libvo/vo_vesa.c

   1 /*
   2  * copyright (C) 2001 Nick Kurshev <nickols_k@mail.ru>
   3  * This file is partly based on vbetest.c from lrmi distributive.
   4  *
   5  * This file is part of MPlayer.
   6  *
   7  * MPlayer is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * MPlayer is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 /*
  23   TODO:
  24   - hw YUV support (need volunteers who have corresponding hardware)
  25   - triple buffering (if it will really speedup playback).
  26     note: triple buffering requires VBE 3.0 - need volunteers.
  27 */
  28 #include "config.h"
  29 #include "mp_msg.h"
  30 #include "help_mp.h"
  31 #include "gtf.h"
  32 #include <stdio.h>
  33 #if HAVE_MALLOC_H
  34 #include <malloc.h>
  35 #endif
  36 #include <stdlib.h>
  37 #include <string.h>
  38 #include <stddef.h>
  39 #include <limits.h>
  40 #include <unistd.h>
  41 #include <pwd.h>
  42 #include <sys/types.h>
  43 #include <sys/stat.h>
  44 #include <fcntl.h>
  45
  46 #include <vbe.h>
  47
  48 #include "video_out.h"
  49 #include "video_out_internal.h"
  50
  51 #include "fastmemcpy.h"
  52 #include "sub.h"
  53 #include "libavutil/common.h"
  54 #include "mpbswap.h"
  55 #include "aspect.h"
  56 #include "vesa_lvo.h"
  57 #ifdef CONFIG_VIDIX
  58 #include "vosub_vidix.h"
  59 #endif
  60 #include "mp_msg.h"
  61
  62 #include "libswscale/swscale.h"
  63 #include "libmpcodecs/vf_scale.h"
  64
  65
  66 #define MAX_BUFFERS 3
  67
  68 #ifndef max
  69 #define max(a,b) ((a)>(b)?(a):(b))
  70 #endif
  71 #ifndef min
  72 #define min(a,b) ((a)<(b)?(a):(b))
  73 #endif
  74
  75 #define UNUSED(x) ((void)(x)) /**< Removes warning about unused arguments */
  76
  77 static const vo_info_t info =
  78 {
  79         "VESA VBE 2.0 video output",
  80         "vesa",
  81         "Nick Kurshev <nickols_k@mail.ru>",
  82         "Requires ROOT privileges"
  83 };
  84
  85 LIBVO_EXTERN(vesa)
  86
  87 /* driver data */
  88
  89 struct win_frame
  90 {
  91   uint8_t   *ptr;   /* pointer to window's frame memory */
  92   uint32_t   low;   /* lowest boundary of frame */
  93   uint32_t   high;  /* highest boundary of frame */
  94   char       idx;   /* indicates index of relocatable frame (A=0 or B=1)
  95                        special case for DGA: idx=-1
  96                        idx=-2 indicates invalid frame, exists only in init() */
  97 };
  98
  99 static void (*cpy_blk_fnc)(unsigned long,uint8_t *,unsigned long) = NULL;
 100
 101 static uint32_t srcW=0,srcH=0,srcBpp,srcFourcc; /* source image description */
 102 static uint32_t dstBpp,dstW, dstH,dstFourcc; /* destinition image description */
 103
 104 static struct SwsContext * sws = NULL;
 105
 106 static int32_t x_offset,y_offset; /* to center image on screen */
 107 static unsigned init_mode=0; /* mode before run of mplayer */
 108 static void *init_state = NULL; /* state before run of mplayer */
 109 static struct win_frame win; /* real-mode window to video memory */
 110 static uint8_t *dga_buffer = NULL; /* for yuv2rgb and sw_scaling */
 111 static unsigned video_mode; /* selected video mode for playback */
 112 static struct VesaModeInfoBlock video_mode_info;
 113 static int flip_trigger = 0;
 114 static void (*draw_alpha_fnc)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride);
 115
 116 /* multibuffering */
 117 uint8_t*  video_base; /* should be never changed */
 118 uint32_t  multi_buff[MAX_BUFFERS]; /* contains offsets of buffers */
 119 uint8_t   multi_size=0; /* total number of buffers */
 120 uint8_t   multi_idx=0; /* active buffer */
 121
 122 /* Linux Video Overlay */
 123 static const char *lvo_name = NULL;
 124 static int lvo_opened = 0;
 125 #ifdef CONFIG_VIDIX
 126 static const char *vidix_name = NULL;
 127 static int vidix_opened = 0;
 128 static vidix_grkey_t gr_key;
 129 #endif
 130
 131 /* Neomagic TV out */
 132 static int neomagic_tvout = 0;
 133 static int neomagic_tvnorm = NEO_PAL;
 134
 135 #define HAS_DGA()  (win.idx == -1)
 136 #define MOVIE_MODE (MODE_ATTR_COLOR | MODE_ATTR_GRAPHICS)
 137 #define FRAME_MODE (MODE_WIN_RELOCATABLE | MODE_WIN_WRITEABLE)
 138
 139 static char * vbeErrToStr(int err)
 140 {
 141   char *retval;
