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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux/fpc-iii.git] / drivers / media / platform / vivid / vivid-vid-cap.c
blobb84f081c1b929b9e89d577fbdf585c30e836d34a
1 /*
2 * vivid-vid-cap.c - video capture support functions.
3 *
4 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
5 *
6 * This program is free software; you may redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
11 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
12 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
13 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
14 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
15 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
16 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17 * SOFTWARE.
18 */
19
20 #include <linux/errno.h>
21 #include <linux/kernel.h>
22 #include <linux/sched.h>
23 #include <linux/vmalloc.h>
24 #include <linux/videodev2.h>
25 #include <linux/v4l2-dv-timings.h>
26 #include <media/v4l2-common.h>
27 #include <media/v4l2-event.h>
28 #include <media/v4l2-dv-timings.h>
29
30 #include "vivid-core.h"
31 #include "vivid-vid-common.h"
32 #include "vivid-kthread-cap.h"
33 #include "vivid-vid-cap.h"
34
35 /* timeperframe: min/max and default */
36 static const struct v4l2_fract
37 tpf_min = {.numerator = 1, .denominator = FPS_MAX},
38 tpf_max = {.numerator = FPS_MAX, .denominator = 1},
39 tpf_default = {.numerator = 1, .denominator = 30};
40
41 static const struct vivid_fmt formats_ovl[] = {
42 {
43 .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 4
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 };
77
78 /*
79 * Intervals must be in increasing order and there must be twice as many
80 * elements in this array as there are in webcam_sizes.
81 */
82 static const struct v4l2_fract webcam_intervals[VIVID_WEBCAM_IVALS] = {
83 { 1, 2 },
84 { 1, 5 },
85 { 1, 10 },
86 { 1, 15 },
87 { 1, 25 },
88 { 1, 30 },
89 { 1, 50 },
90 { 1, 60 },
91 };
92
93 static const struct v4l2_discrete_probe webcam_probe = {
94 webcam_sizes,
95 VIVID_WEBCAM_SIZES
96 };
97
98 static int vid_cap_queue_setup(struct vb2_queue *vq,
99 unsigned *nbuffers, unsigned *nplanes,
100 unsigned sizes[], void *alloc_ctxs[])
101 {
102 struct vivid_dev *dev = vb2_get_drv_priv(vq);
103 unsigned buffers = tpg_g_buffers(&dev->tpg);
104 unsigned h = dev->fmt_cap_rect.height;
105 unsigned p;
106
107 if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
108 /*
109 * You cannot use read() with FIELD_ALTERNATE since the field
110 * information (TOP/BOTTOM) cannot be passed back to the user.
111 */
112 if (vb2_fileio_is_active(vq))
113 return -EINVAL;
114 }
115
116 if (dev->queue_setup_error) {
117 /*
118 * Error injection: test what happens if queue_setup() returns
119 * an error.
120 */
121 dev->queue_setup_error = false;
122 return -EINVAL;
123 }
124 if (*nplanes) {
125 /*
126 * Check if the number of requested planes match
127 * the number of buffers in the current format. You can't mix that.
128 */
129 if (*nplanes != buffers)
130 return -EINVAL;
131 for (p = 0; p < buffers; p++) {
132 if (sizes[p] < tpg_g_line_width(&dev->tpg, p) * h +
133 dev->fmt_cap->data_offset[p])
134 return -EINVAL;
135 }
136 } else {
137 for (p = 0; p < buffers; p++)
138 sizes[p] = tpg_g_line_width(&dev->tpg, p) * h +
139 dev->fmt_cap->data_offset[p];
140 }
141
142 if (vq->num_buffers + *nbuffers < 2)
143 *nbuffers = 2 - vq->num_buffers;
144
145 *nplanes = buffers;
146
147 /*
148 * videobuf2-vmalloc allocator is context-less so no need to set
149 * alloc_ctxs array.
150 */
151
152 dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
153 for (p = 0; p < buffers; p++)
154 dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
155
156 return 0;
157 }
158
159 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
160 {
161 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
162 unsigned long size;
163 unsigned buffers = tpg_g_buffers(&dev->tpg);
164 unsigned p;
165
166 dprintk(dev, 1, "%s\n", __func__);
167
168 if (WARN_ON(NULL == dev->fmt_cap))
169 return -EINVAL;
170
171 if (dev->buf_prepare_error) {
172 /*
173 * Error injection: test what happens if buf_prepare() returns
174 * an error.
175 */
176 dev->buf_prepare_error = false;
177 return -EINVAL;
178 }
179 for (p = 0; p < buffers; p++) {
180 size = tpg_g_line_width(&dev->tpg, p) * dev->fmt_cap_rect.height +
181 dev->fmt_cap->data_offset[p];
182
183 if (vb2_plane_size(vb, p) < size) {
184 dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
185 __func__, p, vb2_plane_size(vb, p), size);
186 return -EINVAL;
187 }
188
189 vb2_set_plane_payload(vb, p, size);
190 vb->planes[p].data_offset = dev->fmt_cap->data_offset[p];
191 }
192
193 return 0;
194 }
195
196 static void vid_cap_buf_finish(struct vb2_buffer *vb)
197 {
198 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
199 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
200 struct v4l2_timecode *tc = &vbuf->timecode;
201 unsigned fps = 25;
202 unsigned seq = vbuf->sequence;
203
204 if (!vivid_is_sdtv_cap(dev))
205 return;
206
207 /*
208 * Set the timecode. Rarely used, so it is interesting to
209 * test this.
210 */
211 vbuf->flags |= V4L2_BUF_FLAG_TIMECODE;
212 if (dev->std_cap & V4L2_STD_525_60)
213 fps = 30;
214 tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
215 tc->flags = 0;
216 tc->frames = seq % fps;
217 tc->seconds = (seq / fps) % 60;
218 tc->minutes = (seq / (60 * fps)) % 60;
219 tc->hours = (seq / (60 * 60 * fps)) % 24;
220 }
221
222 static void vid_cap_buf_queue(struct vb2_buffer *vb)
223 {
224 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
225 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
226 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
227
228 dprintk(dev, 1, "%s\n", __func__);
229
230 spin_lock(&dev->slock);
231 list_add_tail(&buf->list, &dev->vid_cap_active);
232 spin_unlock(&dev->slock);
233 }
234
235 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
236 {
237 struct vivid_dev *dev = vb2_get_drv_priv(vq);
238 unsigned i;
239 int err;
240
241 if (vb2_is_streaming(&dev->vb_vid_out_q))
242 dev->can_loop_video = vivid_vid_can_loop(dev);
243
244 if (dev->kthread_vid_cap)
245 return 0;
246
247 dev->vid_cap_seq_count = 0;
248 dprintk(dev, 1, "%s\n", __func__);
249 for (i = 0; i < VIDEO_MAX_FRAME; i++)
250 dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
251 if (dev->start_streaming_error) {
252 dev->start_streaming_error = false;
253 err = -EINVAL;
254 } else {
255 err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
256 }
257 if (err) {
258 struct vivid_buffer *buf, *tmp;
259
260 list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
261 list_del(&buf->list);
262 vb2_buffer_done(&buf->vb.vb2_buf,
263 VB2_BUF_STATE_QUEUED);
264 }
265 }
266 return err;
267 }
268
269 /* abort streaming and wait for last buffer */
270 static void vid_cap_stop_streaming(struct vb2_queue *vq)
271 {
272 struct vivid_dev *dev = vb2_get_drv_priv(vq);
273
274 dprintk(dev, 1, "%s\n", __func__);
275 vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
276 dev->can_loop_video = false;
277 }
278
279 const struct vb2_ops vivid_vid_cap_qops = {
280 .queue_setup = vid_cap_queue_setup,
281 .buf_prepare = vid_cap_buf_prepare,
282 .buf_finish = vid_cap_buf_finish,
283 .buf_queue = vid_cap_buf_queue,
284 .start_streaming = vid_cap_start_streaming,
285 .stop_streaming = vid_cap_stop_streaming,
286 .wait_prepare = vb2_ops_wait_prepare,
287 .wait_finish = vb2_ops_wait_finish,
288 };
289
290 /*
291 * Determine the 'picture' quality based on the current TV frequency: either
292 * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
293 * signal or NOISE for no signal.
