Suga koubou / Mbed 2 deprecated GSwifi_ap_webcam

see: http://mbed.org/users/okini3939/notebook/wifi_webcam/

Dependencies:   GSwifiInterface_ap_webcam USBHost mbed

USBHostC270/decodeMJPEG/decodeMJPEG.cpp@0:8558bdecb0fa, 2014-06-06 (annotated)

Committer:
okini3939
Date:
Fri Jun 06 00:44:06 2014 +0000
Revision:
0:8558bdecb0fa
1st build

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okini3939 0:8558bdecb0fa 1 // decodeMJPEG.cpp 2012/12/8
okini3939 0:8558bdecb0fa 2 // decode motion-jpeg to jpeg
okini3939 0:8558bdecb0fa 3 #include "mbed.h"
okini3939 0:8558bdecb0fa 4 #include "decodeMJPEG.h"
okini3939 0:8558bdecb0fa 5
okini3939 0:8558bdecb0fa 6 #define MARK_SOF0 0xc0
okini3939 0:8558bdecb0fa 7 #define MARK_DHT 0xc4
okini3939 0:8558bdecb0fa 8 #define MARK_RST0 0xd0
okini3939 0:8558bdecb0fa 9 #define MARK_RST7 0xd7
okini3939 0:8558bdecb0fa 10 #define MARK_SOI 0xd8
okini3939 0:8558bdecb0fa 11 #define MARK_EOI 0xd9
okini3939 0:8558bdecb0fa 12 #define MARK_SOS 0xda
okini3939 0:8558bdecb0fa 13 #define MARK_DQT 0xdb
okini3939 0:8558bdecb0fa 14 #define MARK_DRI 0xdd
okini3939 0:8558bdecb0fa 15 #define MARK_APP 0xe0
okini3939 0:8558bdecb0fa 16
okini3939 0:8558bdecb0fa 17 #define SEQ_INIT 0
okini3939 0:8558bdecb0fa 18 #define SEQ_SOI 1
okini3939 0:8558bdecb0fa 19 #define SEQ_FRAME 2
okini3939 0:8558bdecb0fa 20 #define SEQ_MARK 3
okini3939 0:8558bdecb0fa 21 #define SEQ_SEG_LEN 4
okini3939 0:8558bdecb0fa 22 #define SEQ_SEG_LEN2 5
okini3939 0:8558bdecb0fa 23 #define SEQ_SEG_BODY 6
okini3939 0:8558bdecb0fa 24 #define SEQ_SOS 7
okini3939 0:8558bdecb0fa 25 #define SEQ_SOS2 8
okini3939 0:8558bdecb0fa 26
okini3939 0:8558bdecb0fa 27 static const uint8_t dht[] = {
okini3939 0:8558bdecb0fa 28 0xFF,0xC4,0x01,0xA2,0x00,0x00,0x01,0x05,0x01,0x01,0x01,0x01,0x01,0x01,0x00,0x00,
okini3939 0:8558bdecb0fa 29 0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,
okini3939 0:8558bdecb0fa 30 0x0B,0x01,0x00,0x03,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x00,0x00,0x00,
okini3939 0:8558bdecb0fa 31 0x00,0x00,0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x10,0x00,
okini3939 0:8558bdecb0fa 32 0x02,0x01,0x03,0x03,0x02,0x04,0x03,0x05,0x05,0x04,0x04,0x00,0x00,0x01,0x7D,0x01,
okini3939 0:8558bdecb0fa 33 0x02,0x03,0x00,0x04,0x11,0x05,0x12,0x21,0x31,0x41,0x06,0x13,0x51,0x61,0x07,0x22,
okini3939 0:8558bdecb0fa 34 0x71,0x14,0x32,0x81,0x91,0xA1,0x08,0x23,0x42,0xB1,0xC1,0x15,0x52,0xD1,0xF0,0x24,
okini3939 0:8558bdecb0fa 35 0x33,0x62,0x72,0x82,0x09,0x0A,0x16,0x17,0x18,0x19,0x1A,0x25,0x26,0x27,0x28,0x29,
