1 // SPDX-License-Identifier: GPL-2.0-only
3 * vivid-vbi-cap.c - vbi capture support functions.
5 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
8 #include <linux/errno.h>
9 #include <linux/kernel.h>
10 #include <linux/videodev2.h>
11 #include <media/v4l2-common.h>
13 #include "vivid-core.h"
14 #include "vivid-kthread-cap.h"
15 #include "vivid-vbi-cap.h"
16 #include "vivid-vbi-gen.h"
18 static void vivid_sliced_vbi_cap_fill(struct vivid_dev *dev, unsigned seqnr)
20 struct vivid_vbi_gen_data *vbi_gen = &dev->vbi_gen;
21 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
23 vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr);
26 if (dev->loop_video) {
27 if (dev->vbi_out_have_wss) {
28 vbi_gen->data[12].data[0] = dev->vbi_out_wss[0];
29 vbi_gen->data[12].data[1] = dev->vbi_out_wss[1];
31 vbi_gen->data[12].id = 0;
34 switch (tpg_g_video_aspect(&dev->tpg)) {
35 case TPG_VIDEO_ASPECT_14X9_CENTRE:
36 vbi_gen->data[12].data[0] = 0x01;
38 case TPG_VIDEO_ASPECT_16X9_CENTRE:
39 vbi_gen->data[12].data[0] = 0x0b;
41 case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC:
42 vbi_gen->data[12].data[0] = 0x07;
44 case TPG_VIDEO_ASPECT_4X3:
46 vbi_gen->data[12].data[0] = 0x08;
50 } else if (dev->loop_video && is_60hz) {
51 if (dev->vbi_out_have_cc[0]) {
52 vbi_gen->data[0].data[0] = dev->vbi_out_cc[0][0];
53 vbi_gen->data[0].data[1] = dev->vbi_out_cc[0][1];
55 vbi_gen->data[0].id = 0;
57 if (dev->vbi_out_have_cc[1]) {
58 vbi_gen->data[1].data[0] = dev->vbi_out_cc[1][0];
59 vbi_gen->data[1].data[1] = dev->vbi_out_cc[1][1];
61 vbi_gen->data[1].id = 0;
66 static void vivid_g_fmt_vbi_cap(struct vivid_dev *dev, struct v4l2_vbi_format *vbi)
68 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
70 vbi->sampling_rate = 27000000;
72 vbi->samples_per_line = 1440;
73 vbi->sample_format = V4L2_PIX_FMT_GREY;
74 vbi->start[0] = is_60hz ? V4L2_VBI_ITU_525_F1_START + 9 : V4L2_VBI_ITU_625_F1_START + 5;
75 vbi->start[1] = is_60hz ? V4L2_VBI_ITU_525_F2_START + 9 : V4L2_VBI_ITU_625_F2_START + 5;
76 vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18;
77 vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0;
82 void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf)
84 struct v4l2_vbi_format vbi;
85 u8 *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
87 vivid_g_fmt_vbi_cap(dev, &vbi);
88 buf->vb.sequence = dev->vbi_cap_seq_count;
89 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
90 buf->vb.sequence /= 2;
92 vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
94 memset(vbuf, 0x10, vb2_plane_size(&buf->vb.vb2_buf, 0));
96 if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input]))
97 vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf);
101 void vivid_sliced_vbi_cap_process(struct vivid_dev *dev,
102 struct vivid_buffer *buf)
104 struct v4l2_sliced_vbi_data *vbuf =
105 vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
107 buf->vb.sequence = dev->vbi_cap_seq_count;
108 if (dev->field_cap == V4L2_FIELD_ALTERNATE)
109 buf->vb.sequence /= 2;
111 vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
113 memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0));
114 if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) {
117 for (i = 0; i < 25; i++)
118 vbuf[i] = dev->vbi_gen.data[i];
122 static int vbi_cap_queue_setup(struct vb2_queue *vq,
123 unsigned *nbuffers, unsigned *nplanes,
124 unsigned sizes[], struct device *alloc_devs[])
126 struct vivid_dev *dev = vb2_get_drv_priv(vq);
127 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
128 unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
129 36 * sizeof(struct v4l2_sliced_vbi_data) :
130 1440 * 2 * (is_60hz ? 12 : 18);
132 if (!vivid_is_sdtv_cap(dev))
137 if (vq->num_buffers + *nbuffers < 2)
138 *nbuffers = 2 - vq->num_buffers;
144 static int vbi_cap_buf_prepare(struct vb2_buffer *vb)
146 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
147 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
148 unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
149 36 * sizeof(struct v4l2_sliced_vbi_data) :
150 1440 * 2 * (is_60hz ? 12 : 18);
152 dprintk(dev, 1, "%s\n", __func__);
154 if (dev->buf_prepare_error) {
156 * Error injection: test what happens if buf_prepare() returns
159 dev->buf_prepare_error = false;
162 if (vb2_plane_size(vb, 0) < size) {
163 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
164 __func__, vb2_plane_size(vb, 0), size);
167 vb2_set_plane_payload(vb, 0, size);
172 static void vbi_cap_buf_queue(struct vb2_buffer *vb)
174 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
175 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
176 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
178 dprintk(dev, 1, "%s\n", __func__);
180 spin_lock(&dev->slock);
181 list_add_tail(&buf->list, &dev->vbi_cap_active);
182 spin_unlock(&dev->slock);
185 static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count)
