Mercurial > hg > svcore

comparison base/RangeMapper.cpp @ 241:2b40f83e7627

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
* Make audio file reader factory try for a reader based on the file's extension, before trying all readers * Remove some debug output
author Chris Cannam
date Thu, 01 Mar 2007 12:15:08 +0000
parents 91fdc752e540
children db8fcd280234 6f6ab834449d
comparison
equal deleted inserted replaced
240:8133ae938704 241:2b40f83e7627
39 int position = m_minpos + 39 int position = m_minpos +
40 lrintf(((value - m_minval) / (m_maxval - m_minval)) 40 lrintf(((value - m_minval) / (m_maxval - m_minval))
41 * (m_maxpos - m_minpos)); 41 * (m_maxpos - m_minpos));
42 if (position < m_minpos) position = m_minpos; 42 if (position < m_minpos) position = m_minpos;
43 if (position > m_maxpos) position = m_maxpos; 43 if (position > m_maxpos) position = m_maxpos;
44 std::cerr << "LinearRangeMapper::getPositionForValue: " << value << " -> " 44 // std::cerr << "LinearRangeMapper::getPositionForValue: " << value << " -> "
45 << position << " (minpos " << m_minpos << ", maxpos " << m_maxpos << ", minval " << m_minval << ", maxval " << m_maxval << ")" << std::endl; 45 // << position << " (minpos " << m_minpos << ", maxpos " << m_maxpos << ", minval " << m_minval << ", maxval " << m_maxval << ")" << std::endl;
46 return position; 46 return position;
47 } 47 }
48 48
49 float 49 float
50 LinearRangeMapper::getValueForPosition(int position) const 50 LinearRangeMapper::getValueForPosition(int position) const
52 float value = m_minval + 52 float value = m_minval +
53 ((float(position - m_minpos) / float(m_maxpos - m_minpos)) 53 ((float(position - m_minpos) / float(m_maxpos - m_minpos))
54 * (m_maxval - m_minval)); 54 * (m_maxval - m_minval));
55 if (value < m_minval) value = m_minval; 55 if (value < m_minval) value = m_minval;
56 if (value > m_maxval) value = m_maxval; 56 if (value > m_maxval) value = m_maxval;
57 std::cerr << "LinearRangeMapper::getValueForPosition: " << position << " -> " 57 // std::cerr << "LinearRangeMapper::getValueForPosition: " << position << " -> "
58 << value << " (minpos " << m_minpos << ", maxpos " << m_maxpos << ", minval " << m_minval << ", maxval " << m_maxval << ")" << std::endl; 58 // << value << " (minpos " << m_minpos << ", maxpos " << m_maxpos << ", minval " << m_minval << ", maxval " << m_maxval << ")" << std::endl;
59 return value; 59 return value;
60 } 60 }
61 61
62 LogRangeMapper::LogRangeMapper(int minpos, int maxpos, 62 LogRangeMapper::LogRangeMapper(int minpos, int maxpos,
63 float ratio, float minlog, 63 float ratio, float minlog,
79 float mapped = m_ratio * log10(value); 79 float mapped = m_ratio * log10(value);
80 int position = lrintf(((mapped - m_minlog) / (m_maxlog - m_minlog)) 80 int position = lrintf(((mapped - m_minlog) / (m_maxlog - m_minlog))
81 * (m_maxpos - m_minpos)); 81 * (m_maxpos - m_minpos));
82 if (position < m_minpos) position = m_minpos; 82 if (position < m_minpos) position = m_minpos;
83 if (position > m_maxpos) position = m_maxpos; 83 if (position > m_maxpos) position = m_maxpos;
84 std::cerr << "LogRangeMapper::getPositionForValue: " << value << " -> " 84 // std::cerr << "LogRangeMapper::getPositionForValue: " << value << " -> "
85 << position << " (minpos " << m_minpos << ", maxpos " << m_maxpos << ", ratio " << m_ratio << ", minlog " << m_minlog << ")" << std::endl; 85 // << position << " (minpos " << m_minpos << ", maxpos " << m_maxpos << ", ratio " << m_ratio << ", minlog " << m_minlog << ")" << std::endl;
86 return position; 86 return position;
87 } 87 }
88 88
89 float 89 float
90 LogRangeMapper::getValueForPosition(int position) const 90 LogRangeMapper::getValueForPosition(int position) const
91 { 91 {
92 float value = powf(10, (position - m_minpos) / m_ratio + m_minlog); 92 float value = powf(10, (position - m_minpos) / m_ratio + m_minlog);
93 std::cerr << "LogRangeMapper::getValueForPosition: " << position << " -> " 93 // std::cerr << "LogRangeMapper::getValueForPosition: " << position << " -> "
94 << value << " (minpos " << m_minpos << ", maxpos " << m_maxpos << ", ratio " << m_ratio << ", minlog " << m_minlog << ")" << std::endl; 94 // << value << " (minpos " << m_minpos << ", maxpos " << m_maxpos << ", ratio " << m_ratio << ", minlog " << m_minlog << ")" << std::endl;
95 return value; 95 return value;
96 } 96 }
97 97