![](/media/cache/profiles/f095cedd23b99f1696fc8caecbcf257e.jpg.50x50_q85.jpg)
see: http://mbed.org/users/okini3939/notebook/wifi_webcam/
Dependencies: GSwifiInterface_ap_webcam USBHost mbed
USBHostCam/USBHostCam.cpp
- Committer:
- okini3939
- Date:
- 2014-06-06
- Revision:
- 0:8558bdecb0fa
File content as of revision 0:8558bdecb0fa:
// 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); }