1 /*
2 * vivid-vid-cap.c - video capture support functions.
3 *
4 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
5 *
6 * This program is free software; you may redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
11 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
12 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
13 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
14 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
15 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
16 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17 * SOFTWARE.
18 */
19
20 #include <linux/errno.h>
21 #include <linux/kernel.h>
22 #include <linux/sched.h>
23 #include <linux/vmalloc.h>
24 #include <linux/videodev2.h>
25 #include <linux/v4l2-dv-timings.h>
26 #include <media/v4l2-common.h>
27 #include <media/v4l2-event.h>
28 #include <media/v4l2-dv-timings.h>
29
30 #include "vivid-core.h"
31 #include "vivid-vid-common.h"
32 #include "vivid-kthread-cap.h"
33 #include "vivid-vid-cap.h"
34
35 /* timeperframe: min/max and default */
36 static const struct v4l2_fract
37 tpf_min = {.numerator = 1, .denominator = FPS_MAX},
38 tpf_max = {.numerator = FPS_MAX, .denominator = 1},
39 tpf_default = {.numerator = 1, .denominator = 30};
40
41 static const struct vivid_fmt formats_ovl[] = {
42 {
43 .name = "RGB565 (LE)",
44 .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
45 .depth = 16,
46 .planes = 1,
47 },
48 {
49 .name = "XRGB555 (LE)",
50 .fourcc = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
51 .depth = 16,
52 .planes = 1,
53 },
54 {
55 .name = "ARGB555 (LE)",
56 .fourcc = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
57 .depth = 16,
58 .planes = 1,
59 },
60 };
61
62 /* The number of discrete webcam framesizes */
63 #define VIVID_WEBCAM_SIZES 3
64 /* The number of discrete webcam frameintervals */
65 #define VIVID_WEBCAM_IVALS (VIVID_WEBCAM_SIZES * 2)
66
67 /* Sizes must be in increasing order */
68 static const struct v4l2_frmsize_discrete webcam_sizes[VIVID_WEBCAM_SIZES] = {
69 { 320, 180 },
70 { 640, 360 },
71 { 1280, 720 },
72 };
73
74 /*
75 * Intervals must be in increasing order and there must be twice as many
76 * elements in this array as there are in webcam_sizes.
77 */
78 static const struct v4l2_fract webcam_intervals[VIVID_WEBCAM_IVALS] = {
79 { 1, 10 },
80 { 1, 15 },
81 { 1, 25 },
82 { 1, 30 },
83 { 1, 50 },
84 { 1, 60 },
85 };
86
87 static const struct v4l2_discrete_probe webcam_probe = {
88 webcam_sizes,
89 VIVID_WEBCAM_SIZES
90 };
91
vid_cap_queue_setup(struct vb2_queue * vq,const struct v4l2_format * fmt,unsigned * nbuffers,unsigned * nplanes,unsigned sizes[],void * alloc_ctxs[])92 static int vid_cap_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
93 unsigned *nbuffers, unsigned *nplanes,
94 unsigned sizes[], void *alloc_ctxs[])
95 {
96 struct vivid_dev *dev = vb2_get_drv_priv(vq);
97 unsigned planes = tpg_g_planes(&dev->tpg);
98 unsigned h = dev->fmt_cap_rect.height;
99 unsigned p;
100
101 if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
102 /*
103 * You cannot use read() with FIELD_ALTERNATE since the field
104 * information (TOP/BOTTOM) cannot be passed back to the user.
105 */
106 if (vb2_fileio_is_active(vq))
107 return -EINVAL;
108 }
109
110 if (dev->queue_setup_error) {
111 /*
112 * Error injection: test what happens if queue_setup() returns
113 * an error.
114 */
115 dev->queue_setup_error = false;
116 return -EINVAL;
117 }
118 if (fmt) {
119 const struct v4l2_pix_format_mplane *mp;
120 struct v4l2_format mp_fmt;
121 const struct vivid_fmt *vfmt;
122
123 if (!V4L2_TYPE_IS_MULTIPLANAR(fmt->type)) {
124 fmt_sp2mp(fmt, &mp_fmt);
125 fmt = &mp_fmt;
126 }
127 mp = &fmt->fmt.pix_mp;
128 /*
129 * Check if the number of planes in the specified format match
130 * the number of planes in the current format. You can't mix that.
131 */
132 if (mp->num_planes != planes)
133 return -EINVAL;
134 vfmt = vivid_get_format(dev, mp->pixelformat);
135 for (p = 0; p < planes; p++) {
136 sizes[p] = mp->plane_fmt[p].sizeimage;
137 if (sizes[0] < tpg_g_bytesperline(&dev->tpg, 0) * h +
138 vfmt->data_offset[p])
139 return -EINVAL;
140 }
141 } else {
142 for (p = 0; p < planes; p++)
143 sizes[p] = tpg_g_bytesperline(&dev->tpg, p) * h +
144 dev->fmt_cap->data_offset[p];
145 }
146
147 if (vq->num_buffers + *nbuffers < 2)
148 *nbuffers = 2 - vq->num_buffers;
149
150 *nplanes = planes;
151
152 /*
153 * videobuf2-vmalloc allocator is context-less so no need to set
154 * alloc_ctxs array.
155 */
156
157 if (planes == 2)
158 dprintk(dev, 1, "%s, count=%d, sizes=%u, %u\n", __func__,
159 *nbuffers, sizes[0], sizes[1]);
160 else
161 dprintk(dev, 1, "%s, count=%d, size=%u\n", __func__,
162 *nbuffers, sizes[0]);
163
164 return 0;
165 }
166
vid_cap_buf_prepare(struct vb2_buffer * vb)167 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
168 {
169 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
170 unsigned long size;
171 unsigned planes = tpg_g_planes(&dev->tpg);
172 unsigned p;
173
174 dprintk(dev, 1, "%s\n", __func__);
175
176 if (WARN_ON(NULL == dev->fmt_cap))
177 return -EINVAL;
178
179 if (dev->buf_prepare_error) {
180 /*
181 * Error injection: test what happens if buf_prepare() returns
182 * an error.
183 */
184 dev->buf_prepare_error = false;
185 return -EINVAL;
186 }
187 for (p = 0; p < planes; p++) {
188 size = tpg_g_bytesperline(&dev->tpg, p) * dev->fmt_cap_rect.height +
189 dev->fmt_cap->data_offset[p];
190
191 if (vb2_plane_size(vb, 0) < size) {
192 dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
193 __func__, p, vb2_plane_size(vb, 0), size);
194 return -EINVAL;
195 }
196
197 vb2_set_plane_payload(vb, p, size);
198 vb->v4l2_planes[p].data_offset = dev->fmt_cap->data_offset[p];
199 }
200
201 return 0;
202 }
203
vid_cap_buf_finish(struct vb2_buffer * vb)204 static void vid_cap_buf_finish(struct vb2_buffer *vb)
205 {
206 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
207 struct v4l2_timecode *tc = &vb->v4l2_buf.timecode;
208 unsigned fps = 25;
209 unsigned seq = vb->v4l2_buf.sequence;
210
211 if (!vivid_is_sdtv_cap(dev))
212 return;
213
214 /*
215 * Set the timecode. Rarely used, so it is interesting to
216 * test this.
