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 30static 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 78static 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 94void 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 116void 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 140static 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 162static 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 190static 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 203static 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 */ 229static 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 237const 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 247int 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 260int 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 275void 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 299int 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 311int 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 327int 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 343int 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