git.sesse.net Git - vlc/blob - modules/video_output/x11/xvmc.c

   1 /*****************************************************************************
   2  * xvmc.c : XVMC plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 1998-2001 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Shane Harper <shanegh@optusnet.com.au>
   8  *          Vincent Seguin <seguin@via.ecp.fr>
   9  *          Samuel Hocevar <sam@zoy.org>
  10  *          David Kennedy <dkennedy@tinytoad.com>
  11  *          Jean-Paul Saman <jpsaman _at_ videolan _dot_ org>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  26  *****************************************************************************/
  27
  28 /*****************************************************************************
  29  * Preamble
  30  *****************************************************************************/
  31
  32 #ifdef HAVE_CONFIG_H
  33 # include "config.h"
  34 #endif
  35
  36 #include <vlc_common.h>
  37 #include <vlc_plugin.h>
  38 #include <vlc_interface.h>
  39 #include <vlc_vout.h>
  40 #include <vlc_keys.h>
  41
  42 #ifdef HAVE_MACHINE_PARAM_H
  43     /* BSD */
  44 #   include <machine/param.h>
  45 #   include <sys/types.h>                                  /* typedef ushort */
  46 #   include <sys/ipc.h>
  47 #endif
  48
  49 #ifndef WIN32
  50 #   include <netinet/in.h>                            /* BSD: struct in_addr */
  51 #endif
  52
  53 #ifdef HAVE_SYS_SHM_H
  54 #   include <sys/shm.h>                                /* shmget(), shmctl() */
  55 #endif
  56
  57 #include <X11/Xlib.h>
  58 #include <X11/Xmd.h>
  59 #include <X11/Xutil.h>
  60 #include <X11/keysym.h>
  61 #ifdef HAVE_SYS_SHM_H
  62 #   include <X11/extensions/XShm.h>
  63 #endif
  64 #ifdef DPMSINFO_IN_DPMS_H
  65 #   include <X11/extensions/dpms.h>
  66 #endif
  67
  68 #include <X11/extensions/Xv.h>
  69 #include <X11/extensions/Xvlib.h>
  70 #include <X11/extensions/vldXvMC.h>
  71
  72 #include "../../codec/xvmc/accel_xvmc.h"
  73 #include "xcommon.h"
  74 #include "../../codec/spudec/spudec.h"
  75 #include <unistd.h>
  76
  77 /* picture structure */
  78 #define TOP_FIELD 1
  79 #define BOTTOM_FIELD 2
  80 #define FRAME_PICTURE 3
  81
  82 /* picture coding type */
  83 #define I_TYPE 1
  84 #define P_TYPE 2
  85 #define B_TYPE 3
  86 #define D_TYPE 4
  87
  88 /*****************************************************************************
  89  * Exported prototypes
  90  *****************************************************************************/
  91 extern int  Activate   ( vlc_object_t * );
  92 extern void Deactivate ( vlc_object_t * );
  93
  94 /*****************************************************************************
  95  * Module descriptor
  96  *****************************************************************************/
  97 #define ADAPTOR_TEXT N_("XVMC adaptor number")
  98 #define ADAPTOR_LONGTEXT N_( \
  99     "If you graphics card provides several adaptors, this option allows you " \
 100     "to choose which one will be used (you shouldn't have to change this).")
 101
 102 #define ALT_FS_TEXT N_("Alternate fullscreen method")
 103 #define ALT_FS_LONGTEXT N_( \
 104     "There are two ways to make a fullscreen window, unfortunately each one " \
 105     "has its drawbacks.\n" \
 106     "1) Let the window manager handle your fullscreen window (default), but " \
 107     "things like taskbars will likely show on top of the video.\n" \
 108     "2) Completely bypass the window manager, but then nothing will be able " \
 109     "to show on top of the video.")
 110
 111 #define DISPLAY_TEXT N_("X11 display name")
 112 #define DISPLAY_LONGTEXT N_( \
 113     "Specify the X11 hardware display you want to use. By default VLC will " \
 114     "use the value of the DISPLAY environment variable.")
 115
 116 #define CHROMA_TEXT N_("XVimage chroma format")
 117 #define CHROMA_LONGTEXT N_( \
 118     "Force the XVideo renderer to use a specific chroma format instead of " \
 119     "trying to improve performances by using the most efficient one.")
 120
 121 #define SHM_TEXT N_("Use shared memory")
 122 #define SHM_LONGTEXT N_( \
 123     "Use shared memory to communicate between VLC and the X server.")
 124
 125 #define SCREEN_TEXT N_("Screen to be used for fullscreen mode.")
 126 #define SCREEN_LONGTEXT N_( \
 127     "Choose the screen you want to use in fullscreen mode. For instance " \
 128     "set it to 0 for first screen, 1 for the second.")
 129
 130 #define MODE_TEXT N_("Deinterlace mode")
 131 #define MODE_LONGTEXT N_("You can choose the default deinterlace mode")
 132
 133 #define CROP_TEXT N_("Crop")
 134 #define CROP_LONGTEXT N_("You can choose the crop style to apply.")
 135
 136 vlc_module_begin ()
 137     set_shortname( "XVMC" )
 138     add_string( "xvmc-display", NULL, NULL, DISPLAY_TEXT, DISPLAY_LONGTEXT, true )
 139     add_integer( "xvmc-adaptor", -1, NULL, ADAPTOR_TEXT, ADAPTOR_LONGTEXT, true )
 140     add_bool( "xvmc-altfullscreen", 0, NULL, ALT_FS_TEXT, ALT_FS_LONGTEXT, true )
 141     add_string( "xvmc-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT, true )
 142 #ifdef HAVE_SYS_SHM_H
 143     add_bool( "xvmc-shm", 1, NULL, SHM_TEXT, SHM_LONGTEXT, true )
 144 #endif
 145 #ifdef HAVE_XINERAMA
 146     add_integer ( "xvmc-xineramascreen", -1, NULL, SCREEN_TEXT, SCREEN_LONGTEXT, true )
 147 #endif
 148     add_string( "xvmc-deinterlace-mode", "bob", NULL, MODE_TEXT, MODE_LONGTEXT, false )
 149     add_string( "xvmc-crop-style", "eq", NULL, CROP_TEXT, CROP_LONGTEXT, false )
 150
 151     set_description( N_("XVMC extension video output") )
 152     set_capability( "video output", 10 )
 153     set_callbacks( Activate, Deactivate )
 154 vlc_module_end ()
 155
 156 /* following functions are local */
 157
 158 static const unsigned accel_priority[] = {
 159     VLC_XVMC_ACCEL_VLD,
 160 };
 161
 162 #define NUM_ACCEL_PRIORITY (sizeof(accel_priority)/sizeof(accel_priority[0]))
 163
 164 /*
 165  * Additional thread safety, since the plugin may decide to destroy a context
 166  * while it's surfaces are still active in the video-out loop.
 167  * When / If XvMC libs are reasonably thread-safe, the locks can be made
 168  * more efficient by allowing multiple threads in that do not destroy
 169  * the context or surfaces that may be active in other threads.
