Add enumeration to device IO test.

tests/test_deviceio/ma_test_deviceio.c

@@ -232,6 +232,69 @@ ma_bool32 try_parse_noise(const char* arg, ma_noise_type* pNoiseType)
     return MA_FALSE;
 }
 
+ma_result print_device_info(ma_context* pContext, ma_device_type deviceType, const ma_device_info* pDeviceInfo)
+{
+    ma_result result;
+    ma_uint32 iFormat;
+    ma_device_info detailedDeviceInfo;
+
+    MA_ASSERT(pDeviceInfo != NULL);
+
+    result = ma_context_get_device_info(pContext, deviceType, &pDeviceInfo->id, ma_share_mode_shared, &detailedDeviceInfo);
+    if (result != MA_SUCCESS) {
+        return result;
+    }
+
+    printf("%s\n", pDeviceInfo->name);
+    printf("    Default:         %s\n", (detailedDeviceInfo._private.isDefault) ? "Yes" : "No");
+    printf("    Min Channels:    %d\n", detailedDeviceInfo.minChannels);
+    printf("    Max Channels:    %d\n", detailedDeviceInfo.maxChannels);
+    printf("    Min Sample Rate: %d\n", detailedDeviceInfo.minSampleRate);
+    printf("    Max Sample Rate: %d\n", detailedDeviceInfo.maxSampleRate);
+    printf("    Format Count:    %d\n", detailedDeviceInfo.formatCount);
+    for (iFormat = 0; iFormat < detailedDeviceInfo.formatCount; ++iFormat) {
+        printf("        %s\n", ma_get_format_name(detailedDeviceInfo.formats[iFormat]));
+    }
+    printf("\n");
+
+    return MA_SUCCESS;
+}
+
+ma_result enumerate_devices(ma_context* pContext)
+{
+    ma_result result;
+    ma_device_info* pPlaybackDevices;
+    ma_uint32 playbackDeviceCount;
+    ma_device_info* pCaptureDevices;
+    ma_uint32 captureDeviceCount;
+    ma_uint32 iDevice;
+
+    MA_ASSERT(pContext != NULL);
+
+    result = ma_context_get_devices(pContext, &pPlaybackDevices, &playbackDeviceCount, &pCaptureDevices, &captureDeviceCount);
+    if (result != MA_SUCCESS) {
+        return result;
+    }
+
+    printf("Playback Devices\n");
+    printf("----------------\n");
+    for (iDevice = 0; iDevice < playbackDeviceCount; iDevice += 1) {
+        printf("%d: ", iDevice);
+        print_device_info(pContext, ma_device_type_playback, &pPlaybackDevices[iDevice]);
+    }
+    printf("\n");
+
+    printf("Capture Devices\n");
+    printf("---------------\n");
+    for (iDevice = 0; iDevice < captureDeviceCount; iDevice += 1) {
+        printf("%d: ", iDevice);
+        print_device_info(pContext, ma_device_type_capture, &pCaptureDevices[iDevice]);
+    }
+    printf("\n");
+
+    return MA_SUCCESS;
+}
+
 void on_log(ma_context* pContext, ma_device* pDevice, ma_uint32 logLevel, const char* message)
 {
     (void)pContext;
@@ -305,6 +368,7 @@ int main(int argc, char** argv)
     ma_waveform_type waveformType = ma_waveform_type_sine;
     ma_noise_type noiseType = ma_noise_type_white;
     const char* pFilePath = NULL;  /* Input or output file path, depending on the mode. */
+    ma_bool32 enumerate = MA_TRUE;
 
     /* Default to a sine wave if nothing is passed into the command line. */
     waveformType = ma_waveform_type_sine;
@@ -348,6 +412,16 @@ int main(int argc, char** argv)
         return -1;
     }
 
+    /* Here we'll print some info about what we're doing. */
+    printf("Backend: %s\n", ma_get_backend_name(g_State.context.backend));
+    printf("Mode:    %s\n", get_mode_description(deviceType));
+    printf("\n");
+
+    /* Enumerate if required. */
+    if (enumerate) {
+        enumerate_devices(&g_State.context);
+    }
+
     /*
     Now that the context has been initialized we can do the device. In duplex mode we want to use the same format for both playback and capture so we don't need
     to do any data conversion between the two.
@@ -433,9 +507,7 @@ int main(int argc, char** argv)
     }
 
 
-    /* Here we'll print some info about what we're doing. */
-    printf("Backend:         %s\n", ma_get_backend_name(g_State.context.backend));
-    printf("Mode:            %s\n", get_mode_description(deviceType));
+    /* Print the name of the device. */
     if (deviceType == ma_device_type_playback || deviceType == ma_device_type_duplex) {
         printf("Playback Device: %s\n", g_State.device.playback.name);
     }