Bug#1051567: cubicsdr: FTBFS with RtAudio 6

[IOhannes m zmoelnig <umlaeute@debian.org>]

Source: cubicsdr
Version: 0.2.7+dfsg-2
Severity: important
Tags: ftbfs patch

Dear Maintainer,

cubicsdr ftbfs with RtAudio6 (currently found in experimental)

```
/<<PKGBUILDDIR>>/src/audio/AudioThread.cpp: In member function ‘void AudioThread::setupDevice(int)’:
/<<PKGBUILDDIR>>/src/audio/AudioThread.cpp:435:12: error: ‘RtAudioError’ does not name a type; did you mean ‘RtAudioErrorType’?
  435 |     catch (RtAudioError& e) {
      |            ^~~~~~~~~~~~
      |            RtAudioErrorType
/<<PKGBUILDDIR>>/src/audio/AudioThread.cpp:436:9: error: ‘e’ was not declared in this scope
  436 |         e.printMessage();
      |         ^
/<<PKGBUILDDIR>>/src/audio/AudioThread.cpp: In member function ‘virtual void AudioThread::run()’:
/<<PKGBUILDDIR>>/src/audio/AudioThread.cpp:539:16: error: ‘RtAudioError’ does not name a type; did you mean ‘RtAudioErrorType’?
  539 |         catch (RtAudioError& e) {
      |                ^~~~~~~~~~~~
      |                RtAudioErrorType
/<<PKGBUILDDIR>>/src/audio/AudioThread.cpp:540:13: error: ‘e’ was not declared in this scope
  540 |             e.printMessage();
      |             ^
make[3]: *** [CMakeFiles/CubicSDR.dir/build.make:485: CMakeFiles/CubicSDR.dir/src/audio/AudioThread.cpp.o] Error 1
make[3]: *** Waiting for unfinished jobs....
```

Attached you find a patch that fixes the FTBFS (but is otherwise untested, so
use with care).
No debdiff this time, sorry

cheers

Description: Fix FTBFS with RtAudio 6
 Replace try/catch with checking for return codes
Author: IOhannes m zmölnig
Origin: Debian
Forwarded: no
Last-Update: 2023-09-09
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
Index: cubicsdr-0.2.7+dfsg/src/audio/AudioThread.cpp
===================================================================
--- cubicsdr-0.2.7+dfsg.orig/src/audio/AudioThread.cpp
+++ cubicsdr-0.2.7+dfsg/src/audio/AudioThread.cpp
@@ -7,6 +7,7 @@
 #include "CubicSDR.h"
 #include "DemodulatorInstance.h"
 #include <mutex>
+#include <iostream>
 
 //50 ms
 #define HEARTBEAT_CHECK_PERIOD_MICROS (50 * 1000) 
@@ -378,7 +379,6 @@ void AudioThread::setupDevice(int device
 
     opts.streamName = "CubicSDR Audio Output";
 
-    try {
         if (deviceController.find(outputDevice.load()) != deviceController.end()) {
             //'this' is not the controller, so remove it from the bounded list:
             //beware, we must take the controller mutex, because the audio callback may use the list of bounded
@@ -418,8 +418,14 @@ void AudioThread::setupDevice(int device
         else if (deviceController[parameters.deviceId] == this) {
 
             //Attach callback
-            dac.openStream(&parameters, nullptr, RTAUDIO_FLOAT32, sampleRate, &nBufferFrames, &audioCallback, (void *)this, &opts);
-            dac.startStream();
+	    if(dac.openStream(&parameters, nullptr, RTAUDIO_FLOAT32, sampleRate, &nBufferFrames, &audioCallback, (void *)this, &opts)) {
+		    std::cerr << dac.getErrorText() << std::endl;
+		    return;
+	    }
+            if(dac.startStream()) {
+		    std::cerr << dac.getErrorText() << std::endl;
+		    return;
+	    }
         }
         else {
             //we are a bound thread, add ourselves to the controller deviceController[parameters.deviceId].
@@ -431,11 +437,6 @@ void AudioThread::setupDevice(int device
         }
         active = true;
 
-    }
-    catch (RtAudioError& e) {
-        e.printMessage();
-        return;
-    }
     if (deviceId != -1) {
         outputDevice = deviceId;
     }
@@ -530,15 +531,12 @@ void AudioThread::run() {
     }
     else {
         // 'this' is a controller thread:
-        try {
             if (dac.isStreamOpen()) {
-                dac.stopStream(); 
+                if(dac.stopStream()) {
+		    std::cerr << dac.getErrorText() << std::endl;
+		}
             }
             dac.closeStream();
-        }
-        catch (RtAudioError& e) {
-            e.printMessage();
-        }
     }
 
     //    std::cout << "Audio thread done." << std::endl;