firmware/target/arm/as3525/audio-as3525.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 by Bertrik Sikken
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "config.h"
  22 #include "system.h"
  23 #include "cpu.h"
  24 #include "audio.h"
  25 #include "audiohw.h"
  26 #include "sound.h"
  27
  28 int audio_channels = 2;
  29
  30 void audio_set_output_source(int source)
  31 {
  32     (void)source;
  33 }
  34
  35 void audio_input_mux(int source, unsigned flags)
  36 {
  37     static int last_source = AUDIO_SRC_PLAYBACK;
  38 #if defined(HAVE_RECORDING) && (INPUT_SRC_CAPS & SRC_CAP_FMRADIO)
  39     static bool last_recording = false;
  40     const bool recording = flags & SRCF_RECORDING;
  41 #else
  42     (void) flags;
  43 #endif
  44
  45     switch (source)
  46     {
  47         default:                        /* playback - no recording */
  48             source = AUDIO_SRC_PLAYBACK;
  49         case AUDIO_SRC_PLAYBACK:
  50             if (source != last_source)
  51             {
  52                 audio_channels = 2;
  53 #if defined(HAVE_RECORDING) || defined(HAVE_FMRADIO_IN)
  54                 audiohw_set_monitor(false);
  55 #endif
  56 #ifdef HAVE_RECORDING
  57                 audiohw_disable_recording();
  58 #endif
  59             }
  60             break;
  61
  62 #if defined(HAVE_RECORDING) && (INPUT_SRC_CAPS & SRC_CAP_MIC)
  63         case AUDIO_SRC_MIC:             /* recording only */
  64             if (source != last_source)
  65             {
  66                 audio_channels = 1;
  67                 audiohw_set_monitor(false);
  68                 audiohw_enable_recording(true);  /* source mic */
  69             }
  70             break;
  71 #endif
  72
  73 #if (INPUT_SRC_CAPS & SRC_CAP_FMRADIO)
  74
  75         case AUDIO_SRC_FMRADIO:         /* recording and playback */
  76             if (source == last_source
  77 #ifdef HAVE_RECORDING
  78                     && recording == last_recording
  79 #endif
  80                 )
  81                 break;
  82
  83             audio_channels = 2;
  84 #ifdef HAVE_RECORDING
  85             last_recording = recording;
  86
  87             if (recording)
  88             {
  89                 audiohw_set_monitor(false);
  90                 audiohw_enable_recording(false);
  91             }
  92             else
  93 #endif
  94             {
  95 #ifdef HAVE_RECORDING
  96                 audiohw_disable_recording();
  97 #endif
  98 #if defined(HAVE_RECORDING) || defined(HAVE_FMRADIO_IN)
  99                 audiohw_set_monitor(true); /* line 2 analog audio path */
 100 #endif
 101             }
 102             break;
 103 #endif /* (INPUT_SRC_CAPS & SRC_CAP_FMRADIO) */
 104     }
 105
 106     last_source = source;
 107 }