cinelerra-5.0/cinelerra/devicev4l2base.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22
  23
  24 #include "../hvirtual_config.h"
  25 #include "bctimer.h"
  26 #include "channel.h"
  27 #include "chantables.h"
  28 #include "clip.h"
  29 #include "condition.h"
  30 #include "devicev4l2base.h"
  31 #include "mutex.h"
  32 #include "picture.h"
  33 #include "preferences.h"
  34 #include "recordconfig.h"
  35 #include "videodevice.h"
  36
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <stdint.h>
  40 #include <unistd.h>
  41 #include <string.h>
  42 #include <errno.h>
  43 #include <fcntl.h>
  44
  45 #ifdef HAVE_VIDEO4LINUX2
  46 #include <linux/videodev2.h>
  47 #endif
  48 #include <sys/ioctl.h>
  49 #include <sys/mman.h>
  50
  51
  52 DeviceV4L2BufferQ::
  53 DeviceV4L2BufferQ(int qsize)
  54 {
  55         reset();
  56         bfr_lock = new Mutex("DeviceV4L2BufferQ::bfr_lock");
  57         buffers = new int[limit=qsize];
  58 }
  59
  60 DeviceV4L2BufferQ::
  61 ~DeviceV4L2BufferQ()
  62 {
  63         delete [] buffers;
  64         delete bfr_lock;
  65 }
  66
  67 int DeviceV4L2BufferQ::q(int bfr)
  68 {
  69         int result = 0;
  70         bfr_lock->lock("DeviceV4L2Buffer::q");
  71         int in1 = in+1;
  72         if( in1 >= limit ) in1 = 0;
  73         if( in1 != out )
  74         {
  75                 buffers[in] = bfr;
  76                 in = in1;
  77         }
  78         else
  79                 result = -1;
  80         bfr_lock->unlock();
  81         return result;
  82 }
  83
  84 int DeviceV4L2BufferQ::dq(Condition *time_lock, int time_out)
  85 {
  86         int result = -1;
  87         bfr_lock->lock(" DeviceV4L2Buffer::dq 0");
  88         time_lock->reset();
  89         if( in == out )
  90         {
  91                 bfr_lock->unlock();
  92                 if( time_lock->timed_lock(time_out, "DeviceV4L2Buffer::dq 1") )
  93                         printf("DeviceV4L2Buffer::wait time_out\n");
  94                 bfr_lock->lock(" DeviceV4L2Buffer::dq 2");
  95         }
  96         if( in != out )
  97         {
  98                 result = buffers[out];
  99                 int out1 = out+1;
 100                 if( out1 >= limit ) out1 = 0;
 101                 out = out1;
 102         }
 103         bfr_lock->unlock();
 104         return result;
 105 }
 106
 107 int DeviceV4L2BufferQ::dq()
 108 {
 109         int result = -1;
 110         bfr_lock->lock(" DeviceV4L2Buffer::dq");
 111         if( in != out )
 112         {
 113                 result = buffers[out];
 114                 int out1 = out+1;
 115                 if( out1 >= limit ) out1 = 0;
 116                 out = out1;
 117         }
 118         bfr_lock->unlock();
 119         return result;
 120 }
 121
 122
 123
 124 DeviceV4L2Base::DeviceV4L2Base()
 125  : Thread(1, 0, 0)
 126 {
 127         v4l2_lock = new Mutex("DeviceV4L2Input::v4l2_lock", 0);
 128         qbfrs_lock = new Mutex("DeviceV4L2Base::qbfrs_lock");
 129         video_lock = new Condition(0, "DeviceV4L2Base::video_lock", 1);
 130         dev_fd = -1;
 131         color_model = -1;
 132         device_buffers = 0;
 133         device_channel = 0;
 134         total_buffers = 0;
 135         streamon = 0;
 136         dev_status = 0;
 137         opened = 0;
 138         q_bfrs = 0;
 139         done = 0;
 140         put_thread = 0;
 141 }
 142
 143 DeviceV4L2Base::~DeviceV4L2Base()
 144 {
 145         close_dev();
 146         delete video_lock;
 147         delete qbfrs_lock;
 148         delete v4l2_lock;
 149 }
 150
 151
 152
 153 DeviceV4L2Put::DeviceV4L2Put(DeviceV4L2Base *v4l2)
 154  : Thread(1, 0, 0)
 155 {
 156         this->v4l2 = v4l2;
 157         done = 0;
 158         putq = new DeviceV4L2BufferQ(256);
 159         buffer_lock = new Condition(0, "DeviceV4L2Put::buffer_lock");
 160 }
 161
 162 DeviceV4L2Put::~DeviceV4L2Put()
 163 {
 164         if(Thread::running())
 165         {
 166                 done = 1;
 167                 buffer_lock->unlock();
 168                 Thread::cancel();
 169                 Thread::join();
 170         }
 171         delete buffer_lock;
 172         delete putq;
 173 }
 174
 175
 176 void DeviceV4L2Put::run()
 177 {
 178         while(!done)
 179         {
 180                 buffer_lock->lock("DeviceV4L2Put::run");
 181                 if(done) break;
 182                 int bfr = putq->dq();
 183                 if( bfr < 0 ) continue;
 184                 struct v4l2_buffer arg;
 185                 memset(&arg, 0, sizeof(arg));
 186                 arg.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 187                 arg.index = bfr;
 188                 arg.memory = V4L2_MEMORY_MMAP;
 189
 190                 Thread::enable_cancel();
 191                 v4l2->qbfrs_lock->lock("DeviceV4L2Put::run");
 192 // This locks up if there's no signal.