294 */
295 void vivid_update_quality(struct vivid_dev *dev)
296 {
297 unsigned freq_modulus;
298
299 if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
300 /*
301 * The 'noise' will only be replaced by the actual video
302 * if the output video matches the input video settings.
303 */
304 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
305 return;
306 }
307 if (vivid_is_hdmi_cap(dev) && VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode)) {
308 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
309 return;
310 }
311 if (vivid_is_sdtv_cap(dev) && VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
312 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
313 return;
314 }
315 if (!vivid_is_tv_cap(dev)) {
316 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
317 return;
318 }
319
320 /*
321 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
322 * From +/- 0.25 MHz around the channel there is color, and from
323 * +/- 1 MHz there is grayscale (chroma is lost).
324 * Everywhere else it is just noise.
325 */
326 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
327 if (freq_modulus > 2 * 16) {
328 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
329 next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
330 return;
331 }
332 if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
333 tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
334 else
335 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
336 }
337
338 /*
339 * Get the current picture quality and the associated afc value.
340 */
341 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
342 {
343 unsigned freq_modulus;
344
345 if (afc)
346 *afc = 0;
347 if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
348 tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
349 return tpg_g_quality(&dev->tpg);
350
351 /*
352 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
353 * From +/- 0.25 MHz around the channel there is color, and from
354 * +/- 1 MHz there is grayscale (chroma is lost).
355 * Everywhere else it is just gray.
356 */
357 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
358 if (afc)
359 *afc = freq_modulus - 1 * 16;
360 return TPG_QUAL_GRAY;
361 }
362
363 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
364 {
365 if (vivid_is_sdtv_cap(dev))
366 return dev->std_aspect_ratio;
367
368 if (vivid_is_hdmi_cap(dev))
369 return dev->dv_timings_aspect_ratio;
370
371 return TPG_VIDEO_ASPECT_IMAGE;
372 }
373
374 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
375 {
376 if (vivid_is_sdtv_cap(dev))
377 return (dev->std_cap & V4L2_STD_525_60) ?
378 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
379
380 if (vivid_is_hdmi_cap(dev) &&
381 dev->src_rect.width == 720 && dev->src_rect.height <= 576)
382 return dev->src_rect.height == 480 ?
383 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
384
385 return TPG_PIXEL_ASPECT_SQUARE;
386 }
387
388 /*
389 * Called whenever the format has to be reset which can occur when
390 * changing inputs, standard, timings, etc.
391 */
392 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
393 {
394 struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
395 unsigned size;
396 u64 pixelclock;
397
398 switch (dev->input_type[dev->input]) {
399 case WEBCAM:
400 default:
401 dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
402 dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
403 dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
404 dev->field_cap = V4L2_FIELD_NONE;
405 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
406 break;
407 case TV:
408 case SVID:
409 dev->field_cap = dev->tv_field_cap;
410 dev->src_rect.width = 720;
411 if (dev->std_cap & V4L2_STD_525_60) {
412 dev->src_rect.height = 480;
413 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
414 dev->service_set_cap = V4L2_SLICED_CAPTION_525;
415 } else {
416 dev->src_rect.height = 576;
417 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
418 dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
419 }
420 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
421 break;
422 case HDMI:
423 dev->src_rect.width = bt->width;
424 dev->src_rect.height = bt->height;
425 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
426 if (dev->reduced_fps && can_reduce_fps(bt)) {
427 pixelclock = div_u64(bt->pixelclock * 1000, 1001);
428 bt->flags |= V4L2_DV_FL_REDUCED_FPS;
429 } else {
430 pixelclock = bt->pixelclock;
431 bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
432 }
433 dev->timeperframe_vid_cap = (struct v4l2_fract) {
434 size / 100, (u32)pixelclock / 100
435 };
436 if (bt->interlaced)
437 dev->field_cap = V4L2_FIELD_ALTERNATE;
438 else
439 dev->field_cap = V4L2_FIELD_NONE;
440
441 /*
442 * We can be called from within s_ctrl, in that case we can't
443 * set/get controls. Luckily we don't need to in that case.
444 */
445 if (keep_controls || !dev->colorspace)
446 break;
447 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
448 if (bt->width == 720 && bt->height <= 576)
449 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
450 else
451 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
452 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
453 } else {
454 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
455 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
456 }
457 tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
458 break;
459 }
460 vivid_update_quality(dev);
461 tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
462 dev->crop_cap = dev->src_rect;
463 dev->crop_bounds_cap = dev->src_rect;
464 dev->compose_cap = dev->crop_cap;
465 if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
466 dev->compose_cap.height /= 2;
467 dev->fmt_cap_rect = dev->compose_cap;
468 tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
469 tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
470 tpg_update_mv_step(&dev->tpg);
471 }
472
473 /* Map the field to something that is valid for the current input */
474 static enum v4l2_field vivid_field_cap(struct vivid_dev *dev, enum v4l2_field field)
475 {
476 if (vivid_is_sdtv_cap(dev)) {
477 switch (field) {
478 case V4L2_FIELD_INTERLACED_TB:
479 case V4L2_FIELD_INTERLACED_BT:
480 case V4L2_FIELD_SEQ_TB:
481 case V4L2_FIELD_SEQ_BT:
482 case V4L2_FIELD_TOP:
483 case V4L2_FIELD_BOTTOM:
484 case V4L2_FIELD_ALTERNATE:
485 return field;
486 case V4L2_FIELD_INTERLACED:
487 default:
