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Optimize stem and direct-out export

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This commit is contained in:
Robin Gareus 2020-11-20 20:14:52 +01:00
parent a1f40979bd
commit a529122249
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
1 changed files with 11 additions and 5 deletions
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16
libs/ardour/export_channel.cc
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@ -120,12 +120,18 @@ PortExportChannel::read (Sample const *& data, samplecnt_t samples) const
Sample* port_buffer = ab.data(); Sample* port_buffer = ab.data();
ab.set_written (true); ab.set_written (true);
(*di)->write (port_buffer, samples); (*di)->write (port_buffer, samples);
// TODO optimze, get_read_vector()
for (uint32_t i = 0; i < samples; ++i) { PBD::RingBuffer<Sample>::rw_vector vec;
Sample spl; (*di)->get_read_vector (&vec);
(*di)->read (&spl, 1); assert (vec.len[0] + vec.len[1] >= samples);
_buffer[i] += spl;
samplecnt_t to_write = std::min (samples, (samplecnt_t) vec.len[0]);
mix_buffers_no_gain (&_buffer[0], vec.buf[0], to_write);
to_write = std::min (to_write - samples, (samplecnt_t) vec.len[1]);
if (to_write > 0) {
mix_buffers_no_gain (&_buffer[vec.len[0]], vec.buf[1], to_write);
} }
++di; ++di;
} }