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 static const struct vivid_fmt formats_ovl[] = {
25 {
26 .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
27 .vdownsampling = { 1 },
28 .bit_depth = { 16 },
29 .planes = 1,
30 .buffers = 1,
31 },
32 {
33 .fourcc = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
34 .vdownsampling = { 1 },
35 .bit_depth = { 16 },
36 .planes = 1,
37 .buffers = 1,
38 },
39 {
40 .fourcc = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
41 .vdownsampling = { 1 },
42 .bit_depth = { 16 },
43 .planes = 1,
44 .buffers = 1,
45 },
46 };
47
48 /* The number of discrete webcam framesizes */
49 #define VIVID_WEBCAM_SIZES 6
50 /* The number of discrete webcam frameintervals */
51 #define VIVID_WEBCAM_IVALS (VIVID_WEBCAM_SIZES * 2)
52
53 /* Sizes must be in increasing order */
54 static const struct v4l2_frmsize_discrete webcam_sizes[VIVID_WEBCAM_SIZES] = {
55 { 320, 180 },
56 { 640, 360 },
57 { 640, 480 },
58 { 1280, 720 },
59 { 1920, 1080 },
60 { 3840, 2160 },
61 };
62
63 /*
64 * Intervals must be in increasing order and there must be twice as many
65 * elements in this array as there are in webcam_sizes.
66 */
67 static const struct v4l2_fract webcam_intervals[VIVID_WEBCAM_IVALS] = {
68 { 1, 1 },
69 { 1, 2 },
70 { 1, 4 },
71 { 1, 5 },
72 { 1, 10 },
73 { 2, 25 },
74 { 1, 15 },
75 { 1, 25 },
76 { 1, 30 },
77 { 1, 40 },
78 { 1, 50 },
79 { 1, 60 },
80 };
81
vid_cap_queue_setup(struct vb2_queue * vq,unsigned * nbuffers,unsigned * nplanes,unsigned sizes[],struct device * alloc_devs[])82 static int vid_cap_queue_setup(struct vb2_queue *vq,
83 unsigned *nbuffers, unsigned *nplanes,
84 unsigned sizes[], struct device *alloc_devs[])
85 {
86 struct vivid_dev *dev = vb2_get_drv_priv(vq);
87 unsigned buffers = tpg_g_buffers(&dev->tpg);
88 unsigned h = dev->fmt_cap_rect.height;
89 unsigned p;
90
91 if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
92 /*
93 * You cannot use read() with FIELD_ALTERNATE since the field
94 * information (TOP/BOTTOM) cannot be passed back to the user.
95 */
96 if (vb2_fileio_is_active(vq))
97 return -EINVAL;
98 }
99
100 if (dev->queue_setup_error) {
101 /*
102 * Error injection: test what happens if queue_setup() returns
103 * an error.
104 */
105 dev->queue_setup_error = false;
106 return -EINVAL;
107 }
108 if (*nplanes) {
109 /*
110 * Check if the number of requested planes match
111 * the number of buffers in the current format. You can't mix that.
112 */
113 if (*nplanes != buffers)
114 return -EINVAL;
115 for (p = 0; p < buffers; p++) {
116 if (sizes[p] < tpg_g_line_width(&dev->tpg, p) * h +
117 dev->fmt_cap->data_offset[p])
118 return -EINVAL;
119 }
120 } else {
121 for (p = 0; p < buffers; p++)
122 sizes[p] = (tpg_g_line_width(&dev->tpg, p) * h) /
123 dev->fmt_cap->vdownsampling[p] +
124 dev->fmt_cap->data_offset[p];
125 }
126
127 if (vq->num_buffers + *nbuffers < 2)
128 *nbuffers = 2 - vq->num_buffers;
129
130 *nplanes = buffers;
131
132 dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
133 for (p = 0; p < buffers; p++)
134 dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
135
136 return 0;
137 }
138
vid_cap_buf_prepare(struct vb2_buffer * vb)139 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
140 {
141 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
142 unsigned long size;
143 unsigned buffers = tpg_g_buffers(&dev->tpg);
144 unsigned p;
145
146 dprintk(dev, 1, "%s\n", __func__);
147
148 if (WARN_ON(NULL == dev->fmt_cap))
149 return -EINVAL;
150
151 if (dev->buf_prepare_error) {
152 /*
153 * Error injection: test what happens if buf_prepare() returns
154 * an error.
155 */
156 dev->buf_prepare_error = false;
157 return -EINVAL;
158 }
159 for (p = 0; p < buffers; p++) {
160 size = (tpg_g_line_width(&dev->tpg, p) *
161 dev->fmt_cap_rect.height) /
162 dev->fmt_cap->vdownsampling[p] +
163 dev->fmt_cap->data_offset[p];
164
165 if (vb2_plane_size(vb, p) < size) {
166 dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
167 __func__, p, vb2_plane_size(vb, p), size);
168 return -EINVAL;
169 }
170
171 vb2_set_plane_payload(vb, p, size);
172 vb->planes[p].data_offset = dev->fmt_cap->data_offset[p];
173 }
174
175 return 0;
176 }
177
vid_cap_buf_finish(struct vb2_buffer * vb)178 static void vid_cap_buf_finish(struct vb2_buffer *vb)
179 {
180 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
181 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
182 struct v4l2_timecode *tc = &vbuf->timecode;
183 unsigned fps = 25;
184 unsigned seq = vbuf->sequence;
185
186 if (!vivid_is_sdtv_cap(dev))
187 return;
188
189 /*
190 * Set the timecode. Rarely used, so it is interesting to
191 * test this.
192 */
193 vbuf->flags |= V4L2_BUF_FLAG_TIMECODE;
194 if (dev->std_cap[dev->input] & V4L2_STD_525_60)
195 fps = 30;
196 tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
197 tc->flags = 0;
198 tc->frames = seq % fps;
199 tc->seconds = (seq / fps) % 60;
200 tc->minutes = (seq / (60 * fps)) % 60;
201 tc->hours = (seq / (60 * 60 * fps)) % 24;
202 }
203
vid_cap_buf_queue(struct vb2_buffer * vb)204 static void vid_cap_buf_queue(struct vb2_buffer *vb)
205 {
206 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
207 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
208 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
209
210 dprintk(dev, 1, "%s\n", __func__);
211
212 spin_lock(&dev->slock);
213 list_add_tail(&buf->list, &dev->vid_cap_active);
214 spin_unlock(&dev->slock);
215 }
216
vid_cap_start_streaming(struct vb2_queue * vq,unsigned count)217 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
218 {
219 struct vivid_dev *dev = vb2_get_drv_priv(vq);
220 unsigned i;
221 int err;
222
223 if (vb2_is_streaming(&dev->vb_vid_out_q))
224 dev->can_loop_video = vivid_vid_can_loop(dev);
225
226 if (dev->kthread_vid_cap)
227 return 0;
228
229 dev->vid_cap_seq_count = 0;
230 dprintk(dev, 1, "%s\n", __func__);
231 for (i = 0; i < VIDEO_MAX_FRAME; i++)
232 dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
233 if (dev->start_streaming_error) {
234 dev->start_streaming_error = false;
235 err = -EINVAL;
236 } else {
237 err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
238 }
239 if (err) {
240 struct vivid_buffer *buf, *tmp;
241
242 list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
243 list_del(&buf->list);
244 vb2_buffer_done(&buf->vb.vb2_buf,
245 VB2_BUF_STATE_QUEUED);
246 }
247 }
248 return err;
249 }
250
251 /* abort streaming and wait for last buffer */
vid_cap_stop_streaming(struct vb2_queue * vq)252 static void vid_cap_stop_streaming(struct vb2_queue *vq)
253 {
254 struct vivid_dev *dev = vb2_get_drv_priv(vq);
255
256 dprintk(dev, 1, "%s\n", __func__);
257 vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
258 dev->can_loop_video = false;
259 }
260
vid_cap_buf_request_complete(struct vb2_buffer * vb)261 static void vid_cap_buf_request_complete(struct vb2_buffer *vb)
262 {
263 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
264
265 v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vid_cap);
266 }
267
268 const struct vb2_ops vivid_vid_cap_qops = {
269 .queue_setup = vid_cap_queue_setup,
270 .buf_prepare = vid_cap_buf_prepare,
271 .buf_finish = vid_cap_buf_finish,
272 .buf_queue = vid_cap_buf_queue,
273 .start_streaming = vid_cap_start_streaming,
274 .stop_streaming = vid_cap_stop_streaming,
275 .buf_request_complete = vid_cap_buf_request_complete,
276 .wait_prepare = vb2_ops_wait_prepare,
277 .wait_finish = vb2_ops_wait_finish,
278 };
279
280 /*
281 * Determine the 'picture' quality based on the current TV frequency: either
282 * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
283 * signal or NOISE for no signal.
