cinelerra-5.1/plugins/removegaps/removegaps.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 1997-2012 Adam Williams <broadcast at earthling dot net>
   5  *
   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.
  10  *
  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.
  15  *
  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
  19  *
  20  */
  21
  22 #include "bcdisplayinfo.h"
  23 #include "bchash.h"
  24 #include "clip.h"
  25 #include "filexml.h"
  26 #include "language.h"
  27 #include "removegaps.h"
  28 #include "samples.h"
  29 #include "theme.h"
  30 #include "transportque.inc"
  31
  32 #include <string.h>
  33
  34
  35 // Maximum seconds to skip, if end of file
  36 #define MAX_SKIPPED_DURATION 5.0
  37 #define MIN_GAP_DURATION 0.01
  38 #define MAX_GAP_DURATION 1.0
  39 #define MIN_GAP_THRESHOLD INFINITYGAIN
  40 #define MAX_GAP_THRESHOLD 0.0
  41
  42 REGISTER_PLUGIN(RemoveGaps);
  43
  44
  45
  46 RemoveGapsConfig::RemoveGapsConfig()
  47 {
  48         threshold = -20.0;
  49         duration = 0.1;
  50 }
  51
  52
  53 int RemoveGapsConfig::equivalent(RemoveGapsConfig &src)
  54 {
  55         return EQUIV(threshold, src.threshold) &&
  56                 EQUIV(duration, src.duration);
  57 }
  58
  59 void RemoveGapsConfig::copy_from(RemoveGapsConfig &src)
  60 {
  61         this->threshold = src.threshold;
  62         this->duration = src.duration;
  63 }
  64
  65 void RemoveGapsConfig::interpolate(RemoveGapsConfig &prev,
  66         RemoveGapsConfig &next,
  67         int64_t prev_frame,
  68         int64_t next_frame,
  69         int64_t current_frame)
  70 {
  71         this->threshold = prev.threshold;
  72         this->duration = prev.duration;
  73         boundaries();
  74 }
  75
  76 void RemoveGapsConfig::boundaries()
  77 {
  78         CLAMP(threshold, MIN_GAP_THRESHOLD, MAX_GAP_THRESHOLD);
  79         CLAMP(duration, MIN_GAP_DURATION, MAX_GAP_DURATION);
  80 }
  81
  82
  83
  84
  85 RemoveGapsWindow::RemoveGapsWindow(RemoveGaps *plugin)
  86  : PluginClientWindow(plugin,
  87         xS(320),
  88         yS(160),
  89         xS(320),
  90         yS(160),
  91         0)
  92 {
  93         this->plugin = plugin;
  94 }
  95
  96 RemoveGapsWindow::~RemoveGapsWindow()
  97 {
  98 }
  99
 100 void RemoveGapsWindow::create_objects()
 101 {
 102         int x = xS(10), y = yS(10);
 103         BC_Title *title;
 104
 105         add_subwindow(title = new BC_Title(x, y, _("Threshold of gap (DB):")));
 106
 107         add_subwindow(threshold = new RemoveGapsThreshold(this,
 108                 plugin,
 109                 x + title->get_w() + plugin->get_theme()->widget_border,
 110                 y));
 111         y += threshold->get_h() + plugin->get_theme()->widget_border;
 112         add_subwindow(title = new BC_Title(x, y, _("Max duration of gap (Seconds):")));
 113         add_subwindow(duration = new RemoveGapsDuration(this,
 114                 plugin,
 115                 x + title->get_w() + plugin->get_theme()->widget_border,
 116                 y));
 117         show_window(1);
 118 }
 119
 120
 121
 122
 123
 124
 125 RemoveGapsThreshold::RemoveGapsThreshold(RemoveGapsWindow *window,
 126         RemoveGaps *plugin,
 127         int x,
 128         int y)
 129  : BC_FPot(x,
 130         y,
 131         plugin->config.threshold,
 132         MIN_GAP_THRESHOLD,
 133         MAX_GAP_THRESHOLD)
 134 {
 135         this->plugin = plugin;
 136         set_precision(0.1);
 137 }
 138
 139 int RemoveGapsThreshold::handle_event()
 140 {
 141         plugin->config.threshold = get_value();
 142         plugin->send_configure_change();
 143         return 1;
 144 }
 145
 146
 147
 148
 149
 150
 151
 152
 153 RemoveGapsDuration::RemoveGapsDuration(RemoveGapsWindow *window,
 154         RemoveGaps *plugin,
 155         int x,
 156         int y)
 157  : BC_FPot(x,
 158         y,
 159         plugin->config.duration,
 160         MIN_GAP_DURATION,
 161         MAX_GAP_DURATION)
 162 {
 163         this->plugin = plugin;
 164         set_precision(0.01);
 165 }
 166
 167 int RemoveGapsDuration::handle_event()
 168 {
 169         plugin->config.duration = get_value();
 170         plugin->send_configure_change();
 171         return 1;
 172 }
 173
 174
 175
 176
 177
 178
 179
 180 RemoveGaps::RemoveGaps(PluginServer *server)
 181  : PluginAClient(server)
 182 {
 183         need_reconfigure = 1;
 184         source_start = 0;
 185         dest_start = 0;
 186         gap_length = 0;
 187         temp_position = 0;
 188         temp = 0;
 189 }
 190
 191
 192 RemoveGaps::~RemoveGaps()
 193 {
 194         delete temp;
 195 }
 196
