1 /*
2 * vivid-vid-cap.c - video capture support functions.
3 *
4 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
5 *
6 * This program is free software; you may redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
11 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
12 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
13 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
14 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
15 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
16 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17 * SOFTWARE.
18 */
19
20 #include <linux/errno.h>
21 #include <linux/kernel.h>
22 #include <linux/sched.h>
23 #include <linux/vmalloc.h>
24 #include <linux/videodev2.h>
25 #include <linux/v4l2-dv-timings.h>
26 #include <media/v4l2-common.h>
27 #include <media/v4l2-event.h>
28 #include <media/v4l2-dv-timings.h>
29 #include <media/v4l2-rect.h>
30
31 #include "vivid-core.h"
32 #include "vivid-vid-common.h"
33 #include "vivid-kthread-cap.h"
34 #include "vivid-vid-cap.h"
35
36 /* timeperframe: min/max and default */
37 static const struct v4l2_fract
38 tpf_min = {.numerator = 1, .denominator = FPS_MAX},
39 tpf_max = {.numerator = FPS_MAX, .denominator = 1};
40
41 static const struct vivid_fmt formats_ovl[] = {
42 {
43 .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
44 .vdownsampling = { 1 },
45 .bit_depth = { 16 },
46 .planes = 1,
47 .buffers = 1,
48 },
49 {
50 .fourcc = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
51 .vdownsampling = { 1 },
52 .bit_depth = { 16 },
53 .planes = 1,
54 .buffers = 1,
55 },
56 {
57 .fourcc = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
58 .vdownsampling = { 1 },
59 .bit_depth = { 16 },
60 .planes = 1,
61 .buffers = 1,
62 },
63 };
64
65 /* The number of discrete webcam framesizes */
66 #define VIVID_WEBCAM_SIZES 5
67 /* The number of discrete webcam frameintervals */
68 #define VIVID_WEBCAM_IVALS (VIVID_WEBCAM_SIZES * 2)
69
70 /* Sizes must be in increasing order */
71 static const struct v4l2_frmsize_discrete webcam_sizes[VIVID_WEBCAM_SIZES] = {
72 { 320, 180 },
73 { 640, 360 },
74 { 1280, 720 },
75 { 1920, 1080 },
76 { 3840, 2160 },
77 };
78
79 /*
80 * Intervals must be in increasing order and there must be twice as many
81 * elements in this array as there are in webcam_sizes.
82 */
83 static const struct v4l2_fract webcam_intervals[VIVID_WEBCAM_IVALS] = {
84 { 1, 1 },
85 { 1, 2 },
86 { 1, 4 },
87 { 1, 5 },
88 { 1, 10 },
89 { 1, 15 },
90 { 1, 25 },
91 { 1, 30 },
92 { 1, 50 },
93 { 1, 60 },
94 };
95
96 static const struct v4l2_discrete_probe webcam_probe = {
97 webcam_sizes,
98 VIVID_WEBCAM_SIZES
99 };
100
vid_cap_queue_setup(struct vb2_queue * vq,unsigned * nbuffers,unsigned * nplanes,unsigned sizes[],struct device * alloc_devs[])101 static int vid_cap_queue_setup(struct vb2_queue *vq,
102 unsigned *nbuffers, unsigned *nplanes,
103 unsigned sizes[], struct device *alloc_devs[])
104 {
105 struct vivid_dev *dev = vb2_get_drv_priv(vq);
106 unsigned buffers = tpg_g_buffers(&dev->tpg);
107 unsigned h = dev->fmt_cap_rect.height;
108 unsigned p;
109
110 if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
111 /*
112 * You cannot use read() with FIELD_ALTERNATE since the field
113 * information (TOP/BOTTOM) cannot be passed back to the user.
114 */
115 if (vb2_fileio_is_active(vq))
116 return -EINVAL;
117 }
118
119 if (dev->queue_setup_error) {
120 /*
121 * Error injection: test what happens if queue_setup() returns
122 * an error.
123 */
124 dev->queue_setup_error = false;
125 return -EINVAL;
126 }
127 if (*nplanes) {
128 /*
129 * Check if the number of requested planes match
130 * the number of buffers in the current format. You can't mix that.
131 */
132 if (*nplanes != buffers)
133 return -EINVAL;
134 for (p = 0; p < buffers; p++) {
135 if (sizes[p] < tpg_g_line_width(&dev->tpg, p) * h +
136 dev->fmt_cap->data_offset[p])
137 return -EINVAL;
138 }
139 } else {
140 for (p = 0; p < buffers; p++)
141 sizes[p] = tpg_g_line_width(&dev->tpg, p) * h +
142 dev->fmt_cap->data_offset[p];
143 }
144
145 if (vq->num_buffers + *nbuffers < 2)
146 *nbuffers = 2 - vq->num_buffers;
147
148 *nplanes = buffers;
149
150 dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
151 for (p = 0; p < buffers; p++)
152 dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
153
154 return 0;
155 }
156
vid_cap_buf_prepare(struct vb2_buffer * vb)157 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
158 {
159 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
160 unsigned long size;
161 unsigned buffers = tpg_g_buffers(&dev->tpg);
162 unsigned p;
163
164 dprintk(dev, 1, "%s\n", __func__);
165
166 if (WARN_ON(NULL == dev->fmt_cap))
167 return -EINVAL;
168
169 if (dev->buf_prepare_error) {
170 /*
171 * Error injection: test what happens if buf_prepare() returns
172 * an error.
173 */
174 dev->buf_prepare_error = false;
175 return -EINVAL;
176 }
177 for (p = 0; p < buffers; p++) {
178 size = tpg_g_line_width(&dev->tpg, p) * dev->fmt_cap_rect.height +
179 dev->fmt_cap->data_offset[p];
180
181 if (vb2_plane_size(vb, p) < size) {
182 dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
183 __func__, p, vb2_plane_size(vb, p), size);
184 return -EINVAL;
185 }
186
187 vb2_set_plane_payload(vb, p, size);
188 vb->planes[p].data_offset = dev->fmt_cap->data_offset[p];
189 }
190
191 return 0;
192 }
193
vid_cap_buf_finish(struct vb2_buffer * vb)194 static void vid_cap_buf_finish(struct vb2_buffer *vb)
195 {
196 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
197 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
198 struct v4l2_timecode *tc = &vbuf->timecode;
199 unsigned fps = 25;
200 unsigned seq = vbuf->sequence;
201
202 if (!vivid_is_sdtv_cap(dev))
203 return;
204
205 /*
206 * Set the timecode. Rarely used, so it is interesting to
207 * test this.
