From ca42faae3c397fb480966637ba99bdda85e7a644 Mon Sep 17 00:00:00 2001
From: Jeffrey Pfau <jeffrey@endrift.com>
Date: Sat, 22 Aug 2015 17:22:25 -0700
Subject: [PATCH] 3DS: Use GBAContext

---
 src/platform/3ds/main.c | 91 ++++++++++++++++-------------------------
 1 file changed, 36 insertions(+), 55 deletions(-)

diff --git a/src/platform/3ds/main.c b/src/platform/3ds/main.c
index 9d6305978..5f1449f56 100644
--- a/src/platform/3ds/main.c
+++ b/src/platform/3ds/main.c
@@ -3,10 +3,10 @@
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-#include "gba/gba.h"
-#include "gba/video.h"
 
 #include "gba/renderers/video-software.h"
+#include "gba/supervisor/context.h"
+#include "gba/video.h"
 #include "util/memory.h"
 
 #include "3ds-vfs.h"
@@ -19,6 +19,7 @@ static void GBA3DSLog(struct GBAThread* thread, enum GBALogLevel level, const ch
 static Handle logFile;
 
 int main() {
+	struct GBAContext context;
 	srvInit();
 	aptInit();
 	hidInit(0);
@@ -32,71 +33,51 @@ int main() {
 	FSUSER_OpenArchive(0, &sdmcArchive);
 	FSUSER_OpenFile(0, &logFile, sdmcArchive, FS_makePath(PATH_CHAR, "/mgba.log"), FS_OPEN_WRITE | FS_OPEN_CREATE, FS_ATTRIBUTE_NONE);
 
+	GBAContextInit(&context, 0);
+	struct GBAOptions opts = {
+		.useBios = true,
+		.logLevel = 0,
+		.idleOptimization = IDLE_LOOP_REMOVE
+	};
+	GBAConfigLoadDefaults(&context.config, &opts);
+	context.gba->logHandler = GBA3DSLog;
+
 	struct GBAVideoSoftwareRenderer renderer;
 	GBAVideoSoftwareRendererCreate(&renderer);
-
 	size_t stride = VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL;
 	color_t* videoBuffer = anonymousMemoryMap(stride * VIDEO_VERTICAL_PIXELS);
-	struct GBA* gba = anonymousMemoryMap(sizeof(struct GBA));
-	struct ARMCore* cpu = anonymousMemoryMap(sizeof(struct ARMCore));
-	int activeKeys = 0;
-
 	renderer.outputBuffer = videoBuffer;
 	renderer.outputBufferStride = VIDEO_HORIZONTAL_PIXELS;
+	GBAVideoAssociateRenderer(&context.gba->video, &renderer.d);
 
-	struct VFile* rom = VFileOpen3DS(&sdmcArchive, "/rom.gba", FS_OPEN_READ);
-	struct VFile* save = VFileOpen3DS(&sdmcArchive, "/rom.sav", FS_OPEN_READ | FS_OPEN_WRITE);
+	GBAContextLoadROM(&context, "/rom.gba", true);
+	GBAContextStart(&context);
 
-	GBACreate(gba);
-	ARMSetComponents(cpu, &gba->d, 0, 0);
-	ARMInit(cpu);
-
-	gba->keySource = &activeKeys;
-	gba->sync = 0;
-
-	GBAVideoAssociateRenderer(&gba->video, &renderer.d);
-
-	GBALoadROM(gba, rom, save, 0);
-
-	gba->logHandler = GBA3DSLog;
-
-	ARMReset(cpu);
-
-	int frameCounter = 0;
 	while (aptMainLoop()) {
-		ARMRunLoop(cpu);
-
-		if (frameCounter != gba->video.frameCounter) {
-			u16 width, height;
-			u16* screen = (u16*) gfxGetFramebuffer(GFX_BOTTOM, GFX_BOTTOM, &height, &width);
-			u32 startX = (width - VIDEO_HORIZONTAL_PIXELS) / 2;
-			u32 startY = (height + VIDEO_VERTICAL_PIXELS) / 2 - 1;
-			u32 x, y;
-			for (y = 0; y < VIDEO_VERTICAL_PIXELS; ++y) {
-				for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x) {
-					screen[startY - y + (startX + x) * height] = videoBuffer[y * VIDEO_HORIZONTAL_PIXELS + x];
-				}
-			}
-			gfxFlushBuffers();
-			gfxSwapBuffers();
-			gspWaitForVBlank1();
-			hidScanInput();
-			activeKeys = hidKeysHeld() & 0x3FF;
-			if (hidKeysDown() & KEY_X) {
-				break;
-			}
-			frameCounter = gba->video.frameCounter;
+		hidScanInput();
+		int activeKeys = hidKeysHeld() & 0x3FF;
+		if (hidKeysDown() & KEY_X) {
+			break;
 		}
+		GBAContextFrame(&context, activeKeys);
+
+		u16 width, height;
+		u16* screen = (u16*) gfxGetFramebuffer(GFX_BOTTOM, GFX_BOTTOM, &height, &width);
+		u32 startX = (width - VIDEO_HORIZONTAL_PIXELS) / 2;
+		u32 startY = (height + VIDEO_VERTICAL_PIXELS) / 2 - 1;
+		u32 x, y;
+		for (y = 0; y < VIDEO_VERTICAL_PIXELS; ++y) {
+			for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x) {
+				screen[startY - y + (startX + x) * height] = videoBuffer[y * VIDEO_HORIZONTAL_PIXELS + x];
+			}
+		}
+		gfxFlushBuffers();
+		gfxSwapBuffers();
+		gspWaitForVBlank1();
 	}
 
-	ARMDeinit(cpu);
-	GBADestroy(gba);
-
-	rom->close(rom);
-	save->close(save);
-
-	mappedMemoryFree(gba, 0);
-	mappedMemoryFree(cpu, 0);
+	GBAContextStop(&context);
+	GBAContextDeinit(&context);
 
 	mappedMemoryFree(videoBuffer, 0);