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->vdownsampling[p] +
111 dev->fmt_cap->data_offset[p])
112 return -EINVAL;
113 }
114 } else {
115 for (p = 0; p < buffers; p++)
116 sizes[p] = (tpg_g_line_width(&dev->tpg, p) * h) /
117 dev->fmt_cap->vdownsampling[p] +
118 dev->fmt_cap->data_offset[p];
119 }
120
121 if (vq->num_buffers + *nbuffers < 2)
122 *nbuffers = 2 - vq->num_buffers;
123
124 *nplanes = buffers;
125
126 dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
127 for (p = 0; p < buffers; p++)
128 dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
129
130 return 0;
131 }
132
vid_cap_buf_prepare(struct vb2_buffer * vb)133 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
134 {
135 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
136 unsigned long size;
137 unsigned buffers = tpg_g_buffers(&dev->tpg);
138 unsigned p;
139
140 dprintk(dev, 1, "%s\n", __func__);
141
142 if (WARN_ON(NULL == dev->fmt_cap))
143 return -EINVAL;
144
145 if (dev->buf_prepare_error) {
146 /*
147 * Error injection: test what happens if buf_prepare() returns
148 * an error.
149 */
150 dev->buf_prepare_error = false;
151 return -EINVAL;
152 }
153 for (p = 0; p < buffers; p++) {
154 size = (tpg_g_line_width(&dev->tpg, p) *
155 dev->fmt_cap_rect.height) /
156 dev->fmt_cap->vdownsampling[p] +
157 dev->fmt_cap->data_offset[p];
158
159 if (vb2_plane_size(vb, p) < size) {
160 dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
161 __func__, p, vb2_plane_size(vb, p), size);
162 return -EINVAL;
163 }
164
165 vb2_set_plane_payload(vb, p, size);
166 vb->planes[p].data_offset = dev->fmt_cap->data_offset[p];
167 }
168
169 return 0;
170 }
171
vid_cap_buf_finish(struct vb2_buffer * vb)172 static void vid_cap_buf_finish(struct vb2_buffer *vb)
173 {
174 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
175 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
176 struct v4l2_timecode *tc = &vbuf->timecode;
177 unsigned fps = 25;
178 unsigned seq = vbuf->sequence;
179
180 if (!vivid_is_sdtv_cap(dev))
181 return;
182
183 /*
184 * Set the timecode. Rarely used, so it is interesting to
185 * test this.
186 */
187 vbuf->flags |= V4L2_BUF_FLAG_TIMECODE;
188 if (dev->std_cap[dev->input] & V4L2_STD_525_60)
189 fps = 30;
190 tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
191 tc->flags = 0;
192 tc->frames = seq % fps;
193 tc->seconds = (seq / fps) % 60;
194 tc->minutes = (seq / (60 * fps)) % 60;
195 tc->hours = (seq / (60 * 60 * fps)) % 24;
196 }
197
vid_cap_buf_queue(struct vb2_buffer * vb)198 static void vid_cap_buf_queue(struct vb2_buffer *vb)
199 {
200 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
201 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
202 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
203
204 dprintk(dev, 1, "%s\n", __func__);
205
206 spin_lock(&dev->slock);
207 list_add_tail(&buf->list, &dev->vid_cap_active);
208 spin_unlock(&dev->slock);
209 }
210
vid_cap_start_streaming(struct vb2_queue * vq,unsigned count)211 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
212 {
213 struct vivid_dev *dev = vb2_get_drv_priv(vq);
214 unsigned i;
215 int err;
216
217 if (vb2_is_streaming(&dev->vb_vid_out_q))
218 dev->can_loop_video = vivid_vid_can_loop(dev);
219
220 dev->vid_cap_seq_count = 0;
221 dprintk(dev, 1, "%s\n", __func__);
222 for (i = 0; i < VIDEO_MAX_FRAME; i++)
223 dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
224 if (dev->start_streaming_error) {
225 dev->start_streaming_error = false;
226 err = -EINVAL;
227 } else {
228 err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
229 }
230 if (err) {
231 struct vivid_buffer *buf, *tmp;
232
233 list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
234 list_del(&buf->list);
235 vb2_buffer_done(&buf->vb.vb2_buf,
236 VB2_BUF_STATE_QUEUED);
237 }
238 }
239 return err;
240 }
241
242 /* abort streaming and wait for last buffer */
vid_cap_stop_streaming(struct vb2_queue * vq)243 static void vid_cap_stop_streaming(struct vb2_queue *vq)
244 {
245 struct vivid_dev *dev = vb2_get_drv_priv(vq);
246
247 dprintk(dev, 1, "%s\n", __func__);
248 vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
249 dev->can_loop_video = false;
250 }
251
vid_cap_buf_request_complete(struct vb2_buffer * vb)252 static void vid_cap_buf_request_complete(struct vb2_buffer *vb)
253 {
254 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
255
256 v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vid_cap);
257 }
258
259 const struct vb2_ops vivid_vid_cap_qops = {
260 .queue_setup = vid_cap_queue_setup,
261 .buf_prepare = vid_cap_buf_prepare,
262 .buf_finish = vid_cap_buf_finish,
263 .buf_queue = vid_cap_buf_queue,
264 .start_streaming = vid_cap_start_streaming,
265 .stop_streaming = vid_cap_stop_streaming,
266 .buf_request_complete = vid_cap_buf_request_complete,
267 .wait_prepare = vb2_ops_wait_prepare,
268 .wait_finish = vb2_ops_wait_finish,
269 };
270
271 /*
272 * Determine the 'picture' quality based on the current TV frequency: either
273 * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
274 * signal or NOISE for no signal.
275 */
vivid_update_quality(struct vivid_dev * dev)276 void vivid_update_quality(struct vivid_dev *dev)
277 {
278 unsigned freq_modulus;
279
280 if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
281 /*
282 * The 'noise' will only be replaced by the actual video
283 * if the output video matches the input video settings.
284 */
285 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
286 return;
287 }
288 if (vivid_is_hdmi_cap(dev) &&
289 VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode[dev->input])) {
290 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
291 return;
292 }
293 if (vivid_is_sdtv_cap(dev) &&
294 VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) {
295 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
296 return;
297 }
298 if (!vivid_is_tv_cap(dev)) {
299 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
300 return;
301 }
302
303 /*
304 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
305 * From +/- 0.25 MHz around the channel there is color, and from
306 * +/- 1 MHz there is grayscale (chroma is lost).
307 * Everywhere else it is just noise.
308 */
309 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
310 if (freq_modulus > 2 * 16) {
311 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
312 next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
313 return;
314 }
315 if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
316 tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
317 else
318 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
319 }
320
321 /*
322 * Get the current picture quality and the associated afc value.
323 */
vivid_get_quality(struct vivid_dev * dev,s32 * afc)324 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
325 {
326 unsigned freq_modulus;
327
328 if (afc)
329 *afc = 0;
330 if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
331 tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
332 return tpg_g_quality(&dev->tpg);
333
334 /*
335 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
336 * From +/- 0.25 MHz around the channel there is color, and from
337 * +/- 1 MHz there is grayscale (chroma is lost).
