libvo/vo_svga.c

   1 /*
   2  * video driver for SVGAlib
   3  * by Zoltan Mark Vician <se7en@sch.bme.hu>
   4  * Code started: Mon Apr  1 23:25:47 2001
   5  * Some changes by Matan Ziv-Av <matan@svgalib.org>
   6  * complete rewrite by Ivan Kalvachev 19 Mar 2003
   7  *
   8  * This file is part of MPlayer.
   9  *
  10  * MPlayer is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * MPlayer is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  23  */
  24
  25 /*
  26 Wrangings:
  27  -  1bpp doesn't work right for me with '-double' and svgalib 1.4.3,
  28     but works OK with svgalib 1.9.17
  29  -  The HW acceleration is not tested - svgalibs supports few chipsets,
  30     and i don't have any of them. If it works for you then let me know.
  31     I will remove this warning after confirm its status.
  32  -  retrace sync works only in doublebuffer mode.
  33  -  the retrace sync may slow down decoding a lot - mplayer is blocked while
  34     waiting for retrace
  35  -  denoise3d fails to find common colorspace, use -vf denoise3d,scale
  36
  37 TODO:
  38  - let choose_best_mode take aspect into account
  39  - set palette from mpi->palette or mpi->plane[1]
  40  - make faster OSD black bars clear - need some OSD changes
  41  - Make nicer CONFIG parsing
  42  - change video mode logical width to match img->stride[0] - for HW only
  43 */
  44
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48
  49 #include <vga.h>
  50
  51 #include <limits.h>
  52
  53 #include "config.h"
  54 #include "video_out.h"
  55 #include "video_out_internal.h"
  56 #include "fastmemcpy.h"
  57 #include "osdep/getch2.h"
  58 #ifdef CONFIG_VIDIX
  59 #include "vosub_vidix.h"
  60 #endif
  61
  62 #include "sub.h"
  63
  64 #include "mp_msg.h"
  65 #include "help_mp.h"
  66 //#include "mp_image.h"
  67
  68 #include <assert.h>
  69
  70 //silence warnings, probably it have to go in some global header
  71 #define UNUSED(x) ((void)(x))
  72
  73
  74 static void draw_alpha(int x0, int y0, int w, int h, unsigned char *src,
  75                        unsigned char *srca, int stride);
  76 static uint32_t get_image(mp_image_t *mpi);
  77
  78 #define MAXPAGES 16
  79 #define PAGE_EMPTY 0
  80 #define PAGE_BUSY 1
  81
  82 #define CAP_ACCEL_CLEAR 8
  83 #define CAP_ACCEL_PUTIMAGE 4
  84 #define CAP_ACCEL_BACKGR 2
  85 #define CAP_LINEAR 1
  86
  87 static uint8_t zerobuf[8192];//used when clear screen with vga_draw
  88
  89 static int squarepix;
  90 static int force_vm=0;
  91 static int force_native=0;
  92 static int sync_flip=0;
  93 static int blackbar_osd=0;
  94 static int cpage,max_pages,old_page;
  95
  96 static vga_modeinfo * modeinfo;
  97 static int mode_stride; //keep it in case of vga_setlogicalwidth
  98 static int stride_granularity; //not yet used
  99 static int mode_bpp;
 100 static int mode_capabilities;
 101
 102 static int image_width,image_height; // used by OSD
 103 static int x_pos, y_pos;
 104
 105 static struct {
 106   int yoffset;//y position of the page
 107   int doffset;//display start of the page
 108   uint8_t * vbase;//memory start address of the page
 109   int locks;
 110 }PageStore[MAXPAGES];
 111
 112 static const vo_info_t info = {
 113     "SVGAlib",
 114     "svga",
 115     "Ivan Kalvachev <iive@users.sf.net>",
 116     ""
 117 };
 118
 119 #ifdef CONFIG_VIDIX
 120 static char vidix_name[32] = "";
 121 static vidix_grkey_t gr_key;
 122 #endif
 123
