diff --git a/ap/app/qrencode/qrspec.c b/ap/app/qrencode/qrspec.c
new file mode 100644
index 0000000..a42706f
--- /dev/null
+++ b/ap/app/qrencode/qrspec.c
@@ -0,0 +1,562 @@
+/*
+ * qrencode - QR Code encoder
+ *
+ * QR Code specification in convenient format. 
+ * Copyright (C) 2006-2011 Kentaro Fukuchi <kentaro@fukuchi.org>
+ *
+ * The following data / specifications are taken from
+ * "Two dimensional symbol -- QR-code -- Basic Specification" (JIS X0510:2004)
+ *  or
+ * "Automatic identification and data capture techniques -- 
+ *  QR Code 2005 bar code symbology specification" (ISO/IEC 18004:2006)
+ *
+ * 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 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
+ */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#ifdef HAVE_LIBPTHREAD
+#include <pthread.h>
+#endif
+
+#include "qrspec.h"
+#include "qrinput.h"
+
+/******************************************************************************
+ * Version and capacity
+ *****************************************************************************/
+
+typedef struct {
+	int width; //< Edge length of the symbol
+	int words;  //< Data capacity (bytes)
+	int remainder; //< Remainder bit (bits)
+	int ec[4];  //< Number of ECC code (bytes)
+} QRspec_Capacity;
+
+/**
+ * Table of the capacity of symbols
+ * See Table 1 (pp.13) and Table 12-16 (pp.30-36), JIS X0510:2004.
+ */
+static const QRspec_Capacity qrspecCapacity[QRSPEC_VERSION_MAX + 1] = {
+	{  0,    0, 0, {   0,    0,    0,    0}},
+	{ 21,   26, 0, {   7,   10,   13,   17}}, // 1
+	{ 25,   44, 7, {  10,   16,   22,   28}},
+	{ 29,   70, 7, {  15,   26,   36,   44}},
+	{ 33,  100, 7, {  20,   36,   52,   64}},
+	{ 37,  134, 7, {  26,   48,   72,   88}}, // 5
+	{ 41,  172, 7, {  36,   64,   96,  112}},
+	{ 45,  196, 0, {  40,   72,  108,  130}},
+	{ 49,  242, 0, {  48,   88,  132,  156}},
+	{ 53,  292, 0, {  60,  110,  160,  192}},
+	{ 57,  346, 0, {  72,  130,  192,  224}}, //10
+	{ 61,  404, 0, {  80,  150,  224,  264}},
+	{ 65,  466, 0, {  96,  176,  260,  308}},
+	{ 69,  532, 0, { 104,  198,  288,  352}},
+	{ 73,  581, 3, { 120,  216,  320,  384}},
+	{ 77,  655, 3, { 132,  240,  360,  432}}, //15
+	{ 81,  733, 3, { 144,  280,  408,  480}},
+	{ 85,  815, 3, { 168,  308,  448,  532}},
+	{ 89,  901, 3, { 180,  338,  504,  588}},
+	{ 93,  991, 3, { 196,  364,  546,  650}},
+	{ 97, 1085, 3, { 224,  416,  600,  700}}, //20
+	{101, 1156, 4, { 224,  442,  644,  750}},
+	{105, 1258, 4, { 252,  476,  690,  816}},
+	{109, 1364, 4, { 270,  504,  750,  900}},
+	{113, 1474, 4, { 300,  560,  810,  960}},
+	{117, 1588, 4, { 312,  588,  870, 1050}}, //25
+	{121, 1706, 4, { 336,  644,  952, 1110}},
+	{125, 1828, 4, { 360,  700, 1020, 1200}},
+	{129, 1921, 3, { 390,  728, 1050, 1260}},
+	{133, 2051, 3, { 420,  784, 1140, 1350}},
+	{137, 2185, 3, { 450,  812, 1200, 1440}}, //30
+	{141, 2323, 3, { 480,  868, 1290, 1530}},
