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flt_vol: fix regressions, apply_gain takes effect too early so do it it in a loop like how it was before

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This commit is contained in:
hap 2022-05-22 19:06:16 +02:00
parent 034e0d2c87
commit 87a1e2cc2e
1 changed files with 10 additions and 10 deletions
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20
src/devices/sound/flt_vol.cpp
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@ -11,11 +11,11 @@ DEFINE_DEVICE_TYPE(FILTER_VOLUME, filter_volume_device, "filter_volume", "Volume
// filter_volume_device - constructor
//-------------------------------------------------
filter_volume_device::filter_volume_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, FILTER_VOLUME, tag, owner, clock),
device_sound_interface(mconfig, *this),
m_stream(nullptr),
m_gain(0)
filter_volume_device::filter_volume_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, FILTER_VOLUME, tag, owner, clock),
device_sound_interface(mconfig, *this),
m_stream(nullptr),
m_gain(0)
{
}
@ -26,8 +26,10 @@ filter_volume_device::filter_volume_device(const machine_config &mconfig, const
void filter_volume_device::device_start()
{
m_gain = 0x100;
m_gain = 1.0;
m_stream = stream_alloc(1, 1, SAMPLE_RATE_OUTPUT_ADAPTIVE);
save_item(NAME(m_gain));
}
@ -37,13 +39,11 @@ void filter_volume_device::device_start()
void filter_volume_device::sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs)
{
// no need to work here; just copy input stream to output and apply gain
outputs[0] = inputs[0];
outputs[0].apply_gain(m_gain);
for (int i = 0; i < outputs[0].samples(); i++)
outputs[0].put(i, inputs[0].get(i) * m_gain);
}
void filter_volume_device::flt_volume_set_volume(float volume)
{
m_stream->update();