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Merge branches 'timers-core-for-linus' and 'timers-urgent-for-linus' of git://git...
[linux/fpc-iii.git] / drivers / media / platform / vivid / vivid-vid-cap.c
blobef5412311b2fa057a9dc96f5f0f620ddfaa9f0ce
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, const void *parg,
99 unsigned *nbuffers, unsigned *nplanes,
100 unsigned sizes[], void *alloc_ctxs[])
101 {
102 const struct v4l2_format *fmt = parg;
103 struct vivid_dev *dev = vb2_get_drv_priv(vq);
104 unsigned buffers = tpg_g_buffers(&dev->tpg);
105 unsigned h = dev->fmt_cap_rect.height;
106 unsigned p;
107
108 if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
109 /*
110 * You cannot use read() with FIELD_ALTERNATE since the field
111 * information (TOP/BOTTOM) cannot be passed back to the user.
112 */
113 if (vb2_fileio_is_active(vq))
114 return -EINVAL;
115 }
116
117 if (dev->queue_setup_error) {
118 /*
119 * Error injection: test what happens if queue_setup() returns
120 * an error.
121 */
122 dev->queue_setup_error = false;
123 return -EINVAL;
124 }
125 if (fmt) {
126 const struct v4l2_pix_format_mplane *mp;
127 struct v4l2_format mp_fmt;
128 const struct vivid_fmt *vfmt;
129
130 if (!V4L2_TYPE_IS_MULTIPLANAR(fmt->type)) {
131 fmt_sp2mp(fmt, &mp_fmt);
132 fmt = &mp_fmt;
133 }
134 mp = &fmt->fmt.pix_mp;
135 /*
136 * Check if the number of planes in the specified format match
137 * the number of buffers in the current format. You can't mix that.
138 */
139 if (mp->num_planes != buffers)
140 return -EINVAL;
141 vfmt = vivid_get_format(dev, mp->pixelformat);
142 for (p = 0; p < buffers; p++) {
143 sizes[p] = mp->plane_fmt[p].sizeimage;
144 if (sizes[p] < tpg_g_line_width(&dev->tpg, p) * h +
145 vfmt->data_offset[p])
146 return -EINVAL;
147 }
148 } else {
149 for (p = 0; p < buffers; p++)
150 sizes[p] = tpg_g_line_width(&dev->tpg, p) * h +
151 dev->fmt_cap->data_offset[p];
152 }
153
154 if (vq->num_buffers + *nbuffers < 2)
155 *nbuffers = 2 - vq->num_buffers;
156
157 *nplanes = buffers;
158
159 /*
160 * videobuf2-vmalloc allocator is context-less so no need to set
161 * alloc_ctxs array.
162 */
163
164 dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
165 for (p = 0; p < buffers; p++)
166 dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
167
168 return 0;
169 }
170
171 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
172 {
173 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
174 unsigned long size;
175 unsigned buffers = tpg_g_buffers(&dev->tpg);
176 unsigned p;
177
178 dprintk(dev, 1, "%s\n", __func__);
179
180 if (WARN_ON(NULL == dev->fmt_cap))
181 return -EINVAL;
182
183 if (dev->buf_prepare_error) {
184 /*
185 * Error injection: test what happens if buf_prepare() returns
186 * an error.
187 */
188 dev->buf_prepare_error = false;
189 return -EINVAL;
190 }
191 for (p = 0; p < buffers; p++) {
192 size = tpg_g_line_width(&dev->tpg, p) * dev->fmt_cap_rect.height +
193 dev->fmt_cap->data_offset[p];
194
195 if (vb2_plane_size(vb, p) < size) {
196 dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
197 __func__, p, vb2_plane_size(vb, p), size);
198 return -EINVAL;
199 }
200
201 vb2_set_plane_payload(vb, p, size);
202 vb->planes[p].data_offset = dev->fmt_cap->data_offset[p];
203 }
204
205 return 0;
206 }
207
208 static void vid_cap_buf_finish(struct vb2_buffer *vb)
209 {
210 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
211 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
212 struct v4l2_timecode *tc = &vbuf->timecode;
213 unsigned fps = 25;
214 unsigned seq = vbuf->sequence;
215
216 if (!vivid_is_sdtv_cap(dev))
217 return;
218
219 /*
220 * Set the timecode. Rarely used, so it is interesting to
221 * test this.
222 */
223 vbuf->flags |= V4L2_BUF_FLAG_TIMECODE;
224 if (dev->std_cap & V4L2_STD_525_60)
225 fps = 30;
226 tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
227 tc->flags = 0;
228 tc->frames = seq % fps;
229 tc->seconds = (seq / fps) % 60;
230 tc->minutes = (seq / (60 * fps)) % 60;
231 tc->hours = (seq / (60 * 60 * fps)) % 24;
232 }
233
234 static void vid_cap_buf_queue(struct vb2_buffer *vb)
235 {
236 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
237 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
238 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
239
240 dprintk(dev, 1, "%s\n", __func__);
241
242 spin_lock(&dev->slock);
243 list_add_tail(&buf->list, &dev->vid_cap_active);
244 spin_unlock(&dev->slock);
245 }
246
247 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
248 {
249 struct vivid_dev *dev = vb2_get_drv_priv(vq);
250 unsigned i;
251 int err;
252
253 if (vb2_is_streaming(&dev->vb_vid_out_q))
254 dev->can_loop_video = vivid_vid_can_loop(dev);
255
256 if (dev->kthread_vid_cap)
257 return 0;
258
259 dev->vid_cap_seq_count = 0;
260 dprintk(dev, 1, "%s\n", __func__);
261 for (i = 0; i < VIDEO_MAX_FRAME; i++)
262 dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
263 if (dev->start_streaming_error) {
264 dev->start_streaming_error = false;
265 err = -EINVAL;
266 } else {
267 err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
268 }
269 if (err) {
270 struct vivid_buffer *buf, *tmp;
271
272 list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
273 list_del(&buf->list);
274 vb2_buffer_done(&buf->vb.vb2_buf,
275 VB2_BUF_STATE_QUEUED);
276 }
277 }
278 return err;
279 }
280
281 /* abort streaming and wait for last buffer */
282 static void vid_cap_stop_streaming(struct vb2_queue *vq)
283 {
284 struct vivid_dev *dev = vb2_get_drv_priv(vq);
285
286 dprintk(dev, 1, "%s\n", __func__);
287 vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
288 dev->can_loop_video = false;
289 }
290
291 const struct vb2_ops vivid_vid_cap_qops = {
292 .queue_setup = vid_cap_queue_setup,
293 .buf_prepare = vid_cap_buf_prepare,
294 .buf_finish = vid_cap_buf_finish,
295 .buf_queue = vid_cap_buf_queue,
296 .start_streaming = vid_cap_start_streaming,
297 .stop_streaming = vid_cap_stop_streaming,
298 .wait_prepare = vb2_ops_wait_prepare,
299 .wait_finish = vb2_ops_wait_finish,
300 };
301
302 /*
303 * Determine the 'picture' quality based on the current TV frequency: either
304 * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
305 * signal or NOISE for no signal.
306 */
307 void vivid_update_quality(struct vivid_dev *dev)
308 {
309 unsigned freq_modulus;
310
311 if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
312 /*
313 * The 'noise' will only be replaced by the actual video
314 * if the output video matches the input video settings.
