cinelerra-5.1/guicast/bcbitmap.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2009 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 #include "bcbitmap.h"
  23 #include "bcipc.h"
  24 #include "bcresources.h"
  25 #include "bcsignals.h"
  26 #include "bcwindow.h"
  27 #include "bccmodels.h"
  28 #include "vframe.h"
  29
  30 #include <string.h>
  31 #include <unistd.h>
  32 #include <X11/extensions/Xvlib.h>
  33
  34 int BC_Bitmap::max_active_buffers = 0;
  35 int BC_Bitmap::zombies = 0;
  36
  37
  38 BC_BitmapImage::BC_BitmapImage(BC_Bitmap *bitmap, int index)
  39 {
  40         this->index = index;
  41         this->bitmap = bitmap;
  42         this->top_level = bitmap->top_level;
  43         this->drawable = 0;
  44         this->data = 0;
  45         this->row_data = 0;
  46         this->dataSize = 0;
  47         this->bytesPerLine = 0;
  48         this->bitsPerPixel = 0;
  49 }
  50
  51 BC_BitmapImage::~BC_BitmapImage()
  52 {
  53         delete [] data;
  54         delete [] row_data;
  55 }
  56
  57 bool BC_BitmapImage::is_avail()
  58 {
  59         return list == &bitmap->avail;
  60 }
  61
  62 BC_BitmapImage *BC_Bitmap::cur_bfr()
  63 {
  64         if( !active_bfr ) {
  65                 avail_lock->lock("BC_Bitmap::cur_bfr 1");
  66                 if( (!use_shm || top_level->is_running()) &&
  67                      (active_bfr=avail.first) != 0 )
  68                         avail.remove_pointer(active_bfr);
  69                 else {
  70                         update_buffers(buffer_count+1, 0);
  71                         if( (active_bfr=avail.first) != 0 )
  72                                 avail.remove_pointer(active_bfr);
  73                         else
  74                                 active_bfr = new_buffer(type, -1);
  75                 }
  76                 avail_lock->unlock();
  77         }
  78         return active_bfr;
  79 }
  80
  81 int BC_BitmapImage::
  82 read_frame_rgb(VFrame *frame)
  83 {
  84         int w = bitmap->w, h = bitmap->h;
  85         if( frame->get_w() != w || frame->get_h() != h ||
  86             frame->get_color_model() != BC_RGB888 )
  87                 frame->reallocate(0, 0, 0, 0, 0, w, h, BC_RGB888, -1);
  88         uint8_t *dp = frame->get_data();
  89         int rmask = ximage->red_mask;
  90         int gmask = ximage->green_mask;
  91         int bmask = ximage->blue_mask;
  92 //due to a bug in the xserver, the mask is being cleared by XShm.C:402
  93 //  when a faulty data in a XShmGetImage reply returns a zero visual
  94 //workaround, use the original visual for the mask data
  95         if ( !rmask ) rmask = bitmap->top_level->vis->red_mask;
  96         if ( !gmask ) gmask = bitmap->top_level->vis->green_mask;
  97         if ( !bmask ) bmask = bitmap->top_level->vis->blue_mask;
  98         double fr = 255.0 / rmask;
  99         double fg = 255.0 / gmask;
 100         double fb = 255.0 / bmask;
 101         int nbyte = (ximage->bits_per_pixel+7)/8;
 102         int b0 = ximage->byte_order == MSBFirst ? 0 : nbyte-1;
 103         int bi = ximage->byte_order == MSBFirst ? 1 : -1;
 104         uint8_t *data = (uint8_t *)ximage->data;
 105
 106         for( int y=0;  y<h; ++y ) {
 107                 uint8_t *cp = data + y*ximage->bytes_per_line + b0;
 108                 for( int x=0; x<w; ++x, cp+=nbyte ) {
 109                         uint8_t *bp = cp;  uint32_t n = *bp;