 193                 if( v4l2->vioctl(VIDIOC_QBUF, &arg) < 0 )
 194                         perror("DeviceV4L2Put::run 1 VIDIOC_QBUF");
 195                 else
 196                         ++v4l2->q_bfrs;
 197                 v4l2->qbfrs_lock->unlock();
 198                 Thread::disable_cancel();
 199         }
 200 }
 201
 202
 203
 204
 205 int DeviceV4L2Base::get_sources()
 206 {
 207         v4l2_lock->lock("DeviceV4L2Base::get_sources");
 208         VideoDevice *video_device = v4l2_device();
 209         if( !video_device ) return 1;
 210         const char *dev_path = video_device->in_config->get_path();
 211         int vfd = open(dev_path, O_RDWR+O_CLOEXEC);
 212         if(vfd < 0)
 213         {
 214                 perror("DeviceV4L2Base::get_sources open failed");
 215                 printf("DeviceV4L2Base::get_sources path: %s\n", dev_path);
 216                 return 1;
 217         }
 218
 219 // Get the Inputs
 220
 221         for(int i = 0; i < 20; ++i)
 222         {
 223                 struct v4l2_input arg;
 224                 memset(&arg, 0, sizeof(arg));
 225                 arg.index = i;
 226
 227                 if(ioctl(vfd, VIDIOC_ENUMINPUT, &arg) < 0) break;
 228                 Channel *channel = video_device->new_input_source((char*)arg.name);
 229                 channel->device_index = i;
 230                 channel->tuner = arg.type == V4L2_INPUT_TYPE_TUNER ? arg.tuner : -1;
 231         }
 232
 233 // Get the picture controls
 234         for(int i = V4L2_CID_BASE; i < V4L2_CID_LASTP1; i++)
 235         {
 236                 struct v4l2_queryctrl arg;
 237                 memset(&arg, 0, sizeof(arg));
 238                 arg.id = i;
 239 // This returns errors for unsupported controls which is what we want.
 240                 if(!ioctl(vfd, VIDIOC_QUERYCTRL, &arg))
 241                 {
 242 // Test if control exists already
 243                         if(!video_device->picture->get_item((const char*)arg.name, arg.id))
 244                         {
 245 // Add control
 246                                 PictureItem *item = video_device->picture->new_item((const char*)arg.name);
 247                                 item->device_id = arg.id;
 248                                 item->min = arg.minimum;
 249                                 item->max = arg.maximum;
 250                                 item->step = arg.step;
 251                                 item->default_ = arg.default_value;
 252                                 item->type = arg.type;
 253                                 item->value = arg.default_value;
 254                         }
 255                 }
 256         }
 257
 258 // Load defaults for picture controls
 259         video_device->picture->load_defaults();
 260
 261         close(vfd);
 262         v4l2_lock->unlock();
 263         return 0;
 264 }
 265
 266 int DeviceV4L2Base::vioctl(unsigned long int req, void *arg)
 267 {
 268         int result = ioctl(dev_fd, req, arg);
 269         return result;
 270 }
 271
 272 int DeviceV4L2Base::v4l2_open(int color_model)
 273 {
 274         VideoDevice *video_device = v4l2_device();
 275         if( !video_device ) return 1;
 276
 277         struct v4l2_capability cap;
 278         memset(&cap, 0, sizeof(cap));
 279         if(vioctl(VIDIOC_QUERYCAP, &cap))
 280                 perror("DeviceV4L2Base::v4l2_open VIDIOC_QUERYCAP");
 281
 282 // printf("DeviceV4L2Base::v4l2_open dev_fd=%d driver=%s card=%s bus_info=%s version=%d\n",
 283 // dev_fd(), cap.driver, cap.card, cap.bus_info, cap.version);
 284 // printf("    ");
 285 // if( (cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) ) printf("VIDEO_CAPTURE ");
 286 // if( (cap.capabilities & V4L2_CAP_VIDEO_OUTPUT)  ) printf("VIDEO_OUTPUT ");
 287 // if( (cap.capabilities & V4L2_CAP_VIDEO_OVERLAY) ) printf("VIDEO_OVERLAY ");
 288 // if( (cap.capabilities & V4L2_CAP_VBI_CAPTURE)   ) printf("VBI_CAPTURE ");
 289 // if( (cap.capabilities & V4L2_CAP_VBI_OUTPUT)    ) printf("VBI_OUTPUT ");
 290 // if( (cap.capabilities & V4L2_CAP_RDS_CAPTURE)   ) printf("RDS_CAPTURE ");
 291 // if( (cap.capabilities & V4L2_CAP_TUNER)         ) printf("TUNER ");
 292 // if( (cap.capabilities & V4L2_CAP_AUDIO)         ) printf("AUDIO ");
 293 // if( (cap.capabilities & V4L2_CAP_RADIO)         ) printf("RADIO ");
