Norimasa Okamoto / Mbed 2 deprecated LPC4088-USBHostC270_example

Simple USBHost WebCam for EA LPC4088 QSB/LPC1768 test program

Dependencies:   LPC4088-USBHost mbed

EA LPC4088 QSB/LPC1768をUSBホストにしてWebカメラからJPEG画像を読み取るテストプログラムです。

The usage is the same as KL46Z-USBHostC270_example.
使い方はKL46Z-USBHostC270_exampleと同じです。
動作確認： Logitech C270,Logitech Q200R(Qcam Orbit AF)
/media/uploads/va009039/lpc4088-c270-480x360.jpg

LPC4088-USBHostC270/USBHostCam.h@1:1bb68ef9aa77, 2014-04-25 (annotated)

Committer:
va009039
Date:
Fri Apr 25 05:55:06 2014 +0000
Revision:
1:1bb68ef9aa77
Parent:
0:c972ee42b455 
update LPC4088-USBHost library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 0:c972ee42b455 1 // USBHostCam.h
va009039 0:c972ee42b455 2 #include "USBHostConf.h"
va009039 0:c972ee42b455 3 #include "USBHost.h"
va009039 0:c972ee42b455 4 #include "USBIsochronous.h"
va009039 0:c972ee42b455 5 #include "BaseUvc.h"
va009039 0:c972ee42b455 6 #include "decodeMJPEG.h"
va009039 0:c972ee42b455 7 #pragma once
va009039 0:c972ee42b455 8
va009039 0:c972ee42b455 9 #define _160x120 2
va009039 0:c972ee42b455 10 #define _176x144 3
va009039 0:c972ee42b455 11 #define _320x176 4
va009039 0:c972ee42b455 12 #define _320x240 5
va009039 0:c972ee42b455 13 #define _352x288 6
va009039 0:c972ee42b455 14 #define _432x240 7
va009039 0:c972ee42b455 15 #define _640x480 1
va009039 0:c972ee42b455 16 #define _544x288 8
va009039 0:c972ee42b455 17 #define _640x360 9
va009039 0:c972ee42b455 18 #define _752x416 10
va009039 0:c972ee42b455 19 #define _800x448 11
va009039 0:c972ee42b455 20 #define _800x600 12
va009039 0:c972ee42b455 21
va009039 0:c972ee42b455 22 #if 0
va009039 0:c972ee42b455 23 #define TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);};
va009039 0:c972ee42b455 24 #else
va009039 0:c972ee42b455 25 #define TEST_ASSERT(A) while(0)
va009039 0:c972ee42b455 26 #endif
va009039 0:c972ee42b455 27
va009039 0:c972ee42b455 28
va009039 0:c972ee42b455 29 struct CamInfo {
va009039 0:c972ee42b455 30 uint16_t vid;
va009039 0:c972ee42b455 31 uint16_t pid;
va009039 0:c972ee42b455 32 uint8_t size;
va009039 0:c972ee42b455 33 uint8_t option;
va009039 0:c972ee42b455 34 //
va009039 0:c972ee42b455 35 const char* name;
va009039 0:c972ee42b455 36 uint8_t formatIndex;
va009039 0:c972ee42b455 37 uint8_t frameIndex;
va009039 0:c972ee42b455 38 uint32_t interval;
va009039 0:c972ee42b455 39 uint8_t en;
va009039 0:c972ee42b455 40 uint8_t mps;
va009039 0:c972ee42b455 41 uint8_t if_alt;
va009039 0:c972ee42b455 42 uint8_t frameCount; // ITD frame count 1-8
va009039 0:c972ee42b455 43 uint8_t queueLimit; // ITD queue limit 1-3
va009039 0:c972ee42b455 44 };
va009039 0:c972ee42b455 45
va009039 0:c972ee42b455 46 /**
va009039 0:c972ee42b455 47 * A class to communicate a Cam
va009039 0:c972ee42b455 48 */
va009039 0:c972ee42b455 49 class USBHostCam : public IUSBEnumerator, public BaseUvc, public decodeMJPEG {
va009039 0:c972ee42b455 50 public:
va009039 0:c972ee42b455 51 /**
va009039 0:c972ee42b455 52 * Constructor
va009039 0:c972ee42b455 53 *
va009039 0:c972ee42b455 54 */
va009039 0:c972ee42b455 55 USBHostCam(uint8_t size = _160x120, uint8_t option = 0, CamInfo* user_caminfo = NULL);
va009039 0:c972ee42b455 56
va009039 0:c972ee42b455 57 /**
va009039 0:c972ee42b455 58 * Check if a Cam device is connected
va009039 0:c972ee42b455 59 *
va009039 0:c972ee42b455 60 * @return true if a Cam device is connected
va009039 0:c972ee42b455 61 */
va009039 0:c972ee42b455 62 bool connected();
va009039 0:c972ee42b455 63
va009039 0:c972ee42b455 64 /**
va009039 0:c972ee42b455 65 * Try to connect to a Cam device
va009039 0:c972ee42b455 66 *
va009039 0:c972ee42b455 67 * @return true if connection was successful
va009039 0:c972ee42b455 68 */
va009039 0:c972ee42b455 69 bool connect();
va009039 0:c972ee42b455 70
va009039 0:c972ee42b455 71 /**
va009039 0:c972ee42b455 72 * read jpeg image
va009039 0:c972ee42b455 73 *
va009039 0:c972ee42b455 74 * @param buf read buffer
va009039 0:c972ee42b455 75 * @param size buffer size
va009039 0:c972ee42b455 76 * @param timeout_ms timeout default 15sec
va009039 0:c972ee42b455 77 * @return jpeg size if read success else -1
va009039 0:c972ee42b455 78 */
va009039 0:c972ee42b455 79 int readJPEG(uint8_t* buf, int size, int timeout_ms = 15*1000);
va009039 0:c972ee42b455 80
va009039 0:c972ee42b455 81 protected:
va009039 0:c972ee42b455 82 //From IUSBEnumerator
va009039 0:c972ee42b455 83 virtual void setVidPid(uint16_t vid, uint16_t pid);
va009039 0:c972ee42b455 84 virtual bool parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol); //Must return true if the interface should be parsed
va009039 0:c972ee42b455 85 virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
va009039 0:c972ee42b455 86
va009039 0:c972ee42b455 87 private:
va009039 0:c972ee42b455 88 bool dev_connected;
va009039 0:c972ee42b455 89
va009039 0:c972ee42b455 90 int cam_intf;
va009039 0:c972ee42b455 91 bool device_found;
va009039 0:c972ee42b455 92 bool caminfo_found;
va009039 0:c972ee42b455 93 uint8_t _seq;
va009039 0:c972ee42b455 94 uint8_t* _buf;
va009039 0:c972ee42b455 95 int _pos;
va009039 0:c972ee42b455 96 int _size;
va009039 0:c972ee42b455 97 CamInfo* CamInfoList;
va009039 0:c972ee42b455 98 CamInfo* caminfo;
va009039 0:c972ee42b455 99 uint8_t _caminfo_size;
va009039 0:c972ee42b455 100 uint8_t _caminfo_option;
va009039 0:c972ee42b455 101
va009039 0:c972ee42b455 102 virtual void outputJPEG(uint8_t c, int status); // from decodeMJPEG
va009039 0:c972ee42b455 103 void callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len);
va009039 0:c972ee42b455 104 void init();
va009039 0:c972ee42b455 105 void onDisconnect();
va009039 0:c972ee42b455 106 };