This source file includes following definitions.
- vid_out_queue_setup
- vid_out_buf_out_validate
- vid_out_buf_prepare
- vid_out_buf_queue
- vid_out_start_streaming
- vid_out_stop_streaming
- vid_out_buf_request_complete
- vivid_update_format_out
- vivid_field_out
- vivid_get_pixel_aspect
- vivid_g_fmt_vid_out
- vivid_try_fmt_vid_out
- vivid_s_fmt_vid_out
- vidioc_g_fmt_vid_out_mplane
- vidioc_try_fmt_vid_out_mplane
- vidioc_s_fmt_vid_out_mplane
- vidioc_g_fmt_vid_out
- vidioc_try_fmt_vid_out
- vidioc_s_fmt_vid_out
- vivid_vid_out_g_selection
- vivid_vid_out_s_selection
- vivid_vid_out_g_pixelaspect
- vidioc_g_fmt_vid_out_overlay
- vidioc_try_fmt_vid_out_overlay
- vidioc_s_fmt_vid_out_overlay
- vivid_vid_out_overlay
- vivid_vid_out_g_fbuf
- vivid_vid_out_s_fbuf
- vidioc_enum_output
- vidioc_g_output
- vidioc_s_output
- vidioc_enumaudout
- vidioc_g_audout
- vidioc_s_audout
- vivid_vid_out_s_std
- valid_cvt_gtf_timings
- vivid_vid_out_s_dv_timings
- vivid_vid_out_g_parm
- vidioc_subscribe_event
1
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5
6
7
8 #include <linux/errno.h>
9 #include <linux/kernel.h>
10 #include <linux/sched.h>
11 #include <linux/videodev2.h>
12 #include <linux/v4l2-dv-timings.h>
13 #include <media/v4l2-common.h>
14 #include <media/v4l2-event.h>
15 #include <media/v4l2-dv-timings.h>
16 #include <media/v4l2-rect.h>
17
18 #include "vivid-core.h"
19 #include "vivid-vid-common.h"
20 #include "vivid-kthread-out.h"
21 #include "vivid-vid-out.h"
22
23 static int vid_out_queue_setup(struct vb2_queue *vq,
24 unsigned *nbuffers, unsigned *nplanes,
25 unsigned sizes[], struct device *alloc_devs[])
26 {
27 struct vivid_dev *dev = vb2_get_drv_priv(vq);
28 const struct vivid_fmt *vfmt = dev->fmt_out;
29 unsigned planes = vfmt->buffers;
30 unsigned h = dev->fmt_out_rect.height;
31 unsigned int size = dev->bytesperline_out[0] * h + vfmt->data_offset[0];
32 unsigned p;
33
34 for (p = vfmt->buffers; p < vfmt->planes; p++)
35 size += dev->bytesperline_out[p] * h / vfmt->vdownsampling[p] +
36 vfmt->data_offset[p];
37
38 if (dev->field_out == V4L2_FIELD_ALTERNATE) {
39
40
41
42
43 if (vb2_fileio_is_active(vq))
44 return -EINVAL;
45 }
46
47 if (dev->queue_setup_error) {
48
49
50
51
52 dev->queue_setup_error = false;
53 return -EINVAL;
54 }
55
56 if (*nplanes) {
57
58
59
60
61 if (*nplanes != planes)
62 return -EINVAL;
63 if (sizes[0] < size)
64 return -EINVAL;
65 for (p = 1; p < planes; p++) {
66 if (sizes[p] < dev->bytesperline_out[p] * h +
67 vfmt->data_offset[p])
68 return -EINVAL;
69 }
70 } else {
71 for (p = 0; p < planes; p++)
72 sizes[p] = p ? dev->bytesperline_out[p] * h +
73 vfmt->data_offset[p] : size;
74 }
75
76 if (vq->num_buffers + *nbuffers < 2)
77 *nbuffers = 2 - vq->num_buffers;
78
79 *nplanes = planes;
80
81 dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
82 for (p = 0; p < planes; p++)
83 dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
84 return 0;
85 }
86
87 static int vid_out_buf_out_validate(struct vb2_buffer *vb)
88 {
89 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
90 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
91
92 dprintk(dev, 1, "%s\n", __func__);
93
94 if (dev->field_out != V4L2_FIELD_ALTERNATE)
95 vbuf->field = dev->field_out;
96 else if (vbuf->field != V4L2_FIELD_TOP &&
97 vbuf->field != V4L2_FIELD_BOTTOM)
98 return -EINVAL;
99 return 0;
100 }
101
102 static int vid_out_buf_prepare(struct vb2_buffer *vb)
103 {
104 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
105 const struct vivid_fmt *vfmt = dev->fmt_out;
106 unsigned int planes = vfmt->buffers;
107 unsigned int h = dev->fmt_out_rect.height;
108 unsigned int size = dev->bytesperline_out[0] * h;
109 unsigned p;
110
111 for (p = vfmt->buffers; p < vfmt->planes; p++)
112 size += dev->bytesperline_out[p] * h / vfmt->vdownsampling[p];
113
114 dprintk(dev, 1, "%s\n", __func__);
115
116 if (WARN_ON(NULL == dev->fmt_out))
117 return -EINVAL;
118
119 if (dev->buf_prepare_error) {
120
121
122
123
124 dev->buf_prepare_error = false;
125 return -EINVAL;
126 }
127
128 for (p = 0; p < planes; p++) {
129 if (p)
130 size = dev->bytesperline_out[p] * h;
131 size += vb->planes[p].data_offset;
132
133 if (vb2_get_plane_payload(vb, p) < size) {
134 dprintk(dev, 1, "%s the payload is too small for plane %u (%lu < %u)\n",
135 __func__, p, vb2_get_plane_payload(vb, p), size);
136 return -EINVAL;
137 }
138 }
139
140 return 0;
141 }
142
143 static void vid_out_buf_queue(struct vb2_buffer *vb)
144 {
145 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
146 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
147 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
148
149 dprintk(dev, 1, "%s\n", __func__);
150
151 spin_lock(&dev->slock);
