headers/private/audio/R3MediaDefs.h

   1 /******************************************************************************
   2
   3   File:  MediaDefs.h
   4
   5   Copyright 1995-1999, Be Incorporated
   6   This file may be used under the terms of the Be Sample Code License.
   7
   8 ******************************************************************************/
   9 #ifndef _R3_MEDIA_DEFS_H
  10 #define _R3_MEDIA_DEFS_H
  11
  12 #include <SupportDefs.h>
  13 #include <Errors.h>
  14 #if defined(__cplusplus)
  15 #  include <MediaDefs.h>
  16 #else
  17         /* values for byte_ordering */
  18         enum { B_BIG_ENDIAN, B_LITTLE_ENDIAN };
  19
  20         /* values for sample_format */
  21         enum {
  22                 B_UNDEFINED_SAMPLES,
  23                 B_LINEAR_SAMPLES,
  24                 B_FLOAT_SAMPLES,
  25                 B_MULAW_SAMPLES
  26         };
  27 #endif
  28
  29 /* Buffer header for audio server */
  30
  31 typedef struct audio_buffer_header {
  32         int32           buffer_number;
  33         int32           subscriber_count;
  34         bigtime_t       time;
  35         int32           reserved_1;
  36         int32           reserved_2;
  37         bigtime_t       sample_clock;
  38 } audio_buffer_header;
  39
  40
  41 #define         B_MEDIA_LEVEL                           B_REAL_TIME_PRIORITY
  42
  43 #define         B_NO_CHANGE                                     (-1)
  44
  45 /* ================
  46    Subscriber IDs and special values
  47    ================ */
  48
  49 #define         B_NO_SUBSCRIBER_ID                      ((subscriber_id)-1)
  50 #define         B_NO_SUBSCRIBER_NAME            "not subscribed"
  51
  52 #define         B_SHARED_SUBSCRIBER_ID          ((subscriber_id)-2)
  53 #define         B_SHARED_SUBSCRIBER_NAME        "shared subscriber"
  54
  55 /* ================
  56    Values for sound files and audio streams
  57    ================ */
  58
  59
  60 /* Audio device codes for BAudioSubscriber's
  61  * Get/SetVolume() and EnableDevice() calls
  62  */
  63 enum {
  64         B_CD_THROUGH = 0,
  65         B_LINE_IN_THROUGH,
  66         B_ADC_IN,
  67         B_LOOPBACK,
  68         B_DAC_OUT,
  69         B_MASTER_OUT,
  70         B_SPEAKER_OUT,
  71         B_SOUND_DEVICE_END
  72 };
  73
  74 /* ADC input codes */
  75 enum {
  76         B_CD_IN,
  77         B_LINE_IN,
  78         B_MIC_IN
  79 };
  80
  81 enum {
  82         B_DAC_STREAM = 2354,
  83         B_ADC_STREAM
  84 };
  85
  86 #endif /* #ifndef _R3_MEDIA_DEFS_H */