 124 LIBVO_EXTERN(svga)
 125
 126
 127 //return number of 1'st free page or -1 if no free one
 128 static inline int page_find_free(void){
 129 int i;
 130   for(i=0;i<max_pages;i++)
 131     if(PageStore[i].locks == PAGE_EMPTY) return i;
 132   return -1;
 133 }
 134
 135 static int preinit(const char *arg)
 136 {
 137 int i,rez;
 138 char s[64];
 139
 140   getch2_disable();
 141   memset(zerobuf,0,sizeof(zerobuf));
 142   force_vm=force_native=squarepix=0;
 143   sync_flip=vo_vsync;
 144   blackbar_osd=0;
 145
 146   if(arg)while(*arg) {
 147 #ifdef CONFIG_VIDIX
 148     if(memcmp(arg,"vidix",5)==0) {
 149       i=6;
 150       while(arg[i] && arg[i]!=':') i++;
 151       strncpy(vidix_name, arg+6, i-6);
 152       vidix_name[i-5]=0;
 153       if(arg[i]==':')i++;
 154       arg+=i;
 155       vidix_preinit(vidix_name, video_out_svga.old_functions);
 156     }
 157 #endif
 158     if(!strncmp(arg,"sq",2)) {
 159       squarepix=1;
 160       arg+=2;
 161       if( *arg == ':' ) arg++;
 162     }
 163
 164     if(!strncmp(arg,"native",6)) {
 165       force_native=1;
 166       arg+=6;
 167       if( *arg == ':' ) arg++;
 168     }
 169
 170     if(!strncmp(arg,"bbosd",5)) {
 171       blackbar_osd=1;
 172       arg+=5;
 173       if( *arg == ':' ) arg++;
 174     }
 175
 176     if(!strncmp(arg,"retrace",7)) {
 177       sync_flip=1;
 178       arg+=7;
 179       if( *arg == ':' ) arg++;
 180     }
 181
 182     if(*arg) {
 183       i=0;
 184       while(arg[i] && arg[i]!=':')i++;
 185       if(i<64){
 186         strncpy(s, arg, i);
 187         s[i]=0;
 188
 189         force_vm=vga_getmodenumber(s);
 190         if(force_vm>0) {
 191           if( mp_msg_test(MSGT_VO,MSGL_V) ) mp_msg(MSGT_VO,MSGL_V, "vo_svga: Forcing mode %i\n",force_vm);
 192         }else{
 193           force_vm = 0;
 194         }
 195       }
 196       arg+=i;
 197       if(*arg==':')arg++;
 198     }
 199   }
 200
 201   rez = vga_init();
 202   if(rez != 0){
 203       mp_msg(MSGT_VO,MSGL_ERR, "vo_svga: vga_init() returned error=%d\n",rez);
 204   }
 205   return !!rez;
 206 }
 207
 208 static void svga_clear_box(int x,int y,int w,int h){
 209 uint8_t * rgbplane;
 210 int i;
 211
 212   if (mode_capabilities&CAP_ACCEL_CLEAR){
 213     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 214       mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: clearing box %d,%d - %d,%d with HW acceleration\n",
 215              x,y,w,h);
 216     if(mode_capabilities&CAP_ACCEL_BACKGR)
 217       vga_accel(ACCEL_SYNC);
 218     vga_accel(ACCEL_SETFGCOLOR,0);//black
 219     vga_accel(ACCEL_FILLBOX,x,y,w,h);
 220     return;
 221   }
 222   if (mode_capabilities & CAP_LINEAR){
 223     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 224       mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: clearing box %d,%d - %d,%d with memset\n",x,y,w,h);
 225     rgbplane=PageStore[0].vbase + (y*mode_stride) + (x*modeinfo->bytesperpixel);
 226     for(i=0;i<h;i++){
 227 //i'm afraid that memcpy is better optimized than memset;)
 228       fast_memcpy(rgbplane,zerobuf,w*modeinfo->bytesperpixel);
 229 //    memset(rgbplane,0,w*modeinfo->bytesperpixel);
 230       rgbplane+=mode_stride;
 231     }
 232     return;
 233   }
 234   //native
 235   if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 236     mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: clearing box %d,%d - %d,%d with native draw \n",x,y,w,h);