 142   static char sbuff[80];
 143   if((err & VBE_VESA_ERROR_MASK) == VBE_VESA_ERROR_MASK)
 144   {
 145     sprintf(sbuff,"VESA failed = 0x4f%02x",(err & VBE_VESA_ERRCODE_MASK)>>8);
 146     retval = sbuff;
 147   }
 148   else
 149   switch(err)
 150   {
 151     case VBE_OK: retval = "No error"; break;
 152     case VBE_VM86_FAIL: retval = "vm86() syscall failed"; break;
 153     case VBE_OUT_OF_DOS_MEM: retval = "Out of DOS memory"; break;
 154     case VBE_OUT_OF_MEM: retval = "Out of memory"; break;
 155     case VBE_BROKEN_BIOS: retval = "Broken BIOS or DOS TSR"; break;
 156     default: sprintf(sbuff,"Unknown or internal error: %i",err); retval=sbuff; break;
 157   }
 158   return retval;
 159 }
 160
 161 #define PRINT_VBE_ERR(name,err) { mp_msg(MSGT_VO,MSGL_WARN, "vo_vesa: %s returns: %s\n",name,vbeErrToStr(err)); fflush(stdout); }
 162
 163 static void vesa_term( void )
 164 {
 165   int err;
 166   if(lvo_opened) { vlvo_term();  lvo_opened = 0; }
 167 #ifdef CONFIG_VIDIX
 168   else if(vidix_opened) { vidix_term();  vidix_opened = 0; }
 169 #endif
 170   if(init_state) if((err=vbeRestoreState(init_state)) != VBE_OK) PRINT_VBE_ERR("vbeRestoreState",err);
 171   init_state=NULL;
 172   if(init_mode) if((err=vbeSetMode(init_mode,NULL)) != VBE_OK) PRINT_VBE_ERR("vbeSetMode",err);
 173   init_mode=0;
 174   if(HAS_DGA()) vbeUnmapVideoBuffer((unsigned long)win.ptr,win.high);
 175   if(dga_buffer && !HAS_DGA()) free(dga_buffer);
 176   vbeDestroy();
 177   if(sws) sws_freeContext(sws);
 178   sws=NULL;
 179 }
 180
 181 #define VALID_WIN_FRAME(offset) (offset >= win.low && offset < win.high)
 182 #define VIDEO_PTR(offset) (win.ptr + offset - win.low)
 183
 184 static inline void vbeSwitchBank(unsigned long offset)
 185 {
 186   unsigned long gran;
 187   unsigned new_offset;
 188   int err;
 189   gran = video_mode_info.WinGranularity*1024;
 190   new_offset = offset / gran;
 191   if(HAS_DGA()) { err = -1; goto show_err; }
 192   if((err=vbeSetWindow(win.idx,new_offset)) != VBE_OK)
 193   {
 194     show_err:
 195     vesa_term();
 196     PRINT_VBE_ERR("vbeSetWindow",err);
 197     mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_FatalErrorOccurred);
 198     abort();
 199   }
 200   win.low = new_offset * gran;
 201   win.high = win.low + video_mode_info.WinSize*1024;
 202 }
 203
 204 static void vbeSetPixel(int x, int y, int r, int g, int b)
 205 {
 206         int x_res = video_mode_info.XResolution;
 207         int y_res = video_mode_info.YResolution;
 208         int shift_r = video_mode_info.RedFieldPosition;
 209         int shift_g = video_mode_info.GreenFieldPosition;
 210         int shift_b = video_mode_info.BlueFieldPosition;
 211         int pixel_size = (dstBpp+7)/8;
 212         int bpl = video_mode_info.BytesPerScanLine;
 213         int color;
 214         unsigned offset;
 215
 216         if (x < 0 || x >= x_res || y < 0 || y >= y_res) return;
 217         r >>= 8 - video_mode_info.RedMaskSize;
 218         g >>= 8 - video_mode_info.GreenMaskSize;
 219         b >>= 8 - video_mode_info.BlueMaskSize;
 220         color = (r << shift_r) | (g << shift_g) | (b << shift_b);
 221         offset = y * bpl + (x * pixel_size);
 222         if(!VALID_WIN_FRAME(offset)) vbeSwitchBank(offset);
 223         memcpy(VIDEO_PTR(offset), &color, pixel_size);
 224 }
 225
 226 /*
 227   Copies part of frame to video memory. Data should be in the same format
 228   as video memory.
 229 */
 230 static void vbeCopyBlockFast(unsigned long offset,uint8_t *image,unsigned long size)
 231 {
 232   fast_memcpy(&win.ptr[offset],image,size);
 233 }
 234
 235 static void vbeCopyBlock(unsigned long offset,uint8_t *image,unsigned long size)
 236 {
 237    unsigned long delta,src_idx = 0;
 238    while(size)
 239    {
 240         if(!VALID_WIN_FRAME(offset)) vbeSwitchBank(offset);
 241         delta = min(size,win.high - offset);
 242         fast_memcpy(VIDEO_PTR(offset),&image[src_idx],delta);
 243         src_idx += delta;
 244         offset += delta;
 245         size -= delta;
 246    }
 247 }
 248
 249 /*
 250   Copies frame to video memory. Data should be in the same format as video
 251   memory.
