libvo/vo_vesa.c

   1 /*
   2  *  video_out_vesa.c
   3  *
   4  *      Copyright (C) Nick Kurshev <nickols_k@mail.ru> - Oct 2001
   5  *
   6  *  You can redistribute this file under terms and conditions
   7  *  of GNU General Public licence v2 or later.
   8  *  This file is partly based on vbetest.c from lrmi distributive.
   9  */
  10
  11 /*
  12   TODO:
  13   - hw YUV support (need volunteers who have corresponding hardware)
  14   - triple buffering (if it will really speedup playback).
  15     note: triple buffering requires VBE 3.0 - need volunteers.
  16 */
  17 #include "config.h"
  18 #include "mp_msg.h"
  19 #include "help_mp.h"
  20 #include "gtf.h"
  21 #include <stdio.h>
  22 #ifdef HAVE_MALLOC_H
  23 #include <malloc.h>
  24 #endif
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <stddef.h>
  28 #include <limits.h>
  29 #include <unistd.h>
  30 #include <pwd.h>
  31 #include <sys/types.h>
  32 #include <sys/stat.h>
  33 #include <fcntl.h>
  34
  35 #include <vbe.h>
  36
  37 #include "video_out.h"
  38 #include "video_out_internal.h"
  39
  40 #include "fastmemcpy.h"
  41 #include "sub.h"
  42 #include "libavutil/common.h"
  43 #include "mpbswap.h"
  44 #include "aspect.h"
  45 #include "vesa_lvo.h"
  46 #ifdef CONFIG_VIDIX
  47 #include "vosub_vidix.h"
  48 #endif
  49 #include "mp_msg.h"
  50
  51 #include "libswscale/swscale.h"
  52 #include "libmpcodecs/vf_scale.h"
  53
  54
  55 #define MAX_BUFFERS 3
  56
  57 #ifndef max
  58 #define max(a,b) ((a)>(b)?(a):(b))
  59 #endif
  60 #ifndef min
  61 #define min(a,b) ((a)<(b)?(a):(b))
  62 #endif
  63
  64 #define UNUSED(x) ((void)(x)) /**< Removes warning about unused arguments */
  65
  66 static const vo_info_t info =
  67 {
  68         "VESA VBE 2.0 video output",
  69         "vesa",
  70         "Nick Kurshev <nickols_k@mail.ru>",
  71         "Requires ROOT privileges"
  72 };
  73
  74 LIBVO_EXTERN(vesa)
  75
  76 /* driver data */
  77
  78 struct win_frame
  79 {
  80   uint8_t   *ptr;   /* pointer to window's frame memory */
  81   uint32_t   low;   /* lowest boundary of frame */
  82   uint32_t   high;  /* highest boundary of frame */
  83   char       idx;   /* indicates index of relocatable frame (A=0 or B=1)
  84                        special case for DGA: idx=-1
  85                        idx=-2 indicates invalid frame, exists only in init() */
  86 };
  87
  88 static void (*cpy_blk_fnc)(unsigned long,uint8_t *,unsigned long) = NULL;
  89
  90 static uint32_t srcW=0,srcH=0,srcBpp,srcFourcc; /* source image description */
  91 static uint32_t dstBpp,dstW, dstH,dstFourcc; /* destinition image description */
  92
  93 static struct SwsContext * sws = NULL;
  94
  95 static int32_t x_offset,y_offset; /* to center image on screen */
  96 static unsigned init_mode=0; /* mode before run of mplayer */
  97 static void *init_state = NULL; /* state before run of mplayer */
  98 static struct win_frame win; /* real-mode window to video memory */
  99 static uint8_t *dga_buffer = NULL; /* for yuv2rgb and sw_scaling */
 100 static unsigned video_mode; /* selected video mode for playback */
 101 static struct VesaModeInfoBlock video_mode_info;
 102 static int flip_trigger = 0;
 103 static void (*draw_alpha_fnc)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride);
 104
 105 /* multibuffering */
 106 uint8_t*  video_base; /* should be never changed */
 107 uint32_t  multi_buff[MAX_BUFFERS]; /* contains offsets of buffers */
 108 uint8_t   multi_size=0; /* total number of buffers */
 109 uint8_t   multi_idx=0; /* active buffer */
 110
 111 /* Linux Video Overlay */
 112 static const char *lvo_name = NULL;
 113 static int lvo_opened = 0;
 114 #ifdef CONFIG_VIDIX
 115 static const char *vidix_name = NULL;
 116 static int vidix_opened = 0;
 117 static vidix_grkey_t gr_key;
 118 #endif
 119
 120 /* Neomagic TV out */
 121 static int neomagic_tvout = 0;
 122 static int neomagic_tvnorm = NEO_PAL;
 123
 124 #define HAS_DGA()  (win.idx == -1)
 125 #define MOVIE_MODE (MODE_ATTR_COLOR | MODE_ATTR_GRAPHICS)
 126 #define FRAME_MODE (MODE_WIN_RELOCATABLE | MODE_WIN_WRITEABLE)
 127
 128 static char * vbeErrToStr(int err)
 129 {
 130   char *retval;