 237   if(modeinfo->bytesperpixel!=0) w*=modeinfo->bytesperpixel;
 238   for(i=0;i<h;i++){
 239     vga_drawscansegment(zerobuf,x,y+i,w);
 240   }
 241 };
 242
 243 static uint32_t svga_draw_image(mp_image_t *mpi){
 244 int i,x,y,w,h;
 245 int stride;
 246 uint8_t *rgbplane, *base;
 247 int bytesperline;
 248 int page;
 249
 250   if(mpi->flags & MP_IMGFLAG_DIRECT){
 251     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 252       mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: drawing direct rendered surface\n");
 253     cpage=(uint32_t)mpi->priv;
 254     assert((cpage>=0)&&(cpage<max_pages));
 255     return VO_TRUE; //it's already done
 256   }
 257 //  if (mpi->flags&MP_IMGFLAGS_DRAWBACK)
 258 //  return VO_TRUE;//direct render method 2
 259
 260 //find a free page to draw into
 261 //if there is no one then use the current one
 262   page = page_find_free();
 263   if(page>=0) cpage=page;
 264   PageStore[cpage].locks=PAGE_BUSY;
 265
 266 // these variables are used in loops
 267   x = mpi->x;
 268   y = mpi->y;
 269   w = mpi->w;
 270   h = mpi->h;
 271   stride = mpi->stride[0];
 272   rgbplane = mpi->planes[0] + y*stride + (x*mpi->bpp)/8;
 273   x+=x_pos;//center
 274   y+=y_pos;
 275
 276   if(mpi->bpp >= 8){//for modes<8 use only native
 277     if( (mode_capabilities&CAP_ACCEL_PUTIMAGE) && (x==0) && (w==mpi->width) &&
 278         (stride == mode_stride) ){ //only monolite image can be accelerated
 279       w=(stride*8)/mpi->bpp;//we transfer pixels in the stride so the source
 280 //ACCELERATE
 281       if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 282         mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: using HW PutImage (x=%d,y=%d,w=%d,h=%d)\n",x,y,w,h);
 283       if(mode_capabilities & CAP_ACCEL_BACKGR)
 284         vga_accel(ACCEL_SYNC);
 285
 286       vga_accel(ACCEL_PUTIMAGE,x,y+PageStore[cpage].yoffset,w,h,rgbplane);
 287       return VO_TRUE;
 288     }
 289
 290     if( mode_capabilities&CAP_LINEAR){
 291 //DIRECT
 292       if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 293         mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: using Direct memcpy (x=%d,y=%d,w=%d,h=%d)\n",x,y,w,h);
 294       bytesperline=(w*mpi->bpp)/8;
 295       base=PageStore[cpage].vbase + (y*mode_stride) + (x*mpi->bpp)/8;
 296
 297       for(i=0;i<h;i++){
 298         mem2agpcpy(base,rgbplane,bytesperline);
 299         base+=mode_stride;
 300         rgbplane+=stride;
 301       }
 302       return VO_TRUE;
 303     }
 304   }//(modebpp>=8
 305
 306
 307 //NATIVE
 308   {
 309   int length;
 310     length=(w*mpi->bpp)/8;
 311   //one byte per pixel! svgalib innovation
 312     if(mpi->imgfmt==IMGFMT_RG4B || mpi->imgfmt==IMGFMT_BG4B) length=w;
 313
 314     if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 315       mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: using Native vga_draw(x=%d,y=%d,w=%d,h=%d)\n",x,y,w,h);
 316     y+=PageStore[cpage].yoffset;//y position of the page beggining
 317     for(i=0;i<h;i++){
 318       vga_drawscansegment(rgbplane,x,y+i,length);
 319       rgbplane+=stride;
 320     }
 321   }
 322   return VO_TRUE;
 323 }
 324
 325 static int bpp_from_vminfo(vga_modeinfo *vminfo){
 326   switch(vminfo->colors){
 327     case 2: return 1;
 328     case 16: return 4;
 329     case 256: return 8;
 330     case 32768: return 15;
 331     case 65536: return 16;
 332     case 1<<24: return 8*vminfo->bytesperpixel;
