--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/nds/SDL_ndsvideo.c	Tue Jun 10 06:57:57 2008 +0000
@@ -0,0 +1,174 @@
+/*
+    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"
+
+/* 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@icculus.org). 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 <nds.h>
+
+#include "SDL_video.h"
+#include "SDL_mouse.h"
+#include "../SDL_sysvideo.h"
+#include "../SDL_pixels_c.h"
+#include "../../events/SDL_events_c.h"
+
+#include "SDL_ndsvideo.h"
+#include "SDL_ndsevents_c.h"
+#include "SDL_ndsrender_c.h"
+
+#define NDSVID_DRIVER_NAME "nds"
+
+/* Initialization/Query functions */
+static int NDS_VideoInit(_THIS);
+static int NDS_SetDisplayMode(_THIS, SDL_DisplayMode * mode);
+static void NDS_VideoQuit(_THIS);
+
+/* DUMMY driver bootstrap functions */
+
+static int
+NDS_Available(void)
+{
+    const char *envr = SDL_getenv("SDL_VIDEODRIVER");
+	printf("NDS_Available()\n");
+    return (1);
+}
+
+static void
+NDS_DeleteDevice(SDL_VideoDevice * device)
+{
+    SDL_free(device);
+}
+
+static SDL_VideoDevice *
+NDS_CreateDevice(int devindex)
+{
+    SDL_VideoDevice *device;
+	printf("NDS_CreateDevice(%d)\n", devindex);
+
+    /* Initialize all variables that we clean on shutdown */
+    device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
+    if (!device) {
+        SDL_OutOfMemory();
+        if (device) {
+            SDL_free(device);
+        }
+        return (0);
+    }
+
+    /* Set the function pointers */
+    device->VideoInit = NDS_VideoInit;
+    device->VideoQuit = NDS_VideoQuit;
+    device->SetDisplayMode = NDS_SetDisplayMode;
+    device->PumpEvents = NDS_PumpEvents;
+
+    device->num_displays = 2; /* DS = dual screens */
+
+    device->free = NDS_DeleteDevice;
+
+    return device;
+}
+
+VideoBootStrap NDS_bootstrap = {
+    NDSVID_DRIVER_NAME, "SDL NDS video driver",
+    NDS_Available, NDS_CreateDevice
+};
+
+int
+NDS_VideoInit(_THIS)
+{
+    SDL_DisplayMode mode;
+    int i;
+
+    /* simple 256x192x16x60 for now */
+    mode.w = 256;  mode.h = 192;
+    mode.format = SDL_PIXELFORMAT_ARGB1555;
+    mode.refresh_rate = 60;
+    mode.driverdata = NULL;
+
+    SDL_AddBasicVideoDisplay(&mode);
+    SDL_AddRenderDriver(0, &SDL_NDS_RenderDriver);
+
+    SDL_zero(mode);
+    SDL_AddDisplayMode(0, &mode);
+
+	/* hackish stuff to get things up and running for now, and for a console */
+	powerON(POWER_ALL);
+	videoSetMode(MODE_FB0);
+	videoSetModeSub(MODE_0_2D | DISPLAY_BG0_ACTIVE); /* debug text on sub */
+	vramSetBankA(VRAM_A_LCD);
+	vramSetBankC(VRAM_C_SUB_BG);
+	irqInit();
+	irqEnable(IRQ_VBLANK);
+    /* set up console for debug text 'n stuff */
+    SUB_BG0_CR = BG_MAP_BASE(31); BG_PALETTE_SUB[255] = RGB15(31,31,31);
+	consoleInitDefault((u16*)SCREEN_BASE_BLOCK_SUB(31),
+	                   (u16*)CHAR_BASE_BLOCK_SUB(0), 16);
+    for(i = 0; i < 256*192; ++i) {
+		((u16*)VRAM_A)[i] = i;
+	}
+	for(i = 0; i < 60; ++i) swiWaitForVBlank();
+    /*NDS_SetDisplayMode(_this, &mode);*/
+    return 0;
+}
+
+static int
+NDS_SetDisplayMode(_THIS, SDL_DisplayMode * mode)
+{
+	/* right now this function is just hard-coded for 256x192 ARGB1555 */
+#if 0
+	videoSetMode(MODE_5_2D | DISPLAY_BG3_ACTIVE); /* display on main core */
+    videoSetModeSub(MODE_0_2D | DISPLAY_BG0_ACTIVE); /* debug text on sub */
+    vramSetMainBanks(VRAM_A_MAIN_BG_0x06000000, VRAM_B_LCD,
+                     VRAM_C_SUB_BG, VRAM_D_LCD);
+
+    /* maps well to the 256x192 screen anyway.  note: need VRAM_B for bigger */
+    BG3_CR = BG_BMP16_256x256;
+    /* affine transformation matrix.  nothing too fancy here */
+	BG3_XDX = 0x100;    BG3_XDY = 0;
+	BG3_YDX = 0;        BG3_YDY = 0x100;
+	/* x/y position */
+	BG3_CX = 0;         BG3_CY = 0;
+#endif
+    return 0;
+}
+
+void
+NDS_VideoQuit(_THIS)
+{
+}
+
+/* vi: set ts=4 sw=4 expandtab: */