152 list_add_tail(&buf->list, &dev->vid_out_active);
153 spin_unlock(&dev->slock);
154 }
155
156 static int vid_out_start_streaming(struct vb2_queue *vq, unsigned count)
157 {
158 struct vivid_dev *dev = vb2_get_drv_priv(vq);
159 int err;
160
161 if (vb2_is_streaming(&dev->vb_vid_cap_q))
162 dev->can_loop_video = vivid_vid_can_loop(dev);
163
164 dev->vid_out_seq_count = 0;
165 dprintk(dev, 1, "%s\n", __func__);
166 if (dev->start_streaming_error) {
167 dev->start_streaming_error = false;
168 err = -EINVAL;
169 } else {
170 err = vivid_start_generating_vid_out(dev, &dev->vid_out_streaming);
171 }
172 if (err) {
173 struct vivid_buffer *buf, *tmp;
174
175 list_for_each_entry_safe(buf, tmp, &dev->vid_out_active, list) {
176 list_del(&buf->list);
177 vb2_buffer_done(&buf->vb.vb2_buf,
178 VB2_BUF_STATE_QUEUED);
179 }
180 }
181 return err;
182 }
183
184
185 static void vid_out_stop_streaming(struct vb2_queue *vq)
186 {
187 struct vivid_dev *dev = vb2_get_drv_priv(vq);
188
189 dprintk(dev, 1, "%s\n", __func__);
190 vivid_stop_generating_vid_out(dev, &dev->vid_out_streaming);
191 dev->can_loop_video = false;
192 }
193
194 static void vid_out_buf_request_complete(struct vb2_buffer *vb)
195 {
196 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
197
198 v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vid_out);
199 }
200
201 const struct vb2_ops vivid_vid_out_qops = {
202 .queue_setup = vid_out_queue_setup,
203 .buf_out_validate = vid_out_buf_out_validate,
204 .buf_prepare = vid_out_buf_prepare,
205 .buf_queue = vid_out_buf_queue,
206 .start_streaming = vid_out_start_streaming,
207 .stop_streaming = vid_out_stop_streaming,
208 .buf_request_complete = vid_out_buf_request_complete,
209 .wait_prepare = vb2_ops_wait_prepare,
210 .wait_finish = vb2_ops_wait_finish,
211 };
212
213
214
215
216
217 void vivid_update_format_out(struct vivid_dev *dev)
218 {
219 struct v4l2_bt_timings *bt = &dev->dv_timings_out.bt;
220 unsigned size, p;
221 u64 pixelclock;
222
223 switch (dev->output_type[dev->output]) {
224 case SVID:
225 default:
226 dev->field_out = dev->tv_field_out;
227 dev->sink_rect.width = 720;
228 if (dev->std_out & V4L2_STD_525_60) {
229 dev->sink_rect.height = 480;
230 dev->timeperframe_vid_out = (struct v4l2_fract) { 1001, 30000 };
231 dev->service_set_out = V4L2_SLICED_CAPTION_525;
232 } else {
233 dev->sink_rect.height = 576;
234 dev->timeperframe_vid_out = (struct v4l2_fract) { 1000, 25000 };
235 dev->service_set_out = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
236 }
237 dev->colorspace_out = V4L2_COLORSPACE_SMPTE170M;
238 break;
239 case HDMI:
240 dev->sink_rect.width = bt->width;
241 dev->sink_rect.height = bt->height;
242 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
243
244 if (can_reduce_fps(bt) && (bt->flags & V4L2_DV_FL_REDUCED_FPS))
245 pixelclock = div_u64(bt->pixelclock * 1000, 1001);
246 else
247 pixelclock = bt->pixelclock;
248
249 dev->timeperframe_vid_out = (struct v4l2_fract) {
250 size / 100, (u32)pixelclock / 100
251 };
252 if (bt->interlaced)
253 dev->field_out = V4L2_FIELD_ALTERNATE;
254 else
255 dev->field_out = V4L2_FIELD_NONE;
256 if (!dev->dvi_d_out && (bt->flags & V4L2_DV_FL_IS_CE_VIDEO)) {
257 if (bt->width == 720 && bt->height <= 576)
258 dev->colorspace_out = V4L2_COLORSPACE_SMPTE170M;
259 else
260 dev->colorspace_out = V4L2_COLORSPACE_REC709;
261 } else {
262 dev->colorspace_out = V4L2_COLORSPACE_SRGB;
263 }
264 break;
265 }
266 dev->xfer_func_out = V4L2_XFER_FUNC_DEFAULT;
267 dev->ycbcr_enc_out = V4L2_YCBCR_ENC_DEFAULT;
268 dev->hsv_enc_out = V4L2_HSV_ENC_180;
269 dev->quantization_out = V4L2_QUANTIZATION_DEFAULT;
270 dev->compose_out = dev->sink_rect;
271 dev->compose_bounds_out = dev->sink_rect;
272 dev->crop_out = dev->compose_out;
273 if (V4L2_FIELD_HAS_T_OR_B(dev->field_out))
274 dev->crop_out.height /= 2;
275 dev->fmt_out_rect = dev->crop_out;
276 for (p = 0; p < dev->fmt_out->planes; p++)
277 dev->bytesperline_out[p] =
278 (dev->sink_rect.width * dev->fmt_out->bit_depth[p]) / 8;
279 }
280
281
282 static enum v4l2_field vivid_field_out(struct vivid_dev *dev, enum v4l2_field field)
283 {
284 if (vivid_is_svid_out(dev)) {
285 switch (field) {
286 case V4L2_FIELD_INTERLACED_TB:
287 case V4L2_FIELD_INTERLACED_BT:
288 case V4L2_FIELD_SEQ_TB:
289 case V4L2_FIELD_SEQ_BT:
290 case V4L2_FIELD_ALTERNATE:
291 return field;
292 case V4L2_FIELD_INTERLACED:
293 default:
294 return V4L2_FIELD_INTERLACED;
295 }
296 }
297 if (vivid_is_hdmi_out(dev))
298 return dev->dv_timings_out.bt.interlaced ? V4L2_FIELD_ALTERNATE :
299 V4L2_FIELD_NONE;
300 return V4L2_FIELD_NONE;
301 }
302
303 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
304 {
305 if (vivid_is_svid_out(dev))
306 return (dev->std_out & V4L2_STD_525_60) ?