 170  */
 171
 172 static void init_context_lock( context_lock_t *c )
 173 {
 174     pthread_cond_init(&c->cond,NULL);
 175     pthread_mutex_init(&c->mutex,NULL);
 176     c->num_readers = 0;
 177 }
 178
 179 void free_context_lock( context_lock_t *c )
 180 {
 181     pthread_mutex_destroy(&c->mutex);
 182     pthread_cond_destroy(&c->cond);
 183 }
 184
 185 void xvmc_context_reader_lock( context_lock_t *c )
 186 {
 187     pthread_mutex_lock(&c->mutex);
 188     c->num_readers++;
 189     pthread_mutex_unlock(&c->mutex);
 190 }
 191
 192 void xvmc_context_reader_unlock( context_lock_t *c )
 193 {
 194     pthread_mutex_lock(&c->mutex);
 195     if (c->num_readers > 0) {
 196         if (--(c->num_readers) == 0) {
 197         pthread_cond_broadcast(&c->cond);
 198         }
 199     }
 200     pthread_mutex_unlock(&c->mutex);
 201 }
 202
 203 void xvmc_context_writer_lock( context_lock_t *c )
 204 {
 205     pthread_mutex_lock(&c->mutex);
 206     while(c->num_readers) {
 207         pthread_cond_wait( &c->cond, &c->mutex );
 208     }
 209 }
 210
 211 void xvmc_context_writer_unlock( context_lock_t *c )
 212 {
 213     pthread_mutex_unlock( &c->mutex );
 214 }
 215
 216 void clear_xx44_palette( xx44_palette_t *p )
 217 {
 218     int i;
 219     uint32_t *cluts = p->cluts;
 220     int *ids = p->lookup_cache;
 221
 222     i= p->size;
 223     while(i--)
 224         *cluts++ = 0;
 225     i = 2*OVL_PALETTE_SIZE;
 226     while(i--)
 227         *ids++ = -1;
 228     p->max_used=1;
 229 }
 230
 231 static void init_xx44_palette( xx44_palette_t *p, unsigned num_entries )
 232 {
 233     p->size = (num_entries > XX44_PALETTE_SIZE) ?
 234                     XX44_PALETTE_SIZE : num_entries;
 235 }
 236
 237 static void dispose_xx44_palette(xx44_palette_t *p)
 238 {
 239     /* Nothing to do */
 240 }
 241
 242 static void colorToPalette( const uint32_t *icolor, unsigned char *palette_p,
 243                             unsigned num_xvmc_components, char *xvmc_components )
 244 {
 245     const clut_t *color = (const clut_t *) icolor;
 246     unsigned int i;
 247
 248     for (i=0; i<num_xvmc_components; ++i)
 249     {
 250         switch(xvmc_components[i])
 251         {
 252             case 'V': *palette_p = color->cr; break;
 253             case 'U': *palette_p = color->cb; break;
 254             case 'Y':
 255             default:  *palette_p = color->y; break;
 256         }
 257         *palette_p++;
 258     }
 259 }
 260
 261
 262 void xx44_to_xvmc_palette( const xx44_palette_t *p,unsigned char *xvmc_palette,
 263                            unsigned first_xx44_entry, unsigned num_xx44_entries,
 264                            unsigned num_xvmc_components, char *xvmc_components )
 265 {
 266     unsigned int i;
 267     const uint32_t *cluts = p->cluts + first_xx44_entry;
 268
 269     for( i=0; i<num_xx44_entries; ++i )
 270     {
 271         if( (cluts - p->cluts) < p->size )
 272         {
 273             colorToPalette( cluts++, xvmc_palette,
 274                             num_xvmc_components, xvmc_components );
 275             xvmc_palette += num_xvmc_components;
 276         }
 277     }
 278 }
 279
 280 static int xx44_paletteIndex( xx44_palette_t *p, int color, uint32_t clut )
 281 {
 282     unsigned int i;
 283     uint32_t *cluts = p->cluts;
 284     int tmp;
 285
 286     if( (tmp = p->lookup_cache[color]) >= 0 )
 287     {
 288         if (cluts[tmp] == clut)
 289             return tmp;
 290     }
 291     for (i=0; i<p->max_used; ++i)
 292     {
 293         if (*cluts++ == clut) {
 294             p->lookup_cache[color] = i;
 295             return p->lookup_cache[color];
 296         }
 297     }
 298
 299     if( p->max_used == (p->size -1) )
 300     {
 301         //printf("video_out: Warning! Out of xx44 palette colors!\n");
 302         return 1;
 303     }
 304     p->cluts[p->max_used] = clut;
 305     p->lookup_cache[color] = p->max_used++;
 306     return p->lookup_cache[color];
 307 }
 308
 309 static void memblend_xx44( uint8_t *mem, uint8_t val,
 310                            size_t size, uint8_t mask )
 311 {
 312     uint8_t masked_val = val & mask;
 313
 314 /* size_t is unsigned, therefore always positive
 315    if (size < 0)
 316         return;*/
 317
 318     while(size--)
 319     {
 320         if( (*mem & mask) <= masked_val )
 321             *mem = val;
 322         mem++;
 323     }
 324 }
 325
 326 void blend_xx44( uint8_t *dst_img, subpicture_t *sub_img,
 327                  int dst_width, int dst_height, int dst_pitch,
 328                  xx44_palette_t *palette, int ia44 )
 329 {
 330     int src_width;
 331     int src_height;
 332     int mask;
 333     int x_off;
 334     int y_off;
 335     int x, y;
 336     uint8_t norm_pixel,clip_pixel;
 337     uint8_t *dst_y;
 338     uint8_t *dst;
 339     uint8_t alphamask;
 340     int clip_right;
 341     int i_len, i_color;
 342     uint16_t *p_source = NULL;
 343 #if 0
 344     if (!sub_img)
 345         return;
 346
 347     src_width  = sub_img->i_width;
 348     src_height = sub_img->i_height;
 349     x_off = sub_img->i_x;
 350     y_off = sub_img->i_y;
 351     alphamask = (ia44) ? 0x0F : 0xF0;
 352     p_source = (uint16_t *)sub_img->p_sys->p_data;
 353
 354     dst_y = dst_img + dst_pitch*y_off + x_off;
 355
 356     if( (x_off + sub_img->i_width) <= dst_width )
 357         clip_right = sub_img->i_width;
 358     else
 359         clip_right = dst_width - x_off;
 360
 361     if ((src_height + y_off) > dst_height)
 362         src_height = dst_height - y_off;
 363
 364     for (y = 0; y < src_height; y++)
 365     {
 366         mask = !( (y < sub_img->p_sys->i_y_start) ||
 367                   (y >= sub_img->p_sys->i_y_end) );
 368         dst = dst_y;
 369
 370         for (x = 0; x < src_width;)
 371         {
 372             i_color = *p_source & 0x3;
 373             i_len = *p_source++ >> 2;
 374
 375             if( (i_len > 0) && ((x+i_len) <= src_width) )
 376             {
 377                 /* Get the RLE part, then draw the line */
 378                 uint32_t color = (sub_img->p_sys->pi_yuv[i_color][0] << 16) |
 379                                  (sub_img->p_sys->pi_yuv[i_color][1] << 0) |
 380                                  (sub_img->p_sys->pi_yuv[i_color][2] << 8);
 381
 382                 norm_pixel = (uint8_t)(
 383                             (xx44_paletteIndex( palette,i_color, color ) << 4) |
 384                             (sub_img->p_sys->pi_alpha[i_color] & 0x0F) );
 385                 clip_pixel = (uint8_t)(
 386                             (xx44_paletteIndex( palette,i_color + OVL_PALETTE_SIZE,
 387                                                 sub_img->p_sys->pi_yuv[i_color][0] ) << 4) |
 388                             (sub_img->p_sys->pi_alpha[i_color] & 0x0F));
 389
 390                 if( !ia44 )
 391                 {
 392                     norm_pixel = ((norm_pixel & 0x0F) << 4) | ((norm_pixel & 0xF0) >> 4);
 393                     clip_pixel = ((clip_pixel & 0x0F) << 4) | ((clip_pixel & 0xF0) >> 4);
 394                 }
 395                 if( mask )
 396                 {
 397                     if( x < sub_img->p_sys->i_x_start )
 398                     {
 399                         if( (x + i_len) <= sub_img->p_sys->i_x_start )
 400                         {
 401                             memblend_xx44( dst, norm_pixel, i_len, alphamask );