187 struct vivid_dev *dev = vb2_get_drv_priv(vq);
190 dprintk(dev, 1, "%s\n", __func__);
191 dev->vbi_cap_seq_count = 0;
192 if (dev->start_streaming_error) {
193 dev->start_streaming_error = false;
196 err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming);
199 struct vivid_buffer *buf, *tmp;
201 list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) {
202 list_del(&buf->list);
203 vb2_buffer_done(&buf->vb.vb2_buf,
204 VB2_BUF_STATE_QUEUED);
210 /* abort streaming and wait for last buffer */
211 static void vbi_cap_stop_streaming(struct vb2_queue *vq)
213 struct vivid_dev *dev = vb2_get_drv_priv(vq);
215 dprintk(dev, 1, "%s\n", __func__);
216 vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming);
219 static void vbi_cap_buf_request_complete(struct vb2_buffer *vb)
221 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
223 v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vbi_cap);
226 const struct vb2_ops vivid_vbi_cap_qops = {
227 .queue_setup = vbi_cap_queue_setup,
228 .buf_prepare = vbi_cap_buf_prepare,
229 .buf_queue = vbi_cap_buf_queue,
230 .start_streaming = vbi_cap_start_streaming,
231 .stop_streaming = vbi_cap_stop_streaming,
232 .buf_request_complete = vbi_cap_buf_request_complete,
233 .wait_prepare = vb2_ops_wait_prepare,
234 .wait_finish = vb2_ops_wait_finish,
237 int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
238 struct v4l2_format *f)
240 struct vivid_dev *dev = video_drvdata(file);
241 struct v4l2_vbi_format *vbi = &f->fmt.vbi;
243 if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap)
246 vivid_g_fmt_vbi_cap(dev, vbi);
250 int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
251 struct v4l2_format *f)
253 struct vivid_dev *dev = video_drvdata(file);
254 int ret = vidioc_g_fmt_vbi_cap(file, priv, f);
258 if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
260 dev->stream_sliced_vbi_cap = false;
261 dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE;
265 void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set)
267 vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
268 vbi->service_set = service_set;
269 memset(vbi->service_lines, 0, sizeof(vbi->service_lines));
270 memset(vbi->reserved, 0, sizeof(vbi->reserved));
272 if (vbi->service_set == 0)
275 if (vbi->service_set & V4L2_SLICED_CAPTION_525) {
276 vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
277 vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
279 if (vbi->service_set & V4L2_SLICED_WSS_625) {
282 for (i = 7; i <= 18; i++)
283 vbi->service_lines[0][i] =
284 vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
285 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625;
289 int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
291 struct vivid_dev *dev = video_drvdata(file);
292 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
294 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
297 vivid_fill_service_lines(vbi, dev->service_set_cap);
301 int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
303 struct vivid_dev *dev = video_drvdata(file);
304 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
305 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
306 u32 service_set = vbi->service_set;
308 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
311 service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
312 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
313 vivid_fill_service_lines(vbi, service_set);
317 int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
319 struct vivid_dev *dev = video_drvdata(file);
320 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
321 int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt);
325 if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
327 dev->service_set_cap = vbi->service_set;
328 dev->stream_sliced_vbi_cap = true;
329 dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
333 int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap)
335 struct vivid_dev *dev = video_drvdata(file);
336 struct video_device *vdev = video_devdata(file);
339 if (vdev->vfl_dir == VFL_DIR_RX) {
340 is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
341 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap ||
342 cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
345 is_60hz = dev->std_out & V4L2_STD_525_60;
346 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out ||
347 cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
351 cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 :
352 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
354 cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
355 cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
359 for (i = 7; i <= 18; i++)
360 cap->service_lines[0][i] =
361 cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
362 cap->service_lines[0][23] = V4L2_SLICED_WSS_625;