 294 // if( (cap.capabilities & V4L2_CAP_READWRITE)     ) printf("READWRITE ");
 295 // if( (cap.capabilities & V4L2_CAP_ASYNCIO)       ) printf("ASYNCIO ");
 296 // if( (cap.capabilities & V4L2_CAP_STREAMING)     ) printf("STREAMING ");
 297 // printf("\n");
 298
 299         int config_width = video_device->in_config->w;
 300         int config_height = video_device->in_config->h;
 301         int config_area = config_width * config_height;
 302         int best_width = config_width;
 303         int best_height = config_height;
 304         unsigned int best_format = 0;
 305         int best_merit = 0;
 306         int best_color_model = -1;
 307         int best_area = 1;
 308         int driver = video_device->in_config->driver;
 309
 310         for( int i=0; i<20; ++i ) {
 311                 struct v4l2_fmtdesc fmt;
 312                 memset(&fmt,0,sizeof(fmt));
 313                 fmt.index = i;
 314                 fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 315                 if( vioctl(VIDIOC_ENUM_FMT,&fmt) != 0 ) break;
 316                 printf("DeviceV4L2Base::v4l2_open");
 317                 // printf("format=\"%s\";",&fmt.description[0]);
 318                 printf(" pixels=\"%4.4s\"; res=\"",(char*)&fmt.pixelformat);
 319
 320                 int merit = 0;
 321                 int cmodel = -1;
 322                 switch(fmt.pixelformat)
 323                 {
 324                 case V4L2_PIX_FMT_UYVY:    cmodel = BC_UVY422;  merit = 4;  break;
 325                 case V4L2_PIX_FMT_YUYV:    cmodel = BC_YUV422;  merit = 4;  break;
 326                 case V4L2_PIX_FMT_Y41P:    cmodel = BC_YUV411P; merit = 1;  break;
 327                 case V4L2_PIX_FMT_YVU420:  cmodel = BC_YUV420P; merit = 3;  break;
 328                 case V4L2_PIX_FMT_YUV422P: cmodel = BC_YUV422P; merit = 4;  break;
 329                 case V4L2_PIX_FMT_RGB24:   cmodel = BC_RGB888;  merit = 6;  break;
 330                 case V4L2_PIX_FMT_MJPEG:
 331                         cmodel = BC_COMPRESSED;
 332                         merit = driver == VIDEO4LINUX2JPEG ? 7 : 0;
 333                         break;
 334                 case V4L2_PIX_FMT_MPEG:
 335                         cmodel = BC_YUV420P;
 336                         merit = driver == VIDEO4LINUX2MPEG ? 7 : 2;
 337                         break;
 338                 }
 339                 if( cmodel >= 0 && merit > best_merit )
 340                 {
 341                         best_merit = merit;
 342                         best_format = fmt.pixelformat;
 343                         best_color_model = cmodel;
 344                 }
 345
 346                 for( int n=0; n<20; ++n ) {
 347                         struct v4l2_frmsizeenum fsz;
 348                         memset(&fsz,0,sizeof(fsz));
 349                         fsz.index = n;
 350                         fsz.pixel_format = fmt.pixelformat;
 351                         if( vioctl(VIDIOC_ENUM_FRAMESIZES,&fsz) != 0 ) break;
 352                         int w = fsz.discrete.width, h = fsz.discrete.height;
 353                         if( n > 0 ) printf(" ");
 354                         printf("%dx%d",w,h);
 355                         int area = w * h;
 356                         if( area > config_area ) continue;
 357                         int diff0 = area - best_area;
 358                         if( diff0 < 0 ) diff0 = -diff0;
 359                         int diff1 = area - config_area;
 360                         if( diff1 < 0 ) diff1 = -diff1;
 361                         if( diff1 < diff0 ) {
 362                                 best_area = area;
 363                                 best_width = w;
 364                                 best_height = h;
 365                         }
 366                 }
 367                 printf("\"\n");
 368         }
 369
 370         if( !best_format )
 371         {
 372                 printf("DeviceV4L2Base::v4l2_open cant determine best_format\n");
 373                 switch(driver)
 374                 {
 375                 case VIDEO4LINUX2JPEG:
 376                         best_format = V4L2_PIX_FMT_MJPEG;
 377                         break;
 378                 case VIDEO4LINUX2MPEG:
