1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * vivid-vid-cap.c - video capture support functions.
4 *
5 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
6 */
7
8 #include <linux/errno.h>
9 #include <linux/kernel.h>
10 #include <linux/sched.h>
11 #include <linux/vmalloc.h>
12 #include <linux/videodev2.h>
13 #include <linux/v4l2-dv-timings.h>
14 #include <media/v4l2-common.h>
15 #include <media/v4l2-event.h>
16 #include <media/v4l2-dv-timings.h>
17 #include <media/v4l2-rect.h>
18
19 #include "vivid-core.h"
20 #include "vivid-vid-common.h"
21 #include "vivid-kthread-cap.h"
22 #include "vivid-vid-cap.h"
23
24 /* Sizes must be in increasing order */
25 static const struct v4l2_frmsize_discrete webcam_sizes[] = {
26 { 320, 180 },
27 { 640, 360 },
28 { 640, 480 },
29 { 1280, 720 },
30 { 1920, 1080 },
31 { 3840, 2160 },
32 };
33
34 /*
35 * Intervals must be in increasing order and there must be twice as many
36 * elements in this array as there are in webcam_sizes.
37 */
38 static const struct v4l2_fract webcam_intervals[] = {
39 { 1, 1 },
40 { 1, 2 },
41 { 1, 4 },
42 { 1, 5 },
43 { 1, 10 },
44 { 2, 25 },
45 { 1, 15 }, /* 7 - maximum for 2160p */
46 { 1, 25 },
47 { 1, 30 }, /* 9 - maximum for 1080p */
48 { 1, 40 },
49 { 1, 50 },
50 { 1, 60 }, /* 12 - maximum for 720p */
51 { 1, 120 },
52 };
53
54 /* Limit maximum FPS rates for high resolutions */
55 #define IVAL_COUNT_720P 12 /* 720p and up is limited to 60 fps */
56 #define IVAL_COUNT_1080P 9 /* 1080p and up is limited to 30 fps */
57 #define IVAL_COUNT_2160P 7 /* 2160p and up is limited to 15 fps */
58
webcam_ival_count(const struct vivid_dev * dev,unsigned int frmsize_idx)59 static inline unsigned int webcam_ival_count(const struct vivid_dev *dev,
60 unsigned int frmsize_idx)
61 {
62 if (webcam_sizes[frmsize_idx].height >= 2160)
63 return IVAL_COUNT_2160P;
64
65 if (webcam_sizes[frmsize_idx].height >= 1080)
66 return IVAL_COUNT_1080P;
67
68 if (webcam_sizes[frmsize_idx].height >= 720)
69 return IVAL_COUNT_720P;
70
71 /* For low resolutions, allow all FPS rates */
72 return ARRAY_SIZE(webcam_intervals);
73 }
74
vid_cap_queue_setup(struct vb2_queue * vq,unsigned * nbuffers,unsigned * nplanes,unsigned sizes[],struct device * alloc_devs[])75 static int vid_cap_queue_setup(struct vb2_queue *vq,
76 unsigned *nbuffers, unsigned *nplanes,
77 unsigned sizes[], struct device *alloc_devs[])
78 {
79 struct vivid_dev *dev = vb2_get_drv_priv(vq);
80 unsigned buffers = tpg_g_buffers(&dev->tpg);
81 unsigned h = dev->fmt_cap_rect.height;
82 unsigned p;
83
84 if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
85 /*
86 * You cannot use read() with FIELD_ALTERNATE since the field
87 * information (TOP/BOTTOM) cannot be passed back to the user.
88 */
89 if (vb2_fileio_is_active(vq))
90 return -EINVAL;
91 }
92
93 if (dev->queue_setup_error) {
94 /*
95 * Error injection: test what happens if queue_setup() returns
96 * an error.
97 */
98 dev->queue_setup_error = false;
99 return -EINVAL;
100 }
101 if (*nplanes) {
102 /*
103 * Check if the number of requested planes match
104 * the number of buffers in the current format. You can't mix that.
105 */
106 if (*nplanes != buffers)
107 return -EINVAL;
108 for (p = 0; p < buffers; p++) {
109 if (sizes[p] < tpg_g_line_width(&dev->tpg, p) * h +
110 dev->fmt_cap->data_offset[p])
111 return -EINVAL;
112 }
113 } else {
114 for (p = 0; p < buffers; p++)
115 sizes[p] = (tpg_g_line_width(&dev->tpg, p) * h) /
116 dev->fmt_cap->vdownsampling[p] +
117 dev->fmt_cap->data_offset[p];
118 }
119
120 if (vq->num_buffers + *nbuffers < 2)
121 *nbuffers = 2 - vq->num_buffers;
122
123 *nplanes = buffers;
124
125 dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
126 for (p = 0; p < buffers; p++)
127 dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
128
129 return 0;
130 }
131
vid_cap_buf_prepare(struct vb2_buffer * vb)132 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
133 {
134 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
135 unsigned long size;
136 unsigned buffers = tpg_g_buffers(&dev->tpg);
137 unsigned p;
138
139 dprintk(dev, 1, "%s\n", __func__);
140
141 if (WARN_ON(NULL == dev->fmt_cap))
142 return -EINVAL;
143
144 if (dev->buf_prepare_error) {
145 /*
146 * Error injection: test what happens if buf_prepare() returns
147 * an error.
148 */
149 dev->buf_prepare_error = false;
150 return -EINVAL;
151 }
152 for (p = 0; p < buffers; p++) {
153 size = (tpg_g_line_width(&dev->tpg, p) *
154 dev->fmt_cap_rect.height) /
155 dev->fmt_cap->vdownsampling[p] +
156 dev->fmt_cap->data_offset[p];
157
158 if (vb2_plane_size(vb, p) < size) {
159 dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
160 __func__, p, vb2_plane_size(vb, p), size);
161 return -EINVAL;
162 }
163
164 vb2_set_plane_payload(vb, p, size);
165 vb->planes[p].data_offset = dev->fmt_cap->data_offset[p];
166 }
167
168 return 0;
169 }
170
vid_cap_buf_finish(struct vb2_buffer * vb)171 static void vid_cap_buf_finish(struct vb2_buffer *vb)
172 {
173 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
174 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
175 struct v4l2_timecode *tc = &vbuf->timecode;
176 unsigned fps = 25;
177 unsigned seq = vbuf->sequence;
178
179 if (!vivid_is_sdtv_cap(dev))
180 return;
181
182 /*
183 * Set the timecode. Rarely used, so it is interesting to
184 * test this.