217 */
218 vb->v4l2_buf.flags |= V4L2_BUF_FLAG_TIMECODE;
219 if (dev->std_cap & V4L2_STD_525_60)
220 fps = 30;
221 tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
222 tc->flags = 0;
223 tc->frames = seq % fps;
224 tc->seconds = (seq / fps) % 60;
225 tc->minutes = (seq / (60 * fps)) % 60;
226 tc->hours = (seq / (60 * 60 * fps)) % 24;
227 }
228
vid_cap_buf_queue(struct vb2_buffer * vb)229 static void vid_cap_buf_queue(struct vb2_buffer *vb)
230 {
231 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
232 struct vivid_buffer *buf = container_of(vb, struct vivid_buffer, vb);
233
234 dprintk(dev, 1, "%s\n", __func__);
235
236 spin_lock(&dev->slock);
237 list_add_tail(&buf->list, &dev->vid_cap_active);
238 spin_unlock(&dev->slock);
239 }
240
vid_cap_start_streaming(struct vb2_queue * vq,unsigned count)241 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
242 {
243 struct vivid_dev *dev = vb2_get_drv_priv(vq);
244 unsigned i;
245 int err;
246
247 if (vb2_is_streaming(&dev->vb_vid_out_q))
248 dev->can_loop_video = vivid_vid_can_loop(dev);
249
250 if (dev->kthread_vid_cap)
251 return 0;
252
253 dev->vid_cap_seq_count = 0;
254 dprintk(dev, 1, "%s\n", __func__);
255 for (i = 0; i < VIDEO_MAX_FRAME; i++)
256 dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
257 if (dev->start_streaming_error) {
258 dev->start_streaming_error = false;
259 err = -EINVAL;
260 } else {
261 err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
262 }
263 if (err) {
264 struct vivid_buffer *buf, *tmp;
265
266 list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
267 list_del(&buf->list);
268 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
269 }
270 }
271 return err;
272 }
273
274 /* abort streaming and wait for last buffer */
vid_cap_stop_streaming(struct vb2_queue * vq)275 static void vid_cap_stop_streaming(struct vb2_queue *vq)
276 {
277 struct vivid_dev *dev = vb2_get_drv_priv(vq);
278
279 dprintk(dev, 1, "%s\n", __func__);
280 vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
281 dev->can_loop_video = false;
282 }
283
284 const struct vb2_ops vivid_vid_cap_qops = {
285 .queue_setup = vid_cap_queue_setup,
286 .buf_prepare = vid_cap_buf_prepare,
287 .buf_finish = vid_cap_buf_finish,
288 .buf_queue = vid_cap_buf_queue,
289 .start_streaming = vid_cap_start_streaming,
290 .stop_streaming = vid_cap_stop_streaming,
291 .wait_prepare = vivid_unlock,
292 .wait_finish = vivid_lock,
293 };
294
295 /*
296 * Determine the 'picture' quality based on the current TV frequency: either
297 * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
298 * signal or NOISE for no signal.
299 */
vivid_update_quality(struct vivid_dev * dev)300 void vivid_update_quality(struct vivid_dev *dev)
301 {
302 unsigned freq_modulus;
303
304 if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
305 /*
306 * The 'noise' will only be replaced by the actual video
307 * if the output video matches the input video settings.
308 */
309 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
310 return;
311 }
312 if (vivid_is_hdmi_cap(dev) && VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode)) {
313 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
314 return;
315 }
316 if (vivid_is_sdtv_cap(dev) && VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
317 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
318 return;
319 }
320 if (!vivid_is_tv_cap(dev)) {
321 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
322 return;
323 }
324
325 /*
326 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
327 * From +/- 0.25 MHz around the channel there is color, and from
328 * +/- 1 MHz there is grayscale (chroma is lost).
329 * Everywhere else it is just noise.
330 */
331 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
332 if (freq_modulus > 2 * 16) {
333 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
334 next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
335 return;
336 }
337 if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
338 tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
339 else
340 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
341 }
342
343 /*
344 * Get the current picture quality and the associated afc value.
345 */
vivid_get_quality(struct vivid_dev * dev,s32 * afc)346 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
347 {
348 unsigned freq_modulus;
349
350 if (afc)
351 *afc = 0;
352 if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
353 tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
354 return tpg_g_quality(&dev->tpg);
355
356 /*
357 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
358 * From +/- 0.25 MHz around the channel there is color, and from
359 * +/- 1 MHz there is grayscale (chroma is lost).
360 * Everywhere else it is just gray.
361 */
362 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
363 if (afc)
364 *afc = freq_modulus - 1 * 16;
365 return TPG_QUAL_GRAY;
366 }
367
vivid_get_video_aspect(const struct vivid_dev * dev)368 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
369 {
370 if (vivid_is_sdtv_cap(dev))
371 return dev->std_aspect_ratio;
372
373 if (vivid_is_hdmi_cap(dev))
374 return dev->dv_timings_aspect_ratio;
375
376 return TPG_VIDEO_ASPECT_IMAGE;
377 }
378
vivid_get_pixel_aspect(const struct vivid_dev * dev)379 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
380 {
381 if (vivid_is_sdtv_cap(dev))
382 return (dev->std_cap & V4L2_STD_525_60) ?
383 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
384
385 if (vivid_is_hdmi_cap(dev) &&
386 dev->src_rect.width == 720 && dev->src_rect.height <= 576)
387 return dev->src_rect.height == 480 ?
388 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
389
390 return TPG_PIXEL_ASPECT_SQUARE;
391 }
392
393 /*
394 * Called whenever the format has to be reset which can occur when
395 * changing inputs, standard, timings, etc.
396 */
vivid_update_format_cap(struct vivid_dev * dev,bool keep_controls)397 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
398 {
399 struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
400 unsigned size;
401
402 switch (dev->input_type[dev->input]) {
403 case WEBCAM:
404 default:
405 dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
406 dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
407 dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
408 dev->field_cap = V4L2_FIELD_NONE;
409 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
410 break;
411 case TV:
412 case SVID:
413 dev->field_cap = dev->tv_field_cap;
414 dev->src_rect.width = 720;
415 if (dev->std_cap & V4L2_STD_525_60) {
416 dev->src_rect.height = 480;
417 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
418 dev->service_set_cap = V4L2_SLICED_CAPTION_525;
419 } else {
420 dev->src_rect.height = 576;
421 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
422 dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
423 }
424 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
425 break;
426 case HDMI:
427 dev->src_rect.width = bt->width;
428 dev->src_rect.height = bt->height;
429 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
430 dev->timeperframe_vid_cap = (struct v4l2_fract) {
431 size / 100, (u32)bt->pixelclock / 100
432 };
433 if (bt->interlaced)
434 dev->field_cap = V4L2_FIELD_ALTERNATE;
435 else
436 dev->field_cap = V4L2_FIELD_NONE;
437
438 /*
439 * We can be called from within s_ctrl, in that case we can't
440 * set/get controls. Luckily we don't need to in that case.