284 */
vivid_update_quality(struct vivid_dev * dev)285 void vivid_update_quality(struct vivid_dev *dev)
286 {
287 unsigned freq_modulus;
288
289 if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
290 /*
291 * The 'noise' will only be replaced by the actual video
292 * if the output video matches the input video settings.
293 */
294 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
295 return;
296 }
297 if (vivid_is_hdmi_cap(dev) &&
298 VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode[dev->input])) {
299 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
300 return;
301 }
302 if (vivid_is_sdtv_cap(dev) &&
303 VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) {
304 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
305 return;
306 }
307 if (!vivid_is_tv_cap(dev)) {
308 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
309 return;
310 }
311
312 /*
313 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
314 * From +/- 0.25 MHz around the channel there is color, and from
315 * +/- 1 MHz there is grayscale (chroma is lost).
316 * Everywhere else it is just noise.
317 */
318 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
319 if (freq_modulus > 2 * 16) {
320 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
321 next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
322 return;
323 }
324 if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
325 tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
326 else
327 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
328 }
329
330 /*
331 * Get the current picture quality and the associated afc value.
332 */
vivid_get_quality(struct vivid_dev * dev,s32 * afc)333 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
334 {
335 unsigned freq_modulus;
336
337 if (afc)
338 *afc = 0;
339 if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
340 tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
341 return tpg_g_quality(&dev->tpg);
342
343 /*
344 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
345 * From +/- 0.25 MHz around the channel there is color, and from
346 * +/- 1 MHz there is grayscale (chroma is lost).
347 * Everywhere else it is just gray.
348 */
349 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
350 if (afc)
351 *afc = freq_modulus - 1 * 16;
352 return TPG_QUAL_GRAY;
353 }
354
vivid_get_video_aspect(const struct vivid_dev * dev)355 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
356 {
357 if (vivid_is_sdtv_cap(dev))
358 return dev->std_aspect_ratio[dev->input];
359
360 if (vivid_is_hdmi_cap(dev))
361 return dev->dv_timings_aspect_ratio[dev->input];
362
363 return TPG_VIDEO_ASPECT_IMAGE;
364 }
365
vivid_get_pixel_aspect(const struct vivid_dev * dev)366 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
367 {
368 if (vivid_is_sdtv_cap(dev))
369 return (dev->std_cap[dev->input] & V4L2_STD_525_60) ?
370 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
371
372 if (vivid_is_hdmi_cap(dev) &&
373 dev->src_rect.width == 720 && dev->src_rect.height <= 576)
374 return dev->src_rect.height == 480 ?
375 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
376
377 return TPG_PIXEL_ASPECT_SQUARE;
378 }
379
380 /*
381 * Called whenever the format has to be reset which can occur when
382 * changing inputs, standard, timings, etc.
383 */
vivid_update_format_cap(struct vivid_dev * dev,bool keep_controls)384 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
385 {
386 struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
387 unsigned size;
388 u64 pixelclock;
389
390 switch (dev->input_type[dev->input]) {
391 case WEBCAM:
392 default:
393 dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
394 dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
395 dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
396 dev->field_cap = V4L2_FIELD_NONE;
397 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
398 break;
399 case TV:
400 case SVID:
401 dev->field_cap = dev->tv_field_cap;
402 dev->src_rect.width = 720;
403 if (dev->std_cap[dev->input] & V4L2_STD_525_60) {
404 dev->src_rect.height = 480;
405 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
406 dev->service_set_cap = V4L2_SLICED_CAPTION_525;
407 } else {
408 dev->src_rect.height = 576;
409 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
410 dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
411 }
412 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
413 break;
414 case HDMI:
415 dev->src_rect.width = bt->width;
416 dev->src_rect.height = bt->height;
417 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
418 if (dev->reduced_fps && can_reduce_fps(bt)) {
419 pixelclock = div_u64(bt->pixelclock * 1000, 1001);
420 bt->flags |= V4L2_DV_FL_REDUCED_FPS;
421 } else {
422 pixelclock = bt->pixelclock;
423 bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
424 }
425 dev->timeperframe_vid_cap = (struct v4l2_fract) {
426 size / 100, (u32)pixelclock / 100
427 };
428 if (bt->interlaced)
429 dev->field_cap = V4L2_FIELD_ALTERNATE;
430 else
431 dev->field_cap = V4L2_FIELD_NONE;
432
433 /*
434 * We can be called from within s_ctrl, in that case we can't
435 * set/get controls. Luckily we don't need to in that case.
436 */
437 if (keep_controls || !dev->colorspace)
438 break;
439 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
440 if (bt->width == 720 && bt->height <= 576)
441 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
442 else
443 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
444 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
445 } else {
446 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
447 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
448 }
449 tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
450 break;
451 }
452 vfree(dev->bitmap_cap);
453 dev->bitmap_cap = NULL;
454 vivid_update_quality(dev);
455 tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
456 dev->crop_cap = dev->src_rect;
457 dev->crop_bounds_cap = dev->src_rect;
458 dev->compose_cap = dev->crop_cap;
459 if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
460 dev->compose_cap.height /= 2;
461 dev->fmt_cap_rect = dev->compose_cap;
462 tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
463 tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
464 tpg_update_mv_step(&dev->tpg);
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
567 fmt = vivid_get_format(dev, mp->pixelformat);
568 if (!fmt) {
569 dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
570 mp->pixelformat);
571 mp->pixelformat = V4L2_PIX_FMT_YUYV;
572 fmt = vivid_get_format(dev, mp->pixelformat);
573 }
574
575 mp->field = vivid_field_cap(dev, mp->field);
576 if (vivid_is_webcam(dev)) {
577 const struct v4l2_frmsize_discrete *sz =
578 v4l2_find_nearest_size(webcam_sizes,
579 VIVID_WEBCAM_SIZES, width,
580 height, mp->width, mp->height);
581
582 w = sz->width;
583 h = sz->height;
584 } else if (vivid_is_sdtv_cap(dev)) {
585 w = 720;
586 h = (dev->std_cap[dev->input] & V4L2_STD_525_60) ? 480 : 576;
587 } else {
588 w = dev->src_rect.width;
589 h = dev->src_rect.height;
590 }
591 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
592 factor = 2;
593 if (vivid_is_webcam(dev) ||
594 (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
