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                     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         mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: clearing box %d,%d - %d,%d with HW acceleration\n",
 214                x,y,w,h);
 215         if(mode_capabilities&CAP_ACCEL_BACKGR)
 216             vga_accel(ACCEL_SYNC);
 217         vga_accel(ACCEL_SETFGCOLOR,0);//black
 218         vga_accel(ACCEL_FILLBOX,x,y,w,h);
 219         return;
 220     }
 221     if (mode_capabilities & CAP_LINEAR){
 222         mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: clearing box %d,%d - %d,%d with memset\n",x,y,w,h);
 223         rgbplane=PageStore[0].vbase + (y*mode_stride) + (x*modeinfo->bytesperpixel);
 224         for(i=0;i<h;i++){
 225 //i'm afraid that memcpy is better optimized than memset;)
 226             fast_memcpy(rgbplane,zerobuf,w*modeinfo->bytesperpixel);
 227 //    memset(rgbplane,0,w*modeinfo->bytesperpixel);
 228             rgbplane+=mode_stride;
 229         }
 230         return;
 231     }
 232     //native
 233     mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: clearing box %d,%d - %d,%d with native draw \n",x,y,w,h);
 234     if(modeinfo->bytesperpixel!=0) w*=modeinfo->bytesperpixel;
 235     for(i=0;i<h;i++){
 236         vga_drawscansegment(zerobuf,x,y+i,w);
 237     }
 238 };
 239
 240 static uint32_t svga_draw_image(mp_image_t *mpi){
 241     int i,x,y,w,h;
 242     int stride;
 243     uint8_t *rgbplane, *base;
 244     int bytesperline;
 245     int page;
 246
 247     if(mpi->flags & MP_IMGFLAG_DIRECT){
 248         mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: drawing direct rendered surface\n");
 249         cpage=(uint32_t)mpi->priv;
 250         assert((cpage>=0)&&(cpage<max_pages));
 251         return VO_TRUE; //it's already done
 252     }
 253 //  if (mpi->flags&MP_IMGFLAGS_DRAWBACK)
 254 //  return VO_TRUE;//direct render method 2
 255
 256 //find a free page to draw into
 257 //if there is no one then use the current one
 258     page = page_find_free();
 259     if(page>=0) cpage=page;
 260     PageStore[cpage].locks=PAGE_BUSY;
 261
 262 // these variables are used in loops
 263     x = mpi->x;
 264     y = mpi->y;
 265     w = mpi->w;
 266     h = mpi->h;
 267     stride = mpi->stride[0];
 268     rgbplane = mpi->planes[0] + y*stride + (x*mpi->bpp)/8;
 269     x+=x_pos;//center
 270     y+=y_pos;
 271
 272     if(mpi->bpp >= 8){//for modes<8 use only native
 273         if( (mode_capabilities&CAP_ACCEL_PUTIMAGE) && (x==0) && (w==mpi->width) &&
 274             (stride == mode_stride) ){ //only monolite image can be accelerated
 275             w=(stride*8)/mpi->bpp;//we transfer pixels in the stride so the source
 276 //ACCELERATE
 277             mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: using HW PutImage (x=%d,y=%d,w=%d,h=%d)\n",x,y,w,h);
 278             if(mode_capabilities & CAP_ACCEL_BACKGR)
 279                 vga_accel(ACCEL_SYNC);
 280
 281             vga_accel(ACCEL_PUTIMAGE,x,y+PageStore[cpage].yoffset,w,h,rgbplane);
 282             return VO_TRUE;
 283         }
 284
 285         if( mode_capabilities&CAP_LINEAR){
 286 //DIRECT
 287             mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: using Direct memcpy (x=%d,y=%d,w=%d,h=%d)\n",x,y,w,h);
 288             bytesperline=(w*mpi->bpp)/8;
 289             base=PageStore[cpage].vbase + (y*mode_stride) + (x*mpi->bpp)/8;
 290
 291             for(i=0;i<h;i++){
 292                 mem2agpcpy(base,rgbplane,bytesperline);
