diff options
Diffstat (limited to 'hl/test/test_image.c')
| -rw-r--r-- | hl/test/test_image.c | 741 |
1 files changed, 371 insertions, 370 deletions
diff --git a/hl/test/test_image.c b/hl/test/test_image.c index 9645bad..426ae1d 100644 --- a/hl/test/test_image.c +++ b/hl/test/test_image.c @@ -1,17 +1,17 @@ /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * - * Copyright by The HDF Group. * - * Copyright by the Board of Trustees of the University of Illinois. * - * All rights reserved. * - * * - * This file is part of HDF5. The full HDF5 copyright notice, including * - * terms governing use, modification, and redistribution, is contained in * - * the files COPYING and Copyright.html. COPYING can be found at the root * - * of the source code distribution tree; Copyright.html can be found at the * - * root level of an installed copy of the electronic HDF5 document set and * - * is linked from the top-level documents page. It can also be found at * - * http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * - * access to either file, you may request a copy from help@hdfgroup.org. * - * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ +* Copyright by The HDF Group. * +* Copyright by the Board of Trustees of the University of Illinois. * +* All rights reserved. * +* * +* This file is part of HDF5. The full HDF5 copyright notice, including * +* terms governing use, modification, and redistribution, is contained in * +* the files COPYING and Copyright.html. COPYING can be found at the root * +* of the source code distribution tree; Copyright.html can be found at the * +* root level of an installed copy of the electronic HDF5 document set and * +* is linked from the top-level documents page. It can also be found at * +* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * +* access to either file, you may request a copy from help@hdfgroup.org. * +* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ #include <stdlib.h> #include <string.h> @@ -61,31 +61,31 @@ static int read_palette(const char* file_name, rgb_t *palette, size_t palette_si unsigned char *image_data = NULL; /*------------------------------------------------------------------------- - * the main program - *------------------------------------------------------------------------- - */ +* the main program +*------------------------------------------------------------------------- +*/ int main(void) { int nerrors=0; - + nerrors += test_simple()<0 ?1:0; nerrors += test_data()<0 ?1:0; nerrors += test_generate()<0 ?1:0; - + if (nerrors) goto error; printf("All image tests passed.\n"); return 0; - + error: printf("***** %d IMAGE TEST%s FAILED! *****\n",nerrors, 1 == nerrors ? "" : "S"); return 1; } /*------------------------------------------------------------------------- - * a simple test that generates images and palettes - *------------------------------------------------------------------------- - */ +* a simple test that generates images and palettes +*------------------------------------------------------------------------- +*/ static int test_simple(void) { @@ -94,23 +94,24 @@ static int test_simple(void) hsize_t planes; hid_t fid; int i, j, n, space; + hsize_t u; char interlace[20]; hssize_t npals; - + /* 8-bit image */ unsigned char buf1 [ WIDTH*HEIGHT ]; unsigned char pal[ PAL_ENTRIES * 3 ]; /* palette array */ hsize_t pal_dims[2] = {PAL_ENTRIES,3}; /* palette dimensions */ - + /* 24-bit image */ unsigned char buf2 [ WIDTH*HEIGHT*3 ]; - + /* read data */ unsigned char buf1_out [ WIDTH*HEIGHT ]; unsigned char buf2_out [ WIDTH*HEIGHT*3 ]; unsigned char pal_out[ PAL_ENTRIES * 3 ]; /* palette array */ hsize_t pal_dims_out[2]; /* palette dimensions */ - + /* create an image */ space = WIDTH*HEIGHT / PAL_ENTRIES; for (i=0, j=0, n=0; i < WIDTH*HEIGHT; i++, j++ ) @@ -121,10 +122,10 @@ static int test_simple(void) n++; j=0; } - + } - - + + /* create an image */ space = WIDTH*HEIGHT / 256; for (i=0, j=0, n=0; i < WIDTH*HEIGHT*3; i+=3, j++ ) @@ -141,9 +142,9 @@ static int