cinelerra-5.1/cinelerra/virtualaconsole.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 "aedit.h"
  23 #include "amodule.h"
  24 #include "arender.h"
  25 #include "assets.h"
  26 #include "atrack.h"
  27 #include "audiodevice.h"
  28 #include "bcsignals.h"
  29 #include "condition.h"
  30 #include "edit.h"
  31 #include "edits.h"
  32 #include "edl.h"
  33 #include "edlsession.h"
  34 #include "file.h"
  35 #include "levelwindow.h"
  36 #include "playabletracks.h"
  37 #include "plugin.h"
  38 #include "preferences.h"
  39 #include "renderengine.h"
  40 #include "samples.h"
  41 #include "thread.h"
  42 #include "tracks.h"
  43 #include "transportque.h"
  44 #include "virtualaconsole.h"
  45 #include "virtualanode.h"
  46 #include "virtualnode.h"
  47
  48
  49 VirtualAConsole::VirtualAConsole(RenderEngine *renderengine, ARender *arender)
  50  : VirtualConsole(renderengine, arender, TRACK_AUDIO)
  51 {
  52         this->arender = arender;
  53         output_temp = 0;
  54         output_allocation = 0;
  55 }
  56
  57 VirtualAConsole::~VirtualAConsole()
  58 {
  59         if(output_temp) delete output_temp;
  60 }
  61
  62
  63 void VirtualAConsole::get_playable_tracks()
  64 {
  65         if(!playable_tracks)
  66                 playable_tracks = new PlayableTracks(renderengine->get_edl(),
  67                         commonrender->current_position,
  68                         renderengine->command->get_direction(),
  69                         TRACK_AUDIO,
  70                         1);
  71 }
  72
  73
  74 VirtualNode* VirtualAConsole::new_entry_node(Track *track,
  75         Module *module,
  76         int track_number)
  77 {
  78         return new VirtualANode(renderengine,
  79                 this, module, 0, track, 0);
  80         return 0;
  81 }
  82
  83
  84
  85 int VirtualAConsole::process_buffer(int64_t len,
  86         int64_t start_position)
  87 {
  88         int result = 0;
  89         const int debug = 0;
  90 if(debug) printf("VirtualAConsole::process_buffer %d this=%p len=%jd\n",
  91   __LINE__, this, len);
  92
  93
  94 // clear output buffers
  95         for(int i = 0; i < MAX_CHANNELS; i++)
  96         {
  97 // if(debug) printf("VirtualAConsole::process_buffer 2 %d %p %jd\n",
  98 // i,
  99 // arender->audio_out[i],
 100 // len);
 101
 102                 if(arender->audio_out[i])
 103                 {
 104                         bzero(arender->audio_out[i]->get_data(), len * sizeof(double));
 105                 }
 106         }
 107
 108 // Create temporary output
 109         if(output_temp && output_allocation < len)
 110         {
 111                 delete output_temp;
 112                 output_temp = 0;
 113         }
 114
 115         if(!output_temp)
 116         {
 117                 output_temp = new Samples(len);
 118                 output_allocation = len;
 119         }
 120 if(debug) printf("VirtualAConsole::process_buffer %d\n", __LINE__);
 121
 122
 123 // Reset plugin rendering status
 124         reset_attachments();
 125 //printf("VirtualAConsole::process_buffer 1 %p\n", output_temp);
 126
 127 if(debug) printf("VirtualAConsole::process_buffer %d\n", __LINE__);
 128
 129
 130 // Render exit nodes
 131         for(int i = 0; i < exit_nodes.total; i++)
 132         {
 133                 VirtualANode *node = (VirtualANode*)exit_nodes.values[i];
 134                 Track *track = node->track;
 135
 136                 result |= node->render(output_temp,
 137                         len,
 138                         start_position + track->nudge,
 139                         renderengine->get_edl()->session->sample_rate);
 140         }
 141 if(debug) printf("VirtualAConsole::process_buffer %d\n", __LINE__);
 142
 143
 144
 145 // get peaks and limit volume in the fragment
 146         for(int i = 0; i < MAX_CHANNELS; i++)
 147         {
 148                 if(arender->audio_out[i])
 149                 {
 150                         double *current_buffer = arender->audio_out[i]->get_data();
 151
 152
 153                         for(int j = 0; j < len; )
 154                         {
 155                                 int meter_render_end;
 156 // Get length to test for meter and limit
 157                                 if(renderengine->command->realtime)
 158                                         meter_render_end = j + arender->meter_render_fragment;
 159                                 else
 160                                         meter_render_end = len;
 161
 162                                 if(meter_render_end > len)
 163                                         meter_render_end =  len;
 164
 165                                 double peak = 0;
 166
 167                                 for( ; j < meter_render_end; j++)
 168                                 {
 169 // Level history comes before clipping to get over status
 170                                         double *sample = &current_buffer[j];
 171
 172
 173                                         if(fabs(*sample) > peak) peak = fabs(*sample);
 174 // Make the output device clip it
 175 //                                      if(*sample > 1) *sample = 1;
 176 //                                      else
 177 //                                      if(*sample < -1) *sample = -1;
 178                                 }
 179
 180
 181                                 if(renderengine->command->realtime)
 182                                 {
 183                                         arender->level_history[i][arender->current_level[i]] = peak;
 184                                         arender->level_samples[arender->current_level[i]] =
 185                                                 renderengine->command->get_direction() == PLAY_REVERSE ?
