Qr stuff (#32)

QRs are now scanned and decoded, but they aren't downloaded.

source/camera.c

@@ -0,0 +1,73 @@
+/*
+*   This file is part of Anemone3DS
+*   Copyright (C) 2016-2017 Alex Taber ("astronautlevel"), Dawid Eckert ("daedreth")
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program 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 General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b and 7.c of GPLv3 apply to this file:
+*       * Requiring preservation of specified reasonable legal notices or
+*         author attributions in that material or in the Appropriate Legal
+*         Notices displayed by works containing it.
+*       * Prohibiting misrepresentation of the origin of that material,
+*         or requiring that modified versions of such material be marked in
+*         reasonable ways as different from the original version.
+*/
+
+#include "camera.h"
+
+#include "quirc/quirc.h"
+#include "pp2d/pp2d/pp2d.h"
+#include "draw.h"
+
+void init_qr(void)
+{
+	camInit();
+	CAMU_SetSize(SELECT_OUT1, SIZE_CTR_TOP_LCD, CONTEXT_A);
+	CAMU_SetOutputFormat(SELECT_OUT1, OUTPUT_RGB_565, CONTEXT_A);
+
+	CAMU_SetNoiseFilter(SELECT_OUT1, true);
+	CAMU_SetAutoExposure(SELECT_OUT1, true);
+	CAMU_SetAutoWhiteBalance(SELECT_OUT1, true);
+
+	CAMU_SetTrimming(PORT_CAM1, false);
+
+	buf = malloc(sizeof(u16) * 400 * 240);
+
+	context = quirc_new();
+	quirc_resize(context, 400, 240);
+}
+
+void exit_qr(void)
+{
+	CAMU_Activate(SELECT_NONE);
+	camExit();
+	quirc_destroy(context);
+	free(buf);
+}
+
+void take_picture(void)
+{
+	u32 transfer_size;
+	Handle cam_handle = 0;
+	CAMU_GetMaxBytes(&transfer_size, 400, 240);
+	CAMU_SetTransferBytes(PORT_CAM1, transfer_size, 400, 240);
+	CAMU_Activate(SELECT_OUT1);
+	CAMU_ClearBuffer(PORT_CAM1);
+	CAMU_StartCapture(PORT_CAM1);
+	CAMU_SetReceiving(&cam_handle, buf, PORT_CAM1, 400 * 240 * 2, transfer_size);
+	svcWaitSynchronization(cam_handle, U64_MAX);
+	CAMU_StopCapture(PORT_CAM1);
+	svcCloseHandle(cam_handle);
+	CAMU_Activate(PORT_NONE);
+}