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Add -nojfif param

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With this parem do not write JFIF APP0 marker segment. Reduce size in 18 bytes.  This is a mandatory marker, but no error in know programs if are lost. Safe for web use.
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JosePineiro
2018-06-04 21:06:40 +02:00
committed by GitHub
parent b85de60a9f
commit fce0382181
1 changed files with 4 additions and 0 deletions
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4
cjpeg.c
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@@ -196,6 +196,7 @@ usage (void)
fprintf(stderr, " -tune-ms-ssim Tune trellis optimization for MS-SSIM\n"); fprintf(stderr, " -tune-ms-ssim Tune trellis optimization for MS-SSIM\n");
fprintf(stderr, "Switches for advanced users:\n"); fprintf(stderr, "Switches for advanced users:\n");
fprintf(stderr, " -noovershoot Disable black-on-white deringing via overshoot\n"); fprintf(stderr, " -noovershoot Disable black-on-white deringing via overshoot\n");
fprintf(stderr, " -nojfif Do not write JFIF. Reduce size in 18 bytes but break standar. No know problems in web use.\n");
#ifdef C_ARITH_CODING_SUPPORTED #ifdef C_ARITH_CODING_SUPPORTED
fprintf(stderr, " -arithmetic Use arithmetic coding\n"); fprintf(stderr, " -arithmetic Use arithmetic coding\n");
#endif #endif
@@ -583,6 +584,9 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
} else if (keymatch(arg, "noovershoot", 11)) { } else if (keymatch(arg, "noovershoot", 11)) {
jpeg_c_set_bool_param(cinfo, JBOOLEAN_OVERSHOOT_DERINGING, FALSE); jpeg_c_set_bool_param(cinfo, JBOOLEAN_OVERSHOOT_DERINGING, FALSE);
} else if (keymatch(arg, "nojfif", 6)) {
cinfo->write_JFIF_header = 0;
} else { } else {
fprintf(stderr, "%s: unknown option '%s'\n", progname, arg); fprintf(stderr, "%s: unknown option '%s'\n", progname, arg);
usage(); /* bogus switch */ usage(); /* bogus switch */