diff options
| author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
|---|---|---|
| committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
| commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
| tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /drivers/media/dvb/dvb-core/demux.h | |
| parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) | |
Diffstat (limited to 'drivers/media/dvb/dvb-core/demux.h')
| -rw-r--r-- | drivers/media/dvb/dvb-core/demux.h | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-core/demux.h b/drivers/media/dvb/dvb-core/demux.h new file mode 100644 index 00000000000..eb91fd808c1 --- /dev/null +++ b/drivers/media/dvb/dvb-core/demux.h | |||
| @@ -0,0 +1,280 @@ | |||
| 1 | /* | ||
| 2 | * demux.h | ||
| 3 | * | ||
| 4 | * Copyright (c) 2002 Convergence GmbH | ||
| 5 | * | ||
| 6 | * based on code: | ||
| 7 | * Copyright (c) 2000 Nokia Research Center | ||
| 8 | * Tampere, FINLAND | ||
| 9 | * | ||
| 10 | * This program is free software; you can redistribute it and/or | ||
| 11 | * modify it under the terms of the GNU Lesser General Public License | ||
| 12 | * as published by the Free Software Foundation; either version 2.1 | ||
| 13 | * of the License, or (at your option) any later version. | ||
| 14 | * | ||
| 15 | * This program is distributed in the hope that it will be useful, | ||
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 18 | * GNU General Public License for more details. | ||
| 19 | * | ||
| 20 | * You should have received a copy of the GNU Lesser General Public License | ||
| 21 | * along with this program; if not, write to the Free Software | ||
| 22 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
| 23 | * | ||
| 24 | */ | ||
| 25 | |||
| 26 | #ifndef __DEMUX_H | ||
| 27 | #define __DEMUX_H | ||
| 28 | |||
| 29 | #include <linux/types.h> | ||
| 30 | #include <linux/errno.h> | ||
| 31 | #include <linux/list.h> | ||
| 32 | #include <linux/time.h> | ||
| 33 | #include <linux/dvb/dmx.h> | ||
| 34 | |||
| 35 | /*--------------------------------------------------------------------------*/ | ||
| 36 | /* Common definitions */ | ||
| 37 | /*--------------------------------------------------------------------------*/ | ||
| 38 | |||
| 39 | /* | ||
| 40 | * DMX_MAX_FILTER_SIZE: Maximum length (in bytes) of a section/PES filter. | ||
| 41 | */ | ||
| 42 | |||
| 43 | #ifndef DMX_MAX_FILTER_SIZE | ||
| 44 | #define DMX_MAX_FILTER_SIZE 18 | ||
| 45 | #endif | ||
| 46 | |||
| 47 | /* | ||
| 48 | * DMX_MAX_SECFEED_SIZE: Maximum length (in bytes) of a private section feed filter. | ||
| 49 | */ | ||
| 50 | |||
| 51 | #ifndef DMX_MAX_SECTION_SIZE | ||
| 52 | #define DMX_MAX_SECTION_SIZE 4096 | ||
| 53 | #endif | ||
| 54 | #ifndef DMX_MAX_SECFEED_SIZE | ||
| 55 | #define DMX_MAX_SECFEED_SIZE (DMX_MAX_SECTION_SIZE + 188) | ||
| 56 | #endif | ||
| 57 | |||
| 58 | |||
| 59 | /* | ||
| 60 | * enum dmx_success: Success codes for the Demux Callback API. | ||
| 61 | */ | ||
| 62 | |||
| 63 | enum dmx_success { | ||
| 64 | DMX_OK = 0, /* Received Ok */ | ||
