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-rw-r--r--src/audiooutputengine.h45
1 files changed, 23 insertions, 22 deletions
diff --git a/src/audiooutputengine.h b/src/audiooutputengine.h
index df8b0ee..338b5cd 100644
--- a/src/audiooutputengine.h
+++ b/src/audiooutputengine.h
@@ -24,39 +24,40 @@
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
-#ifndef __DRUMGIZMO_AUDIOOUTPUTENGINE_H__
-#define __DRUMGIZMO_AUDIOOUTPUTENGINE_H__
+#pragma once
+#include <cstddef>
#include <string>
-#include <stdlib.h>
+
#include <audiotypes.h>
#include "channel.h"
-class AudioOutputEngine {
+class AudioOutputEngine
+{
public:
- virtual ~AudioOutputEngine() {}
+ virtual ~AudioOutputEngine() = default;
- virtual bool init(const Channels& channels) = 0;
+ virtual bool init(const Channels& channels) = 0;
- virtual void setParm(const std::string& parm, const std::string& value) = 0;
+ virtual void setParm(const std::string& parm, const std::string& value) = 0;
- virtual bool start() = 0;
- virtual void stop() = 0;
+ virtual bool start() = 0;
+ virtual void stop() = 0;
- virtual void pre(size_t nsamples) = 0;
- virtual void run(int ch, sample_t *samples, size_t nsamples) = 0;
- virtual void post(size_t nsamples) = 0;
+ virtual void pre(std::size_t nsamples) = 0;
+ virtual void run(int ch, sample_t *samples, std::size_t nsamples) = 0;
+ virtual void post(std::size_t nsamples) = 0;
- // Reimplement this if you wish to use internal buffer directly.
- virtual sample_t *getBuffer(int ch) const { return NULL; }
+ //! Overload this method to use internal buffer directly.
+ virtual sample_t *getBuffer(int ch) const { return NULL; }
- /*
- * Overload this method to force engine to use different buffer size.
- */
- virtual size_t getBufferSize() const { return 1024; }
-
- virtual size_t getSamplerate() const { return 44100; }
-};
+ //! Overload this method to force engine to use different buffer size.
+ virtual std::size_t getBufferSize() const { return 1024; }
-#endif/*__DRUMGIZMO_AUDIOOUTPUTENGINE_H__*/
+ virtual std::size_t getSamplerate() const { return 44100; }
+
+ //! Overload this method to get notification of latency changes.
+ //! \param latency The new latency in samples.
+ virtual void onLatencyChange(std::size_t latency) {}
+};