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36 lines
989 B
36 lines
989 B
7 years ago
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/*
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* LibBasicFunctions.cpp
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*
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* Created on: Dec 23, 2017
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* Author: slascos
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*/
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#include "LibBasicFunctions.h"
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namespace BAGuitar {
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void updateAudioMemorySlot(BASpiMemory *mem, MemSlot slot, audio_block_t *block)
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{
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if (block) {
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if (slot.currentPosition + AUDIO_BLOCK_SAMPLES-1 <= slot.end) {
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// entire block fits in memory slot without wrapping
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mem->write16(slot.currentPosition, (uint16_t *)block->data, AUDIO_BLOCK_SAMPLES); // cast audio data to uint.
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} else {
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// this write will wrap the memory slot
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size_t numBytes = slot.end - slot.currentPosition + 1;
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mem->write16(slot.currentPosition, (uint16_t *)block->data, numBytes);
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size_t remainingBytes = AUDIO_BLOCK_SAMPLES - numBytes; // calculate the remaining bytes
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mem->write16(slot.start, (uint16_t *)block->data + numBytes, remainingBytes); // write remaining bytes are start
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}
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}
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}
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void zeroMemorySlot(BASpiMemory *mem, MemSlot slot)
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{
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mem->zero16(slot.start, slot.end-slot.start+1);
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}
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}
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