1 /*
2 * vivid-vbi-cap.c - vbi 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/videodev2.h>
23 #include <media/v4l2-common.h>
24
25 #include "vivid-core.h"
26 #include "vivid-kthread-cap.h"
27 #include "vivid-vbi-cap.h"
28 #include "vivid-vbi-gen.h"
29
vivid_sliced_vbi_cap_fill(struct vivid_dev * dev,unsigned seqnr)30 static void vivid_sliced_vbi_cap_fill(struct vivid_dev *dev, unsigned seqnr)
31 {
32 struct vivid_vbi_gen_data *vbi_gen = &dev->vbi_gen;
33 bool is_60hz = dev->std_cap & V4L2_STD_525_60;
34
35 vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr);
36
37 if (!is_60hz) {
38 if (dev->loop_video) {
39 if (dev->vbi_out_have_wss) {
40 vbi_gen->data[12].data[0] = dev->vbi_out_wss[0];
41 vbi_gen->data[12].data[1] = dev->vbi_out_wss[1];
42 } else {
43 vbi_gen->data[12].id = 0;
44 }
45 } else {
46 switch (tpg_g_video_aspect(&dev->tpg)) {
47 case TPG_VIDEO_ASPECT_14X9_CENTRE:
48 vbi_gen->data[12].data[0] = 0x01;
49 break;
50 case TPG_VIDEO_ASPECT_16X9_CENTRE:
51 vbi_gen->data[12].data[0] = 0x0b;
52 break;
53 case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC:
54 vbi_gen->data[12].data[0] = 0x07;
55 break;
56 case TPG_VIDEO_ASPECT_4X3:
57 default:
58 vbi_gen->data[12].data[0] = 0x08;
59 break;
60 }
61 }
62 } else if (dev->loop_video && is_60hz) {
63 if (dev->vbi_out_have_cc[0]) {
64 vbi_gen->data[0].data[0] = dev->vbi_out_cc[0][0];
65 vbi_gen->data[0].data[1] = dev->vbi_out_cc[0][1];
66 } else {
67 vbi_gen->data[0].id = 0;
68 }
69 if (dev->vbi_out_have_cc[1]) {
70 vbi_gen->data[1].data[0] = dev->vbi_out_cc[1][0];
71 vbi_gen->data[1].data[1] = dev->vbi_out_cc[1][1];
72 } else {
73 vbi_gen->data[1].id = 0;
74 }
75 }
76 }
77
vivid_g_fmt_vbi_cap(struct vivid_dev * dev,struct v4l2_vbi_format * vbi)78 static void vivid_g_fmt_vbi_cap(struct vivid_dev *dev, struct v4l2_vbi_format *vbi)
79 {
80 bool is_60hz = dev->std_cap & V4L2_STD_525_60;
81
82 vbi->sampling_rate = 27000000;
83 vbi->offset = 24;
84 vbi->samples_per_line = 1440;
85 vbi->sample_format = V4L2_PIX_FMT_GREY;
86 vbi->start[0] = is_60hz ? V4L2_VBI_ITU_525_F1_START + 9 : V4L2_VBI_ITU_625_F1_START + 5;
87 vbi->start[1] = is_60hz ? V4L2_VBI_ITU_525_F2_START + 9 : V4L2_VBI_ITU_625_F2_START + 5;
88 vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18;
89 vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0;
90 vbi->reserved[0] = 0;
91 vbi->reserved[1] = 0;
92 }
93
vivid_raw_vbi_cap_process(struct vivid_dev * dev,struct vivid_buffer * buf)94 void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf)
95 {
96 struct v4l2_vbi_format vbi;
97 u8 *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
98
99 vivid_g_fmt_vbi_cap(dev, &vbi);
100 buf->vb.sequence = dev->vbi_cap_seq_count;
101 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
102 buf->vb.sequence /= 2;
103
104 vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
105
106 memset(vbuf, 0x10, vb2_plane_size(&buf->vb.vb2_buf, 0));
107
108 if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode))
109 vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf);
110
111 v4l2_get_timestamp(&buf->vb.timestamp);
112 buf->vb.timestamp.tv_sec += dev->time_wrap_offset;
113 }
114
115
vivid_sliced_vbi_cap_process(struct vivid_dev * dev,struct vivid_buffer * buf)116 void vivid_sliced_vbi_cap_process(struct vivid_dev *dev,
117 struct vivid_buffer *buf)
118 {
119 struct v4l2_sliced_vbi_data *vbuf =
120 vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
121
122 buf->vb.sequence = dev->vbi_cap_seq_count;
123 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
124 buf->vb.sequence /= 2;
125
126 vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
127
128 memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0));
129 if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
130 unsigned i;
131
132 for (i = 0; i < 25; i++)
133 vbuf[i] = dev->vbi_gen.data[i];
134 }
135
136 v4l2_get_timestamp(&buf->vb.timestamp);
137 buf->vb.timestamp.tv_sec += dev->time_wrap_offset;
138 }
139
