void sound_set_volume(int value)
{
if (!audio_is_initialized)
return;
#if defined(AUDIOHW_HAVE_CLIPPING)
audiohw_set_volume(value);
#else
sound_prescaler.volume = sound_value_to_cb(SOUND_VOLUME, value);
set_prescaled_volume();
#endif
}
void sound_set_volume(int value)
{
if(!audio_is_initialized)
return;
#if defined(AUDIOHW_HAVE_CLIPPING)
audiohw_set_volume(value);
#elif CONFIG_CPU == PNX0101
int tmp = (60 - value * 4) & 0xff;
CODECVOL = tmp | (tmp << 8);
#else
current_volume = value * 10; /* tenth of dB */
set_prescaled_volume();
#endif
}
static void set_prescaled_volume(void)
{
int prescale = 0;
int l, r;
/* The codecs listed use HW tone controls but don't have suitable prescaler
* functionality, so we let the prescaler stay at 0 for these, unless
* SW tone controls are in use. This is to avoid needing the SW DSP just for
* the prescaling.
*/
#if defined(HAVE_SW_TONE_CONTROLS) || !(defined(HAVE_WM8975) \
|| defined(HAVE_WM8711) || defined(HAVE_WM8721) || defined(HAVE_WM8731) \
|| defined(HAVE_WM8758) || defined(HAVE_WM8985) || defined(HAVE_UDA1341))
#if defined(AUDIOHW_HAVE_BASS) && defined(AUDIOHW_HAVE_TREBLE)
prescale = MAX(current_bass, current_treble);
#endif
#if defined(AUDIOHW_HAVE_EQ)
int i;
for (i = 0; i < AUDIOHW_EQ_BAND_NUM; i++)
prescale = MAX(current_eq_band_gain[i], prescale);
#endif
if (prescale < 0)
prescale = 0; /* no need to prescale if we don't boost
bass, treble or eq band */
/* Gain up the analog volume to compensate the prescale gain reduction,
* but if this would push the volume over the top, reduce prescaling
* instead (might cause clipping). */
if (current_volume + prescale > VOLUME_MAX)
prescale = VOLUME_MAX - current_volume;
#endif
#if defined(AUDIOHW_HAVE_PRESCALER)
audiohw_set_prescaler(prescale);
#else
dsp_callback(DSP_CALLBACK_SET_PRESCALE, prescale);
#endif
if (current_volume == VOLUME_MIN)
prescale = 0; /* Make sure the chip gets muted at VOLUME_MIN */
l = r = current_volume + prescale;
/* Balance the channels scaled by the current volume and min volume. */
/* Subtract a dB from VOLUME_MIN to get it to a mute level */
if (current_balance > 0)
{
l -= ((l - (VOLUME_MIN - ONE_DB)) * current_balance) / VOLUME_RANGE;
}
else if (current_balance < 0)
{
r += ((r - (VOLUME_MIN - ONE_DB)) * current_balance) / VOLUME_RANGE;
}
#ifdef HAVE_SW_VOLUME_CONTROL
dsp_callback(DSP_CALLBACK_SET_SW_VOLUME, 0);
#endif
#ifndef HAVE_SDL_AUDIO
#if CONFIG_CODEC == MAS3507D
dac_volume(tenthdb2reg(l), tenthdb2reg(r), false);
#elif defined(HAVE_UDA1380) || defined(HAVE_WM8975) || defined(HAVE_WM8758) \
|| defined(HAVE_WM8711) || defined(HAVE_WM8721) || defined(HAVE_WM8731) \
|| defined(HAVE_WM8750) || defined(HAVE_WM8751) || defined(HAVE_AS3514) \
|| defined(HAVE_TSC2100) || defined(HAVE_AK4537) || defined(HAVE_UDA1341) \
|| defined(HAVE_CS42L55)
audiohw_set_master_vol(tenthdb2master(l), tenthdb2master(r));
#if defined(HAVE_WM8975) || defined(HAVE_WM8758) \
|| (defined(HAVE_WM8751) && defined(TOSHIBA_GIGABEAT_F)) \
|| defined(HAVE_WM8985) || defined(HAVE_CS42L55)
audiohw_set_lineout_vol(tenthdb2master(0), tenthdb2master(0));
#endif
#elif defined(HAVE_TLV320) || defined(HAVE_WM8978) || defined(HAVE_WM8985)
audiohw_set_headphone_vol(tenthdb2master(l), tenthdb2master(r));
#elif defined(HAVE_JZ4740_CODEC) || defined(HAVE_SDL_AUDIO) || defined(ANDROID)
audiohw_set_volume(current_volume);
#endif
#else /* HAVE_SDL_AUDIO */
audiohw_set_volume(current_volume);
#endif /* !HAVE_SDL_AUDIO */
}
static void set_prescaled_volume(void)
{
#if defined(TONE_PRESCALER) || !defined(AUDIOHW_HAVE_MONO_VOLUME)
const int minvol = sound_value_to_cb(SOUND_VOLUME, sound_min(SOUND_VOLUME));
#endif
int volume = sound_prescaler.volume;
#if defined(TONE_PRESCALER)
int prescale = 0;
/* Note: Having Tone + EQ isn't prohibited */
#if defined(AUDIOHW_HAVE_BASS) && defined(AUDIOHW_HAVE_TREBLE)
prescale = MAX(sound_prescaler.bass, sound_prescaler.treble);
#endif
#if defined(AUDIOHW_HAVE_EQ)
for (int i = 0; i < AUDIOHW_EQ_BAND_NUM; i++)
prescale = MAX(sound_prescaler.eq_gain[i], prescale);
#endif
if (prescale < 0)
prescale = 0; /* no need to prescale if we don't boost
bass, treble or eq band */
/* Gain up the analog volume to compensate the prescale gain reduction,
* but if this would push the volume over the top, reduce prescaling
* instead (might cause clipping). */
const int maxvol = sound_value_to_cb(SOUND_VOLUME, sound_max(SOUND_VOLUME));
if (volume + prescale > maxvol)
prescale = maxvol - volume;
audiohw_set_prescaler(prescale);
if (volume <= minvol)
prescale = 0; /* Make sure the audio gets muted */
#ifndef AUDIOHW_HAVE_MONO_VOLUME
/* At the moment, such targets have lousy volume resolution and so minute
boost won't work how we'd like */
volume += prescale;
#endif
#endif /* TONE_PRESCALER */
#if defined(AUDIOHW_HAVE_MONO_VOLUME)
audiohw_set_volume(volume);
#else /* Stereo volume */
int l = volume, r = volume;
/* Balance the channels scaled by the current volume and min volume */
int balance = sound_prescaler.balance; /* percent */
if (balance > 0)
{
l -= (l - minvol) * balance / 100;
}
else if (balance < 0)
{
r += (r - minvol) * balance / 100;
}
audiohw_set_volume(l, r);
#endif /* AUDIOHW_HAVE_MONO_VOLUME */
#if defined(AUDIOHW_HAVE_LINEOUT)
/* For now, lineout stays at unity */
audiohw_set_lineout_volume(0, 0);
#endif /* AUDIOHW_HAVE_LINEOUT */
}