 333   }
 334   return 0;
 335 }
 336
 337 static int find_best_svga_mode(int req_w,int req_h, int req_bpp){
 338  int badness,prev_badness;
 339  int bestmode,lastmode;
 340  int i;
 341  vga_modeinfo *vminfo;
 342 //int best aspect mode // best linear mode // best normal mode (no modeX)
 343
 344   prev_badness = 0;//take care of special case below
 345   bestmode = 0; //0 is the TEXT mode
 346   lastmode = vga_lastmodenumber();
 347   for(i=1;i<=lastmode;i++){
 348     vminfo = vga_getmodeinfo(i);
 349     if( vminfo == NULL ) continue;
 350     if( mp_msg_test(MSGT_VO,MSGL_DBG4) )
 351       mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: testing mode %d (%s)\n",i,vga_getmodename(i));
 352     if( vga_hasmode(i) == 0 ) continue;
 353     if( req_bpp != bpp_from_vminfo(vminfo) )continue;
 354     if( (vminfo->width < req_w) || (vminfo->height < req_h) ) continue;
 355     badness=(vminfo->width * vminfo->height) - (req_h * req_w);
 356     //put here aspect calculations
 357     if(squarepix)
 358       if( vminfo->width*3 != vminfo->height*4 ) continue;
 359
 360     if( bestmode==0 || prev_badness >= badness ){//modeX etc...
 361       prev_badness=badness;
 362       bestmode=i;
 363       if( mp_msg_test(MSGT_VO,MSGL_DBG4) )
 364         mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: found good mode %d with badness %d\n",i,badness);
 365     }
 366   }
 367   return bestmode;
 368 }
 369
 370 static int control(uint32_t request, void *data)
 371 {
 372   switch (request) {
 373     case VOCTRL_QUERY_FORMAT:
 374       return query_format(*((uint32_t*)data));
 375     case VOCTRL_DRAW_IMAGE:
 376       return svga_draw_image( (mp_image_t *)data);
 377     case VOCTRL_GET_IMAGE:
 378       return get_image(data);
 379   }
 380
 381 #ifdef CONFIG_VIDIX
 382   if (vidix_name[0])
 383     return vidix_control(request, data);
 384 #endif
 385
 386   return VO_NOTIMPL;
 387 }
 388
 389 //
 390 // This function is called to init the video driver for specific mode
 391 //
 392 static int config(uint32_t width, uint32_t height, uint32_t d_width,
 393                        uint32_t d_height, uint32_t flags, char *title,
 394                        uint32_t format) {
 395   int32_t req_w = width;// (d_width > 0 ? d_width : width);
 396   int32_t req_h = height;// (d_height > 0 ? d_height : height);
 397   uint16_t vid_mode = 0;
 398   int32_t req_bpp;
 399
 400   uint32_t accflags;
 401   if( mp_msg_test(MSGT_VO,MSGL_V) )
 402     mp_msg(MSGT_VO,MSGL_V, "vo_svga: config(%i, %i, %i, %i, %08x, %s, %08x)\n", width, height,
 403            d_width, d_height, flags, title, format);
 404 //Only RGB modes supported
 405   if (!IMGFMT_IS_RGB(format) && !IMGFMT_IS_BGR(format)) {assert(0);return -1;}
 406   req_bpp = IMGFMT_BGR_DEPTH(format);
 407
 408   if( vo_dbpp!=0 && vo_dbpp!=req_bpp) {assert(0);return-1;}
 409
 410   if(!force_vm) {
 411     if ( mp_msg_test(MSGT_VO,MSGL_V) ) {
 412       mp_msg(MSGT_VO,MSGL_V, "vo_svga: Looking for the best resolution...\n");
 413       mp_msg(MSGT_VO,MSGL_V, "vo_svga: req_w: %d, req_h: %d, bpp: %d\n",req_w,req_h,req_bpp);
 414     }
 415     vid_mode=find_best_svga_mode(req_w,req_h,req_bpp);
 416     if(vid_mode==0)
 417       return 1;
 418     modeinfo=vga_getmodeinfo(vid_mode);
 419   }else{//force_vm
 420     vid_mode=force_vm;
 421     if(vga_hasmode(vid_mode) == 0){
