Diff: KL46Z_USBHostC270/USBHostCam.cpp

Revision:

1:22304b8f8395

Child:

2:2a40888db9fc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/KL46Z_USBHostC270/USBHostCam.cpp	Tue Jan 28 06:54:16 2014 +0000
@@ -0,0 +1,101 @@
+// USBHostCam.cpp
+#include "USBHostCam.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
+#define CAM_INFO(...) do{fprintf(stderr,__VA_ARGS__);}while(0);
+
+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();
+    setup();
+}
+
+void USBHostCam::setup() {
+    caminfo = CamInfoList;
+    bool found = false;
+    while(caminfo->vid != 0) {
+        if (caminfo->vid == host->dev.vid && caminfo->pid == host->dev.pid && 
+            caminfo->size == _caminfo_size && caminfo->option == _caminfo_option) {
+            found = true;
+            break;
+        }
+        caminfo++;
+    }
+    if (!found) {
+        CAM_INFO("caminfo not found.\n");
+        exit(1);
+    }
+    CAM_INFO("Found: %s\n", caminfo->name);
+
+    ep_iso_in.setAddress(caminfo->en);
+    ep_iso_in.setSize(caminfo->mps);
+    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");
+    }
+}
+
+#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) {
+        poll();
+    } 
+    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);
+}