libwebp/enc/config.c

19 int WebPConfigInitInternal(WebPConfig* const config,
24   if (config == NULL) return 0;
26   config->quality = quality;
27   config->target_size = 0;
28   config->target_PSNR = 0.;
29   config->method = 4;
30   config->sns_strength = 50;
31   config->filter_strength = 20;   // default: light filtering
32   config->filter_sharpness = 0;
33   config->filter_type = 0;        // default: simple
34   config->partitions = 0;
35   config->segments = 4;
36   config->pass = 1;
37   config->show_compressed = 0;
38   config->preprocessing = 0;
39   config->autofilter = 0;
44       config->sns_strength = 80;
45       config->filter_sharpness = 4;
46       config->filter_strength = 35;
49       config->sns_strength = 80;
50       config->filter_sharpness = 3;
51       config->filter_strength = 30;
54       config->sns_strength = 25;
55       config->filter_sharpness = 6;
56       config->filter_strength = 10;
59       config->sns_strength = 0;
60       config->filter_strength = 0;   // disable filtering to retain sharpness
63       config->sns_strength = 0;
64       config->filter_strength = 0;   // disable filtering to retain sharpness
65       config->segments = 2;
71   return WebPValidateConfig(config);
74 int WebPValidateConfig(const WebPConfig* const config) {
75   if (config == NULL) return 0;
76   if (config->quality < 0 || config->quality > 100)
78   if (config->target_size < 0)
80   if (config->target_PSNR < 0)
82   if (config->method < 0 || config->method > 6)
84   if (config->segments < 1 || config->segments > 4)
86   if (config->sns_strength < 0 || config->sns_strength > 100)
88   if (config->filter_strength < 0 || config->filter_strength > 100)
90   if (config->filter_sharpness < 0 || config->filter_sharpness > 7)
92   if (config->filter_type < 0 || config->filter_type > 1)
94   if (config->autofilter < 0 || config->autofilter > 1)
96   if (config->pass < 1 || config->pass > 10)
98   if (config->show_compressed < 0 || config->show_compressed > 1)
100   if (config->preprocessing < 0 || config->preprocessing > 1)
102   if (config->partitions < 0 || config->partitions > 3)