 110                         for( int i=nbyte; --i>0; n=(n<<8)|*bp ) bp += bi;
 111                         *dp++ = (int)((n&rmask)*fr + 0.5);
 112                         *dp++ = (int)((n&gmask)*fg + 0.5);
 113                         *dp++ = (int)((n&bmask)*fb + 0.5);
 114                 }
 115         }
 116         return 0;
 117 }
 118
 119 void BC_Bitmap::reque(BC_BitmapImage *bfr)
 120 {
 121         avail_lock->lock("BC_Bitmap::reque");
 122         --active_buffers;
 123         avail.append(bfr);
 124         avail_lock->unlock();
 125 }
 126
 127 BC_XvShmImage::BC_XvShmImage(BC_Bitmap *bitmap, int index,
 128         int w, int h, int color_model)
 129  : BC_BitmapImage(bitmap, index)
 130 {
 131         Display *display = top_level->get_display();
 132         int id = BC_CModels::bc_to_x(color_model);
 133 // Create the XvImage
 134         xv_image = XvShmCreateImage(display, bitmap->xv_portid, id,
 135                         0, w, h, &shm_info);
 136         dataSize = xv_image->data_size;
 137 // Create the shared memory
 138         shm_info.shmid = shmget(IPC_PRIVATE,
 139                 dataSize + 8, IPC_CREAT | 0777);
 140         if(shm_info.shmid < 0)
 141                 perror("BC_XvShmImage::BC_XvShmImage shmget");
 142         data = (unsigned char *)shmat(shm_info.shmid, NULL, 0);
 143 // This causes it to automatically delete when the program exits.
 144         shmctl(shm_info.shmid, IPC_RMID, 0);
 145 // setting ximage->data stops BadValue
 146         xv_image->data = shm_info.shmaddr = (char*)data;
 147         shm_info.readOnly = 0;
 148 // Get the real parameters
 149         w = xv_image->width;
 150         h = xv_image->height;
 151         if(!XShmAttach(top_level->display, &shm_info))
 152                 perror("BC_XvShmImage::BC_XvShmImage XShmAttach");
 153         if( color_model == BC_YUV422 || color_model == BC_UVY422 ) {
 154                 bytesPerLine = w*2;
 155                 bitsPerPixel = 12;
 156                 row_data = new unsigned char*[h];
 157                 for( int i=0; i<h; ++i )
 158                         row_data[i] = &data[i*bytesPerLine];
 159         }
 160 }
 161
 162 BC_XvShmImage::~BC_XvShmImage()
 163 {
 164         data = 0;
 165         XFree(xv_image);
 166         XShmDetach(top_level->display, &shm_info);
 167         shmdt(shm_info.shmaddr);
 168 }
 169
 170
 171 BC_XShmImage::BC_XShmImage(BC_Bitmap *bitmap, int index,
 172         int w, int h, int color_model)
 173  : BC_BitmapImage(bitmap, index)
 174 {
 175         Display *display = top_level->display;
 176         Visual *visual = top_level->vis;
 177         int default_depth = bitmap->get_default_depth();
 178         ximage = XShmCreateImage(display, visual,
 179                 default_depth, default_depth == 1 ? XYBitmap : ZPixmap,
 180                 (char*)NULL, &shm_info, w, h);
 181 // Create shared memory
 182         bytesPerLine = ximage->bytes_per_line;
 183         bitsPerPixel = ximage->bits_per_pixel;
 184         dataSize = h * bytesPerLine;
 185         shm_info.shmid = shmget(IPC_PRIVATE,
 186                 dataSize + 8, IPC_CREAT | 0777);
 187         if(shm_info.shmid < 0)
 188                 perror("BC_XShmImage::BC_XShmImage shmget");
 189         data = (unsigned char *)shmat(shm_info.shmid, NULL, 0);
 190 // This causes it to automatically delete when the program exits.