 131   static char sbuff[80];
 132   if((err & VBE_VESA_ERROR_MASK) == VBE_VESA_ERROR_MASK)
 133   {
 134     sprintf(sbuff,"VESA failed = 0x4f%02x",(err & VBE_VESA_ERRCODE_MASK)>>8);
 135     retval = sbuff;
 136   }
 137   else
 138   switch(err)
 139   {
 140     case VBE_OK: retval = "No error"; break;
 141     case VBE_VM86_FAIL: retval = "vm86() syscall failed"; break;
 142     case VBE_OUT_OF_DOS_MEM: retval = "Out of DOS memory"; break;
 143     case VBE_OUT_OF_MEM: retval = "Out of memory"; break;
 144     case VBE_BROKEN_BIOS: retval = "Broken BIOS or DOS TSR"; break;
 145     default: sprintf(sbuff,"Unknown or internal error: %i",err); retval=sbuff; break;
 146   }
 147   return retval;
 148 }
 149
 150 #define PRINT_VBE_ERR(name,err) { mp_msg(MSGT_VO,MSGL_WARN, "vo_vesa: %s returns: %s\n",name,vbeErrToStr(err)); fflush(stdout); }
 151
 152 static void vesa_term( void )
 153 {
 154   int err;
 155   if(lvo_opened) { vlvo_term();  lvo_opened = 0; }
 156 #ifdef CONFIG_VIDIX
 157   else if(vidix_opened) { vidix_term();  vidix_opened = 0; }
 158 #endif
 159   if(init_state) if((err=vbeRestoreState(init_state)) != VBE_OK) PRINT_VBE_ERR("vbeRestoreState",err);
 160   init_state=NULL;
 161   if(init_mode) if((err=vbeSetMode(init_mode,NULL)) != VBE_OK) PRINT_VBE_ERR("vbeSetMode",err);
 162   init_mode=0;
 163   if(HAS_DGA()) vbeUnmapVideoBuffer((unsigned long)win.ptr,win.high);
 164   if(dga_buffer && !HAS_DGA()) free(dga_buffer);
 165   vbeDestroy();
 166   if(sws) sws_freeContext(sws);
 167   sws=NULL;
 168 }
 169
 170 #define VALID_WIN_FRAME(offset) (offset >= win.low && offset < win.high)
 171 #define VIDEO_PTR(offset) (win.ptr + offset - win.low)
 172
 173 static inline void vbeSwitchBank(unsigned long offset)
 174 {
 175   unsigned long gran;
 176   unsigned new_offset;
 177   int err;
 178   gran = video_mode_info.WinGranularity*1024;
 179   new_offset = offset / gran;
 180   if(HAS_DGA()) { err = -1; goto show_err; }
 181   if((err=vbeSetWindow(win.idx,new_offset)) != VBE_OK)
 182   {
 183     show_err:
 184     vesa_term();
 185     PRINT_VBE_ERR("vbeSetWindow",err);
 186     mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_FatalErrorOccurred);
 187     abort();
 188   }
 189   win.low = new_offset * gran;
 190   win.high = win.low + video_mode_info.WinSize*1024;
 191 }
 192
 193 static void vbeSetPixel(int x, int y, int r, int g, int b)
 194 {
 195         int x_res = video_mode_info.XResolution;
 196         int y_res = video_mode_info.YResolution;
 197         int shift_r = video_mode_info.RedFieldPosition;
 198         int shift_g = video_mode_info.GreenFieldPosition;
 199         int shift_b = video_mode_info.BlueFieldPosition;
 200         int pixel_size = (dstBpp+7)/8;
 201         int bpl = video_mode_info.BytesPerScanLine;
 202         int color;
 203         unsigned offset;
 204
 205         if (x < 0 || x >= x_res || y < 0 || y >= y_res) return;
 206         r >>= 8 - video_mode_info.RedMaskSize;
 207         g >>= 8 - video_mode_info.GreenMaskSize;
 208         b >>= 8 - video_mode_info.BlueMaskSize;
 209         color = (r << shift_r) | (g << shift_g) | (b << shift_b);
 210         offset = y * bpl + (x * pixel_size);
 211         if(!VALID_WIN_FRAME(offset)) vbeSwitchBank(offset);
 212         memcpy(VIDEO_PTR(offset), &color, pixel_size);
 213 }
 214
 215 /*
 216   Copies part of frame to video memory. Data should be in the same format
 217   as video memory.
 218 */
 219 static void vbeCopyBlockFast(unsigned long offset,uint8_t *image,unsigned long size)
 220 {
 221   fast_memcpy(&win.ptr[offset],image,size);
 222 }
 223
 224 static void vbeCopyBlock(unsigned long offset,uint8_t *image,unsigned long size)
 225 {
 226    unsigned long delta,src_idx = 0;
 227    while(size)
 228    {
 229         if(!VALID_WIN_FRAME(offset)) vbeSwitchBank(offset);
 230         delta = min(size,win.high - offset);
 231         fast_memcpy(VIDEO_PTR(offset),&image[src_idx],delta);
 232         src_idx += delta;
 233         offset += delta;
 234         size -= delta;
 235    }
 236 }
 237
 238 /*
 239   Copies frame to video memory. Data should be in the same format as video
 240   memory.
