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#include "Z2AudioCS/SpkMixingBuffer.h"
#include "Z2AudioCS/SpkSound.h"
#include "JSystem/JAudio2/JASCalc.h"
#include "JSystem/JAudio2/JASGadget.h"
#include "JSystem/JAudio2/JASHeapCtrl.h"
SpkMixingBuffer::SpkMixingBuffer(JKRHeap* heap) {
JUT_ASSERT(25, heap);
for (s32 chan = 0; chan < ARRAY_SIZE(mBuffer); chan++) {
mBuffer[chan] = new (heap, 0) s16[cSamplesPerAudioPacket];
JUT_ASSERT(29, mBuffer[chan]);
bzeroBuffer(chan);
}
}
void SpkMixingBuffer::mix(s32 chan, s16* src, s32 len, f32 weight,
s32 offset) {
JUT_ASSERT(61, chan < 4);
JUT_ASSERT(62, mBuffer[chan]);
JUT_ASSERT(63, src);
JUT_ASSERT(64, offset >= 0);
JUT_ASSERT(65, (offset+len) <= cSamplesPerAudioPacket);
for (s32 i = 0; i < len; i++) {
s32 sample = mBuffer[chan][i + offset];
s16 srcSample = src[i];
sample += (s32)(srcSample * weight);
mBuffer[chan][i + offset] = JASCalc::clamp<s16, s32>(sample);
}
}
s16* SpkMixingBuffer::getSamples(s32 chan) const {
JUT_ASSERT(97, chan < 4);
JUT_ASSERT(98, mBuffer[chan]);
return mBuffer[chan];
}
bool SpkMixingBuffer::update(s32 chan) {
bzeroBuffer(chan);
SpkSoundHolder* sound_holder = JASGlobalInstance<SpkSoundHolder>::getInstance();
JUT_ASSERT(121, sound_holder);
bool result = sound_holder->update(chan);
return result;
}
void SpkMixingBuffer::bzeroBuffer(s32 chan) {
JUT_ASSERT(143, chan < 4);
JUT_ASSERT(144, mBuffer[chan]);
JASCalc::bzero(mBuffer[chan], cSamplesPerAudioPacket * sizeof(s16));
}
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