Pa_RefreshDevice functionality

examples/paex_record_file.c

@@ -258,7 +258,6 @@ static int recordCallback( const void *inputBuffer, void *outputBuffer,
 
     data->frameIndex += PaUtil_WriteRingBuffer(&data->ringBuffer, rptr, elementsToWrite);
 
-    return paContinue;
 }
 
 /* This routine will be called by the PortAudio engine when audio is needed.
@@ -272,8 +271,11 @@ static int playCallback( const void *inputBuffer, void *outputBuffer,
                          void *userData )
 {
     paTestData *data = (paTestData*)userData;
+
     ring_buffer_size_t elementsToPlay = PaUtil_GetRingBufferReadAvailable(&data->ringBuffer);
-    ring_buffer_size_t elementsToRead = rbs_min(elementsToPlay, (ring_buffer_size_t)(framesPerBuffer * NUM_CHANNELS));
+
+    ring_buffer_size_t elementsToRead = rbs_min( elementsToPlay, 
+                                                 (ring_buffer_size_t)(framesPerBuffer * NUM_CHANNELS) );
     SAMPLE* wptr = (SAMPLE*)outputBuffer;
 
     (void) inputBuffer; /* Prevent unused variable warnings. */

examples/paex_refresh_devs.c

@@ -0,0 +1,46 @@
+#include <time.h>
+#include <stdio.h>
+#include <unistd.h>
+#include "portaudio.h"
+
+int main() 
+{
+    PaError err = paNoError;
+
+    PaDeviceIndex defaultOutputDevice;
+    PaDeviceIndex defaultInputDevice;
+
+    err = Pa_Initialize();
+    if( err != paNoError )
+    {
+        printf( "ERROR: Pa_Initialize returned 0x%x\n", err );
+        goto error;
+    }
+
+    printf( "PortAudio version: 0x%08X\n", Pa_GetVersion());
+    // printf( "Version text: '%s'\n", Pa_GetVersionInfo()->versionText );
+
+    const int count = 20;
+    for (int i = 0; i < count; ++i)
+    {
+        defaultInputDevice = Pa_GetDefaultInputDevice();
+        defaultOutputDevice = Pa_GetDefaultOutputDevice();
+        printf("Input: %i, Output: %i\n", defaultInputDevice, defaultOutputDevice);
+
+        err = Pa_RefreshDevices();
+        if( err != paNoError )
+        {
+            printf( "ERROR: Pa_RefreshDevices returned 0x%x\n", err );
+            goto error;
+        }
+
+        sleep(2);
+    }
+
+    Pa_Terminate();
+
+    printf("----------------------------------------------\n");
+    return 0;
+error:
+    return 1;
+}

examples/paex_sine.c

@@ -154,6 +154,7 @@ int main(void)
     if( err != paNoError ) goto error;
 
     printf("Play for %d seconds.\n", NUM_SECONDS );
+
     Pa_Sleep( NUM_SECONDS * 1000 );
 
     err = Pa_StopStream( stream );