87 | kmutex_t dd_lock; |
| 88 | kcondvar_t dd_section_cv; |
| 89 | |
| 90 | bool dd_running; |
| 91 | |
| 92 | dtv_demux_mode_t dd_mode; |
| 93 | struct { |
| 94 | struct dmx_sct_filter_params params; |
| 95 | struct dtv_ts_section section[16]; |
| 96 | unsigned int rp, wp; |
| 97 | unsigned int nsections; |
| 98 | bool overflow; |
| 99 | } dd_secfilt; |
| 100 | |
| 101 | TAILQ_ENTRY(dtv_demux) dd_entries; |
| 102 | }; |
| 103 | |
| 104 | struct dtv_ts { |
| 105 | uint8_t ts_pidfilter[0x2000]; |
| 106 | kmutex_t ts_lock; |
| 107 | }; |
| 108 | |
| 109 | struct dtv_softc { |
| 110 | device_t sc_dev; |
| 111 | const struct dtv_hw_if *sc_hw; |
| 112 | void *sc_priv; |
| 113 | |
| 114 | bool sc_dying; |
| 115 | |
| 116 | unsigned int sc_open; |
| 117 | kmutex_t sc_lock; |
| 118 | |
| 119 | size_t sc_bufsize; |
| 120 | bool sc_bufsize_chg; |
| 121 | |
| 122 | struct dtv_stream sc_stream; |
| 123 | struct dtv_ts sc_ts; |
| 124 | |
| 125 | TAILQ_HEAD(, dtv_demux) sc_demux_list; |
| 126 | kmutex_t sc_demux_lock; |
| 127 | int sc_demux_runcnt; |
| 128 | }; |
| 129 | |
| 130 | #define dtv_device_get_devinfo(sc, info) \ |
| 131 | ((sc)->sc_hw->get_devinfo((sc)->sc_priv, (info))) |
| 132 | #define dtv_device_open(sc, flags) \ |
| 133 | ((sc)->sc_hw->open((sc)->sc_priv, (flags))) |
| 134 | #define dtv_device_close(sc) \ |
| 135 | ((sc)->sc_hw->close((sc)->sc_priv)) |
| 136 | #define dtv_device_set_tuner(sc, params) \ |
| 137 | ((sc)->sc_hw->set_tuner((sc)->sc_priv, (params))) |
| 138 | #define dtv_device_get_status(sc) \ |
| 139 | ((sc)->sc_hw->get_status((sc)->sc_priv)) |
| 140 | #define dtv_device_get_signal_strength(sc) \ |
| 141 | ((sc)->sc_hw->get_signal_strength((sc)->sc_priv)) |
| 142 | #define dtv_device_get_snr(sc) \ |
| 143 | ((sc)->sc_hw->get_snr((sc)->sc_priv)) |
| 144 | #define dtv_device_start_transfer(sc) \ |
| 145 | ((sc)->sc_hw->start_transfer((sc)->sc_priv, dtv_buffer_submit, (sc))) |
| 146 | #define dtv_device_stop_transfer(sc) \ |
| 147 | ((sc)->sc_hw->stop_transfer((sc)->sc_priv)) |
| 148 | |
| 149 | int dtv_frontend_ioctl(struct dtv_softc *, u_long, void *, int); |
| 150 | |
| 151 | int dtv_demux_open(struct dtv_softc *, int, int, lwp_t *); |
| 152 | void dtv_demux_write(struct dtv_softc *, const uint8_t *, size_t); |
| 153 | |
| 154 | int dtv_buffer_realloc(struct dtv_softc *, size_t); |
| 155 | int dtv_buffer_setup(struct dtv_softc *); |
| 156 | int dtv_buffer_destroy(struct dtv_softc *); |
| 157 | int dtv_buffer_read(struct dtv_softc *, struct uio *, int); |
| 158 | int dtv_buffer_poll(struct dtv_softc *, int, lwp_t *); |
| 159 | void dtv_buffer_submit(void *, const struct dtv_payload *); |
| 160 | |
| 161 | void dtv_common_close(struct dtv_softc *); |
| 162 | |
| 163 | #endif /* !_DEV_DTV_DTVVAR_H */ |
| 164 | |