Signalsmith-Audio/signalsmith-stretch
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Log memory use (Mac) and check output

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Geraint 2024-03-19 07:12:47 +00:00 committed by Geraint Luff
parent 9bffc80ec8
commit 026622300e
1 changed files with 28 additions and 0 deletions
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28
cmd/main.cpp
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@ -6,6 +6,7 @@
#include "../signalsmith-stretch.h"
#include "util/simple-args.h"
#include "util/wav.h"
#include "util/memory-tracker.h"
int main(int argc, char* argv[]) {
SimpleArgs args(argc, argv);
@ -23,15 +24,24 @@ int main(int argc, char* argv[]) {
if (!inWav.read(inputWav).warn()) args.errorExit("failed to read WAV");
size_t inputLength = inWav.samples.size()/inWav.channels;
Wav prevWav;
prevWav.read(outputWav); // to verify it's the same output
Wav outWav;
outWav.channels = inWav.channels;
outWav.sampleRate = inWav.sampleRate;
int outputLength = std::round(inputLength*time);
signalsmith::MemoryTracker memory;
// Use cheap RNG for comparison
signalsmith::stretch::SignalsmithStretch<float, std::mt19937> stretch;
stretch.presetDefault(inWav.channels, inWav.sampleRate);
stretch.setTransposeSemitones(semitones, tonality/inWav.sampleRate);
memory = memory.diff();
std::cout << "Setup (alloc/free/current):\t" << memory.allocBytes << "/" << memory.freeBytes << "/" << memory.currentBytes << "\n";
// pad the input at the end, since we'll be reading slightly ahead
size_t paddedInputLength = inputLength + stretch.inputLatency();
inWav.samples.resize(paddedInputLength*inWav.channels);
@ -40,6 +50,7 @@ int main(int argc, char* argv[]) {
int paddedOutputLength = outputLength + tailSamples;
outWav.samples.resize(paddedOutputLength*outWav.channels);
signalsmith::MemoryTracker processMemory;
// The simplest way to deal with input latency is to always be slightly ahead in the input
stretch.seek(inWav, stretch.inputLatency(), 1/time);
@ -49,6 +60,9 @@ int main(int argc, char* argv[]) {
// These lengths in the right ratio to get the time-stretch
stretch.process(inWav, inputLength, outWav, outputLength);
processMemory = processMemory.diff();
std::cout << "Processing (alloc/free/current):\t" << processMemory.allocBytes << "/" << processMemory.freeBytes << "/" << processMemory.currentBytes << "\n";
// Read the last bit of output without giving it any more input
outWav.offset += outputLength;
stretch.flush(outWav, tailSamples);
@ -69,4 +83,18 @@ int main(int argc, char* argv[]) {
}
if (!outWav.write(outputWav).warn()) args.errorExit("failed to write WAV");
if (prevWav.result) {
outWav.read(outputWav);
if (prevWav.length() != outWav.length()) args.errorExit("lengths differ");
double diff2 = 0;
for (size_t i = 0; i < prevWav.samples.size(); ++i) {
double diff = prevWav.samples[i] - outWav.samples[i];
diff2 += diff*diff;
}
diff2 /= prevWav.samples.size();
double diffDb = 10*std::log10(diff2);
LOG_EXPR(diffDb);
if (diffDb > -60) args.errorExit("too much difference");
}
}