Norimasa Okamoto
Simple USBHost WebCam test program
Dependencies: F401RE-USBHost mbed
Fork of
KL46Z-USBHostC270_example
by 
Norimasa Okamoto
WebカメラからJPEG画像を読み取るテストプログラムです。
使い方はKL46Z-USBHostC270_exampleと同じです。
動作確認カメラ： Logitech C270, Logitech C210, Logitech Q200R(Qcam Orbit AF), LifeCam VX-500
Diff: KL46Z-USBHostC270/decodeMJPEG.cpp
- Revision:
- 1:22304b8f8395
- Parent:
- 0:a72d9b047d8d
- Child:
- 2:2a40888db9fc
--- a/KL46Z-USBHostC270/decodeMJPEG.cpp Mon Jan 27 11:07:34 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,180 +0,0 @@
-// decodeMJPEG.cpp 2012/12/8
-// decode motion-jpeg to jpeg
-#include "mbed.h"
-#include "decodeMJPEG.h"
-
-#define MARK_SOF0 0xc0
-#define MARK_DHT 0xc4
-#define MARK_RST0 0xd0
-#define MARK_RST7 0xd7
-#define MARK_SOI 0xd8
-#define MARK_EOI 0xd9
-#define MARK_SOS 0xda
-#define MARK_DQT 0xdb
-#define MARK_DRI 0xdd
-#define MARK_APP 0xe0
-
-#define SEQ_INIT 0
-#define SEQ_SOI 1
-#define SEQ_FRAME 2
-#define SEQ_MARK 3
-#define SEQ_SEG_LEN 4
-#define SEQ_SEG_LEN2 5
-#define SEQ_SEG_BODY 6
-#define SEQ_SOS 7
-#define SEQ_SOS2 8
-
-static const uint8_t dht[] = {
-0xFF,0xC4,0x01,0xA2,0x00,0x00,0x01,0x05,0x01,0x01,0x01,0x01,0x01,0x01,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,
-0x0B,0x01,0x00,0x03,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x00,0x00,0x00,
-0x00,0x00,0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x10,0x00,
-0x02,0x01,0x03,0x03,0x02,0x04,0x03,0x05,0x05,0x04,0x04,0x00,0x00,0x01,0x7D,0x01,
-0x02,0x03,0x00,0x04,0x11,0x05,0x12,0x21,0x31,0x41,0x06,0x13,0x51,0x61,0x07,0x22,
-0x71,0x14,0x32,0x81,0x91,0xA1,0x08,0x23,0x42,0xB1,0xC1,0x15,0x52,0xD1,0xF0,0x24,
-0x33,0x62,0x72,0x82,0x09,0x0A,0x16,0x17,0x18,0x19,0x1A,0x25,0x26,0x27,0x28,0x29,
-0x2A,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,
-0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
-0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,
-0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,
-0xA9,0xAA,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xC2,0xC3,0xC4,0xC5,0xC6,
-0xC7,0xC8,0xC9,0xCA,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xE1,0xE2,0xE3,
-0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,
-0xFA,0x11,0x00,0x02,0x01,0x02,0x04,0x04,0x03,0x04,0x07,0x05,0x04,0x04,0x00,0x01,
-0x02,0x77,0x00,0x01,0x02,0x03,0x11,0x04,0x05,0x21,0x31,0x06,0x12,0x41,0x51,0x07,
-0x61,0x71,0x13,0x22,0x32,0x81,0x08,0x14,0x42,0x91,0xA1,0xB1,0xC1,0x09,0x23,0x33,
-0x52,0xF0,0x15,0x62,0x72,0xD1,0x0A,0x16,0x24,0x34,0xE1,0x25,0xF1,0x17,0x18,0x19,
-0x1A,0x26,0x27,0x28,0x29,0x2A,0x35,0x36,0x37,0x38,0x39,0x3A,0x43,0x44,0x45,0x46,