 422       mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_SVGA_ForcedVidmodeNotAvailable,
 423              vid_mode,vga_getmodename(vid_mode));
 424       return 1; //error;
 425     }
 426     modeinfo=vga_getmodeinfo(vid_mode);
 427     if( (modeinfo->width < req_w) || (modeinfo->height < req_h) ){
 428       mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_SVGA_ForcedVidmodeTooSmall,
 429              vid_mode,vga_getmodename(vid_mode));
 430       return 1;
 431     }
 432   }
 433   mode_bpp=bpp_from_vminfo(modeinfo);
 434
 435   mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_SVGA_Vidmode,
 436          vid_mode,modeinfo->width,modeinfo->height,mode_bpp);
 437
 438   if (vga_setmode(vid_mode) == -1) {
 439     mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_SVGA_VgasetmodeFailed,vid_mode);
 440     uninit();
 441     return 1; // error
 442   }
 443   /* set 332 palette for 8 bpp */
 444   if(mode_bpp==8){
 445     int i;
 446     for(i=0; i<256; i++)
 447       vga_setpalette(i, ((i>>5)&7)*9, ((i>>2)&7)*9, (i&3)*21);
 448   }
 449   /* set 121 palette for 4 bpp */
 450   else if(mode_bpp==4){
 451     int i;
 452     for(i=0; i<16; i++)
 453       vga_setpalette(i, ((i>>3)&1)*63, ((i>>1)&3)*21, (i&1)*63);
 454   }
 455   //if we change the logical width, we should know the granularity
 456   stride_granularity=8;//according to man vga_logicalwidth
 457   if(modeinfo->flags & EXT_INFO_AVAILABLE){
 458      stride_granularity=modeinfo->linewidth_unit;
 459   }
 460   //look for hardware acceleration
 461   mode_capabilities=0;//NATIVE;
 462   if(!force_native){//if we want to use only native drawers
 463     if(modeinfo->flags & HAVE_EXT_SET){//support for hwaccel interface
 464       accflags=vga_ext_set(VGA_EXT_AVAILABLE,VGA_AVAIL_ACCEL);
 465       if(accflags & ACCELFLAG_FILLBOX) // clear screen
 466         mode_capabilities|=CAP_ACCEL_CLEAR;
 467       if(accflags & ACCELFLAG_PUTIMAGE)//support for mem->vid transfer
 468         mode_capabilities|=CAP_ACCEL_PUTIMAGE;
 469       if((accflags & ACCELFLAG_SETMODE) && (accflags & ACCELFLAG_SYNC)){
 470         vga_accel(ACCEL_SETMODE,BLITS_IN_BACKGROUND);
 471         mode_capabilities|=CAP_ACCEL_BACKGR;//can draw in backgraund
 472       }
 473     }
 474     if(modeinfo->flags & IS_LINEAR){
 475       mode_capabilities|=CAP_LINEAR; //don't use bank & vga_draw
 476     }
 477     else{
 478       if(modeinfo->flags & CAPABLE_LINEAR){
 479         int vid_mem_size;
 480         vid_mem_size = vga_setlinearaddressing();
 481         if(vid_mem_size != -1){
 482           modeinfo=vga_getmodeinfo(vid_mode);//sometimes they change parameters
 483           mode_capabilities|=CAP_LINEAR;
 484         }
 485       }
 486     }
 487   }//fi force native
 488   if(mode_capabilities&CAP_LINEAR){
 489     mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_SVGA_VideoModeIsLinearAndMemcpyCouldBeUsed);
 490   }
 491   if(mode_capabilities&CAP_ACCEL_PUTIMAGE){
 492     mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_SVGA_VideoModeHasHardwareAcceleration);
 493     mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_SVGA_IfItWorksForYouIWouldLikeToKnow);
 494   }
 495
 496 //here is the place to handle strides for accel_ modes;
 497   mode_stride=modeinfo->linewidth;
 498 //we may try to set a bigger stride for video mode that will match the mpi->stride,
 499 //this way we will transfer more data, but HW put_image can do it in backgraund!