338 * Everywhere else it is just gray.
339 */
340 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
341 if (afc)
342 *afc = freq_modulus - 1 * 16;
343 return TPG_QUAL_GRAY;
344 }
345
vivid_get_video_aspect(const struct vivid_dev * dev)346 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
347 {
348 if (vivid_is_sdtv_cap(dev))
349 return dev->std_aspect_ratio[dev->input];
350
351 if (vivid_is_hdmi_cap(dev))
352 return dev->dv_timings_aspect_ratio[dev->input];
353
354 return TPG_VIDEO_ASPECT_IMAGE;
355 }
356
vivid_get_pixel_aspect(const struct vivid_dev * dev)357 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
358 {
359 if (vivid_is_sdtv_cap(dev))
360 return (dev->std_cap[dev->input] & V4L2_STD_525_60) ?
361 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
362
363 if (vivid_is_hdmi_cap(dev) &&
364 dev->src_rect.width == 720 && dev->src_rect.height <= 576)
365 return dev->src_rect.height == 480 ?
366 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
367
368 return TPG_PIXEL_ASPECT_SQUARE;
369 }
370
371 /*
372 * Called whenever the format has to be reset which can occur when
373 * changing inputs, standard, timings, etc.
374 */
vivid_update_format_cap(struct vivid_dev * dev,bool keep_controls)375 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
376 {
377 struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
378 u32 dims[V4L2_CTRL_MAX_DIMS] = {};
379 unsigned size;
380 u64 pixelclock;
381
382 switch (dev->input_type[dev->input]) {
383 case WEBCAM:
384 default:
385 dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
386 dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
387 dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
388 dev->field_cap = V4L2_FIELD_NONE;
389 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
390 break;
391 case TV:
392 case SVID:
393 dev->field_cap = dev->tv_field_cap;
394 dev->src_rect.width = 720;
395 if (dev->std_cap[dev->input] & V4L2_STD_525_60) {
396 dev->src_rect.height = 480;
397 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
398 dev->service_set_cap = V4L2_SLICED_CAPTION_525;
399 } else {
400 dev->src_rect.height = 576;
401 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
402 dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
403 }
404 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
405 break;
406 case HDMI:
407 dev->src_rect.width = bt->width;
408 dev->src_rect.height = bt->height;
409 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
410 if (dev->reduced_fps && can_reduce_fps(bt)) {
411 pixelclock = div_u64(bt->pixelclock * 1000, 1001);
412 bt->flags |= V4L2_DV_FL_REDUCED_FPS;
413 } else {
414 pixelclock = bt->pixelclock;
415 bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
416 }
417 dev->timeperframe_vid_cap = (struct v4l2_fract) {
418 size / 100, (u32)pixelclock / 100
419 };
420 if (bt->interlaced)
421 dev->field_cap = V4L2_FIELD_ALTERNATE;
422 else
423 dev->field_cap = V4L2_FIELD_NONE;
424
425 /*
426 * We can be called from within s_ctrl, in that case we can't
427 * set/get controls. Luckily we don't need to in that case.
428 */
429 if (keep_controls || !dev->colorspace)
430 break;
431 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
432 if (bt->width == 720 && bt->height <= 576)
433 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
434 else
435 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
436 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
437 } else {
438 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
439 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
440 }
441 tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
442 break;
443 }
444 vivid_update_quality(dev);
445 tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
446 dev->crop_cap = dev->src_rect;
447 dev->crop_bounds_cap = dev->src_rect;
448 dev->compose_cap = dev->crop_cap;
449 if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
450 dev->compose_cap.height /= 2;
451 dev->fmt_cap_rect = dev->compose_cap;
452 tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
453 tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
454 tpg_update_mv_step(&dev->tpg);
455
456 /*
457 * We can be called from within s_ctrl, in that case we can't
458 * modify controls. Luckily we don't need to in that case.
459 */
460 if (keep_controls)
461 return;
462
463 dims[0] = roundup(dev->src_rect.width, PIXEL_ARRAY_DIV);
464 dims[1] = roundup(dev->src_rect.height, PIXEL_ARRAY_DIV);
465 v4l2_ctrl_modify_dimensions(dev->pixel_array, dims);
466 }
467
468 /* Map the field to something that is valid for the current input */
vivid_field_cap(struct vivid_dev * dev,enum v4l2_field field)469 static enum v4l2_field vivid_field_cap(struct vivid_dev *dev, enum v4l2_field field)
470 {
471 if (vivid_is_sdtv_cap(dev)) {
472 switch (field) {
473 case V4L2_FIELD_INTERLACED_TB:
474 case V4L2_FIELD_INTERLACED_BT:
475 case V4L2_FIELD_SEQ_TB:
476 case V4L2_FIELD_SEQ_BT:
477 case V4L2_FIELD_TOP:
478 case V4L2_FIELD_BOTTOM:
479 case V4L2_FIELD_ALTERNATE:
480 return field;
481 case V4L2_FIELD_INTERLACED:
482 default:
483 return V4L2_FIELD_INTERLACED;
484 }
485 }
486 if (vivid_is_hdmi_cap(dev))
487 return dev->dv_timings_cap[dev->input].bt.interlaced ?