307 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
308
309 if (vivid_is_hdmi_out(dev) &&
310 dev->sink_rect.width == 720 && dev->sink_rect.height <= 576)
311 return dev->sink_rect.height == 480 ?
312 TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
313
314 return TPG_PIXEL_ASPECT_SQUARE;
315 }
316
317 int vivid_g_fmt_vid_out(struct file *file, void *priv,
318 struct v4l2_format *f)
319 {
320 struct vivid_dev *dev = video_drvdata(file);
321 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
322 const struct vivid_fmt *fmt = dev->fmt_out;
323 unsigned p;
324
325 mp->width = dev->fmt_out_rect.width;
326 mp->height = dev->fmt_out_rect.height;
327 mp->field = dev->field_out;
328 mp->pixelformat = fmt->fourcc;
329 mp->colorspace = dev->colorspace_out;
330 mp->xfer_func = dev->xfer_func_out;
331 mp->ycbcr_enc = dev->ycbcr_enc_out;
332 mp->quantization = dev->quantization_out;
333 mp->num_planes = fmt->buffers;
334 for (p = 0; p < mp->num_planes; p++) {
335 mp->plane_fmt[p].bytesperline = dev->bytesperline_out[p];
336 mp->plane_fmt[p].sizeimage =
337 mp->plane_fmt[p].bytesperline * mp->height +
338 fmt->data_offset[p];
339 }
340 for (p = fmt->buffers; p < fmt->planes; p++) {
341 unsigned stride = dev->bytesperline_out[p];
342
343 mp->plane_fmt[0].sizeimage +=
344 (stride * mp->height) / fmt->vdownsampling[p];
345 }
346 return 0;
347 }
348
349 int vivid_try_fmt_vid_out(struct file *file, void *priv,
350 struct v4l2_format *f)
351 {
352 struct vivid_dev *dev = video_drvdata(file);
353 struct v4l2_bt_timings *bt = &dev->dv_timings_out.bt;
354 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
355 struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
356 const struct vivid_fmt *fmt;
357 unsigned bytesperline, max_bpl;
358 unsigned factor = 1;
359 unsigned w, h;
360 unsigned p;
361
362 fmt = vivid_get_format(dev, mp->pixelformat);
363 if (!fmt) {
364 dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
365 mp->pixelformat);
366 mp->pixelformat = V4L2_PIX_FMT_YUYV;
367 fmt = vivid_get_format(dev, mp->pixelformat);
368 }
369
370 mp->field = vivid_field_out(dev, mp->field);
371 if (vivid_is_svid_out(dev)) {
372 w = 720;
373 h = (dev->std_out & V4L2_STD_525_60) ? 480 : 576;
374 } else {
375 w = dev->sink_rect.width;
376 h = dev->sink_rect.height;
377 }
378 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
379 factor = 2;
380 if (!dev->has_scaler_out && !dev->has_crop_out && !dev->has_compose_out) {
381 mp->width = w;
382 mp->height = h / factor;
383 } else {
384 struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
385
386 v4l2_rect_set_min_size(&r, &vivid_min_rect);
387 v4l2_rect_set_max_size(&r, &vivid_max_rect);
388 if (dev->has_scaler_out && !dev->has_crop_out) {
389 struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
390
391 v4l2_rect_set_max_size(&r, &max_r);
392 } else if (!dev->has_scaler_out && dev->has_compose_out && !dev->has_crop_out) {
393 v4l2_rect_set_max_size(&r, &dev->sink_rect);
394 } else if (!dev->has_scaler_out && !dev->has_compose_out) {
395 v4l2_rect_set_min_size(&r, &dev->sink_rect);
396 }
397 mp->width = r.width;
398 mp->height = r.height / factor;
399 }
400
401
402
403 mp->num_planes = fmt->buffers;
404 for (p = 0; p < fmt->buffers; p++) {
405
406 bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
407
408 max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
409
410 if (pfmt[p].bytesperline > max_bpl)
411 pfmt[p].bytesperline = max_bpl;
412 if (pfmt[p].bytesperline < bytesperline)
413 pfmt[p].bytesperline = bytesperline;
414
415 pfmt[p].sizeimage = (pfmt[p].bytesperline * mp->height) /
416 fmt->vdownsampling[p] + fmt->data_offset[p];
417
418 memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
419 }
420 for (p = fmt->buffers; p < fmt->planes; p++)
421 pfmt[0].sizeimage += (pfmt[0].bytesperline * mp->height *
422 (fmt->bit_depth[p] / fmt->vdownsampling[p])) /
423 (fmt->bit_depth[0] / fmt->vdownsampling[0]);
424
425 mp->xfer_func = V4L2_XFER_FUNC_DEFAULT;
426 mp->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
427 mp->quantization = V4L2_QUANTIZATION_DEFAULT;
428 if (vivid_is_svid_out(dev)) {
429 mp->colorspace = V4L2_COLORSPACE_SMPTE170M;
430 } else if (dev->dvi_d_out || !(bt->flags & V4L2_DV_FL_IS_CE_VIDEO)) {
431 mp->colorspace = V4L2_COLORSPACE_SRGB;
432 if (dev->dvi_d_out)
433 mp->quantization = V4L2_QUANTIZATION_LIM_RANGE;
434 } else if (bt->width == 720 && bt->height <= 576) {
435 mp->colorspace = V4L2_COLORSPACE_SMPTE170M;
436 } else if (mp->colorspace != V4L2_COLORSPACE_SMPTE170M &&
