1/* Copyright (c) 2013-2014 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#include "gba.h"
  7#include "gba-video.h"
  8
  9#include "renderers/video-software.h"
 10#include "util/memory.h"
 11
 12#include "3ds-vfs.h"
 13
 14#include <3ds.h>
 15
 16int main() {
 17	srvInit();
 18	aptInit();
 19	hidInit(0);
 20	gfxInit();
 21	fsInit();
 22
 23#ifdef COLOR_16_BIT
 24#ifdef COLOR_5_6_5
 25	gfxSetScreenFormat(GFX_BOTTOM, GSP_RGB565_OES);
 26#else
 27	gfxSetScreenFormat(GFX_BOTTOM, GSP_RGB5_A1_OES);
 28#endif
 29#else
 30	gfxSetScreenFormat(GFX_BOTTOM, GSP_RGBA8_OES);
 31#endif
 32
 33	struct GBAVideoSoftwareRenderer renderer;
 34	GBAVideoSoftwareRendererCreate(&renderer);
 35
 36	size_t stride = VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL;
 37	color_t* videoBuffer = anonymousMemoryMap(stride * VIDEO_VERTICAL_PIXELS);
 38	memset(videoBuffer, 0xFF, stride * VIDEO_VERTICAL_PIXELS);
 39	struct GBA* gba = anonymousMemoryMap(sizeof(struct GBA));
 40	struct ARMCore* cpu = anonymousMemoryMap(sizeof(struct ARMCore));
 41	int activeKeys = 0;
 42
 43	renderer.outputBuffer = videoBuffer;
 44	renderer.outputBufferStride = VIDEO_HORIZONTAL_PIXELS;
 45
 46	gba->keySource = &activeKeys;
 47	gba->sync = 0;
 48
 49	FS_archive sdmcArchive = (FS_archive) {
 50		ARCH_SDMC,
 51		(FS_path) { PATH_EMPTY, 1, (u8*)"" },
 52		0, 0
 53	};
 54	FSUSER_OpenArchive(0, &sdmcArchive);
 55
 56	struct VFile* rom = VFileOpen3DS(sdmcArchive, "/rom.gba", FS_OPEN_READ);
 57
 58	struct VFile* save = VFileOpen3DS(sdmcArchive, "/rom.sav", FS_OPEN_WRITE | FS_OPEN_CREATE);
 59
 60	GBACreate(gba);
 61	ARMSetComponents(cpu, &gba->d, 0, 0);
 62	ARMInit(cpu);
 63
 64	GBAVideoAssociateRenderer(&gba->video, &renderer.d);
 65
 66	GBALoadROM(gba, rom, save, 0);
 67
 68	ARMReset(cpu);
 69
 70	bool inVblank = false;
 71	while (aptMainLoop()) {
 72		ARMRunLoop(cpu);
 73
 74		if (!inVblank) {
 75			if (GBARegisterDISPSTATIsInVblank(gba->video.dispstat)) {
 76				u16 width, height;
 77				u8* screen = gfxGetFramebuffer(GFX_BOTTOM, GFX_BOTTOM, &width, &height);
 78				memcpy(screen, videoBuffer, stride * VIDEO_VERTICAL_PIXELS);
 79				gfxFlushBuffers();
 80				gfxSwapBuffersGpu();
 81				gspWaitForEvent(GSPEVENT_VBlank0, false);
 82				hidScanInput();
 83			}
 84		}
 85		inVblank = GBARegisterDISPSTATGetInVblank(gba->video.dispstat);
 86	}
 87
 88	ARMDeinit(cpu);
 89	GBADestroy(gba);
 90
 91	rom->close(rom);
 92	save->close(save);
 93
 94	mappedMemoryFree(gba, 0);
 95	mappedMemoryFree(cpu, 0);
 96
 97	mappedMemoryFree(videoBuffer, 0);
 98
 99	fsExit();
100	gfxExit();
101	hidExit();
102	aptExit();
103	srvExit();
104	return 0;
105}