Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 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 | |
| 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) { |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 40 | vbi_gen->data[12].data[0] = dev->vbi_out_wss[0]; |
| 41 | vbi_gen->data[12].data[1] = dev->vbi_out_wss[1]; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 42 | } else { |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 43 | vbi_gen->data[12].id = 0; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 44 | } |
| 45 | } else { |
| 46 | switch (tpg_g_video_aspect(&dev->tpg)) { |
| 47 | case TPG_VIDEO_ASPECT_14X9_CENTRE: |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 48 | vbi_gen->data[12].data[0] = 0x01; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 49 | break; |
| 50 | case TPG_VIDEO_ASPECT_16X9_CENTRE: |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 51 | vbi_gen->data[12].data[0] = 0x0b; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 52 | break; |
| 53 | case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC: |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 54 | vbi_gen->data[12].data[0] = 0x07; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 55 | break; |
| 56 | case TPG_VIDEO_ASPECT_4X3: |
| 57 | default: |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 58 | vbi_gen->data[12].data[0] = 0x08; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 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 | |
| 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; |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 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; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 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 | |
| 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, 0); |
| 98 | |
| 99 | vivid_g_fmt_vbi_cap(dev, &vbi); |
| 100 | buf->vb.v4l2_buf.sequence = dev->vbi_cap_seq_count; |
| 101 | if (dev->field_cap == V4L2_FIELD_ALTERNATE) |
| 102 | buf->vb.v4l2_buf.sequence /= 2; |
| 103 | |
| 104 | vivid_sliced_vbi_cap_fill(dev, buf->vb.v4l2_buf.sequence); |
| 105 | |
| 106 | memset(vbuf, 0x10, vb2_plane_size(&buf->vb, 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.v4l2_buf.timestamp); |
| 112 | buf->vb.v4l2_buf.timestamp.tv_sec += dev->time_wrap_offset; |
| 113 | } |
| 114 | |
| 115 | |
| 116 | void vivid_sliced_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf) |
| 117 | { |
| 118 | struct v4l2_sliced_vbi_data *vbuf = vb2_plane_vaddr(&buf->vb, 0); |
| 119 | |
| 120 | buf->vb.v4l2_buf.sequence = dev->vbi_cap_seq_count; |
| 121 | if (dev->field_cap == V4L2_FIELD_ALTERNATE) |
| 122 | buf->vb.v4l2_buf.sequence /= 2; |
| 123 | |
| 124 | vivid_sliced_vbi_cap_fill(dev, buf->vb.v4l2_buf.sequence); |
| 125 | |
| 126 | memset(vbuf, 0, vb2_plane_size(&buf->vb, 0)); |
| 127 | if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode)) { |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 128 | unsigned i; |
| 129 | |
| 130 | for (i = 0; i < 25; i++) |
| 131 | vbuf[i] = dev->vbi_gen.data[i]; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp); |
| 135 | buf->vb.v4l2_buf.timestamp.tv_sec += dev->time_wrap_offset; |
| 136 | } |
| 137 | |
| 138 | static int vbi_cap_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, |
| 139 | unsigned *nbuffers, unsigned *nplanes, |
| 140 | unsigned sizes[], void *alloc_ctxs[]) |
| 141 | { |
| 142 | struct vivid_dev *dev = vb2_get_drv_priv(vq); |
| 143 | bool is_60hz = dev->std_cap & V4L2_STD_525_60; |
| 144 | unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ? |
| 145 | 36 * sizeof(struct v4l2_sliced_vbi_data) : |
| 146 | 1440 * 2 * (is_60hz ? 12 : 18); |
| 147 | |
| 148 | if (!vivid_is_sdtv_cap(dev)) |
| 149 | return -EINVAL; |
| 150 | |
| 151 | sizes[0] = size; |
| 152 | |
| 153 | if (vq->num_buffers + *nbuffers < 2) |
| 154 | *nbuffers = 2 - vq->num_buffers; |
| 155 | |
