1 files changed, 69 insertions, 0 deletions
diff --git a/pd/portaudio/pa_mac_core/pa_mac_core.h b/pd/portaudio/pa_mac_core/pa_mac_core.h
new file mode 100644
index 00000000..5994294a
--- /dev/null
+++ b/pd/portaudio/pa_mac_core/pa_mac_core.h
@@ -0,0 +1,69 @@
+/*
+ * Mac spcific flags for PA.
+ * portaudio.h should be included before this file.
+ */
+
+/*
+ * A pointer to a paMacCoreStreamInfo may be passed as
+ * the hostApiSpecificStreamInfo in the PaStreamParameters struct
+ * when opening a stream. Use NULL, for the defaults. Note that for
+ * duplex streams, both infos should be the same or behaviour
+ * is undefined.
+ */
+typedef struct paMacCoreStreamInfo
+{
+    unsigned long size;         /**size of whole structure including this header */
+    PaHostApiTypeId hostApiType;/**host API for which this data is intended */
+    unsigned long version;      /**structure version */
+    unsigned long flags;        /* flags to modify behaviour */
+} paMacCoreStreamInfo;
+
+/* Use this function to initialize a paMacCoreStreamInfo struct
+   using the requested flags. */
+void paSetupMacCoreStreamInfo( paMacCoreStreamInfo *data, unsigned long flags )
+{
+   bzero( data, sizeof( paMacCoreStreamInfo ) );
+   data->size = sizeof( paMacCoreStreamInfo );
+   data->hostApiType = paCoreAudio;
+   data->version = 0x01;
+   data->flags = flags;
+}
+
+/*
+ * The following flags alter the behaviour of PA on the mac platform.
+ * they can be ORed together. These should work both for opening and
+ * checking a device.
+ */
+/* Allows PortAudio to change things like the device's frame size,
+ * which allows for much lower latency, but might disrupt the device
+ * if other programs are using it. */
+const unsigned long paMacCore_ChangeDeviceParameters      = 0x01;
+
+/* In combination with the above flag,
+ * causes the stream opening to fail, unless the exact sample rates
+ * are supported by the device. */
+const unsigned long paMacCore_FailIfConversionRequired    = 0x02;
+
+/* These flags set the SR conversion quality, if required. The wierd ordering
+ * allows Maximum Quality to be the default.*/
+const unsigned long paMacCore_ConversionQualityMin    = 0x0100;
+const unsigned long paMacCore_ConversionQualityMedium = 0x0200;
+const unsigned long paMacCore_ConversionQualityLow    = 0x0300;
+const unsigned long paMacCore_ConversionQualityHigh   = 0x0400;
+const unsigned long paMacCore_ConversionQualityMax    = 0x0000;
+
+/*
+ * Here are some "preset" combinations of flags (above) to get to some
+ * common configurations. THIS IS OVERKILL, but if more flags are added
+ * it won't be.
+ */
+/*This is the default setting: do as much sample rate conversion as possible
+ * and as little mucking with the device as possible. */
+const unsigned long paMacCorePlayNice = 0x00;
+/*This setting is tuned for pro audio apps. It allows SR conversion on input
+  and output, but it tries to set the appropriate SR on the device.*/
+const unsigned long paMacCorePro      = 0x01;
+/*This is a setting to minimize CPU usage and still play nice.*/
+const unsigned long paMacCoreMinimizeCPUButPlayNice = 0x0100;
+/*This is a setting to minimize CPU usage, even if that means interrupting the device. */
+const unsigned long paMacCoreMinimizeCPU = 0x0101;