nikos chalikias / Mbed 2 deprecated n-bed-USBHostC270_example

testing n-Bed with a Logitech C270 camera

Dependencies:   USBHost mbed

Fork of USBHostC270_example by Norimasa Okamoto

USBHostCam/USBHostCam.h@14:449f809d07eb, 2015-05-21 (annotated)

Committer:
chalikias
Date:
Thu May 21 11:59:47 2015 +0000
Revision:
14:449f809d07eb
Parent:
12:ea4badc78215 
camera resolution reduced to 160x120, else memory overflow issues...

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 12:ea4badc78215 1 // USBHostCam.h
va009039 12:ea4badc78215 2 #include "USBHostConf.h"
va009039 12:ea4badc78215 3 #include "USBHost.h"
va009039 12:ea4badc78215 4 #include "USBIsochronous.h"
va009039 12:ea4badc78215 5 #include "BaseUvc.h"
va009039 12:ea4badc78215 6 #include "decodeMJPEG.h"
va009039 12:ea4badc78215 7 #pragma once
va009039 12:ea4badc78215 8
va009039 12:ea4badc78215 9 #define _160x120 2
va009039 12:ea4badc78215 10 #define _176x144 3
va009039 12:ea4badc78215 11 #define _320x176 4
va009039 12:ea4badc78215 12 #define _320x240 5
va009039 12:ea4badc78215 13 #define _352x288 6
va009039 12:ea4badc78215 14 #define _432x240 7
va009039 12:ea4badc78215 15 #define _640x480 1
va009039 12:ea4badc78215 16 #define _544x288 8
va009039 12:ea4badc78215 17 #define _640x360 9
va009039 12:ea4badc78215 18 #define _752x416 10
va009039 12:ea4badc78215 19 #define _800x448 11
va009039 12:ea4badc78215 20 #define _800x600 12
va009039 12:ea4badc78215 21
va009039 12:ea4badc78215 22 #define TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);};
va009039 12:ea4badc78215 23
va009039 12:ea4badc78215 24 struct CamInfo {
va009039 12:ea4badc78215 25 uint16_t vid;
va009039 12:ea4badc78215 26 uint16_t pid;
va009039 12:ea4badc78215 27 uint8_t size;
va009039 12:ea4badc78215 28 uint8_t option;
va009039 12:ea4badc78215 29 //
va009039 12:ea4badc78215 30 const char* name;
va009039 12:ea4badc78215 31 uint8_t formatIndex;
va009039 12:ea4badc78215 32 uint8_t frameIndex;
va009039 12:ea4badc78215 33 uint32_t interval;
va009039 12:ea4badc78215 34 uint8_t en;
va009039 12:ea4badc78215 35 uint8_t mps;
va009039 12:ea4badc78215 36 uint8_t if_alt;
va009039 12:ea4badc78215 37 uint8_t frameCount; // ITD frame count 1-8
va009039 12:ea4badc78215 38 uint8_t queueLimit; // ITD queue limit 1-3
va009039 12:ea4badc78215 39 };
va009039 12:ea4badc78215 40
va009039 12:ea4badc78215 41 /**
va009039 12:ea4badc78215 42 * A class to communicate a Cam
va009039 12:ea4badc78215 43 */
va009039 12:ea4badc78215 44 class USBHostCam : public IUSBEnumerator, public BaseUvc, public decodeMJPEG {
va009039 12:ea4badc78215 45 public:
va009039 12:ea4badc78215 46 /**
va009039 12:ea4badc78215 47 * Constructor
va009039 12:ea4badc78215 48 *
va009039 12:ea4badc78215 49 */
va009039 12:ea4badc78215 50 USBHostCam(uint8_t size = _160x120, uint8_t option = 0, CamInfo* user_caminfo = NULL);
va009039 12:ea4badc78215 51
va009039 12:ea4badc78215 52 /**
va009039 12:ea4badc78215 53 * Check if a Cam device is connected
va009039 12:ea4badc78215 54 *
va009039 12:ea4badc78215 55 * @return true if a Cam device is connected
va009039 12:ea4badc78215 56 */
va009039 12:ea4badc78215 57 bool connected();
va009039 12:ea4badc78215 58
va009039 12:ea4badc78215 59 /**
va009039 12:ea4badc78215 60 * Try to connect to a Cam device
va009039 12:ea4badc78215 61 *
va009039 12:ea4badc78215 62 * @return true if connection was successful
va009039 12:ea4badc78215 63 */
va009039 12:ea4badc78215 64 bool connect();
va009039 12:ea4badc78215 65
va009039 12:ea4badc78215 66 /**
va009039 12:ea4badc78215 67 * read jpeg image
va009039 12:ea4badc78215 68 *
va009039 12:ea4badc78215 69 * @param buf read buffer
va009039 12:ea4badc78215 70 * @param size buffer size
va009039 12:ea4badc78215 71 * @param timeout_ms timeout default 15sec
va009039 12:ea4badc78215 72 * @return jpeg size if read success else -1
va009039 12:ea4badc78215 73 */
va009039 12:ea4badc78215 74 int readJPEG(uint8_t* buf, int size, int timeout_ms = 15*1000);
va009039 12:ea4badc78215 75
va009039 12:ea4badc78215 76 protected:
va009039 12:ea4badc78215 77 //From IUSBEnumerator
va009039 12:ea4badc78215 78 virtual void setVidPid(uint16_t vid, uint16_t pid);
va009039 12:ea4badc78215 79 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 12:ea4badc78215 80 virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
va009039 12:ea4badc78215 81
va009039 12:ea4badc78215 82 private:
va009039 12:ea4badc78215 83 bool dev_connected;
va009039 12:ea4badc78215 84
va009039 12:ea4badc78215 85 int cam_intf;
va009039 12:ea4badc78215 86 bool device_found;
va009039 12:ea4badc78215 87 bool caminfo_found;
va009039 12:ea4badc78215 88 uint8_t _seq;
va009039 12:ea4badc78215 89 uint8_t* _buf;
va009039 12:ea4badc78215 90 int _pos;
va009039 12:ea4badc78215 91 int _size;
va009039 12:ea4badc78215 92 CamInfo* CamInfoList;
va009039 12:ea4badc78215 93 CamInfo* caminfo;
va009039 12:ea4badc78215 94 uint8_t _caminfo_size;
va009039 12:ea4badc78215 95 uint8_t _caminfo_option;
va009039 12:ea4badc78215 96
va009039 12:ea4badc78215 97 virtual void outputJPEG(uint8_t c, int status); // from decodeMJPEG
va009039 12:ea4badc78215 98 void callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len);
va009039 12:ea4badc78215 99 void init();
va009039 12:ea4badc78215 100 void onDisconnect();
va009039 12:ea4badc78215 101 };