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
/media/uploads/va009039/f401re-c270-1.jpg /media/uploads/va009039/k64f-c270.jpg

Revision:
0:a72d9b047d8d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/KL46Z-USBHostC270/BaseUvc.cpp	Mon Jan 27 11:07:34 2014 +0000
@@ -0,0 +1,56 @@
+// BaseUvc.cpp
+#include "USBHostConf.h"
+#include "USBHost.h"
+//#include "USBIsochronous.h"
+#include "BaseUvc.h"
+
+void BaseUvc::poll()
+{
+    uint8_t buf[ep_iso_in.getSize()];
+    int result = host->IsochronousRead(&ep_iso_in, buf, sizeof(buf));
+    if (result >= 0) {
+        uint16_t frame = 0;
+        onResult(frame, buf, result);
+    }
+}
+
+USB_TYPE BaseUvc::Control(int req, int cs, int index, uint8_t* buf, int size)
+{
+    if (req == SET_CUR) {    
+        return host->controlWrite(dev,
+                    USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE, 
+                    req, cs<<8, index, buf, size);
+    }
+    return host->controlRead(dev,
+                USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE, 
+                req, cs<<8, index, buf, size);
+}
+
+USB_TYPE BaseUvc::setInterfaceAlternate(uint8_t intf, uint8_t alt)
+{
+    return host->controlWrite(dev, USB_HOST_TO_DEVICE | USB_RECIPIENT_INTERFACE,
+                                   SET_INTERFACE, alt, intf, NULL, 0);
+}
+
+void BaseUvc::onResult(uint16_t frame, uint8_t* buf, int len)
+{
+  if(m_pCbItem && m_pCbMeth)
+    (m_pCbItem->*m_pCbMeth)(frame, buf, len);
+  else if(m_pCb)
+    m_pCb(frame, buf, len);
+}
+
+void BaseUvc::setOnResult( void (*pMethod)(uint16_t, uint8_t*, int) )
+{
+    m_pCb = pMethod;
+    m_pCbItem = NULL;
+    m_pCbMeth = NULL;
+}
+    
+void BaseUvc::clearOnResult()
+{
+    m_pCb = NULL;
+    m_pCbItem = NULL;
+    m_pCbMeth = NULL;
+}
+