488 V4L2_FIELD_ALTERNATE : V4L2_FIELD_NONE;
489 return V4L2_FIELD_NONE;
490 }
491
vivid_colorspace_cap(struct vivid_dev * dev)492 static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
493 {
494 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
495 return tpg_g_colorspace(&dev->tpg);
496 return dev->colorspace_out;
497 }
498
vivid_xfer_func_cap(struct vivid_dev * dev)499 static unsigned vivid_xfer_func_cap(struct vivid_dev *dev)
500 {
501 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
502 return tpg_g_xfer_func(&dev->tpg);
503 return dev->xfer_func_out;
504 }
505
vivid_ycbcr_enc_cap(struct vivid_dev * dev)506 static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
507 {
508 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
509 return tpg_g_ycbcr_enc(&dev->tpg);
510 return dev->ycbcr_enc_out;
511 }
512
vivid_hsv_enc_cap(struct vivid_dev * dev)513 static unsigned int vivid_hsv_enc_cap(struct vivid_dev *dev)
514 {
515 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
516 return tpg_g_hsv_enc(&dev->tpg);
517 return dev->hsv_enc_out;
518 }
519
vivid_quantization_cap(struct vivid_dev * dev)520 static unsigned vivid_quantization_cap(struct vivid_dev *dev)
521 {
522 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
523 return tpg_g_quantization(&dev->tpg);
524 return dev->quantization_out;
525 }
526
vivid_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)527 int vivid_g_fmt_vid_cap(struct file *file, void *priv,
528 struct v4l2_format *f)
529 {
530 struct vivid_dev *dev = video_drvdata(file);
531 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
532 unsigned p;
533
534 mp->width = dev->fmt_cap_rect.width;
535 mp->height = dev->fmt_cap_rect.height;
536 mp->field = dev->field_cap;
537 mp->pixelformat = dev->fmt_cap->fourcc;
538 mp->colorspace = vivid_colorspace_cap(dev);
539 mp->xfer_func = vivid_xfer_func_cap(dev);
540 if (dev->fmt_cap->color_enc == TGP_COLOR_ENC_HSV)
541 mp->hsv_enc = vivid_hsv_enc_cap(dev);
542 else
543 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
544 mp->quantization = vivid_quantization_cap(dev);
545 mp->num_planes = dev->fmt_cap->buffers;
546 for (p = 0; p < mp->num_planes; p++) {
547 mp->plane_fmt[p].bytesperline = tpg_g_bytesperline(&dev->tpg, p);
548 mp->plane_fmt[p].sizeimage =
549 (tpg_g_line_width(&dev->tpg, p) * mp->height) /
550 dev->fmt_cap->vdownsampling[p] +
551 dev->fmt_cap->data_offset[p];
552 }
553 return 0;
554 }
555
vivid_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)556 int vivid_try_fmt_vid_cap(struct file *file, void *priv,
557 struct v4l2_format *f)
558 {
559 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
560 struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
561 struct vivid_dev *dev = video_drvdata(file);
562 const struct vivid_fmt *fmt;
563 unsigned bytesperline, max_bpl;
564 unsigned factor = 1;
565 unsigned w, h;
566 unsigned p;
567 bool user_set_csc = !!(mp->flags & V4L2_PIX_FMT_FLAG_SET_CSC);
568
569 fmt = vivid_get_format(dev, mp->pixelformat);
570 if (!fmt) {
571 dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
572 mp->pixelformat);
573 mp->pixelformat = V4L2_PIX_FMT_YUYV;
574 fmt = vivid_get_format(dev, mp->pixelformat);
575 }
576
577 mp->field = vivid_field_cap(dev, mp->field);
578 if (vivid_is_webcam(dev)) {
579 const struct v4l2_frmsize_discrete *sz =
580 v4l2_find_nearest_size(webcam_sizes,
581 ARRAY_SIZE(webcam_sizes), width,
582 height, mp->width, mp->height);
583
584 w = sz->width;
585 h = sz->height;
586 } else if (vivid_is_sdtv_cap(dev)) {
587 w = 720;
588 h = (dev->std_cap[dev->input] & V4L2_STD_525_60) ? 480 : 576;
589 } else {
590 w = dev->src_rect.width;
591 h = dev->src_rect.height;
592 }
593 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
594 factor = 2;
595 if (vivid_is_webcam(dev) ||
596 (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
597 mp->width = w;
598 mp->height = h / factor;
599 } else {
600 struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
601
602 v4l2_rect_set_min_size(&r, &vivid_min_rect);
603 v4l2_rect_set_max_size(&r, &vivid_max_rect);
604 if (dev->has_scaler_cap && !dev->has_compose_cap) {
605 struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
606
607 v4l2_rect_set_max_size(&r, &max_r);
608 } else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
609 v4l2_rect_set_max_size(&r, &dev->src_rect);
610 } else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
611 v4l2_rect_set_min_size(&r, &dev->src_rect);
612 }
613 mp->width = r.width;
614 mp->height = r.height / factor;
615 }
616
617 /* This driver supports custom bytesperline values */
618
619 mp->num_planes = fmt->buffers;
620 for (p = 0; p < fmt->buffers; p++) {
621 /* Calculate the minimum supported bytesperline value */
622 bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
623 /* Calculate the maximum supported bytesperline value */
624 max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
625
626 if (pfmt[p].bytesperline > max_bpl)
627 pfmt[p].bytesperline = max_bpl;
628 if (pfmt[p].bytesperline < bytesperline)
629 pfmt[p].bytesperline = bytesperline;
630
631 pfmt[p].sizeimage = (pfmt[p].bytesperline * mp->height) /
632 fmt->vdownsampling[p] + fmt->data_offset[p];
633
634 memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
635 }
636 for (p = fmt->buffers; p < fmt->planes; p++)
637 pfmt[0].sizeimage += (pfmt[0].bytesperline * mp->height *
638 (fmt->bit_depth[p] / fmt->vdownsampling[p])) /
639 (fmt->bit_depth[0] / fmt->vdownsampling[0]);
640
641 if (!user_set_csc || !v4l2_is_colorspace_valid(mp->colorspace))
642 mp->colorspace = vivid_colorspace_cap(dev);
643
644 if (!user_set_csc || !v4l2_is_xfer_func_valid(mp->xfer_func))
645 mp->xfer_func = vivid_xfer_func_cap(dev);
646
647 if (fmt->color_enc == TGP_COLOR_ENC_HSV) {
648 if (!user_set_csc || !v4l2_is_hsv_enc_valid(mp->hsv_enc))
649 mp->hsv_enc = vivid_hsv_enc_cap(dev);
650 } else if (fmt->color_enc == TGP_COLOR_ENC_YCBCR) {
651 if (!user_set_csc || !v4l2_is_ycbcr_enc_valid(mp->ycbcr_enc))
652 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
653 } else {
654 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
655 }
656
657 if (fmt->color_enc == TGP_COLOR_ENC_YCBCR ||
658 fmt->color_enc == TGP_COLOR_ENC_RGB) {
659 if (!user_set_csc || !v4l2_is_quant_valid(mp->quantization))
660 mp->quantization = vivid_quantization_cap(dev);
661 } else {
662 mp->quantization = vivid_quantization_cap(dev);
663 }
664
665 memset(mp->reserved, 0, sizeof(mp->reserved));
666 return 0;
667 }
668
vivid_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)669 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
670 struct v4l2_format *f)
671 {
672 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
673 struct vivid_dev *dev = video_drvdata(file);
