#include <stdio.h>
#include <stdlib.h>

#include <jpeglib.h>

/* this segfaults */

int
main (int argc, char *argv[])
{
  struct jpeg_compress_struct cinfo = { 0, };
  struct jpeg_error_mgr       jerr = { 0, };
  char *raw_data;
  int size, i, row_stride;

  cinfo.err = jpeg_std_error (&jerr);

  jpeg_create_compress (&cinfo);

  jpeg_stdio_dest (&cinfo, stdout);


  size = cinfo.image_width * cinfo.image_height * 2;

  raw_data = calloc (3, size);

  if (fread (raw_data, 1, size, stdin) < size) {
    perror ("fread");
  }


  cinfo.image_width = 720;
  cinfo.image_height = 1152;
  cinfo.in_color_space = JCS_RGB;
  cinfo.input_components = 3;
  jpeg_set_defaults (&cinfo);

  jpeg_set_quality (&cinfo, 70, TRUE);

  jpeg_start_compress (&cinfo, TRUE);

  row_stride = cinfo.image_width * 2;

  while (cinfo.next_scanline < cinfo.image_height) {
    jpeg_write_scanlines (&cinfo, (JSAMPROW *) raw_data + row_stride * cinfo.next_scanline, 1);
  }

  jpeg_finish_compress (&cinfo);
  jpeg_destroy_compress (&cinfo);

  return 0;
}