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https://github.com/HDFGroup/hdf5.git
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57a2e33c57
bug fixes. Description: Added #include "hdf5_hl.h" to each example programs. Platforms tested: Heping.
171 lines
5.0 KiB
C
171 lines
5.0 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include "hdf5.h"
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#include "hdf5_hl.h"
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#include <stdlib.h>
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#include <string.h>
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#define DATA_FILE1 "image8.txt"
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#define DATA_FILE2 "image24pixel.txt"
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#define IMAGE1_NAME "image8bit"
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#define IMAGE2_NAME "image24bitpixel"
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#define PAL_NAME "palette"
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#define PAL_ENTRIES 256
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static int read_data(const char* file_name, hsize_t *width, hsize_t *height );
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unsigned char *gbuf = 0; /* global buffer for image data */
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int main( void )
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{
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hid_t file_id; /* HDF5 file identifier */
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hsize_t width; /* width of image */
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hsize_t height; /* height of image */
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unsigned char pal[ PAL_ENTRIES * 3 ]; /* palette array */
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hsize_t pal_dims[2] = {PAL_ENTRIES,3}; /* palette dimensions */
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herr_t status, i, n;
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/* create a new HDF5 file using default properties. */
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file_id = H5Fcreate( "ex_image2.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT );
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/* read first data file */
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if (read_data(DATA_FILE1,&width,&height)<0)
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goto out;
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/* make the image */
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status=H5IMmake_image_8bit( file_id, IMAGE1_NAME, width, height, gbuf );
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/*-------------------------------------------------------------------------
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* define a palette, blue to red tones
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*-------------------------------------------------------------------------
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*/
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for ( i=0, n=0; i<PAL_ENTRIES*3; i+=3, n++)
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{
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pal[i] =n; /* red */
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pal[i+1]=0; /* green */
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pal[i+2]=255-n; /* blue */
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}
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/* make a palette */
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status=H5IMmake_palette( file_id, PAL_NAME, pal_dims, pal );
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/* attach the palette to the image */
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status=H5IMlink_palette( file_id, IMAGE1_NAME, PAL_NAME );
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/*-------------------------------------------------------------------------
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* True color image example with pixel interlace
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*-------------------------------------------------------------------------
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*/
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/* read second data file */
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if (read_data(DATA_FILE2,&width,&height)<0)
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goto out;
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/* make dataset */
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status=H5IMmake_image_24bit( file_id, IMAGE2_NAME, width, height, "INTERLACE_PIXEL", gbuf );
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/* close the file. */
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H5Fclose( file_id );
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return 0;
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out:
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printf("Error on return function...Exiting\n");
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return 1;
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}
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/*-------------------------------------------------------------------------
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* read_data
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* utility function to read ASCII image data
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* the files have a header of the type
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*
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* components
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* n
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* height
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* n
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* width
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* n
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*
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* followed by the image data
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*
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*-------------------------------------------------------------------------
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*/
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static int read_data( const char* fname, /*IN*/
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hsize_t *width, /*OUT*/
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hsize_t *height /*OUT*/ )
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{
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int i, n;
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int color_planes;
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char str[20];
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FILE *f;
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int w, h;
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char *srcdir = getenv("srcdir"); /* the source directory */
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char data_file[512]=""; /* buffer to hold name of existing data file */
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/*-------------------------------------------------------------------------
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* compose the name of the file to open, using "srcdir", if appropriate
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*-------------------------------------------------------------------------
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*/
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strcpy(data_file, "");
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if (srcdir)
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{
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strcpy(data_file, srcdir);
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strcat(data_file, "/");
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}
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strcat(data_file,fname);
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/*-------------------------------------------------------------------------
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* read
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*-------------------------------------------------------------------------
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*/
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f = fopen(data_file, "r");
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if ( f == NULL )
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{
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printf( "Could not open file %s. Try set $srcdir \n", data_file );
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return -1;
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}
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fscanf( f, "%s", str );
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fscanf( f, "%d", &color_planes );
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fscanf( f, "%s", str );
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fscanf( f, "%d", &h);
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fscanf( f, "%s", str );
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fscanf( f, "%d", &w);
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*width = (hsize_t)w;
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*height = (hsize_t)h;
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if ( gbuf )
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{
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free( gbuf );
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gbuf=NULL;
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}
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gbuf = (unsigned char*) malloc (w * h * color_planes * sizeof( unsigned char ));
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for (i = 0; i < h * w * color_planes ; i++)
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{
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fscanf( f, "%d",&n );
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gbuf[i] = (unsigned char)n;
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}
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fclose(f);
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return 1;
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}
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