674 struct v4l2_rect *crop = &dev->crop_cap;
675 struct v4l2_rect *compose = &dev->compose_cap;
676 struct vb2_queue *q = &dev->vb_vid_cap_q;
677 int ret = vivid_try_fmt_vid_cap(file, priv, f);
678 unsigned factor = 1;
679 unsigned p;
680 unsigned i;
681
682 if (ret < 0)
683 return ret;
684
685 if (vb2_is_busy(q)) {
686 dprintk(dev, 1, "%s device busy\n", __func__);
687 return -EBUSY;
688 }
689
690 dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
691 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
692 factor = 2;
693
694 /* Note: the webcam input doesn't support scaling, cropping or composing */
695
696 if (!vivid_is_webcam(dev) &&
697 (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
698 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
699
700 if (dev->has_scaler_cap) {
701 if (dev->has_compose_cap)
702 v4l2_rect_map_inside(compose, &r);
703 else
704 *compose = r;
705 if (dev->has_crop_cap && !dev->has_compose_cap) {
706 struct v4l2_rect min_r = {
707 0, 0,
708 r.width / MAX_ZOOM,
709 factor * r.height / MAX_ZOOM
710 };
711 struct v4l2_rect max_r = {
712 0, 0,
713 r.width * MAX_ZOOM,
714 factor * r.height * MAX_ZOOM
715 };
716
717 v4l2_rect_set_min_size(crop, &min_r);
718 v4l2_rect_set_max_size(crop, &max_r);
719 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
720 } else if (dev->has_crop_cap) {
721 struct v4l2_rect min_r = {
722 0, 0,
723 compose->width / MAX_ZOOM,
724 factor * compose->height / MAX_ZOOM
725 };
726 struct v4l2_rect max_r = {
727 0, 0,
728 compose->width * MAX_ZOOM,
729 factor * compose->height * MAX_ZOOM
730 };
731
732 v4l2_rect_set_min_size(crop, &min_r);
733 v4l2_rect_set_max_size(crop, &max_r);
734 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
735 }
736 } else if (dev->has_crop_cap && !dev->has_compose_cap) {
737 r.height *= factor;
738 v4l2_rect_set_size_to(crop, &r);
739 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
740 r = *crop;
741 r.height /= factor;
742 v4l2_rect_set_size_to(compose, &r);
743 } else if (!dev->has_crop_cap) {
744 v4l2_rect_map_inside(compose, &r);
745 } else {
746 r.height *= factor;
747 v4l2_rect_set_max_size(crop, &r);
748 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
749 compose->top *= factor;
750 compose->height *= factor;
751 v4l2_rect_set_size_to(compose, crop);
752 v4l2_rect_map_inside(compose, &r);
753 compose->top /= factor;
754 compose->height /= factor;
755 }
756 } else if (vivid_is_webcam(dev)) {
757 unsigned int ival_sz = webcam_ival_count(dev, dev->webcam_size_idx);
758
759 /* Guaranteed to be a match */
760 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
761 if (webcam_sizes[i].width == mp->width &&
762 webcam_sizes[i].height == mp->height)
763 break;
764 dev->webcam_size_idx = i;
765 if (dev->webcam_ival_idx >= ival_sz)
766 dev->webcam_ival_idx = ival_sz - 1;
767 vivid_update_format_cap(dev, false);
768 } else {
769 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
770
771 v4l2_rect_set_size_to(compose, &r);
772 r.height *= factor;
773 v4l2_rect_set_size_to(crop, &r);
774 }
775
776 dev->fmt_cap_rect.width = mp->width;
777 dev->fmt_cap_rect.height = mp->height;
778 tpg_s_buf_height(&dev->tpg, mp->height);
779 tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
780 for (p = 0; p < tpg_g_buffers(&dev->tpg); p++)
781 tpg_s_bytesperline(&dev->tpg, p, mp->plane_fmt[p].bytesperline);
782 dev->field_cap = mp->field;
783 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
784 tpg_s_field(&dev->tpg, V4L2_FIELD_TOP, true);
785 else
786 tpg_s_field(&dev->tpg, dev->field_cap, false);
787 tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
788 if (vivid_is_sdtv_cap(dev))
789 dev->tv_field_cap = mp->field;
790 tpg_update_mv_step(&dev->tpg);
791 dev->tpg.colorspace = mp->colorspace;
792 dev->tpg.xfer_func = mp->xfer_func;
793 if (dev->fmt_cap->color_enc == TGP_COLOR_ENC_YCBCR)
794 dev->tpg.ycbcr_enc = mp->ycbcr_enc;
795 else
796 dev->tpg.hsv_enc = mp->hsv_enc;
797 dev->tpg.quantization = mp->quantization;
798
799 return 0;
800 }
801
vidioc_g_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)802 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
803 struct v4l2_format *f)
804 {
805 struct vivid_dev *dev = video_drvdata(file);
806
807 if (!dev->multiplanar)
808 return -ENOTTY;
809 return vivid_g_fmt_vid_cap(file, priv, f);
810 }
811
vidioc_try_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)812 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
813 struct v4l2_format *f)
814 {
815 struct vivid_dev *dev = video_drvdata(file);
816
817 if (!dev->multiplanar)
818 return -ENOTTY;
819 return vivid_try_fmt_vid_cap(file, priv, f);
820 }
821
vidioc_s_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)822 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
823 struct v4l2_format *f)
824 {
825 struct vivid_dev *dev = video_drvdata(file);
826
827 if (!dev->multiplanar)
828 return -ENOTTY;
829 return vivid_s_fmt_vid_cap(file, priv, f);
830 }
831
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)832 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
833 struct v4l2_format *f)
834 {
835 struct vivid_dev *dev = video_drvdata(file);
836
837 if (dev->multiplanar)
838 return -ENOTTY;
839 return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
840 }
841
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)842 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
843 struct v4l2_format *f)
844 {
845 struct vivid_dev *dev = video_drvdata(file);
846
847 if (dev->multiplanar)
848 return -ENOTTY;
849 return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
850 }
851
vidioc_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)852 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
853 struct v4l2_format *f)
854 {
855 struct vivid_dev *dev = video_drvdata(file);
856
857 if (dev->multiplanar)
858 return -ENOTTY;
859 return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
860 }
861
vivid_vid_cap_g_selection(struct file * file,void * priv,struct v4l2_selection * sel)862 int vivid_vid_cap_g_selection(struct file *file, void *priv,
863 struct v4l2_selection *sel)
864 {
865 struct vivid_dev *dev = video_drvdata(file);
866
867 if (!dev->has_crop_cap && !dev->has_compose_cap)
868 return -ENOTTY;
869 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
870 return -EINVAL;
871 if (vivid_is_webcam(dev))
872 return -ENODATA;
873
874 sel->r.left = sel->r.top = 0;
875 switch (sel->target) {
876 case V4L2_SEL_TGT_CROP:
877 if (!dev->has_crop_cap)
878 return -EINVAL;
879 sel->r = dev->crop_cap;
880 break;
881 case V4L2_SEL_TGT_CROP_DEFAULT:
882 case V4L2_SEL_TGT_CROP_BOUNDS:
883 if (!dev->has_crop_cap)
884 return -EINVAL;
885 sel->r = dev->src_rect;
886 break;
887 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
