--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/dummy/SDL_nullvideo.c	Thu Apr 26 16:50:19 2001 +0000
@@ -0,0 +1,245 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997, 1998, 1999, 2000, 2001  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@devolution.com
+*/
+
+#ifdef SAVE_RCSID
+static char rcsid =
+ "@(#) $Id$";
+#endif
+
+/* Dummy SDL video driver implementation; this is just enough to make an
+ *  SDL-based application THINK it's got a working video driver, for
+ *  applications that call SDL_Init(SDL_INIT_VIDEO) when they don't need it,
+ *  and also for use as a collection of stubs when porting SDL to a new
+ *  platform for which you haven't yet written a valid video driver.
+ *
+ * This is also a great way to determine bottlenecks: if you think that SDL
+ *  is a performance problem for a given platform, enable this driver, and
+ *  then see if your application runs faster without video overhead.
+ *
+ * Initial work by Ryan C. Gordon (icculus@linuxgames.com). A good portion
+ *  of this was cut-and-pasted from Stephane Peter's work in the AAlib
+ *  SDL video driver.  Renamed to "DUMMY" by Sam Lantinga.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "SDL.h"
+#include "SDL_error.h"
+#include "SDL_video.h"
+#include "SDL_mouse.h"
+#include "SDL_sysvideo.h"
+#include "SDL_pixels_c.h"
+#include "SDL_events_c.h"
+
+#include "SDL_nullvideo.h"
+#include "SDL_nullevents_c.h"
+#include "SDL_nullmouse_c.h"
+
+/* Initialization/Query functions */
+static int DUMMY_VideoInit(_THIS, SDL_PixelFormat *vformat);
+static SDL_Rect **DUMMY_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
+static SDL_Surface *DUMMY_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
+static int DUMMY_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
+static void DUMMY_VideoQuit(_THIS);
+
+/* Hardware surface functions */
+static int DUMMY_AllocHWSurface(_THIS, SDL_Surface *surface);
+static int DUMMY_LockHWSurface(_THIS, SDL_Surface *surface);
+static int DUMMY_FlipHWSurface(_THIS, SDL_Surface *surface);
+static void DUMMY_UnlockHWSurface(_THIS, SDL_Surface *surface);
+static void DUMMY_FreeHWSurface(_THIS, SDL_Surface *surface);
+
+/* etc. */
+static void DUMMY_UpdateRects(_THIS, int numrects, SDL_Rect *rects);
+
+/* DUMMY driver bootstrap functions */
+
+static int DUMMY_Available(void)
+{
+	return 1; /* Always available ! */
+}
+
+static void DUMMY_DeleteDevice(SDL_VideoDevice *device)
+{
+	free(device->hidden);
+	free(device);
+}
+
+static SDL_VideoDevice *DUMMY_CreateDevice(int devindex)
+{
+	SDL_VideoDevice *device;
+
+	/* Initialize all variables that we clean on shutdown */
+	device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
+	if ( device ) {
+		memset(device, 0, (sizeof *device));
+		device->hidden = (struct SDL_PrivateVideoData *)
+				malloc((sizeof *device->hidden));
+	}
+	if ( (device == NULL) || (device->hidden == NULL) ) {
+		SDL_OutOfMemory();
+		if ( device ) {
+			free(device);
+		}
+		return(0);
+	}
+	memset(device->hidden, 0, (sizeof *device->hidden));
+
+	/* Set the function pointers */
+	device->VideoInit = DUMMY_VideoInit;
+	device->ListModes = DUMMY_ListModes;
+	device->SetVideoMode = DUMMY_SetVideoMode;
+	device->CreateYUVOverlay = NULL;
+	device->SetColors = DUMMY_SetColors;
+	device->UpdateRects = DUMMY_UpdateRects;