 191         shmctl(shm_info.shmid, IPC_RMID, 0);
 192         ximage->data = shm_info.shmaddr = (char*)data;
 193         shm_info.readOnly = 0;
 194 // Get the real parameters
 195         if(!XShmAttach(top_level->display, &shm_info))
 196                 perror("BC_XShmImage::BC_XShmImage XShmAttach");
 197         row_data = new unsigned char*[h];
 198         for( int i=0; i<h; ++i )
 199                 row_data[i] = &data[i*bytesPerLine];
 200 }
 201
 202 BC_XShmImage::~BC_XShmImage()
 203 {
 204         data = 0;
 205         ximage->data = 0;
 206         XDestroyImage(ximage);
 207         XShmDetach(top_level->display, &shm_info);
 208         XFlush(top_level->display);
 209         shmdt(shm_info.shmaddr);
 210 }
 211
 212
 213
 214 BC_XvImage::BC_XvImage(BC_Bitmap *bitmap, int index,
 215         int w, int h, int color_model)
 216  : BC_BitmapImage(bitmap, index)
 217 {
 218         Display *display = top_level->display;
 219         int id = BC_CModels::bc_to_x(color_model);
 220         xv_image = XvCreateImage(display, bitmap->xv_portid, id, 0, w, h);
 221         dataSize = xv_image->data_size;
 222         long data_sz = dataSize + 8;
 223         data = new unsigned char[data_sz];
 224         memset(data, 0, data_sz);
 225         xv_image->data = (char *) data;
 226         w = xv_image->width;
 227         h = xv_image->height;
 228         if( color_model == BC_YUV422 || color_model == BC_UVY422 ) {
 229                 int bytesPerLine = w*2;
 230                 row_data = new unsigned char*[h];
 231                 for( int i=0; i<h; ++i )
 232                         row_data[i] = &data[i*bytesPerLine];
 233         }
 234 }
 235
 236 BC_XvImage::~BC_XvImage()
 237 {
 238         XFree(xv_image);
 239 }
 240
 241
 242 BC_XImage::BC_XImage(BC_Bitmap *bitmap, int index,
 243         int w, int h, int color_model)
 244  : BC_BitmapImage(bitmap, index)
 245 {
 246         Display *display = top_level->display;
 247         Visual *visual = top_level->vis;
 248         int default_depth = bitmap->get_default_depth();
 249         ximage = XCreateImage(display, visual, default_depth,
 250                 default_depth == 1 ? XYBitmap : ZPixmap,
 251                 0, (char*)data, w, h, 8, 0);
 252         bytesPerLine = ximage->bytes_per_line;
 253         bitsPerPixel = ximage->bits_per_pixel;
 254         dataSize = h * bytesPerLine;
 255         long data_sz = dataSize + 8;
 256         data = new unsigned char[data_sz];
 257         memset(data, 0, data_sz);
 258         ximage->data = (char*) data;
 259         row_data = new unsigned char*[h];
 260         for( int i=0; i<h; ++i )
 261                 row_data[i] = &data[i*bytesPerLine];
 262 }
 263
 264 BC_XImage::~BC_XImage()
 265 {
 266         delete [] data;
 267         data = 0;
 268         ximage->data = 0;
 269         XDestroyImage(ximage);
 270 }
 271
 272
 273 BC_Bitmap::BC_Bitmap(BC_WindowBase *parent_window, unsigned char *png_data, double scale)
 274 {
 275 // Decompress data into a temporary vframe
 276         VFramePng frame(png_data, scale);
 277
 278         avail_lock = 0;
 279 // Initialize the bitmap
 280         initialize(parent_window,
 281                 frame.get_w(),
 282                 frame.get_h(),
 283                 parent_window->get_color_model(),
 284                 0);
 285
 286 // Copy the vframe to the bitmap
 287         read_frame(&frame, 0, 0, w, h);
 288 }
 289
 290 BC_Bitmap::BC_Bitmap(BC_WindowBase *parent_window, VFrame *frame)
