Clean up some exception messages and avoid duplicate log messages

14 files changed, 46 insertions, 184 deletions

diff --git a/alc/backends/alsa.cpp b/alc/backends/alsa.cpp
index a9eb6d5f..7c6ce4f9 100644
--- a/alc/backends/alsa.cpp
+++ b/alc/backends/alsa.cpp
@@ -616,11 +616,8 @@ void AlsaPlayback::open(const ALCchar *name)
     TRACE("Opening device \"%s\"\n", driver);
     int err{snd_pcm_open(&mPcmHandle, driver, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK)};
     if(err < 0)
-    {
-        ERR("Could not open playback device '%s': %s\n", driver, snd_strerror(err));
-        throw al::backend_exception{ALC_OUT_OF_MEMORY, "Could not open ALSA playback \"%s\"",
+        throw al::backend_exception{ALC_OUT_OF_MEMORY, "Could not open ALSA device \"%s\"",
             driver};
-    }
 
     /* Free alsa's global config tree. Otherwise valgrind reports a ton of leaks. */
     snd_config_update_free_global();
@@ -917,11 +914,8 @@ void AlsaCapture::open(const ALCchar *name)
     TRACE("Opening device \"%s\"\n", driver);
     int err{snd_pcm_open(&mPcmHandle, driver, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK)};
     if(err < 0)
-    {
-        ERR("Could not open capture device '%s': %s\n", driver, snd_strerror(err));
-        throw al::backend_exception{ALC_OUT_OF_MEMORY, "Could not open ALSA capture \"%s\"",
+        throw al::backend_exception{ALC_OUT_OF_MEMORY, "Could not open ALSA device \"%s\"",
             driver};
-    }
 
     /* Free alsa's global config tree. Otherwise valgrind reports a ton of leaks. */
     snd_config_update_free_global();
@@ -989,11 +983,7 @@ void AlsaCapture::open(const ALCchar *name)
     if(needring)
     {
         mRing = CreateRingBuffer(mDevice->BufferSize, mDevice->frameSizeFromFmt(), false);
-        if(!mRing)
-        {
-            ERR("ring buffer create failed\n");
-            throw al::backend_exception{ALC_INVALID_VALUE, "Failed to create ring buffer"};
-        }
+        if(!mRing) throw al::backend_exception{ALC_INVALID_VALUE, "Failed to create ring buffer"};
     }
 
     mDevice->DeviceName = name;
diff --git a/alc/backends/coreaudio.cpp b/alc/backends/coreaudio.cpp
index 3a97c105..9e1d4e47 100644
--- a/alc/backends/coreaudio.cpp
+++ b/alc/backends/coreaudio.cpp
@@ -108,26 +108,17 @@ void CoreAudioPlayback::open(const ALCchar *name)
 
     AudioComponent comp{AudioComponentFindNext(NULL, &desc)};
     if(comp == nullptr)
-    {
-        ERR("AudioComponentFindNext failed\n");
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not find audio component"};
-    }
 
     OSStatus err{AudioComponentInstanceNew(comp, &mAudioUnit)};
     if(err != noErr)
-    {
-        ERR("AudioComponentInstanceNew failed\n");
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not create component instance: %u",
             err};
-    }
 
     /* init and start the default audio unit... */
     err = AudioUnitInitialize(mAudioUnit);
     if(err != noErr)
-    {
-        ERR("AudioUnitInitialize failed\n");
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not initialize audio unit: %u", err};
-    }
 
     mDevice->DeviceName = name;
 }
@@ -418,41 +409,29 @@ void CoreAudioCapture::open(const ALCchar *name)
     // Search for component with given description
     comp = AudioComponentFindNext(NULL, &desc);
     if(comp == NULL)
-    {
-        ERR("AudioComponentFindNext failed\n");
-        throw al::backend_exception{ALC_INVALID_VALUE, "Could not finda udio component"};
-    }
+        throw al::backend_exception{ALC_INVALID_VALUE, "Could not find audio component"};
 
     // Open the component
     err = AudioComponentInstanceNew(comp, &mAudioUnit);
     if(err != noErr)
-    {
-        ERR("AudioComponentInstanceNew failed\n");
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not create component instance: %u",
             err};
-    }
 