vbi_cap_queue_setup(struct vb2_queue * vq,const void * parg,unsigned * nbuffers,unsigned * nplanes,unsigned sizes[],void * alloc_ctxs[])140 static int vbi_cap_queue_setup(struct vb2_queue *vq, const void *parg,
141 unsigned *nbuffers, unsigned *nplanes,
142 unsigned sizes[], void *alloc_ctxs[])
143 {
144 struct vivid_dev *dev = vb2_get_drv_priv(vq);
145 bool is_60hz = dev->std_cap & V4L2_STD_525_60;
146 unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
147 36 * sizeof(struct v4l2_sliced_vbi_data) :
148 1440 * 2 * (is_60hz ? 12 : 18);
149
150 if (!vivid_is_sdtv_cap(dev))
151 return -EINVAL;
152
153 sizes[0] = size;
154
155 if (vq->num_buffers + *nbuffers < 2)
156 *nbuffers = 2 - vq->num_buffers;
157
158 *nplanes = 1;
159 return 0;
160 }
161
vbi_cap_buf_prepare(struct vb2_buffer * vb)162 static int vbi_cap_buf_prepare(struct vb2_buffer *vb)
163 {
164 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
165 bool is_60hz = dev->std_cap & V4L2_STD_525_60;
166 unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
167 36 * sizeof(struct v4l2_sliced_vbi_data) :
168 1440 * 2 * (is_60hz ? 12 : 18);
169
170 dprintk(dev, 1, "%s\n", __func__);
171
172 if (dev->buf_prepare_error) {
173 /*
174 * Error injection: test what happens if buf_prepare() returns
175 * an error.
176 */
177 dev->buf_prepare_error = false;
178 return -EINVAL;
179 }
180 if (vb2_plane_size(vb, 0) < size) {
181 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
182 __func__, vb2_plane_size(vb, 0), size);
183 return -EINVAL;
184 }
185 vb2_set_plane_payload(vb, 0, size);
186
187 return 0;
188 }
189
vbi_cap_buf_queue(struct vb2_buffer * vb)190 static void vbi_cap_buf_queue(struct vb2_buffer *vb)
191 {
192 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
193 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
194 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
195
196 dprintk(dev, 1, "%s\n", __func__);
197
198 spin_lock(&dev->slock);
199 list_add_tail(&buf->list, &dev->vbi_cap_active);
200 spin_unlock(&dev->slock);
201 }
202
vbi_cap_start_streaming(struct vb2_queue * vq,unsigned count)203 static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count)
204 {
205 struct vivid_dev *dev = vb2_get_drv_priv(vq);
206 int err;
207
208 dprintk(dev, 1, "%s\n", __func__);
209 dev->vbi_cap_seq_count = 0;
210 if (dev->start_streaming_error) {
211 dev->start_streaming_error = false;
212 err = -EINVAL;
213 } else {
214 err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming);
215 }
216 if (err) {
217 struct vivid_buffer *buf, *tmp;
218
219 list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) {
220 list_del(&buf->list);
221 vb2_buffer_done(&buf->vb.vb2_buf,
222 VB2_BUF_STATE_QUEUED);
223 }
224 }
225 return err;
226 }
227
228 /* abort streaming and wait for last buffer */
vbi_cap_stop_streaming(struct vb2_queue * vq)229 static void vbi_cap_stop_streaming(struct vb2_queue *vq)
230 {
231 struct vivid_dev *dev = vb2_get_drv_priv(vq);
232
233 dprintk(dev, 1, "%s\n", __func__);
234 vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming);
235 }
236
237 const struct vb2_ops vivid_vbi_cap_qops = {
238 .queue_setup = vbi_cap_queue_setup,
239 .buf_prepare = vbi_cap_buf_prepare,
240 .buf_queue = vbi_cap_buf_queue,
241 .start_streaming = vbi_cap_start_streaming,
242 .stop_streaming = vbi_cap_stop_streaming,
243 .wait_prepare = vb2_ops_wait_prepare,
244 .wait_finish = vb2_ops_wait_finish,
245 };
246
vidioc_g_fmt_vbi_cap(struct file * file,void * priv,struct v4l2_format * f)247 int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
248 struct v4l2_format *f)
249 {
250 struct vivid_dev *dev = video_drvdata(file);
251 struct v4l2_vbi_format *vbi = &f->fmt.vbi;
252
253 if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap)
254 return -EINVAL;
255
256 vivid_g_fmt_vbi_cap(dev, vbi);
257 return 0;
258 }
259
vidioc_s_fmt_vbi_cap(struct file * file,void * priv,struct v4l2_format * f)260 int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
261 struct v4l2_format *f)
262 {