 291 {
 292         avail_lock = 0;
 293 // Initialize the bitmap
 294         initialize(parent_window,
 295                 frame->get_w(),
 296                 frame->get_h(),
 297                 parent_window->get_color_model(),
 298                 0);
 299
 300 // Copy the vframe to the bitmap
 301         read_frame(frame, 0, 0, w, h);
 302 }
 303
 304 BC_Bitmap::BC_Bitmap(BC_WindowBase *parent_window,
 305         int w, int h, int color_model, int use_shm)
 306 {
 307         avail_lock = 0;
 308         initialize(parent_window, w, h, color_model, use_shm);
 309 }
 310
 311 BC_Bitmap::~BC_Bitmap()
 312 {
 313         delete_data();
 314         delete avail_lock;
 315 }
 316
 317 int BC_Bitmap::initialize(BC_WindowBase *parent_window,
 318         int w, int h, int color_model, int use_shm)
 319 {
 320         BC_Resources *resources = parent_window->get_resources();
 321         this->parent_window = parent_window;
 322         this->top_level = parent_window->top_level;
 323         this->xv_portid = resources->use_xvideo ? top_level->xvideo_port_id : -1;
 324         if( w < 1 ) w = 1;
 325         if( h < 1 ) h = 1;
 326         this->w = w;
 327         this->h = h;
 328         this->color_model = color_model;
 329         this->use_shm = !use_shm ? 0 : need_shm();
 330         this->shm_reply = this->use_shm && resources->shm_reply ? 1 : 0;
 331         // dont use shm for less than one page
 332         if( !this->avail_lock )
 333                 this->avail_lock = new Mutex("BC_Bitmap::avail_lock");
 334         else
 335                 this->avail_lock->reset();
 336         this->buffers = 0;
 337
 338         this->active_bfr = 0;
 339         this->buffer_count = 0;
 340         this->max_buffer_count = 0;
 341         this->active_buffers = 0;
 342         allocate_data();
 343         return 0;
 344 }
 345
 346 int BC_Bitmap::match_params(int w, int h, int color_model, int use_shm)
 347 {
 348         if( use_shm ) use_shm = need_shm();
 349         if(this->w /* != */ < w || this->h /* != */ < h ||
 350            this->color_model != color_model || this->use_shm != use_shm) {
 351                 delete_data();
 352                 initialize(parent_window, w, h, color_model, use_shm);
 353         }
 354
 355         return 0;
 356 }
 357
 358 int BC_Bitmap::params_match(int w, int h, int color_model, int use_shm)
 359 {
 360         int result = 0;
 361         if( use_shm ) use_shm = need_shm();
 362         if(this->w == w && this->h == h && this->color_model == color_model) {
 363                 if(use_shm == this->use_shm || use_shm == BC_INFINITY)
 364                         result = 1;
 365         }
 366         return result;
 367 }
 368
 369 BC_BitmapImage *BC_Bitmap::new_buffer(int type, int idx)
 370 {
 371         BC_BitmapImage *buffer = 0;
 372         if( idx < 0 ) {
 373                 if( type == bmXShmImage ) type = bmXImage;
 374                 else if( type ==  bmXvShmImage ) type = bmXvImage;
 375         }
 376         switch( type ) {
 377         default:
 378         case bmXImage:
 379                 buffer = new BC_XImage(this, idx, w, h, color_model);
 380                 break;
 381         case bmXvImage:
 382                 buffer = new BC_XvImage(this, idx, w, h, color_model);
 383                 break;
 384         case bmXShmImage:
 385                 buffer = new BC_XShmImage(this, idx, w, h, color_model);
 386                 break;
 387         case bmXvShmImage:
