//
// This function is called to init the video driver for specific mode
//
static int config(uint32_t width, uint32_t height, uint32_t d_width,
uint32_t d_height, uint32_t flags, char *title,
uint32_t format) {
int32_t req_w = width;// (d_width > 0 ? d_width : width);
int32_t req_h = height;// (d_height > 0 ? d_height : height);
uint16_t vid_mode = 0;
int32_t req_bpp;
uint32_t accflags;
mp_msg(MSGT_VO,MSGL_V, "vo_svga: config(%i, %i, %i, %i, %08x, %s, %08x)\n", width, height,
d_width, d_height, flags, title, format);
//Only RGB modes supported
if (!IMGFMT_IS_RGB(format) && !IMGFMT_IS_BGR(format)) {
assert(0);
return -1;
}
req_bpp = IMGFMT_BGR_DEPTH(format);
if( vo_dbpp!=0 && vo_dbpp!=req_bpp) {
assert(0);
return-1;
}
if(!force_vm) {
mp_msg(MSGT_VO,MSGL_V, "vo_svga: Looking for the best resolution...\n");
mp_msg(MSGT_VO,MSGL_V, "vo_svga: req_w: %d, req_h: %d, bpp: %d\n",req_w,req_h,req_bpp);
vid_mode=find_best_svga_mode(req_w,req_h,req_bpp);
if(vid_mode==0)
return 1;
modeinfo=vga_getmodeinfo(vid_mode);
} else { //force_vm
vid_mode=force_vm;
if(vga_hasmode(vid_mode) == 0) {
mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_SVGA_ForcedVidmodeNotAvailable,
vid_mode,vga_getmodename(vid_mode));
return 1; //error;
}
modeinfo=vga_getmodeinfo(vid_mode);
if( (modeinfo->width < req_w) || (modeinfo->height < req_h) ) {
mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_SVGA_ForcedVidmodeTooSmall,
vid_mode,vga_getmodename(vid_mode));
return 1;
}
}
mode_bpp=bpp_from_vminfo(modeinfo);
mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_SVGA_Vidmode,
vid_mode,modeinfo->width,modeinfo->height,mode_bpp);
if (vga_setmode(vid_mode) == -1) {
mp_msg(MSGT_VO,MSGL_ERR, MSGTR_LIBVO_SVGA_VgasetmodeFailed,vid_mode);
uninit();
return 1; // error
}
/* set 332 palette for 8 bpp */
if(mode_bpp==8) {
int i;
for(i=0; i<256; i++)
vga_setpalette(i, ((i>>5)&7)*9, ((i>>2)&7)*9, (i&3)*21);
}
static int find_best_svga_mode(int req_w,int req_h, int req_bpp){
int badness,prev_badness;
int bestmode,lastmode;
int i;
vga_modeinfo *vminfo;
//int best aspect mode // best linear mode // best normal mode (no modeX)
prev_badness = 0;//take care of special case below
bestmode = 0; //0 is the TEXT mode
lastmode = vga_lastmodenumber();
for(i=1;i<=lastmode;i++){
vminfo = vga_getmodeinfo(i);
if( vminfo == NULL ) continue;
if( mp_msg_test(MSGT_VO,MSGL_DBG4) )
mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: testing mode %d (%s)\n",i,vga_getmodename(i));
if( vga_hasmode(i) == 0 ) continue;
if( req_bpp != bpp_from_vminfo(vminfo) )continue;
if( (vminfo->width < req_w) || (vminfo->height < req_h) ) continue;
badness=(vminfo->width * vminfo->height) - (req_h * req_w);
//put here aspect calculations
if(squarepix)
if( vminfo->width*3 != vminfo->height*4 ) continue;
if( bestmode==0 || prev_badness >= badness ){//modeX etc...
prev_badness=badness;
bestmode=i;
if( mp_msg_test(MSGT_VO,MSGL_DBG4) )
mp_msg(MSGT_VO,MSGL_DBG4, "vo_svga: found good mode %d with badness %d\n",i,badness);
}
}
return bestmode;
}
/* This one won't type an error message ... */
int __svgalib_name2number(char *m)
{
int i;
for (i = G320x200x16; i <= GLASTMODE; i++) {
if (strcasecmp(m, vga_getmodename(i)) == 0) /* check name */
return i;
}
return -1;
}
void configure(void)
{
int allowed[GLASTMODE + 1];
for (;;) {
int i;
int m;
for (i = G320x200x16; i <= GLASTMODE; i++) {
allowed[i] = 0;
if (vga_hasmode(i)) {
printf("%2d %s\n", i, vga_getmodename(i));
allowed[i] = 1;
}
}
printf("\nWhich mode? ");
scanf("%d", &m);
getchar();
printf("\n");
if (m >= G320x200x16 && m <= GLASTMODE) {
VGAMODE = m;
if (vga_getmodeinfo(m)->bytesperpixel >= 1)
USEGL = 1;
else
USEGL = 0;
break;
}
}
vga_setmode(VGAMODE);
#ifdef LINEAR_ADDRESSING
vga_setlinearaddressing();
#endif
if (USEGL) {
gl_setcontextvga(VGAMODE);
physicalscreen = gl_allocatecontext();
gl_getcontext(physicalscreen);
}
}
