hvirtual/cinelerra/vdevicebuz.C

   1 // ALPHA C++ can't compile 64 bit headers
   2 #undef _LARGEFILE_SOURCE
   3 #undef _LARGEFILE64_SOURCE
   4 #undef _FILE_OFFSET_BITS
   5
   6 #include "assets.h"
   7 #include "bcsignals.h"
   8 #include "channel.h"
   9 #include "chantables.h"
  10 #include "condition.h"
  11 #include "file.inc"
  12 #include "mutex.h"
  13 #include "picture.h"
  14 #include "playbackconfig.h"
  15 #include "preferences.h"
  16 #include "recordconfig.h"
  17 #include "strategies.inc"
  18 #include "vdevicebuz.h"
  19 #include "vframe.h"
  20 #include "videoconfig.h"
  21 #include "videodevice.h"
  22
  23 #include <errno.h>
  24 #include <stdint.h>
  25 #include <linux/kernel.h>
  26 //#include <linux/videodev2.h>
  27 #include <linux/videodev.h>
  28 #include <fcntl.h>
  29 #include <sys/ioctl.h>
  30 #include <sys/mman.h>
  31 #include <unistd.h>
  32
  33
  34
  35 #define READ_TIMEOUT 5000000
  36
  37
  38 VDeviceBUZInput::VDeviceBUZInput(VDeviceBUZ *device)
  39  : Thread(1, 1, 0)
  40 {
  41         this->device = device;
  42         buffer = 0;
  43         buffer_size = 0;
  44         total_buffers = 0;
  45         current_inbuffer = 0;
  46         current_outbuffer = 0;
  47         done = 0;
  48         output_lock = new Condition(0, "VDeviceBUZInput::output_lock");
  49         buffer_lock = new Mutex("VDeviceBUZInput::buffer_lock");
  50 }
  51
  52 VDeviceBUZInput::~VDeviceBUZInput()
  53 {
  54         if(Thread::running())
  55         {
  56                 done = 1;
  57                 Thread::cancel();
  58                 Thread::join();
  59         }
  60
  61         if(buffer)
  62         {
  63                 for(int i = 0; i < total_buffers; i++)
  64                 {
  65                         delete [] buffer[i];
  66                 }
  67                 delete [] buffer;
  68                 delete [] buffer_size;
  69         }
  70         delete output_lock;
  71         delete buffer_lock;
  72 }
  73
  74 void VDeviceBUZInput::start()
  75 {
  76 // Create buffers
  77         total_buffers = device->device->in_config->capture_length;
  78         buffer = new char*[total_buffers];
  79         buffer_size = new int[total_buffers];
  80         bzero(buffer_size, sizeof(int) * total_buffers);
  81         for(int i = 0; i < total_buffers; i++)
  82         {
  83                 buffer[i] = new char[INPUT_BUFFER_SIZE];
  84         }
  85
  86         Thread::start();
  87 }
  88
  89 void VDeviceBUZInput::run()
  90 {
  91     struct buz_sync bsync;
  92
  93 // Wait for frame
  94         while(1)
  95         {
  96                 Thread::enable_cancel();
  97                 if(ioctl(device->jvideo_fd, BUZIOC_SYNC, &bsync) < 0)
  98                 {
  99                         perror("VDeviceBUZInput::run BUZIOC_SYNC");
 100                         if(done) return;
 101                         Thread::disable_cancel();
 102                 }
 103                 else
 104                 {
 105                         Thread::disable_cancel();
 106
 107
 108
 109                         int new_buffer = 0;
 110                         buffer_lock->lock("VDeviceBUZInput::run");
 111 // Save only if the current buffer is free.
 112                         if(!buffer_size[current_inbuffer])
 113                         {
 114                                 new_buffer = 1;
 115 // Copy to input buffer
 116                                 memcpy(buffer[current_inbuffer],
 117                                         device->input_buffer + bsync.frame * device->breq.size,
 118                                         bsync.length);
 119
 120 // Advance input buffer number and decrease semaphore.
