nikos chalikias / Mbed 2 deprecated n-bed-USBHostC270_example

testing n-Bed with a Logitech C270 camera

Dependencies:   USBHost mbed

Fork of USBHostC270_example by Norimasa Okamoto

USBHostCam/USBHostCam.cpp@14:449f809d07eb, 2015-05-21 (annotated)

Committer:
chalikias
Date:
Thu May 21 11:59:47 2015 +0000
Revision:
14:449f809d07eb
Parent:
12:ea4badc78215 
camera resolution reduced to 160x120, else memory overflow issues...

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 12:ea4badc78215 1 // USBHostCam.cpp
va009039 12:ea4badc78215 2 #include "USBHostCam.h"
va009039 12:ea4badc78215 3 #include "dbg.h"
va009039 12:ea4badc78215 4
va009039 12:ea4badc78215 5 //#define CAM_DEBUG 1
va009039 12:ea4badc78215 6 #ifdef CAM_DEBUG
va009039 12:ea4badc78215 7 #define CAM_DBG(x, ...) std::printf("[%s:%d]"x"\r\n", __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
va009039 12:ea4badc78215 8 #else
va009039 12:ea4badc78215 9 #define CAM_DBG(...) while(0);
va009039 12:ea4badc78215 10 #endif
va009039 12:ea4badc78215 11
va009039 12:ea4badc78215 12 // ------------------ HcControl Register ---------------------
va009039 12:ea4badc78215 13 #define OR_CONTROL_IE 0x00000008
va009039 12:ea4badc78215 14
va009039 12:ea4badc78215 15 CamInfo* getCamInfoList(); // CamInfo.cpp
va009039 12:ea4badc78215 16
va009039 12:ea4badc78215 17 USBHostCam::USBHostCam(uint8_t size, uint8_t option, CamInfo* user_caminfo)
va009039 12:ea4badc78215 18 {
va009039 12:ea4badc78215 19 CAM_DBG("size: %d, option: %d", size, option);
va009039 12:ea4badc78215 20 _caminfo_size = size;
va009039 12:ea4badc78215 21 _caminfo_option = option;
va009039 12:ea4badc78215 22 if (user_caminfo) {
va009039 12:ea4badc78215 23 CamInfoList = user_caminfo;
va009039 12:ea4badc78215 24 } else {
va009039 12:ea4badc78215 25 CamInfoList = getCamInfoList();
va009039 12:ea4badc78215 26 }
va009039 12:ea4badc78215 27 clearOnResult();
va009039 12:ea4badc78215 28 host = USBHost::getHostInst();
va009039 12:ea4badc78215 29 m_isoEp = new IsochronousEp;
va009039 12:ea4badc78215 30 init();
va009039 12:ea4badc78215 31 }
va009039 12:ea4badc78215 32
va009039 12:ea4badc78215 33 void USBHostCam::init()
va009039 12:ea4badc78215 34 {
va009039 12:ea4badc78215 35 CAM_DBG("");
va009039 12:ea4badc78215 36 dev_connected = false;
va009039 12:ea4badc78215 37 dev = NULL;
va009039 12:ea4badc78215 38 cam_intf = -1;
va009039 12:ea4badc78215 39 device_found = false;
va009039 12:ea4badc78215 40 caminfo_found = false;
va009039 12:ea4badc78215 41 }
va009039 12:ea4badc78215 42
va009039 12:ea4badc78215 43 bool USBHostCam::connected()
va009039 12:ea4badc78215 44 {
va009039 12:ea4badc78215 45 return dev_connected;
va009039 12:ea4badc78215 46 }
va009039 12:ea4badc78215 47
va009039 12:ea4badc78215 48 bool USBHostCam::connect()
va009039 12:ea4badc78215 49 {
va009039 12:ea4badc78215 50 if (dev_connected) {
va009039 12:ea4badc78215 51 return true;
va009039 12:ea4badc78215 52 }
va009039 12:ea4badc78215 53
va009039 12:ea4badc78215 54 for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
va009039 12:ea4badc78215 55 if ((dev = host->getDevice(i)) != NULL) {
va009039 12:ea4badc78215 56