315 */
316 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
317 return;
318 }
319 if (vivid_is_hdmi_cap(dev) && VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode)) {
320 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
321 return;
322 }
323 if (vivid_is_sdtv_cap(dev) && VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
324 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
325 return;
326 }
327 if (!vivid_is_tv_cap(dev)) {
328 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
329 return;
330 }
331
332 /*
333 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
334 * From +/- 0.25 MHz around the channel there is color, and from
335 * +/- 1 MHz there is grayscale (chroma is lost).
336 * Everywhere else it is just noise.
337 */
338 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
339 if (freq_modulus > 2 * 16) {
340 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
341 next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
342 return;
343 }
344 if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
345 tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
346 else
347 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
348 }
349
350 /*
351 * Get the current picture quality and the associated afc value.
352 */
353 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
354 {
355 unsigned freq_modulus;
356
357 if (afc)
358 *afc = 0;
359 if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
360 tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
361 return tpg_g_quality(&dev->tpg);
362
363 /*
364 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
365 * From +/- 0.25 MHz around the channel there is color, and from
366 * +/- 1 MHz there is grayscale (chroma is lost).
367 * Everywhere else it is just gray.
368 */
369 freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
370 if (afc)
371 *afc = freq_modulus - 1 * 16;
372 return TPG_QUAL_GRAY;
373 }
374
375 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
376 {
377 if (vivid_is_sdtv_cap(dev))
378 return dev->std_aspect_ratio;
379
380 if (vivid_is_hdmi_cap(dev))
381 return dev->dv_timings_aspect_ratio;
382
383 return TPG_VIDEO_ASPECT_IMAGE;
384 }
385
386 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
387 {
388 if (vivid_is_sdtv_cap(dev))
389 return (dev->std_cap & V4L2_STD_525_60) ?
390 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
391
392 if (vivid_is_hdmi_cap(dev) &&
393 dev->src_rect.width == 720 && dev->src_rect.height <= 576)
394 return dev->src_rect.height == 480 ?
395 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
396
397 return TPG_PIXEL_ASPECT_SQUARE;
398 }
399
400 /*
401 * Called whenever the format has to be reset which can occur when
402 * changing inputs, standard, timings, etc.
403 */
404 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
405 {
406 struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
407 unsigned size;
408
409 switch (dev->input_type[dev->input]) {
410 case WEBCAM:
411 default:
412 dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
413 dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
414 dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
415 dev->field_cap = V4L2_FIELD_NONE;
416 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
417 break;
418 case TV:
419 case SVID:
420 dev->field_cap = dev->tv_field_cap;
421 dev->src_rect.width = 720;
422 if (dev->std_cap & V4L2_STD_525_60) {
423 dev->src_rect.height = 480;
424 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
425 dev->service_set_cap = V4L2_SLICED_CAPTION_525;
426 } else {
427 dev->src_rect.height = 576;
428 dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
429 dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
430 }
431 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
432 break;
433 case HDMI:
434 dev->src_rect.width = bt->width;
435 dev->src_rect.height = bt->height;
436 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
437 dev->timeperframe_vid_cap = (struct v4l2_fract) {
438 size / 100, (u32)bt->pixelclock / 100
439 };
440 if (bt->interlaced)
441 dev->field_cap = V4L2_FIELD_ALTERNATE;
442 else
443 dev->field_cap = V4L2_FIELD_NONE;
444
445 /*
446 * We can be called from within s_ctrl, in that case we can't
447 * set/get controls. Luckily we don't need to in that case.
448 */
449 if (keep_controls || !dev->colorspace)
450 break;
451 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
452 if (bt->width == 720 && bt->height <= 576)
453 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
454 else
455 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
456 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
457 } else {
458 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
459 v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
460 }
461 tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
462 break;
463 }
464 vivid_update_quality(dev);
465 tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
466 dev->crop_cap = dev->src_rect;
467 dev->crop_bounds_cap = dev->src_rect;
468 dev->compose_cap = dev->crop_cap;
469 if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
470 dev->compose_cap.height /= 2;
471 dev->fmt_cap_rect = dev->compose_cap;
472 tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
473 tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
474 tpg_update_mv_step(&dev->tpg);
475 }
476
477 /* Map the field to something that is valid for the current input */
478 static enum v4l2_field vivid_field_cap(struct vivid_dev *dev, enum v4l2_field field)
479 {
480 if (vivid_is_sdtv_cap(dev)) {
481 switch (field) {
482 case V4L2_FIELD_INTERLACED_TB:
483 case V4L2_FIELD_INTERLACED_BT:
484 case V4L2_FIELD_SEQ_TB:
485 case V4L2_FIELD_SEQ_BT:
486 case V4L2_FIELD_TOP:
487 case V4L2_FIELD_BOTTOM:
488 case V4L2_FIELD_ALTERNATE:
489 return field;
490 case V4L2_FIELD_INTERLACED:
491 default:
492 return V4L2_FIELD_INTERLACED;
493 }
494 }
495 if (vivid_is_hdmi_cap(dev))
496 return dev->dv_timings_cap.bt.interlaced ? V4L2_FIELD_ALTERNATE :
497 V4L2_FIELD_NONE;
498 return V4L2_FIELD_NONE;
499 }
500
501 static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
502 {
503 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
504 return tpg_g_colorspace(&dev->tpg);
505 return dev->colorspace_out;
506 }
507