185 */
186 vbuf->flags |= V4L2_BUF_FLAG_TIMECODE;
187 if (dev->std_cap[dev->input] & V4L2_STD_525_60)
188 fps = 30;
189 tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
190 tc->flags = 0;
191 tc->frames = seq % fps;
192 tc->seconds = (seq / fps) % 60;
193 tc->minutes = (seq / (60 * fps)) % 60;
194 tc->hours = (seq / (60 * 60 * fps)) % 24;
195 }
196
vid_cap_buf_queue(struct vb2_buffer * vb)197 static void vid_cap_buf_queue(struct vb2_buffer *vb)
198 {
199 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
200 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
201 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
202
203 dprintk(dev, 1, "%s\n", __func__);
204
205 spin_lock(&dev->slock);
206 list_add_tail(&buf->list, &dev->vid_cap_active);
207 spin_unlock(&dev->slock);
208 }
209
vid_cap_start_streaming(struct vb2_queue * vq,unsigned count)210 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
211 {
212 struct vivid_dev *dev = vb2_get_drv_priv(vq);
213 unsigned i;
214 int err;
215
216 if (vb2_is_streaming(&dev->vb_vid_out_q))
217 dev->can_loop_video = vivid_vid_can_loop(dev);
218
219 dev->vid_cap_seq_count = 0;
220 dprintk(dev, 1, "%s\n", __func__);
221 for (i = 0; i < VIDEO_MAX_FRAME; i++)
222 dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
223 if (dev->start_streaming_error) {
224 dev->start_streaming_error = false;
225 err = -EINVAL;
226 } else {
227 err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
228 }
229 if (err) {
230 struct vivid_buffer *buf, *tmp;
231
232 list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
233 list_del(&buf->list);
234 vb2_buffer_done(&buf->vb.vb2_buf,
235 VB2_BUF_STATE_QUEUED);
236 }
237 }
238 return err;
239 }
240
241 /* abort streaming and wait for last buffer */
vid_cap_stop_streaming(struct vb2_queue * vq)242 static void vid_cap_stop_streaming(struct vb2_queue *vq)
243 {
244 struct vivid_dev *dev = vb2_get_drv_priv(vq);
245
246 dprintk(dev, 1, "%s\n", __func__);
247 vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
248 dev->can_loop_video = false;
249 }
250
vid_cap_buf_request_complete(struct vb2_buffer * vb)251 static void vid_cap_buf_request_complete(struct vb2_buffer *vb)
252 {
253 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
254
255 v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vid_cap);
256 }
257
258 const struct vb2_ops vivid_vid_cap_qops = {
259 .queue_setup = vid_cap_queue_setup,
260 .buf_prepare = vid_cap_buf_prepare,
261 .buf_finish = vid_cap_buf_finish,
262 .buf_queue = vid_cap_buf_queue,
263 .start_streaming = vid_cap_start_streaming,
264 .stop_streaming = vid_cap_stop_streaming,
265 .buf_request_complete = vid_cap_buf_request_complete,
266 .wait_prepare = vb2_ops_wait_prepare,
267 .wait_finish = vb2_ops_wait_finish,
268 };
269
270 /*
271 * Determine the 'picture' quality based on the current TV frequency: either
272 * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
273 * signal or NOISE for no signal.
274 */
vivid_update_quality(struct vivid_dev * dev)275 void vivid_update_quality(struct vivid_dev *dev)
276 {
277 unsigned freq_modulus;
278
279 if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
280 /*
281 * The 'noise' will only be replaced by the actual video
282 * if the output video matches the input video settings.
283 */
284 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
285 return;
286 }
287 if (vivid_is_hdmi_cap(dev) &&
288 VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode[dev->input])) {
289 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
290 return;
291 }
292 if (vivid_is_sdtv_cap(dev) &&
293 VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) {
294 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
295 return;
296 }
297 if (!vivid_is_tv_cap(dev)) {
298 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
299 return;
300 }
301
302 /*
303 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
304 * From +/- 0.25 MHz around the channel there is color, and from
305 * +/- 1 MHz there is grayscale (chroma is lost).
306 * Everywhere else it is just noise.
307 */
308 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
309 if (freq_modulus > 2 * 16) {
310 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
311 next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
312 return;
313 }
314 if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
315 tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
316 else
317 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
318 }
319
320 /*
321 * Get the current picture quality and the associated afc value.
322 */
vivid_get_quality(struct vivid_dev * dev,s32 * afc)323 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
324 {
325 unsigned freq_modulus;
326
327 if (afc)
328 *afc = 0;
329 if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
330 tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
331 return tpg_g_quality(&dev->tpg);
332
333 /*
334 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
335 * From +/- 0.25 MHz around the channel there is color, and from
336 * +/- 1 MHz there is grayscale (chroma is lost).
337 * Everywhere else it is just gray.
338 */
339 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
340 if (afc)
341 *afc = freq_modulus - 1 * 16;
342 return TPG_QUAL_GRAY;
343 }
344
vivid_get_video_aspect(const struct vivid_dev * dev)345 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
346 {
347 if (vivid_is_sdtv_cap(dev))
348 return dev->std_aspect_ratio[dev->input];
349
350 if (vivid_is_hdmi_cap(dev))
351 return dev->dv_timings_aspect_ratio[dev->input];
352
353 return TPG_VIDEO_ASPECT_IMAGE;
354 }
355
vivid_get_pixel_aspect(const struct vivid_dev * dev)356 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
357 {
358 if (vivid_is_sdtv_cap(dev))
359 return (dev->std_cap[dev->input] & V4L2_STD_525_60) ?
360 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
361
362 if (vivid_is_hdmi_cap(dev) &&
363 dev->src_rect.width == 720 && dev->src_rect.height <= 576)
364 return dev->src_rect.height == 480 ?
365 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
366
367 return TPG_PIXEL_ASPECT_SQUARE;
368 }
369
370 /*
371 * Called whenever the format has to be reset which can occur when
372 * changing inputs, standard, timings, etc.
373 */
vivid_update_format_cap(struct vivid_dev * dev,bool keep_controls)374 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
375 {
376 struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
377 u32 dims[V4L2_CTRL_MAX_DIMS] = {};
378 unsigned size;
379 u64 pixelclock;
380
381 switch (dev->input_type[dev->input]) {
382 case WEBCAM:
383 default:
384 dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
385 dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
386 dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
387 dev->field_cap = V4L2_FIELD_NONE;
388 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
389 break;
390 case TV:
391 case SVID:
392 dev->field_cap = dev->tv_field_cap;
393 dev->src_rect.width = 720;
394 if (dev->std_cap[dev->input] & V4L2_STD_525_60) {
395 dev->src_rect.height = 480;
396 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
397 dev->service_set_cap = V4L2_SLICED_CAPTION_525;
398 } else {
399 dev->src_rect.height = 576;
400 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
401 dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
402 }
403 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
404 break;
405 case HDMI:
406 dev->src_rect.width = bt->width;
407 dev->src_rect.height = bt->height;
408 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
409 if (dev->reduced_fps && can_reduce_fps(bt)) {
410 pixelclock = div_u64(bt->pixelclock * 1000, 1001);
411 bt->flags |= V4L2_DV_FL_REDUCED_FPS;
412 } else {
413 pixelclock = bt->pixelclock;
414 bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
415 }
416 dev->timeperframe_vid_cap = (struct v4l2_fract) {
417 size / 100, (u32)pixelclock / 100
418 };
419 if (bt->interlaced)
420 dev->field_cap = V4L2_FIELD_ALTERNATE;
421 else
422 dev->field_cap = V4L2_FIELD_NONE;
423
424 /*
425 * We can be called from within s_ctrl, in that case we can't
426 * set/get controls. Luckily we don't need to in that case.
427 */
428 if (keep_controls || !dev->colorspace)
429 break;
430 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
431 if (bt->width == 720 && bt->height <= 576)
432 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
433 else
434 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
435 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
436 } else {
437 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
438 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
439 }
440 tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
441 break;
442 }
443 vivid_update_quality(dev);
444 tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
445 dev->crop_cap = dev->src_rect;
446 dev->crop_bounds_cap = dev->src_rect;
447 dev->compose_cap = dev->crop_cap;
448 if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
449 dev->compose_cap.height /= 2;
450 dev->fmt_cap_rect = dev->compose_cap;
451 tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
452 tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
453 tpg_update_mv_step(&dev->tpg);
454
455 /*
456 * We can be called from within s_ctrl, in that case we can't
457 * modify controls. Luckily we don't need to in that case.