488 return V4L2_FIELD_INTERLACED;
489 }
490 }
491 if (vivid_is_hdmi_cap(dev))
492 return dev->dv_timings_cap.bt.interlaced ? V4L2_FIELD_ALTERNATE :
493 V4L2_FIELD_NONE;
494 return V4L2_FIELD_NONE;
495 }
496
497 static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
498 {
499 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
500 return tpg_g_colorspace(&dev->tpg);
501 return dev->colorspace_out;
502 }
503
504 static unsigned vivid_xfer_func_cap(struct vivid_dev *dev)
505 {
506 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
507 return tpg_g_xfer_func(&dev->tpg);
508 return dev->xfer_func_out;
509 }
510
511 static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
512 {
513 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
514 return tpg_g_ycbcr_enc(&dev->tpg);
515 return dev->ycbcr_enc_out;
516 }
517
518 static unsigned vivid_quantization_cap(struct vivid_dev *dev)
519 {
520 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
521 return tpg_g_quantization(&dev->tpg);
522 return dev->quantization_out;
523 }
524
525 int vivid_g_fmt_vid_cap(struct file *file, void *priv,
526 struct v4l2_format *f)
527 {
528 struct vivid_dev *dev = video_drvdata(file);
529 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
530 unsigned p;
531
532 mp->width = dev->fmt_cap_rect.width;
533 mp->height = dev->fmt_cap_rect.height;
534 mp->field = dev->field_cap;
535 mp->pixelformat = dev->fmt_cap->fourcc;
536 mp->colorspace = vivid_colorspace_cap(dev);
537 mp->xfer_func = vivid_xfer_func_cap(dev);
538 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
539 mp->quantization = vivid_quantization_cap(dev);
540 mp->num_planes = dev->fmt_cap->buffers;
541 for (p = 0; p < mp->num_planes; p++) {
542 mp->plane_fmt[p].bytesperline = tpg_g_bytesperline(&dev->tpg, p);
543 mp->plane_fmt[p].sizeimage =
544 tpg_g_line_width(&dev->tpg, p) * mp->height +
545 dev->fmt_cap->data_offset[p];
546 }
547 return 0;
548 }
549
550 int vivid_try_fmt_vid_cap(struct file *file, void *priv,
551 struct v4l2_format *f)
552 {
553 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
554 struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
555 struct vivid_dev *dev = video_drvdata(file);
556 const struct vivid_fmt *fmt;
557 unsigned bytesperline, max_bpl;
558 unsigned factor = 1;
559 unsigned w, h;
560 unsigned p;
561
562 fmt = vivid_get_format(dev, mp->pixelformat);
563 if (!fmt) {
564 dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
565 mp->pixelformat);
566 mp->pixelformat = V4L2_PIX_FMT_YUYV;
567 fmt = vivid_get_format(dev, mp->pixelformat);
568 }
569
570 mp->field = vivid_field_cap(dev, mp->field);
571 if (vivid_is_webcam(dev)) {
572 const struct v4l2_frmsize_discrete *sz =
573 v4l2_find_nearest_format(&webcam_probe, mp->width, mp->height);
574
575 w = sz->width;
576 h = sz->height;
577 } else if (vivid_is_sdtv_cap(dev)) {
578 w = 720;
579 h = (dev->std_cap & V4L2_STD_525_60) ? 480 : 576;
580 } else {
581 w = dev->src_rect.width;
582 h = dev->src_rect.height;
583 }
584 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
585 factor = 2;
586 if (vivid_is_webcam(dev) ||
587 (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
588 mp->width = w;
589 mp->height = h / factor;
590 } else {
591 struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
592
593 rect_set_min_size(&r, &vivid_min_rect);
594 rect_set_max_size(&r, &vivid_max_rect);
595 if (dev->has_scaler_cap && !dev->has_compose_cap) {
596 struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
597
598 rect_set_max_size(&r, &max_r);
599 } else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
600 rect_set_max_size(&r, &dev->src_rect);
601 } else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
602 rect_set_min_size(&r, &dev->src_rect);
603 }
604 mp->width = r.width;
605 mp->height = r.height / factor;
606 }
607
608 /* This driver supports custom bytesperline values */
609
610 mp->num_planes = fmt->buffers;
611 for (p = 0; p < mp->num_planes; p++) {
612 /* Calculate the minimum supported bytesperline value */
613 bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
614 /* Calculate the maximum supported bytesperline value */
615 max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
616
617 if (pfmt[p].bytesperline > max_bpl)
618 pfmt[p].bytesperline = max_bpl;
619 if (pfmt[p].bytesperline < bytesperline)
620 pfmt[p].bytesperline = bytesperline;
621 pfmt[p].sizeimage = tpg_calc_line_width(&dev->tpg, p, pfmt[p].bytesperline) *
622 mp->height + fmt->data_offset[p];
623 memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
624 }
625 mp->colorspace = vivid_colorspace_cap(dev);
626 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
627 mp->xfer_func = vivid_xfer_func_cap(dev);
628 mp->quantization = vivid_quantization_cap(dev);
629 memset(mp->reserved, 0, sizeof(mp->reserved));
630 return 0;
631 }
632
633 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
634 struct v4l2_format *f)
635 {
636 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
637 struct vivid_dev *dev = video_drvdata(file);
638 struct v4l2_rect *crop = &dev->crop_cap;
639 struct v4l2_rect *compose = &dev->compose_cap;
640 struct vb2_queue *q = &dev->vb_vid_cap_q;
641 int ret = vivid_try_fmt_vid_cap(file, priv, f);
642 unsigned factor = 1;
643 unsigned p;
644 unsigned i;
645
646 if (ret < 0)
647 return ret;
648
649 if (vb2_is_busy(q)) {
650 dprintk(dev, 1, "%s device busy\n", __func__);
651 return -EBUSY;
652 }
653
654 if (dev->overlay_cap_owner && dev->fb_cap.fmt.pixelformat != mp->pixelformat) {
655 dprintk(dev, 1, "overlay is active, can't change pixelformat\n");
656 return -EBUSY;
657 }
658
659 dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
660 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
661 factor = 2;
662
663 /* Note: the webcam input doesn't support scaling, cropping or composing */
664
665 if (!vivid_is_webcam(dev) &&
666 (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
667 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
668
669 if (dev->has_scaler_cap) {
670 if (dev->has_compose_cap)
671 rect_map_inside(compose, &r);
672 else
673 *compose = r;
674 if (dev->has_crop_cap && !dev->has_compose_cap) {
675 struct v4l2_rect min_r = {
676 0, 0,
677 r.width / MAX_ZOOM,
678 factor * r.height / MAX_ZOOM
679 };
680 struct v4l2_rect max_r = {
681 0, 0,
682 r.width * MAX_ZOOM,
683 factor * r.height * MAX_ZOOM
684 };
685
686 rect_set_min_size(crop, &min_r);