+	{145, 2465, 3, { 510,  924, 1350, 1620}},
+	{149, 2611, 3, { 540,  980, 1440, 1710}},
+	{153, 2761, 3, { 570, 1036, 1530, 1800}},
+	{157, 2876, 0, { 570, 1064, 1590, 1890}}, //35
+	{161, 3034, 0, { 600, 1120, 1680, 1980}},
+	{165, 3196, 0, { 630, 1204, 1770, 2100}},
+	{169, 3362, 0, { 660, 1260, 1860, 2220}},
+	{173, 3532, 0, { 720, 1316, 1950, 2310}},
+	{177, 3706, 0, { 750, 1372, 2040, 2430}} //40
+};
+
+int QRspec_getDataLength(int version, QRecLevel level)
+{
+	return qrspecCapacity[version].words - qrspecCapacity[version].ec[level];
+}
+
+int QRspec_getECCLength(int version, QRecLevel level)
+{
+	return qrspecCapacity[version].ec[level];
+}
+
+int QRspec_getMinimumVersion(int size, QRecLevel level)
+{
+	int i;
+	int words;
+
+	for(i=1; i<= QRSPEC_VERSION_MAX; i++) {
+		words  = qrspecCapacity[i].words - qrspecCapacity[i].ec[level];
+		if(words >= size) return i;
+	}
+
+	return -1;
+}
+
+int QRspec_getWidth(int version)
+{
+	return qrspecCapacity[version].width;
+}
+
+int QRspec_getRemainder(int version)
+{
+	return qrspecCapacity[version].remainder;
+}
+
+/******************************************************************************
+ * Length indicator
+ *****************************************************************************/
+
+static const int lengthTableBits[4][3] = {
+	{10, 12, 14},
+	{ 9, 11, 13},
+	{ 8, 16, 16},
+	{ 8, 10, 12}
+};
+
+int QRspec_lengthIndicator(QRencodeMode mode, int version)
+{
+	int l;
+
+	if(!QRinput_isSplittableMode(mode)) return 0;
+	if(version <= 9) {
+		l = 0;
+	} else if(version <= 26) {
+		l = 1;
+	} else {
+		l = 2;
+	}
+
+	return lengthTableBits[mode][l];
+}
+
+int QRspec_maximumWords(QRencodeMode mode, int version)
+{
+	int l;
+	int bits;
+	int words;
+
+	if(!QRinput_isSplittableMode(mode)) return 0;
+	if(version <= 9) {
+		l = 0;
+	} else if(version <= 26) {
+		l = 1;
+	} else {
+		l = 2;
+	}
+
+	bits = lengthTableBits[mode][l];
+	words = (1 << bits) - 1;
+	if(mode == QR_MODE_KANJI) {
+		words *= 2; // the number of bytes is required
+	}
+
+	return words;
+}
+
+/******************************************************************************
+ * Error correction code
+ *****************************************************************************/
+
+/**
+ * Table of the error correction code (Reed-Solomon block)
+ * See Table 12-16 (pp.30-36), JIS X0510:2004.
+ */
+static const int eccTable[QRSPEC_VERSION_MAX+1][4][2] = {
+	{{ 0,  0}, { 0,  0}, { 0,  0}, { 0,  0}},
+	{{ 1,  0}, { 1,  0}, { 1,  0}, { 1,  0}}, // 1
+	{{ 1,  0}, { 1,  0}, { 1,  0}, { 1,  0}},
+	{{ 1,  0}, { 1,  0}, { 2,  0}, { 2,  0}},
+	{{ 1,  0}, { 2,  0}, { 2,  0}, { 4,  0}},
+	{{ 1,  0}, { 2,  0}, { 2,  2}, { 2,  2}}, // 5
+	{{ 2,  0}, { 4,  0}, { 4,  0}, { 4,  0}},
+	{{ 2,  0}, { 4,  0}, { 2,  4}, { 4,  1}},
+	{{ 2,  0}, { 2,  2}, { 4,  2}, { 4,  2}},
+	{{ 2,  0}, { 3,  2}, { 4,  4}, { 4,  4}},
+	{{ 2,  2}, { 4,  1}, { 6,  2}, { 6,  2}}, //10
