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Introduce [Mono/Stereo]Sample types.

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This commit is contained in:
Thomas Harte
2024-02-09 09:15:48 -05:00
parent a4a983eb81
commit f3d0827d14
9 changed files with 45 additions and 59 deletions
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Components/AY38910/AY38910.cpp
+11 -15
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@@ -101,7 +101,11 @@ template <bool is_stereo> void AY38910<is_stereo>::set_output_mixing(float a_lef
c_right_ = uint8_t(c_right * 255.0f);
}
template <bool is_stereo> void AY38910<is_stereo>::get_samples(std::size_t number_of_samples, int16_t *target) {
template <bool is_stereo>
void AY38910<is_stereo>::get_samples(
std::size_t number_of_samples,
typename Outputs::Speaker::SampleT<is_stereo>::type *target
) {
// Note on structure below: the real AY has a built-in divider of 8
// prior to applying its tone and noise dividers. But the YM fills the
// same total periods for noise and tone with double-precision envelopes.
@@ -113,11 +117,7 @@ template <bool is_stereo> void AY38910<is_stereo>::get_samples(std::size_t numbe
std::size_t c = 0;
while((master_divider_&3) && c < number_of_samples) {
if constexpr (is_stereo) {
reinterpret_cast<uint32_t *>(target)[c] = output_volume_;
} else {
target[c] = int16_t(output_volume_);
}
target[c] = output_volume_;
master_divider_++;
c++;
}
@@ -159,11 +159,7 @@ template <bool is_stereo> void AY38910<is_stereo>::get_samples(std::size_t numbe
evaluate_output_volume();
for(int ic = 0; ic < 4 && c < number_of_samples; ic++) {
if constexpr (is_stereo) {
reinterpret_cast<uint32_t *>(target)[c] = output_volume_;
} else {
target[c] = int16_t(output_volume_);
}
target[c] = output_volume_;
c++;
master_divider_++;
}
@@ -214,19 +210,19 @@ template <bool is_stereo> void AY38910<is_stereo>::evaluate_output_volume() {
// Mix additively, weighting if in stereo.
if constexpr (is_stereo) {
int16_t *const output_volumes = reinterpret_cast<int16_t *>(&output_volume_);
output_volumes[0] = int16_t((
// int16_t *const output_volumes = reinterpret_cast<int16_t *>(&output_volume_);
output_volume_[0] = int16_t((
volumes_[volumes[0]] * channel_levels[0] * a_left_ +
volumes_[volumes[1]] * channel_levels[1] * b_left_ +
volumes_[volumes[2]] * channel_levels[2] * c_left_
) >> 8);
output_volumes[1] = int16_t((
output_volume_[1] = int16_t((
volumes_[volumes[0]] * channel_levels[0] * a_right_ +
volumes_[volumes[1]] * channel_levels[1] * b_right_ +
volumes_[volumes[2]] * channel_levels[2] * c_right_
) >> 8);
} else {
output_volume_ = uint32_t(
output_volume_ = int16_t(
volumes_[volumes[0]] * channel_levels[0] +
volumes_[volumes[1]] * channel_levels[1] +
volumes_[volumes[2]] * channel_levels[2]