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8#include <linux/errno.h>
9#include <linux/kernel.h>
10#include <linux/videodev2.h>
11#include <media/v4l2-common.h>
12
13#include "vivid-core.h"
14#include "vivid-kthread-out.h"
15#include "vivid-vbi-out.h"
16#include "vivid-vbi-cap.h"
17
18static int vbi_out_queue_setup(struct vb2_queue *vq,
19 unsigned *nbuffers, unsigned *nplanes,
20 unsigned sizes[], struct device *alloc_devs[])
21{
22 struct vivid_dev *dev = vb2_get_drv_priv(vq);
23 bool is_60hz = dev->std_out & V4L2_STD_525_60;
24 unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ?
25 36 * sizeof(struct v4l2_sliced_vbi_data) :
26 1440 * 2 * (is_60hz ? 12 : 18);
27
28 if (!vivid_is_svid_out(dev))
29 return -EINVAL;
30
31 sizes[0] = size;
32
33 if (vq->num_buffers + *nbuffers < 2)
34 *nbuffers = 2 - vq->num_buffers;
35
36 *nplanes = 1;
37 return 0;
38}
39
40static int vbi_out_buf_prepare(struct vb2_buffer *vb)
41{
42 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
43 bool is_60hz = dev->std_out & V4L2_STD_525_60;
44 unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ?
45 36 * sizeof(struct v4l2_sliced_vbi_data) :
46 1440 * 2 * (is_60hz ? 12 : 18);
47
48 dprintk(dev, 1, "%s\n", __func__);
49
50 if (dev->buf_prepare_error) {
51
52
53
54
55 dev->buf_prepare_error = false;
56 return -EINVAL;
57 }
58 if (vb2_plane_size(vb, 0) < size) {
59 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
60 __func__, vb2_plane_size(vb, 0), size);
61 return -EINVAL;
62 }
63 vb2_set_plane_payload(vb, 0, size);
64
65 return 0;
66}
67
68static void vbi_out_buf_queue(struct vb2_buffer *vb)
69{
70 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
71 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
72 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
73
74 dprintk(dev, 1, "%s\n", __func__);
75
76 spin_lock(&dev->slock);
77 list_add_tail(&buf->list, &dev->vbi_out_active);
78 spin_unlock(&dev->slock);
79}
80
81static int vbi_out_start_streaming(struct vb2_queue *vq, unsigned count)
82{
83 struct vivid_dev *dev = vb2_get_drv_priv(vq);
84 int err;
85
86 dprintk(dev, 1, "%s\n", __func__);
87 dev->vbi_out_seq_count = 0;
88 if (dev->start_streaming_error) {
89 dev->start_streaming_error = false;
90 err = -EINVAL;
91 } else {
92 err = vivid_start_generating_vid_out(dev, &dev->vbi_out_streaming);
93 }
94 if (err) {
95 struct vivid_buffer *buf, *tmp;
96
97 list_for_each_entry_safe(buf, tmp, &dev->vbi_out_active, list) {
98 list_del(&buf->list);
99 vb2_buffer_done(&buf->vb.vb2_buf,
100 VB2_BUF_STATE_QUEUED);
101 }
102 }
103 return err;
104}
105
106
107static void vbi_out_stop_streaming(struct vb2_queue *vq)
108{
109 struct vivid_dev *dev = vb2_get_drv_priv(vq);
110
111 dprintk(dev, 1, "%s\n", __func__);
112 vivid_stop_generating_vid_out(dev, &dev->vbi_out_streaming);
113 dev->vbi_out_have_wss = false;
114 dev->vbi_out_have_cc[0] = false;
115 dev->vbi_out_have_cc[1] = false;
116}
117
118const struct vb2_ops vivid_vbi_out_qops = {
119 .queue_setup = vbi_out_queue_setup,
120 .buf_prepare = vbi_out_buf_prepare,
121 .buf_queue = vbi_out_buf_queue,
122 .start_streaming = vbi_out_start_streaming,
123 .stop_streaming = vbi_out_stop_streaming,
124 .wait_prepare = vb2_ops_wait_prepare,
125 .wait_finish = vb2_ops_wait_finish,
126};
127
128int vidioc_g_fmt_vbi_out(struct file *file, void *priv,
129 struct v4l2_format *f)
130{
131 struct vivid_dev *dev = video_drvdata(file);
132 struct v4l2_vbi_format *vbi = &f->fmt.vbi;
133 bool is_60hz = dev->std_out & V4L2_STD_525_60;