 500
 501 //now let's see how many pages we can use
 502   max_pages = modeinfo->maxpixels/(modeinfo->height * modeinfo->width);
 503   if(max_pages > MAXPAGES) max_pages = MAXPAGES;
 504   if(!vo_doublebuffering) max_pages=1;
 505 //fill PageStore structs
 506   {
 507   int i;
 508   uint8_t * GRAPH_MEM;
 509   int dof;
 510     GRAPH_MEM=vga_getgraphmem();
 511     for(i=0;i<max_pages;i++){
 512     //calculate display offset
 513       dof = i * modeinfo->height * modeinfo->width;
 514       if(modeinfo->bytesperpixel != 0) dof*=modeinfo->bytesperpixel;
 515     //check video chip limitations
 516       if( dof != (dof & modeinfo->startaddressrange) ){
 517         max_pages=i;//page 0 will never come here
 518         break;
 519       }
 520       PageStore[i].yoffset = i * modeinfo->height;//starting y offset
 521       PageStore[i].vbase = GRAPH_MEM + i*modeinfo->height*mode_stride; //memory base address
 522       PageStore[i].doffset = dof; //display offset
 523       PageStore[i].locks = PAGE_EMPTY;
 524     }
 525   }
 526   assert(max_pages>0);
 527   mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_SVGA_VideoModeHas,max_pages);
 528   //15bpp
 529   if(modeinfo->bytesperpixel!=0)
 530     vga_claimvideomemory(max_pages * modeinfo->height * modeinfo->width * modeinfo->bytesperpixel);
 531   else
 532     vga_claimvideomemory(max_pages * modeinfo->height * modeinfo->width * mode_bpp / 8);
 533
 534   cpage=old_page=0;
 535   svga_clear_box(0,0,modeinfo->width,modeinfo->height * max_pages);
 536
 537   image_height=req_h;
 538   image_width=req_w;
 539   x_pos = (modeinfo->width  - req_w) / 2;
 540   y_pos = (modeinfo->height - req_h) / 2;
 541   x_pos &= ~(15); //align x offset position to 16 pixels
 542   mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_SVGA_CenteringImageStartAt,x_pos,y_pos);
 543
 544 #ifdef CONFIG_VIDIX
 545
 546   if(vidix_name[0]){
 547     vidix_init(width, height, x_pos, y_pos, modeinfo->width, modeinfo->height,
 548         format, mode_bpp, modeinfo->width,modeinfo->height);
 549     mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_SVGA_UsingVidix,width,height,
 550            modeinfo->width,modeinfo->height);
 551     vidix_start();
 552     /*set colorkey*/
 553     if(vidix_grkey_support()){
 554       vidix_grkey_get(&gr_key);
 555       gr_key.key_op = KEYS_PUT;
 556       if (!(vo_colorkey & 0xFF000000)) {
 557         gr_key.ckey.op = CKEY_TRUE;
 558         gr_key.ckey.red = (vo_colorkey & 0x00FF0000) >> 16;
 559         gr_key.ckey.green = (vo_colorkey & 0x0000FF00) >> 8;
 560         gr_key.ckey.blue = vo_colorkey & 0x000000FF;
 561       } else
 562         gr_key.ckey.op = CKEY_FALSE;
 563       vidix_grkey_set(&gr_key);
 564     }
 565   }
 566 #endif
 567
 568   vga_setdisplaystart(0);
 569   return 0;
 570 }
 571
 572 static int draw_slice(uint8_t *image[],int stride[],
 573                int w, int h, int x, int y) {
 574 assert(0);
 575 UNUSED(image);UNUSED(stride);
 576 UNUSED(w);UNUSED(h);
 577 UNUSED(x);UNUSED(y);
 578