 121                                 buffer_size[current_inbuffer] = bsync.length;
 122                                 increment_counter(&current_inbuffer);
 123                         }
 124
 125                         buffer_lock->unlock();
 126
 127                         if(ioctl(device->jvideo_fd, BUZIOC_QBUF_CAPT, &bsync.frame))
 128                                 perror("VDeviceBUZInput::run BUZIOC_QBUF_CAPT");
 129
 130                         if(new_buffer) output_lock->unlock();
 131                 }
 132         }
 133 }
 134
 135 void VDeviceBUZInput::get_buffer(char **ptr, int *size)
 136 {
 137 // Increase semaphore to wait for buffer.
 138         int result = output_lock->timed_lock(READ_TIMEOUT, "VDeviceBUZInput::get_buffer");
 139
 140
 141 // The driver has its own timeout routine but it doesn't work because
 142 // because the tuner lock is unlocked and relocked with no delay.
 143 //      int result = 0;
 144 //      output_lock->lock("VDeviceBUZInput::get_buffer");
 145
 146         if(!result)
 147         {
 148 // Take over buffer table
 149                 buffer_lock->lock("VDeviceBUZInput::get_buffer");
 150                 *ptr = buffer[current_outbuffer];
 151                 *size = buffer_size[current_outbuffer];
 152                 buffer_lock->unlock();
 153         }
 154         else
 155         {
 156 //printf("VDeviceBUZInput::get_buffer 1\n");
 157                 output_lock->unlock();
 158         }
 159 }
 160
 161 void VDeviceBUZInput::put_buffer()
 162 {
 163         buffer_lock->lock("VDeviceBUZInput::put_buffer");
 164         buffer_size[current_outbuffer] = 0;
 165         buffer_lock->unlock();
 166         increment_counter(&current_outbuffer);
 167 }
 168
 169 void VDeviceBUZInput::increment_counter(int *counter)
 170 {
 171         (*counter)++;
 172         if(*counter >= total_buffers) *counter = 0;
 173 }
 174
 175 void VDeviceBUZInput::decrement_counter(int *counter)
 176 {
 177         (*counter)--;
 178         if(*counter < 0) *counter = total_buffers - 1;
 179 }
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195 VDeviceBUZ::VDeviceBUZ(VideoDevice *device)
 196  : VDeviceBase(device)
 197 {
 198         reset_parameters();
 199         render_strategies.append(VRENDER_MJPG);
 200         tuner_lock = new Mutex("VDeviceBUZ::tuner_lock");
 201 }
 202
 203 VDeviceBUZ::~VDeviceBUZ()
 204 {
 205         close_all();
 206         delete tuner_lock;
 207 }
 208
 209 int VDeviceBUZ::reset_parameters()
 210 {
 211         jvideo_fd = 0;
 212         input_buffer = 0;
 213         output_buffer = 0;
 214         frame_buffer = 0;
 215         frame_size = 0;
 216         frame_allocated = 0;
 217         input_error = 0;
 218         last_frame_no = 0;
 219         temp_frame = 0;
 220         user_frame = 0;
 221         mjpeg = 0;
 222         total_loops = 0;
 223         output_number = 0;
 224         input_thread = 0;
 225         brightness = 32768;
 226         hue = 32768;
 227         color = 32768;
 228         contrast = 32768;
 229         whiteness = 32768;
 230 }
 231
 232 int VDeviceBUZ::close_input_core()
 233 {
 234         if(input_thread)
 235         {
 236                 delete input_thread;
 237                 input_thread = 0;
 238         }
 239
 240
 241         if(device->r)
 242         {
 243                 if(jvideo_fd) close(jvideo_fd);
 244                 jvideo_fd = 0;
 245         }
 246
 247         if(input_buffer)
 248         {
 249                 if(input_buffer > 0)
 250                         munmap(input_buffer, breq.count * breq.size);
 251                 input_buffer = 0;