 252 */
 253
 254 #define PIXEL_SIZE() ((dstBpp+7)/8)
 255 #define SCREEN_LINE_SIZE(pixel_size) (video_mode_info.XResolution*(pixel_size) )
 256 #define IMAGE_LINE_SIZE(pixel_size) (dstW*(pixel_size))
 257
 258 static void vbeCopyData(uint8_t *image)
 259 {
 260    unsigned long i,j,image_offset,offset;
 261    unsigned pixel_size,image_line_size,screen_line_size,x_shift;
 262    pixel_size = PIXEL_SIZE();
 263    screen_line_size = SCREEN_LINE_SIZE(pixel_size);
 264    image_line_size = IMAGE_LINE_SIZE(pixel_size);
 265    if(dstW == video_mode_info.XResolution)
 266    {
 267      /* Special case for zooming */
 268      (*cpy_blk_fnc)(y_offset*screen_line_size,image,image_line_size*dstH);
 269    }
 270    else
 271    {
 272      x_shift = x_offset*pixel_size;
 273      for(j=0,i=y_offset;j<dstH;i++,j++)
 274      {
 275        offset = i*screen_line_size+x_shift;
 276        image_offset = j*image_line_size;
 277        (*cpy_blk_fnc)(offset,&image[image_offset],image_line_size);
 278      }
 279    }
 280 }
 281
 282 /* is called for yuv only */
 283 static int draw_slice(uint8_t *image[], int stride[], int w,int h,int x,int y)
 284 {
 285     int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 286     uint8_t *dst[3]= {dga_buffer, NULL, NULL};
 287     int dstStride[3];
 288     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 289         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: draw_slice was called: w=%u h=%u x=%u y=%u\n",w,h,x,y);
 290     dstStride[0]=dstride*((dstBpp+7)/8);
 291     dstStride[1]=
 292     dstStride[2]=dstStride[0]>>1;
 293     if(HAS_DGA()) dst[0] += y_offset*SCREEN_LINE_SIZE(PIXEL_SIZE())+x_offset*PIXEL_SIZE();
 294     sws_scale_ordered(sws,image,stride,y,h,dst,dstStride);
 295     flip_trigger = 1;
 296     return 0;
 297 }
 298
 299 /* Please comment it out if you want have OSD within movie */
 300 /*#define OSD_OUTSIDE_MOVIE 1*/
 301
 302 static void draw_alpha_32(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
 303 {
 304    int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 305 #ifndef OSD_OUTSIDE_MOVIE
 306    if(HAS_DGA())
 307    {
 308         x0 += x_offset;
 309         y0 += y_offset;
 310    }
 311 #endif
 312    vo_draw_alpha_rgb32(w,h,src,srca,stride,dga_buffer+4*(y0*dstride+x0),4*dstride);
 313 }
 314
 315 static void draw_alpha_24(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
 316 {
 317    int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 318 #ifndef OSD_OUTSIDE_MOVIE
 319    if(HAS_DGA())
 320    {
 321         x0 += x_offset;
 322         y0 += y_offset;
 323    }
 324 #endif
 325    vo_draw_alpha_rgb24(w,h,src,srca,stride,dga_buffer+3*(y0*dstride+x0),3*dstride);
 326 }
 327
 328 static void draw_alpha_16(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
 329 {
 330    int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 331 #ifndef OSD_OUTSIDE_MOVIE
 332    if(HAS_DGA())
 333    {
 334         x0 += x_offset;
 335         y0 += y_offset;
 336    }
 337 #endif
 338    vo_draw_alpha_rgb16(w,h,src,srca,stride,dga_buffer+2*(y0*dstride+x0),2*dstride);
 339 }
 340
 341 static void draw_alpha_15(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
 342 {
 343    int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 344 #ifndef OSD_OUTSIDE_MOVIE
 345    if(HAS_DGA())
 346    {
 347         x0 += x_offset;
 348         y0 += y_offset;
 349    }
 350 #endif
 351    vo_draw_alpha_rgb15(w,h,src,srca,stride,dga_buffer+2*(y0*dstride+x0),2*dstride);
 352 }
 353
 354 static void draw_alpha_null(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
 355 {
 356   UNUSED(x0);
 357   UNUSED(y0);
 358   UNUSED(w);
 359   UNUSED(h);
 360   UNUSED(src);
 361   UNUSED(srca);
 362   UNUSED(stride);
 363 }
 364
 365
 366 static void draw_osd(void)
 367 {
 368  uint32_t w,h;
 369  if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 370         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: draw_osd was called\n");
 371  {
 372 #ifdef OSD_OUTSIDE_MOVIE
 373    w = HAS_DGA()?video_mode_info.XResolution:dstW;
 374    h = HAS_DGA()?video_mode_info.YResolution:dstH;
 375 #else
 376    w = dstW;
 377    h = dstH;
 378 #endif
 379    if(dga_buffer) vo_draw_text(w,h,draw_alpha_fnc);
 380  }
 381 }
 382
 383 static void flip_page(void)
 384 {
 385   if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 386         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: flip_page was called\n");
 387   if(flip_trigger)
 388   {
 389     if(!HAS_DGA()) vbeCopyData(dga_buffer);
 390     flip_trigger = 0;
 391   }
 392   if(vo_doublebuffering && multi_size > 1)
 393   {
 394     int err;
 395     if((err=vbeSetDisplayStart(multi_buff[multi_idx],vo_vsync)) != VBE_OK)
 396     {
 397       vesa_term();
 398       PRINT_VBE_ERR("vbeSetDisplayStart",err);
 399       mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_FatalErrorOccurred);
 400       abort();
 401     }
 402     multi_idx = multi_idx ? 0 : 1;
 403     win.ptr = dga_buffer = video_base + multi_buff[multi_idx];
 404   }
 405 /*
 406   else
 407   if(tripple_buffering)
 408   {
 409    vbeSetScheduledDisplayStart(multi_buff[multi_idx],vo_vsync);
 410    multi_idx++;
 411    if(multi_idx > 2) multi_idx = 0;
 412    win.ptr = dga_buffer = video_base + multi_buff[multi_idx];
 413   }
 414 */
 415 }
 416
 417 /* is called for rgb only */
 418 static int draw_frame(uint8_t *src[])
 419 {
 420     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 421         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: draw_frame was called\n");
 422     if(sws)
 423     {
 424         int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 425         int srcStride[1];
 426         uint8_t *dst[3]= {dga_buffer, NULL, NULL};
 427         int dstStride[3];
 428         dstStride[0]=dstride*((dstBpp+7)/8);
 429         dstStride[1]=
 430         dstStride[2]=dstStride[0]>>1;
 431         if(srcFourcc == IMGFMT_RGB32 || srcFourcc == IMGFMT_BGR32)
 432             srcStride[0] = srcW*4;
 433         else
 434         if(srcFourcc == IMGFMT_RGB24 || srcFourcc == IMGFMT_BGR24)
 435             srcStride[0] = srcW*3;
 436         else
 437             srcStride[0] = srcW*2;
 438         if(HAS_DGA()) dst[0] += y_offset*SCREEN_LINE_SIZE(PIXEL_SIZE())+x_offset*PIXEL_SIZE();
 439         sws_scale_ordered(sws,src,srcStride,0,srcH,dst,dstStride);
 440         flip_trigger=1;
 441     }
 442     return 0;
 443 }
 444
 445 #define SUBDEV_NODGA     0x00000001UL
 446 #define SUBDEV_FORCEDGA  0x00000002UL
 447 static uint32_t subdev_flags = 0xFFFFFFFEUL;
 448 static uint32_t parseSubDevice(const char *sd)
 449 {
 450    uint32_t flags;
 451    flags = 0;
 452    if(strcmp(sd,"nodga") == 0) { flags |= SUBDEV_NODGA; flags &= ~(SUBDEV_FORCEDGA); }
 453    else
 454    if(strcmp(sd,"dga") == 0)   { flags &= ~(SUBDEV_NODGA); flags |= SUBDEV_FORCEDGA; }
 455    else
 456    if(strcmp(sd,"neotv_pal") == 0)   { neomagic_tvout = 1; neomagic_tvnorm = NEO_PAL; }
 457    else
 458    if(strcmp(sd,"neotv_ntsc") == 0)   { neomagic_tvout = 1; neomagic_tvnorm = NEO_NTSC; }
 459    else
 460    if(memcmp(sd,"lvo:",4) == 0) lvo_name = &sd[4]; /* lvo_name will be valid within init() */
 461 #ifdef CONFIG_VIDIX
 462    else
 463    if(memcmp(sd,"vidix",5) == 0) vidix_name = &sd[5]; /* vidix_name will be valid within init() */
 464 #endif
 465    else { mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_UnknownSubdevice, sd); return 0xFFFFFFFFUL; }
 466    return flags;
 467 }
 468
 469 static int query_format(uint32_t format)
 470 {
 471     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 472         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: query_format was called: %x (%s)\n",format,vo_format_name(format));
 473 #ifdef CONFIG_VIDIX
 474     if(vidix_name) return vidix_query_fourcc(format);
 475 #endif
 476     if (format == IMGFMT_MPEGPES)
 477         return 0;
 478     // FIXME: this is just broken...
