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dsptool: refactor

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a dinosaur
2023-03-19 09:58:26 +11:00
parent ac89564669
commit 99bf061438
9 changed files with 848 additions and 804 deletions
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69
dsptools/libdsptool/math.c Normal file
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/* (c) 2017 Alex Barney (MIT) */
#include "dsptool.h"
uint32_t getBytesForAdpcmBuffer(uint32_t samples)
{
uint32_t frames = samples / SAMPLES_PER_FRAME;
if (samples % SAMPLES_PER_FRAME)
frames++;
return frames * BYTES_PER_FRAME;
}
uint32_t getBytesForAdpcmInfo(void)
{
return sizeof(ADPCMINFO);
}
uint32_t getBytesForAdpcmSamples(uint32_t samples)
{
uint32_t extraBytes = 0;
uint32_t frames = samples / SAMPLES_PER_FRAME;
uint32_t extraSamples = samples % SAMPLES_PER_FRAME;
if (extraSamples)
extraBytes = (extraSamples / 2) + (extraSamples % 2) + 1;
return BYTES_PER_FRAME * frames + extraBytes;
}
uint32_t getBytesForPcmBuffer(uint32_t samples)
{
uint32_t frames = samples / SAMPLES_PER_FRAME;
if (samples % SAMPLES_PER_FRAME)
frames++;
return frames * SAMPLES_PER_FRAME * sizeof(int16_t);
}
uint32_t getBytesForPcmSamples(uint32_t samples)
{
return samples * sizeof(int16_t);
}
uint32_t getNibbleAddress(uint32_t samples)
{
uint32_t frames = samples / SAMPLES_PER_FRAME;
uint32_t extraSamples = samples - (frames * SAMPLES_PER_FRAME);
return NIBBLES_PER_FRAME * frames + extraSamples + 2;
}
uint32_t getNibblesForNSamples(uint32_t samples)
{
uint32_t frames = samples / SAMPLES_PER_FRAME;
uint32_t extraSamples = samples - (frames * SAMPLES_PER_FRAME);
uint32_t extraNibbles = extraSamples == 0 ? 0 : extraSamples + 2;
return NIBBLES_PER_FRAME * frames + extraNibbles;
}
uint32_t getSampleForAdpcmNibble(uint32_t nibble)
{
uint32_t frames = nibble / NIBBLES_PER_FRAME;
uint32_t extraNibbles = nibble - (frames * NIBBLES_PER_FRAME);
uint32_t samples = SAMPLES_PER_FRAME * frames;
return samples + extraNibbles - 2;
}