 252         }
 253 }
 254
 255 int VDeviceBUZ::close_output_core()
 256 {
 257 //printf("VDeviceBUZ::close_output_core 1\n");
 258         if(device->w)
 259         {
 260                 int n = -1;
 261 //              if(ioctl(jvideo_fd, BUZIOC_QBUF_PLAY, &n) < 0)
 262 //                      perror("VDeviceBUZ::close_output_core BUZIOC_QBUF_PLAY");
 263                 if(jvideo_fd) close(jvideo_fd);
 264                 jvideo_fd = 0;
 265         }
 266         if(output_buffer)
 267         {
 268                 if(output_buffer > 0)
 269                         munmap(output_buffer, breq.count * breq.size);
 270                 output_buffer = 0;
 271         }
 272         if(temp_frame)
 273         {
 274                 delete temp_frame;
 275                 temp_frame = 0;
 276         }
 277         if(mjpeg)
 278         {
 279                 mjpeg_delete(mjpeg);
 280                 mjpeg = 0;
 281         }
 282         if(user_frame)
 283         {
 284                 delete user_frame;
 285                 user_frame = 0;
 286         }
 287 //printf("VDeviceBUZ::close_output_core 2\n");
 288         return 0;
 289 }
 290
 291
 292 int VDeviceBUZ::close_all()
 293 {
 294 //printf("VDeviceBUZ::close_all 1\n");
 295         close_input_core();
 296 //printf("VDeviceBUZ::close_all 1\n");
 297         close_output_core();
 298 //printf("VDeviceBUZ::close_all 1\n");
 299         if(frame_buffer) delete frame_buffer;
 300 //printf("VDeviceBUZ::close_all 1\n");
 301         reset_parameters();
 302 //printf("VDeviceBUZ::close_all 2\n");
 303         return 0;
 304 }
 305
 306 #define COMPOSITE_TEXT "Composite"
 307 #define SVIDEO_TEXT "S-Video"
 308 #define BUZ_COMPOSITE 0
 309 #define BUZ_SVIDEO 1
 310
 311 void VDeviceBUZ::get_inputs(ArrayList<Channel*> *input_sources)
 312 {
 313         Channel *new_source = new Channel;
 314
 315         new_source = new Channel;
 316         strcpy(new_source->device_name, COMPOSITE_TEXT);
 317         input_sources->append(new_source);
 318
 319         new_source = new Channel;
 320         strcpy(new_source->device_name, SVIDEO_TEXT);
 321         input_sources->append(new_source);
 322 }
 323
 324 int VDeviceBUZ::open_input()
 325 {
 326         device->channel->use_norm = 1;
 327         device->channel->use_input = 1;
 328
 329         device->picture->use_brightness = 1;
 330         device->picture->use_contrast = 1;
 331         device->picture->use_color = 1;
 332         device->picture->use_hue = 1;
 333         device->picture->use_whiteness = 1;
 334
 335 // Can't open input until after the channel is set
 336         return 0;
 337 }
 338
 339 int VDeviceBUZ::open_output()
 340 {
 341 // Can't open output until after the channel is set
 342         return 0;
 343 }
 344
 345 int VDeviceBUZ::set_channel(Channel *channel)
 346 {
 347         if(!channel) return 0;
 348
 349         tuner_lock->lock("VDeviceBUZ::set_channel");
 350
 351         if(device->r)
 352         {
 353                 close_input_core();
 354                 open_input_core(channel);
 355         }
 356         else
 357         {
 358                 close_output_core();
 359                 open_output_core(channel);
 360         }
 361
 362         tuner_lock->unlock();
 363
 364
 365         return 0;
 366 }
 367
 368 void VDeviceBUZ::create_channeldb(ArrayList<Channel*> *channeldb)
 369 {
 370         ;
 371 }
 372
 373 int VDeviceBUZ::set_picture(Picture *picture)
 374 {
 375         this->brightness = (int)((float)picture->brightness / 100 * 32767 + 32768);
 376         this->hue = (int)((float)picture->hue / 100 * 32767 + 32768);