test_simple(void) j=0; } } - - /*------------------------------------------------------------------------- - * define a palette, blue to red tones + + /*------------------------------------------------------------------------- + * define a palette, blue to red tones *------------------------------------------------------------------------- */ for ( i=0, n=0; i<PAL_ENTRIES*3; i+=3, n++) @@ -152,140 +153,140 @@ static int test_simple(void) pal[i+1]=0; /* green */ pal[i+2]=255-n; /* blue */ } - + /* Create a new HDF5 file using default properties. */ fid = H5Fcreate(FILE_NAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT ); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * Indexed image test *------------------------------------------------------------------------- */ - + TESTING("indexed image"); - + /* Write image */ if ( H5IMmake_image_8bit( fid, IMAGE1_NAME, width, height, buf1 ) < 0 ) goto out; - + /* Make a palette */ if ( H5IMmake_palette( fid, PAL_NAME, pal_dims, pal ) < 0 ) goto out; - + /* Attach a palette to the image dataset */ if ( H5IMlink_palette( fid, IMAGE1_NAME, PAL_NAME ) < 0 ) goto out; - + /* Read image */ if ( H5IMget_image_info( fid, IMAGE1_NAME, &width, &height, &planes, interlace, &npals ) < 0 ) goto out; - + if ( H5IMread_image( fid, IMAGE1_NAME, buf1_out ) < 0 ) goto out; - - for (i = 0; i < height*width*planes; i++) + + for (u = 0; u < height*width*planes; u++) { - if ( buf1[i] != buf1_out[i] ) + if ( buf1[u] != buf1_out[u] ) goto out; - + } - - + + PASSED(); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * True color image test *------------------------------------------------------------------------- */ - + TESTING("true color image"); - + /* Write image */ if ( H5IMmake_image_24bit( fid, IMAGE2_NAME, width, height, "INTERLACE_PIXEL", buf2 ) ) goto out; - + /* Read image */ if ( H5IMget_image_info( fid, IMAGE2_NAME, &width, &height, &planes, interlace, &npals ) < 0 ) goto out; - + if ( H5IMread_image( fid, IMAGE2_NAME, buf2_out ) < 0 ) goto out; - - for (i = 0; i < height*width*planes; i++) + + for (u = 0; u < height*width*planes; u++) { - if ( buf2[i] != buf2_out[i] ) + if ( buf2[u] != buf2_out[u] ) goto out; } - - + + PASSED(); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * H5IMget_npalettes test *------------------------------------------------------------------------- */ - + TESTING("pallete functions"); - + if ( H5IMget_npalettes( fid, IMAGE1_NAME, &npals ) < 0 ) goto out; - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * H5IMget_palette_info test *------------------------------------------------------------------------- */ - + if ( H5IMget_palette_info( fid, IMAGE1_NAME, 0, pal_dims_out ) < 0 ) goto out; - - for (i = 0; i < 2; i++) + + for (i = 0; i < 2; i++) { - if ( pal_dims[i] != pal_dims_out[i] ) + if ( pal_dims[i] != pal_dims_out[i] ) goto out; } - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * H5IMget_palette test *------------------------------------------------------------------------- */ - + if ( H5IMget_palette( fid, IMAGE1_NAME, 0, pal_out ) < 0 ) goto out; - - for (i = 0; i < PAL_ENTRIES * 3; i++) + + for (i = 0; i < PAL_ENTRIES * 3; i++) { - if ( pal[i] != pal_out[i] ) + if ( pal[i] != pal_out[i] ) goto out; } - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * H5IMis_image test *------------------------------------------------------------------------- */ - + if ( H5IMis_image( fid, IMAGE1_NAME ) < 0 ) goto out; - + if ( H5IMis_image( fid, IMAGE2_NAME ) < 0 ) goto out; - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * H5IMis_palette test *------------------------------------------------------------------------- */ - + if ( H5IMis_palette( fid, PAL_NAME ) < 0 ) goto out; - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * end tests *------------------------------------------------------------------------- */ - + /* Close the file. */ - if(H5Fclose( fid ) < 0) + if(H5Fclose( fid ) < 0) goto out; - - + + PASSED(); return 0; @@ -301,9 +302,9 @@ out: /*------------------------------------------------------------------------- - * read sample realistic image data