+	{{ 4,  0}, { 1,  4}, { 4,  4}, { 3,  8}},
+	{{ 2,  2}, { 6,  2}, { 4,  6}, { 7,  4}},
+	{{ 4,  0}, { 8,  1}, { 8,  4}, {12,  4}},
+	{{ 3,  1}, { 4,  5}, {11,  5}, {11,  5}},
+	{{ 5,  1}, { 5,  5}, { 5,  7}, {11,  7}}, //15
+	{{ 5,  1}, { 7,  3}, {15,  2}, { 3, 13}},
+	{{ 1,  5}, {10,  1}, { 1, 15}, { 2, 17}},
+	{{ 5,  1}, { 9,  4}, {17,  1}, { 2, 19}},
+	{{ 3,  4}, { 3, 11}, {17,  4}, { 9, 16}},
+	{{ 3,  5}, { 3, 13}, {15,  5}, {15, 10}}, //20
+	{{ 4,  4}, {17,  0}, {17,  6}, {19,  6}},
+	{{ 2,  7}, {17,  0}, { 7, 16}, {34,  0}},
+	{{ 4,  5}, { 4, 14}, {11, 14}, {16, 14}},
+	{{ 6,  4}, { 6, 14}, {11, 16}, {30,  2}},
+	{{ 8,  4}, { 8, 13}, { 7, 22}, {22, 13}}, //25
+	{{10,  2}, {19,  4}, {28,  6}, {33,  4}},
+	{{ 8,  4}, {22,  3}, { 8, 26}, {12, 28}},
+	{{ 3, 10}, { 3, 23}, { 4, 31}, {11, 31}},
+	{{ 7,  7}, {21,  7}, { 1, 37}, {19, 26}},
+	{{ 5, 10}, {19, 10}, {15, 25}, {23, 25}}, //30
+	{{13,  3}, { 2, 29}, {42,  1}, {23, 28}},
+	{{17,  0}, {10, 23}, {10, 35}, {19, 35}},
+	{{17,  1}, {14, 21}, {29, 19}, {11, 46}},
+	{{13,  6}, {14, 23}, {44,  7}, {59,  1}},
+	{{12,  7}, {12, 26}, {39, 14}, {22, 41}}, //35
+	{{ 6, 14}, { 6, 34}, {46, 10}, { 2, 64}},
+	{{17,  4}, {29, 14}, {49, 10}, {24, 46}},
+	{{ 4, 18}, {13, 32}, {48, 14}, {42, 32}},
+	{{20,  4}, {40,  7}, {43, 22}, {10, 67}},
+	{{19,  6}, {18, 31}, {34, 34}, {20, 61}},//40
+};
+
+void QRspec_getEccSpec(int version, QRecLevel level, int spec[5])
+{
+	int b1, b2;
+	int data, ecc;
+
+	b1 = eccTable[version][level][0];
+	b2 = eccTable[version][level][1];
+	data = QRspec_getDataLength(version, level);
+	ecc  = QRspec_getECCLength(version, level);
+
+	if(b2 == 0) {
+		spec[0] = b1;
+		spec[1] = data / b1;
+		spec[2] = ecc / b1;
+		spec[3] = spec[4] = 0;
+	} else {
+		spec[0] = b1;
+		spec[1] = data / (b1 + b2);
+		spec[2] = ecc  / (b1 + b2);
+		spec[3] = b2;
+		spec[4] = spec[1] + 1;
+	}
+}
+
+/******************************************************************************
+ * Alignment pattern
+ *****************************************************************************/
+
+/**
+ * Positions of alignment patterns.
+ * This array includes only the second and the third position of the alignment
+ * patterns. Rest of them can be calculated from the distance between them.
+ *
+ * See Table 1 in Appendix E (pp.71) of JIS X0510:2004.
+ */
+static const int alignmentPattern[QRSPEC_VERSION_MAX+1][2] = {
+	{ 0,  0},
+	{ 0,  0}, {18,  0}, {22,  0}, {26,  0}, {30,  0}, // 1- 5
+	{34,  0}, {22, 38}, {24, 42}, {26, 46}, {28, 50}, // 6-10
+	{30, 54}, {32, 58}, {34, 62}, {26, 46}, {26, 48}, //11-15
+	{26, 50}, {30, 54}, {30, 56}, {30, 58}, {34, 62}, //16-20
+	{28, 50}, {26, 50}, {30, 54}, {28, 54}, {32, 58}, //21-25
+	{30, 58}, {34, 62}, {26, 50}, {30, 54}, {26, 52}, //26-30
+	{30, 56}, {34, 60}, {30, 58}, {34, 62}, {30, 54}, //31-35
+	{24, 50}, {28, 54}, {32, 58}, {26, 54}, {30, 58}, //35-40
+};
+
+/**
+ * Put an alignment marker.