687 rect_set_max_size(crop, &max_r);
688 rect_map_inside(crop, &dev->crop_bounds_cap);
689 } else if (dev->has_crop_cap) {
690 struct v4l2_rect min_r = {
691 0, 0,
692 compose->width / MAX_ZOOM,
693 factor * compose->height / MAX_ZOOM
694 };
695 struct v4l2_rect max_r = {
696 0, 0,
697 compose->width * MAX_ZOOM,
698 factor * compose->height * MAX_ZOOM
699 };
700
701 rect_set_min_size(crop, &min_r);
702 rect_set_max_size(crop, &max_r);
703 rect_map_inside(crop, &dev->crop_bounds_cap);
704 }
705 } else if (dev->has_crop_cap && !dev->has_compose_cap) {
706 r.height *= factor;
707 rect_set_size_to(crop, &r);
708 rect_map_inside(crop, &dev->crop_bounds_cap);
709 r = *crop;
710 r.height /= factor;
711 rect_set_size_to(compose, &r);
712 } else if (!dev->has_crop_cap) {
713 rect_map_inside(compose, &r);
714 } else {
715 r.height *= factor;
716 rect_set_max_size(crop, &r);
717 rect_map_inside(crop, &dev->crop_bounds_cap);
718 compose->top *= factor;
719 compose->height *= factor;
720 rect_set_size_to(compose, crop);
721 rect_map_inside(compose, &r);
722 compose->top /= factor;
723 compose->height /= factor;
724 }
725 } else if (vivid_is_webcam(dev)) {
726 /* Guaranteed to be a match */
727 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
728 if (webcam_sizes[i].width == mp->width &&
729 webcam_sizes[i].height == mp->height)
730 break;
731 dev->webcam_size_idx = i;
732 if (dev->webcam_ival_idx >= 2 * (VIVID_WEBCAM_SIZES - i))
733 dev->webcam_ival_idx = 2 * (VIVID_WEBCAM_SIZES - i) - 1;
734 vivid_update_format_cap(dev, false);
735 } else {
736 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
737
738 rect_set_size_to(compose, &r);
739 r.height *= factor;
740 rect_set_size_to(crop, &r);
741 }
742
743 dev->fmt_cap_rect.width = mp->width;
744 dev->fmt_cap_rect.height = mp->height;
745 tpg_s_buf_height(&dev->tpg, mp->height);
746 tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
747 for (p = 0; p < tpg_g_buffers(&dev->tpg); p++)
748 tpg_s_bytesperline(&dev->tpg, p, mp->plane_fmt[p].bytesperline);
749 dev->field_cap = mp->field;
750 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
751 tpg_s_field(&dev->tpg, V4L2_FIELD_TOP, true);
752 else
753 tpg_s_field(&dev->tpg, dev->field_cap, false);
754 tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
755 if (vivid_is_sdtv_cap(dev))
756 dev->tv_field_cap = mp->field;
757 tpg_update_mv_step(&dev->tpg);
758 return 0;
759 }
760
761 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
762 struct v4l2_format *f)
763 {
764 struct vivid_dev *dev = video_drvdata(file);
765
766 if (!dev->multiplanar)
767 return -ENOTTY;
768 return vivid_g_fmt_vid_cap(file, priv, f);
769 }
770
771 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
772 struct v4l2_format *f)
773 {
774 struct vivid_dev *dev = video_drvdata(file);
775
776 if (!dev->multiplanar)
777 return -ENOTTY;
778 return vivid_try_fmt_vid_cap(file, priv, f);
779 }
780
781 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
782 struct v4l2_format *f)
783 {
784 struct vivid_dev *dev = video_drvdata(file);
785
786 if (!dev->multiplanar)
787 return -ENOTTY;
788 return vivid_s_fmt_vid_cap(file, priv, f);
789 }
790
791 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
792 struct v4l2_format *f)
793 {
794 struct vivid_dev *dev = video_drvdata(file);
795
796 if (dev->multiplanar)
797 return -ENOTTY;
798 return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
799 }
800
801 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
802 struct v4l2_format *f)
803 {
804 struct vivid_dev *dev = video_drvdata(file);
805
806 if (dev->multiplanar)
807 return -ENOTTY;
808 return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
809 }
810
811 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
812 struct v4l2_format *f)
813 {
814 struct vivid_dev *dev = video_drvdata(file);
815
816 if (dev->multiplanar)
817 return -ENOTTY;
818 return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
819 }
820
821 int vivid_vid_cap_g_selection(struct file *file, void *priv,
822 struct v4l2_selection *sel)
823 {
824 struct vivid_dev *dev = video_drvdata(file);
825
826 if (!dev->has_crop_cap && !dev->has_compose_cap)
827 return -ENOTTY;
828 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
829 return -EINVAL;
830 if (vivid_is_webcam(dev))
831 return -EINVAL;
832
833 sel->r.left = sel->r.top = 0;
834 switch (sel->target) {
835 case V4L2_SEL_TGT_CROP:
836 if (!dev->has_crop_cap)
837 return -EINVAL;
838 sel->r = dev->crop_cap;
839 break;
840 case V4L2_SEL_TGT_CROP_DEFAULT:
841 case V4L2_SEL_TGT_CROP_BOUNDS:
842 if (!dev->has_crop_cap)
843 return -EINVAL;
844 sel->r = dev->src_rect;
845 break;
846 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
847 if (!dev->has_compose_cap)
848 return -EINVAL;
849 sel->r = vivid_max_rect;
850 break;
851 case V4L2_SEL_TGT_COMPOSE:
852 if (!dev->has_compose_cap)
853 return -EINVAL;
854 sel->r = dev->compose_cap;
855 break;
856 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
857 if (!dev->has_compose_cap)
858 return -EINVAL;
859 sel->r = dev->fmt_cap_rect;
860 break;
861 default:
862 return -EINVAL;
863 }
864 return 0;
865 }
866
867 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
868 {
869 struct vivid_dev *dev = video_drvdata(file);
870 struct v4l2_rect *crop = &dev->crop_cap;
871 struct v4l2_rect *compose = &dev->compose_cap;
872 unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
873 int ret;
874
875 if (!dev->has_crop_cap && !dev->has_compose_cap)
876 return -ENOTTY;
877 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
878 return -EINVAL;
879 if (vivid_is_webcam(dev))
880 return -EINVAL;
881
882 switch (s->target) {
883 case V4L2_SEL_TGT_CROP:
884 if (!dev->has_crop_cap)
885 return -EINVAL;
886 ret = vivid_vid_adjust_sel(s->flags, &s->r);
887 if (ret)
888 return ret;
889 rect_set_min_size(&s->r, &vivid_min_rect);
890 rect_set_max_size(&s->r, &dev->src_rect);
891 rect_map_inside(&s->r, &dev->crop_bounds_cap);
892 s->r.top /= factor;
893 s->r.height /= factor;
894 if (dev->has_scaler_cap) {
895 struct v4l2_rect fmt = dev->fmt_cap_rect;
896 struct v4l2_rect max_rect = {
897 0, 0,
898 s->r.width * MAX_ZOOM,
899 s->r.height * MAX_ZOOM
900 };
901 struct v4l2_rect min_rect = {
902 0, 0,
903 s->r.width / MAX_ZOOM,
904 s->r.height / MAX_ZOOM
905 };
906
907 rect_set_min_size(&fmt, &min_rect);
908 if (!dev->has_compose_cap)
909 rect_set_max_size(&fmt, &max_rect);