441 */
442 if (keep_controls || !dev->colorspace)
443 break;
444 if (bt->standards & V4L2_DV_BT_STD_CEA861) {
445 if (bt->width == 720 && bt->height <= 576)
446 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SMPTE170M);
447 else
448 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_REC709);
449 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
450 } else {
451 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SRGB);
452 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
453 }
454 tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
455 break;
456 }
457 vivid_update_quality(dev);
458 tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
459 dev->crop_cap = dev->src_rect;
460 dev->crop_bounds_cap = dev->src_rect;
461 dev->compose_cap = dev->crop_cap;
462 if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
463 dev->compose_cap.height /= 2;
464 dev->fmt_cap_rect = dev->compose_cap;
465 tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
466 tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
467 tpg_update_mv_step(&dev->tpg);
468 }
469
470 /* Map the field to something that is valid for the current input */
vivid_field_cap(struct vivid_dev * dev,enum v4l2_field field)471 static enum v4l2_field vivid_field_cap(struct vivid_dev *dev, enum v4l2_field field)
472 {
473 if (vivid_is_sdtv_cap(dev)) {
474 switch (field) {
475 case V4L2_FIELD_INTERLACED_TB:
476 case V4L2_FIELD_INTERLACED_BT:
477 case V4L2_FIELD_SEQ_TB:
478 case V4L2_FIELD_SEQ_BT:
479 case V4L2_FIELD_TOP:
480 case V4L2_FIELD_BOTTOM:
481 case V4L2_FIELD_ALTERNATE:
482 return field;
483 case V4L2_FIELD_INTERLACED:
484 default:
485 return V4L2_FIELD_INTERLACED;
486 }
487 }
488 if (vivid_is_hdmi_cap(dev))
489 return dev->dv_timings_cap.bt.interlaced ? V4L2_FIELD_ALTERNATE :
490 V4L2_FIELD_NONE;
491 return V4L2_FIELD_NONE;
492 }
493
vivid_colorspace_cap(struct vivid_dev * dev)494 static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
495 {
496 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
497 return tpg_g_colorspace(&dev->tpg);
498 return dev->colorspace_out;
499 }
500
vivid_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)501 int vivid_g_fmt_vid_cap(struct file *file, void *priv,
502 struct v4l2_format *f)
503 {
504 struct vivid_dev *dev = video_drvdata(file);
505 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
506 unsigned p;
507
508 mp->width = dev->fmt_cap_rect.width;
509 mp->height = dev->fmt_cap_rect.height;
510 mp->field = dev->field_cap;
511 mp->pixelformat = dev->fmt_cap->fourcc;
512 mp->colorspace = vivid_colorspace_cap(dev);
513 mp->num_planes = dev->fmt_cap->planes;
514 for (p = 0; p < mp->num_planes; p++) {
515 mp->plane_fmt[p].bytesperline = tpg_g_bytesperline(&dev->tpg, p);
516 mp->plane_fmt[p].sizeimage =
517 mp->plane_fmt[p].bytesperline * mp->height +
518 dev->fmt_cap->data_offset[p];
519 }
520 return 0;
521 }
522
vivid_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)523 int vivid_try_fmt_vid_cap(struct file *file, void *priv,
524 struct v4l2_format *f)
525 {
526 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
527 struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
528 struct vivid_dev *dev = video_drvdata(file);
529 const struct vivid_fmt *fmt;
530 unsigned bytesperline, max_bpl;
531 unsigned factor = 1;
532 unsigned w, h;
533 unsigned p;
534
535 fmt = vivid_get_format(dev, mp->pixelformat);
536 if (!fmt) {
537 dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
538 mp->pixelformat);
539 mp->pixelformat = V4L2_PIX_FMT_YUYV;
540 fmt = vivid_get_format(dev, mp->pixelformat);
541 }
542
543 mp->field = vivid_field_cap(dev, mp->field);
544 if (vivid_is_webcam(dev)) {
545 const struct v4l2_frmsize_discrete *sz =
546 v4l2_find_nearest_format(&webcam_probe, mp->width, mp->height);
547
548 w = sz->width;
549 h = sz->height;
550 } else if (vivid_is_sdtv_cap(dev)) {
551 w = 720;
552 h = (dev->std_cap & V4L2_STD_525_60) ? 480 : 576;
553 } else {
554 w = dev->src_rect.width;
555 h = dev->src_rect.height;
556 }
557 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
558 factor = 2;
559 if (vivid_is_webcam(dev) ||
560 (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
561 mp->width = w;
562 mp->height = h / factor;
563 } else {
564 struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
565
566 rect_set_min_size(&r, &vivid_min_rect);
567 rect_set_max_size(&r, &vivid_max_rect);
568 if (dev->has_scaler_cap && !dev->has_compose_cap) {
569 struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
570
571 rect_set_max_size(&r, &max_r);
572 } else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
573 rect_set_max_size(&r, &dev->src_rect);
574 } else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
575 rect_set_min_size(&r, &dev->src_rect);
576 }
577 mp->width = r.width;
578 mp->height = r.height / factor;
579 }
580
581 /* This driver supports custom bytesperline values */
582
583 /* Calculate the minimum supported bytesperline value */
584 bytesperline = (mp->width * fmt->depth) >> 3;
585 /* Calculate the maximum supported bytesperline value */
586 max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->depth) >> 3;
587 mp->num_planes = fmt->planes;
588 for (p = 0; p < mp->num_planes; p++) {
589 if (pfmt[p].bytesperline > max_bpl)
590 pfmt[p].bytesperline = max_bpl;
591 if (pfmt[p].bytesperline < bytesperline)
592 pfmt[p].bytesperline = bytesperline;
593 pfmt[p].sizeimage = pfmt[p].bytesperline * mp->height +
594 fmt->data_offset[p];
595 memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
596 }
597 mp->colorspace = vivid_colorspace_cap(dev);
598 memset(mp->reserved, 0, sizeof(mp->reserved));
599 return 0;
600 }
601
vivid_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)602 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
603 struct v4l2_format *f)
604 {
605 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
606 struct vivid_dev *dev = video_drvdata(file);
607 struct v4l2_rect *crop = &dev->crop_cap;
608 struct v4l2_rect *compose = &dev->compose_cap;
609 struct vb2_queue *q = &dev->vb_vid_cap_q;
610 int ret = vivid_try_fmt_vid_cap(file, priv, f);
611 unsigned factor = 1;
612 unsigned i;
613
614 if (ret < 0)
615 return ret;
616
617 if (vb2_is_busy(q)) {
618 dprintk(dev, 1, "%s device busy\n", __func__);
619 return -EBUSY;
620 }
621
622 if (dev->overlay_cap_owner && dev->fb_cap.fmt.pixelformat != mp->pixelformat) {
623 dprintk(dev, 1, "overlay is active, can't change pixelformat\n");
624 return -EBUSY;
625 }
626
627 dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
628 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
629 factor = 2;
630
631 /* Note: the webcam input doesn't support scaling, cropping or composing */
632
633 if (!vivid_is_webcam(dev) &&
634 (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
635 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
636
637 if (dev->has_scaler_cap) {