 402                             dst += i_len;
 403                         }
 404                         else
 405                         {
 406                             memblend_xx44( dst, norm_pixel,
 407                                            sub_img->p_sys->i_x_start - x,
 408                                            alphamask );
 409                             dst += sub_img->p_sys->i_x_start - x;
 410                             i_len -= sub_img->p_sys->i_x_start - x;
 411                             if( i_len <= (sub_img->p_sys->i_x_end -
 412                                           sub_img->p_sys->i_x_start) )
 413                             {
 414                                 memblend_xx44( dst, clip_pixel,
 415                                                i_len, alphamask);
 416                                 dst += i_len;
 417                             }
 418                             else
 419                             {
 420                                 memblend_xx44( dst, clip_pixel,
 421                                                sub_img->p_sys->i_x_end -
 422                                                     sub_img->p_sys->i_x_start,
 423                                                alphamask );
 424                                 dst += (sub_img->p_sys->i_x_end -
 425                                         sub_img->p_sys->i_x_start);
 426                                 i_len -= (sub_img->p_sys->i_x_end -
 427                                           sub_img->p_sys->i_x_start);
 428                                 memblend_xx44( dst, norm_pixel,
 429                                                i_len, alphamask );
 430                                 dst += i_len;
 431                             }
 432                         }
 433                     }
 434                     else if( x < sub_img->p_sys->i_x_end )
 435                     {
 436                         if( i_len <= (sub_img->p_sys->i_x_end - x) )
 437                         {
 438                             memblend_xx44( dst, clip_pixel, i_len, alphamask);
 439                             dst += i_len;
 440                         }
 441                         else
 442                         {
 443                             memblend_xx44( dst, clip_pixel,
 444                                            sub_img->p_sys->i_x_end - x,
 445                                            alphamask);
 446                             dst += (sub_img->p_sys->i_x_end - x);
 447                             i_len -= (sub_img->p_sys->i_x_end - x);
 448                             memblend_xx44( dst, norm_pixel, i_len, alphamask);
 449                             dst += i_len;
 450                         }
 451                     }
 452                     else
 453                     {
 454                         memblend_xx44( dst, norm_pixel, i_len, alphamask );
 455                         dst += i_len;
 456                     }
 457                 }
 458                 else
 459                 {
 460                     memblend_xx44( dst, norm_pixel, i_len, alphamask );
 461                     dst += i_len;
 462                 }
 463             }
 464             else
 465             {
 466                 return;
 467             }
 468             x += i_len;
 469         }
 470         dst_y += dst_pitch;
 471     }
 472 #endif
 473 }
 474
 475 int xxmc_xvmc_surface_valid( vout_thread_t *p_vout, XvMCSurface *surf )
 476 {
 477     xvmc_surface_handler_t *handler = &p_vout->p_sys->xvmc_surf_handler;
 478     unsigned long index = surf - handler->surfaces;
 479     int ret;
 480
 481     if( index >= XVMC_MAX_SURFACES )
 482         return 0;
 483     pthread_mutex_lock(&handler->mutex);
 484     ret = handler->surfValid[index];
 485     pthread_mutex_unlock(&handler->mutex);
 486     return ret;
 487 }
 488
 489 static void xxmc_xvmc_dump_subpictures( vout_thread_t *p_vout )
 490 {
 491     int i;
 492     xvmc_surface_handler_t *handler = &p_vout->p_sys->xvmc_surf_handler;
 493
 494     for( i=0; i < XVMC_MAX_SUBPICTURES; ++i )
 495     {
 496         msg_Dbg( p_vout, "handler in use %d, valid %d",
 497                          handler->subInUse[i],
 498                          handler->subValid[i]);
 499     }
 500 }
 501
 502 XvMCSubpicture *xxmc_xvmc_alloc_subpicture( vout_thread_t *p_vout,
 503                     XvMCContext *context, unsigned short width,
 504                     unsigned short height, int xvimage_id )
 505 {
 506     int i;
 507     xvmc_surface_handler_t *handler = &p_vout->p_sys->xvmc_surf_handler;
 508     int status;
 509
 510     pthread_mutex_lock(&handler->mutex);
 511     /* xxmc_xvmc_dump_subpictures(p_vout); */
 512     for( i=0; i<XVMC_MAX_SUBPICTURES; ++i )
 513     {
 514         if( handler->subValid[i] && !handler->subInUse[i] )
 515         {
 516             XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
 517             if( XvMCGetSubpictureStatus( p_vout->p_sys->p_display,
 518                                          handler->subpictures + i,
 519                                          &status ) )
 520             {
 521                 XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 522                 continue;
 523             }
 524             XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 525             if( status & XVMC_DISPLAYING )
 526                 continue;
 527             handler->subInUse[i] = 1;
 528             /* xxmc_xvmc_dump_subpictures(p_vout); */
 529             pthread_mutex_unlock(&handler->mutex);
 530             return (handler->subpictures + i);
 531         }
 532     }
 533     for (i=0; i<XVMC_MAX_SUBPICTURES; ++i)
 534     {
 535         if( !handler->subInUse[i] )
 536         {
 537             XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
 538             if( Success != XvMCCreateSubpicture( p_vout->p_sys->p_display,
 539                                                  context,
 540                                                  handler->subpictures + i,
 541                                                  width, height, xvimage_id ) )
 542             {
 543                 XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 544                 pthread_mutex_unlock( &handler->mutex );
 545                 return NULL;
 546             }
 547             XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 548             msg_Dbg( p_vout, "video_out_xxmc: created subpicture %d", i );
 549             handler->subInUse[i] = 1;
 550             handler->subValid[i] = 1;
 551             pthread_mutex_unlock( &handler->mutex );
 552             return (handler->subpictures + i);
 553         }
 554     }
 555     pthread_mutex_unlock( &handler->mutex );
 556     return NULL;
 557 }
 558
 559 void xxmc_xvmc_free_subpicture( vout_thread_t *p_vout, XvMCSubpicture *sub )
 560 {
 561     xvmc_surface_handler_t *handler = &p_vout->p_sys->xvmc_surf_handler;
 562     unsigned int index = sub - handler->subpictures;
 563
 564     if( index >= XVMC_MAX_SUBPICTURES )
 565         return;
 566
 567     pthread_mutex_lock( &handler->mutex );
 568     handler->subInUse[index] = 0;
 569     /* xxmc_xvmc_dump_subpictures(p_vout); */
 570     pthread_mutex_unlock( &handler->mutex );
 571 }
 572
