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add a bunch more TODOs

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tildearrow 2025-01-29 04:38:12 -05:00
parent 1e891e5e5f
commit 6e63669501
1 changed files with 6 additions and 5 deletions
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11
src/engine/platform/sound/upd1771.cpp
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@ -593,6 +593,7 @@ void upd1771c_device::sound_stream_update(short* output, int len)
break; break;
case STATE_NOISE: case STATE_NOISE:
// TODO: improve this
for (int sampindex = 0; sampindex < len; sampindex++) for (int sampindex = 0; sampindex < len; sampindex++)
{ {
//"wavetable-LFSR" component //"wavetable-LFSR" component
@ -611,7 +612,7 @@ void upd1771c_device::sound_stream_update(short* output, int len)
signed char res[3]; signed char res[3];
for (int i = 0; i < 3; ++i) for (int i = 0; i < 3; ++i)
{ {
res[i] = m_n_value[i] * 127; res[i] = m_n_value[i];
m_n_ppos[i]++; m_n_ppos[i]++;
if (m_n_ppos[i] >= m_n_period[i]) if (m_n_ppos[i] >= m_n_period[i])
{ {
@ -625,10 +626,10 @@ void upd1771c_device::sound_stream_update(short* output, int len)
chout[2]=res[2] * m_n_volume[2]; chout[2]=res[2] * m_n_volume[2];
chout[3]=wlfsr_val * m_nw_volume; chout[3]=wlfsr_val * m_nw_volume;
output[sampindex]= output[sampindex]=
((chout[3]) | ((chout[3]) + // TODO: this is mixed with "mix" instruction rather than add
(chout[0]) | (chout[0]) +
(chout[1]) | (chout[1]) +
(chout[2])) * 8; (chout[2])) * 32 * 8;
} }