 241 */
 242
 243 #define PIXEL_SIZE() ((dstBpp+7)/8)
 244 #define SCREEN_LINE_SIZE(pixel_size) (video_mode_info.XResolution*(pixel_size) )
 245 #define IMAGE_LINE_SIZE(pixel_size) (dstW*(pixel_size))
 246
 247 static void vbeCopyData(uint8_t *image)
 248 {
 249    unsigned long i,j,image_offset,offset;
 250    unsigned pixel_size,image_line_size,screen_line_size,x_shift;
 251    pixel_size = PIXEL_SIZE();
 252    screen_line_size = SCREEN_LINE_SIZE(pixel_size);
 253    image_line_size = IMAGE_LINE_SIZE(pixel_size);
 254    if(dstW == video_mode_info.XResolution)
 255    {
 256      /* Special case for zooming */
 257      (*cpy_blk_fnc)(y_offset*screen_line_size,image,image_line_size*dstH);
 258    }
 259    else
 260    {
 261      x_shift = x_offset*pixel_size;
 262      for(j=0,i=y_offset;j<dstH;i++,j++)
 263      {
 264        offset = i*screen_line_size+x_shift;
 265        image_offset = j*image_line_size;
 266        (*cpy_blk_fnc)(offset,&image[image_offset],image_line_size);
 267      }
 268    }
 269 }
 270
 271 /* is called for yuv only */
 272 static int draw_slice(uint8_t *image[], int stride[], int w,int h,int x,int y)
 273 {
 274     int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 275     uint8_t *dst[3]= {dga_buffer, NULL, NULL};
 276     int dstStride[3];
 277     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 278         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);
 279     dstStride[0]=dstride*((dstBpp+7)/8);
 280     dstStride[1]=
 281     dstStride[2]=dstStride[0]>>1;
 282     if(HAS_DGA()) dst[0] += y_offset*SCREEN_LINE_SIZE(PIXEL_SIZE())+x_offset*PIXEL_SIZE();
 283     sws_scale_ordered(sws,image,stride,y,h,dst,dstStride);
 284     flip_trigger = 1;
 285     return 0;
 286 }
 287
 288 /* Please comment it out if you want have OSD within movie */
 289 /*#define OSD_OUTSIDE_MOVIE 1*/
 290
 291 static void draw_alpha_32(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
 292 {
 293    int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 294 #ifndef OSD_OUTSIDE_MOVIE
 295    if(HAS_DGA())
 296    {
 297         x0 += x_offset;
 298         y0 += y_offset;
 299    }
 300 #endif
 301    vo_draw_alpha_rgb32(w,h,src,srca,stride,dga_buffer+4*(y0*dstride+x0),4*dstride);
 302 }
 303
 304 static void draw_alpha_24(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
 305 {
 306    int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 307 #ifndef OSD_OUTSIDE_MOVIE
 308    if(HAS_DGA())
 309    {
 310         x0 += x_offset;
 311         y0 += y_offset;
 312    }
 313 #endif
 314    vo_draw_alpha_rgb24(w,h,src,srca,stride,dga_buffer+3*(y0*dstride+x0),3*dstride);
 315 }
 316
 317 static void draw_alpha_16(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
 318 {
 319    int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 320 #ifndef OSD_OUTSIDE_MOVIE
 321    if(HAS_DGA())
 322    {
 323         x0 += x_offset;
 324         y0 += y_offset;
 325    }
 326 #endif
 327    vo_draw_alpha_rgb16(w,h,src,srca,stride,dga_buffer+2*(y0*dstride+x0),2*dstride);
 328 }
 329
 330 static void draw_alpha_15(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
 331 {
 332    int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 333 #ifndef OSD_OUTSIDE_MOVIE
 334    if(HAS_DGA())
 335    {
 336         x0 += x_offset;
 337         y0 += y_offset;
 338    }
 339 #endif
 340    vo_draw_alpha_rgb15(w,h,src,srca,stride,dga_buffer+2*(y0*dstride+x0),2*dstride);
 341 }
 342
 343 static void draw_alpha_null(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
 344 {
 345   UNUSED(x0);
 346   UNUSED(y0);
 347   UNUSED(w);
 348   UNUSED(h);
 349   UNUSED(src);
 350   UNUSED(srca);
 351   UNUSED(stride);
 352 }
 353
 354
 355 static void draw_osd(void)
 356 {
 357  uint32_t w,h;
 358  if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 359         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: draw_osd was called\n");
 360  {
 361 #ifdef OSD_OUTSIDE_MOVIE
 362    w = HAS_DGA()?video_mode_info.XResolution:dstW;
 363    h = HAS_DGA()?video_mode_info.YResolution:dstH;
 364 #else
 365    w = dstW;
 366    h = dstH;
 367 #endif
 368    if(dga_buffer) vo_draw_text(w,h,draw_alpha_fnc);
 369  }
 370 }
 371
 372 static void flip_page(void)
 373 {
 374   if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 375         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: flip_page was called\n");
 376   if(flip_trigger)
 377   {
 378     if(!HAS_DGA()) vbeCopyData(dga_buffer);
 379     flip_trigger = 0;
 380   }
 381   if(vo_doublebuffering && multi_size > 1)
 382   {
 383     int err;
 384     if((err=vbeSetDisplayStart(multi_buff[multi_idx],vo_vsync)) != VBE_OK)
 385     {
 386       vesa_term();
 387       PRINT_VBE_ERR("vbeSetDisplayStart",err);
 388       mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_FatalErrorOccurred);
 389       abort();
 390     }
 391     multi_idx = multi_idx ? 0 : 1;
 392     win.ptr = dga_buffer = video_base + multi_buff[multi_idx];
 393   }
 394 /*
 395   else
 396   if(tripple_buffering)
 397   {
 398    vbeSetScheduledDisplayStart(multi_buff[multi_idx],vo_vsync);
 399    multi_idx++;
 400    if(multi_idx > 2) multi_idx = 0;
 401    win.ptr = dga_buffer = video_base + multi_buff[multi_idx];
 402   }
 403 */
 404 }
 405
 406 /* is called for rgb only */
 407 static int draw_frame(uint8_t *src[])
 408 {
 409     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 410         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: draw_frame was called\n");
 411     if(sws)
 412     {
 413         int dstride=HAS_DGA()?video_mode_info.XResolution:dstW;
 414         int srcStride[1];
 415         uint8_t *dst[3]= {dga_buffer, NULL, NULL};
 416         int dstStride[3];
 417         dstStride[0]=dstride*((dstBpp+7)/8);
 418         dstStride[1]=
 419         dstStride[2]=dstStride[0]>>1;
 420         if(srcFourcc == IMGFMT_RGB32 || srcFourcc == IMGFMT_BGR32)
 421             srcStride[0] = srcW*4;
 422         else
 423         if(srcFourcc == IMGFMT_RGB24 || srcFourcc == IMGFMT_BGR24)
 424             srcStride[0] = srcW*3;
 425         else
 426             srcStride[0] = srcW*2;
 427         if(HAS_DGA()) dst[0] += y_offset*SCREEN_LINE_SIZE(PIXEL_SIZE())+x_offset*PIXEL_SIZE();
 428         sws_scale_ordered(sws,src,srcStride,0,srcH,dst,dstStride);
 429         flip_trigger=1;
 430     }
 431     return 0;
 432 }
 433
 434 #define SUBDEV_NODGA     0x00000001UL
 435 #define SUBDEV_FORCEDGA  0x00000002UL
 436 static uint32_t subdev_flags = 0xFFFFFFFEUL;
 437 static uint32_t parseSubDevice(const char *sd)
 438 {
 439    uint32_t flags;
 440    flags = 0;
 441    if(strcmp(sd,"nodga") == 0) { flags |= SUBDEV_NODGA; flags &= ~(SUBDEV_FORCEDGA); }
 442    else
 443    if(strcmp(sd,"dga") == 0)   { flags &= ~(SUBDEV_NODGA); flags |= SUBDEV_FORCEDGA; }
 444    else
 445    if(strcmp(sd,"neotv_pal") == 0)   { neomagic_tvout = 1; neomagic_tvnorm = NEO_PAL; }
 446    else
 447    if(strcmp(sd,"neotv_ntsc") == 0)   { neomagic_tvout = 1; neomagic_tvnorm = NEO_NTSC; }
 448    else
 449    if(memcmp(sd,"lvo:",4) == 0) lvo_name = &sd[4]; /* lvo_name will be valid within init() */
 450 #ifdef CONFIG_VIDIX
 451    else
 452    if(memcmp(sd,"vidix",5) == 0) vidix_name = &sd[5]; /* vidix_name will be valid within init() */
 453 #endif
 454    else { mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_UnknownSubdevice, sd); return 0xFFFFFFFFUL; }
 455    return flags;
 456 }
 457
 458 static int query_format(uint32_t format)
 459 {
 460     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 461         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: query_format was called: %x (%s)\n",format,vo_format_name(format));
 462 #ifdef CONFIG_VIDIX
 463     if(vidix_name)return(vidix_query_fourcc(format));
 464 #endif
 465     if (format == IMGFMT_MPEGPES)
 466         return 0;
 467     // FIXME: this is just broken...