910 if (!rect_same_size(&dev->fmt_cap_rect, &fmt) &&
911 vb2_is_busy(&dev->vb_vid_cap_q))
912 return -EBUSY;
913 if (dev->has_compose_cap) {
914 rect_set_min_size(compose, &min_rect);
915 rect_set_max_size(compose, &max_rect);
916 }
917 dev->fmt_cap_rect = fmt;
918 tpg_s_buf_height(&dev->tpg, fmt.height);
919 } else if (dev->has_compose_cap) {
920 struct v4l2_rect fmt = dev->fmt_cap_rect;
921
922 rect_set_min_size(&fmt, &s->r);
923 if (!rect_same_size(&dev->fmt_cap_rect, &fmt) &&
924 vb2_is_busy(&dev->vb_vid_cap_q))
925 return -EBUSY;
926 dev->fmt_cap_rect = fmt;
927 tpg_s_buf_height(&dev->tpg, fmt.height);
928 rect_set_size_to(compose, &s->r);
929 rect_map_inside(compose, &dev->fmt_cap_rect);
930 } else {
931 if (!rect_same_size(&s->r, &dev->fmt_cap_rect) &&
932 vb2_is_busy(&dev->vb_vid_cap_q))
933 return -EBUSY;
934 rect_set_size_to(&dev->fmt_cap_rect, &s->r);
935 rect_set_size_to(compose, &s->r);
936 rect_map_inside(compose, &dev->fmt_cap_rect);
937 tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
938 }
939 s->r.top *= factor;
940 s->r.height *= factor;
941 *crop = s->r;
942 break;
943 case V4L2_SEL_TGT_COMPOSE:
944 if (!dev->has_compose_cap)
945 return -EINVAL;
946 ret = vivid_vid_adjust_sel(s->flags, &s->r);
947 if (ret)
948 return ret;
949 rect_set_min_size(&s->r, &vivid_min_rect);
950 rect_set_max_size(&s->r, &dev->fmt_cap_rect);
951 if (dev->has_scaler_cap) {
952 struct v4l2_rect max_rect = {
953 0, 0,
954 dev->src_rect.width * MAX_ZOOM,
955 (dev->src_rect.height / factor) * MAX_ZOOM
956 };
957
958 rect_set_max_size(&s->r, &max_rect);
959 if (dev->has_crop_cap) {
960 struct v4l2_rect min_rect = {
961 0, 0,
962 s->r.width / MAX_ZOOM,
963 (s->r.height * factor) / MAX_ZOOM
964 };
965 struct v4l2_rect max_rect = {
966 0, 0,
967 s->r.width * MAX_ZOOM,
968 (s->r.height * factor) * MAX_ZOOM
969 };
970
971 rect_set_min_size(crop, &min_rect);
972 rect_set_max_size(crop, &max_rect);
973 rect_map_inside(crop, &dev->crop_bounds_cap);
974 }
975 } else if (dev->has_crop_cap) {
976 s->r.top *= factor;
977 s->r.height *= factor;
978 rect_set_max_size(&s->r, &dev->src_rect);
979 rect_set_size_to(crop, &s->r);
980 rect_map_inside(crop, &dev->crop_bounds_cap);
981 s->r.top /= factor;
982 s->r.height /= factor;
983 } else {
984 rect_set_size_to(&s->r, &dev->src_rect);
985 s->r.height /= factor;
986 }
987 rect_map_inside(&s->r, &dev->fmt_cap_rect);
988 if (dev->bitmap_cap && (compose->width != s->r.width ||
989 compose->height != s->r.height)) {
990 kfree(dev->bitmap_cap);
991 dev->bitmap_cap = NULL;
992 }
993 *compose = s->r;
994 break;
995 default:
996 return -EINVAL;
997 }
998
999 tpg_s_crop_compose(&dev->tpg, crop, compose);
1000 return 0;
1001 }
1002
1003 int vivid_vid_cap_cropcap(struct file *file, void *priv,
1004 struct v4l2_cropcap *cap)
1005 {
1006 struct vivid_dev *dev = video_drvdata(file);
1007
1008 if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1009 return -EINVAL;
1010
1011 switch (vivid_get_pixel_aspect(dev)) {
1012 case TPG_PIXEL_ASPECT_NTSC:
1013 cap->pixelaspect.numerator = 11;
1014 cap->pixelaspect.denominator = 10;
1015 break;
1016 case TPG_PIXEL_ASPECT_PAL:
1017 cap->pixelaspect.numerator = 54;
1018 cap->pixelaspect.denominator = 59;
1019 break;
1020 case TPG_PIXEL_ASPECT_SQUARE:
1021 cap->pixelaspect.numerator = 1;
1022 cap->pixelaspect.denominator = 1;
1023 break;
1024 }
1025 return 0;
1026 }
1027
1028 int vidioc_enum_fmt_vid_overlay(struct file *file, void *priv,
1029 struct v4l2_fmtdesc *f)
1030 {
1031 struct vivid_dev *dev = video_drvdata(file);
1032 const struct vivid_fmt *fmt;
1033
1034 if (dev->multiplanar)
1035 return -ENOTTY;
1036
1037 if (f->index >= ARRAY_SIZE(formats_ovl))
1038 return -EINVAL;
1039
1040 fmt = &formats_ovl[f->index];
1041
1042 f->pixelformat = fmt->fourcc;
1043 return 0;
1044 }
1045
1046 int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
1047 struct v4l2_format *f)
1048 {
1049 struct vivid_dev *dev = video_drvdata(file);
1050 const struct v4l2_rect *compose = &dev->compose_cap;
1051 struct v4l2_window *win = &f->fmt.win;
1052 unsigned clipcount = win->clipcount;
1053
1054 if (dev->multiplanar)
1055 return -ENOTTY;
1056
1057 win->w.top = dev->overlay_cap_top;
1058 win->w.left = dev->overlay_cap_left;
1059 win->w.width = compose->width;
1060 win->w.height = compose->height;
1061 win->field = dev->overlay_cap_field;
1062 win->clipcount = dev->clipcount_cap;
1063 if (clipcount > dev->clipcount_cap)
1064 clipcount = dev->clipcount_cap;
1065 if (dev->bitmap_cap == NULL)
1066 win->bitmap = NULL;
1067 else if (win->bitmap) {
1068 if (copy_to_user(win->bitmap, dev->bitmap_cap,
1069 ((compose->width + 7) / 8) * compose->height))
1070 return -EFAULT;
1071 }
1072 if (clipcount && win->clips) {
1073 if (copy_to_user(win->clips, dev->clips_cap,
1074 clipcount * sizeof(dev->clips_cap[0])))
1075 return -EFAULT;
1076 }
1077 return 0;
1078 }
1079
1080 int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
1081 struct v4l2_format *f)
1082 {
1083 struct vivid_dev *dev = video_drvdata(file);
1084 const struct v4l2_rect *compose = &dev->compose_cap;
1085 struct v4l2_window *win = &f->fmt.win;
1086 int i, j;
1087
1088 if (dev->multiplanar)
1089 return -ENOTTY;
1090
1091 win->w.left = clamp_t(int, win->w.left,
1092 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1093 win->w.top = clamp_t(int, win->w.top,
1094 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1095 win->w.width = compose->width;
1096 win->w.height = compose->height;
1097 if (win->field != V4L2_FIELD_BOTTOM && win->field != V4L2_FIELD_TOP)
1098 win->field = V4L2_FIELD_ANY;
1099 win->chromakey = 0;
1100 win->global_alpha = 0;
1101 if (win->clipcount && !win->clips)
1102 win->clipcount = 0;
1103 if (win->clipcount > MAX_CLIPS)
1104 win->clipcount = MAX_CLIPS;
1105 if (win->clipcount) {
1106 if (copy_from_user(dev->try_clips_cap, win->clips,
1107 win->clipcount * sizeof(dev->clips_cap[0])))
1108 return -EFAULT;
1109 for (i = 0; i < win->clipcount; i++) {
1110 struct v4l2_rect *r = &dev->try_clips_cap[i].c;
1111
1112 r->top = clamp_t(s32, r->top, 0, dev->fb_cap.fmt.height - 1);
1113 r->height = clamp_t(s32, r->height, 1, dev->fb_cap.fmt.height - r->top);
1114 r->left = clamp_t(u32, r->left, 0, dev->fb_cap.fmt.width - 1);
1115 r->width = clamp_t(u32, r->width, 1, dev->fb_cap.fmt.width - r->left);
1116 }
1117 /*
1118 * Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
1119 * number and it's typically a one-time deal.