from ASCII files - *------------------------------------------------------------------------- - */ +* read sample realistic image data from ASCII files +*------------------------------------------------------------------------- +*/ static int test_data(void) { @@ -314,60 +315,60 @@ static int test_data(void) unsigned char pal[256*3]; /* buffer to hold an HDF5 palette */ rgb_t rgb[256]; /* buffer to hold a .pal file palette */ int i, n; - + /* create a file using default properties */ if ((fid=H5Fcreate(FILE2,H5F_ACC_TRUNC,H5P_DEFAULT,H5P_DEFAULT))<0) goto out; - + printf("Testing read ascii image data and generate images\n"); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * read 8bit image data *------------------------------------------------------------------------- */ - + TESTING2("make indexed image"); - + /* read first data file */ if (read_data(DATA_FILE1,&width,&height)<0) goto out; - + /* make an image */ if (H5IMmake_image_8bit(fid,IMAGE1_NAME,width,height,image_data)<0) goto out; - + PASSED(); - - + + TESTING2("attaching palettes"); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * palette #1. rainbow palette. data is contained in "pal_rgb.h" *------------------------------------------------------------------------- */ - + /* initialize the palette data */ pal_dims[0] = 256; pal_dims[1] = 3; - + /* make a palette */ if (H5IMmake_palette(fid,PAL1_NAME,pal_dims,pal_rgb)<0) goto out; - + /* attach a palette to the image dataset */ if (H5IMlink_palette(fid,IMAGE1_NAME,PAL1_NAME)<0) goto out; - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * palette #2. sepia palette. * read a PAL file and attach the palette to the HDF5 file *------------------------------------------------------------------------- */ - + /* read a PAL file */ if (read_palette(PAL2_FILE, rgb, sizeof(rgb))<0) goto out; - + /* transfer to the HDF5 buffer */ for ( i=0, n=0; i<256*3; i+=3, n++) { @@ -375,25 +376,25 @@ static int test_data(void) pal[i+1]=rgb[n].g; pal[i+2]=rgb[n].b; } - + /* make a palette */ if (H5IMmake_palette(fid,PAL2_NAME,pal_dims,pal)<0) goto out; - + /* attach the palette to the image dataset */ if (H5IMlink_palette(fid,IMAGE1_NAME,PAL2_NAME)<0) goto out; - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * palette #3. earth palette. * read a PAL file and attach the palette to the HDF5 file *------------------------------------------------------------------------- */ - + /* read a PAL file */ if (read_palette(PAL3_FILE, rgb, sizeof(rgb))<0) goto out; - + /* transfer to the HDF5 buffer */ for ( i=0, n=0; i<256*3; i+=3, n++) { @@ -401,19 +402,19 @@ static int test_data(void) pal[i+1]=rgb[n].g; pal[i+2]=rgb[n].b; } - + /* make a palette */ if (H5IMmake_palette(fid,PAL3_NAME,pal_dims,pal)<0) goto out; - + /* attach the palette to the image dataset */ if (H5IMlink_palette(fid,IMAGE1_NAME,PAL3_NAME)<0) goto out; - + PASSED(); - - - /*------------------------------------------------------------------------- + + + /*------------------------------------------------------------------------- * palette #4. blue-red * make a palette whith blue to red colors *------------------------------------------------------------------------- @@ -424,60 +425,60 @@ static int test_data(void) pal[i+1]=0; pal[i+2]=255-n; } - + /* make a palette */ if (H5IMmake_palette(fid,PAL4_NAME,pal_dims,pal)<0) goto out; - + /* attach the palette to the image dataset */ if (H5IMlink_palette(fid,IMAGE1_NAME,PAL4_NAME)<0) goto out; - - - /*------------------------------------------------------------------------- + + + /*------------------------------------------------------------------------- * true color image example with pixel interlace *------------------------------------------------------------------------- */ - + TESTING2("make true color image with pixel interlace"); - + /* read second data file */ if ((read_data(DATA_FILE2,&width,&height))<0) goto out; - + /* make image */ if ((H5IMmake_image_24bit(fid,IMAGE2_NAME,width,height,"INTERLACE_PIXEL",image_data))<0) goto