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 .name = "RGB565 (LE)",
44 .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
45 .vdownsampling = { 1 },
46 .bit_depth = { 16 },
47 .planes = 1,
48 .buffers = 1,
49 },
50 {
51 .name = "XRGB555 (LE)",
52 .fourcc = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
53 .vdownsampling = { 1 },
54 .bit_depth = { 16 },
55 .planes = 1,
56 .buffers = 1,
57 },
58 {
59 .name = "ARGB555 (LE)",
60 .fourcc = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
61 .vdownsampling = { 1 },
62 .bit_depth = { 16 },
63 .planes = 1,
64 .buffers = 1,
65 },
66 };
67
68 /* The number of discrete webcam framesizes */
69 #define VIVID_WEBCAM_SIZES 3
70 /* The number of discrete webcam frameintervals */
71 #define VIVID_WEBCAM_IVALS (VIVID_WEBCAM_SIZES * 2)
72
73 /* Sizes must be in increasing order */
74 static const struct v4l2_frmsize_discrete webcam_sizes[VIVID_WEBCAM_SIZES] = {
75 { 320, 180 },
76 { 640, 360 },
77 { 1280, 720 },
78 };
79
80 /*
81 * Intervals must be in increasing order and there must be twice as many
82 * elements in this array as there are in webcam_sizes.
83 */
84 static const struct v4l2_fract webcam_intervals[VIVID_WEBCAM_IVALS] = {
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
vid_cap_queue_setup(struct vb2_queue * vq,const struct v4l2_format * fmt,unsigned * nbuffers,unsigned * nplanes,unsigned sizes[],void * alloc_ctxs[])98 static int vid_cap_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
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 (fmt) {
125 const struct v4l2_pix_format_mplane *mp;
126 struct v4l2_format mp_fmt;
127 const struct vivid_fmt *vfmt;
128
129 if (!V4L2_TYPE_IS_MULTIPLANAR(fmt->type)) {
130 fmt_sp2mp(fmt, &mp_fmt);
131 fmt = &mp_fmt;
132 }
133 mp = &fmt->fmt.pix_mp;
134 /*
135 * Check if the number of planes in the specified format match
136 * the number of buffers in the current format. You can't mix that.
137 */
138 if (mp->num_planes != buffers)
139 return -EINVAL;
140 vfmt = vivid_get_format(dev, mp->pixelformat);
141 for (p = 0; p < buffers; p++) {
142 sizes[p] = mp->plane_fmt[p].sizeimage;
143 if (sizes[p] < tpg_g_line_width(&dev->tpg, p) * h +
144 vfmt->data_offset[p])
145 return -EINVAL;
146 }
147 } else {
148 for (p = 0; p < buffers; p++)
149 sizes[p] = tpg_g_line_width(&dev->tpg, p) * h +
150 dev->fmt_cap->data_offset[p];
151 }
152
153 if (vq->num_buffers + *nbuffers < 2)
154 *nbuffers = 2 - vq->num_buffers;
155
156 *nplanes = buffers;
157
158 /*
159 * videobuf2-vmalloc allocator is context-less so no need to set
160 * alloc_ctxs array.
161 */
162
163 dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
164 for (p = 0; p < buffers; p++)
165 dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
166
167 return 0;
168 }
169
vid_cap_buf_prepare(struct vb2_buffer * vb)170 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
171 {
172 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
173 unsigned long size;
174 unsigned buffers = tpg_g_buffers(&dev->tpg);
175 unsigned p;
176
177 dprintk(dev, 1, "%s\n", __func__);
178
179 if (WARN_ON(NULL == dev->fmt_cap))
180 return -EINVAL;
181
182 if (dev->buf_prepare_error) {
183 /*
184 * Error injection: test what happens if buf_prepare() returns
185 * an error.
186 */
187 dev->buf_prepare_error = false;
188 return -EINVAL;
189 }
190 for (p = 0; p < buffers; p++) {
191 size = tpg_g_line_width(&dev->tpg, p) * dev->fmt_cap_rect.height +
192 dev->fmt_cap->data_offset[p];
193
194 if (vb2_plane_size(vb, p) < size) {
195 dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
196 __func__, p, vb2_plane_size(vb, p), size);
197 return -EINVAL;
198 }
199
200 vb2_set_plane_payload(vb, p, size);
201 vb->v4l2_planes[p].data_offset = dev->fmt_cap->data_offset[p];
202 }
203
204 return 0;
205 }
206
vid_cap_buf_finish(struct vb2_buffer * vb)207 static void vid_cap_buf_finish(struct vb2_buffer *vb)
208 {
209 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
210 struct v4l2_timecode *tc = &vb->v4l2_buf.timecode;
211 unsigned fps = 25;
212 unsigned seq = vb->v4l2_buf.sequence;
213
214 if (!vivid_is_sdtv_cap(dev))
215 return;
216
217 /*
218 * Set the timecode. Rarely used, so it is interesting to
219 * test this.
220 */
221 vb->v4l2_buf.flags |= V4L2_BUF_FLAG_TIMECODE;
222 if (dev->std_cap & V4L2_STD_525_60)
223 fps = 30;
224 tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
225 tc->flags = 0;
226 tc->frames = seq % fps;
227 tc->seconds = (seq / fps) % 60;
228 tc->minutes = (seq / (60 * fps)) % 60;
229 tc->hours = (seq / (60 * 60 * fps)) % 24;
230 }
231
vid_cap_buf_queue(struct vb2_buffer * vb)232 static void vid_cap_buf_queue(struct vb2_buffer *vb)
233 {
234 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
235 struct vivid_buffer *buf = container_of(vb, struct vivid_buffer, vb);
236
237 dprintk(dev, 1, "%s\n", __func__);
238
239 spin_lock(&dev->slock);
240 list_add_tail(&buf->list, &dev->vid_cap_active);
241 spin_unlock(&dev->slock);
242 }
243
vid_cap_start_streaming(struct vb2_queue * vq,unsigned count)244 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
245 {
246 struct vivid_dev *dev = vb2_get_drv_priv(vq);
247 unsigned i;
248 int err;
249
250 if (vb2_is_streaming(&dev->vb_vid_out_q))
251 dev->can_loop_video = vivid_vid_can_loop(dev);
252
253 if (dev->kthread_vid_cap)
254 return 0;
255
256 dev->vid_cap_seq_count = 0;
257 dprintk(dev, 1, "%s\n", __func__);
258 for (i = 0; i < VIDEO_MAX_FRAME; i++)
259 dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
260 if (dev->start_streaming_error) {
261 dev->start_streaming_error = false;
262 err = -EINVAL;
263 } else {
264 err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
265 }
266 if (err) {
267 struct vivid_buffer *buf, *tmp;
268
269 list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
270 list_del(&buf->list);
271 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
272 }
273 }
274 return err;
275 }
276
277 /* abort streaming and wait for last buffer */
vid_cap_stop_streaming(struct vb2_queue * vq)278 static void vid_cap_stop_streaming(struct vb2_queue *vq)
279 {
280 struct vivid_dev *dev = vb2_get_drv_priv(vq);
281
282 dprintk(dev, 1, "%s\n", __func__);
283 vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
284 dev->can_loop_video = false;
285 }
286
287 const struct vb2_ops vivid_vid_cap_qops = {
288 .queue_setup = vid_cap_queue_setup,
289 .buf_prepare = vid_cap_buf_prepare,
290 .buf_finish = vid_cap_buf_finish,
291 .buf_queue = vid_cap_buf_queue,
292 .start_streaming = vid_cap_start_streaming,
293 .stop_streaming = vid_cap_stop_streaming,
294 .wait_prepare = vb2_ops_wait_prepare,
295 .wait_finish = vb2_ops_wait_finish,
296 };
297
298 /*
299 * Determine the 'picture' quality based on the current TV frequency: either
300 * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
301 * signal or NOISE for no signal.