 573 static void xxmc_xvmc_surface_handler_construct( vout_thread_t *p_vout )
 574 {
 575     int i;
 576     xvmc_surface_handler_t *handler = &p_vout->p_sys->xvmc_surf_handler;
 577
 578     pthread_mutex_init( &handler->mutex, NULL );
 579     for( i=0; i<XVMC_MAX_SURFACES; ++i )
 580     {
 581         handler->surfInUse[i] = 0;
 582         handler->surfValid[i] = 0;
 583     }
 584     for( i=0; i<XVMC_MAX_SUBPICTURES; ++i )
 585     {
 586         handler->subInUse[i] = 0;
 587         handler->subValid[i] = 0;
 588     }
 589 }
 590
 591 static void xxmc_xvmc_dump_surfaces( vout_thread_t *p_vout )
 592 {
 593     int i;
 594     xvmc_surface_handler_t *handler = &p_vout->p_sys->xvmc_surf_handler;
 595
 596     for (i=0; i<XVMC_MAX_SURFACES; ++i)
 597     {
 598         msg_Dbg(p_vout, "surfaces in use %d, valid %d;",
 599                         handler->surfInUse[i],
 600                         handler->surfValid[i]);
 601     }
 602 }
 603
 604 void xxmc_xvmc_free_surface( vout_thread_t *p_vout, XvMCSurface *surf )
 605 {
 606     xvmc_surface_handler_t *handler = &p_vout->p_sys->xvmc_surf_handler;
 607     unsigned int index = 0;
 608
 609     index = (surf - handler->surfaces);
 610
 611     if (index < XVMC_MAX_SURFACES)
 612     {
 613         pthread_mutex_lock(&handler->mutex);
 614         msg_Dbg( p_vout,"free surface %d",index );
 615         handler->surfInUse[index]--;
 616         xxmc_xvmc_dump_surfaces(p_vout);
 617         pthread_mutex_unlock(&handler->mutex);
 618     }
 619 }
 620
 621 int checkXvMCCap( vout_thread_t *p_vout )
 622 {
 623     int i_xvport = 0;
 624     int numSurf = 0;
 625     int numSub = 0;
 626     int i,j;
 627     XvMCSurfaceInfo     *surfaceInfo =NULL;
 628     XvMCSurfaceInfo     *curInfo = NULL;
 629     XvMCContext         c;
 630     xvmc_capabilities_t *curCap = NULL;
 631     XvImageFormatValues *formatValues = NULL;
 632
 633     i_xvport = p_vout->p_sys->i_xvport;
 634     p_vout->p_sys->xvmc_cap = 0;
 635
 636     init_context_lock( &p_vout->p_sys->xvmc_lock );
 637     xvmc_context_writer_lock( &p_vout->p_sys->xvmc_lock );
 638
 639     p_vout->p_sys->old_subpic = NULL;
 640     p_vout->p_sys->new_subpic = NULL;
 641     p_vout->p_sys->contextActive = 0;
 642     p_vout->p_sys->subImage = NULL;
 643     p_vout->p_sys->hwSubpictures = 0;
 644     p_vout->p_sys->xvmc_palette = NULL;
 645
 646     XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
 647
 648     if( !XvMCQueryExtension( p_vout->p_sys->p_display,
 649                              &p_vout->p_sys->xvmc_eventbase,
 650                              &p_vout->p_sys->xvmc_errbase ) )
 651     {
 652         XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 653         xvmc_context_writer_unlock( &p_vout->p_sys->xvmc_lock );
 654         return VLC_EGENERIC;
 655     }
 656     msg_Dbg( p_vout,"XvMC extension found" );
 657
 658     surfaceInfo = XvMCListSurfaceTypes(p_vout->p_sys->p_display, i_xvport, &numSurf);
 659     if( !surfaceInfo )
 660     {
 661         XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 662         xvmc_context_writer_unlock( &p_vout->p_sys->xvmc_lock );
 663         return VLC_EGENERIC;
 664     }
 665
 666     p_vout->p_sys->xvmc_cap =
 667             (xvmc_capabilities_t *) malloc( numSurf *
 668                                             sizeof(xvmc_capabilities_t) );
 669     if( !p_vout->p_sys->xvmc_cap )
 670     {
 671         XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 672         xvmc_context_writer_unlock( &p_vout->p_sys->xvmc_lock );
 673         return VLC_EGENERIC;
 674     }
 675
 676     p_vout->p_sys->xvmc_num_cap = numSurf;
 677     curInfo = surfaceInfo;
 678     curCap = p_vout->p_sys->xvmc_cap;
 679
 680     msg_Dbg( p_vout,"found %d XvMC surface types", numSurf );
 681
 682     for( i=0; i< numSurf; ++i )
 683     {
 684         curCap->mpeg_flags = 0;
 685         curCap->accel_flags = 0;
 686         if( curInfo->chroma_format == XVMC_CHROMA_FORMAT_420 )
 687         {
 688             curCap->mpeg_flags |= ((curInfo->mc_type & XVMC_MPEG_1) ?
 689                                                 VLC_XVMC_MPEG_1 : 0);
 690             curCap->mpeg_flags |= ((curInfo->mc_type & XVMC_MPEG_2) ?
 691                                                 VLC_XVMC_MPEG_2 : 0);
 692             curCap->mpeg_flags |= ((curInfo->mc_type & XVMC_MPEG_4) ?
 693                                                 VLC_XVMC_MPEG_4 : 0);
 694             curCap->accel_flags |= ((curInfo->mc_type & XVMC_VLD) ?
 695                                               VLC_XVMC_ACCEL_VLD : 0);
 696             curCap->accel_flags |= ((curInfo->mc_type & XVMC_IDCT) ?
 697                                              VLC_XVMC_ACCEL_IDCT : 0);
 698             curCap->accel_flags |= ((curInfo->mc_type & (XVMC_VLD | XVMC_IDCT)) ?
 699                                             0 : VLC_XVMC_ACCEL_MOCOMP);
 700             curCap->max_width = curInfo->max_width;
 701             curCap->max_height = curInfo->max_height;
 702             curCap->sub_max_width = curInfo->subpicture_max_width;
 703             curCap->sub_max_height = curInfo->subpicture_max_height;
 704             curCap->flags = curInfo->flags;
 705
 706             msg_Dbg (p_vout, "surface type %d: Max size: %d %d.",
 707                             i, curCap->max_width, curCap->max_height);
 708             msg_Dbg (p_vout, "surface subtype %d: Max subpic size: %d %d.",
 709                             i, curCap->sub_max_width, curCap->sub_max_height);
 710
 711             curCap->type_id = curInfo->surface_type_id;
 712             formatValues = XvMCListSubpictureTypes( p_vout->p_sys->p_display,
 713                                                     i_xvport,
 714                                                     curCap->type_id,
 715                                                     &numSub );
 716             curCap->subPicType.id = 0;
 717             if( formatValues )
 718             {
 719                 msg_Dbg( p_vout, "surface type %d: found %d XvMC subpicture types",
 720                                 i, numSub);
 721                 for( j = 0; j<numSub; ++j )
 722                 {
 723                     if( formatValues[j].id == FOURCC_IA44 )
 724                     {
 725                         curCap->subPicType = formatValues[j];
 726                         msg_Dbg( p_vout,
 727                                     "surface type %d: detected and using "
 728                                     "IA44 subpicture type.", i );
 729                         /* Prefer IA44 */
 730                         break;
 731                     }
 732                     else if( formatValues[j].id == FOURCC_AI44 )
 733                     {
 734                         curCap->subPicType = formatValues[j];
 735                         msg_Dbg( p_vout,
 736                                  "surface type %d: detected AI44 "
 737                                  "subpicture type.", i );
 738                     }
 739                 }
 740             }
 741             XFree(formatValues);
 742             curInfo++;
 743             curCap++;
 744         }
 745     }
 746     XFree(surfaceInfo);
 747
 748     /*
 749      * Try to create a direct rendering context. This will fail if we are not
 750      * on the displaying computer or an indirect context is not available.