okini3939 0:8558bdecb0fa 36 0x2A,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,
okini3939 0:8558bdecb0fa 37 0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
okini3939 0:8558bdecb0fa 38 0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,
okini3939 0:8558bdecb0fa 39 0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,
okini3939 0:8558bdecb0fa 40 0xA9,0xAA,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xC2,0xC3,0xC4,0xC5,0xC6,
okini3939 0:8558bdecb0fa 41 0xC7,0xC8,0xC9,0xCA,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xE1,0xE2,0xE3,
okini3939 0:8558bdecb0fa 42 0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,
okini3939 0:8558bdecb0fa 43 0xFA,0x11,0x00,0x02,0x01,0x02,0x04,0x04,0x03,0x04,0x07,0x05,0x04,0x04,0x00,0x01,
okini3939 0:8558bdecb0fa 44 0x02,0x77,0x00,0x01,0x02,0x03,0x11,0x04,0x05,0x21,0x31,0x06,0x12,0x41,0x51,0x07,
okini3939 0:8558bdecb0fa 45 0x61,0x71,0x13,0x22,0x32,0x81,0x08,0x14,0x42,0x91,0xA1,0xB1,0xC1,0x09,0x23,0x33,
okini3939 0:8558bdecb0fa 46 0x52,0xF0,0x15,0x62,0x72,0xD1,0x0A,0x16,0x24,0x34,0xE1,0x25,0xF1,0x17,0x18,0x19,
okini3939 0:8558bdecb0fa 47 0x1A,0x26,0x27,0x28,0x29,0x2A,0x35,0x36,0x37,0x38,0x39,0x3A,0x43,0x44,0x45,0x46,
okini3939 0:8558bdecb0fa 48 0x47,0x48,0x49,0x4A,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x63,0x64,0x65,0x66,
okini3939 0:8558bdecb0fa 49 0x67,0x68,0x69,0x6A,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x82,0x83,0x84,0x85,
okini3939 0:8558bdecb0fa 50 0x86,0x87,0x88,0x89,0x8A,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0xA2,0xA3,
okini3939 0:8558bdecb0fa 51 0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,
okini3939 0:8558bdecb0fa 52 0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,
okini3939 0:8558bdecb0fa 53 0xD9,0xDA,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xF2,0xF3,0xF4,0xF5,0xF6,
okini3939 0:8558bdecb0fa 54 0xF7,0xF8,0xF9,0xFA,
okini3939 0:8558bdecb0fa 55 };
okini3939 0:8558bdecb0fa 56
okini3939 0:8558bdecb0fa 57 decodeMJPEG::decodeMJPEG()
okini3939 0:8558bdecb0fa 58 {
okini3939 0:8558bdecb0fa 59 m_seq = SEQ_INIT;
okini3939 0:8558bdecb0fa 60 }
okini3939 0:8558bdecb0fa 61
okini3939 0:8558bdecb0fa 62 void decodeMJPEG::inputPacket(const uint8_t* buf, int len)
okini3939 0:8558bdecb0fa 63 {
okini3939 0:8558bdecb0fa 64 for(int i = 12; i < len; i++) {
okini3939 0:8558bdecb0fa 65 input(buf[i]);
okini3939 0:8558bdecb0fa 66 }
okini3939 0:8558bdecb0fa 67 }
okini3939 0:8558bdecb0fa 68