 479     return VFCAP_CSP_SUPPORTED | VFCAP_OSD | VFCAP_SWSCALE | VFCAP_ACCEPT_STRIDE; /* due new SwScale code */
 480 }
 481
 482 static void paintBkGnd( void )
 483 {
 484     int x_res = video_mode_info.XResolution;
 485     int y_res = video_mode_info.YResolution;
 486     int x, y;
 487
 488     for (y = 0; y < y_res; ++y)
 489     {
 490         for (x = 0; x < x_res; ++x)
 491         {
 492             int r, g, b;
 493             if ((x & 16) ^ (y & 16))
 494             {
 495                 r = x * 255 / x_res;
 496                 g = y * 255 / y_res;
 497                 b = 255 - x * 255 / x_res;
 498             }
 499             else
 500             {
 501                 r = 255 - x * 255 / x_res;
 502                 g = y * 255 / y_res;
 503                 b = 255 - y * 255 / y_res;
 504             }
 505             vbeSetPixel(x, y, r, g, b);
 506         }
 507     }
 508 }
 509
 510 static void clear_screen( void )
 511 {
 512     int x_res = video_mode_info.XResolution;
 513     int y_res = video_mode_info.YResolution;
 514     int x, y;
 515
 516     for (y = 0; y < y_res; ++y)
 517         for (x = 0; x < x_res; ++x)
 518             vbeSetPixel(x, y, 0, 0, 0);
 519 }
 520
 521 static char *model2str(unsigned char type)
 522 {
 523   char *retval;
 524   switch(type)
 525   {
 526     case memText: retval = "Text"; break;
 527     case memCGA:  retval="CGA"; break;
 528     case memHercules: retval="Hercules"; break;
 529     case memPL: retval="Planar"; break;
 530     case memPK: retval="Packed pixel"; break;
 531     case mem256: retval="256"; break;
 532     case memRGB: retval="Direct color RGB"; break;
 533     case memYUV: retval="Direct color YUV"; break;
 534     default: retval="Unknown"; break;
 535   }
 536   return retval;
 537 }
 538
 539 unsigned fillMultiBuffer( unsigned long vsize, unsigned nbuffs )
 540 {
 541   unsigned long screen_size, offset;
 542   unsigned total,i;
 543   screen_size = video_mode_info.XResolution*video_mode_info.YResolution*((dstBpp+7)/8);
 544   if(screen_size%64) screen_size=((screen_size/64)*64)+64;
 545   total = vsize / screen_size;
 546   if( mp_msg_test(MSGT_VO,MSGL_V) )
 547     mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Can use up to %u video buffers\n",total);
 548   i = 0;
 549   offset = 0;
 550   total = min(total,nbuffs);
 551   while(i < total) { multi_buff[i++] = offset; offset += screen_size; }
 552   if(!i)
 553     mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_YouHaveTooLittleVideoMemory, screen_size, vsize);
 554   return i;
 555 }
 556
 557
 558 static int set_refresh(unsigned x, unsigned y, unsigned mode,struct VesaCRTCInfoBlock *crtc_pass)
 559 {
 560     unsigned pixclk;
 561     float H_freq;
 562
 563     range_t *monitor_hfreq = NULL;
 564     range_t *monitor_vfreq = NULL;
 565     range_t *monitor_dotclock = NULL;
 566
 567     monitor_hfreq = str2range(monitor_hfreq_str);
 568     monitor_vfreq = str2range(monitor_vfreq_str);
 569     monitor_dotclock = str2range(monitor_dotclock_str);
 570
 571                 if (!monitor_hfreq || !monitor_vfreq || !monitor_dotclock) {
 572                         mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_YouHaveToSpecifyTheCapabilitiesOfTheMonitor);
 573                         return 0;
 574                 }
 575
 576     H_freq = range_max(monitor_hfreq)/1000;
 577
 578 //    printf("H_freq MAX %f\n",H_freq);
 579
 580     do
 581     {
 582     H_freq -= 0.01;
 583     GTF_calcTimings(x,y,H_freq,GTF_HF,0, 0,crtc_pass);
 584 //    printf("PixelCLK %d\n",(unsigned)crtc_pass->PixelClock);
 585     }
 586     while ( (!in_range(monitor_vfreq,crtc_pass->RefreshRate/100)||
 587             !in_range(monitor_hfreq,H_freq*1000))&&(H_freq>0));
 588
 589     pixclk = crtc_pass->PixelClock;
 590 //    printf("PIXclk before %d\n",pixclk);
 591     vbeGetPixelClock(&mode,&pixclk);
 592 //    printf("PIXclk after %d\n",pixclk);
 593     GTF_calcTimings(x,y,pixclk/1000000,GTF_PF,0,0,crtc_pass);
 594 //    printf("Flags: %x\n",(unsigned) crtc_pass->Flags);
 595 /*
 596     printf("hTotal %d\n",crtc_pass->hTotal);
 597     printf("hSyncStart %d\n",crtc_pass->hSyncStart);
 598     printf("hSyncEnd %d\n",crtc_pass->hSyncEnd);
 599
 600     printf("vTotal %d\n",crtc_pass->vTotal);
 601     printf("vSyncStart %d\n",crtc_pass->vSyncStart);
 602     printf("vSyncEnd %d\n",crtc_pass->vSyncEnd);
 603
 604     printf("RR %d\n",crtc_pass->RefreshRate);
 605     printf("PixelCLK %d\n",(unsigned)crtc_pass->PixelClock);*/
 606
 607     if (!in_range(monitor_vfreq,crtc_pass->RefreshRate/100)||
 608         !in_range(monitor_hfreq,H_freq*1000)) {
 609         mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_UnableToFitTheMode);
 610         return 0;
 611     }
 612
 613     return 1;
 614 }
 615
 616 /* fullscreen:
 617  * bit 0 (0x01) means fullscreen (-fs)
 618  * bit 1 (0x02) means mode switching (-vm)
 619  * bit 2 (0x04) enables software scaling (-zoom)
 620  * bit 3 (0x08) enables flipping (-flip) (NK: and for what?)