 377         this->color = (int)((float)picture->color / 100 * 32767 + 32768);
 378         this->contrast = (int)((float)picture->contrast / 100 * 32767 + 32768);
 379         this->whiteness = (int)((float)picture->whiteness / 100 * 32767 + 32768);
 380
 381
 382         tuner_lock->lock("VDeviceBUZ::set_picture");
 383         if(device->r)
 384         {
 385                 close_input_core();
 386                 open_input_core(0);
 387         }
 388         else
 389         {
 390                 close_output_core();
 391                 open_output_core(0);
 392         }
 393         tuner_lock->unlock();
 394 //
 395 //
 396 // TRACE("VDeviceBUZ::set_picture 1");
 397 //      tuner_lock->lock("VDeviceBUZ::set_picture");
 398 // TRACE("VDeviceBUZ::set_picture 2");
 399 //
 400 //
 401 //
 402 //      struct video_picture picture_params;
 403 // // This call takes a long time in 2.4.22
 404 //      if(ioctl(jvideo_fd, VIDIOCGPICT, &picture_params) < 0)
 405 //              perror("VDeviceBUZ::set_picture VIDIOCGPICT");
 406 //      picture_params.brightness = brightness;
 407 //      picture_params.hue = hue;
 408 //      picture_params.colour = color;
 409 //      picture_params.contrast = contrast;
 410 //      picture_params.whiteness = whiteness;
 411 // // This call takes a long time in 2.4.22
 412 //      if(ioctl(jvideo_fd, VIDIOCSPICT, &picture_params) < 0)
 413 //              perror("VDeviceBUZ::set_picture VIDIOCSPICT");
 414 //      if(ioctl(jvideo_fd, VIDIOCGPICT, &picture_params) < 0)
 415 //              perror("VDeviceBUZ::set_picture VIDIOCGPICT");
 416 //
 417 //
 418 // TRACE("VDeviceBUZ::set_picture 10");
 419 //
 420 //
 421 //      tuner_lock->unlock();
 422
 423         return 0;
 424 }
 425
 426 int VDeviceBUZ::get_norm(int norm)
 427 {
 428         switch(norm)
 429         {
 430                 case NTSC:          return VIDEO_MODE_NTSC;      break;
 431                 case PAL:           return VIDEO_MODE_PAL;       break;
 432                 case SECAM:         return VIDEO_MODE_SECAM;     break;
 433         }
 434 }
 435
 436 int VDeviceBUZ::read_buffer(VFrame *frame)
 437 {
 438         tuner_lock->lock("VDeviceBUZ::read_buffer");
 439         if(!jvideo_fd) open_input_core(0);
 440
 441 // Get buffer from thread
 442         char *buffer = 0;
 443         int buffer_size = 0;
 444         if (input_thread)
 445                 input_thread->get_buffer(&buffer, &buffer_size);
 446
 447         if(buffer)
 448         {
 449                 frame->allocate_compressed_data(buffer_size);
 450                 frame->set_compressed_size(buffer_size);
 451
 452 // Transfer fields to frame
 453                 if(device->odd_field_first)
 454                 {
 455                         long field2_offset = mjpeg_get_field2((unsigned char*)buffer, buffer_size);
 456                         long field1_len = field2_offset;
 457                         long field2_len = buffer_size - field2_offset;
 458
 459                         memcpy(frame->get_data(), buffer + field2_offset, field2_len);
 460                         memcpy(frame->get_data() + field2_len, buffer, field1_len);
 461                 }
 462                 else
 463                 {
 464                         bcopy(buffer, frame->get_data(), buffer_size);
 465                 }
 466
 467                 input_thread->put_buffer();
 468                 tuner_lock->unlock();
 469         }
 470         else
 471         {
 472                 tuner_lock->unlock();
 473                 Timer timer;
 474 // Allow other threads to lock the tuner_lock under NPTL.