okini3939 0:8558bdecb0fa 69 void decodeMJPEG::input(uint8_t c)
okini3939 0:8558bdecb0fa 70 {
okini3939 0:8558bdecb0fa 71 switch(m_seq) {
okini3939 0:8558bdecb0fa 72 case SEQ_INIT:
okini3939 0:8558bdecb0fa 73 if (c == 0xff) {
okini3939 0:8558bdecb0fa 74 m_seq = SEQ_SOI;
okini3939 0:8558bdecb0fa 75 }
okini3939 0:8558bdecb0fa 76 break;
okini3939 0:8558bdecb0fa 77 case SEQ_SOI:
okini3939 0:8558bdecb0fa 78 if (c == MARK_SOI) {
okini3939 0:8558bdecb0fa 79 outputJPEG(0xff, JPEG_START); // start
okini3939 0:8558bdecb0fa 80 outputJPEG(c);
okini3939 0:8558bdecb0fa 81 m_bDHT = false;
okini3939 0:8558bdecb0fa 82 m_seq = SEQ_FRAME;
okini3939 0:8558bdecb0fa 83 } else {
okini3939 0:8558bdecb0fa 84 m_seq = SEQ_INIT;
okini3939 0:8558bdecb0fa 85 }
okini3939 0:8558bdecb0fa 86 break;
okini3939 0:8558bdecb0fa 87 case SEQ_FRAME:
okini3939 0:8558bdecb0fa 88 if (c == 0xff) {
okini3939 0:8558bdecb0fa 89 m_seq = SEQ_MARK;
okini3939 0:8558bdecb0fa 90 } else {
okini3939 0:8558bdecb0fa 91 m_seq = SEQ_INIT;
okini3939 0:8558bdecb0fa 92 }
okini3939 0:8558bdecb0fa 93 break;
okini3939 0:8558bdecb0fa 94 case SEQ_MARK:
okini3939 0:8558bdecb0fa 95 if (c == MARK_SOI || c == MARK_EOI || c == 0x00) {
okini3939 0:8558bdecb0fa 96 m_seq = SEQ_INIT;
okini3939 0:8558bdecb0fa 97 break;
okini3939 0:8558bdecb0fa 98 }
okini3939 0:8558bdecb0fa 99 m_mark = c;
okini3939 0:8558bdecb0fa 100 m_seq = SEQ_SEG_LEN;
okini3939 0:8558bdecb0fa 101 break;
okini3939 0:8558bdecb0fa 102 case SEQ_SEG_LEN:
okini3939 0:8558bdecb0fa 103 m_seg_len = c;
okini3939 0:8558bdecb0fa 104 m_seq = SEQ_SEG_LEN2;
okini3939 0:8558bdecb0fa 105 break;
okini3939 0:8558bdecb0fa 106 case SEQ_SEG_LEN2:
okini3939 0:8558bdecb0fa 107 m_seg_len <<= 8;
okini3939 0:8558bdecb0fa 108 m_seg_len |= c;
okini3939 0:8558bdecb0fa 109 m_seg_len -= 2;
okini3939 0:8558bdecb0fa 110 m_seg_pos = 0;
okini3939 0:8558bdecb0fa 111 m_seq = SEQ_SEG_BODY;
okini3939 0:8558bdecb0fa 112 if (m_mark == MARK_SOS) {
okini3939 0:8558bdecb0fa 113 if (m_bDHT == false) {
okini3939 0:8558bdecb0fa 114 for(int i = 0; i < sizeof(dht); i++) {
okini3939 0:8558bdecb0fa 115 outputJPEG(dht[i]);
okini3939 0:8558bdecb0fa 116 }
okini3939 0:8558bdecb0fa 117 }
okini3939 0:8558bdecb0fa 118 m_output_desable = false;
okini3939 0:8558bdecb0fa 119 } else if (m_mark == MARK_DHT) {
okini3939 0:8558bdecb0fa 120 m_bDHT = true;
okini3939 0:8558bdecb0fa 121 m_output_desable = false;
okini3939 0:8558bdecb0fa 122 } else {
okini3939 0:8558bdecb0fa 123 m_output_desable = false;