out; - + PASSED(); - + /*------------------------------------------------------------------------- * True color image example with plane interlace *------------------------------------------------------------------------- */ - + TESTING2("make true color image with plane interlace"); - + /* read third data file */ if ((read_data(DATA_FILE3,&width,&height))<0) goto out; - + /* make image */ if ((H5IMmake_image_24bit(fid,IMAGE3_NAME,width,height,"INTERLACE_PLANE",image_data))<0) goto out; - + PASSED(); - - - /*------------------------------------------------------------------------- + + + /*------------------------------------------------------------------------- * close *------------------------------------------------------------------------- */ if (H5Fclose(fid)<0) goto out; - + return 0; - + /* error zone, gracefully close */ out: H5E_BEGIN_TRY { @@ -488,16 +489,16 @@ out: } - /* - The following test provides an examples of how to generate HDF5 image data from - floating point data. In the example we use real life topographic data - (from the North American hemisphere). In the dataset sea values are represented - as negative numbers and land values are represented as positive numbers. - The example generates 3 HDF5 images, one that generates an image from all the values, - another that generates an image from the land values and another that generates an - image from the sea values. - For the example we used data from MODB, the Mediterranean Oceanic Data Base - http://modb.oce.ulg.ac.be/ +/* +The following test provides an examples of how to generate HDF5 image data from +floating point data. In the example we use real life topographic data +(from the North American hemisphere). In the dataset sea values are represented +as negative numbers and land values are represented as positive numbers. +The example generates 3 HDF5 images, one that generates an image from all the values, +another that generates an image from the land values and another that generates an +image from the sea values. +For the example we used data from MODB, the Mediterranean Oceanic Data Base +http://modb.oce.ulg.ac.be/ */ @@ -512,14 +513,14 @@ static int test_generate(void) char *srcdir = getenv("srcdir"); /* the source directory */ char data_file[512]=""; /* buffer to hold name of existing data file */ int i; - + /* create a file using default properties */ if ((fid=H5Fcreate(FILE3,H5F_ACC_TRUNC,H5P_DEFAULT,H5P_DEFAULT))<0) goto out; - + printf("Testing read and process data and make indexed images\n"); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * compose the name of the file to open, using the srcdir, if appropriate *------------------------------------------------------------------------- */ @@ -529,12 +530,12 @@ static int test_generate(void) strcat(data_file, "/"); } strcat(data_file,DATA_FILE4); - + /*------------------------------------------------------------------------- * read data; the file data format is described below *------------------------------------------------------------------------- */ - + f = fopen( data_file, "r" ) ; if ( f == NULL ) { @@ -543,82 +544,82 @@ static int test_generate(void) return -1; } -/* -!The first line of the ASCII file contains the dimension of the array : -! IMAX, JMAX, KMAX. The integers are stored with the FORTRAN format I5. -!The second line contains the exclusion value, the minimum and the maximum value of this -! file. These numbers are stored with the FORTRAN format E12.5. -! The remaining lines contains the data of the array, with 5 numbers per line -! (except the last line for each I-line). -! The array is stored in horizontal slices from sea surface to sea bottom and from -! north to south. So the indexes go from : -! -! DO K = KMAX to 1 -! DO J = JMAX to 1 -! DO I = 1 to IMAX -! read -! OD -! OD -! OD -! -! ____________________________ -! / /| (imax,jmax,kmax) -! / sea surface / | -! / / | -! /__________________________ / | -! | | | -! | | | (imax,jmax,1) n -! | | / / -! | | / / -! ^ j | | / w <-----o-----> e -! k | / |__________________________|/ / -! | / (imax,1,1) / -! |----------> s -! i -! -*/ + /* + !The first line of the ASCII file contains the dimension of the array : + ! IMAX, JMAX, KMAX. The integers are stored with the FORTRAN format I5. + !The second line contains the exclusion value, the minimum and the maximum value of this + ! file. These numbers are stored with the FORTRAN format E12.5. + ! The remaining lines contains the data of the array, with 5 numbers per line + ! (except the last line for each I-line). + ! The array is stored in horizontal slices from sea surface to sea bottom and from + ! north to south. So the indexes go from : + ! + ! DO K = KMAX to 1 + ! DO J = JMAX to 1 + ! DO I = 1 to IMAX + ! read + ! OD + ! OD + ! OD + ! + ! ____________________________ + ! / /| (imax,jmax,kmax) + ! / sea surface / | + ! / / | + ! /__________________________ / | + ! | | | + ! | | | (imax,jmax,1) n + ! | | / / + ! | | / / + ! ^ j | | / w <-----o-----> e + ! k | / |__________________________|/ / + ! | / (imax,1,1) / + ! |----------> s + ! i + ! + */ fscanf( f, "%d %d %d", &imax, &jmax, &kmax ); fscanf( f, "%f %f %f", &valex, &xmin, &xmax ); - + data = (float*) malloc ( imax * jmax * kmax * sizeof( float )); image_data = (unsigned char*) malloc ( imax * jmax * kmax * sizeof( unsigned char )); - + for ( i = 0; i < imax * jmax * kmax; i++ ) { fscanf( f, "%f ", &value ); data[i] = value; } fclose( f ); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * transform the data from floating point to unsigned char * we are processing all the data here *------------------------------------------------------------------------- */ - + TESTING2("make indexed image from all the data"); - + for ( i = 0; i < imax * jmax * kmax; i++ ) { image_data[i] = (unsigned char)(( 255 * (data[i] - xmin ) ) / (xmax - xmin )); } - + /* Make the image */ if ((H5IMmake_image_8bit(fid,"All data",(hsize_t)imax,(hsize_t)jmax,image_data))<0) goto out; - + PASSED(); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * transform the data from floating point to unsigned char * here we just process the land data *------------------------------------------------------------------------- */ - + TESTING2("make indexed image from land data"); - + for ( i = 0; i < imax * jmax * kmax; i++ ) { if ( data[i] < 0 ) @@ -626,21 +627,21 @@ static int test_generate(void) else image_data[i] = (unsigned char)(( 255 * (data[i] ) ) / xmax ); } - + /* make the image */ if ((H5IMmake_image_8bit(fid,"Land data",(hsize_t)imax,(hsize_t)jmax,image_data))<0) goto out; - + PASSED(); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * transform the data from floating point to unsigned char * here we just process the sea data *------------------------------------------------------------------------- */ - + TESTING2("make indexed image from sea data"); - + for ( i = 0; i < imax * jmax * kmax; i++ ) { if ( data[i] > 0 ) @@ -648,24 +649,24 @@ static int test_generate(void) else image_data[i] = (unsigned char)(( 255 * (data[i] - xmin ) ) / xmin ); } - + /* make the image */ if ((H5IMmake_image_8bit(fid,"Sea data",(hsize_t)imax,(hsize_t)jmax,image_data))<0) goto out; - + PASSED(); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * make a palette and attach it to the datasets *------------------------------------------------------------------------- */ - + TESTING2("attaching palettes"); - + /* make a palette */ if ((H5IMmake_palette(fid,PAL1_NAME,pal_dims,pal_rgb))<0) goto out; - + /* attach the palette to the image datasets */ if ((H5IMlink_palette(fid,"All data",PAL1_NAME))<0) goto out; @@ -673,19 +674,19 @@ static int test_generate(void) goto out; if ((H5IMlink_palette(fid,"Sea data",PAL1_NAME))<0) goto out; - + PASSED(); - - - /*------------------------------------------------------------------------- + + + /*------------------------------------------------------------------------- * close *------------------------------------------------------------------------- */ if (H5Fclose(fid)<0) goto out; - + return 0; - + /* error zone, gracefully close */ out: H5E_BEGIN_TRY { @@ -697,25 +698,25 @@ out: /*------------------------------------------------------------------------- - * read_data - * utility function to read ASCII image data - * the files have a header of the type - * - * components - * n - * height - * n - * width - * n - * - * followed by the image data - * - *------------------------------------------------------------------------- - */ +* read_data +* utility function to read ASCII image data +* the files have a header of the type +* +* components +* n +* height +* n +* width +* n +* +* followed by the image data +* +*------------------------------------------------------------------------- +*/ static int read_data( const char* fname, /*IN*/ - hsize_t *width, /*OUT*/ - hsize_t *height /*OUT*/ ) + hsize_t *width, /*OUT*/ + hsize_t *height /*OUT*/ ) { int i, n; int color_planes; @@ -724,8 +725,8 @@ static int read_data( const char* fname, /*IN*/ int w, h; char *srcdir = getenv("srcdir"); /* the source directory */ char data_file[512]=""; /* buffer to hold name of existing data file */ - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * compose the name of the file to open, using "srcdir", if appropriate *------------------------------------------------------------------------- */ @@ -736,62 +737,62 @@ static int read_data( const char* fname, /*IN*/ strcat(data_file, "/"); } strcat(data_file,fname); - - /*------------------------------------------------------------------------- + + /*------------------------------------------------------------------------- * read *------------------------------------------------------------------------- */ - + f = fopen(data_file, "r"); if ( f == NULL ) { printf( "Could not open file %s. Try set $srcdir \n", data_file ); return -1; } - + fscanf( f, "%s", str ); fscanf( f, "%d", &color_planes ); fscanf( f, "%s", str ); fscanf( f, "%d", &h); fscanf( f, "%s", str ); fscanf( f, "%d", &w); - + *width = (hsize_t)w; *height = (hsize_t)h; - + if ( image_data ) { free( image_data ); image_data=NULL; } - + image_data = (unsigned char*) malloc (w * h * color_planes * sizeof( unsigned char )); - + for (i = 0; i < h * w * color_planes ; i++) { fscanf( f, "%d",&n ); image_data[i] = (unsigned char)n; } fclose(f); - + return 1; - + } /*------------------------------------------------------------------------- - * read_palette - * Read an ASCII palette file .PAL into an array - * the files have a header of the type - * - * Parameters: - * fname - name of file to read. - * palette - array of rgb_t to store the read palette. - * palette_size - number of elements in 'palette' array - * - *------------------------------------------------------------------------- - */ +* read_palette +* Read an ASCII palette file .PAL into an array +* the files have a header of the type +* +* Parameters: +* fname - name of file to read. +* palette - array of rgb_t to store the read palette. +* palette_size - number of elements in 'palette' array +* +*------------------------------------------------------------------------- +*/ #define STRING_JASC "JASC-PAL" @@ -803,118 +804,118 @@ static int read_palette(const char* fname, rgb_t *palette, size_t palette_size) { - FILE *file; - char buffer[80]; - unsigned u; - unsigned int red; - unsigned int green; - unsigned int blue; - unsigned nentries; - char *srcdir = getenv("srcdir"); /* the source directory */ - char data_file[512]; /* buffer to hold name of existing data file */ + FILE *file; + char buffer[80]; + unsigned u; + unsigned int red; + unsigned int green; + unsigned int blue; + unsigned nentries; + char *srcdir = getenv("srcdir"); /* the source directory */ + char data_file[512]; /* buffer to hold name of existing data file */ -/*------------------------------------------------------------------------- - * compose the name of the file to open, using "srcdir", if appropriate - *------------------------------------------------------------------------- - */ - strcpy(data_file, ""); - if (srcdir) - { - strcpy(data_file, srcdir); - strcat(data_file, "/"); - } - strcat(data_file,fname); - - /* ensure the given palette is valid */ - if (!palette) - return -1; - - /* open the input file */ - if (!