888 if (!dev->has_compose_cap)
889 return -EINVAL;
890 sel->r = vivid_max_rect;
891 break;
892 case V4L2_SEL_TGT_COMPOSE:
893 if (!dev->has_compose_cap)
894 return -EINVAL;
895 sel->r = dev->compose_cap;
896 break;
897 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
898 if (!dev->has_compose_cap)
899 return -EINVAL;
900 sel->r = dev->fmt_cap_rect;
901 break;
902 default:
903 return -EINVAL;
904 }
905 return 0;
906 }
907
vivid_vid_cap_s_selection(struct file * file,void * fh,struct v4l2_selection * s)908 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
909 {
910 struct vivid_dev *dev = video_drvdata(file);
911 struct v4l2_rect *crop = &dev->crop_cap;
912 struct v4l2_rect *compose = &dev->compose_cap;
913 unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
914 int ret;
915
916 if (!dev->has_crop_cap && !dev->has_compose_cap)
917 return -ENOTTY;
918 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
919 return -EINVAL;
920 if (vivid_is_webcam(dev))
921 return -ENODATA;
922
923 switch (s->target) {
924 case V4L2_SEL_TGT_CROP:
925 if (!dev->has_crop_cap)
926 return -EINVAL;
927 ret = vivid_vid_adjust_sel(s->flags, &s->r);
928 if (ret)
929 return ret;
930 v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
931 v4l2_rect_set_max_size(&s->r, &dev->src_rect);
932 v4l2_rect_map_inside(&s->r, &dev->crop_bounds_cap);
933 s->r.top /= factor;
934 s->r.height /= factor;
935 if (dev->has_scaler_cap) {
936 struct v4l2_rect fmt = dev->fmt_cap_rect;
937 struct v4l2_rect max_rect = {
938 0, 0,
939 s->r.width * MAX_ZOOM,
940 s->r.height * MAX_ZOOM
941 };
942 struct v4l2_rect min_rect = {
943 0, 0,
944 s->r.width / MAX_ZOOM,
945 s->r.height / MAX_ZOOM
946 };
947
948 v4l2_rect_set_min_size(&fmt, &min_rect);
949 if (!dev->has_compose_cap)
950 v4l2_rect_set_max_size(&fmt, &max_rect);
951 if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
952 vb2_is_busy(&dev->vb_vid_cap_q))
953 return -EBUSY;
954 if (dev->has_compose_cap) {
955 v4l2_rect_set_min_size(compose, &min_rect);
956 v4l2_rect_set_max_size(compose, &max_rect);
957 v4l2_rect_map_inside(compose, &fmt);
958 }
959 dev->fmt_cap_rect = fmt;
960 tpg_s_buf_height(&dev->tpg, fmt.height);
961 } else if (dev->has_compose_cap) {
962 struct v4l2_rect fmt = dev->fmt_cap_rect;
963
964 v4l2_rect_set_min_size(&fmt, &s->r);
965 if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
966 vb2_is_busy(&dev->vb_vid_cap_q))
967 return -EBUSY;
968 dev->fmt_cap_rect = fmt;
969 tpg_s_buf_height(&dev->tpg, fmt.height);
970 v4l2_rect_set_size_to(compose, &s->r);
971 v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
972 } else {
973 if (!v4l2_rect_same_size(&s->r, &dev->fmt_cap_rect) &&
974 vb2_is_busy(&dev->vb_vid_cap_q))
975 return -EBUSY;
976 v4l2_rect_set_size_to(&dev->fmt_cap_rect, &s->r);
977 v4l2_rect_set_size_to(compose, &s->r);
978 v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
979 tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
980 }
981 s->r.top *= factor;
982 s->r.height *= factor;
983 *crop = s->r;
984 break;
985 case V4L2_SEL_TGT_COMPOSE:
986 if (!dev->has_compose_cap)
987 return -EINVAL;
988 ret = vivid_vid_adjust_sel(s->flags, &s->r);
989 if (ret)
990 return ret;
991 v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
992 v4l2_rect_set_max_size(&s->r, &dev->fmt_cap_rect);
993 if (dev->has_scaler_cap) {
994 struct v4l2_rect max_rect = {
995 0, 0,
996 dev->src_rect.width * MAX_ZOOM,
997 (dev->src_rect.height / factor) * MAX_ZOOM
998 };
999
1000 v4l2_rect_set_max_size(&s->r, &max_rect);
1001 if (dev->has_crop_cap) {
1002 struct v4l2_rect min_rect = {
1003 0, 0,
1004 s->r.width / MAX_ZOOM,
1005 (s->r.height * factor) / MAX_ZOOM
1006 };
1007 struct v4l2_rect max_rect = {
1008 0, 0,
1009 s->r.width * MAX_ZOOM,
1010 (s->r.height * factor) * MAX_ZOOM
1011 };
1012
1013 v4l2_rect_set_min_size(crop, &min_rect);
1014 v4l2_rect_set_max_size(crop, &max_rect);
1015 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
1016 }
1017 } else if (dev->has_crop_cap) {
1018 s->r.top *= factor;
1019 s->r.height *= factor;
1020 v4l2_rect_set_max_size(&s->r, &dev->src_rect);
1021 v4l2_rect_set_size_to(crop, &s->r);
1022 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
1023 s->r.top /= factor;
1024 s->r.height /= factor;
1025 } else {
1026 v4l2_rect_set_size_to(&s->r, &dev->src_rect);
1027 s->r.height /= factor;
1028 }
1029 v4l2_rect_map_inside(&s->r, &dev->fmt_cap_rect);
1030 *compose = s->r;
1031 break;
1032 default:
1033 return -EINVAL;
1034 }
1035
1036 tpg_s_crop_compose(&dev->tpg, crop, compose);
1037 return 0;
1038 }
1039
vivid_vid_cap_g_pixelaspect(struct file * file,void * priv,int type,struct v4l2_fract * f)1040 int vivid_vid_cap_g_pixelaspect(struct file *file, void *priv,
1041 int type, struct v4l2_fract *f)
1042 {
1043 struct vivid_dev *dev = video_drvdata(file);
1044
1045 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1046 return -EINVAL;
1047
1048 switch (vivid_get_pixel_aspect(dev)) {
1049 case TPG_PIXEL_ASPECT_NTSC:
1050 f->numerator = 11;
1051 f->denominator = 10;
1052 break;
1053 case TPG_PIXEL_ASPECT_PAL:
1054 f->numerator = 54;
1055 f->denominator = 59;
1056 break;
1057 default:
1058 break;
1059 }
1060 return 0;
1061 }
1062
1063 static const struct v4l2_audio vivid_audio_inputs[] = {
1064 { 0, "TV", V4L2_AUDCAP_STEREO },
1065 { 1, "Line-In", V4L2_AUDCAP_STEREO },
1066 };
1067
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * inp)1068 int vidioc_enum_input(struct file *file, void *priv,
1069 struct v4l2_input *inp)
1070 {
1071 struct vivid_dev *dev = video_drvdata(file);
1072
1073 if (inp->index >= dev->num_inputs)
1074 return -EINVAL;
1075
1076 inp->type = V4L2_INPUT_TYPE_CAMERA;
1077 switch (dev->input_type[inp->index]) {
1078 case WEBCAM:
1079 snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1080 dev->input_name_counter[inp->index]);
1081 inp->capabilities = 0;
1082 break;
1083 case TV:
1084 snprintf(inp->name, sizeof(inp->name), "TV %u",
1085 dev->input_name_counter[inp->index]);
1086 inp->type = V4L2_INPUT_TYPE_TUNER;
1087 inp->std = V4L2_STD_ALL;
1088 if (dev->has_audio_inputs)
1089 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1090 inp->capabilities = V4L2_IN_CAP_STD;
1091 break;
1092 case SVID:
1093 snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1094 dev->input_name_counter[inp->index]);
1095 inp->std = V4L2_STD_ALL;
1096 if (dev->has_audio_inputs)
1097 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1098 inp->capabilities = V4L2_IN_CAP_STD;
1099 break;
1100 case HDMI:
1101 snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1102 dev->input_name_counter[inp->index]);
1103 inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1104 if (dev->edid_blocks == 0 ||
1105 dev->dv_timings_signal_mode[dev->input] == NO_SIGNAL)