302 */
vivid_update_quality(struct vivid_dev * dev)303 void vivid_update_quality(struct vivid_dev *dev)
304 {
305 unsigned freq_modulus;
306
307 if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
308 /*
309 * The 'noise' will only be replaced by the actual video
310 * if the output video matches the input video settings.
311 */
312 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
313 return;
314 }
315 if (vivid_is_hdmi_cap(dev) && VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode)) {
316 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
317 return;
318 }
319 if (vivid_is_sdtv_cap(dev) && VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
320 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
321 return;
322 }
323 if (!vivid_is_tv_cap(dev)) {
324 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
325 return;
326 }
327
328 /*
329 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
330 * From +/- 0.25 MHz around the channel there is color, and from
331 * +/- 1 MHz there is grayscale (chroma is lost).
332 * Everywhere else it is just noise.
333 */
334 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
335 if (freq_modulus > 2 * 16) {
336 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
337 next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
338 return;
339 }
340 if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
341 tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
342 else
343 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
344 }
345
346 /*
347 * Get the current picture quality and the associated afc value.
348 */
vivid_get_quality(struct vivid_dev * dev,s32 * afc)349 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
350 {
351 unsigned freq_modulus;
352
353 if (afc)
354 *afc = 0;
355 if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
356 tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
357 return tpg_g_quality(&dev->tpg);
358
359 /*
360 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
361 * From +/- 0.25 MHz around the channel there is color, and from
362 * +/- 1 MHz there is grayscale (chroma is lost).
363 * Everywhere else it is just gray.
364 */
365 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
366 if (afc)
367 *afc = freq_modulus - 1 * 16;
368 return TPG_QUAL_GRAY;
369 }
370
vivid_get_video_aspect(const struct vivid_dev * dev)371 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
372 {
373 if (vivid_is_sdtv_cap(dev))
374 return dev->std_aspect_ratio;
375
376 if (vivid_is_hdmi_cap(dev))
377 return dev->dv_timings_aspect_ratio;
378
379 return TPG_VIDEO_ASPECT_IMAGE;
380 }
381
vivid_get_pixel_aspect(const struct vivid_dev * dev)382 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
383 {
384 if (vivid_is_sdtv_cap(dev))
385 return (dev->std_cap & V4L2_STD_525_60) ?
386 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
387
388 if (vivid_is_hdmi_cap(dev) &&
389 dev->src_rect.width == 720 && dev->src_rect.height <= 576)
390 return dev->src_rect.height == 480 ?
391 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
392
393 return TPG_PIXEL_ASPECT_SQUARE;
394 }
395
396 /*
397 * Called whenever the format has to be reset which can occur when
398 * changing inputs, standard, timings, etc.
399 */
vivid_update_format_cap(struct vivid_dev * dev,bool keep_controls)400 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
401 {
402 struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
403 unsigned size;
404
405 switch (dev->input_type[dev->input]) {
406 case WEBCAM:
407 default:
408 dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
409 dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
410 dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
411 dev->field_cap = V4L2_FIELD_NONE;
412 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
413 break;
414 case TV:
415 case SVID:
416 dev->field_cap = dev->tv_field_cap;
417 dev->src_rect.width = 720;
418 if (dev->std_cap & V4L2_STD_525_60) {
419 dev->src_rect.height = 480;
420 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
421 dev->service_set_cap = V4L2_SLICED_CAPTION_525;
422 } else {
423 dev->src_rect.height = 576;
424 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
425 dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
426 }
427 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
428 break;
429 case HDMI:
430 dev->src_rect.width = bt->width;
431 dev->src_rect.height = bt->height;
432 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
433 dev->timeperframe_vid_cap = (struct v4l2_fract) {
434 size / 100, (u32)bt->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 */
vivid_field_cap(struct vivid_dev * dev,enum v4l2_field field)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
vivid_colorspace_cap(struct vivid_dev * dev)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
vivid_ycbcr_enc_cap(struct vivid_dev * dev)504 static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
505 {
506 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
507 return tpg_g_ycbcr_enc(&dev->tpg);
508 return dev->ycbcr_enc_out;
509 }
510
vivid_quantization_cap(struct vivid_dev * dev)511 static unsigned vivid_quantization_cap(struct vivid_dev *dev)
512 {
513 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
514 return tpg_g_quantization(&dev->tpg);
515 return dev->quantization_out;
516 }
517
vivid_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)518 int vivid_g_fmt_vid_cap(struct file *file, void *priv,
519 struct v4l2_format *f)
520 {
521 struct vivid_dev *dev = video_drvdata(file);
522 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
523 unsigned p;
524
525 mp->width = dev->fmt_cap_rect.width;
526 mp->height = dev->fmt_cap_rect.height;
527 mp->field = dev->field_cap;
528 mp->pixelformat = dev->fmt_cap->fourcc;
529 mp->colorspace = vivid_colorspace_cap(dev);
530 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
531 mp->quantization = vivid_quantization_cap(dev);
532 mp->num_planes = dev->fmt_cap->buffers;
533 for (p = 0; p < mp->num_planes; p++) {
534 mp->plane_fmt[p].bytesperline = tpg_g_bytesperline(&dev->tpg, p);
535 mp->plane_fmt[p].sizeimage =
536 tpg_g_line_width(&dev->tpg, p) * mp->height +
537 dev->fmt_cap->data_offset[p];
538 }
539 return 0;
540 }
541
vivid_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)542 int vivid_try_fmt_vid_cap(struct file *file, void *priv,
543 struct v4l2_format *f)
544 {
545 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
546 struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
547 struct vivid_dev *dev = video_drvdata(file);
548 const struct vivid_fmt *fmt;