 379                         best_format = V4L2_PIX_FMT_MPEG;
 380                         break;
 381                 default:
 382                         best_color_model = color_model;
 383                         best_format = cmodel_to_device(color_model);
 384                         break;
 385                 }
 386                 printf(_("DeviceV4L2Base::v4l2_open "
 387                         " attempting format %4.4s\n"), (char *)&best_format);
 388         }
 389         if(driver == VIDEO4LINUX2JPEG && best_format != V4L2_PIX_FMT_MJPEG)
 390         {
 391                 printf(_("DeviceV4L2Base::v4l2_open jpeg driver"
 392                         " and best_format not mjpeg (%4.4s)\n"), (char *)&best_format);
 393                 return 1;
 394         }
 395         if(driver == VIDEO4LINUX2MPEG && best_format != V4L2_PIX_FMT_MPEG)
 396         {
 397                 printf(_("DeviceV4L2Base::v4l2_open mpeg driver"
 398                         " and best_format not mpeg (%4.4s)\n"),(char *)&best_format);
 399                 return 1;
 400         }
 401         if(config_width != best_width || config_height != best_height)
 402         {
 403                 printf(_("DeviceV4L2Base::v4l2_open  config geom %dx%d != %dx%d best_geom\n"),
 404                         config_width, config_height, best_width, best_height);
 405         }
 406
 407 // Set up frame rate
 408         struct v4l2_streamparm v4l2_parm;
 409         memset(&v4l2_parm, 0, sizeof(v4l2_parm));
 410         v4l2_parm.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 411         if(vioctl(VIDIOC_G_PARM, &v4l2_parm) < 0)
 412                 perror("DeviceV4L2Base::v4l2_open VIDIOC_G_PARM");
 413         if(v4l2_parm.parm.capture.capability & V4L2_CAP_TIMEPERFRAME)
 414         {
 415                 v4l2_parm.parm.capture.capturemode |= V4L2_CAP_TIMEPERFRAME;
 416                 v4l2_parm.parm.capture.timeperframe.numerator = 1;
 417                 v4l2_parm.parm.capture.timeperframe.denominator =
 418                         (unsigned long)((float)1 /
 419                         video_device->frame_rate * 10000000);
 420                 if(vioctl(VIDIOC_S_PARM, &v4l2_parm) < 0)
 421                         perror("DeviceV4L2Base::v4l2_open VIDIOC_S_PARM");
 422
 423                 if(vioctl(VIDIOC_G_PARM, &v4l2_parm) < 0)
 424                         perror("DeviceV4L2Base::v4l2_open VIDIOC_G_PARM");
 425         }
 426
 427 // Set up data format
 428         struct v4l2_format v4l2_params;
 429         memset(&v4l2_params, 0, sizeof(v4l2_params));
 430         v4l2_params.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 431         if(vioctl(VIDIOC_G_FMT, &v4l2_params) < 0)
 432                 perror("DeviceV4L2Base::v4l2_open VIDIOC_G_FMT 1");
 433         v4l2_params.fmt.pix.width = best_width;
 434         v4l2_params.fmt.pix.height = best_height;
 435         v4l2_params.fmt.pix.pixelformat = best_format;
 436         if(vioctl(VIDIOC_S_FMT, &v4l2_params) < 0)
 437                 perror("DeviceV4L2Base::v4l2_open VIDIOC_S_FMT");
 438         memset(&v4l2_params, 0, sizeof(v4l2_params));
 439         v4l2_params.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 440         if(vioctl(VIDIOC_G_FMT, &v4l2_params) < 0)
 441                 perror("DeviceV4L2Base::v4l2_open VIDIOC_G_FMT 2");
 442         if( v4l2_params.fmt.pix.pixelformat != best_format )
 443         {
 444                 printf("DeviceV4L2Base::v4l2_open  set format %4.4s != %4.4s best_format\n",
 445                          (char*)&v4l2_params.fmt.pix.pixelformat, (char*)&best_format);
 446                 return 1;
 447         }
 448         if( (int)v4l2_params.fmt.pix.width != best_width ||
 449             (int)v4l2_params.fmt.pix.height != best_height )
 450         {
 451                 printf("DeviceV4L2Base::v4l2_open  set geom %dx%d != %dx%d best_geom\n",
 452                         v4l2_params.fmt.pix.width, v4l2_params.fmt.pix.height,
 453                         best_width, best_height);
 454                 return 1;
 455         }
 456
 457 // Set picture controls.  This driver requires the values to be set once to default
 458 // values and then again to different values before it takes up the values.
 459 // Unfortunately VIDIOC_S_CTRL resets the audio to mono in 2.6.7.
