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Fix buffer underrun in case where rounded sample count accumulator exceeds length

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This commit is contained in:
Chris Cannam
2020-10-22 13:55:50 +01:00
parent c4ad5b6f4a
commit cce7bdd703
1 changed files with 69 additions and 33 deletions
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98
src/dsp/Resampler.cpp
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@@ -215,7 +215,7 @@ D_IPP::D_IPP(Resampler::Quality quality, int channels, double initialSampleRate,
setBufSize(maxBufferSize + m_history);
if (m_debugLevel > 1) {
cerr << "bufsize = " << m_bufsize << ", window = " << m_window << ", nStep = " << nStep << ", history = " << m_history << endl;
cerr << "D_IPP: bufsize = " << m_bufsize << ", window = " << m_window << ", nStep = " << nStep << ", history = " << m_history << endl;
}
#if (IPP_VERSION_MAJOR >= 7)
@@ -249,6 +249,11 @@ D_IPP::D_IPP(Resampler::Quality quality, int channels, double initialSampleRate,
9.0f,
m_state[c],
hint);
if (m_debugLevel > 1) {
cerr << "D_IPP: Resampler state size = " << specSize << ", allocated at "
<< m_state[c] << endl;
}
#endif
m_lastread[c] = m_history;
@@ -256,7 +261,7 @@ D_IPP::D_IPP(Resampler::Quality quality, int channels, double initialSampleRate,
}
if (m_debugLevel > 1) {
cerr << "Resampler init done" << endl;
cerr << "D_IPP: Resampler init done" << endl;
}
}
@@ -285,9 +290,9 @@ D_IPP::setBufSize(int sz)
{
if (m_debugLevel > 1) {
if (m_bufsize > 0) {
cerr << "resize bufsize " << m_bufsize << " -> ";
cerr << "D_IPP: resize bufsize " << m_bufsize << " -> ";
} else {
cerr << "initialise bufsize to ";
cerr << "D_IPP: initialise bufsize to ";
}
}
@@ -300,13 +305,13 @@ D_IPP::setBufSize(int sz)
int n1 = m_bufsize + m_history + 2;
if (m_debugLevel > 1) {
cerr << "inbuf allocating " << m_bufsize << " + " << m_history << " + 2 = " << n1 << endl;
cerr << "D_IPP: inbuf allocating " << m_bufsize << " + " << m_history << " + 2 = " << n1 << endl;
}
int n2 = (int)lrintf(ceil((m_bufsize - m_history) * m_factor + 2));
if (m_debugLevel > 1) {
cerr << "outbuf allocating (" << m_bufsize << " - " << m_history << ") * " << m_factor << " + 2 = " << n2 << endl;
cerr << "D_IPP: outbuf allocating (" << m_bufsize << " - " << m_history << ") * " << m_factor << " + 2 = " << n2 << endl;
}
m_inbuf = reallocate_and_zero_extend_channels
@@ -317,6 +322,21 @@ D_IPP::setBufSize(int sz)
m_inbufsz = n1;
m_outbufsz = n2;
if (m_debugLevel > 2) {
cerr << "D_IPP: inbuf ptr = " << m_inbuf << ", channel inbufs ";
for (int c = 0; c < m_channels; ++c) {
cerr << m_inbuf[c] << " ";
}
cerr << "at " << m_inbufsz * sizeof(float) << " bytes each" << endl;
cerr << "D_IPP: outbuf ptr = " << m_outbuf << ", channel outbufs ";
for (int c = 0; c < m_channels; ++c) {
cerr << m_outbuf[c] << " ";
}
cerr << "at " << m_outbufsz * sizeof(float) << " bytes each" << endl;
}
}
int
@@ -333,7 +353,7 @@ D_IPP::resample(float *const R__ *const R__ out,
}
if (m_debugLevel > 2) {
cerr << "incount = " << incount << ", ratio = " << ratio << ", est space = " << lrintf(ceil(incount * ratio)) << ", outspace = " << outspace << ", final = " << final << endl;
cerr << "D_IPP: incount = " << incount << ", ratio = " << ratio << ", est space = " << lrintf(ceil(incount * ratio)) << ", outspace = " << outspace << ", final = " << final << endl;
}
for (int c = 0; c < m_channels; ++c) {
@@ -350,7 +370,7 @@ D_IPP::resample(float *const R__ *const R__ out,
}
if (m_debugLevel > 2) {
cerr << "lastread advanced to " << m_lastread[0] << endl;
cerr << "D_IPP: lastread advanced to " << m_lastread[0] << endl;
}
int got = doResample(outspace, ratio, final);
@@ -376,7 +396,7 @@ D_IPP::resampleInterleaved(float *const R__ out,
}
if (m_debugLevel > 2) {
cerr << "incount = " << incount << ", ratio = " << ratio << ", est space = " << lrintf(ceil(incount * ratio)) << ", outspace = " << outspace << ", final = " << final << endl;
cerr << "D_IPP: incount = " << incount << ", ratio = " << ratio << ", est space = " << lrintf(ceil(incount * ratio)) << ", outspace = " << outspace << ", final = " << final << endl;
}
for (int c = 0; c < m_channels; ++c) {
@@ -393,7 +413,7 @@ D_IPP::resampleInterleaved(float *const R__ out,
}
if (m_debugLevel > 2) {
cerr << "lastread advanced to " << m_lastread[0] << " after injection of "
cerr << "D_IPP: lastread advanced to " << m_lastread[0] << " after injection of "