458 */
459 if (keep_controls)
460 return;
461
462 dims[0] = roundup(dev->src_rect.width, PIXEL_ARRAY_DIV);
463 dims[1] = roundup(dev->src_rect.height, PIXEL_ARRAY_DIV);
464 v4l2_ctrl_modify_dimensions(dev->pixel_array, dims);
465 }
466
467 /* Map the field to something that is valid for the current input */
vivid_field_cap(struct vivid_dev * dev,enum v4l2_field field)468 static enum v4l2_field vivid_field_cap(struct vivid_dev *dev, enum v4l2_field field)
469 {
470 if (vivid_is_sdtv_cap(dev)) {
471 switch (field) {
472 case V4L2_FIELD_INTERLACED_TB:
473 case V4L2_FIELD_INTERLACED_BT:
474 case V4L2_FIELD_SEQ_TB:
475 case V4L2_FIELD_SEQ_BT:
476 case V4L2_FIELD_TOP:
477 case V4L2_FIELD_BOTTOM:
478 case V4L2_FIELD_ALTERNATE:
479 return field;
480 case V4L2_FIELD_INTERLACED:
481 default:
482 return V4L2_FIELD_INTERLACED;
483 }
484 }
485 if (vivid_is_hdmi_cap(dev))
486 return dev->dv_timings_cap[dev->input].bt.interlaced ?
487 V4L2_FIELD_ALTERNATE : V4L2_FIELD_NONE;
488 return V4L2_FIELD_NONE;
489 }
490
vivid_colorspace_cap(struct vivid_dev * dev)491 static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
492 {
493 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
494 return tpg_g_colorspace(&dev->tpg);
495 return dev->colorspace_out;
496 }
497
vivid_xfer_func_cap(struct vivid_dev * dev)498 static unsigned vivid_xfer_func_cap(struct vivid_dev *dev)
499 {
500 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
501 return tpg_g_xfer_func(&dev->tpg);
502 return dev->xfer_func_out;
503 }
504
vivid_ycbcr_enc_cap(struct vivid_dev * dev)505 static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
506 {
507 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
508 return tpg_g_ycbcr_enc(&dev->tpg);
509 return dev->ycbcr_enc_out;
510 }
511
vivid_hsv_enc_cap(struct vivid_dev * dev)512 static unsigned int vivid_hsv_enc_cap(struct vivid_dev *dev)
513 {
514 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
515 return tpg_g_hsv_enc(&dev->tpg);
516 return dev->hsv_enc_out;
517 }
518
vivid_quantization_cap(struct vivid_dev * dev)519 static unsigned vivid_quantization_cap(struct vivid_dev *dev)
520 {
521 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
522 return tpg_g_quantization(&dev->tpg);
523 return dev->quantization_out;
524 }
525
vivid_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)526 int vivid_g_fmt_vid_cap(struct file *file, void *priv,
527 struct v4l2_format *f)
528 {
529 struct vivid_dev *dev = video_drvdata(file);
530 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
531 unsigned p;
532
533 mp->width = dev->fmt_cap_rect.width;
534 mp->height = dev->fmt_cap_rect.height;
535 mp->field = dev->field_cap;
536 mp->pixelformat = dev->fmt_cap->fourcc;
537 mp->colorspace = vivid_colorspace_cap(dev);
538 mp->xfer_func = vivid_xfer_func_cap(dev);
539 if (dev->fmt_cap->color_enc == TGP_COLOR_ENC_HSV)
540 mp->hsv_enc = vivid_hsv_enc_cap(dev);
541 else
542 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
543 mp->quantization = vivid_quantization_cap(dev);
544 mp->num_planes = dev->fmt_cap->buffers;
545 for (p = 0; p < mp->num_planes; p++) {
546 mp->plane_fmt[p].bytesperline = tpg_g_bytesperline(&dev->tpg, p);
547 mp->plane_fmt[p].sizeimage =
548 (tpg_g_line_width(&dev->tpg, p) * mp->height) /
549 dev->fmt_cap->vdownsampling[p] +
550 dev->fmt_cap->data_offset[p];
551 }
552 return 0;
553 }
554
vivid_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)555 int vivid_try_fmt_vid_cap(struct file *file, void *priv,
556 struct v4l2_format *f)
557 {
558 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
559 struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
560 struct vivid_dev *dev = video_drvdata(file);
561 const struct vivid_fmt *fmt;
562 unsigned bytesperline, max_bpl;
563 unsigned factor = 1;
564 unsigned w, h;
565 unsigned p;
566 bool user_set_csc = !!(mp->flags & V4L2_PIX_FMT_FLAG_SET_CSC);
567
568 fmt = vivid_get_format(dev, mp->pixelformat);
569 if (!fmt) {
570 dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
571 mp->pixelformat);
572 mp->pixelformat = V4L2_PIX_FMT_YUYV;
573 fmt = vivid_get_format(dev, mp->pixelformat);
574 }
575
576 mp->field = vivid_field_cap(dev, mp->field);
577 if (vivid_is_webcam(dev)) {
578 const struct v4l2_frmsize_discrete *sz =
579 v4l2_find_nearest_size(webcam_sizes,
580 ARRAY_SIZE(webcam_sizes), width,
581 height, mp->width, mp->height);
582
583 w = sz->width;
584 h = sz->height;
585 } else if (vivid_is_sdtv_cap(dev)) {
586 w = 720;
587 h = (dev->std_cap[dev->input] & V4L2_STD_525_60) ? 480 : 576;
588 } else {
589 w = dev->src_rect.width;
590 h = dev->src_rect.height;
591 }
592 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
593 factor = 2;
594 if (vivid_is_webcam(dev) ||
595 (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
596 mp->width = w;
597 mp->height = h / factor;
598 } else {
599 struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
600
601 v4l2_rect_set_min_size(&r, &vivid_min_rect);
602 v4l2_rect_set_max_size(&r, &vivid_max_rect);
603 if (dev->has_scaler_cap && !dev->has_compose_cap) {
604 struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
605
606 v4l2_rect_set_max_size(&r, &max_r);
607 } else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
608 v4l2_rect_set_max_size(&r, &dev->src_rect);
609 } else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
610 v4l2_rect_set_min_size(&r, &dev->src_rect);
611 }
612 mp->width = r.width;
613 mp->height = r.height / factor;
614 }
615
616 /* This driver supports custom bytesperline values */
617
618 mp->num_planes = fmt->buffers;
619 for (p = 0; p < fmt->buffers; p++) {
620 /* Calculate the minimum supported bytesperline value */
621 bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
622 /* Calculate the maximum supported bytesperline value */
623 max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
624
625 if (pfmt[p].bytesperline > max_bpl)
626 pfmt[p].bytesperline = max_bpl;
627 if (pfmt[p].bytesperline < bytesperline)
628 pfmt[p].bytesperline = bytesperline;
629
630 pfmt[p].sizeimage = (pfmt[p].bytesperline * mp->height) /
631 fmt->vdownsampling[p] + fmt->data_offset[p];
632
633 memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
634 }
635 for (p = fmt->buffers; p < fmt->planes; p++)
636 pfmt[0].sizeimage += (pfmt[0].bytesperline * mp->height *
637 (fmt->bit_depth[p] / fmt->vdownsampling[p])) /
638 (fmt->bit_depth[0] / fmt->vdownsampling[0]);
639
640 if (!user_set_csc || !v4l2_is_colorspace_valid(mp->colorspace))
641 mp->colorspace = vivid_colorspace_cap(dev);
642
643 if (!user_set_csc || !v4l2_is_xfer_func_valid(mp->xfer_func))
644 mp->xfer_func = vivid_xfer_func_cap(dev);
645
646 if (fmt->color_enc == TGP_COLOR_ENC_HSV) {
647 if (!user_set_csc || !v4l2_is_hsv_enc_valid(mp->hsv_enc))
648 mp->hsv_enc = vivid_hsv_enc_cap(dev);
649 } else if (fmt->color_enc == TGP_COLOR_ENC_YCBCR) {
650 if (!user_set_csc || !v4l2_is_ycbcr_enc_valid(mp->ycbcr_enc))
