1 | /* $NetBSD: video.c,v 1.32 2014/07/25 08:10:35 dholland Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2008 Patrick Mahoney <pat@polycrystal.org> |
5 | * All rights reserved. |
6 | * |
7 | * This code was written by Patrick Mahoney (pat@polycrystal.org) as |
8 | * part of Google Summer of Code 2008. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | |
32 | /* |
33 | * This ia a Video4Linux 2 compatible /dev/video driver for NetBSD |
34 | * |
35 | * See http://v4l2spec.bytesex.org/ for Video4Linux 2 specifications |
36 | */ |
37 | |
38 | #include <sys/cdefs.h> |
39 | __KERNEL_RCSID(0, "$NetBSD: video.c,v 1.32 2014/07/25 08:10:35 dholland Exp $" ); |
40 | |
41 | #include "video.h" |
42 | #if NVIDEO > 0 |
43 | |
44 | #include <sys/param.h> |
45 | #include <sys/ioctl.h> |
46 | #include <sys/fcntl.h> |
47 | #include <sys/vnode.h> |
48 | #include <sys/poll.h> |
49 | #include <sys/select.h> |
50 | #include <sys/kmem.h> |
51 | #include <sys/pool.h> |
52 | #include <sys/conf.h> |
53 | #include <sys/types.h> |
54 | #include <sys/device.h> |
55 | #include <sys/condvar.h> |
56 | #include <sys/queue.h> |
57 | #include <sys/videoio.h> |
58 | |
59 | #include <dev/video_if.h> |
60 | |
61 | /* #define VIDEO_DEBUG 1 */ |
62 | |
63 | #ifdef VIDEO_DEBUG |
64 | #define DPRINTF(x) do { if (videodebug) printf x; } while (0) |
65 | #define DPRINTFN(n,x) do { if (videodebug>(n)) printf x; } while (0) |
66 | int videodebug = VIDEO_DEBUG; |
67 | #else |
68 | #define DPRINTF(x) |
69 | #define DPRINTFN(n,x) |
70 | #endif |
71 | |
72 | #define PAGE_ALIGN(a) (((a) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1)) |
73 | |
74 | #define VIDEO_DRIVER_VERSION \ |
75 | (((__NetBSD_Version__ / 100000000) << 16) | \ |
76 | ((__NetBSD_Version__ / 1000000 % 100) << 8) | \ |
77 | (__NetBSD_Version__ / 100 % 100)) |
78 | |
79 | /* TODO: move to sys/intr.h */ |
80 | #define IPL_VIDEO IPL_VM |
81 | #define splvideo() splvm() |
82 | |
83 | #define VIDEO_MIN_BUFS 2 |
84 | #define VIDEO_MAX_BUFS 32 |
85 | #define VIDEO_NUM_BUFS 4 |
86 | |
87 | /* Scatter Buffer - an array of fixed size (PAGE_SIZE) chunks |
88 | * allocated non-contiguously and functions to get data into and out |
89 | * of the scatter buffer. */ |
90 | struct scatter_buf { |
91 | pool_cache_t sb_pool; |
92 | size_t sb_size; /* size in bytes */ |
93 | size_t sb_npages; /* number of pages */ |
94 | uint8_t **sb_page_ary; /* array of page pointers */ |
95 | }; |
96 | |
97 | struct scatter_io { |
98 | struct scatter_buf *sio_buf; |
99 | off_t sio_offset; |
100 | size_t sio_resid; |
101 | }; |
102 | |
103 | static void scatter_buf_init(struct scatter_buf *); |
104 | static void scatter_buf_destroy(struct scatter_buf *); |
105 | static int scatter_buf_set_size(struct scatter_buf *, size_t); |
106 | static paddr_t scatter_buf_map(struct scatter_buf *, off_t); |
107 | |
108 | static bool scatter_io_init(struct scatter_buf *, off_t, size_t, struct scatter_io *); |
109 | static bool scatter_io_next(struct scatter_io *, void **, size_t *); |
110 | static void scatter_io_undo(struct scatter_io *, size_t); |
111 | static void scatter_io_copyin(struct scatter_io *, const void *); |
112 | /* static void scatter_io_copyout(struct scatter_io *, void *); */ |
113 | static int scatter_io_uiomove(struct scatter_io *, struct uio *); |
114 | |
115 | |
116 | enum video_stream_method { |
117 | VIDEO_STREAM_METHOD_NONE, |
118 | VIDEO_STREAM_METHOD_READ, |
119 | VIDEO_STREAM_METHOD_MMAP, |
120 | VIDEO_STREAM_METHOD_USERPTR |
121 | }; |
122 | |
123 | struct video_buffer { |
124 | struct v4l2_buffer *vb_buf; |
125 | SIMPLEQ_ENTRY(video_buffer) entries; |
126 | }; |
127 | |
128 | SIMPLEQ_HEAD(sample_queue, video_buffer); |
129 | |
130 | struct video_stream { |
131 | int vs_flags; /* flags given to open() */ |
132 | |
133 | struct video_format vs_format; |
134 | |
135 | int vs_frameno; /* toggles between 0 and 1, |
136 | * or -1 if new */ |
137 | uint32_t vs_sequence; /* absoulte frame/sample number in |
138 | * sequence, wraps around */ |
139 | bool vs_drop; /* drop payloads from current |
140 | * frameno? */ |
141 | |
142 | enum v4l2_buf_type vs_type; |
143 | uint8_t vs_nbufs; |
144 | struct video_buffer **vs_buf; |
145 | |
146 | struct scatter_buf vs_data; /* stores video data for MMAP |
147 | * and READ */ |
148 | |
149 | /* Video samples may exist in different locations. Initially, |
150 | * samples are queued into the ingress queue. The driver |
151 | * grabs these in turn and fills them with video data. Once |
152 | * filled, they are moved to the egress queue. Samples are |
153 | * dequeued either by user with MMAP method or, with READ |
154 | * method, videoread() works from the fist sample in the |
155 | * ingress queue without dequeing. In the first case, the |
156 | * user re-queues the buffer when finished, and videoread() |
157 | * does the same when all data has been read. The sample now |
158 | * returns to the ingress queue. */ |
159 | struct sample_queue vs_ingress; /* samples under driver control */ |
160 | struct sample_queue vs_egress; /* samples headed for userspace */ |
161 | |
162 | bool vs_streaming; |
163 | enum video_stream_method vs_method; /* method by which |
164 | * userspace will read |
165 | * samples */ |
166 | |
167 | kmutex_t vs_lock; /* Lock to manipulate queues. |
168 | * Should also be held when |
169 | * changing number of |
170 | * buffers. */ |
171 | kcondvar_t vs_sample_cv; /* signaled on new |
172 | * ingress sample */ |
173 | struct selinfo vs_sel; |
174 | |
175 | uint32_t vs_bytesread; /* bytes read() from current |
176 | * sample thus far */ |
177 | }; |
178 | |
179 | struct video_softc { |
180 | device_t sc_dev; |
181 | device_t hw_dev; /* Hardware (parent) device */ |
182 | void * hw_softc; /* Hardware device private softc */ |
183 | const struct video_hw_if *hw_if; /* Hardware interface */ |
184 | |
185 | u_int sc_open; |
186 | int sc_refcnt; |
187 | int sc_opencnt; |
188 | bool sc_dying; |
189 | |
190 | struct video_stream sc_stream_in; |
191 | }; |
192 | static int video_print(void *, const char *); |
193 | |
194 | static int video_match(device_t, cfdata_t, void *); |
195 | static void video_attach(device_t, device_t, void *); |
196 | static int video_detach(device_t, int); |
197 | static int video_activate(device_t, enum devact); |
198 | |
199 | dev_type_open(videoopen); |
200 | dev_type_close(videoclose); |
201 | dev_type_read(videoread); |
202 | dev_type_write(videowrite); |
203 | dev_type_ioctl(videoioctl); |
204 | dev_type_poll(videopoll); |
205 | dev_type_mmap(videommap); |
206 | |
207 | const struct cdevsw video_cdevsw = { |
208 | .d_open = videoopen, |
209 | .d_close = videoclose, |
210 | .d_read = videoread, |
211 | .d_write = videowrite, |
212 | .d_ioctl = videoioctl, |
213 | .d_stop = nostop, |
214 | .d_tty = notty, |
215 | .d_poll = videopoll, |
216 | .d_mmap = videommap, |
217 | .d_kqfilter = nokqfilter, |
218 | .d_discard = nodiscard, |
219 | .d_flag = D_OTHER |
220 | }; |
221 | |
222 | #define VIDEOUNIT(n) (minor(n)) |
223 | |
224 | CFATTACH_DECL_NEW(video, sizeof(struct video_softc), |
225 | video_match, video_attach, video_detach, video_activate); |
226 | |
227 | extern struct cfdriver video_cd; |
228 | |
229 | static const char * video_pixel_format_str(enum video_pixel_format); |
230 | |
231 | /* convert various values from V4L2 to native values of this driver */ |
232 | static uint16_t v4l2id_to_control_id(uint32_t); |
233 | static uint32_t control_flags_to_v4l2flags(uint32_t); |
234 | static enum v4l2_ctrl_type control_type_to_v4l2type(enum video_control_type); |
235 | |
236 | static void v4l2_format_to_video_format(const struct v4l2_format *, |
237 | struct video_format *); |
238 | static void video_format_to_v4l2_format(const struct video_format *, |
239 | struct v4l2_format *); |
240 | static void v4l2_standard_to_video_standard(v4l2_std_id, |
241 | enum video_standard *); |
242 | static void video_standard_to_v4l2_standard(enum video_standard, |
243 | struct v4l2_standard *); |
244 | static void v4l2_input_to_video_input(const struct v4l2_input *, |
245 | struct video_input *); |
246 | static void video_input_to_v4l2_input(const struct video_input *, |
247 | struct v4l2_input *); |
248 | static void v4l2_audio_to_video_audio(const struct v4l2_audio *, |
249 | struct video_audio *); |
250 | static void video_audio_to_v4l2_audio(const struct video_audio *, |
251 | struct v4l2_audio *); |
252 | static void v4l2_tuner_to_video_tuner(const struct v4l2_tuner *, |
253 | struct video_tuner *); |
254 | static void video_tuner_to_v4l2_tuner(const struct video_tuner *, |
255 | struct v4l2_tuner *); |
256 | |
257 | /* V4L2 api functions, typically called from videoioctl() */ |
258 | static int video_enum_format(struct video_softc *, struct v4l2_fmtdesc *); |
259 | static int video_get_format(struct video_softc *, |
260 | struct v4l2_format *); |
261 | static int video_set_format(struct video_softc *, |
262 | struct v4l2_format *); |
263 | static int video_try_format(struct video_softc *, |
264 | struct v4l2_format *); |
265 | static int video_enum_standard(struct video_softc *, |
266 | struct v4l2_standard *); |
267 | static int video_get_standard(struct video_softc *, v4l2_std_id *); |
268 | static int video_set_standard(struct video_softc *, v4l2_std_id); |
269 | static int video_enum_input(struct video_softc *, struct v4l2_input *); |
270 | static int video_get_input(struct video_softc *, int *); |
271 | static int video_set_input(struct video_softc *, int); |
272 | static int video_enum_audio(struct video_softc *, struct v4l2_audio *); |
273 | static int video_get_audio(struct video_softc *, struct v4l2_audio *); |
274 | static int video_set_audio(struct video_softc *, struct v4l2_audio *); |
275 | static int video_get_tuner(struct video_softc *, struct v4l2_tuner *); |
276 | static int video_set_tuner(struct video_softc *, struct v4l2_tuner *); |
277 | static int video_get_frequency(struct video_softc *, |
278 | struct v4l2_frequency *); |
279 | static int video_set_frequency(struct video_softc *, |
280 | struct v4l2_frequency *); |
281 | static int video_query_control(struct video_softc *, |
282 | struct v4l2_queryctrl *); |
283 | static int video_get_control(struct video_softc *, |
284 | struct v4l2_control *); |
285 | static int video_set_control(struct video_softc *, |
286 | const struct v4l2_control *); |
287 | static int video_request_bufs(struct video_softc *, |
288 | struct v4l2_requestbuffers *); |
289 | static int video_query_buf(struct video_softc *, struct v4l2_buffer *); |
290 | static int video_queue_buf(struct video_softc *, struct v4l2_buffer *); |
291 | static int video_dequeue_buf(struct video_softc *, struct v4l2_buffer *); |
292 | static int video_stream_on(struct video_softc *, enum v4l2_buf_type); |
293 | static int video_stream_off(struct video_softc *, enum v4l2_buf_type); |
294 | |
295 | static struct video_buffer * video_buffer_alloc(void); |
296 | static void video_buffer_free(struct video_buffer *); |
297 | |
