diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
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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 */ | ||