 293                 base+=mode_stride;
 294                 rgbplane+=stride;
 295             }
 296             return VO_TRUE;
 297         }
 298     }//(modebpp>=8
 299
 300
 301 //NATIVE
 302     {
 303         int length;
 304         length=(w*mpi->bpp)/8;
 305         //one byte per pixel! svgalib innovation
 306         if(mpi->imgfmt==IMGFMT_RG4B || mpi->imgfmt==IMGFMT_BG4B) length=w;
 307
 308         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);
 309         y+=PageStore[cpage].yoffset;//y position of the page beggining
 310         for(i=0;i<h;i++){
 311             vga_drawscansegment(rgbplane,x,y+i,length);
 312             rgbplane+=stride;
 313         }
 314     }
 315     return VO_TRUE;
 316 }
 317
 318 static int bpp_from_vminfo(vga_modeinfo *vminfo){
 319     switch(vminfo->colors){
 320         case 2: return 1;
 321         case 16: return 4;
 322         case 256: return 8;
 323         case 32768: return 15;
 324         case 65536: return 16;
 325         case 1<<24: return 8*vminfo->bytesperpixel;
 326     }
 327     return 0;
 328 }
 329
 330 static int find_best_svga_mode(int req_w,int req_h, int req_bpp){
 331     int badness,prev_badness;
 332     int bestmode,lastmode;
 333     int i;
 334     vga_modeinfo *vminfo;
 335 //int best aspect mode // best linear mode // best normal mode (no modeX)
 336
 337     prev_badness = 0;//take care of special case below
 338     bestmode = 0; //0 is the TEXT mode
 339     lastmode = vga_lastmodenumber();
 340     for(i=1;i<=lastmode;i++){
 341         vminfo = vga_getmodeinfo(i);
 342         if( vminfo == NULL ) continue;
 343         mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: testing mode %d (%s)\n",i,vga_getmodename(i));
 344         if( vga_hasmode(i) == 0 ) continue;
 345         if( req_bpp != bpp_from_vminfo(vminfo) )continue;
 346         if( (vminfo->width < req_w) || (vminfo->height < req_h) ) continue;
 347             badness=(vminfo->width * vminfo->height) - (req_h * req_w);
 348         //put here aspect calculations
 349         if(squarepix)
 350             if( vminfo->width*3 != vminfo->height*4 ) continue;
 351
 352         if( bestmode==0 || prev_badness >= badness ){//modeX etc...
 353             prev_badness=badness;
 354             bestmode=i;
 355             mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: found good mode %d with badness %d\n",i,badness);
 356         }
 357     }
 358     return bestmode;
 359 }
 360
 361 static int control(uint32_t request, void *data)
 362 {
 363     switch (request) {
 364         case VOCTRL_QUERY_FORMAT:
 365             return query_format(*((uint32_t*)data));
 366         case VOCTRL_DRAW_IMAGE:
 367             return svga_draw_image( (mp_image_t *)data);
 368         case VOCTRL_GET_IMAGE:
 369             return get_image(data);
 370     }
 371
 372 #ifdef CONFIG_VIDIX
 373     if (vidix_name[0])
 374         return vidix_control(request, data);
 375 #endif
 376
 377     return VO_NOTIMPL;
 378 }
 379
 380 //
 381 // This function is called to init the video driver for specific mode
 382 //
 383 static int config(uint32_t width, uint32_t height, uint32_t d_width,
 384                        uint32_t d_height, uint32_t flags, char *title,
 385                        uint32_t format) {
 386     int32_t req_w = width;// (d_width > 0 ? d_width : width);
 387     int32_t req_h = height;// (d_height > 0 ? d_height : height);
 388     uint16_t vid_mode = 0;
 389     int32_t req_bpp;
 390
 391     uint32_t accflags;