+ * @param frame
+ * @param width
+ * @param ox,oy center coordinate of the pattern
+ */
+static void QRspec_putAlignmentMarker(unsigned char *frame, int width, int ox, int oy)
+{
+	static const unsigned char finder[] = {
+		0xa1, 0xa1, 0xa1, 0xa1, 0xa1,
+		0xa1, 0xa0, 0xa0, 0xa0, 0xa1,
+		0xa1, 0xa0, 0xa1, 0xa0, 0xa1,
+		0xa1, 0xa0, 0xa0, 0xa0, 0xa1,
+		0xa1, 0xa1, 0xa1, 0xa1, 0xa1,
+	};
+	int x, y;
+	const unsigned char *s;
+
+	frame += (oy - 2) * width + ox - 2;
+	s = finder;
+	for(y=0; y<5; y++) {
+		for(x=0; x<5; x++) {
+			frame[x] = s[x];
+		}
+		frame += width;
+		s += 5;
+	}
+}
+
+static void QRspec_putAlignmentPattern(int version, unsigned char *frame, int width)
+{
+	int d, w, x, y, cx, cy;
+
+	if(version < 2) return;
+
+	d = alignmentPattern[version][1] - alignmentPattern[version][0];
+	if(d < 0) {
+		w = 2;
+	} else {
+		w = (width - alignmentPattern[version][0]) / d + 2;
+	}
+
+	if(w * w - 3 == 1) {
+		x = alignmentPattern[version][0];
+		y = alignmentPattern[version][0];
+		QRspec_putAlignmentMarker(frame, width, x, y);
+		return;
+	}
+
+	cx = alignmentPattern[version][0];
+	for(x=1; x<w - 1; x++) {
+		QRspec_putAlignmentMarker(frame, width,  6, cx);
+		QRspec_putAlignmentMarker(frame, width, cx,  6);
+		cx += d;
+	}
+
+	cy = alignmentPattern[version][0];
+	for(y=0; y<w-1; y++) {
+		cx = alignmentPattern[version][0];
+		for(x=0; x<w-1; x++) {
+			QRspec_putAlignmentMarker(frame, width, cx, cy);
+			cx += d;
+		}
+		cy += d;
+	}
+}
+
+/******************************************************************************
+ * Version information pattern
+ *****************************************************************************/
+
+/**
+ * Version information pattern (BCH coded).
+ * See Table 1 in Appendix D (pp.68) of JIS X0510:2004.
+ */
+static const unsigned int versionPattern[QRSPEC_VERSION_MAX - 6] = {
+	0x07c94, 0x085bc, 0x09a99, 0x0a4d3, 0x0bbf6, 0x0c762, 0x0d847, 0x0e60d,
+	0x0f928, 0x10b78, 0x1145d, 0x12a17, 0x13532, 0x149a6, 0x15683, 0x168c9,
+	0x177ec, 0x18ec4, 0x191e1, 0x1afab, 0x1b08e, 0x1cc1a, 0x1d33f, 0x1ed75,
+	0x1f250, 0x209d5, 0x216f0, 0x228ba, 0x2379f, 0x24b0b, 0x2542e, 0x26a64,
+	0x27541, 0x28c69
+};
+
+unsigned int QRspec_getVersionPattern(int version)
+{
+	if(version < 7 || version > QRSPEC_VERSION_MAX) return 0;
+
+	return versionPattern[version - 7];
+}
+
+/******************************************************************************
+ * Format information
+ *****************************************************************************/
+
+/* See calcFormatInfo in tests/test_qrspec.c */
+static const unsigned int formatInfo[4][8] = {
+	{0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976},
+	{0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0},
+	{0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed},
+	{0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b}
+};
+
+unsigned int QRspec_getFormatInfo(int mask, QRecLevel level)
+{
+	if(mask < 0 || mask > 7) return 0;
+
+	return formatInfo[level][mask];
+}
+
+/******************************************************************************
+ * Frame
+ *****************************************************************************/
+
+/**
+ * Cache of initial frames.
+ */
+/* C99 says that static storage shall be initialized to a null pointer
+ * by compiler. */
+static unsigned char *frames[QRSPEC_VERSION_MAX + 1];
+#ifdef HAVE_LIBPTHREAD
+static pthread_mutex_t frames_mutex = PTHREAD_MUTEX_INITIALIZER;
+#endif
+
+/**
+ * Put a finder pattern.