1120 */
1121 for (i = 0; i < win->clipcount - 1; i++) {
1122 struct v4l2_rect *r1 = &dev->try_clips_cap[i].c;
1123
1124 for (j = i + 1; j < win->clipcount; j++) {
1125 struct v4l2_rect *r2 = &dev->try_clips_cap[j].c;
1126
1127 if (rect_overlap(r1, r2))
1128 return -EINVAL;
1129 }
1130 }
1131 if (copy_to_user(win->clips, dev->try_clips_cap,
1132 win->clipcount * sizeof(dev->clips_cap[0])))
1133 return -EFAULT;
1134 }
1135 return 0;
1136 }
1137
1138 int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
1139 struct v4l2_format *f)
1140 {
1141 struct vivid_dev *dev = video_drvdata(file);
1142 const struct v4l2_rect *compose = &dev->compose_cap;
1143 struct v4l2_window *win = &f->fmt.win;
1144 int ret = vidioc_try_fmt_vid_overlay(file, priv, f);
1145 unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
1146 unsigned clips_size = win->clipcount * sizeof(dev->clips_cap[0]);
1147 void *new_bitmap = NULL;
1148
1149 if (ret)
1150 return ret;
1151
1152 if (win->bitmap) {
1153 new_bitmap = vzalloc(bitmap_size);
1154
1155 if (new_bitmap == NULL)
1156 return -ENOMEM;
1157 if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
1158 vfree(new_bitmap);
1159 return -EFAULT;
1160 }
1161 }
1162
1163 dev->overlay_cap_top = win->w.top;
1164 dev->overlay_cap_left = win->w.left;
1165 dev->overlay_cap_field = win->field;
1166 vfree(dev->bitmap_cap);
1167 dev->bitmap_cap = new_bitmap;
1168 dev->clipcount_cap = win->clipcount;
1169 if (dev->clipcount_cap)
1170 memcpy(dev->clips_cap, dev->try_clips_cap, clips_size);
1171 return 0;
1172 }
1173
1174 int vivid_vid_cap_overlay(struct file *file, void *fh, unsigned i)
1175 {
1176 struct vivid_dev *dev = video_drvdata(file);
1177
1178 if (dev->multiplanar)
1179 return -ENOTTY;
1180
1181 if (i && dev->fb_vbase_cap == NULL)
1182 return -EINVAL;
1183
1184 if (i && dev->fb_cap.fmt.pixelformat != dev->fmt_cap->fourcc) {
1185 dprintk(dev, 1, "mismatch between overlay and video capture pixelformats\n");
1186 return -EINVAL;
1187 }
1188
1189 if (dev->overlay_cap_owner && dev->overlay_cap_owner != fh)
1190 return -EBUSY;
1191 dev->overlay_cap_owner = i ? fh : NULL;
1192 return 0;
1193 }
1194
1195 int vivid_vid_cap_g_fbuf(struct file *file, void *fh,
1196 struct v4l2_framebuffer *a)
1197 {
1198 struct vivid_dev *dev = video_drvdata(file);
1199
1200 if (dev->multiplanar)
1201 return -ENOTTY;
1202
1203 *a = dev->fb_cap;
1204 a->capability = V4L2_FBUF_CAP_BITMAP_CLIPPING |
1205 V4L2_FBUF_CAP_LIST_CLIPPING;
1206 a->flags = V4L2_FBUF_FLAG_PRIMARY;
1207 a->fmt.field = V4L2_FIELD_NONE;
1208 a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1209 a->fmt.priv = 0;
1210 return 0;
1211 }
1212
1213 int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
1214 const struct v4l2_framebuffer *a)
1215 {
1216 struct vivid_dev *dev = video_drvdata(file);
1217 const struct vivid_fmt *fmt;
1218
1219 if (dev->multiplanar)
1220 return -ENOTTY;
1221
1222 if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1223 return -EPERM;
1224
1225 if (dev->overlay_cap_owner)
1226 return -EBUSY;
1227
1228 if (a->base == NULL) {
1229 dev->fb_cap.base = NULL;
1230 dev->fb_vbase_cap = NULL;
1231 return 0;
1232 }
1233
1234 if (a->fmt.width < 48 || a->fmt.height < 32)
1235 return -EINVAL;
1236 fmt = vivid_get_format(dev, a->fmt.pixelformat);
1237 if (!fmt || !fmt->can_do_overlay)
1238 return -EINVAL;
1239 if (a->fmt.bytesperline < (a->fmt.width * fmt->bit_depth[0]) / 8)
1240 return -EINVAL;
1241 if (a->fmt.height * a->fmt.bytesperline < a->fmt.sizeimage)
1242 return -EINVAL;
1243
1244 dev->fb_vbase_cap = phys_to_virt((unsigned long)a->base);
1245 dev->fb_cap = *a;
1246 dev->overlay_cap_left = clamp_t(int, dev->overlay_cap_left,
1247 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1248 dev->overlay_cap_top = clamp_t(int, dev->overlay_cap_top,
1249 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1250 return 0;
1251 }
1252
1253 static const struct v4l2_audio vivid_audio_inputs[] = {
1254 { 0, "TV", V4L2_AUDCAP_STEREO },
1255 { 1, "Line-In", V4L2_AUDCAP_STEREO },
1256 };
1257
1258 int vidioc_enum_input(struct file *file, void *priv,
1259 struct v4l2_input *inp)
1260 {
1261 struct vivid_dev *dev = video_drvdata(file);
1262
1263 if (inp->index >= dev->num_inputs)
1264 return -EINVAL;
1265
1266 inp->type = V4L2_INPUT_TYPE_CAMERA;
1267 switch (dev->input_type[inp->index]) {
1268 case WEBCAM:
1269 snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1270 dev->input_name_counter[inp->index]);
1271 inp->capabilities = 0;
1272 break;
1273 case TV:
1274 snprintf(inp->name, sizeof(inp->name), "TV %u",
1275 dev->input_name_counter[inp->index]);
1276 inp->type = V4L2_INPUT_TYPE_TUNER;
1277 inp->std = V4L2_STD_ALL;
1278 if (dev->has_audio_inputs)
1279 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1280 inp->capabilities = V4L2_IN_CAP_STD;
1281 break;
1282 case SVID:
1283 snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1284 dev->input_name_counter[inp->index]);
1285 inp->std = V4L2_STD_ALL;
1286 if (dev->has_audio_inputs)
1287 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1288 inp->capabilities = V4L2_IN_CAP_STD;
1289 break;
1290 case HDMI:
1291 snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1292 dev->input_name_counter[inp->index]);
1293 inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1294 if (dev->edid_blocks == 0 ||
1295 dev->dv_timings_signal_mode == NO_SIGNAL)
1296 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1297 else if (dev->dv_timings_signal_mode == NO_LOCK ||
1298 dev->dv_timings_signal_mode == OUT_OF_RANGE)
1299 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1300 break;
1301 }
1302 if (dev->sensor_hflip)
1303 inp->status |= V4L2_IN_ST_HFLIP;
1304 if (dev->sensor_vflip)
1305 inp->status |= V4L2_IN_ST_VFLIP;
1306 if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1307 if (dev->std_signal_mode == NO_SIGNAL) {
1308 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1309 } else if (dev->std_signal_mode == NO_LOCK) {
1310 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1311 } else if (vivid_is_tv_cap(dev)) {
1312 switch (tpg_g_quality(&dev->tpg)) {
1313 case TPG_QUAL_GRAY:
1314 inp->status |= V4L2_IN_ST_COLOR_KILL;
1315 break;
1316 case TPG_QUAL_NOISE:
1317 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1318 break;
1319 default:
1320 break;
1321 }
1322 }
1323 }
1324 return 0;
1325 }
1326
1327 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1328 {
1329 struct vivid_dev *dev = video_drvdata(file);
1330
1331 *i = dev->input;
1332 return 0;
1333 }
1334
1335 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1336 {
1337 struct vivid_dev *dev = video_drvdata(file);
1338 struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
1339 unsigned brightness;
1340
1341 if (i >= dev->num_inputs)
1342 return -EINVAL;
1343
1344 if (i == dev->input)
1345 return 0;
1346
1347 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1348 return -EBUSY;
1349
1350 dev->input = i;
1351 dev->vid_cap_dev.tvnorms = 0;
1352 if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1353 dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1354 dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1355 }
1356 dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1357 vivid_update_format_cap(dev, false);
1358
1359 if (dev->colorspace) {
1360 switch (dev->input_type[i]) {
1361 case WEBCAM:
1362 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1363 break;
1364 case TV:
1365 case SVID:
1366 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1367 break;
1368 case HDMI:
1369 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1370 if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1371 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1372 else
1373 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1374 } else {
1375 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1376 }
1377 break;
1378 }
1379 }
1380
1381 /*
1382 * Modify the brightness range depending on the input.