298 | |
299 | /* functions for video_stream */ |
300 | static void video_stream_init(struct video_stream *); |
301 | static void video_stream_fini(struct video_stream *); |
302 | |
303 | static int video_stream_setup_bufs(struct video_stream *, |
304 | enum video_stream_method, |
305 | uint8_t); |
306 | static void video_stream_teardown_bufs(struct video_stream *); |
307 | |
308 | static int video_stream_realloc_bufs(struct video_stream *, uint8_t); |
309 | #define video_stream_free_bufs(vs) \ |
310 | video_stream_realloc_bufs((vs), 0) |
311 | |
312 | static void video_stream_enqueue(struct video_stream *, |
313 | struct video_buffer *); |
314 | static struct video_buffer * video_stream_dequeue(struct video_stream *); |
315 | static void video_stream_write(struct video_stream *, |
316 | const struct video_payload *); |
317 | static void video_stream_sample_done(struct video_stream *); |
318 | |
319 | #ifdef VIDEO_DEBUG |
320 | /* debugging */ |
321 | static const char * video_ioctl_str(u_long); |
322 | #endif |
323 | |
324 | |
325 | static int |
326 | video_match(device_t parent, cfdata_t match, void *aux) |
327 | { |
328 | #ifdef VIDEO_DEBUG |
329 | struct video_attach_args *args; |
330 | |
331 | args = aux; |
332 | DPRINTF(("video_match: hw=%p\n" , args->hw_if)); |
333 | #endif |
334 | return 1; |
335 | } |
336 | |
337 | |
338 | static void |
339 | video_attach(device_t parent, device_t self, void *aux) |
340 | { |
341 | struct video_softc *sc; |
342 | struct video_attach_args *args; |
343 | |
344 | sc = device_private(self); |
345 | args = aux; |
346 | |
347 | sc->sc_dev = self; |
348 | sc->hw_dev = parent; |
349 | sc->hw_if = args->hw_if; |
350 | sc->hw_softc = device_private(parent); |
351 | |
352 | sc->sc_open = 0; |
353 | sc->sc_refcnt = 0; |
354 | sc->sc_opencnt = 0; |
355 | sc->sc_dying = false; |
356 | |
357 | video_stream_init(&sc->sc_stream_in); |
358 | |
359 | aprint_naive("\n" ); |
360 | aprint_normal(": %s\n" , sc->hw_if->get_devname(sc->hw_softc)); |
361 | |
362 | DPRINTF(("video_attach: sc=%p hwif=%p\n" , sc, sc->hw_if)); |
363 | |
364 | if (!pmf_device_register(self, NULL, NULL)) |
365 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
366 | } |
367 | |
368 | |
369 | static int |
370 | video_activate(device_t self, enum devact act) |
371 | { |
372 | struct video_softc *sc = device_private(self); |
373 | |
374 | DPRINTF(("video_activate: sc=%p\n" , sc)); |
375 | switch (act) { |
376 | case DVACT_DEACTIVATE: |
377 | sc->sc_dying = true; |
378 | return 0; |
379 | default: |
380 | return EOPNOTSUPP; |
381 | } |
382 | } |
383 | |
384 | |
385 | static int |
386 | video_detach(device_t self, int flags) |
387 | { |
388 | struct video_softc *sc; |
389 | int maj, mn; |
390 | |
391 | sc = device_private(self); |
392 | DPRINTF(("video_detach: sc=%p flags=%d\n" , sc, flags)); |
393 | |
394 | sc->sc_dying = true; |
395 | |
396 | pmf_device_deregister(self); |
397 | |
398 | maj = cdevsw_lookup_major(&video_cdevsw); |
399 | mn = device_unit(self); |
400 | /* close open instances */ |
401 | vdevgone(maj, mn, mn, VCHR); |
402 | |
403 | video_stream_fini(&sc->sc_stream_in); |
404 | |
405 | return 0; |
406 | } |
407 | |
408 | |
409 | static int |
410 | video_print(void *aux, const char *pnp) |
411 | { |
412 | if (pnp != NULL) { |
413 | DPRINTF(("video_print: have pnp\n" )); |
414 | aprint_normal("%s at %s\n" , "video" , pnp); |
415 | } else { |
416 | DPRINTF(("video_print: pnp is NULL\n" )); |
417 | } |
418 | return UNCONF; |
419 | } |
420 | |
421 | |
422 | /* |
423 | * Called from hardware driver. This is where the MI audio driver |
424 | * gets probed/attached to the hardware driver. |
425 | */ |
426 | device_t |
427 | video_attach_mi(const struct video_hw_if *hw_if, device_t parent) |
428 | { |
429 | struct video_attach_args args; |
430 | |
431 | args.hw_if = hw_if; |
432 | return config_found_ia(parent, "videobus" , &args, video_print); |
433 | } |
434 | |
435 | /* video_submit_payload - called by hardware driver to submit payload data */ |
436 | void |
437 | video_submit_payload(device_t self, const struct video_payload *payload) |
438 | { |
439 | struct video_softc *sc; |
440 | |
441 | sc = device_private(self); |
442 | |
443 | if (sc == NULL) |
444 | return; |
445 | |
446 | video_stream_write(&sc->sc_stream_in, payload); |
447 | } |
448 | |
449 | static const char * |
450 | video_pixel_format_str(enum video_pixel_format px) |
451 | { |
452 | switch (px) { |
453 | case VIDEO_FORMAT_UYVY: return "UYVY" ; |
454 | case VIDEO_FORMAT_YUV420: return "YUV420" ; |
455 | case VIDEO_FORMAT_YUY2: return "YUYV" ; |
456 | case VIDEO_FORMAT_NV12: return "NV12" ; |
457 | case VIDEO_FORMAT_RGB24: return "RGB24" ; |
458 | case VIDEO_FORMAT_RGB555: return "RGB555" ; |
459 | case VIDEO_FORMAT_RGB565: return "RGB565" ; |
460 | case VIDEO_FORMAT_SBGGR8: return "SBGGR8" ; |
461 | case VIDEO_FORMAT_MJPEG: return "MJPEG" ; |
462 | case VIDEO_FORMAT_DV: return "DV" ; |
463 | case VIDEO_FORMAT_MPEG: return "MPEG" ; |
464 | default: return "Unknown" ; |
465 | } |
466 | } |
467 | |
468 | /* Takes a V4L2 id and returns a "native" video driver control id. |
469 | * TODO: is there a better way to do this? some kind of array? */ |
470 | static uint16_t |
471 | v4l2id_to_control_id(uint32_t v4l2id) |
472 | { |
473 | /* mask includes class bits and control id bits */ |
474 | switch (v4l2id & 0xffffff) { |
475 | case V4L2_CID_BRIGHTNESS: return VIDEO_CONTROL_BRIGHTNESS; |
476 | case V4L2_CID_CONTRAST: return VIDEO_CONTROL_CONTRAST; |
477 | case V4L2_CID_SATURATION: return VIDEO_CONTROL_SATURATION; |
478 | case V4L2_CID_HUE: return VIDEO_CONTROL_HUE; |
479 | case V4L2_CID_HUE_AUTO: return VIDEO_CONTROL_HUE_AUTO; |
480 | case V4L2_CID_SHARPNESS: return VIDEO_CONTROL_SHARPNESS; |
481 | case V4L2_CID_GAMMA: return VIDEO_CONTROL_GAMMA; |
482 | |
483 | /* "black level" means the same as "brightness", but V4L2 |
484 | * defines two separate controls that are not identical. |
485 | * V4L2_CID_BLACK_LEVEL is deprecated however in V4L2. */ |
486 | case V4L2_CID_BLACK_LEVEL: return VIDEO_CONTROL_BRIGHTNESS; |
487 | |
488 | case V4L2_CID_AUDIO_VOLUME: return VIDEO_CONTROL_UNDEFINED; |
489 | case V4L2_CID_AUDIO_BALANCE: return VIDEO_CONTROL_UNDEFINED; |
490 | case V4L2_CID_AUDIO_BASS: return VIDEO_CONTROL_UNDEFINED; |
491 | case V4L2_CID_AUDIO_TREBLE: return VIDEO_CONTROL_UNDEFINED; |
492 | case V4L2_CID_AUDIO_MUTE: return VIDEO_CONTROL_UNDEFINED; |
493 | case V4L2_CID_AUDIO_LOUDNESS: return VIDEO_CONTROL_UNDEFINED; |
494 | |
495 | case V4L2_CID_AUTO_WHITE_BALANCE: |
496 | return VIDEO_CONTROL_WHITE_BALANCE_AUTO; |
497 | case V4L2_CID_DO_WHITE_BALANCE: |
498 | return VIDEO_CONTROL_WHITE_BALANCE_ACTION; |
499 | case V4L2_CID_RED_BALANCE: |
500 | case V4L2_CID_BLUE_BALANCE: |
501 | /* This might not fit in with the control_id/value_id scheme */ |
502 | return VIDEO_CONTROL_WHITE_BALANCE_COMPONENT; |
503 | case V4L2_CID_WHITE_BALANCE_TEMPERATURE: |
504 | return VIDEO_CONTROL_WHITE_BALANCE_TEMPERATURE; |
505 | case V4L2_CID_EXPOSURE: |
506 | return VIDEO_CONTROL_EXPOSURE_TIME_ABSOLUTE; |
507 | case V4L2_CID_GAIN: return VIDEO_CONTROL_GAIN; |
508 | case V4L2_CID_AUTOGAIN: return VIDEO_CONTROL_GAIN_AUTO; |
509 | case V4L2_CID_HFLIP: return VIDEO_CONTROL_HFLIP; |
510 | case V4L2_CID_VFLIP: return VIDEO_CONTROL_VFLIP; |
511 | case V4L2_CID_HCENTER_DEPRECATED: |
512 | case V4L2_CID_VCENTER_DEPRECATED: |
513 | return VIDEO_CONTROL_UNDEFINED; |
514 | case V4L2_CID_POWER_LINE_FREQUENCY: |
515 | return VIDEO_CONTROL_POWER_LINE_FREQUENCY; |
516 | case V4L2_CID_BACKLIGHT_COMPENSATION: |
517 | return VIDEO_CONTROL_BACKLIGHT_COMPENSATION; |
518 | default: return V4L2_CTRL_ID2CID(v4l2id); |
519 | } |
520 | } |
521 | |
522 | |
523 | static uint32_t |
524 | control_flags_to_v4l2flags(uint32_t flags) |
525 | { |
526 | uint32_t v4l2flags = 0; |
527 | |
528 | if (flags & VIDEO_CONTROL_FLAG_DISABLED) |
529 | v4l2flags |= V4L2_CTRL_FLAG_INACTIVE; |
530 | |
531 | if (!(flags & VIDEO_CONTROL_FLAG_WRITE)) |
532 | v4l2flags |= V4L2_CTRL_FLAG_READ_ONLY; |
533 | |
534 | if (flags & VIDEO_CONTROL_FLAG_AUTOUPDATE) |
535 | v4l2flags |= V4L2_CTRL_FLAG_GRABBED; |
536 | |
537 | return v4l2flags; |
538 | } |
539 | |
540 | |
541 | static enum v4l2_ctrl_type |
542 | control_type_to_v4l2type(enum video_control_type type) { |
543 | switch (type) { |
544 | case VIDEO_CONTROL_TYPE_INT: return V4L2_CTRL_TYPE_INTEGER; |
545 | case VIDEO_CONTROL_TYPE_BOOL: return V4L2_CTRL_TYPE_BOOLEAN; |
546 | case VIDEO_CONTROL_TYPE_LIST: return V4L2_CTRL_TYPE_MENU; |
547 | case VIDEO_CONTROL_TYPE_ACTION: return V4L2_CTRL_TYPE_BUTTON; |
548 | default: return V4L2_CTRL_TYPE_INTEGER; /* err? */ |
549 | } |
550 | } |
551 | |
552 | |
553 | static int |
554 | video_query_control(struct video_softc *sc, |
555 | struct v4l2_queryctrl *query) |
556 | { |
557 | const struct video_hw_if *hw; |
558 | struct video_control_desc_group desc_group; |
559 | struct video_control_desc desc; |
560 | int err; |
561 | |
562 | hw = sc->hw_if; |
563 | if (hw->get_control_desc_group) { |
564 | desc.group_id = desc.control_id = |
565 | v4l2id_to_control_id(query->id); |
566 | |
567 | desc_group.group_id = desc.group_id; |
568 | desc_group.length = 1; |
569 | desc_group.desc = &desc; |
570 | |
571 | err = hw->get_control_desc_group(sc->hw_softc, &desc_group); |
572 | if (err != 0) |
573 | return err; |
574 | |
575 | query->type = control_type_to_v4l2type(desc.type); |
576 | memcpy(query->name, desc.name, 32); |
577 | query->minimum = desc.min; |
578 | query->maximum = desc.max; |
579 | query->step = desc.step; |
580 | query->default_value = desc.def; |
581 | query->flags = control_flags_to_v4l2flags(desc.flags); |
582 | |
583 | return 0; |
584 | } else { |
585 | return EINVAL; |
586 | } |
587 | } |
588 | |
589 | |
590 | /* Takes a single Video4Linux2 control and queries the driver for the |
591 | * current value. */ |
592 | static int |
593 | video_get_control(struct video_softc *sc, |
594 | struct v4l2_control *vcontrol) |
595 | { |
596 | const struct video_hw_if *hw; |
597 | struct video_control_group group; |
598 | struct video_control control; |
599 | int err; |
600 | |
601 | hw = sc->hw_if; |
602 | if (hw->get_control_group) { |
603 | control.group_id = control.control_id = |
604 | v4l2id_to_control_id(vcontrol->id); |
605 | /* ?? if "control_id" is arbitrarily defined by the |
606 | * driver, then we need some way to store it... Maybe |
607 | * it doesn't matter for single value controls. */ |
608 | control.value = 0; |
609 | |
610 | group.group_id = control.group_id; |
611 | group.length = 1; |
612 | group.control = &control; |
613 | |
614 | err = hw->get_control_group(sc->hw_softc, &group); |
615 | if (err != 0) |
616 | return err; |
617 | |
618 | vcontrol->value = control.value; |
619 | return 0; |
620 | } else { |
621 | return EINVAL; |
622 | } |
623 | } |
624 | |
625 | static void |
626 | video_format_to_v4l2_format(const struct video_format *src, |
627 | struct v4l2_format *dest) |
628 | { |
629 | /* TODO: what about win and vbi formats? */ |