 621  */
 622
 623 static int
 624 config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format)
 625 {
 626   static struct VbeInfoBlock vib;
 627   static int vib_set;
 628   struct VesaModeInfoBlock vmib;
 629   struct VesaCRTCInfoBlock crtc_pass;
 630   size_t i,num_modes;
 631   uint32_t w,h;
 632   unsigned short *mode_ptr,win_seg;
 633   unsigned bpp,best_x = UINT_MAX,best_y=UINT_MAX,best_mode_idx = UINT_MAX;
 634   int err,fs_mode,use_scaler=0;
 635         srcW = dstW = width;
 636         srcH = dstH = height;
 637         fs_mode = 0;
 638         if(subdev_flags == 0xFFFFFFFEUL)
 639         {
 640           mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_DetectedInternalFatalError);
 641           return -1;
 642         }
 643         if(subdev_flags == 0xFFFFFFFFUL) return -1;
 644         if(flags & VOFLAG_FLIPPING)
 645         {
 646           mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_SwitchFlipIsNotSupported);
 647         }
 648         if(flags & VOFLAG_SWSCALE) use_scaler = 1;
 649         if(flags & VOFLAG_FULLSCREEN)
 650         {
 651           if(use_scaler) use_scaler = 2;
 652           else          fs_mode = 1;
 653         }
 654         if((err=vbeInit()) != VBE_OK) { PRINT_VBE_ERR("vbeInit",err); return -1; }
 655         memcpy(vib.VESASignature,"VBE2",4);
 656         if(!vib_set && (err=vbeGetControllerInfo(&vib)) != VBE_OK)
 657         {
 658           PRINT_VBE_ERR("vbeGetControllerInfo",err);
 659           mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_PossibleReasonNoVbe2BiosFound);
 660           return -1;
 661         }
 662         vib_set = 1;
 663         /* Print general info here */
 664         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_FoundVesaVbeBiosVersion,
 665                 (int)(vib.VESAVersion >> 8) & 0xff,
 666                 (int)(vib.VESAVersion & 0xff),
 667                 (int)(vib.OemSoftwareRev & 0xffff));
 668         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_VideoMemory,vib.TotalMemory*64);
 669         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_Capabilites
 670                 ,vib.Capabilities & VBE_DAC_8BIT ? "8-bit DAC," : "6-bit DAC,"
 671                 ,vib.Capabilities & VBE_NONVGA_CRTC ? "non-VGA CRTC,":"VGA CRTC,"
 672                 ,vib.Capabilities & VBE_SNOWED_RAMDAC ? "snowed RAMDAC,":"normal RAMDAC,"
 673                 ,vib.Capabilities & VBE_STEREOSCOPIC ? "stereoscopic,":"no stereoscopic,"
 674                 ,vib.Capabilities & VBE_STEREO_EVC ? "Stereo EVC":"no stereo");
 675         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_BelowWillBePrintedOemInfo);
 676         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_YouShouldSee5OemRelatedLines);
 677         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OemInfo,vib.OemStringPtr);
 678         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OemRevision,vib.OemSoftwareRev);
 679         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OemVendor,vib.OemVendorNamePtr);
 680         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OemProductName,vib.OemProductNamePtr);
 681         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OemProductRev,vib.OemProductRevPtr);
 682         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_Hint);
 683         /* Find best mode here */
 684         num_modes = 0;
 685         mode_ptr = vib.VideoModePtr;
 686         while(*mode_ptr++ != 0xffff) num_modes++;
 687         switch(format)
 688         {
 689                 case IMGFMT_BGR8:
 690                 case IMGFMT_RGB8:  bpp = 8; break;
 691                 case IMGFMT_BGR15:
 692                 case IMGFMT_RGB15: bpp = 15; break;
 693                 case IMGFMT_BGR16:
 694                 case IMGFMT_RGB16: bpp = 16; break;
 695                 case IMGFMT_BGR24:
 696                 case IMGFMT_RGB24: bpp = 24; break;
 697                 case IMGFMT_BGR32:
 698                 case IMGFMT_RGB32: bpp = 32; break;
 699                 default:           bpp = 16; break;
 700         }
 701         srcBpp = bpp;
 702         srcFourcc = format;
 703         if(vo_dbpp) bpp = vo_dbpp;
 704         switch(bpp)
 705         {
 706           case 15: draw_alpha_fnc = draw_alpha_15;
 707                    dstFourcc = IMGFMT_BGR15;
 708                    break;
 709           case 16: draw_alpha_fnc = draw_alpha_16;
 710                    dstFourcc = IMGFMT_BGR16;
 711                    break;
 712           case 24: draw_alpha_fnc = draw_alpha_24;
 713                    dstFourcc = IMGFMT_BGR24;
 714                    break;
 715           case 32: draw_alpha_fnc = draw_alpha_32;
 716                    dstFourcc = IMGFMT_BGR32;
 717                    break;
 718           default: draw_alpha_fnc = draw_alpha_null;
 719                    dstFourcc = IMGFMT_BGR16;
 720                    break;
 721         }
 722         if( mp_msg_test(MSGT_VO,MSGL_V) )
 723         {
 724           mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Requested mode: %ux%u@%u (%s)\n",width,height,bpp,vo_format_name(format));
 725           mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Total modes found: %u\n",num_modes);
 726           mode_ptr = vib.VideoModePtr;
 727           mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Mode list:");
 728           for(i = 0;i < num_modes;i++)
 729           {
 730             mp_msg(MSGT_VO,MSGL_V, " %04X",mode_ptr[i]);
 731           }
 732           mp_msg(MSGT_VO,MSGL_V, "\nvo_vesa: Modes in detail:\n");
 733         }
 734         mode_ptr = vib.VideoModePtr;
 735         if(use_scaler)
 736         {
 737             dstW = d_width;
 738             dstH = d_height;
 739         }
 740         if(vo_screenwidth) w = vo_screenwidth;
 741         else w = max(dstW,width);