 751      */
 752     XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 753     curCap = p_vout->p_sys->xvmc_cap;
 754     if( Success == XvMCCreateContext( p_vout->p_sys->p_display, i_xvport,
 755                                       curCap->type_id,
 756                                       curCap->max_width,
 757                                       curCap->max_height,
 758                                       XVMC_DIRECT, &c ) )
 759     {
 760         msg_Dbg( p_vout, "using direct XVMC rendering context" );
 761         p_vout->p_sys->context_flags = XVMC_DIRECT;
 762     }
 763     else if( Success == XvMCCreateContext( p_vout->p_sys->p_display, i_xvport,
 764                                            curCap->type_id,
 765                                            curCap->max_width,
 766                                            curCap->max_height,
 767                                            0, &c ) )
 768     {
 769         msg_Dbg( p_vout, "using default XVMC rendering context" );
 770         p_vout->p_sys->context_flags = 0;
 771     }
 772     else
 773     {
 774         free( p_vout->p_sys->xvmc_cap );
 775         p_vout->p_sys->xvmc_cap = NULL;
 776         msg_Err( p_vout, "use of direct XvMC context on a remote display failed"
 777                          " falling back to XV." );
 778         xvmc_context_writer_unlock( &p_vout->p_sys->xvmc_lock );
 779         return VLC_SUCCESS;
 780     }
 781     XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
 782     XvMCDestroyContext( p_vout->p_sys->p_display, &c );
 783     xxmc_xvmc_surface_handler_construct( p_vout );
 784     /*  p_vout->p_sys->capabilities |= VO_CAP_XXMC; */
 785     XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 786     init_xx44_palette( &p_vout->p_sys->palette , 0 );
 787     p_vout->p_sys->last_accel_request = 0xFFFFFFFF;
 788     xvmc_context_writer_unlock( &p_vout->p_sys->xvmc_lock );
 789     return VLC_SUCCESS;
 790 }
 791
 792 static int xxmc_setup_subpictures( vout_thread_t *p_vout,
 793         unsigned int width, unsigned int height )
 794 {
 795     xvmc_capabilities_t *curCap = NULL;
 796     XvMCSubpicture *sp = NULL;
 797
 798     if( p_vout->p_sys->contextActive )
 799     {
 800         curCap = p_vout->p_sys->xvmc_cap + p_vout->p_sys->xvmc_cur_cap;
 801
 802         if( (width > curCap->sub_max_width) ||
 803             (height > curCap->sub_max_height) )
 804             return VLC_EGENERIC;
 805
 806         if( (p_vout->p_sys->xvmc_backend_subpic =
 807                 (curCap->flags & XVMC_BACKEND_SUBPICTURE)) )
 808             msg_Dbg( p_vout, "using backend subpictures." );
 809
 810         if (!p_vout->p_sys->subImage)
 811         {
 812             XLockDisplay( p_vout->p_sys->p_display );
 813             msg_Dbg(p_vout, "xxmc_setup_subpictures");
 814 #ifdef HAVE_SYS_SHM_H
 815             if( p_vout->p_sys->i_shm_opcode )
 816             {
 817                 /* Create image using XShm extension */
 818                 p_vout->p_sys->subImage = CreateShmImage( p_vout,
 819                                             p_vout->p_sys->p_display,
 820                                             p_vout->p_sys->i_xvport,
 821                                             curCap->subPicType.id,
 822                                             /* VLC2X11_FOURCC( p_vout->output. i_chroma ), */
 823                                             &p_vout->p_sys->subShmInfo,
 824                                             p_vout->output.i_width,
 825                                             p_vout->output.i_height );
 826             }
 827 #endif /* HAVE_SYS_SHM_H */
 828             XUnlockDisplay( p_vout->p_sys->p_display );
 829             if( !p_vout->p_sys->subImage )
 830             {
 831                 msg_Dbg(p_vout, "failed allocating XvImage for supbictures" );
 832                 return VLC_EGENERIC;
 833             }
 834         }
 835
 836         sp = xxmc_xvmc_alloc_subpicture( p_vout, &p_vout->p_sys->context,
 837                                          width, height,
 838                                          curCap->subPicType.id );
 839         if( sp )
 840         {
 841             init_xx44_palette( &p_vout->p_sys->palette, sp->num_palette_entries );
 842             p_vout->p_sys->xvmc_palette = (char *) malloc( sp->num_palette_entries
 843                     * sp->entry_bytes );
 844             xxmc_xvmc_free_subpicture( p_vout, sp);
 845             if( !p_vout->p_sys->xvmc_palette )
 846                 return VLC_EGENERIC;
 847             p_vout->p_sys->hwSubpictures = 1;
 848         }
 849     }
 850     return VLC_SUCCESS;
 851 }
 852
 853 static void xvmc_check_colorkey_properties( vout_thread_t *p_vout )
 854 {
 855     int num,i;
 856     XvAttribute *xvmc_attributes = NULL;
 857     Atom ap;
 858
 859     /*
 860     * Determine if the context is of "Overlay" type. If so,
 861     * check whether we can autopaint.
 862     */
 863     p_vout->p_sys->have_xvmc_autopaint = 0;
 864     if( p_vout->p_sys->context_flags & XVMC_OVERLAID_SURFACE )
 865     {
 866         msg_Dbg( p_vout, "check colorkey properties" );
 867         XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
 868         xvmc_attributes = XvMCQueryAttributes( p_vout->p_sys->p_display,
 869                                                &p_vout->p_sys->context,
 870                                                &num );
 871         if( xvmc_attributes )
 872         {
 873             for( i = 0; i < num; ++i )
 874             {
 875                 if( strncmp( "XV_AUTOPAINT_COLORKEY",
 876                              xvmc_attributes[i].name,
 877                              21) == 0)
 878                 {
 879                     ap = XInternAtom( p_vout->p_sys->p_display,
 880                                       "XV_AUTOPAINT_COLORKEY",
 881                                        False );
 882                     XvMCSetAttribute( p_vout->p_sys->p_display,
 883                                       &p_vout->p_sys->context,
 884                                       ap,
 885                                       1 ); /* p_vout->p_sys->props[VO_PROP_AUTOPAINT_COLORKEY].value */
 886                     p_vout->p_sys->have_xvmc_autopaint = 1;
 887                     msg_Dbg( p_vout, "has xvmc autopaint" );
 888                 }
 889             }
 890         }
 891         XFree( xvmc_attributes );
 892         XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 893         /* p_vout->p_sys->xvmc_xoverlay_type = X11OSD_COLORKEY; */
 894     }
 895 #if 0
 896     else
 897     {
 898         p_vout->p_sys->xvmc_xoverlay_type = X11OSD_SHAPED;
 899     }
 900 #endif
 901 }
 902
 903 static void xxmc_xvmc_destroy_surfaces( vout_thread_t *p_vout )
 904 {
 905     int i;
 906     xvmc_surface_handler_t *handler = NULL;
 907
 908     handler = &p_vout->p_sys->xvmc_surf_handler;
 909
 910     pthread_mutex_lock( &handler->mutex );
 911     for( i = 0; i < XVMC_MAX_SURFACES; ++i )
 912     {
 913         XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
 914         if( handler->surfValid[i] )
 915         {
 916             XvMCFlushSurface( p_vout->p_sys->p_display , handler->surfaces+i);
 917             XvMCSyncSurface( p_vout->p_sys->p_display, handler->surfaces+i );
 918             XvMCHideSurface( p_vout->p_sys->p_display, handler->surfaces+i );
 919             XvMCDestroySurface( p_vout->p_sys->p_display, handler->surfaces+i );
 920         }
 921         XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 922         handler->surfValid[i] = 0;
 923     }
 924     pthread_mutex_unlock( &handler->mutex );
 925 }
 926
 927 static void xxmc_xvmc_destroy_subpictures( vout_thread_t *p_vout )
 928 {
 929     int i;
 930     xvmc_surface_handler_t *handler = NULL;
 931
 932     handler = &p_vout->p_sys->xvmc_surf_handler;
 933
 934     pthread_mutex_lock( &handler->mutex );
 935     for( i = 0; i < XVMC_MAX_SUBPICTURES; ++i )
 936     {
 937         XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
 938         if( handler->subValid[i] )
 939         {
 940             XvMCFlushSubpicture( p_vout->p_sys->p_display , handler->subpictures+i);
 941             XvMCSyncSubpicture( p_vout->p_sys->p_display, handler->subpictures+i );
 942             XvMCDestroySubpicture( p_vout->p_sys->p_display, handler->subpictures+i );
 943         }
 944         XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 945         handler->subValid[i] = 0;
 946     }
 947     pthread_mutex_unlock( &handler->mutex );
 948 }
 949
 950 static XvMCSurface *xxmc_xvmc_alloc_surface( vout_thread_t *p_vout,