     // Turn off AudioUnit output
     enableIO = 0;
     err = AudioUnitSetProperty(mAudioUnit, kAudioOutputUnitProperty_EnableIO,
         kAudioUnitScope_Output, 0, &enableIO, sizeof(ALuint));
     if(err != noErr)
-    {
-        ERR("AudioUnitSetProperty failed\n");
         throw al::backend_exception{ALC_INVALID_VALUE,
             "Could not disable audio unit output property: %u", err};
-    }
 
     // Turn on AudioUnit input
     enableIO = 1;
     err = AudioUnitSetProperty(mAudioUnit, kAudioOutputUnitProperty_EnableIO,
         kAudioUnitScope_Input, 1, &enableIO, sizeof(ALuint));
     if(err != noErr)
-    {
-        ERR("AudioUnitSetProperty failed\n");
         throw al::backend_exception{ALC_INVALID_VALUE,
             "Could not enable audio unit input property: %u", err};
-    }
 
 #if !TARGET_OS_IOS
     {
@@ -467,24 +446,15 @@ void CoreAudioCapture::open(const ALCchar *name)
         err = AudioObjectGetPropertyData(kAudioObjectSystemObject, &propertyAddress, 0, nullptr,
             &propertySize, &inputDevice);
         if(err != noErr)
-        {
-            ERR("AudioObjectGetPropertyData failed\n");
             throw al::backend_exception{ALC_INVALID_VALUE, "Could not get input device: %u", err};
-        }
         if(inputDevice == kAudioDeviceUnknown)
-        {
-            ERR("No input device found\n");
             throw al::backend_exception{ALC_INVALID_VALUE, "Unknown input device"};
-        }
 
         // Track the input device
         err = AudioUnitSetProperty(mAudioUnit, kAudioOutputUnitProperty_CurrentDevice,
             kAudioUnitScope_Global, 0, &inputDevice, sizeof(AudioDeviceID));
         if(err != noErr)
-        {
-            ERR("AudioUnitSetProperty failed\n");
             throw al::backend_exception{ALC_INVALID_VALUE, "Could not set input device: %u", err};
-        }
     }
 #endif
 
@@ -495,28 +465,19 @@ void CoreAudioCapture::open(const ALCchar *name)
     err = AudioUnitSetProperty(mAudioUnit, kAudioOutputUnitProperty_SetInputCallback,
         kAudioUnitScope_Global, 0, &input, sizeof(AURenderCallbackStruct));
     if(err != noErr)
-    {
-        ERR("AudioUnitSetProperty failed\n");
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not set capture callback: %u", err};
-    }
 
     // Initialize the device
     err = AudioUnitInitialize(mAudioUnit);
     if(err != noErr)
-    {
-        ERR("AudioUnitInitialize failed\n");
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not initialize audio unit: %u", err};
-    }
 
     // Get the hardware format
     propertySize = sizeof(AudioStreamBasicDescription);
     err = AudioUnitGetProperty(mAudioUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input,
         1, &hardwareFormat, &propertySize);
     if(err != noErr || propertySize != sizeof(AudioStreamBasicDescription))
-    {
-        ERR("AudioUnitGetProperty failed\n");
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not get input format: %u", err};
-    }
 
     // Set up the requested format description
     switch(mDevice->FmtType)
@@ -540,7 +501,6 @@ void CoreAudioCapture::open(const ALCchar *name)
     case DevFmtByte:
     case DevFmtUShort:
     case DevFmtUInt:
-        ERR("%s samples not supported\n", DevFmtTypeString(mDevice->FmtType));
         throw al::backend_exception{ALC_INVALID_VALUE, "%s samples not suppoted",
             DevFmtTypeString(mDevice->FmtType)};
     }
@@ -560,7 +520,6 @@ void CoreAudioCapture::open(const ALCchar *name)
     case DevFmtX61:
     case DevFmtX71:
     case DevFmtAmbi3D:
-        ERR("%s not supported\n", DevFmtChannelsString(mDevice->FmtChans));
         throw al::backend_exception{ALC_INVALID_VALUE, "%s not supported",
             DevFmtChannelsString(mDevice->FmtChans)};
     }
@@ -586,10 +545,7 @@ void CoreAudioCapture::open(const ALCchar *name)
     err = AudioUnitSetProperty(mAudioUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output,
         1, &outputFormat, sizeof(outputFormat));
     if(err != noErr)
-    {
-        ERR("AudioUnitSetProperty failed\n");
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not set input format: %u", err};
-    }
 
