Diff: USBHostCam/USBHostCam.cpp

Revision:

12:ea4badc78215

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHostCam/USBHostCam.cpp	Wed Mar 20 14:28:39 2013 +0000
@@ -0,0 +1,176 @@
+// USBHostCam.cpp
+#include "USBHostCam.h"
+#include "dbg.h"
+
+//#define CAM_DEBUG 1
+#ifdef CAM_DEBUG
+#define CAM_DBG(x, ...) std::printf("[%s:%d]"x"\r\n", __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
+#else
+#define CAM_DBG(...)  while(0);
+#endif
+
+// ------------------ HcControl Register ---------------------
+#define  OR_CONTROL_IE                  0x00000008
+
+CamInfo* getCamInfoList(); // CamInfo.cpp
+
+USBHostCam::USBHostCam(uint8_t size, uint8_t option, CamInfo* user_caminfo)
+{
+    CAM_DBG("size: %d, option: %d", size, option);
+    _caminfo_size = size;
+    _caminfo_option = option;
+    if (user_caminfo) {
+        CamInfoList = user_caminfo;
+    } else {
+        CamInfoList = getCamInfoList();
+    }
+    clearOnResult();
+    host = USBHost::getHostInst();
+    m_isoEp = new IsochronousEp;
+    init();
+}
+
+void USBHostCam::init()
+{
+    CAM_DBG("");
+    dev_connected = false;
+    dev = NULL;
+    cam_intf = -1;
+    device_found = false;
+    caminfo_found = false;
+}
+
+bool USBHostCam::connected()
+{
+    return dev_connected;
+}
+
+bool USBHostCam::connect()
+{
+    if (dev_connected) {
+        return true;
+    }
+
+    for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
+        if ((dev = host->getDevice(i)) != NULL) {
+            
+            CAM_DBG("Trying to connect Cam device\r\n");
+            
+            if(host->enumerate(dev, this)) {
+                break;
+            }
+            if (device_found) {
+                USB_INFO("New Cam: %s device: VID:%04x PID:%04x [dev: %p - intf: %d]", caminfo->name, dev->getVid(), dev->getPid(), dev, cam_intf);
+                dev->setName(caminfo->name, cam_intf);
+                host->registerDriver(dev, cam_intf, this, &USBHostCam::onDisconnect);
+                int addr = dev->getAddress();
+                m_isoEp->init(addr, caminfo->en, caminfo->mps, caminfo->frameCount, caminfo->queueLimit);
+                uint8_t buf[26];
+                memset(buf, 0, sizeof(buf));
+                buf[2] = caminfo->formatIndex;
+                buf[3] = caminfo->frameIndex;
+                *reinterpret_cast<uint32_t*>(buf+4) = caminfo->interval;
+                USB_TYPE res = Control(SET_CUR, VS_COMMIT_CONTROL, 1, buf, sizeof(buf));
+                if (res != USB_TYPE_OK) {
+                    CAM_DBG("SET_CUR VS_COMMIT_CONTROL FAILED");
+                }
+                res = setInterfaceAlternate(1, caminfo->if_alt);
+                if (res != USB_TYPE_OK) {
+                    CAM_DBG("SET_INTERFACE FAILED");
+                }
+                for(int i = 0; i < 16; i++) {
+                    report_cc_count[i] = 0;
+                    report_ps_cc_count[i] = 0;
+                }
+                LPC_USB->HcControl |= OR_CONTROL_PLE; // PeriodicListEnable
+                LPC_USB->HcControl |= OR_CONTROL_IE;  // IsochronousEnable
+
+                dev_connected = true;
+                return true;
+            }
+        }
+    }
+    init();
+    return false;
+}
+
+void USBHostCam::onDisconnect()
+{
+    CAM_DBG("dev_connected: %d", dev_connected);
+    if (dev_connected) {
+        m_isoEp->disconnect();
+        init();
+    }
+}
+
+/*virtual*/ void USBHostCam::setVidPid(uint16_t vid, uint16_t pid)
+{
+    CAM_DBG("vid:%04x,pid:%04x", vid, pid);
+    caminfo = CamInfoList;
+    while(caminfo->vid != 0) {
+        if (caminfo->vid == vid && caminfo->pid == pid && 
+            caminfo->size == _caminfo_size && caminfo->option == _caminfo_option) {
+            caminfo_found = true;
+            break;
+        }
+        caminfo++;
+    }
+}
+
+/*virtual*/ bool USBHostCam::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
+{
+    CAM_DBG("intf_nb=%d,intf_class=%02X,intf_subclass=%d,intf_protocol=%d", intf_nb, intf_class, intf_subclass, intf_protocol);
+    if ((cam_intf == -1) && caminfo_found) {
+        cam_intf = intf_nb;
+        device_found = true;
+        return true;
+    }
+    return false;
+}
+
+/*virtual*/ bool USBHostCam::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
+{
+    CAM_DBG("intf_nb:%d,type:%d,dir:%d",intf_nb, type, dir);
+    return false;
+}
+
+#define SEQ_READ_IDOL 0
+#define SEQ_READ_EXEC 1
+#define SEQ_READ_DONE 2
+
+int USBHostCam::readJPEG(uint8_t* buf, int size, int timeout_ms) {
+    _buf = buf;
+    _pos = 0;
+    _size = size;
+    _seq = SEQ_READ_IDOL;
+    setOnResult(this, &USBHostCam::callback_motion_jpeg);
+    Timer timeout_t;
+    timeout_t.reset();
+    timeout_t.start();
+    while(timeout_t.read_ms() < timeout_ms && _seq != SEQ_READ_DONE && connected()) {
+        poll();
+        Thread::wait(1);
+    } 
+    return _pos;
+}
+
+/* virtual */ void USBHostCam::outputJPEG(uint8_t c, int status) { // from decodeMJPEG
+    if (_seq == SEQ_READ_IDOL) {
+        if (status == JPEG_START) {
+            _pos = 0;
+            _seq = SEQ_READ_EXEC;
+        }
+    }
+    if (_seq == SEQ_READ_EXEC) {
+        if (_pos < _size) {
+            _buf[_pos++] = c;  
+        }  
+        if (status == JPEG_END) {
+            _seq = SEQ_READ_DONE;
+        }
+    }
+}
+
+void USBHostCam::callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len) {
+        inputPacket(buf, len);
+}