 460         PictureConfig *picture = video_device->picture;
 461         for(int i = 0; i < picture->controls.total; i++)
 462         {
 463                 struct v4l2_queryctrl arg;
 464                 memset(&arg, 0, sizeof(arg));
 465                 PictureItem *item = picture->controls.values[i];
 466                 arg.id = item->device_id;
 467                 if(!vioctl(VIDIOC_QUERYCTRL, &arg))
 468                 {
 469                         struct v4l2_control ctrl_arg;
 470                         memset(&ctrl_arg, 0, sizeof(ctrl_arg));
 471                         ctrl_arg.id = item->device_id;
 472                         ctrl_arg.value = 0;
 473                         if(vioctl(VIDIOC_S_CTRL, &ctrl_arg) < 0)
 474                                 perror("DeviceV4L2Base::v4l2_open VIDIOC_S_CTRL");
 475                 }
 476                 else
 477                 {
 478                         printf("DeviceV4L2Base::v4l2_open VIDIOC_S_CTRL 1 %s/id %08x failed\n",
 479                                 item->name, item->device_id);
 480                 }
 481         }
 482
 483
 484         for(int i = 0; i < picture->controls.total; i++)
 485         {
 486                 struct v4l2_queryctrl arg;
 487                 memset(&arg, 0, sizeof(arg));
 488                 PictureItem *item = picture->controls.values[i];
 489                 arg.id = item->device_id;
 490
 491                 if(!vioctl(VIDIOC_QUERYCTRL, &arg))
 492                 {
 493                         struct v4l2_control ctrl_arg;
 494                         memset(&ctrl_arg, 0, sizeof(ctrl_arg));
 495                         ctrl_arg.id = item->device_id;
 496                         ctrl_arg.value = item->value;
 497                         if(vioctl(VIDIOC_S_CTRL, &ctrl_arg) < 0)
 498                                 perror("DeviceV4L2Base::v4l2_open VIDIOC_S_CTRL");
 499                 }
 500                 else
 501                 {
 502                         printf("DeviceV4L2Base::v4l2_open VIDIOC_S_CTRL 2 %s/id %08x failed\n",
 503                                 item->name, item->device_id);
 504                 }
 505         }
 506
 507
 508 // Set input
 509         Channel *video_channel = video_device->channel;
 510         ArrayList<Channel*> *inputs = video_device->get_inputs();
 511         int input = video_channel->input;
 512         device_channel = input >= 0 && input < inputs->total ?
 513                 inputs->values[input] : 0;
 514         if(!device_channel)
 515         {
 516 // Try first input
 517                 if(inputs->total)
 518                 {
 519                         device_channel = inputs->values[0];
 520                         printf("DeviceV4L2Base::v4l2_open user channel not found.  Using %s\n",
 521                                 device_channel->device_name);
 522                 }
 523                 else
 524                 {
 525                         printf("DeviceV4L2Base::v4l2_open channel \"%s\" not found.\n",
 526                                 video_channel->title);
 527                 }
 528         }
 529
 530 // Translate input to API structures
 531         input = device_channel ? device_channel->device_index : 0;
 532         if(vioctl(VIDIOC_S_INPUT, &input) < 0)
 533                 perror("DeviceV4L2Base::v4l2_open VIDIOC_S_INPUT");
 534
 535 // Set norm
 536         v4l2_std_id std_id = 0;
 537         switch(video_channel->norm)
 538         {
 539                 case NTSC: std_id = V4L2_STD_NTSC; break;
 540                 case PAL: std_id = V4L2_STD_PAL; break;
 541                 case SECAM: std_id = V4L2_STD_SECAM; break;
 542                 default: std_id = V4L2_STD_NTSC_M; break;
 543         }
 544         if(vioctl(VIDIOC_S_STD, &std_id))
 545                 perror("DeviceV4L2Base::v4l2_open VIDIOC_S_STD");
 546
 547         int dev_tuner = device_channel ? device_channel->tuner : -1;
 548         if( (cap.capabilities & V4L2_CAP_TUNER) && dev_tuner >= 0 )
 549         {
 550                 struct v4l2_tuner tuner;
 551                 memset(&tuner, 0, sizeof(tuner));
 552                 tuner.index = dev_tuner;
 553                 if(!vioctl(VIDIOC_G_TUNER, &tuner))
 554                 {
 555 // printf("DeviceV4L2Base::v4l2_open audmode=%d rxsubchans=%d\n",
 556 //   tuner.audmode, tuner.rxsubchans);
 557                         tuner.index = dev_tuner;
 558                         tuner.type = V4L2_TUNER_ANALOG_TV;
 559                         tuner.audmode = V4L2_TUNER_MODE_STEREO;
 560                         tuner.rxsubchans = V4L2_TUNER_SUB_STEREO;
 561                         if(vioctl(VIDIOC_S_TUNER, &tuner) < 0)
 562                                 perror("DeviceV4L2Base::v4l2_open VIDIOC_S_TUNER");
 563 // Set frequency
 564                         struct v4l2_frequency frequency;
 565                         memset(&frequency, 0, sizeof(frequency));
 566                         frequency.tuner = video_channel->tuner;