638 if (dev->has_compose_cap)
639 rect_map_inside(compose, &r);
640 else
641 *compose = r;
642 if (dev->has_crop_cap && !dev->has_compose_cap) {
643 struct v4l2_rect min_r = {
644 0, 0,
645 r.width / MAX_ZOOM,
646 factor * r.height / MAX_ZOOM
647 };
648 struct v4l2_rect max_r = {
649 0, 0,
650 r.width * MAX_ZOOM,
651 factor * r.height * MAX_ZOOM
652 };
653
654 rect_set_min_size(crop, &min_r);
655 rect_set_max_size(crop, &max_r);
656 rect_map_inside(crop, &dev->crop_bounds_cap);
657 } else if (dev->has_crop_cap) {
658 struct v4l2_rect min_r = {
659 0, 0,
660 compose->width / MAX_ZOOM,
661 factor * compose->height / MAX_ZOOM
662 };
663 struct v4l2_rect max_r = {
664 0, 0,
665 compose->width * MAX_ZOOM,
666 factor * compose->height * MAX_ZOOM
667 };
668
669 rect_set_min_size(crop, &min_r);
670 rect_set_max_size(crop, &max_r);
671 rect_map_inside(crop, &dev->crop_bounds_cap);
672 }
673 } else if (dev->has_crop_cap && !dev->has_compose_cap) {
674 r.height *= factor;
675 rect_set_size_to(crop, &r);
676 rect_map_inside(crop, &dev->crop_bounds_cap);
677 r = *crop;
678 r.height /= factor;
679 rect_set_size_to(compose, &r);
680 } else if (!dev->has_crop_cap) {
681 rect_map_inside(compose, &r);
682 } else {
683 r.height *= factor;
684 rect_set_max_size(crop, &r);
685 rect_map_inside(crop, &dev->crop_bounds_cap);
686 compose->top *= factor;
687 compose->height *= factor;
688 rect_set_size_to(compose, crop);
689 rect_map_inside(compose, &r);
690 compose->top /= factor;
691 compose->height /= factor;
692 }
693 } else if (vivid_is_webcam(dev)) {
694 /* Guaranteed to be a match */
695 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
696 if (webcam_sizes[i].width == mp->width &&
697 webcam_sizes[i].height == mp->height)
698 break;
699 dev->webcam_size_idx = i;
700 if (dev->webcam_ival_idx >= 2 * (3 - i))
701 dev->webcam_ival_idx = 2 * (3 - i) - 1;
702 vivid_update_format_cap(dev, false);
703 } else {
704 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
705
706 rect_set_size_to(compose, &r);
707 r.height *= factor;
708 rect_set_size_to(crop, &r);
709 }
710
711 dev->fmt_cap_rect.width = mp->width;
712 dev->fmt_cap_rect.height = mp->height;
713 tpg_s_buf_height(&dev->tpg, mp->height);
714 tpg_s_bytesperline(&dev->tpg, 0, mp->plane_fmt[0].bytesperline);
715 if (tpg_g_planes(&dev->tpg) > 1)
716 tpg_s_bytesperline(&dev->tpg, 1, mp->plane_fmt[1].bytesperline);
717 dev->field_cap = mp->field;
718 tpg_s_field(&dev->tpg, dev->field_cap);
719 tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
720 tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
721 if (vivid_is_sdtv_cap(dev))
722 dev->tv_field_cap = mp->field;
723 tpg_update_mv_step(&dev->tpg);
724 return 0;
725 }
726
vidioc_g_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)727 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
728 struct v4l2_format *f)
729 {
730 struct vivid_dev *dev = video_drvdata(file);
731
732 if (!dev->multiplanar)
733 return -ENOTTY;
734 return vivid_g_fmt_vid_cap(file, priv, f);
735 }
736
vidioc_try_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)737 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
738 struct v4l2_format *f)
739 {
740 struct vivid_dev *dev = video_drvdata(file);
741
742 if (!dev->multiplanar)
743 return -ENOTTY;
744 return vivid_try_fmt_vid_cap(file, priv, f);
745 }
746
vidioc_s_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)747 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
748 struct v4l2_format *f)
749 {
750 struct vivid_dev *dev = video_drvdata(file);
751
752 if (!dev->multiplanar)
753 return -ENOTTY;
754 return vivid_s_fmt_vid_cap(file, priv, f);
755 }
756
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)757 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
758 struct v4l2_format *f)
759 {
760 struct vivid_dev *dev = video_drvdata(file);
761
762 if (dev->multiplanar)
763 return -ENOTTY;
764 return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
765 }
766
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)767 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
768 struct v4l2_format *f)
769 {
770 struct vivid_dev *dev = video_drvdata(file);
771
772 if (dev->multiplanar)
773 return -ENOTTY;
774 return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
775 }
776
vidioc_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)777 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
778 struct v4l2_format *f)
779 {
780 struct vivid_dev *dev = video_drvdata(file);
781
782 if (dev->multiplanar)
783 return -ENOTTY;
784 return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
785 }
786
vivid_vid_cap_g_selection(struct file * file,void * priv,struct v4l2_selection * sel)787 int vivid_vid_cap_g_selection(struct file *file, void *priv,
788 struct v4l2_selection *sel)
789 {
790 struct vivid_dev *dev = video_drvdata(file);
791
792 if (!dev->has_crop_cap && !dev->has_compose_cap)
793 return -ENOTTY;
794 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
795 return -EINVAL;
796 if (vivid_is_webcam(dev))
797 return -EINVAL;
798
799 sel->r.left = sel->r.top = 0;
800 switch (sel->target) {
801 case V4L2_SEL_TGT_CROP:
802 if (!dev->has_crop_cap)
803 return -EINVAL;
804 sel->r = dev->crop_cap;
805 break;
806 case V4L2_SEL_TGT_CROP_DEFAULT:
807 case V4L2_SEL_TGT_CROP_BOUNDS:
808 if (!dev->has_crop_cap)
809 return -EINVAL;
810 sel->r = dev->src_rect;
811 break;
812 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
813 if (!dev->has_compose_cap)
814 return -EINVAL;
815 sel->r = vivid_max_rect;
816 break;
817 case V4L2_SEL_TGT_COMPOSE:
818 if (!dev->has_compose_cap)
819 return -EINVAL;
820 sel->r = dev->compose_cap;
821 break;
822 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
823 if (!dev->has_compose_cap)
824 return -EINVAL;
825 sel->r = dev->fmt_cap_rect;
826 break;
827 default:
828 return -EINVAL;
829 }
830 return 0;
831 }
832
vivid_vid_cap_s_selection(struct file * file,void * fh,struct v4l2_selection * s)833 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
834 {
835 struct vivid_dev *dev = video_drvdata(file);
836 struct v4l2_rect *crop = &dev->crop_cap;
837 struct v4l2_rect *compose = &dev->compose_cap;
838 unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
839 int ret;
840
841 if (!dev->has_crop_cap && !dev->has_compose_cap)
842 return -ENOTTY;
843 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
844 return -EINVAL;
845 if (vivid_is_webcam(dev))
846 return -EINVAL;
847
848 switch (s->target) {
849 case V4L2_SEL_TGT_CROP:
850 if (!dev->has_crop_cap)
851 return -EINVAL;
852 ret = vivid_vid_adjust_sel(s->flags, &s->r);
853 if (ret)
854 return ret;
855 rect_set_min_size(&s->r, &vivid_min_rect);
856 rect_set_max_size(&s->r, &dev->src_rect);
857 rect_map_inside(&s->r, &dev->crop_bounds_cap);
858 s->r.top /= factor;
859 s->r.height /= factor;
860 if (dev->has_scaler_cap) {
861 struct v4l2_rect fmt = dev->fmt_cap_rect;
