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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright © 2010 Thomas Martitz
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <SDL_audio.h>
#include "config.h"
#include "sound.h"
#include "pcm_sampr.h"
#ifdef HAVE_SW_VOLUME_CONTROL
#include "pcm_sw_volume.h"
#include "fixedpoint.h"
#endif
/**
* Audio Hardware api. Make some of them do nothing as we cannot properly
* simulate with SDL. if we used DSP we would run code that doesn't actually
* run on the target
**/
#ifdef HAVE_SW_VOLUME_CONTROL
static int sdl_volume_level(int volume)
{
int shift = (1 - sound_numdecimals(SOUND_VOLUME)) << 16;
int minvol = fp_mul(sound_min(SOUND_VOLUME), fp_exp10(shift, 16), 16);
return volume <= minvol ? INT_MIN : volume;
}
#endif /* HAVE_SW_VOLUME_CONTROL */
#if defined(AUDIOHW_HAVE_MONO_VOLUME)
void audiohw_set_volume(int volume)
{
#ifdef HAVE_SW_VOLUME_CONTROL
volume = sdl_volume_level(volume);
pcm_set_master_volume(volume, volume);
#else
extern void pcm_set_mixer_volume(int volume);
pcm_set_mixer_volume(volume);
#endif
(void)volume;
}
#else /* !AUDIOHW_HAVE_MONO_VOLUME */
void audiohw_set_volume(int vol_l, int vol_r)
{
#ifdef HAVE_SW_VOLUME_CONTROL
vol_l = sdl_volume_level(vol_l);
vol_r = sdl_volume_level(vol_r);
pcm_set_master_volume(vol_l, vol_r);
#endif
(void)vol_l; (void)vol_r;
}
#endif /* AUDIOHW_HAVE_MONO_VOLUME */
#if defined(AUDIOHW_HAVE_PRESCALER)
void audiohw_set_prescaler(int value)
{
#ifdef HAVE_SW_VOLUME_CONTROL
pcm_set_prescaler(value);
#endif
(void)value;
}
#endif /* AUDIOHW_HAVE_PRESCALER */
#if defined(AUDIOHW_HAVE_BALANCE)
void audiohw_set_balance(int value) { (void)value; }
#endif
#ifndef HAVE_SW_TONE_CONTROLS
#if defined(AUDIOHW_HAVE_BASS)
void audiohw_set_bass(int value) { (void)value; }
#endif
#if defined(AUDIOHW_HAVE_TREBLE)
void audiohw_set_treble(int value) { (void)value; }
#endif
#endif /* HAVE_SW_TONE_CONTROLS */
#if defined(AUDIOHW_HAVE_BASS_CUTOFF)
void audiohw_set_bass_cutoff(int value) { (void)value; }
#endif
#if defined(AUDIOHW_HAVE_TREBLE_CUTOFF)
void audiohw_set_treble_cutoff(int value){ (void)value; }
#endif
/* EQ-based tone controls */
#if defined(AUDIOHW_HAVE_EQ)
void audiohw_set_eq_band_gain(unsigned int band, int value)
{ (void)band; (void)value; }
#endif
#if defined(AUDIOHW_HAVE_EQ_FREQUENCY)
void audiohw_set_eq_band_frequency(unsigned int band, int value)
{ (void)band; (void)value; }
#endif
#if defined(AUDIOHW_HAVE_EQ_WIDTH)
void audiohw_set_eq_band_width(unsigned int band, int value)
{ (void)band; (void)value; }
#endif
#if defined(AUDIOHW_HAVE_DEPTH_3D)
void audiohw_set_depth_3d(int value)
{ (void)value; }
#endif
#if defined(AUDIOHW_HAVE_LINEOUT)
void audiohw_set_lineout_volume(int vol_l, int vol_r)
{ (void)vol_l; (void)vol_r; }
#endif
#if defined(AUDIOHW_HAVE_FILTER_ROLL_OFF)
void audiohw_set_filter_roll_off(int value)
{ (void)value; }
#endif
#if defined(AUDIOHW_HAVE_POWER_MODE)
void audiohw_set_power_mode(int value)
{ (void)value; }
#endif
void audiohw_close(void) {}
#ifdef CONFIG_SAMPR_TYPES
unsigned int pcm_sampr_to_hw_sampr(unsigned int samplerate,
unsigned int type)
{ return samplerate; (void)type; }
#endif /* CONFIG_SAMPR_TYPES */
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