 567                         frequency.type = V4L2_TUNER_ANALOG_TV;
 568                         int table = video_channel->freqtable;
 569                         int entry = video_channel->entry;
 570                         frequency.frequency = (int)(chanlists[table].list[entry].freq * 0.016);
 571 // printf("DeviceV4L2Base::v4l2_open tuner=%d freq=%d norm=%d\n",
 572 //   video_channel->tuner, frequency.frequency, video_channel->norm);
 573                         if(vioctl(VIDIOC_S_FREQUENCY, &frequency) < 0)
 574                                 perror("DeviceV4L2Base::v4l2_open VIDIOC_S_FREQUENCY");
 575                 }
 576                 else
 577                         perror("DeviceV4L2Base::v4l2_open VIDIOC_G_TUNER");
 578         }
 579
 580 // Set compression
 581         if(color_model == BC_COMPRESSED)
 582         {
 583                 struct v4l2_jpegcompression jpeg_arg;
 584                 memset(&jpeg_arg, 0, sizeof(jpeg_arg));
 585                 if(vioctl(VIDIOC_G_JPEGCOMP, &jpeg_arg) < 0)
 586                         perror("DeviceV4L2Base::v4l2_open VIDIOC_G_JPEGCOMP");
 587                 jpeg_arg.quality = video_device->quality / 2;
 588                 if(vioctl(VIDIOC_S_JPEGCOMP, &jpeg_arg) < 0)
 589                         perror("DeviceV4L2Base::v4l2_open VIDIOC_S_JPEGCOMP");
 590         }
 591
 592         this->color_model = best_color_model;
 593         return 0;
 594 }
 595
 596 int DeviceV4L2Base::v4l2_status()
 597 {
 598         int result = 1;
 599         Channel *channel = device_channel;
 600         if( !channel )
 601         {
 602                 dev_status = 0;
 603         }
 604         else if( channel->tuner >= 0 )
 605         {
 606                 struct v4l2_tuner tuner;
 607                 memset(&tuner,0,sizeof(tuner));
 608                 tuner.index = channel->tuner;
 609                 if( !vioctl(VIDIOC_G_TUNER, &tuner) )
 610                 {
 611                         dev_status = tuner.signal ? 1 : 0;
 612                         result = 0;
 613                 }
 614                 else
 615                         perror("DeviceV4L2Base::v4l2_status VIDIOC_S_TUNER");
 616         }
 617         else
 618         {
 619                 struct v4l2_input arg;
 620                 memset(&arg, 0, sizeof(arg));
 621                 arg.index = channel->device_index;
 622                 if( !vioctl(VIDIOC_ENUMINPUT, &arg) )
 623                 {
 624                         dev_status = (arg.status &
 625                         (V4L2_IN_ST_NO_POWER | V4L2_IN_ST_NO_SIGNAL)) ? 0 : 1;
 626                         result = 0;
 627                 }
 628                 else
 629                         perror("DeviceV4L2Base::v4l2_status VIDIOC_ENUMINPUT");
 630         }
 631         return result;
 632 }
 633
 634 void DeviceV4L2Base::dev_close()
 635 {
 636         if( dev_fd >= 0 )
 637         {
 638                 ::close(dev_fd);
 639                 dev_fd = -1;
 640         }
 641 }
 642
 643 int DeviceV4L2Base::dev_open()
 644 {
 645         if( dev_fd < 0 )
 646         {
 647                 VideoDevice *video_device = v4l2_device();
 648                 if( !video_device )
 649                 {
 650                         printf("DeviceV4L2Base::dev_open: video_device not available\n");
 651                         Timer::delay(250);
 652                         return -1;
 653                 }
 654                 const char *dev_path = video_device->in_config->get_path();
 655                 dev_fd = open(dev_path, O_RDWR);
 656                 if( dev_fd < 0 )
 657                 {
 658                         perror("DeviceV4L2Base::dev_open: open_failed");
 659                         printf("DeviceV4L2Base::dev_open: dev_path %s\n", dev_path);
 660                         return 1;
 661                 }
 662                 video_device->set_cloexec_flag(dev_fd, 1);
 663         }
 664         return 0;
 665 }
 666
 667
 668 int DeviceV4L2Base::open_dev(int color_model)
 669 {
 670         v4l2_lock->lock("DeviceV4L2Base::open_dev");
 671         int result = 0;
 672         if( !opened )
 673         {
 674                 result = dev_open();
 675                 if( !result )
 676                         result = v4l2_open(color_model);
 677                 if( !result )
 678                         result = start_dev();
 679                 if( !result )
 680                 {
 681                         qbfrs_lock->reset();
 682                         video_lock->reset();
 683                         getq = new DeviceV4L2BufferQ(total_buffers+1);
 684                         put_thread = new DeviceV4L2Put(this);
 685                         put_thread->start();
 686                         done = 0;
 687                         Thread::start();
 688                 }
 689                 else
 690                         printf("DeviceV4L2Base::open_dev failed\n");
 691         }
 692         if( result )
 693         {
 694                 printf("DeviceV4L2Base::open_dev: adaptor open failed\n");