437 mp->colorspace != V4L2_COLORSPACE_REC709 &&
438 mp->colorspace != V4L2_COLORSPACE_OPRGB &&
439 mp->colorspace != V4L2_COLORSPACE_BT2020 &&
440 mp->colorspace != V4L2_COLORSPACE_SRGB) {
441 mp->colorspace = V4L2_COLORSPACE_REC709;
442 }
443 memset(mp->reserved, 0, sizeof(mp->reserved));
444 return 0;
445 }
446
447 int vivid_s_fmt_vid_out(struct file *file, void *priv,
448 struct v4l2_format *f)
449 {
450 struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
451 struct vivid_dev *dev = video_drvdata(file);
452 struct v4l2_rect *crop = &dev->crop_out;
453 struct v4l2_rect *compose = &dev->compose_out;
454 struct vb2_queue *q = &dev->vb_vid_out_q;
455 int ret = vivid_try_fmt_vid_out(file, priv, f);
456 unsigned factor = 1;
457 unsigned p;
458
459 if (ret < 0)
460 return ret;
461
462 if (vb2_is_busy(q) &&
463 (vivid_is_svid_out(dev) ||
464 mp->width != dev->fmt_out_rect.width ||
465 mp->height != dev->fmt_out_rect.height ||
466 mp->pixelformat != dev->fmt_out->fourcc ||
467 mp->field != dev->field_out)) {
468 dprintk(dev, 1, "%s device busy\n", __func__);
469 return -EBUSY;
470 }
471
472
473
474
475
476
477 if (vb2_is_busy(q))
478 goto set_colorspace;
479
480 dev->fmt_out = vivid_get_format(dev, mp->pixelformat);
481 if (V4L2_FIELD_HAS_T_OR_B(mp->field))
482 factor = 2;
483
484 if (dev->has_scaler_out || dev->has_crop_out || dev->has_compose_out) {
485 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
486
487 if (dev->has_scaler_out) {
488 if (dev->has_crop_out)
489 v4l2_rect_map_inside(crop, &r);
490 else
491 *crop = r;
492 if (dev->has_compose_out && !dev->has_crop_out) {
493 struct v4l2_rect min_r = {
494 0, 0,
495 r.width / MAX_ZOOM,
496 factor * r.height / MAX_ZOOM
497 };
498 struct v4l2_rect max_r = {
499 0, 0,
500 r.width * MAX_ZOOM,
501 factor * r.height * MAX_ZOOM
502 };
503
504 v4l2_rect_set_min_size(compose, &min_r);
505 v4l2_rect_set_max_size(compose, &max_r);
506 v4l2_rect_map_inside(compose, &dev->compose_bounds_out);
507 } else if (dev->has_compose_out) {
508 struct v4l2_rect min_r = {
509 0, 0,
510 crop->width / MAX_ZOOM,
511 factor * crop->height / MAX_ZOOM
512 };
513 struct v4l2_rect max_r = {
514 0, 0,
515 crop->width * MAX_ZOOM,
516 factor * crop->height * MAX_ZOOM
517 };
518
519 v4l2_rect_set_min_size(compose, &min_r);
520 v4l2_rect_set_max_size(compose, &max_r);
521 v4l2_rect_map_inside(compose, &dev->compose_bounds_out);
522 }
523 } else if (dev->has_compose_out && !dev->has_crop_out) {
524 v4l2_rect_set_size_to(crop, &r);
525 r.height *= factor;
526 v4l2_rect_set_size_to(compose, &r);
527 v4l2_rect_map_inside(compose, &dev->compose_bounds_out);
528 } else if (!dev->has_compose_out) {
529 v4l2_rect_map_inside(crop, &r);
530 r.height /= factor;
531 v4l2_rect_set_size_to(compose, &r);
532 } else {
533 r.height *= factor;
534 v4l2_rect_set_max_size(compose, &r);
535 v4l2_rect_map_inside(compose, &dev->compose_bounds_out);
536 crop->top *= factor;
537 crop->height *= factor;
538 v4l2_rect_set_size_to(crop, compose);
539 v4l2_rect_map_inside(crop, &r);
540 crop->top /= factor;
541 crop->height /= factor;
542 }
543 } else {
544 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
545
546 v4l2_rect_set_size_to(crop, &r);
547 r.height /= factor;
548 v4l2_rect_set_size_to(compose, &r);
549 }
550
551 dev->fmt_out_rect.width = mp->width;
552 dev->fmt_out_rect.height = mp->height;
553 for (p = 0; p < mp->num_planes; p++)
554 dev->bytesperline_out[p] = mp->plane_fmt[p].bytesperline;
555 for (p = dev->fmt_out->buffers; p < dev->fmt_out->planes; p++)
556 dev->bytesperline_out[p] =
557 (dev->bytesperline_out[0] * dev->fmt_out->bit_depth[p]) /
558 dev->fmt_out->bit_depth[0];
559 dev->field_out = mp->field;
560 if (vivid_is_svid_out(dev))
561 dev->tv_field_out = mp->field;
562
563 set_colorspace:
564 dev->colorspace_out = mp->colorspace;
565 dev->xfer_func_out = mp->xfer_func;
566 dev->ycbcr_enc_out = mp->ycbcr_enc;
567 dev->quantization_out = mp->quantization;
568 if (dev->loop_video) {
569 vivid_send_source_change(dev, SVID);
570 vivid_send_source_change(dev, HDMI);
571 }
572 return 0;
573 }
574
575 int vidioc_g_fmt_vid_out_mplane(struct file *file, void *priv,
576 struct v4l2_format *f)
577 {
578 struct vivid_dev *dev = video_drvdata(file);
579
580 if (!dev->multiplanar)
581 return -ENOTTY;
582 return vivid_g_fmt_vid_out(file, priv, f);
583 }
584
585 int vidioc_try_fmt_vid_out_mplane(struct file *file, void *priv,
586 struct v4l2_format *f)
587 {
588 struct vivid_dev *dev = video_drvdata(file);
589