 392     mp_msg(MSGT_VO,MSGL_V, "vo_svga: config(%i, %i, %i, %i, %08x, %s, %08x)\n", width, height,
 393            d_width, d_height, flags, title, format);
 394 //Only RGB modes supported
 395     if (!IMGFMT_IS_RGB(format) && !IMGFMT_IS_BGR(format)) {assert(0);return -1;}
 396     req_bpp = IMGFMT_BGR_DEPTH(format);
 397
 398     if( vo_dbpp!=0 && vo_dbpp!=req_bpp) {assert(0);return-1;}
 399
 400     if(!force_vm) {
 401         mp_msg(MSGT_VO,MSGL_V, "vo_svga: Looking for the best resolution...\n");
 402         mp_msg(MSGT_VO,MSGL_V, "vo_svga: req_w: %d, req_h: %d, bpp: %d\n",req_w,req_h,req_bpp);
 403         vid_mode=find_best_svga_mode(req_w,req_h,req_bpp);
 404         if(vid_mode==0)
 405             return 1;
 406         modeinfo=vga_getmodeinfo(vid_mode);
 407     }else{//force_vm
 408         vid_mode=force_vm;
 409         if(vga_hasmode(vid_mode) == 0){
 410             mp_tmsg(MSGT_VO,MSGL_ERR, "[VO_SVGA] Forced vid_mode %d (%s) not available.\n",
 411                    vid_mode,vga_getmodename(vid_mode));
 412             return 1; //error;
 413         }
 414         modeinfo=vga_getmodeinfo(vid_mode);
 415         if( (modeinfo->width < req_w) || (modeinfo->height < req_h) ){
 416             mp_tmsg(MSGT_VO,MSGL_ERR, "[VO_SVGA] Forced vid_mode %d (%s) too small.\n",
 417                    vid_mode,vga_getmodename(vid_mode));
 418             return 1;
 419         }
 420     }
 421     mode_bpp=bpp_from_vminfo(modeinfo);
 422
 423     mp_tmsg(MSGT_VO,MSGL_INFO, "[VO_SVGA] Vid_mode: %d, %dx%d %dbpp.\n",
 424            vid_mode,modeinfo->width,modeinfo->height,mode_bpp);
 425
 426     if (vga_setmode(vid_mode) == -1) {
 427         mp_tmsg(MSGT_VO,MSGL_ERR, "[VO_SVGA] Vga_setmode(%d) failed.\n",vid_mode);
 428         uninit();
 429         return 1; // error
 430     }
 431     /* set 332 palette for 8 bpp */
 432     if(mode_bpp==8){
 433         int i;
 434         for(i=0; i<256; i++)
 435             vga_setpalette(i, ((i>>5)&7)*9, ((i>>2)&7)*9, (i&3)*21);
 436     }
 437     /* set 121 palette for 4 bpp */
 438     else if(mode_bpp==4){
 439         int i;
 440         for(i=0; i<16; i++)
 441         vga_setpalette(i, ((i>>3)&1)*63, ((i>>1)&3)*21, (i&1)*63);
 442     }
 443     //if we change the logical width, we should know the granularity
 444     stride_granularity=8;//according to man vga_logicalwidth
 445     if(modeinfo->flags & EXT_INFO_AVAILABLE){
 446         stride_granularity=modeinfo->linewidth_unit;
 447     }
 448     //look for hardware acceleration
 449     mode_capabilities=0;//NATIVE;
 450     if(!force_native){//if we want to use only native drawers
 451         if(modeinfo->flags & HAVE_EXT_SET){//support for hwaccel interface
 452             accflags=vga_ext_set(VGA_EXT_AVAILABLE,VGA_AVAIL_ACCEL);
 453             if(accflags & ACCELFLAG_FILLBOX) // clear screen
 454                 mode_capabilities|=CAP_ACCEL_CLEAR;
 455             if(accflags & ACCELFLAG_PUTIMAGE)//support for mem->vid transfer
 456                 mode_capabilities|=CAP_ACCEL_PUTIMAGE;
 457             if((accflags & ACCELFLAG_SETMODE) && (accflags & ACCELFLAG_SYNC)){
 458                 vga_accel(ACCEL_SETMODE,BLITS_IN_BACKGROUND);
 459                 mode_capabilities|=CAP_ACCEL_BACKGR;//can draw in backgraund
 460             }
 461         }
 462         if(modeinfo->flags & IS_LINEAR){
 463             mode_capabilities|=CAP_LINEAR; //don't use bank & vga_draw
 464         }
 465         else{
 466             if(modeinfo->flags & CAPABLE_LINEAR){
