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Assert that nobody calls IO::copy_to_output with empty bufs

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IO::copy_to_output() crashed if there was no channel to copy from. Since
all callers seem to check before calling, just assert() that it is not
the case.
This commit is contained in:
Julien "_FrnchFrgg_" RIVAUD 2016-07-09 00:19:44 +02:00
parent ac923be7af
commit d6534eb143
1 changed files with 4 additions and 2 deletions
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6
libs/ardour/io.cc
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@ -1721,12 +1721,14 @@ IO::collect_input (BufferSet& bufs, pframes_t nframes, ChanCount offset)
void
IO::copy_to_outputs (BufferSet& bufs, DataType type, pframes_t nframes, framecnt_t offset)
{
// Copy any buffers 1:1 to outputs
PortSet::iterator o = _ports.begin(type);
BufferSet::iterator i = bufs.begin(type);
BufferSet::iterator prev = i;
assert(i != bufs.end(type)); // or second loop will crash
// Copy any buffers 1:1 to outputs
while (i != bufs.end(type) && o != _ports.end (type)) {
Buffer& port_buffer (o->get_buffer (nframes));
port_buffer.read_from (*i, nframes, offset);