630 | dest->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
631 | dest->fmt.pix.width = src->width; |
632 | dest->fmt.pix.height = src->height; |
633 | if (VIDEO_INTERLACED(src->interlace_flags)) |
634 | dest->fmt.pix.field = V4L2_FIELD_INTERLACED; |
635 | else |
636 | dest->fmt.pix.field = V4L2_FIELD_NONE; |
637 | dest->fmt.pix.bytesperline = src->stride; |
638 | dest->fmt.pix.sizeimage = src->sample_size; |
639 | dest->fmt.pix.priv = src->priv; |
640 | |
641 | switch (src->color.primaries) { |
642 | case VIDEO_COLOR_PRIMARIES_SMPTE_170M: |
643 | dest->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; |
644 | break; |
645 | /* XXX */ |
646 | case VIDEO_COLOR_PRIMARIES_UNSPECIFIED: |
647 | default: |
648 | dest->fmt.pix.colorspace = 0; |
649 | break; |
650 | } |
651 | |
652 | switch (src->pixel_format) { |
653 | case VIDEO_FORMAT_UYVY: |
654 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY; |
655 | break; |
656 | case VIDEO_FORMAT_YUV420: |
657 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420; |
658 | break; |
659 | case VIDEO_FORMAT_YUY2: |
660 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; |
661 | break; |
662 | case VIDEO_FORMAT_NV12: |
663 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_NV12; |
664 | break; |
665 | case VIDEO_FORMAT_RGB24: |
666 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_RGB24; |
667 | break; |
668 | case VIDEO_FORMAT_RGB555: |
669 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_RGB555; |
670 | break; |
671 | case VIDEO_FORMAT_RGB565: |
672 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_RGB565; |
673 | break; |
674 | case VIDEO_FORMAT_SBGGR8: |
675 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8; |
676 | break; |
677 | case VIDEO_FORMAT_MJPEG: |
678 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_MJPEG; |
679 | break; |
680 | case VIDEO_FORMAT_DV: |
681 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_DV; |
682 | break; |
683 | case VIDEO_FORMAT_MPEG: |
684 | dest->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; |
685 | break; |
686 | case VIDEO_FORMAT_UNDEFINED: |
687 | default: |
688 | DPRINTF(("video_get_format: unknown pixel format %d\n" , |
689 | src->pixel_format)); |
690 | dest->fmt.pix.pixelformat = 0; /* V4L2 doesn't define |
691 | * and "undefined" |
692 | * format? */ |
693 | break; |
694 | } |
695 | |
696 | } |
697 | |
698 | static void |
699 | v4l2_format_to_video_format(const struct v4l2_format *src, |
700 | struct video_format *dest) |
701 | { |
702 | switch (src->type) { |
703 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
704 | dest->width = src->fmt.pix.width; |
705 | dest->height = src->fmt.pix.height; |
706 | |
707 | dest->stride = src->fmt.pix.bytesperline; |
708 | dest->sample_size = src->fmt.pix.sizeimage; |
709 | |
710 | if (src->fmt.pix.field == V4L2_FIELD_INTERLACED) |
711 | dest->interlace_flags = VIDEO_INTERLACE_ON; |
712 | else |
713 | dest->interlace_flags = VIDEO_INTERLACE_OFF; |
714 | |
715 | switch (src->fmt.pix.colorspace) { |
716 | case V4L2_COLORSPACE_SMPTE170M: |
717 | dest->color.primaries = |
718 | VIDEO_COLOR_PRIMARIES_SMPTE_170M; |
719 | break; |
720 | /* XXX */ |
721 | default: |
722 | dest->color.primaries = |
723 | VIDEO_COLOR_PRIMARIES_UNSPECIFIED; |
724 | break; |
725 | } |
726 | |
727 | switch (src->fmt.pix.pixelformat) { |
728 | case V4L2_PIX_FMT_UYVY: |
729 | dest->pixel_format = VIDEO_FORMAT_UYVY; |
730 | break; |
731 | case V4L2_PIX_FMT_YUV420: |
732 | dest->pixel_format = VIDEO_FORMAT_YUV420; |
733 | break; |
734 | case V4L2_PIX_FMT_YUYV: |
735 | dest->pixel_format = VIDEO_FORMAT_YUY2; |
736 | break; |
737 | case V4L2_PIX_FMT_NV12: |
738 | dest->pixel_format = VIDEO_FORMAT_NV12; |
739 | break; |
740 | case V4L2_PIX_FMT_RGB24: |
741 | dest->pixel_format = VIDEO_FORMAT_RGB24; |
742 | break; |
743 | case V4L2_PIX_FMT_RGB555: |
744 | dest->pixel_format = VIDEO_FORMAT_RGB555; |
745 | break; |
746 | case V4L2_PIX_FMT_RGB565: |
747 | dest->pixel_format = VIDEO_FORMAT_RGB565; |
748 | break; |
749 | case V4L2_PIX_FMT_SBGGR8: |
750 | dest->pixel_format = VIDEO_FORMAT_SBGGR8; |
751 | break; |
752 | case V4L2_PIX_FMT_MJPEG: |
753 | dest->pixel_format = VIDEO_FORMAT_MJPEG; |
754 | break; |
755 | case V4L2_PIX_FMT_DV: |
756 | dest->pixel_format = VIDEO_FORMAT_DV; |
757 | break; |
758 | case V4L2_PIX_FMT_MPEG: |
759 | dest->pixel_format = VIDEO_FORMAT_MPEG; |
760 | break; |
761 | default: |
762 | DPRINTF(("video: unknown v4l2 pixel format %d\n" , |
763 | src->fmt.pix.pixelformat)); |
764 | dest->pixel_format = VIDEO_FORMAT_UNDEFINED; |
765 | break; |
766 | } |
767 | break; |
768 | default: |
769 | /* TODO: other v4l2 format types */ |
770 | DPRINTF(("video: unsupported v4l2 format type %d\n" , |
771 | src->type)); |
772 | break; |
773 | } |
774 | } |
775 | |
776 | static int |
777 | video_enum_format(struct video_softc *sc, struct v4l2_fmtdesc *fmtdesc) |
778 | { |
779 | const struct video_hw_if *hw; |
780 | struct video_format vfmt; |
781 | struct v4l2_format fmt; |
782 | int err; |
783 | |
784 | hw = sc->hw_if; |
785 | if (hw->enum_format == NULL) |
786 | return ENOTTY; |
787 | |
788 | err = hw->enum_format(sc->hw_softc, fmtdesc->index, &vfmt); |
789 | if (err != 0) |
790 | return err; |
791 | |
792 | video_format_to_v4l2_format(&vfmt, &fmt); |
793 | |
794 | fmtdesc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; /* TODO: only one type for now */ |
795 | fmtdesc->flags = 0; |
796 | if (vfmt.pixel_format >= VIDEO_FORMAT_MJPEG) |
797 | fmtdesc->flags = V4L2_FMT_FLAG_COMPRESSED; |
798 | strlcpy(fmtdesc->description, |
799 | video_pixel_format_str(vfmt.pixel_format), |
800 | sizeof(fmtdesc->description)); |
801 | fmtdesc->pixelformat = fmt.fmt.pix.pixelformat; |
802 | |
803 | return 0; |
804 | } |
805 | |
806 | static int |
807 | video_get_format(struct video_softc *sc, |
808 | struct v4l2_format *format) |
809 | { |
810 | const struct video_hw_if *hw; |
811 | struct video_format vfmt; |
812 | int err; |
813 | |
814 | hw = sc->hw_if; |
815 | if (hw->get_format == NULL) |
816 | return ENOTTY; |
817 | |
818 | err = hw->get_format(sc->hw_softc, &vfmt); |
819 | if (err != 0) |
820 | return err; |
821 | |
822 | video_format_to_v4l2_format(&vfmt, format); |
823 | |
824 | return 0; |
825 | } |
826 | |
827 | static int |
828 | video_set_format(struct video_softc *sc, struct v4l2_format *fmt) |
829 | { |
830 | const struct video_hw_if *hw; |
831 | struct video_format vfmt; |
832 | int err; |
833 | |
834 | hw = sc->hw_if; |
835 | if (hw->set_format == NULL) |
836 | return ENOTTY; |
837 | |
838 | v4l2_format_to_video_format(fmt, &vfmt); |
839 | |
840 | err = hw->set_format(sc->hw_softc, &vfmt); |
841 | if (err != 0) |
842 | return err; |
843 | |
844 | video_format_to_v4l2_format(&vfmt, fmt); |
845 | sc->sc_stream_in.vs_format = vfmt; |
846 | |
847 | return 0; |
848 | } |
849 | |
850 | |
851 | static int |
852 | video_try_format(struct video_softc *sc, |
853 | struct v4l2_format *format) |
854 | { |
855 | const struct video_hw_if *hw; |
856 | struct video_format vfmt; |
857 | int err; |
858 | |
859 | hw = sc->hw_if; |
860 | if (hw->try_format == NULL) |
861 | return ENOTTY; |
862 | |
863 | v4l2_format_to_video_format(format, &vfmt); |
864 | |
865 | err = hw->try_format(sc->hw_softc, &vfmt); |
866 | if (err != 0) |
867 | return err; |
868 | |
869 | video_format_to_v4l2_format(&vfmt, format); |
870 | |
871 | return 0; |
872 | } |
873 | |
874 | static void |
875 | v4l2_standard_to_video_standard(v4l2_std_id stdid, |
876 | enum video_standard *vstd) |
877 | { |
878 | #define VSTD(id, vid) case (id): *vstd = (vid); break; |
879 | switch (stdid) { |
880 | VSTD(V4L2_STD_NTSC_M, VIDEO_STANDARD_NTSC_M) |
881 | default: |
882 | *vstd = VIDEO_STANDARD_UNKNOWN; |
883 | break; |
884 | } |
885 | #undef VSTD |
886 | } |
887 | |
888 | static void |
889 | video_standard_to_v4l2_standard(enum video_standard vstd, |
890 | struct v4l2_standard *std) |
891 | { |
892 | switch (vstd) { |
893 | case VIDEO_STANDARD_NTSC_M: |
894 | std->id = V4L2_STD_NTSC_M; |
895 | strlcpy(std->name, "NTSC-M" , sizeof(std->name)); |
896 | std->frameperiod.numerator = 1001; |
897 | std->frameperiod.denominator = 30000; |
898 | std->framelines = 525; |
899 | break; |
900 | default: |
901 | std->id = V4L2_STD_UNKNOWN; |
902 | strlcpy(std->name, "Unknown" , sizeof(std->name)); |
903 | break; |
904 | } |
905 | } |
906 | |
907 | static int |
908 | video_enum_standard(struct video_softc *sc, struct v4l2_standard *std) |
909 | { |
910 | const struct video_hw_if *hw = sc->hw_if; |
911 | enum video_standard vstd; |
912 | int err; |
913 | |
914 | /* simple webcam drivers don't need to implement this callback */ |
915 | if (hw->enum_standard == NULL) { |
916 | if (std->index != 0) |
917 | return EINVAL; |
918 | std->id = V4L2_STD_UNKNOWN; |
919 | strlcpy(std->name, "webcam" , sizeof(std->name)); |
920 | return 0; |
921 | } |
922 | |
923 | v4l2_standard_to_video_standard(std->id, &vstd); |
924 | |
925 | err = hw->enum_standard(sc->hw_softc, std->index, &vstd); |
926 | if (err != 0) |
927 | return err; |
928 | |
929 | video_standard_to_v4l2_standard(vstd, std); |
930 | |
931 | return 0; |
932 | } |
933 | |
934 | static int |
935 | video_get_standard(struct video_softc *sc, v4l2_std_id *stdid) |
936 | { |
937 | const struct video_hw_if *hw = sc->hw_if; |
938 | struct v4l2_standard std; |
939 | enum video_standard vstd; |
940 | int err; |
941 | |
942 | /* simple webcam drivers don't need to implement this callback */ |
943 | if (hw->get_standard == NULL) { |
944 | *stdid = V4L2_STD_UNKNOWN; |
945 | return 0; |
946 | } |
947 | |
948 | err = hw->get_standard(sc->hw_softc, &vstd); |
949 | if (err != 0) |
950 | return err; |
951 | |
952 | video_standard_to_v4l2_standard(vstd, &std); |
953 | *stdid = std.id; |
954 | |
955 | return 0; |
956 | } |
957 | |
958 | static int |
959 | video_set_standard(struct video_softc *sc, v4l2_std_id stdid) |
960 | { |
961 | const struct video_hw_if *hw = sc->hw_if; |
962 | enum video_standard vstd; |
963 | |
964 | /* simple webcam drivers don't need to implement this callback */ |
965 | if (hw->set_standard == NULL) { |
966 | if (stdid != V4L2_STD_UNKNOWN) |
967 | return EINVAL; |
968 | return 0; |
969 | } |
970 | |
971 | v4l2_standard_to_video_standard(stdid, &vstd); |
972 | |
973 | return hw->set_standard(sc->hw_softc, vstd); |
974 | } |
975 | |
976 | static void |
977 | v4l2_input_to_video_input(const struct v4l2_input *input, |
978 | struct video_input *vi) |
979 | { |
980 | vi->index = input->index; |
981 | strlcpy(vi->name, input->name, sizeof(vi->name)); |
982 | switch (input->type) { |
983 | case V4L2_INPUT_TYPE_TUNER: |
984 | vi->type = VIDEO_INPUT_TYPE_TUNER; |
985 | break; |
986 | case V4L2_INPUT_TYPE_CAMERA: |
987 | vi->type = VIDEO_INPUT_TYPE_CAMERA; |
988 | break; |
989 | } |
990 | vi->audiomask = input->audioset; |
991 | vi->tuner_index = input->tuner; |
992 | vi->standards = input->std; /* ... values are the same */ |
993 | vi->status = 0; |
994 | if (input->status & V4L2_IN_ST_NO_POWER) |