862 struct v4l2_rect max_rect = {
863 0, 0,
864 s->r.width * MAX_ZOOM,
865 s->r.height * MAX_ZOOM
866 };
867 struct v4l2_rect min_rect = {
868 0, 0,
869 s->r.width / MAX_ZOOM,
870 s->r.height / MAX_ZOOM
871 };
872
873 rect_set_min_size(&fmt, &min_rect);
874 if (!dev->has_compose_cap)
875 rect_set_max_size(&fmt, &max_rect);
876 if (!rect_same_size(&dev->fmt_cap_rect, &fmt) &&
877 vb2_is_busy(&dev->vb_vid_cap_q))
878 return -EBUSY;
879 if (dev->has_compose_cap) {
880 rect_set_min_size(compose, &min_rect);
881 rect_set_max_size(compose, &max_rect);
882 }
883 dev->fmt_cap_rect = fmt;
884 tpg_s_buf_height(&dev->tpg, fmt.height);
885 } else if (dev->has_compose_cap) {
886 struct v4l2_rect fmt = dev->fmt_cap_rect;
887
888 rect_set_min_size(&fmt, &s->r);
889 if (!rect_same_size(&dev->fmt_cap_rect, &fmt) &&
890 vb2_is_busy(&dev->vb_vid_cap_q))
891 return -EBUSY;
892 dev->fmt_cap_rect = fmt;
893 tpg_s_buf_height(&dev->tpg, fmt.height);
894 rect_set_size_to(compose, &s->r);
895 rect_map_inside(compose, &dev->fmt_cap_rect);
896 } else {
897 if (!rect_same_size(&s->r, &dev->fmt_cap_rect) &&
898 vb2_is_busy(&dev->vb_vid_cap_q))
899 return -EBUSY;
900 rect_set_size_to(&dev->fmt_cap_rect, &s->r);
901 rect_set_size_to(compose, &s->r);
902 rect_map_inside(compose, &dev->fmt_cap_rect);
903 tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
904 }
905 s->r.top *= factor;
906 s->r.height *= factor;
907 *crop = s->r;
908 break;
909 case V4L2_SEL_TGT_COMPOSE:
910 if (!dev->has_compose_cap)
911 return -EINVAL;
912 ret = vivid_vid_adjust_sel(s->flags, &s->r);
913 if (ret)
914 return ret;
915 rect_set_min_size(&s->r, &vivid_min_rect);
916 rect_set_max_size(&s->r, &dev->fmt_cap_rect);
917 if (dev->has_scaler_cap) {
918 struct v4l2_rect max_rect = {
919 0, 0,
920 dev->src_rect.width * MAX_ZOOM,
921 (dev->src_rect.height / factor) * MAX_ZOOM
922 };
923
924 rect_set_max_size(&s->r, &max_rect);
925 if (dev->has_crop_cap) {
926 struct v4l2_rect min_rect = {
927 0, 0,
928 s->r.width / MAX_ZOOM,
929 (s->r.height * factor) / MAX_ZOOM
930 };
931 struct v4l2_rect max_rect = {
932 0, 0,
933 s->r.width * MAX_ZOOM,
934 (s->r.height * factor) * MAX_ZOOM
935 };
936
937 rect_set_min_size(crop, &min_rect);
938 rect_set_max_size(crop, &max_rect);
939 rect_map_inside(crop, &dev->crop_bounds_cap);
940 }
941 } else if (dev->has_crop_cap) {
942 s->r.top *= factor;
943 s->r.height *= factor;
944 rect_set_max_size(&s->r, &dev->src_rect);
945 rect_set_size_to(crop, &s->r);
946 rect_map_inside(crop, &dev->crop_bounds_cap);
947 s->r.top /= factor;
948 s->r.height /= factor;
949 } else {
950 rect_set_size_to(&s->r, &dev->src_rect);
951 s->r.height /= factor;
952 }
953 rect_map_inside(&s->r, &dev->fmt_cap_rect);
954 if (dev->bitmap_cap && (compose->width != s->r.width ||
955 compose->height != s->r.height)) {
956 kfree(dev->bitmap_cap);
957 dev->bitmap_cap = NULL;
958 }
959 *compose = s->r;
960 break;
961 default:
962 return -EINVAL;
963 }
964
965 tpg_s_crop_compose(&dev->tpg, crop, compose);
966 return 0;
967 }
968
vivid_vid_cap_cropcap(struct file * file,void * priv,struct v4l2_cropcap * cap)969 int vivid_vid_cap_cropcap(struct file *file, void *priv,
970 struct v4l2_cropcap *cap)
971 {
972 struct vivid_dev *dev = video_drvdata(file);
973
974 if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
975 return -EINVAL;
976
977 switch (vivid_get_pixel_aspect(dev)) {
978 case TPG_PIXEL_ASPECT_NTSC:
979 cap->pixelaspect.numerator = 11;
980 cap->pixelaspect.denominator = 10;
981 break;
982 case TPG_PIXEL_ASPECT_PAL:
983 cap->pixelaspect.numerator = 54;
984 cap->pixelaspect.denominator = 59;
985 break;
986 case TPG_PIXEL_ASPECT_SQUARE:
987 cap->pixelaspect.numerator = 1;
988 cap->pixelaspect.denominator = 1;
989 break;
990 }
991 return 0;
992 }
993
vidioc_enum_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_fmtdesc * f)994 int vidioc_enum_fmt_vid_overlay(struct file *file, void *priv,
995 struct v4l2_fmtdesc *f)
996 {
997 const struct vivid_fmt *fmt;
998
999 if (f->index >= ARRAY_SIZE(formats_ovl))
1000 return -EINVAL;
1001
1002 fmt = &formats_ovl[f->index];
1003
1004 strlcpy(f->description, fmt->name, sizeof(f->description));
1005 f->pixelformat = fmt->fourcc;
1006 return 0;
1007 }
1008
vidioc_g_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1009 int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
1010 struct v4l2_format *f)
1011 {
1012 struct vivid_dev *dev = video_drvdata(file);
1013 const struct v4l2_rect *compose = &dev->compose_cap;
1014 struct v4l2_window *win = &f->fmt.win;
1015 unsigned clipcount = win->clipcount;
1016
1017 win->w.top = dev->overlay_cap_top;
1018 win->w.left = dev->overlay_cap_left;
1019 win->w.width = compose->width;
1020 win->w.height = compose->height;
1021 win->field = dev->overlay_cap_field;
1022 win->clipcount = dev->clipcount_cap;
1023 if (clipcount > dev->clipcount_cap)
1024 clipcount = dev->clipcount_cap;
1025 if (dev->bitmap_cap == NULL)
1026 win->bitmap = NULL;
1027 else if (win->bitmap) {
1028 if (copy_to_user(win->bitmap, dev->bitmap_cap,
1029 ((compose->width + 7) / 8) * compose->height))
1030 return -EFAULT;
1031 }
1032 if (clipcount && win->clips) {
1033 if (copy_to_user(win->clips, dev->clips_cap,
1034 clipcount * sizeof(dev->clips_cap[0])))
1035 return -EFAULT;
1036 }
1037 return 0;
1038 }
1039
vidioc_try_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1040 int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
1041 struct v4l2_format *f)
1042 {
1043 struct vivid_dev *dev = video_drvdata(file);
1044 const struct v4l2_rect *compose = &dev->compose_cap;
1045 struct v4l2_window *win = &f->fmt.win;
1046 int i, j;
1047
1048 win->w.left = clamp_t(int, win->w.left,
1049 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1050 win->w.top = clamp_t(int, win->w.top,
1051 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1052 win->w.width = compose->width;
1053 win->w.height = compose->height;
1054 if (win->field != V4L2_FIELD_BOTTOM && win->field != V4L2_FIELD_TOP)
1055 win->field = V4L2_FIELD_ANY;
1056 win->chromakey = 0;
1057 win->global_alpha = 0;
1058 if (win->clipcount && !win->clips)
1059 win->clipcount = 0;
1060 if (win->clipcount > MAX_CLIPS)
1061 win->clipcount = MAX_CLIPS;
1062 if (win->clipcount) {
1063 if (copy_from_user(dev->try_clips_cap, win->clips,
1064 win->clipcount * sizeof(dev->clips_cap[0])))
1065 return -EFAULT;
1066 for (i = 0; i < win->clipcount; i++) {
1067 struct v4l2_rect *r = &dev->try_clips_cap[i].c;
1068
1069 r->top = clamp_t(s32, r->top, 0, dev->fb_cap.fmt.height - 1);
1070 r->height = clamp_t(s32, r->height, 1, dev->fb_cap.fmt.height - r->top);
1071 r->left = clamp_t(u32, r->left, 0, dev->fb_cap.fmt.width - 1);
1072 r->width = clamp_t(u32, r->width, 1, dev->fb_cap.fmt.width - r->left);
1073 }
1074 /*
1075 * Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
1076 * number and it's typically a one-time deal.