263 struct vivid_dev *dev = video_drvdata(file);
264 int ret = vidioc_g_fmt_vbi_cap(file, priv, f);
265
266 if (ret)
267 return ret;
268 if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
269 return -EBUSY;
270 dev->stream_sliced_vbi_cap = false;
271 dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE;
272 return 0;
273 }
274
vivid_fill_service_lines(struct v4l2_sliced_vbi_format * vbi,u32 service_set)275 void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set)
276 {
277 vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
278 vbi->service_set = service_set;
279 memset(vbi->service_lines, 0, sizeof(vbi->service_lines));
280 memset(vbi->reserved, 0, sizeof(vbi->reserved));
281
282 if (vbi->service_set == 0)
283 return;
284
285 if (vbi->service_set & V4L2_SLICED_CAPTION_525) {
286 vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
287 vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
288 }
289 if (vbi->service_set & V4L2_SLICED_WSS_625) {
290 unsigned i;
291
292 for (i = 7; i <= 18; i++)
293 vbi->service_lines[0][i] =
294 vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
295 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625;
296 }
297 }
298
vidioc_g_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)299 int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
300 {
301 struct vivid_dev *dev = video_drvdata(file);
302 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
303
304 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
305 return -EINVAL;
306
307 vivid_fill_service_lines(vbi, dev->service_set_cap);
308 return 0;
309 }
310
vidioc_try_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)311 int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
312 {
313 struct vivid_dev *dev = video_drvdata(file);
314 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
315 bool is_60hz = dev->std_cap & V4L2_STD_525_60;
316 u32 service_set = vbi->service_set;
317
318 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
319 return -EINVAL;
320
321 service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
322 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
323 vivid_fill_service_lines(vbi, service_set);
324 return 0;
325 }
326
vidioc_s_fmt_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_format * fmt)327 int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
328 {
329 struct vivid_dev *dev = video_drvdata(file);
330 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
331 int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt);
332
333 if (ret)
334 return ret;
335 if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
336 return -EBUSY;
337 dev->service_set_cap = vbi->service_set;
338 dev->stream_sliced_vbi_cap = true;
339 dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
340 return 0;
341 }
342
vidioc_g_sliced_vbi_cap(struct file * file,void * fh,struct v4l2_sliced_vbi_cap * cap)343 int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap)
344 {
345 struct vivid_dev *dev = video_drvdata(file);
346 struct video_device *vdev = video_devdata(file);
347 bool is_60hz;
348
349 if (vdev->vfl_dir == VFL_DIR_RX) {
350 is_60hz = dev->std_cap & V4L2_STD_525_60;
351 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap ||
352 cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
353 return -EINVAL;
354 } else {
355 is_60hz = dev->std_out & V4L2_STD_525_60;
356 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out ||
357 cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
358 return -EINVAL;
359 }
360
361 cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 :
362 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
363 if (is_60hz) {
364 cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
365 cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
366 } else {
367 unsigned i;
368
369 for (i = 7; i <= 18; i++)
370 cap->service_lines[0][i] =
371 cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
372 cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
373 }
374 return 0;
375 }
376