208 */
209 vbuf->flags |= V4L2_BUF_FLAG_TIMECODE;
210 if (dev->std_cap & V4L2_STD_525_60)
211 fps = 30;
212 tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
213 tc->flags = 0;
214 tc->frames = seq % fps;
215 tc->seconds = (seq / fps) % 60;
216 tc->minutes = (seq / (60 * fps)) % 60;
217 tc->hours = (seq / (60 * 60 * fps)) % 24;
218 }
219
vid_cap_buf_queue(struct vb2_buffer * vb)220 static void vid_cap_buf_queue(struct vb2_buffer *vb)
221 {
222 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
223 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
224 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
225
226 dprintk(dev, 1, "%s\n", __func__);
227
228 spin_lock(&dev->slock);
229 list_add_tail(&buf->list, &dev->vid_cap_active);
230 spin_unlock(&dev->slock);
231 }
232
vid_cap_start_streaming(struct vb2_queue * vq,unsigned count)233 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
234 {
235 struct vivid_dev *dev = vb2_get_drv_priv(vq);
236 unsigned i;
237 int err;
238
239 if (vb2_is_streaming(&dev->vb_vid_out_q))
240 dev->can_loop_video = vivid_vid_can_loop(dev);
241
242 dev->vid_cap_seq_count = 0;
243 dprintk(dev, 1, "%s\n", __func__);
244 for (i = 0; i < VIDEO_MAX_FRAME; i++)
245 dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
246 if (dev->start_streaming_error) {
247 dev->start_streaming_error = false;
248 err = -EINVAL;
249 } else {
250 err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
251 }
252 if (err) {
253 struct vivid_buffer *buf, *tmp;
254
255 list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
256 list_del(&buf->list);
257 vb2_buffer_done(&buf->vb.vb2_buf,
258 VB2_BUF_STATE_QUEUED);
259 }
260 }
261 return err;
262 }
263
264 /* abort streaming and wait for last buffer */
vid_cap_stop_streaming(struct vb2_queue * vq)265 static void vid_cap_stop_streaming(struct vb2_queue *vq)
266 {
267 struct vivid_dev *dev = vb2_get_drv_priv(vq);
268
269 dprintk(dev, 1, "%s\n", __func__);
270 vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
271 dev->can_loop_video = false;
272 }
273
274 const struct vb2_ops vivid_vid_cap_qops = {
275 .queue_setup = vid_cap_queue_setup,
276 .buf_prepare = vid_cap_buf_prepare,
277 .buf_finish = vid_cap_buf_finish,
278 .buf_queue = vid_cap_buf_queue,
279 .start_streaming = vid_cap_start_streaming,
280 .stop_streaming = vid_cap_stop_streaming,
281 .wait_prepare = vb2_ops_wait_prepare,
282 .wait_finish = vb2_ops_wait_finish,
283 };
284
285 /*
286 * Determine the 'picture' quality based on the current TV frequency: either
287 * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
288 * signal or NOISE for no signal.
289 */
vivid_update_quality(struct vivid_dev * dev)290 void vivid_update_quality(struct vivid_dev *dev)
291 {
292 unsigned freq_modulus;
293
294 if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
295 /*
296 * The 'noise' will only be replaced by the actual video
297 * if the output video matches the input video settings.
298 */
299 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
300 return;
301 }
302 if (vivid_is_hdmi_cap(dev) && VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode)) {
303 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
304 return;
305 }
306 if (vivid_is_sdtv_cap(dev) && VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
307 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
308 return;
309 }
310 if (!vivid_is_tv_cap(dev)) {
311 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
312 return;
313 }
314
315 /*
316 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
317 * From +/- 0.25 MHz around the channel there is color, and from
318 * +/- 1 MHz there is grayscale (chroma is lost).
319 * Everywhere else it is just noise.
320 */
321 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
322 if (freq_modulus > 2 * 16) {
323 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
324 next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
325 return;
326 }
327 if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
328 tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
329 else
330 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
331 }
332
333 /*
334 * Get the current picture quality and the associated afc value.
335 */
vivid_get_quality(struct vivid_dev * dev,s32 * afc)336 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
337 {
338 unsigned freq_modulus;
339
340 if (afc)
341 *afc = 0;
342 if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
343 tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
344 return tpg_g_quality(&dev->tpg);
345
346 /*
347 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
348 * From +/- 0.25 MHz around the channel there is color, and from
349 * +/- 1 MHz there is grayscale (chroma is lost).
350 * Everywhere else it is just gray.
351 */
352 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
353 if (afc)
354 *afc = freq_modulus - 1 * 16;
355 return TPG_QUAL_GRAY;
356 }
357
vivid_get_video_aspect(const struct vivid_dev * dev)358 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
359 {
360 if (vivid_is_sdtv_cap(dev))
361 return dev->std_aspect_ratio;
362
363 if (vivid_is_hdmi_cap(dev))
364 return dev->dv_timings_aspect_ratio;
365
366 return TPG_VIDEO_ASPECT_IMAGE;
367 }
368
vivid_get_pixel_aspect(const struct vivid_dev * dev)369 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
370 {
371 if (vivid_is_sdtv_cap(dev))
372 return (dev->std_cap & V4L2_STD_525_60) ?
373 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
374
375 if (vivid_is_hdmi_cap(dev) &&
376 dev->src_rect.width == 720 && dev->src_rect.height <= 576)
377 return dev->src_rect.height == 480 ?
378 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
379
380 return TPG_PIXEL_ASPECT_SQUARE;
381 }
382
383 /*
384 * Called whenever the format has to be reset which can occur when
385 * changing inputs, standard, timings, etc.