 388                 buffer = new BC_XvShmImage(this, idx, w, h, color_model);
 389                 break;
 390         }
 391         if( buffer->is_zombie() ) ++zombies;
 392         return buffer;
 393 }
 394
 395 void BC_Bitmap::
 396 update_buffers(int count, int lock_avail)
 397 {
 398         int i;
 399         // can deadlock in XReply (libxcb bug) without this lock
 400         //top_level->lock_window("BC_Bitmap::update_buffers");
 401         if( lock_avail ) avail_lock->lock("BC_Bitmap::update_buffers");
 402         if( count > max_buffer_count ) count = max_buffer_count;
 403         BC_BitmapImage **new_buffers = !count ? 0 : new BC_BitmapImage *[count];
 404         if( buffer_count < count ) {
 405                 for( i=0; i<buffer_count; ++i )
 406                         new_buffers[i] = buffers[i];
 407                 while( i < count ) {
 408                         BC_BitmapImage *buffer = new_buffer(type, i);
 409                         new_buffers[i] = buffer;
 410                         avail.append(buffer);
 411                         ++i;
 412                 }
 413         }
 414         else {
 415                 for( i=0; i<count; ++i )
 416                         new_buffers[i] = buffers[i];
 417                 while( i < buffer_count ) {
 418                         BC_BitmapImage *buffer = buffers[i];
 419                         if( buffer == active_bfr ) active_bfr = 0;
 420                         if( buffer->is_avail() ) {
 421                                 delete buffer;
 422                         }
 423                         else {
 424                                 ++zombies;
 425                                 buffer->index = -1;
 426                         }
 427                         ++i;
 428                 }
 429         }
 430         delete [] buffers;
 431         buffers = new_buffers;
 432         buffer_count = count;
 433         XFlush(top_level->display);
 434         if( lock_avail ) avail_lock->unlock();
 435         //top_level->unlock_window();
 436 }
 437
 438 int BC_Bitmap::allocate_data()
 439 {
 440         int count = 1;
 441         max_buffer_count = MAX_BITMAP_BUFFERS;
 442         if(use_shm) { // Use shared memory.
 443                 int bsz = best_buffer_size();
 444                 if( bsz >= 0x800000 ) max_buffer_count = 2;
 445                 else if( bsz >= 0x400000 ) max_buffer_count /= 8;
 446                 else if( bsz >= 0x100000 ) max_buffer_count /= 4;
 447                 else if( bsz >= 0x10000 ) max_buffer_count /= 2;
 448                 type = hardware_scaling() ? bmXvShmImage : bmXShmImage;
 449                 count = MIN_BITMAP_BUFFERS;
 450         }
 451         else // use unshared memory.
 452                 type = hardware_scaling() ? bmXvImage : bmXImage;
 453         update_buffers(count);
 454         return 0;
 455 }
 456
 457 int BC_Bitmap::delete_data()
 458 {
 459 //printf("BC_Bitmap::delete_data 1\n");
 460         update_buffers(0);
 461         active_bfr = 0;
 462         buffer_count = 0;
 463         max_buffer_count = 0;
 464         return 0;
 465 }
 466
 467 int BC_Bitmap::get_default_depth()
 468 {
 469         return color_model == BC_TRANSPARENCY ? 1 : top_level->default_depth;
 470 }
 471
 472 long BC_Bitmap::best_buffer_size()
 473 {
 474         long pixelsize = BC_CModels::calculate_pixelsize(get_color_model());
 475         return pixelsize * w * h;
 476 }
 477
 478 int BC_Bitmap::need_shm()
 479 {