590 if (!dev->multiplanar)
591 return -ENOTTY;
592 return vivid_try_fmt_vid_out(file, priv, f);
593 }
594
595 int vidioc_s_fmt_vid_out_mplane(struct file *file, void *priv,
596 struct v4l2_format *f)
597 {
598 struct vivid_dev *dev = video_drvdata(file);
599
600 if (!dev->multiplanar)
601 return -ENOTTY;
602 return vivid_s_fmt_vid_out(file, priv, f);
603 }
604
605 int vidioc_g_fmt_vid_out(struct file *file, void *priv,
606 struct v4l2_format *f)
607 {
608 struct vivid_dev *dev = video_drvdata(file);
609
610 if (dev->multiplanar)
611 return -ENOTTY;
612 return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_out);
613 }
614
615 int vidioc_try_fmt_vid_out(struct file *file, void *priv,
616 struct v4l2_format *f)
617 {
618 struct vivid_dev *dev = video_drvdata(file);
619
620 if (dev->multiplanar)
621 return -ENOTTY;
622 return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_out);
623 }
624
625 int vidioc_s_fmt_vid_out(struct file *file, void *priv,
626 struct v4l2_format *f)
627 {
628 struct vivid_dev *dev = video_drvdata(file);
629
630 if (dev->multiplanar)
631 return -ENOTTY;
632 return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_out);
633 }
634
635 int vivid_vid_out_g_selection(struct file *file, void *priv,
636 struct v4l2_selection *sel)
637 {
638 struct vivid_dev *dev = video_drvdata(file);
639
640 if (!dev->has_crop_out && !dev->has_compose_out)
641 return -ENOTTY;
642 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
643 return -EINVAL;
644
645 sel->r.left = sel->r.top = 0;
646 switch (sel->target) {
647 case V4L2_SEL_TGT_CROP:
648 if (!dev->has_crop_out)
649 return -EINVAL;
650 sel->r = dev->crop_out;
651 break;
652 case V4L2_SEL_TGT_CROP_DEFAULT:
653 if (!dev->has_crop_out)
654 return -EINVAL;
655 sel->r = dev->fmt_out_rect;
656 break;
657 case V4L2_SEL_TGT_CROP_BOUNDS:
658 if (!dev->has_crop_out)
659 return -EINVAL;
660 sel->r = vivid_max_rect;
661 break;
662 case V4L2_SEL_TGT_COMPOSE:
663 if (!dev->has_compose_out)
664 return -EINVAL;
665 sel->r = dev->compose_out;
666 break;
667 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
668 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
669 if (!dev->has_compose_out)
670 return -EINVAL;
671 sel->r = dev->sink_rect;
672 break;
673 default:
674 return -EINVAL;
675 }
676 return 0;
677 }
678
679 int vivid_vid_out_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
680 {
681 struct vivid_dev *dev = video_drvdata(file);
682 struct v4l2_rect *crop = &dev->crop_out;
683 struct v4l2_rect *compose = &dev->compose_out;
684 unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_out) ? 2 : 1;
685 int ret;
686
687 if (!dev->has_crop_out && !dev->has_compose_out)
688 return -ENOTTY;
689 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
690 return -EINVAL;
691
692 switch (s->target) {
693 case V4L2_SEL_TGT_CROP:
694 if (!dev->has_crop_out)
695 return -EINVAL;
696 ret = vivid_vid_adjust_sel(s->flags, &s->r);
697 if (ret)
698 return ret;
699 v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
700 v4l2_rect_set_max_size(&s->r, &dev->fmt_out_rect);
701 if (dev->has_scaler_out) {
702 struct v4l2_rect max_rect = {
703 0, 0,
704 dev->sink_rect.width * MAX_ZOOM,
705 (dev->sink_rect.height / factor) * MAX_ZOOM
706 };
707
708 v4l2_rect_set_max_size(&s->r, &max_rect);
709 if (dev->has_compose_out) {
710 struct v4l2_rect min_rect = {
711 0, 0,
712 s->r.width / MAX_ZOOM,
713 (s->r.height * factor) / MAX_ZOOM
714 };
715 struct v4l2_rect max_rect = {
716 0, 0,
717 s->r.width * MAX_ZOOM,
718 (s->r.height * factor) * MAX_ZOOM
719 };
720
721 v4l2_rect_set_min_size(compose, &min_rect);
722 v4l2_rect_set_max_size(compose, &max_rect);
723 v4l2_rect_map_inside(compose, &dev->compose_bounds_out);
724 }
725 } else if (dev->has_compose_out) {
726 s->r.top *= factor;
727 s->r.height *= factor;
728 v4l2_rect_set_max_size(&s->r, &dev->sink_rect);
729 v4l2_rect_set_size_to(compose, &s->r);
730 v4l2_rect_map_inside(compose, &dev->compose_bounds_out);
731 s->r.top /= factor;
732 s->r.height /= factor;
733 } else {
734 v4l2_rect_set_size_to(&s->r, &dev->sink_rect);
735 s->r.height /= factor;
736 }
737 v4l2_rect_map_inside(&s->r, &dev->fmt_out_rect);
738 *crop = s->r;
739 break;
740 case V4L2_SEL_TGT_COMPOSE:
741 if (!dev->has_compose_out)
742 return -EINVAL;
743 ret = vivid_vid_adjust_sel(s->flags, &s->r);
744 if (ret)
745 return ret;
746 v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
747 v4l2_rect_set_max_size(&s->r, &dev->sink_rect);
748 v4l2_rect_map_inside(&s->r, &dev->compose_bounds_out);