     // Set the AudioUnit output format frame count
     uint64_t FrameCount64{mDevice->UpdateSize};
@@ -597,21 +553,15 @@ void CoreAudioCapture::open(const ALCchar *name)
         mDevice->Frequency;
     FrameCount64 += MAX_RESAMPLER_PADDING;
     if(FrameCount64 > std::numeric_limits<uint32_t>::max()/2)
-    {
-        ERR("FrameCount too large\n");
         throw al::backend_exception{ALC_INVALID_VALUE,
-            "Calculated frame count is too lareg: %" PRIu64, FrameCount64};
-    }
+            "Calculated frame count is too large: %" PRIu64, FrameCount64};
 
     outputFrameCount = static_cast<uint32_t>(FrameCount64);
     err = AudioUnitSetProperty(mAudioUnit, kAudioUnitProperty_MaximumFramesPerSlice,
         kAudioUnitScope_Output, 0, &outputFrameCount, sizeof(outputFrameCount));
     if(err != noErr)
-    {
-        ERR("AudioUnitSetProperty failed: %d\n", err);
         throw al::backend_exception{ALC_INVALID_VALUE, "Failed to set capture frame count: %u",
             err};
-    }
 
     // Set up sample converter if needed
     if(outputFormat.mSampleRate != mDevice->Frequency)
diff --git a/alc/backends/dsound.cpp b/alc/backends/dsound.cpp
index d48b74e2..005c9584 100644
--- a/alc/backends/dsound.cpp
+++ b/alc/backends/dsound.cpp
@@ -341,10 +341,7 @@ void DSoundPlayback::open(const ALCchar *name)
     if(SUCCEEDED(hr))
         hr = mDS->SetCooperativeLevel(GetForegroundWindow(), DSSCL_PRIORITY);
     if(FAILED(hr))
-    {
-        ERR("Device init failed: 0x%08lx\n", hr);
         throw al::backend_exception{ALC_INVALID_VALUE, "Device init failed: 0x%08lx", hr};
-    }
 
     mDevice->DeviceName = name;
 }
@@ -753,8 +750,6 @@ void DSoundCapture::open(const ALCchar *name)
 
     if(FAILED(hr))
     {
-        ERR("Device init failed: 0x%08lx\n", hr);
-
         mRing = nullptr;
         if(mDSCbuffer)
             mDSCbuffer->Release();
diff --git a/alc/backends/jack.cpp b/alc/backends/jack.cpp
index 7c3f1822..2a22ed84 100644
--- a/alc/backends/jack.cpp
+++ b/alc/backends/jack.cpp
@@ -336,11 +336,9 @@ void JackPlayback::open(const ALCchar *name)
     jack_status_t status;
     mClient = jack_client_open(client_name, ClientOptions, &status, nullptr);
     if(mClient == nullptr)
-    {
-        ERR("jack_client_open() failed, status = 0x%02x\n", status);
-        throw al::backend_exception{ALC_INVALID_VALUE, "Failed to connect to JACK server: 0x%02x",
+        throw al::backend_exception{ALC_INVALID_VALUE, "Failed to open client connection: 0x%02x",
             status};
-    }
+
     if((status&JackServerStarted))
         TRACE("JACK server started\n");
     if((status&JackNameNotUnique))
diff --git a/alc/backends/opensl.cpp b/alc/backends/opensl.cpp
index f546f168..4e68da27 100644
--- a/alc/backends/opensl.cpp
+++ b/alc/backends/opensl.cpp
@@ -146,9 +146,9 @@ struct OpenSLPlayback final : public BackendBase {
     OpenSLPlayback(ALCdevice *device) noexcept : BackendBase{device} { }
     ~OpenSLPlayback() override;
 
+    void process(SLAndroidSimpleBufferQueueItf bq);
     static void processC(SLAndroidSimpleBufferQueueItf bq, void *context)
     { static_cast<OpenSLPlayback*>(context)->process(bq); }
-    void process(SLAndroidSimpleBufferQueueItf bq);
 
     int mixerProc();
 
@@ -339,8 +339,8 @@ void OpenSLPlayback::open(const ALCchar *name)
         mEngineObj = nullptr;
         mEngine = nullptr;
 
