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Ensure we always have at least 1 MIDI buffer

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git-svn-id: svn://localhost/ardour2/branches/3.0@10293 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
David Robillard 2011-10-23 20:28:20 +00:00
parent f44d19fc84
commit 040aef6cc3
1 changed files with 24 additions and 19 deletions
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43
libs/ardour/thread_buffers.cc
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@ -28,40 +28,45 @@ using namespace ARDOUR;
using namespace std;
ThreadBuffers::ThreadBuffers ()
: silent_buffers (new BufferSet)
, scratch_buffers (new BufferSet)
, mix_buffers (new BufferSet)
, gain_automation_buffer (0)
, pan_automation_buffer (0)
, npan_buffers (0)
: silent_buffers (new BufferSet)
, scratch_buffers (new BufferSet)
, mix_buffers (new BufferSet)
, gain_automation_buffer (0)
, pan_automation_buffer (0)
, npan_buffers (0)
{
}
void
ThreadBuffers::ensure_buffers (ChanCount howmany)
{
// std::cerr << "ThreadBuffers " << this << " resize buffers with count = " << howmany << std::endl;
// std::cerr << "ThreadBuffers " << this << " resize buffers with count = " << howmany << std::endl;
/* this is all protected by the process lock in the Session
*/
/* this is all protected by the process lock in the Session
*/
if (howmany.n_total() == 0) {
return;
}
/* we always need at least 1 midi buffer */
if (howmany.n_midi() < 1) {
howmany.set_midi(1);
}
AudioEngine* _engine = AudioEngine::instance ();
if (howmany.n_audio() == 0 && howmany.n_midi() == 1) {
return;
}
AudioEngine* _engine = AudioEngine::instance ();
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
size_t count = std::max (scratch_buffers->available().get(*t), howmany.get(*t));
size_t size = _engine->raw_buffer_size (*t);
size_t size = _engine->raw_buffer_size (*t);
scratch_buffers->ensure_buffers (*t, count, size);
mix_buffers->ensure_buffers (*t, count, size);
silent_buffers->ensure_buffers (*t, count, size);
silent_buffers->ensure_buffers (*t, count, size);
}
delete [] gain_automation_buffer;
gain_automation_buffer = new gain_t[_engine->raw_buffer_size (DataType::AUDIO)];
delete [] gain_automation_buffer;
gain_automation_buffer = new gain_t[_engine->raw_buffer_size (DataType::AUDIO)];
allocate_pan_automation_buffers (_engine->raw_buffer_size (DataType::AUDIO), howmany.n_audio(), false);
}
@ -69,9 +74,9 @@ ThreadBuffers::ensure_buffers (ChanCount howmany)
void
ThreadBuffers::allocate_pan_automation_buffers (framecnt_t nframes, uint32_t howmany, bool force)
{
/* we always need at least 2 pan buffers */
/* we always need at least 2 pan buffers */
howmany = max (2U, howmany);
howmany = max (2U, howmany);
if (!force && howmany <= npan_buffers) {
return;