651 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
652 } else {
653 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
654 }
655
656 if (fmt->color_enc == TGP_COLOR_ENC_YCBCR ||
657 fmt->color_enc == TGP_COLOR_ENC_RGB) {
658 if (!user_set_csc || !v4l2_is_quant_valid(mp->quantization))
659 mp->quantization = vivid_quantization_cap(dev);
660 } else {
661 mp->quantization = vivid_quantization_cap(dev);
662 }
663
664 memset(mp->reserved, 0, sizeof(mp->reserved));
665 return 0;
666 }
667
vivid_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)668 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
669 struct v4l2_format *f)
670 {
671 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
672 struct vivid_dev *dev = video_drvdata(file);
673 struct v4l2_rect *crop = &dev->crop_cap;
674 struct v4l2_rect *compose = &dev->compose_cap;
675 struct vb2_queue *q = &dev->vb_vid_cap_q;
676 int ret = vivid_try_fmt_vid_cap(file, priv, f);
677 unsigned factor = 1;
678 unsigned p;
679 unsigned i;
680
681 if (ret < 0)
682 return ret;
683
684 if (vb2_is_busy(q)) {
685 dprintk(dev, 1, "%s device busy\n", __func__);
686 return -EBUSY;
687 }
688
689 dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
690 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
691 factor = 2;
692
693 /* Note: the webcam input doesn't support scaling, cropping or composing */
694
695 if (!vivid_is_webcam(dev) &&
696 (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
697 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
698
699 if (dev->has_scaler_cap) {
700 if (dev->has_compose_cap)
701 v4l2_rect_map_inside(compose, &r);
702 else
703 *compose = r;
704 if (dev->has_crop_cap && !dev->has_compose_cap) {
705 struct v4l2_rect min_r = {
706 0, 0,
707 r.width / MAX_ZOOM,
708 factor * r.height / MAX_ZOOM
709 };
710 struct v4l2_rect max_r = {
711 0, 0,
712 r.width * MAX_ZOOM,
713 factor * r.height * MAX_ZOOM
714 };
715
716 v4l2_rect_set_min_size(crop, &min_r);
717 v4l2_rect_set_max_size(crop, &max_r);
718 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
719 } else if (dev->has_crop_cap) {
720 struct v4l2_rect min_r = {
721 0, 0,
722 compose->width / MAX_ZOOM,
723 factor * compose->height / MAX_ZOOM
724 };
725 struct v4l2_rect max_r = {
726 0, 0,
727 compose->width * MAX_ZOOM,
728 factor * compose->height * MAX_ZOOM
729 };
730
731 v4l2_rect_set_min_size(crop, &min_r);
732 v4l2_rect_set_max_size(crop, &max_r);
733 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
734 }
735 } else if (dev->has_crop_cap && !dev->has_compose_cap) {
736 r.height *= factor;
737 v4l2_rect_set_size_to(crop, &r);
738 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
739 r = *crop;
740 r.height /= factor;
741 v4l2_rect_set_size_to(compose, &r);
742 } else if (!dev->has_crop_cap) {
743 v4l2_rect_map_inside(compose, &r);
744 } else {
745 r.height *= factor;
746 v4l2_rect_set_max_size(crop, &r);
747 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
748 compose->top *= factor;
749 compose->height *= factor;
750 v4l2_rect_set_size_to(compose, crop);
751 v4l2_rect_map_inside(compose, &r);
752 compose->top /= factor;
753 compose->height /= factor;
754 }
755 } else if (vivid_is_webcam(dev)) {
756 unsigned int ival_sz = webcam_ival_count(dev, dev->webcam_size_idx);
757
758 /* Guaranteed to be a match */
759 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
760 if (webcam_sizes[i].width == mp->width &&
761 webcam_sizes[i].height == mp->height)
762 break;
763 dev->webcam_size_idx = i;
764 if (dev->webcam_ival_idx >= ival_sz)
765 dev->webcam_ival_idx = ival_sz - 1;
766 vivid_update_format_cap(dev, false);
767 } else {
768 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
769
770 v4l2_rect_set_size_to(compose, &r);
771 r.height *= factor;
772 v4l2_rect_set_size_to(crop, &r);
773 }
774
775 dev->fmt_cap_rect.width = mp->width;
776 dev->fmt_cap_rect.height = mp->height;
777 tpg_s_buf_height(&dev->tpg, mp->height);
778 tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
779 for (p = 0; p < tpg_g_buffers(&dev->tpg); p++)
780 tpg_s_bytesperline(&dev->tpg, p, mp->plane_fmt[p].bytesperline);
781 dev->field_cap = mp->field;
782 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
783 tpg_s_field(&dev->tpg, V4L2_FIELD_TOP, true);
784 else
785 tpg_s_field(&dev->tpg, dev->field_cap, false);
786 tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
787 if (vivid_is_sdtv_cap(dev))
788 dev->tv_field_cap = mp->field;
789 tpg_update_mv_step(&dev->tpg);
790 dev->tpg.colorspace = mp->colorspace;
791 dev->tpg.xfer_func = mp->xfer_func;
792 if (dev->fmt_cap->color_enc == TGP_COLOR_ENC_YCBCR)
793 dev->tpg.ycbcr_enc = mp->ycbcr_enc;
794 else
795 dev->tpg.hsv_enc = mp->hsv_enc;
796 dev->tpg.quantization = mp->quantization;
797
798 return 0;
799 }
800
vidioc_g_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)801 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
802 struct v4l2_format *f)
803 {
804 struct vivid_dev *dev = video_drvdata(file);
805
806 if (!dev->multiplanar)
807 return -ENOTTY;
808 return vivid_g_fmt_vid_cap(file, priv, f);
809 }
810
vidioc_try_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)811 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
812 struct v4l2_format *f)
813 {
814 struct vivid_dev *dev = video_drvdata(file);
815
816 if (!dev->multiplanar)
817 return -ENOTTY;
818 return vivid_try_fmt_vid_cap(file, priv, f);
819 }
820
vidioc_s_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)821 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
822 struct v4l2_format *f)
823 {
824 struct vivid_dev *dev = video_drvdata(file);
825
826 if (!dev->multiplanar)
827 return -ENOTTY;
828 return vivid_s_fmt_vid_cap(file, priv, f);
829 }
830
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)831 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
832 struct v4l2_format *f)
833 {
834 struct vivid_dev *dev = video_drvdata(file);
835
836 if (dev->multiplanar)
837 return -ENOTTY;
838 return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
839 }
840
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)841 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
842 struct v4l2_format *f)
843 {
844 struct vivid_dev *dev = video_drvdata(file);
845
846 if (dev->multiplanar)
847 return -ENOTTY;
848 return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
849 }
850
vidioc_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)851 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
852 struct v4l2_format *f)
853 {
854 struct vivid_dev *dev = video_drvdata(file);
855
856 if (dev->multiplanar)
857 return -ENOTTY;
858 return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
859 }
860
vivid_vid_cap_g_selection(struct file * file,void * priv,struct v4l2_selection * sel)861 int vivid_vid_cap_g_selection(struct file *file, void *priv,
862 struct v4l2_selection *sel)
863 {