 467                 int vid_mem_size;
 468                 vid_mem_size = vga_setlinearaddressing();
 469                 if(vid_mem_size != -1){
 470                     modeinfo=vga_getmodeinfo(vid_mode);//sometimes they change parameters
 471                     mode_capabilities|=CAP_LINEAR;
 472                 }
 473             }
 474         }
 475     }//fi force native
 476     if(mode_capabilities&CAP_LINEAR){
 477         mp_tmsg(MSGT_VO,MSGL_INFO, "[VO_SVGA] Video mode is linear and memcpy could be used for image transfer.\n");
 478     }
 479     if(mode_capabilities&CAP_ACCEL_PUTIMAGE){
 480         mp_tmsg(MSGT_VO,MSGL_INFO, "[VO_SVGA] Video mode has hardware acceleration and put_image could be used.\n");
 481         mp_tmsg(MSGT_VO,MSGL_INFO, "[VO_SVGA] If it works for you I would like to know.\n[VO_SVGA] (send log with `mplayer test.avi -v -v -v -v &> svga.log`). Thx!\n");
 482     }
 483
 484 //here is the place to handle strides for accel_ modes;
 485     mode_stride=modeinfo->linewidth;
 486 //we may try to set a bigger stride for video mode that will match the mpi->stride,
 487 //this way we will transfer more data, but HW put_image can do it in backgraund!
 488
 489 //now let's see how many pages we can use
 490     max_pages = modeinfo->maxpixels/(modeinfo->height * modeinfo->width);
 491     if(max_pages > MAXPAGES) max_pages = MAXPAGES;
 492     if(!vo_doublebuffering) max_pages=1;
 493 //fill PageStore structs
 494     {
 495         int i;
 496         uint8_t * GRAPH_MEM;
 497         int dof;
 498         GRAPH_MEM=vga_getgraphmem();
 499         for(i=0;i<max_pages;i++){
 500             //calculate display offset
 501             dof = i * modeinfo->height * modeinfo->width;
 502             if(modeinfo->bytesperpixel != 0) dof*=modeinfo->bytesperpixel;
 503             //check video chip limitations
 504             if( dof != (dof & modeinfo->startaddressrange) ){
 505                 max_pages=i;//page 0 will never come here
 506                 break;
 507             }
 508             PageStore[i].yoffset = i * modeinfo->height;//starting y offset
 509             PageStore[i].vbase = GRAPH_MEM + i*modeinfo->height*mode_stride; //memory base address
 510             PageStore[i].doffset = dof; //display offset
 511             PageStore[i].locks = PAGE_EMPTY;
 512         }
 513     }
 514     assert(max_pages>0);
 515     mp_tmsg(MSGT_VO,MSGL_INFO, "[VO_SVGA] Video mode has %d page(s).\n",max_pages);
 516     //15bpp
 517     if(modeinfo->bytesperpixel!=0)
 518         vga_claimvideomemory(max_pages * modeinfo->height * modeinfo->width * modeinfo->bytesperpixel);
 519     else
 520         vga_claimvideomemory(max_pages * modeinfo->height * modeinfo->width * mode_bpp / 8);
 521
 522     cpage=old_page=0;
 523     svga_clear_box(0,0,modeinfo->width,modeinfo->height * max_pages);
 524
 525     image_height=req_h;
 526     image_width=req_w;
 527     x_pos = (modeinfo->width  - req_w) / 2;
 528     y_pos = (modeinfo->height - req_h) / 2;
 529     x_pos &= ~(15); //align x offset position to 16 pixels
 530     mp_tmsg(MSGT_VO,MSGL_INFO, "[VO_SVGA] Centering image. Starting at (%d,%d)\n",x_pos,y_pos);
 531
 532 #ifdef CONFIG_VIDIX
 533
 534     if(vidix_name[0]){
 535         vidix_init(width, height, x_pos, y_pos, modeinfo->width, modeinfo->height,
 536                    format, mode_bpp, modeinfo->width,modeinfo->height);
 537         mp_tmsg(MSGT_VO,MSGL_INFO, "[VO_SVGA] Using VIDIX. w=%i h=%i  mw=%i mh=%i\n",width,height,
 538                modeinfo->width,modeinfo->height);