995 | vi->status |= VIDEO_STATUS_NO_POWER; |
996 | if (input->status & V4L2_IN_ST_NO_SIGNAL) |
997 | vi->status |= VIDEO_STATUS_NO_SIGNAL; |
998 | if (input->status & V4L2_IN_ST_NO_COLOR) |
999 | vi->status |= VIDEO_STATUS_NO_COLOR; |
1000 | if (input->status & V4L2_IN_ST_NO_H_LOCK) |
1001 | vi->status |= VIDEO_STATUS_NO_HLOCK; |
1002 | if (input->status & V4L2_IN_ST_MACROVISION) |
1003 | vi->status |= VIDEO_STATUS_MACROVISION; |
1004 | } |
1005 | |
1006 | static void |
1007 | video_input_to_v4l2_input(const struct video_input *vi, |
1008 | struct v4l2_input *input) |
1009 | { |
1010 | input->index = vi->index; |
1011 | strlcpy(input->name, vi->name, sizeof(input->name)); |
1012 | switch (vi->type) { |
1013 | case VIDEO_INPUT_TYPE_TUNER: |
1014 | input->type = V4L2_INPUT_TYPE_TUNER; |
1015 | break; |
1016 | case VIDEO_INPUT_TYPE_CAMERA: |
1017 | input->type = V4L2_INPUT_TYPE_CAMERA; |
1018 | break; |
1019 | } |
1020 | input->audioset = vi->audiomask; |
1021 | input->tuner = vi->tuner_index; |
1022 | input->std = vi->standards; /* ... values are the same */ |
1023 | input->status = 0; |
1024 | if (vi->status & VIDEO_STATUS_NO_POWER) |
1025 | input->status |= V4L2_IN_ST_NO_POWER; |
1026 | if (vi->status & VIDEO_STATUS_NO_SIGNAL) |
1027 | input->status |= V4L2_IN_ST_NO_SIGNAL; |
1028 | if (vi->status & VIDEO_STATUS_NO_COLOR) |
1029 | input->status |= V4L2_IN_ST_NO_COLOR; |
1030 | if (vi->status & VIDEO_STATUS_NO_HLOCK) |
1031 | input->status |= V4L2_IN_ST_NO_H_LOCK; |
1032 | if (vi->status & VIDEO_STATUS_MACROVISION) |
1033 | input->status |= V4L2_IN_ST_MACROVISION; |
1034 | } |
1035 | |
1036 | static int |
1037 | video_enum_input(struct video_softc *sc, struct v4l2_input *input) |
1038 | { |
1039 | const struct video_hw_if *hw = sc->hw_if; |
1040 | struct video_input vi; |
1041 | int err; |
1042 | |
1043 | /* simple webcam drivers don't need to implement this callback */ |
1044 | if (hw->enum_input == NULL) { |
1045 | if (input->index != 0) |
1046 | return EINVAL; |
1047 | memset(input, 0, sizeof(*input)); |
1048 | input->index = 0; |
1049 | strlcpy(input->name, "Camera" , sizeof(input->name)); |
1050 | input->type = V4L2_INPUT_TYPE_CAMERA; |
1051 | return 0; |
1052 | } |
1053 | |
1054 | v4l2_input_to_video_input(input, &vi); |
1055 | |
1056 | err = hw->enum_input(sc->hw_softc, input->index, &vi); |
1057 | if (err != 0) |
1058 | return err; |
1059 | |
1060 | video_input_to_v4l2_input(&vi, input); |
1061 | |
1062 | return 0; |
1063 | } |
1064 | |
1065 | static int |
1066 | video_get_input(struct video_softc *sc, int *index) |
1067 | { |
1068 | const struct video_hw_if *hw = sc->hw_if; |
1069 | struct video_input vi; |
1070 | struct v4l2_input input; |
1071 | int err; |
1072 | |
1073 | /* simple webcam drivers don't need to implement this callback */ |
1074 | if (hw->get_input == NULL) { |
1075 | *index = 0; |
1076 | return 0; |
1077 | } |
1078 | |
1079 | input.index = *index; |
1080 | v4l2_input_to_video_input(&input, &vi); |
1081 | |
1082 | err = hw->get_input(sc->hw_softc, &vi); |
1083 | if (err != 0) |
1084 | return err; |
1085 | |
1086 | video_input_to_v4l2_input(&vi, &input); |
1087 | *index = input.index; |
1088 | |
1089 | return 0; |
1090 | } |
1091 | |
1092 | static int |
1093 | video_set_input(struct video_softc *sc, int index) |
1094 | { |
1095 | const struct video_hw_if *hw = sc->hw_if; |
1096 | struct video_input vi; |
1097 | struct v4l2_input input; |
1098 | |
1099 | /* simple webcam drivers don't need to implement this callback */ |
1100 | if (hw->set_input == NULL) { |
1101 | if (index != 0) |
1102 | return EINVAL; |
1103 | return 0; |
1104 | } |
1105 | |
1106 | input.index = index; |
1107 | v4l2_input_to_video_input(&input, &vi); |
1108 | |
1109 | return hw->set_input(sc->hw_softc, &vi); |
1110 | } |
1111 | |
1112 | static void |
1113 | v4l2_audio_to_video_audio(const struct v4l2_audio *audio, |
1114 | struct video_audio *va) |
1115 | { |
1116 | va->index = audio->index; |
1117 | strlcpy(va->name, audio->name, sizeof(va->name)); |
1118 | va->caps = va->mode = 0; |
1119 | if (audio->capability & V4L2_AUDCAP_STEREO) |
1120 | va->caps |= VIDEO_AUDIO_F_STEREO; |
1121 | if (audio->capability & V4L2_AUDCAP_AVL) |
1122 | va->caps |= VIDEO_AUDIO_F_AVL; |
1123 | if (audio->mode & V4L2_AUDMODE_AVL) |
1124 | va->mode |= VIDEO_AUDIO_F_AVL; |
1125 | } |
1126 | |
1127 | static void |
1128 | video_audio_to_v4l2_audio(const struct video_audio *va, |
1129 | struct v4l2_audio *audio) |
1130 | { |
1131 | audio->index = va->index; |
1132 | strlcpy(audio->name, va->name, sizeof(audio->name)); |
1133 | audio->capability = audio->mode = 0; |
1134 | if (va->caps & VIDEO_AUDIO_F_STEREO) |
1135 | audio->capability |= V4L2_AUDCAP_STEREO; |
1136 | if (va->caps & VIDEO_AUDIO_F_AVL) |
1137 | audio->capability |= V4L2_AUDCAP_AVL; |
1138 | if (va->mode & VIDEO_AUDIO_F_AVL) |
1139 | audio->mode |= V4L2_AUDMODE_AVL; |
1140 | } |
1141 | |
1142 | static int |
1143 | video_enum_audio(struct video_softc *sc, struct v4l2_audio *audio) |
1144 | { |
1145 | const struct video_hw_if *hw = sc->hw_if; |
1146 | struct video_audio va; |
1147 | int err; |
1148 | |
1149 | if (hw->enum_audio == NULL) |
1150 | return ENOTTY; |
1151 | |
1152 | v4l2_audio_to_video_audio(audio, &va); |
1153 | |
1154 | err = hw->enum_audio(sc->hw_softc, audio->index, &va); |
1155 | if (err != 0) |
1156 | return err; |
1157 | |
1158 | video_audio_to_v4l2_audio(&va, audio); |
1159 | |
1160 | return 0; |
1161 | } |
1162 | |
1163 | static int |
1164 | video_get_audio(struct video_softc *sc, struct v4l2_audio *audio) |
1165 | { |
1166 | const struct video_hw_if *hw = sc->hw_if; |
1167 | struct video_audio va; |
1168 | int err; |
1169 | |
1170 | if (hw->get_audio == NULL) |
1171 | return ENOTTY; |
1172 | |
1173 | v4l2_audio_to_video_audio(audio, &va); |
1174 | |
1175 | err = hw->get_audio(sc->hw_softc, &va); |
1176 | if (err != 0) |
1177 | return err; |
1178 | |
1179 | video_audio_to_v4l2_audio(&va, audio); |
1180 | |
1181 | return 0; |
1182 | } |
1183 | |
1184 | static int |
1185 | video_set_audio(struct video_softc *sc, struct v4l2_audio *audio) |
1186 | { |
1187 | const struct video_hw_if *hw = sc->hw_if; |
1188 | struct video_audio va; |
1189 | |
1190 | if (hw->set_audio == NULL) |
1191 | return ENOTTY; |
1192 | |
1193 | v4l2_audio_to_video_audio(audio, &va); |
1194 | |
1195 | return hw->set_audio(sc->hw_softc, &va); |
1196 | } |
1197 | |
1198 | static void |
1199 | v4l2_tuner_to_video_tuner(const struct v4l2_tuner *tuner, |
1200 | struct video_tuner *vt) |
1201 | { |
1202 | vt->index = tuner->index; |
1203 | strlcpy(vt->name, tuner->name, sizeof(vt->name)); |
1204 | vt->freq_lo = tuner->rangelow; |
1205 | vt->freq_hi = tuner->rangehigh; |
1206 | vt->signal = tuner->signal; |
1207 | vt->afc = tuner->afc; |
1208 | vt->caps = 0; |
1209 | if (tuner->capability & V4L2_TUNER_CAP_STEREO) |
1210 | vt->caps |= VIDEO_TUNER_F_STEREO; |
1211 | if (tuner->capability & V4L2_TUNER_CAP_LANG1) |
1212 | vt->caps |= VIDEO_TUNER_F_LANG1; |
1213 | if (tuner->capability & V4L2_TUNER_CAP_LANG2) |
1214 | vt->caps |= VIDEO_TUNER_F_LANG2; |
1215 | switch (tuner->audmode) { |
1216 | case V4L2_TUNER_MODE_MONO: |
1217 | vt->mode = VIDEO_TUNER_F_MONO; |
1218 | break; |
1219 | case V4L2_TUNER_MODE_STEREO: |
1220 | vt->mode = VIDEO_TUNER_F_STEREO; |
1221 | break; |
1222 | case V4L2_TUNER_MODE_LANG1: |
1223 | vt->mode = VIDEO_TUNER_F_LANG1; |
1224 | break; |
1225 | case V4L2_TUNER_MODE_LANG2: |
1226 | vt->mode = VIDEO_TUNER_F_LANG2; |
1227 | break; |
1228 | case V4L2_TUNER_MODE_LANG1_LANG2: |
1229 | vt->mode = VIDEO_TUNER_F_LANG1 | VIDEO_TUNER_F_LANG2; |
1230 | break; |
1231 | } |
1232 | } |
1233 | |
1234 | static void |
1235 | video_tuner_to_v4l2_tuner(const struct video_tuner *vt, |
1236 | struct v4l2_tuner *tuner) |
1237 | { |
1238 | tuner->index = vt->index; |
1239 | strlcpy(tuner->name, vt->name, sizeof(tuner->name)); |
1240 | tuner->rangelow = vt->freq_lo; |
1241 | tuner->rangehigh = vt->freq_hi; |
1242 | tuner->signal = vt->signal; |
1243 | tuner->afc = vt->afc; |
1244 | tuner->capability = 0; |
1245 | if (vt->caps & VIDEO_TUNER_F_STEREO) |
1246 | tuner->capability |= V4L2_TUNER_CAP_STEREO; |
1247 | if (vt->caps & VIDEO_TUNER_F_LANG1) |
1248 | tuner->capability |= V4L2_TUNER_CAP_LANG1; |
1249 | if (vt->caps & VIDEO_TUNER_F_LANG2) |
1250 | tuner->capability |= V4L2_TUNER_CAP_LANG2; |
1251 | switch (vt->mode) { |
1252 | case VIDEO_TUNER_F_MONO: |
1253 | tuner->audmode = V4L2_TUNER_MODE_MONO; |
1254 | break; |
1255 | case VIDEO_TUNER_F_STEREO: |
1256 | tuner->audmode = V4L2_TUNER_MODE_STEREO; |
1257 | break; |
1258 | case VIDEO_TUNER_F_LANG1: |
1259 | tuner->audmode = V4L2_TUNER_MODE_LANG1; |
1260 | break; |
1261 | case VIDEO_TUNER_F_LANG2: |
1262 | tuner->audmode = V4L2_TUNER_MODE_LANG2; |
1263 | break; |
1264 | case VIDEO_TUNER_F_LANG1|VIDEO_TUNER_F_LANG2: |
1265 | tuner->audmode = V4L2_TUNER_MODE_LANG1_LANG2; |
1266 | break; |
1267 | } |
1268 | } |
1269 | |
1270 | static int |
1271 | video_get_tuner(struct video_softc *sc, struct v4l2_tuner *tuner) |
1272 | { |
1273 | const struct video_hw_if *hw = sc->hw_if; |
1274 | struct video_tuner vt; |
1275 | int err; |
1276 | |
1277 | if (hw->get_tuner == NULL) |
1278 | return ENOTTY; |
1279 | |
1280 | v4l2_tuner_to_video_tuner(tuner, &vt); |
1281 | |
1282 | err = hw->get_tuner(sc->hw_softc, &vt); |
1283 | if (err != 0) |
1284 | return err; |
1285 | |
1286 | video_tuner_to_v4l2_tuner(&vt, tuner); |
1287 | |
1288 | return 0; |
1289 | } |
1290 | |
1291 | static int |
1292 | video_set_tuner(struct video_softc *sc, struct v4l2_tuner *tuner) |
1293 | { |
1294 | const struct video_hw_if *hw = sc->hw_if; |
1295 | struct video_tuner vt; |
1296 | |
1297 | if (hw->set_tuner == NULL) |
1298 | return ENOTTY; |
1299 | |
1300 | v4l2_tuner_to_video_tuner(tuner, &vt); |
1301 | |
1302 | return hw->set_tuner(sc->hw_softc, &vt); |
1303 | } |
1304 | |
1305 | static int |
1306 | video_get_frequency(struct video_softc *sc, struct v4l2_frequency *freq) |
1307 | { |
1308 | const struct video_hw_if *hw = sc->hw_if; |
1309 | struct video_frequency vfreq; |
1310 | int err; |
1311 | |
1312 | if (hw->get_frequency == NULL) |
1313 | return ENOTTY; |
1314 | |
1315 | err = hw->get_frequency(sc->hw_softc, &vfreq); |
1316 | if (err) |
1317 | return err; |
1318 | |
1319 | freq->tuner = vfreq.tuner_index; |
1320 | freq->type = V4L2_TUNER_ANALOG_TV; |
1321 | freq->frequency = vfreq.frequency; |
1322 | |
1323 | return 0; |
1324 | } |
1325 | |
1326 | static int |
1327 | video_set_frequency(struct video_softc *sc, struct v4l2_frequency *freq) |
1328 | { |
1329 | const struct video_hw_if *hw = sc->hw_if; |
1330 | struct video_frequency vfreq; |
1331 | struct video_tuner vt; |
1332 | int error; |
1333 | |
1334 | if (hw->set_frequency == NULL || hw->get_tuner == NULL) |
1335 | return ENOTTY; |
1336 | if (freq->type != V4L2_TUNER_ANALOG_TV) |
1337 | return EINVAL; |
1338 | |
1339 | vt.index = freq->tuner; |
1340 | error = hw->get_tuner(sc->hw_softc, &vt); |
1341 | if (error) |
