Diff: USBHostC270/USBHostC270.h

Revision:

0:8558bdecb0fa

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHostC270/USBHostC270.h	Fri Jun 06 00:44:06 2014 +0000
@@ -0,0 +1,92 @@
+#include "USBHostConf.h"
+#include "USBHost.h"
+#include "BaseUvc.h"
+#include "decodeMJPEG.h"
+
+// Logitech C270
+#define C270_VID 0x046d
+#define C270_PID 0x0825
+#define C270_160x120 2
+#define C270_176x144 3
+#define C270_320x176 4
+#define C270_320x240 5
+#define C270_352x288 6
+#define C270_432x240 7
+#define C270_640x480 1
+#define C270_544x288 8
+#define C270_640x360 9
+#define C270_752x416 10
+#define C270_800x448 11
+#define C270_800x600 12
+
+#define C270_MJPEG 2
+#define C270_YUV2  1
+
+#define C270_EN  0x81
+#define C270_MPS  192
+#define C270_IF_ALT 1
+
+#define TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);};
+
+class IsochronousEp;
+class BaseUvc;
+/** 
+ * A class to communicate a C270
+ */
+class USBHostC270 : public IUSBEnumerator, public BaseUvc, public decodeMJPEG {
+public:
+    /**
+    * Constructor
+    *
+    */
+    USBHostC270(int formatIndex = C270_MJPEG, int frameIndex = C270_160x120, uint32_t interval = _5FPS);
+
+    /**
+    * Check if a C270 device is connected
+    *
+    * @return true if a MSD device is connected
+    */
+    bool connected();
+
+    /**
+     * Try to connect to a C270 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 c270_intf;
+    bool c270_device_found;
+    bool c270_vid_pid_found;
+    int _formatIndex;
+    int _frameIndex;
+    uint32_t _interval;
+    uint8_t _seq;
+    uint8_t* _buf;
+    int _pos;
+    int _size;
+
+    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();
+};