 475                 timer.delay(100);
 476         }
 477
 478
 479         return 0;
 480 }
 481
 482 int VDeviceBUZ::open_input_core(Channel *channel)
 483 {
 484         jvideo_fd = open(device->in_config->buz_in_device, O_RDONLY);
 485
 486         if(jvideo_fd <= 0)
 487         {
 488                 fprintf(stderr, "VDeviceBUZ::open_input %s: %s\n",
 489                         device->in_config->buz_in_device,
 490                         strerror(errno));
 491                 jvideo_fd = 0;
 492                 return 1;
 493         }
 494
 495 // Create input sources
 496         get_inputs(&device->input_sources);
 497
 498 // Set current input source
 499         if(channel)
 500         {
 501                 for(int i = 0; i < 2; i++)
 502                 {
 503                         struct video_channel vch;
 504                         vch.channel = channel->input;
 505                         vch.norm = get_norm(channel->norm);
 506
 507 //printf("VDeviceBUZ::open_input_core 2 %d %d\n", vch.channel, vch.norm);
 508                         if(ioctl(jvideo_fd, VIDIOCSCHAN, &vch) < 0)
 509                                 perror("VDeviceBUZ::open_input_core VIDIOCSCHAN ");
 510                 }
 511         }
 512
 513
 514 // Throw away
 515 //     struct video_capability vc;
 516 //      if(ioctl(jvideo_fd, VIDIOCGCAP, &vc) < 0)
 517 //              perror("VDeviceBUZ::open_input VIDIOCGCAP");
 518
 519 // API dependant initialization
 520         if(ioctl(jvideo_fd, BUZIOC_G_PARAMS, &bparm) < 0)
 521                 perror("VDeviceBUZ::open_input BUZIOC_G_PARAMS");
 522
 523         bparm.HorDcm = 1;
 524         bparm.VerDcm = 1;
 525         bparm.TmpDcm = 1;
 526         bparm.field_per_buff = 2;
 527         bparm.img_width = device->in_config->w;
 528         bparm.img_height = device->in_config->h / bparm.field_per_buff;
 529         bparm.img_x = 0;
 530         bparm.img_y = 0;
 531 //      bparm.APPn = 0;
 532 //      bparm.APP_len = 14;
 533         bparm.APP_len = 0;
 534         bparm.odd_even = 0;
 535     bparm.decimation = 0;
 536     bparm.quality = device->quality;
 537     bzero(bparm.APP_data, sizeof(bparm.APP_data));
 538
 539         if(ioctl(jvideo_fd, BUZIOC_S_PARAMS, &bparm) < 0)
 540                 perror("VDeviceBUZ::open_input BUZIOC_S_PARAMS");
 541
 542 // printf("open_input %d %d %d %d %d %d %d %d %d %d %d %d\n",
 543 //              bparm.HorDcm,
 544 //              bparm.VerDcm,
 545 //              bparm.TmpDcm,
 546 //              bparm.field_per_buff,
 547 //              bparm.img_width,
 548 //              bparm.img_height,
 549 //              bparm.img_x,
 550 //              bparm.img_y,
 551 //              bparm.APP_len,
 552 //              bparm.odd_even,
 553 //      bparm.decimation,
 554 //      bparm.quality);
 555
 556         breq.count = device->in_config->capture_length;
 557         breq.size = INPUT_BUFFER_SIZE;
 558         if(ioctl(jvideo_fd, BUZIOC_REQBUFS, &breq) < 0)
 559                 perror("VDeviceBUZ::open_input BUZIOC_REQBUFS");
 560
 561 //printf("open_input %s %d %d %d %d\n", device->in_config->buz_in_device, breq.count, breq.size, bparm.img_width, bparm.img_height);
 562         if((input_buffer = (char*)mmap(0,
 563                 breq.count * breq.size,
 564                 PROT_READ,
 565                 MAP_SHARED,
 566                 jvideo_fd,
 567                 0)) <= 0)
 568                 perror("VDeviceBUZ::open_input mmap");
 569
 570
 571 // Set picture quality
 572         struct video_picture picture_params;
 573 // This call takes a long time in 2.4.22
 574         if(ioctl(jvideo_fd, VIDIOCGPICT, &picture_params) < 0)
 575                 perror("VDeviceBUZ::set_picture VIDIOCGPICT");