 480 // dont use shm for less than one page
 481         return best_buffer_size() < 0x1000 ? 0 :
 482                 parent_window->get_resources()->use_shm > 0 ? 1 : 0;
 483 }
 484
 485 int BC_Bitmap::invert()
 486 {
 487         for( int j=0; j<buffer_count; ++j ) {
 488                 unsigned char **rows = buffers[j]->get_row_data();
 489                 if( !rows ) continue;
 490                 long bytesPerLine = buffers[j]->bytes_per_line();
 491                 for( int k=0; k<h; ++k ) {
 492                         unsigned char *bp = rows[k];
 493                         for( int i=0; i<bytesPerLine; ++i )
 494                                 *bp++ ^= 0xff;
 495                 }
 496         }
 497         return 0;
 498 }
 499
 500 int BC_XShmImage::get_shm_size()
 501 {
 502         return bytesPerLine * bitmap->h;
 503 }
 504
 505 int BC_Bitmap::write_drawable(Drawable &pixmap, GC &gc,
 506         int dest_x, int dest_y, int source_x, int source_y,
 507         int dest_w, int dest_h, int dont_wait)
 508 {
 509         return write_drawable(pixmap, gc,
 510                 source_x, source_y, get_w() - source_x, get_h() - source_y,
 511                 dest_x, dest_y, dest_w, dest_h, dont_wait);
 512 }
 513
 514 int BC_XImage::write_drawable(Drawable &pixmap, GC &gc,
 515         int source_x, int source_y, int source_w, int source_h,
 516         int dest_x, int dest_y, int dest_w, int dest_h)
 517 {
 518         XPutImage(top_level->display, pixmap, gc,
 519                 ximage, source_x, source_y,
 520                 dest_x, dest_y, dest_w, dest_h);
 521         return 0;
 522 }
 523
 524 int BC_XShmImage::write_drawable(Drawable &pixmap, GC &gc,
 525         int source_x, int source_y, int source_w, int source_h,
 526         int dest_x, int dest_y, int dest_w, int dest_h)
 527 {
 528         XShmPutImage(top_level->display, pixmap, gc,
 529                 ximage, source_x, source_y,
 530                 dest_x, dest_y, dest_w, dest_h, bitmap->shm_reply);
 531         return 0;
 532 }
 533
 534 int BC_XvImage::write_drawable(Drawable &pixmap, GC &gc,
 535         int source_x, int source_y, int source_w, int source_h,
 536         int dest_x, int dest_y, int dest_w, int dest_h)
 537 {
 538         XvPutImage(top_level->display,
 539                 bitmap->xv_portid, pixmap, gc, xv_image,
 540                 source_x, source_y, source_w, source_h,
 541                 dest_x, dest_y, dest_w, dest_h);
 542         return 0;
 543 }
 544
 545 int BC_XvShmImage::write_drawable(Drawable &pixmap, GC &gc,
 546         int source_x, int source_y, int source_w, int source_h,
 547         int dest_x, int dest_y, int dest_w, int dest_h)
 548 {
 549         XvShmPutImage(top_level->display,
 550                 bitmap->xv_portid, pixmap, gc, xv_image,
 551                 source_x, source_y, source_w, source_h,
 552                 dest_x, dest_y, dest_w, dest_h, bitmap->shm_reply);
 553         return 0;
 554 }
 555
 556 int BC_Bitmap::write_drawable(Drawable &pixmap, GC &gc,
 557                 int source_x, int source_y, int source_w, int source_h,
 558                 int dest_x, int dest_y, int dest_w, int dest_h,
 559                 int dont_wait)
 560 {
 561 //printf("BC_Bitmap::write_drawable 1 %p %d\n", this, current_ringbuffer); fflush(stdout);
 562         //if( dont_wait ) XSync(top_level->display, False);
 563         BC_BitmapImage *bfr = cur_bfr();
 564         if( !bfr->is_zombie() && is_shared() && shm_reply ) {