749 s->r.top /= factor;
750 s->r.height /= factor;
751 if (dev->has_scaler_out) {
752 struct v4l2_rect fmt = dev->fmt_out_rect;
753 struct v4l2_rect max_rect = {
754 0, 0,
755 s->r.width * MAX_ZOOM,
756 s->r.height * MAX_ZOOM
757 };
758 struct v4l2_rect min_rect = {
759 0, 0,
760 s->r.width / MAX_ZOOM,
761 s->r.height / MAX_ZOOM
762 };
763
764 v4l2_rect_set_min_size(&fmt, &min_rect);
765 if (!dev->has_crop_out)
766 v4l2_rect_set_max_size(&fmt, &max_rect);
767 if (!v4l2_rect_same_size(&dev->fmt_out_rect, &fmt) &&
768 vb2_is_busy(&dev->vb_vid_out_q))
769 return -EBUSY;
770 if (dev->has_crop_out) {
771 v4l2_rect_set_min_size(crop, &min_rect);
772 v4l2_rect_set_max_size(crop, &max_rect);
773 }
774 dev->fmt_out_rect = fmt;
775 } else if (dev->has_crop_out) {
776 struct v4l2_rect fmt = dev->fmt_out_rect;
777
778 v4l2_rect_set_min_size(&fmt, &s->r);
779 if (!v4l2_rect_same_size(&dev->fmt_out_rect, &fmt) &&
780 vb2_is_busy(&dev->vb_vid_out_q))
781 return -EBUSY;
782 dev->fmt_out_rect = fmt;
783 v4l2_rect_set_size_to(crop, &s->r);
784 v4l2_rect_map_inside(crop, &dev->fmt_out_rect);
785 } else {
786 if (!v4l2_rect_same_size(&s->r, &dev->fmt_out_rect) &&
787 vb2_is_busy(&dev->vb_vid_out_q))
788 return -EBUSY;
789 v4l2_rect_set_size_to(&dev->fmt_out_rect, &s->r);
790 v4l2_rect_set_size_to(crop, &s->r);
791 crop->height /= factor;
792 v4l2_rect_map_inside(crop, &dev->fmt_out_rect);
793 }
794 s->r.top *= factor;
795 s->r.height *= factor;
796 if (dev->bitmap_out && (compose->width != s->r.width ||
797 compose->height != s->r.height)) {
798 vfree(dev->bitmap_out);
799 dev->bitmap_out = NULL;
800 }
801 *compose = s->r;
802 break;
803 default:
804 return -EINVAL;
805 }
806
807 return 0;
808 }
809
810 int vivid_vid_out_g_pixelaspect(struct file *file, void *priv,
811 int type, struct v4l2_fract *f)
812 {
813 struct vivid_dev *dev = video_drvdata(file);
814
815 if (type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
816 return -EINVAL;
817
818 switch (vivid_get_pixel_aspect(dev)) {
819 case TPG_PIXEL_ASPECT_NTSC:
820 f->numerator = 11;
821 f->denominator = 10;
822 break;
823 case TPG_PIXEL_ASPECT_PAL:
824 f->numerator = 54;
825 f->denominator = 59;
826 break;
827 default:
828 break;
829 }
830 return 0;
831 }
832
833 int vidioc_g_fmt_vid_out_overlay(struct file *file, void *priv,
834 struct v4l2_format *f)
835 {
836 struct vivid_dev *dev = video_drvdata(file);
837 const struct v4l2_rect *compose = &dev->compose_out;
838 struct v4l2_window *win = &f->fmt.win;
839 unsigned clipcount = win->clipcount;
840
841 if (!dev->has_fb)
842 return -EINVAL;
843 win->w.top = dev->overlay_out_top;
844 win->w.left = dev->overlay_out_left;
845 win->w.width = compose->width;
846 win->w.height = compose->height;
847 win->clipcount = dev->clipcount_out;
848 win->field = V4L2_FIELD_ANY;
849 win->chromakey = dev->chromakey_out;
850 win->global_alpha = dev->global_alpha_out;
851 if (clipcount > dev->clipcount_out)
852 clipcount = dev->clipcount_out;
853 if (dev->bitmap_out == NULL)
854 win->bitmap = NULL;
855 else if (win->bitmap) {
856 if (copy_to_user(win->bitmap, dev->bitmap_out,
857 ((dev->compose_out.width + 7) / 8) * dev->compose_out.height))
858 return -EFAULT;
859 }
860 if (clipcount && win->clips) {
861 if (copy_to_user(win->clips, dev->clips_out,
862 clipcount * sizeof(dev->clips_out[0])))
863 return -EFAULT;
864 }
865 return 0;
866 }
867
868 int vidioc_try_fmt_vid_out_overlay(struct file *file, void *priv,
869 struct v4l2_format *f)
870 {
871 struct vivid_dev *dev = video_drvdata(file);
872 const struct v4l2_rect *compose = &dev->compose_out;
873 struct v4l2_window *win = &f->fmt.win;
874 int i, j;
875
876 if (!dev->has_fb)
877 return -EINVAL;
878 win->w.left = clamp_t(int, win->w.left,
879 -dev->display_width, dev->display_width);
880 win->w.top = clamp_t(int, win->w.top,
881 -dev->display_height, dev->display_height);
882 win->w.width = compose->width;
883 win->w.height = compose->height;
884
885
886
887
888 win->field = V4L2_FIELD_ANY;
889 if (win->clipcount && !win->clips)
890 win->clipcount = 0;
891 if (win->clipcount > MAX_CLIPS)
892 win->clipcount = MAX_CLIPS;
893 if (win->clipcount) {
894 if (copy_from_user(dev->try_clips_out, win->clips,
895 win->clipcount * sizeof(dev->clips_out[0])))
896 return -EFAULT;
897 for (i = 0; i < win->clipcount; i++) {
898 struct v4l2_rect *r = &dev->try_clips_out[i].c;
899
900 r->top = clamp_t(s32, r->top, 0, dev->display_height - 1);
901 r->height = clamp_t(s32, r->height, 1, dev->display_height - r->top);