 468     return VFCAP_CSP_SUPPORTED | VFCAP_OSD | VFCAP_SWSCALE | VFCAP_ACCEPT_STRIDE; /* due new SwScale code */
 469 }
 470
 471 static void paintBkGnd( void )
 472 {
 473     int x_res = video_mode_info.XResolution;
 474     int y_res = video_mode_info.YResolution;
 475     int x, y;
 476
 477     for (y = 0; y < y_res; ++y)
 478     {
 479         for (x = 0; x < x_res; ++x)
 480         {
 481             int r, g, b;
 482             if ((x & 16) ^ (y & 16))
 483             {
 484                 r = x * 255 / x_res;
 485                 g = y * 255 / y_res;
 486                 b = 255 - x * 255 / x_res;
 487             }
 488             else
 489             {
 490                 r = 255 - x * 255 / x_res;
 491                 g = y * 255 / y_res;
 492                 b = 255 - y * 255 / y_res;
 493             }
 494             vbeSetPixel(x, y, r, g, b);
 495         }
 496     }
 497 }
 498
 499 static void clear_screen( void )
 500 {
 501     int x_res = video_mode_info.XResolution;
 502     int y_res = video_mode_info.YResolution;
 503     int x, y;
 504
 505     for (y = 0; y < y_res; ++y)
 506         for (x = 0; x < x_res; ++x)
 507             vbeSetPixel(x, y, 0, 0, 0);
 508 }
 509
 510 static char *model2str(unsigned char type)
 511 {
 512   char *retval;
 513   switch(type)
 514   {
 515     case memText: retval = "Text"; break;
 516     case memCGA:  retval="CGA"; break;
 517     case memHercules: retval="Hercules"; break;
 518     case memPL: retval="Planar"; break;
 519     case memPK: retval="Packed pixel"; break;
 520     case mem256: retval="256"; break;
 521     case memRGB: retval="Direct color RGB"; break;
 522     case memYUV: retval="Direct color YUV"; break;
 523     default: retval="Unknown"; break;
 524   }
 525   return retval;
 526 }
 527
 528 unsigned fillMultiBuffer( unsigned long vsize, unsigned nbuffs )
 529 {
 530   unsigned long screen_size, offset;
 531   unsigned total,i;
 532   screen_size = video_mode_info.XResolution*video_mode_info.YResolution*((dstBpp+7)/8);
 533   if(screen_size%64) screen_size=((screen_size/64)*64)+64;
 534   total = vsize / screen_size;
 535   if( mp_msg_test(MSGT_VO,MSGL_V) )
 536     mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Can use up to %u video buffers\n",total);
 537   i = 0;
 538   offset = 0;
 539   total = min(total,nbuffs);
 540   while(i < total) { multi_buff[i++] = offset; offset += screen_size; }
 541   if(!i)
 542     mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_YouHaveTooLittleVideoMemory, screen_size, vsize);
 543   return i;
 544 }
 545
 546
 547 static int set_refresh(unsigned x, unsigned y, unsigned mode,struct VesaCRTCInfoBlock *crtc_pass)
 548 {
 549     unsigned pixclk;
 550     float H_freq;
 551
 552     range_t *monitor_hfreq = NULL;
 553     range_t *monitor_vfreq = NULL;
 554     range_t *monitor_dotclock = NULL;
 555
 556     monitor_hfreq = str2range(monitor_hfreq_str);
 557     monitor_vfreq = str2range(monitor_vfreq_str);
 558     monitor_dotclock = str2range(monitor_dotclock_str);
 559
 560                 if (!monitor_hfreq || !monitor_vfreq || !monitor_dotclock) {
 561                         mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_YouHaveToSpecifyTheCapabilitiesOfTheMonitor);
 562                         return 0;
 563                 }
 564
 565     H_freq = range_max(monitor_hfreq)/1000;
 566
 567 //    printf("H_freq MAX %f\n",H_freq);
 568
 569     do
 570     {
 571     H_freq -= 0.01;
 572     GTF_calcTimings(x,y,H_freq,GTF_HF,0, 0,crtc_pass);
 573 //    printf("PixelCLK %d\n",(unsigned)crtc_pass->PixelClock);
 574     }
 575     while ( (!in_range(monitor_vfreq,crtc_pass->RefreshRate/100)||
 576             !in_range(monitor_hfreq,H_freq*1000))&&(H_freq>0));
 577
 578     pixclk = crtc_pass->PixelClock;
 579 //    printf("PIXclk before %d\n",pixclk);
 580     vbeGetPixelClock(&mode,&pixclk);
 581 //    printf("PIXclk after %d\n",pixclk);
 582     GTF_calcTimings(x,y,pixclk/1000000,GTF_PF,0,0,crtc_pass);
 583 //    printf("Flags: %x\n",(unsigned) crtc_pass->Flags);
 584 /*
 585     printf("hTotal %d\n",crtc_pass->hTotal);
 586     printf("hSyncStart %d\n",crtc_pass->hSyncStart);
 587     printf("hSyncEnd %d\n",crtc_pass->hSyncEnd);
 588
 589     printf("vTotal %d\n",crtc_pass->vTotal);
 590     printf("vSyncStart %d\n",crtc_pass->vSyncStart);
 591     printf("vSyncEnd %d\n",crtc_pass->vSyncEnd);
 592
 593     printf("RR %d\n",crtc_pass->RefreshRate);
 594     printf("PixelCLK %d\n",(unsigned)crtc_pass->PixelClock);*/
 595
 596     if (!in_range(monitor_vfreq,crtc_pass->RefreshRate/100)||
 597         !in_range(monitor_hfreq,H_freq*1000)) {
 598         mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_UnableToFitTheMode);
 599         return 0;
 600     }
 601
 602     return 1;
 603 }
 604
 605 /* fullscreen:
 606  * bit 0 (0x01) means fullscreen (-fs)
 607  * bit 1 (0x02) means mode switching (-vm)
 608  * bit 2 (0x04) enables software scaling (-zoom)
 609  * bit 3 (0x08) enables flipping (-flip) (NK: and for what?)