386 */
vivid_update_format_cap(struct vivid_dev * dev,bool keep_controls)387 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
388 {
389 struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
390 unsigned size;
391 u64 pixelclock;
392
393 switch (dev->input_type[dev->input]) {
394 case WEBCAM:
395 default:
396 dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
397 dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
398 dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
399 dev->field_cap = V4L2_FIELD_NONE;
400 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
401 break;
402 case TV:
403 case SVID:
404 dev->field_cap = dev->tv_field_cap;
405 dev->src_rect.width = 720;
406 if (dev->std_cap & V4L2_STD_525_60) {
407 dev->src_rect.height = 480;
408 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
409 dev->service_set_cap = V4L2_SLICED_CAPTION_525;
410 } else {
411 dev->src_rect.height = 576;
412 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
413 dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
414 }
415 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
416 break;
417 case HDMI:
418 dev->src_rect.width = bt->width;
419 dev->src_rect.height = bt->height;
420 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
421 if (dev->reduced_fps && can_reduce_fps(bt)) {
422 pixelclock = div_u64(bt->pixelclock * 1000, 1001);
423 bt->flags |= V4L2_DV_FL_REDUCED_FPS;
424 } else {
425 pixelclock = bt->pixelclock;
426 bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
427 }
428 dev->timeperframe_vid_cap = (struct v4l2_fract) {
429 size / 100, (u32)pixelclock / 100
430 };
431 if (bt->interlaced)
432 dev->field_cap = V4L2_FIELD_ALTERNATE;
433 else
434 dev->field_cap = V4L2_FIELD_NONE;
435
436 /*
437 * We can be called from within s_ctrl, in that case we can't
438 * set/get controls. Luckily we don't need to in that case.
439 */
440 if (keep_controls || !dev->colorspace)
441 break;
442 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
443 if (bt->width == 720 && bt->height <= 576)
444 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
445 else
446 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
447 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
448 } else {
449 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
450 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
451 }
452 tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
453 break;
454 }
455 vfree(dev->bitmap_cap);
456 dev->bitmap_cap = NULL;
457 vivid_update_quality(dev);
458 tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
459 dev->crop_cap = dev->src_rect;
460 dev->crop_bounds_cap = dev->src_rect;
461 dev->compose_cap = dev->crop_cap;
462 if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
463 dev->compose_cap.height /= 2;
464 dev->fmt_cap_rect = dev->compose_cap;
465 tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
466 tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
467 tpg_update_mv_step(&dev->tpg);
468 }
469
470 /* Map the field to something that is valid for the current input */
vivid_field_cap(struct vivid_dev * dev,enum v4l2_field field)471 static enum v4l2_field vivid_field_cap(struct vivid_dev *dev, enum v4l2_field field)
472 {
473 if (vivid_is_sdtv_cap(dev)) {
474 switch (field) {
475 case V4L2_FIELD_INTERLACED_TB:
476 case V4L2_FIELD_INTERLACED_BT:
477 case V4L2_FIELD_SEQ_TB:
478 case V4L2_FIELD_SEQ_BT:
479 case V4L2_FIELD_TOP:
480 case V4L2_FIELD_BOTTOM:
481 case V4L2_FIELD_ALTERNATE:
482 return field;
483 case V4L2_FIELD_INTERLACED:
484 default:
485 return V4L2_FIELD_INTERLACED;
486 }
487 }
488 if (vivid_is_hdmi_cap(dev))
489 return dev->dv_timings_cap.bt.interlaced ? V4L2_FIELD_ALTERNATE :
490 V4L2_FIELD_NONE;
491 return V4L2_FIELD_NONE;
492 }
493
vivid_colorspace_cap(struct vivid_dev * dev)494 static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
495 {
496 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
497 return tpg_g_colorspace(&dev->tpg);
498 return dev->colorspace_out;
499 }
500
vivid_xfer_func_cap(struct vivid_dev * dev)501 static unsigned vivid_xfer_func_cap(struct vivid_dev *dev)
502 {
503 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
504 return tpg_g_xfer_func(&dev->tpg);
505 return dev->xfer_func_out;
506 }
507
vivid_ycbcr_enc_cap(struct vivid_dev * dev)508 static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
509 {
510 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
511 return tpg_g_ycbcr_enc(&dev->tpg);
512 return dev->ycbcr_enc_out;
513 }
514
vivid_hsv_enc_cap(struct vivid_dev * dev)515 static unsigned int vivid_hsv_enc_cap(struct vivid_dev *dev)
516 {
517 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
518 return tpg_g_hsv_enc(&dev->tpg);
519 return dev->hsv_enc_out;
520 }
521
vivid_quantization_cap(struct vivid_dev * dev)522 static unsigned vivid_quantization_cap(struct vivid_dev *dev)
523 {
524 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
525 return tpg_g_quantization(&dev->tpg);
526 return dev->quantization_out;
527 }
528
vivid_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)529 int vivid_g_fmt_vid_cap(struct file *file, void *priv,
530 struct v4l2_format *f)
531 {
532 struct vivid_dev *dev = video_drvdata(file);
533 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
534 unsigned p;
535
536 mp->width = dev->fmt_cap_rect.width;