-        throw al::backend_exception{ALC_INVALID_VALUE, "Failed to initialize OpenSL: 0x%08x",
-            result};
+        throw al::backend_exception{ALC_INVALID_VALUE,
+            "Failed to initialize OpenSL device: 0x%08x", result};
     }
 
     mDevice->DeviceName = name;
@@ -629,9 +629,9 @@ struct OpenSLCapture final : public BackendBase {
     OpenSLCapture(ALCdevice *device) noexcept : BackendBase{device} { }
     ~OpenSLCapture() override;
 
+    void process(SLAndroidSimpleBufferQueueItf bq);
     static void processC(SLAndroidSimpleBufferQueueItf bq, void *context)
     { static_cast<OpenSLCapture*>(context)->process(bq); }
-    void process(SLAndroidSimpleBufferQueueItf bq);
 
     void open(const ALCchar *name) override;
     bool start() override;
@@ -839,8 +839,8 @@ void OpenSLCapture::open(const ALCchar* name)
         mEngineObj = nullptr;
         mEngine = nullptr;
 
-        throw al::backend_exception{ALC_INVALID_VALUE, "Failed to initialize OpenSL: 0x%08x",
-            result};
+        throw al::backend_exception{ALC_INVALID_VALUE,
+            "Failed to initialize OpenSL device: 0x%08x", result};
     }
 
     mDevice->DeviceName = name;
diff --git a/alc/backends/oss.cpp b/alc/backends/oss.cpp
index 5ab07dbe..856aceb0 100644
--- a/alc/backends/oss.cpp
+++ b/alc/backends/oss.cpp
@@ -350,11 +350,8 @@ void OSSPlayback::open(const ALCchar *name)
 
     mFd = ::open(devname, O_WRONLY);
     if(mFd == -1)
-    {
-        ERR("Could not open %s: %s\n", devname, strerror(errno));
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not open %s: %s", devname,
             strerror(errno)};
-    }
 
     mDevice->DeviceName = name;
 }
@@ -560,11 +557,8 @@ void OSScapture::open(const ALCchar *name)
 
     mFd = ::open(devname, O_RDONLY);
     if(mFd == -1)
-    {
-        ERR("Could not open %s: %s\n", devname, strerror(errno));
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not open %s: %s", devname,
             strerror(errno)};
-    }
 
     int ossFormat{};
     switch(mDevice->FmtType)
@@ -582,7 +576,6 @@ void OSScapture::open(const ALCchar *name)
     case DevFmtInt:
     case DevFmtUInt:
     case DevFmtFloat:
-        ERR("%s capture samples not supported\n", DevFmtTypeString(mDevice->FmtType));
         throw al::backend_exception{ALC_INVALID_VALUE, "%s capture samples not supported",
             DevFmtTypeString(mDevice->FmtType)};
     }
@@ -596,47 +589,30 @@ void OSScapture::open(const ALCchar *name)
     ALuint numFragmentsLogSize{(periods << 16) | log2FragmentSize};
 
     audio_buf_info info{};
-    const char *err;
 #define CHECKERR(func) if((func) < 0) {                                       \
-    err = #func;                                                              \
-    goto err;                                                                 \
+    throw al::backend_exception{ALC_INVALID_VALUE, #func " failed: %s", strerror(errno)}; \
 }
     CHECKERR(ioctl(mFd, SNDCTL_DSP_SETFRAGMENT, &numFragmentsLogSize));
     CHECKERR(ioctl(mFd, SNDCTL_DSP_SETFMT, &ossFormat));
     CHECKERR(ioctl(mFd, SNDCTL_DSP_CHANNELS, &numChannels));
     CHECKERR(ioctl(mFd, SNDCTL_DSP_SPEED, &ossSpeed));
     CHECKERR(ioctl(mFd, SNDCTL_DSP_GETISPACE, &info));
-    if(0)
-    {
-    err:
-        ERR("%s failed: %s\n", err, strerror(errno));
-        throw al::backend_exception{ALC_INVALID_VALUE, "%s failed: %s", err, strerror(errno)};
-    }
 #undef CHECKERR
 
     if(mDevice->channelsFromFmt() != numChannels)
-    {
-        ERR("Failed to set %s, got %d channels instead\n", DevFmtChannelsString(mDevice->FmtChans),
-            numChannels);
-        throw al::backend_exception{ALC_INVALID_VALUE, "Failed to set %s capture",
-            DevFmtChannelsString(mDevice->FmtChans)};
-    }
+        throw al::backend_exception{ALC_INVALID_VALUE,
+            "Failed to set %s, got %d channels instead", DevFmtChannelsString(mDevice->FmtChans),
+            numChannels};
 
