Mercurial > sdl-ios-xcode
view src/video/riscos/SDL_riscosvideo.c @ 2670:6e4669f4db49 gsoc2008_nds
Fix for the previous commit: actually 'svn add'ed some files.
author | Darren Alton <dalton@stevens.edu> |
---|---|
date | Tue, 10 Jun 2008 06:57:57 +0000 |
parents | c121d94672cb |
children | e1da92da346c |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 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 */ #include "SDL_config.h" /* File added by Alan Buckley (alan_baa@hotmail.com) for RISC OS compatability 23 March 2003 Implements RISC OS display device management. Routines for full screen and wimp modes are split into other source files. */ #include "SDL_video.h" #include "SDL_mouse.h" #include "SDL_syswm.h" #include "../SDL_sysvideo.h" #include "../SDL_pixels_c.h" #include "../../events/SDL_events_c.h" #include "SDL_riscostask.h" #include "SDL_riscosvideo.h" #include "SDL_riscosevents_c.h" #include "SDL_riscosmouse_c.h" #include "kernel.h" #include "swis.h" #define RISCOSVID_DRIVER_NAME "riscos" /* Initialization/Query functions */ static int RISCOS_VideoInit(_THIS, SDL_PixelFormat * vformat); static void RISCOS_VideoQuit(_THIS); static SDL_Rect **RISCOS_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags); static SDL_Surface *RISCOS_SetVideoMode(_THIS, SDL_Surface * current, int width, int height, int bpp, Uint32 flags); int RISCOS_GetWmInfo(_THIS, SDL_SysWMinfo * info); int RISCOS_ToggleFullScreen(_THIS, int fullscreen); /* Mouse checking */ void RISCOS_CheckMouseMode(_THIS); extern SDL_GrabMode RISCOS_GrabInput(_THIS, SDL_GrabMode mode); /* Fullscreen mode functions */ extern SDL_Surface *FULLSCREEN_SetVideoMode(_THIS, SDL_Surface * current, int width, int height, int bpp, Uint32 flags); extern void FULLSCREEN_BuildModeList(_THIS); extern void FULLSCREEN_SetDeviceMode(_THIS); extern int FULLSCREEN_ToggleFromWimp(_THIS); /* Wimp mode functions */ extern SDL_Surface *WIMP_SetVideoMode(_THIS, SDL_Surface * current, int width, int height, int bpp, Uint32 flags); extern void WIMP_DeleteWindow(_THIS); extern int WIMP_ToggleFromFullScreen(_THIS); /* Hardware surface functions - common to WIMP and FULLSCREEN */ static int RISCOS_AllocHWSurface(_THIS, SDL_Surface * surface); static int RISCOS_LockHWSurface(_THIS, SDL_Surface * surface); static void RISCOS_UnlockHWSurface(_THIS, SDL_Surface * surface); static void RISCOS_FreeHWSurface(_THIS, SDL_Surface * surface); /* RISC OS driver bootstrap functions */ static int RISCOS_Available(void) { return (1); } static void RISCOS_DeleteDevice(SDL_VideoDevice * device) { SDL_free(device->hidden); SDL_free(device); } static SDL_VideoDevice * RISCOS_CreateDevice(int devindex) { SDL_VideoDevice *device; /* Initialize all variables that we clean on shutdown */ device = (SDL_VideoDevice *) SDL_malloc(sizeof(SDL_VideoDevice)); if (device) { SDL_memset(device, 0, (sizeof *device)); device->hidden = (struct SDL_PrivateVideoData *) SDL_malloc((sizeof *device->hidden)); } if ((device == NULL) || (device->hidden == NULL)) { SDL_OutOfMemory(); if (device) { SDL_free(device); } return (0); } SDL_memset(device->hidden, 0, (sizeof *device->hidden)); /* Set the function pointers */ device->VideoInit = RISCOS_VideoInit; device->VideoQuit = RISCOS_VideoQuit; device->ListModes = RISCOS_ListModes; device->SetVideoMode = RISCOS_SetVideoMode; device->CreateYUVOverlay = NULL; device->AllocHWSurface = RISCOS_AllocHWSurface; device->CheckHWBlit = NULL; device->FillHWRect = NULL; device->SetHWColorKey = NULL; device->SetHWAlpha = NULL; device->LockHWSurface = RISCOS_LockHWSurface; device->UnlockHWSurface = RISCOS_UnlockHWSurface; device->FreeHWSurface = RISCOS_FreeHWSurface; device->FreeWMCursor = RISCOS_FreeWMCursor; device->CreateWMCursor = RISCOS_CreateWMCursor; device->CheckMouseMode = RISCOS_CheckMouseMode; device->GrabInput = RISCOS_GrabInput; device->InitOSKeymap = RISCOS_InitOSKeymap; device->GetWMInfo = RISCOS_GetWmInfo; device->free = RISCOS_DeleteDevice; /* Can't get Toggle screen to work if program starts up in Full screen mode so disable it here and re-enable it when a wimp screen is chosen */ device->ToggleFullScreen = NULL; /*RISCOS_ToggleFullScreen; */ /* Set other entries for fullscreen mode */ FULLSCREEN_SetDeviceMode(device); /* Mouse pointer needs to use the WIMP ShowCursor version so that it doesn't modify the pointer until the SDL Window is entered or the application goes full screen */ device->ShowWMCursor = WIMP_ShowWMCursor; return device; } VideoBootStrap RISCOS_bootstrap = { RISCOSVID_DRIVER_NAME, "RISC OS video driver", RISCOS_Available, RISCOS_CreateDevice }; int RISCOS_VideoInit(_THIS, SDL_PixelFormat * vformat) { _kernel_swi_regs regs; int vars[4], vals[3]; if (RISCOS_InitTask() == 0) { SDL_SetError("Unable to start task"); return 0; } vars[0] = 9; /* Log base 2 bpp */ vars[1] = 11; /* XWndLimit - num x pixels -1 */ vars[2] = 12; /* YWndLimit - num y pixels -1 */ vars[3] = -1; /* Terminate list */ regs.r[0] = (int) vars; regs.r[1] = (int) vals; _kernel_swi(OS_ReadVduVariables, ®s, ®s); vformat->BitsPerPixel = (1 << vals[0]); /* Determine the current screen size */ this->info.current_w = vals[1] + 1; this->info.current_h = vals[2] + 1; /* Minimum bpp for SDL is 8 */ if (vformat->BitsPerPixel < 8) vformat->BitsPerPixel = 8; switch (vformat->BitsPerPixel) { case 15: case 16: vformat->Bmask = 0x00007c00; vformat->Gmask = 0x000003e0; vformat->Rmask = 0x0000001f; vformat->BitsPerPixel = 16; /* SDL wants actual number of bits used */ vformat->BytesPerPixel = 2; break; case 24: case 32: vformat->Bmask = 0x00ff0000; vformat->Gmask = 0x0000ff00; vformat->Rmask = 0x000000ff; vformat->BytesPerPixel = 4; break; default: vformat->Bmask = 0; vformat->Gmask = 0; vformat->Rmask = 0; vformat->BytesPerPixel = 1; break; } /* Fill in some window manager capabilities */ this->info.wm_available = 1; /* We're done! */ return (0); } /* Note: If we are terminated, this could be called in the middle of another SDL video routine -- notably UpdateRects. */ void RISCOS_VideoQuit(_THIS) { RISCOS_ExitTask(); if (this->hidden->alloc_bank) SDL_free(this->hidden->alloc_bank); this->hidden->alloc_bank = 0; } SDL_Rect ** RISCOS_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags) { if (flags & SDL_FULLSCREEN) { /* Build mode list when first required. */ if (SDL_nummodes[0] == 0) FULLSCREEN_BuildModeList(this); return (SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]); } else return (SDL_Rect **) - 1; } /* Set up video mode */ SDL_Surface * RISCOS_SetVideoMode(_THIS, SDL_Surface * current, int width, int height, int bpp, Uint32 flags) { if (flags & SDL_FULLSCREEN) { RISCOS_StoreWimpMode(); /* Dump wimp window on switch to full screen */ if (this->hidden->window_handle) WIMP_DeleteWindow(this); return FULLSCREEN_SetVideoMode(this, current, width, height, bpp, flags); } else { RISCOS_RestoreWimpMode(); return WIMP_SetVideoMode(this, current, width, height, bpp, flags); } } /* We don't actually allow hardware surfaces other than the main one */ static int RISCOS_AllocHWSurface(_THIS, SDL_Surface * surface) { return (-1); } static void RISCOS_FreeHWSurface(_THIS, SDL_Surface * surface) { return; } /* We need to wait for vertical retrace on page flipped displays */ static int RISCOS_LockHWSurface(_THIS, SDL_Surface * surface) { return (0); } static void RISCOS_UnlockHWSurface(_THIS, SDL_Surface * surface) { return; } int RISCOS_GetWmInfo(_THIS, SDL_SysWMinfo * info) { SDL_VERSION(&(info->version)); info->wimpVersion = RISCOS_GetWimpVersion(); info->taskHandle = RISCOS_GetTaskHandle(); info->window = this->hidden->window_handle; return 1; } /* Toggle full screen mode. Returns 1 if successful otherwise 0 */ int RISCOS_ToggleFullScreen(_THIS, int fullscreen) { if (fullscreen) { return FULLSCREEN_ToggleFromWimp(this); } else { return WIMP_ToggleFromFullScreen(this); } return 0; } /* vi: set ts=4 sw=4 expandtab: */