X-Git-Url: http://git.tdb.fi/?p=libs%2Fal.git;a=blobdiff_plain;f=source%2Fformat.cpp;fp=source%2Fformat.cpp;h=1cb5b23e6ae921807b7c2a6b6c0acb1d4e9b38e1;hp=0000000000000000000000000000000000000000;hb=227da1e7a20432e056e7ab42444cb56f197c53d6;hpb=7961a6bc2a735d08a5d1ffeb6772ec3d545cb98c

diff --git a/source/format.cpp b/source/format.cpp
new file mode 100644
index 0000000..1cb5b23
--- /dev/null
+++ b/source/format.cpp
@@ -0,0 +1,59 @@
+#include <stdexcept>
+#include "format.h"
+
+using namespace std;
+
+namespace Msp {
+namespace AL {
+
+Format create_format(unsigned sample_size, unsigned n_channels)
+{
+	if(n_channels==1)
+	{
+		if(sample_size==1)
+			return MONO8;
+		else if(sample_size==2)
+			return MONO16;
+	}
+	else if(n_channels==2)
+	{
+		if(sample_size==1)
+			return STEREO8;
+		else if(sample_size==2)
+			return STEREO16;
+	}
+
+	throw invalid_argument("create_format");
+}
+
+unsigned get_sample_size(Format fmt)
+{
+	switch(fmt)
+	{
+	case MONO8:
+	case STEREO8: return 1;
+	case MONO16:
+	case STEREO16: return 2;
+	default: throw invalid_argument("get_sample_size");
+	}
+}
+
+unsigned get_n_channels(Format fmt)
+{
+	switch(fmt)
+	{
+	case MONO8:
+	case MONO16: return 1;
+	case STEREO8:
+	case STEREO16: return 2;
+	default: throw invalid_argument("get_n_channels");
+	}
+}
+
+unsigned get_unit_size(Format fmt)
+{
+	return get_sample_size(fmt)*get_n_channels(fmt);
+}
+
+} // namespace AL
+} // namespace Msp