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Diffstat (limited to 'distrib/sdl-1.2.15/src/video/riscos/SDL_riscosvideo.c')
-rw-r--r--distrib/sdl-1.2.15/src/video/riscos/SDL_riscosvideo.c316
1 files changed, 316 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/video/riscos/SDL_riscosvideo.c b/distrib/sdl-1.2.15/src/video/riscos/SDL_riscosvideo.c
new file mode 100644
index 0000000..bae5e37
--- /dev/null
+++ b/distrib/sdl-1.2.15/src/video/riscos/SDL_riscosvideo.c
@@ -0,0 +1,316 @@
+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2012 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, &regs, &regs);
+ 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;
+}
+
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