549 unsigned bytesperline, max_bpl;
550 unsigned factor = 1;
551 unsigned w, h;
552 unsigned p;
553
554 fmt = vivid_get_format(dev, mp->pixelformat);
555 if (!fmt) {
556 dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
557 mp->pixelformat);
558 mp->pixelformat = V4L2_PIX_FMT_YUYV;
559 fmt = vivid_get_format(dev, mp->pixelformat);
560 }
561
562 mp->field = vivid_field_cap(dev, mp->field);
563 if (vivid_is_webcam(dev)) {
564 const struct v4l2_frmsize_discrete *sz =
565 v4l2_find_nearest_format(&webcam_probe, mp->width, mp->height);
566
567 w = sz->width;
568 h = sz->height;
569 } else if (vivid_is_sdtv_cap(dev)) {
570 w = 720;
571 h = (dev->std_cap & V4L2_STD_525_60) ? 480 : 576;
572 } else {
573 w = dev->src_rect.width;
574 h = dev->src_rect.height;
575 }
576 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
577 factor = 2;
578 if (vivid_is_webcam(dev) ||
579 (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
580 mp->width = w;
581 mp->height = h / factor;
582 } else {
583 struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
584
585 rect_set_min_size(&r, &vivid_min_rect);
586 rect_set_max_size(&r, &vivid_max_rect);
587 if (dev->has_scaler_cap && !dev->has_compose_cap) {
588 struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
589
590 rect_set_max_size(&r, &max_r);
591 } else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
592 rect_set_max_size(&r, &dev->src_rect);
593 } else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
594 rect_set_min_size(&r, &dev->src_rect);
595 }
596 mp->width = r.width;
597 mp->height = r.height / factor;
598 }
599
600 /* This driver supports custom bytesperline values */
601
602 mp->num_planes = fmt->buffers;
603 for (p = 0; p < mp->num_planes; p++) {
604 /* Calculate the minimum supported bytesperline value */
605 bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
606 /* Calculate the maximum supported bytesperline value */
607 max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
608
609 if (pfmt[p].bytesperline > max_bpl)
610 pfmt[p].bytesperline = max_bpl;
611 if (pfmt[p].bytesperline < bytesperline)
612 pfmt[p].bytesperline = bytesperline;
613 pfmt[p].sizeimage = tpg_calc_line_width(&dev->tpg, p, pfmt[p].bytesperline) *
614 mp->height + fmt->data_offset[p];
615 memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
616 }
617 mp->colorspace = vivid_colorspace_cap(dev);
618 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
619 mp->quantization = vivid_quantization_cap(dev);
620 memset(mp->reserved, 0, sizeof(mp->reserved));
621 return 0;
622 }
623
vivid_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)624 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
625 struct v4l2_format *f)
626 {
627 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
628 struct vivid_dev *dev = video_drvdata(file);
629 struct v4l2_rect *crop = &dev->crop_cap;
630 struct v4l2_rect *compose = &dev->compose_cap;
631 struct vb2_queue *q = &dev->vb_vid_cap_q;
632 int ret = vivid_try_fmt_vid_cap(file, priv, f);
633 unsigned factor = 1;
634 unsigned p;
635 unsigned i;
636
637 if (ret < 0)
638 return ret;
639
640 if (vb2_is_busy(q)) {
641 dprintk(dev, 1, "%s device busy\n", __func__);
642 return -EBUSY;
643 }
644
645 if (dev->overlay_cap_owner && dev->fb_cap.fmt.pixelformat != mp->pixelformat) {
646 dprintk(dev, 1, "overlay is active, can't change pixelformat\n");
647 return -EBUSY;
648 }
649
650 dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
651 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
652 factor = 2;
653
654 /* Note: the webcam input doesn't support scaling, cropping or composing */
655
656 if (!vivid_is_webcam(dev) &&
657 (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
658 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
659
660 if (dev->has_scaler_cap) {
661 if (dev->has_compose_cap)
662 rect_map_inside(compose, &r);
663 else
664 *compose = r;
665 if (dev->has_crop_cap && !dev->has_compose_cap) {
666 struct v4l2_rect min_r = {
667 0, 0,
668 r.width / MAX_ZOOM,
669 factor * r.height / MAX_ZOOM
670 };
671 struct v4l2_rect max_r = {
672 0, 0,
673 r.width * MAX_ZOOM,
674 factor * r.height * MAX_ZOOM
675 };
676
677 rect_set_min_size(crop, &min_r);
678 rect_set_max_size(crop, &max_r);
679 rect_map_inside(crop, &dev->crop_bounds_cap);
680 } else if (dev->has_crop_cap) {
681 struct v4l2_rect min_r = {
682 0, 0,
683 compose->width / MAX_ZOOM,
684 factor * compose->height / MAX_ZOOM
685 };
686 struct v4l2_rect max_r = {
687 0, 0,
688 compose->width * MAX_ZOOM,
689 factor * compose->height * MAX_ZOOM
690 };
691
692 rect_set_min_size(crop, &min_r);
693 rect_set_max_size(crop, &max_r);
694 rect_map_inside(crop, &dev->crop_bounds_cap);
695 }
696 } else if (dev->has_crop_cap && !dev->has_compose_cap) {
697 r.height *= factor;
698 rect_set_size_to(crop, &r);
699 rect_map_inside(crop, &dev->crop_bounds_cap);
700 r = *crop;
701 r.height /= factor;
702 rect_set_size_to(compose, &r);
703 } else if (!dev->has_crop_cap) {
704 rect_map_inside(compose, &r);
705 } else {
706 r.height *= factor;
707 rect_set_max_size(crop, &r);
708 rect_map_inside(crop, &dev->crop_bounds_cap);
709 compose->top *= factor;
710 compose->height *= factor;
711 rect_set_size_to(compose, crop);
712 rect_map_inside(compose, &r);
713 compose->top /= factor;
714 compose->height /= factor;
715 }
716 } else if (vivid_is_webcam(dev)) {
717 /* Guaranteed to be a match */
718 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
719 if (webcam_sizes[i].width == mp->width &&
720 webcam_sizes[i].height == mp->height)
721 break;
722 dev->webcam_size_idx = i;
723 if (dev->webcam_ival_idx >= 2 * (3 - i))
724 dev->webcam_ival_idx = 2 * (3 - i) - 1;
725 vivid_update_format_cap(dev, false);
726 } else {
727 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
728
729 rect_set_size_to(compose, &r);
730 r.height *= factor;
731 rect_set_size_to(crop, &r);
732 }
733
734 dev->fmt_cap_rect.width = mp->width;
735 dev->fmt_cap_rect.height = mp->height;
736 tpg_s_buf_height(&dev->tpg, mp->height);
737 tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
738 for (p = 0; p < tpg_g_buffers(&dev->tpg); p++)
739 tpg_s_bytesperline(&dev->tpg, p, mp->plane_fmt[p].bytesperline);
740 dev->field_cap = mp->field;
741 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
742 tpg_s_field(&dev->tpg, V4L2_FIELD_TOP, true);
743 else
744 tpg_s_field(&dev->tpg, dev->field_cap, false);
745 tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
746 if (vivid_is_sdtv_cap(dev))
747 dev->tv_field_cap = mp->field;
748 tpg_update_mv_step(&dev->tpg);
749 return 0;
750 }
751