| 65 | DMX_LENGTH_ERROR, /* Incorrect length */ | ||
| 66 | DMX_OVERRUN_ERROR, /* Receiver ring buffer overrun */ | ||
| 67 | DMX_CRC_ERROR, /* Incorrect CRC */ | ||
| 68 | DMX_FRAME_ERROR, /* Frame alignment error */ | ||
| 69 | DMX_FIFO_ERROR, /* Receiver FIFO overrun */ | ||
| 70 | DMX_MISSED_ERROR /* Receiver missed packet */ | ||
| 71 | } ; | ||
| 72 | |||
| 73 | /*--------------------------------------------------------------------------*/ | ||
| 74 | /* TS packet reception */ | ||
| 75 | /*--------------------------------------------------------------------------*/ | ||
| 76 | |||
| 77 | /* TS filter type for set() */ | ||
| 78 | |||
| 79 | #define TS_PACKET 1 /* send TS packets (188 bytes) to callback (default) */ | ||
| 80 | #define TS_PAYLOAD_ONLY 2 /* in case TS_PACKET is set, only send the TS | ||
| 81 | payload (<=184 bytes per packet) to callback */ | ||
| 82 | #define TS_DECODER 4 /* send stream to built-in decoder (if present) */ | ||
| 83 | #define TS_DEMUX 8 /* in case TS_PACKET is set, send the TS to | ||
| 84 | the demux device, not to the dvr device */ | ||
| 85 | |||
| 86 | /* PES type for filters which write to built-in decoder */ | ||
| 87 | /* these should be kept identical to the types in dmx.h */ | ||
| 88 | |||
| 89 | enum dmx_ts_pes | ||
| 90 | { /* also send packets to decoder (if it exists) */ | ||
| 91 | DMX_TS_PES_AUDIO0, | ||
| 92 | DMX_TS_PES_VIDEO0, | ||
| 93 | DMX_TS_PES_TELETEXT0, | ||
| 94 | DMX_TS_PES_SUBTITLE0, | ||
| 95 | DMX_TS_PES_PCR0, | ||
| 96 | |||
| 97 | DMX_TS_PES_AUDIO1, | ||
| 98 | DMX_TS_PES_VIDEO1, | ||
| 99 | DMX_TS_PES_TELETEXT1, | ||
| 100 | DMX_TS_PES_SUBTITLE1, | ||
| 101 | DMX_TS_PES_PCR1, | ||
| 102 | |||
| 103 | DMX_TS_PES_AUDIO2, | ||
| 104 | DMX_TS_PES_VIDEO2, | ||
| 105 | DMX_TS_PES_TELETEXT2, | ||
| 106 | DMX_TS_PES_SUBTITLE2, | ||
| 107 | DMX_TS_PES_PCR2, | ||
| 108 | |||
| 109 | DMX_TS_PES_AUDIO3, | ||
| 110 | DMX_TS_PES_VIDEO3, | ||
| 111 | DMX_TS_PES_TELETEXT3, | ||
| 112 | DMX_TS_PES_SUBTITLE3, | ||
| 113 | DMX_TS_PES_PCR3, | ||
| 114 | |||
| 115 | DMX_TS_PES_OTHER | ||
| 116 | }; | ||
| 117 | |||
| 118 | #define DMX_TS_PES_AUDIO DMX_TS_PES_AUDIO0 | ||
| 119 | #define DMX_TS_PES_VIDEO DMX_TS_PES_VIDEO0 | ||
| 120 | #define DMX_TS_PES_TELETEXT DMX_TS_PES_TELETEXT0 | ||
| 121 | #define DMX_TS_PES_SUBTITLE DMX_TS_PES_SUBTITLE0 | ||
| 122 | #define DMX_TS_PES_PCR DMX_TS_PES_PCR0 | ||
| 123 | |||
| 124 | |||
| 125 | struct dmx_ts_feed { | ||
| 126 | int is_filtering; /* Set to non-zero when filtering in progress */ | ||
| 127 | struct dmx_demux *parent; /* Back-pointer */ | ||
| 128 | void *priv; /* Pointer to private data of the API client */ | ||
| 129 | int (*set) (struct dmx_ts_feed *feed, | ||
| 130 | u16 pid, | ||
| 131 | int type, | ||
| 132 | enum dmx_ts_pes pes_type, | ||
| 133 | size_t circular_buffer_size, | ||
| 134 | struct timespec timeout); | ||
| 135 | int (*start_filtering) (struct dmx_ts_feed* feed); | ||
| 136 | int (*stop_filtering) (struct dmx_ts_feed* feed); | ||
| 137 | }; | ||
| 138 | |||