595 mp->width = w;
596 mp->height = h / factor;
597 } else {
598 struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
599
600 v4l2_rect_set_min_size(&r, &vivid_min_rect);
601 v4l2_rect_set_max_size(&r, &vivid_max_rect);
602 if (dev->has_scaler_cap && !dev->has_compose_cap) {
603 struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
604
605 v4l2_rect_set_max_size(&r, &max_r);
606 } else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
607 v4l2_rect_set_max_size(&r, &dev->src_rect);
608 } else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
609 v4l2_rect_set_min_size(&r, &dev->src_rect);
610 }
611 mp->width = r.width;
612 mp->height = r.height / factor;
613 }
614
615 /* This driver supports custom bytesperline values */
616
617 mp->num_planes = fmt->buffers;
618 for (p = 0; p < fmt->buffers; p++) {
619 /* Calculate the minimum supported bytesperline value */
620 bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
621 /* Calculate the maximum supported bytesperline value */
622 max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
623
624 if (pfmt[p].bytesperline > max_bpl)
625 pfmt[p].bytesperline = max_bpl;
626 if (pfmt[p].bytesperline < bytesperline)
627 pfmt[p].bytesperline = bytesperline;
628
629 pfmt[p].sizeimage = (pfmt[p].bytesperline * mp->height) /
630 fmt->vdownsampling[p] + fmt->data_offset[p];
631
632 memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
633 }
634 for (p = fmt->buffers; p < fmt->planes; p++)
635 pfmt[0].sizeimage += (pfmt[0].bytesperline * mp->height *
636 (fmt->bit_depth[p] / fmt->vdownsampling[p])) /
637 (fmt->bit_depth[0] / fmt->vdownsampling[0]);
638
639 mp->colorspace = vivid_colorspace_cap(dev);
640 if (fmt->color_enc == TGP_COLOR_ENC_HSV)
641 mp->hsv_enc = vivid_hsv_enc_cap(dev);
642 else
643 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
644 mp->xfer_func = vivid_xfer_func_cap(dev);
645 mp->quantization = vivid_quantization_cap(dev);
646 memset(mp->reserved, 0, sizeof(mp->reserved));
647 return 0;
648 }
649
vivid_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)650 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
651 struct v4l2_format *f)
652 {
653 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
654 struct vivid_dev *dev = video_drvdata(file);
655 struct v4l2_rect *crop = &dev->crop_cap;
656 struct v4l2_rect *compose = &dev->compose_cap;
657 struct vb2_queue *q = &dev->vb_vid_cap_q;
658 int ret = vivid_try_fmt_vid_cap(file, priv, f);
659 unsigned factor = 1;
660 unsigned p;
661 unsigned i;
662
663 if (ret < 0)
664 return ret;
665
666 if (vb2_is_busy(q)) {
667 dprintk(dev, 1, "%s device busy\n", __func__);
668 return -EBUSY;
669 }
670
671 if (dev->overlay_cap_owner && dev->fb_cap.fmt.pixelformat != mp->pixelformat) {
672 dprintk(dev, 1, "overlay is active, can't change pixelformat\n");
673 return -EBUSY;
674 }
675
676 dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
677 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
678 factor = 2;
679
680 /* Note: the webcam input doesn't support scaling, cropping or composing */
681
682 if (!vivid_is_webcam(dev) &&
683 (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
684 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
685
686 if (dev->has_scaler_cap) {
687 if (dev->has_compose_cap)
688 v4l2_rect_map_inside(compose, &r);
689 else
690 *compose = r;
691 if (dev->has_crop_cap && !dev->has_compose_cap) {
692 struct v4l2_rect min_r = {
693 0, 0,
694 r.width / MAX_ZOOM,
695 factor * r.height / MAX_ZOOM
696 };
697 struct v4l2_rect max_r = {
698 0, 0,
699 r.width * MAX_ZOOM,
700 factor * r.height * MAX_ZOOM
701 };
702
703 v4l2_rect_set_min_size(crop, &min_r);
704 v4l2_rect_set_max_size(crop, &max_r);
705 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
706 } else if (dev->has_crop_cap) {
707 struct v4l2_rect min_r = {
708 0, 0,
709 compose->width / MAX_ZOOM,
710 factor * compose->height / MAX_ZOOM
711 };
712 struct v4l2_rect max_r = {
713 0, 0,
714 compose->width * MAX_ZOOM,
715 factor * compose->height * MAX_ZOOM
716 };
717
718 v4l2_rect_set_min_size(crop, &min_r);
719 v4l2_rect_set_max_size(crop, &max_r);
720 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
721 }
722 } else if (dev->has_crop_cap && !dev->has_compose_cap) {
723 r.height *= factor;
724 v4l2_rect_set_size_to(crop, &r);
725 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
726 r = *crop;
727 r.height /= factor;
728 v4l2_rect_set_size_to(compose, &r);
729 } else if (!dev->has_crop_cap) {
730 v4l2_rect_map_inside(compose, &r);
731 } else {
732 r.height *= factor;
733 v4l2_rect_set_max_size(crop, &r);
734 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
735 compose->top *= factor;
736 compose->height *= factor;
737 v4l2_rect_set_size_to(compose, crop);
738 v4l2_rect_map_inside(compose, &r);
739 compose->top /= factor;
740 compose->height /= factor;
741 }
742 } else if (vivid_is_webcam(dev)) {
743 /* Guaranteed to be a match */
744 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
745 if (webcam_sizes[i].width == mp->width &&
746 webcam_sizes[i].height == mp->height)
747 break;
748 dev->webcam_size_idx = i;
749 if (dev->webcam_ival_idx >= 2 * (VIVID_WEBCAM_SIZES - i))
750 dev->webcam_ival_idx = 2 * (VIVID_WEBCAM_SIZES - i) - 1;
751 vivid_update_format_cap(dev, false);
752 } else {
753 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
754
755 v4l2_rect_set_size_to(compose, &r);
756 r.height *= factor;
757 v4l2_rect_set_size_to(crop, &r);
758 }
759
760 dev->fmt_cap_rect.width = mp->width;
761 dev->fmt_cap_rect.height = mp->height;
762 tpg_s_buf_height(&dev->tpg, mp->height);
763 tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
764 for (p = 0; p < tpg_g_buffers(&dev->tpg); p++)
765 tpg_s_bytesperline(&dev->tpg, p, mp->plane_fmt[p].bytesperline);
766 dev->field_cap = mp->field;
767 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
768 tpg_s_field(&dev->tpg, V4L2_FIELD_TOP, true);
769 else
770 tpg_s_field(&dev->tpg, dev->field_cap, false);
771 tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
772 if (vivid_is_sdtv_cap(dev))
773 dev->tv_field_cap = mp->field;
774 tpg_update_mv_step(&dev->tpg);
775 return 0;
776 }
777
vidioc_g_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)778 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
779 struct v4l2_format *f)
780 {
781 struct vivid_dev *dev = video_drvdata(file);
782
783 if (!dev->multiplanar)
784 return -ENOTTY;
785 return vivid_g_fmt_vid_cap(file, priv, f);
786 }
787
vidioc_try_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)788 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
789 struct v4l2_format *f)
790 {
791 struct vivid_dev *dev = video_drvdata(file);
792
793 if (!dev->multiplanar)
794 return -ENOTTY;
795 return vivid_try_fmt_vid_cap(file, priv, f);
796 }
797
vidioc_s_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)798 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
799 struct v4l2_format *f)
800 {
801 struct vivid_dev *dev = video_drvdata(file);
802
803 if (!dev->multiplanar)
804 return -ENOTTY;
805 return vivid_s_fmt_vid_cap(file, priv, f);
806 }
807
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)808 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