 695                 stop_dev();
 696                 dev_close();
 697         }
 698         else
 699                 opened = 1;
 700         v4l2_lock->unlock();
 701         return result;
 702 }
 703
 704 void DeviceV4L2Base::close_dev()
 705 {
 706         v4l2_lock->lock("DeviceV4L2Base::close_dev");
 707         if( opened )
 708         {
 709                 if(Thread::running())
 710                 {
 711                         done = 1;
 712                         Thread::cancel();
 713                         Thread::join();
 714                 }
 715                 if(put_thread)
 716                 {
 717                         delete put_thread;
 718                         put_thread = 0;
 719                 }
 720                 stop_dev();
 721                 dev_close();
 722                 delete getq;
 723                 getq = 0;
 724                 opened = 0;
 725         }
 726         v4l2_lock->unlock();
 727 }
 728
 729 int DeviceV4L2Base::status_dev()
 730 {
 731         v4l2_lock->lock("DeviceV4L2Base::status_dev");
 732         int result = dev_fd >= 0 ? v4l2_status() : 1;
 733         v4l2_lock->unlock();
 734         return result;
 735 }
 736
 737 unsigned int DeviceV4L2Base::cmodel_to_device(int color_model)
 738 {
 739         switch(color_model)
 740         {
 741         case BC_COMPRESSED:     return V4L2_PIX_FMT_MJPEG;
 742         case BC_YUV422:         return V4L2_PIX_FMT_YUYV;
 743         case BC_UVY422:         return V4L2_PIX_FMT_UYVY;
 744         case BC_YUV411P:        return V4L2_PIX_FMT_Y41P;
 745         case BC_YUV420P:        return V4L2_PIX_FMT_YVU420;
 746         case BC_YUV422P:        return V4L2_PIX_FMT_YUV422P;
 747         case BC_RGB888:         return V4L2_PIX_FMT_RGB24;
 748         }
 749         return 0;
 750 }
 751
 752 DeviceV4L2VFrame::DeviceV4L2VFrame(int dev_fd, unsigned long ofs, unsigned long sz)
 753 {
 754         dev_data = (unsigned char*)mmap(NULL, dev_size=sz,
 755                 PROT_READ | PROT_WRITE, MAP_SHARED, dev_fd, ofs);
 756         if(dev_data == MAP_FAILED) {
 757                 perror("DeviceV4L2VFrame::DeviceV4L2VFrame: mmap");
 758                 dev_data = 0;
 759         }
 760 }
 761
 762
 763 DeviceV4L2VFrame::~DeviceV4L2VFrame()
 764 {
 765         munmap(dev_data, dev_size);
 766 }
 767
 768 int DeviceV4L2Base::start_dev()
 769 {
 770         VideoDevice *video_device = v4l2_device();
 771         if( !video_device ) return 1;
 772
 773 // Errors here are fatal.
 774         int req_buffers = video_device->in_config->capture_length;
 775         req_buffers = MAX(req_buffers, 2);
 776         req_buffers = MIN(req_buffers, 0xff);
 777
 778         struct v4l2_requestbuffers requestbuffers;
 779         memset(&requestbuffers, 0, sizeof(requestbuffers));
 780 //printf("DeviceV4L2Base::start_dev requested %d buffers\n", req_buffers);
 781         requestbuffers.count = req_buffers;
 782         requestbuffers.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 783         requestbuffers.memory = V4L2_MEMORY_MMAP;
 784         if(vioctl(VIDIOC_REQBUFS, &requestbuffers) < 0)
 785         {
 786                 perror("DeviceV4L2Base::start_dev VIDIOC_REQBUFS");
 787                 return 1;
 788         }
 789         int bfr_count = requestbuffers.count;
 790 //printf("DeviceV4L2Base::start_dev got %d buffers\n", bfr_count);
 791         device_buffers = new DeviceV4L2VFrame *[bfr_count];
 792         memset(device_buffers, 0, bfr_count*sizeof(device_buffers[0]));
 793
 794 //printf("DeviceV4L2Base::start_dev color_model=%d\n", color_model);
 795         int iwidth = video_device->in_config->w;
 796         int iheight = video_device->in_config->h;
 797         int y_offset = 0, line_size = -1;
 798         int u_offset = 0, v_offset = 0;
 799
 800         if(color_model != BC_COMPRESSED)
 801         {
 802                 switch(color_model)
 803                 {
 804                 case BC_YUV422P:
 805                         u_offset = iwidth * iheight;
 806                         v_offset = u_offset + u_offset / 2;
 807                         break;
 808                 case BC_YUV420P:
 809                 case BC_YUV411P:
 810 // In 2.6.7, the v and u are inverted for 420 but not 422
 811                         v_offset = iwidth * iheight;
 812                         u_offset = v_offset + v_offset / 4;
 813                         break;
 814                 }
 815         }
 816
 817         total_buffers = 0;
 818         for(int i = 0; i < bfr_count; i++)
 819         {
 820                 struct v4l2_buffer buffer;
 821                 memset(&buffer, 0, sizeof(buffer));
 822                 buffer.type = requestbuffers.type;
 823                 buffer.index = i;
 824                 if(vioctl(VIDIOC_QUERYBUF, &buffer) < 0)
 825                 {
 826                         perror("DeviceV4L2Base::start_dev VIDIOC_QUERYBUF");
 827                         continue;