vidioc_g_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)752 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
753 struct v4l2_format *f)
754 {
755 struct vivid_dev *dev = video_drvdata(file);
756
757 if (!dev->multiplanar)
758 return -ENOTTY;
759 return vivid_g_fmt_vid_cap(file, priv, f);
760 }
761
vidioc_try_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)762 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
763 struct v4l2_format *f)
764 {
765 struct vivid_dev *dev = video_drvdata(file);
766
767 if (!dev->multiplanar)
768 return -ENOTTY;
769 return vivid_try_fmt_vid_cap(file, priv, f);
770 }
771
vidioc_s_fmt_vid_cap_mplane(struct file * file,void * priv,struct v4l2_format * f)772 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
773 struct v4l2_format *f)
774 {
775 struct vivid_dev *dev = video_drvdata(file);
776
777 if (!dev->multiplanar)
778 return -ENOTTY;
779 return vivid_s_fmt_vid_cap(file, priv, f);
780 }
781
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)782 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
783 struct v4l2_format *f)
784 {
785 struct vivid_dev *dev = video_drvdata(file);
786
787 if (dev->multiplanar)
788 return -ENOTTY;
789 return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
790 }
791
vidioc_try_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)792 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
793 struct v4l2_format *f)
794 {
795 struct vivid_dev *dev = video_drvdata(file);
796
797 if (dev->multiplanar)
798 return -ENOTTY;
799 return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
800 }
801
vidioc_s_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)802 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
803 struct v4l2_format *f)
804 {
805 struct vivid_dev *dev = video_drvdata(file);
806
807 if (dev->multiplanar)
808 return -ENOTTY;
809 return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
810 }
811
vivid_vid_cap_g_selection(struct file * file,void * priv,struct v4l2_selection * sel)812 int vivid_vid_cap_g_selection(struct file *file, void *priv,
813 struct v4l2_selection *sel)
814 {
815 struct vivid_dev *dev = video_drvdata(file);
816
817 if (!dev->has_crop_cap && !dev->has_compose_cap)
818 return -ENOTTY;
819 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
820 return -EINVAL;
821 if (vivid_is_webcam(dev))
822 return -EINVAL;
823
824 sel->r.left = sel->r.top = 0;
825 switch (sel->target) {
826 case V4L2_SEL_TGT_CROP:
827 if (!dev->has_crop_cap)
828 return -EINVAL;
829 sel->r = dev->crop_cap;
830 break;
831 case V4L2_SEL_TGT_CROP_DEFAULT:
832 case V4L2_SEL_TGT_CROP_BOUNDS:
833 if (!dev->has_crop_cap)
834 return -EINVAL;
835 sel->r = dev->src_rect;
836 break;
837 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
838 if (!dev->has_compose_cap)
839 return -EINVAL;
840 sel->r = vivid_max_rect;
841 break;
842 case V4L2_SEL_TGT_COMPOSE:
843 if (!dev->has_compose_cap)
844 return -EINVAL;
845 sel->r = dev->compose_cap;
846 break;
847 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
848 if (!dev->has_compose_cap)
849 return -EINVAL;
850 sel->r = dev->fmt_cap_rect;
851 break;
852 default:
853 return -EINVAL;
854 }
855 return 0;
856 }
857
vivid_vid_cap_s_selection(struct file * file,void * fh,struct v4l2_selection * s)858 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
859 {
860 struct vivid_dev *dev = video_drvdata(file);
861 struct v4l2_rect *crop = &dev->crop_cap;
862 struct v4l2_rect *compose = &dev->compose_cap;
863 unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
864 int ret;
865
866 if (!dev->has_crop_cap && !dev->has_compose_cap)
867 return -ENOTTY;
868 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
869 return -EINVAL;
870 if (vivid_is_webcam(dev))
871 return -EINVAL;
872
873 switch (s->target) {
874 case V4L2_SEL_TGT_CROP:
875 if (!dev->has_crop_cap)
876 return -EINVAL;
877 ret = vivid_vid_adjust_sel(s->flags, &s->r);
878 if (ret)
879 return ret;
880 rect_set_min_size(&s->r, &vivid_min_rect);
881 rect_set_max_size(&s->r, &dev->src_rect);
882 rect_map_inside(&s->r, &dev->crop_bounds_cap);
883 s->r.top /= factor;
884 s->r.height /= factor;
885 if (dev->has_scaler_cap) {
886 struct v4l2_rect fmt = dev->fmt_cap_rect;
887 struct v4l2_rect max_rect = {
888 0, 0,
889 s->r.width * MAX_ZOOM,
890 s->r.height * MAX_ZOOM
891 };
892 struct v4l2_rect min_rect = {
893 0, 0,
894 s->r.width / MAX_ZOOM,
895 s->r.height / MAX_ZOOM
896 };
897
898 rect_set_min_size(&fmt, &min_rect);
899 if (!dev->has_compose_cap)
900 rect_set_max_size(&fmt, &max_rect);
901 if (!rect_same_size(&dev->fmt_cap_rect, &fmt) &&
902 vb2_is_busy(&dev->vb_vid_cap_q))
903 return -EBUSY;
904 if (dev->has_compose_cap) {
905 rect_set_min_size(compose, &min_rect);
906 rect_set_max_size(compose, &max_rect);
907 }
908 dev->fmt_cap_rect = fmt;
909 tpg_s_buf_height(&dev->tpg, fmt.height);
910 } else if (dev->has_compose_cap) {
911 struct v4l2_rect fmt = dev->fmt_cap_rect;
912
913 rect_set_min_size(&fmt, &s->r);
914 if (!rect_same_size(&dev->fmt_cap_rect, &fmt) &&
915 vb2_is_busy(&dev->vb_vid_cap_q))
916 return -EBUSY;
917 dev->fmt_cap_rect = fmt;
918 tpg_s_buf_height(&dev->tpg, fmt.height);
919 rect_set_size_to(compose, &s->r);
920 rect_map_inside(compose, &dev->fmt_cap_rect);
921 } else {
922 if (!rect_same_size(&s->r, &dev->fmt_cap_rect) &&
923 vb2_is_busy(&dev->vb_vid_cap_q))
924 return -EBUSY;
925 rect_set_size_to(&dev->fmt_cap_rect, &s->r);
926 rect_set_size_to(compose, &s->r);
927 rect_map_inside(compose, &dev->fmt_cap_rect);
928 tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
929 }
930 s->r.top *= factor;
931 s->r.height *= factor;
932 *crop = s->r;
933 break;
934 case V4L2_SEL_TGT_COMPOSE:
935 if (!dev->has_compose_cap)
936 return -EINVAL;
937 ret = vivid_vid_adjust_sel(s->flags, &s->r);
938 if (ret)
939 return ret;
940 rect_set_min_size(&s->r, &vivid_min_rect);
941 rect_set_max_size(&s->r, &dev->fmt_cap_rect);
942 if (dev->has_scaler_cap) {
943 struct v4l2_rect max_rect = {
944 0, 0,
945 dev->src_rect.width * MAX_ZOOM,
946 (dev->src_rect.height / factor) * MAX_ZOOM
947 };
948
949 rect_set_max_size(&s->r, &max_rect);
950 if (dev->has_crop_cap) {
951 struct v4l2_rect min_rect = {
952 0, 0,
953 s->r.width / MAX_ZOOM,
954 (s->r.height * factor) / MAX_ZOOM
955 };
956 struct v4l2_rect max_rect = {
957 0, 0,
958 s->r.width * MAX_ZOOM,
959 (s->r.height * factor) * MAX_ZOOM
960 };
961
962 rect_set_min_size(crop, &min_rect);
963 rect_set_max_size(crop, &max_rect);
964 rect_map_inside(crop, &dev->crop_bounds_cap);
965 }
966 } else if (dev->has_crop_cap) {
967 s->r.top *= factor;
968 s->r.height *= factor;
969 rect_set_max_size(&s->r, &dev->src_rect);