1106 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1107 else if (dev->dv_timings_signal_mode[dev->input] == NO_LOCK ||
1108 dev->dv_timings_signal_mode[dev->input] == OUT_OF_RANGE)
1109 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1110 break;
1111 }
1112 if (dev->sensor_hflip)
1113 inp->status |= V4L2_IN_ST_HFLIP;
1114 if (dev->sensor_vflip)
1115 inp->status |= V4L2_IN_ST_VFLIP;
1116 if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1117 if (dev->std_signal_mode[dev->input] == NO_SIGNAL) {
1118 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1119 } else if (dev->std_signal_mode[dev->input] == NO_LOCK) {
1120 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1121 } else if (vivid_is_tv_cap(dev)) {
1122 switch (tpg_g_quality(&dev->tpg)) {
1123 case TPG_QUAL_GRAY:
1124 inp->status |= V4L2_IN_ST_COLOR_KILL;
1125 break;
1126 case TPG_QUAL_NOISE:
1127 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1128 break;
1129 default:
1130 break;
1131 }
1132 }
1133 }
1134 return 0;
1135 }
1136
vidioc_g_input(struct file * file,void * priv,unsigned * i)1137 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1138 {
1139 struct vivid_dev *dev = video_drvdata(file);
1140
1141 *i = dev->input;
1142 return 0;
1143 }
1144
vidioc_s_input(struct file * file,void * priv,unsigned i)1145 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1146 {
1147 struct vivid_dev *dev = video_drvdata(file);
1148 struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
1149 unsigned brightness;
1150
1151 if (i >= dev->num_inputs)
1152 return -EINVAL;
1153
1154 if (i == dev->input)
1155 return 0;
1156
1157 if (vb2_is_busy(&dev->vb_vid_cap_q) ||
1158 vb2_is_busy(&dev->vb_vbi_cap_q) ||
1159 vb2_is_busy(&dev->vb_meta_cap_q))
1160 return -EBUSY;
1161
1162 dev->input = i;
1163 dev->vid_cap_dev.tvnorms = 0;
1164 if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1165 dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1166 dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1167 }
1168 dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1169 dev->meta_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1170 vivid_update_format_cap(dev, false);
1171
1172 if (dev->colorspace) {
1173 switch (dev->input_type[i]) {
1174 case WEBCAM:
1175 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1176 break;
1177 case TV:
1178 case SVID:
1179 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1180 break;
1181 case HDMI:
1182 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1183 if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1184 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1185 else
1186 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1187 } else {
1188 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1189 }
1190 break;
1191 }
1192 }
1193
1194 /*
1195 * Modify the brightness range depending on the input.
1196 * This makes it easy to use vivid to test if applications can
1197 * handle control range modifications and is also how this is
1198 * typically used in practice as different inputs may be hooked
1199 * up to different receivers with different control ranges.
1200 */
1201 brightness = 128 * i + dev->input_brightness[i];
1202 v4l2_ctrl_modify_range(dev->brightness,
1203 128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1204 v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1205
1206 /* Restore per-input states. */
1207 v4l2_ctrl_activate(dev->ctrl_dv_timings_signal_mode,
1208 vivid_is_hdmi_cap(dev));
1209 v4l2_ctrl_activate(dev->ctrl_dv_timings, vivid_is_hdmi_cap(dev) &&
1210 dev->dv_timings_signal_mode[dev->input] ==
1211 SELECTED_DV_TIMINGS);
1212 v4l2_ctrl_activate(dev->ctrl_std_signal_mode, vivid_is_sdtv_cap(dev));
1213 v4l2_ctrl_activate(dev->ctrl_standard, vivid_is_sdtv_cap(dev) &&
1214 dev->std_signal_mode[dev->input]);
1215
1216 if (vivid_is_hdmi_cap(dev)) {
1217 v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings_signal_mode,
1218 dev->dv_timings_signal_mode[dev->input]);
1219 v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings,
1220 dev->query_dv_timings[dev->input]);
1221 } else if (vivid_is_sdtv_cap(dev)) {
1222 v4l2_ctrl_s_ctrl(dev->ctrl_std_signal_mode,
1223 dev->std_signal_mode[dev->input]);
1224 v4l2_ctrl_s_ctrl(dev->ctrl_standard,
1225 dev->std_signal_mode[dev->input]);
1226 }
1227
1228 return 0;
1229 }
1230
vidioc_enumaudio(struct file * file,void * fh,struct v4l2_audio * vin)1231 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1232 {
1233 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1234 return -EINVAL;
1235 *vin = vivid_audio_inputs[vin->index];
1236 return 0;
1237 }
1238
vidioc_g_audio(struct file * file,void * fh,struct v4l2_audio * vin)1239 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1240 {
1241 struct vivid_dev *dev = video_drvdata(file);
1242
1243 if (!vivid_is_sdtv_cap(dev))
1244 return -EINVAL;
1245 *vin = vivid_audio_inputs[dev->tv_audio_input];
1246 return 0;
1247 }
1248
vidioc_s_audio(struct file * file,void * fh,const struct v4l2_audio * vin)1249 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1250 {
1251 struct vivid_dev *dev = video_drvdata(file);
1252
1253 if (!vivid_is_sdtv_cap(dev))
1254 return -EINVAL;
1255 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1256 return -EINVAL;
1257 dev->tv_audio_input = vin->index;
1258 return 0;
1259 }
1260
vivid_video_g_frequency(struct file * file,void * fh,struct v4l2_frequency * vf)1261 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1262 {
1263 struct vivid_dev *dev = video_drvdata(file);
1264
1265 if (vf->tuner != 0)
1266 return -EINVAL;
1267 vf->frequency = dev->tv_freq;
1268 return 0;
1269 }
1270
vivid_video_s_frequency(struct file * file,void * fh,const struct v4l2_frequency * vf)1271 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1272 {
1273 struct vivid_dev *dev = video_drvdata(file);
1274
1275 if (vf->tuner != 0)
1276 return -EINVAL;
1277 dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1278 if (vivid_is_tv_cap(dev))
1279 vivid_update_quality(dev);
1280 return 0;
1281 }
1282
vivid_video_s_tuner(struct file * file,void * fh,const struct v4l2_tuner * vt)1283 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1284 {
1285 struct vivid_dev *dev = video_drvdata(file);
1286
1287 if (vt->index != 0)
1288 return -EINVAL;
1289 if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1290 return -EINVAL;
1291 dev->tv_audmode = vt->audmode;
1292 return 0;
1293 }
1294
vivid_video_g_tuner(struct file * file,void * fh,struct v4l2_tuner * vt)1295 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1296 {
1297 struct vivid_dev *dev = video_drvdata(file);
1298 enum tpg_quality qual;
1299
1300 if (vt->index != 0)
1301 return -EINVAL;
1302