 197 const char* RemoveGaps::plugin_title() { return N_("Remove Gaps"); }
 198 int RemoveGaps::is_realtime() { return 1; }
 199
 200 NEW_WINDOW_MACRO(RemoveGaps, RemoveGapsWindow)
 201
 202 LOAD_CONFIGURATION_MACRO(RemoveGaps, RemoveGapsConfig)
 203
 204
 205 int RemoveGaps::process_buffer(int64_t size,
 206         Samples *buffer,
 207         int64_t start_position,
 208         int sample_rate)
 209 {
 210         need_reconfigure |= load_configuration();
 211
 212
 213         if(need_reconfigure || start_position != dest_start)
 214         {
 215                 source_start = start_position;
 216                 temp_position = 0;
 217                 need_reconfigure = 0;
 218         }
 219
 220         dest_start = start_position;
 221         double *buffer_samples = buffer->get_data();
 222         double *temp_samples = !temp ? 0 : temp->get_data();
 223
 224         double threshold = DB::fromdb(config.threshold);
 225         int64_t duration = (int64_t)(config.duration * sample_rate);
 226         for(int i = 0; i < size; )
 227         {
 228                 if(!temp || temp_position >= temp->get_allocated())
 229                 {
 230 // Expand temp buffer if smaller than buffer read
 231                         if(!temp)
 232                         {
 233                                 temp = new Samples(get_buffer_size());
 234                                 temp_samples = temp->get_data();
 235                         }
 236                         temp_position = 0;
 237
 238 // Fill new temp buffer
 239                         read_samples(temp,
 240                                 0,
 241                                 sample_rate,
 242                                 source_start,
 243                                 get_buffer_size());
 244                         if(get_direction() == PLAY_FORWARD)
 245                                 source_start += size;
 246                         else
 247                                 source_start -= size;
 248                 }
 249
 250                 double sample = temp_samples[temp_position];
 251                 if(fabs(sample) < threshold)
 252                 {
 253                         gap_length++;
 254                 }
 255                 else
 256                 {
 257                         gap_length = 0;
 258                 }
 259
 260 // Only copy sample if gap below duration or no more samples to read
 261                 if(gap_length < duration || gap_length > MAX_SKIPPED_DURATION * sample_rate)
 262                 {
 263                         buffer_samples[i++] = sample;
 264                 }
 265
 266                 temp_position++;
 267         }
 268
 269
 270         if(get_direction() == PLAY_FORWARD)
 271                 dest_start += size;
 272         else
 273                 dest_start -= size;
 274
 275         return 0;
 276 }
 277
 278 void RemoveGaps::render_stop()
 279 {
 280         need_reconfigure = 1;
 281 }
 282
 283
 284
 285
 286 void RemoveGaps::save_data(KeyFrame *keyframe)
 287 {
 288         FileXML output;
 289
 290 // cause data to be stored directly in text
 291         output.set_shared_output(keyframe->xbuf);
 292         output.tag.set_title("REMOVEGAPS");
 293         output.tag.set_property("DURATION", config.duration);
 294         output.tag.set_property("THRESHOLD", config.threshold);
 295         output.append_tag();
 296         output.tag.set_title("/REMOVEGAPS");
 297         output.append_tag();
 298         output.append_newline();
 299         output.terminate_string();
 300 }
 301
 302 void RemoveGaps::read_data(KeyFrame *keyframe)
 303 {
 304         FileXML input;
 305
 306         input.set_shared_input(keyframe->xbuf);
 307
 308         while(!input.read_tag())
 309         {
 310                 if(input.tag.title_is("REMOVEGAPS"))
 311                 {
 312                         config.duration = input.tag.get_property("DURATION", config.duration);
 313                         config.threshold = input.tag.get_property("THRESHOLD", config.threshold);
 314                 }
 315         }
 316
 317 }
 318
 319 void RemoveGaps::update_gui()
 320 {
 321         if(thread)
 322         {
 323                 if(load_configuration())
 324                 {
 325                         thread->window->lock_window("RemoveGaps::update_gui");
 326                         ((RemoveGapsWindow*)thread->window)->duration->update((float)config.duration);
 327                         ((RemoveGapsWindow*)thread->window)->threshold->update((float)config.threshold);
 328                         thread->window->unlock_window();
 329                 }
 330         }
 331 }
 332
 333
 334
 335
 336