809 struct v4l2_format *f)
810 {
811 struct vivid_dev *dev = video_drvdata(file);
812
813 if (dev->multiplanar)
814 return -ENOTTY;
815 return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
816 }
817
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)818 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
819 struct v4l2_format *f)
820 {
821 struct vivid_dev *dev = video_drvdata(file);
822
823 if (dev->multiplanar)
824 return -ENOTTY;
825 return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
826 }
827
vidioc_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)828 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
829 struct v4l2_format *f)
830 {
831 struct vivid_dev *dev = video_drvdata(file);
832
833 if (dev->multiplanar)
834 return -ENOTTY;
835 return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
836 }
837
vivid_vid_cap_g_selection(struct file * file,void * priv,struct v4l2_selection * sel)838 int vivid_vid_cap_g_selection(struct file *file, void *priv,
839 struct v4l2_selection *sel)
840 {
841 struct vivid_dev *dev = video_drvdata(file);
842
843 if (!dev->has_crop_cap && !dev->has_compose_cap)
844 return -ENOTTY;
845 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
846 return -EINVAL;
847 if (vivid_is_webcam(dev))
848 return -ENODATA;
849
850 sel->r.left = sel->r.top = 0;
851 switch (sel->target) {
852 case V4L2_SEL_TGT_CROP:
853 if (!dev->has_crop_cap)
854 return -EINVAL;
855 sel->r = dev->crop_cap;
856 break;
857 case V4L2_SEL_TGT_CROP_DEFAULT:
858 case V4L2_SEL_TGT_CROP_BOUNDS:
859 if (!dev->has_crop_cap)
860 return -EINVAL;
861 sel->r = dev->src_rect;
862 break;
863 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
864 if (!dev->has_compose_cap)
865 return -EINVAL;
866 sel->r = vivid_max_rect;
867 break;
868 case V4L2_SEL_TGT_COMPOSE:
869 if (!dev->has_compose_cap)
870 return -EINVAL;
871 sel->r = dev->compose_cap;
872 break;
873 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
874 if (!dev->has_compose_cap)
875 return -EINVAL;
876 sel->r = dev->fmt_cap_rect;
877 break;
878 default:
879 return -EINVAL;
880 }
881 return 0;
882 }
883
vivid_vid_cap_s_selection(struct file * file,void * fh,struct v4l2_selection * s)884 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
885 {
886 struct vivid_dev *dev = video_drvdata(file);
887 struct v4l2_rect *crop = &dev->crop_cap;
888 struct v4l2_rect *compose = &dev->compose_cap;
889 unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
890 int ret;
891
892 if (!dev->has_crop_cap && !dev->has_compose_cap)
893 return -ENOTTY;
894 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
895 return -EINVAL;
896 if (vivid_is_webcam(dev))
897 return -ENODATA;
898
899 switch (s->target) {
900 case V4L2_SEL_TGT_CROP:
901 if (!dev->has_crop_cap)
902 return -EINVAL;
903 ret = vivid_vid_adjust_sel(s->flags, &s->r);
904 if (ret)
905 return ret;
906 v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
907 v4l2_rect_set_max_size(&s->r, &dev->src_rect);
908 v4l2_rect_map_inside(&s->r, &dev->crop_bounds_cap);
909 s->r.top /= factor;
910 s->r.height /= factor;
911 if (dev->has_scaler_cap) {
912 struct v4l2_rect fmt = dev->fmt_cap_rect;
913 struct v4l2_rect max_rect = {
914 0, 0,
915 s->r.width * MAX_ZOOM,
916 s->r.height * MAX_ZOOM
917 };
918 struct v4l2_rect min_rect = {
919 0, 0,
920 s->r.width / MAX_ZOOM,
921 s->r.height / MAX_ZOOM
922 };
923
924 v4l2_rect_set_min_size(&fmt, &min_rect);
925 if (!dev->has_compose_cap)
926 v4l2_rect_set_max_size(&fmt, &max_rect);
927 if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
928 vb2_is_busy(&dev->vb_vid_cap_q))
929 return -EBUSY;
930 if (dev->has_compose_cap) {
931 v4l2_rect_set_min_size(compose, &min_rect);
932 v4l2_rect_set_max_size(compose, &max_rect);
933 }
934 dev->fmt_cap_rect = fmt;
935 tpg_s_buf_height(&dev->tpg, fmt.height);
936 } else if (dev->has_compose_cap) {
937 struct v4l2_rect fmt = dev->fmt_cap_rect;
938
939 v4l2_rect_set_min_size(&fmt, &s->r);
940 if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
941 vb2_is_busy(&dev->vb_vid_cap_q))
942 return -EBUSY;
943 dev->fmt_cap_rect = fmt;
944 tpg_s_buf_height(&dev->tpg, fmt.height);
945 v4l2_rect_set_size_to(compose, &s->r);
946 v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
947 } else {
948 if (!v4l2_rect_same_size(&s->r, &dev->fmt_cap_rect) &&
949 vb2_is_busy(&dev->vb_vid_cap_q))
950 return -EBUSY;
951 v4l2_rect_set_size_to(&dev->fmt_cap_rect, &s->r);
952 v4l2_rect_set_size_to(compose, &s->r);
953 v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
954 tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
955 }
956 s->r.top *= factor;
957 s->r.height *= factor;
958 *crop = s->r;
959 break;
960 case V4L2_SEL_TGT_COMPOSE:
961 if (!dev->has_compose_cap)
962 return -EINVAL;
963 ret = vivid_vid_adjust_sel(s->flags, &s->r);
964 if (ret)
965 return ret;
966 v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
967 v4l2_rect_set_max_size(&s->r, &dev->fmt_cap_rect);
968 if (dev->has_scaler_cap) {
969 struct v4l2_rect max_rect = {
970 0, 0,
971 dev->src_rect.width * MAX_ZOOM,
972 (dev->src_rect.height / factor) * MAX_ZOOM
973 };
974
975 v4l2_rect_set_max_size(&s->r, &max_rect);
976 if (dev->has_crop_cap) {
977 struct v4l2_rect min_rect = {
978 0, 0,
979 s->r.width / MAX_ZOOM,
980 (s->r.height * factor) / MAX_ZOOM
981 };
982 struct v4l2_rect max_rect = {
983 0, 0,
984 s->r.width * MAX_ZOOM,
985 (s->r.height * factor) * MAX_ZOOM
986 };
987
988 v4l2_rect_set_min_size(crop, &min_rect);
989 v4l2_rect_set_max_size(crop, &max_rect);
990 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
991 }
992 } else if (dev->has_crop_cap) {
993 s->r.top *= factor;
994 s->r.height *= factor;
995 v4l2_rect_set_max_size(&s->r, &dev->src_rect);
996 v4l2_rect_set_size_to(crop, &s->r);
997 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
998 s->r.top /= factor;
999 s->r.height /= factor;
1000 } else {
1001 v4l2_rect_set_size_to(&s->r, &dev->src_rect);
1002 s->r.height /= factor;
1003 }
1004 v4l2_rect_map_inside(&s->r, &dev->fmt_cap_rect);
1005 if (dev->bitmap_cap && (compose->width != s->r.width ||
1006 compose->height != s->r.height)) {
1007 vfree(dev->bitmap_cap);
1008 dev->bitmap_cap = NULL;
1009 }
1010 *compose = s->r;
1011 break;
1012 default:
1013 return -EINVAL;
1014 }
1015
1016 tpg_s_crop_compose(&dev->tpg, crop, compose);
1017 return 0;
1018 }
1019
vivid_vid_cap_g_pixelaspect(struct file * file,void * priv,int type,struct v4l2_fract * f)1020 int vivid_vid_cap_g_pixelaspect(struct file *file, void *priv,
1021 int type, struct v4l2_fract *f)
1022 {
1023 struct vivid_dev *dev = video_drvdata(file);
1024
1025 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1026 return -EINVAL;
1027
1028 switch (vivid_get_pixel_aspect(dev)) {
1029 case TPG_PIXEL_ASPECT_NTSC:
1030 f->numerator = 11;
1031 f->denominator = 10;
1032 break;
1033 case TPG_PIXEL_ASPECT_PAL:
1034 f->numerator = 54;
1035 f->denominator = 59;
1036 break;
1037 default:
1038 break;
1039 }
1040 return 0;
1041 }
1042
vidioc_enum_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_fmtdesc * f)1043 int vidioc_enum_fmt_vid_overlay(struct file *file, void *priv,
1044 struct v4l2_fmtdesc *f)
1045 {
1046 struct vivid_dev *dev = video_drvdata(file);