902 r->left = clamp_t(u32, r->left, 0, dev->display_width - 1);
903 r->width = clamp_t(u32, r->width, 1, dev->display_width - r->left);
904 }
905
906
907
908
909 for (i = 0; i < win->clipcount - 1; i++) {
910 struct v4l2_rect *r1 = &dev->try_clips_out[i].c;
911
912 for (j = i + 1; j < win->clipcount; j++) {
913 struct v4l2_rect *r2 = &dev->try_clips_out[j].c;
914
915 if (v4l2_rect_overlap(r1, r2))
916 return -EINVAL;
917 }
918 }
919 if (copy_to_user(win->clips, dev->try_clips_out,
920 win->clipcount * sizeof(dev->clips_out[0])))
921 return -EFAULT;
922 }
923 return 0;
924 }
925
926 int vidioc_s_fmt_vid_out_overlay(struct file *file, void *priv,
927 struct v4l2_format *f)
928 {
929 struct vivid_dev *dev = video_drvdata(file);
930 const struct v4l2_rect *compose = &dev->compose_out;
931 struct v4l2_window *win = &f->fmt.win;
932 int ret = vidioc_try_fmt_vid_out_overlay(file, priv, f);
933 unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
934 unsigned clips_size = win->clipcount * sizeof(dev->clips_out[0]);
935 void *new_bitmap = NULL;
936
937 if (ret)
938 return ret;
939
940 if (win->bitmap) {
941 new_bitmap = vzalloc(bitmap_size);
942
943 if (!new_bitmap)
944 return -ENOMEM;
945 if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
946 vfree(new_bitmap);
947 return -EFAULT;
948 }
949 }
950
951 dev->overlay_out_top = win->w.top;
952 dev->overlay_out_left = win->w.left;
953 vfree(dev->bitmap_out);
954 dev->bitmap_out = new_bitmap;
955 dev->clipcount_out = win->clipcount;
956 if (dev->clipcount_out)
957 memcpy(dev->clips_out, dev->try_clips_out, clips_size);
958 dev->chromakey_out = win->chromakey;
959 dev->global_alpha_out = win->global_alpha;
960 return ret;
961 }
962
963 int vivid_vid_out_overlay(struct file *file, void *fh, unsigned i)
964 {
965 struct vivid_dev *dev = video_drvdata(file);
966
967 if (i && !dev->fmt_out->can_do_overlay) {
968 dprintk(dev, 1, "unsupported output format for output overlay\n");
969 return -EINVAL;
970 }
971
972 dev->overlay_out_enabled = i;
973 return 0;
974 }
975
976 int vivid_vid_out_g_fbuf(struct file *file, void *fh,
977 struct v4l2_framebuffer *a)
978 {
979 struct vivid_dev *dev = video_drvdata(file);
980
981 a->capability = V4L2_FBUF_CAP_EXTERNOVERLAY |
982 V4L2_FBUF_CAP_BITMAP_CLIPPING |
983 V4L2_FBUF_CAP_LIST_CLIPPING |
984 V4L2_FBUF_CAP_CHROMAKEY |
985 V4L2_FBUF_CAP_SRC_CHROMAKEY |
986 V4L2_FBUF_CAP_GLOBAL_ALPHA |
987 V4L2_FBUF_CAP_LOCAL_ALPHA |
988 V4L2_FBUF_CAP_LOCAL_INV_ALPHA;
989 a->flags = V4L2_FBUF_FLAG_OVERLAY | dev->fbuf_out_flags;
990 a->base = (void *)dev->video_pbase;
991 a->fmt.width = dev->display_width;
992 a->fmt.height = dev->display_height;
993 if (dev->fb_defined.green.length == 5)
994 a->fmt.pixelformat = V4L2_PIX_FMT_ARGB555;
995 else
996 a->fmt.pixelformat = V4L2_PIX_FMT_RGB565;
997 a->fmt.bytesperline = dev->display_byte_stride;
998 a->fmt.sizeimage = a->fmt.height * a->fmt.bytesperline;
999 a->fmt.field = V4L2_FIELD_NONE;
1000 a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1001 a->fmt.priv = 0;
1002 return 0;
1003 }
1004
1005 int vivid_vid_out_s_fbuf(struct file *file, void *fh,
1006 const struct v4l2_framebuffer *a)
1007 {
1008 struct vivid_dev *dev = video_drvdata(file);
1009 const unsigned chroma_flags = V4L2_FBUF_FLAG_CHROMAKEY |
1010 V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1011 const unsigned alpha_flags = V4L2_FBUF_FLAG_GLOBAL_ALPHA |
1012 V4L2_FBUF_FLAG_LOCAL_ALPHA |
1013 V4L2_FBUF_FLAG_LOCAL_INV_ALPHA;
1014
1015
1016 if ((a->flags & chroma_flags) == chroma_flags)
1017 return -EINVAL;
1018 switch (a->flags & alpha_flags) {
1019 case 0:
1020 case V4L2_FBUF_FLAG_GLOBAL_ALPHA:
1021 case V4L2_FBUF_FLAG_LOCAL_ALPHA:
1022 case V4L2_FBUF_FLAG_LOCAL_INV_ALPHA:
1023 break;
1024 default:
1025 return -EINVAL;
1026 }
1027 dev->fbuf_out_flags &= ~(chroma_flags | alpha_flags);
1028 dev->fbuf_out_flags = a->flags & (chroma_flags | alpha_flags);
1029 return 0;
1030 }
1031
1032 static const struct v4l2_audioout vivid_audio_outputs[] = {
1033 { 0, "Line-Out 1" },
1034 { 1, "Line-Out 2" },
1035 };
1036
1037 int vidioc_enum_output(struct file *file, void *priv,
1038 struct v4l2_output *out)
1039 {
1040 struct vivid_dev *dev = video_drvdata(file);
1041
1042 if (out->index >= dev->num_outputs)
1043 return -EINVAL;
1044
1045 out->type = V4L2_OUTPUT_TYPE_ANALOG;
1046 switch (dev->output_type[out->index]) {
1047 case SVID:
1048 snprintf(out->name, sizeof(out->name), "S-Video %u",
1049 dev->output_name_counter[out->index]);
1050 out->std = V4L2_STD_ALL;
