cinelerra/indexthread.C

   1 #include "asset.h"
   2 #include "bcsignals.h"
   3 #include "condition.h"
   4 #include "edl.h"
   5 #include "edlsession.h"
   6 #include "filexml.h"
   7 #include "indexfile.h"
   8 #include "indexthread.h"
   9 #include "language.h"
  10 #include "mwindow.h"
  11 #include "mwindowgui.h"
  12 #include "preferences.h"
  13 #include "mainsession.h"
  14 #include <unistd.h>
  15 #include "trackcanvas.h"
  16 #include "tracks.h"
  17
  18 // Read data from buffers and calculate peaks
  19
  20 IndexThread::IndexThread(MWindow *mwindow,
  21                                                 IndexFile *index_file,
  22                                                 Asset_GC asset,
  23                                                 char *index_filename,
  24                                                 int64_t buffer_size,
  25                                                 int64_t length_source)
  26 {
  27         this->asset = asset;
  28         this->buffer_size = buffer_size;
  29         this->length_source = length_source;
  30         this->mwindow = mwindow;
  31         this->index_filename = index_filename;
  32         this->index_file = index_file;
  33
  34 // initialize output data
  35         int64_t index_size = mwindow->preferences->index_size /
  36                 sizeof(float) + 1;      // size of output file in floats
  37
  38         delete [] asset->index_buffer;
  39         delete [] asset->index_offsets;
  40         delete [] asset->index_sizes;
  41
  42 // buffer used for drawing during the build.  This is not deleted in the asset
  43         asset->index_buffer = new float[index_size];
  44 // This is deleted in the asset's destructor
  45         asset->index_offsets = new int64_t[asset->channels];
  46         asset->index_sizes = new int64_t[asset->channels];
  47         bzero(asset->index_buffer, index_size * sizeof(float));
  48
  49 // initialization is completed in run
  50         for(int i = 0; i < TOTAL_BUFFERS; i++)
  51         {
  52                 buffer_in[i] = new double*[asset->channels];
  53                 output_lock[i] = new Condition(0, "IndexThread::output_lock");
  54                 input_lock[i] = new Condition(1, "IndexThread::input_lock");
  55                 for(int j = 0; j < asset->channels; j++)
  56                 {
  57                         buffer_in[i][j] = new double[buffer_size];
  58                 }
  59         }
  60
  61         interrupt_flag = 0;
  62 }
  63
  64 IndexThread::~IndexThread()
  65 {
  66         for(int i = 0; i < TOTAL_BUFFERS; i++)
  67         {
  68                 for(int j = 0; j < asset->channels; j++)
  69                 {
  70                         delete [] buffer_in[i][j];
  71                 }
  72                 delete [] buffer_in[i];
  73                 delete output_lock[i];
  74                 delete input_lock[i];
  75         }
  76
  77         delete [] asset->index_buffer;
  78         asset->index_buffer = 0;
  79 }
  80
  81 int IndexThread::start_build()
  82 {
  83         set_synchronous(1);
  84         interrupt_flag = 0;
  85         current_buffer = 0;
  86         for(int i = 0; i <  TOTAL_BUFFERS; i++) last_buffer[i] = 0;
  87         start();
  88 }
  89
  90 int IndexThread::stop_build()
  91 {
  92         join();
  93 }
  94
  95 void IndexThread::run()
  96 {
  97         int done = 0;
  98
  99 // current high samples in index
 100         int64_t *highpoint;
 101 // current low samples in the index
 102         int64_t *lowpoint;
 103 // position in current indexframe
 104         int64_t *frame_position;
 105         int first_point = 1;
 106
 107         highpoint = new int64_t[asset->channels];
 108         lowpoint = new int64_t[asset->channels];
 109         frame_position = new int64_t[asset->channels];
 110
 111 // predict first highpoint for each channel plus padding and initialize it
 112         for(int64_t channel = 0; channel < asset->channels; channel++)
 113         {
 114                 highpoint[channel] =
 115                         asset->index_offsets[channel] =
 116                         (length_source / asset->index_zoom * 2 + 1) * channel;
 117                 lowpoint[channel] = highpoint[channel] + 1;
 118
 119                 frame_position[channel] = 0;
 120         }
 121
 122         int64_t index_start = 0;    // end of index during last edit update
 123         asset->index_end = 0;      // samples in source completed
 124         asset->old_index_end = 0;
 125         asset->index_status = INDEX_BUILDING;
 126         int64_t zoomx = asset->index_zoom;
 127         float *index_buffer = asset->index_buffer;    // output of index build
 128
 129         while(!interrupt_flag && !done)
 130         {
 131                 output_lock[current_buffer]->lock("IndexThread::run");
 132
 133                 if(last_buffer[current_buffer]) done = 1;
 134                 if(!interrupt_flag && !done)
 135                 {
 136 // process buffer
 137                         int64_t fragment_size = input_len[current_buffer];
 138
 139                         for(int channel = 0; channel < asset->channels; channel++)
 140                         {
 141                                 int64_t *highpoint_channel = &highpoint[channel];
 142                                 int64_t *lowpoint_channel = &lowpoint[channel];
 143                                 int64_t *frame_position_channel = &frame_position[channel];
 144                                 double *buffer_source = buffer_in[current_buffer][channel];
 145
 146                                 for(int64_t i = 0; i < fragment_size; i++)
 147                                 {
 148                                         if(*frame_position_channel == zoomx)
 149                                         {
 150                                                 *highpoint_channel += 2;
 151                                                 *lowpoint_channel += 2;
 152                                                 *frame_position_channel = 0;
 153 // store and reset output values
 154                                                 index_buffer[*highpoint_channel] =
 155                                                         index_buffer[*lowpoint_channel] =
 156                                                         buffer_source[i];
 157                                                 asset->index_sizes[channel] = *lowpoint_channel -
 158                                                         asset->index_offsets[channel] +
 159                                                         1;
 160                                         }
 161                                         else
 162                                         {
 163 // get high and low points
 164                                                 if(first_point)
 165                                                 {
 166                                                         index_buffer[*highpoint_channel] =
 167                                                                 index_buffer[*lowpoint_channel] = buffer_source[i];
 168                                                         first_point = 0;
 169                                                 }
 170                                                 else
 171                                                 {
 172                                                         if(buffer_source[i] > index_buffer[*highpoint_channel])
 173                                                                 index_buffer[*highpoint_channel] = buffer_source[i];
 174                                                         else
 175                                                         if(buffer_source[i] < index_buffer[*lowpoint_channel])
 176                                                                 index_buffer[*lowpoint_channel] = buffer_source[i];
 177                                                 }
 178                                         }
 179                                         (*frame_position_channel)++;
 180                                 } // end index one buffer
 181                         }
 182
 183                         asset->index_end += fragment_size;
 184
 185 // draw simultaneously with build
 186                         index_file->redraw_edits(0);
 187                         index_start = asset->index_end;
 188                 }
 189
 190                 input_lock[current_buffer]->unlock();
 191                 current_buffer++;
 192                 if(current_buffer >= TOTAL_BUFFERS) current_buffer = 0;
 193         }
 194
 195         index_file->redraw_edits(1);
 196
 197
 198 // write the index file to disk
 199         asset->write_index(index_filename,
 200                 (lowpoint[asset->channels - 1] + 1) * sizeof(float));
 201
 202
 203         delete [] highpoint;
 204         delete [] lowpoint;
 205         delete [] frame_position;
 206 }
 207
 208
 209
 210 /*
 211 //      Local Variables:
 212 //      mode: C++
 213 //      c-file-style: "linux"
 214 //      End:
 215 */