537 mp->height = dev->fmt_cap_rect.height;
538 mp->field = dev->field_cap;
539 mp->pixelformat = dev->fmt_cap->fourcc;
540 mp->colorspace = vivid_colorspace_cap(dev);
541 mp->xfer_func = vivid_xfer_func_cap(dev);
542 if (dev->fmt_cap->color_enc == TGP_COLOR_ENC_HSV)
543 mp->hsv_enc = vivid_hsv_enc_cap(dev);
544 else
545 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
546 mp->quantization = vivid_quantization_cap(dev);
547 mp->num_planes = dev->fmt_cap->buffers;
548 for (p = 0; p < mp->num_planes; p++) {
549 mp->plane_fmt[p].bytesperline = tpg_g_bytesperline(&dev->tpg, p);
550 mp->plane_fmt[p].sizeimage =
551 tpg_g_line_width(&dev->tpg, p) * mp->height +
552 dev->fmt_cap->data_offset[p];
553 }
554 return 0;
555 }
556
vivid_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)557 int vivid_try_fmt_vid_cap(struct file *file, void *priv,
558 struct v4l2_format *f)
559 {
560 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
561 struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
562 struct vivid_dev *dev = video_drvdata(file);
563 const struct vivid_fmt *fmt;
564 unsigned bytesperline, max_bpl;
565 unsigned factor = 1;
566 unsigned w, h;
567 unsigned p;
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_format(&webcam_probe, 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 & 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_cropcap(struct file * file,void * priv,struct v4l2_cropcap * cap)1020 int vivid_vid_cap_cropcap(struct file *file, void *priv,
1021 struct v4l2_cropcap *cap)
1022 {
1023 struct vivid_dev *dev = video_drvdata(file);
1024
1025 if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1026 return -EINVAL;
1027
1028 switch (vivid_get_pixel_aspect(dev)) {
1029 case TPG_PIXEL_ASPECT_NTSC:
1030 cap->pixelaspect.numerator = 11;
1031 cap->pixelaspect.denominator = 10;
1032 break;
1033 case TPG_PIXEL_ASPECT_PAL:
1034 cap->pixelaspect.numerator = 54;
1035 cap->pixelaspect.denominator = 59;
1036 break;
1037 case TPG_PIXEL_ASPECT_SQUARE:
1038 cap->pixelaspect.numerator = 1;
1039 cap->pixelaspect.denominator = 1;
1040 break;
1041 }
1042 return 0;
1043 }
1044
vidioc_enum_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_fmtdesc * f)1045 int vidioc_enum_fmt_vid_overlay(struct file *file, void *priv,
1046 struct v4l2_fmtdesc *f)
1047 {
1048 struct vivid_dev *dev = video_drvdata(file);
1049 const struct vivid_fmt *fmt;
1050
1051 if (dev->multiplanar)
1052 return -ENOTTY;
1053
1054 if (f->index >= ARRAY_SIZE(formats_ovl))
1055 return -EINVAL;
1056
1057 fmt = &formats_ovl[f->index];
1058
1059 f->pixelformat = fmt->fourcc;
1060 return 0;
1061 }
1062
vidioc_g_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1063 int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
1064 struct v4l2_format *f)
1065 {
1066 struct vivid_dev *dev = video_drvdata(file);
1067 const struct v4l2_rect *compose = &dev->compose_cap;
1068 struct v4l2_window *win = &f->fmt.win;
1069 unsigned clipcount = win->clipcount;
1070
1071 if (dev->multiplanar)
1072 return -ENOTTY;
1073
1074 win->w.top = dev->overlay_cap_top;
1075 win->w.left = dev->overlay_cap_left;
1076 win->w.width = compose->width;
1077 win->w.height = compose->height;
1078 win->field = dev->overlay_cap_field;
1079 win->clipcount = dev->clipcount_cap;
1080 if (clipcount > dev->clipcount_cap)
1081 clipcount = dev->clipcount_cap;
1082 if (dev->bitmap_cap == NULL)
1083 win->bitmap = NULL;
1084 else if (win->bitmap) {
1085 if (copy_to_user(win->bitmap, dev->bitmap_cap,
1086 ((compose->width + 7) / 8) * compose->height))
1087 return -EFAULT;
1088 }
1089 if (clipcount && win->clips) {
1090 if (copy_to_user(win->clips, dev->clips_cap,
1091 clipcount * sizeof(dev->clips_cap[0])))
1092 return -EFAULT;
1093 }
1094 return 0;
1095 }
1096
vidioc_try_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1097 int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
1098 struct v4l2_format *f)
1099 {
1100 struct vivid_dev *dev = video_drvdata(file);
1101 const struct v4l2_rect *compose = &dev->compose_cap;
1102 struct v4l2_window *win = &f->fmt.win;
1103 int i, j;
1104
1105 if (dev->multiplanar)
1106 return -ENOTTY;
1107
1108 win->w.left = clamp_t(int, win->w.left,
1109 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1110 win->w.top = clamp_t(int, win->w.top,
1111 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1112 win->w.width = compose->width;
1113 win->w.height = compose->height;
1114 if (win->field != V4L2_FIELD_BOTTOM && win->field != V4L2_FIELD_TOP)
1115 win->field = V4L2_FIELD_ANY;
1116 win->chromakey = 0;
1117 win->global_alpha = 0;
1118 if (win->clipcount && !win->clips)
1119 win->clipcount = 0;
1120 if (win->clipcount > MAX_CLIPS)
1121 win->clipcount = MAX_CLIPS;
1122 if (win->clipcount) {
1123 if (copy_from_user(dev->try_clips_cap, win->clips,
1124 win->clipcount * sizeof(dev->clips_cap[0])))
1125 return -EFAULT;
1126 for (i = 0; i < win->clipcount; i++) {
1127 struct v4l2_rect *r = &dev->try_clips_cap[i].c;
1128
1129 r->top = clamp_t(s32, r->top, 0, dev->fb_cap.fmt.height - 1);
1130 r->height = clamp_t(s32, r->height, 1, dev->fb_cap.fmt.height - r->top);
1131 r->left = clamp_t(u32, r->left, 0, dev->fb_cap.fmt.width - 1);
1132 r->width = clamp_t(u32, r->width, 1, dev->fb_cap.fmt.width - r->left);
1133 }
1134 /*
1135 * Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
1136 * number and it's typically a one-time deal.