1383 * This makes it easy to use vivid to test if applications can
1384 * handle control range modifications and is also how this is
1385 * typically used in practice as different inputs may be hooked
1386 * up to different receivers with different control ranges.
1387 */
1388 brightness = 128 * i + dev->input_brightness[i];
1389 v4l2_ctrl_modify_range(dev->brightness,
1390 128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1391 v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1392 return 0;
1393 }
1394
1395 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1396 {
1397 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1398 return -EINVAL;
1399 *vin = vivid_audio_inputs[vin->index];
1400 return 0;
1401 }
1402
1403 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1404 {
1405 struct vivid_dev *dev = video_drvdata(file);
1406
1407 if (!vivid_is_sdtv_cap(dev))
1408 return -EINVAL;
1409 *vin = vivid_audio_inputs[dev->tv_audio_input];
1410 return 0;
1411 }
1412
1413 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1414 {
1415 struct vivid_dev *dev = video_drvdata(file);
1416
1417 if (!vivid_is_sdtv_cap(dev))
1418 return -EINVAL;
1419 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1420 return -EINVAL;
1421 dev->tv_audio_input = vin->index;
1422 return 0;
1423 }
1424
1425 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1426 {
1427 struct vivid_dev *dev = video_drvdata(file);
1428
1429 if (vf->tuner != 0)
1430 return -EINVAL;
1431 vf->frequency = dev->tv_freq;
1432 return 0;
1433 }
1434
1435 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1436 {
1437 struct vivid_dev *dev = video_drvdata(file);
1438
1439 if (vf->tuner != 0)
1440 return -EINVAL;
1441 dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1442 if (vivid_is_tv_cap(dev))
1443 vivid_update_quality(dev);
1444 return 0;
1445 }
1446
1447 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1448 {
1449 struct vivid_dev *dev = video_drvdata(file);
1450
1451 if (vt->index != 0)
1452 return -EINVAL;
1453 if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1454 return -EINVAL;
1455 dev->tv_audmode = vt->audmode;
1456 return 0;
1457 }
1458
1459 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1460 {
1461 struct vivid_dev *dev = video_drvdata(file);
1462 enum tpg_quality qual;
1463
1464 if (vt->index != 0)
1465 return -EINVAL;
1466
1467 vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1468 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1469 vt->audmode = dev->tv_audmode;
1470 vt->rangelow = MIN_TV_FREQ;
1471 vt->rangehigh = MAX_TV_FREQ;
1472 qual = vivid_get_quality(dev, &vt->afc);
1473 if (qual == TPG_QUAL_COLOR)
1474 vt->signal = 0xffff;
1475 else if (qual == TPG_QUAL_GRAY)
1476 vt->signal = 0x8000;
1477 else
1478 vt->signal = 0;
1479 if (qual == TPG_QUAL_NOISE) {
1480 vt->rxsubchans = 0;
1481 } else if (qual == TPG_QUAL_GRAY) {
1482 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1483 } else {
1484 unsigned channel_nr = dev->tv_freq / (6 * 16);
1485 unsigned options = (dev->std_cap & V4L2_STD_NTSC_M) ? 4 : 3;
1486
1487 switch (channel_nr % options) {
1488 case 0:
1489 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1490 break;
1491 case 1:
1492 vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1493 break;
1494 case 2:
1495 if (dev->std_cap & V4L2_STD_NTSC_M)
1496 vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1497 else
1498 vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1499 break;
1500 case 3:
1501 vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1502 break;
1503 }
1504 }
1505 strlcpy(vt->name, "TV Tuner", sizeof(vt->name));
1506 return 0;
1507 }
1508
1509 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1510 const v4l2_std_id vivid_standard[] = {
1511 V4L2_STD_NTSC_M,
1512 V4L2_STD_NTSC_M_JP,
1513 V4L2_STD_NTSC_M_KR,
1514 V4L2_STD_NTSC_443,
1515 V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1516 V4L2_STD_PAL_I,
1517 V4L2_STD_PAL_DK,
1518 V4L2_STD_PAL_M,
1519 V4L2_STD_PAL_N,
1520 V4L2_STD_PAL_Nc,
1521 V4L2_STD_PAL_60,
1522 V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1523 V4L2_STD_SECAM_DK,
1524 V4L2_STD_SECAM_L,
1525 V4L2_STD_SECAM_LC,
1526 V4L2_STD_UNKNOWN
1527 };
1528
1529 /* Must remain in sync with the vivid_standard array */
1530 const char * const vivid_ctrl_standard_strings[] = {
1531 "NTSC-M",
1532 "NTSC-M-JP",
1533 "NTSC-M-KR",
1534 "NTSC-443",
1535 "PAL-BGH",
1536 "PAL-I",
1537 "PAL-DK",
1538 "PAL-M",
1539 "PAL-N",
1540 "PAL-Nc",
1541 "PAL-60",
1542 "SECAM-BGH",
1543 "SECAM-DK",
1544 "SECAM-L",
1545 "SECAM-Lc",
1546 NULL,
1547 };
1548
1549 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1550 {
1551 struct vivid_dev *dev = video_drvdata(file);
1552
1553 if (!vivid_is_sdtv_cap(dev))
1554 return -ENODATA;
1555 if (dev->std_signal_mode == NO_SIGNAL ||
1556 dev->std_signal_mode == NO_LOCK) {
1557 *id = V4L2_STD_UNKNOWN;
1558 return 0;
1559 }
1560 if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1561 *id = V4L2_STD_UNKNOWN;
1562 } else if (dev->std_signal_mode == CURRENT_STD) {
1563 *id = dev->std_cap;
1564 } else if (dev->std_signal_mode == SELECTED_STD) {
1565 *id = dev->query_std;
1566 } else {
1567 *id = vivid_standard[dev->query_std_last];
1568 dev->query_std_last = (dev->query_std_last + 1) % ARRAY_SIZE(vivid_standard);
1569 }
1570
1571 return 0;
1572 }
1573
1574 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1575 {
1576 struct vivid_dev *dev = video_drvdata(file);
1577
1578 if (!vivid_is_sdtv_cap(dev))
1579 return -ENODATA;
1580 if (dev->std_cap == id)
1581 return 0;
1582 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1583 return -EBUSY;
1584 dev->std_cap = id;
1585 vivid_update_format_cap(dev, false);
1586 return 0;
1587 }
1588
1589 static void find_aspect_ratio(u32 width, u32 height,
1590 u32 *num, u32 *denom)
1591 {
1592 if (!(height % 3) && ((height * 4 / 3) == width)) {
1593 *num = 4;
1594 *denom = 3;
1595 } else if (!(height % 9) && ((height * 16 / 9) == width)) {
1596 *num = 16;
1597 *denom = 9;
1598 } else if (!(height % 10) && ((height * 16 / 10) == width)) {
1599 *num = 16;
1600 *denom = 10;
1601 } else if (!(height % 4) && ((height * 5 / 4) == width)) {
1602 *num = 5;
1603 *denom = 4;
1604 } else if (!(height % 9) && ((height * 15 / 9) == width)) {
1605 *num = 15;
1606 *denom = 9;
1607 } else { /* default to 16:9 */
1608 *num = 16;
1609 *denom = 9;
1610 }
1611 }
1612
1613 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1614 {
1615 struct v4l2_bt_timings *bt = &timings->bt;
1616 u32 total_h_pixel;
1617 u32 total_v_lines;
1618 u32 h_freq;
1619
1620 if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1621 NULL, NULL))
1622 return false;
1623
1624 total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1625 total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1626
1627 h_freq = (u32)bt->pixelclock / total_h_pixel;
1628
