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