(file = fopen(data_file, "r"))) - { - printf( "Could not open file %s. Try set $srcdir \n", data_file ); - return -1; - } - - /* read the file ident string */ - if (fgets(buffer, sizeof(buffer), file) == NULL) - { - fclose(file); - return -1; - } - - /* ensure it matches the palette file ident string */ - if ( strncmp(buffer, STRING_JASC, sizeof(STRING_JASC) - 1) != 0 && - strncmp(buffer, STRING_CWPAL, sizeof(STRING_CWPAL) - 1) != 0 ) - { - fclose(file); - return -1; - } - - /* read the version string */ - if (fgets(buffer, sizeof(buffer), file) == NULL) - { - fclose(file); - return -1; - } - - /* ensure it matches the palette file version string */ - if ( strncmp(buffer, VERSION_JASC, sizeof(VERSION_JASC) - 1) != 0 && - strncmp(buffer, VERSION_CWPAL, sizeof(VERSION_CWPAL) - 1) != 0 ) - { - fclose(file); - return -1; - } - - /* read the number of colors */ - if (fgets(buffer, sizeof(buffer), file) == NULL) - { - fclose(file); - return -1; - } - - - /* extract the number of colors. + /*------------------------------------------------------------------------- + * compose the name of the file to open, using "srcdir", if appropriate + *------------------------------------------------------------------------- + */ + strcpy(data_file, ""); + if (srcdir) + { + strcpy(data_file, srcdir); + strcat(data_file, "/"); + } + strcat(data_file,fname); + + /* ensure the given palette is valid */ + if (!palette) + return -1; + + /* open the input file */ + if (!(file = fopen(data_file, "r"))) + { + printf( "Could not open file %s. Try set $srcdir \n", data_file ); + return -1; + } + + /* read the file ident string */ + if (fgets(buffer, sizeof(buffer), file) == NULL) + { + fclose(file); + return -1; + } + + /* ensure it matches the palette file ident string */ + if ( strncmp(buffer, STRING_JASC, sizeof(STRING_JASC) - 1) != 0 && + strncmp(buffer, STRING_CWPAL, sizeof(STRING_CWPAL) - 1) != 0 ) + { + fclose(file); + return -1; + } + + /* read the version string */ + if (fgets(buffer, sizeof(buffer), file) == NULL) + { + fclose(file); + return -1; + } + + /* ensure it matches the palette file version string */ + if ( strncmp(buffer, VERSION_JASC, sizeof(VERSION_JASC) - 1) != 0 && + strncmp(buffer, VERSION_CWPAL, sizeof(VERSION_CWPAL) - 1) != 0 ) + { + fclose(file); + return -1; + } + + /* read the number of colors */ + if (fgets(buffer, sizeof(buffer), file) == NULL) + { + fclose(file); + return -1; + } + + + /* extract the number of colors. check for missing version or number of colors in this case it reads the first entry */ - if ( strlen( buffer ) > 4 ) - { - fclose(file); - return -1; - } - - if (sscanf(buffer, "%u", &nentries) != 1) - { - fclose(file); - return -1; - } - - /* ensure there are a sensible number of colors in the palette */ - if ((nentries > 256) || (nentries > palette_size)) - { - fclose(file); - return(-1); - } - - /* read the palette entries */ - for (u = 0; u < nentries; u++) - { - /* extract the red, green and blue color components. */ - if (fscanf(file, "%u %u %u", &red, &green, &blue) != 3) - { - fclose(file); - return -1; - } - /* store this palette entry */ - palette[u].r = (unsigned char)red; - palette[u].g = (unsigned char)green; - palette[u].b = (unsigned char)blue; - } - - /* close file */ - fclose(file); - - return nentries; + if ( strlen( buffer ) > 4 ) + { + fclose(file); + return -1; + } + + if (sscanf(buffer, "%u", &nentries) != 1) + { + fclose(file); + return -1; + } + + /* ensure there are a sensible number of colors in the palette */ + if ((nentries > 256) || (nentries > palette_size)) + { + fclose(file); + return(-1); + } + + /* read the palette entries */ + for (u = 0; u < nentries; u++) + { + /* extract the red, green and blue color components. */ + if (fscanf(file, "%u %u %u", &red, &green, &blue) != 3) + { + fclose(file); + return -1; + } + /* store this palette entry */ + palette[u].r = (unsigned char)red; + palette[u].g = (unsigned char)green; + palette[u].b = (unsigned char)blue; + } + + /* close file */ + fclose(file); + + return nentries; } |