970 rect_set_size_to(crop, &s->r);
971 rect_map_inside(crop, &dev->crop_bounds_cap);
972 s->r.top /= factor;
973 s->r.height /= factor;
974 } else {
975 rect_set_size_to(&s->r, &dev->src_rect);
976 s->r.height /= factor;
977 }
978 rect_map_inside(&s->r, &dev->fmt_cap_rect);
979 if (dev->bitmap_cap && (compose->width != s->r.width ||
980 compose->height != s->r.height)) {
981 kfree(dev->bitmap_cap);
982 dev->bitmap_cap = NULL;
983 }
984 *compose = s->r;
985 break;
986 default:
987 return -EINVAL;
988 }
989
990 tpg_s_crop_compose(&dev->tpg, crop, compose);
991 return 0;
992 }
993
vivid_vid_cap_cropcap(struct file * file,void * priv,struct v4l2_cropcap * cap)994 int vivid_vid_cap_cropcap(struct file *file, void *priv,
995 struct v4l2_cropcap *cap)
996 {
997 struct vivid_dev *dev = video_drvdata(file);
998
999 if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1000 return -EINVAL;
1001
1002 switch (vivid_get_pixel_aspect(dev)) {
1003 case TPG_PIXEL_ASPECT_NTSC:
1004 cap->pixelaspect.numerator = 11;
1005 cap->pixelaspect.denominator = 10;
1006 break;
1007 case TPG_PIXEL_ASPECT_PAL:
1008 cap->pixelaspect.numerator = 54;
1009 cap->pixelaspect.denominator = 59;
1010 break;
1011 case TPG_PIXEL_ASPECT_SQUARE:
1012 cap->pixelaspect.numerator = 1;
1013 cap->pixelaspect.denominator = 1;
1014 break;
1015 }
1016 return 0;
1017 }
1018
vidioc_enum_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_fmtdesc * f)1019 int vidioc_enum_fmt_vid_overlay(struct file *file, void *priv,
1020 struct v4l2_fmtdesc *f)
1021 {
1022 struct vivid_dev *dev = video_drvdata(file);
1023 const struct vivid_fmt *fmt;
1024
1025 if (dev->multiplanar)
1026 return -ENOTTY;
1027
1028 if (f->index >= ARRAY_SIZE(formats_ovl))
1029 return -EINVAL;
1030
1031 fmt = &formats_ovl[f->index];
1032
1033 strlcpy(f->description, fmt->name, sizeof(f->description));
1034 f->pixelformat = fmt->fourcc;
1035 return 0;
1036 }
1037
vidioc_g_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1038 int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
1039 struct v4l2_format *f)
1040 {
1041 struct vivid_dev *dev = video_drvdata(file);
1042 const struct v4l2_rect *compose = &dev->compose_cap;
1043 struct v4l2_window *win = &f->fmt.win;
1044 unsigned clipcount = win->clipcount;
1045
1046 if (dev->multiplanar)
1047 return -ENOTTY;
1048
1049 win->w.top = dev->overlay_cap_top;
1050 win->w.left = dev->overlay_cap_left;
1051 win->w.width = compose->width;
1052 win->w.height = compose->height;
1053 win->field = dev->overlay_cap_field;
1054 win->clipcount = dev->clipcount_cap;
1055 if (clipcount > dev->clipcount_cap)
1056 clipcount = dev->clipcount_cap;
1057 if (dev->bitmap_cap == NULL)
1058 win->bitmap = NULL;
1059 else if (win->bitmap) {
1060 if (copy_to_user(win->bitmap, dev->bitmap_cap,
1061 ((compose->width + 7) / 8) * compose->height))
1062 return -EFAULT;
1063 }
1064 if (clipcount && win->clips) {
1065 if (copy_to_user(win->clips, dev->clips_cap,
1066 clipcount * sizeof(dev->clips_cap[0])))
1067 return -EFAULT;
1068 }
1069 return 0;
1070 }
1071
vidioc_try_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1072 int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
1073 struct v4l2_format *f)
1074 {
1075 struct vivid_dev *dev = video_drvdata(file);
1076 const struct v4l2_rect *compose = &dev->compose_cap;
1077 struct v4l2_window *win = &f->fmt.win;
1078 int i, j;
1079
1080 if (dev->multiplanar)
1081 return -ENOTTY;
1082
1083 win->w.left = clamp_t(int, win->w.left,
1084 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1085 win->w.top = clamp_t(int, win->w.top,
1086 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1087 win->w.width = compose->width;
1088 win->w.height = compose->height;
1089 if (win->field != V4L2_FIELD_BOTTOM && win->field != V4L2_FIELD_TOP)
1090 win->field = V4L2_FIELD_ANY;
1091 win->chromakey = 0;
1092 win->global_alpha = 0;
1093 if (win->clipcount && !win->clips)
1094 win->clipcount = 0;
1095 if (win->clipcount > MAX_CLIPS)
1096 win->clipcount = MAX_CLIPS;
1097 if (win->clipcount) {
1098 if (copy_from_user(dev->try_clips_cap, win->clips,
1099 win->clipcount * sizeof(dev->clips_cap[0])))
1100 return -EFAULT;
1101 for (i = 0; i < win->clipcount; i++) {
1102 struct v4l2_rect *r = &dev->try_clips_cap[i].c;
1103
1104 r->top = clamp_t(s32, r->top, 0, dev->fb_cap.fmt.height - 1);
1105 r->height = clamp_t(s32, r->height, 1, dev->fb_cap.fmt.height - r->top);
1106 r->left = clamp_t(u32, r->left, 0, dev->fb_cap.fmt.width - 1);
1107 r->width = clamp_t(u32, r->width, 1, dev->fb_cap.fmt.width - r->left);
1108 }
1109 /*
1110 * Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
1111 * number and it's typically a one-time deal.
1112 */
1113 for (i = 0; i < win->clipcount - 1; i++) {
1114 struct v4l2_rect *r1 = &dev->try_clips_cap[i].c;
1115
1116 for (j = i + 1; j < win->clipcount; j++) {
1117 struct v4l2_rect *r2 = &dev->try_clips_cap[j].c;
1118
1119 if (rect_overlap(r1, r2))
1120 return -EINVAL;
1121 }
1122 }
1123 if (copy_to_user(win->clips, dev->try_clips_cap,
1124 win->clipcount * sizeof(dev->clips_cap[0])))
1125 return -EFAULT;
1126 }
1127 return 0;
1128 }
1129
vidioc_s_fmt_vid_overlay(struct file * file,void * priv,struct v4l2_format * f)1130 int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
1131 struct v4l2_format *f)
1132 {
1133 struct vivid_dev *dev = video_drvdata(file);
1134 const struct v4l2_rect *compose = &dev->compose_cap;
1135 struct v4l2_window *win = &f->fmt.win;
1136 int ret = vidioc_try_fmt_vid_overlay(file, priv, f);
1137 unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
1138 unsigned clips_size = win->clipcount * sizeof(dev->clips_cap[0]);
1139 void *new_bitmap = NULL;
1140
1141 if (ret)
1142 return ret;
1143
1144 if (win->bitmap) {
1145 new_bitmap = vzalloc(bitmap_size);
1146
1147 if (new_bitmap == NULL)
1148 return -ENOMEM;
1149 if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
1150 vfree(new_bitmap);
1151 return -EFAULT;
1152 }
1153 }
1154
1155 dev->overlay_cap_top = win->w.top;
1156 dev->overlay_cap_left = win->w.left;
1157 dev->overlay_cap_field = win->field;
1158 vfree(dev->bitmap_cap);
1159 dev->bitmap_cap = new_bitmap;
1160 dev->clipcount_cap = win->clipcount;
1161 if (dev->clipcount_cap)
1162 memcpy(dev->clips_cap, dev->try_clips_cap, clips_size);
1163 return 0;
1164 }
1165
vivid_vid_cap_overlay(struct file * file,void * fh,unsigned i)1166 int vivid_vid_cap_overlay(struct file *file, void *fh, unsigned i)
1167 {
1168 struct vivid_dev *dev = video_drvdata(file);
1169
1170 if (dev->multiplanar)
1171 return -ENOTTY;
1172
1173 if (i && dev->fb_vbase_cap == NULL)
1174 return -EINVAL;
1175