| 156 | *nplanes = 1; |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | static int vbi_cap_buf_prepare(struct vb2_buffer *vb) |
| 161 | { |
| 162 | struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); |
| 163 | bool is_60hz = dev->std_cap & V4L2_STD_525_60; |
| 164 | unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ? |
| 165 | 36 * sizeof(struct v4l2_sliced_vbi_data) : |
| 166 | 1440 * 2 * (is_60hz ? 12 : 18); |
| 167 | |
| 168 | dprintk(dev, 1, "%s\n", __func__); |
| 169 | |
| 170 | if (dev->buf_prepare_error) { |
| 171 | /* |
| 172 | * Error injection: test what happens if buf_prepare() returns |
| 173 | * an error. |
| 174 | */ |
| 175 | dev->buf_prepare_error = false; |
| 176 | return -EINVAL; |
| 177 | } |
| 178 | if (vb2_plane_size(vb, 0) < size) { |
| 179 | dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n", |
| 180 | __func__, vb2_plane_size(vb, 0), size); |
| 181 | return -EINVAL; |
| 182 | } |
| 183 | vb2_set_plane_payload(vb, 0, size); |
| 184 | |
| 185 | return 0; |
| 186 | } |
| 187 | |
| 188 | static void vbi_cap_buf_queue(struct vb2_buffer *vb) |
| 189 | { |
| 190 | struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); |
| 191 | struct vivid_buffer *buf = container_of(vb, struct vivid_buffer, vb); |
| 192 | |
| 193 | dprintk(dev, 1, "%s\n", __func__); |
| 194 | |
| 195 | spin_lock(&dev->slock); |
| 196 | list_add_tail(&buf->list, &dev->vbi_cap_active); |
| 197 | spin_unlock(&dev->slock); |
| 198 | } |
| 199 | |
| 200 | static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count) |
| 201 | { |
| 202 | struct vivid_dev *dev = vb2_get_drv_priv(vq); |
| 203 | int err; |
| 204 | |
| 205 | dprintk(dev, 1, "%s\n", __func__); |
| 206 | dev->vbi_cap_seq_count = 0; |
| 207 | if (dev->start_streaming_error) { |
| 208 | dev->start_streaming_error = false; |
| 209 | err = -EINVAL; |
| 210 | } else { |
| 211 | err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming); |
| 212 | } |
| 213 | if (err) { |
| 214 | struct vivid_buffer *buf, *tmp; |
| 215 | |
| 216 | list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) { |
| 217 | list_del(&buf->list); |
| 218 | vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED); |
| 219 | } |
| 220 | } |
| 221 | return err; |
| 222 | } |
| 223 | |
| 224 | /* abort streaming and wait for last buffer */ |
| 225 | static void vbi_cap_stop_streaming(struct vb2_queue *vq) |
| 226 | { |
| 227 | struct vivid_dev *dev = vb2_get_drv_priv(vq); |
| 228 | |
| 229 | dprintk(dev, 1, "%s\n", __func__); |
| 230 | vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming); |
| 231 | } |
| 232 | |
| 233 | const struct vb2_ops vivid_vbi_cap_qops = { |
| 234 | .queue_setup = vbi_cap_queue_setup, |
| 235 | .buf_prepare = vbi_cap_buf_prepare, |
| 236 | .buf_queue = vbi_cap_buf_queue, |
| 237 | .start_streaming = vbi_cap_start_streaming, |
| 238 | .stop_streaming = vbi_cap_stop_streaming, |
| 239 | .wait_prepare = vivid_unlock, |
| 240 | .wait_finish = vivid_lock, |
| 241 | }; |
| 242 | |
| 243 | int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, |
| 244 | struct v4l2_format *f) |
| 245 | { |
| 246 | struct vivid_dev *dev = video_drvdata(file); |
| 247 | struct v4l2_vbi_format *vbi = &f->fmt.vbi; |
| 248 | |
| 249 | if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap) |
| 250 | return -EINVAL; |
| 251 | |
| 252 | vivid_g_fmt_vbi_cap(dev, vbi); |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, |
| 257 | struct v4l2_format *f) |
| 258 | { |
| 259 | struct vivid_dev *dev = video_drvdata(file); |
| 260 | int ret = vidioc_g_fmt_vbi_cap(file, priv, f); |
| 261 | |
| 262 | if (ret) |
| 263 | return ret; |
| 264 | if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q)) |
| 265 | return -EBUSY; |
| 266 | dev->stream_sliced_vbi_cap = false; |
| 267 | dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE; |
| 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set) |
| 272 | { |
| 273 | vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36; |
| 274 | vbi->service_set = service_set; |
