--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/nds/SDL_ndsvideo.c	Wed Aug 27 15:10:03 2008 +0000
@@ -0,0 +1,168 @@
+/*
+    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"
+
+/* SDL Nintendo DS video driver implementation
+ * based on dummy driver:
+ *  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 <nds/arm9/video.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);
+
+
+/* SDL NDS driver bootstrap functions */
+static int
+NDS_Available(void)
+{
+    return (1);                 /* always here */
+}
+
+static void
+NDS_DeleteDevice(SDL_VideoDevice * device)
+{
+    SDL_free(device);
+}
+
+static SDL_VideoDevice *
+NDS_CreateDevice(int devindex)
+{
+    SDL_VideoDevice *device;
+
+    /* 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_ABGR1555;
+    mode.refresh_rate = 60;
+    mode.driverdata = NULL;
+
+    SDL_AddBasicVideoDisplay(&mode);
+    SDL_AddRenderDriver(0, &NDS_RenderDriver);
+
+    SDL_zero(mode);
+    SDL_AddDisplayMode(0, &mode);
+
+    powerON(POWER_ALL_2D);
+    irqInit();
+    irqEnable(IRQ_VBLANK);
+    NDS_SetDisplayMode(_this, &mode);
+
+    return 0;
+}
+
+static int
+NDS_SetDisplayMode(_THIS, SDL_DisplayMode * mode)
+{
+    /* right now this function is just hard-coded for 256x192 ABGR1555 */
+    videoSetMode(MODE_5_2D | DISPLAY_BG2_ACTIVE | DISPLAY_BG3_ACTIVE | DISPLAY_BG_EXT_PALETTE | DISPLAY_SPR_1D_LAYOUT | DISPLAY_SPR_1D_BMP | DISPLAY_SPR_1D_BMP_SIZE_256 |      /* (try 128 if 256 is trouble.) */
+                 DISPLAY_SPR_ACTIVE | DISPLAY_SPR_EXT_PALETTE); /* display on main core
+                                                                   with lots of flags set for
+                                                                   flexibility/capacity to render */
+
+    /* hopefully these cover all the various things we might need to do */
+    vramSetBankA(VRAM_A_MAIN_BG_0x06000000);
+    vramSetBankB(VRAM_B_MAIN_BG_0x06020000);
+    vramSetBankC(VRAM_C_SUB_BG_0x06200000);
+    vramSetBankD(VRAM_D_MAIN_BG_0x06040000);    /* not a typo. vram d can't sub */
+    vramSetBankE(VRAM_E_MAIN_SPRITE);
+    vramSetBankF(VRAM_F_OBJ_EXT_PALETTE);
+    vramSetBankG(VRAM_G_BG_EXT_PALETTE);
+    vramSetBankH(VRAM_H_SUB_BG_EXT_PALETTE);
+    vramSetBankI(VRAM_I_SUB_SPRITE);
+
+    videoSetModeSub(MODE_0_2D | DISPLAY_BG0_ACTIVE);    /* debug text on sub
+                                                           TODO: this will change
+                                                           when multi-head is
+                                                           introduced in render */
+
+    return 0;
+}
+
+void
+NDS_VideoQuit(_THIS)
+{
+    videoSetMode(DISPLAY_SCREEN_OFF);
+    videoSetModeSub(DISPLAY_SCREEN_OFF);
+    vramSetMainBanks(VRAM_A_LCD, VRAM_B_LCD, VRAM_C_LCD, VRAM_D_LCD);
+    vramSetBankE(VRAM_E_LCD);
+    vramSetBankF(VRAM_F_LCD);
+    vramSetBankG(VRAM_G_LCD);
+    vramSetBankH(VRAM_H_LCD);
+    vramSetBankI(VRAM_I_LCD);
+}
+
+/* vi: set ts=4 sw=4 expandtab: */