Merge with trunk R2978.

git-svn-id: svn://localhost/ardour2/branches/3.0@2988 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 20 insertions, 0 deletions

diff --git a/libs/ardour/ardour/readable.h b/libs/ardour/ardour/readable.h
new file mode 100644
index 0000000000..e072a1c95e
--- /dev/null
+++ b/libs/ardour/ardour/readable.h
@@ -0,0 +1,20 @@
+#ifndef __ardour_readable_h__
+#define __ardour_readable_h__
+
+#include <ardour/types.h>
+
+namespace ARDOUR {
+
+class Readable {
+  public:
+	Readable () {}
+	virtual ~Readable() {}
+
+	virtual nframes64_t read (Sample*, nframes64_t pos, nframes64_t cnt, int channel) const = 0;
+	virtual nframes64_t readable_length() const = 0;
+	virtual uint32_t    n_channels () const = 0;
+};
+
+}
+
+#endif /* __ardour_readable_h__ */