1176 if (i && dev->fb_cap.fmt.pixelformat != dev->fmt_cap->fourcc) {
1177 dprintk(dev, 1, "mismatch between overlay and video capture pixelformats\n");
1178 return -EINVAL;
1179 }
1180
1181 if (dev->overlay_cap_owner && dev->overlay_cap_owner != fh)
1182 return -EBUSY;
1183 dev->overlay_cap_owner = i ? fh : NULL;
1184 return 0;
1185 }
1186
vivid_vid_cap_g_fbuf(struct file * file,void * fh,struct v4l2_framebuffer * a)1187 int vivid_vid_cap_g_fbuf(struct file *file, void *fh,
1188 struct v4l2_framebuffer *a)
1189 {
1190 struct vivid_dev *dev = video_drvdata(file);
1191
1192 if (dev->multiplanar)
1193 return -ENOTTY;
1194
1195 *a = dev->fb_cap;
1196 a->capability = V4L2_FBUF_CAP_BITMAP_CLIPPING |
1197 V4L2_FBUF_CAP_LIST_CLIPPING;
1198 a->flags = V4L2_FBUF_FLAG_PRIMARY;
1199 a->fmt.field = V4L2_FIELD_NONE;
1200 a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1201 a->fmt.priv = 0;
1202 return 0;
1203 }
1204
vivid_vid_cap_s_fbuf(struct file * file,void * fh,const struct v4l2_framebuffer * a)1205 int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
1206 const struct v4l2_framebuffer *a)
1207 {
1208 struct vivid_dev *dev = video_drvdata(file);
1209 const struct vivid_fmt *fmt;
1210
1211 if (dev->multiplanar)
1212 return -ENOTTY;
1213
1214 if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1215 return -EPERM;
1216
1217 if (dev->overlay_cap_owner)
1218 return -EBUSY;
1219
1220 if (a->base == NULL) {
1221 dev->fb_cap.base = NULL;
1222 dev->fb_vbase_cap = NULL;
1223 return 0;
1224 }
1225
1226 if (a->fmt.width < 48 || a->fmt.height < 32)
1227 return -EINVAL;
1228 fmt = vivid_get_format(dev, a->fmt.pixelformat);
1229 if (!fmt || !fmt->can_do_overlay)
1230 return -EINVAL;
1231 if (a->fmt.bytesperline < (a->fmt.width * fmt->bit_depth[0]) / 8)
1232 return -EINVAL;
1233 if (a->fmt.height * a->fmt.bytesperline < a->fmt.sizeimage)
1234 return -EINVAL;
1235
1236 dev->fb_vbase_cap = phys_to_virt((unsigned long)a->base);
1237 dev->fb_cap = *a;
1238 dev->overlay_cap_left = clamp_t(int, dev->overlay_cap_left,
1239 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1240 dev->overlay_cap_top = clamp_t(int, dev->overlay_cap_top,
1241 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1242 return 0;
1243 }
1244
1245 static const struct v4l2_audio vivid_audio_inputs[] = {
1246 { 0, "TV", V4L2_AUDCAP_STEREO },
1247 { 1, "Line-In", V4L2_AUDCAP_STEREO },
1248 };
1249
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * inp)1250 int vidioc_enum_input(struct file *file, void *priv,
1251 struct v4l2_input *inp)
1252 {
1253 struct vivid_dev *dev = video_drvdata(file);
1254
1255 if (inp->index >= dev->num_inputs)
1256 return -EINVAL;
1257
1258 inp->type = V4L2_INPUT_TYPE_CAMERA;
1259 switch (dev->input_type[inp->index]) {
1260 case WEBCAM:
1261 snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1262 dev->input_name_counter[inp->index]);
1263 inp->capabilities = 0;
1264 break;
1265 case TV:
1266 snprintf(inp->name, sizeof(inp->name), "TV %u",
1267 dev->input_name_counter[inp->index]);
1268 inp->type = V4L2_INPUT_TYPE_TUNER;
1269 inp->std = V4L2_STD_ALL;
1270 if (dev->has_audio_inputs)
1271 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1272 inp->capabilities = V4L2_IN_CAP_STD;
1273 break;
1274 case SVID:
1275 snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1276 dev->input_name_counter[inp->index]);
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 HDMI:
1283 snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1284 dev->input_name_counter[inp->index]);
1285 inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1286 if (dev->edid_blocks == 0 ||
1287 dev->dv_timings_signal_mode == NO_SIGNAL)
1288 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1289 else if (dev->dv_timings_signal_mode == NO_LOCK ||
1290 dev->dv_timings_signal_mode == OUT_OF_RANGE)
1291 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1292 break;
1293 }
1294 if (dev->sensor_hflip)
1295 inp->status |= V4L2_IN_ST_HFLIP;
1296 if (dev->sensor_vflip)
1297 inp->status |= V4L2_IN_ST_VFLIP;
1298 if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1299 if (dev->std_signal_mode == NO_SIGNAL) {
1300 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1301 } else if (dev->std_signal_mode == NO_LOCK) {
1302 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1303 } else if (vivid_is_tv_cap(dev)) {
1304 switch (tpg_g_quality(&dev->tpg)) {
1305 case TPG_QUAL_GRAY:
1306 inp->status |= V4L2_IN_ST_COLOR_KILL;
1307 break;
1308 case TPG_QUAL_NOISE:
1309 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1310 break;
1311 default:
1312 break;
1313 }
1314 }
1315 }
1316 return 0;
1317 }
1318
vidioc_g_input(struct file * file,void * priv,unsigned * i)1319 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1320 {
1321 struct vivid_dev *dev = video_drvdata(file);
1322
1323 *i = dev->input;
1324 return 0;
1325 }
1326
vidioc_s_input(struct file * file,void * priv,unsigned i)1327 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1328 {
1329 struct vivid_dev *dev = video_drvdata(file);
1330 struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
1331 unsigned brightness;
1332
1333 if (i >= dev->num_inputs)
1334 return -EINVAL;
1335
1336 if (i == dev->input)
1337 return 0;
1338
1339 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1340 return -EBUSY;
1341
1342 dev->input = i;
1343 dev->vid_cap_dev.tvnorms = 0;
1344 if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1345 dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1346 dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1347 }
1348 dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1349 vivid_update_format_cap(dev, false);
1350
1351 if (dev->colorspace) {
1352 switch (dev->input_type[i]) {
1353 case WEBCAM:
1354 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1355 break;
1356 case TV:
1357 case SVID:
1358 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1359 break;
1360 case HDMI:
1361 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1362 if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1363 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1364 else
1365 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1366 } else {
1367 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1368 }
1369 break;
1370 }
1371 }
1372
1373 /*
1374 * Modify the brightness range depending on the input.
1375 * This makes it easy to use vivid to test if applications can
1376 * handle control range modifications and is also how this is
1377 * typically used in practice as different inputs may be hooked
1378 * up to different receivers with different control ranges.
