4 * Copyright (C) 1997-2011 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include "histogramconfig.h"
30 HistogramConfig::HistogramConfig()
38 void HistogramConfig::reset(int do_mode)
40 for(int i = 0; i < HISTOGRAM_MODES; i++)
58 void HistogramConfig::reset_points(int colors_only)
60 for(int i = 0; i < HISTOGRAM_MODES; i++)
62 if(i != HISTOGRAM_VALUE || !colors_only)
71 void HistogramConfig::boundaries()
73 for(int i = 0; i < HISTOGRAM_MODES; i++)
75 CLAMP(low_input[i], HIST_MIN_INPUT, HIST_MAX_INPUT);
76 CLAMP(high_input[i], HIST_MIN_INPUT, HIST_MAX_INPUT);
77 CLAMP(low_output[i], HIST_MIN_INPUT, HIST_MAX_INPUT);
78 CLAMP(high_output[i], HIST_MIN_INPUT, HIST_MAX_INPUT);
79 CLAMP(gamma[i], MIN_GAMMA, MAX_GAMMA);
80 low_output[i] = Units::quantize(low_output[i], PRECISION);
81 high_output[i] = Units::quantize(high_output[i], PRECISION);
83 CLAMP(threshold, 0, 1);
84 CLAMP(log_slider, 0, 1);
87 int HistogramConfig::equivalent(HistogramConfig &that)
89 // EQUIV isn't precise enough to detect changes in points
90 for(int i = 0; i < HISTOGRAM_MODES; i++) {
91 // if(!EQUIV(low_input[i], that.low_input[i]) ||
92 // !EQUIV(high_input[i], that.high_input[i]) ||
93 // !EQUIV(gamma[i], that.gamma[i]) ||
94 // !EQUIV(low_output[i], that.low_output[i]) ||
95 // !EQUIV(high_output[i], that.high_output[i])) return 0;
96 if( low_input[i] != that.low_input[i] ||
97 high_input[i] != that.high_input[i] ||
98 gamma[i] != that.gamma[i] ||
99 low_output[i] != that.low_output[i] ||
100 high_output[i] != that.high_output[i] ) return 0;
103 if( automatic != that.automatic ||
104 threshold != that.threshold ) return 0;
106 if( plot != that.plot ||
107 split != that.split ||
108 sum_frames != that.sum_frames ||
109 log_slider != that.log_slider ) return 0;
114 void HistogramConfig::copy_from(HistogramConfig &that)
116 for(int i = 0; i < HISTOGRAM_MODES; i++)
118 low_input[i] = that.low_input[i];
119 high_input[i] = that.high_input[i];
120 gamma[i] = that.gamma[i];
121 low_output[i] = that.low_output[i];
122 high_output[i] = that.high_output[i];
125 automatic = that.automatic;
126 threshold = that.threshold;
129 sum_frames = that.sum_frames;
130 log_slider = that.log_slider;
133 void HistogramConfig::interpolate(HistogramConfig &prev, HistogramConfig &next,
134 int64_t prev_frame, int64_t next_frame, int64_t current_frame)
136 double next_scale = (double)(current_frame - prev_frame) / (next_frame - prev_frame);
137 double prev_scale = 1.0 - next_scale;
139 for( int i=0; i<HISTOGRAM_MODES; ++i ) {
140 low_input[i] = prev.low_input[i] * prev_scale + next.low_input[i] * next_scale;
141 high_input[i] = prev.high_input[i] * prev_scale + next.high_input[i] * next_scale;
142 gamma[i] = prev.gamma[i] * prev_scale + next.gamma[i] * next_scale;
143 low_output[i] = prev.low_output[i] * prev_scale + next.low_output[i] * next_scale;
144 high_output[i] = prev.high_output[i] * prev_scale + next.high_output[i] * next_scale;
147 threshold = prev.threshold * prev_scale + next.threshold * next_scale;
148 automatic = prev.automatic;
151 sum_frames = prev.sum_frames;
152 log_slider = prev.log_slider;
156 void HistogramConfig::dump()
158 for( int j=0; j<HISTOGRAM_MODES; ++j ) {
159 printf("HistogramConfig::dump mode=%d plot=%d split=%d sum_frames=%d\n",
160 j, plot, split, sum_frames);