1047 const struct vivid_fmt *fmt;
1048
1049 if (dev->multiplanar)
1050 return -ENOTTY;
1051
1052 if (f->index >= ARRAY_SIZE(formats_ovl))
1053 return -EINVAL;
1054
1055 fmt = &formats_ovl[f->index];
1056
1057 f->pixelformat = fmt->fourcc;
1058 return 0;
1059 }
1060
vidioc_g_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1061 int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
1062 struct v4l2_format *f)
1063 {
1064 struct vivid_dev *dev = video_drvdata(file);
1065 const struct v4l2_rect *compose = &dev->compose_cap;
1066 struct v4l2_window *win = &f->fmt.win;
1067 unsigned clipcount = win->clipcount;
1068
1069 if (dev->multiplanar)
1070 return -ENOTTY;
1071
1072 win->w.top = dev->overlay_cap_top;
1073 win->w.left = dev->overlay_cap_left;
1074 win->w.width = compose->width;
1075 win->w.height = compose->height;
1076 win->field = dev->overlay_cap_field;
1077 win->clipcount = dev->clipcount_cap;
1078 if (clipcount > dev->clipcount_cap)
1079 clipcount = dev->clipcount_cap;
1080 if (dev->bitmap_cap == NULL)
1081 win->bitmap = NULL;
1082 else if (win->bitmap) {
1083 if (copy_to_user(win->bitmap, dev->bitmap_cap,
1084 ((compose->width + 7) / 8) * compose->height))
1085 return -EFAULT;
1086 }
1087 if (clipcount && win->clips) {
1088 if (copy_to_user(win->clips, dev->clips_cap,
1089 clipcount * sizeof(dev->clips_cap[0])))
1090 return -EFAULT;
1091 }
1092 return 0;
1093 }
1094
vidioc_try_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1095 int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
1096 struct v4l2_format *f)
1097 {
1098 struct vivid_dev *dev = video_drvdata(file);
1099 const struct v4l2_rect *compose = &dev->compose_cap;
1100 struct v4l2_window *win = &f->fmt.win;
1101 int i, j;
1102
1103 if (dev->multiplanar)
1104 return -ENOTTY;
1105
1106 win->w.left = clamp_t(int, win->w.left,
1107 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1108 win->w.top = clamp_t(int, win->w.top,
1109 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1110 win->w.width = compose->width;
1111 win->w.height = compose->height;
1112 if (win->field != V4L2_FIELD_BOTTOM && win->field != V4L2_FIELD_TOP)
1113 win->field = V4L2_FIELD_ANY;
1114 win->chromakey = 0;
1115 win->global_alpha = 0;
1116 if (win->clipcount && !win->clips)
1117 win->clipcount = 0;
1118 if (win->clipcount > MAX_CLIPS)
1119 win->clipcount = MAX_CLIPS;
1120 if (win->clipcount) {
1121 if (copy_from_user(dev->try_clips_cap, win->clips,
1122 win->clipcount * sizeof(dev->clips_cap[0])))
1123 return -EFAULT;
1124 for (i = 0; i < win->clipcount; i++) {
1125 struct v4l2_rect *r = &dev->try_clips_cap[i].c;
1126
1127 r->top = clamp_t(s32, r->top, 0, dev->fb_cap.fmt.height - 1);
1128 r->height = clamp_t(s32, r->height, 1, dev->fb_cap.fmt.height - r->top);
1129 r->left = clamp_t(u32, r->left, 0, dev->fb_cap.fmt.width - 1);
1130 r->width = clamp_t(u32, r->width, 1, dev->fb_cap.fmt.width - r->left);
1131 }
1132 /*
1133 * Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
1134 * number and it's typically a one-time deal.
1135 */
1136 for (i = 0; i < win->clipcount - 1; i++) {
1137 struct v4l2_rect *r1 = &dev->try_clips_cap[i].c;
1138
1139 for (j = i + 1; j < win->clipcount; j++) {
1140 struct v4l2_rect *r2 = &dev->try_clips_cap[j].c;
1141
1142 if (v4l2_rect_overlap(r1, r2))
1143 return -EINVAL;
1144 }
1145 }
1146 if (copy_to_user(win->clips, dev->try_clips_cap,
1147 win->clipcount * sizeof(dev->clips_cap[0])))
1148 return -EFAULT;
1149 }
1150 return 0;
1151 }
1152
vidioc_s_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1153 int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
1154 struct v4l2_format *f)
1155 {
1156 struct vivid_dev *dev = video_drvdata(file);
1157 const struct v4l2_rect *compose = &dev->compose_cap;
1158 struct v4l2_window *win = &f->fmt.win;
1159 int ret = vidioc_try_fmt_vid_overlay(file, priv, f);
1160 unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
1161 unsigned clips_size = win->clipcount * sizeof(dev->clips_cap[0]);
1162 void *new_bitmap = NULL;
1163
1164 if (ret)
1165 return ret;
1166
1167 if (win->bitmap) {
1168 new_bitmap = vzalloc(bitmap_size);
1169
1170 if (new_bitmap == NULL)
1171 return -ENOMEM;
1172 if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
1173 vfree(new_bitmap);
1174 return -EFAULT;
1175 }
1176 }
1177
1178 dev->overlay_cap_top = win->w.top;
1179 dev->overlay_cap_left = win->w.left;
1180 dev->overlay_cap_field = win->field;
1181 vfree(dev->bitmap_cap);
1182 dev->bitmap_cap = new_bitmap;
1183 dev->clipcount_cap = win->clipcount;
1184 if (dev->clipcount_cap)
1185 memcpy(dev->clips_cap, dev->try_clips_cap, clips_size);
1186 return 0;
1187 }
1188
vivid_vid_cap_overlay(struct file * file,void * fh,unsigned i)1189 int vivid_vid_cap_overlay(struct file *file, void *fh, unsigned i)
1190 {
1191 struct vivid_dev *dev = video_drvdata(file);
1192
1193 if (dev->multiplanar)
1194 return -ENOTTY;
1195
1196 if (i && dev->fb_vbase_cap == NULL)
1197 return -EINVAL;
1198
1199 if (i && dev->fb_cap.fmt.pixelformat != dev->fmt_cap->fourcc) {
1200 dprintk(dev, 1, "mismatch between overlay and video capture pixelformats\n");
1201 return -EINVAL;
1202 }
1203
1204 if (dev->overlay_cap_owner && dev->overlay_cap_owner != fh)
1205 return -EBUSY;
1206 dev->overlay_cap_owner = i ? fh : NULL;
1207 return 0;
1208 }
1209
vivid_vid_cap_g_fbuf(struct file * file,void * fh,struct v4l2_framebuffer * a)1210 int vivid_vid_cap_g_fbuf(struct file *file, void *fh,
1211 struct v4l2_framebuffer *a)
1212 {
1213 struct vivid_dev *dev = video_drvdata(file);
1214
1215 if (dev->multiplanar)
1216 return -ENOTTY;
1217
1218 *a = dev->fb_cap;
1219 a->capability = V4L2_FBUF_CAP_BITMAP_CLIPPING |
1220 V4L2_FBUF_CAP_LIST_CLIPPING;
1221 a->flags = V4L2_FBUF_FLAG_PRIMARY;
1222 a->fmt.field = V4L2_FIELD_NONE;
1223 a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1224 a->fmt.priv = 0;
1225 return 0;
1226 }
1227
vivid_vid_cap_s_fbuf(struct file * file,void * fh,const struct v4l2_framebuffer * a)1228 int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
1229 const struct v4l2_framebuffer *a)
1230 {
1231 struct vivid_dev *dev = video_drvdata(file);
1232 const struct vivid_fmt *fmt;
1233
1234 if (dev->multiplanar)
1235 return -ENOTTY;
1236
1237 if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1238 return -EPERM;
1239
1240 if (dev->overlay_cap_owner)
1241 return -EBUSY;
1242
1243 if (a->base == NULL) {
1244 dev->fb_cap.base = NULL;
1245 dev->fb_vbase_cap = NULL;
1246 return 0;
1247 }
1248
1249 if (a->fmt.width < 48 || a->fmt.height < 32)
1250 return -EINVAL;
1251 fmt = vivid_get_format(dev, a->fmt.pixelformat);
1252 if (!fmt || !fmt->can_do_overlay)
1253 return -EINVAL;
1254 if (a->fmt.bytesperline < (a->fmt.width * fmt->bit_depth[0]) / 8)
1255 return -EINVAL;
1256 if (a->fmt.height * a->fmt.bytesperline < a->fmt.sizeimage)
1257 return -EINVAL;
1258
1259 dev->fb_vbase_cap = phys_to_virt((unsigned long)a->base);
1260 dev->fb_cap = *a;
1261 dev->overlay_cap_left = clamp_t(int, dev->overlay_cap_left,
1262 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1263 dev->overlay_cap_top = clamp_t(int, dev->overlay_cap_top,
1264 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1265 return 0;
1266 }
