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*Volume* methods implemented; tested with SoundPlayerTest.cpp; only valid when connected with R5 AudioMixer

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3439 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Jérôme Duval 2003-06-06 13:56:44 +00:00
parent 1f46aaf9f1
commit 37ed595f3a
1 changed files with 59 additions and 13 deletions
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72
src/kits/media/SoundPlayer.cpp
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@ -367,10 +367,16 @@ void
BSoundPlayer::SetVolume(float new_volume)
{
CALLED();
_m_lock.Lock();
if (new_volume >= 0.0f)
if(_m_volumeSlider==NULL)
get_volume_slider();
if(_m_volumeSlider==NULL)
return;
if (new_volume >= 0.0f && new_volume <= 1.0f) {
_m_volume = new_volume;
_m_lock.Unlock();
SetVolumeDB(_m_volumeSlider->MinValue() +
_m_volume * (_m_volumeSlider->MaxValue() - _m_volumeSlider->MinValue()) );
}
}
@ -378,7 +384,17 @@ float
BSoundPlayer::VolumeDB(bool forcePoll)
{
CALLED();
return 20.0f * log10(_m_volume);
if(_m_volumeSlider==NULL)
get_volume_slider();
if(_m_volumeSlider==NULL)
return 0.0;
float values[32];
size_t size = 32 * sizeof(float);
_m_volumeSlider->GetValue(&values, &size, &_m_perfTime);
_m_volume = values[0];
return _m_volume;
}
@ -386,9 +402,17 @@ void
BSoundPlayer::SetVolumeDB(float volume_dB)
{
CALLED();
_m_lock.Lock();
_m_volume = pow(10.0f,volume_dB / 20.0f);
_m_lock.Unlock();
if(_m_volumeSlider==NULL)
get_volume_slider();
if(_m_volumeSlider==NULL)
return;
_m_volume = volume_dB;
int32 count = _m_volumeSlider->CountChannels();
float values[count];
for(int32 i=0; i<count; i++)
values[i] = _m_volume;
_m_volumeSlider->SetValue(values, sizeof(float) * count, 0);
}
@ -398,12 +422,20 @@ BSoundPlayer::GetVolumeInfo(media_node *out_node,
float *out_min_dB,
float *out_max_dB)
{
BROKEN();
CALLED();
if(_m_volumeSlider==NULL)
get_volume_slider();
if(_m_volumeSlider==NULL
|| out_node == NULL
|| out_parameter == NULL
|| out_min_dB == NULL
|| out_max_dB == NULL)
return B_ERROR;
*out_node = m_output.node;
*out_parameter = -1; /* is the parameter ID for the volume control */
*out_min_dB = minDB;
*out_max_dB = maxDB;
*out_node = m_input.node;
*out_parameter = _m_volumeSlider->ID(); /* is the parameter ID for the volume control */
*out_min_dB = _m_volumeSlider->MinValue();
*out_max_dB = _m_volumeSlider->MaxValue();
return B_OK;
}
@ -488,7 +520,21 @@ BSoundPlayer::NotifySoundDone(play_id sound,
void
BSoundPlayer::get_volume_slider()
{
UNIMPLEMENTED();
BMediaRoster *roster = BMediaRoster::CurrentRoster();
if(roster==NULL)
return;
BParameterWeb *web = NULL;
if(roster->GetParameterWebFor(m_input.node, &web) < B_OK)
return;
for(int32 i=0; i<web->CountParameters(); i++) {
BParameter *parameter = web->ParameterAt(i);
if(parameter->Type() != BParameter::B_CONTINUOUS_PARAMETER
|| parameter->Kind() != B_GAIN
|| (parameter->ID() >> 16) != m_input.destination.id)
continue;
_m_volumeSlider = (BContinuousParameter*)parameter;
break;
}
}
void