-    if(!((ossFormat == AFMT_S8 && mDevice->FmtType == DevFmtByte) ||
-         (ossFormat == AFMT_U8 && mDevice->FmtType == DevFmtUByte) ||
-         (ossFormat == AFMT_S16_NE && mDevice->FmtType == DevFmtShort)))
-    {
-        ERR("Failed to set %s samples, got OSS format %#x\n", DevFmtTypeString(mDevice->FmtType), ossFormat);
-        throw al::backend_exception{ALC_INVALID_VALUE, "Failed to set %s samples",
-            DevFmtTypeString(mDevice->FmtType)};
-    }
+    if(!((ossFormat == AFMT_S8 && mDevice->FmtType == DevFmtByte)
+        || (ossFormat == AFMT_U8 && mDevice->FmtType == DevFmtUByte)
+        || (ossFormat == AFMT_S16_NE && mDevice->FmtType == DevFmtShort)))
+        throw al::backend_exception{ALC_INVALID_VALUE,
+            "Failed to set %s samples, got OSS format %#x", DevFmtTypeString(mDevice->FmtType),
+            ossFormat};
 
     mRing = CreateRingBuffer(mDevice->BufferSize, frameSize, false);
-    if(!mRing)
-    {
-        ERR("Ring buffer create failed\n");
-        throw al::backend_exception{ALC_INVALID_VALUE, "Failed to create ring buffer"};
-    }
+    if(!mRing) throw al::backend_exception{ALC_INVALID_VALUE, "Failed to create ring buffer"};
 
     mDevice->DeviceName = name;
 }
diff --git a/alc/backends/portaudio.cpp b/alc/backends/portaudio.cpp
index ba8e4984..7c60d2bb 100644
--- a/alc/backends/portaudio.cpp
+++ b/alc/backends/portaudio.cpp
@@ -166,7 +166,6 @@ retry_open:
             mParams.sampleFormat = paInt16;
             goto retry_open;
         }
-        ERR("Pa_OpenStream() returned an error: %s\n", Pa_GetErrorText(err));
         throw al::backend_exception{ALC_INVALID_VALUE, "Failed to open stream: %s",
             Pa_GetErrorText(err)};
     }
@@ -314,7 +313,6 @@ void PortCapture::open(const ALCchar *name)
         break;
     case DevFmtUInt:
     case DevFmtUShort:
-        ERR("%s samples not supported\n", DevFmtTypeString(mDevice->FmtType));
         throw al::backend_exception{ALC_INVALID_VALUE, "%s samples not supported",
             DevFmtTypeString(mDevice->FmtType)};
     }
@@ -323,11 +321,8 @@ void PortCapture::open(const ALCchar *name)
     PaError err{Pa_OpenStream(&mStream, &mParams, nullptr, mDevice->Frequency,
         paFramesPerBufferUnspecified, paNoFlag, &PortCapture::readCallbackC, this)};
     if(err != paNoError)
-    {
-        ERR("Pa_OpenStream() returned an error: %s\n", Pa_GetErrorText(err));
         throw al::backend_exception{ALC_INVALID_VALUE, "Failed to open stream: %s",
             Pa_GetErrorText(err)};
-    }
 
     mDevice->DeviceName = name;
 }
diff --git a/alc/backends/pulseaudio.cpp b/alc/backends/pulseaudio.cpp
index e4b1baa2..2521084d 100644
--- a/alc/backends/pulseaudio.cpp
+++ b/alc/backends/pulseaudio.cpp
@@ -1211,7 +1211,7 @@ void PulseCapture::open(const ALCchar *name)
         chanmap = X71ChanMap;
         break;
     case DevFmtAmbi3D:
-        throw al::backend_exception{ALC_INVALID_VALUE, "%s capture samples not supported",
+        throw al::backend_exception{ALC_INVALID_VALUE, "%s capture not supported",
             DevFmtChannelsString(mDevice->FmtChans)};
     }
     SetChannelOrderFromMap(mDevice, chanmap);
diff --git a/alc/backends/sdl2.cpp b/alc/backends/sdl2.cpp
index 1063ca7a..4cdf05b4 100644
--- a/alc/backends/sdl2.cpp
+++ b/alc/backends/sdl2.cpp
@@ -52,8 +52,9 @@ struct Sdl2Backend final : public BackendBase {
     Sdl2Backend(ALCdevice *device) noexcept : BackendBase{device} { }
     ~Sdl2Backend() override;
 
