Uint64 SoundFileReaderWav::read(Int16* samples, Uint64 maxCount)
{
assert(m_stream);
Uint64 count = 0;
Uint64 startPos = m_stream->tell();
// Tracking of m_dataEnd is important to prevent sf::Music from reading
// data until EOF, as WAV files may have metadata at the end.
while ((count < maxCount) && (startPos + count * m_bytesPerSample < m_dataEnd))
{
switch (m_bytesPerSample)
{
case 1:
{
Uint8 sample = 0;
if (decode(*m_stream, sample))
*samples++ = (static_cast<Int16>(sample) - 128) << 8;
else
return count;
break;
}
case 2:
{
Int16 sample = 0;
if (decode(*m_stream, sample))
*samples++ = sample;
else
return count;
break;
}
case 3:
{
Uint32 sample = 0;
if (decode24bit(*m_stream, sample))
*samples++ = sample >> 8;
else
return count;
break;
}
case 4:
{
Uint32 sample = 0;
if (decode(*m_stream, sample))
*samples++ = sample >> 16;
else
return count;
break;
}
default:
{
assert(false);
return 0;
}
}
Uint64 SoundFileReaderWav::read(Int16* samples, Uint64 maxCount)
{
assert(m_stream);
Uint64 count = 0;
while ((count < maxCount) && (m_stream->tell() < m_dataEnd))
{
switch (m_bytesPerSample)
{
case 1:
{
Uint8 sample = 0;
if (decode(*m_stream, sample))
*samples++ = (static_cast<Int16>(sample) - 128) << 8;
else
return count;
break;
}
case 2:
{
Int16 sample = 0;
if (decode(*m_stream, sample))
*samples++ = sample;
else
return count;
break;
}
case 3:
{
Uint32 sample = 0;
if (decode24bit(*m_stream, sample))
*samples++ = sample >> 8;
else
return count;
break;
}
case 4:
{
Uint32 sample = 0;
if (decode(*m_stream, sample))
*samples++ = sample >> 16;
else
return count;
break;
}
default:
{
assert(false);
return 0;
}
}