va009039 12:ea4badc78215 57 CAM_DBG("Trying to connect Cam device\r\n");
va009039 12:ea4badc78215 58
va009039 12:ea4badc78215 59 if(host->enumerate(dev, this)) {
va009039 12:ea4badc78215 60 break;
va009039 12:ea4badc78215 61 }
va009039 12:ea4badc78215 62 if (device_found) {
va009039 12:ea4badc78215 63 USB_INFO("New Cam: %s device: VID:%04x PID:%04x [dev: %p - intf: %d]", caminfo->name, dev->getVid(), dev->getPid(), dev, cam_intf);
va009039 12:ea4badc78215 64 dev->setName(caminfo->name, cam_intf);
va009039 12:ea4badc78215 65 host->registerDriver(dev, cam_intf, this, &USBHostCam::onDisconnect);
va009039 12:ea4badc78215 66 int addr = dev->getAddress();
va009039 12:ea4badc78215 67 m_isoEp->init(addr, caminfo->en, caminfo->mps, caminfo->frameCount, caminfo->queueLimit);
va009039 12:ea4badc78215 68 uint8_t buf[26];
va009039 12:ea4badc78215 69 memset(buf, 0, sizeof(buf));
va009039 12:ea4badc78215 70 buf[2] = caminfo->formatIndex;
va009039 12:ea4badc78215 71 buf[3] = caminfo->frameIndex;
va009039 12:ea4badc78215 72 *reinterpret_cast<uint32_t*>(buf+4) = caminfo->interval;
va009039 12:ea4badc78215 73 USB_TYPE res = Control(SET_CUR, VS_COMMIT_CONTROL, 1, buf, sizeof(buf));
va009039 12:ea4badc78215 74 if (res != USB_TYPE_OK) {
va009039 12:ea4badc78215 75 CAM_DBG("SET_CUR VS_COMMIT_CONTROL FAILED");
va009039 12:ea4badc78215 76 }
va009039 12:ea4badc78215 77 res = setInterfaceAlternate(1, caminfo->if_alt);
va009039 12:ea4badc78215 78 if (res != USB_TYPE_OK) {
va009039 12:ea4badc78215 79 CAM_DBG("SET_INTERFACE FAILED");
va009039 12:ea4badc78215 80 }
va009039 12:ea4badc78215 81 for(int i = 0; i < 16; i++) {
va009039 12:ea4badc78215 82 report_cc_count[i] = 0;
va009039 12:ea4badc78215 83 report_ps_cc_count[i] = 0;
va009039 12:ea4badc78215 84 }
va009039 12:ea4badc78215 85 LPC_USB->HcControl |= OR_CONTROL_PLE; // PeriodicListEnable
va009039 12:ea4badc78215 86 LPC_USB->HcControl |= OR_CONTROL_IE; // IsochronousEnable
va009039 12:ea4badc78215 87
va009039 12:ea4badc78215 88 dev_connected = true;
va009039 12:ea4badc78215 89 return true;
va009039 12:ea4badc78215 90 }
va009039 12:ea4badc78215 91 }
va009039 12:ea4badc78215 92 }
va009039 12:ea4badc78215 93 init();
va009039 12:ea4badc78215 94 return false;
va009039 12:ea4badc78215 95 }
va009039 12:ea4badc78215 96
va009039 12:ea4badc78215 97 void USBHostCam::onDisconnect()
va009039 12:ea4badc78215 98 {
va009039 12:ea4badc78215 99 CAM_DBG("dev_connected: %d", dev_connected);
va009039 12:ea4badc78215 100 if (dev_connected) {
va009039 12:ea4badc78215 101 m_isoEp->disconnect();
va009039 12:ea4badc78215 102 init();
va009039 12:ea4badc78215 103 }
va009039 12:ea4badc78215 104 }
va009039 12:ea4badc78215 105
va009039 12:ea4badc78215 106 /*virtual*/ void USBHostCam::setVidPid(uint16_t vid, uint16_t pid)
va009039 12:ea4badc78215 107 {
va009039 12:ea4badc78215 108 CAM_DBG("vid:%04x,pid:%04x", vid, pid);
va009039 12:ea4badc78215 109 caminfo = CamInfoList;
va009039 12:ea4badc78215 110 while(caminfo->vid != 0) {
va009039 12:ea4badc78215 111 if (caminfo->vid == vid && caminfo->pid == pid &&
va009039 12:ea4badc78215 112 caminfo->size == _caminfo_size && caminfo->option == _caminfo_option) {
va009039 12:ea4badc78215 113 caminfo_found = true;