 576         picture_params.brightness = brightness;
 577         picture_params.hue = hue;
 578         picture_params.colour = color;
 579         picture_params.contrast = contrast;
 580         picture_params.whiteness = whiteness;
 581 // This call takes a long time in 2.4.22
 582         if(ioctl(jvideo_fd, VIDIOCSPICT, &picture_params) < 0)
 583                 perror("VDeviceBUZ::set_picture VIDIOCSPICT");
 584         if(ioctl(jvideo_fd, VIDIOCGPICT, &picture_params) < 0)
 585                 perror("VDeviceBUZ::set_picture VIDIOCGPICT");
 586
 587
 588
 589
 590 // Start capturing
 591         for(int i = 0; i < breq.count; i++)
 592         {
 593         if(ioctl(jvideo_fd, BUZIOC_QBUF_CAPT, &i) < 0)
 594                         perror("VDeviceBUZ::open_input BUZIOC_QBUF_CAPT");
 595         }
 596
 597
 598         input_thread = new VDeviceBUZInput(this);
 599         input_thread->start();
 600 //printf("VDeviceBUZ::open_input_core 2\n");
 601         return 0;
 602 }
 603
 604 int VDeviceBUZ::open_output_core(Channel *channel)
 605 {
 606 //printf("VDeviceBUZ::open_output 1\n");
 607         total_loops = 0;
 608         output_number = 0;
 609         jvideo_fd = open(device->out_config->buz_out_device, O_RDWR);
 610         if(jvideo_fd <= 0)
 611         {
 612                 perror("VDeviceBUZ::open_output");
 613                 return 1;
 614         }
 615
 616
 617 // Set current input source
 618         if(channel)
 619         {
 620                 struct video_channel vch;
 621                 vch.channel = channel->input;
 622                 vch.norm = get_norm(channel->norm);
 623
 624                 if(ioctl(jvideo_fd, VIDIOCSCHAN, &vch) < 0)
 625                         perror("VDeviceBUZ::open_output_core VIDIOCSCHAN ");
 626         }
 627
 628         breq.count = 10;
 629         breq.size = INPUT_BUFFER_SIZE;
 630         if(ioctl(jvideo_fd, BUZIOC_REQBUFS, &breq) < 0)
 631                 perror("VDeviceBUZ::open_output BUZIOC_REQBUFS");
 632         if((output_buffer = (char*)mmap(0,
 633                 breq.count * breq.size,
 634                 PROT_READ | PROT_WRITE,
 635                 MAP_SHARED,
 636                 jvideo_fd,
 637                 0)) <= 0)
 638                 perror("VDeviceBUZ::open_output mmap");
 639
 640         if(ioctl(jvideo_fd, BUZIOC_G_PARAMS, &bparm) < 0)
 641                 perror("VDeviceBUZ::open_output BUZIOC_G_PARAMS");
 642
 643         bparm.decimation = 1;
 644         bparm.HorDcm = 1;
 645         bparm.field_per_buff = 2;
 646         bparm.TmpDcm = 1;
 647         bparm.VerDcm = 1;
 648         bparm.img_width = device->out_w;
 649         bparm.img_height = device->out_h / bparm.field_per_buff;
 650         bparm.img_x = 0;
 651         bparm.img_y = 0;
 652         bparm.odd_even = 0;
 653
 654         if(ioctl(jvideo_fd, BUZIOC_S_PARAMS, &bparm) < 0)
 655                 perror("VDeviceBUZ::open_output BUZIOC_S_PARAMS");
 656 //printf("VDeviceBUZ::open_output 2\n");
 657         return 0;
 658 }
 659
 660
 661
 662 int VDeviceBUZ::write_buffer(VFrame **frames, EDL *edl)
 663 {
 664 //printf("VDeviceBUZ::write_buffer 1\n");
 665         tuner_lock->lock("VDeviceBUZ::write_buffer");
 666
 667         if(!jvideo_fd) open_output_core(0);
 668
 669         VFrame *ptr = 0;
 670         if(frames[0]->get_color_model() != BC_COMPRESSED)
 671         {
 672                 if(!temp_frame) temp_frame = new VFrame;
 673                 if(!mjpeg)
 674                 {
 675                         mjpeg = mjpeg_new(device->out_w, device->out_h, 2);
 676                         mjpeg_set_quality(mjpeg, device->quality);
 677                         mjpeg_set_float(mjpeg, 0);
 678                 }
