Assists music production by grouping standalone programs into sessions. Community version of "Non Session Manager".
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  1. /*******************************************************************************/
  2. /* Copyright (C) 2008 Jonathan Moore Liles */
  3. /* */
  4. /* This program is free software; you can redistribute it and/or modify it */
  5. /* under the terms of the GNU General Public License as published by the */
  6. /* Free Software Foundation; either version 2 of the License, or (at your */
  7. /* option) any later version. */
  8. /* */
  9. /* This program is distributed in the hope that it will be useful, but WITHOUT */
  10. /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
  11. /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
  12. /* more details. */
  13. /* */
  14. /* You should have received a copy of the GNU General Public License along */
  15. /* with This program; see the file COPYING. If not,write to the Free Software */
  16. /* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
  17. /*******************************************************************************/
  18. #include <stdio.h>
  19. #include <FL/Enumerations.H>
  20. #include <FL/Fl.H>
  21. #include <FL/fl_draw.H>
  22. #include "Timeline.H"
  23. #include "Audio_File.H"
  24. #include <math.h>
  25. const bool outline = true;
  26. const bool vary_color = true;
  27. /** draw a portion of /clip/'s waveform. coordinates are the portion to draw */
  28. void
  29. draw_waveform ( int ox, int X, int Y, int W, int H, Audio_File *_clip, int channel, float fpp, nframes_t _start, nframes_t _end, float _scale, Fl_Color color )
  30. {
  31. fl_push_clip( X, Y, W, H );
  32. int j;
  33. // int start = timeline->ts_to_x( _start );
  34. int start = timeline->ts_to_x( _start ) + (X - ox);
  35. const Peaks *pk = _clip->peaks( channel );
  36. _start = timeline->x_to_ts( start );
  37. pk->fill_buffer( fpp, _start, _start + timeline->x_to_ts( W ) );
  38. j = start;
  39. for ( int x = X; x <= X + W; ++x, ++j )
  40. {
  41. Peak p = (*pk)[ j ];
  42. int mid = Y + (H / 2);
  43. p.max *= _scale;
  44. p.min *= _scale;
  45. if ( vary_color )
  46. fl_color( fl_color_average( FL_RED, color, fabs( p.max - p.min ) - 1.0 ) );
  47. else
  48. fl_color( color );
  49. if ( p.min < -1.0 || p.max > 1.0 )
  50. fl_color( FL_RED );
  51. fl_line( x, mid + (H / 2 * p.min), x, mid + (H / 2 * p.max) );
  52. }
  53. if ( outline )
  54. {
  55. fl_color( fl_darker( fl_darker( color ) ) );
  56. fl_line_style( FL_SOLID, 2 );
  57. fl_begin_line();
  58. j = start;
  59. for ( int x = X; x <= X + W; ++x, ++j )
  60. {
  61. Peak p = (*pk)[ j ];
  62. p.min *= _scale;
  63. fl_vertex( x, Y + (H / 2) + ((float)H / 2 * p.min ));
  64. }
  65. fl_end_line();
  66. fl_begin_line();
  67. j = start;
  68. for ( int x = X; x <= X + W; ++x, ++j )
  69. {
  70. Peak p = (*pk)[ j ];
  71. p.max *= _scale;
  72. fl_vertex( x, Y + (H / 2) + ((float)H / 2 * p.max ));
  73. }
  74. fl_end_line();
  75. fl_line_style( FL_SOLID, 0 );
  76. }
  77. fl_pop_clip();
  78. }