 565 //printf("activate %p %08lx\n",bfr,bfr->get_shmseg());
 566                 top_level->active_bitmaps.insert(bfr, pixmap);
 567                 if( ++active_buffers > max_active_buffers )
 568                         max_active_buffers = active_buffers;
 569         }
 570         bfr->write_drawable(pixmap, gc,
 571                 source_x, source_y, source_w, source_h,
 572                 dest_x, dest_y, dest_w, dest_h);
 573         XFlush(top_level->display);
 574         avail_lock->lock(" BC_Bitmap::write_drawable");
 575         if( bfr->is_zombie() ) {
 576                 delete bfr;
 577                 --zombies;
 578         }
 579         else if( is_unshared() || !shm_reply )
 580                 avail.append(bfr);
 581         active_bfr = 0;
 582         avail_lock->unlock();
 583         if( !dont_wait && !shm_reply )
 584                 XSync(top_level->display, False);
 585         return 0;
 586 }
 587
 588
 589 int BC_XImage::read_drawable(Drawable &pixmap, int source_x, int source_y)
 590 {
 591         XGetSubImage(top_level->display, pixmap,
 592                 source_x, source_y, bitmap->w, bitmap->h,
 593                 0xffffffff, ZPixmap, ximage, 0, 0);
 594         return 0;
 595 }
 596
 597 int BC_XShmImage::read_drawable(Drawable &pixmap, int source_x, int source_y)
 598 {
 599         XShmGetImage(top_level->display, pixmap,
 600                 ximage, source_x, source_y, 0xffffffff);
 601         return 0;
 602 }
 603
 604 int BC_Bitmap::read_drawable(Drawable &pixmap, int source_x, int source_y, VFrame *frame)
 605 {
 606         BC_BitmapImage *bfr = cur_bfr();
 607         int result = bfr->read_drawable(pixmap, source_x, source_y);
 608         if( !result && frame ) result = bfr->read_frame_rgb(frame);
 609         return result;
 610 }
 611
 612
 613 // ============================ Decoding VFrames
 614
 615 int BC_Bitmap::read_frame(VFrame *frame, int x1, int y1, int x2, int y2)
 616 {
 617         return read_frame(frame, x1, y1, x2, y2, parent_window->get_bg_color());
 618 }
 619
 620 int BC_Bitmap::read_frame(VFrame *frame, int x1, int y1, int x2, int y2, int bg_color)
 621 {
 622         return read_frame(frame,
 623                 0, 0, frame->get_w(), frame->get_h(),
 624                 x1, y1, x2 - x1, y2 - y1, bg_color);
 625 }
 626
 627
 628 int BC_Bitmap::read_frame(VFrame *frame,
 629         int in_x, int in_y, int in_w, int in_h,
 630         int out_x, int out_y, int out_w, int out_h, int bg_color)
 631 {
 632         BC_BitmapImage *bfr = cur_bfr();
 633         if( hardware_scaling() && frame->get_color_model() == color_model ) {
 634 // Hardware accelerated bitmap
 635                 switch(color_model) {
 636                 case BC_YUV420P:
 637                         memcpy(bfr->get_y_data(), frame->get_y(), w * h);
 638                         memcpy(bfr->get_u_data(), frame->get_u(), w * h / 4);
 639                         memcpy(bfr->get_v_data(), frame->get_v(), w * h / 4);
 640                         break;
 641                 case BC_YUV422P:
 642                         memcpy(bfr->get_y_data(), frame->get_y(), w * h);
 643                         memcpy(bfr->get_u_data(), frame->get_u(), w * h / 2);
 644                         memcpy(bfr->get_v_data(), frame->get_v(), w * h / 2);
 645                         break;
 646                 default:
 647                 case BC_YUV422:
 648                 case BC_UVY422:
 649                         memcpy(get_data(), frame->get_data(), w * h + w * h);