1267
1268 static const struct v4l2_audio vivid_audio_inputs[] = {
1269 { 0, "TV", V4L2_AUDCAP_STEREO },
1270 { 1, "Line-In", V4L2_AUDCAP_STEREO },
1271 };
1272
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * inp)1273 int vidioc_enum_input(struct file *file, void *priv,
1274 struct v4l2_input *inp)
1275 {
1276 struct vivid_dev *dev = video_drvdata(file);
1277
1278 if (inp->index >= dev->num_inputs)
1279 return -EINVAL;
1280
1281 inp->type = V4L2_INPUT_TYPE_CAMERA;
1282 switch (dev->input_type[inp->index]) {
1283 case WEBCAM:
1284 snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1285 dev->input_name_counter[inp->index]);
1286 inp->capabilities = 0;
1287 break;
1288 case TV:
1289 snprintf(inp->name, sizeof(inp->name), "TV %u",
1290 dev->input_name_counter[inp->index]);
1291 inp->type = V4L2_INPUT_TYPE_TUNER;
1292 inp->std = V4L2_STD_ALL;
1293 if (dev->has_audio_inputs)
1294 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1295 inp->capabilities = V4L2_IN_CAP_STD;
1296 break;
1297 case SVID:
1298 snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1299 dev->input_name_counter[inp->index]);
1300 inp->std = V4L2_STD_ALL;
1301 if (dev->has_audio_inputs)
1302 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1303 inp->capabilities = V4L2_IN_CAP_STD;
1304 break;
1305 case HDMI:
1306 snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1307 dev->input_name_counter[inp->index]);
1308 inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1309 if (dev->edid_blocks == 0 ||
1310 dev->dv_timings_signal_mode[dev->input] == NO_SIGNAL)
1311 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1312 else if (dev->dv_timings_signal_mode[dev->input] == NO_LOCK ||
1313 dev->dv_timings_signal_mode[dev->input] == OUT_OF_RANGE)
1314 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1315 break;
1316 }
1317 if (dev->sensor_hflip)
1318 inp->status |= V4L2_IN_ST_HFLIP;
1319 if (dev->sensor_vflip)
1320 inp->status |= V4L2_IN_ST_VFLIP;
1321 if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1322 if (dev->std_signal_mode[dev->input] == NO_SIGNAL) {
1323 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1324 } else if (dev->std_signal_mode[dev->input] == NO_LOCK) {
1325 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1326 } else if (vivid_is_tv_cap(dev)) {
1327 switch (tpg_g_quality(&dev->tpg)) {
1328 case TPG_QUAL_GRAY:
1329 inp->status |= V4L2_IN_ST_COLOR_KILL;
1330 break;
1331 case TPG_QUAL_NOISE:
1332 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1333 break;
1334 default:
1335 break;
1336 }
1337 }
1338 }
1339 return 0;
1340 }
1341
vidioc_g_input(struct file * file,void * priv,unsigned * i)1342 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1343 {
1344 struct vivid_dev *dev = video_drvdata(file);
1345
1346 *i = dev->input;
1347 return 0;
1348 }
1349
vidioc_s_input(struct file * file,void * priv,unsigned i)1350 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1351 {
1352 struct vivid_dev *dev = video_drvdata(file);
1353 struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
1354 unsigned brightness;
1355
1356 if (i >= dev->num_inputs)
1357 return -EINVAL;
1358
1359 if (i == dev->input)
1360 return 0;
1361
1362 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1363 return -EBUSY;
1364
1365 dev->input = i;
1366 dev->vid_cap_dev.tvnorms = 0;
1367 if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1368 dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1369 dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1370 }
1371 dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1372 vivid_update_format_cap(dev, false);
1373
1374 if (dev->colorspace) {
1375 switch (dev->input_type[i]) {
1376 case WEBCAM:
1377 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1378 break;
1379 case TV:
1380 case SVID:
1381 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1382 break;
1383 case HDMI:
1384 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1385 if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1386 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1387 else
1388 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1389 } else {
1390 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1391 }
1392 break;
1393 }
1394 }
1395
1396 /*
1397 * Modify the brightness range depending on the input.
1398 * This makes it easy to use vivid to test if applications can
1399 * handle control range modifications and is also how this is
1400 * typically used in practice as different inputs may be hooked
1401 * up to different receivers with different control ranges.
1402 */
1403 brightness = 128 * i + dev->input_brightness[i];
1404 v4l2_ctrl_modify_range(dev->brightness,
1405 128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1406 v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1407
1408 /* Restore per-input states. */
1409 v4l2_ctrl_activate(dev->ctrl_dv_timings_signal_mode,
1410 vivid_is_hdmi_cap(dev));
1411 v4l2_ctrl_activate(dev->ctrl_dv_timings, vivid_is_hdmi_cap(dev) &&
1412 dev->dv_timings_signal_mode[dev->input] ==
1413 SELECTED_DV_TIMINGS);
1414 v4l2_ctrl_activate(dev->ctrl_std_signal_mode, vivid_is_sdtv_cap(dev));
1415 v4l2_ctrl_activate(dev->ctrl_standard, vivid_is_sdtv_cap(dev) &&
1416 dev->std_signal_mode[dev->input]);
1417
1418 if (vivid_is_hdmi_cap(dev)) {
1419 v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings_signal_mode,
1420 dev->dv_timings_signal_mode[dev->input]);
1421 v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings,
1422 dev->query_dv_timings[dev->input]);
1423 } else if (vivid_is_sdtv_cap(dev)) {
1424 v4l2_ctrl_s_ctrl(dev->ctrl_std_signal_mode,
1425 dev->std_signal_mode[dev->input]);
1426 v4l2_ctrl_s_ctrl(dev->ctrl_standard,
1427 dev->std_signal_mode[dev->input]);
1428 }
1429
1430 return 0;
1431 }
1432
vidioc_enumaudio(struct file * file,void * fh,struct v4l2_audio * vin)1433 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1434 {
1435 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1436 return -EINVAL;
1437 *vin = vivid_audio_inputs[vin->index];
1438 return 0;
1439 }
1440
vidioc_g_audio(struct file * file,void * fh,struct v4l2_audio * vin)1441 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1442 {
1443 struct vivid_dev *dev = video_drvdata(file);
1444
1445 if (!vivid_is_sdtv_cap(dev))
1446 return -EINVAL;
1447 *vin = vivid_audio_inputs[dev->tv_audio_input];
1448 return 0;
1449 }
1450
vidioc_s_audio(struct file * file,void * fh,const struct v4l2_audio * vin)1451 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1452 {
1453 struct vivid_dev *dev = video_drvdata(file);
1454
1455 if (!vivid_is_sdtv_cap(dev))
1456 return -EINVAL;
1457 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1458 return -EINVAL;
1459 dev->tv_audio_input = vin->index;
1460 return 0;
1461 }
1462
vivid_video_g_frequency(struct file * file,void * fh,struct v4l2_frequency * vf)1463 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1464 {
1465 struct vivid_dev *dev = video_drvdata(file);
1466
1467 if (vf->tuner != 0)
1468 return -EINVAL;
1469 vf->frequency = dev->tv_freq;
1470 return 0;
1471 }
1472
vivid_video_s_frequency(struct file * file,void * fh,const struct v4l2_frequency * vf)1473 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1474 {
