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/nonlib/dsp.h

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  1. 

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

  3. /* Copyright (C) 2008 Jonathan Moore Liles                                     */

  4. /*                                                                             */

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

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

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

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

  9. /*                                                                             */

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

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

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

  13. /* more details.                                                               */

  14. /*                                                                             */

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

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

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

  18. /*******************************************************************************/

  19. 

  20. #pragma once

  21. 

  22. #include "JACK/Client.H"

  23. #include <math.h>

  24. 

  25. void buffer_apply_gain ( sample_t *buf, nframes_t nframes, float g );

  26. void buffer_apply_gain_buffer ( sample_t *buf, const sample_t *gainbuf, nframes_t nframes );

  27. void buffer_copy_and_apply_gain_buffer ( sample_t *dst, const sample_t *src, const sample_t *gainbuf, nframes_t nframes );

  28. void buffer_mix ( sample_t *dst, const sample_t *src, nframes_t nframes );

  29. void buffer_mix_with_gain ( sample_t *dst, const sample_t *src, nframes_t nframes, float g );

  30. void buffer_interleave_one_channel ( sample_t *dst, const sample_t *src, int channel, int channels, nframes_t nframes );

  31. void buffer_interleave_one_channel_and_mix ( sample_t *dst, const sample_t *src, int channel, int channels, nframes_t nframes );

  32. void buffer_deinterleave_one_channel ( sample_t *dst, const sample_t *src, int channel, int channels, nframes_t nframes );

  33. void buffer_fill_with_silence ( sample_t *buf, nframes_t nframes );

  34. bool buffer_is_digital_black ( sample_t *buf, nframes_t nframes );

  35. void buffer_copy ( sample_t *dst, const sample_t *src, nframes_t nframes );

  36. void buffer_copy_and_apply_gain ( sample_t *dst, const sample_t *src, nframes_t nframes, float gain );

  37. 

  38. // from SWH plugins.

  39. // Convert a value in dB's to a coefficent

  40. #define DB_CO(g) ((g) > -90.0f ? powf(10.0f, (g) * 0.05f) : 0.0f)

  41. #define CO_DB(v) (20.0f * log10f(v))