1137 */
1138 for (i = 0; i < win->clipcount - 1; i++) {
1139 struct v4l2_rect *r1 = &dev->try_clips_cap[i].c;
1140
1141 for (j = i + 1; j < win->clipcount; j++) {
1142 struct v4l2_rect *r2 = &dev->try_clips_cap[j].c;
1143
1144 if (v4l2_rect_overlap(r1, r2))
1145 return -EINVAL;
1146 }
1147 }
1148 if (copy_to_user(win->clips, dev->try_clips_cap,
1149 win->clipcount * sizeof(dev->clips_cap[0])))
1150 return -EFAULT;
1151 }
1152 return 0;
1153 }
1154
vidioc_s_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1155 int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
1156 struct v4l2_format *f)
1157 {
1158 struct vivid_dev *dev = video_drvdata(file);
1159 const struct v4l2_rect *compose = &dev->compose_cap;
1160 struct v4l2_window *win = &f->fmt.win;
1161 int ret = vidioc_try_fmt_vid_overlay(file, priv, f);
1162 unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
1163 unsigned clips_size = win->clipcount * sizeof(dev->clips_cap[0]);
1164 void *new_bitmap = NULL;
1165
1166 if (ret)
1167 return ret;
1168
1169 if (win->bitmap) {
1170 new_bitmap = vzalloc(bitmap_size);
1171
1172 if (new_bitmap == NULL)
1173 return -ENOMEM;
1174 if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
1175 vfree(new_bitmap);
1176 return -EFAULT;
1177 }
1178 }
1179
1180 dev->overlay_cap_top = win->w.top;
1181 dev->overlay_cap_left = win->w.left;
1182 dev->overlay_cap_field = win->field;
1183 vfree(dev->bitmap_cap);
1184 dev->bitmap_cap = new_bitmap;
1185 dev->clipcount_cap = win->clipcount;
1186 if (dev->clipcount_cap)
1187 memcpy(dev->clips_cap, dev->try_clips_cap, clips_size);
1188 return 0;
1189 }
1190
vivid_vid_cap_overlay(struct file * file,void * fh,unsigned i)1191 int vivid_vid_cap_overlay(struct file *file, void *fh, unsigned i)
1192 {
1193 struct vivid_dev *dev = video_drvdata(file);
1194
1195 if (dev->multiplanar)
1196 return -ENOTTY;
1197
1198 if (i && dev->fb_vbase_cap == NULL)
1199 return -EINVAL;
1200
1201 if (i && dev->fb_cap.fmt.pixelformat != dev->fmt_cap->fourcc) {
1202 dprintk(dev, 1, "mismatch between overlay and video capture pixelformats\n");
1203 return -EINVAL;
1204 }
1205
1206 if (dev->overlay_cap_owner && dev->overlay_cap_owner != fh)
1207 return -EBUSY;
1208 dev->overlay_cap_owner = i ? fh : NULL;
1209 return 0;
1210 }
1211
vivid_vid_cap_g_fbuf(struct file * file,void * fh,struct v4l2_framebuffer * a)1212 int vivid_vid_cap_g_fbuf(struct file *file, void *fh,
1213 struct v4l2_framebuffer *a)
1214 {
1215 struct vivid_dev *dev = video_drvdata(file);
1216
1217 if (dev->multiplanar)
1218 return -ENOTTY;
1219
1220 *a = dev->fb_cap;
1221 a->capability = V4L2_FBUF_CAP_BITMAP_CLIPPING |
1222 V4L2_FBUF_CAP_LIST_CLIPPING;
1223 a->flags = V4L2_FBUF_FLAG_PRIMARY;
1224 a->fmt.field = V4L2_FIELD_NONE;
1225 a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1226 a->fmt.priv = 0;
1227 return 0;
1228 }
1229
vivid_vid_cap_s_fbuf(struct file * file,void * fh,const struct v4l2_framebuffer * a)1230 int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
1231 const struct v4l2_framebuffer *a)
1232 {
1233 struct vivid_dev *dev = video_drvdata(file);
1234 const struct vivid_fmt *fmt;
1235
1236 if (dev->multiplanar)
1237 return -ENOTTY;
1238
1239 if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1240 return -EPERM;
1241
1242 if (dev->overlay_cap_owner)
1243 return -EBUSY;
1244
1245 if (a->base == NULL) {
1246 dev->fb_cap.base = NULL;
1247 dev->fb_vbase_cap = NULL;
1248 return 0;
1249 }
1250
1251 if (a->fmt.width < 48 || a->fmt.height < 32)
1252 return -EINVAL;
1253 fmt = vivid_get_format(dev, a->fmt.pixelformat);
1254 if (!fmt || !fmt->can_do_overlay)
1255 return -EINVAL;
1256 if (a->fmt.bytesperline < (a->fmt.width * fmt->bit_depth[0]) / 8)
1257 return -EINVAL;
1258 if (a->fmt.height * a->fmt.bytesperline < a->fmt.sizeimage)
1259 return -EINVAL;
1260
1261 dev->fb_vbase_cap = phys_to_virt((unsigned long)a->base);
1262 dev->fb_cap = *a;
1263 dev->overlay_cap_left = clamp_t(int, dev->overlay_cap_left,
1264 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1265 dev->overlay_cap_top = clamp_t(int, dev->overlay_cap_top,
1266 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1267 return 0;
1268 }
1269
1270 static const struct v4l2_audio vivid_audio_inputs[] = {
1271 { 0, "TV", V4L2_AUDCAP_STEREO },
1272 { 1, "Line-In", V4L2_AUDCAP_STEREO },
1273 };
1274
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * inp)1275 int vidioc_enum_input(struct file *file, void *priv,
1276 struct v4l2_input *inp)
1277 {
1278 struct vivid_dev *dev = video_drvdata(file);
1279
1280 if (inp->index >= dev->num_inputs)
1281 return -EINVAL;
1282
1283 inp->type = V4L2_INPUT_TYPE_CAMERA;
1284 switch (dev->input_type[inp->index]) {
1285 case WEBCAM:
1286 snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1287 dev->input_name_counter[inp->index]);
1288 inp->capabilities = 0;
1289 break;
1290 case TV:
1291 snprintf(inp->name, sizeof(inp->name), "TV %u",
1292 dev->input_name_counter[inp->index]);
1293 inp->type = V4L2_INPUT_TYPE_TUNER;
1294 inp->std = V4L2_STD_ALL;
1295 if (dev->has_audio_inputs)
1296 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1297 inp->capabilities = V4L2_IN_CAP_STD;
1298 break;
1299 case SVID:
1300 snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1301 dev->input_name_counter[inp->index]);
1302 inp->std = V4L2_STD_ALL;
1303 if (dev->has_audio_inputs)
1304 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1305 inp->capabilities = V4L2_IN_CAP_STD;
1306 break;
1307 case HDMI:
1308 snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1309 dev->input_name_counter[inp->index]);
1310 inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1311 if (dev->edid_blocks == 0 ||
1312 dev->dv_timings_signal_mode == NO_SIGNAL)
1313 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1314 else if (dev->dv_timings_signal_mode == NO_LOCK ||
1315 dev->dv_timings_signal_mode == OUT_OF_RANGE)
1316 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1317 break;
1318 }
1319 if (dev->sensor_hflip)
1320 inp->status |= V4L2_IN_ST_HFLIP;
1321 if (dev->sensor_vflip)
1322 inp->status |= V4L2_IN_ST_VFLIP;
1323 if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1324 if (dev->std_signal_mode == NO_SIGNAL) {
1325 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1326 } else if (dev->std_signal_mode == NO_LOCK) {
1327 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1328 } else if (vivid_is_tv_cap(dev)) {
1329 switch (tpg_g_quality(&dev->tpg)) {
1330 case TPG_QUAL_GRAY:
1331 inp->status |= V4L2_IN_ST_COLOR_KILL;
1332 break;
1333 case TPG_QUAL_NOISE:
1334 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1335 break;
1336 default:
1337 break;
1338 }
1339 }
1340 }
1341 return 0;
1342 }
1343
vidioc_g_input(struct file * file,void * priv,unsigned * i)1344 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1345 {
1346 struct vivid_dev *dev = video_drvdata(file);
1347
1348 *i = dev->input;
1349 return 0;
1350 }
1351
vidioc_s_input(struct file * file,void * priv,unsigned i)1352 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1353 {
1354 struct vivid_dev *dev = video_drvdata(file);
1355 struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
1356 unsigned brightness;
1357
1358 if (i >= dev->num_inputs)
1359 return -EINVAL;
1360
1361 if (i == dev->input)
1362 return 0;
1363
1364 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1365 return -EBUSY;
1366
1367 dev->input = i;
1368 dev->vid_cap_dev.tvnorms = 0;
1369 if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1370 dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1371 dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1372 }
1373 dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1374 vivid_update_format_cap(dev, false);
1375
1376 if (dev->colorspace) {
1377 switch (dev->input_type[i]) {
1378 case WEBCAM:
1379 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1380 break;
1381 case TV:
1382 case SVID:
1383 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1384 break;
1385 case HDMI:
1386 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1387 if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1388 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1389 else
1390 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1391 } else {
1392 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1393 }
1394 break;
1395 }
1396 }
1397
1398 /*
1399 * Modify the brightness range depending on the input.
