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SDL_ph_modes.c
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/
SDL_ph_modes.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
slouken@libsdl.org
*/
#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif
#include "SDL_ph_modes_c.h"
static unsigned long key1, key2;
static PgVideoModeInfo_t mode_info;
static PgVideoModes_t mode_list;
/* The current list of available video modes */
SDL_Rect SDL_modelist[PH_MAX_VIDEOMODES];
SDL_Rect* SDL_modearray[PH_MAX_VIDEOMODES];
static int compare_modes_by_res(const void* mode1, const void* mode2)
{
if (PgGetVideoModeInfo(*(unsigned short*)mode1, &mode_info) < 0)
{
fprintf(stderr,"error: In compare_modes_by_res PgGetVideoModeInfo failed on mode: 0x%x\n",
*(unsigned short*)mode1);
return 0;
}
key1 = mode_info.width * mode_info.height;
if (PgGetVideoModeInfo(*(unsigned short*)mode2, &mode_info) < 0)
{
fprintf(stderr,"error: In compare_modes_by_res PgGetVideoModeInfo failed on mode: 0x%x\n",
*(unsigned short*)mode2);
return 0;
}
key2 = mode_info.width * mode_info.height;
if (key1 > key2)
return 1;
else if (key1 == key2)
return 0;
else
return -1;
}
SDL_Rect **ph_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
{
int i = 0;
int j = 0;
SDL_Rect Amodelist[PH_MAX_VIDEOMODES];
for (i=0; i<PH_MAX_VIDEOMODES; i++)
{
SDL_modearray[i]=&SDL_modelist[i];
}
if (PgGetVideoModeList( &mode_list ) < 0)
{
fprintf(stderr,"error: PgGetVideoModeList failed\n");
return NULL;
}
mode_info.bits_per_pixel = 0;
for (i=0; i < mode_list.num_modes; i++)
{
if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
{
fprintf(stderr,"error: PgGetVideoModeInfo failed on mode: 0x%x\n", mode_list.modes[i]);
return NULL;
}
if(mode_info.bits_per_pixel == format->BitsPerPixel)
{
Amodelist[j].w = mode_info.width;
Amodelist[j].h = mode_info.height;
Amodelist[j].x = 0;
Amodelist[j].y = 0;
j++;
}
}
/* reorder biggest for smallest, assume width dominates */
for(i=0; i<j; i++)
{
SDL_modelist[i].w = Amodelist[j - i -1].w;
SDL_modelist[i].h = Amodelist[j - i -1].h;
SDL_modelist[i].x = Amodelist[j - i -1].x;
SDL_modelist[i].y = Amodelist[j - i -1].y;
}
SDL_modearray[j]=NULL;
return SDL_modearray;
}
void ph_FreeVideoModes(_THIS)
{
return;
}
#if 0
static void set_best_resolution(_THIS, int width, int height)
{
/* warning ! dead variable use_vidmode ! */
if ( use_vidmode ) {
PgDisplaySettings_t settings;
PgVideoModeInfo_t current_mode_info;
PgHWCaps_t my_hwcaps;
unsigned short current_bpp;
int i;
/*
if (PgGetVideoMode( &settings ) < 0)
{
fprintf(stderr,"error: PgGetVideoMode failed\n");
return;
}
if (PgGetVideoModeInfo( settings.mode, ¤t_mode_info ) < 0)
{
fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
return;
}
*/
//lu_zero
if (PgGetGraphicsHWCaps(&my_hwcaps) < 0)
{
fprintf(stderr,"set_best_resolution: GetGraphicsHWCaps failed!! \n");
//that HAVE to work
}
if (PgGetVideoModeInfo(my_hwcaps.current_video_mode, ¤t_mode_info) < 0)
{
fprintf(stderr,"set_best_resolution: PgGetVideoModeInfo failed\n");
}
current_bpp = current_mode_info.bits_per_pixel;
if (PgGetVideoModeList(&mode_list) >= 0)
{
qsort(mode_list.modes, mode_list.num_modes, sizeof(unsigned short), compare_modes_by_res);
#ifdef PH_DEBUG
printf("Available modes:\n");
for ( i = 0; i < mode_list.num_modes; ++i )
{
PgGetVideoModeInfo(mode_list.modes[i], &mode_info);
printf("Mode %d: %dx%d\n", i, mode_info.width, mode_info.height);
}
#endif
for ( i = mode_list.num_modes-1; i >= 0 ; --i )
{
if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
{
fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
}
if ( (mode_info.width >= width) &&
(mode_info.height >= height) &&
(mode_info.bits_per_pixel == current_bpp) )
break;
}
if (i >= 0)
{
if ( (mode_info.width != current_mode_info.width) ||
