This function creates a multimedia instance from a file descriptor.
Declaration:
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AT_ERRCOUNT ACCUAPI IG_mult_open_FD(
AT_INT fd,
LPHIGMULT lphMult
);
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Arguments:
| Name | Type | Description |
| fd | AT_INT | File descriptor. |
| lphMult | LPHIGMULT | Handle to multimedia instance. |
Return Value:
Returns the number of ImageGear errors that occurred during this function call. If there are no errors, the return value is IGE_SUCCESS.
Supported Raster Image Formats:
This function does not process image pixels.
Sample:
None
Example:
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/* Get a multimedia file's duration using a file descriptor */ AT_ERRCOUNT nErrcount; /* Number of errors on stack */ HIGMULT hMult; /* Multimedia instance handle */ LPCSTR szFile; /* Name of file to open */ HANDLE fd; /* File descriptor */ AT_UINT numFrames; /* Total number of frames in file */ AT_UINT duration; /* Duration of file in milliseconds */ fd = CreateFile(szFile, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); nErrcount = IG_mult_open_FD(fd, &hMult); nErrcount = IG_mult_duration_get(hMult, &numFrames, &duration); nErrcount = IG_mult_close(hMult); CloseHandle(fd); |
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Remarks:
The file descriptor and contents must remain accessible until the multimedia instance is closed.