1400 * This makes it easy to use vivid to test if applications can
1401 * handle control range modifications and is also how this is
1402 * typically used in practice as different inputs may be hooked
1403 * up to different receivers with different control ranges.
1404 */
1405 brightness = 128 * i + dev->input_brightness[i];
1406 v4l2_ctrl_modify_range(dev->brightness,
1407 128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1408 v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1409 return 0;
1410 }
1411
vidioc_enumaudio(struct file * file,void * fh,struct v4l2_audio * vin)1412 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1413 {
1414 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1415 return -EINVAL;
1416 *vin = vivid_audio_inputs[vin->index];
1417 return 0;
1418 }
1419
vidioc_g_audio(struct file * file,void * fh,struct v4l2_audio * vin)1420 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1421 {
1422 struct vivid_dev *dev = video_drvdata(file);
1423
1424 if (!vivid_is_sdtv_cap(dev))
1425 return -EINVAL;
1426 *vin = vivid_audio_inputs[dev->tv_audio_input];
1427 return 0;
1428 }
1429
vidioc_s_audio(struct file * file,void * fh,const struct v4l2_audio * vin)1430 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1431 {
1432 struct vivid_dev *dev = video_drvdata(file);
1433
1434 if (!vivid_is_sdtv_cap(dev))
1435 return -EINVAL;
1436 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1437 return -EINVAL;
1438 dev->tv_audio_input = vin->index;
1439 return 0;
1440 }
1441
vivid_video_g_frequency(struct file * file,void * fh,struct v4l2_frequency * vf)1442 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1443 {
1444 struct vivid_dev *dev = video_drvdata(file);
1445
1446 if (vf->tuner != 0)
1447 return -EINVAL;
1448 vf->frequency = dev->tv_freq;
1449 return 0;
1450 }
1451
vivid_video_s_frequency(struct file * file,void * fh,const struct v4l2_frequency * vf)1452 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1453 {
1454 struct vivid_dev *dev = video_drvdata(file);
1455
1456 if (vf->tuner != 0)
1457 return -EINVAL;
1458 dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1459 if (vivid_is_tv_cap(dev))
1460 vivid_update_quality(dev);
1461 return 0;
1462 }
1463
vivid_video_s_tuner(struct file * file,void * fh,const struct v4l2_tuner * vt)1464 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1465 {
1466 struct vivid_dev *dev = video_drvdata(file);
1467
1468 if (vt->index != 0)
1469 return -EINVAL;
1470 if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1471 return -EINVAL;
1472 dev->tv_audmode = vt->audmode;
1473 return 0;
1474 }
1475
vivid_video_g_tuner(struct file * file,void * fh,struct v4l2_tuner * vt)1476 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1477 {
1478 struct vivid_dev *dev = video_drvdata(file);
1479 enum tpg_quality qual;
1480
1481 if (vt->index != 0)
1482 return -EINVAL;
1483
1484 vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1485 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1486 vt->audmode = dev->tv_audmode;
1487 vt->rangelow = MIN_TV_FREQ;
1488 vt->rangehigh = MAX_TV_FREQ;
1489 qual = vivid_get_quality(dev, &vt->afc);
1490 if (qual == TPG_QUAL_COLOR)
1491 vt->signal = 0xffff;
1492 else if (qual == TPG_QUAL_GRAY)
1493 vt->signal = 0x8000;
1494 else
1495 vt->signal = 0;
1496 if (qual == TPG_QUAL_NOISE) {
1497 vt->rxsubchans = 0;
1498 } else if (qual == TPG_QUAL_GRAY) {
1499 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1500 } else {
1501 unsigned channel_nr = dev->tv_freq / (6 * 16);
1502 unsigned options = (dev->std_cap & V4L2_STD_NTSC_M) ? 4 : 3;
1503
1504 switch (channel_nr % options) {
1505 case 0:
1506 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1507 break;
1508 case 1:
1509 vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1510 break;
1511 case 2:
1512 if (dev->std_cap & V4L2_STD_NTSC_M)
1513 vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1514 else
1515 vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1516 break;
1517 case 3:
1518 vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1519 break;
1520 }
1521 }
1522 strlcpy(vt->name, "TV Tuner", sizeof(vt->name));
1523 return 0;
1524 }
1525
1526 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1527 const v4l2_std_id vivid_standard[] = {
1528 V4L2_STD_NTSC_M,
1529 V4L2_STD_NTSC_M_JP,
1530 V4L2_STD_NTSC_M_KR,
1531 V4L2_STD_NTSC_443,
1532 V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1533 V4L2_STD_PAL_I,
1534 V4L2_STD_PAL_DK,
1535 V4L2_STD_PAL_M,
1536 V4L2_STD_PAL_N,
1537 V4L2_STD_PAL_Nc,
1538 V4L2_STD_PAL_60,
1539 V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1540 V4L2_STD_SECAM_DK,
1541 V4L2_STD_SECAM_L,
1542 V4L2_STD_SECAM_LC,
1543 V4L2_STD_UNKNOWN
1544 };
1545
1546 /* Must remain in sync with the vivid_standard array */
1547 const char * const vivid_ctrl_standard_strings[] = {
1548 "NTSC-M",
1549 "NTSC-M-JP",
1550 "NTSC-M-KR",
1551 "NTSC-443",
1552 "PAL-BGH",
1553 "PAL-I",
1554 "PAL-DK",
1555 "PAL-M",
1556 "PAL-N",
1557 "PAL-Nc",
1558 "PAL-60",
1559 "SECAM-BGH",
1560 "SECAM-DK",
1561 "SECAM-L",
1562 "SECAM-Lc",
1563 NULL,
1564 };
1565
vidioc_querystd(struct file * file,void * priv,v4l2_std_id * id)1566 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1567 {
