Diff: USBHostCam/USBHostCam.h

Revision:

12:ea4badc78215

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHostCam/USBHostCam.h	Wed Mar 20 14:28:39 2013 +0000
@@ -0,0 +1,101 @@
+// USBHostCam.h
+#include "USBHostConf.h"
+#include "USBHost.h"
+#include "USBIsochronous.h"
+#include "BaseUvc.h"
+#include "decodeMJPEG.h"
+#pragma once
+
+#define _160x120 2
+#define _176x144 3
+#define _320x176 4
+#define _320x240 5
+#define _352x288 6
+#define _432x240 7
+#define _640x480 1
+#define _544x288 8
+#define _640x360 9
+#define _752x416 10
+#define _800x448 11
+#define _800x600 12
+
+#define TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);};
+
+struct CamInfo {
+    uint16_t vid;
+    uint16_t pid;
+    uint8_t size;
+    uint8_t option;
+//
+    const char* name;
+    uint8_t formatIndex;
+    uint8_t frameIndex;
+    uint32_t interval;
+    uint8_t en;
+    uint8_t mps;
+    uint8_t if_alt;
+    uint8_t frameCount; // ITD frame count 1-8
+    uint8_t queueLimit; // ITD queue limit 1-3
+};
+
+/** 
+ * A class to communicate a Cam
+ */
+class USBHostCam : public IUSBEnumerator, public BaseUvc, public decodeMJPEG {
+public:
+    /**
+    * Constructor
+    *
+    */
+    USBHostCam(uint8_t size = _160x120, uint8_t option = 0, CamInfo* user_caminfo = NULL);
+
+    /**
+    * Check if a Cam device is connected
+    *
+    * @return true if a Cam device is connected
+    */
+    bool connected();
+
+    /**
+     * Try to connect to a Cam device
+     *
+     * @return true if connection was successful
+     */
+    bool connect();
+
+    /**
+     * read jpeg image
+     *
+     * @param buf read buffer 
+     * @param size buffer size 
+     * @param timeout_ms timeout default 15sec
+     * @return jpeg size if read success else -1
+     */
+    int readJPEG(uint8_t* buf, int size, int timeout_ms = 15*1000);
+
+protected:
+    //From IUSBEnumerator
+    virtual void setVidPid(uint16_t vid, uint16_t pid);
+    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
+    virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
+
+private:
+    bool dev_connected;
+
+    int cam_intf;
+    bool device_found;
+    bool caminfo_found;
+    uint8_t _seq;
+    uint8_t* _buf;
+    int _pos;
+    int _size;
+    CamInfo* CamInfoList;
+    CamInfo* caminfo;
+    uint8_t _caminfo_size;
+    uint8_t _caminfo_option;
+
+    virtual void outputJPEG(uint8_t c, int status); // from decodeMJPEG
+    void callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len);
+    void init();
+    void onDisconnect();
+};