Mercurial > sdl-ios-xcode
view src/video/photon/SDL_ph_modes.c @ 2288:e9bcf004c324
Merged fix for bug #482 from SDL 1.2 revision 3492.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 29 Dec 2007 20:13:23 +0000 |
parents | c121d94672cb |
children | 99210400e8b9 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #include "SDL_ph_modes_c.h" 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) { PgVideoModeInfo_t mode1_info; PgVideoModeInfo_t mode2_info; if (PgGetVideoModeInfo(*(unsigned short *) mode1, &mode1_info) < 0) { return 0; } if (PgGetVideoModeInfo(*(unsigned short *) mode2, &mode2_info) < 0) { return 0; } if (mode1_info.width == mode2_info.width) { return mode2_info.height - mode1_info.height; } else { return mode2_info.width - mode1_info.width; } } 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) { SDL_SetError ("ph_ListModes(): PgGetVideoModeList() function 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) { SDL_SetError ("ph_ListModes(): PgGetVideoModeInfo() function 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; } /* return the mode associated with width, height and bpp */ /* if there is no mode then zero is returned */ int ph_GetVideoMode(int width, int height, int bpp) { int i; int modestage = 0; int closestmode = 0; if (PgGetVideoModeList(&mode_list) < 0) { return -1; } /* special case for the double-sized 320x200 mode */ if ((width == 640) && (height == 400)) { modestage = 1; } /* search list for exact match */ for (i = 0; i < mode_list.num_modes; i++) { if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0) { return 0; } if ((mode_info.width == width) && (mode_info.height == height) && (mode_info.bits_per_pixel == bpp)) { return mode_list.modes[i]; } else { if ((modestage) && (mode_info.width == width) && (mode_info.height == height + 80) && (mode_info.bits_per_pixel == bpp)) { modestage = 2; closestmode = mode_list.modes[i]; } } } /* if we are here, then no 640x400xbpp mode found and we'll emulate it via 640x480xbpp mode */ if (modestage == 2) { return closestmode; } return (i == mode_list.num_modes) ? 0 : mode_list.modes[i]; } /* return the mode associated with width, height and bpp */ /* if requested bpp is not found the mode with closest bpp is returned */ int get_mode_any_format(int width, int height, int bpp) { int i, closest, delta, min_delta; if (PgGetVideoModeList(&mode_list) < 0) { return -1; } SDL_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) { 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) { 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]; } return 0; } int ph_ToggleFullScreen(_THIS, int on) { return -1; } int ph_EnterFullScreen(_THIS, SDL_Surface * screen, int fmode) { PgDisplaySettings_t settings; int mode; char *refreshrate; int refreshratenum; if (!currently_fullscreen) { /* Get the video mode and set it */ if (screen->flags & SDL_ANYFORMAT) { if ((mode = get_mode_any_format(screen->w, screen->h, screen->format->BitsPerPixel)) == 0) { SDL_SetError ("ph_EnterFullScreen(): can't find appropriate video mode !\n"); return 0; } } else { if ((mode = ph_GetVideoMode(screen->w, screen->h, screen->format->BitsPerPixel)) == 0) { SDL_SetError ("ph_EnterFullScreen(): can't find appropriate video mode !\n"); return 0; } if (PgGetVideoModeInfo(mode, &mode_info) < 0) { SDL_SetError ("ph_EnterFullScreen(): can't get video mode capabilities !\n"); return 0; } if (mode_info.height != screen->h) { if ((mode_info.height == 480) && (screen->h == 400)) { videomode_emulatemode = 1; } } else { videomode_emulatemode = 0; } } /* save old video mode caps */ PgGetVideoMode(&settings); old_video_mode = settings.mode; old_refresh_rate = settings.refresh; /* setup new video mode */ settings.mode = mode; settings.refresh = 0; settings.flags = 0; refreshrate = SDL_getenv("SDL_PHOTON_FULLSCREEN_REFRESH"); if (refreshrate != NULL) { if (SDL_sscanf(refreshrate, "%d", &refreshratenum) == 1) { settings.refresh = refreshratenum; } } if (PgSetVideoMode(&settings) < 0) { SDL_SetError ("ph_EnterFullScreen(): PgSetVideoMode() call failed !\n"); return 0; } if (this->screen) { if (this->screen->flags & SDL_INTERNALOPENGL) { #if !SDL_VIDEO_OPENGL || (_NTO_VERSION < 630) return 0; /* 6.3.0 */ #endif } } if (fmode == 0) { if (OCImage.direct_context == NULL) { OCImage.direct_context = (PdDirectContext_t *) PdCreateDirectContext(); if (!OCImage.direct_context) { SDL_SetError ("ph_EnterFullScreen(): Can't create direct context !\n"); ph_LeaveFullScreen(this); return 0; } } OCImage.oldDC = PdDirectStart(OCImage.direct_context); } currently_fullscreen = 1; } PgFlush(); return 1; } int ph_LeaveFullScreen(_THIS) { PgDisplaySettings_t oldmode_settings; if (currently_fullscreen) { if ((this->screen) && (this->screen->flags & SDL_INTERNALOPENGL)) { #if !SDL_VIDEO_OPENGL || (_NTO_VERSION < 630) return 0; #endif } /* release routines starts here */ { if (OCImage.direct_context) { PdDirectStop(OCImage.direct_context); PdReleaseDirectContext(OCImage.direct_context); OCImage.direct_context = NULL; } if (OCImage.oldDC) { PhDCSetCurrent(OCImage.oldDC); OCImage.oldDC = NULL; } currently_fullscreen = 0; /* Restore old video mode */ if (old_video_mode != -1) { oldmode_settings.mode = (unsigned short) old_video_mode; oldmode_settings.refresh = (unsigned short) old_refresh_rate; oldmode_settings.flags = 0; if (PgSetVideoMode(&oldmode_settings) < 0) { SDL_SetError ("Ph_LeaveFullScreen(): PgSetVideoMode() function failed !\n"); return 0; } } old_video_mode = -1; old_refresh_rate = -1; } } return 1; } /* vi: set ts=4 sw=4 expandtab: */