Fawkes API  Fawkes Development Version
jpeg_compressor_mmal.h
1 
2 /***************************************************************************
3  * jpeg_compressor_mmal.h - JPEG image compressor interface (using MMAL)
4  *
5  * Created: Wed Feb 05 15:12:28 2014
6  * Copyright 2005-2014 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_MMAL_H_
25 #define __FIREVISION_UTILS_COMPRESSION_JPEG_COMPRESSOR_MMAL_H_
26 
27 #ifndef __FIREVISION_UTILS_COMPRESSION_JPEG_COMPRESSOR_H_
28 # error Do not include jpeg_compressor_mmal.h directly, use jpeg_compressor.h
29 #endif
30 
31 #ifndef HAVE_MMAL
32 # error Cannot use MMAL JPEG Encoder without MMAL
33 #endif
34 
35 #include <fvutils/compression/imagecompressor.h>
36 
37 namespace firevision {
38 #if 0 /* just to make Emacs auto-indent happy */
39 }
40 #endif
41 
43  public:
44 
45  JpegImageCompressorMMAL(unsigned int quality = 80);
46  virtual ~JpegImageCompressorMMAL();
47 
48  virtual void set_image_dimensions(unsigned int width, unsigned int height);
49  virtual void set_image_buffer(colorspace_t cspace, unsigned char *buffer);
50  virtual void set_destination_buffer(unsigned char *buf, unsigned int buf_size);
51  virtual size_t compressed_size();
52  virtual void set_filename(const char *filename);
55  virtual void compress();
56  virtual size_t recommended_compressed_buffer_size();
57 
58  virtual bool supports_vflip();
59  virtual void set_vflip(bool enable);
60 
61  class State;
62 
63  private:
64  void create_encoder_component();
65  void destroy_encoder_component();
66 
67  private:
68  unsigned char *buffer_;
69 
70  unsigned int quality_;
71 
72  unsigned int width_;
73  unsigned int height_;
74 
75  const char *filename_;
76 
77  State *state_;
78  bool vflip_;
79 };
80 
81 } // end namespace firevision
82 
83 #endif
virtual void set_image_buffer(colorspace_t cspace, unsigned char *buffer)
Set image buffer to compress.
virtual void set_destination_buffer(unsigned char *buf, unsigned int buf_size)
Set destination buffer (if compressing to memory).
CompressionDestination
Where to put the compressed image.
virtual void compress()
Compress image.
virtual void set_image_dimensions(unsigned int width, unsigned int height)
Set dimensions of image to compress.
virtual size_t recommended_compressed_buffer_size()
Get the recommended size for the compressed buffer.
virtual bool supports_vflip()
Check if image compressor can do vflip during compress.
virtual size_t compressed_size()
Get compressed size.
virtual bool supports_compression_destination(ImageCompressor::CompressionDestination cd)
Check if compressor supports desired compression destination.
Image compressor interface.
virtual void set_filename(const char *filename)
Set file name.
JpegImageCompressorMMAL(unsigned int quality=80)
Constructor.
virtual void set_vflip(bool enable)
Enable or disable vflipping.
virtual void set_compression_destination(ImageCompressor::CompressionDestination cd)
Set compression destination.