okini3939 0:8558bdecb0fa 124 }
okini3939 0:8558bdecb0fa 125 if (!m_output_desable) {
okini3939 0:8558bdecb0fa 126 outputJPEG(0xff);
okini3939 0:8558bdecb0fa 127 outputJPEG(m_mark);
okini3939 0:8558bdecb0fa 128 outputJPEG((m_seg_len+2) >> 8);
okini3939 0:8558bdecb0fa 129 outputJPEG((m_seg_len+2) & 0xff);
okini3939 0:8558bdecb0fa 130 }
okini3939 0:8558bdecb0fa 131 break;
okini3939 0:8558bdecb0fa 132 case SEQ_SEG_BODY:
okini3939 0:8558bdecb0fa 133 if (!m_output_desable) {
okini3939 0:8558bdecb0fa 134 outputJPEG(c);
okini3939 0:8558bdecb0fa 135 }
okini3939 0:8558bdecb0fa 136 if (++m_seg_pos < m_seg_len) {
okini3939 0:8558bdecb0fa 137 break;
okini3939 0:8558bdecb0fa 138 }
okini3939 0:8558bdecb0fa 139 if (m_mark == MARK_SOS) {
okini3939 0:8558bdecb0fa 140 m_seq = SEQ_SOS;
okini3939 0:8558bdecb0fa 141 break;
okini3939 0:8558bdecb0fa 142 }
okini3939 0:8558bdecb0fa 143 m_seq = SEQ_FRAME;
okini3939 0:8558bdecb0fa 144 break;
okini3939 0:8558bdecb0fa 145 case SEQ_SOS:
okini3939 0:8558bdecb0fa 146 if (c == 0xff) {
okini3939 0:8558bdecb0fa 147 m_seq = SEQ_SOS2;
okini3939 0:8558bdecb0fa 148 break;
okini3939 0:8558bdecb0fa 149 }
okini3939 0:8558bdecb0fa 150 outputJPEG(c);
okini3939 0:8558bdecb0fa 151 break;
okini3939 0:8558bdecb0fa 152 case SEQ_SOS2:
okini3939 0:8558bdecb0fa 153 if (c == 0x00) {
okini3939 0:8558bdecb0fa 154 outputJPEG(0xff);
okini3939 0:8558bdecb0fa 155 outputJPEG(0x00);
okini3939 0:8558bdecb0fa 156 m_seq = SEQ_SOS;
okini3939 0:8558bdecb0fa 157 break;
okini3939 0:8558bdecb0fa 158 } else if (c >= MARK_RST0 && c <= MARK_RST7) {
okini3939 0:8558bdecb0fa 159 outputJPEG(0xff);
okini3939 0:8558bdecb0fa 160 outputJPEG(c);
okini3939 0:8558bdecb0fa 161 m_seq = SEQ_SOS;
okini3939 0:8558bdecb0fa 162 break;
okini3939 0:8558bdecb0fa 163 } else if (c == MARK_EOI) {
okini3939 0:8558bdecb0fa 164 outputJPEG(0xff);
okini3939 0:8558bdecb0fa 165 outputJPEG(c, JPEG_END);
okini3939 0:8558bdecb0fa 166 m_seq = SEQ_INIT;
okini3939 0:8558bdecb0fa 167 break;
okini3939 0:8558bdecb0fa 168 } else if (c == MARK_SOI) {
okini3939 0:8558bdecb0fa 169 outputJPEG(0xff);
okini3939 0:8558bdecb0fa 170 outputJPEG(c);
okini3939 0:8558bdecb0fa 171 m_seq = SEQ_INIT;
okini3939 0:8558bdecb0fa 172 break;
okini3939 0:8558bdecb0fa 173 }
okini3939 0:8558bdecb0fa 174 m_seq = SEQ_INIT;
okini3939 0:8558bdecb0fa 175 break;
okini3939 0:8558bdecb0fa 176 default:
okini3939 0:8558bdecb0fa 177 m_seq = SEQ_INIT;
okini3939 0:8558bdecb0fa 178 break;
okini3939 0:8558bdecb0fa 179 }
okini3939 0:8558bdecb0fa 180 }