Fix audio capture reinitialization

We returned instead of continuing, so audio never worked after reinit.

We also had no retry logic if no audio device was available.

src/audio.cpp

@@ -222,14 +222,15 @@ namespace audio {
         case platf::capture_e::timeout:
           continue;
         case platf::capture_e::reinit:
+          BOOST_LOG(info) << "Reinitializing audio capture"sv;
           mic.reset();
-          mic = control->microphone(stream->mapping, stream->channelCount, stream->sampleRate, frame_size);
-          if (!mic) {
-            BOOST_LOG(error) << "Couldn't re-initialize audio input"sv;
-
-            return;
-          }
-          return;
+          do {
+            mic = control->microphone(stream->mapping, stream->channelCount, stream->sampleRate, frame_size);
+            if (!mic) {
+              BOOST_LOG(warning) << "Couldn't re-initialize audio input"sv;
+            }
+          } while (!mic && !shutdown_event->view(5s));
+          continue;
         default:
           return;
       }

src/thread_safe.h

@@ -100,6 +100,25 @@ namespace safe {
       return _status;
     }
 
+    // pop and view shoud not be used interchangeably
+    template <class Rep, class Period>
+    status_t
+    view(std::chrono::duration<Rep, Period> delay) {
+      std::unique_lock ul { _lock };
+
+      if (!_continue) {
+        return util::false_v<status_t>;
+      }
+
+      while (!_status) {
+        if (!_continue || _cv.wait_for(ul, delay) == std::cv_status::timeout) {
+          return util::false_v<status_t>;
+        }
+      }
+
+      return _status;
+    }
+
     bool
     peek() {
       return _continue && (bool) _status;