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Actually use the new first methods

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This commit is contained in:
Gwilym Inzani 2023-06-27 22:34:45 +01:00
parent 3b35061a3a
commit 13f5fe01d7
2 changed files with 36 additions and 5 deletions
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4
agb/src/sound/mixer/mixer.s
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@ -35,7 +35,7 @@ agb_arm_func \fn_name
ldrsb r6, [r4] @ load the current sound sample to r6
add r5, r5, r2 @ calculate the position to read the next sample from
.ifc is_first,true
.ifc \is_first,true
mul r4, r6, r7 @ r4 = r6 * r7 (calculating both the left and right samples together)
.else
ldr r4, [r1] @ read the current value
@ -82,7 +82,7 @@ agb_arm_func \fn_name
lsl r6, r6, #16
orr r6, r6, lsr #16
.ifc is_first,true
.ifc \is_first,true
mov r4, r6, lsl r3 @ r4 = r6 << r3
.else
ldr r4, [r1] @ read the current value

37
agb/src/sound/mixer/sw_mixer.rs
View file

@ -420,9 +420,7 @@ impl MixerBuffer {
working_buffer: &mut [Num<i16, 4>],
channels: impl Iterator<Item = &'a mut SoundChannel>,
) {
working_buffer.fill(0.into());
let channels = channels
let mut channels = channels
.filter(|channel| !channel.is_done)
.filter_map(|channel| {
let playback_speed = if channel.is_stereo {
@ -446,6 +444,39 @@ impl MixerBuffer {
Some((channel, playback_speed))
});
if let Some((channel, playback_speed)) = channels.next() {
if channel.volume != 0.into() {
if channel.is_stereo {
unsafe {
agb_rs__mixer_add_stereo_first(
channel.data.as_ptr().add(channel.pos.floor() as usize),
working_buffer.as_mut_ptr(),
channel.volume,
);
}
} else {
let right_amount = ((channel.panning + 1) / 2) * channel.volume;
let left_amount = ((-channel.panning + 1) / 2) * channel.volume;
unsafe {
agb_rs__mixer_add_first(
channel.data.as_ptr().add(channel.pos.floor() as usize),
working_buffer.as_mut_ptr(),
playback_speed,
left_amount,
right_amount,
);
}
}
} else {
working_buffer.fill(0.into());
}
channel.pos += playback_speed * self.frequency.buffer_size() as u32;
} else {
working_buffer.fill(0.into());
}
for (channel, playback_speed) in channels {
if channel.volume != 0.into() {
if channel.is_stereo {