+	device->VideoQuit = DUMMY_VideoQuit;
+	device->AllocHWSurface = DUMMY_AllocHWSurface;
+	device->CheckHWBlit = NULL;
+	device->FillHWRect = NULL;
+	device->SetHWColorKey = NULL;
+	device->SetHWAlpha = NULL;
+	device->LockHWSurface = DUMMY_LockHWSurface;
+	device->UnlockHWSurface = DUMMY_UnlockHWSurface;
+	device->FlipHWSurface = NULL;
+	device->FreeHWSurface = DUMMY_FreeHWSurface;
+	device->SetCaption = NULL;
+	device->SetIcon = NULL;
+	device->IconifyWindow = NULL;
+	device->GrabInput = NULL;
+	device->GetWMInfo = NULL;
+	device->InitOSKeymap = DUMMY_InitOSKeymap;
+	device->PumpEvents = DUMMY_PumpEvents;
+
+	device->free = DUMMY_DeleteDevice;
+
+	return device;
+}
+
+VideoBootStrap DUMMY_bootstrap = {
+	"dummy", "SDL dummy video driver",
+	DUMMY_Available, DUMMY_CreateDevice
+};
+
+
+int DUMMY_VideoInit(_THIS, SDL_PixelFormat *vformat)
+{
+	fprintf(stderr, "WARNING: You are using the SDL dummy video driver!\n");
+
+	/* Determine the screen depth (use default 8-bit depth) */
+	/* we change this during the SDL_SetVideoMode implementation... */
+	vformat->BitsPerPixel = 8;
+	vformat->BytesPerPixel = 1;
+
+	/* We're done! */
+	return(0);
+}
+
+SDL_Rect **DUMMY_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
+{
+   	 return (SDL_Rect **) -1;
+}
+
+SDL_Surface *DUMMY_SetVideoMode(_THIS, SDL_Surface *current,
+				int width, int height, int bpp, Uint32 flags)
+{
+	if ( this->hidden->buffer ) {
+		free( this->hidden->buffer );
+	}
+
+	this->hidden->buffer = malloc(width * height * (bpp / 8));
+	if ( ! this->hidden->buffer ) {
+		SDL_SetError("Couldn't allocate buffer for requested mode");
+		return(NULL);
+	}
+
+/* 	printf("Setting mode %dx%d\n", width, height); */
+
+	memset(this->hidden->buffer, 0, width * height * (bpp / 8));
+
+	/* Allocate the new pixel format for the screen */
+	if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) {
+		free(this->hidden->buffer);
+		this->hidden->buffer = NULL;
+		SDL_SetError("Couldn't allocate new pixel format for requested mode");
+		return(NULL);
+	}
+
+	/* Set up the new mode framebuffer */
+	current->flags = flags & SDL_FULLSCREEN;
+	this->hidden->w = current->w = width;
+	this->hidden->h = current->h = height;
+	current->pitch = current->w * (bpp / 8);
+	current->pixels = this->hidden->buffer;
+
+	/* We're done */
+	return(current);
+}
+
+/* We don't actually allow hardware surfaces other than the main one */
+static int DUMMY_AllocHWSurface(_THIS, SDL_Surface *surface)
+{
+	return(-1);
+}
+static void DUMMY_FreeHWSurface(_THIS, SDL_Surface *surface)
+{
+	return;
+}
+
+/* We need to wait for vertical retrace on page flipped displays */
+static int DUMMY_LockHWSurface(_THIS, SDL_Surface *surface)
+{
+	return(0);
+}
+
+static void DUMMY_UnlockHWSurface(_THIS, SDL_Surface *surface)
+{
+	return;
+}
+
+static int DUMMY_FlipHWSurface(_THIS, SDL_Surface *surface)
+{
+	return(0);
+}
+
+static void DUMMY_UpdateRects(_THIS, int numrects, SDL_Rect *rects)
+{
+	/* do nothing. */
+}
+
+int DUMMY_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
+{
+	/* do nothing of note. */
+	return(1);
+}
+
+/* Note:  If we are terminated, this could be called in the middle of
+   another SDL video routine -- notably UpdateRects.
+*/
+void DUMMY_VideoQuit(_THIS)
+{
+	if (this->screen->pixels != NULL)
+	{
+		free(this->screen->pixels);
+		this->screen->pixels = NULL;
+	}
+}