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ggwave : resampling fixes

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The old output resampling was bugged and produced cracking in the audio
when the output sampling rate was different from the base sampling rate.

Additionally, the decoding wasn't properly handling resampled input in all
cases.
This commit is contained in:
Georgi Gerganov
2021-02-21 00:16:43 +02:00
parent f4fb02d5d4
commit 62b71c3322
3 changed files with 67 additions and 67 deletions
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8
tests/test-ggwave.cpp
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@@ -190,7 +190,9 @@ int main(int argc, char ** argv) {
}
// playback / capture at different sample rates
for (int srInp = GGWave::kBaseSampleRate/3; srInp <= 2*GGWave::kBaseSampleRate; srInp += 1100) {
for (int srInp = GGWave::kBaseSampleRate/6; srInp <= 2*GGWave::kBaseSampleRate; srInp += 1371) {
printf("Testing: sample rate = %d\n", srInp);
auto parameters = GGWave::getDefaultParameters();
parameters.soundMarkerThreshold = 1.1f;
@@ -201,7 +203,7 @@ int main(int argc, char ** argv) {
parameters.sampleRateOut = srInp;
GGWave instanceOut(parameters);
instanceOut.init(payload, 25);
instanceOut.init(payload, instanceOut.getTxProtocol(GGWAVE_TX_PROTOCOL_DT_FASTEST), 25);
auto expectedSize = instanceOut.encodeSize_samples();
instanceOut.encode(kCBWaveformOut.at(parameters.sampleFormatOut));
printf("Expected = %d, actual = %d\n", expectedSize, nSamples);
@@ -214,7 +216,7 @@ int main(int argc, char ** argv) {
parameters.sampleRateInp = srInp;
GGWave instanceInp(parameters);
instanceInp.setRxProtocols({{instanceInp.getDefaultTxProtocolId(), instanceInp.getDefaultTxProtocol()}});
instanceInp.setRxProtocols({{GGWAVE_TX_PROTOCOL_DT_FASTEST, instanceInp.getTxProtocol(GGWAVE_TX_PROTOCOL_DT_FASTEST)}});
instanceInp.decode(kCBWaveformInp.at(parameters.sampleFormatInp));
GGWave::TxRxData result;