 951         XvMCContext *context )
 952 {
 953     xvmc_surface_handler_t *handler = NULL;
 954     int i;
 955
 956     handler = &p_vout->p_sys->xvmc_surf_handler;
 957
 958     pthread_mutex_lock( &handler->mutex );
 959     xxmc_xvmc_dump_surfaces( p_vout );
 960     for( i = 0; i < XVMC_MAX_SURFACES; ++i )
 961     {
 962         if( handler->surfValid[i] && !handler->surfInUse[i] )
 963         {
 964             handler->surfInUse[i] = 1;
 965             msg_Dbg( p_vout, "reusing surface %d", i );
 966             xxmc_xvmc_dump_surfaces( p_vout );
 967             pthread_mutex_unlock( &handler->mutex );
 968             return (handler->surfaces + i);
 969         }
 970     }
 971     for( i = 0; i < XVMC_MAX_SURFACES; ++i )
 972     {
 973         if( !handler->surfInUse[i] )
 974         {
 975             XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
 976             if( Success != XvMCCreateSurface( p_vout->p_sys->p_display,
 977                                               context,
 978                                               handler->surfaces + i) )
 979             {
 980                 XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 981                 pthread_mutex_unlock( &handler->mutex );
 982                 return NULL;
 983             }
 984             XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
 985
 986             msg_Dbg( p_vout, "created surface %d", i );
 987             handler->surfInUse[i] = 1;
 988             handler->surfValid[i] = 1;
 989             pthread_mutex_unlock( &handler->mutex );
 990             return (handler->surfaces + i);
 991         }
 992     }
 993     pthread_mutex_unlock( &handler->mutex );
 994     return NULL;
 995 }
 996
 997 void xxmc_dispose_context( vout_thread_t *p_vout )
 998 {
 999     if( p_vout->p_sys->contextActive )
1000     {
1001         if( p_vout->p_sys->xvmc_accel &
1002             (VLC_XVMC_ACCEL_MOCOMP | VLC_XVMC_ACCEL_IDCT) )
1003         {
1004             xvmc_macroblocks_t *macroblocks = NULL;
1005
1006             macroblocks = &p_vout->p_sys->macroblocks;
1007             XvMCDestroyMacroBlocks( p_vout->p_sys->p_display,
1008                                     &macroblocks->macro_blocks );
1009             XvMCDestroyBlocks( p_vout->p_sys->p_display,
1010                                &macroblocks->blocks );
1011         }
1012
1013         msg_Dbg( p_vout, "freeing up XvMC surfaces and subpictures" );
1014         free( p_vout->p_sys->xvmc_palette );
1015         dispose_xx44_palette( &p_vout->p_sys->palette );
1016         xxmc_xvmc_destroy_subpictures( p_vout );
1017         xxmc_xvmc_destroy_surfaces( p_vout );
1018
1019         msg_Dbg(p_vout, "freeing up XvMC Context.");
1020         XLockDisplay( p_vout->p_sys->p_display );
1021         if( p_vout->p_sys->subImage )
1022         {
1023             XFree( p_vout->p_sys->subImage );
1024             p_vout->p_sys->subImage = NULL;
1025         }
1026         p_vout->p_sys->subImage = NULL;
1027         XUnlockDisplay( p_vout->p_sys->p_display );
1028         XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
1029         XvMCDestroyContext( p_vout->p_sys->p_display,
1030                             &p_vout->p_sys->context );
1031         XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
1032         p_vout->p_sys->contextActive = 0;
1033         p_vout->p_sys->hwSubpictures = 0;
1034         p_vout->p_sys->xvmc_accel = 0;
1035     }
1036 }
1037
1038 static int xxmc_find_context( vout_thread_t *p_vout, vlc_xxmc_t *xxmc,
1039         unsigned int width, unsigned int height )
1040 {
1041     unsigned int i, k;
1042     bool found = false;
1043     xvmc_capabilities_t *curCap = NULL;
1044     unsigned int request_mpeg_flags, request_accel_flags;
1045
1046     request_mpeg_flags = xxmc->mpeg;
1047     for( k = 0; k < NUM_ACCEL_PRIORITY; ++k )
1048     {
1049         request_accel_flags = xxmc->acceleration & accel_priority[k];
1050         if( !request_accel_flags )
1051             continue;
1052
1053         curCap = p_vout->p_sys->xvmc_cap;
1054         for( i =0; i < p_vout->p_sys->xvmc_num_cap; ++i )
1055         {
1056             msg_Dbg( p_vout, "surface type %d, capabilities 0x%8x 0x%8x",
1057                              i,
1058                              curCap->mpeg_flags,
1059                              curCap->accel_flags );
1060             msg_Dbg( p_vout, "fequests: 0x%8x 0x%8x",
1061                              request_mpeg_flags,
1062                              request_accel_flags );
1063             if( ( (curCap->mpeg_flags & request_mpeg_flags) == request_mpeg_flags) &&
1064                   (curCap->accel_flags & request_accel_flags) &&
1065                   (width <= curCap->max_width) &&
1066                   (height <= curCap->max_height) )
1067             {
1068                 found = true;
1069                 break;
1070             }
1071             curCap++;
1072         }
1073         if( found )
1074         {
1075             p_vout->p_sys->xvmc_cur_cap = i;
1076             break;
1077         }
1078     }
1079     if( found )
1080     {
1081         p_vout->p_sys->xvmc_accel = request_accel_flags;
1082         p_vout->p_sys->unsigned_intra = (curCap->flags & XVMC_INTRA_UNSIGNED);
1083         return 1;
1084     }
1085     p_vout->p_sys->xvmc_accel = 0;
1086     return 0;
1087 }
1088
1089 static int xxmc_create_context( vout_thread_t *p_vout,
1090         unsigned int width, unsigned int height )
1091 {
1092     xvmc_capabilities_t *curCap = NULL;
1093
1094     curCap = p_vout->p_sys->xvmc_cap + p_vout->p_sys->xvmc_cur_cap;
1095
1096     msg_Dbg( p_vout, "creating new XvMC context %d", curCap->type_id );
1097
1098     XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
1099     if( Success == XvMCCreateContext( p_vout->p_sys->p_display,
1100                                       p_vout->p_sys->i_xvport,
1101                                       curCap->type_id,
1102                                       width,
1103                                       height,
1104                                       p_vout->p_sys->context_flags,
1105                                       &p_vout->p_sys->context ) )
1106     {
1107         p_vout->p_sys->xvmc_mpeg = curCap->mpeg_flags;
1108         p_vout->p_sys->xvmc_width = width;
1109         p_vout->p_sys->xvmc_height = height;
1110         p_vout->p_sys->contextActive = 1;
1111     }
1112     XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
1113     return p_vout->p_sys->contextActive;
1114 }
1115
1116 static void xvmc_flushsync(picture_t *picture)
1117 {
1118     vout_thread_t *p_vout = picture->p_sys->p_vout;
1119
1120     xvmc_context_reader_lock( &p_vout->p_sys->xvmc_lock );
1121
1122     if( !xxmc_xvmc_surface_valid( p_vout, picture->p_sys->xvmc_surf ) )
1123     {
1124         msg_Dbg(p_vout, "xvmc_flushsync 1 : %d", picture->p_sys->xxmc_data.result );
1125         picture->p_sys->xxmc_data.result = 128;
1126         xvmc_context_reader_unlock( &p_vout->p_sys->xvmc_lock );
1127         return;
1128     }
1129
1130     XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
1131     picture->p_sys->xxmc_data.result =
1132             XvMCFlushSurface( p_vout->p_sys->p_display,
1133                               picture->p_sys->xvmc_surf );
1134     XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
1135     xvmc_context_reader_unlock( &p_vout->p_sys->xvmc_lock );
1136 }
1137
1138 static void xvmc_flush(picture_t *picture)
1139 {
1140     vout_thread_t *p_vout = picture->p_sys->p_vout;
1141
1142     xvmc_context_reader_lock( &p_vout->p_sys->xvmc_lock );
1143
1144     if ( !xxmc_xvmc_surface_valid( p_vout, picture->p_sys->xvmc_surf ) )
1145     {
1146         msg_Dbg(p_vout, "xvmc flush 1 : %d", picture->p_sys->xxmc_data.result );
1147         picture->p_sys->xxmc_data.result = 128;
1148         xvmc_context_reader_unlock( &p_vout->p_sys->xvmc_lock );
1149         return;
1150     }
1151
1152     XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
1153     picture->p_sys->xxmc_data.result =
1154             XvMCFlushSurface( p_vout->p_sys->p_display,
1155                               picture->p_sys->xvmc_surf );
1156     XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
1157     xvmc_context_reader_unlock( &p_vout->p_sys->xvmc_lock );
1158 }
1159
1160 static int xxmc_frame_updates( vout_thread_t *p_vout, picture_t *picture )
1161 {
1162     vlc_xxmc_t *xxmc = &picture->p_sys->xxmc_data;
1163
1164     /*
1165      * If we have changed context since the surface was updated, xvmc_surf
1166      * is either NULL or invalid. If it is invalid. Set it to NULL.