1342 | return error; |
1343 | |
1344 | if (freq->frequency < vt.freq_lo) |
1345 | freq->frequency = vt.freq_lo; |
1346 | else if (freq->frequency > vt.freq_hi) |
1347 | freq->frequency = vt.freq_hi; |
1348 | |
1349 | vfreq.tuner_index = freq->tuner; |
1350 | vfreq.frequency = freq->frequency; |
1351 | |
1352 | return hw->set_frequency(sc->hw_softc, &vfreq); |
1353 | } |
1354 | |
1355 | /* Takes a single Video4Linux2 control, converts it to a struct |
1356 | * video_control, and calls the hardware driver. */ |
1357 | static int |
1358 | video_set_control(struct video_softc *sc, |
1359 | const struct v4l2_control *vcontrol) |
1360 | { |
1361 | const struct video_hw_if *hw; |
1362 | struct video_control_group group; |
1363 | struct video_control control; |
1364 | |
1365 | hw = sc->hw_if; |
1366 | if (hw->set_control_group) { |
1367 | control.group_id = control.control_id = |
1368 | v4l2id_to_control_id(vcontrol->id); |
1369 | /* ?? if "control_id" is arbitrarily defined by the |
1370 | * driver, then we need some way to store it... Maybe |
1371 | * it doesn't matter for single value controls. */ |
1372 | control.value = vcontrol->value; |
1373 | |
1374 | group.group_id = control.group_id; |
1375 | group.length = 1; |
1376 | group.control = &control; |
1377 | |
1378 | return (hw->set_control_group(sc->hw_softc, &group)); |
1379 | } else { |
1380 | return EINVAL; |
1381 | } |
1382 | } |
1383 | |
1384 | static int |
1385 | video_request_bufs(struct video_softc *sc, |
1386 | struct v4l2_requestbuffers *req) |
1387 | { |
1388 | struct video_stream *vs = &sc->sc_stream_in; |
1389 | struct v4l2_buffer *buf; |
1390 | int i, err; |
1391 | |
1392 | if (req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1393 | return EINVAL; |
1394 | |
1395 | vs->vs_type = req->type; |
1396 | |
1397 | switch (req->memory) { |
1398 | case V4L2_MEMORY_MMAP: |
1399 | if (req->count < VIDEO_MIN_BUFS) |
1400 | req->count = VIDEO_MIN_BUFS; |
1401 | else if (req->count > VIDEO_MAX_BUFS) |
1402 | req->count = VIDEO_MAX_BUFS; |
1403 | |
1404 | err = video_stream_setup_bufs(vs, |
1405 | VIDEO_STREAM_METHOD_MMAP, |
1406 | req->count); |
1407 | if (err != 0) |
1408 | return err; |
1409 | |
1410 | for (i = 0; i < req->count; ++i) { |
1411 | buf = vs->vs_buf[i]->vb_buf; |
1412 | buf->memory = V4L2_MEMORY_MMAP; |
1413 | buf->flags |= V4L2_BUF_FLAG_MAPPED; |
1414 | } |
1415 | break; |
1416 | case V4L2_MEMORY_USERPTR: |
1417 | default: |
1418 | return EINVAL; |
1419 | } |
1420 | |
1421 | return 0; |
1422 | } |
1423 | |
1424 | static int |
1425 | video_query_buf(struct video_softc *sc, |
1426 | struct v4l2_buffer *buf) |
1427 | { |
1428 | struct video_stream *vs = &sc->sc_stream_in; |
1429 | |
1430 | if (buf->type != vs->vs_type) |
1431 | return EINVAL; |
1432 | if (buf->index >= vs->vs_nbufs) |
1433 | return EINVAL; |
1434 | |
1435 | memcpy(buf, vs->vs_buf[buf->index]->vb_buf, sizeof(*buf)); |
1436 | |
1437 | return 0; |
1438 | } |
1439 | |
1440 | /* Accept a buffer descriptor from userspace and return the indicated |
1441 | * buffer to the driver's queue. */ |
1442 | static int |
1443 | video_queue_buf(struct video_softc *sc, struct v4l2_buffer *userbuf) |
1444 | { |
1445 | struct video_stream *vs = &sc->sc_stream_in; |
1446 | struct video_buffer *vb; |
1447 | struct v4l2_buffer *driverbuf; |
1448 | |
1449 | if (userbuf->type != vs->vs_type) { |
1450 | DPRINTF(("video_queue_buf: expected type=%d got type=%d\n" , |
1451 | userbuf->type, vs->vs_type)); |
1452 | return EINVAL; |
1453 | } |
1454 | if (userbuf->index >= vs->vs_nbufs) { |
1455 | DPRINTF(("video_queue_buf: invalid index %d >= %d\n" , |
1456 | userbuf->index, vs->vs_nbufs)); |
1457 | return EINVAL; |
1458 | } |
1459 | |
1460 | switch (vs->vs_method) { |
1461 | case VIDEO_STREAM_METHOD_MMAP: |
1462 | if (userbuf->memory != V4L2_MEMORY_MMAP) { |
1463 | DPRINTF(("video_queue_buf: invalid memory=%d\n" , |
1464 | userbuf->memory)); |
1465 | return EINVAL; |
1466 | } |
1467 | |
1468 | mutex_enter(&vs->vs_lock); |
1469 | |
1470 | vb = vs->vs_buf[userbuf->index]; |
1471 | driverbuf = vb->vb_buf; |
1472 | if (driverbuf->flags & V4L2_BUF_FLAG_QUEUED) { |
1473 | DPRINTF(("video_queue_buf: buf already queued; " |
1474 | "flags=0x%x\n" , driverbuf->flags)); |
1475 | mutex_exit(&vs->vs_lock); |
1476 | return EINVAL; |
1477 | } |
1478 | video_stream_enqueue(vs, vb); |
1479 | memcpy(userbuf, driverbuf, sizeof(*driverbuf)); |
1480 | |
1481 | mutex_exit(&vs->vs_lock); |
1482 | break; |
1483 | default: |
1484 | return EINVAL; |
1485 | } |
1486 | |
1487 | return 0; |
1488 | } |
1489 | |
1490 | /* Dequeue the described buffer from the driver queue, making it |
1491 | * available for reading via mmap. */ |
1492 | static int |
1493 | video_dequeue_buf(struct video_softc *sc, struct v4l2_buffer *buf) |
1494 | { |
1495 | struct video_stream *vs = &sc->sc_stream_in; |
1496 | struct video_buffer *vb; |
1497 | int err; |
1498 | |
1499 | if (buf->type != vs->vs_type) { |
1500 | aprint_debug_dev(sc->sc_dev, |
1501 | "requested type %d (expected %d)\n" , |
1502 | buf->type, vs->vs_type); |
1503 | return EINVAL; |
1504 | } |
1505 | |
1506 | switch (vs->vs_method) { |
1507 | case VIDEO_STREAM_METHOD_MMAP: |
1508 | if (buf->memory != V4L2_MEMORY_MMAP) { |
1509 | aprint_debug_dev(sc->sc_dev, |
1510 | "requested memory %d (expected %d)\n" , |
1511 | buf->memory, V4L2_MEMORY_MMAP); |
1512 | return EINVAL; |
1513 | } |
1514 | |
1515 | mutex_enter(&vs->vs_lock); |
1516 | |
1517 | if (vs->vs_flags & O_NONBLOCK) { |
1518 | vb = video_stream_dequeue(vs); |
1519 | if (vb == NULL) { |
1520 | mutex_exit(&vs->vs_lock); |
1521 | return EAGAIN; |
1522 | } |
1523 | } else { |
1524 | /* Block until we have sample */ |
1525 | while ((vb = video_stream_dequeue(vs)) == NULL) { |
1526 | if (!vs->vs_streaming) { |
1527 | mutex_exit(&vs->vs_lock); |
1528 | return EINVAL; |
1529 | } |
1530 | err = cv_wait_sig(&vs->vs_sample_cv, |
1531 | &vs->vs_lock); |
1532 | if (err != 0) { |
1533 | mutex_exit(&vs->vs_lock); |
1534 | return EINTR; |
1535 | } |
1536 | } |
1537 | } |
1538 | |
1539 | memcpy(buf, vb->vb_buf, sizeof(*buf)); |
1540 | |
1541 | mutex_exit(&vs->vs_lock); |
1542 | break; |
1543 | default: |
1544 | aprint_debug_dev(sc->sc_dev, "unknown vs_method %d\n" , |
1545 | vs->vs_method); |
1546 | return EINVAL; |
1547 | } |
1548 | |
1549 | return 0; |
1550 | } |
1551 | |
1552 | static int |
1553 | video_stream_on(struct video_softc *sc, enum v4l2_buf_type type) |
1554 | { |
1555 | int err; |
1556 | struct video_stream *vs = &sc->sc_stream_in; |
1557 | const struct video_hw_if *hw; |
1558 | |
1559 | if (vs->vs_streaming) |
1560 | return 0; |
1561 | if (type != vs->vs_type) |
1562 | return EINVAL; |
1563 | |
1564 | hw = sc->hw_if; |
1565 | if (hw == NULL) |
1566 | return ENXIO; |
1567 | |
1568 | |
1569 | err = hw->start_transfer(sc->hw_softc); |
1570 | if (err != 0) |
1571 | return err; |
1572 | |
1573 | vs->vs_streaming = true; |
1574 | return 0; |
1575 | } |
1576 | |
1577 | static int |
1578 | video_stream_off(struct video_softc *sc, enum v4l2_buf_type type) |
1579 | { |
1580 | int err; |
1581 | struct video_stream *vs = &sc->sc_stream_in; |
1582 | const struct video_hw_if *hw; |
1583 | |
1584 | if (!vs->vs_streaming) |
1585 | return 0; |
1586 | if (type != vs->vs_type) |
1587 | return EINVAL; |
1588 | |
1589 | hw = sc->hw_if; |
1590 | if (hw == NULL) |
1591 | return ENXIO; |
1592 | |
1593 | err = hw->stop_transfer(sc->hw_softc); |
1594 | if (err != 0) |
1595 | return err; |
1596 | |
1597 | vs->vs_frameno = -1; |
1598 | vs->vs_sequence = 0; |
1599 | vs->vs_streaming = false; |
1600 | |
1601 | return 0; |
1602 | } |
1603 | |
1604 | int |
1605 | videoopen(dev_t dev, int flags, int ifmt, struct lwp *l) |
1606 | { |
1607 | struct video_softc *sc; |
1608 | const struct video_hw_if *hw; |
1609 | struct video_stream *vs; |
1610 | int err; |
1611 | |
1612 | DPRINTF(("videoopen\n" )); |
1613 | |
1614 | sc = device_private(device_lookup(&video_cd, VIDEOUNIT(dev))); |
1615 | if (sc == NULL) { |
1616 | DPRINTF(("videoopen: failed to get softc for unit %d\n" , |
1617 | VIDEOUNIT(dev))); |
1618 | return ENXIO; |
1619 | } |
1620 | |
1621 | if (sc->sc_dying) { |
1622 | DPRINTF(("videoopen: dying\n" )); |
1623 | return EIO; |
1624 | } |
1625 | |
1626 | sc->sc_stream_in.vs_flags = flags; |
1627 | |
1628 | DPRINTF(("videoopen: flags=0x%x sc=%p parent=%p\n" , |
1629 | flags, sc, sc->hw_dev)); |
1630 | |
1631 | hw = sc->hw_if; |
1632 | if (hw == NULL) |
1633 | return ENXIO; |
1634 | |
1635 | device_active(sc->sc_dev, DVA_SYSTEM); |
1636 | |
1637 | sc->sc_opencnt++; |
1638 | |
1639 | if (hw->open != NULL) { |
1640 | err = hw->open(sc->hw_softc, flags); |
1641 | if (err) |
1642 | return err; |
1643 | } |
1644 | |
1645 | /* set up input stream. TODO: check flags to determine if |
1646 | * "read" is desired? */ |
1647 | vs = &sc->sc_stream_in; |
1648 | |
1649 | if (hw->get_format != NULL) { |
1650 | err = hw->get_format(sc->hw_softc, &vs->vs_format); |
1651 | if (err != 0) |
1652 | return err; |
1653 | } |
1654 | return 0; |
1655 | } |
1656 | |
1657 | |
1658 | int |
1659 | videoclose(dev_t dev, int flags, int ifmt, struct lwp *l) |
1660 | { |
1661 | struct video_softc *sc; |
1662 | const struct video_hw_if *hw; |
1663 | |
1664 | sc = device_private(device_lookup(&video_cd, VIDEOUNIT(dev))); |
1665 | if (sc == NULL) |
1666 | return ENXIO; |
1667 | |
1668 | DPRINTF(("videoclose: sc=%p\n" , sc)); |
1669 | |
1670 | hw = sc->hw_if; |
1671 | if (hw == NULL) |
1672 | return ENXIO; |
1673 | |
1674 | device_active(sc->sc_dev, DVA_SYSTEM); |
1675 | |
1676 | video_stream_off(sc, sc->sc_stream_in.vs_type); |
1677 | |
1678 | /* ignore error */ |
1679 | if (hw->close != NULL) |
1680 | hw->close(sc->hw_softc); |
1681 | |
1682 | video_stream_teardown_bufs(&sc->sc_stream_in); |
1683 | |
1684 | sc->sc_open = 0; |
1685 | sc->sc_opencnt--; |
1686 | |
1687 | return 0; |
1688 | } |
1689 | |
1690 | |
1691 | int |
1692 | videoread(dev_t dev, struct uio *uio, int ioflag) |
1693 | { |
1694 | struct video_softc *sc; |
1695 | struct video_stream *vs; |
1696 | struct video_buffer *vb; |
1697 | struct scatter_io sio; |
1698 | int err; |
1699 | size_t len; |
1700 | off_t offset; |
1701 | |
1702 | sc = device_private(device_lookup(&video_cd, VIDEOUNIT(dev))); |
1703 | if (sc == NULL) |
1704 | return ENXIO; |
1705 | |
1706 | if (sc->sc_dying) |
1707 | return EIO; |
1708 | |
1709 | vs = &sc->sc_stream_in; |
1710 | |
1711 | /* userspace has chosen read() method */ |
1712 | if (vs->vs_method == VIDEO_STREAM_METHOD_NONE) { |
1713 | err = video_stream_setup_bufs(vs, |
1714 | VIDEO_STREAM_METHOD_READ, |
1715 | VIDEO_NUM_BUFS); |
1716 | if (err != 0) |
1717 | return err; |
1718 | |
1719 | err = video_stream_on(sc, vs->vs_type); |
1720 | if (err != 0) |
1721 | return err; |
1722 | } else if (vs->vs_method != VIDEO_STREAM_METHOD_READ) { |
1723 | return EBUSY; |
1724 | } |
1725 | |
1726 | mutex_enter(&vs->vs_lock); |
1727 | |
1728 | retry: |
1729 | if (SIMPLEQ_EMPTY(&vs->vs_egress)) { |
1730 | if (vs->vs_flags & O_NONBLOCK) { |