864 struct vivid_dev *dev = video_drvdata(file);
865
866 if (!dev->has_crop_cap && !dev->has_compose_cap)
867 return -ENOTTY;
868 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
869 return -EINVAL;
870 if (vivid_is_webcam(dev))
871 return -ENODATA;
872
873 sel->r.left = sel->r.top = 0;
874 switch (sel->target) {
875 case V4L2_SEL_TGT_CROP:
876 if (!dev->has_crop_cap)
877 return -EINVAL;
878 sel->r = dev->crop_cap;
879 break;
880 case V4L2_SEL_TGT_CROP_DEFAULT:
881 case V4L2_SEL_TGT_CROP_BOUNDS:
882 if (!dev->has_crop_cap)
883 return -EINVAL;
884 sel->r = dev->src_rect;
885 break;
886 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
887 if (!dev->has_compose_cap)
888 return -EINVAL;
889 sel->r = vivid_max_rect;
890 break;
891 case V4L2_SEL_TGT_COMPOSE:
892 if (!dev->has_compose_cap)
893 return -EINVAL;
894 sel->r = dev->compose_cap;
895 break;
896 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
897 if (!dev->has_compose_cap)
898 return -EINVAL;
899 sel->r = dev->fmt_cap_rect;
900 break;
901 default:
902 return -EINVAL;
903 }
904 return 0;
905 }
906
vivid_vid_cap_s_selection(struct file * file,void * fh,struct v4l2_selection * s)907 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
908 {
909 struct vivid_dev *dev = video_drvdata(file);
910 struct v4l2_rect *crop = &dev->crop_cap;
911 struct v4l2_rect *compose = &dev->compose_cap;
912 unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
913 int ret;
914
915 if (!dev->has_crop_cap && !dev->has_compose_cap)
916 return -ENOTTY;
917 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
918 return -EINVAL;
919 if (vivid_is_webcam(dev))
920 return -ENODATA;
921
922 switch (s->target) {
923 case V4L2_SEL_TGT_CROP:
924 if (!dev->has_crop_cap)
925 return -EINVAL;
926 ret = vivid_vid_adjust_sel(s->flags, &s->r);
927 if (ret)
928 return ret;
929 v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
930 v4l2_rect_set_max_size(&s->r, &dev->src_rect);
931 v4l2_rect_map_inside(&s->r, &dev->crop_bounds_cap);
932 s->r.top /= factor;
933 s->r.height /= factor;
934 if (dev->has_scaler_cap) {
935 struct v4l2_rect fmt = dev->fmt_cap_rect;
936 struct v4l2_rect max_rect = {
937 0, 0,
938 s->r.width * MAX_ZOOM,
939 s->r.height * MAX_ZOOM
940 };
941 struct v4l2_rect min_rect = {
942 0, 0,
943 s->r.width / MAX_ZOOM,
944 s->r.height / MAX_ZOOM
945 };
946
947 v4l2_rect_set_min_size(&fmt, &min_rect);
948 if (!dev->has_compose_cap)
949 v4l2_rect_set_max_size(&fmt, &max_rect);
950 if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
951 vb2_is_busy(&dev->vb_vid_cap_q))
952 return -EBUSY;
953 if (dev->has_compose_cap) {
954 v4l2_rect_set_min_size(compose, &min_rect);
955 v4l2_rect_set_max_size(compose, &max_rect);
956 v4l2_rect_map_inside(compose, &fmt);
957 }
958 dev->fmt_cap_rect = fmt;
959 tpg_s_buf_height(&dev->tpg, fmt.height);
960 } else if (dev->has_compose_cap) {
961 struct v4l2_rect fmt = dev->fmt_cap_rect;
962
963 v4l2_rect_set_min_size(&fmt, &s->r);
964 if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
965 vb2_is_busy(&dev->vb_vid_cap_q))
966 return -EBUSY;
967 dev->fmt_cap_rect = fmt;
968 tpg_s_buf_height(&dev->tpg, fmt.height);
969 v4l2_rect_set_size_to(compose, &s->r);
970 v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
971 } else {
972 if (!v4l2_rect_same_size(&s->r, &dev->fmt_cap_rect) &&
973 vb2_is_busy(&dev->vb_vid_cap_q))
974 return -EBUSY;
975 v4l2_rect_set_size_to(&dev->fmt_cap_rect, &s->r);
976 v4l2_rect_set_size_to(compose, &s->r);
977 v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
978 tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
979 }
980 s->r.top *= factor;
981 s->r.height *= factor;
982 *crop = s->r;
983 break;
984 case V4L2_SEL_TGT_COMPOSE:
985 if (!dev->has_compose_cap)
986 return -EINVAL;
987 ret = vivid_vid_adjust_sel(s->flags, &s->r);
988 if (ret)
989 return ret;
990 v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
991 v4l2_rect_set_max_size(&s->r, &dev->fmt_cap_rect);
992 if (dev->has_scaler_cap) {
993 struct v4l2_rect max_rect = {
994 0, 0,
995 dev->src_rect.width * MAX_ZOOM,
996 (dev->src_rect.height / factor) * MAX_ZOOM
997 };
998
999 v4l2_rect_set_max_size(&s->r, &max_rect);
1000 if (dev->has_crop_cap) {
1001 struct v4l2_rect min_rect = {
1002 0, 0,
1003 s->r.width / MAX_ZOOM,
1004 (s->r.height * factor) / MAX_ZOOM
1005 };
1006 struct v4l2_rect max_rect = {
1007 0, 0,
1008 s->r.width * MAX_ZOOM,
1009 (s->r.height * factor) * MAX_ZOOM
1010 };
1011
1012 v4l2_rect_set_min_size(crop, &min_rect);
1013 v4l2_rect_set_max_size(crop, &max_rect);
1014 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
1015 }
1016 } else if (dev->has_crop_cap) {
1017 s->r.top *= factor;
1018 s->r.height *= factor;
1019 v4l2_rect_set_max_size(&s->r, &dev->src_rect);
1020 v4l2_rect_set_size_to(crop, &s->r);
1021 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
1022 s->r.top /= factor;
1023 s->r.height /= factor;
1024 } else {
1025 v4l2_rect_set_size_to(&s->r, &dev->src_rect);
1026 s->r.height /= factor;
1027 }
1028 v4l2_rect_map_inside(&s->r, &dev->fmt_cap_rect);
1029 *compose = s->r;
1030 break;
1031 default:
1032 return -EINVAL;
1033 }
1034
1035 tpg_s_crop_compose(&dev->tpg, crop, compose);
1036 return 0;
1037 }
1038
vivid_vid_cap_g_pixelaspect(struct file * file,void * priv,int type,struct v4l2_fract * f)1039 int vivid_vid_cap_g_pixelaspect(struct file *file, void *priv,
1040 int type, struct v4l2_fract *f)
1041 {
1042 struct vivid_dev *dev = video_drvdata(file);
1043
1044 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1045 return -EINVAL;
1046
1047 switch (vivid_get_pixel_aspect(dev)) {
1048 case TPG_PIXEL_ASPECT_NTSC:
1049 f->numerator = 11;
1050 f->denominator = 10;
1051 break;
1052 case TPG_PIXEL_ASPECT_PAL:
1053 f->numerator = 54;
1054 f->denominator = 59;
1055 break;
1056 default:
1057 break;
1058 }
1059 return 0;
1060 }
1061
1062 static const struct v4l2_audio vivid_audio_inputs[] = {
1063 { 0, "TV", V4L2_AUDCAP_STEREO },
1064 { 1, "Line-In", V4L2_AUDCAP_STEREO },
1065 };
1066
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * inp)1067 int vidioc_enum_input(struct file *file, void *priv,
1068 struct v4l2_input *inp)
1069 {
1070 struct vivid_dev *dev = video_drvdata(file);
1071
1072 if (inp->index >= dev->num_inputs)
1073 return -EINVAL;
1074
1075 inp->type = V4L2_INPUT_TYPE_CAMERA;
1076 switch (dev->input_type[inp->index]) {
1077 case WEBCAM:
1078 snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1079 dev->input_name_counter[inp->index]);
1080 inp->capabilities = 0;
1081 break;
1082 case TV:
1083 snprintf(inp->name, sizeof(inp->name), "TV %u",
1084 dev->input_name_counter[inp->index]);
1085 inp->type = V4L2_INPUT_TYPE_TUNER;
1086 inp->std = V4L2_STD_ALL;
1087 if (dev->has_audio_inputs)
1088 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1089 inp->capabilities = V4L2_IN_CAP_STD;
1090 break;
1091 case SVID:
1092 snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1093 dev->input_name_counter[inp->index]);