1379 */
1380 brightness = 128 * i + dev->input_brightness[i];
1381 v4l2_ctrl_modify_range(dev->brightness,
1382 128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1383 v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1384 return 0;
1385 }
1386
vidioc_enumaudio(struct file * file,void * fh,struct v4l2_audio * vin)1387 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1388 {
1389 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1390 return -EINVAL;
1391 *vin = vivid_audio_inputs[vin->index];
1392 return 0;
1393 }
1394
vidioc_g_audio(struct file * file,void * fh,struct v4l2_audio * vin)1395 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1396 {
1397 struct vivid_dev *dev = video_drvdata(file);
1398
1399 if (!vivid_is_sdtv_cap(dev))
1400 return -EINVAL;
1401 *vin = vivid_audio_inputs[dev->tv_audio_input];
1402 return 0;
1403 }
1404
vidioc_s_audio(struct file * file,void * fh,const struct v4l2_audio * vin)1405 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1406 {
1407 struct vivid_dev *dev = video_drvdata(file);
1408
1409 if (!vivid_is_sdtv_cap(dev))
1410 return -EINVAL;
1411 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1412 return -EINVAL;
1413 dev->tv_audio_input = vin->index;
1414 return 0;
1415 }
1416
vivid_video_g_frequency(struct file * file,void * fh,struct v4l2_frequency * vf)1417 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1418 {
1419 struct vivid_dev *dev = video_drvdata(file);
1420
1421 if (vf->tuner != 0)
1422 return -EINVAL;
1423 vf->frequency = dev->tv_freq;
1424 return 0;
1425 }
1426
vivid_video_s_frequency(struct file * file,void * fh,const struct v4l2_frequency * vf)1427 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1428 {
1429 struct vivid_dev *dev = video_drvdata(file);
1430
1431 if (vf->tuner != 0)
1432 return -EINVAL;
1433 dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1434 if (vivid_is_tv_cap(dev))
1435 vivid_update_quality(dev);
1436 return 0;
1437 }
1438
vivid_video_s_tuner(struct file * file,void * fh,const struct v4l2_tuner * vt)1439 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1440 {
1441 struct vivid_dev *dev = video_drvdata(file);
1442
1443 if (vt->index != 0)
1444 return -EINVAL;
1445 if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1446 return -EINVAL;
1447 dev->tv_audmode = vt->audmode;
1448 return 0;
1449 }
1450
vivid_video_g_tuner(struct file * file,void * fh,struct v4l2_tuner * vt)1451 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1452 {
1453 struct vivid_dev *dev = video_drvdata(file);
1454 enum tpg_quality qual;
1455
1456 if (vt->index != 0)
1457 return -EINVAL;
1458
1459 vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1460 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1461 vt->audmode = dev->tv_audmode;
1462 vt->rangelow = MIN_TV_FREQ;
1463 vt->rangehigh = MAX_TV_FREQ;
1464 qual = vivid_get_quality(dev, &vt->afc);
1465 if (qual == TPG_QUAL_COLOR)
1466 vt->signal = 0xffff;
1467 else if (qual == TPG_QUAL_GRAY)
1468 vt->signal = 0x8000;
1469 else
1470 vt->signal = 0;
1471 if (qual == TPG_QUAL_NOISE) {
1472 vt->rxsubchans = 0;
1473 } else if (qual == TPG_QUAL_GRAY) {
1474 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1475 } else {
1476 unsigned channel_nr = dev->tv_freq / (6 * 16);
1477 unsigned options = (dev->std_cap & V4L2_STD_NTSC_M) ? 4 : 3;
1478
1479 switch (channel_nr % options) {
1480 case 0:
1481 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1482 break;
1483 case 1:
1484 vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1485 break;
1486 case 2:
1487 if (dev->std_cap & V4L2_STD_NTSC_M)
1488 vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1489 else
1490 vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1491 break;
1492 case 3:
1493 vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1494 break;
1495 }
1496 }
1497 strlcpy(vt->name, "TV Tuner", sizeof(vt->name));
1498 return 0;
1499 }
1500
1501 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1502 const v4l2_std_id vivid_standard[] = {
1503 V4L2_STD_NTSC_M,
1504 V4L2_STD_NTSC_M_JP,
1505 V4L2_STD_NTSC_M_KR,
1506 V4L2_STD_NTSC_443,
1507 V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1508 V4L2_STD_PAL_I,
1509 V4L2_STD_PAL_DK,
1510 V4L2_STD_PAL_M,
1511 V4L2_STD_PAL_N,
1512 V4L2_STD_PAL_Nc,
1513 V4L2_STD_PAL_60,
1514 V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1515 V4L2_STD_SECAM_DK,
1516 V4L2_STD_SECAM_L,
1517 V4L2_STD_SECAM_LC,
1518 V4L2_STD_UNKNOWN
1519 };
1520
1521 /* Must remain in sync with the vivid_standard array */
1522 const char * const vivid_ctrl_standard_strings[] = {
1523 "NTSC-M",
1524 "NTSC-M-JP",
1525 "NTSC-M-KR",
1526 "NTSC-443",
1527 "PAL-BGH",
1528 "PAL-I",
1529 "PAL-DK",
1530 "PAL-M",
1531 "PAL-N",
1532 "PAL-Nc",
1533 "PAL-60",
1534 "SECAM-BGH",
1535 "SECAM-DK",
1536 "SECAM-L",
1537 "SECAM-Lc",
1538 NULL,
1539 };
1540
vidioc_querystd(struct file * file,void * priv,v4l2_std_id * id)1541 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1542 {
1543 struct vivid_dev *dev = video_drvdata(file);
1544
1545 if (!vivid_is_sdtv_cap(dev))
1546 return -ENODATA;
1547 if (dev->std_signal_mode == NO_SIGNAL ||
1548 dev->std_signal_mode == NO_LOCK) {
1549 *id = V4L2_STD_UNKNOWN;
1550 return 0;
1551 }
1552 if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1553 *id = V4L2_STD_UNKNOWN;
1554 } else if (dev->std_signal_mode == CURRENT_STD) {
1555 *id = dev->std_cap;
1556 } else if (dev->std_signal_mode == SELECTED_STD) {
1557 *id = dev->query_std;
1558 } else {
1559 *id = vivid_standard[dev->query_std_last];
1560 dev->query_std_last = (dev->query_std_last + 1) % ARRAY_SIZE(vivid_standard);
1561 }
1562
1563 return 0;
1564 }
1565
vivid_vid_cap_s_std(struct file * file,void * priv,v4l2_std_id id)1566 int vivid_vid_cap_s_std(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_cap == id)
1573 return 0;
1574 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1575 return -EBUSY;
1576 dev->std_cap = id;
1577 vivid_update_format_cap(dev, false);
1578 return 0;
1579 }
1580
find_aspect_ratio(u32 width,u32 height,u32 * num,u32 * denom)1581 static void find_aspect_ratio(u32 width, u32 height,
1582 u32 *num, u32 *denom)
1583 {
1584 if (!(height % 3) && ((height * 4 / 3) == width)) {
1585 *num = 4;
1586 *denom = 3;
1587 } else if (!(height % 9) && ((height * 16 / 9) == width)) {
1588 *num = 16;
1589 *denom = 9;
1590 } else if (!(height % 10) && ((height * 16 / 10) == width)) {
1591 *num = 16;
1592 *denom = 10;
1593 } else if (!(height % 4) && ((height * 5 / 4) == width)) {
1594 *num = 5;
1595 *denom = 4;
1596 } else if (!(height % 9) && ((height * 15 / 9) == width)) {
1597 *num = 15;
1598 *denom = 9;
1599 } else { /* default to 16:9 */
1600 *num = 16;
1601 *denom = 9;
1602 }
1603 }
1604
valid_cvt_gtf_timings(struct v4l2_dv_timings * timings)1605 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1606 {
1607 struct v4l2_bt_timings *bt = &timings->bt;
1608 u32 total_h_pixel;
1609 u32 total_v_lines;
1610 u32 h_freq;
1611
1612 if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1613 NULL, NULL))
1614 return false;
1615
1616 total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1617 total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1618
1619 h_freq = (u32)bt->pixelclock / total_h_pixel;
1620
