firmware/drivers/audio/sdl.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright © 2010 Thomas Martitz
  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
  22 #include <SDL_audio.h>
  23 #include "config.h"
  24 #include "audiohw.h"
  25
  26 /**
  27  * Audio Hardware api. Make them do nothing as we cannot properly simulate with
  28  * SDL. if we used DSP we would run code that doesn't actually run on the target
  29  **/
  30
  31 extern void pcm_set_mixer_volume(int);
  32
  33 void audiohw_set_volume(int volume)
  34 {
  35     pcm_set_mixer_volume(
  36         SDL_MIX_MAXVOLUME * ((volume - VOLUME_MIN) / 10) / (VOLUME_RANGE / 10));
  37 }
  38
  39 /* values for SDL playback/dummies for sim */
  40 const struct sound_settings_info audiohw_settings[] = {
  41     [SOUND_VOLUME]        = {"dB", 0,  1, VOLUME_MIN / 10, VOLUME_MAX / 10, -25},
  42     [SOUND_BASS]          = {"dB", 0,  1, -24,  24,   0},
  43     [SOUND_TREBLE]        = {"dB", 0,  1, -24,  24,   0},
  44     [SOUND_BALANCE]       = {"%",  0,  1,-100, 100,   0},
  45     [SOUND_CHANNELS]      = {"",   0,  1,   0,   5,   0},
  46     [SOUND_STEREO_WIDTH]  = {"%",  0,  5,   0, 250, 100},
  47 #if defined(HAVE_RECORDING)
  48     [SOUND_LEFT_GAIN]     = {"dB", 1,  1,-128,  96,   0},
  49     [SOUND_RIGHT_GAIN]    = {"dB", 1,  1,-128,  96,   0},
  50     [SOUND_MIC_GAIN]      = {"dB", 1,  1,-128, 108,  16},
  51 #endif
  52 #if defined(AUDIOHW_HAVE_BASS_CUTOFF)
  53     [SOUND_BASS_CUTOFF]   = {"",   0,  1,   1,   4,   1},
  54 #endif
  55 #if defined(AUDIOHW_HAVE_TREBLE_CUTOFF)
  56     [SOUND_TREBLE_CUTOFF] = {"",   0,  1,   1,   4,   1},
  57 #endif
  58 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
  59     [SOUND_LOUDNESS]      = {"dB", 0,  1,   0,  17,   0},
  60     [SOUND_AVC]           = {"",   0,  1,  -1,   4,   0},
  61     [SOUND_MDB_STRENGTH]  = {"dB", 0,  1,   0, 127,  48},
  62     [SOUND_MDB_HARMONICS] = {"%",  0,  1,   0, 100,  50},
  63     [SOUND_MDB_CENTER]    = {"Hz", 0, 10,  20, 300,  60},
  64     [SOUND_MDB_SHAPE]     = {"Hz", 0, 10,  50, 300,  90},
  65     [SOUND_MDB_ENABLE]    = {"",   0,  1,   0,   1,   0},
  66     [SOUND_SUPERBASS]     = {"",   0,  1,   0,   1,   0},
  67 #endif /* (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F) */
  68 };
  69
  70 /**
  71  * stubs here, for the simulator
  72  **/
  73
  74 #if defined(AUDIOHW_HAVE_PRESCALER)
  75 void audiohw_set_prescaler(int value)   { (void)value; }
  76 #endif
  77 #if defined(AUDIOHW_HAVE_BALANCE)
  78 void audiohw_set_balance(int value)     { (void)value; }
  79 #endif
  80 #if defined(AUDIOHW_HAVE_BASS)
  81 void audiohw_set_bass(int value)        { (void)value; }
  82 #endif
  83 #if defined(AUDIOHW_HAVE_TREBLE)
  84 void audiohw_set_treble(int value)      { (void)value; }
  85 #endif
  86 #if CONFIG_CODEC != SWCODEC
  87 void audiohw_set_channel(int value)     { (void)value; }
  88 void audiohw_set_stereo_width(int value){ (void)value; }
  89 #endif
  90 #if defined(AUDIOHW_HAVE_BASS_CUTOFF)
  91 void audiohw_set_bass_cutoff(int value) { (void)value; }
  92 #endif
  93 #if defined(AUDIOHW_HAVE_TREBLE_CUTOFF)
  94 void audiohw_set_treble_cutoff(int value){ (void)value; }
  95 #endif
  96 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
  97 int mas_codec_readreg(int reg)
  98 {
  99     (void)reg;
 100     return 0;
 101 }
 102
 103 int mas_codec_writereg(int reg, unsigned int val)
 104 {
 105     (void)reg;
 106     (void)val;
 107     return 0;
 108 }
 109 int mas_writemem(int bank, int addr, const unsigned long* src, int len)
 110 {
 111     (void)bank;
 112     (void)addr;
 113     (void)src;
 114     (void)len;
 115     return 0;
 116 }
 117 #endif