+ * @param frame
+ * @param width
+ * @param ox,oy upper-left coordinate of the pattern
+ */
+static void putFinderPattern(unsigned char *frame, int width, int ox, int oy)
+{
+	static const unsigned char finder[] = {
+		0xc1, 0xc1, 0xc1, 0xc1, 0xc1, 0xc1, 0xc1,
+		0xc1, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc1,
+		0xc1, 0xc0, 0xc1, 0xc1, 0xc1, 0xc0, 0xc1,
+		0xc1, 0xc0, 0xc1, 0xc1, 0xc1, 0xc0, 0xc1,
+		0xc1, 0xc0, 0xc1, 0xc1, 0xc1, 0xc0, 0xc1,
+		0xc1, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc1,
+		0xc1, 0xc1, 0xc1, 0xc1, 0xc1, 0xc1, 0xc1,
+	};
+	int x, y;
+	const unsigned char *s;
+
+	frame += oy * width + ox;
+	s = finder;
+	for(y=0; y<7; y++) {
+		for(x=0; x<7; x++) {
+			frame[x] = s[x];
+		}
+		frame += width;
+		s += 7;
+	}
+}
+
+
+static unsigned char *QRspec_createFrame(int version)
+{
+	unsigned char *frame, *p, *q;
+	int width;
+	int x, y;
+	unsigned int verinfo, v;
+
+	width = qrspecCapacity[version].width;
+	frame = (unsigned char *)malloc(width * width);
+	if(frame == NULL) return NULL;
+
+	memset(frame, 0, width * width);
+	/* Finder pattern */
+	putFinderPattern(frame, width, 0, 0);
+	putFinderPattern(frame, width, width - 7, 0);
+	putFinderPattern(frame, width, 0, width - 7);
+	/* Separator */
+	p = frame;
+	q = frame + width * (width - 7);
+	for(y=0; y<7; y++) {
+		p[7] = 0xc0;
+		p[width - 8] = 0xc0;
+		q[7] = 0xc0;
+		p += width;
+		q += width;
+	}
+	memset(frame + width * 7, 0xc0, 8);
+	memset(frame + width * 8 - 8, 0xc0, 8);
+	memset(frame + width * (width - 8), 0xc0, 8);
+	/* Mask format information area */
+	memset(frame + width * 8, 0x84, 9);
+	memset(frame + width * 9 - 8, 0x84, 8);
+	p = frame + 8;
+	for(y=0; y<8; y++) {
+		*p = 0x84;
+		p += width;
+	}
+	p = frame + width * (width - 7) + 8;
+	for(y=0; y<7; y++) {
+		*p = 0x84;
+		p += width;
+	}
+	/* Timing pattern */
+	p = frame + width * 6 + 8;
+	q = frame + width * 8 + 6;
+	for(x=1; x<width-15; x++) {
+		*p =  0x90 | (x & 1);
+		*q =  0x90 | (x & 1);
+		p++;
+		q += width;
+	}
+	/* Alignment pattern */
+	QRspec_putAlignmentPattern(version, frame, width);
+
+	/* Version information */
+	if(version >= 7) {
+		verinfo = QRspec_getVersionPattern(version);
+
+		p = frame + width * (width - 11);
+		v = verinfo;
+		for(x=0; x<6; x++) {
+			for(y=0; y<3; y++) {
+				p[width * y + x] = 0x88 | (v & 1);
+				v = v >> 1;
+			}
+		}
+
+		p = frame + width - 11;
+		v = verinfo;
+		for(y=0; y<6; y++) {
+			for(x=0; x<3; x++) {
+				p[x] = 0x88 | (v & 1);
+				v = v >> 1;
+			}
+			p += width;
+		}
+	}
+	/* and a little bit... */
+	frame[width * (width - 8) + 8] = 0x81;
+
+	return frame;
+}
+
+unsigned char *QRspec_newFrame(int version)
+{
+	unsigned char *frame;
+	int width;
+
+	if(version < 1 || version > QRSPEC_VERSION_MAX) return NULL;
+
+#ifdef HAVE_LIBPTHREAD
+	pthread_mutex_lock(&frames_mutex);
+#endif
+	if(frames[version] == NULL) {
+		frames[version] = QRspec_createFrame(version);
+	}
+#ifdef HAVE_LIBPTHREAD
+	pthread_mutex_unlock(&frames_mutex);
+#endif
+	if(frames[version] == NULL) return NULL;
+
+	width = qrspecCapacity[version].width;
+	frame = (unsigned char *)malloc(width * width);
+	if(frame == NULL) return NULL;
+	memcpy(frame, frames[version], width * width);
+
+	return frame;
+}
+
+void QRspec_clearCache(void)
+{
+	int i;
+
+#ifdef HAVE_LIBPTHREAD
+	pthread_mutex_lock(&frames_mutex);
+#endif
+	for(i=1; i<=QRSPEC_VERSION_MAX; i++) {
+		free(frames[i]);
+		frames[i] = NULL;
+	}
+#ifdef HAVE_LIBPTHREAD
+	pthread_mutex_unlock(&frames_mutex);
+#endif
+}