-    static void audioCallbackC(void *ptr, Uint8 *stream, int len);
     void audioCallback(Uint8 *stream, int len);
+    static void audioCallbackC(void *ptr, Uint8 *stream, int len)
+    { static_cast<Sdl2Backend*>(ptr)->audioCallback(stream, len); }
 
     void open(const ALCchar *name) override;
     bool reset() override;
@@ -80,9 +81,6 @@ Sdl2Backend::~Sdl2Backend()
     mDeviceID = 0;
 }
 
-void Sdl2Backend::audioCallbackC(void *ptr, Uint8 *stream, int len)
-{ static_cast<Sdl2Backend*>(ptr)->audioCallback(stream, len); }
-
 void Sdl2Backend::audioCallback(Uint8 *stream, int len)
 {
     const auto ulen = static_cast<unsigned int>(len);
@@ -130,16 +128,15 @@ void Sdl2Backend::open(const ALCchar *name)
         throw al::backend_exception{ALC_INVALID_VALUE, "%s", SDL_GetError()};
 
     mDevice->Frequency = static_cast<ALuint>(have.freq);
+
     if(have.channels == 1)
         mDevice->FmtChans = DevFmtMono;
     else if(have.channels == 2)
         mDevice->FmtChans = DevFmtStereo;
     else
-    {
-        ERR("Got unhandled SDL channel count: %d\n", int{have.channels});
         throw al::backend_exception{ALC_INVALID_VALUE, "Unhandled SDL channel count: %d",
             int{have.channels}};
-    }
+
     switch(have.format)
     {
     case AUDIO_U8:     mDevice->FmtType = DevFmtUByte;  break;
@@ -149,7 +146,6 @@ void Sdl2Backend::open(const ALCchar *name)
     case AUDIO_S32SYS: mDevice->FmtType = DevFmtInt;    break;
     case AUDIO_F32SYS: mDevice->FmtType = DevFmtFloat;  break;
     default:
-        ERR("Got unsupported SDL format: 0x%04x\n", have.format);
         throw al::backend_exception{ALC_INVALID_VALUE, "Unhandled SDL format: 0x%04x",
             have.format};
     }
diff --git a/alc/backends/sndio.cpp b/alc/backends/sndio.cpp
index 5657a241..026ff2b9 100644
--- a/alc/backends/sndio.cpp
+++ b/alc/backends/sndio.cpp
@@ -117,10 +117,7 @@ void SndioPlayback::open(const ALCchar *name)
 
     mSndHandle = sio_open(nullptr, SIO_PLAY, 0);
     if(mSndHandle == nullptr)
-    {
-        ERR("Could not open device\n");
-        throw al::backend_exception{ALC_INVALID_VALUE, "Could not open sound device"};
-    }
+        throw al::backend_exception{ALC_INVALID_VALUE, "Could not open backend device"};
 
     mDevice->DeviceName = name;
 }
@@ -329,10 +326,7 @@ void SndioCapture::open(const ALCchar *name)
 
     mSndHandle = sio_open(nullptr, SIO_REC, 0);
     if(mSndHandle == nullptr)
-    {
-        ERR("Could not open device\n");
-        throw al::backend_exception{ALC_INVALID_VALUE, "Could not open sound device"};
-    }
+        throw al::backend_exception{ALC_INVALID_VALUE, "Could not open backend device"};
 
     sio_par par;
     sio_initpar(&par);
@@ -364,7 +358,6 @@ void SndioCapture::open(const ALCchar *name)
         par.sig = 0;
         break;
     case DevFmtFloat:
-        ERR("%s capture samples not supported\n", DevFmtTypeString(mDevice->FmtType));
         throw al::backend_exception{ALC_INVALID_VALUE, "%s capture samples not supported",
             DevFmtTypeString(mDevice->FmtType)};
     }
@@ -381,40 +374,26 @@ void SndioCapture::open(const ALCchar *name)
     mDevice->BufferSize = par.appbufsz;
 
     if(!sio_setpar(mSndHandle, &par) || !sio_getpar(mSndHandle, &par))
-    {
-        ERR("Failed to set device parameters\n");
         throw al::backend_exception{ALC_INVALID_VALUE, "Failed to set device praameters"};
-    }
 
     if(par.bits != par.bps*8)
-    {
-        ERR("Padded samples not supported (%u of %u bits)\n", par.bits, par.bps*8);
         throw al::backend_exception{ALC_INVALID_VALUE,
             "Padded samples not supported (got %u of %u bits)", par.bits, par.bps*8};
-    }
 
