workbench/devs/AHI/Device/database.h

   1 /*
   2      AHI - Hardware independent audio subsystem
   3      Copyright (C) 1996-2005 Martin Blom <martin@blom.org>
   4
   5      This library is free software; you can redistribute it and/or
   6      modify it under the terms of the GNU Library General Public
   7      License as published by the Free Software Foundation; either
   8      version 2 of the License, or (at your option) any later version.
   9
  10      This library is distributed in the hope that it will be useful,
  11      but WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13      Library General Public License for more details.
  14
  15      You should have received a copy of the GNU Library General Public
  16      License along with this library; if not, write to the
  17      Free Software Foundation, Inc., 59 Temple Place - Suite 330, Cambridge,
  18      MA 02139, USA.
  19 */
  20
  21 #ifndef ahi_database_h
  22 #define ahi_database_h
  23
  24 #include <exec/types.h>
  25 #include <exec/semaphores.h>
  26 #include <exec/lists.h>
  27
  28 /* Current implementation of the database (Version 0):
  29    Use FreeVec() to free the structure. */
  30
  31 #define ADB_NAME  "Audio Mode Database"
  32
  33 struct AHI_AudioDatabase
  34 {
  35   struct SignalSemaphore  ahidb_Semaphore;      /* The Semaphore */
  36   struct MinList          ahidb_AudioModes;     /* The Audio Database */
  37   UBYTE                   ahidb_Version;        /* Version number (0) */
  38   UBYTE                   ahidb_Name[sizeof(ADB_NAME)]; /* Name */
  39
  40 };
  41
  42
  43 ULONG
  44 _AHI_NextAudioID( ULONG           id,
  45                   struct AHIBase* AHIBase );
  46
  47 ULONG
  48 _AHI_AddAudioMode( struct TagItem* DBtags,
  49                    struct AHIBase* AHIBase );
  50
  51 ULONG
  52 _AHI_RemoveAudioMode( ULONG           id,
  53                       struct AHIBase* AHIBase );
  54
  55 ULONG
  56 _AHI_LoadModeFile( UBYTE*          name,
  57                    struct AHIBase* AHIBase );
  58
  59 struct AHI_AudioDatabase*
  60 LockDatabase( void );
  61
  62 struct AHI_AudioDatabase*
  63 LockDatabaseWrite( void );
  64
  65 void
  66 UnlockDatabase( struct AHI_AudioDatabase* audiodb );
  67
  68 struct TagItem*
  69 GetDBTagList( struct AHI_AudioDatabase* audiodb,
  70               ULONG id );
  71
  72 #endif /* ahi_database_h */