508 static unsigned vivid_xfer_func_cap(struct vivid_dev *dev)
509 {
510 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
511 return tpg_g_xfer_func(&dev->tpg);
512 return dev->xfer_func_out;
513 }
514
515 static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
516 {
517 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
518 return tpg_g_ycbcr_enc(&dev->tpg);
519 return dev->ycbcr_enc_out;
520 }
521
522 static unsigned vivid_quantization_cap(struct vivid_dev *dev)
523 {
524 if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
525 return tpg_g_quantization(&dev->tpg);
526 return dev->quantization_out;
527 }
528
529 int vivid_g_fmt_vid_cap(struct file *file, void *priv,
530 struct v4l2_format *f)
531 {
532 struct vivid_dev *dev = video_drvdata(file);
533 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
534 unsigned p;
535
536 mp->width = dev->fmt_cap_rect.width;
537 mp->height = dev->fmt_cap_rect.height;
538 mp->field = dev->field_cap;
539 mp->pixelformat = dev->fmt_cap->fourcc;
540 mp->colorspace = vivid_colorspace_cap(dev);
541 mp->xfer_func = vivid_xfer_func_cap(dev);
542 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
543 mp->quantization = vivid_quantization_cap(dev);
544 mp->num_planes = dev->fmt_cap->buffers;
545 for (p = 0; p < mp->num_planes; p++) {
546 mp->plane_fmt[p].bytesperline = tpg_g_bytesperline(&dev->tpg, p);
547 mp->plane_fmt[p].sizeimage =
548 tpg_g_line_width(&dev->tpg, p) * mp->height +
549 dev->fmt_cap->data_offset[p];
550 }
551 return 0;
552 }
553
554 int vivid_try_fmt_vid_cap(struct file *file, void *priv,
555 struct v4l2_format *f)
556 {
557 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
558 struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
559 struct vivid_dev *dev = video_drvdata(file);
560 const struct vivid_fmt *fmt;
561 unsigned bytesperline, max_bpl;
562 unsigned factor = 1;
563 unsigned w, h;
564 unsigned p;
565
566 fmt = vivid_get_format(dev, mp->pixelformat);
567 if (!fmt) {
568 dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
569 mp->pixelformat);
570 mp->pixelformat = V4L2_PIX_FMT_YUYV;
571 fmt = vivid_get_format(dev, mp->pixelformat);
572 }
573
574 mp->field = vivid_field_cap(dev, mp->field);
575 if (vivid_is_webcam(dev)) {
576 const struct v4l2_frmsize_discrete *sz =
577 v4l2_find_nearest_format(&webcam_probe, mp->width, mp->height);
578
579 w = sz->width;
580 h = sz->height;
581 } else if (vivid_is_sdtv_cap(dev)) {
582 w = 720;
583 h = (dev->std_cap & V4L2_STD_525_60) ? 480 : 576;
584 } else {
585 w = dev->src_rect.width;
586 h = dev->src_rect.height;
587 }
588 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
589 factor = 2;
590 if (vivid_is_webcam(dev) ||
591 (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
592 mp->width = w;
593 mp->height = h / factor;
594 } else {
595 struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
596
597 rect_set_min_size(&r, &vivid_min_rect);
598 rect_set_max_size(&r, &vivid_max_rect);
599 if (dev->has_scaler_cap && !dev->has_compose_cap) {
600 struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
601
602 rect_set_max_size(&r, &max_r);
603 } else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
604 rect_set_max_size(&r, &dev->src_rect);
605 } else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
606 rect_set_min_size(&r, &dev->src_rect);
607 }
608 mp->width = r.width;
609 mp->height = r.height / factor;
610 }
611
612 /* This driver supports custom bytesperline values */
613
614 mp->num_planes = fmt->buffers;
615 for (p = 0; p < mp->num_planes; p++) {
616 /* Calculate the minimum supported bytesperline value */
617 bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
618 /* Calculate the maximum supported bytesperline value */
619 max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
620
621 if (pfmt[p].bytesperline > max_bpl)
622 pfmt[p].bytesperline = max_bpl;
623 if (pfmt[p].bytesperline < bytesperline)
624 pfmt[p].bytesperline = bytesperline;
625 pfmt[p].sizeimage = tpg_calc_line_width(&dev->tpg, p, pfmt[p].bytesperline) *
626 mp->height + fmt->data_offset[p];
627 memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
628 }
629 mp->colorspace = vivid_colorspace_cap(dev);
630 mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
631 mp->xfer_func = vivid_xfer_func_cap(dev);
632 mp->quantization = vivid_quantization_cap(dev);
633 memset(mp->reserved, 0, sizeof(mp->reserved));
634 return 0;
635 }
636
637 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
638 struct v4l2_format *f)
639 {
640 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
641 struct vivid_dev *dev = video_drvdata(file);
642 struct v4l2_rect *crop = &dev->crop_cap;
643 struct v4l2_rect *compose = &dev->compose_cap;
644 struct vb2_queue *q = &dev->vb_vid_cap_q;
645 int ret = vivid_try_fmt_vid_cap(file, priv, f);
646 unsigned factor = 1;
647 unsigned p;
648 unsigned i;
649
650 if (ret < 0)
651 return ret;
652
653 if (vb2_is_busy(q)) {
654 dprintk(dev, 1, "%s device busy\n", __func__);
655 return -EBUSY;
656 }
657
658 if (dev->overlay_cap_owner && dev->fb_cap.fmt.pixelformat != mp->pixelformat) {
659 dprintk(dev, 1, "overlay is active, can't change pixelformat\n");
660 return -EBUSY;
661 }
662
663 dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
664 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
665 factor = 2;
666
667 /* Note: the webcam input doesn't support scaling, cropping or composing */
668
669 if (!vivid_is_webcam(dev) &&
670 (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
671 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
672
673 if (dev->has_scaler_cap) {
674 if (dev->has_compose_cap)
675 rect_map_inside(compose, &r);
676 else
677 *compose = r;
678 if (dev->has_crop_cap && !dev->has_compose_cap) {
679 struct v4l2_rect min_r = {
680 0, 0,
681 r.width / MAX_ZOOM,
682 factor * r.height / MAX_ZOOM
683 };
684 struct v4l2_rect max_r = {
685 0, 0,
686 r.width * MAX_ZOOM,
687 factor * r.height * MAX_ZOOM
688 };
689
690 rect_set_min_size(crop, &min_r);
691 rect_set_max_size(crop, &max_r);
692 rect_map_inside(crop, &dev->crop_bounds_cap);
693 } else if (dev->has_crop_cap) {
694 struct v4l2_rect min_r = {
695 0, 0,
696 compose->width / MAX_ZOOM,
697 factor * compose->height / MAX_ZOOM
698 };
699 struct v4l2_rect max_r = {
700 0, 0,