 579   return VO_ERROR;//this is yv12 only -> vf_scale should do all transforms
 580 }
 581
 582 static int draw_frame(uint8_t *src[]) {
 583 assert(0);
 584 UNUSED(src);
 585   return VO_ERROR;//this one should not be called
 586 }
 587
 588 static void draw_osd(void)
 589 {
 590   if( mp_msg_test(MSGT_VO,MSGL_DBG4) )
 591      mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: draw_osd()\n");
 592   //only modes with bytesperpixel>0 can draw OSD
 593   if(modeinfo->bytesperpixel==0) return;
 594   if(!(mode_capabilities&CAP_LINEAR)) return;//force_native will remove OSD
 595
 596   if(blackbar_osd){
 597 //111
 598 //3 4
 599 //222
 600     svga_clear_box(0,0 + PageStore[cpage].yoffset,
 601                    modeinfo->width, y_pos);
 602     svga_clear_box(0, image_height + y_pos + PageStore[cpage].yoffset,
 603                    modeinfo->width, modeinfo->height-(image_height+ y_pos));
 604     svga_clear_box(0, y_pos + PageStore[cpage].yoffset,
 605                    x_pos, image_height);
 606     svga_clear_box(image_width + x_pos, y_pos + PageStore[cpage].yoffset,
 607                    modeinfo->width-(x_pos+image_width), image_height);
 608 //    vo_remove_text(modeinfo->width, modeinfo->height, clear_alpha);
 609     vo_draw_text(modeinfo->width, modeinfo->height, draw_alpha);
 610   }else{
 611     vo_draw_text(image_width, image_height, draw_alpha);
 612   }
 613 }
 614
 615 static void flip_page(void) {
 616   PageStore[old_page].locks=PAGE_EMPTY;
 617   PageStore[cpage].locks=PAGE_BUSY;
 618
 619   if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 620     mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: viewing page %d\n",cpage);
 621   if(sync_flip && old_page!=cpage){
 622     if( mp_msg_test(MSGT_VO,MSGL_DBG3) ) mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga:vga_waitretrace\n");
 623     vga_waitretrace();
 624   }
 625   vga_setdisplaystart(PageStore[cpage].doffset);
 626
 627   old_page=cpage;//cpage will be overwriten on next draw_image
 628 }
 629
 630 static void check_events(void) {
 631 }
 632
 633 static void uninit(void) {
 634
 635 #ifdef CONFIG_VIDIX
 636   if(vidix_name[0])vidix_term();
 637 #endif
 638   vga_setmode(TEXT);
 639 }
 640
 641 /* --------------------------------------------------------------------- */
 642 static int query_format(uint32_t format) {
 643 int32_t req_bpp,flags;
 644 int i,lastmode;
 645 vga_modeinfo * vminfo;
 646
 647   if ( mp_msg_test(MSGT_VO,MSGL_DBG4) )
 648     mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: query_format=%X \n",format);
 649 //only RGB modes supported
 650   if( (!IMGFMT_IS_RGB(format)) && (!IMGFMT_IS_BGR(format)) ) return 0;
 651
 652 // Reject different endian
 653 #ifdef WORDS_BIGENDIAN
 654   if (IMGFMT_IS_BGR(format)) return 0;
 655 #else
 656   if (IMGFMT_IS_RGB(format)) return 0;
 657 #endif
 658
 659   //svgalib supports only BG4B! if we want BGR4 we have to emulate it (sw)
 660   if( format==IMGFMT_BGR4 || format==IMGFMT_RGB4) return 0;
 661   req_bpp = IMGFMT_RGB_DEPTH(format);
 662   if( vo_dbpp>0 && vo_dbpp!=req_bpp ) return 0; //support -bpp options
