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audio.h

audio.h 2.2 KB
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  1. /* 
    2. 

  2.  * Audio 'LIB' defines
    3. 

  3.  */
    4. 

  4. 

  5. #define AUDIO_OUT_HEADPHONES       0x01
    6. 

  6. #define AUDIO_OUT_INTERNAL_SPEAKER 0x02
    7. 

  7. #define AUDIO_OUT_LINE_OUT         0x04
    8. 

  8. 

  9. enum { DECODE_TEST, DECODE_AUDIO, DECODE_FILE, DECODE_BUFFER, DECODE_WAV,
    10. 

  10. 	DECODE_AU,DECODE_CDR,DECODE_AUDIOFILE };
    11. 

  11. 

  12. #define AUDIO_FORMAT_MASK	  0x100
    13. 

  13. #define AUDIO_FORMAT_16		  0x100
    14. 

  14. #define AUDIO_FORMAT_8		  0x000
    15. 

  15. 

  16. #define AUDIO_FORMAT_SIGNED_16    0x110
    17. 

  17. #define AUDIO_FORMAT_UNSIGNED_16  0x120
    18. 

  18. #define AUDIO_FORMAT_UNSIGNED_8   0x1
    19. 

  19. #define AUDIO_FORMAT_SIGNED_8     0x2
    20. 

  20. #define AUDIO_FORMAT_ULAW_8       0x4
    21. 

  21. #define AUDIO_FORMAT_ALAW_8       0x8
    22. 

  22. 

  23. /* 3% rate tolerance */
    24. 

  24. #define AUDIO_RATE_TOLERANCE	  3
    25. 

  25. 

  26. #if 0
    27. 

  27. #if defined(HPUX) || defined(SUNOS) || defined(SOLARIS) || defined(OSS) || defined(__NetBSD__) || defined(SPARCLINUX) || defined(__FreeBSD__)
    28. 

  28. #endif
    29. 

  29. #endif
    30. 

  30. 

  31. #define AUDIO_USES_FD
    32. 

  32. 

  33. #ifdef SGI
    34. 

  34. /* #include <audio.h> */
    35. 

  35. #include <dmedia/audio.h>
    36. 

  36. #endif
    37. 

  37. 

  38. 

  39. #ifdef ALSA
    40. 

  40. #include <sys/asoundlib.h>
    41. 

  41. #endif
    42. 

  42. 

  43. struct audio_info_struct
    44. 

  44. {
    45. 

  45. #ifdef AUDIO_USES_FD
    46. 

  46.   int fn; /* filenumber */
    47. 

  47. #endif
    48. 

  48. #ifdef SGI
    49. 

  49.   ALconfig config;
    50. 

  50.   ALport port;
    51. 

  51. #endif
    52. 

  52.   long rate;
    53. 

  53.   long gain;
    54. 

  54.   int output;
    55. 

  55. #ifdef ALSA
    56. 

  56.   void *handle;
    57. 

  57.   snd_pcm_format_t alsa_format;
    58. 

  58. #endif
    59. 

  59.   char *device;
    60. 

  60.   int channels;
    61. 

  61.   int format;
    62. 

  62.   int private1;
    63. 

  63.   void *private2;
    64. 

  64. };
    65. 

  65. 

  66. struct audio_name {
    67. 

  67.   int  val;
    68. 

  68.   char *name;
    69. 

  69.   char *sname;
    70. 

  70. };
    71. 

  71. 

  72. extern void audio_capabilities(struct audio_info_struct *);
    73. 

  73. extern void audio_fit_capabilities(struct audio_info_struct *ai,int c,int r);
    74. 

  74. 

  75. extern char *audio_encoding_name(int format);
    76. 

  76. 

  77. extern int audio_play_samples(struct audio_info_struct *,unsigned char *,int);
    78. 

  78. extern int audio_open(struct audio_info_struct *);
    79. 

  79. extern int audio_reset_parameters(struct audio_info_struct *);
    80. 

  80. extern int audio_rate_best_match(struct audio_info_struct *ai);
    81. 

  81. extern int audio_set_rate(struct audio_info_struct *);
    82. 

  82. extern int audio_set_format(struct audio_info_struct *);
    83. 

  83. extern int audio_get_formats(struct audio_info_struct *);
    84. 

  84. extern int audio_set_channels(struct audio_info_struct *);
    85. 

  85. extern int audio_write_sample(struct audio_info_struct *,short *,int);
    86. 

  86. extern int audio_close(struct audio_info_struct *);
    87. 

  87. extern void audio_info_struct_init(struct audio_info_struct *);
    88. 

  88. extern void audio_queueflush(struct audio_info_struct *ai);
    89. 

  89.