 742         if(vo_screenheight) h = vo_screenheight;
 743         else h = max(dstH,height);
 744         for(i=0;i < num_modes;i++)
 745         {
 746                 if((err=vbeGetModeInfo(mode_ptr[i],&vmib)) != VBE_OK)
 747                 {
 748                         PRINT_VBE_ERR("vbeGetModeInfo",err);
 749                         continue;
 750                 }
 751                 if(vmib.XResolution >= w &&
 752                    vmib.YResolution >= h &&
 753                    (vmib.ModeAttributes & MOVIE_MODE) == MOVIE_MODE &&
 754                    vmib.BitsPerPixel == bpp &&
 755                    vmib.MemoryModel == memRGB)
 756                    {
 757                         if(vmib.XResolution <= best_x &&
 758                            vmib.YResolution <= best_y)
 759                            {
 760                                 best_x = vmib.XResolution;
 761                                 best_y = vmib.YResolution;
 762                                 best_mode_idx = i;
 763                            }
 764                    }
 765                 if( mp_msg_test(MSGT_VO,MSGL_V) )
 766                 {
 767                   mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Mode (%03u): mode=%04X %ux%u@%u attr=%04X\n"
 768                          "vo_vesa:             #planes=%u model=%u(%s) #pages=%u\n"
 769                          "vo_vesa:             winA=%X(attr=%u) winB=%X(attr=%u) winSize=%u winGran=%u\n"
 770                          "vo_vesa:             direct_color=%u DGA_phys_addr=%08lX\n"
 771                          ,i,mode_ptr[i],vmib.XResolution,vmib.YResolution,vmib.BitsPerPixel,vmib.ModeAttributes
 772                          ,vmib.NumberOfPlanes,vmib.MemoryModel,model2str(vmib.MemoryModel),vmib.NumberOfImagePages
 773                          ,vmib.WinASegment,vmib.WinAAttributes,vmib.WinBSegment,vmib.WinBAttributes,vmib.WinSize,vmib.WinGranularity
 774                          ,vmib.DirectColorModeInfo,vmib.PhysBasePtr);
 775                   if(vmib.MemoryModel == 6 || vmib.MemoryModel == 7)
 776                         mp_msg(MSGT_VO,MSGL_V, "vo_vesa:             direct_color_info = %u:%u:%u:%u\n"
 777                                 ,vmib.RedMaskSize,vmib.GreenMaskSize,vmib.BlueMaskSize,vmib.RsvdMaskSize);
 778                   fflush(stdout);
 779                 }
 780         }
 781         if(best_mode_idx != UINT_MAX)
 782         {
 783                 video_mode = vib.VideoModePtr[best_mode_idx];
 784                 fflush(stdout);
 785                 if((err=vbeGetMode(&init_mode)) != VBE_OK)
 786                 {
 787                         PRINT_VBE_ERR("vbeGetMode",err);
 788                         return -1;
 789                 }
 790                 if( mp_msg_test(MSGT_VO,MSGL_V) ) {
 791                         mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Initial video mode: %x\n",init_mode); }
 792                 if((err=vbeGetModeInfo(video_mode,&video_mode_info)) != VBE_OK)
 793                 {
 794                         PRINT_VBE_ERR("vbeGetModeInfo",err);
 795                         return -1;
 796                 }
 797                 dstBpp = video_mode_info.BitsPerPixel;
 798                 mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_UsingVesaMode
 799                         ,best_mode_idx,video_mode,video_mode_info.XResolution
 800                         ,video_mode_info.YResolution,dstBpp);
 801                 if(subdev_flags & SUBDEV_NODGA) video_mode_info.PhysBasePtr = 0;
 802                 if(use_scaler || fs_mode)
 803                 {
 804                       /* software scale */
 805                       if(use_scaler > 1
 806 #ifdef CONFIG_VIDIX
 807                                 || vidix_name
 808 #endif
 809                           )
 810                       {
 811                         aspect_save_orig(width,height);
 812                         aspect_save_prescale(d_width,d_height);
 813                         aspect_save_screenres(video_mode_info.XResolution,video_mode_info.YResolution);
 814                         aspect(&dstW,&dstH,A_ZOOM);
 815                       }
 816                       else
 817                       if(fs_mode)
 818                       {
 819                         dstW = video_mode_info.XResolution;
 820                         dstH = video_mode_info.YResolution;
 821                       }
 822                       use_scaler = 1;
 823                 }
 824                 if(!lvo_name
 825 #ifdef CONFIG_VIDIX
 826                 && !vidix_name
 827 #endif
 828                 )
 829                 {
 830                     sws = sws_getContextFromCmdLine(srcW,srcH,srcFourcc,dstW,dstH,dstFourcc);
 831                     if(!sws)
 832                     {
 833                         mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_CantInitializeSwscaler);
 834                         return -1;
 835                     }
 836                     else if( mp_msg_test(MSGT_VO,MSGL_V) ) {
 837                         mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Using SW BES emulator\n"); }
 838                 }
 839                 if((video_mode_info.WinAAttributes & FRAME_MODE) == FRAME_MODE)
 840                    win.idx = 0; /* frame A */
 841                 else
 842                 if((video_mode_info.WinBAttributes & FRAME_MODE) == FRAME_MODE)
 843                    win.idx = 1; /* frame B */
 844                 else win.idx = -2;
 845                 /* Try use DGA instead */
 846                 if(video_mode_info.PhysBasePtr && vib.TotalMemory && (video_mode_info.ModeAttributes & MODE_ATTR_LINEAR))
 847                 {
 848                     void *lfb;
 849                     unsigned long vsize;