 186                                                 start_position - j :
 187                                                 start_position + j;
 188                                         arender->current_level[i] = arender->get_next_peak(arender->current_level[i]);
 189                                 }
 190                         }
 191                 }
 192         }
 193
 194 if(debug) printf("VirtualAConsole::process_buffer %d\n", __LINE__);
 195
 196
 197
 198
 199
 200 // Pack channels, fix speed and send to device.
 201         if(!renderengine->is_nested &&
 202                 renderengine->command->realtime &&
 203                 !interrupt)
 204         {
 205 // speed parameters
 206 // length compensated for speed
 207                 int real_output_len = 0;
 208 // output sample
 209                 double sample;
 210                 int k;
 211                 double *audio_out_packed[MAX_CHANNELS];
 212                 int audio_channels = renderengine->get_edl()->session->audio_channels;
 213
 214                 for(int i = 0, j = 0;
 215                         i < audio_channels;
 216                         i++)
 217                 {
 218                         audio_out_packed[j++] = arender->audio_out[i]->get_data();
 219                 }
 220                 for(int i = 0;
 221                         i < audio_channels;
 222                         i++)
 223                 {
 224                         int in, out;
 225
 226                         double *current_buffer = audio_out_packed[i];
 227
 228 // Time stretch the fragment to the real_output size
 229                         if(renderengine->command->get_speed() > 1)
 230                         {
 231 // Number of samples in real output buffer for each to sample rendered.
 232                                 int interpolate_len = (int)renderengine->command->get_speed();
 233                                 for(in = 0, out = 0; in < len; )
 234                                 {
 235                                         sample = 0;
 236                                         for(k = 0; k < interpolate_len; k++)
 237                                         {
 238                                                 sample += current_buffer[in++];
 239                                         }
 240
 241                                         sample /= renderengine->command->get_speed();
 242                                         current_buffer[out++] = sample;
 243                                 }
 244                                 real_output_len = out;
 245                         }
 246                         else
 247                         if(renderengine->command->get_speed() < 1)
 248                         {
 249 // number of samples to skip
 250                                 int interpolate_len = (int)(1.0 / renderengine->command->get_speed());
 251                                 real_output_len = len * interpolate_len;
 252
 253                                 for(in = len - 1, out = real_output_len - 1; in >= 0; )
 254                                 {
 255                                         for(k = 0; k < interpolate_len; k++)
 256                                         {
 257                                                 current_buffer[out--] = current_buffer[in];
 258                                         }
 259                                         in--;
 260                                 }
 261                         }
 262                         else
 263                                 real_output_len = len;
 264                 }
 265
 266 // Wait until video is ready
 267                 if(arender->first_buffer)
 268                 {
 269                         renderengine->first_frame_lock->lock("VirtualAConsole::process_buffer");
 270                         arender->first_buffer = 0;
 271                 }
 272                 if(!renderengine->audio->get_interrupted())
 273                 {
 274                         renderengine->audio->write_buffer(audio_out_packed, audio_channels,
 275                                 real_output_len);
 276                 }
 277
 278                 if(renderengine->audio->get_interrupted()) interrupt = 1;
 279         }
 280
 281 if(debug) printf("VirtualAConsole::process_buffer %d\n", __LINE__);
 282
 283
 284
 285
 286
 287         return result;
 288 }
 289
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 313
 314 int VirtualAConsole::init_rendering(int duplicate)
 315 {
 316         return 0;
 317 }
 318
 319
 320 int VirtualAConsole::send_last_output_buffer()
 321 {
 322         renderengine->audio->set_last_buffer();
 323         return 0;
 324 }
 325