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jpeg_utils.h
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1 /*
2  * Copyright 2010 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http:///www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
18 
19 #ifndef PAGESPEED_KERNEL_IMAGE_JPEG_UTILS_H_
20 #define PAGESPEED_KERNEL_IMAGE_JPEG_UTILS_H_
21 
22 #include <cstddef>
24 
25 namespace net_instaweb {
26 class MessageHandler;
27 }
28 
29 namespace pagespeed {
30 
31 namespace image_compression {
32 
34 
36 class JpegUtils {
37  public:
44  static int GetImageQualityFromImage(const void* image_data,
45  size_t image_length,
46  MessageHandler* handler);
47 
48  private:
49  JpegUtils();
50 
51 };
52 
53 }
54 
55 }
56 
57 #endif
static int GetImageQualityFromImage(const void *image_data, size_t image_length, MessageHandler *handler)
Utility class that reads jpeg parameter from jpeg images.
Definition: jpeg_utils.h:36
Definition: message_handler.h:39