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
37namespace firevision {
38
40{
41public:
42 JpegImageCompressorMMAL(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();
54
55 virtual bool supports_vflip();
56 virtual void set_vflip(bool enable);
57
58 class State;
59
60private:
61 void create_encoder_component();
62 void destroy_encoder_component();
63
64private:
65 unsigned char *buffer_;
66
67 unsigned int quality_;
68
69 unsigned int width_;
70 unsigned int height_;
71
72 const char *filename_;
73
74 State *state_;
75 bool vflip_;
76};
77
78} // end namespace firevision
79
80#endif
Image compressor interface.
CompressionDestination
Where to put the compressed image.
virtual bool supports_vflip()
Check if image compressor can do vflip during compress.
virtual size_t recommended_compressed_buffer_size()
Get the recommended size for the compressed buffer.
virtual size_t compressed_size()
Get compressed size.
virtual void compress()
Compress image.
virtual void set_destination_buffer(unsigned char *buf, unsigned int buf_size)
Set destination buffer (if compressing to memory).
JpegImageCompressorMMAL(unsigned int quality=80)
Constructor.
virtual void set_image_buffer(colorspace_t cspace, unsigned char *buffer)
Set image buffer to compress.
virtual void set_compression_destination(ImageCompressor::CompressionDestination cd)
Set compression destination.
virtual bool supports_compression_destination(ImageCompressor::CompressionDestination cd)
Check if compressor supports desired compression destination.
virtual void set_vflip(bool enable)
Enable or disable vflipping.
virtual void set_filename(const char *filename)
Set file name.
virtual void set_image_dimensions(unsigned int width, unsigned int height)
Set dimensions of image to compress.