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