audio: Initial bits to enable audio capture support.

test/Makefile.in

@@ -13,6 +13,7 @@ TARGETS = \
 	loopwavequeue$(EXE) \
 	testatomic$(EXE) \
 	testaudioinfo$(EXE) \
+	testaudiocapture$(EXE) \
 	testautomation$(EXE) \
 	testbounds$(EXE) \
 	testcustomcursor$(EXE) \
@@ -113,6 +114,9 @@ testmultiaudio$(EXE): $(srcdir)/testmultiaudio.c
 testaudiohotplug$(EXE): $(srcdir)/testaudiohotplug.c
 	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
 
+testaudiocapture$(EXE): $(srcdir)/testaudiocapture.c
+	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
+
 testatomic$(EXE): $(srcdir)/testatomic.c
 	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)