 610  */
 611
 612 static int
 613 config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format)
 614 {
 615   static struct VbeInfoBlock vib;
 616   static int vib_set;
 617   struct VesaModeInfoBlock vmib;
 618   struct VesaCRTCInfoBlock crtc_pass;
 619   size_t i,num_modes;
 620   uint32_t w,h;
 621   unsigned short *mode_ptr,win_seg;
 622   unsigned bpp,best_x = UINT_MAX,best_y=UINT_MAX,best_mode_idx = UINT_MAX;
 623   int err,fs_mode,use_scaler=0;
 624         srcW = dstW = width;
 625         srcH = dstH = height;
 626         fs_mode = 0;
 627         if(subdev_flags == 0xFFFFFFFEUL)
 628         {
 629           mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_DetectedInternalFatalError);
 630           return -1;
 631         }
 632         if(subdev_flags == 0xFFFFFFFFUL) return -1;
 633         if(flags & VOFLAG_FLIPPING)
 634         {
 635           mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_SwitchFlipIsNotSupported);
 636         }
 637         if(flags & VOFLAG_SWSCALE) use_scaler = 1;
 638         if(flags & VOFLAG_FULLSCREEN)
 639         {
 640           if(use_scaler) use_scaler = 2;
 641           else          fs_mode = 1;
 642         }
 643         if((err=vbeInit()) != VBE_OK) { PRINT_VBE_ERR("vbeInit",err); return -1; }
 644         memcpy(vib.VESASignature,"VBE2",4);
 645         if(!vib_set && (err=vbeGetControllerInfo(&vib)) != VBE_OK)
 646         {
 647           PRINT_VBE_ERR("vbeGetControllerInfo",err);
 648           mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_PossibleReasonNoVbe2BiosFound);
 649           return -1;
 650         }
 651         vib_set = 1;
 652         /* Print general info here */
 653         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_FoundVesaVbeBiosVersion,
 654                 (int)(vib.VESAVersion >> 8) & 0xff,
 655                 (int)(vib.VESAVersion & 0xff),
 656                 (int)(vib.OemSoftwareRev & 0xffff));
 657         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_VideoMemory,vib.TotalMemory*64);
 658         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_Capabilites
 659                 ,vib.Capabilities & VBE_DAC_8BIT ? "8-bit DAC," : "6-bit DAC,"
 660                 ,vib.Capabilities & VBE_NONVGA_CRTC ? "non-VGA CRTC,":"VGA CRTC,"
 661                 ,vib.Capabilities & VBE_SNOWED_RAMDAC ? "snowed RAMDAC,":"normal RAMDAC,"
 662                 ,vib.Capabilities & VBE_STEREOSCOPIC ? "stereoscopic,":"no stereoscopic,"
 663                 ,vib.Capabilities & VBE_STEREO_EVC ? "Stereo EVC":"no stereo");
 664         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_BelowWillBePrintedOemInfo);
 665         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_YouShouldSee5OemRelatedLines);
 666         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OemInfo,vib.OemStringPtr);
 667         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OemRevision,vib.OemSoftwareRev);
 668         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OemVendor,vib.OemVendorNamePtr);
 669         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OemProductName,vib.OemProductNamePtr);
 670         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OemProductRev,vib.OemProductRevPtr);
 671         mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_Hint);
 672         /* Find best mode here */
 673         num_modes = 0;
 674         mode_ptr = vib.VideoModePtr;
 675         while(*mode_ptr++ != 0xffff) num_modes++;
 676         switch(format)
 677         {
 678                 case IMGFMT_BGR8:
 679                 case IMGFMT_RGB8:  bpp = 8; break;
 680                 case IMGFMT_BGR15:
 681                 case IMGFMT_RGB15: bpp = 15; break;
 682                 case IMGFMT_BGR16:
 683                 case IMGFMT_RGB16: bpp = 16; break;
 684                 case IMGFMT_BGR24:
 685                 case IMGFMT_RGB24: bpp = 24; break;
 686                 case IMGFMT_BGR32:
 687                 case IMGFMT_RGB32: bpp = 32; break;
 688                 default:           bpp = 16; break;
 689         }
 690         srcBpp = bpp;
 691         srcFourcc = format;
 692         if(vo_dbpp) bpp = vo_dbpp;
 693         switch(bpp)
 694         {
 695           case 15: draw_alpha_fnc = draw_alpha_15;
 696                    dstFourcc = IMGFMT_BGR15;
 697                    break;
 698           case 16: draw_alpha_fnc = draw_alpha_16;
 699                    dstFourcc = IMGFMT_BGR16;
 700                    break;
 701           case 24: draw_alpha_fnc = draw_alpha_24;
 702                    dstFourcc = IMGFMT_BGR24;
 703                    break;
 704           case 32: draw_alpha_fnc = draw_alpha_32;
 705                    dstFourcc = IMGFMT_BGR32;
 706                    break;
 707           default: draw_alpha_fnc = draw_alpha_null;
 708                    dstFourcc = IMGFMT_BGR16;
 709                    break;
 710         }
 711         if( mp_msg_test(MSGT_VO,MSGL_V) )
 712         {
 713           mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Requested mode: %ux%u@%u (%s)\n",width,height,bpp,vo_format_name(format));
 714           mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Total modes found: %u\n",num_modes);
 715           mode_ptr = vib.VideoModePtr;
 716           mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Mode list:");
 717           for(i = 0;i < num_modes;i++)
 718           {
 719             mp_msg(MSGT_VO,MSGL_V, " %04X",mode_ptr[i]);
 720           }
 721           mp_msg(MSGT_VO,MSGL_V, "\nvo_vesa: Modes in detail:\n");
 722         }
 723         mode_ptr = vib.VideoModePtr;
 724         if(use_scaler)
 725         {
 726             dstW = d_width;
 727             dstH = d_height;
 728         }
 729         if(vo_screenwidth) w = vo_screenwidth;
 730         else w = max(dstW,width);