<< incount << " samples" << endl;
}
@@ -414,20 +434,20 @@ D_IPP::doResample(int outspace, double ratio, bool final)
int n = m_lastread[c] - m_history - int(m_time[c]);
if (c == 0 && m_debugLevel > 2) {
cerr << "at start, lastread = " << m_lastread[c] << ", history = "
cerr << "D_IPP: at start, lastread = " << m_lastread[c] << ", history = "
<< m_history << ", time = " << m_time[c] << ", therefore n = "
<< n << endl;
}
if (n <= 0) {
if (c == 0 && m_debugLevel > 1) {
cerr << "not enough input samples to do anything" << endl;
cerr << "D_IPP: not enough input samples to do anything" << endl;
}
continue;
}
if (c == 0 && m_debugLevel > 2) {
cerr << "before resample call, time = " << m_time[c] << endl;
cerr << "D_IPP: before resample call, time = " << m_time[c] << endl;
}
// We're committed to not overrunning outspace, so we need to
@@ -436,7 +456,7 @@ D_IPP::doResample(int outspace, double ratio, bool final)
int limit = int(floor(outspace / ratio));
if (n > limit) {
if (c == 0 && m_debugLevel > 1) {
cerr << "trimming input samples from " << n << " to " << limit
cerr << "D_IPP: trimming input samples from " << n << " to " << limit
<< " to avoid overrunning " << outspace << " at output"
<< endl;
}
@@ -463,25 +483,41 @@ D_IPP::doResample(int outspace, double ratio, bool final)
m_state[c]);
#endif
int t = int(round(m_time[c]));
int t = int(floor(m_time[c]));
int moveFrom = t - m_history;
if (c == 0 && m_debugLevel > 2) {
cerr << "converted " << n << " samples to " << outcount
<< ", time advanced to " << t << endl;
cerr << "will move " << m_lastread[c] + m_history - t
<< " unconverted samples back from index " << t - m_history
cerr << "D_IPP: converted " << n << " samples to " << outcount
<< " (nb outbufsz = " << m_outbufsz
<< "), time advanced to " << m_time[c] << endl;
cerr << "D_IPP: rounding time to " << t << ", lastread = "
<< m_lastread[c] << ", history = " << m_history << endl;
cerr << "D_IPP: will move " << m_lastread[c] - moveFrom
<< " unconverted samples back from index " << moveFrom
<< " to 0" << endl;
}
v_move(m_inbuf[c],
m_inbuf[c] + t - m_history,
m_lastread[c] + m_history - t);
if (moveFrom >= m_lastread[c]) {
m_lastread[c] -= t - m_history;
m_time[c] -= t - m_history;
moveFrom = m_lastread[c];
if (c == 0 && m_debugLevel > 2) {
cerr << "lastread reduced to " << m_lastread[c]
cerr << "D_IPP: number of samples to move is <= 0, "
<< "not actually moving any" << endl;
}
} else {
v_move(m_inbuf[c],
m_inbuf[c] + moveFrom,
m_lastread[c] - moveFrom);
}
m_lastread[c] -= moveFrom;
m_time[c] -= moveFrom;
if (c == 0 && m_debugLevel > 2) {
cerr << "D_IPP: lastread reduced to " << m_lastread[c]
<< ", time reduced to " << m_time[c]
<< endl;
}
@@ -500,7 +536,7 @@ D_IPP::doResample(int outspace, double ratio, bool final)
int additionalcount = 0;
if (c == 0 && m_debugLevel > 2) {
cerr << "final call, padding input with " << m_history
cerr << "D_IPP: final call, padding input with " << m_history
<< " zeros (symmetrical with m_history)" << endl;
}
@@ -509,14 +545,14 @@ D_IPP::doResample(int outspace, double ratio, bool final)
}
if (c == 0 && m_debugLevel > 2) {
cerr << "before resample call, time = " << m_time[c] << endl;
cerr << "D_IPP: before resample call, time = " << m_time[c] << endl;
}
int nAdditional = m_lastread[c] - int(m_time[c]);
if (n + nAdditional > limit) {
if (c == 0 && m_debugLevel > 1) {
cerr << "trimming final input samples from " << nAdditional
cerr << "D_IPP: trimming final input samples from " << nAdditional
<< " to " << (limit - n)
<< " to avoid overrunning " << outspace << " at output"
<< endl;
@@ -545,9 +581,9 @@ D_IPP::doResample(int outspace, double ratio, bool final)
#endif
if (c == 0 && m_debugLevel > 2) {
cerr << "converted " << n << " samples to " << additionalcount
cerr << "D_IPP: converted " << n << " samples to " << additionalcount
<< ", time advanced to " << m_time[c] << endl;
cerr << "outcount = " << outcount << ", additionalcount = " << additionalcount << ", sum " << outcount + additionalcount << endl;
cerr << "D_IPP: outcount = " << outcount << ", additionalcount = " << additionalcount << ", sum " << outcount + additionalcount << endl;
}
if (c == 0) {
@@ -557,7 +593,7 @@ D_IPP::doResample(int outspace, double ratio, bool final)
}
if (m_debugLevel > 2) {
cerr << "returning " << outcount << " samples" << endl;
cerr << "D_IPP: returning " << outcount << " samples" << endl;
}
return outcount;