701 compose->width * MAX_ZOOM,
702 factor * compose->height * MAX_ZOOM
703 };
704
705 rect_set_min_size(crop, &min_r);
706 rect_set_max_size(crop, &max_r);
707 rect_map_inside(crop, &dev->crop_bounds_cap);
708 }
709 } else if (dev->has_crop_cap && !dev->has_compose_cap) {
710 r.height *= factor;
711 rect_set_size_to(crop, &r);
712 rect_map_inside(crop, &dev->crop_bounds_cap);
713 r = *crop;
714 r.height /= factor;
715 rect_set_size_to(compose, &r);
716 } else if (!dev->has_crop_cap) {
717 rect_map_inside(compose, &r);
718 } else {
719 r.height *= factor;
720 rect_set_max_size(crop, &r);
721 rect_map_inside(crop, &dev->crop_bounds_cap);
722 compose->top *= factor;
723 compose->height *= factor;
724 rect_set_size_to(compose, crop);
725 rect_map_inside(compose, &r);
726 compose->top /= factor;
727 compose->height /= factor;
728 }
729 } else if (vivid_is_webcam(dev)) {
730 /* Guaranteed to be a match */
731 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
732 if (webcam_sizes[i].width == mp->width &&
733 webcam_sizes[i].height == mp->height)
734 break;
735 dev->webcam_size_idx = i;
736 if (dev->webcam_ival_idx >= 2 * (VIVID_WEBCAM_SIZES - i))
737 dev->webcam_ival_idx = 2 * (VIVID_WEBCAM_SIZES - i) - 1;
738 vivid_update_format_cap(dev, false);
739 } else {
740 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
741
742 rect_set_size_to(compose, &r);
743 r.height *= factor;
744 rect_set_size_to(crop, &r);
745 }
746
747 dev->fmt_cap_rect.width = mp->width;
748 dev->fmt_cap_rect.height = mp->height;
749 tpg_s_buf_height(&dev->tpg, mp->height);
750 tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
751 for (p = 0; p < tpg_g_buffers(&dev->tpg); p++)
752 tpg_s_bytesperline(&dev->tpg, p, mp->plane_fmt[p].bytesperline);
753 dev->field_cap = mp->field;
754 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
755 tpg_s_field(&dev->tpg, V4L2_FIELD_TOP, true);
756 else
757 tpg_s_field(&dev->tpg, dev->field_cap, false);
758 tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
759 if (vivid_is_sdtv_cap(dev))
760 dev->tv_field_cap = mp->field;
761 tpg_update_mv_step(&dev->tpg);
762 return 0;
763 }
764
765 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
766 struct v4l2_format *f)
767 {
768 struct vivid_dev *dev = video_drvdata(file);
769
770 if (!dev->multiplanar)
771 return -ENOTTY;
772 return vivid_g_fmt_vid_cap(file, priv, f);
773 }
774
775 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
776 struct v4l2_format *f)
777 {
778 struct vivid_dev *dev = video_drvdata(file);
779
780 if (!dev->multiplanar)
781 return -ENOTTY;
782 return vivid_try_fmt_vid_cap(file, priv, f);
783 }
784
785 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
786 struct v4l2_format *f)
787 {
788 struct vivid_dev *dev = video_drvdata(file);
789
790 if (!dev->multiplanar)
791 return -ENOTTY;
792 return vivid_s_fmt_vid_cap(file, priv, f);
793 }
794
795 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
796 struct v4l2_format *f)
797 {
798 struct vivid_dev *dev = video_drvdata(file);
799
800 if (dev->multiplanar)
801 return -ENOTTY;
802 return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
803 }
804
805 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
806 struct v4l2_format *f)
807 {
808 struct vivid_dev *dev = video_drvdata(file);
809
810 if (dev->multiplanar)
811 return -ENOTTY;
812 return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
813 }
814
815 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
816 struct v4l2_format *f)
817 {
818 struct vivid_dev *dev = video_drvdata(file);
819
820 if (dev->multiplanar)
821 return -ENOTTY;
822 return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
823 }
824
825 int vivid_vid_cap_g_selection(struct file *file, void *priv,
826 struct v4l2_selection *sel)
827 {
828 struct vivid_dev *dev = video_drvdata(file);
829
830 if (!dev->has_crop_cap && !dev->has_compose_cap)
831 return -ENOTTY;
832 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
833 return -EINVAL;
834 if (vivid_is_webcam(dev))
835 return -EINVAL;
836
837 sel->r.left = sel->r.top = 0;
838 switch (sel->target) {
839 case V4L2_SEL_TGT_CROP:
840 if (!dev->has_crop_cap)
841 return -EINVAL;
842 sel->r = dev->crop_cap;
843 break;
844 case V4L2_SEL_TGT_CROP_DEFAULT:
845 case V4L2_SEL_TGT_CROP_BOUNDS:
846 if (!dev->has_crop_cap)
847 return -EINVAL;
848 sel->r = dev->src_rect;
849 break;
850 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
851 if (!dev->has_compose_cap)
852 return -EINVAL;
853 sel->r = vivid_max_rect;
854 break;
855 case V4L2_SEL_TGT_COMPOSE:
856 if (!dev->has_compose_cap)
857 return -EINVAL;
858 sel->r = dev->compose_cap;
859 break;
860 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
861 if (!dev->has_compose_cap)
862 return -EINVAL;
863 sel->r = dev->fmt_cap_rect;
864 break;
865 default:
866 return -EINVAL;
867 }
868 return 0;
869 }
870
871 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
872 {
873 struct vivid_dev *dev = video_drvdata(file);
874 struct v4l2_rect *crop = &dev->crop_cap;
875 struct v4l2_rect *compose = &dev->compose_cap;
876 unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
877 int ret;
878
879 if (!dev->has_crop_cap && !dev->has_compose_cap)
880 return -ENOTTY;
881 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
882 return -EINVAL;
883 if (vivid_is_webcam(dev))
884 return -EINVAL;
885
886 switch (s->target) {
887 case V4L2_SEL_TGT_CROP:
888 if (!dev->has_crop_cap)
889 return -EINVAL;
890 ret = vivid_vid_adjust_sel(s->flags, &s->r);
891 if (ret)
892 return ret;
893 rect_set_min_size(&s->r, &vivid_min_rect);
894 rect_set_max_size(&s->r, &dev->src_rect);
895 rect_map_inside(&s->r, &dev->crop_bounds_cap);
896 s->r.top /= factor;
897 s->r.height /= factor;
898 if (dev->has_scaler_cap) {
899 struct v4l2_rect fmt = dev->fmt_cap_rect;
900 struct v4l2_rect max_rect = {
901 0, 0,
902 s->r.width * MAX_ZOOM,
903 s->r.height * MAX_ZOOM
904 };
905 struct v4l2_rect min_rect = {
906 0, 0,
907 s->r.width / MAX_ZOOM,
908 s->r.height / MAX_ZOOM
909 };
910
911 rect_set_min_size(&fmt, &min_rect);
912 if (!dev->has_compose_cap)
913 rect_set_max_size(&fmt, &max_rect);
914 if (!rect_same_size(&dev->fmt_cap_rect, &fmt) &&
915 vb2_is_busy(&dev->vb_vid_cap_q))
916 return -EBUSY;
917 if (dev->has_compose_cap) {