1094 inp->std = V4L2_STD_ALL;
1095 if (dev->has_audio_inputs)
1096 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1097 inp->capabilities = V4L2_IN_CAP_STD;
1098 break;
1099 case HDMI:
1100 snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1101 dev->input_name_counter[inp->index]);
1102 inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1103 if (dev->edid_blocks == 0 ||
1104 dev->dv_timings_signal_mode[dev->input] == NO_SIGNAL)
1105 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1106 else if (dev->dv_timings_signal_mode[dev->input] == NO_LOCK ||
1107 dev->dv_timings_signal_mode[dev->input] == OUT_OF_RANGE)
1108 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1109 break;
1110 }
1111 if (dev->sensor_hflip)
1112 inp->status |= V4L2_IN_ST_HFLIP;
1113 if (dev->sensor_vflip)
1114 inp->status |= V4L2_IN_ST_VFLIP;
1115 if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1116 if (dev->std_signal_mode[dev->input] == NO_SIGNAL) {
1117 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1118 } else if (dev->std_signal_mode[dev->input] == NO_LOCK) {
1119 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1120 } else if (vivid_is_tv_cap(dev)) {
1121 switch (tpg_g_quality(&dev->tpg)) {
1122 case TPG_QUAL_GRAY:
1123 inp->status |= V4L2_IN_ST_COLOR_KILL;
1124 break;
1125 case TPG_QUAL_NOISE:
1126 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1127 break;
1128 default:
1129 break;
1130 }
1131 }
1132 }
1133 return 0;
1134 }
1135
vidioc_g_input(struct file * file,void * priv,unsigned * i)1136 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1137 {
1138 struct vivid_dev *dev = video_drvdata(file);
1139
1140 *i = dev->input;
1141 return 0;
1142 }
1143
vidioc_s_input(struct file * file,void * priv,unsigned i)1144 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1145 {
1146 struct vivid_dev *dev = video_drvdata(file);
1147 struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
1148 unsigned brightness;
1149
1150 if (i >= dev->num_inputs)
1151 return -EINVAL;
1152
1153 if (i == dev->input)
1154 return 0;
1155
1156 if (vb2_is_busy(&dev->vb_vid_cap_q) ||
1157 vb2_is_busy(&dev->vb_vbi_cap_q) ||
1158 vb2_is_busy(&dev->vb_meta_cap_q))
1159 return -EBUSY;
1160
1161 dev->input = i;
1162 dev->vid_cap_dev.tvnorms = 0;
1163 if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1164 dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1165 dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1166 }
1167 dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1168 dev->meta_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1169 vivid_update_format_cap(dev, false);
1170
1171 if (dev->colorspace) {
1172 switch (dev->input_type[i]) {
1173 case WEBCAM:
1174 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1175 break;
1176 case TV:
1177 case SVID:
1178 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1179 break;
1180 case HDMI:
1181 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1182 if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1183 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1184 else
1185 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1186 } else {
1187 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1188 }
1189 break;
1190 }
1191 }
1192
1193 /*
1194 * Modify the brightness range depending on the input.
1195 * This makes it easy to use vivid to test if applications can
1196 * handle control range modifications and is also how this is
1197 * typically used in practice as different inputs may be hooked
1198 * up to different receivers with different control ranges.
1199 */
1200 brightness = 128 * i + dev->input_brightness[i];
1201 v4l2_ctrl_modify_range(dev->brightness,
1202 128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1203 v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1204
1205 /* Restore per-input states. */
1206 v4l2_ctrl_activate(dev->ctrl_dv_timings_signal_mode,
1207 vivid_is_hdmi_cap(dev));
1208 v4l2_ctrl_activate(dev->ctrl_dv_timings, vivid_is_hdmi_cap(dev) &&
1209 dev->dv_timings_signal_mode[dev->input] ==
1210 SELECTED_DV_TIMINGS);
1211 v4l2_ctrl_activate(dev->ctrl_std_signal_mode, vivid_is_sdtv_cap(dev));
1212 v4l2_ctrl_activate(dev->ctrl_standard, vivid_is_sdtv_cap(dev) &&
1213 dev->std_signal_mode[dev->input]);
1214
1215 if (vivid_is_hdmi_cap(dev)) {
1216 v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings_signal_mode,
1217 dev->dv_timings_signal_mode[dev->input]);
1218 v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings,
1219 dev->query_dv_timings[dev->input]);
1220 } else if (vivid_is_sdtv_cap(dev)) {
1221 v4l2_ctrl_s_ctrl(dev->ctrl_std_signal_mode,
1222 dev->std_signal_mode[dev->input]);
1223 v4l2_ctrl_s_ctrl(dev->ctrl_standard,
1224 dev->std_signal_mode[dev->input]);
1225 }
1226
1227 return 0;
1228 }
1229
vidioc_enumaudio(struct file * file,void * fh,struct v4l2_audio * vin)1230 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1231 {
1232 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1233 return -EINVAL;
1234 *vin = vivid_audio_inputs[vin->index];
1235 return 0;
1236 }
1237
vidioc_g_audio(struct file * file,void * fh,struct v4l2_audio * vin)1238 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1239 {
1240 struct vivid_dev *dev = video_drvdata(file);
1241
1242 if (!vivid_is_sdtv_cap(dev))
1243 return -EINVAL;
1244 *vin = vivid_audio_inputs[dev->tv_audio_input];
1245 return 0;
1246 }
1247
vidioc_s_audio(struct file * file,void * fh,const struct v4l2_audio * vin)1248 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1249 {
1250 struct vivid_dev *dev = video_drvdata(file);
1251
1252 if (!vivid_is_sdtv_cap(dev))
1253 return -EINVAL;
1254 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1255 return -EINVAL;
1256 dev->tv_audio_input = vin->index;
1257 return 0;
1258 }
1259
vivid_video_g_frequency(struct file * file,void * fh,struct v4l2_frequency * vf)1260 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1261 {
1262 struct vivid_dev *dev = video_drvdata(file);
1263
1264 if (vf->tuner != 0)
1265 return -EINVAL;
1266 vf->frequency = dev->tv_freq;
1267 return 0;
1268 }
1269
vivid_video_s_frequency(struct file * file,void * fh,const struct v4l2_frequency * vf)1270 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1271 {
1272 struct vivid_dev *dev = video_drvdata(file);
1273
1274 if (vf->tuner != 0)
1275 return -EINVAL;
1276 dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1277 if (vivid_is_tv_cap(dev))
1278 vivid_update_quality(dev);
1279 return 0;
1280 }
1281
vivid_video_s_tuner(struct file * file,void * fh,const struct v4l2_tuner * vt)1282 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1283 {
1284 struct vivid_dev *dev = video_drvdata(file);
1285
1286 if (vt->index != 0)
1287 return -EINVAL;
1288 if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1289 return -EINVAL;
1290 dev->tv_audmode = vt->audmode;
