This function gets the number of tiles constituting a page for file formats that support tiled pages for the image files located in the memory buffer.
Declaration:
 Copy Code |
|
|---|---|
AT_ERRCOUNT ACCUAPI IG_tile_count_get_mem( LPVOID lpImage, AT_UINT nImageSize, UINT nPageNum, LPUINT lpTileCountH, LPUINT lpTileCountV ); |
|
Arguments:
| lpImage | Pointer to the start of the image file in memory. |
| nImageSize | Size of image file in memory. |
| nPageNum | Page number for which to get the count of tiles. |
| lpTileCountH | Pointer to a UINT variable to receive the number of tiles horizontally (number of tiles in a row). |
| lpTileCountV | Pointer to a UINT variable to receive the number of tiles vertically (number of tiles in a column). |
Return Value:
Returns 0 if successful. Otherwise, returns the number of ImageGear errors that occurred during this function call.Supported Raster Image Formats:
All pixel formats supported by ImageGear Professional.
Sample:
None
Example:
| Copy Code |
|
|---|---|
char* lpBuffer; // Memory buffer with the image AT_UINT nBufferSize; // Size of the memory buffer UINT nTileRows; // Will receive number of tile rows UINT nTileCols; // Will receive number of tile cols AT_ERRCOUNT nErrcount; // Returned count of errors // Open a file and get its size FILE* fp = NULL; fopen_s(&fp, "picture_tiled.tif", "rb"); if(fp != NULL) { fseek(fp, 0, SEEK_END); nBufferSize = (AT_UINT)ftell(fp); fseek(fp, 0, SEEK_SET); // Allocate memory and read the image into the memory buffer lpBuffer = (char*)malloc(nBufferSize); fread(lpBuffer, 1, nBufferSize, fp); // File is no longer needed - close it fclose(fp); // Get image info nErrcount = IG_tile_count_get_mem(lpBuffer, nBufferSize, 1, &nTileRows, &nTileCols ); fclose(fp); // ... // Delete memory buffer free(lpBuffer); } |
|
Remarks:
Use this function when the file image is in memory.
The function returns 0 for both lpTileCountH and lpTileCountV if the image file format does not support tiled images.