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, 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 116void 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)) { 128 unsigned i; 129 130 for (i = 0; i < 25; i++) 131 vbuf[i] = dev->vbi_gen.data[i]; 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 138static 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 160static 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 188static 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 200static 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 */ 225static 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 233const 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 = vb2_ops_wait_prepare, 240 .wait_finish = vb2_ops_wait_finish, 241}; 242 243int 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 256int 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 271void 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 } 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; 291 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625; 292 } 293} 294 295int 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 307int 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; 316 317 service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 : 318 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B; 319 vivid_fill_service_lines(vbi, service_set); 320 return 0; 321} 322 323int 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 339int 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 } 356 357 cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 : 358 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B; 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 { 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; 368 cap->service_lines[0][23] = V4L2_SLICED_WSS_625; 369 } 370 return 0; 371} 372