1731 | mutex_exit(&vs->vs_lock); |
1732 | return EAGAIN; |
1733 | } |
1734 | |
1735 | /* Block until we have a sample */ |
1736 | while (SIMPLEQ_EMPTY(&vs->vs_egress)) { |
1737 | err = cv_wait_sig(&vs->vs_sample_cv, |
1738 | &vs->vs_lock); |
1739 | if (err != 0) { |
1740 | mutex_exit(&vs->vs_lock); |
1741 | return EINTR; |
1742 | } |
1743 | } |
1744 | |
1745 | vb = SIMPLEQ_FIRST(&vs->vs_egress); |
1746 | } else { |
1747 | vb = SIMPLEQ_FIRST(&vs->vs_egress); |
1748 | } |
1749 | |
1750 | /* Oops, empty sample buffer. */ |
1751 | if (vb->vb_buf->bytesused == 0) { |
1752 | vb = video_stream_dequeue(vs); |
1753 | video_stream_enqueue(vs, vb); |
1754 | vs->vs_bytesread = 0; |
1755 | goto retry; |
1756 | } |
1757 | |
1758 | mutex_exit(&vs->vs_lock); |
1759 | |
1760 | len = min(uio->uio_resid, vb->vb_buf->bytesused - vs->vs_bytesread); |
1761 | offset = vb->vb_buf->m.offset + vs->vs_bytesread; |
1762 | |
1763 | if (scatter_io_init(&vs->vs_data, offset, len, &sio)) { |
1764 | err = scatter_io_uiomove(&sio, uio); |
1765 | if (err == EFAULT) |
1766 | return EFAULT; |
1767 | vs->vs_bytesread += (len - sio.sio_resid); |
1768 | } else { |
1769 | DPRINTF(("video: invalid read\n" )); |
1770 | } |
1771 | |
1772 | /* Move the sample to the ingress queue if everything has |
1773 | * been read */ |
1774 | if (vs->vs_bytesread >= vb->vb_buf->bytesused) { |
1775 | mutex_enter(&vs->vs_lock); |
1776 | vb = video_stream_dequeue(vs); |
1777 | video_stream_enqueue(vs, vb); |
1778 | mutex_exit(&vs->vs_lock); |
1779 | |
1780 | vs->vs_bytesread = 0; |
1781 | } |
1782 | |
1783 | return 0; |
1784 | } |
1785 | |
1786 | |
1787 | int |
1788 | videowrite(dev_t dev, struct uio *uio, int ioflag) |
1789 | { |
1790 | return ENXIO; |
1791 | } |
1792 | |
1793 | |
1794 | /* |
1795 | * Before 64-bit time_t, timeval's tv_sec was 'long'. Thus on LP64 ports |
1796 | * v4l2_buffer is the same size and layout as before. However it did change |
1797 | * on LP32 ports, and we thus handle this difference here for "COMPAT_50". |
1798 | */ |
1799 | |
1800 | #ifndef _LP64 |
1801 | static void |
1802 | buf50tobuf(const void *data, struct v4l2_buffer *buf) |
1803 | { |
1804 | const struct v4l2_buffer50 *b50 = data; |
1805 | |
1806 | buf->index = b50->index; |
1807 | buf->type = b50->type; |
1808 | buf->bytesused = b50->bytesused; |
1809 | buf->flags = b50->flags; |
1810 | buf->field = b50->field; |
1811 | timeval50_to_timeval(&b50->timestamp, &buf->timestamp); |
1812 | buf->timecode = b50->timecode; |
1813 | buf->sequence = b50->sequence; |
1814 | buf->memory = b50->memory; |
1815 | buf->m.offset = b50->m.offset; |
1816 | /* XXX: Handle userptr */ |
1817 | buf->length = b50->length; |
1818 | buf->input = b50->input; |
1819 | buf->reserved = b50->reserved; |
1820 | } |
1821 | |
1822 | static void |
1823 | buftobuf50(void *data, const struct v4l2_buffer *buf) |
1824 | { |
1825 | struct v4l2_buffer50 *b50 = data; |
1826 | |
1827 | b50->index = buf->index; |
1828 | b50->type = buf->type; |
1829 | b50->bytesused = buf->bytesused; |
1830 | b50->flags = buf->flags; |
1831 | b50->field = buf->field; |
1832 | timeval_to_timeval50(&buf->timestamp, &b50->timestamp); |
1833 | b50->timecode = buf->timecode; |
1834 | b50->sequence = buf->sequence; |
1835 | b50->memory = buf->memory; |
1836 | b50->m.offset = buf->m.offset; |
1837 | /* XXX: Handle userptr */ |
1838 | b50->length = buf->length; |
1839 | b50->input = buf->input; |
1840 | b50->reserved = buf->reserved; |
1841 | } |
1842 | #endif |
1843 | |
1844 | int |
1845 | videoioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) |
1846 | { |
1847 | struct video_softc *sc; |
1848 | const struct video_hw_if *hw; |
1849 | struct v4l2_capability *cap; |
1850 | struct v4l2_fmtdesc *fmtdesc; |
1851 | struct v4l2_format *fmt; |
1852 | struct v4l2_standard *std; |
1853 | struct v4l2_input *input; |
1854 | struct v4l2_audio *audio; |
1855 | struct v4l2_tuner *tuner; |
1856 | struct v4l2_frequency *freq; |
1857 | struct v4l2_control *control; |
1858 | struct v4l2_queryctrl *query; |
1859 | struct v4l2_requestbuffers *reqbufs; |
1860 | struct v4l2_buffer *buf; |
1861 | v4l2_std_id *stdid; |
1862 | enum v4l2_buf_type *typep; |
1863 | int *ip; |
1864 | #ifndef _LP64 |
1865 | struct v4l2_buffer bufspace; |
1866 | int error; |
1867 | #endif |
1868 | |
1869 | sc = device_private(device_lookup(&video_cd, VIDEOUNIT(dev))); |
1870 | |
1871 | if (sc->sc_dying) |
1872 | return EIO; |
1873 | |
1874 | hw = sc->hw_if; |
1875 | if (hw == NULL) |
1876 | return ENXIO; |
1877 | |
1878 | switch (cmd) { |
1879 | case VIDIOC_QUERYCAP: |
1880 | cap = data; |
1881 | memset(cap, 0, sizeof(*cap)); |
1882 | strlcpy(cap->driver, |
1883 | device_cfdriver(sc->hw_dev)->cd_name, |
1884 | sizeof(cap->driver)); |
1885 | strlcpy(cap->card, hw->get_devname(sc->hw_softc), |
1886 | sizeof(cap->card)); |
1887 | strlcpy(cap->bus_info, hw->get_businfo(sc->hw_softc), |
1888 | sizeof(cap->bus_info)); |
1889 | cap->version = VIDEO_DRIVER_VERSION; |
1890 | cap->capabilities = 0; |
1891 | if (hw->start_transfer != NULL && hw->stop_transfer != NULL) |
1892 | cap->capabilities |= V4L2_CAP_VIDEO_CAPTURE | |
1893 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; |
1894 | if (hw->set_tuner != NULL && hw->get_tuner != NULL) |
1895 | cap->capabilities |= V4L2_CAP_TUNER; |
1896 | if (hw->set_audio != NULL && hw->get_audio != NULL && |
1897 | hw->enum_audio != NULL) |
1898 | cap->capabilities |= V4L2_CAP_AUDIO; |
1899 | return 0; |
1900 | case VIDIOC_ENUM_FMT: |
1901 | /* TODO: for now, just enumerate one default format */ |
1902 | fmtdesc = data; |
1903 | if (fmtdesc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1904 | return EINVAL; |
1905 | return video_enum_format(sc, fmtdesc); |
1906 | case VIDIOC_G_FMT: |
1907 | fmt = data; |
1908 | return video_get_format(sc, fmt); |
1909 | case VIDIOC_S_FMT: |
1910 | fmt = data; |
1911 | if ((flag & FWRITE) == 0) |
1912 | return EPERM; |
1913 | return video_set_format(sc, fmt); |
1914 | case VIDIOC_TRY_FMT: |
1915 | fmt = data; |
1916 | return video_try_format(sc, fmt); |
1917 | case VIDIOC_ENUMSTD: |
1918 | std = data; |
1919 | return video_enum_standard(sc, std); |
1920 | case VIDIOC_G_STD: |
1921 | stdid = data; |
1922 | return video_get_standard(sc, stdid); |
1923 | case VIDIOC_S_STD: |
1924 | stdid = data; |
1925 | if ((flag & FWRITE) == 0) |
1926 | return EPERM; |
1927 | return video_set_standard(sc, *stdid); |
1928 | case VIDIOC_ENUMINPUT: |
1929 | input = data; |
1930 | return video_enum_input(sc, input); |
1931 | case VIDIOC_G_INPUT: |
1932 | ip = data; |
1933 | return video_get_input(sc, ip); |
1934 | case VIDIOC_S_INPUT: |
1935 | ip = data; |
1936 | if ((flag & FWRITE) == 0) |
1937 | return EPERM; |
1938 | return video_set_input(sc, *ip); |
1939 | case VIDIOC_ENUMAUDIO: |
1940 | audio = data; |
1941 | return video_enum_audio(sc, audio); |
1942 | case VIDIOC_G_AUDIO: |
1943 | audio = data; |
1944 | return video_get_audio(sc, audio); |
1945 | case VIDIOC_S_AUDIO: |
1946 | audio = data; |
1947 | if ((flag & FWRITE) == 0) |
1948 | return EPERM; |
1949 | return video_set_audio(sc, audio); |
1950 | case VIDIOC_G_TUNER: |
1951 | tuner = data; |
1952 | return video_get_tuner(sc, tuner); |
1953 | case VIDIOC_S_TUNER: |
1954 | tuner = data; |
1955 | if ((flag & FWRITE) == 0) |
1956 | return EPERM; |
1957 | return video_set_tuner(sc, tuner); |
1958 | case VIDIOC_G_FREQUENCY: |
1959 | freq = data; |
1960 | return video_get_frequency(sc, freq); |
1961 | case VIDIOC_S_FREQUENCY: |
1962 | freq = data; |
1963 | if ((flag & FWRITE) == 0) |
1964 | return EPERM; |
1965 | return video_set_frequency(sc, freq); |
1966 | case VIDIOC_QUERYCTRL: |
1967 | query = data; |
1968 | return (video_query_control(sc, query)); |
1969 | case VIDIOC_G_CTRL: |
1970 | control = data; |
1971 | return (video_get_control(sc, control)); |
1972 | case VIDIOC_S_CTRL: |
1973 | control = data; |
1974 | if ((flag & FWRITE) == 0) |
1975 | return EPERM; |
1976 | return (video_set_control(sc, control)); |
1977 | case VIDIOC_REQBUFS: |
1978 | reqbufs = data; |
1979 | return (video_request_bufs(sc, reqbufs)); |
1980 | case VIDIOC_QUERYBUF: |
1981 | buf = data; |
1982 | return video_query_buf(sc, buf); |
1983 | #ifndef _LP64 |
1984 | case VIDIOC_QUERYBUF50: |
1985 | buf50tobuf(data, buf = &bufspace); |
1986 | if ((error = video_query_buf(sc, buf)) != 0) |
1987 | return error; |
1988 | buftobuf50(data, buf); |
1989 | return 0; |
1990 | #endif |
1991 | case VIDIOC_QBUF: |
1992 | buf = data; |
1993 | return video_queue_buf(sc, buf); |
1994 | #ifndef _LP64 |
1995 | case VIDIOC_QBUF50: |
1996 | buf50tobuf(data, buf = &bufspace); |
1997 | return video_queue_buf(sc, buf); |
1998 | #endif |
1999 | case VIDIOC_DQBUF: |
2000 | buf = data; |
2001 | return video_dequeue_buf(sc, buf); |
2002 | #ifndef _LP64 |
2003 | case VIDIOC_DQBUF50: |
2004 | buf50tobuf(data, buf = &bufspace); |
2005 | if ((error = video_dequeue_buf(sc, buf)) != 0) |
2006 | return error; |
2007 | buftobuf50(data, buf); |
2008 | return 0; |
2009 | #endif |
2010 | case VIDIOC_STREAMON: |
2011 | typep = data; |
2012 | return video_stream_on(sc, *typep); |
2013 | case VIDIOC_STREAMOFF: |
2014 | typep = data; |
2015 | return video_stream_off(sc, *typep); |
2016 | default: |
2017 | DPRINTF(("videoioctl: invalid cmd %s (%lx)\n" , |
2018 | video_ioctl_str(cmd), cmd)); |
2019 | return EINVAL; |
2020 | } |
2021 | } |
2022 | |
2023 | #ifdef VIDEO_DEBUG |
2024 | static const char * |
2025 | video_ioctl_str(u_long cmd) |
2026 | { |
2027 | const char *str; |
2028 | |
2029 | switch (cmd) { |
2030 | case VIDIOC_QUERYCAP: |
2031 | str = "VIDIOC_QUERYCAP" ; |
2032 | break; |
2033 | case VIDIOC_RESERVED: |
2034 | str = "VIDIOC_RESERVED" ; |
2035 | break; |
2036 | case VIDIOC_ENUM_FMT: |
2037 | str = "VIDIOC_ENUM_FMT" ; |
2038 | break; |
2039 | case VIDIOC_G_FMT: |
2040 | str = "VIDIOC_G_FMT" ; |
2041 | break; |
2042 | case VIDIOC_S_FMT: |
2043 | str = "VIDIOC_S_FMT" ; |
2044 | break; |
2045 | /* 6 and 7 are VIDIOC_[SG]_COMP, which are unsupported */ |
2046 | case VIDIOC_REQBUFS: |
2047 | str = "VIDIOC_REQBUFS" ; |
2048 | break; |
2049 | case VIDIOC_QUERYBUF: |
2050 | str = "VIDIOC_QUERYBUF" ; |
2051 | break; |
2052 | #ifndef _LP64 |
2053 | case VIDIOC_QUERYBUF50: |
2054 | str = "VIDIOC_QUERYBUF50" ; |
2055 | break; |
2056 | #endif |
2057 | case VIDIOC_G_FBUF: |
2058 | str = "VIDIOC_G_FBUF" ; |
2059 | break; |
2060 | case VIDIOC_S_FBUF: |
2061 | str = "VIDIOC_S_FBUF" ; |
2062 | break; |
2063 | case VIDIOC_OVERLAY: |
2064 | str = "VIDIOC_OVERLAY" ; |
2065 | break; |
2066 | case VIDIOC_QBUF: |
2067 | str = "VIDIOC_QBUF" ; |
2068 | break; |
2069 | #ifndef _LP64 |
2070 | case VIDIOC_QBUF50: |
2071 | str = "VIDIOC_QBUF50" ; |
2072 | break; |
2073 | #endif |
2074 | case VIDIOC_DQBUF: |
2075 | str = "VIDIOC_DQBUF" ; |
2076 | break; |
2077 | #ifndef _LP64 |
2078 | case VIDIOC_DQBUF50: |
2079 | str = "VIDIOC_DQBUF50" ; |
2080 | break; |
2081 | #endif |
2082 | case VIDIOC_STREAMON: |
2083 | str = "VIDIOC_STREAMON" ; |
2084 | break; |