1291 return 0;
1292 }
1293
vivid_video_g_tuner(struct file * file,void * fh,struct v4l2_tuner * vt)1294 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1295 {
1296 struct vivid_dev *dev = video_drvdata(file);
1297 enum tpg_quality qual;
1298
1299 if (vt->index != 0)
1300 return -EINVAL;
1301
1302 vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1303 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1304 vt->audmode = dev->tv_audmode;
1305 vt->rangelow = MIN_TV_FREQ;
1306 vt->rangehigh = MAX_TV_FREQ;
1307 qual = vivid_get_quality(dev, &vt->afc);
1308 if (qual == TPG_QUAL_COLOR)
1309 vt->signal = 0xffff;
1310 else if (qual == TPG_QUAL_GRAY)
1311 vt->signal = 0x8000;
1312 else
1313 vt->signal = 0;
1314 if (qual == TPG_QUAL_NOISE) {
1315 vt->rxsubchans = 0;
1316 } else if (qual == TPG_QUAL_GRAY) {
1317 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1318 } else {
1319 unsigned int channel_nr = dev->tv_freq / (6 * 16);
1320 unsigned int options =
1321 (dev->std_cap[dev->input] & V4L2_STD_NTSC_M) ? 4 : 3;
1322
1323 switch (channel_nr % options) {
1324 case 0:
1325 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1326 break;
1327 case 1:
1328 vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1329 break;
1330 case 2:
1331 if (dev->std_cap[dev->input] & V4L2_STD_NTSC_M)
1332 vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1333 else
1334 vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1335 break;
1336 case 3:
1337 vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1338 break;
1339 }
1340 }
1341 strscpy(vt->name, "TV Tuner", sizeof(vt->name));
1342 return 0;
1343 }
1344
1345 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1346 const v4l2_std_id vivid_standard[] = {
1347 V4L2_STD_NTSC_M,
1348 V4L2_STD_NTSC_M_JP,
1349 V4L2_STD_NTSC_M_KR,
1350 V4L2_STD_NTSC_443,
1351 V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1352 V4L2_STD_PAL_I,
1353 V4L2_STD_PAL_DK,
1354 V4L2_STD_PAL_M,
1355 V4L2_STD_PAL_N,
1356 V4L2_STD_PAL_Nc,
1357 V4L2_STD_PAL_60,
1358 V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1359 V4L2_STD_SECAM_DK,
1360 V4L2_STD_SECAM_L,
1361 V4L2_STD_SECAM_LC,
1362 V4L2_STD_UNKNOWN
1363 };
1364
1365 /* Must remain in sync with the vivid_standard array */
1366 const char * const vivid_ctrl_standard_strings[] = {
1367 "NTSC-M",
1368 "NTSC-M-JP",
1369 "NTSC-M-KR",
1370 "NTSC-443",
1371 "PAL-BGH",
1372 "PAL-I",
1373 "PAL-DK",
1374 "PAL-M",
1375 "PAL-N",
1376 "PAL-Nc",
1377 "PAL-60",
1378 "SECAM-BGH",
1379 "SECAM-DK",
1380 "SECAM-L",
1381 "SECAM-Lc",
1382 NULL,
1383 };
1384
vidioc_querystd(struct file * file,void * priv,v4l2_std_id * id)1385 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1386 {
1387 struct vivid_dev *dev = video_drvdata(file);
1388 unsigned int last = dev->query_std_last[dev->input];
1389
1390 if (!vivid_is_sdtv_cap(dev))
1391 return -ENODATA;
1392 if (dev->std_signal_mode[dev->input] == NO_SIGNAL ||
1393 dev->std_signal_mode[dev->input] == NO_LOCK) {
1394 *id = V4L2_STD_UNKNOWN;
1395 return 0;
1396 }
1397 if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1398 *id = V4L2_STD_UNKNOWN;
1399 } else if (dev->std_signal_mode[dev->input] == CURRENT_STD) {
1400 *id = dev->std_cap[dev->input];
1401 } else if (dev->std_signal_mode[dev->input] == SELECTED_STD) {
1402 *id = dev->query_std[dev->input];
1403 } else {
1404 *id = vivid_standard[last];
1405 dev->query_std_last[dev->input] =
1406 (last + 1) % ARRAY_SIZE(vivid_standard);
1407 }
1408
1409 return 0;
1410 }
1411
vivid_vid_cap_s_std(struct file * file,void * priv,v4l2_std_id id)1412 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1413 {
1414 struct vivid_dev *dev = video_drvdata(file);
1415
1416 if (!vivid_is_sdtv_cap(dev))
1417 return -ENODATA;
1418 if (dev->std_cap[dev->input] == id)
1419 return 0;
1420 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1421 return -EBUSY;
1422 dev->std_cap[dev->input] = id;
1423 vivid_update_format_cap(dev, false);
1424 return 0;
1425 }
1426
find_aspect_ratio(u32 width,u32 height,u32 * num,u32 * denom)1427 static void find_aspect_ratio(u32 width, u32 height,
1428 u32 *num, u32 *denom)
1429 {
1430 if (!(height % 3) && ((height * 4 / 3) == width)) {
1431 *num = 4;
1432 *denom = 3;
1433 } else if (!(height % 9) && ((height * 16 / 9) == width)) {
1434 *num = 16;
1435 *denom = 9;
1436 } else if (!(height % 10) && ((height * 16 / 10) == width)) {
1437 *num = 16;
1438 *denom = 10;
1439 } else if (!(height % 4) && ((height * 5 / 4) == width)) {
1440 *num = 5;
1441 *denom = 4;
1442 } else if (!(height % 9) && ((height * 15 / 9) == width)) {
1443 *num = 15;
1444 *denom = 9;
1445 } else { /* default to 16:9 */
1446 *num = 16;
1447 *denom = 9;
1448 }
1449 }
1450
valid_cvt_gtf_timings(struct v4l2_dv_timings * timings)1451 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1452 {
1453 struct v4l2_bt_timings *bt = &timings->bt;
1454 u32 total_h_pixel;
1455 u32 total_v_lines;
1456 u32 h_freq;
1457
1458 if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1459 NULL, NULL))
1460 return false;
1461
1462 total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1463 total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1464
1465 h_freq = (u32)bt->pixelclock / total_h_pixel;
1466
1467 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1468 if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1469 bt->polarities, bt->interlaced, timings))
1470 return true;
1471 }
1472
1473 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1474 struct v4l2_fract aspect_ratio;
1475
1476 find_aspect_ratio(bt->width, bt->height,
1477 &aspect_ratio.numerator,
1478 &aspect_ratio.denominator);
1479 if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1480 bt->polarities, bt->interlaced,
1481 aspect_ratio, timings))
1482 return true;
1483 }
1484 return false;
1485 }
1486
vivid_vid_cap_s_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1487 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1488 struct v4l2_dv_timings *timings)
1489 {
1490 struct vivid_dev *dev = video_drvdata(file);
1491
1492 if (!vivid_is_hdmi_cap(dev))
1493 return -ENODATA;
1494 if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1495 0, NULL, NULL) &&
1496 !valid_cvt_gtf_timings(timings))
1497 return -EINVAL;
1498
1499 if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap[dev->input],
1500 0, false))
1501 return 0;
1502 if (vb2_is_busy(&dev->vb_vid_cap_q))
1503 return -EBUSY;
1504
1505 dev->dv_timings_cap[dev->input] = *timings;
1506 vivid_update_format_cap(dev, false);
1507 return 0;
1508 }
1509
vidioc_query_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1510 int vidioc_query_dv_timings(struct file *file, void *_fh,
1511 struct v4l2_dv_timings *timings)
1512 {
1513 struct vivid_dev *dev = video_drvdata(file);
1514 unsigned int input = dev->input;
1515 unsigned int last = dev->query_dv_timings_last[input];
1516
1517 if (!vivid_is_hdmi_cap(dev))