918 rect_set_min_size(compose, &min_rect);
919 rect_set_max_size(compose, &max_rect);
920 }
921 dev->fmt_cap_rect = fmt;
922 tpg_s_buf_height(&dev->tpg, fmt.height);
923 } else if (dev->has_compose_cap) {
924 struct v4l2_rect fmt = dev->fmt_cap_rect;
925
926 rect_set_min_size(&fmt, &s->r);
927 if (!rect_same_size(&dev->fmt_cap_rect, &fmt) &&
928 vb2_is_busy(&dev->vb_vid_cap_q))
929 return -EBUSY;
930 dev->fmt_cap_rect = fmt;
931 tpg_s_buf_height(&dev->tpg, fmt.height);
932 rect_set_size_to(compose, &s->r);
933 rect_map_inside(compose, &dev->fmt_cap_rect);
934 } else {
935 if (!rect_same_size(&s->r, &dev->fmt_cap_rect) &&
936 vb2_is_busy(&dev->vb_vid_cap_q))
937 return -EBUSY;
938 rect_set_size_to(&dev->fmt_cap_rect, &s->r);
939 rect_set_size_to(compose, &s->r);
940 rect_map_inside(compose, &dev->fmt_cap_rect);
941 tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
942 }
943 s->r.top *= factor;
944 s->r.height *= factor;
945 *crop = s->r;
946 break;
947 case V4L2_SEL_TGT_COMPOSE:
948 if (!dev->has_compose_cap)
949 return -EINVAL;
950 ret = vivid_vid_adjust_sel(s->flags, &s->r);
951 if (ret)
952 return ret;
953 rect_set_min_size(&s->r, &vivid_min_rect);
954 rect_set_max_size(&s->r, &dev->fmt_cap_rect);
955 if (dev->has_scaler_cap) {
956 struct v4l2_rect max_rect = {
957 0, 0,
958 dev->src_rect.width * MAX_ZOOM,
959 (dev->src_rect.height / factor) * MAX_ZOOM
960 };
961
962 rect_set_max_size(&s->r, &max_rect);
963 if (dev->has_crop_cap) {
964 struct v4l2_rect min_rect = {
965 0, 0,
966 s->r.width / MAX_ZOOM,
967 (s->r.height * factor) / MAX_ZOOM
968 };
969 struct v4l2_rect max_rect = {
970 0, 0,
971 s->r.width * MAX_ZOOM,
972 (s->r.height * factor) * MAX_ZOOM
973 };
974
975 rect_set_min_size(crop, &min_rect);
976 rect_set_max_size(crop, &max_rect);
977 rect_map_inside(crop, &dev->crop_bounds_cap);
978 }
979 } else if (dev->has_crop_cap) {
980 s->r.top *= factor;
981 s->r.height *= factor;
982 rect_set_max_size(&s->r, &dev->src_rect);
983 rect_set_size_to(crop, &s->r);
984 rect_map_inside(crop, &dev->crop_bounds_cap);
985 s->r.top /= factor;
986 s->r.height /= factor;
987 } else {
988 rect_set_size_to(&s->r, &dev->src_rect);
989 s->r.height /= factor;
990 }
991 rect_map_inside(&s->r, &dev->fmt_cap_rect);
992 if (dev->bitmap_cap && (compose->width != s->r.width ||
993 compose->height != s->r.height)) {
994 kfree(dev->bitmap_cap);
995 dev->bitmap_cap = NULL;
996 }
997 *compose = s->r;
998 break;
999 default:
1000 return -EINVAL;
1001 }
1002
1003 tpg_s_crop_compose(&dev->tpg, crop, compose);
1004 return 0;
1005 }
1006
1007 int vivid_vid_cap_cropcap(struct file *file, void *priv,
1008 struct v4l2_cropcap *cap)
1009 {
1010 struct vivid_dev *dev = video_drvdata(file);
1011
1012 if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1013 return -EINVAL;
1014
1015 switch (vivid_get_pixel_aspect(dev)) {
1016 case TPG_PIXEL_ASPECT_NTSC:
1017 cap->pixelaspect.numerator = 11;
1018 cap->pixelaspect.denominator = 10;
1019 break;
1020 case TPG_PIXEL_ASPECT_PAL:
1021 cap->pixelaspect.numerator = 54;
1022 cap->pixelaspect.denominator = 59;
1023 break;
1024 case TPG_PIXEL_ASPECT_SQUARE:
1025 cap->pixelaspect.numerator = 1;
1026 cap->pixelaspect.denominator = 1;
1027 break;
1028 }
1029 return 0;
1030 }
1031
1032 int vidioc_enum_fmt_vid_overlay(struct file *file, void *priv,
1033 struct v4l2_fmtdesc *f)
1034 {
1035 struct vivid_dev *dev = video_drvdata(file);
1036 const struct vivid_fmt *fmt;
1037
1038 if (dev->multiplanar)
1039 return -ENOTTY;
1040
1041 if (f->index >= ARRAY_SIZE(formats_ovl))
1042 return -EINVAL;
1043
1044 fmt = &formats_ovl[f->index];
1045
1046 f->pixelformat = fmt->fourcc;
1047 return 0;
1048 }
1049
1050 int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
1051 struct v4l2_format *f)
1052 {
1053 struct vivid_dev *dev = video_drvdata(file);
1054 const struct v4l2_rect *compose = &dev->compose_cap;
1055 struct v4l2_window *win = &f->fmt.win;
1056 unsigned clipcount = win->clipcount;
1057
1058 if (dev->multiplanar)
1059 return -ENOTTY;
1060
1061 win->w.top = dev->overlay_cap_top;
1062 win->w.left = dev->overlay_cap_left;
1063 win->w.width = compose->width;
1064 win->w.height = compose->height;
1065 win->field = dev->overlay_cap_field;
1066 win->clipcount = dev->clipcount_cap;
1067 if (clipcount > dev->clipcount_cap)
1068 clipcount = dev->clipcount_cap;
1069 if (dev->bitmap_cap == NULL)
1070 win->bitmap = NULL;
1071 else if (win->bitmap) {
1072 if (copy_to_user(win->bitmap, dev->bitmap_cap,
1073 ((compose->width + 7) / 8) * compose->height))
1074 return -EFAULT;
1075 }
1076 if (clipcount && win->clips) {
1077 if (copy_to_user(win->clips, dev->clips_cap,
1078 clipcount * sizeof(dev->clips_cap[0])))
1079 return -EFAULT;
1080 }
1081 return 0;
1082 }
1083
1084 int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
1085 struct v4l2_format *f)
1086 {
1087 struct vivid_dev *dev = video_drvdata(file);
1088 const struct v4l2_rect *compose = &dev->compose_cap;
1089 struct v4l2_window *win = &f->fmt.win;
1090 int i, j;
1091
1092 if (dev->multiplanar)
1093 return -ENOTTY;
1094
1095 win->w.left = clamp_t(int, win->w.left,
1096 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1097 win->w.top = clamp_t(int, win->w.top,
1098 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1099 win->w.width = compose->width;
1100 win->w.height = compose->height;
1101 if (win->field != V4L2_FIELD_BOTTOM && win->field != V4L2_FIELD_TOP)
1102 win->field = V4L2_FIELD_ANY;
1103 win->chromakey = 0;
1104 win->global_alpha = 0;
1105 if (win->clipcount && !win->clips)
1106 win->clipcount = 0;
1107 if (win->clipcount > MAX_CLIPS)
1108 win->clipcount = MAX_CLIPS;
1109 if (win->clipcount) {
1110 if (copy_from_user(dev->try_clips_cap, win->clips,
1111 win->clipcount * sizeof(dev->clips_cap[0])))
1112 return -EFAULT;
1113 for (i = 0; i < win->clipcount; i++) {
1114 struct v4l2_rect *r = &dev->try_clips_cap[i].c;
1115
1116 r->top = clamp_t(s32, r->top, 0, dev->fb_cap.fmt.height - 1);
1117 r->height = clamp_t(s32, r->height, 1, dev->fb_cap.fmt.height - r->top);
1118 r->left = clamp_t(u32, r->left, 0, dev->fb_cap.fmt.width - 1);
1119 r->width = clamp_t(u32, r->width, 1, dev->fb_cap.fmt.width - r->left);
1120 }
1121 /*
1122 * Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
1123 * number and it's typically a one-time deal.