| 139 | /*--------------------------------------------------------------------------*/ | ||
| 140 | /* Section reception */ | ||
| 141 | /*--------------------------------------------------------------------------*/ | ||
| 142 | |||
| 143 | struct dmx_section_filter { | ||
| 144 | u8 filter_value [DMX_MAX_FILTER_SIZE]; | ||
| 145 | u8 filter_mask [DMX_MAX_FILTER_SIZE]; | ||
| 146 | u8 filter_mode [DMX_MAX_FILTER_SIZE]; | ||
| 147 | struct dmx_section_feed* parent; /* Back-pointer */ | ||
| 148 | void* priv; /* Pointer to private data of the API client */ | ||
| 149 | }; | ||
| 150 | |||
| 151 | struct dmx_section_feed { | ||
| 152 | int is_filtering; /* Set to non-zero when filtering in progress */ | ||
| 153 | struct dmx_demux* parent; /* Back-pointer */ | ||
| 154 | void* priv; /* Pointer to private data of the API client */ | ||
| 155 | |||
| 156 | int check_crc; | ||
| 157 | u32 crc_val; | ||
| 158 | |||
| 159 | u8 *secbuf; | ||
| 160 | u8 secbuf_base[DMX_MAX_SECFEED_SIZE]; | ||
| 161 | u16 secbufp, seclen, tsfeedp; | ||
| 162 | |||
| 163 | int (*set) (struct dmx_section_feed* feed, | ||
| 164 | u16 pid, | ||
| 165 | size_t circular_buffer_size, | ||
| 166 | int check_crc); | ||
| 167 | int (*allocate_filter) (struct dmx_section_feed* feed, | ||
| 168 | struct dmx_section_filter** filter); | ||
| 169 | int (*release_filter) (struct dmx_section_feed* feed, | ||
| 170 | struct dmx_section_filter* filter); | ||
| 171 | int (*start_filtering) (struct dmx_section_feed* feed); | ||
| 172 | int (*stop_filtering) (struct dmx_section_feed* feed); | ||
| 173 | }; | ||
| 174 | |||
| 175 | /*--------------------------------------------------------------------------*/ | ||
| 176 | /* Callback functions */ | ||
| 177 | /*--------------------------------------------------------------------------*/ | ||
| 178 | |||
| 179 | typedef int (*dmx_ts_cb) ( const u8 * buffer1, | ||
| 180 | size_t buffer1_length, | ||
| 181 | const u8 * buffer2, | ||
| 182 | size_t buffer2_length, | ||
| 183 | struct dmx_ts_feed* source, | ||
| 184 | enum dmx_success success); | ||
| 185 | |||
| 186 | typedef int (*dmx_section_cb) ( const u8 * buffer1, | ||
| 187 | size_t buffer1_len, | ||
| 188 | const u8 * buffer2, | ||
| 189 | size_t buffer2_len, | ||
| 190 | struct dmx_section_filter * source, | ||
| 191 | enum dmx_success success); | ||
| 192 | |||
| 193 | /*--------------------------------------------------------------------------*/ | ||
| 194 | /* DVB Front-End */ | ||
| 195 | /*--------------------------------------------------------------------------*/ | ||
| 196 | |||
| 197 | enum dmx_frontend_source { | ||
| 198 | DMX_MEMORY_FE, | ||
| 199 | DMX_FRONTEND_0, | ||
| 200 | DMX_FRONTEND_1, | ||
| 201 | DMX_FRONTEND_2, | ||
| 202 | DMX_FRONTEND_3, | ||
| 203 | DMX_STREAM_0, /* external stream input, e.g. LVDS */ | ||
| 204 | DMX_STREAM_1, | ||
| 205 | DMX_STREAM_2, | ||
| 206 | DMX_STREAM_3 | ||
| 207 | }; | ||
| 208 | |||
| 209 | struct dmx_frontend { | ||
| 210 | struct list_head connectivity_list; /* List of front-ends that can | ||
| 211 | be connected to a particular | ||