 731         if(vo_screenheight) h = vo_screenheight;
 732         else h = max(dstH,height);
 733         for(i=0;i < num_modes;i++)
 734         {
 735                 if((err=vbeGetModeInfo(mode_ptr[i],&vmib)) != VBE_OK)
 736                 {
 737                         PRINT_VBE_ERR("vbeGetModeInfo",err);
 738                         continue;
 739                 }
 740                 if(vmib.XResolution >= w &&
 741                    vmib.YResolution >= h &&
 742                    (vmib.ModeAttributes & MOVIE_MODE) == MOVIE_MODE &&
 743                    vmib.BitsPerPixel == bpp &&
 744                    vmib.MemoryModel == memRGB)
 745                    {
 746                         if(vmib.XResolution <= best_x &&
 747                            vmib.YResolution <= best_y)
 748                            {
 749                                 best_x = vmib.XResolution;
 750                                 best_y = vmib.YResolution;
 751                                 best_mode_idx = i;
 752                            }
 753                    }
 754                 if( mp_msg_test(MSGT_VO,MSGL_V) )
 755                 {
 756                   mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Mode (%03u): mode=%04X %ux%u@%u attr=%04X\n"
 757                          "vo_vesa:             #planes=%u model=%u(%s) #pages=%u\n"
 758                          "vo_vesa:             winA=%X(attr=%u) winB=%X(attr=%u) winSize=%u winGran=%u\n"
 759                          "vo_vesa:             direct_color=%u DGA_phys_addr=%08lX\n"
 760                          ,i,mode_ptr[i],vmib.XResolution,vmib.YResolution,vmib.BitsPerPixel,vmib.ModeAttributes
 761                          ,vmib.NumberOfPlanes,vmib.MemoryModel,model2str(vmib.MemoryModel),vmib.NumberOfImagePages
 762                          ,vmib.WinASegment,vmib.WinAAttributes,vmib.WinBSegment,vmib.WinBAttributes,vmib.WinSize,vmib.WinGranularity
 763                          ,vmib.DirectColorModeInfo,vmib.PhysBasePtr);
 764                   if(vmib.MemoryModel == 6 || vmib.MemoryModel == 7)
 765                         mp_msg(MSGT_VO,MSGL_V, "vo_vesa:             direct_color_info = %u:%u:%u:%u\n"
 766                                 ,vmib.RedMaskSize,vmib.GreenMaskSize,vmib.BlueMaskSize,vmib.RsvdMaskSize);
 767                   fflush(stdout);
 768                 }
 769         }
 770         if(best_mode_idx != UINT_MAX)
 771         {
 772                 video_mode = vib.VideoModePtr[best_mode_idx];
 773                 fflush(stdout);
 774                 if((err=vbeGetMode(&init_mode)) != VBE_OK)
 775                 {
 776                         PRINT_VBE_ERR("vbeGetMode",err);
 777                         return -1;
 778                 }
 779                 if( mp_msg_test(MSGT_VO,MSGL_V) ) {
 780                         mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Initial video mode: %x\n",init_mode); }
 781                 if((err=vbeGetModeInfo(video_mode,&video_mode_info)) != VBE_OK)
 782                 {
 783                         PRINT_VBE_ERR("vbeGetModeInfo",err);
 784                         return -1;
 785                 }
 786                 dstBpp = video_mode_info.BitsPerPixel;
 787                 mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_UsingVesaMode
 788                         ,best_mode_idx,video_mode,video_mode_info.XResolution
 789                         ,video_mode_info.YResolution,dstBpp);
 790                 if(subdev_flags & SUBDEV_NODGA) video_mode_info.PhysBasePtr = 0;
 791                 if(use_scaler || fs_mode)
 792                 {
 793                       /* software scale */
 794                       if(use_scaler > 1
 795 #ifdef CONFIG_VIDIX
 796                                 || vidix_name
 797 #endif
 798                           )
 799                       {
 800                         aspect_save_orig(width,height);
 801                         aspect_save_prescale(d_width,d_height);
 802                         aspect_save_screenres(video_mode_info.XResolution,video_mode_info.YResolution);
 803                         aspect(&dstW,&dstH,A_ZOOM);
 804                       }
 805                       else
 806                       if(fs_mode)
 807                       {
 808                         dstW = video_mode_info.XResolution;
 809                         dstH = video_mode_info.YResolution;
 810                       }
 811                       use_scaler = 1;
 812                 }
 813                 if(!lvo_name
 814 #ifdef CONFIG_VIDIX
 815                 && !vidix_name
 816 #endif
 817                 )
 818                 {
 819                     sws = sws_getContextFromCmdLine(srcW,srcH,srcFourcc,dstW,dstH,dstFourcc);
 820                     if(!sws)
 821                     {
 822                         mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_CantInitializeSwscaler);
 823                         return -1;
 824                     }
 825                     else if( mp_msg_test(MSGT_VO,MSGL_V) ) {
 826                         mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Using SW BES emulator\n"); }
 827                 }
 828                 if((video_mode_info.WinAAttributes & FRAME_MODE) == FRAME_MODE)
 829                    win.idx = 0; /* frame A */
 830                 else
 831                 if((video_mode_info.WinBAttributes & FRAME_MODE) == FRAME_MODE)
 832                    win.idx = 1; /* frame B */
 833                 else win.idx = -2;
 834                 /* Try use DGA instead */
 835                 if(video_mode_info.PhysBasePtr && vib.TotalMemory && (video_mode_info.ModeAttributes & MODE_ATTR_LINEAR))
 836                 {
 837                     void *lfb;
 838                     unsigned long vsize;