1124 */
1125 for (i = 0; i < win->clipcount - 1; i++) {
1126 struct v4l2_rect *r1 = &dev->try_clips_cap[i].c;
1127
1128 for (j = i + 1; j < win->clipcount; j++) {
1129 struct v4l2_rect *r2 = &dev->try_clips_cap[j].c;
1130
1131 if (rect_overlap(r1, r2))
1132 return -EINVAL;
1133 }
1134 }
1135 if (copy_to_user(win->clips, dev->try_clips_cap,
1136 win->clipcount * sizeof(dev->clips_cap[0])))
1137 return -EFAULT;
1138 }
1139 return 0;
1140 }
1141
1142 int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
1143 struct v4l2_format *f)
1144 {
1145 struct vivid_dev *dev = video_drvdata(file);
1146 const struct v4l2_rect *compose = &dev->compose_cap;
1147 struct v4l2_window *win = &f->fmt.win;
1148 int ret = vidioc_try_fmt_vid_overlay(file, priv, f);
1149 unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
1150 unsigned clips_size = win->clipcount * sizeof(dev->clips_cap[0]);
1151 void *new_bitmap = NULL;
1152
1153 if (ret)
1154 return ret;
1155
1156 if (win->bitmap) {
1157 new_bitmap = vzalloc(bitmap_size);
1158
1159 if (new_bitmap == NULL)
1160 return -ENOMEM;
1161 if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
1162 vfree(new_bitmap);
1163 return -EFAULT;
1164 }
1165 }
1166
1167 dev->overlay_cap_top = win->w.top;
1168 dev->overlay_cap_left = win->w.left;
1169 dev->overlay_cap_field = win->field;
1170 vfree(dev->bitmap_cap);
1171 dev->bitmap_cap = new_bitmap;
1172 dev->clipcount_cap = win->clipcount;
1173 if (dev->clipcount_cap)
1174 memcpy(dev->clips_cap, dev->try_clips_cap, clips_size);
1175 return 0;
1176 }
1177
1178 int vivid_vid_cap_overlay(struct file *file, void *fh, unsigned i)
1179 {
1180 struct vivid_dev *dev = video_drvdata(file);
1181
1182 if (dev->multiplanar)
1183 return -ENOTTY;
1184
1185 if (i && dev->fb_vbase_cap == NULL)
1186 return -EINVAL;
1187
1188 if (i && dev->fb_cap.fmt.pixelformat != dev->fmt_cap->fourcc) {
1189 dprintk(dev, 1, "mismatch between overlay and video capture pixelformats\n");
1190 return -EINVAL;
1191 }
1192
1193 if (dev->overlay_cap_owner && dev->overlay_cap_owner != fh)
1194 return -EBUSY;
1195 dev->overlay_cap_owner = i ? fh : NULL;
1196 return 0;
1197 }
1198
1199 int vivid_vid_cap_g_fbuf(struct file *file, void *fh,
1200 struct v4l2_framebuffer *a)
1201 {
1202 struct vivid_dev *dev = video_drvdata(file);
1203
1204 if (dev->multiplanar)
1205 return -ENOTTY;
1206
1207 *a = dev->fb_cap;
1208 a->capability = V4L2_FBUF_CAP_BITMAP_CLIPPING |
1209 V4L2_FBUF_CAP_LIST_CLIPPING;
1210 a->flags = V4L2_FBUF_FLAG_PRIMARY;
1211 a->fmt.field = V4L2_FIELD_NONE;
1212 a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1213 a->fmt.priv = 0;
1214 return 0;
1215 }
1216
1217 int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
1218 const struct v4l2_framebuffer *a)
1219 {
1220 struct vivid_dev *dev = video_drvdata(file);
1221 const struct vivid_fmt *fmt;
1222
1223 if (dev->multiplanar)
1224 return -ENOTTY;
1225
1226 if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1227 return -EPERM;
1228
1229 if (dev->overlay_cap_owner)
1230 return -EBUSY;
1231
1232 if (a->base == NULL) {
1233 dev->fb_cap.base = NULL;
1234 dev->fb_vbase_cap = NULL;
1235 return 0;
1236 }
1237
1238 if (a->fmt.width < 48 || a->fmt.height < 32)
1239 return -EINVAL;
1240 fmt = vivid_get_format(dev, a->fmt.pixelformat);
1241 if (!fmt || !fmt->can_do_overlay)
1242 return -EINVAL;
1243 if (a->fmt.bytesperline < (a->fmt.width * fmt->bit_depth[0]) / 8)
1244 return -EINVAL;
1245 if (a->fmt.height * a->fmt.bytesperline < a->fmt.sizeimage)
1246 return -EINVAL;
1247
1248 dev->fb_vbase_cap = phys_to_virt((unsigned long)a->base);
1249 dev->fb_cap = *a;
1250 dev->overlay_cap_left = clamp_t(int, dev->overlay_cap_left,
1251 -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1252 dev->overlay_cap_top = clamp_t(int, dev->overlay_cap_top,
1253 -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1254 return 0;
1255 }
1256
1257 static const struct v4l2_audio vivid_audio_inputs[] = {
1258 { 0, "TV", V4L2_AUDCAP_STEREO },
1259 { 1, "Line-In", V4L2_AUDCAP_STEREO },
1260 };
1261
1262 int vidioc_enum_input(struct file *file, void *priv,
1263 struct v4l2_input *inp)
1264 {
1265 struct vivid_dev *dev = video_drvdata(file);
1266
1267 if (inp->index >= dev->num_inputs)
1268 return -EINVAL;
1269
1270 inp->type = V4L2_INPUT_TYPE_CAMERA;
1271 switch (dev->input_type[inp->index]) {
1272 case WEBCAM:
1273 snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1274 dev->input_name_counter[inp->index]);
1275 inp->capabilities = 0;
1276 break;
1277 case TV:
1278 snprintf(inp->name, sizeof(inp->name), "TV %u",
1279 dev->input_name_counter[inp->index]);
1280 inp->type = V4L2_INPUT_TYPE_TUNER;
1281 inp->std = V4L2_STD_ALL;
1282 if (dev->has_audio_inputs)
1283 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1284 inp->capabilities = V4L2_IN_CAP_STD;
1285 break;
1286 case SVID:
1287 snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1288 dev->input_name_counter[inp->index]);
1289 inp->std = V4L2_STD_ALL;
1290 if (dev->has_audio_inputs)
1291 inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1292 inp->capabilities = V4L2_IN_CAP_STD;
1293 break;
1294 case HDMI:
1295 snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1296 dev->input_name_counter[inp->index]);
1297 inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1298 if (dev->edid_blocks == 0 ||
1299 dev->dv_timings_signal_mode == NO_SIGNAL)
1300 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1301 else if (dev->dv_timings_signal_mode == NO_LOCK ||
1302 dev->dv_timings_signal_mode == OUT_OF_RANGE)
1303 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1304 break;
1305 }
1306 if (dev->sensor_hflip)
1307 inp->status |= V4L2_IN_ST_HFLIP;
1308 if (dev->sensor_vflip)
1309 inp->status |= V4L2_IN_ST_VFLIP;
1310 if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1311 if (dev->std_signal_mode == NO_SIGNAL) {
1312 inp->status |= V4L2_IN_ST_NO_SIGNAL;
1313 } else if (dev->std_signal_mode == NO_LOCK) {
1314 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1315 } else if (vivid_is_tv_cap(dev)) {
1316 switch (tpg_g_quality(&dev->tpg)) {
1317 case TPG_QUAL_GRAY:
1318 inp->status |= V4L2_IN_ST_COLOR_KILL;
1319 break;
1320 case TPG_QUAL_NOISE:
1321 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1322 break;
1323 default:
1324 break;
1325 }
1326 }
1327 }
1328 return 0;
1329 }
1330
1331 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1332 {
1333 struct vivid_dev *dev = video_drvdata(file);
1334
1335 *i = dev->input;
1336 return 0;
1337 }
1338
1339 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1340 {
1341 struct vivid_dev *dev = video_drvdata(file);
1342 struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
1343 unsigned brightness;
1344
1345 if (i >= dev->num_inputs)
1346 return -EINVAL;
1347
1348 if (i == dev->input)
1349 return 0;
1350
1351 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1352 return -EBUSY;
1353
1354 dev->input = i;
1355 dev->vid_cap_dev.tvnorms = 0;
1356 if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1357 dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1358 dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1359 }
1360 dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1361 vivid_update_format_cap(dev, false);
1362
1363 if (dev->colorspace) {
1364 switch (dev->input_type[i]) {
1365 case WEBCAM:
1366 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1367 break;
1368 case TV:
1369 case SVID:
1370 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1371 break;
1372 case HDMI:
1373 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1374 if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1375 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1376 else
1377 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1378 } else {
1379 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1380 }
1381 break;
1382 }
1383 }
1384
1385 /*
1386 * Modify the brightness range depending on the input.
1387 * This makes it easy to use vivid to test if applications can
1388 * handle control range modifications and is also how this is
1389 * typically used in practice as different inputs may be hooked
1390 * up to different receivers with different control ranges.