2085 | case VIDIOC_STREAMOFF: |
2086 | str = "VIDIOC_STREAMOFF" ; |
2087 | break; |
2088 | case VIDIOC_G_PARM: |
2089 | str = "VIDIOC_G_PARAM" ; |
2090 | break; |
2091 | case VIDIOC_S_PARM: |
2092 | str = "VIDIOC_S_PARAM" ; |
2093 | break; |
2094 | case VIDIOC_G_STD: |
2095 | str = "VIDIOC_G_STD" ; |
2096 | break; |
2097 | case VIDIOC_S_STD: |
2098 | str = "VIDIOC_S_STD" ; |
2099 | break; |
2100 | case VIDIOC_ENUMSTD: |
2101 | str = "VIDIOC_ENUMSTD" ; |
2102 | break; |
2103 | case VIDIOC_ENUMINPUT: |
2104 | str = "VIDIOC_ENUMINPUT" ; |
2105 | break; |
2106 | case VIDIOC_G_CTRL: |
2107 | str = "VIDIOC_G_CTRL" ; |
2108 | break; |
2109 | case VIDIOC_S_CTRL: |
2110 | str = "VIDIOC_S_CTRL" ; |
2111 | break; |
2112 | case VIDIOC_G_TUNER: |
2113 | str = "VIDIOC_G_TUNER" ; |
2114 | break; |
2115 | case VIDIOC_S_TUNER: |
2116 | str = "VIDIOC_S_TUNER" ; |
2117 | break; |
2118 | case VIDIOC_G_AUDIO: |
2119 | str = "VIDIOC_G_AUDIO" ; |
2120 | break; |
2121 | case VIDIOC_S_AUDIO: |
2122 | str = "VIDIOC_S_AUDIO" ; |
2123 | break; |
2124 | case VIDIOC_QUERYCTRL: |
2125 | str = "VIDIOC_QUERYCTRL" ; |
2126 | break; |
2127 | case VIDIOC_QUERYMENU: |
2128 | str = "VIDIOC_QUERYMENU" ; |
2129 | break; |
2130 | case VIDIOC_G_INPUT: |
2131 | str = "VIDIOC_G_INPUT" ; |
2132 | break; |
2133 | case VIDIOC_S_INPUT: |
2134 | str = "VIDIOC_S_INPUT" ; |
2135 | break; |
2136 | case VIDIOC_G_OUTPUT: |
2137 | str = "VIDIOC_G_OUTPUT" ; |
2138 | break; |
2139 | case VIDIOC_S_OUTPUT: |
2140 | str = "VIDIOC_S_OUTPUT" ; |
2141 | break; |
2142 | case VIDIOC_ENUMOUTPUT: |
2143 | str = "VIDIOC_ENUMOUTPUT" ; |
2144 | break; |
2145 | case VIDIOC_G_AUDOUT: |
2146 | str = "VIDIOC_G_AUDOUT" ; |
2147 | break; |
2148 | case VIDIOC_S_AUDOUT: |
2149 | str = "VIDIOC_S_AUDOUT" ; |
2150 | break; |
2151 | case VIDIOC_G_MODULATOR: |
2152 | str = "VIDIOC_G_MODULATOR" ; |
2153 | break; |
2154 | case VIDIOC_S_MODULATOR: |
2155 | str = "VIDIOC_S_MODULATOR" ; |
2156 | break; |
2157 | case VIDIOC_G_FREQUENCY: |
2158 | str = "VIDIOC_G_FREQUENCY" ; |
2159 | break; |
2160 | case VIDIOC_S_FREQUENCY: |
2161 | str = "VIDIOC_S_FREQUENCY" ; |
2162 | break; |
2163 | case VIDIOC_CROPCAP: |
2164 | str = "VIDIOC_CROPCAP" ; |
2165 | break; |
2166 | case VIDIOC_G_CROP: |
2167 | str = "VIDIOC_G_CROP" ; |
2168 | break; |
2169 | case VIDIOC_S_CROP: |
2170 | str = "VIDIOC_S_CROP" ; |
2171 | break; |
2172 | case VIDIOC_G_JPEGCOMP: |
2173 | str = "VIDIOC_G_JPEGCOMP" ; |
2174 | break; |
2175 | case VIDIOC_S_JPEGCOMP: |
2176 | str = "VIDIOC_S_JPEGCOMP" ; |
2177 | break; |
2178 | case VIDIOC_QUERYSTD: |
2179 | str = "VIDIOC_QUERYSTD" ; |
2180 | break; |
2181 | case VIDIOC_TRY_FMT: |
2182 | str = "VIDIOC_TRY_FMT" ; |
2183 | break; |
2184 | case VIDIOC_ENUMAUDIO: |
2185 | str = "VIDIOC_ENUMAUDIO" ; |
2186 | break; |
2187 | case VIDIOC_ENUMAUDOUT: |
2188 | str = "VIDIOC_ENUMAUDOUT" ; |
2189 | break; |
2190 | case VIDIOC_G_PRIORITY: |
2191 | str = "VIDIOC_G_PRIORITY" ; |
2192 | break; |
2193 | case VIDIOC_S_PRIORITY: |
2194 | str = "VIDIOC_S_PRIORITY" ; |
2195 | break; |
2196 | default: |
2197 | str = "unknown" ; |
2198 | break; |
2199 | } |
2200 | return str; |
2201 | } |
2202 | #endif |
2203 | |
2204 | |
2205 | int |
2206 | videopoll(dev_t dev, int events, struct lwp *l) |
2207 | { |
2208 | struct video_softc *sc; |
2209 | struct video_stream *vs; |
2210 | int err, revents = 0; |
2211 | |
2212 | sc = device_private(device_lookup(&video_cd, VIDEOUNIT(dev))); |
2213 | vs = &sc->sc_stream_in; |
2214 | |
2215 | if (sc->sc_dying) |
2216 | return (POLLHUP); |
2217 | |
2218 | /* userspace has chosen read() method */ |
2219 | if (vs->vs_method == VIDEO_STREAM_METHOD_NONE) { |
2220 | err = video_stream_setup_bufs(vs, |
2221 | VIDEO_STREAM_METHOD_READ, |
2222 | VIDEO_NUM_BUFS); |
2223 | if (err != 0) |
2224 | return POLLERR; |
2225 | |
2226 | err = video_stream_on(sc, vs->vs_type); |
2227 | if (err != 0) |
2228 | return POLLERR; |
2229 | } |
2230 | |
2231 | mutex_enter(&vs->vs_lock); |
2232 | if (!SIMPLEQ_EMPTY(&sc->sc_stream_in.vs_egress)) |
2233 | revents |= events & (POLLIN | POLLRDNORM); |
2234 | else |
2235 | selrecord(l, &vs->vs_sel); |
2236 | mutex_exit(&vs->vs_lock); |
2237 | |
2238 | return (revents); |
2239 | } |
2240 | |
2241 | |
2242 | paddr_t |
2243 | videommap(dev_t dev, off_t off, int prot) |
2244 | { |
2245 | struct video_softc *sc; |
2246 | struct video_stream *vs; |
2247 | /* paddr_t pa; */ |
2248 | |
2249 | sc = device_lookup_private(&video_cd, VIDEOUNIT(dev)); |
2250 | if (sc->sc_dying) |
2251 | return -1; |
2252 | |
2253 | vs = &sc->sc_stream_in; |
2254 | |
2255 | return scatter_buf_map(&vs->vs_data, off); |
2256 | } |
2257 | |
2258 | |
2259 | /* Allocates buffers and initizlizes some fields. The format field |
2260 | * must already have been initialized. */ |
2261 | void |
2262 | video_stream_init(struct video_stream *vs) |
2263 | { |
2264 | vs->vs_method = VIDEO_STREAM_METHOD_NONE; |
2265 | vs->vs_flags = 0; |
2266 | vs->vs_frameno = -1; |
2267 | vs->vs_sequence = 0; |
2268 | vs->vs_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
2269 | vs->vs_nbufs = 0; |
2270 | vs->vs_buf = NULL; |
2271 | vs->vs_streaming = false; |
2272 | |
2273 | memset(&vs->vs_format, 0, sizeof(vs->vs_format)); |
2274 | |
2275 | SIMPLEQ_INIT(&vs->vs_ingress); |
2276 | SIMPLEQ_INIT(&vs->vs_egress); |
2277 | |
2278 | mutex_init(&vs->vs_lock, MUTEX_DEFAULT, IPL_NONE); |
2279 | cv_init(&vs->vs_sample_cv, "video" ); |
2280 | selinit(&vs->vs_sel); |
2281 | |
2282 | scatter_buf_init(&vs->vs_data); |
2283 | } |
2284 | |
2285 | void |
2286 | video_stream_fini(struct video_stream *vs) |
2287 | { |
2288 | /* Sample data in queues has already been freed */ |
2289 | /* while (SIMPLEQ_FIRST(&vs->vs_ingress) != NULL) |
2290 | SIMPLEQ_REMOVE_HEAD(&vs->vs_ingress, entries); |
2291 | while (SIMPLEQ_FIRST(&vs->vs_egress) != NULL) |
2292 | SIMPLEQ_REMOVE_HEAD(&vs->vs_egress, entries); */ |
2293 | |
2294 | mutex_destroy(&vs->vs_lock); |
2295 | cv_destroy(&vs->vs_sample_cv); |
2296 | seldestroy(&vs->vs_sel); |
2297 | |
2298 | scatter_buf_destroy(&vs->vs_data); |
2299 | } |
2300 | |
2301 | static int |
2302 | video_stream_setup_bufs(struct video_stream *vs, |
2303 | enum video_stream_method method, |
2304 | uint8_t nbufs) |
2305 | { |
2306 | int i, err; |
2307 | |
2308 | mutex_enter(&vs->vs_lock); |
2309 | |
2310 | /* Ensure that all allocated buffers are queued and not under |
2311 | * userspace control. */ |
2312 | for (i = 0; i < vs->vs_nbufs; ++i) { |
2313 | if (!(vs->vs_buf[i]->vb_buf->flags & V4L2_BUF_FLAG_QUEUED)) { |
2314 | mutex_exit(&vs->vs_lock); |
2315 | return EBUSY; |
2316 | } |
2317 | } |
2318 | |
2319 | /* Allocate the buffers */ |
2320 | err = video_stream_realloc_bufs(vs, nbufs); |
2321 | if (err != 0) { |
2322 | mutex_exit(&vs->vs_lock); |
2323 | return err; |
2324 | } |
2325 | |
2326 | /* Queue up buffers for read method. Other methods are queued |
2327 | * by VIDIOC_QBUF ioctl. */ |
2328 | if (method == VIDEO_STREAM_METHOD_READ) { |
2329 | for (i = 0; i < nbufs; ++i) |
2330 | if (!(vs->vs_buf[i]->vb_buf->flags & V4L2_BUF_FLAG_QUEUED)) |
2331 | video_stream_enqueue(vs, vs->vs_buf[i]); |
2332 | } |
2333 | |
2334 | vs->vs_method = method; |
2335 | mutex_exit(&vs->vs_lock); |
2336 | |
2337 | return 0; |
2338 | } |
2339 | |
2340 | /* Free all buffer memory in preparation for close(). This should |
2341 | * free buffers regardless of errors. Use video_stream_setup_bufs if |
2342 | * you need to check for errors. Streaming should be off before |
2343 | * calling this function. */ |
2344 | static void |
2345 | video_stream_teardown_bufs(struct video_stream *vs) |
2346 | { |
2347 | int err; |
2348 | |
2349 | mutex_enter(&vs->vs_lock); |
2350 | |
2351 | if (vs->vs_streaming) { |
2352 | DPRINTF(("video_stream_teardown_bufs: " |
2353 | "tearing down bufs while streaming\n" )); |
2354 | } |
2355 | |
2356 | /* dequeue all buffers */ |
2357 | while (SIMPLEQ_FIRST(&vs->vs_ingress) != NULL) |
2358 | SIMPLEQ_REMOVE_HEAD(&vs->vs_ingress, entries); |
2359 | while (SIMPLEQ_FIRST(&vs->vs_egress) != NULL) |
2360 | SIMPLEQ_REMOVE_HEAD(&vs->vs_egress, entries); |
2361 | |
2362 | err = video_stream_free_bufs(vs); |
2363 | if (err != 0) { |
2364 | DPRINTF(("video_stream_teardown_bufs: " |
2365 | "error releasing buffers: %d\n" , |
2366 | err)); |
2367 | } |
2368 | vs->vs_method = VIDEO_STREAM_METHOD_NONE; |
2369 | |
2370 | mutex_exit(&vs->vs_lock); |
2371 | } |
2372 | |
2373 | static struct video_buffer * |
2374 | video_buffer_alloc(void) |
2375 | { |
2376 | struct video_buffer *vb; |
2377 | |
2378 | vb = kmem_alloc(sizeof(*vb), KM_SLEEP); |
2379 | if (vb == NULL) |
2380 | return NULL; |
2381 | |
2382 | vb->vb_buf = kmem_alloc(sizeof(*vb->vb_buf), KM_SLEEP); |
2383 | if (vb->vb_buf == NULL) { |
2384 | kmem_free(vb, sizeof(*vb)); |
2385 | return NULL; |
2386 | } |
2387 | |
2388 | return vb; |
2389 | } |
2390 | |
2391 | static void |
2392 | video_buffer_free(struct video_buffer *vb) |
2393 | { |
2394 | kmem_free(vb->vb_buf, sizeof(*vb->vb_buf)); |
2395 | vb->vb_buf = NULL; |
2396 | kmem_free(vb, sizeof(*vb)); |
2397 | } |
2398 | |
2399 | /* TODO: for userptr method |
2400 | struct video_buffer * |
2401 | video_buf_alloc_with_ubuf(struct v4l2_buffer *buf) |
2402 | { |
2403 | } |
2404 | |
2405 | void |
2406 | video_buffer_free_with_ubuf(struct video_buffer *vb) |
2407 | { |
2408 | } |
2409 | */ |
2410 | |
2411 | static int |
2412 | video_stream_realloc_bufs(struct video_stream *vs, uint8_t nbufs) |
2413 | { |
2414 | int i, err; |
2415 | uint8_t minnbufs, oldnbufs; |
2416 | size_t size; |
2417 | off_t offset; |
2418 | struct video_buffer **oldbuf; |
2419 | struct v4l2_buffer *buf; |
2420 | |
2421 | size = PAGE_ALIGN(vs->vs_format.sample_size) * nbufs; |
2422 | err = scatter_buf_set_size(&vs->vs_data, size); |
2423 | if (err != 0) |
2424 | return err; |
2425 | |
2426 | oldnbufs = vs->vs_nbufs; |
2427 | oldbuf = vs->vs_buf; |
2428 | |
2429 | vs->vs_nbufs = nbufs; |
2430 | if (nbufs > 0) { |
2431 | vs->vs_buf = |
2432 | kmem_alloc(sizeof(struct video_buffer *) * nbufs, KM_SLEEP); |
2433 | if (vs->vs_buf == NULL) { |
2434 | vs->vs_nbufs = oldnbufs; |
2435 | vs->vs_buf = oldbuf; |
2436 | |
2437 | return ENOMEM; |
2438 | } |
2439 | } else { |
2440 | vs->vs_buf = NULL; |
2441 | } |
2442 | |
2443 | minnbufs = min(vs->vs_nbufs, oldnbufs); |
2444 | /* copy any bufs that will be reused */ |
2445 | for (i = 0; i < minnbufs; ++i) |
2446 | vs->vs_buf[i] = oldbuf[i]; |
2447 | /* allocate any necessary new bufs */ |
2448 | for (; i < vs->vs_nbufs; ++i) |
2449 | vs->vs_buf[i] = video_buffer_alloc(); |
2450 | /* free any bufs no longer used */ |
2451 | for (; i < oldnbufs; ++i) { |
2452 | video_buffer_free(oldbuf[i]); |
2453 | oldbuf[i] = NULL; |
2454 | } |
2455 | |
2456 | /* Free old buffer metadata */ |
2457 | if (oldbuf != NULL) |
2458 | kmem_free(oldbuf, sizeof(struct video_buffer *) * oldnbufs); |
2459 | |
2460 | /* initialize bufs */ |
2461 | offset = 0; |
2462 | for (i = 0; i < vs->vs_nbufs; ++i) { |
2463 | buf = vs->vs_buf[i]->vb_buf; |
2464 | buf->index = i; |