 539         vidix_start();
 540         /*set colorkey*/
 541         if(vidix_grkey_support()){
 542             vidix_grkey_get(&gr_key);
 543             gr_key.key_op = KEYS_PUT;
 544             if (!(vo_colorkey & 0xFF000000)) {
 545                 gr_key.ckey.op = CKEY_TRUE;
 546                 gr_key.ckey.red = (vo_colorkey & 0x00FF0000) >> 16;
 547                 gr_key.ckey.green = (vo_colorkey & 0x0000FF00) >> 8;
 548                 gr_key.ckey.blue = vo_colorkey & 0x000000FF;
 549             } else
 550                 gr_key.ckey.op = CKEY_FALSE;
 551             vidix_grkey_set(&gr_key);
 552         }
 553     }
 554 #endif
 555
 556     vga_setdisplaystart(0);
 557     return 0;
 558 }
 559
 560 static int draw_slice(uint8_t *image[],int stride[],
 561                int w, int h, int x, int y) {
 562     assert(0);
 563     UNUSED(image);UNUSED(stride);
 564     UNUSED(w);UNUSED(h);
 565     UNUSED(x);UNUSED(y);
 566
 567     return VO_ERROR;//this is yv12 only -> vf_scale should do all transforms
 568 }
 569
 570 static int draw_frame(uint8_t *src[]) {
 571     assert(0);
 572     UNUSED(src);
 573     return VO_ERROR;//this one should not be called
 574 }
 575
 576 static void draw_osd(void)
 577 {
 578     mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: draw_osd()\n");
 579     //only modes with bytesperpixel>0 can draw OSD
 580     if(modeinfo->bytesperpixel==0) return;
 581     if(!(mode_capabilities&CAP_LINEAR)) return;//force_native will remove OSD
 582
 583     if(blackbar_osd){
 584 //111
 585 //3 4
 586 //222
 587         svga_clear_box(0,0 + PageStore[cpage].yoffset,
 588                        modeinfo->width, y_pos);
 589         svga_clear_box(0, image_height + y_pos + PageStore[cpage].yoffset,
 590                        modeinfo->width, modeinfo->height-(image_height+ y_pos));
 591         svga_clear_box(0, y_pos + PageStore[cpage].yoffset,
 592                        x_pos, image_height);
 593         svga_clear_box(image_width + x_pos, y_pos + PageStore[cpage].yoffset,
 594                        modeinfo->width-(x_pos+image_width), image_height);
 595 //    vo_remove_text(modeinfo->width, modeinfo->height, clear_alpha);
 596         vo_draw_text(modeinfo->width, modeinfo->height, draw_alpha);
 597     }else{
 598         vo_draw_text(image_width, image_height, draw_alpha);
 599     }
 600 }
 601
 602 static void flip_page(void) {
 603     PageStore[old_page].locks=PAGE_EMPTY;
 604     PageStore[cpage].locks=PAGE_BUSY;
 605
 606     mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: viewing page %d\n",cpage);
 607     if(sync_flip && old_page!=cpage){
 608         mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga:vga_waitretrace\n");
 609         vga_waitretrace();
 610     }
 611     vga_setdisplaystart(PageStore[cpage].doffset);
 612
 613     old_page=cpage;//cpage will be overwriten on next draw_image
 614 }
 615
 616 static void check_events(void) {
 617 }
 618
 619 static void uninit(void) {
 620
 621 #ifdef CONFIG_VIDIX
 622     if(vidix_name[0])vidix_term();
 623 #endif
 624     vga_setmode(TEXT);
 625 }
 626
 627 /* --------------------------------------------------------------------- */
 628 static int query_format(uint32_t format) {
 629     int32_t req_bpp,flags;
 630     int i,lastmode;
 631     vga_modeinfo * vminfo;
 632
 633     mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: query_format=%X \n",format);
 634 //only RGB modes supported
 635     if( (!IMGFMT_IS_RGB(format)) && (!IMGFMT_IS_BGR(format)) ) return 0;
