| 1 | /********************************************************************** <BR>
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| 2 | This file is part of Crack dot Com's free source code release of
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| 3 | Golgotha. <a href="http://www.crack.com/golgotha_release"> <BR> for
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| 4 | information about compiling & licensing issues visit this URL</a>
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| 5 | <PRE> If that doesn't help, contact Jonathan Clark at
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| 6 | golgotha_source@usa.net (Subject should have "GOLG" in it)
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| 7 | ***********************************************************************/
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| 8 |
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| 9 | #include "quantize/histogram.hh"
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| 10 | #include "error/error.hh"
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| 11 | #include "image/image.hh"
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| 12 | #include <memory.h>
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| 13 | #include "palette/pal.hh"
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| 14 | #include "file/file.hh"
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| 15 |
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| 16 |
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| 17 | i4_histogram_class::i4_histogram_class()
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| 18 | {
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| 19 | memset(reference,0,sizeof(reference));
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| 20 | memset(counts,0,sizeof(counts));
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| 21 | tcolors=0;
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| 22 | total_pixels=0;
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| 23 | }
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| 24 |
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| 25 | void i4_histogram_class::add_image_colors(i4_image_class *im, int counts_per_pixel)
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| 26 | {
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| 27 | if (im->get_pal()->source.pixel_depth!=I4_32BIT)
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| 28 | {
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| 29 | i4_warning("add_image_colors : image type not supported");
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| 30 | return ;
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| 31 | }
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| 32 |
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| 33 |
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| 34 |
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| 35 | w32 loop_count=im->width()*im->height();
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| 36 |
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| 37 | // this will iterate through all the pixels
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| 38 | w32 *pixel=(w32 *)im->data;
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| 39 |
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| 40 | for (; loop_count; loop_count--)
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| 41 | {
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| 42 | i4_color c=*pixel;
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| 43 |
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| 44 | // convert the color to 16 bit
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| 45 | c=
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| 46 | (((c&0xff0000) >> (16+3)) << (6+5)) |
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| 47 | (((c&0x00ff00) >> (8+2)) << (5+0)) |
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| 48 | (((c&0x0000ff) >> (0+3)) << (0+0)) ;
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| 49 |
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| 50 | increment_color(c,counts_per_pixel);
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| 51 |
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| 52 | // move to the next pixel in the image
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| 53 | ++pixel;
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| 54 | }
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| 55 |
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| 56 | }
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| 57 |
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| 58 | void i4_histogram_class::save(i4_file_class *fp)
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| 59 | {
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| 60 | w32 i;
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| 61 | fp->write_32(tcolors);
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| 62 | fp->write_32(total_pixels);
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| 63 |
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| 64 | for (i=0; i<HIST_SIZE; i++)
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| 65 | {
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| 66 | reference[i]=s_to_lsb(reference[i]);
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| 67 | counts[i]=l_to_lsb(counts[i]);
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| 68 | }
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| 69 |
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| 70 | fp->write(reference, sizeof(reference));
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| 71 | fp->write(counts, sizeof(counts));
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| 72 |
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| 73 | for (i=0; i<HIST_SIZE; i++)
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| 74 | {
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| 75 | reference[i]=s_to_lsb(reference[i]);
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| 76 | counts[i]=l_to_lsb(counts[i]);
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| 77 | }
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| 78 | }
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| 79 |
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| 80 | void i4_histogram_class::load(i4_file_class *fp)
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| 81 | {
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| 82 | w32 i;
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| 83 | tcolors=fp->read_32();
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| 84 | total_pixels=fp->read_32();
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| 85 |
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| 86 | fp->read(reference, sizeof(reference));
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| 87 | fp->read(counts, sizeof(counts));
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| 88 |
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| 89 | for (i=0; i<HIST_SIZE; i++)
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| 90 | {
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| 91 | reference[i]=s_to_lsb(reference[i]);
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| 92 | counts[i]=l_to_lsb(counts[i]);
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| 93 | }
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| 94 | }
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