cinelerra-5.1/plugins/resamplert/resamplert.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2010-2016 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 "filexml.h"
  25 #include "language.h"
  26 #include "resamplert.h"
  27 #include "theme.h"
  28 #include "transportque.h"
  29
  30 #include <string.h>
  31
  32
  33
  34
  35
  36
  37
  38 REGISTER_PLUGIN(ResampleRT);
  39
  40
  41
  42 ResampleRTConfig::ResampleRTConfig()
  43 {
  44         num = 1;
  45         denom = 1;
  46 }
  47
  48
  49 int ResampleRTConfig::equivalent(ResampleRTConfig &src)
  50 {
  51         return fabs(num - src.num) < 0.0001 &&
  52                 fabs(denom - src.denom) < 0.0001;
  53 }
  54
  55 void ResampleRTConfig::copy_from(ResampleRTConfig &src)
  56 {
  57         this->num = src.num;
  58         this->denom = src.denom;
  59 }
  60
  61 void ResampleRTConfig::interpolate(ResampleRTConfig &prev,
  62         ResampleRTConfig &next,
  63         int64_t prev_frame,
  64         int64_t next_frame,
  65         int64_t current_frame)
  66 {
  67         this->num = prev.num;
  68         this->denom = prev.denom;
  69 }
  70
  71 void ResampleRTConfig::boundaries()
  72 {
  73         if(num < 0.0001) num = 0.0001;
  74         if(denom < 0.0001) denom = 0.0001;
  75 }
  76
  77
  78
  79
  80 ResampleRTWindow::ResampleRTWindow(ResampleRT *plugin)
  81  : PluginClientWindow(plugin,
  82         xS(180),
  83         yS(110),
  84         xS(180),
  85         yS(110),
  86         0)
  87 {
  88         this->plugin = plugin;
  89 }
  90
  91 ResampleRTWindow::~ResampleRTWindow()
  92 {
  93 }
  94
  95 void ResampleRTWindow::create_objects()
  96 {
  97         int x = plugin->get_theme()->window_border;
  98         int y = plugin->get_theme()->window_border;
  99
 100         BC_Title *title;
 101         add_subwindow(title = new BC_Title(x, y, _("Input samples:")));
 102         y += title->get_h() + plugin->get_theme()->widget_border;
 103         num = new ResampleRTNum(this, plugin, x, y);
 104         num->create_objects();
 105
 106         y += num->get_h() + plugin->get_theme()->widget_border;
 107         add_subwindow(title = new BC_Title(x, y, _("Output samples:")));
 108         y += title->get_h() + plugin->get_theme()->widget_border;
 109         denom = new ResampleRTDenom(this, plugin, x, y);
 110         denom->create_objects();
 111
 112         show_window();
 113 }
 114
 115
 116
 117
 118
 119
 120 ResampleRTNum::ResampleRTNum(ResampleRTWindow *window,
 121         ResampleRT *plugin,
 122         int x,
 123         int y)
 124  : BC_TumbleTextBox(window,
 125         plugin->config.num,
 126         (float)0.0001,
 127         (float)1000,
 128         x,
 129         y,
 130         100)
 131 {
 132         this->plugin = plugin;
 133         set_increment(0.001);
 134 }
 135
 136 int ResampleRTNum::handle_event()
 137 {
 138         plugin->config.num = atof(get_text());
 139         plugin->config.boundaries();
 140         plugin->send_configure_change();
 141         return 1;
 142 }
 143
 144
 145
 146
 147 ResampleRTDenom::ResampleRTDenom(ResampleRTWindow *window,
 148         ResampleRT *plugin,
 149         int x,
 150         int y)
 151  : BC_TumbleTextBox(window,
 152         plugin->config.denom,
 153         (float)0.0001,
 154         (float)1000,
 155         x,
 156         y,
 157         100)
 158 {
 159         this->plugin = plugin;
 160         set_increment(0.001);
 161 }
 162
 163 int ResampleRTDenom::handle_event()
 164 {
 165         plugin->config.denom = atof(get_text());
 166         plugin->config.boundaries();
 167         plugin->send_configure_change();
 168         return 1;
 169 }
 170
 171
 172
 173
 174
 175
 176 ResampleRTResample::ResampleRTResample(ResampleRT *plugin)
 177  : Resample()
 178 {
 179         this->plugin = plugin;
 180 }
 181
 182 // To get the keyframes to work, resampling is always done in the forward
 183 // direction with the plugin converting to reverse.