1475 struct vivid_dev *dev = video_drvdata(file);
1476
1477 if (vf->tuner != 0)
1478 return -EINVAL;
1479 dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1480 if (vivid_is_tv_cap(dev))
1481 vivid_update_quality(dev);
1482 return 0;
1483 }
1484
vivid_video_s_tuner(struct file * file,void * fh,const struct v4l2_tuner * vt)1485 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1486 {
1487 struct vivid_dev *dev = video_drvdata(file);
1488
1489 if (vt->index != 0)
1490 return -EINVAL;
1491 if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1492 return -EINVAL;
1493 dev->tv_audmode = vt->audmode;
1494 return 0;
1495 }
1496
vivid_video_g_tuner(struct file * file,void * fh,struct v4l2_tuner * vt)1497 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1498 {
1499 struct vivid_dev *dev = video_drvdata(file);
1500 enum tpg_quality qual;
1501
1502 if (vt->index != 0)
1503 return -EINVAL;
1504
1505 vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1506 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1507 vt->audmode = dev->tv_audmode;
1508 vt->rangelow = MIN_TV_FREQ;
1509 vt->rangehigh = MAX_TV_FREQ;
1510 qual = vivid_get_quality(dev, &vt->afc);
1511 if (qual == TPG_QUAL_COLOR)
1512 vt->signal = 0xffff;
1513 else if (qual == TPG_QUAL_GRAY)
1514 vt->signal = 0x8000;
1515 else
1516 vt->signal = 0;
1517 if (qual == TPG_QUAL_NOISE) {
1518 vt->rxsubchans = 0;
1519 } else if (qual == TPG_QUAL_GRAY) {
1520 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1521 } else {
1522 unsigned int channel_nr = dev->tv_freq / (6 * 16);
1523 unsigned int options =
1524 (dev->std_cap[dev->input] & V4L2_STD_NTSC_M) ? 4 : 3;
1525
1526 switch (channel_nr % options) {
1527 case 0:
1528 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1529 break;
1530 case 1:
1531 vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1532 break;
1533 case 2:
1534 if (dev->std_cap[dev->input] & V4L2_STD_NTSC_M)
1535 vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1536 else
1537 vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1538 break;
1539 case 3:
1540 vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1541 break;
1542 }
1543 }
1544 strscpy(vt->name, "TV Tuner", sizeof(vt->name));
1545 return 0;
1546 }
1547
1548 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1549 const v4l2_std_id vivid_standard[] = {
1550 V4L2_STD_NTSC_M,
1551 V4L2_STD_NTSC_M_JP,
1552 V4L2_STD_NTSC_M_KR,
1553 V4L2_STD_NTSC_443,
1554 V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1555 V4L2_STD_PAL_I,
1556 V4L2_STD_PAL_DK,
1557 V4L2_STD_PAL_M,
1558 V4L2_STD_PAL_N,
1559 V4L2_STD_PAL_Nc,
1560 V4L2_STD_PAL_60,
1561 V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1562 V4L2_STD_SECAM_DK,
1563 V4L2_STD_SECAM_L,
1564 V4L2_STD_SECAM_LC,
1565 V4L2_STD_UNKNOWN
1566 };
1567
1568 /* Must remain in sync with the vivid_standard array */
1569 const char * const vivid_ctrl_standard_strings[] = {
1570 "NTSC-M",
1571 "NTSC-M-JP",
1572 "NTSC-M-KR",
1573 "NTSC-443",
1574 "PAL-BGH",
1575 "PAL-I",
1576 "PAL-DK",
1577 "PAL-M",
1578 "PAL-N",
1579 "PAL-Nc",
1580 "PAL-60",
1581 "SECAM-BGH",
1582 "SECAM-DK",
1583 "SECAM-L",
1584 "SECAM-Lc",
1585 NULL,
1586 };
1587
vidioc_querystd(struct file * file,void * priv,v4l2_std_id * id)1588 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1589 {
1590 struct vivid_dev *dev = video_drvdata(file);
1591 unsigned int last = dev->query_std_last[dev->input];
1592
1593 if (!vivid_is_sdtv_cap(dev))
1594 return -ENODATA;
1595 if (dev->std_signal_mode[dev->input] == NO_SIGNAL ||
1596 dev->std_signal_mode[dev->input] == NO_LOCK) {
1597 *id = V4L2_STD_UNKNOWN;
1598 return 0;
1599 }
1600 if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1601 *id = V4L2_STD_UNKNOWN;
1602 } else if (dev->std_signal_mode[dev->input] == CURRENT_STD) {
1603 *id = dev->std_cap[dev->input];
1604 } else if (dev->std_signal_mode[dev->input] == SELECTED_STD) {
1605 *id = dev->query_std[dev->input];
1606 } else {
1607 *id = vivid_standard[last];
1608 dev->query_std_last[dev->input] =
1609 (last + 1) % ARRAY_SIZE(vivid_standard);
1610 }
1611
1612 return 0;
1613 }
1614
vivid_vid_cap_s_std(struct file * file,void * priv,v4l2_std_id id)1615 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1616 {
1617 struct vivid_dev *dev = video_drvdata(file);
1618
1619 if (!vivid_is_sdtv_cap(dev))
1620 return -ENODATA;
1621 if (dev->std_cap[dev->input] == id)
1622 return 0;
1623 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1624 return -EBUSY;
1625 dev->std_cap[dev->input] = id;
1626 vivid_update_format_cap(dev, false);
1627 return 0;
1628 }
1629
find_aspect_ratio(u32 width,u32 height,u32 * num,u32 * denom)1630 static void find_aspect_ratio(u32 width, u32 height,
1631 u32 *num, u32 *denom)
1632 {
1633 if (!(height % 3) && ((height * 4 / 3) == width)) {
1634 *num = 4;
1635 *denom = 3;
1636 } else if (!(height % 9) && ((height * 16 / 9) == width)) {
1637 *num = 16;
1638 *denom = 9;
1639 } else if (!(height % 10) && ((height * 16 / 10) == width)) {
1640 *num = 16;
1641 *denom = 10;
1642 } else if (!(height % 4) && ((height * 5 / 4) == width)) {
1643 *num = 5;
1644 *denom = 4;
1645 } else if (!(height % 9) && ((height * 15 / 9) == width)) {
1646 *num = 15;
1647 *denom = 9;
1648 } else { /* default to 16:9 */
1649 *num = 16;
1650 *denom = 9;
1651 }
1652 }
1653
valid_cvt_gtf_timings(struct v4l2_dv_timings * timings)1654 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1655 {
1656 struct v4l2_bt_timings *bt = &timings->bt;
1657 u32 total_h_pixel;
1658 u32 total_v_lines;
1659 u32 h_freq;
1660
1661 if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1662 NULL, NULL))
1663 return false;
1664
1665 total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1666 total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1667
1668 h_freq = (u32)bt->pixelclock / total_h_pixel;
1669
1670 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1671 if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1672 bt->polarities, bt->interlaced, timings))
1673 return true;
1674 }
1675
1676 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1677 struct v4l2_fract aspect_ratio;
1678
1679 find_aspect_ratio(bt->width, bt->height,
1680 &aspect_ratio.numerator,
1681 &aspect_ratio.denominator);
1682 if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1683 bt->polarities, bt->interlaced,
1684 aspect_ratio, timings))
1685 return true;
1686 }
1687 return false;
1688 }
1689
vivid_vid_cap_s_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1690 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1691 struct v4l2_dv_timings *timings)
1692 {
1693 struct vivid_dev *dev = video_drvdata(file);
1694
1695 if (!vivid_is_hdmi_cap(dev))
1696 return -ENODATA;
1697 if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1698 0, NULL, NULL) &&
1699 !valid_cvt_gtf_timings(timings))
1700 return -EINVAL;
1701
1702 if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap[dev->input],
1703 0, false))
1704 return 0;
1705 if (vb2_is_busy(&dev->vb_vid_cap_q))
1706 return -EBUSY;
1707
1708 dev->dv_timings_cap[dev->input] = *timings;
1709 vivid_update_format_cap(dev, false);
1710 return 0;
1711 }
1712