1051 if (dev->has_audio_outputs)
1052 out->audioset = (1 << ARRAY_SIZE(vivid_audio_outputs)) - 1;
1053 out->capabilities = V4L2_OUT_CAP_STD;
1054 break;
1055 case HDMI:
1056 snprintf(out->name, sizeof(out->name), "HDMI %u",
1057 dev->output_name_counter[out->index]);
1058 out->capabilities = V4L2_OUT_CAP_DV_TIMINGS;
1059 break;
1060 }
1061 return 0;
1062 }
1063
1064 int vidioc_g_output(struct file *file, void *priv, unsigned *o)
1065 {
1066 struct vivid_dev *dev = video_drvdata(file);
1067
1068 *o = dev->output;
1069 return 0;
1070 }
1071
1072 int vidioc_s_output(struct file *file, void *priv, unsigned o)
1073 {
1074 struct vivid_dev *dev = video_drvdata(file);
1075
1076 if (o >= dev->num_outputs)
1077 return -EINVAL;
1078
1079 if (o == dev->output)
1080 return 0;
1081
1082 if (vb2_is_busy(&dev->vb_vid_out_q) || vb2_is_busy(&dev->vb_vbi_out_q))
1083 return -EBUSY;
1084
1085 dev->output = o;
1086 dev->tv_audio_output = 0;
1087 if (dev->output_type[o] == SVID)
1088 dev->vid_out_dev.tvnorms = V4L2_STD_ALL;
1089 else
1090 dev->vid_out_dev.tvnorms = 0;
1091
1092 dev->vbi_out_dev.tvnorms = dev->vid_out_dev.tvnorms;
1093 vivid_update_format_out(dev);
1094
1095 v4l2_ctrl_activate(dev->ctrl_display_present, vivid_is_hdmi_out(dev));
1096 if (vivid_is_hdmi_out(dev))
1097 v4l2_ctrl_s_ctrl(dev->ctrl_display_present,
1098 dev->display_present[dev->output]);
1099
1100 return 0;
1101 }
1102
1103 int vidioc_enumaudout(struct file *file, void *fh, struct v4l2_audioout *vout)
1104 {
1105 if (vout->index >= ARRAY_SIZE(vivid_audio_outputs))
1106 return -EINVAL;
1107 *vout = vivid_audio_outputs[vout->index];
1108 return 0;
1109 }
1110
1111 int vidioc_g_audout(struct file *file, void *fh, struct v4l2_audioout *vout)
1112 {
1113 struct vivid_dev *dev = video_drvdata(file);
1114
1115 if (!vivid_is_svid_out(dev))
1116 return -EINVAL;
1117 *vout = vivid_audio_outputs[dev->tv_audio_output];
1118 return 0;
1119 }
1120
1121 int vidioc_s_audout(struct file *file, void *fh, const struct v4l2_audioout *vout)
1122 {
1123 struct vivid_dev *dev = video_drvdata(file);
1124
1125 if (!vivid_is_svid_out(dev))
1126 return -EINVAL;
1127 if (vout->index >= ARRAY_SIZE(vivid_audio_outputs))
1128 return -EINVAL;
1129 dev->tv_audio_output = vout->index;
1130 return 0;
1131 }
1132
1133 int vivid_vid_out_s_std(struct file *file, void *priv, v4l2_std_id id)
1134 {
1135 struct vivid_dev *dev = video_drvdata(file);
1136
1137 if (!vivid_is_svid_out(dev))
1138 return -ENODATA;
1139 if (dev->std_out == id)
1140 return 0;
1141 if (vb2_is_busy(&dev->vb_vid_out_q) || vb2_is_busy(&dev->vb_vbi_out_q))
1142 return -EBUSY;
1143 dev->std_out = id;
1144 vivid_update_format_out(dev);
1145 return 0;
1146 }
1147
1148 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1149 {
1150 struct v4l2_bt_timings *bt = &timings->bt;
1151
1152 if ((bt->standards & (V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF)) &&
1153 v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap, NULL, NULL))
1154 return true;
1155
1156 return false;
1157 }
1158
1159 int vivid_vid_out_s_dv_timings(struct file *file, void *_fh,
1160 struct v4l2_dv_timings *timings)
1161 {
1162 struct vivid_dev *dev = video_drvdata(file);
1163 if (!vivid_is_hdmi_out(dev))
1164 return -ENODATA;
1165 if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1166 0, NULL, NULL) &&
1167 !valid_cvt_gtf_timings(timings))
1168 return -EINVAL;
1169 if (v4l2_match_dv_timings(timings, &dev->dv_timings_out, 0, true))
1170 return 0;
1171 if (vb2_is_busy(&dev->vb_vid_out_q))
1172 return -EBUSY;
1173 dev->dv_timings_out = *timings;
1174 vivid_update_format_out(dev);
1175 return 0;
1176 }
1177
1178 int vivid_vid_out_g_parm(struct file *file, void *priv,
1179 struct v4l2_streamparm *parm)
1180 {
1181 struct vivid_dev *dev = video_drvdata(file);
1182
1183 if (parm->type != (dev->multiplanar ?
1184 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
1185 V4L2_BUF_TYPE_VIDEO_OUTPUT))
1186 return -EINVAL;
1187
1188 parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1189 parm->parm.output.timeperframe = dev->timeperframe_vid_out;
1190 parm->parm.output.writebuffers = 1;
1191
1192 return 0;
1193 }
1194
1195 int vidioc_subscribe_event(struct v4l2_fh *fh,
1196 const struct v4l2_event_subscription *sub)
1197 {
1198 switch (sub->type) {
1199 case V4L2_EVENT_SOURCE_CHANGE:
1200 if (fh->vdev->vfl_dir == VFL_DIR_RX)
1201 return v4l2_src_change_event_subscribe(fh, sub);
1202 break;
1203 default:
1204 return v4l2_ctrl_subscribe_event(fh, sub);
1205 }
1206 return -EINVAL;
1207 }