15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright 2011 Google Inc. All Rights Reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// that can be found in the COPYING file in the root of the source 52a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// tree. An additional intellectual property rights grant can be found 62a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// in the file PATENTS. All contributing project authors may 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// be found in the AUTHORS file in the root of the source tree. 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ----------------------------------------------------------------------------- 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Coding tools configuration 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Author: Skal (pascal.massimino@gmail.com) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "../webp/encode.h" 152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(__cplusplus) || defined(c_plusplus) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern "C" { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// WebPConfig 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int WebPConfigInitInternal(WebPConfig* config, 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WebPPreset preset, float quality, int version) { 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (WEBP_ABI_IS_INCOMPATIBLE(version, WEBP_ENCODER_ABI_VERSION)) { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; // caller/system version mismatch! 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config == NULL) return 0; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->quality = quality; 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->target_size = 0; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->target_PSNR = 0.; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->method = 4; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 50; 362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) config->filter_strength = 60; // rather high filtering, helps w/ gradients. 372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) config->filter_sharpness = 0; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_type = 1; // default: strong (so U/V is filtered too) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->partitions = 0; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->segments = 4; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->pass = 1; 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->show_compressed = 0; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->preprocessing = 0; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->autofilter = 0; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->partition_limit = 0; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->alpha_compression = 1; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->alpha_filtering = 1; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->alpha_quality = 100; 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->lossless = 0; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->image_hint = WEBP_HINT_DEFAULT; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->emulate_jpeg_size = 0; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->thread_level = 0; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->low_memory = 0; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(skal): tune. 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (preset) { 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_PICTURE: 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 80; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_sharpness = 4; 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_strength = 35; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_PHOTO: 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 80; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_sharpness = 3; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_strength = 30; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_DRAWING: 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 25; 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_sharpness = 6; 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_strength = 10; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_ICON: 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 0; 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_strength = 0; // disable filtering to retain sharpness 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_TEXT: 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 0; 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_strength = 0; // disable filtering to retain sharpness 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->segments = 2; 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_DEFAULT: 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return WebPValidateConfig(config); 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int WebPValidateConfig(const WebPConfig* config) { 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config == NULL) return 0; 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->quality < 0 || config->quality > 100) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->target_size < 0) 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->target_PSNR < 0) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->method < 0 || config->method > 6) 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->segments < 1 || config->segments > 4) 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->sns_strength < 0 || config->sns_strength > 100) 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->filter_strength < 0 || config->filter_strength > 100) 1032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return 0; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->filter_sharpness < 0 || config->filter_sharpness > 7) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->filter_type < 0 || config->filter_type > 1) 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->autofilter < 0 || config->autofilter > 1) 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->pass < 1 || config->pass > 10) 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->show_compressed < 0 || config->show_compressed > 1) 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->preprocessing < 0 || config->preprocessing > 1) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->partitions < 0 || config->partitions > 3) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (config->partition_limit < 0 || config->partition_limit > 100) 1192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return 0; 1202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (config->alpha_compression < 0) 1212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return 0; 1222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (config->alpha_filtering < 0) 1232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return 0; 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->alpha_quality < 0 || config->alpha_quality > 100) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->lossless < 0 || config->lossless > 1) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->image_hint >= WEBP_HINT_LAST) 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->emulate_jpeg_size < 0 || config->emulate_jpeg_size > 1) 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->thread_level < 0 || config->thread_level > 1) 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->low_memory < 0 || config->low_memory > 1) 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 1; 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(__cplusplus) || defined(c_plusplus) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // extern "C" 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)