1303 vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1304 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1305 vt->audmode = dev->tv_audmode;
1306 vt->rangelow = MIN_TV_FREQ;
1307 vt->rangehigh = MAX_TV_FREQ;
1308 qual = vivid_get_quality(dev, &vt->afc);
1309 if (qual == TPG_QUAL_COLOR)
1310 vt->signal = 0xffff;
1311 else if (qual == TPG_QUAL_GRAY)
1312 vt->signal = 0x8000;
1313 else
1314 vt->signal = 0;
1315 if (qual == TPG_QUAL_NOISE) {
1316 vt->rxsubchans = 0;
1317 } else if (qual == TPG_QUAL_GRAY) {
1318 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1319 } else {
1320 unsigned int channel_nr = dev->tv_freq / (6 * 16);
1321 unsigned int options =
1322 (dev->std_cap[dev->input] & V4L2_STD_NTSC_M) ? 4 : 3;
1323
1324 switch (channel_nr % options) {
1325 case 0:
1326 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1327 break;
1328 case 1:
1329 vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1330 break;
1331 case 2:
1332 if (dev->std_cap[dev->input] & V4L2_STD_NTSC_M)
1333 vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1334 else
1335 vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1336 break;
1337 case 3:
1338 vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1339 break;
1340 }
1341 }
1342 strscpy(vt->name, "TV Tuner", sizeof(vt->name));
1343 return 0;
1344 }
1345
1346 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1347 const v4l2_std_id vivid_standard[] = {
1348 V4L2_STD_NTSC_M,
1349 V4L2_STD_NTSC_M_JP,
1350 V4L2_STD_NTSC_M_KR,
1351 V4L2_STD_NTSC_443,
1352 V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1353 V4L2_STD_PAL_I,
1354 V4L2_STD_PAL_DK,
1355 V4L2_STD_PAL_M,
1356 V4L2_STD_PAL_N,
1357 V4L2_STD_PAL_Nc,
1358 V4L2_STD_PAL_60,
1359 V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1360 V4L2_STD_SECAM_DK,
1361 V4L2_STD_SECAM_L,
1362 V4L2_STD_SECAM_LC,
1363 V4L2_STD_UNKNOWN
1364 };
1365
1366 /* Must remain in sync with the vivid_standard array */
1367 const char * const vivid_ctrl_standard_strings[] = {
1368 "NTSC-M",
1369 "NTSC-M-JP",
1370 "NTSC-M-KR",
1371 "NTSC-443",
1372 "PAL-BGH",
1373 "PAL-I",
1374 "PAL-DK",
1375 "PAL-M",
1376 "PAL-N",
1377 "PAL-Nc",
1378 "PAL-60",
1379 "SECAM-BGH",
1380 "SECAM-DK",
1381 "SECAM-L",
1382 "SECAM-Lc",
1383 NULL,
1384 };
1385
vidioc_querystd(struct file * file,void * priv,v4l2_std_id * id)1386 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1387 {
1388 struct vivid_dev *dev = video_drvdata(file);
1389 unsigned int last = dev->query_std_last[dev->input];
1390
1391 if (!vivid_is_sdtv_cap(dev))
1392 return -ENODATA;
1393 if (dev->std_signal_mode[dev->input] == NO_SIGNAL ||
1394 dev->std_signal_mode[dev->input] == NO_LOCK) {
1395 *id = V4L2_STD_UNKNOWN;
1396 return 0;
1397 }
1398 if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1399 *id = V4L2_STD_UNKNOWN;
1400 } else if (dev->std_signal_mode[dev->input] == CURRENT_STD) {
1401 *id = dev->std_cap[dev->input];
1402 } else if (dev->std_signal_mode[dev->input] == SELECTED_STD) {
1403 *id = dev->query_std[dev->input];
1404 } else {
1405 *id = vivid_standard[last];
1406 dev->query_std_last[dev->input] =
1407 (last + 1) % ARRAY_SIZE(vivid_standard);
1408 }
1409
1410 return 0;
1411 }
1412
vivid_vid_cap_s_std(struct file * file,void * priv,v4l2_std_id id)1413 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1414 {
1415 struct vivid_dev *dev = video_drvdata(file);
1416
1417 if (!vivid_is_sdtv_cap(dev))
1418 return -ENODATA;
1419 if (dev->std_cap[dev->input] == id)
1420 return 0;
1421 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1422 return -EBUSY;
1423 dev->std_cap[dev->input] = id;
1424 vivid_update_format_cap(dev, false);
1425 return 0;
1426 }
1427
find_aspect_ratio(u32 width,u32 height,u32 * num,u32 * denom)1428 static void find_aspect_ratio(u32 width, u32 height,
1429 u32 *num, u32 *denom)
1430 {
1431 if (!(height % 3) && ((height * 4 / 3) == width)) {
1432 *num = 4;
1433 *denom = 3;
1434 } else if (!(height % 9) && ((height * 16 / 9) == width)) {
1435 *num = 16;
1436 *denom = 9;
1437 } else if (!(height % 10) && ((height * 16 / 10) == width)) {
1438 *num = 16;
1439 *denom = 10;
1440 } else if (!(height % 4) && ((height * 5 / 4) == width)) {
1441 *num = 5;
1442 *denom = 4;
1443 } else if (!(height % 9) && ((height * 15 / 9) == width)) {
1444 *num = 15;
1445 *denom = 9;
1446 } else { /* default to 16:9 */
1447 *num = 16;
1448 *denom = 9;
1449 }
1450 }
1451
valid_cvt_gtf_timings(struct v4l2_dv_timings * timings)1452 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1453 {
1454 struct v4l2_bt_timings *bt = &timings->bt;
1455 u32 total_h_pixel;
1456 u32 total_v_lines;
1457 u32 h_freq;
1458
1459 if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1460 NULL, NULL))
1461 return false;
1462
1463 total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1464 total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1465
1466 h_freq = (u32)bt->pixelclock / total_h_pixel;
1467
1468 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1469 if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1470 bt->polarities, bt->interlaced, timings))
1471 return true;
1472 }
1473
1474 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1475 struct v4l2_fract aspect_ratio;
1476
1477 find_aspect_ratio(bt->width, bt->height,
1478 &aspect_ratio.numerator,
1479 &aspect_ratio.denominator);
1480 if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1481 bt->polarities, bt->interlaced,
1482 aspect_ratio, timings))
1483 return true;
1484 }
1485 return false;
1486 }
1487
vivid_vid_cap_s_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1488 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1489 struct v4l2_dv_timings *timings)
1490 {
1491 struct vivid_dev *dev = video_drvdata(file);
1492
1493 if (!vivid_is_hdmi_cap(dev))
1494 return -ENODATA;
1495 if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1496 0, NULL, NULL) &&
1497 !valid_cvt_gtf_timings(timings))
1498 return -EINVAL;
1499
1500 if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap[dev->input],
1501 0, false))
1502 return 0;
1503 if (vb2_is_busy(&dev->vb_vid_cap_q))
1504 return -EBUSY;
1505
1506 dev->dv_timings_cap[dev->input] = *timings;
1507 vivid_update_format_cap(dev, false);
1508 return 0;
1509 }
1510
vidioc_query_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1511 int vidioc_query_dv_timings(struct file *file, void *_fh,
1512 struct v4l2_dv_timings *timings)
1513 {
1514 struct vivid_dev *dev = video_drvdata(file);
1515 unsigned int input = dev->input;
1516 unsigned int last = dev->query_dv_timings_last[input];
1517
1518 if (!vivid_is_hdmi_cap(dev))
1519 return -ENODATA;
1520 if (dev->dv_timings_signal_mode[input] == NO_SIGNAL ||
1521 dev->edid_blocks == 0)
1522 return -ENOLINK;
1523 if (dev->dv_timings_signal_mode[input] == NO_LOCK)
1524 return -ENOLCK;