1391 */
1392 brightness = 128 * i + dev->input_brightness[i];
1393 v4l2_ctrl_modify_range(dev->brightness,
1394 128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1395 v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1396 return 0;
1397 }
1398
1399 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1400 {
1401 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1402 return -EINVAL;
1403 *vin = vivid_audio_inputs[vin->index];
1404 return 0;
1405 }
1406
1407 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1408 {
1409 struct vivid_dev *dev = video_drvdata(file);
1410
1411 if (!vivid_is_sdtv_cap(dev))
1412 return -EINVAL;
1413 *vin = vivid_audio_inputs[dev->tv_audio_input];
1414 return 0;
1415 }
1416
1417 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1418 {
1419 struct vivid_dev *dev = video_drvdata(file);
1420
1421 if (!vivid_is_sdtv_cap(dev))
1422 return -EINVAL;
1423 if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1424 return -EINVAL;
1425 dev->tv_audio_input = vin->index;
1426 return 0;
1427 }
1428
1429 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1430 {
1431 struct vivid_dev *dev = video_drvdata(file);
1432
1433 if (vf->tuner != 0)
1434 return -EINVAL;
1435 vf->frequency = dev->tv_freq;
1436 return 0;
1437 }
1438
1439 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1440 {
1441 struct vivid_dev *dev = video_drvdata(file);
1442
1443 if (vf->tuner != 0)
1444 return -EINVAL;
1445 dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1446 if (vivid_is_tv_cap(dev))
1447 vivid_update_quality(dev);
1448 return 0;
1449 }
1450
1451 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1452 {
1453 struct vivid_dev *dev = video_drvdata(file);
1454
1455 if (vt->index != 0)
1456 return -EINVAL;
1457 if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1458 return -EINVAL;
1459 dev->tv_audmode = vt->audmode;
1460 return 0;
1461 }
1462
1463 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1464 {
1465 struct vivid_dev *dev = video_drvdata(file);
1466 enum tpg_quality qual;
1467
1468 if (vt->index != 0)
1469 return -EINVAL;
1470
1471 vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1472 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1473 vt->audmode = dev->tv_audmode;
1474 vt->rangelow = MIN_TV_FREQ;
1475 vt->rangehigh = MAX_TV_FREQ;
1476 qual = vivid_get_quality(dev, &vt->afc);
1477 if (qual == TPG_QUAL_COLOR)
1478 vt->signal = 0xffff;
1479 else if (qual == TPG_QUAL_GRAY)
1480 vt->signal = 0x8000;
1481 else
1482 vt->signal = 0;
1483 if (qual == TPG_QUAL_NOISE) {
1484 vt->rxsubchans = 0;
1485 } else if (qual == TPG_QUAL_GRAY) {
1486 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1487 } else {
1488 unsigned channel_nr = dev->tv_freq / (6 * 16);
1489 unsigned options = (dev->std_cap & V4L2_STD_NTSC_M) ? 4 : 3;
1490
1491 switch (channel_nr % options) {
1492 case 0:
1493 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1494 break;
1495 case 1:
1496 vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1497 break;
1498 case 2:
1499 if (dev->std_cap & V4L2_STD_NTSC_M)
1500 vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1501 else
1502 vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1503 break;
1504 case 3:
1505 vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1506 break;
1507 }
1508 }
1509 strlcpy(vt->name, "TV Tuner", sizeof(vt->name));
1510 return 0;
1511 }
1512
1513 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1514 const v4l2_std_id vivid_standard[] = {
1515 V4L2_STD_NTSC_M,
1516 V4L2_STD_NTSC_M_JP,
1517 V4L2_STD_NTSC_M_KR,
1518 V4L2_STD_NTSC_443,
1519 V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1520 V4L2_STD_PAL_I,
1521 V4L2_STD_PAL_DK,
1522 V4L2_STD_PAL_M,
1523 V4L2_STD_PAL_N,
1524 V4L2_STD_PAL_Nc,
1525 V4L2_STD_PAL_60,
1526 V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1527 V4L2_STD_SECAM_DK,
1528 V4L2_STD_SECAM_L,
1529 V4L2_STD_SECAM_LC,
1530 V4L2_STD_UNKNOWN
1531 };
1532
1533 /* Must remain in sync with the vivid_standard array */
1534 const char * const vivid_ctrl_standard_strings[] = {
1535 "NTSC-M",
1536 "NTSC-M-JP",
1537 "NTSC-M-KR",
1538 "NTSC-443",
1539 "PAL-BGH",
1540 "PAL-I",
1541 "PAL-DK",
1542 "PAL-M",
1543 "PAL-N",
1544 "PAL-Nc",
1545 "PAL-60",
1546 "SECAM-BGH",
1547 "SECAM-DK",
1548 "SECAM-L",
1549 "SECAM-Lc",
1550 NULL,
1551 };
1552
1553 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1554 {
1555 struct vivid_dev *dev = video_drvdata(file);
1556
1557 if (!vivid_is_sdtv_cap(dev))
1558 return -ENODATA;
1559 if (dev->std_signal_mode == NO_SIGNAL ||
1560 dev->std_signal_mode == NO_LOCK) {
1561 *id = V4L2_STD_UNKNOWN;
1562 return 0;
1563 }
1564 if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1565 *id = V4L2_STD_UNKNOWN;
1566 } else if (dev->std_signal_mode == CURRENT_STD) {
1567 *id = dev->std_cap;
1568 } else if (dev->std_signal_mode == SELECTED_STD) {
1569 *id = dev->query_std;
1570 } else {
1571 *id = vivid_standard[dev->query_std_last];
1572 dev->query_std_last = (dev->query_std_last + 1) % ARRAY_SIZE(vivid_standard);
1573 }
1574
1575 return 0;
1576 }
1577
1578 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1579 {
1580 struct vivid_dev *dev = video_drvdata(file);
1581
1582 if (!vivid_is_sdtv_cap(dev))
1583 return -ENODATA;
1584 if (dev->std_cap == id)
1585 return 0;
1586 if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1587 return -EBUSY;
1588 dev->std_cap = id;
1589 vivid_update_format_cap(dev, false);
1590 return 0;
1591 }
1592
1593 static void find_aspect_ratio(u32 width, u32 height,
1594 u32 *num, u32 *denom)
1595 {
1596 if (!(height % 3) && ((height * 4 / 3) == width)) {
1597 *num = 4;
1598 *denom = 3;
1599 } else if (!(height % 9) && ((height * 16 / 9) == width)) {
1600 *num = 16;
1601 *denom = 9;
1602 } else if (!(height % 10) && ((height * 16 / 10) == width)) {
1603 *num = 16;
1604 *denom = 10;
1605 } else if (!(height % 4) && ((height * 5 / 4) == width)) {
1606 *num = 5;
1607 *denom = 4;
1608 } else if (!(height % 9) && ((height * 15 / 9) == width)) {
1609 *num = 15;
1610 *denom = 9;
1611 } else { /* default to 16:9 */
1612 *num = 16;
1613 *denom = 9;
1614 }
1615 }
1616
1617 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1618 {
1619 struct v4l2_bt_timings *bt = &timings->bt;
1620 u32 total_h_pixel;
1621 u32 total_v_lines;
1622 u32 h_freq;
1623
1624 if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1625 NULL, NULL))
1626 return false;
1627
1628 total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1629 total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1630
1631 h_freq = (u32)bt->pixelclock / total_h_pixel;
1632
1633 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1634 if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1635 bt->polarities, bt->interlaced, timings))
