24 int WebPConfigInitInternal(WebPConfig* config,  in WebPConfigInitInternal()  argument
29   if (config == NULL) return 0;  in WebPConfigInitInternal()
31   config->quality = quality;  in WebPConfigInitInternal()
32   config->target_size = 0;  in WebPConfigInitInternal()
33   config->target_PSNR = 0.;  in WebPConfigInitInternal()
34   config->method = 4;  in WebPConfigInitInternal()
35   config->sns_strength = 50;  in WebPConfigInitInternal()
36   config->filter_strength = 60;   // rather high filtering, helps w/ gradients.  in WebPConfigInitInternal()
37   config->filter_sharpness = 0;  in WebPConfigInitInternal()
38   config->filter_type = 1;        // default: strong (so U/V is filtered too)  in WebPConfigInitInternal()
39   config->partitions = 0;  in WebPConfigInitInternal()
40   config->segments = 4;  in WebPConfigInitInternal()
41   config->pass = 1;  in WebPConfigInitInternal()
42   config->show_compressed = 0;  in WebPConfigInitInternal()
43   config->preprocessing = 0;  in WebPConfigInitInternal()
44   config->autofilter = 0;  in WebPConfigInitInternal()
45   config->partition_limit = 0;  in WebPConfigInitInternal()
46   config->alpha_compression = 1;  in WebPConfigInitInternal()
47   config->alpha_filtering = 1;  in WebPConfigInitInternal()
48   config->alpha_quality = 100;  in WebPConfigInitInternal()
49   config->lossless = 0;  in WebPConfigInitInternal()
50   config->image_hint = WEBP_HINT_DEFAULT;  in WebPConfigInitInternal()
51   config->emulate_jpeg_size = 0;  in WebPConfigInitInternal()
52   config->thread_level = 0;  in WebPConfigInitInternal()
53   config->low_memory = 0;  in WebPConfigInitInternal()
58       config->sns_strength = 80;  in WebPConfigInitInternal()
59       config->filter_sharpness = 4;  in WebPConfigInitInternal()
60       config->filter_strength = 35;  in WebPConfigInitInternal()
63       config->sns_strength = 80;  in WebPConfigInitInternal()
64       config->filter_sharpness = 3;  in WebPConfigInitInternal()
65       config->filter_strength = 30;  in WebPConfigInitInternal()
68       config->sns_strength = 25;  in WebPConfigInitInternal()
69       config->filter_sharpness = 6;  in WebPConfigInitInternal()
70       config->filter_strength = 10;  in WebPConfigInitInternal()
73       config->sns_strength = 0;  in WebPConfigInitInternal()
74       config->filter_strength = 0;   // disable filtering to retain sharpness  in WebPConfigInitInternal()
77       config->sns_strength = 0;  in WebPConfigInitInternal()
78       config->filter_strength = 0;   // disable filtering to retain sharpness  in WebPConfigInitInternal()
79       config->segments = 2;  in WebPConfigInitInternal()
85   return WebPValidateConfig(config);  in WebPConfigInitInternal()
88 int WebPValidateConfig(const WebPConfig* config) {  in WebPValidateConfig()  argument
89   if (config == NULL) return 0;  in WebPValidateConfig()
90   if (config->quality < 0 || config->quality > 100)  in WebPValidateConfig()
92   if (config->target_size < 0)  in WebPValidateConfig()
94   if (config->target_PSNR < 0)  in WebPValidateConfig()
96   if (config->method < 0 || config->method > 6)  in WebPValidateConfig()
98   if (config->segments < 1 || config->segments > 4)  in WebPValidateConfig()
100   if (config->sns_strength < 0 || config->sns_strength > 100)  in WebPValidateConfig()
102   if (config->filter_strength < 0 || config->filter_strength > 100)  in WebPValidateConfig()
104   if (config->filter_sharpness < 0 || config->filter_sharpness > 7)  in WebPValidateConfig()
106   if (config->filter_type < 0 || config->filter_type > 1)  in WebPValidateConfig()
108   if (config->autofilter < 0 || config->autofilter > 1)  in WebPValidateConfig()
110   if (config->pass < 1 || config->pass > 10)  in WebPValidateConfig()
112   if (config->show_compressed < 0 || config->show_compressed > 1)  in WebPValidateConfig()
114   if (config->preprocessing < 0 || config->preprocessing > 1)  in WebPValidateConfig()
116   if (config->partitions < 0 || config->partitions > 3)  in WebPValidateConfig()
118   if (config->partition_limit < 0 || config->partition_limit > 100)  in WebPValidateConfig()
120   if (config->alpha_compression < 0)  in WebPValidateConfig()
122   if (config->alpha_filtering < 0)  in WebPValidateConfig()
124   if (config->alpha_quality < 0 || config->alpha_quality > 100)  in WebPValidateConfig()
126   if (config->lossless < 0 || config->lossless > 1)  in WebPValidateConfig()
128   if (config->image_hint >= WEBP_HINT_LAST)  in WebPValidateConfig()
130   if (config->emulate_jpeg_size < 0 || config->emulate_jpeg_size > 1)  in WebPValidateConfig()
132   if (config->thread_level < 0 || config->thread_level > 1)  in WebPValidateConfig()
134   if (config->low_memory < 0 || config->low_memory > 1)  in WebPValidateConfig()