 636
 637 // Reject different endian
 638 #if HAVE_BIGENDIAN
 639     if (IMGFMT_IS_BGR(format)) return 0;
 640 #else
 641     if (IMGFMT_IS_RGB(format)) return 0;
 642 #endif
 643
 644     //svgalib supports only BG4B! if we want BGR4 we have to emulate it (sw)
 645     if( format==IMGFMT_BGR4 || format==IMGFMT_RGB4) return 0;
 646     req_bpp = IMGFMT_RGB_DEPTH(format);
 647     if( vo_dbpp>0 && vo_dbpp!=req_bpp ) return 0; //support -bpp options
 648 //scan all modes
 649     lastmode = vga_lastmodenumber();
 650     for(i=1;i<=lastmode;i++){
 651         vminfo = vga_getmodeinfo(i);
 652         if( vminfo == NULL ) continue;
 653         if( vga_hasmode(i) == 0 ) continue;
 654         if( req_bpp != bpp_from_vminfo(vminfo) ) continue;
 655         if( (force_vm > 0) && (force_vm != i) )  continue;//quick hack
 656         flags = VFCAP_CSP_SUPPORTED|
 657                 VFCAP_CSP_SUPPORTED_BY_HW|
 658                 VFCAP_ACCEPT_STRIDE|
 659                 0;
 660         if(req_bpp>8) flags|=VFCAP_OSD;
 661         return flags;
 662     }
 663     return 0;
 664 }
 665
 666 static void draw_alpha(int x0, int y0, int w, int h, unsigned char *src,
 667                        unsigned char *srca, int stride) {
 668     char* base;
 669
 670     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",
 671            x0,y0,w,h,src,srca,stride);
 672     if(!blackbar_osd) {
 673         //drawing in the image, so place the stuff there
 674         x0+=x_pos;
 675         y0+=y_pos;
 676     }
 677
 678     mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: OSD draw in page %d\n",cpage);
 679     base=PageStore[cpage].vbase + y0*mode_stride + x0*modeinfo->bytesperpixel;
 680     switch (mode_bpp) {
 681         case 32:
 682             vo_draw_alpha_rgb32(w, h, src, srca, stride, base, mode_stride);
 683             break;
 684         case 24:
 685             vo_draw_alpha_rgb24(w, h, src, srca, stride, base, mode_stride);
 686             break;
 687         case 16:
 688             vo_draw_alpha_rgb16(w, h, src, srca, stride, base, mode_stride);
 689             break;
 690         case 15:
 691             vo_draw_alpha_rgb15(w, h, src, srca, stride, base, mode_stride);
 692             break;
 693     }
 694 }
 695
 696 static uint32_t get_image(mp_image_t *mpi){
 697     int page;
 698
 699     if(!IMGFMT_IS_BGR(mpi->imgfmt) && !IMGFMT_IS_RGB(mpi->imgfmt) ){
 700         assert(0);//should never happen
 701         return VO_FALSE;
 702     }
 703
 704     if (
 705         ( (mpi->type != MP_IMGTYPE_STATIC) && (mpi->type != MP_IMGTYPE_TEMP)) ||
 706         (mpi->flags & MP_IMGFLAG_PLANAR) ||
 707         (mpi->flags & MP_IMGFLAG_YUV)
 708        )
 709     return VO_FALSE;
 710
 711 //reading from video memory is horribly slow
 712     if( !(mpi->flags & MP_IMGFLAG_READABLE) && vo_directrendering &&
 713         (mode_capabilities & CAP_LINEAR) ){
 714
 715 //find free page and reserve it
 716         page=page_find_free();
 717         if(page >= 0){
 718             PageStore[page].locks=PAGE_BUSY;
 719
 720             mpi->flags |= MP_IMGFLAG_DIRECT;
 721             mpi->stride[0] = mode_stride;
 722             mpi->planes[0] = PageStore[page].vbase +
 723                              y_pos*mode_stride + (x_pos*mpi->bpp)/8;
 724             mpi->priv=(void *)page;
 725             mp_msg(MSGT_VO,MSGL_DBG3, "vo_svga: direct render allocated! page=%d\n",page);
 726             return VO_TRUE;
 727         }
 728     }
 729
 730     return VO_FALSE;
 731 }