1621 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1622 if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync,
1623 bt->polarities, timings))
1624 return true;
1625 }
1626
1627 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1628 struct v4l2_fract aspect_ratio;
1629
1630 find_aspect_ratio(bt->width, bt->height,
1631 &aspect_ratio.numerator,
1632 &aspect_ratio.denominator);
1633 if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1634 bt->polarities, aspect_ratio, timings))
1635 return true;
1636 }
1637 return false;
1638 }
1639
vivid_vid_cap_s_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1640 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1641 struct v4l2_dv_timings *timings)
1642 {
1643 struct vivid_dev *dev = video_drvdata(file);
1644
1645 if (!vivid_is_hdmi_cap(dev))
1646 return -ENODATA;
1647 if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1648 0, NULL, NULL) &&
1649 !valid_cvt_gtf_timings(timings))
1650 return -EINVAL;
1651
1652 if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap, 0))
1653 return 0;
1654 if (vb2_is_busy(&dev->vb_vid_cap_q))
1655 return -EBUSY;
1656
1657 dev->dv_timings_cap = *timings;
1658 vivid_update_format_cap(dev, false);
1659 return 0;
1660 }
1661
vidioc_query_dv_timings(struct file * file,void * _fh,struct v4l2_dv_timings * timings)1662 int vidioc_query_dv_timings(struct file *file, void *_fh,
1663 struct v4l2_dv_timings *timings)
1664 {
1665 struct vivid_dev *dev = video_drvdata(file);
1666
1667 if (!vivid_is_hdmi_cap(dev))
1668 return -ENODATA;
1669 if (dev->dv_timings_signal_mode == NO_SIGNAL ||
1670 dev->edid_blocks == 0)
1671 return -ENOLINK;
1672 if (dev->dv_timings_signal_mode == NO_LOCK)
1673 return -ENOLCK;
1674 if (dev->dv_timings_signal_mode == OUT_OF_RANGE) {
1675 timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1676 return -ERANGE;
1677 }
1678 if (dev->dv_timings_signal_mode == CURRENT_DV_TIMINGS) {
1679 *timings = dev->dv_timings_cap;
1680 } else if (dev->dv_timings_signal_mode == SELECTED_DV_TIMINGS) {
1681 *timings = v4l2_dv_timings_presets[dev->query_dv_timings];
1682 } else {
1683 *timings = v4l2_dv_timings_presets[dev->query_dv_timings_last];
1684 dev->query_dv_timings_last = (dev->query_dv_timings_last + 1) %
1685 dev->query_dv_timings_size;
1686 }
1687 return 0;
1688 }
1689
vidioc_s_edid(struct file * file,void * _fh,struct v4l2_edid * edid)1690 int vidioc_s_edid(struct file *file, void *_fh,
1691 struct v4l2_edid *edid)
1692 {
1693 struct vivid_dev *dev = video_drvdata(file);
1694
1695 memset(edid->reserved, 0, sizeof(edid->reserved));
1696 if (edid->pad >= dev->num_inputs)
1697 return -EINVAL;
1698 if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1699 return -EINVAL;
1700 if (edid->blocks == 0) {
1701 dev->edid_blocks = 0;
1702 return 0;
1703 }
1704 if (edid->blocks > dev->edid_max_blocks) {
1705 edid->blocks = dev->edid_max_blocks;
1706 return -E2BIG;
1707 }
1708 dev->edid_blocks = edid->blocks;
1709 memcpy(dev->edid, edid->edid, edid->blocks * 128);
1710 return 0;
1711 }
1712
vidioc_enum_framesizes(struct file * file,void * fh,struct v4l2_frmsizeenum * fsize)1713 int vidioc_enum_framesizes(struct file *file, void *fh,
1714 struct v4l2_frmsizeenum *fsize)
1715 {
1716 struct vivid_dev *dev = video_drvdata(file);
1717
1718 if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1719 return -EINVAL;
1720 if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1721 return -EINVAL;
1722 if (vivid_is_webcam(dev)) {
1723 if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1724 return -EINVAL;
1725 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1726 fsize->discrete = webcam_sizes[fsize->index];
1727 return 0;
1728 }
1729 if (fsize->index)
1730 return -EINVAL;
1731 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1732 fsize->stepwise.min_width = MIN_WIDTH;
1733 fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1734 fsize->stepwise.step_width = 2;
1735 fsize->stepwise.min_height = MIN_HEIGHT;
1736 fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1737 fsize->stepwise.step_height = 2;
1738 return 0;
1739 }
1740
1741 /* timeperframe is arbitrary and continuous */
vidioc_enum_frameintervals(struct file * file,void * priv,struct v4l2_frmivalenum * fival)1742 int vidioc_enum_frameintervals(struct file *file, void *priv,
1743 struct v4l2_frmivalenum *fival)
1744 {
1745 struct vivid_dev *dev = video_drvdata(file);
1746 const struct vivid_fmt *fmt;
1747 int i;
1748
1749 fmt = vivid_get_format(dev, fival->pixel_format);
1750 if (!fmt)
1751 return -EINVAL;
1752
1753 if (!vivid_is_webcam(dev)) {
1754 if (fival->index)
1755 return -EINVAL;
1756 if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1757 return -EINVAL;
1758 if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1759 return -EINVAL;
1760 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1761 fival->discrete = dev->timeperframe_vid_cap;
1762 return 0;
1763 }
1764
1765 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1766 if (fival->width == webcam_sizes[i].width &&
1767 fival->height == webcam_sizes[i].height)
1768 break;
1769 if (i == ARRAY_SIZE(webcam_sizes))
1770 return -EINVAL;
1771 if (fival->index >= 2 * (3 - i))
1772 return -EINVAL;
1773 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1774 fival->discrete = webcam_intervals[fival->index];
1775 return 0;
1776 }
1777
vivid_vid_cap_g_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1778 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1779 struct v4l2_streamparm *parm)
1780 {
1781 struct vivid_dev *dev = video_drvdata(file);
1782
1783 if (parm->type != (dev->multiplanar ?
1784 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1785 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1786 return -EINVAL;
1787
1788 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1789 parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1790 parm->parm.capture.readbuffers = 1;
1791 return 0;
1792 }
1793
1794 #define FRACT_CMP(a, OP, b) \
1795 ((u64)(a).numerator * (b).denominator OP (u64)(b).numerator * (a).denominator)
1796
vivid_vid_cap_s_parm(struct file * file,void * priv,struct v4l2_streamparm * parm)1797 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1798 struct v4l2_streamparm *parm)
1799 {
1800 struct vivid_dev *dev = video_drvdata(file);
1801 unsigned ival_sz = 2 * (3 - dev->webcam_size_idx);
1802 struct v4l2_fract tpf;
1803 unsigned i;
1804
1805 if (parm->type != (dev->multiplanar ?
1806 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1807 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1808 return -EINVAL;
1809 if (!vivid_is_webcam(dev))
1810 return vivid_vid_cap_g_parm(file, priv, parm);
1811
1812 tpf = parm->parm.capture.timeperframe;
1813
1814 if (tpf.denominator == 0)
1815 tpf = webcam_intervals[ival_sz - 1];
1816 for (i = 0; i < ival_sz; i++)
1817 if (FRACT_CMP(tpf, >=, webcam_intervals[i]))
1818 break;
1819 if (i == ival_sz)
1820 i = ival_sz - 1;
1821 dev->webcam_ival_idx = i;
1822 tpf = webcam_intervals[dev->webcam_ival_idx];
1823 tpf = FRACT_CMP(tpf, <, tpf_min) ? tpf_min : tpf;
1824 tpf = FRACT_CMP(tpf, >, tpf_max) ? tpf_max : tpf;
1825
1826 /* resync the thread's timings */
1827 dev->cap_seq_resync = true;
1828 dev->timeperframe_vid_cap = tpf;
1829 parm->parm.capture.timeperframe = tpf;
1830 parm->parm.capture.readbuffers = 1;
1831 return 0;
1832 }
1833