1077 */
1078 for (i = 0; i < win->clipcount - 1; i++) {
1079 struct v4l2_rect *r1 = &dev->try_clips_cap[i].c;
1080
1081 for (j = i + 1; j < win->clipcount; j++) {
1082 struct v4l2_rect *r2 = &dev->try_clips_cap[j].c;
1083
1084 if (rect_overlap(r1, r2))
1085 return -EINVAL;
1086 }
1087 }
1088 if (copy_to_user(win->clips, dev->try_clips_cap,
1089 win->clipcount * sizeof(dev->clips_cap[0])))
1090 return -EFAULT;
1091 }
1092 return 0;
1093 }
1094
vidioc_s_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1095 int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
1096 struct v4l2_format *f)
1097 {
1098 struct vivid_dev *dev = video_drvdata(file);
1099 const struct v4l2_rect *compose = &dev->compose_cap;
1100 struct v4l2_window *win = &f->fmt.win;
1101 int ret = vidioc_try_fmt_vid_overlay(file, priv, f);
1102 unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
1103 unsigned clips_size = win->clipcount * sizeof(dev->clips_cap[0]);
1104 void *new_bitmap = NULL;
1105
1106 if (ret)
1107 return ret;
1108
1109 if (win->bitmap) {
1110 new_bitmap = vzalloc(bitmap_size);
1111
1112 if (new_bitmap == NULL)
1113 return -ENOMEM;
1114 if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
1115 vfree(new_bitmap);
1116 return -EFAULT;
1117 }
1118 }
1119
1120 dev->overlay_cap_top = win->w.top;
1121 dev->overlay_cap_left = win->w.left;
1122 dev->overlay_cap_field = win->field;
1123 vfree(dev->bitmap_cap);
1124 dev->bitmap_cap = new_bitmap;
1125 dev->clipcount_cap = win->clipcount;
1126 if (dev->clipcount_cap)
1127 memcpy(dev->clips_cap, dev->try_clips_cap, clips_size);
1128 return 0;
1129 }
1130
vivid_vid_cap_overlay(struct file * file,void * fh,unsigned i)1131 int vivid_vid_cap_overlay(struct file *file, void *fh, unsigned i)
1132 {
1133 struct vivid_dev *dev = video_drvdata(file);
1134
1135 if (i && dev->fb_vbase_cap == NULL)
1136 return -EINVAL;
1137
1138 if (i && dev->fb_cap.fmt.pixelformat != dev->fmt_cap->fourcc) {
1139 dprintk(dev, 1, "mismatch between overlay and video capture pixelformats\n");
1140 return -EINVAL;
1141 }
1142
1143 if (dev->overlay_cap_owner && dev->overlay_cap_owner != fh)
1144 return -EBUSY;
1145 dev->overlay_cap_owner = i ? fh : NULL;
1146 return 0;
1147 }
1148
vivid_vid_cap_g_fbuf(struct file * file,void * fh,struct v4l2_framebuffer * a)1149 int vivid_vid_cap_g_fbuf(struct file *file, void *fh,
1150 struct v4l2_framebuffer *a)
1151 {
1152 struct vivid_dev *dev = video_drvdata(file);
1153
1154 *a = dev->fb_cap;
1155 a->capability = V4L2_FBUF_CAP_BITMAP_CLIPPING |
1156 V4L2_FBUF_CAP_LIST_CLIPPING;
1157 a->flags = V4L2_FBUF_FLAG_PRIMARY;
1158 a->fmt.field = V4L2_FIELD_NONE;
1159 a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1160 a->fmt.priv = 0;
1161 return 0;
1162 }
1163
vivid_vid_cap_s_fbuf(struct file * file,void * fh,const struct v4l2_framebuffer * a)1164 int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
1165 const struct v4l2_framebuffer *a)
1166 {
1167 struct vivid_dev *dev = video_drvdata(file);
1168 const struct vivid_fmt *fmt;
1169
1170 if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1171 return -EPERM;
1172
1173 if (dev->overlay_cap_owner)
1174 return -EBUSY;
1175
1176 if (a->base == NULL) {
1177 dev->fb_cap.base = NULL;
1178 dev->fb_vbase_cap = NULL;
1179 return 0;
1180 }
1181
1182 if (a->fmt.width < 48 || a->fmt.height < 32)
1183 return -EINVAL;
1184 fmt = vivid_get_format(dev, a->fmt.pixelformat);
1185 if (!fmt || !fmt->can_do_overlay)
1186 return -EINVAL;
1187 if (a->fmt.bytesperline < (a->fmt.width * fmt->depth) / 8)
1188 return -EINVAL;
1189 if (a->fmt.height * a->fmt.bytesperline < a->fmt.sizeimage)
1190 return -EINVAL;
1191
1192 dev->fb_vbase_cap = phys_to_virt((unsigned long)a->base);
1193 dev->fb_cap = *a;
1194 dev->overlay_cap_left = clamp_t(int, dev->overlay_cap_left,
1195 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1196 dev->overlay_cap_top = clamp_t(int, dev->overlay_cap_top,
1197 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1198 return 0;
1199 }
1200
1201 static const struct v4l2_audio vivid_audio_inputs[] = {
1202 { 0, "TV", V4L2_AUDCAP_STEREO },
1203 { 1, "Line-In", V4L2_AUDCAP_STEREO },
1204 };
1205
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * inp)1206 int vidioc_enum_input(struct file *file, void *priv,
1207 struct v4l2_input *inp)
1208 {
1209 struct vivid_dev *dev = video_drvdata(file);
1210
1211 if (inp->index >= dev->num_inputs)
1212 return -EINVAL;
1213
1214 inp->type = V4L2_INPUT_TYPE_CAMERA;
1215 switch (dev->input_type[inp->index]) {
1216 case WEBCAM:
1217 snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1218 dev->input_name_counter[inp->index]);
1219 inp->capabilities = 0;
1220 break;
1221 case TV:
1222 snprintf(inp->name, sizeof(inp->name), "TV %u",
1223 dev->input_name_counter[inp->index]);
1224 inp->type = V4L2_INPUT_TYPE_TUNER;
1225 inp->std = V4L2_STD_ALL;
1226 if (dev->has_audio_inputs)
1227 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1228 inp->capabilities = V4L2_IN_CAP_STD;
1229 break;
1230 case SVID:
1231 snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1232 dev->input_name_counter[inp->index]);
1233 inp->std = V4L2_STD_ALL;
1234 if (dev->has_audio_inputs)
1235 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1236 inp->capabilities = V4L2_IN_CAP_STD;
1237 break;
1238 case HDMI:
1239 snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1240 dev->input_name_counter[inp->index]);
1241 inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1242 if (dev->edid_blocks == 0 ||
1243 dev->dv_timings_signal_mode == NO_SIGNAL)
1244 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1245 else if (dev->dv_timings_signal_mode == NO_LOCK ||
1246 dev->dv_timings_signal_mode == OUT_OF_RANGE)
1247 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1248 break;
1249 }
1250 if (dev->sensor_hflip)
1251 inp->status |= V4L2_IN_ST_HFLIP;
1252 if (dev->sensor_vflip)
1253 inp->status |= V4L2_IN_ST_VFLIP;
1254 if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1255 if (dev->std_signal_mode == NO_SIGNAL) {
1256 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1257 } else if (dev->std_signal_mode == NO_LOCK) {
1258 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1259 } else if (vivid_is_tv_cap(dev)) {
1260 switch (tpg_g_quality(&dev->tpg)) {
1261 case TPG_QUAL_GRAY:
1262 inp->status |= V4L2_IN_ST_COLOR_KILL;
1263 break;
1264 case TPG_QUAL_NOISE:
1265 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1266 break;
1267 default:
1268 break;
1269 }
1270 }
1271 }
1272 return 0;
1273 }
1274
vidioc_g_input(struct file * file,void * priv,unsigned * i)1275 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1276 {
1277 struct vivid_dev *dev = video_drvdata(file);
1278
1279 *i = dev->input;
1280 return 0;
1281 }
1282
vidioc_s_input(struct file * file,void * priv,unsigned i)1283 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1284 {
1285 struct vivid_dev *dev = video_drvdata(file);
1286 struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
1287 unsigned brightness;
1288
1289 if (i >= dev->num_inputs)
1290 return -EINVAL;
1291
1292 if (i == dev->input)
1293 return 0;
1294
1295 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1296 return -EBUSY;
1297
1298 dev->input = i;
1299 dev->vid_cap_dev.tvnorms = 0;
1300 if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1301 dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1302 dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1303 }
1304 dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1305 vivid_update_format_cap(dev, false);
1306
1307 if (dev->colorspace) {
1308 switch (dev->input_type[i]) {
1309 case WEBCAM:
1310 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SRGB);
1311 break;
1312 case TV:
1313 case SVID:
1314 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SMPTE170M);
1315 break;
1316 case HDMI:
1317 if (bt->standards & V4L2_DV_BT_STD_CEA861) {
1318 if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1319 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SMPTE170M);
1320 else
1321 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_REC709);
1322 } else {
1323 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SRGB);
1324 }
1325 break;
1326 }
1327 }
1328
1329 /*
1330 * Modify the brightness range depending on the input.