1568 struct vivid_dev *dev = video_drvdata(file);
1569
1570 if (!vivid_is_sdtv_cap(dev))
1571 return -ENODATA;
1572 if (dev->std_signal_mode == NO_SIGNAL ||
1573 dev->std_signal_mode == NO_LOCK) {
1574 *id = V4L2_STD_UNKNOWN;
1575 return 0;
1576 }
1577 if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1578 *id = V4L2_STD_UNKNOWN;
1579 } else if (dev->std_signal_mode == CURRENT_STD) {
1580 *id = dev->std_cap;
1581 } else if (dev->std_signal_mode == SELECTED_STD) {
1582 *id = dev->query_std;
1583 } else {
1584 *id = vivid_standard[dev->query_std_last];
1585 dev->query_std_last = (dev->query_std_last + 1) % ARRAY_SIZE(vivid_standard);
1586 }
1587
1588 return 0;
1589 }
1590
vivid_vid_cap_s_std(struct file * file,void * priv,v4l2_std_id id)1591 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1592 {
1593 struct vivid_dev *dev = video_drvdata(file);
1594
1595 if (!vivid_is_sdtv_cap(dev))
1596 return -ENODATA;
1597 if (dev->std_cap == id)
1598 return 0;
1599 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1600 return -EBUSY;
1601 dev->std_cap = id;
1602 vivid_update_format_cap(dev, false);
1603 return 0;
1604 }
1605
find_aspect_ratio(u32 width,u32 height,u32 * num,u32 * denom)1606 static void find_aspect_ratio(u32 width, u32 height,
1607 u32 *num, u32 *denom)
1608 {
1609 if (!(height % 3) && ((height * 4 / 3) == width)) {
1610 *num = 4;
1611 *denom = 3;
1612 } else if (!(height % 9) && ((height * 16 / 9) == width)) {
1613 *num = 16;
1614 *denom = 9;
1615 } else if (!(height % 10) && ((height * 16 / 10) == width)) {
1616 *num = 16;
1617 *denom = 10;
1618 } else if (!(height % 4) && ((height * 5 / 4) == width)) {
1619 *num = 5;
1620 *denom = 4;
1621 } else if (!(height % 9) && ((height * 15 / 9) == width)) {
1622 *num = 15;
1623 *denom = 9;
1624 } else { /* default to 16:9 */
1625 *num = 16;
1626 *denom = 9;
1627 }
1628 }
1629
valid_cvt_gtf_timings(struct v4l2_dv_timings * timings)1630 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1631 {
1632 struct v4l2_bt_timings *bt = &timings->bt;
1633 u32 total_h_pixel;
1634 u32 total_v_lines;
1635 u32 h_freq;
1636
1637 if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1638 NULL, NULL))
1639 return false;
1640
1641 total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1642 total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1643
1644 h_freq = (u32)bt->pixelclock / total_h_pixel;
1645
1646 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1647 if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1648 bt->polarities, bt->interlaced, timings))
1649 return true;
1650 }
1651
1652 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1653 struct v4l2_fract aspect_ratio;
1654
1655 find_aspect_ratio(bt->width, bt->height,
1656 &aspect_ratio.numerator,
1657 &aspect_ratio.denominator);
1658 if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1659 bt->polarities, bt->interlaced,
1660 aspect_ratio, timings))
1661 return true;
1662 }
1663 return false;
1664 }
1665
vivid_vid_cap_s_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1666 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1667 struct v4l2_dv_timings *timings)
1668 {
1669 struct vivid_dev *dev = video_drvdata(file);
1670
1671 if (!vivid_is_hdmi_cap(dev))
1672 return -ENODATA;
1673 if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1674 0, NULL, NULL) &&
1675 !valid_cvt_gtf_timings(timings))
1676 return -EINVAL;
1677
1678 if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap, 0, false))
1679 return 0;
1680 if (vb2_is_busy(&dev->vb_vid_cap_q))
1681 return -EBUSY;
1682
1683 dev->dv_timings_cap = *timings;
1684 vivid_update_format_cap(dev, false);
1685 return 0;
1686 }
1687
vidioc_query_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1688 int vidioc_query_dv_timings(struct file *file, void *_fh,
1689 struct v4l2_dv_timings *timings)
1690 {
1691 struct vivid_dev *dev = video_drvdata(file);
1692
1693 if (!vivid_is_hdmi_cap(dev))
1694 return -ENODATA;
1695 if (dev->dv_timings_signal_mode == NO_SIGNAL ||
1696 dev->edid_blocks == 0)
1697 return -ENOLINK;
1698 if (dev->dv_timings_signal_mode == NO_LOCK)
1699 return -ENOLCK;
1700 if (dev->dv_timings_signal_mode == OUT_OF_RANGE) {
1701 timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1702 return -ERANGE;
1703 }
1704 if (dev->dv_timings_signal_mode == CURRENT_DV_TIMINGS) {
1705 *timings = dev->dv_timings_cap;
1706 } else if (dev->dv_timings_signal_mode == SELECTED_DV_TIMINGS) {
1707 *timings = v4l2_dv_timings_presets[dev->query_dv_timings];
1708 } else {
1709 *timings = v4l2_dv_timings_presets[dev->query_dv_timings_last];
1710 dev->query_dv_timings_last = (dev->query_dv_timings_last + 1) %
1711 dev->query_dv_timings_size;
1712 }
1713 return 0;
1714 }
1715
vidioc_s_edid(struct file * file,void * _fh,struct v4l2_edid * edid)1716 int vidioc_s_edid(struct file *file, void *_fh,
1717 struct v4l2_edid *edid)
1718 {
1719 struct vivid_dev *dev = video_drvdata(file);
1720 u16 phys_addr;
1721 unsigned int i;
1722 int ret;
1723
1724 memset(edid->reserved, 0, sizeof(edid->reserved));
1725 if (edid->pad >= dev->num_inputs)
1726 return -EINVAL;
1727 if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1728 return -EINVAL;
1729 if (edid->blocks == 0) {
1730 dev->edid_blocks = 0;