 650                         break;
 651                 }
 652         }
 653         else {
 654 // Software only
 655
 656 //printf("BC_Bitmap::read_frame %d -> %d %d %d %d %d -> %d %d %d %d\n",
 657 //  frame->get_color_model(), color_model,
 658 //  in_x, in_y, in_w, in_h, out_x, out_y, out_w, out_h);
 659 //if(color_model == 6 && frame->get_color_model() == 19)
 660 //printf("BC_Bitmap::read_frame 1 %d %d %d %d\n", frame->get_w(), frame->get_h(), get_w(), get_h());
 661                 BC_CModels::transfer(
 662                         bfr->get_row_data(), frame->get_rows(),
 663                         bfr->get_y_data(), bfr->get_u_data(), bfr->get_v_data(),
 664                         frame->get_y(), frame->get_u(), frame->get_v(),
 665                         in_x, in_y, in_w, in_h,
 666                         out_x, out_y, out_w, out_h,
 667                         frame->get_color_model(), color_model,
 668                         bg_color, frame->get_w(), w);
 669
 670                 if( color_model == BC_TRANSPARENCY && !top_level->server_byte_order )
 671                         transparency_bitswap(frame->get_data(), w, h);
 672 //if(color_model == 6 && frame->get_color_model() == 19)
 673 //printf("BC_Bitmap::read_frame 2\n");
 674         }
 675
 676         return 0;
 677 }
 678
 679 uint8_t BC_Bitmap::bitswap[256]={
 680   0x00,0x80,0x40,0xc0,0x20,0xa0,0x60,0xe0,0x10,0x90,0x50,0xd0,0x30,0xb0,0x70,0xf0,
 681   0x08,0x88,0x48,0xc8,0x28,0xa8,0x68,0xe8,0x18,0x98,0x58,0xd8,0x38,0xb8,0x78,0xf8,
 682   0x04,0x84,0x44,0xc4,0x24,0xa4,0x64,0xe4,0x14,0x94,0x54,0xd4,0x34,0xb4,0x74,0xf4,
 683   0x0c,0x8c,0x4c,0xcc,0x2c,0xac,0x6c,0xec,0x1c,0x9c,0x5c,0xdc,0x3c,0xbc,0x7c,0xfc,
 684   0x02,0x82,0x42,0xc2,0x22,0xa2,0x62,0xe2,0x12,0x92,0x52,0xd2,0x32,0xb2,0x72,0xf2,
 685   0x0a,0x8a,0x4a,0xca,0x2a,0xaa,0x6a,0xea,0x1a,0x9a,0x5a,0xda,0x3a,0xba,0x7a,0xfa,
 686   0x06,0x86,0x46,0xc6,0x26,0xa6,0x66,0xe6,0x16,0x96,0x56,0xd6,0x36,0xb6,0x76,0xf6,
 687   0x0e,0x8e,0x4e,0xce,0x2e,0xae,0x6e,0xee,0x1e,0x9e,0x5e,0xde,0x3e,0xbe,0x7e,0xfe,
 688   0x01,0x81,0x41,0xc1,0x21,0xa1,0x61,0xe1,0x11,0x91,0x51,0xd1,0x31,0xb1,0x71,0xf1,
 689   0x09,0x89,0x49,0xc9,0x29,0xa9,0x69,0xe9,0x19,0x99,0x59,0xd9,0x39,0xb9,0x79,0xf9,
 690   0x05,0x85,0x45,0xc5,0x25,0xa5,0x65,0xe5,0x15,0x95,0x55,0xd5,0x35,0xb5,0x75,0xf5,
 691   0x0d,0x8d,0x4d,0xcd,0x2d,0xad,0x6d,0xed,0x1d,0x9d,0x5d,0xdd,0x3d,0xbd,0x7d,0xfd,
 692   0x03,0x83,0x43,0xc3,0x23,0xa3,0x63,0xe3,0x13,0x93,0x53,0xd3,0x33,0xb3,0x73,0xf3,
 693   0x0b,0x8b,0x4b,0xcb,0x2b,0xab,0x6b,0xeb,0x1b,0x9b,0x5b,0xdb,0x3b,0xbb,0x7b,0xfb,
 694   0x07,0x87,0x47,0xc7,0x27,0xa7,0x67,0xe7,0x17,0x97,0x57,0xd7,0x37,0xb7,0x77,0xf7,
 695   0x0f,0x8f,0x4f,0xcf,0x2f,0xaf,0x6f,0xef,0x1f,0x9f,0x5f,0xdf,0x3f,0xbf,0x7f,0xff,
 696 };
 697
 698 void BC_Bitmap::transparency_bitswap(uint8_t *buf, int w, int h)
 699 {
 700         w = ((w-1) | 7) + 1;
 701         int len = w * h / 8;
 702         int i;
 703         for(i=0 ; i+8<=len ; i+=8){
 704                 buf[i+0] = bitswap[buf[i+0]];
 705                 buf[i+1] = bitswap[buf[i+1]];
 706                 buf[i+2] = bitswap[buf[i+2]];
 707                 buf[i+3] = bitswap[buf[i+3]];
 708                 buf[i+4] = bitswap[buf[i+4]];
 709                 buf[i+5] = bitswap[buf[i+5]];
 710                 buf[i+6] = bitswap[buf[i+6]];
 711                 buf[i+7] = bitswap[buf[i+7]];
 712         }
 713         for( ; i<len ; i++)
 714                 buf[i+0] = bitswap[buf[i+0]];
 715 }
 716