-0x47,0x48,0x49,0x4A,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x63,0x64,0x65,0x66,
-0x67,0x68,0x69,0x6A,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x82,0x83,0x84,0x85,
-0x86,0x87,0x88,0x89,0x8A,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0xA2,0xA3,
-0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,
-0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,
-0xD9,0xDA,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xF2,0xF3,0xF4,0xF5,0xF6,
-0xF7,0xF8,0xF9,0xFA,
-};
-
-decodeMJPEG::decodeMJPEG()
-{
- m_seq = SEQ_INIT;
-}
-
-void decodeMJPEG::inputPacket(const uint8_t* buf, int len)
-{
- for(int i = 12; i < len; i++) {
- input(buf[i]);
- }
-}
-
-void decodeMJPEG::input(uint8_t c)
-{
- switch(m_seq) {
- case SEQ_INIT:
- if (c == 0xff) {
- m_seq = SEQ_SOI;
- }
- break;
- case SEQ_SOI:
- if (c == MARK_SOI) {
- outputJPEG(0xff, JPEG_START); // start
- outputJPEG(c);
- m_bDHT = false;
- m_seq = SEQ_FRAME;
- } else {
- m_seq = SEQ_INIT;
- }
- break;
- case SEQ_FRAME:
- if (c == 0xff) {
- m_seq = SEQ_MARK;
- } else {
- m_seq = SEQ_INIT;
- }
- break;
- case SEQ_MARK:
- if (c == MARK_SOI || c == MARK_EOI || c == 0x00) {
- m_seq = SEQ_INIT;
- break;
- }
- m_mark = c;
- m_seq = SEQ_SEG_LEN;
- break;
- case SEQ_SEG_LEN:
- m_seg_len = c;
- m_seq = SEQ_SEG_LEN2;
- break;
- case SEQ_SEG_LEN2:
- m_seg_len <<= 8;
- m_seg_len |= c;
- m_seg_len -= 2;
- m_seg_pos = 0;
- m_seq = SEQ_SEG_BODY;
- if (m_mark == MARK_SOS) {
- if (m_bDHT == false) {
- for(int i = 0; i < sizeof(dht); i++) {
- outputJPEG(dht[i]);
- }
- }
- m_output_desable = false;
- } else if (m_mark == MARK_DHT) {
- m_bDHT = true;
- m_output_desable = false;
- } else {
- m_output_desable = false;
- }
- if (!m_output_desable) {
- outputJPEG(0xff);
- outputJPEG(m_mark);
- outputJPEG((m_seg_len+2) >> 8);
- outputJPEG((m_seg_len+2) & 0xff);
- }
- break;
- case SEQ_SEG_BODY:
- if (!m_output_desable) {
- outputJPEG(c);
- }
- if (++m_seg_pos < m_seg_len) {
- break;
- }
- if (m_mark == MARK_SOS) {
- m_seq = SEQ_SOS;
- break;
- }
- m_seq = SEQ_FRAME;
- break;
- case SEQ_SOS:
- if (c == 0xff) {
- m_seq = SEQ_SOS2;
- break;
- }
- outputJPEG(c);
- break;
- case SEQ_SOS2:
- if (c == 0x00) {
- outputJPEG(0xff);
- outputJPEG(0x00);
- m_seq = SEQ_SOS;
- break;
- } else if (c >= MARK_RST0 && c <= MARK_RST7) {
- outputJPEG(0xff);
- outputJPEG(c);
- m_seq = SEQ_SOS;
- break;
- } else if (c == MARK_EOI) {
- outputJPEG(0xff);
- outputJPEG(c, JPEG_END);
- m_seq = SEQ_INIT;
- break;
- } else if (c == MARK_SOI) {
- outputJPEG(0xff);
- outputJPEG(c);
- m_seq = SEQ_INIT;
- break;
- }
- m_seq = SEQ_INIT;
- break;
- default:
- m_seq = SEQ_INIT;
- break;
- }
-}