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Add descriptions of default configuration in help info.

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Change-Id: I43188fab5f57bd45aa3e564df52e36cc37b1bb2f
This commit is contained in:
Hui Su
2016-08-09 17:03:55 +00:00
committed by James Zern
parent 1269dc7cfb
commit 74f6f9e793
3 changed files with 34 additions and 26 deletions
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33
examples/cwebp.c
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@ -521,9 +521,10 @@ static void HelpLong(void) {
printf("\nOptions:\n");
printf(" -h / -help ............. short help\n");
printf(" -H / -longhelp ......... long help\n");
printf(" -q <float> ............. quality factor (0:small..100:big)\n");
printf(" -alpha_q <int> ......... transparency-compression quality "
"(0..100)\n");
printf(" -q <float> ............. quality factor (0:small..100:big), "
"default=75\n");
printf(" -alpha_q <int> ......... transparency-compression quality (0..100),"
"\n default=100\n");
printf(" -preset <string> ....... preset setting, one of:\n");
printf(" default, photo, picture,\n");
printf(" drawing, icon, text\n");
@ -531,16 +532,20 @@ static void HelpLong(void) {
printf(" -z <int> ............... activates lossless preset with given\n"
" level in [0:fast, ..., 9:slowest]\n");
printf("\n");
printf(" -m <int> ............... compression method (0=fast, 6=slowest)\n");
printf(" -segments <int> ........ number of segments to use (1..4)\n");
printf(" -m <int> ............... compression method (0=fast, 6=slowest), "
"default=4\n");
printf(" -segments <int> ........ number of segments to use (1..4), "
"default=4\n");
printf(" -size <int> ............ target size (in bytes)\n");
printf(" -psnr <float> .......... target PSNR (in dB. typically: 42)\n");
printf("\n");
printf(" -s <int> <int> ......... input size (width x height) for YUV\n");
printf(" -sns <int> ............. spatial noise shaping (0:off, 100:max)\n");
printf(" -f <int> ............... filter strength (0=off..100)\n");
printf(" -sns <int> ............. spatial noise shaping (0:off, 100:max), "
"default=50\n");
printf(" -f <int> ............... filter strength (0=off..100), "
"default=60\n");
printf(" -sharpness <int> ....... "
"filter sharpness (0:most .. 7:least sharp)\n");
"filter sharpness (0:most .. 7:least sharp), default=0\n");
printf(" -strong ................ use strong filter instead "
"of simple (default)\n");
printf(" -nostrong .............. use simple filter instead of strong\n");
@ -557,19 +562,21 @@ static void HelpLong(void) {
printf(" -print_ssim ............ prints averaged SSIM distortion\n");
printf(" -print_lsim ............ prints local-similarity distortion\n");
printf(" -d <file.pgm> .......... dump the compressed output (PGM file)\n");
printf(" -alpha_method <int> .... transparency-compression method (0..1)\n");
printf(" -alpha_method <int> .... transparency-compression method (0..1), "
"default=1\n");
printf(" -alpha_filter <string> . predictive filtering for alpha plane,\n");
printf(" one of: none, fast (default) or best\n");
printf(" -exact ................. preserve RGB values in transparent area"
"\n");
printf(" -exact ................. preserve RGB values in transparent area, "
"default=off\n");
printf(" -blend_alpha <hex> ..... blend colors against background color\n"
" expressed as RGB values written in\n"
" hexadecimal, e.g. 0xc0e0d0 for red=0xc0\n"
" green=0xe0 and blue=0xd0\n");
printf(" -noalpha ............... discard any transparency information\n");
printf(" -lossless .............. encode image losslessly\n");
printf(" -lossless .............. encode image losslessly, default=off\n");
printf(" -near_lossless <int> ... use near-lossless image\n"
" preprocessing (0..100=off)\n");
" preprocessing (0..100=off), "
"default=100\n");
#ifdef WEBP_EXPERIMENTAL_FEATURES
printf(" -delta_palettization ... use delta palettization\n");
#endif // WEBP_EXPERIMENTAL_FEATURES