escapi.h File Reference

This graph shows which files directly or indirectly include this file:

Classes
struct	SimpleCapParams

Typedefs
typedef int(*	countCaptureDevicesProc )()
typedef int(*	initCaptureProc )(unsigned int deviceno, struct SimpleCapParams *aParams)
typedef void(*	deinitCaptureProc )(unsigned int deviceno)
typedef void(*	doCaptureProc )(unsigned int deviceno)
typedef int(*	isCaptureDoneProc )(unsigned int deviceno)
typedef void(*	getCaptureDeviceNameProc )(unsigned int deviceno, char *namebuffer, int bufferlength)
typedef int(*	ESCAPIDLLVersionProc )()

Functions
int	setupESCAPI ()

Variables
countCaptureDevicesProc	countCaptureDevices
initCaptureProc	initCapture
deinitCaptureProc	deinitCapture
doCaptureProc	doCapture
isCaptureDoneProc	isCaptureDone
getCaptureDeviceNameProc	getCaptureDeviceName
ESCAPIDLLVersionProc	ESCAPIDLLVersion

---

Class Documentation

struct SimpleCapParams

Class Members
int	mHeight
int *	mTargetBuf
int	mWidth

Typedef Documentation

typedef int(* countCaptureDevicesProc)()

typedef void(* deinitCaptureProc)(unsigned int deviceno)

typedef void(* doCaptureProc)(unsigned int deviceno)

typedef int(* ESCAPIDLLVersionProc)()

typedef void(* getCaptureDeviceNameProc)(unsigned int deviceno, char *namebuffer, int bufferlength)

typedef int(* initCaptureProc)(unsigned int deviceno, struct SimpleCapParams *aParams)

typedef int(* isCaptureDoneProc)(unsigned int deviceno)

Function Documentation

int setupESCAPI

(

)

References countCaptureDevices, deinitCapture, doCapture, ESCAPIDLLVersion, getCaptureDeviceName, initCapture, initCOM, and isCaptureDone.

Referenced by SimpleDirectShowAcq::Open().

{
  /* Load DLL dynamically */
  HMODULE capdll = LoadLibrary("escapi.dll");
  if (capdll == NULL)
    return 0;

  /* Fetch function entry points */
  countCaptureDevices = (countCaptureDevicesProc)GetProcAddress(capdll, "countCaptureDevices");
  initCapture = (initCaptureProc)GetProcAddress(capdll, "initCapture");
  deinitCapture = (deinitCaptureProc)GetProcAddress(capdll, "deinitCapture");
  doCapture = (doCaptureProc)GetProcAddress(capdll, "doCapture");
  isCaptureDone = (isCaptureDoneProc)GetProcAddress(capdll, "isCaptureDone");
  initCOM = (initCOMProc)GetProcAddress(capdll, "initCOM");
  getCaptureDeviceName = (getCaptureDeviceNameProc)GetProcAddress(capdll, "getCaptureDeviceName");
  ESCAPIDLLVersion = (ESCAPIDLLVersionProc)GetProcAddress(capdll, "ESCAPIDLLVersion");

  /* Check that we got all the entry points */
  if (initCOM == NULL ||
      ESCAPIDLLVersion == NULL ||
      getCaptureDeviceName == NULL ||
      countCaptureDevices == NULL ||
      initCapture == NULL ||
      deinitCapture == NULL ||
      doCapture == NULL ||
      isCaptureDone == NULL)
      return 0;

  /* Verify DLL version */
  if (ESCAPIDLLVersion() != 0x200)
    return 0;

  /* Initialize COM.. */
  initCOM();

  /* and return the number of capture devices found. */
  return countCaptureDevices();
}

Here is the caller graph for this function:

Variable Documentation

countCaptureDevicesProc countCaptureDevices

Referenced by setupESCAPI().

deinitCaptureProc deinitCapture

Referenced by SimpleDirectShowAcq::Close(), and setupESCAPI().

doCaptureProc doCapture

Referenced by SimpleDirectShowAcq::CaptureFrame(), and setupESCAPI().

ESCAPIDLLVersionProc ESCAPIDLLVersion

Referenced by setupESCAPI().

getCaptureDeviceNameProc getCaptureDeviceName

Referenced by setupESCAPI().

initCaptureProc initCapture

Referenced by SimpleDirectShowAcq::Open(), and setupESCAPI().

isCaptureDoneProc isCaptureDone

Referenced by SimpleDirectShowAcq::CaptureFrame(), and setupESCAPI().