-    if(!((mDevice->FmtType == DevFmtByte && par.bits == 8 && par.sig != 0) ||
-         (mDevice->FmtType == DevFmtUByte && par.bits == 8 && par.sig == 0) ||
-         (mDevice->FmtType == DevFmtShort && par.bits == 16 && par.sig != 0) ||
-         (mDevice->FmtType == DevFmtUShort && par.bits == 16 && par.sig == 0) ||
-         (mDevice->FmtType == DevFmtInt && par.bits == 32 && par.sig != 0) ||
-         (mDevice->FmtType == DevFmtUInt && par.bits == 32 && par.sig == 0)) ||
-       mDevice->channelsFromFmt() != par.rchan || mDevice->Frequency != par.rate)
-    {
-        ERR("Failed to set format %s %s %uhz, got %c%u %u-channel %uhz instead\n",
-            DevFmtTypeString(mDevice->FmtType), DevFmtChannelsString(mDevice->FmtChans),
-            mDevice->Frequency, par.sig?'s':'u', par.bits, par.rchan, par.rate);
-        throw al::backend_exception{ALC_INVALID_VALUE, "Could not set format %s %s %uhz",
+    if(!((mDevice->FmtType == DevFmtByte && par.bits == 8 && par.sig != 0)
+        || (mDevice->FmtType == DevFmtUByte && par.bits == 8 && par.sig == 0)
+        || (mDevice->FmtType == DevFmtShort && par.bits == 16 && par.sig != 0)
+        || (mDevice->FmtType == DevFmtUShort && par.bits == 16 && par.sig == 0)
+        || (mDevice->FmtType == DevFmtInt && par.bits == 32 && par.sig != 0)
+        || (mDevice->FmtType == DevFmtUInt && par.bits == 32 && par.sig == 0))
+        || mDevice->channelsFromFmt() != par.rchan || mDevice->Frequency != par.rate)
+        throw al::backend_exception{ALC_INVALID_VALUE,
+            "Failed to set format %s %s %uhz, got %c%u %u-channel %uhz instead",
             DevFmtTypeString(mDevice->FmtType), DevFmtChannelsString(mDevice->FmtChans),
-            mDevice->Frequency};
-    }
+            mDevice->Frequency, par.sig?'s':'u', par.bits, par.rchan, par.rate};
 
     mRing = CreateRingBuffer(mDevice->BufferSize, par.bps*par.rchan, false);
-    if(!mRing)
-    {
-        ERR("Failed to allocate %u-byte ringbuffer\n", mDevice->BufferSize*par.bps*par.rchan);
-        throw al::backend_exception{ALC_OUT_OF_MEMORY, "Failed to allocate ring buffer"};
-    }
+    if(!mRing) throw al::backend_exception{ALC_OUT_OF_MEMORY, "Failed to allocate ring buffer"};
 
     SetDefaultChannelOrder(mDevice);
 
diff --git a/alc/backends/solaris.cpp b/alc/backends/solaris.cpp
index 79cc224d..7cc2606e 100644
--- a/alc/backends/solaris.cpp
+++ b/alc/backends/solaris.cpp
@@ -151,11 +151,8 @@ void SolarisBackend::open(const ALCchar *name)
 
     mFd = ::open(solaris_driver.c_str(), O_WRONLY);
     if(mFd == -1)
-    {
-        ERR("Could not open %s: %s\n", solaris_driver.c_str(), strerror(errno));
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not open %s: %s",
             solaris_driver.c_str(), strerror(errno)};
-    }
 
     mDevice->DeviceName = name;
 }
diff --git a/alc/backends/wasapi.cpp b/alc/backends/wasapi.cpp
index 181518d0..2c4fe130 100644
--- a/alc/backends/wasapi.cpp
+++ b/alc/backends/wasapi.cpp
@@ -762,7 +762,6 @@ void WasapiPlayback::open(const ALCchar *name)
 
         mDevId.clear();
 