1636 return true;
1637 }
1638
1639 if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1640 struct v4l2_fract aspect_ratio;
1641
1642 find_aspect_ratio(bt->width, bt->height,
1643 &aspect_ratio.numerator,
1644 &aspect_ratio.denominator);
1645 if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1646 bt->polarities, bt->interlaced,
1647 aspect_ratio, timings))
1648 return true;
1649 }
1650 return false;
1651 }
1652
1653 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1654 struct v4l2_dv_timings *timings)
1655 {
1656 struct vivid_dev *dev = video_drvdata(file);
1657
1658 if (!vivid_is_hdmi_cap(dev))
1659 return -ENODATA;
1660 if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1661 0, NULL, NULL) &&
1662 !valid_cvt_gtf_timings(timings))
1663 return -EINVAL;
1664
1665 if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap, 0))
1666 return 0;
1667 if (vb2_is_busy(&dev->vb_vid_cap_q))
1668 return -EBUSY;
1669
1670 dev->dv_timings_cap = *timings;
1671 vivid_update_format_cap(dev, false);
1672 return 0;
1673 }
1674
1675 int vidioc_query_dv_timings(struct file *file, void *_fh,
1676 struct v4l2_dv_timings *timings)
1677 {
1678 struct vivid_dev *dev = video_drvdata(file);
1679
1680 if (!vivid_is_hdmi_cap(dev))
1681 return -ENODATA;
1682 if (dev->dv_timings_signal_mode == NO_SIGNAL ||
1683 dev->edid_blocks == 0)
1684 return -ENOLINK;
1685 if (dev->dv_timings_signal_mode == NO_LOCK)
1686 return -ENOLCK;
1687 if (dev->dv_timings_signal_mode == OUT_OF_RANGE) {
1688 timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1689 return -ERANGE;
1690 }
1691 if (dev->dv_timings_signal_mode == CURRENT_DV_TIMINGS) {
1692 *timings = dev->dv_timings_cap;
1693 } else if (dev->dv_timings_signal_mode == SELECTED_DV_TIMINGS) {
1694 *timings = v4l2_dv_timings_presets[dev->query_dv_timings];
1695 } else {
1696 *timings = v4l2_dv_timings_presets[dev->query_dv_timings_last];
1697 dev->query_dv_timings_last = (dev->query_dv_timings_last + 1) %
1698 dev->query_dv_timings_size;
1699 }
1700 return 0;
1701 }
1702
1703 int vidioc_s_edid(struct file *file, void *_fh,
1704 struct v4l2_edid *edid)
1705 {
1706 struct vivid_dev *dev = video_drvdata(file);
1707
1708 memset(edid->reserved, 0, sizeof(edid->reserved));
1709 if (edid->pad >= dev->num_inputs)
1710 return -EINVAL;
1711 if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1712 return -EINVAL;
1713 if (edid->blocks == 0) {
1714 dev->edid_blocks = 0;
1715 return 0;
1716 }
1717 if (edid->blocks > dev->edid_max_blocks) {
1718 edid->blocks = dev->edid_max_blocks;
1719 return -E2BIG;
1720 }
1721 dev->edid_blocks = edid->blocks;
1722 memcpy(dev->edid, edid->edid, edid->blocks * 128);
1723 return 0;
1724 }
1725
1726 int vidioc_enum_framesizes(struct file *file, void *fh,
1727 struct v4l2_frmsizeenum *fsize)
1728 {
1729 struct vivid_dev *dev = video_drvdata(file);
1730
1731 if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1732 return -EINVAL;
1733 if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1734 return -EINVAL;
1735 if (vivid_is_webcam(dev)) {
1736 if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1737 return -EINVAL;
1738 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1739 fsize->discrete = webcam_sizes[fsize->index];
1740 return 0;
1741 }
1742 if (fsize->index)
1743 return -EINVAL;
1744 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1745 fsize->stepwise.min_width = MIN_WIDTH;
1746 fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1747 fsize->stepwise.step_width = 2;
1748 fsize->stepwise.min_height = MIN_HEIGHT;
1749 fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1750 fsize->stepwise.step_height = 2;
1751 return 0;
1752 }
1753
1754 /* timeperframe is arbitrary and continuous */
1755 int vidioc_enum_frameintervals(struct file *file, void *priv,
1756 struct v4l2_frmivalenum *fival)
1757 {
1758 struct vivid_dev *dev = video_drvdata(file);
1759 const struct vivid_fmt *fmt;
1760 int i;
1761
1762 fmt = vivid_get_format(dev, fival->pixel_format);
1763 if (!fmt)
1764 return -EINVAL;
1765
1766 if (!vivid_is_webcam(dev)) {
1767 if (fival->index)
1768 return -EINVAL;
1769 if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1770 return -EINVAL;
1771 if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1772 return -EINVAL;
1773 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1774 fival->discrete = dev->timeperframe_vid_cap;
1775 return 0;
1776 }
1777
1778 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1779 if (fival->width == webcam_sizes[i].width &&
1780 fival->height == webcam_sizes[i].height)
1781 break;
1782 if (i == ARRAY_SIZE(webcam_sizes))
1783 return -EINVAL;
1784 if (fival->index >= 2 * (VIVID_WEBCAM_SIZES - i))
1785 return -EINVAL;
1786 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1787 fival->discrete = webcam_intervals[fival->index];
1788 return 0;
1789 }
1790
1791 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1792 struct v4l2_streamparm *parm)
1793 {
1794 struct vivid_dev *dev = video_drvdata(file);
1795
1796 if (parm->type != (dev->multiplanar ?
1797 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1798 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1799 return -EINVAL;
1800
1801 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1802 parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1803 parm->parm.capture.readbuffers = 1;
1804 return 0;
1805 }
1806
1807 #define FRACT_CMP(a, OP, b) \
1808 ((u64)(a).numerator * (b).denominator OP (u64)(b).numerator * (a).denominator)
1809
1810 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1811 struct v4l2_streamparm *parm)
1812 {
1813 struct vivid_dev *dev = video_drvdata(file);
1814 unsigned ival_sz = 2 * (VIVID_WEBCAM_SIZES - dev->webcam_size_idx);
1815 struct v4l2_fract tpf;
1816 unsigned i;
1817
1818 if (parm->type != (dev->multiplanar ?
1819 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1820 V4L2_BUF_TYPE_VIDEO_CAPTURE))
1821 return -EINVAL;
1822 if (!vivid_is_webcam(dev))
1823 return vivid_vid_cap_g_parm(file, priv, parm);
1824
1825 tpf = parm->parm.capture.timeperframe;
1826
1827 if (tpf.denominator == 0)
1828 tpf = webcam_intervals[ival_sz - 1];
1829 for (i = 0; i < ival_sz; i++)
1830 if (FRACT_CMP(tpf, >=, webcam_intervals[i]))
1831 break;
1832 if (i == ival_sz)
1833 i = ival_sz - 1;
1834 dev->webcam_ival_idx = i;
1835 tpf = webcam_intervals[dev->webcam_ival_idx];
1836 tpf = FRACT_CMP(tpf, <, tpf_min) ? tpf_min : tpf;
1837 tpf = FRACT_CMP(tpf, >, tpf_max) ? tpf_max : tpf;
1838
1839 /* resync the thread's timings */
1840 dev->cap_seq_resync = true;
1841 dev->timeperframe_vid_cap = tpf;
1842 parm->parm.capture.timeperframe = tpf;
1843 parm->parm.capture.readbuffers = 1;
1844 return 0;
1845 }
Linux with added FPC-III support