flac_private_window.h 3.2 KB

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  1. /* libFLAC - Free Lossless Audio Codec library
  2. * Copyright (C) 2006,2007 Josh Coalson
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions
  6. * are met:
  7. *
  8. * - Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. *
  11. * - Redistributions in binary form must reproduce the above copyright
  12. * notice, this list of conditions and the following disclaimer in the
  13. * documentation and/or other materials provided with the distribution.
  14. *
  15. * - Neither the name of the Xiph.org Foundation nor the names of its
  16. * contributors may be used to endorse or promote products derived from
  17. * this software without specific prior written permission.
  18. *
  19. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20. * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
  23. * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  24. * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  25. * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  26. * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  27. * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  28. * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  29. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30. */
  31. #ifndef FLAC__PRIVATE__WINDOW_H
  32. #define FLAC__PRIVATE__WINDOW_H
  33. #ifdef HAVE_CONFIG_H
  34. #include <config.h>
  35. #endif
  36. #include "flac_private_float.h"
  37. #include "flac_FLAC_format.h"
  38. #ifndef FLAC__INTEGER_ONLY_LIBRARY
  39. /*
  40. * FLAC__window_*()
  41. * --------------------------------------------------------------------
  42. * Calculates window coefficients according to different apodization
  43. * functions.
  44. *
  45. * OUT window[0,L-1]
  46. * IN L (number of points in window)
  47. */
  48. void FLAC__window_bartlett(FLAC__real *window, const FLAC__int32 L);
  49. void FLAC__window_bartlett_hann(FLAC__real *window, const FLAC__int32 L);
  50. void FLAC__window_blackman(FLAC__real *window, const FLAC__int32 L);
  51. void FLAC__window_blackman_harris_4term_92db_sidelobe(FLAC__real *window, const FLAC__int32 L);
  52. void FLAC__window_connes(FLAC__real *window, const FLAC__int32 L);
  53. void FLAC__window_flattop(FLAC__real *window, const FLAC__int32 L);
  54. void FLAC__window_gauss(FLAC__real *window, const FLAC__int32 L, const FLAC__real stddev); /* 0.0 < stddev <= 0.5 */
  55. void FLAC__window_hamming(FLAC__real *window, const FLAC__int32 L);
  56. void FLAC__window_hann(FLAC__real *window, const FLAC__int32 L);
  57. void FLAC__window_kaiser_bessel(FLAC__real *window, const FLAC__int32 L);
  58. void FLAC__window_nuttall(FLAC__real *window, const FLAC__int32 L);
  59. void FLAC__window_rectangle(FLAC__real *window, const FLAC__int32 L);
  60. void FLAC__window_triangle(FLAC__real *window, const FLAC__int32 L);
  61. void FLAC__window_tukey(FLAC__real *window, const FLAC__int32 L, const FLAC__real p);
  62. void FLAC__window_welch(FLAC__real *window, const FLAC__int32 L);
  63. #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
  64. #endif