 850                     vsize = vib.TotalMemory*64*1024;
 851                     lfb = vbeMapVideoBuffer(video_mode_info.PhysBasePtr,vsize);
 852                     if(lfb == NULL)
 853                       mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_CantUseDga);
 854                     else
 855                     {
 856                       video_base = win.ptr = lfb;
 857                       win.low = 0UL;
 858                       win.high = vsize;
 859                       win.idx = -1; /* HAS_DGA() is on */
 860                       video_mode |= VESA_MODE_USE_LINEAR;
 861                       mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_UsingDga
 862                              ,video_mode_info.PhysBasePtr
 863                              ,vsize);
 864                       if( mp_msg_test(MSGT_VO,MSGL_V) ) {
 865                         printf(" at %08lXh",(unsigned long)lfb); }
 866                       printf("\n");
 867                       if(!(multi_size = fillMultiBuffer(vsize,2))) return -1;
 868                       if(vo_doublebuffering && multi_size < 2)
 869                         mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_CantUseDoubleBuffering);
 870                     }
 871                 }
 872                 if(win.idx == -2)
 873                 {
 874                    mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantFindNeitherDga);
 875                    return -1;
 876                 }
 877                 if(!HAS_DGA())
 878                 {
 879                   if(subdev_flags & SUBDEV_FORCEDGA)
 880                   {
 881                         mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_YouveForcedDga);
 882                         return -1;
 883                   }
 884                   if(!(win_seg = win.idx == 0 ? video_mode_info.WinASegment:video_mode_info.WinBSegment))
 885                   {
 886                     mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantFindValidWindowAddress);
 887                     return -1;
 888                   }
 889                   win.ptr = PhysToVirtSO(win_seg,0);
 890                   win.low = 0L;
 891                   win.high= video_mode_info.WinSize*1024;
 892                   mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_UsingBankSwitchingMode
 893                          ,(unsigned long)win.ptr,(unsigned long)win.high);
 894                 }
 895                 if(video_mode_info.XResolution > dstW)
 896                     x_offset = (video_mode_info.XResolution - dstW) / 2;
 897                 else x_offset = 0;
 898                 if(video_mode_info.YResolution > dstH)
 899                     y_offset = (video_mode_info.YResolution - dstH) / 2;
 900                 else y_offset = 0;
 901                 if( mp_msg_test(MSGT_VO,MSGL_V) )
 902                   mp_msg(MSGT_VO,MSGL_V, "vo_vesa: image: %ux%u screen = %ux%u x_offset = %u y_offset = %u\n"
 903                         ,dstW,dstH
 904                         ,video_mode_info.XResolution,video_mode_info.YResolution
 905                         ,x_offset,y_offset);
 906                 if(HAS_DGA())
 907                 {
 908                   dga_buffer = win.ptr; /* Trickly ;) */
 909                   cpy_blk_fnc = vbeCopyBlockFast;
 910                 }
 911                 else
 912                 {
 913                   cpy_blk_fnc = vbeCopyBlock;
 914                   if(!lvo_name
 915 #ifdef CONFIG_VIDIX
 916                    && !vidix_name
 917 #endif
 918                   )
 919                   {
 920                     if(!(dga_buffer = memalign(64,video_mode_info.XResolution*video_mode_info.YResolution*dstBpp)))
 921                     {
 922                       mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantAllocateTemporaryBuffer);
 923                       return -1;
 924                     }
 925                     if( mp_msg_test(MSGT_VO,MSGL_V) ) {
 926                         mp_msg(MSGT_VO,MSGL_V, "vo_vesa: dga emulator was allocated = %p\n",dga_buffer); }
 927                   }
 928                 }
 929                 if((err=vbeSaveState(&init_state)) != VBE_OK)
 930                 {
 931                         PRINT_VBE_ERR("vbeSaveState",err);
 932                 }
 933
 934                 /* TODO:
 935                          user might pass refresh value,
 936                          GTF constants might be read from monitor
 937                          for best results, I don't have a spec (RM)
 938                 */
 939
 940                 if (((int)(vib.VESAVersion >> 8) & 0xff) > 2) {
 941
 942                 if (set_refresh(video_mode_info.XResolution,video_mode_info.YResolution,video_mode,&crtc_pass))
 943                 video_mode = video_mode | 0x800;
 944
 945                 }
 946
 947                 ;
 948
 949                 if ((err=vbeSetMode(video_mode,&crtc_pass)) != VBE_OK)
 950                 {
 951                         PRINT_VBE_ERR("vbeSetMode",err);
 952                         return -1;
 953                 }
 954
 955                 if (neomagic_tvout) {
 956                     err = vbeSetTV(video_mode,neomagic_tvnorm);
 957                     if (err!=0x4f) {
 958                     mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_SorryUnsupportedMode);
 959                     }
 960                     else {
 961                     mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OhYouReallyHavePictureOnTv);
 962                     }
 963                 }
 964                 /* Now we are in video mode!!!*/
 965                 /* Below 'return -1' is impossible */
 966                 if( mp_msg_test(MSGT_VO,MSGL_V) )
 967                 {
 968                   mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Graphics mode was activated\n");
