Page Speed Optimization Libraries  1.4.26.1
net/instaweb/rewriter/public/webp_optimizer.h
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00001 /*
00002  * Copyright 2011 Google Inc.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *      http:///www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00018 
00019 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_WEBP_OPTIMIZER_H_
00020 #define NET_INSTAWEB_REWRITER_PUBLIC_WEBP_OPTIMIZER_H_
00021 
00022 #include "net/instaweb/util/public/string.h"
00023 
00024 namespace net_instaweb {
00025 
00027 typedef bool (*WebpProgressHook)(int percent, void* user_data);
00028 
00031 const int kNoQualityGiven = -1;
00032 
00037 bool OptimizeWebp(const GoogleString& original_jpeg, int configured_quality,
00038                   WebpProgressHook progress_hook, void* progress_hook_data,
00039                   GoogleString* compressed_webp);
00040 
00044 bool ReduceWebpImageQuality(const GoogleString& original_webp,
00045                             int quality, GoogleString* compressed_webp);
00046 
00047 }  
00048 
00049 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_WEBP_OPTIMIZER_H_
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