1731 phys_addr = CEC_PHYS_ADDR_INVALID;
1732 goto set_phys_addr;
1733 }
1734 if (edid->blocks > dev->edid_max_blocks) {
1735 edid->blocks = dev->edid_max_blocks;
1736 return -E2BIG;
1737 }
1738 phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1739 ret = cec_phys_addr_validate(phys_addr, &phys_addr, NULL);
1740 if (ret)
1741 return ret;
1742
1743 if (vb2_is_busy(&dev->vb_vid_cap_q))
1744 return -EBUSY;
1745
1746 dev->edid_blocks = edid->blocks;
1747 memcpy(dev->edid, edid->edid, edid->blocks * 128);
1748
1749 set_phys_addr:
1750 /* TODO: a proper hotplug detect cycle should be emulated here */
1751 cec_s_phys_addr(dev->cec_rx_adap, phys_addr, false);
1752
1753 for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++)
1754 cec_s_phys_addr(dev->cec_tx_adap[i],
1755 cec_phys_addr_for_input(phys_addr, i + 1),
1756 false);
1757 return 0;
1758 }
1759
vidioc_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)1760 int vidioc_enum_framesizes(struct file *file, void *fh,
1761 struct v4l2_frmsizeenum *fsize)
1762 {
1763 struct vivid_dev *dev = video_drvdata(file);
1764
1765 if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1766 return -EINVAL;
1767 if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1768 return -EINVAL;
1769 if (vivid_is_webcam(dev)) {
1770 if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1771 return -EINVAL;
1772 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1773 fsize->discrete = webcam_sizes[fsize->index];
1774 return 0;
1775 }
1776 if (fsize->index)
1777 return -EINVAL;
1778 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1779 fsize->stepwise.min_width = MIN_WIDTH;
1780 fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1781 fsize->stepwise.step_width = 2;
1782 fsize->stepwise.min_height = MIN_HEIGHT;
1783 fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1784 fsize->stepwise.step_height = 2;
1785 return 0;
1786 }
1787
1788 /* timeperframe is arbitrary and continuous */
vidioc_enum_frameintervals(struct file * file,void * priv,struct v4l2_frmivalenum * fival)1789 int vidioc_enum_frameintervals(struct file *file, void *priv,
1790 struct v4l2_frmivalenum *fival)
1791 {
1792 struct vivid_dev *dev = video_drvdata(file);
1793 const struct vivid_fmt *fmt;
1794 int i;
1795
1796 fmt = vivid_get_format(dev, fival->pixel_format);
1797 if (!fmt)
1798 return -EINVAL;
1799
1800 if (!vivid_is_webcam(dev)) {
1801 if (fival->index)
1802 return -EINVAL;
1803 if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1804 return -EINVAL;
1805 if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1806 return -EINVAL;
1807 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1808 fival->discrete = dev->timeperframe_vid_cap;
1809 return 0;
1810 }
1811
1812 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1813 if (fival->width == webcam_sizes[i].width &&
1814 fival->height == webcam_sizes[i].height)
1815 break;
1816 if (i == ARRAY_SIZE(webcam_sizes))
1817 return -EINVAL;
1818 if (fival->index >= 2 * (VIVID_WEBCAM_SIZES - i))
1819 return -EINVAL;
1820 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1821 fival->discrete = webcam_intervals[fival->index];
1822 return 0;
1823 }
1824
vivid_vid_cap_g_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1825 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1826 struct v4l2_streamparm *parm)
1827 {
1828 struct vivid_dev *dev = video_drvdata(file);
1829
1830 if (parm->type != (dev->multiplanar ?
1831 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1832 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1833 return -EINVAL;
1834
1835 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1836 parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1837 parm->parm.capture.readbuffers = 1;
1838 return 0;
1839 }
1840
1841 #define FRACT_CMP(a, OP, b) \
1842 ((u64)(a).numerator * (b).denominator OP (u64)(b).numerator * (a).denominator)
1843
vivid_vid_cap_s_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1844 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1845 struct v4l2_streamparm *parm)
1846 {
1847 struct vivid_dev *dev = video_drvdata(file);
1848 unsigned ival_sz = 2 * (VIVID_WEBCAM_SIZES - dev->webcam_size_idx);
1849 struct v4l2_fract tpf;
1850 unsigned i;
1851
1852 if (parm->type != (dev->multiplanar ?
1853 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1854 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1855 return -EINVAL;
1856 if (!vivid_is_webcam(dev))
1857 return vivid_vid_cap_g_parm(file, priv, parm);
1858
1859 tpf = parm->parm.capture.timeperframe;
1860
1861 if (tpf.denominator == 0)
1862 tpf = webcam_intervals[ival_sz - 1];
1863 for (i = 0; i < ival_sz; i++)
1864 if (FRACT_CMP(tpf, >=, webcam_intervals[i]))
1865 break;
1866 if (i == ival_sz)
1867 i = ival_sz - 1;
1868 dev->webcam_ival_idx = i;
1869 tpf = webcam_intervals[dev->webcam_ival_idx];
1870 tpf = FRACT_CMP(tpf, <, tpf_min) ? tpf_min : tpf;
1871 tpf = FRACT_CMP(tpf, >, tpf_max) ? tpf_max : tpf;
1872
1873 /* resync the thread's timings */
1874 dev->cap_seq_resync = true;
1875 dev->timeperframe_vid_cap = tpf;
1876 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1877 parm->parm.capture.timeperframe = tpf;
1878 parm->parm.capture.readbuffers = 1;
1879 return 0;
1880 }
1881