2465 | buf->type = vs->vs_type; |
2466 | buf->bytesused = 0; |
2467 | buf->flags = 0; |
2468 | buf->field = 0; |
2469 | buf->sequence = 0; |
2470 | buf->memory = V4L2_MEMORY_MMAP; |
2471 | buf->m.offset = offset; |
2472 | buf->length = PAGE_ALIGN(vs->vs_format.sample_size); |
2473 | buf->input = 0; |
2474 | buf->reserved = 0; |
2475 | |
2476 | offset += buf->length; |
2477 | } |
2478 | |
2479 | return 0; |
2480 | } |
2481 | |
2482 | /* Accepts a video_sample into the ingress queue. Caller must hold |
2483 | * the stream lock. */ |
2484 | void |
2485 | video_stream_enqueue(struct video_stream *vs, struct video_buffer *vb) |
2486 | { |
2487 | if (vb->vb_buf->flags & V4L2_BUF_FLAG_QUEUED) { |
2488 | DPRINTF(("video_stream_enqueue: sample already queued\n" )); |
2489 | return; |
2490 | } |
2491 | |
2492 | vb->vb_buf->flags |= V4L2_BUF_FLAG_QUEUED; |
2493 | vb->vb_buf->flags &= ~V4L2_BUF_FLAG_DONE; |
2494 | |
2495 | vb->vb_buf->bytesused = 0; |
2496 | |
2497 | SIMPLEQ_INSERT_TAIL(&vs->vs_ingress, vb, entries); |
2498 | } |
2499 | |
2500 | |
2501 | /* Removes the head of the egress queue for use by userspace. Caller |
2502 | * must hold the stream lock. */ |
2503 | struct video_buffer * |
2504 | video_stream_dequeue(struct video_stream *vs) |
2505 | { |
2506 | struct video_buffer *vb; |
2507 | |
2508 | if (!SIMPLEQ_EMPTY(&vs->vs_egress)) { |
2509 | vb = SIMPLEQ_FIRST(&vs->vs_egress); |
2510 | SIMPLEQ_REMOVE_HEAD(&vs->vs_egress, entries); |
2511 | vb->vb_buf->flags &= ~V4L2_BUF_FLAG_QUEUED; |
2512 | vb->vb_buf->flags |= V4L2_BUF_FLAG_DONE; |
2513 | return vb; |
2514 | } else { |
2515 | return NULL; |
2516 | } |
2517 | } |
2518 | |
2519 | static void |
2520 | v4l2buf_set_timestamp(struct v4l2_buffer *buf) |
2521 | { |
2522 | |
2523 | getmicrotime(&buf->timestamp); |
2524 | } |
2525 | |
2526 | /* |
2527 | * write payload data to the appropriate video sample, possibly moving |
2528 | * the sample from ingress to egress queues |
2529 | */ |
2530 | void |
2531 | video_stream_write(struct video_stream *vs, |
2532 | const struct video_payload *payload) |
2533 | { |
2534 | struct video_buffer *vb; |
2535 | struct v4l2_buffer *buf; |
2536 | struct scatter_io sio; |
2537 | |
2538 | mutex_enter(&vs->vs_lock); |
2539 | |
2540 | /* change of frameno implies end of current frame */ |
2541 | if (vs->vs_frameno >= 0 && vs->vs_frameno != payload->frameno) |
2542 | video_stream_sample_done(vs); |
2543 | |
2544 | vs->vs_frameno = payload->frameno; |
2545 | |
2546 | if (vs->vs_drop || SIMPLEQ_EMPTY(&vs->vs_ingress)) { |
2547 | /* DPRINTF(("video_stream_write: dropping sample %d\n", |
2548 | vs->vs_sequence)); */ |
2549 | vs->vs_drop = true; |
2550 | } else if (payload->size > 0) { |
2551 | vb = SIMPLEQ_FIRST(&vs->vs_ingress); |
2552 | buf = vb->vb_buf; |
2553 | if (!buf->bytesused) |
2554 | v4l2buf_set_timestamp(buf); |
2555 | if (payload->size > buf->length - buf->bytesused) { |
2556 | DPRINTF(("video_stream_write: " |
2557 | "payload would overflow\n" )); |
2558 | } else if (scatter_io_init(&vs->vs_data, |
2559 | buf->m.offset + buf->bytesused, |
2560 | payload->size, |
2561 | &sio)) |
2562 | { |
2563 | scatter_io_copyin(&sio, payload->data); |
2564 | buf->bytesused += (payload->size - sio.sio_resid); |
2565 | } else { |
2566 | DPRINTF(("video_stream_write: failed to init scatter io " |
2567 | "vb=%p buf=%p " |
2568 | "buf->m.offset=%d buf->bytesused=%u " |
2569 | "payload->size=%zu\n" , |
2570 | vb, buf, |
2571 | buf->m.offset, buf->bytesused, payload->size)); |
2572 | } |
2573 | } |
2574 | |
2575 | /* if the payload marks it, we can do sample_done() early */ |
2576 | if (payload->end_of_frame) |
2577 | video_stream_sample_done(vs); |
2578 | |
2579 | mutex_exit(&vs->vs_lock); |
2580 | } |
2581 | |
2582 | |
2583 | /* Moves the head of the ingress queue to the tail of the egress |
2584 | * queue, or resets drop status if we were dropping this sample. |
2585 | * Caller should hold the stream queue lock. */ |
2586 | void |
2587 | video_stream_sample_done(struct video_stream *vs) |
2588 | { |
2589 | struct video_buffer *vb; |
2590 | |
2591 | if (vs->vs_drop) { |
2592 | vs->vs_drop = false; |
2593 | } else if (!SIMPLEQ_EMPTY(&vs->vs_ingress)) { |
2594 | vb = SIMPLEQ_FIRST(&vs->vs_ingress); |
2595 | vb->vb_buf->sequence = vs->vs_sequence; |
2596 | SIMPLEQ_REMOVE_HEAD(&vs->vs_ingress, entries); |
2597 | |
2598 | SIMPLEQ_INSERT_TAIL(&vs->vs_egress, vb, entries); |
2599 | cv_signal(&vs->vs_sample_cv); |
2600 | selnotify(&vs->vs_sel, 0, 0); |
2601 | } else { |
2602 | DPRINTF(("video_stream_sample_done: no sample\n" )); |
2603 | } |
2604 | |
2605 | vs->vs_frameno ^= 1; |
2606 | vs->vs_sequence++; |
2607 | } |
2608 | |
2609 | /* Check if all buffers are queued, i.e. none are under control of |
2610 | * userspace. */ |
2611 | /* |
2612 | static bool |
2613 | video_stream_all_queued(struct video_stream *vs) |
2614 | { |
2615 | } |
2616 | */ |
2617 | |
2618 | |
2619 | static void |
2620 | scatter_buf_init(struct scatter_buf *sb) |
2621 | { |
2622 | sb->sb_pool = pool_cache_init(PAGE_SIZE, 0, 0, 0, |
2623 | "video" , NULL, IPL_VIDEO, |
2624 | NULL, NULL, NULL); |
2625 | sb->sb_size = 0; |
2626 | sb->sb_npages = 0; |
2627 | sb->sb_page_ary = NULL; |
2628 | } |
2629 | |
2630 | static void |
2631 | scatter_buf_destroy(struct scatter_buf *sb) |
2632 | { |
2633 | /* Do we need to return everything to the pool first? */ |
2634 | scatter_buf_set_size(sb, 0); |
2635 | pool_cache_destroy(sb->sb_pool); |
2636 | sb->sb_pool = 0; |
2637 | sb->sb_npages = 0; |
2638 | sb->sb_page_ary = NULL; |
2639 | } |
2640 | |
2641 | /* Increase or decrease the size of the buffer */ |
2642 | static int |
2643 | scatter_buf_set_size(struct scatter_buf *sb, size_t sz) |
2644 | { |
2645 | int i; |
2646 | size_t npages, minpages, oldnpages; |
2647 | uint8_t **old_ary; |
2648 | |
2649 | npages = (sz >> PAGE_SHIFT) + ((sz & PAGE_MASK) > 0); |
2650 | |
2651 | if (sb->sb_npages == npages) { |
2652 | return 0; |
2653 | } |
2654 | |
2655 | oldnpages = sb->sb_npages; |
2656 | old_ary = sb->sb_page_ary; |
2657 | |
2658 | sb->sb_npages = npages; |
2659 | if (npages > 0) { |
2660 | sb->sb_page_ary = |
2661 | kmem_alloc(sizeof(uint8_t *) * npages, KM_SLEEP); |
2662 | if (sb->sb_page_ary == NULL) { |
2663 | sb->sb_npages = oldnpages; |
2664 | sb->sb_page_ary = old_ary; |
2665 | return ENOMEM; |
2666 | } |
2667 | } else { |
2668 | sb->sb_page_ary = NULL; |
2669 | } |
2670 | |
2671 | minpages = min(npages, oldnpages); |
2672 | /* copy any pages that will be reused */ |
2673 | for (i = 0; i < minpages; ++i) |
2674 | sb->sb_page_ary[i] = old_ary[i]; |
2675 | /* allocate any new pages */ |
2676 | for (; i < npages; ++i) { |
2677 | sb->sb_page_ary[i] = pool_cache_get(sb->sb_pool, 0); |
2678 | /* TODO: does pool_cache_get return NULL on |
2679 | * ENOMEM? If so, we need to release or note |
2680 | * the pages with did allocate |
2681 | * successfully. */ |
2682 | if (sb->sb_page_ary[i] == NULL) { |
2683 | DPRINTF(("video: pool_cache_get ENOMEM\n" )); |
2684 | return ENOMEM; |
2685 | } |
2686 | } |
2687 | /* return any pages no longer needed */ |
2688 | for (; i < oldnpages; ++i) |
2689 | pool_cache_put(sb->sb_pool, old_ary[i]); |
2690 | |
2691 | if (old_ary != NULL) |
2692 | kmem_free(old_ary, sizeof(uint8_t *) * oldnpages); |
2693 | |
2694 | sb->sb_size = sb->sb_npages << PAGE_SHIFT; |
2695 | |
2696 | return 0; |
2697 | } |
2698 | |
2699 | |
2700 | static paddr_t |
2701 | scatter_buf_map(struct scatter_buf *sb, off_t off) |
2702 | { |
2703 | size_t pg; |
2704 | paddr_t pa; |
2705 | |
2706 | pg = off >> PAGE_SHIFT; |
2707 | |
2708 | if (pg >= sb->sb_npages) |
2709 | return -1; |
2710 | else if (!pmap_extract(pmap_kernel(), (vaddr_t)sb->sb_page_ary[pg], &pa)) |
2711 | return -1; |
2712 | |
2713 | return atop(pa); |
2714 | } |
2715 | |
2716 | /* Initialize data for an io operation on a scatter buffer. Returns |
2717 | * true if the transfer is valid, or false if out of range. */ |
2718 | static bool |
2719 | scatter_io_init(struct scatter_buf *sb, |
2720 | off_t off, size_t len, |
2721 | struct scatter_io *sio) |
2722 | { |
2723 | if ((off + len) > sb->sb_size) { |
2724 | DPRINTF(("video: scatter_io_init failed: off=%" PRId64 |
2725 | " len=%zu sb->sb_size=%zu\n" , |
2726 | off, len, sb->sb_size)); |
2727 | return false; |
2728 | } |
2729 | |
2730 | sio->sio_buf = sb; |
2731 | sio->sio_offset = off; |
2732 | sio->sio_resid = len; |
2733 | |
2734 | return true; |
2735 | } |
2736 | |
2737 | /* Store the pointer and size of the next contiguous segment. Returns |
2738 | * true if the segment is valid, or false if all has been transfered. |
2739 | * Does not check for overflow. */ |
2740 | static bool |
2741 | scatter_io_next(struct scatter_io *sio, void **p, size_t *sz) |
2742 | { |
2743 | size_t pg, pgo; |
2744 | |
2745 | if (sio->sio_resid == 0) |
2746 | return false; |
2747 | |
2748 | pg = sio->sio_offset >> PAGE_SHIFT; |
2749 | pgo = sio->sio_offset & PAGE_MASK; |
2750 | |
2751 | *sz = min(PAGE_SIZE - pgo, sio->sio_resid); |
2752 | *p = sio->sio_buf->sb_page_ary[pg] + pgo; |
2753 | |
2754 | sio->sio_offset += *sz; |
2755 | sio->sio_resid -= *sz; |
2756 | |
2757 | return true; |
2758 | } |
2759 | |
2760 | /* Semi-undo of a failed segment copy. Updates the scatter_io |
2761 | * struct to the previous values prior to a failed segment copy. */ |
2762 | static void |
2763 | scatter_io_undo(struct scatter_io *sio, size_t sz) |
2764 | { |
2765 | sio->sio_offset -= sz; |
2766 | sio->sio_resid += sz; |
2767 | } |
2768 | |
2769 | /* Copy data from src into the scatter_buf as described by io. */ |
2770 | static void |
2771 | scatter_io_copyin(struct scatter_io *sio, const void *p) |
2772 | { |
2773 | void *dst; |
2774 | const uint8_t *src = p; |
2775 | size_t sz; |
2776 | |
2777 | while(scatter_io_next(sio, &dst, &sz)) { |
2778 | memcpy(dst, src, sz); |
2779 | src += sz; |
2780 | } |
2781 | } |
2782 | |
2783 | /* --not used; commented to avoid compiler warnings-- |
2784 | static void |
2785 | scatter_io_copyout(struct scatter_io *sio, void *p) |
2786 | { |
2787 | void *src; |
2788 | uint8_t *dst = p; |
2789 | size_t sz; |
2790 | |
2791 | while(scatter_io_next(sio, &src, &sz)) { |
2792 | memcpy(dst, src, sz); |
2793 | dst += sz; |
2794 | } |
2795 | } |
2796 | */ |
2797 | |
2798 | /* Performat a series of uiomove calls on a scatter buf. Returns |
2799 | * EFAULT if uiomove EFAULTs on the first segment. Otherwise, returns |
2800 | * an incomplete transfer but with no error. */ |
2801 | static int |
2802 | scatter_io_uiomove(struct scatter_io *sio, struct uio *uio) |
2803 | { |
2804 | void *p; |
2805 | size_t sz; |
2806 | bool first = true; |
2807 | int err; |
2808 | |
2809 | while(scatter_io_next(sio, &p, &sz)) { |
2810 | err = uiomove(p, sz, uio); |
2811 | if (err == EFAULT) { |
2812 | scatter_io_undo(sio, sz); |
2813 | if (first) |
2814 | return EFAULT; |
2815 | else |
2816 | return 0; |
2817 | } |
2818 | first = false; |
2819 | } |
2820 | |
2821 | return 0; |
2822 | } |
2823 | |
2824 | #endif /* NVIDEO > 0 */ |
2825 | |