va009039 12:ea4badc78215 114 break;
va009039 12:ea4badc78215 115 }
va009039 12:ea4badc78215 116 caminfo++;
va009039 12:ea4badc78215 117 }
va009039 12:ea4badc78215 118 }
va009039 12:ea4badc78215 119
va009039 12:ea4badc78215 120 /*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
va009039 12:ea4badc78215 121 {
va009039 12:ea4badc78215 122 CAM_DBG("intf_nb=%d,intf_class=%02X,intf_subclass=%d,intf_protocol=%d", intf_nb, intf_class, intf_subclass, intf_protocol);
va009039 12:ea4badc78215 123 if ((cam_intf == -1) && caminfo_found) {
va009039 12:ea4badc78215 124 cam_intf = intf_nb;
va009039 12:ea4badc78215 125 device_found = true;
va009039 12:ea4badc78215 126 return true;
va009039 12:ea4badc78215 127 }
va009039 12:ea4badc78215 128 return false;
va009039 12:ea4badc78215 129 }
va009039 12:ea4badc78215 130
va009039 12:ea4badc78215 131 /*virtual*/ bool USBHostCam::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
va009039 12:ea4badc78215 132 {
va009039 12:ea4badc78215 133 CAM_DBG("intf_nb:%d,type:%d,dir:%d",intf_nb, type, dir);
va009039 12:ea4badc78215 134 return false;
va009039 12:ea4badc78215 135 }
va009039 12:ea4badc78215 136
va009039 12:ea4badc78215 137 #define SEQ_READ_IDOL 0
va009039 12:ea4badc78215 138 #define SEQ_READ_EXEC 1
va009039 12:ea4badc78215 139 #define SEQ_READ_DONE 2
va009039 12:ea4badc78215 140
va009039 12:ea4badc78215 141 int USBHostCam::readJPEG(uint8_t* buf, int size, int timeout_ms) {
va009039 12:ea4badc78215 142 _buf = buf;
va009039 12:ea4badc78215 143 _pos = 0;
va009039 12:ea4badc78215 144 _size = size;
va009039 12:ea4badc78215 145 _seq = SEQ_READ_IDOL;
va009039 12:ea4badc78215 146 setOnResult(this, &USBHostCam::callback_motion_jpeg);
va009039 12:ea4badc78215 147 Timer timeout_t;
va009039 12:ea4badc78215 148 timeout_t.reset();
va009039 12:ea4badc78215 149 timeout_t.start();
va009039 12:ea4badc78215 150 while(timeout_t.read_ms() < timeout_ms && _seq != SEQ_READ_DONE && connected()) {
va009039 12:ea4badc78215 151 poll();
va009039 12:ea4badc78215 152 Thread::wait(1);
va009039 12:ea4badc78215 153 }
va009039 12:ea4badc78215 154 return _pos;
va009039 12:ea4badc78215 155 }
va009039 12:ea4badc78215 156
va009039 12:ea4badc78215 157 /* virtual */ void USBHostCam::outputJPEG(uint8_t c, int status) { // from decodeMJPEG
va009039 12:ea4badc78215 158 if (_seq == SEQ_READ_IDOL) {
va009039 12:ea4badc78215 159 if (status == JPEG_START) {
va009039 12:ea4badc78215 160 _pos = 0;
va009039 12:ea4badc78215 161 _seq = SEQ_READ_EXEC;
va009039 12:ea4badc78215 162 }
va009039 12:ea4badc78215 163 }
va009039 12:ea4badc78215 164 if (_seq == SEQ_READ_EXEC) {
va009039 12:ea4badc78215 165 if (_pos < _size) {
va009039 12:ea4badc78215 166 _buf[_pos++] = c;
va009039 12:ea4badc78215 167 }
va009039 12:ea4badc78215 168 if (status == JPEG_END) {
va009039 12:ea4badc78215 169 _seq = SEQ_READ_DONE;
va009039 12:ea4badc78215 170 }
va009039 12:ea4badc78215 171 }
va009039 12:ea4badc78215 172 }
va009039 12:ea4badc78215 173
va009039 12:ea4badc78215 174 void USBHostCam::callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len) {
va009039 12:ea4badc78215 175 inputPacket(buf, len);
va009039 12:ea4badc78215 176 }