134
135 if (!vivid_is_svid_out(dev) || !dev->has_raw_vbi_out)
136 return -EINVAL;
137
138 vbi->sampling_rate = 25000000;
139 vbi->offset = 24;
140 vbi->samples_per_line = 1440;
141 vbi->sample_format = V4L2_PIX_FMT_GREY;
142 vbi->start[0] = is_60hz ? V4L2_VBI_ITU_525_F1_START + 9 : V4L2_VBI_ITU_625_F1_START + 5;
143 vbi->start[1] = is_60hz ? V4L2_VBI_ITU_525_F2_START + 9 : V4L2_VBI_ITU_625_F2_START + 5;
144 vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18;
145 vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0;
146 vbi->reserved[0] = 0;
147 vbi->reserved[1] = 0;
148 return 0;
149}
150
151int vidioc_s_fmt_vbi_out(struct file *file, void *priv,
152 struct v4l2_format *f)
153{
154 struct vivid_dev *dev = video_drvdata(file);
155 int ret = vidioc_g_fmt_vbi_out(file, priv, f);
156
157 if (ret)
158 return ret;
159 if (vb2_is_busy(&dev->vb_vbi_out_q))
160 return -EBUSY;
161 dev->stream_sliced_vbi_out = false;
162 dev->vbi_out_dev.queue->type = V4L2_BUF_TYPE_VBI_OUTPUT;
163 return 0;
164}
165
166int vidioc_g_fmt_sliced_vbi_out(struct file *file, void *fh, struct v4l2_format *fmt)
167{
168 struct vivid_dev *dev = video_drvdata(file);
169 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
170
171 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out)
172 return -EINVAL;
173
174 vivid_fill_service_lines(vbi, dev->service_set_out);
175 return 0;
176}
177
178int vidioc_try_fmt_sliced_vbi_out(struct file *file, void *fh, struct v4l2_format *fmt)
179{
180 struct vivid_dev *dev = video_drvdata(file);
181 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
182 bool is_60hz = dev->std_out & V4L2_STD_525_60;
183 u32 service_set = vbi->service_set;
184
185 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out)
186 return -EINVAL;
187
188 service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
189 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
190 vivid_fill_service_lines(vbi, service_set);
191 return 0;
192}
193
194int vidioc_s_fmt_sliced_vbi_out(struct file *file, void *fh,
195 struct v4l2_format *fmt)
196{
197 struct vivid_dev *dev = video_drvdata(file);
198 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
199 int ret = vidioc_try_fmt_sliced_vbi_out(file, fh, fmt);
200
201 if (ret)
202 return ret;
203 if (vb2_is_busy(&dev->vb_vbi_out_q))
204 return -EBUSY;
205 dev->service_set_out = vbi->service_set;
206 dev->stream_sliced_vbi_out = true;
207 dev->vbi_out_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_OUTPUT;
208 return 0;
209}
210
211void vivid_sliced_vbi_out_process(struct vivid_dev *dev,
212 struct vivid_buffer *buf)
213{
214 struct v4l2_sliced_vbi_data *vbi =
215 vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
216 unsigned elems =
217 vb2_get_plane_payload(&buf->vb.vb2_buf, 0) / sizeof(*vbi);
218
219 dev->vbi_out_have_cc[0] = false;
220 dev->vbi_out_have_cc[1] = false;
221 dev->vbi_out_have_wss = false;
222 while (elems--) {
223 switch (vbi->id) {
224 case V4L2_SLICED_CAPTION_525:
225 if ((dev->std_out & V4L2_STD_525_60) && vbi->line == 21) {
226 dev->vbi_out_have_cc[!!vbi->field] = true;
227 dev->vbi_out_cc[!!vbi->field][0] = vbi->data[0];
228 dev->vbi_out_cc[!!vbi->field][1] = vbi->data[1];
229 }
230 break;
231 case V4L2_SLICED_WSS_625:
232 if ((dev->std_out & V4L2_STD_625_50) &&
233 vbi->field == 0 && vbi->line == 23) {
234 dev->vbi_out_have_wss = true;
235 dev->vbi_out_wss[0] = vbi->data[0];
236 dev->vbi_out_wss[1] = vbi->data[1];
237 }
238 break;
239 }
240 vbi++;
241 }
242}
243
