linuxaudio
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new-session-manager
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Assists music production by grouping standalone programs into sessions. Community version of "Non Session Manager".
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new-session-manager/mixer/src/SpectrumView.H

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  1. 

  2. /*******************************************************************************/

  3. /* Copyright (C) 2013 Mark McCurry                                             */

  4. /* Copyright (C) 2013 Jonathan Moore Liles                                     */

  5. /*                                                                             */

  6. /* This program is free software; you can redistribute it and/or modify it     */

  7. /* under the terms of the GNU General Public License as published by the       */

  8. /* Free Software Foundation; either version 2 of the License, or (at your      */

  9. /* option) any later version.                                                  */

  10. /*                                                                             */

  11. /* This program is distributed in the hope that it will be useful, but WITHOUT */

  12. /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       */

  13. /* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for   */

  14. /* more details.                                                               */

  15. /*                                                                             */

  16. /* You should have received a copy of the GNU General Public License along     */

  17. /* with This program; see the file COPYING.  If not,write to the Free Software */

  18. /* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

  19. /*******************************************************************************/

  20. 

  21. #include <FL/Fl_Box.H>

  22. 

  23. class SpectrumView : public Fl_Box

  24. {

  25.     static unsigned int _sample_rate;

  26.     static float _fmin;

  27.     static float _fmax;

  28.     unsigned int _nframes;

  29. 

  30.     float * _data;

  31.     float * _bands;

  32.     float _dbmin;

  33.     float _dbmax;

  34.     bool _auto_level;

  35. 

  36.     void draw_curve ( void );

  37.     void draw_semilog ( void );

  38.     void analyze_data ( unsigned int plan_size );

  39.     void clear_bands ( void );

  40.     static void clear_plans ( void );

  41. 

  42. public:

  43.     

  44.     static void sample_rate ( unsigned int sample_rate );

  45. 

  46.     /* set dB range. If min == max, then auto leveling will be enabled */

  47.     void db_range ( float min, float max )

  48.         {

  49.             _dbmin = min;

  50.             _dbmax = max;

  51.             _auto_level = min == max;

  52.         }

  53.    

  54.         /** /data/ must point to allocated memory. It will be freed when new data is set or when the control is destroyed */

  55. 

  56.     void data ( float *data, unsigned int data_frames );

  57. 

  58.     SpectrumView ( int X, int Y, int W, int H, const char *L=0 );

  59.     virtual ~SpectrumView ( );

  60. 

  61.     virtual void resize ( int X, int Y, int W, int H );

  62.     virtual void draw ( void );

  63. };