 839                     vsize = vib.TotalMemory*64*1024;
 840                     lfb = vbeMapVideoBuffer(video_mode_info.PhysBasePtr,vsize);
 841                     if(lfb == NULL)
 842                       mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_CantUseDga);
 843                     else
 844                     {
 845                       video_base = win.ptr = lfb;
 846                       win.low = 0UL;
 847                       win.high = vsize;
 848                       win.idx = -1; /* HAS_DGA() is on */
 849                       video_mode |= VESA_MODE_USE_LINEAR;
 850                       mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_UsingDga
 851                              ,video_mode_info.PhysBasePtr
 852                              ,vsize);
 853                       if( mp_msg_test(MSGT_VO,MSGL_V) ) {
 854                         printf(" at %08lXh",(unsigned long)lfb); }
 855                       printf("\n");
 856                       if(!(multi_size = fillMultiBuffer(vsize,2))) return -1;
 857                       if(vo_doublebuffering && multi_size < 2)
 858                         mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_CantUseDoubleBuffering);
 859                     }
 860                 }
 861                 if(win.idx == -2)
 862                 {
 863                    mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantFindNeitherDga);
 864                    return -1;
 865                 }
 866                 if(!HAS_DGA())
 867                 {
 868                   if(subdev_flags & SUBDEV_FORCEDGA)
 869                   {
 870                         mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_YouveForcedDga);
 871                         return -1;
 872                   }
 873                   if(!(win_seg = win.idx == 0 ? video_mode_info.WinASegment:video_mode_info.WinBSegment))
 874                   {
 875                     mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantFindValidWindowAddress);
 876                     return -1;
 877                   }
 878                   win.ptr = PhysToVirtSO(win_seg,0);
 879                   win.low = 0L;
 880                   win.high= video_mode_info.WinSize*1024;
 881                   mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_UsingBankSwitchingMode
 882                          ,(unsigned long)win.ptr,(unsigned long)win.high);
 883                 }
 884                 if(video_mode_info.XResolution > dstW)
 885                     x_offset = (video_mode_info.XResolution - dstW) / 2;
 886                 else x_offset = 0;
 887                 if(video_mode_info.YResolution > dstH)
 888                     y_offset = (video_mode_info.YResolution - dstH) / 2;
 889                 else y_offset = 0;
 890                 if( mp_msg_test(MSGT_VO,MSGL_V) )
 891                   mp_msg(MSGT_VO,MSGL_V, "vo_vesa: image: %ux%u screen = %ux%u x_offset = %u y_offset = %u\n"
 892                         ,dstW,dstH
 893                         ,video_mode_info.XResolution,video_mode_info.YResolution
 894                         ,x_offset,y_offset);
 895                 if(HAS_DGA())
 896                 {
 897                   dga_buffer = win.ptr; /* Trickly ;) */
 898                   cpy_blk_fnc = vbeCopyBlockFast;
 899                 }
 900                 else
 901                 {
 902                   cpy_blk_fnc = vbeCopyBlock;
 903                   if(!lvo_name
 904 #ifdef CONFIG_VIDIX
 905                    && !vidix_name
 906 #endif
 907                   )
 908                   {
 909                     if(!(dga_buffer = memalign(64,video_mode_info.XResolution*video_mode_info.YResolution*dstBpp)))
 910                     {
 911                       mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantAllocateTemporaryBuffer);
 912                       return -1;
 913                     }
 914                     if( mp_msg_test(MSGT_VO,MSGL_V) ) {
 915                         mp_msg(MSGT_VO,MSGL_V, "vo_vesa: dga emulator was allocated = %p\n",dga_buffer); }
 916                   }
 917                 }
 918                 if((err=vbeSaveState(&init_state)) != VBE_OK)
 919                 {
 920                         PRINT_VBE_ERR("vbeSaveState",err);
 921                 }
 922
 923                 /* TODO:
 924                          user might pass refresh value,
 925                          GTF constants might be read from monitor
 926                          for best results, I don't have a spec (RM)
 927                 */
 928
 929                 if (((int)(vib.VESAVersion >> 8) & 0xff) > 2) {
 930
 931                 if (set_refresh(video_mode_info.XResolution,video_mode_info.YResolution,video_mode,&crtc_pass))
 932                 video_mode = video_mode | 0x800;
 933
 934                 }
 935
 936                 ;
 937
 938                 if ((err=vbeSetMode(video_mode,&crtc_pass)) != VBE_OK)
 939                 {
 940                         PRINT_VBE_ERR("vbeSetMode",err);
 941                         return -1;
 942                 }
 943
 944                 if (neomagic_tvout) {
 945                     err = vbeSetTV(video_mode,neomagic_tvnorm);
 946                     if (err!=0x4f) {
 947                     mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_VESA_SorryUnsupportedMode);
 948                     }
 949                     else {
 950                     mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_OhYouReallyHavePictureOnTv);
 951                     }
 952                 }
 953                 /* Now we are in video mode!!!*/
 954                 /* Below 'return -1' is impossible */
 955                 if( mp_msg_test(MSGT_VO,MSGL_V) )
 956                 {
