PulseAudio: Try fixing an error when initializing a device.

Public issue https://github.com/mackron/miniaudio/issues/412

miniaudio.h

@@ -28923,16 +28923,26 @@ static ma_result ma_device_init__pulse(ma_device* pDevice, const ma_device_confi
             goto on_error2;
         }
 
+
         /* Internal format. */
         pActualSS = ((ma_pa_stream_get_sample_spec_proc)pDevice->pContext->pulse.pa_stream_get_sample_spec)((ma_pa_stream*)pDevice->pulse.pStreamCapture);
         if (pActualSS != NULL) {
             ss = *pActualSS;
+            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Capture sample spec: format=%s, channels=%d, rate=%d\n", ma_get_format_name(ma_format_from_pulse(ss.format)), ss.channels, ss.rate);
+        } else {
+            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Failed to retrieve capture sample spec.\n");
         }
 
         pDescriptorCapture->format     = ma_format_from_pulse(ss.format);
         pDescriptorCapture->channels   = ss.channels;
         pDescriptorCapture->sampleRate = ss.rate;
 
+        if (pDescriptorCapture->format == ma_format_unknown || pDescriptorCapture->channels == 0 || pDescriptorCapture->sampleRate == 0) {
+            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Capture sample spec is invalid. Device unusable by miniaudio. format=%s, channels=%d, sampleRate=%d.\n", ma_get_format_name(pDescriptorCapture->format), pDescriptorCapture->channels, pDescriptorCapture->sampleRate);
+            result = MA_ERROR;
+            goto on_error4;
+        }
+
         /* Internal channel map. */
         pActualCMap = ((ma_pa_stream_get_channel_map_proc)pDevice->pContext->pulse.pa_stream_get_channel_map)((ma_pa_stream*)pDevice->pulse.pStreamCapture);
         if (pActualCMap != NULL) {
@@ -29038,12 +29048,21 @@ static ma_result ma_device_init__pulse(ma_device* pDevice, const ma_device_confi
         pActualSS = ((ma_pa_stream_get_sample_spec_proc)pDevice->pContext->pulse.pa_stream_get_sample_spec)((ma_pa_stream*)pDevice->pulse.pStreamPlayback);
         if (pActualSS != NULL) {
             ss = *pActualSS;
+            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Playback sample spec: format=%s, channels=%d, rate=%d\n", ma_get_format_name(ma_format_from_pulse(ss.format)), ss.channels, ss.rate);
+        } else {
+            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Failed to retrieve playback sample spec.\n");
         }
 
         pDescriptorPlayback->format     = ma_format_from_pulse(ss.format);
         pDescriptorPlayback->channels   = ss.channels;
         pDescriptorPlayback->sampleRate = ss.rate;
 
+        if (pDescriptorPlayback->format == ma_format_unknown || pDescriptorPlayback->channels == 0 || pDescriptorPlayback->sampleRate == 0) {
+            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Playback sample spec is invalid. Device unusable by miniaudio. format=%s, channels=%d, sampleRate=%d.\n", ma_get_format_name(pDescriptorPlayback->format), pDescriptorPlayback->channels, pDescriptorPlayback->sampleRate);
+            result = MA_ERROR;
+            goto on_error4;
+        }
+
         /* Internal channel map. */
         pActualCMap = ((ma_pa_stream_get_channel_map_proc)pDevice->pContext->pulse.pa_stream_get_channel_map)((ma_pa_stream*)pDevice->pulse.pStreamPlayback);
         if (pActualCMap != NULL) {