Initial changes to allow for xvsm demo

module_usb_audio/audio_io/userbuffermanagement.c

@@ -0,0 +1,9 @@
+
+#include "xccompat.h"
+
+/* Default implentation for UserBufferManagement() */
+void UserBufferManagement(unsigned sampsFromUsbToAudio[], unsigned sampsFromAudioToUsb[], unsigned i_dsp) __attribute__ ((weak));
+void UserBufferManagement(unsigned sampsFromUsbToAudio[], unsigned sampsFromAudioToUsb[], unsigned i_dsp)
+{
+    /* Do nothing */
+}

module_usb_audio/main.xc

@@ -22,7 +22,8 @@
 #ifdef MIDI
 #include "usb_midi.h"
 #endif
-#include "audio.h"
+
+#include "xua_audio.h"
 
 #ifdef IAP
 #include "i2c_shared.h"
@@ -44,11 +45,11 @@
 #include "clocking.h"
 
 #if (NUM_PDM_MICS > 0)
-#include "pcm_pdm_mic.h"
+#include "xua_pdm_mic.h"
 #endif
 
 #ifdef RUN_DSP_TASK
-#include "dsp.h"
+#include "xua_dsp.h"
 #endif
 
 [[distributable]]
@@ -669,10 +670,9 @@ int main()
 #endif
 
 #if (NUM_PDM_MICS > 0)
-        on stdcore[PDM_TILE]: pcm_pdm_mic(c_ds_output);
+        on stdcore[PDM_TILE]: pdm_mic(c_ds_output);
+        on stdcore[PDM_TILE].core[0]: pdm_buffer(c_ds_output, c_pdm_pcm, i_mic_process);
 #endif
-        on stdcore[PDM_TILE].core[0]: pdm_process(c_ds_output, c_pdm_pcm, i_mic_process);
-        
         // TODO move this to USER_MAIN_CORES or guard with RUN_DSP_TASK
         // TODO NUM_DSP_CTRL_INTS
         on stdcore[AUDIO_IO_TILE] : dsp_process(i_dsp, i_dsp_ctrl, 1);

module_usb_audio/pdm_mics/pdm_mic.h

@@ -0,0 +1,37 @@
+
+#include "mic_array.h"
+
+#ifdef MIC_PROCESSING_USE_INTERFACE
+/* Interface based user processing */
+typedef interface mic_process_if
+{
+    void transfer_buffers(mic_array_frame_time_domain * unsafe audio, int output[]);
+    void init();
+} mic_process_if;
+
+
+[[combinable]]
+void pdm_buffer(streaming chanend c_ds_output[2], chanend c_audio
+#ifdef MIC_PROCESSING_USE_INTERFACE
+   , client mic_process_if i_mic_process
+#endif
+);
+
+[[combinable]]
+void user_pdm_process(server mic_process_if i_mic_data);
+
+/* PDM interface and decimation cores */
+void pdm_mic(streaming chanend c_ds_output[2]);
+
+#else
+
+/* Simple user hooks/call-backs */
+unsafe void user_pdm_process(mic_array_frame_time_domain * unsafe audio, int output[]);
+
+void user_pdm_init();
+
+/* PDM interface and decimation cores */
+void pdm_mic(streaming chanend c_ds_output[2]);
+
+#endif
+