 969                   fflush(stdout);
 970                 }
 971                 if(lvo_name)
 972                 {
 973                   if(vlvo_init(width,height,x_offset,y_offset,dstW,dstH,format,dstBpp) != 0)
 974                   {
 975                     mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantInitialozeLinuxVideoOverlay);
 976                     vesa_term();
 977                     return -1;
 978                   }
 979                   else mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_UsingVideoOverlay,lvo_name);
 980                   lvo_opened = 1;
 981                 }
 982 #ifdef CONFIG_VIDIX
 983                 else
 984                 if(vidix_name)
 985                 {
 986                   if(vidix_init(width,height,x_offset,y_offset,dstW,
 987                                 dstH,format,dstBpp,
 988                                 video_mode_info.XResolution,video_mode_info.YResolution) != 0)
 989                   {
 990                     mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantInitializeVidixDriver);
 991                     vesa_term();
 992                     return -1;
 993                   }
 994                   else mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_UsingVidix);
 995                   vidix_start();
 996
 997                   /* set colorkey */
 998                   if (vidix_grkey_support())
 999                   {
1000                     vidix_grkey_get(&gr_key);
1001                     gr_key.key_op = KEYS_PUT;
1002 #if 0
1003                     if (!(vo_colorkey & 0xFF000000))
1004                     {
1005                         gr_key.ckey.op = CKEY_TRUE;
1006                         gr_key.ckey.red = (vo_colorkey & 0x00FF0000) >> 16;
1007                         gr_key.ckey.green = (vo_colorkey & 0x0000FF00) >> 8;
1008                         gr_key.ckey.blue = vo_colorkey & 0x000000FF;
1009                     } else
1010 #endif
1011                         gr_key.ckey.op = CKEY_FALSE;
1012                     vidix_grkey_set(&gr_key);
1013                   }
1014                   vidix_opened = 1;
1015                 }
1016 #endif
1017         }
1018         else
1019         {
1020           mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantFindModeFor,width,height,bpp);
1021           return -1;
1022         }
1023         if( mp_msg_test(MSGT_VO,MSGL_V) )
1024         {
1025           mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_InitializationComplete);
1026           fflush(stdout);
1027         }
1028         if(HAS_DGA() && vo_doublebuffering)
1029         {
1030             if (VBE_OK != vbeSetDisplayStart(0, vo_vsync))
1031             {
1032               mp_msg(MSGT_VO,MSGL_WARN, "[VO_VESA] Can't use double buffering: changing displays failed.\n");
1033               multi_size = 1;
1034             }
1035             for(i=0;i<multi_size;i++)
1036             {
1037                 win.ptr = dga_buffer = video_base + multi_buff[i];
1038                 clear_screen(); /* Clear screen for stupid BIOSes */
1039                 if( mp_msg_test(MSGT_VO,MSGL_DBG2) ) paintBkGnd();
1040             }
1041         }
1042         else
1043         {
1044             clear_screen();     /* Clear screen for stupid BIOSes */
1045             if( mp_msg_test(MSGT_VO,MSGL_DBG2) )
1046             {
1047                 int x;
1048                 x = (video_mode_info.XResolution/video_mode_info.XCharSize)/2-strlen(title)/2;
1049                 if(x < 0) x = 0;
1050                 paintBkGnd();
1051                 vbeWriteString(x,0,7,title);
1052             }
1053         }
1054         return 0;
1055 }
1056
1057 static void
1058 uninit(void)
1059 {
1060     // not initialized
1061     vesa_term();
1062     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
1063         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: uninit was called\n");
1064 }
1065
1066
1067 static void check_events(void)
1068 {
1069     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
1070         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: check_events was called\n");
1071 /* Nothing to do */
1072 }
1073
1074 static int preinit(const char *arg)
1075 {
1076   int pre_init_err = 0;
1077   int fd;
1078   if( mp_msg_test(MSGT_VO,MSGL_DBG2) )
1079         mp_msg(MSGT_VO,MSGL_DBG2, "vo_vesa: preinit(%s) was called\n",arg);
1080   if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
1081         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: subdevice %s is being initialized\n",arg);
1082   subdev_flags = 0;
1083   lvo_name = NULL;
1084 #ifdef CONFIG_VIDIX
1085   vidix_name = NULL;
1086 #endif
1087   if(arg) subdev_flags = parseSubDevice(arg);
1088   if(lvo_name) pre_init_err = vlvo_preinit(lvo_name);
1089 #ifdef CONFIG_VIDIX
1090   else if(vidix_name) pre_init_err = vidix_preinit(vidix_name,
1091                                                 video_out_vesa.old_functions);
1092 #endif
1093   // check if we can open /dev/mem (it will be opened later in config(), but if we
1094   // detect now that we can't we can exit cleanly)
1095   fd = open("/dev/mem", O_RDWR);
1096   if (fd < 0)
1097         return -1;
1098   else
1099         close(fd);
1100   if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
1101         mp_msg(MSGT_VO,MSGL_DBG3, "vo_subdevice: initialization returns: %i\n",pre_init_err);
1102   return pre_init_err;
1103 }
1104
1105 static int control(uint32_t request, void *data)
1106 {
1107   switch (request) {
1108   case VOCTRL_QUERY_FORMAT:
1109     return query_format(*((uint32_t*)data));
1110   }
1111
1112 #ifdef CONFIG_VIDIX
1113   if (vidix_name)
1114     return vidix_control(request, data);
1115 #endif
1116
1117   return VO_NOTIMPL;
1118 }