1167      * Also if there are other users of this surface, deregister our use of
1168      * it and later try to allocate a new, fresh one.
1169      */
1170
1171     if( picture->p_sys->xvmc_surf )
1172     {
1173         if( !xxmc_xvmc_surface_valid( p_vout, picture->p_sys->xvmc_surf ) )
1174         {
1175             xxmc_xvmc_free_surface( p_vout , picture->p_sys->xvmc_surf );
1176             picture->p_sys->xvmc_surf = NULL;
1177         }
1178     }
1179 #if 0
1180     if( picture->p_sys->p_image )
1181     {
1182         memset( picture->p_sys->p_image->data, 0,
1183                 picture->p_sys->p_image->width
1184                     * picture->p_sys->p_image->height );
1185     }
1186 #endif
1187     /*
1188      * If it is NULL create a new surface.
1189      */
1190     if( !picture->p_sys->xvmc_surf )
1191     {
1192         picture->p_sys->xvmc_surf = xxmc_xvmc_alloc_surface( p_vout,
1193                                                     &p_vout->p_sys->context );
1194         if( !picture->p_sys->xvmc_surf )
1195         {
1196             msg_Err( p_vout, "accelerated surface allocation failed.\n"
1197                             " You are probably out of framebuffer memory.\n"
1198                             " Falling back to software decoding." );
1199             p_vout->p_sys->xvmc_accel = 0;
1200             xxmc_dispose_context( p_vout );
1201             return VLC_EGENERIC;
1202         }
1203     }
1204     xxmc->acceleration = p_vout->p_sys->xvmc_accel;
1205
1206     xxmc->proc_xxmc_flush = xvmc_flush;
1207     xxmc->proc_xxmc_flushsync = xvmc_flushsync;
1208     xxmc->xvmc.proc_macro_block = NULL;
1209 #if 0
1210     frame->vo_frame.proc_duplicate_frame_data = xxmc_duplicate_frame_data;
1211 #endif
1212     xxmc->proc_xxmc_begin = xvmc_vld_frame;
1213     xxmc->proc_xxmc_slice = xvmc_vld_slice;
1214     return VLC_SUCCESS;
1215 }
1216
1217 static int xxmc_xvmc_update_context( vout_thread_t *p_vout,
1218     picture_t *picture, uint32_t width, uint32_t height )
1219 {
1220     vlc_xxmc_t *xxmc = &picture->p_sys->xxmc_data;
1221
1222     /*
1223      * Are we at all capable of doing XvMC ?
1224      */
1225     if( p_vout->p_sys->xvmc_cap == 0 )
1226         return VLC_EGENERIC;
1227
1228     msg_Dbg( p_vout, "new format: need to change XvMC context. "
1229                      "width: %d height: %d mpeg: %d acceleration: %d",
1230                      width, height,
1231                      xxmc->mpeg, xxmc->acceleration );
1232
1233     if( picture->p_sys->xvmc_surf )
1234         xxmc_xvmc_free_surface( p_vout , picture->p_sys->xvmc_surf );
1235     picture->p_sys->xvmc_surf = NULL;
1236
1237     xxmc_dispose_context( p_vout );
1238
1239     if( xxmc_find_context( p_vout, xxmc, width, height ) )
1240     {
1241         xxmc_create_context( p_vout, width, height);
1242         xvmc_check_colorkey_properties( p_vout );
1243         xxmc_setup_subpictures(p_vout, width, height);
1244     }
1245
1246     if( !p_vout->p_sys->contextActive )
1247     {
1248         msg_Dbg( p_vout, "using software decoding for this stream" );
1249         p_vout->p_sys->xvmc_accel = 0;
1250     }
1251     else
1252     {
1253         msg_Dbg(p_vout, "using hardware decoding for this stream." );
1254     }
1255
1256     p_vout->p_sys->xvmc_mpeg = xxmc->mpeg;
1257     p_vout->p_sys->xvmc_width = width;
1258     p_vout->p_sys->xvmc_height = height;
1259     return p_vout->p_sys->contextActive;
1260 }
1261
1262
1263 void xxmc_do_update_frame( picture_t *picture, uint32_t width, uint32_t height,
1264         double ratio, int format, int flags)
1265 {
1266     vout_thread_t *p_vout = picture->p_sys->p_vout;
1267     int indextime = 0;
1268     int status = 0;
1269
1270     picture->p_sys->xxmc_data.decoded = 0;
1271     picture->p_sys->nb_display = 0;
1272     picture->b_force = 0;
1273     vlc_xxmc_t *xxmc = &picture->p_sys->xxmc_data;
1274
1275     xvmc_context_writer_lock( &p_vout->p_sys->xvmc_lock);
1276     if( (p_vout->p_sys->last_accel_request != xxmc->acceleration) ||
1277         (p_vout->p_sys->xvmc_mpeg != xxmc->mpeg) ||
1278         (p_vout->p_sys->xvmc_width != width) ||
1279         (p_vout->p_sys->xvmc_height != height))
1280     {
1281         p_vout->p_sys->last_accel_request = xxmc->acceleration;
1282         xxmc_xvmc_update_context( p_vout, picture, width, height );
1283     }
1284
1285     if( p_vout->p_sys->contextActive )
1286         xxmc_frame_updates( p_vout, picture );
1287
1288     if( !p_vout->p_sys->contextActive )
1289     {
1290         xxmc->acceleration = 0;
1291         xxmc->xvmc.macroblocks = 0;
1292     }
1293     else
1294     {
1295         picture->format.i_chroma = format;
1296     }
1297     xvmc_context_writer_unlock( &p_vout->p_sys->xvmc_lock);
1298
1299     XvMCGetSurfaceStatus( p_vout->p_sys->p_display,
1300                           picture->p_sys->xvmc_surf,
1301                           &status );
1302     /* Wait a little till frame is being displayed */
1303     while( status & XVMC_DISPLAYING )
1304     {
1305         /* msleep(1); */
1306
1307         XvMCGetSurfaceStatus( p_vout->p_sys->p_display,
1308                               picture->p_sys->xvmc_surf,
1309                               &status );
1310
1311         indextime++;
1312         if( indextime > 4 )
1313             break;
1314     }
1315 }
1316
1317 #if 0
1318 /* called xlocked */
1319 static void dispose_ximage( vout_thread_t *p_vout, XShmSegmentInfo *shminfo,
1320                 XvImage *myimage )
1321 {
1322 # ifdef HAVE_SYS_SHM_H
1323     if( p_vout->p_sys->i_shm_opcode )
1324     {
1325         XShmDetach( p_vout->p_sys->p_display, shminfo );
1326         XFree( myimage );
1327         shmdt( shminfo->shmaddr );
1328         if( shminfo->shmid >= 0 )
1329         {
1330             shmctl( shminfo->shmid, IPC_RMID, 0 );
