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Add API to AudioBackend for choosing between portaudio blocking or callback API

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This commit is contained in:
Tim Mayberry 2016-02-05 23:27:40 +10:00
parent d50a821374
commit 16835032ab
1 changed files with 17 additions and 0 deletions
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17
libs/ardour/ardour/audio_backend.h
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@ -258,6 +258,23 @@ class LIBARDOUR_API AudioBackend : public PortEngine {
*/
virtual bool update_devices () { return false; }
/**
* @return true if backend supports a blocking or buffered mode, false by
* default unless implemented by a derived class.
*/
virtual bool can_use_buffered_io () { return false; }
/**
* Set the backend to use a blocking or buffered I/O mode
*/
virtual void set_use_buffered_io (bool) { }
/**
* @return Set the backend to use a blocking or buffered I/O mode, false by
* default unless implemented by a derived class.
*/
virtual bool get_use_buffered_io () { return false; }
/** Returns a collection of float identifying sample rates that are
* potentially usable with the hardware identified by @param device.
* Any of these values may be supplied in other calls to this backend