(mode_info.height != current_mode_info.height) )
{
settings.mode = mode_list.modes[i];
if(PgSetVideoMode( &settings ) < 0)
{
fprintf(stderr,"error: PgSetVideoMode failed\n");
}
}
}
}
}
}
int ph_ResizeFullScreen(_THIS)
{
if (currently_fullscreen)
{
set_best_resolution(this, current_w, current_h);
}
return (1);
}
#endif /* 0 */
/* return the mode associated with width, height and bpp */
/* if there is no mode then zero is returned */
int get_mode(int width, int height, int bpp)
{
int i;
if(width<640)
{
width=640;
}
if(height<480)
{
height=480;
}
if (PgGetVideoModeList(&mode_list) < 0)
{
fprintf(stderr,"error: PgGetVideoModeList failed\n");
return -1;
}
/* search list for exact match */
for (i=0;i<mode_list.num_modes;i++)
{
if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
{
fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
return 0;
}
if ((mode_info.width == width) &&
(mode_info.height == height) &&
(mode_info.bits_per_pixel == bpp))
{
return mode_list.modes[i];
}
}
return (i == mode_list.num_modes) ? 0 : mode_list.modes[i];
}
int get_mode_any_format(int width, int height, int bpp)
/* return the mode associated with width, height and bpp */
/* if requested bpp is not found the mode with closest bpp is returned */
{
int i, closest, delta, min_delta;
if (PgGetVideoModeList( &mode_list ) < 0)
{
fprintf(stderr,"error: PgGetVideoModeList failed\n");
return -1;
}
qsort(mode_list.modes, mode_list.num_modes, sizeof(unsigned short), compare_modes_by_res);
for(i=0;i<mode_list.num_modes;i++)
{
if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
{
fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
return 0;
}
if ((mode_info.width == width) &&
(mode_info.height == height))
break;
}
if (i<mode_list.num_modes)
{
/* get closest bpp */
closest = i++;
if (mode_info.bits_per_pixel == bpp)
return mode_list.modes[ closest ];
min_delta = abs(mode_info.bits_per_pixel - bpp);
while(1)
{
if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
{
fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
return 0;
}
if ((mode_info.width != width) ||
(mode_info.height != height))
break;
else if (mode_info.bits_per_pixel == bpp)
{
closest = i;
break;
}
else
{
delta = abs(mode_info.bits_per_pixel - bpp);
if (delta < min_delta)
{
closest = i;
min_delta = delta;
}
i++;
}
}
return mode_list.modes[ closest ];
}
else
return 0;
}
void ph_WaitMapped(_THIS);
void ph_WaitUnmapped(_THIS);
void ph_QueueEnterFullScreen(_THIS);
int ph_ToggleFullScreen(_THIS, int on)
{
if (currently_fullscreen)
{
return ph_LeaveFullScreen(this);
}
else
{
return ph_EnterFullScreen(this);
}
return 0;
}
int ph_EnterFullScreen(_THIS)
{
if (!currently_fullscreen)
{
if (this->screen)
{
if ((this->screen->flags & SDL_OPENGL)==SDL_OPENGL)
{
#ifdef HAVE_OPENGL
#endif /* HAVE_OPENGL */
return 0;
}
}
if (OCImage.direct_context == NULL)
{
OCImage.direct_context=(PdDirectContext_t*)PdCreateDirectContext();
}
if (!OCImage.direct_context)
{
fprintf(stderr, "ph_EnterFullScreen: Can't create direct context\n" );
}
PdDirectStart(OCImage.direct_context);
currently_fullscreen = 1;
}
return 1;
}
int ph_LeaveFullScreen(_THIS)
{
PgDisplaySettings_t mymode_settings;
if (currently_fullscreen)
{
if ((this->screen->flags & SDL_OPENGL)==SDL_OPENGL)
{
#ifdef HAVE_OPENGL
#endif /* HAVE_OPENGL */
return 0;
}
else
{
PdDirectStop(OCImage.direct_context);
PdReleaseDirectContext(OCImage.direct_context);
currently_fullscreen=0;
/* Restore old video mode */
if (old_video_mode != -1)
{
mymode_settings.mode= (unsigned short) old_video_mode;
mymode_settings.refresh= (unsigned short) old_refresh_rate;
mymode_settings.flags= 0;
if (PgSetVideoMode(&mymode_settings) < 0)
{
fprintf(stderr,"error: PgSetVideoMode failed\n");
}
}
old_video_mode=-1;
old_refresh_rate=-1;
}
}
return 1;
}