1331             shminfo->shmid = -1;
1332         }
1333     }
1334     else
1335 #endif
1336     {
1337         if( myimage->data )
1338             free(myimage->data);
1339         XFree (myimage);
1340     }
1341 }
1342 #endif
1343
1344 void xvmc_vld_frame( picture_t *picture )
1345 {
1346     picture_sys_t *p_sys  = picture->p_sys;
1347     vout_thread_t *p_vout = p_sys->p_vout;
1348     vlc_vld_frame_t *vft  = &(p_sys->xxmc_data.vld_frame);
1349     picture_t *ff         = (picture_t *) vft->forward_reference_picture;
1350     picture_t *bf         = (picture_t *) vft->backward_reference_picture;
1351     XvMCMpegControl ctl;
1352     XvMCSurface *fs=0, *bs=0;
1353     XvMCQMatrix qmx;
1354
1355     ctl.BHMV_range = vft->mv_ranges[0][0];
1356     ctl.BVMV_range = vft->mv_ranges[0][1];
1357     ctl.FHMV_range = vft->mv_ranges[1][0];
1358     ctl.FVMV_range = vft->mv_ranges[1][1];
1359     ctl.picture_structure = vft->picture_structure;
1360     ctl.intra_dc_precision = vft->intra_dc_precision;
1361     ctl.picture_coding_type = vft->picture_coding_type;
1362     ctl.mpeg_coding = (vft->mpeg_coding == 0) ? XVMC_MPEG_1 : XVMC_MPEG_2;
1363     ctl.flags = 0;
1364     ctl.flags |= (vft->progressive_sequence) ? XVMC_PROGRESSIVE_SEQUENCE : 0;
1365     ctl.flags |= (vft->scan) ? XVMC_ALTERNATE_SCAN : XVMC_ZIG_ZAG_SCAN;
1366     ctl.flags |= (vft->pred_dct_frame) ?
1367                     XVMC_PRED_DCT_FRAME : XVMC_PRED_DCT_FIELD;
1368     ctl.flags |= (picture->b_top_field_first) ?
1369                     XVMC_TOP_FIELD_FIRST : XVMC_BOTTOM_FIELD_FIRST;
1370     ctl.flags |= (vft->concealment_motion_vectors) ?
1371                     XVMC_CONCEALMENT_MOTION_VECTORS : 0;
1372     ctl.flags |= (vft->q_scale_type) ? XVMC_Q_SCALE_TYPE : 0;
1373     ctl.flags |= (vft->intra_vlc_format) ? XVMC_INTRA_VLC_FORMAT : 0;
1374     ctl.flags |= (vft->second_field) ? XVMC_SECOND_FIELD : 0;
1375
1376     if( ff )
1377         fs = ff->p_sys->xvmc_surf;
1378     if( bf )
1379         bs = bf->p_sys->xvmc_surf;
1380
1381     /*
1382      * Below is for interlaced streams and second_field.
1383      */
1384     if( ctl.picture_coding_type == P_TYPE ) /* XVMC_P_PICTURE) */
1385         bs = picture->p_sys->xvmc_surf;
1386
1387     if( (qmx.load_intra_quantiser_matrix = vft->load_intra_quantizer_matrix) )
1388     {
1389         memcpy( qmx.intra_quantiser_matrix, vft->intra_quantizer_matrix,
1390                 sizeof(qmx.intra_quantiser_matrix) );
1391     }
1392     if( (qmx.load_non_intra_quantiser_matrix =
1393                 vft->load_non_intra_quantizer_matrix) )
1394     {
1395         memcpy( qmx.non_intra_quantiser_matrix, vft->non_intra_quantizer_matrix,
1396                sizeof(qmx.non_intra_quantiser_matrix) );
1397     }
1398     qmx.load_chroma_intra_quantiser_matrix = 0;
1399     qmx.load_chroma_non_intra_quantiser_matrix = 0;
1400     xvmc_context_reader_lock( &p_vout->p_sys->xvmc_lock );
1401
1402     if( !xxmc_xvmc_surface_valid( p_vout, picture->p_sys->xvmc_surf ) )
1403     {
1404         picture->p_sys->xxmc_data.result = 128;
1405         xvmc_context_reader_unlock( &p_vout->p_sys->xvmc_lock );
1406         return;
1407     }
1408
1409     XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
1410     XvMCLoadQMatrix( p_vout->p_sys->p_display, &p_vout->p_sys->context, &qmx );
1411     do {
1412         picture->p_sys->xxmc_data.result =
1413                 XvMCBeginSurface( p_vout->p_sys->p_display,
1414                                   &p_vout->p_sys->context,
1415                                   picture->p_sys->xvmc_surf,
1416                                   fs, bs, &ctl );
1417     } while( !picture->p_sys->xxmc_data.result );
1418     XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
1419     xvmc_context_reader_unlock( &p_vout->p_sys->xvmc_lock );
1420 }
1421
1422 void xvmc_vld_slice( picture_t *picture )
1423 {
1424     picture_sys_t *p_sys  = picture->p_sys;
1425     vout_thread_t *p_vout = p_sys->p_vout;
1426
1427     xvmc_context_reader_lock( &p_vout->p_sys->xvmc_lock );
1428     if( !xxmc_xvmc_surface_valid( p_vout, picture->p_sys->xvmc_surf ) )
1429     {
1430         picture->p_sys->xxmc_data.result = 128;
1431         xvmc_context_reader_unlock( &p_vout->p_sys->xvmc_lock );
1432         msg_Err(p_vout, "vld slice error" );
1433         return;
1434     }
1435
1436     XVMCLOCKDISPLAY( p_vout->p_sys->p_display );
1437     picture->p_sys->xxmc_data.result =
1438             XvMCPutSlice2( p_vout->p_sys->p_display,
1439                            &p_vout->p_sys->context,
1440                             (char *)picture->p_sys->xxmc_data.slice_data,
1441                             picture->p_sys->xxmc_data.slice_data_size,
1442                             picture->p_sys->xxmc_data.slice_code );
1443
1444     if( picture->p_sys->xxmc_data.result != 0 )
1445         msg_Err( p_vout, "vlc slice error %d",
1446                  picture->p_sys->xxmc_data.result );
1447     /*
1448      * If CPU-saving mode is enabled, sleep after every xxmc->sleep slice. This will free
1449      * up the cpu while the decoder is working on the slice. The value of xxmc->sleep is calculated
1450      * so that the decoder thread sleeps at most 50% of the frame delay,
1451      * assuming a 2.6 kernel clock of 1000 Hz.
1452      */
1453     XVMCUNLOCKDISPLAY( p_vout->p_sys->p_display );
1454     xvmc_context_reader_unlock( &p_vout->p_sys->xvmc_lock );
1455 #if 0
1456     if( p_vout->p_sys->cpu_save_enabled )
1457     {
1458         p_vout->p_sys->cpu_saver += 1.;
1459         if( p_vout->p_sys->cpu_saver >= picture->p_sys->xxmc_data.sleep )
1460         {
1461             usleep(1);
1462             p_vout->p_sys->cpu_saver -= picture->p_sys->xxmc_data.sleep;
1463         }
1464     }
1465 #endif
1466 }