 184 int ResampleRTResample::read_samples(Samples *buffer,
 185         int64_t start,
 186         int64_t len)
 187 {
 188         int result = plugin->read_samples(buffer,
 189                 0,
 190                 plugin->get_samplerate(),
 191                 plugin->source_start,
 192                 len);
 193
 194 //printf("ResampleRTResample::read_samples %lld %lld %lld %d\n", start, plugin->source_start, len, result);
 195         if(plugin->get_direction() == PLAY_FORWARD)
 196                 plugin->source_start += len;
 197         else
 198                 plugin->source_start -= len;
 199
 200         return result;
 201 }
 202
 203
 204
 205
 206
 207
 208 ResampleRT::ResampleRT(PluginServer *server)
 209  : PluginAClient(server)
 210 {
 211         resample = 0;
 212         need_reconfigure = 1;
 213         prev_scale = 0;
 214         dest_start = -1;
 215 }
 216
 217
 218 ResampleRT::~ResampleRT()
 219 {
 220         delete resample;
 221 }
 222
 223 const char* ResampleRT::plugin_title() { return N_("ResampleRT"); }
 224 int ResampleRT::is_realtime() { return 1; }
 225 int ResampleRT::is_synthesis() { return 1; }
 226
 227
 228 NEW_WINDOW_MACRO(ResampleRT, ResampleRTWindow)
 229
 230 LOAD_CONFIGURATION_MACRO(ResampleRT, ResampleRTConfig)
 231
 232
 233 int ResampleRT::process_buffer(int64_t size,
 234         Samples *buffer,
 235         int64_t start_position,
 236         int sample_rate)
 237 {
 238         if(!resample) resample = new ResampleRTResample(this);
 239
 240         need_reconfigure |= load_configuration();
 241
 242
 243         if(start_position != dest_start) need_reconfigure = 1;
 244         dest_start = start_position;
 245
 246 // Get start position of the input.
 247 // Sample 0 is the keyframe position
 248         if(need_reconfigure)
 249         {
 250                 int64_t prev_position = edl_to_local(
 251                         get_prev_keyframe(
 252                                 get_source_position())->position);
 253
 254                 if(prev_position == 0)
 255                 {
 256                         prev_position = get_source_start();
 257                 }
 258
 259                 source_start = (int64_t)((start_position - prev_position) *
 260                         config.num / config.denom) + prev_position;
 261
 262                 resample->reset();
 263                 need_reconfigure = 0;
 264         }
 265
 266         resample->resample(buffer,
 267                 size,
 268                 (int)(65536 * config.num),
 269                 (int)(65536 * config.denom),
 270                 start_position,
 271                 get_direction());
 272
 273         if(get_direction() == PLAY_FORWARD)
 274                 dest_start += size;
 275         else
 276                 dest_start -= size;
 277
 278         return 0;
 279 }
 280
 281 void ResampleRT::render_stop()
 282 {
 283         need_reconfigure = 1;
 284 }
 285
 286
 287
 288
 289 void ResampleRT::save_data(KeyFrame *keyframe)
 290 {
 291         FileXML output;
 292
 293 // cause data to be stored directly in text
 294         output.set_shared_output(keyframe->xbuf);
 295         output.tag.set_title("RESAMPLERT");
 296         output.tag.set_property("SCALE", config.num);
 297         output.tag.set_property("DENOM", config.denom);
 298         output.append_tag();
 299         output.tag.set_title("/RESAMPLERT");
 300         output.append_tag();
 301         output.append_newline();
 302         output.terminate_string();
 303 }
 304
 305 void ResampleRT::read_data(KeyFrame *keyframe)
 306 {
 307         FileXML input;
 308
 309         input.set_shared_input(keyframe->xbuf);
 310
 311         while(!input.read_tag())
 312         {
 313                 if(input.tag.title_is("RESAMPLERT"))
 314                 {
 315                         config.num = input.tag.get_property("SCALE", config.num);
 316                         config.denom = input.tag.get_property("DENOM", config.denom);
 317                 }
 318         }
 319 }
 320
 321 void ResampleRT::update_gui()
 322 {
 323         if(thread)
 324         {
 325                 if(load_configuration())
 326                 {
 327                         thread->window->lock_window("ResampleRT::update_gui");
 328                         ((ResampleRTWindow*)thread->window)->num->update((float)config.num);
 329                         ((ResampleRTWindow*)thread->window)->denom->update((float)config.denom);
 330                         thread->window->unlock_window();
 331                 }
 332         }
 333 }
 334
 335
 336
 337
 338