 679                 ptr = temp_frame;
 680                 mjpeg_compress(mjpeg,
 681                         frames[0]->get_rows(),
 682                         frames[0]->get_y(),
 683                         frames[0]->get_u(),
 684                         frames[0]->get_v(),
 685                         frames[0]->get_color_model(),
 686                         device->cpus);
 687                 temp_frame->allocate_compressed_data(mjpeg_output_size(mjpeg));
 688                 temp_frame->set_compressed_size(mjpeg_output_size(mjpeg));
 689                 bcopy(mjpeg_output_buffer(mjpeg), temp_frame->get_data(), mjpeg_output_size(mjpeg));
 690         }
 691         else
 692                 ptr = frames[0];
 693
 694 // Wait for frame to become available
 695 // Caused close_output_core to lock up.
 696 //      if(total_loops >= 1)
 697 //      {
 698 //              if(ioctl(jvideo_fd, BUZIOC_SYNC, &output_number) < 0)
 699 //                      perror("VDeviceBUZ::write_buffer BUZIOC_SYNC");
 700 //      }
 701
 702         if(device->out_config->buz_swap_fields)
 703         {
 704                 long field2_offset = mjpeg_get_field2((unsigned char*)ptr->get_data(),
 705                         ptr->get_compressed_size());
 706                 long field2_len = ptr->get_compressed_size() - field2_offset;
 707                 memcpy(output_buffer + output_number * breq.size,
 708                         ptr->get_data() + field2_offset,
 709                         field2_len);
 710                 memcpy(output_buffer + output_number * breq.size +field2_len,
 711                         ptr->get_data(),
 712                         field2_offset);
 713         }
 714         else
 715         {
 716                 bcopy(ptr->get_data(),
 717                         output_buffer + output_number * breq.size,
 718                         ptr->get_compressed_size());
 719         }
 720
 721         if(ioctl(jvideo_fd, BUZIOC_QBUF_PLAY, &output_number) < 0)
 722                 perror("VDeviceBUZ::write_buffer BUZIOC_QBUF_PLAY");
 723
 724         output_number++;
 725         if(output_number >= breq.count)
 726         {
 727                 output_number = 0;
 728                 total_loops++;
 729         }
 730         tuner_lock->unlock();
 731 //printf("VDeviceBUZ::write_buffer 2\n");
 732
 733         return 0;
 734 }
 735
 736 void VDeviceBUZ::new_output_buffer(VFrame **outputs,
 737         int colormodel)
 738 {
 739 //printf("VDeviceBUZ::new_output_buffer 1 %d\n", colormodel);
 740         if(user_frame)
 741         {
 742                 if(colormodel != user_frame->get_color_model())
 743                 {
 744                         delete user_frame;
 745                         user_frame = 0;
 746                 }
 747         }
 748
 749         if(!user_frame)
 750         {
 751                 switch(colormodel)
 752                 {
 753                         case BC_COMPRESSED:
 754                                 user_frame = new VFrame;
 755                                 break;
 756                         default:
 757                                 user_frame = new VFrame(0,
 758                                         device->out_w,
 759                                         device->out_h,
 760                                         colormodel,
 761                                         -1);
 762                                 break;
 763                 }
 764         }
 765         user_frame->set_shm_offset(0);
 766         outputs[0] = user_frame;
 767 //printf("VDeviceBUZ::new_output_buffer 2\n");
 768 }
 769
 770
 771 ArrayList<int>* VDeviceBUZ::get_render_strategies()
 772 {
 773         return &render_strategies;
 774 }
 775