1525 if (dev->dv_timings_signal_mode[input] == OUT_OF_RANGE) {
1526 timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1527 return -ERANGE;
1528 }
1529 if (dev->dv_timings_signal_mode[input] == CURRENT_DV_TIMINGS) {
1530 *timings = dev->dv_timings_cap[input];
1531 } else if (dev->dv_timings_signal_mode[input] ==
1532 SELECTED_DV_TIMINGS) {
1533 *timings =
1534 v4l2_dv_timings_presets[dev->query_dv_timings[input]];
1535 } else {
1536 *timings =
1537 v4l2_dv_timings_presets[last];
1538 dev->query_dv_timings_last[input] =
1539 (last + 1) % dev->query_dv_timings_size;
1540 }
1541 return 0;
1542 }
1543
vidioc_s_edid(struct file * file,void * _fh,struct v4l2_edid * edid)1544 int vidioc_s_edid(struct file *file, void *_fh,
1545 struct v4l2_edid *edid)
1546 {
1547 struct vivid_dev *dev = video_drvdata(file);
1548 u16 phys_addr;
1549 u32 display_present = 0;
1550 unsigned int i, j;
1551 int ret;
1552
1553 memset(edid->reserved, 0, sizeof(edid->reserved));
1554 if (edid->pad >= dev->num_inputs)
1555 return -EINVAL;
1556 if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1557 return -EINVAL;
1558 if (edid->blocks == 0) {
1559 dev->edid_blocks = 0;
1560 if (dev->num_outputs) {
1561 v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, 0);
1562 v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, 0);
1563 }
1564 phys_addr = CEC_PHYS_ADDR_INVALID;
1565 goto set_phys_addr;
1566 }
1567 if (edid->blocks > dev->edid_max_blocks) {
1568 edid->blocks = dev->edid_max_blocks;
1569 return -E2BIG;
1570 }
1571 phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1572 ret = v4l2_phys_addr_validate(phys_addr, &phys_addr, NULL);
1573 if (ret)
1574 return ret;
1575
1576 if (vb2_is_busy(&dev->vb_vid_cap_q))
1577 return -EBUSY;
1578
1579 dev->edid_blocks = edid->blocks;
1580 memcpy(dev->edid, edid->edid, edid->blocks * 128);
1581
1582 for (i = 0, j = 0; i < dev->num_outputs; i++)
1583 if (dev->output_type[i] == HDMI)
1584 display_present |=
1585 dev->display_present[i] << j++;
1586
1587 if (dev->num_outputs) {
1588 v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, display_present);
1589 v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, display_present);
1590 }
1591
1592 set_phys_addr:
1593 /* TODO: a proper hotplug detect cycle should be emulated here */
1594 cec_s_phys_addr(dev->cec_rx_adap, phys_addr, false);
1595
1596 for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++)
1597 cec_s_phys_addr(dev->cec_tx_adap[i],
1598 dev->display_present[i] ?
1599 v4l2_phys_addr_for_input(phys_addr, i + 1) :
1600 CEC_PHYS_ADDR_INVALID,
1601 false);
1602 return 0;
1603 }
1604
vidioc_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)1605 int vidioc_enum_framesizes(struct file *file, void *fh,
1606 struct v4l2_frmsizeenum *fsize)
1607 {
1608 struct vivid_dev *dev = video_drvdata(file);
1609
1610 if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1611 return -EINVAL;
1612 if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1613 return -EINVAL;
1614 if (vivid_is_webcam(dev)) {
1615 if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1616 return -EINVAL;
1617 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1618 fsize->discrete = webcam_sizes[fsize->index];
1619 return 0;
1620 }
1621 if (fsize->index)
1622 return -EINVAL;
1623 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1624 fsize->stepwise.min_width = MIN_WIDTH;
1625 fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1626 fsize->stepwise.step_width = 2;
1627 fsize->stepwise.min_height = MIN_HEIGHT;
1628 fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1629 fsize->stepwise.step_height = 2;
1630 return 0;
1631 }
1632
1633 /* timeperframe is arbitrary and continuous */
vidioc_enum_frameintervals(struct file * file,void * priv,struct v4l2_frmivalenum * fival)1634 int vidioc_enum_frameintervals(struct file *file, void *priv,
1635 struct v4l2_frmivalenum *fival)
1636 {
1637 struct vivid_dev *dev = video_drvdata(file);
1638 const struct vivid_fmt *fmt;
1639 int i;
1640
1641 fmt = vivid_get_format(dev, fival->pixel_format);
1642 if (!fmt)
1643 return -EINVAL;
1644
1645 if (!vivid_is_webcam(dev)) {
1646 if (fival->index)
1647 return -EINVAL;
1648 if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1649 return -EINVAL;
1650 if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1651 return -EINVAL;
1652 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1653 fival->discrete = dev->timeperframe_vid_cap;
1654 return 0;
1655 }
1656
1657 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1658 if (fival->width == webcam_sizes[i].width &&
1659 fival->height == webcam_sizes[i].height)
1660 break;
1661 if (i == ARRAY_SIZE(webcam_sizes))
1662 return -EINVAL;
1663 if (fival->index >= webcam_ival_count(dev, i))
1664 return -EINVAL;
1665 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1666 fival->discrete = webcam_intervals[fival->index];
1667 return 0;
1668 }
1669
vivid_vid_cap_g_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1670 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1671 struct v4l2_streamparm *parm)
1672 {
1673 struct vivid_dev *dev = video_drvdata(file);
1674
1675 if (parm->type != (dev->multiplanar ?
1676 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1677 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1678 return -EINVAL;
1679
1680 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1681 parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1682 parm->parm.capture.readbuffers = 1;
1683 return 0;
1684 }
1685
vivid_vid_cap_s_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1686 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1687 struct v4l2_streamparm *parm)
1688 {
1689 struct vivid_dev *dev = video_drvdata(file);
1690 unsigned int ival_sz = webcam_ival_count(dev, dev->webcam_size_idx);
1691 struct v4l2_fract tpf;
1692 unsigned i;
1693
1694 if (parm->type != (dev->multiplanar ?
1695 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1696 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1697 return -EINVAL;
1698 if (!vivid_is_webcam(dev))
1699 return vivid_vid_cap_g_parm(file, priv, parm);
1700
1701 tpf = parm->parm.capture.timeperframe;
1702
1703 if (tpf.denominator == 0)
1704 tpf = webcam_intervals[ival_sz - 1];
1705 for (i = 0; i < ival_sz; i++)
1706 if (V4L2_FRACT_COMPARE(tpf, >=, webcam_intervals[i]))
1707 break;
1708 if (i == ival_sz)
1709 i = ival_sz - 1;
1710 dev->webcam_ival_idx = i;
1711 tpf = webcam_intervals[dev->webcam_ival_idx];
1712
1713 /* resync the thread's timings */
1714 dev->cap_seq_resync = true;
1715 dev->timeperframe_vid_cap = tpf;
1716 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1717 parm->parm.capture.timeperframe = tpf;
1718 parm->parm.capture.readbuffers = 1;
1719 return 0;
1720 }
1721