 663 //scan all modes
 664   lastmode = vga_lastmodenumber();
 665   for(i=1;i<=lastmode;i++){
 666     vminfo = vga_getmodeinfo(i);
 667     if( vminfo == NULL ) continue;
 668     if( vga_hasmode(i) == 0 ) continue;
 669     if( req_bpp != bpp_from_vminfo(vminfo) ) continue;
 670     if( (force_vm > 0) && (force_vm != i) )  continue;//quick hack
 671     flags = VFCAP_CSP_SUPPORTED|
 672       VFCAP_CSP_SUPPORTED_BY_HW|
 673       VFCAP_ACCEPT_STRIDE|
 674       0;
 675     if(req_bpp>8) flags|=VFCAP_OSD;
 676     return flags;
 677   }
 678   return 0;
 679 }
 680
 681 static void draw_alpha(int x0, int y0, int w, int h, unsigned char *src,
 682                        unsigned char *srca, int stride) {
 683   char* base;
 684
 685   if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 686     mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: draw_alpha(x0=%d,y0=%d,w=%d,h=%d,src=%p,srca=%p,stride=%d\n",
 687            x0,y0,w,h,src,srca,stride);
 688   if(!blackbar_osd) {
 689     //drawing in the image, so place the stuff there
 690     x0+=x_pos;
 691     y0+=y_pos;
 692   }
 693
 694   if( mp_msg_test(MSGT_VO,MSGL_DBG4) )
 695     mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: OSD draw in page %d\n",cpage);
 696   base=PageStore[cpage].vbase + y0*mode_stride + x0*modeinfo->bytesperpixel;
 697   switch (mode_bpp) {
 698     case 32:
 699       vo_draw_alpha_rgb32(w, h, src, srca, stride, base, mode_stride);
 700       break;
 701     case 24:
 702       vo_draw_alpha_rgb24(w, h, src, srca, stride, base, mode_stride);
 703       break;
 704     case 16:
 705       vo_draw_alpha_rgb16(w, h, src, srca, stride, base, mode_stride);
 706       break;
 707     case 15:
 708       vo_draw_alpha_rgb15(w, h, src, srca, stride, base, mode_stride);
 709       break;
 710   }
 711 }
 712
 713 static uint32_t get_image(mp_image_t *mpi){
 714 int page;
 715
 716   if(!IMGFMT_IS_BGR(mpi->imgfmt) && !IMGFMT_IS_RGB(mpi->imgfmt) ){
 717     assert(0);//should never happen
 718     return VO_FALSE;
 719   }
 720
 721   if (
 722    ( (mpi->type != MP_IMGTYPE_STATIC) && (mpi->type != MP_IMGTYPE_TEMP)) ||
 723    (mpi->flags & MP_IMGFLAG_PLANAR) ||
 724    (mpi->flags & MP_IMGFLAG_YUV)
 725       )
 726     return VO_FALSE;
 727
 728 //reading from video memory is horribly slow
 729   if( !(mpi->flags & MP_IMGFLAG_READABLE) && vo_directrendering &&
 730        (mode_capabilities & CAP_LINEAR) ){
 731
 732 //find free page and reserve it
 733     page=page_find_free();
 734     if(page >= 0){
 735       PageStore[page].locks=PAGE_BUSY;
 736
 737       mpi->flags |= MP_IMGFLAG_DIRECT;
 738       mpi->stride[0] = mode_stride;
 739       mpi->planes[0] = PageStore[page].vbase +
 740              y_pos*mode_stride + (x_pos*mpi->bpp)/8;
 741       mpi->priv=(void *)page;
 742       if( mp_msg_test(MSGT_VO,MSGL_DBG3) )
 743         mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: direct render allocated! page=%d\n",page);
 744       return VO_TRUE;
 745     }
 746   }
 747
 748   return VO_FALSE;
 749 }