Fawkes API  Fawkes Development Version
jpeg_compressor_libjpeg.h
1 
2 /***************************************************************************
3  * jpeg_compressor.h - JPEG image compressor interface
4  *
5  * Created: Fri Aug 11 18:53:19 2006 (on train to Cologne)
6  * Copyright 2005-2007 Tim Niemueller [www.niemueller.de]
7  *
8  ****************************************************************************/
9 
10 /* This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version. A runtime exception applies to
14  * this software (see LICENSE.GPL_WRE file mentioned below for details).
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19  * GNU Library General Public License for more details.
20  *
21  * Read the full text in the LICENSE.GPL_WRE file in the doc directory.
22  */
23 
24 #ifndef __FIREVISION_UTILS_COMPRESSION_JPEG_COMPRESSOR_LIBJPEG_H_
25 #define __FIREVISION_UTILS_COMPRESSION_JPEG_COMPRESSOR_LIBJPEG_H_
26 
27 #ifndef __FIREVISION_UTILS_COMPRESSION_JPEG_COMPRESSOR_H_
28 # error Do not include jpeg_compressor_libjpeg.h directly, use jpeg_compressor.h
29 #endif
30 
31 #include <fvutils/compression/imagecompressor.h>
32 
33 namespace firevision {
34 #if 0 /* just to make Emacs auto-indent happy */
35 }
36 #endif
37 
39  public:
40 
41  JpegImageCompressorLibJpeg(unsigned int quality = 80,
44 
45  virtual void set_image_dimensions(unsigned int width, unsigned int height);
46  virtual void set_image_buffer(colorspace_t cspace, unsigned char *buffer);
47  virtual void set_destination_buffer(unsigned char *buf, unsigned int buf_size);
48  virtual size_t compressed_size();
49  virtual void set_filename(const char *filename);
52  virtual void compress();
53  virtual size_t recommended_compressed_buffer_size();
54  virtual bool supports_vflip();
55  virtual void set_vflip(bool enable);
56 
57  private:
58  unsigned char *jpeg_buffer;
59  unsigned int jpeg_buffer_size;
60  unsigned char *buffer;
61 
62  unsigned int quality;
63  bool vflip;
64 
65  unsigned int width;
66  unsigned int height;
67 
68  unsigned int jpeg_bytes;
69 
70  const char *filename;
71 
73  CompressionDestination compdest;
74 };
75 
76 } // end namespace firevision
77 
78 #endif
virtual bool supports_compression_destination(ImageCompressor::CompressionDestination cd)
Check if compressor supports desired compression destination.
virtual void set_image_buffer(colorspace_t cspace, unsigned char *buffer)
Set image buffer to compress.
virtual bool supports_vflip()
Check if image compressor can do vflip during compress.
virtual void set_compression_destination(ImageCompressor::CompressionDestination cd)
Set compression destination.
virtual void set_image_dimensions(unsigned int width, unsigned int height)
Set dimensions of image to compress.
CompressionDestination
Where to put the compressed image.
JpegImageCompressorLibJpeg(unsigned int quality=80, JpegImageCompressor::JpegColorspace jcs=JpegImageCompressor::JPEG_CS_RGB)
Constructor.
virtual size_t compressed_size()
Get compressed size.
virtual void set_vflip(bool enable)
Enable or disable vflipping.
virtual void set_destination_buffer(unsigned char *buf, unsigned int buf_size)
Set destination buffer (if compressing to memory).
Image compressor interface.
virtual void set_filename(const char *filename)
Set file name.
virtual size_t recommended_compressed_buffer_size()
Get the recommended size for the compressed buffer.