void Echo::PositionChanged()
{
m_bufferSize = m_sampleRate * 2u;
try
{
m_delayLine.assign(m_bufferSize * 2, 0);
} MPT_EXCEPTION_CATCH_OUT_OF_MEMORY(e)
{
MPT_EXCEPTION_DELETE_OUT_OF_MEMORY(e);
m_bufferSize = 0;
}
m_writePos = 0;
}
void Echo::Resume()
//-----------------
{
m_isResumed = true;
m_sampleRate = m_SndFile.GetSampleRate();
m_bufferSize = m_sampleRate * 2u;
RecalculateEchoParams();
try
{
m_delayLine.assign(m_bufferSize * 2, 0);
} MPT_EXCEPTION_CATCH_OUT_OF_MEMORY(e)
{
MPT_EXCEPTION_DELETE_OUT_OF_MEMORY(e);
m_bufferSize = 0;
}
m_writePos = 0;
}
static bool StringToEnvelope(const std::string &s, InstrumentEnvelope &env, const CModSpecifications &specs)
//----------------------------------------------------------------------------------------------------------
{
uint32 susBegin = 0, susEnd = 0, loopBegin = 0, loopEnd = 0, bSus = 0, bLoop = 0, bCarry = 0, nPoints = 0, releaseNode = ENV_RELEASE_NODE_UNSET;
size_t length = s.size(), pos = strlen(pszEnvHdr);
if(length <= pos || mpt::CompareNoCaseAscii(s.c_str(), pszEnvHdr, pos - 2))
{
return false;
}
sscanf(&s[pos], pszEnvFmt, &nPoints, &susBegin, &susEnd, &loopBegin, &loopEnd, &bSus, &bLoop, &bCarry);
while (pos < length && s[pos] != '\r' && s[pos] != '\n') pos++;
nPoints = MIN(nPoints, specs.envelopePointsMax);
if (susEnd >= nPoints) susEnd = 0;
if (susBegin > susEnd) susBegin = susEnd;
if (loopEnd >= nPoints) loopEnd = 0;
if (loopBegin > loopEnd) loopBegin = loopEnd;
try
{
env.resize(nPoints);
} MPT_EXCEPTION_CATCH_OUT_OF_MEMORY(e)
{
MPT_EXCEPTION_DELETE_OUT_OF_MEMORY(e);
return false;
}
env.nSustainStart = susBegin;
env.nSustainEnd = susEnd;
env.nLoopStart = loopBegin;
env.nLoopEnd = loopEnd;
env.nReleaseNode = releaseNode;
env.dwFlags.set(ENV_LOOP, bLoop != 0);
env.dwFlags.set(ENV_SUSTAIN, bSus != 0);
env.dwFlags.set(ENV_CARRY, bCarry != 0);
env.dwFlags.set(ENV_ENABLED, nPoints > 0);
int oldn = 0;
for(auto &p : env)
{
while (pos < length && (s[pos] < '0' || s[pos] > '9')) pos++;
if (pos >= length) break;
int n1 = atoi(&s[pos]);
while (pos < length && s[pos] != ',') pos++;
while (pos < length && (s[pos] < '0' || s[pos] > '9')) pos++;
if (pos >= length) break;
int n2 = atoi(&s[pos]);
if (n1 < oldn) n1 = oldn + 1;
Limit(n2, ENVELOPE_MIN, ENVELOPE_MAX);
p.tick = (uint16)n1;
p.value = (uint8)n2;
oldn = n1;
while (pos < length && s[pos] != '\r' && s[pos] != '\n') pos++;
if (pos >= length) break;
}
env.Sanitize();
// Read release node information.
env.nReleaseNode = ENV_RELEASE_NODE_UNSET;
if(pos < length)
{
uint8 r = static_cast<uint8>(atoi(&s[pos]));
if(r == 0 || r >= nPoints || !specs.hasReleaseNode)
r = ENV_RELEASE_NODE_UNSET;
env.nReleaseNode = r;
}
return true;
}