1331 * This makes it easy to use vivid to test if applications can
1332 * handle control range modifications and is also how this is
1333 * typically used in practice as different inputs may be hooked
1334 * up to different receivers with different control ranges.
1335 */
1336 brightness = 128 * i + dev->input_brightness[i];
1337 v4l2_ctrl_modify_range(dev->brightness,
1338 128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1339 v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1340 return 0;
1341 }
1342
vidioc_enumaudio(struct file * file,void * fh,struct v4l2_audio * vin)1343 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1344 {
1345 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1346 return -EINVAL;
1347 *vin = vivid_audio_inputs[vin->index];
1348 return 0;
1349 }
1350
vidioc_g_audio(struct file * file,void * fh,struct v4l2_audio * vin)1351 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1352 {
1353 struct vivid_dev *dev = video_drvdata(file);
1354
1355 if (!vivid_is_sdtv_cap(dev))
1356 return -EINVAL;
1357 *vin = vivid_audio_inputs[dev->tv_audio_input];
1358 return 0;
1359 }
1360
vidioc_s_audio(struct file * file,void * fh,const struct v4l2_audio * vin)1361 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1362 {
1363 struct vivid_dev *dev = video_drvdata(file);
1364
1365 if (!vivid_is_sdtv_cap(dev))
1366 return -EINVAL;
1367 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1368 return -EINVAL;
1369 dev->tv_audio_input = vin->index;
1370 return 0;
1371 }
1372
vivid_video_g_frequency(struct file * file,void * fh,struct v4l2_frequency * vf)1373 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1374 {
1375 struct vivid_dev *dev = video_drvdata(file);
1376
1377 if (vf->tuner != 0)
1378 return -EINVAL;
1379 vf->frequency = dev->tv_freq;
1380 return 0;
1381 }
1382
vivid_video_s_frequency(struct file * file,void * fh,const struct v4l2_frequency * vf)1383 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1384 {
1385 struct vivid_dev *dev = video_drvdata(file);
1386
1387 if (vf->tuner != 0)
1388 return -EINVAL;
1389 dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1390 if (vivid_is_tv_cap(dev))
1391 vivid_update_quality(dev);
1392 return 0;
1393 }
1394
vivid_video_s_tuner(struct file * file,void * fh,const struct v4l2_tuner * vt)1395 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1396 {
1397 struct vivid_dev *dev = video_drvdata(file);
1398
1399 if (vt->index != 0)
1400 return -EINVAL;
1401 if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1402 return -EINVAL;
1403 dev->tv_audmode = vt->audmode;
1404 return 0;
1405 }
1406
vivid_video_g_tuner(struct file * file,void * fh,struct v4l2_tuner * vt)1407 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1408 {
1409 struct vivid_dev *dev = video_drvdata(file);
1410 enum tpg_quality qual;
1411
1412 if (vt->index != 0)
1413 return -EINVAL;
1414
1415 vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1416 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1417 vt->audmode = dev->tv_audmode;
1418 vt->rangelow = MIN_TV_FREQ;
1419 vt->rangehigh = MAX_TV_FREQ;
1420 qual = vivid_get_quality(dev, &vt->afc);
1421 if (qual == TPG_QUAL_COLOR)
1422 vt->signal = 0xffff;
1423 else if (qual == TPG_QUAL_GRAY)
1424 vt->signal = 0x8000;
1425 else
1426 vt->signal = 0;
1427 if (qual == TPG_QUAL_NOISE) {
1428 vt->rxsubchans = 0;
1429 } else if (qual == TPG_QUAL_GRAY) {
1430 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1431 } else {
1432 unsigned channel_nr = dev->tv_freq / (6 * 16);
1433 unsigned options = (dev->std_cap & V4L2_STD_NTSC_M) ? 4 : 3;
1434
1435 switch (channel_nr % options) {
1436 case 0:
1437 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1438 break;
1439 case 1:
1440 vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1441 break;
1442 case 2:
1443 if (dev->std_cap & V4L2_STD_NTSC_M)
1444 vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1445 else
1446 vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1447 break;
1448 case 3:
1449 vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1450 break;
1451 }
1452 }
1453 strlcpy(vt->name, "TV Tuner", sizeof(vt->name));
1454 return 0;
1455 }
1456
1457 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1458 const v4l2_std_id vivid_standard[] = {
1459 V4L2_STD_NTSC_M,
1460 V4L2_STD_NTSC_M_JP,
1461 V4L2_STD_NTSC_M_KR,
1462 V4L2_STD_NTSC_443,
1463 V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1464 V4L2_STD_PAL_I,
1465 V4L2_STD_PAL_DK,
1466 V4L2_STD_PAL_M,
1467 V4L2_STD_PAL_N,
1468 V4L2_STD_PAL_Nc,
1469 V4L2_STD_PAL_60,
1470 V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1471 V4L2_STD_SECAM_DK,
1472 V4L2_STD_SECAM_L,
1473 V4L2_STD_SECAM_LC,
1474 V4L2_STD_UNKNOWN
1475 };
1476
1477 /* Must remain in sync with the vivid_standard array */
1478 const char * const vivid_ctrl_standard_strings[] = {
1479 "NTSC-M",
1480 "NTSC-M-JP",
1481 "NTSC-M-KR",
1482 "NTSC-443",
1483 "PAL-BGH",
1484 "PAL-I",
1485 "PAL-DK",
1486 "PAL-M",
1487 "PAL-N",
1488 "PAL-Nc",
1489 "PAL-60",
1490 "SECAM-BGH",
1491 "SECAM-DK",
1492 "SECAM-L",
1493 "SECAM-Lc",
1494 NULL,
1495 };
1496
vidioc_querystd(struct file * file,void * priv,v4l2_std_id * id)1497 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1498 {
1499 struct vivid_dev *dev = video_drvdata(file);
1500
1501 if (!vivid_is_sdtv_cap(dev))
1502 return -ENODATA;
1503 if (dev->std_signal_mode == NO_SIGNAL ||
1504 dev->std_signal_mode == NO_LOCK) {
1505 *id = V4L2_STD_UNKNOWN;
1506 return 0;
1507 }
1508 if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1509 *id = V4L2_STD_UNKNOWN;
1510 } else if (dev->std_signal_mode == CURRENT_STD) {
1511 *id = dev->std_cap;
1512 } else if (dev->std_signal_mode == SELECTED_STD) {
1513 *id = dev->query_std;
1514 } else {
1515 *id = vivid_standard[dev->query_std_last];
1516 dev->query_std_last = (dev->query_std_last + 1) % ARRAY_SIZE(vivid_standard);
1517 }
1518
1519 return 0;
1520 }
1521
vivid_vid_cap_s_std(struct file * file,void * priv,v4l2_std_id id)1522 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1523 {
1524 struct vivid_dev *dev = video_drvdata(file);
1525
1526 if (!vivid_is_sdtv_cap(dev))
1527 return -ENODATA;
1528 if (dev->std_cap == id)
1529 return 0;
1530 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1531 return -EBUSY;
1532 dev->std_cap = id;
1533 vivid_update_format_cap(dev, false);
1534 return 0;
1535 }
1536
vivid_vid_cap_s_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1537 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1538 struct v4l2_dv_timings *timings)
1539 {
1540 struct vivid_dev *dev = video_drvdata(file);
