cinelerra-5.1/plugins/delayaudio/delayaudio.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008 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 "clip.h"
  24 #include "bchash.h"
  25 #include "delayaudio.h"
  26 #include "filexml.h"
  27 #include "language.h"
  28 #include "samples.h"
  29 #include "vframe.h"
  30
  31 #include <string.h>
  32
  33
  34
  35 PluginClient* new_plugin(PluginServer *server)
  36 {
  37         return new DelayAudio(server);
  38 }
  39
  40
  41 DelayAudio::DelayAudio(PluginServer *server)
  42  : PluginAClient(server)
  43 {
  44         reset();
  45 }
  46
  47 DelayAudio::~DelayAudio()
  48 {
  49
  50
  51         if(buffer) delete buffer;
  52 }
  53
  54
  55
  56 NEW_WINDOW_MACRO(DelayAudio, DelayAudioWindow)
  57
  58 const char* DelayAudio::plugin_title() { return N_("Delay audio"); }
  59 int DelayAudio::is_realtime() { return 1; }
  60
  61
  62 void DelayAudio::reset()
  63 {
  64         need_reconfigure = 1;
  65         buffer = 0;
  66 }
  67
  68 int DelayAudio::load_configuration()
  69 {
  70         KeyFrame *prev_keyframe;
  71         prev_keyframe = get_prev_keyframe(get_source_position());
  72
  73         DelayAudioConfig old_config;
  74         old_config.copy_from(config);
  75         read_data(prev_keyframe);
  76
  77         if(!old_config.equivalent(config))
  78         {
  79 // Reconfigure
  80                 need_reconfigure = 1;
  81                 return 1;
  82         }
  83         return 0;
  84 }
  85
  86
  87 void DelayAudio::read_data(KeyFrame *keyframe)
  88 {
  89         FileXML input;
  90         input.set_shared_input(keyframe->xbuf);
  91
  92         int result = 0;
  93         while(!result)
  94         {
  95                 result = input.read_tag();
  96
  97                 if(!result)
  98                 {
  99                         if(input.tag.title_is("DELAYAUDIO"))
 100                         {
 101                                 config.length = input.tag.get_property("LENGTH", (double)config.length);
 102                         }
 103                 }
 104         }
 105 }
 106
 107
 108 void DelayAudio::save_data(KeyFrame *keyframe)
 109 {
 110         FileXML output;
 111         output.set_shared_output(keyframe->xbuf);
 112
 113         output.tag.set_title("DELAYAUDIO");
 114         output.tag.set_property("LENGTH", (double)config.length);
 115         output.append_tag();
 116         output.tag.set_title("/DELAYAUDIO");
 117         output.append_tag();
 118         output.append_newline();
 119         output.terminate_string();
 120 }
 121
 122 void DelayAudio::reconfigure()
 123 {
 124         input_start = (int64_t)(config.length * PluginAClient::project_sample_rate + 0.5);
 125         int64_t new_allocation = input_start + PluginClient::in_buffer_size;
 126         Samples *new_buffer = new Samples(new_allocation);
 127         bzero(new_buffer->get_data(), sizeof(double) * new_allocation);
 128
 129 // printf("DelayAudio::reconfigure %f %d %d %d\n",
 130 // config.length,
 131 // PluginAClient::project_sample_rate,
 132 // PluginClient::in_buffer_size,
 133 // new_allocation);
 134 //
 135
 136
 137         if(buffer)
 138         {
 139                 int size = MIN(new_allocation, allocation);
 140
 141                 memcpy(new_buffer->get_data(),
 142                         buffer->get_data(),
 143                         (size - PluginClient::in_buffer_size) * sizeof(double));
 144                 delete buffer;
 145         }
 146
 147         allocation = new_allocation;
 148         buffer = new_buffer;
 149         allocation = new_allocation;
 150         need_reconfigure = 0;
 151 }
 152
 153 int DelayAudio::process_realtime(int64_t size, Samples *input_ptr, Samples *output_ptr)
 154 {
 155
 156         load_configuration();
 157         if(need_reconfigure) reconfigure();
 158
 159 // printf("DelayAudio::process_realtime %d %d\n",
 160 // input_start, size);
 161
 162
 163
 164         double *buffer_samples = buffer->get_data();
 165         double *output_samples = output_ptr->get_data();
 166         double *input_samples = input_ptr->get_data();
 167         memcpy(buffer_samples + input_start, input_samples, size * sizeof(double));
 168         memcpy(output_samples, buffer_samples, size * sizeof(double));
 169
 170         for(int i = size, j = 0; i < allocation; i++, j++)
 171         {
 172                 buffer_samples[j] = buffer_samples[i];
 173         }
 174
 175         return 0;
 176 }
 177
 178
 179
 180
 181 void DelayAudio::update_gui()
 182 {
 183         if(thread)
 184         {
 185                 load_configuration();
 186                 ((DelayAudioWindow*)thread->window)->lock_window();
 187                 ((DelayAudioWindow*)thread->window)->update_gui();
 188                 ((DelayAudioWindow*)thread->window)->unlock_window();
 189         }
 190 }
 191
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 202
 203
 204
 205
 206
 207 DelayAudioWindow::DelayAudioWindow(DelayAudio *plugin)
 208  : PluginClientWindow(plugin, 285, 80, 285, 80, 0)
 209 {
 210         this->plugin = plugin;
 211 }
 212
 213 DelayAudioWindow::~DelayAudioWindow()
 214 {
 215 }
 216
 217 void DelayAudioWindow::create_objects()
 218 {
 219         add_subwindow(new BC_Title(10, 10, _("Delay seconds:")));
 220         length = new DelayAudioTextBox(
 221                 plugin,
 222                 this,
 223                 10,
 224                 40);
 225         length->create_objects();
 226         update_gui();
 227         show_window();
 228 }
 229
 230 void DelayAudioWindow::update_gui()
 231 {
 232         char string[BCTEXTLEN];
 233         sprintf(string, "%.04f", plugin->config.length);
 234         length->update(string);
 235 }
 236
 237
 238
 239
 240
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 245
 246
 247
 248 DelayAudioTextBox::DelayAudioTextBox(
 249         DelayAudio *plugin,
 250         DelayAudioWindow *window,
 251         int x,
 252         int y)
 253  : BC_TumbleTextBox(window,
 254         (float)plugin->config.length,
 255         (float)0,
 256         (float)10,
 257         x,
 258         y,
 259         100)
 260 {
 261         this->plugin = plugin;
 262         set_increment(0.01);
 263 }
 264
 265 DelayAudioTextBox::~DelayAudioTextBox()
 266 {
 267 }
 268
 269 int DelayAudioTextBox::handle_event()
 270 {
 271         plugin->config.length = atof(get_text());
 272         if(plugin->config.length < 0) plugin->config.length = 0;
 273         plugin->send_configure_change();
 274         return 1;
 275 }
 276
 277
 278
 279
 280
 281
 282
 283
 284 DelayAudioConfig::DelayAudioConfig()
 285 {
 286         length = 1;
 287 }
 288
 289 int DelayAudioConfig::equivalent(DelayAudioConfig &that)
 290 {
 291         return(EQUIV(this->length, that.length));
 292 }
 293
 294 void DelayAudioConfig::copy_from(DelayAudioConfig &that)
 295 {
 296         this->length = that.length;
 297 }
 298
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