| 275 | memset(vbi->service_lines, 0, sizeof(vbi->service_lines)); |
| 276 | memset(vbi->reserved, 0, sizeof(vbi->reserved)); |
| 277 | |
| 278 | if (vbi->service_set == 0) |
| 279 | return; |
| 280 | |
| 281 | if (vbi->service_set & V4L2_SLICED_CAPTION_525) { |
| 282 | vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525; |
| 283 | vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525; |
| 284 | } |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 285 | if (vbi->service_set & V4L2_SLICED_WSS_625) { |
| 286 | unsigned i; |
| 287 | |
| 288 | for (i = 7; i <= 18; i++) |
| 289 | vbi->service_lines[0][i] = |
| 290 | vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 291 | vbi->service_lines[0][23] = V4L2_SLICED_WSS_625; |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 292 | } |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) |
| 296 | { |
| 297 | struct vivid_dev *dev = video_drvdata(file); |
| 298 | struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; |
| 299 | |
| 300 | if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap) |
| 301 | return -EINVAL; |
| 302 | |
| 303 | vivid_fill_service_lines(vbi, dev->service_set_cap); |
| 304 | return 0; |
| 305 | } |
| 306 | |
| 307 | int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) |
| 308 | { |
| 309 | struct vivid_dev *dev = video_drvdata(file); |
| 310 | struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; |
| 311 | bool is_60hz = dev->std_cap & V4L2_STD_525_60; |
| 312 | u32 service_set = vbi->service_set; |
| 313 | |
| 314 | if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap) |
| 315 | return -EINVAL; |
| 316 | |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 317 | service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 : |
| 318 | V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 319 | vivid_fill_service_lines(vbi, service_set); |
| 320 | return 0; |
| 321 | } |
| 322 | |
| 323 | int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) |
| 324 | { |
| 325 | struct vivid_dev *dev = video_drvdata(file); |
| 326 | struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; |
| 327 | int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt); |
| 328 | |
| 329 | if (ret) |
| 330 | return ret; |
| 331 | if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q)) |
| 332 | return -EBUSY; |
| 333 | dev->service_set_cap = vbi->service_set; |
| 334 | dev->stream_sliced_vbi_cap = true; |
| 335 | dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE; |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap) |
| 340 | { |
| 341 | struct vivid_dev *dev = video_drvdata(file); |
| 342 | struct video_device *vdev = video_devdata(file); |
| 343 | bool is_60hz; |
| 344 | |
| 345 | if (vdev->vfl_dir == VFL_DIR_RX) { |
| 346 | is_60hz = dev->std_cap & V4L2_STD_525_60; |
| 347 | if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap || |
| 348 | cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) |
| 349 | return -EINVAL; |
| 350 | } else { |
| 351 | is_60hz = dev->std_out & V4L2_STD_525_60; |
| 352 | if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out || |
| 353 | cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) |
| 354 | return -EINVAL; |
| 355 | } |
| 356 | |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 357 | cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 : |
| 358 | V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 359 | if (is_60hz) { |
| 360 | cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525; |
| 361 | cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525; |
| 362 | } else { |
Hans Verkuil | 62f2872 | 2014-09-20 06:11:44 -0300 | [diff] [blame] | 363 | unsigned i; |
| 364 | |
| 365 | for (i = 7; i <= 18; i++) |
| 366 | cap->service_lines[0][i] = |
| 367 | cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B; |
Hans Verkuil | 7bb70ca | 2014-08-25 07:56:49 -0300 | [diff] [blame] | 368 | cap->service_lines[0][23] = V4L2_SLICED_WSS_625; |
| 369 | } |
| 370 | return 0; |
| 371 | } |