Add ENGINE_DRIVER_DEVICE_CAN_TRIPLE_BUFFER flag

source/backend/CarlaBackend.h

@@ -85,17 +85,23 @@ const unsigned int MAX_DEFAULT_PARAMETERS = 200;
  */
 const unsigned int ENGINE_DRIVER_DEVICE_HAS_CONTROL_PANEL = 0x1;
 
+/*!
+ * Engine driver device can use a triple-buffer (3 number of periods instead of the usual 2).
+ * @see ENGINE_OPTION_AUDIO_NUM_PERIODS
+ */
+const unsigned int ENGINE_DRIVER_DEVICE_CAN_TRIPLE_BUFFER = 0x2;
+
 /*!
  * Engine driver device can change buffer-size on the fly.
  * @see ENGINE_OPTION_AUDIO_BUFFER_SIZE
  */
-const unsigned int ENGINE_DRIVER_DEVICE_VARIABLE_BUFFER_SIZE = 0x2;
+const unsigned int ENGINE_DRIVER_DEVICE_VARIABLE_BUFFER_SIZE = 0x4;
 
 /*!
  * Engine driver device can change sample-rate on the fly.
  * @see ENGINE_OPTION_AUDIO_SAMPLE_RATE
  */
-const unsigned int ENGINE_DRIVER_DEVICE_VARIABLE_SAMPLE_RATE = 0x4;
+const unsigned int ENGINE_DRIVER_DEVICE_VARIABLE_SAMPLE_RATE = 0x8;
 
 /** @} */
 
@@ -1013,7 +1019,7 @@ typedef enum {
     ENGINE_OPTION_UI_BRIDGES_TIMEOUT = 8,
 
     /*!
-     * Audio number of periods.\n
+     * Number of audio periods.\n
      * Default is 2.
      */
     ENGINE_OPTION_AUDIO_NUM_PERIODS = 9,

source/carla_backend.py

@@ -134,9 +134,7 @@ def toPythonType(value, attr):
         #return int(value)
     #if isinstance(value, c_float_types):
         #return float(value)
-    if isinstance(value, c_intp_types):
-        return numPtrToList(value)
-    if isinstance(value, c_floatp_types):
+    if isinstance(value, c_intp_types) or isinstance(value, c_floatp_types):
         return numPtrToList(value)
     if isinstance(value, POINTER(c_char_p)):
         return charPtrPtrToStringList(value)
@@ -176,13 +174,17 @@ MAX_DEFAULT_PARAMETERS = 200
 # Engine driver device has custom control-panel.
 ENGINE_DRIVER_DEVICE_HAS_CONTROL_PANEL = 0x1
 
+# Engine driver device can use a triple-buffer (3 number of periods instead of the usual 2).
+# @see ENGINE_OPTION_AUDIO_NUM_PERIODS
+ENGINE_DRIVER_DEVICE_CAN_TRIPLE_BUFFER = 0x2
+
 # Engine driver device can change buffer-size on the fly.
 # @see ENGINE_OPTION_AUDIO_BUFFER_SIZE
-ENGINE_DRIVER_DEVICE_VARIABLE_BUFFER_SIZE = 0x2
+ENGINE_DRIVER_DEVICE_VARIABLE_BUFFER_SIZE = 0x4
 
 # Engine driver device can change sample-rate on the fly.
 # @see ENGINE_OPTION_AUDIO_SAMPLE_RATE
-ENGINE_DRIVER_DEVICE_VARIABLE_SAMPLE_RATE = 0x4
+ENGINE_DRIVER_DEVICE_VARIABLE_SAMPLE_RATE = 0x8
 
 # ------------------------------------------------------------------------------------------------------------
 # Plugin Hints
@@ -753,7 +755,7 @@ ENGINE_OPTION_MAX_PARAMETERS = 7
 # Default is 4000 (4 seconds).
 ENGINE_OPTION_UI_BRIDGES_TIMEOUT = 8
 
-# Audio number of periods.
+# Number of audio periods.
 # Default is 2.
 ENGINE_OPTION_AUDIO_NUM_PERIODS = 9