vidioc_query_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1713 int vidioc_query_dv_timings(struct file *file, void *_fh,
1714 struct v4l2_dv_timings *timings)
1715 {
1716 struct vivid_dev *dev = video_drvdata(file);
1717 unsigned int input = dev->input;
1718 unsigned int last = dev->query_dv_timings_last[input];
1719
1720 if (!vivid_is_hdmi_cap(dev))
1721 return -ENODATA;
1722 if (dev->dv_timings_signal_mode[input] == NO_SIGNAL ||
1723 dev->edid_blocks == 0)
1724 return -ENOLINK;
1725 if (dev->dv_timings_signal_mode[input] == NO_LOCK)
1726 return -ENOLCK;
1727 if (dev->dv_timings_signal_mode[input] == OUT_OF_RANGE) {
1728 timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1729 return -ERANGE;
1730 }
1731 if (dev->dv_timings_signal_mode[input] == CURRENT_DV_TIMINGS) {
1732 *timings = dev->dv_timings_cap[input];
1733 } else if (dev->dv_timings_signal_mode[input] ==
1734 SELECTED_DV_TIMINGS) {
1735 *timings =
1736 v4l2_dv_timings_presets[dev->query_dv_timings[input]];
1737 } else {
1738 *timings =
1739 v4l2_dv_timings_presets[last];
1740 dev->query_dv_timings_last[input] =
1741 (last + 1) % dev->query_dv_timings_size;
1742 }
1743 return 0;
1744 }
1745
vidioc_s_edid(struct file * file,void * _fh,struct v4l2_edid * edid)1746 int vidioc_s_edid(struct file *file, void *_fh,
1747 struct v4l2_edid *edid)
1748 {
1749 struct vivid_dev *dev = video_drvdata(file);
1750 u16 phys_addr;
1751 u32 display_present = 0;
1752 unsigned int i, j;
1753 int ret;
1754
1755 memset(edid->reserved, 0, sizeof(edid->reserved));
1756 if (edid->pad >= dev->num_inputs)
1757 return -EINVAL;
1758 if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1759 return -EINVAL;
1760 if (edid->blocks == 0) {
1761 dev->edid_blocks = 0;
1762 v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, 0);
1763 v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, 0);
1764 phys_addr = CEC_PHYS_ADDR_INVALID;
1765 goto set_phys_addr;
1766 }
1767 if (edid->blocks > dev->edid_max_blocks) {
1768 edid->blocks = dev->edid_max_blocks;
1769 return -E2BIG;
1770 }
1771 phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1772 ret = v4l2_phys_addr_validate(phys_addr, &phys_addr, NULL);
1773 if (ret)
1774 return ret;
1775
1776 if (vb2_is_busy(&dev->vb_vid_cap_q))
1777 return -EBUSY;
1778
1779 dev->edid_blocks = edid->blocks;
1780 memcpy(dev->edid, edid->edid, edid->blocks * 128);
1781
1782 for (i = 0, j = 0; i < dev->num_outputs; i++)
1783 if (dev->output_type[i] == HDMI)
1784 display_present |=
1785 dev->display_present[i] << j++;
1786
1787 v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, display_present);
1788 v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, display_present);
1789
1790 set_phys_addr:
1791 /* TODO: a proper hotplug detect cycle should be emulated here */
1792 cec_s_phys_addr(dev->cec_rx_adap, phys_addr, false);
1793
1794 for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++)
1795 cec_s_phys_addr(dev->cec_tx_adap[i],
1796 dev->display_present[i] ?
1797 v4l2_phys_addr_for_input(phys_addr, i + 1) :
1798 CEC_PHYS_ADDR_INVALID,
1799 false);
1800 return 0;
1801 }
1802
vidioc_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)1803 int vidioc_enum_framesizes(struct file *file, void *fh,
1804 struct v4l2_frmsizeenum *fsize)
1805 {
1806 struct vivid_dev *dev = video_drvdata(file);
1807
1808 if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1809 return -EINVAL;
1810 if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1811 return -EINVAL;
1812 if (vivid_is_webcam(dev)) {
1813 if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1814 return -EINVAL;
1815 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1816 fsize->discrete = webcam_sizes[fsize->index];
1817 return 0;
1818 }
1819 if (fsize->index)
1820 return -EINVAL;
1821 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1822 fsize->stepwise.min_width = MIN_WIDTH;
1823 fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1824 fsize->stepwise.step_width = 2;
1825 fsize->stepwise.min_height = MIN_HEIGHT;
1826 fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1827 fsize->stepwise.step_height = 2;
1828 return 0;
1829 }
1830
1831 /* timeperframe is arbitrary and continuous */
vidioc_enum_frameintervals(struct file * file,void * priv,struct v4l2_frmivalenum * fival)1832 int vidioc_enum_frameintervals(struct file *file, void *priv,
1833 struct v4l2_frmivalenum *fival)
1834 {
1835 struct vivid_dev *dev = video_drvdata(file);
1836 const struct vivid_fmt *fmt;
1837 int i;
1838
1839 fmt = vivid_get_format(dev, fival->pixel_format);
1840 if (!fmt)
1841 return -EINVAL;
1842
1843 if (!vivid_is_webcam(dev)) {
1844 if (fival->index)
1845 return -EINVAL;
1846 if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1847 return -EINVAL;
1848 if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1849 return -EINVAL;
1850 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1851 fival->discrete = dev->timeperframe_vid_cap;
1852 return 0;
1853 }
1854
1855 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1856 if (fival->width == webcam_sizes[i].width &&
1857 fival->height == webcam_sizes[i].height)
1858 break;
1859 if (i == ARRAY_SIZE(webcam_sizes))
1860 return -EINVAL;
1861 if (fival->index >= 2 * (VIVID_WEBCAM_SIZES - i))
1862 return -EINVAL;
1863 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1864 fival->discrete = webcam_intervals[fival->index];
1865 return 0;
1866 }
1867
vivid_vid_cap_g_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1868 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1869 struct v4l2_streamparm *parm)
1870 {
1871 struct vivid_dev *dev = video_drvdata(file);
1872
1873 if (parm->type != (dev->multiplanar ?
1874 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1875 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1876 return -EINVAL;
1877
1878 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1879 parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1880 parm->parm.capture.readbuffers = 1;
1881 return 0;
1882 }
1883
vivid_vid_cap_s_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1884 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1885 struct v4l2_streamparm *parm)
1886 {
1887 struct vivid_dev *dev = video_drvdata(file);
1888 unsigned ival_sz = 2 * (VIVID_WEBCAM_SIZES - dev->webcam_size_idx);
1889 struct v4l2_fract tpf;
1890 unsigned i;
1891
1892 if (parm->type != (dev->multiplanar ?
1893 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1894 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1895 return -EINVAL;
1896 if (!vivid_is_webcam(dev))
1897 return vivid_vid_cap_g_parm(file, priv, parm);
1898
1899 tpf = parm->parm.capture.timeperframe;
1900
1901 if (tpf.denominator == 0)
1902 tpf = webcam_intervals[ival_sz - 1];
1903 for (i = 0; i < ival_sz; i++)
1904 if (V4L2_FRACT_COMPARE(tpf, >=, webcam_intervals[i]))
1905 break;
1906 if (i == ival_sz)
1907 i = ival_sz - 1;
1908 dev->webcam_ival_idx = i;
1909 tpf = webcam_intervals[dev->webcam_ival_idx];
1910
1911 /* resync the thread's timings */
1912 dev->cap_seq_resync = true;
1913 dev->timeperframe_vid_cap = tpf;
1914 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1915 parm->parm.capture.timeperframe = tpf;
1916 parm->parm.capture.readbuffers = 1;
1917 return 0;
1918 }
1919