1518 return -ENODATA;
1519 if (dev->dv_timings_signal_mode[input] == NO_SIGNAL ||
1520 dev->edid_blocks == 0)
1521 return -ENOLINK;
1522 if (dev->dv_timings_signal_mode[input] == NO_LOCK)
1523 return -ENOLCK;
1524 if (dev->dv_timings_signal_mode[input] == OUT_OF_RANGE) {
1525 timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1526 return -ERANGE;
1527 }
1528 if (dev->dv_timings_signal_mode[input] == CURRENT_DV_TIMINGS) {
1529 *timings = dev->dv_timings_cap[input];
1530 } else if (dev->dv_timings_signal_mode[input] ==
1531 SELECTED_DV_TIMINGS) {
1532 *timings =
1533 v4l2_dv_timings_presets[dev->query_dv_timings[input]];
1534 } else {
1535 *timings =
1536 v4l2_dv_timings_presets[last];
1537 dev->query_dv_timings_last[input] =
1538 (last + 1) % dev->query_dv_timings_size;
1539 }
1540 return 0;
1541 }
1542
vidioc_s_edid(struct file * file,void * _fh,struct v4l2_edid * edid)1543 int vidioc_s_edid(struct file *file, void *_fh,
1544 struct v4l2_edid *edid)
1545 {
1546 struct vivid_dev *dev = video_drvdata(file);
1547 u16 phys_addr;
1548 u32 display_present = 0;
1549 unsigned int i, j;
1550 int ret;
1551
1552 memset(edid->reserved, 0, sizeof(edid->reserved));
1553 if (edid->pad >= dev->num_inputs)
1554 return -EINVAL;
1555 if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1556 return -EINVAL;
1557 if (edid->blocks == 0) {
1558 dev->edid_blocks = 0;
1559 v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, 0);
1560 v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, 0);
1561 phys_addr = CEC_PHYS_ADDR_INVALID;
1562 goto set_phys_addr;
1563 }
1564 if (edid->blocks > dev->edid_max_blocks) {
1565 edid->blocks = dev->edid_max_blocks;
1566 return -E2BIG;
1567 }
1568 phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1569 ret = v4l2_phys_addr_validate(phys_addr, &phys_addr, NULL);
1570 if (ret)
1571 return ret;
1572
1573 if (vb2_is_busy(&dev->vb_vid_cap_q))
1574 return -EBUSY;
1575
1576 dev->edid_blocks = edid->blocks;
1577 memcpy(dev->edid, edid->edid, edid->blocks * 128);
1578
1579 for (i = 0, j = 0; i < dev->num_outputs; i++)
1580 if (dev->output_type[i] == HDMI)
1581 display_present |=
1582 dev->display_present[i] << j++;
1583
1584 v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, display_present);
1585 v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, display_present);
1586
1587 set_phys_addr:
1588 /* TODO: a proper hotplug detect cycle should be emulated here */
1589 cec_s_phys_addr(dev->cec_rx_adap, phys_addr, false);
1590
1591 for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++)
1592 cec_s_phys_addr(dev->cec_tx_adap[i],
1593 dev->display_present[i] ?
1594 v4l2_phys_addr_for_input(phys_addr, i + 1) :
1595 CEC_PHYS_ADDR_INVALID,
1596 false);
1597 return 0;
1598 }
1599
vidioc_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)1600 int vidioc_enum_framesizes(struct file *file, void *fh,
1601 struct v4l2_frmsizeenum *fsize)
1602 {
1603 struct vivid_dev *dev = video_drvdata(file);
1604
1605 if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1606 return -EINVAL;
1607 if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1608 return -EINVAL;
1609 if (vivid_is_webcam(dev)) {
1610 if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1611 return -EINVAL;
1612 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1613 fsize->discrete = webcam_sizes[fsize->index];
1614 return 0;
1615 }
1616 if (fsize->index)
1617 return -EINVAL;
1618 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1619 fsize->stepwise.min_width = MIN_WIDTH;
1620 fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1621 fsize->stepwise.step_width = 2;
1622 fsize->stepwise.min_height = MIN_HEIGHT;
1623 fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1624 fsize->stepwise.step_height = 2;
1625 return 0;
1626 }
1627
1628 /* timeperframe is arbitrary and continuous */
vidioc_enum_frameintervals(struct file * file,void * priv,struct v4l2_frmivalenum * fival)1629 int vidioc_enum_frameintervals(struct file *file, void *priv,
1630 struct v4l2_frmivalenum *fival)
1631 {
1632 struct vivid_dev *dev = video_drvdata(file);
1633 const struct vivid_fmt *fmt;
1634 int i;
1635
1636 fmt = vivid_get_format(dev, fival->pixel_format);
1637 if (!fmt)
1638 return -EINVAL;
1639
1640 if (!vivid_is_webcam(dev)) {
1641 if (fival->index)
1642 return -EINVAL;
1643 if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1644 return -EINVAL;
1645 if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1646 return -EINVAL;
1647 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1648 fival->discrete = dev->timeperframe_vid_cap;
1649 return 0;
1650 }
1651
1652 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1653 if (fival->width == webcam_sizes[i].width &&
1654 fival->height == webcam_sizes[i].height)
1655 break;
1656 if (i == ARRAY_SIZE(webcam_sizes))
1657 return -EINVAL;
1658 if (fival->index >= webcam_ival_count(dev, i))
1659 return -EINVAL;
1660 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1661 fival->discrete = webcam_intervals[fival->index];
1662 return 0;
1663 }
1664
vivid_vid_cap_g_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1665 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1666 struct v4l2_streamparm *parm)
1667 {
1668 struct vivid_dev *dev = video_drvdata(file);
1669
1670 if (parm->type != (dev->multiplanar ?
1671 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1672 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1673 return -EINVAL;
1674
1675 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1676 parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1677 parm->parm.capture.readbuffers = 1;
1678 return 0;
1679 }
1680
vivid_vid_cap_s_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1681 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1682 struct v4l2_streamparm *parm)
1683 {
1684 struct vivid_dev *dev = video_drvdata(file);
1685 unsigned int ival_sz = webcam_ival_count(dev, dev->webcam_size_idx);
1686 struct v4l2_fract tpf;
1687 unsigned i;
1688
1689 if (parm->type != (dev->multiplanar ?
1690 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1691 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1692 return -EINVAL;
1693 if (!vivid_is_webcam(dev))
1694 return vivid_vid_cap_g_parm(file, priv, parm);
1695
1696 tpf = parm->parm.capture.timeperframe;
1697
1698 if (tpf.denominator == 0)
1699 tpf = webcam_intervals[ival_sz - 1];
1700 for (i = 0; i < ival_sz; i++)
1701 if (V4L2_FRACT_COMPARE(tpf, >=, webcam_intervals[i]))
1702 break;
1703 if (i == ival_sz)
1704 i = ival_sz - 1;
1705 dev->webcam_ival_idx = i;
1706 tpf = webcam_intervals[dev->webcam_ival_idx];
1707
1708 /* resync the thread's timings */
1709 dev->cap_seq_resync = true;
1710 dev->timeperframe_vid_cap = tpf;
1711 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1712 parm->parm.capture.timeperframe = tpf;
1713 parm->parm.capture.readbuffers = 1;
1714 return 0;
1715 }
1716