core.Voice: add param support

Author: swistakm

examples/voice_params.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# -*- coding: utf-8 -*-
+from pyrilla import core
+
+from base import main, update_till_interrupt
+
+again = 0
+
+def file_handle(filename, ext):
+    sound = core.Sound(filename, ext)
+    voice = core.Voice(sound, loop=True)
+
+    voice.play()
+    voice.pitch = 1.5
+    voice.pan = -.5
+    voice.gain = .5
+
+    print("pitch: %5.1f" % voice.pitch)
+    print("pan:   %5.1f" % voice.pan)
+    print("gain:  %5.1f" % voice.gain)
+
+    update_till_interrupt()
+
+
+if __name__ == "__main__":
+    main(file_handle)

extensions/core.pyx

@@ -110,6 +110,36 @@ cdef class Voice(object):
         else:
             self.play()
 
+    property pitch:
+        def __get__(self):
+            cdef ga.float32 value
+
+            ga.handle_getParamf(self.handle, ga.HANDLE_PARAM_PITCH, &value)
+            return value
+
+        def __set__(self, ga.float32 value):
+            ga.handle_setParamf(self.handle, ga.HANDLE_PARAM_PITCH, value)
+
+    property gain:
+        def __get__(self):
+            cdef ga.float32 value
+
+            ga.handle_getParamf(self.handle, ga.HANDLE_PARAM_GAIN, &value)
+            return value
+
+        def __set__(self, ga.float32 value):
+            ga.handle_setParamf(self.handle, ga.HANDLE_PARAM_GAIN, value)
+
+    property pan:
+        def __get__(self):
+            cdef ga.float32 value
+
+            ga.handle_getParamf(self.handle, ga.HANDLE_PARAM_PAN, &value)
+            return value
+
+        def __set__(self, ga.float32 value):
+            ga.handle_setParamf(self.handle, ga.HANDLE_PARAM_PAN, value)
+
 cdef class Sound(object):
     cdef ga.Sound* sound