65 lines
1.3 KiB
C
Executable File
65 lines
1.3 KiB
C
Executable File
#include <setjmp.h>
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#include <stdio.h>
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#include <jpeglib.h>
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#include <stdlib.h>
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#include "compress.h"
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void cclt_compress(char* output_file, unsigned char* image_buffer)
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{
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struct jpeg_compress_struct cinfo;
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struct jpeg_error_mgr jerr;
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FILE * outfile;
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JSAMPROW row_pointer[1];
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int row_stride;
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if ((outfile = fopen(output_file, "wb")) == NULL) {
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fprintf(stderr, "can't open %s\n", output_file);
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exit(1);
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}
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cinfo.err = jpeg_std_error(&jerr);
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jpeg_create_compress(&cinfo);
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jpeg_stdio_dest(&cinfo, outfile);
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cinfo.image_width = 80;
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cinfo.image_height = 80;
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cinfo.input_components = 3;
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cinfo.in_color_space = JCS_RGB;
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jpeg_set_defaults(&cinfo);
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cinfo.dct_method = JDCT_FLOAT;
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cinfo.optimize_coding = TRUE;
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cinfo.smoothing_factor = 50;
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jpeg_set_quality(&cinfo, 80, TRUE );
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jpeg_set_colorspace(&cinfo, JCS_RGB);
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jpeg_start_compress(&cinfo, TRUE);
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//TODO cambia
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row_stride = 80 * 3;//image_width * 3;
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while (cinfo.next_scanline < cinfo.image_height) {
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printf("%d%\r", cinfo.next_scanline * 100 / cinfo.image_height);
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row_pointer[0] = &image_buffer[cinfo.next_scanline * row_stride];
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(void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
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}
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printf("%d%\n", cinfo.next_scanline * 100 / cinfo.image_height);
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jpeg_finish_compress(&cinfo);
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fclose(outfile);
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jpeg_destroy_compress(&cinfo);
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}
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