15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright 2011 Google Inc. All Rights Reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 3eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// Use of this source code is governed by a BSD-style license 4eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// that can be found in the COPYING file in the root of the source 5eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// tree. An additional intellectual property rights grant can be found 6eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// in the file PATENTS. All contributing project authors may 7eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// 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) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "../webp/encode.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// WebPConfig 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int WebPConfigInitInternal(WebPConfig* config, 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WebPPreset preset, float quality, int version) { 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (WEBP_ABI_IS_INCOMPATIBLE(version, WEBP_ENCODER_ABI_VERSION)) { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; // caller/system version mismatch! 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config == NULL) return 0; 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->quality = quality; 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->target_size = 0; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->target_PSNR = 0.; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->method = 4; 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 50; 325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) config->filter_strength = 60; // mid-filtering 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_sharpness = 0; 342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) config->filter_type = 1; // default: strong (so U/V is filtered too) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->partitions = 0; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->segments = 4; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->pass = 1; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->show_compressed = 0; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->preprocessing = 0; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->autofilter = 0; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->partition_limit = 0; 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->alpha_compression = 1; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->alpha_filtering = 1; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->alpha_quality = 100; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->lossless = 0; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->image_hint = WEBP_HINT_DEFAULT; 472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) config->emulate_jpeg_size = 0; 482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) config->thread_level = 0; 492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) config->low_memory = 0; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(skal): tune. 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (preset) { 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_PICTURE: 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 80; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_sharpness = 4; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_strength = 35; 575d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) config->preprocessing &= ~2; // no dithering 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_PHOTO: 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 80; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_sharpness = 3; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_strength = 30; 635d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) config->preprocessing |= 2; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_DRAWING: 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 25; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_sharpness = 6; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_strength = 10; 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_ICON: 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 0; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_strength = 0; // disable filtering to retain sharpness 735d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) config->preprocessing &= ~2; // no dithering 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case WEBP_PRESET_TEXT: 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->sns_strength = 0; 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) config->filter_strength = 0; // disable filtering to retain sharpness 785d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) config->preprocessing &= ~2; // no dithering 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) 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (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; 1145d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (config->preprocessing < 0 || config->preprocessing > 3) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->partitions < 0 || config->partitions > 3) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->partition_limit < 0 || config->partition_limit > 100) 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->alpha_compression < 0) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (config->alpha_filtering < 0) 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (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; 1302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (config->emulate_jpeg_size < 0 || config->emulate_jpeg_size > 1) 1312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return 0; 1322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (config->thread_level < 0 || config->thread_level > 1) 1332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return 0; 1342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (config->low_memory < 0 || config->low_memory > 1) 1352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return 0; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 1; 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 141c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch#if WEBP_ENCODER_ABI_VERSION > 0x0202 142c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch#define MAX_LEVEL 9 143c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 144c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch// Mapping between -z level and -m / -q parameter settings. 145c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdochstatic const struct { 146c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch uint8_t method_; 147c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch uint8_t quality_; 148c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch} kLosslessPresets[MAX_LEVEL + 1] = { 149c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch { 0, 0 }, { 1, 20 }, { 2, 25 }, { 3, 30 }, { 3, 50 }, 150c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch { 4, 50 }, { 4, 75 }, { 4, 90 }, { 5, 90 }, { 6, 100 } 151c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch}; 152c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 153c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdochint WebPConfigLosslessPreset(WebPConfig* config, int level) { 154c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch if (config == NULL || level < 0 || level > MAX_LEVEL) return 0; 155c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch config->lossless = 1; 156c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch config->method = kLosslessPresets[level].method_; 157c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch config->quality = kLosslessPresets[level].quality_; 158c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch return 1; 159c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch} 160c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch#endif 161c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 162c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch//------------------------------------------------------------------------------ 163