 957                   mp_msg(MSGT_VO,MSGL_V, "vo_vesa: Graphics mode was activated\n");
 958                   fflush(stdout);
 959                 }
 960                 if(lvo_name)
 961                 {
 962                   if(vlvo_init(width,height,x_offset,y_offset,dstW,dstH,format,dstBpp) != 0)
 963                   {
 964                     mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantInitialozeLinuxVideoOverlay);
 965                     vesa_term();
 966                     return -1;
 967                   }
 968                   else mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_UsingVideoOverlay,lvo_name);
 969                   lvo_opened = 1;
 970                 }
 971 #ifdef CONFIG_VIDIX
 972                 else
 973                 if(vidix_name)
 974                 {
 975                   if(vidix_init(width,height,x_offset,y_offset,dstW,
 976                                 dstH,format,dstBpp,
 977                                 video_mode_info.XResolution,video_mode_info.YResolution) != 0)
 978                   {
 979                     mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantInitializeVidixDriver);
 980                     vesa_term();
 981                     return -1;
 982                   }
 983                   else mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_UsingVidix);
 984                   vidix_start();
 985
 986                   /* set colorkey */
 987                   if (vidix_grkey_support())
 988                   {
 989                     vidix_grkey_get(&gr_key);
 990                     gr_key.key_op = KEYS_PUT;
 991 #if 0
 992                     if (!(vo_colorkey & 0xFF000000))
 993                     {
 994                         gr_key.ckey.op = CKEY_TRUE;
 995                         gr_key.ckey.red = (vo_colorkey & 0x00FF0000) >> 16;
 996                         gr_key.ckey.green = (vo_colorkey & 0x0000FF00) >> 8;
 997                         gr_key.ckey.blue = vo_colorkey & 0x000000FF;
 998                     } else
 999 #endif
1000                         gr_key.ckey.op = CKEY_FALSE;
1001                     vidix_grkey_set(&gr_key);
1002                   }
1003                   vidix_opened = 1;
1004                 }
1005 #endif
1006         }
1007         else
1008         {
1009           mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_VESA_CantFindModeFor,width,height,bpp);
1010           return -1;
1011         }
1012         if( mp_msg_test(MSGT_VO,MSGL_V) )
1013         {
1014           mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_VESA_InitializationComplete);
1015           fflush(stdout);
1016         }
1017         if(HAS_DGA() && vo_doublebuffering)
1018         {
1019             if (VBE_OK != vbeSetDisplayStart(0, vo_vsync))
1020             {
1021               mp_msg(MSGT_VO,MSGL_WARN, "[VO_VESA] Can't use double buffering: changing displays failed.\n");
1022               multi_size = 1;
1023             }
1024             for(i=0;i<multi_size;i++)
1025             {
1026                 win.ptr = dga_buffer = video_base + multi_buff[i];
1027                 clear_screen(); /* Clear screen for stupid BIOSes */
1028                 if( mp_msg_test(MSGT_VO,MSGL_DBG2) ) paintBkGnd();
1029             }
1030         }
1031         else
1032         {
1033             clear_screen();     /* Clear screen for stupid BIOSes */
1034             if( mp_msg_test(MSGT_VO,MSGL_DBG2) )
1035             {
1036                 int x;
1037                 x = (video_mode_info.XResolution/video_mode_info.XCharSize)/2-strlen(title)/2;
1038                 if(x < 0) x = 0;
1039                 paintBkGnd();
1040                 vbeWriteString(x,0,7,title);
1041             }
1042         }
1043         return 0;
1044 }
1045
1046 static void
1047 uninit(void)
1048 {
1049     // not initialized
1050     vesa_term();
1051     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
1052         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: uninit was called\n");
1053 }
1054
1055
1056 static void check_events(void)
1057 {
1058     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
1059         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: check_events was called\n");
1060 /* Nothing to do */
1061 }
1062
1063 static int preinit(const char *arg)
1064 {
1065   int pre_init_err = 0;
1066   int fd;
1067   if( mp_msg_test(MSGT_VO,MSGL_DBG2) )
1068         mp_msg(MSGT_VO,MSGL_DBG2, "vo_vesa: preinit(%s) was called\n",arg);
1069   if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
1070         mp_msg(MSGT_VO,MSGL_DBG3, "vo_vesa: subdevice %s is being initialized\n",arg);
1071   subdev_flags = 0;
1072   lvo_name = NULL;
1073 #ifdef CONFIG_VIDIX
1074   vidix_name = NULL;
1075 #endif
1076   if(arg) subdev_flags = parseSubDevice(arg);
1077   if(lvo_name) pre_init_err = vlvo_preinit(lvo_name);
1078 #ifdef CONFIG_VIDIX
1079   else if(vidix_name) pre_init_err = vidix_preinit(vidix_name,
1080                                                 video_out_vesa.old_functions);
1081 #endif
1082   // check if we can open /dev/mem (it will be opened later in config(), but if we
1083   // detect now that we can't we can exit cleanly)
1084   fd = open("/dev/mem", O_RDWR);
1085   if (fd < 0)
1086         return -1;
1087   else
1088         close(fd);
1089   if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
1090         mp_msg(MSGT_VO,MSGL_DBG3, "vo_subdevice: initialization returns: %i\n",pre_init_err);
1091   return pre_init_err;
1092 }
1093
1094 static int control(uint32_t request, void *data)
1095 {
1096   switch (request) {
1097   case VOCTRL_QUERY_FORMAT:
1098     return query_format(*((uint32_t*)data));
1099   }
1100
1101 #ifdef CONFIG_VIDIX
1102   if (vidix_name)
1103     return vidix_control(request, data);
1104 #endif
1105
1106   return VO_NOTIMPL;
1107 }