 828                 }
 829
 830                 DeviceV4L2VFrame *dframe =
 831                         new DeviceV4L2VFrame(dev_fd, buffer.m.offset, buffer.length);
 832                 unsigned char *data = dframe->get_dev_data();
 833                 if( !data ) continue;
 834                 device_buffers[total_buffers++] = dframe;
 835                 if(color_model != BC_COMPRESSED)
 836                         dframe->reallocate(data, 0, y_offset, u_offset, v_offset,
 837                                 iwidth, iheight, color_model, line_size);
 838                 else
 839                         dframe->set_compressed_memory(data, 0, 0, dframe->get_dev_size());
 840         }
 841
 842         q_bfrs = 0;
 843         for(int i = 0; i < total_buffers; i++)
 844         {
 845                 struct v4l2_buffer buffer;
 846                 memset(&buffer, 0, sizeof(buffer));
 847                 buffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 848                 buffer.memory = V4L2_MEMORY_MMAP;
 849                 buffer.index = i;
 850
 851                 if(vioctl(VIDIOC_QBUF, &buffer) < 0)
 852                 {
 853                         perror("DeviceV4L2Base::start_dev VIDIOC_QBUF");
 854                         continue;
 855                 }
 856                 ++q_bfrs;
 857         }
 858
 859         int streamon_arg = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 860         if(vioctl(VIDIOC_STREAMON, &streamon_arg) < 0)
 861         {
 862                 perror("DeviceV4L2Base::start_dev VIDIOC_STREAMON");
 863                 return 1;
 864         }
 865
 866         streamon = 1;
 867         return 0;
 868 }
 869
 870 int DeviceV4L2Base::stop_dev()
 871 {
 872         if( streamon )
 873         {
 874                 int streamoff_arg = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 875                 if(vioctl(VIDIOC_STREAMOFF, &streamoff_arg) < 0)
 876                         perror("DeviceV4L2Base::stop_stream_capture VIDIOC_STREAMOFF");
 877                 streamon = 0;
 878         }
 879
 880         for( int i = 0; i < total_buffers; i++ )
 881         {
 882                 delete device_buffers[i];
 883         }
 884
 885         struct v4l2_requestbuffers requestbuffers;
 886         memset(&requestbuffers, 0, sizeof(requestbuffers));
 887         requestbuffers.count = 0;
 888         requestbuffers.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 889         requestbuffers.memory = V4L2_MEMORY_MMAP;
 890         vioctl(VIDIOC_REQBUFS, &requestbuffers);
 891
 892         delete [] device_buffers;
 893         device_buffers = 0;
 894         total_buffers = 0;
 895         return 0;
 896 }
 897
 898
 899 void DeviceV4L2Base::run()
 900 {
 901         Thread::disable_cancel();
 902         int min_buffers = total_buffers / 2;
 903         if( min_buffers > 3 ) min_buffers = 3;
 904
 905 // Read buffers continuously
 906         while( !done )
 907         {
 908                 int retry = 0;
 909                 int qbfrs = q_bfrs;
 910                 while( !done && (!qbfrs || (!retry && qbfrs < min_buffers)) )
 911                 {
 912                         Thread::enable_cancel();
 913                         Timer::delay(10);
 914                         Thread::disable_cancel();
 915                         ++retry;  qbfrs = q_bfrs;
 916                 }
 917                 if( done ) break;
 918                 struct v4l2_buffer buffer;
 919                 memset(&buffer, 0, sizeof(buffer));
 920                 buffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 921                 buffer.memory = V4L2_MEMORY_MMAP;
 922
 923 // The driver returns the first buffer not queued, so only one buffer
 924 // can be unqueued at a time.
 925                 Thread::enable_cancel();
 926                 qbfrs_lock->lock("DeviceV4L2Base::run");
 927                 int result = vioctl(VIDIOC_DQBUF, &buffer);
 928                 if( !result ) --q_bfrs;
 929                 qbfrs_lock->unlock();
 930                 Thread::disable_cancel();
 931                 if(result < 0)
 932                 {
 933                         perror("DeviceV4L2Base::run VIDIOC_DQBUF");
 934                         Thread::enable_cancel();
 935                         Timer::delay(10);
 936                         Thread::disable_cancel();
 937                         continue;
 938                 }
 939
 940 // Get output frame
 941                 int bfr = buffer.index;
 942 // Set output frame data size/time, queue video
 943                 VFrame *frame = device_buffers[bfr];
 944                 if(color_model == BC_COMPRESSED)
 945                         frame->set_compressed_size(buffer.bytesused);
 946                 struct timeval *tv = &buffer.timestamp;
 947                 double bfr_time = tv->tv_sec + tv->tv_usec / 1000000.;
 948                 frame->set_timestamp(bfr_time);
 949                 if( !getq->q(bfr) ) video_lock->unlock();
 950         }
 951 }
 952