| 212 | demux */ | ||
| 213 | enum dmx_frontend_source source; | ||
| 214 | }; | ||
| 215 | |||
| 216 | /*--------------------------------------------------------------------------*/ | ||
| 217 | /* MPEG-2 TS Demux */ | ||
| 218 | /*--------------------------------------------------------------------------*/ | ||
| 219 | |||
| 220 | /* | ||
| 221 | * Flags OR'ed in the capabilities field of struct dmx_demux. | ||
| 222 | */ | ||
| 223 | |||
| 224 | #define DMX_TS_FILTERING 1 | ||
| 225 | #define DMX_PES_FILTERING 2 | ||
| 226 | #define DMX_SECTION_FILTERING 4 | ||
| 227 | #define DMX_MEMORY_BASED_FILTERING 8 /* write() available */ | ||
| 228 | #define DMX_CRC_CHECKING 16 | ||
| 229 | #define DMX_TS_DESCRAMBLING 32 | ||
| 230 | |||
| 231 | /* | ||
| 232 | * Demux resource type identifier. | ||
| 233 | */ | ||
| 234 | |||
| 235 | /* | ||
| 236 | * DMX_FE_ENTRY(): Casts elements in the list of registered | ||
| 237 | * front-ends from the generic type struct list_head | ||
| 238 | * to the type * struct dmx_frontend | ||
| 239 | *. | ||
| 240 | */ | ||
| 241 | |||
| 242 | #define DMX_FE_ENTRY(list) list_entry(list, struct dmx_frontend, connectivity_list) | ||
| 243 | |||
| 244 | struct dmx_demux { | ||
| 245 | u32 capabilities; /* Bitfield of capability flags */ | ||
| 246 | struct dmx_frontend* frontend; /* Front-end connected to the demux */ | ||
| 247 | void* priv; /* Pointer to private data of the API client */ | ||
| 248 | int (*open) (struct dmx_demux* demux); | ||
| 249 | int (*close) (struct dmx_demux* demux); | ||
| 250 | int (*write) (struct dmx_demux* demux, const char __user *buf, size_t count); | ||
| 251 | int (*allocate_ts_feed) (struct dmx_demux* demux, | ||
| 252 | struct dmx_ts_feed** feed, | ||
| 253 | dmx_ts_cb callback); | ||
| 254 | int (*release_ts_feed) (struct dmx_demux* demux, | ||
| 255 | struct dmx_ts_feed* feed); | ||
| 256 | int (*allocate_section_feed) (struct dmx_demux* demux, | ||
| 257 | struct dmx_section_feed** feed, | ||
| 258 | dmx_section_cb callback); | ||
| 259 | int (*release_section_feed) (struct dmx_demux* demux, | ||
| 260 | struct dmx_section_feed* feed); | ||
| 261 | int (*add_frontend) (struct dmx_demux* demux, | ||
| 262 | struct dmx_frontend* frontend); | ||
| 263 | int (*remove_frontend) (struct dmx_demux* demux, | ||
| 264 | struct dmx_frontend* frontend); | ||
| 265 | struct list_head* (*get_frontends) (struct dmx_demux* demux); | ||
| 266 | int (*connect_frontend) (struct dmx_demux* demux, | ||
| 267 | struct dmx_frontend* frontend); | ||
| 268 | int (*disconnect_frontend) (struct dmx_demux* demux); | ||
| 269 | |||
| 270 | int (*get_pes_pids) (struct dmx_demux* demux, u16 *pids); | ||
| 271 | |||
| 272 | int (*get_caps) (struct dmx_demux* demux, struct dmx_caps *caps); | ||
| 273 | |||
| 274 | int (*set_source) (struct dmx_demux* demux, const dmx_source_t *src); | ||
| 275 | |||
| 276 | int (*get_stc) (struct dmx_demux* demux, unsigned int num, | ||
| 277 | u64 *stc, unsigned int *base); | ||
| 278 | }; | ||
| 279 | |||
| 280 | #endif /* #ifndef __DEMUX_H */ | ||