1629 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1630 if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1631 bt->polarities, bt->interlaced, timings))
1632 return true;
1633 }
1634
1635 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1636 struct v4l2_fract aspect_ratio;
1637
1638 find_aspect_ratio(bt->width, bt->height,
1639 &aspect_ratio.numerator,
1640 &aspect_ratio.denominator);
1641 if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1642 bt->polarities, bt->interlaced,
1643 aspect_ratio, timings))
1644 return true;
1645 }
1646 return false;
1647 }
1648
1649 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1650 struct v4l2_dv_timings *timings)
1651 {
1652 struct vivid_dev *dev = video_drvdata(file);
1653
1654 if (!vivid_is_hdmi_cap(dev))
1655 return -ENODATA;
1656 if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1657 0, NULL, NULL) &&
1658 !valid_cvt_gtf_timings(timings))
1659 return -EINVAL;
1660
1661 if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap, 0, false))
1662 return 0;
1663 if (vb2_is_busy(&dev->vb_vid_cap_q))
1664 return -EBUSY;
1665
1666 dev->dv_timings_cap = *timings;
1667 vivid_update_format_cap(dev, false);
1668 return 0;
1669 }
1670
1671 int vidioc_query_dv_timings(struct file *file, void *_fh,
1672 struct v4l2_dv_timings *timings)
1673 {
1674 struct vivid_dev *dev = video_drvdata(file);
1675
1676 if (!vivid_is_hdmi_cap(dev))
1677 return -ENODATA;
1678 if (dev->dv_timings_signal_mode == NO_SIGNAL ||
1679 dev->edid_blocks == 0)
1680 return -ENOLINK;
1681 if (dev->dv_timings_signal_mode == NO_LOCK)
1682 return -ENOLCK;
1683 if (dev->dv_timings_signal_mode == OUT_OF_RANGE) {
1684 timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1685 return -ERANGE;
1686 }
1687 if (dev->dv_timings_signal_mode == CURRENT_DV_TIMINGS) {
1688 *timings = dev->dv_timings_cap;
1689 } else if (dev->dv_timings_signal_mode == SELECTED_DV_TIMINGS) {
1690 *timings = v4l2_dv_timings_presets[dev->query_dv_timings];
1691 } else {
1692 *timings = v4l2_dv_timings_presets[dev->query_dv_timings_last];
1693 dev->query_dv_timings_last = (dev->query_dv_timings_last + 1) %
1694 dev->query_dv_timings_size;
1695 }
1696 return 0;
1697 }
1698
1699 int vidioc_s_edid(struct file *file, void *_fh,
1700 struct v4l2_edid *edid)
1701 {
1702 struct vivid_dev *dev = video_drvdata(file);
1703
1704 memset(edid->reserved, 0, sizeof(edid->reserved));
1705 if (edid->pad >= dev->num_inputs)
1706 return -EINVAL;
1707 if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1708 return -EINVAL;
1709 if (edid->blocks == 0) {
1710 dev->edid_blocks = 0;
1711 return 0;
1712 }
1713 if (edid->blocks > dev->edid_max_blocks) {
1714 edid->blocks = dev->edid_max_blocks;
1715 return -E2BIG;
1716 }
1717 dev->edid_blocks = edid->blocks;
1718 memcpy(dev->edid, edid->edid, edid->blocks * 128);
1719 return 0;
1720 }
1721
1722 int vidioc_enum_framesizes(struct file *file, void *fh,
1723 struct v4l2_frmsizeenum *fsize)
1724 {
1725 struct vivid_dev *dev = video_drvdata(file);
1726
1727 if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1728 return -EINVAL;
1729 if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1730 return -EINVAL;
1731 if (vivid_is_webcam(dev)) {
1732 if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1733 return -EINVAL;
1734 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1735 fsize->discrete = webcam_sizes[fsize->index];
1736 return 0;
1737 }
1738 if (fsize->index)
1739 return -EINVAL;
1740 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1741 fsize->stepwise.min_width = MIN_WIDTH;
1742 fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1743 fsize->stepwise.step_width = 2;
1744 fsize->stepwise.min_height = MIN_HEIGHT;
1745 fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1746 fsize->stepwise.step_height = 2;
1747 return 0;
1748 }
1749
1750 /* timeperframe is arbitrary and continuous */
1751 int vidioc_enum_frameintervals(struct file *file, void *priv,
1752 struct v4l2_frmivalenum *fival)
1753 {
1754 struct vivid_dev *dev = video_drvdata(file);
1755 const struct vivid_fmt *fmt;
1756 int i;
1757
1758 fmt = vivid_get_format(dev, fival->pixel_format);
1759 if (!fmt)
1760 return -EINVAL;
1761
1762 if (!vivid_is_webcam(dev)) {
1763 if (fival->index)
1764 return -EINVAL;
1765 if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1766 return -EINVAL;
1767 if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1768 return -EINVAL;
1769 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1770 fival->discrete = dev->timeperframe_vid_cap;
1771 return 0;
1772 }
1773
1774 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1775 if (fival->width == webcam_sizes[i].width &&
1776 fival->height == webcam_sizes[i].height)
1777 break;
1778 if (i == ARRAY_SIZE(webcam_sizes))
1779 return -EINVAL;
1780 if (fival->index >= 2 * (VIVID_WEBCAM_SIZES - i))
1781 return -EINVAL;
1782 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1783 fival->discrete = webcam_intervals[fival->index];
1784 return 0;
1785 }
1786
1787 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1788 struct v4l2_streamparm *parm)
1789 {
1790 struct vivid_dev *dev = video_drvdata(file);
1791
1792 if (parm->type != (dev->multiplanar ?
1793 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1794 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1795 return -EINVAL;
1796
1797 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1798 parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1799 parm->parm.capture.readbuffers = 1;
1800 return 0;
1801 }
1802
1803 #define FRACT_CMP(a, OP, b) \
1804 ((u64)(a).numerator * (b).denominator OP (u64)(b).numerator * (a).denominator)
1805
1806 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1807 struct v4l2_streamparm *parm)
1808 {
1809 struct vivid_dev *dev = video_drvdata(file);
1810 unsigned ival_sz = 2 * (VIVID_WEBCAM_SIZES - dev->webcam_size_idx);
1811 struct v4l2_fract tpf;
1812 unsigned i;
1813
1814 if (parm->type != (dev->multiplanar ?
1815 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1816 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1817 return -EINVAL;
1818 if (!vivid_is_webcam(dev))
1819 return vivid_vid_cap_g_parm(file, priv, parm);
1820
1821 tpf = parm->parm.capture.timeperframe;
1822
1823 if (tpf.denominator == 0)
1824 tpf = webcam_intervals[ival_sz - 1];
1825 for (i = 0; i < ival_sz; i++)
1826 if (FRACT_CMP(tpf, >=, webcam_intervals[i]))
1827 break;
1828 if (i == ival_sz)
1829 i = ival_sz - 1;
1830 dev->webcam_ival_idx = i;
1831 tpf = webcam_intervals[dev->webcam_ival_idx];
1832 tpf = FRACT_CMP(tpf, <, tpf_min) ? tpf_min : tpf;
1833 tpf = FRACT_CMP(tpf, >, tpf_max) ? tpf_max : tpf;
1834
1835 /* resync the thread's timings */
1836 dev->cap_seq_resync = true;
1837 dev->timeperframe_vid_cap = tpf;
1838 parm->parm.capture.timeperframe = tpf;
1839 parm->parm.capture.readbuffers = 1;
1840 return 0;
1841 }
Linux with added FPC-III support