1541
1542 if (!vivid_is_hdmi_cap(dev))
1543 return -ENODATA;
1544 if (vb2_is_busy(&dev->vb_vid_cap_q))
1545 return -EBUSY;
1546 if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1547 0, NULL, NULL))
1548 return -EINVAL;
1549 if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap, 0))
1550 return 0;
1551 dev->dv_timings_cap = *timings;
1552 vivid_update_format_cap(dev, false);
1553 return 0;
1554 }
1555
vidioc_query_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1556 int vidioc_query_dv_timings(struct file *file, void *_fh,
1557 struct v4l2_dv_timings *timings)
1558 {
1559 struct vivid_dev *dev = video_drvdata(file);
1560
1561 if (!vivid_is_hdmi_cap(dev))
1562 return -ENODATA;
1563 if (dev->dv_timings_signal_mode == NO_SIGNAL ||
1564 dev->edid_blocks == 0)
1565 return -ENOLINK;
1566 if (dev->dv_timings_signal_mode == NO_LOCK)
1567 return -ENOLCK;
1568 if (dev->dv_timings_signal_mode == OUT_OF_RANGE) {
1569 timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1570 return -ERANGE;
1571 }
1572 if (dev->dv_timings_signal_mode == CURRENT_DV_TIMINGS) {
1573 *timings = dev->dv_timings_cap;
1574 } else if (dev->dv_timings_signal_mode == SELECTED_DV_TIMINGS) {
1575 *timings = v4l2_dv_timings_presets[dev->query_dv_timings];
1576 } else {
1577 *timings = v4l2_dv_timings_presets[dev->query_dv_timings_last];
1578 dev->query_dv_timings_last = (dev->query_dv_timings_last + 1) %
1579 dev->query_dv_timings_size;
1580 }
1581 return 0;
1582 }
1583
vidioc_s_edid(struct file * file,void * _fh,struct v4l2_edid * edid)1584 int vidioc_s_edid(struct file *file, void *_fh,
1585 struct v4l2_edid *edid)
1586 {
1587 struct vivid_dev *dev = video_drvdata(file);
1588
1589 memset(edid->reserved, 0, sizeof(edid->reserved));
1590 if (edid->pad >= dev->num_inputs)
1591 return -EINVAL;
1592 if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1593 return -EINVAL;
1594 if (edid->blocks == 0) {
1595 dev->edid_blocks = 0;
1596 return 0;
1597 }
1598 if (edid->blocks > dev->edid_max_blocks) {
1599 edid->blocks = dev->edid_max_blocks;
1600 return -E2BIG;
1601 }
1602 dev->edid_blocks = edid->blocks;
1603 memcpy(dev->edid, edid->edid, edid->blocks * 128);
1604 return 0;
1605 }
1606
vidioc_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)1607 int vidioc_enum_framesizes(struct file *file, void *fh,
1608 struct v4l2_frmsizeenum *fsize)
1609 {
1610 struct vivid_dev *dev = video_drvdata(file);
1611
1612 if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1613 return -EINVAL;
1614 if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1615 return -EINVAL;
1616 if (vivid_is_webcam(dev)) {
1617 if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1618 return -EINVAL;
1619 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1620 fsize->discrete = webcam_sizes[fsize->index];
1621 return 0;
1622 }
1623 if (fsize->index)
1624 return -EINVAL;
1625 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1626 fsize->stepwise.min_width = MIN_WIDTH;
1627 fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1628 fsize->stepwise.step_width = 2;
1629 fsize->stepwise.min_height = MIN_HEIGHT;
1630 fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1631 fsize->stepwise.step_height = 2;
1632 return 0;
1633 }
1634
1635 /* timeperframe is arbitrary and continuous */
vidioc_enum_frameintervals(struct file * file,void * priv,struct v4l2_frmivalenum * fival)1636 int vidioc_enum_frameintervals(struct file *file, void *priv,
1637 struct v4l2_frmivalenum *fival)
1638 {
1639 struct vivid_dev *dev = video_drvdata(file);
1640 const struct vivid_fmt *fmt;
1641 int i;
1642
1643 fmt = vivid_get_format(dev, fival->pixel_format);
1644 if (!fmt)
1645 return -EINVAL;
1646
1647 if (!vivid_is_webcam(dev)) {
1648 static const struct v4l2_fract step = { 1, 1 };
1649
1650 if (fival->index)
1651 return -EINVAL;
1652 if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1653 return -EINVAL;
1654 if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1655 return -EINVAL;
1656 fival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
1657 fival->stepwise.min = tpf_min;
1658 fival->stepwise.max = tpf_max;
1659 fival->stepwise.step = step;
1660 return 0;
1661 }
1662
1663 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1664 if (fival->width == webcam_sizes[i].width &&
1665 fival->height == webcam_sizes[i].height)
1666 break;
1667 if (i == ARRAY_SIZE(webcam_sizes))
1668 return -EINVAL;
1669 if (fival->index >= 2 * (3 - i))
1670 return -EINVAL;
1671 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1672 fival->discrete = webcam_intervals[fival->index];
1673 return 0;
1674 }
1675
vivid_vid_cap_g_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1676 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1677 struct v4l2_streamparm *parm)
1678 {
1679 struct vivid_dev *dev = video_drvdata(file);
1680
1681 if (parm->type != (dev->multiplanar ?
1682 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1683 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1684 return -EINVAL;
1685
1686 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1687 parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1688 parm->parm.capture.readbuffers = 1;
1689 return 0;
1690 }
1691
1692 #define FRACT_CMP(a, OP, b) \
1693 ((u64)(a).numerator * (b).denominator OP (u64)(b).numerator * (a).denominator)
1694
vivid_vid_cap_s_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1695 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1696 struct v4l2_streamparm *parm)
1697 {
1698 struct vivid_dev *dev = video_drvdata(file);
1699 unsigned ival_sz = 2 * (3 - dev->webcam_size_idx);
1700 struct v4l2_fract tpf;
1701 unsigned i;
1702
1703 if (parm->type != (dev->multiplanar ?
1704 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1705 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1706 return -EINVAL;
1707 if (!vivid_is_webcam(dev))
1708 return vivid_vid_cap_g_parm(file, priv, parm);
1709
1710 tpf = parm->parm.capture.timeperframe;
1711
1712 if (tpf.denominator == 0)
1713 tpf = webcam_intervals[ival_sz - 1];
1714 for (i = 0; i < ival_sz; i++)
1715 if (FRACT_CMP(tpf, >=, webcam_intervals[i]))
1716 break;
1717 if (i == ival_sz)
1718 i = ival_sz - 1;
1719 dev->webcam_ival_idx = i;
1720 tpf = webcam_intervals[dev->webcam_ival_idx];
1721 tpf = FRACT_CMP(tpf, <, tpf_min) ? tpf_min : tpf;
1722 tpf = FRACT_CMP(tpf, >, tpf_max) ? tpf_max : tpf;
1723
1724 /* resync the thread's timings */
1725 dev->cap_seq_resync = true;
1726 dev->timeperframe_vid_cap = tpf;
1727 parm->parm.capture.timeperframe = tpf;
1728 parm->parm.capture.readbuffers = 1;
1729 return 0;
1730 }
1731