-        ERR("Device init failed: 0x%08lx\n", hr);
         throw al::backend_exception{ALC_INVALID_VALUE, "Device init failed: 0x%08lx", hr};
     }
 }
@@ -1336,7 +1335,6 @@ void WasapiCapture::open(const ALCchar *name)
 
         mDevId.clear();
 
-        ERR("Device init failed: 0x%08lx\n", hr);
         throw al::backend_exception{ALC_INVALID_VALUE, "Device init failed: 0x%08lx", hr};
     }
 
diff --git a/alc/backends/wave.cpp b/alc/backends/wave.cpp
index 3b0a30d8..7bcc3436 100644
--- a/alc/backends/wave.cpp
+++ b/alc/backends/wave.cpp
@@ -223,11 +223,8 @@ void WaveBackend::open(const ALCchar *name)
     mFile = fopen(fname, "wb");
 #endif
     if(!mFile)
-    {
-        ERR("Could not open file '%s': %s\n", fname, strerror(errno));
         throw al::backend_exception{ALC_INVALID_VALUE, "Could not open file '%s': %s", fname,
             strerror(errno)};
-    }
 
     mDevice->DeviceName = name;
 }
diff --git a/alc/backends/winmm.cpp b/alc/backends/winmm.cpp
index 8f85f351..dde74304 100644
--- a/alc/backends/winmm.cpp
+++ b/alc/backends/winmm.cpp
@@ -127,8 +127,9 @@ struct WinMMPlayback final : public BackendBase {
     WinMMPlayback(ALCdevice *device) noexcept : BackendBase{device} { }
     ~WinMMPlayback() override;
 
-    static void CALLBACK waveOutProcC(HWAVEOUT device, UINT msg, DWORD_PTR instance, DWORD_PTR param1, DWORD_PTR param2);
     void CALLBACK waveOutProc(HWAVEOUT device, UINT msg, DWORD_PTR param1, DWORD_PTR param2);
+    static void CALLBACK waveOutProcC(HWAVEOUT device, UINT msg, DWORD_PTR instance, DWORD_PTR param1, DWORD_PTR param2)
+    { reinterpret_cast<WinMMPlayback*>(instance)->waveOutProc(device, msg, param1, param2); }
 
     int mixerProc();
 
@@ -162,10 +163,6 @@ WinMMPlayback::~WinMMPlayback()
     std::fill(mWaveBuffer.begin(), mWaveBuffer.end(), WAVEHDR{});
 }
 
-
-void CALLBACK WinMMPlayback::waveOutProcC(HWAVEOUT device, UINT msg, DWORD_PTR instance, DWORD_PTR param1, DWORD_PTR param2)
-{ reinterpret_cast<WinMMPlayback*>(instance)->waveOutProc(device, msg, param1, param2); }
-
 /* WinMMPlayback::waveOutProc
  *
  * Posts a message to 'WinMMPlayback::mixerProc' everytime a WaveOut Buffer is
@@ -256,7 +253,6 @@ retry_open:
             mDevice->FmtType = DevFmtShort;
             goto retry_open;
         }
-        ERR("waveOutOpen failed: %u\n", res);
         throw al::backend_exception{ALC_INVALID_VALUE, "waveOutOpen failed: %u", res};
     }
 
@@ -368,8 +364,9 @@ struct WinMMCapture final : public BackendBase {
     WinMMCapture(ALCdevice *device) noexcept : BackendBase{device} { }
     ~WinMMCapture() override;
 
-    static void CALLBACK waveInProcC(HWAVEIN device, UINT msg, DWORD_PTR instance, DWORD_PTR param1, DWORD_PTR param2);
     void CALLBACK waveInProc(HWAVEIN device, UINT msg, DWORD_PTR param1, DWORD_PTR param2);
+    static void CALLBACK waveInProcC(HWAVEIN device, UINT msg, DWORD_PTR instance, DWORD_PTR param1, DWORD_PTR param2)
+    { reinterpret_cast<WinMMCapture*>(instance)->waveInProc(device, msg, param1, param2); }
 
     int captureProc();
 
@@ -407,9 +404,6 @@ WinMMCapture::~WinMMCapture()
     std::fill(mWaveBuffer.begin(), mWaveBuffer.end(), WAVEHDR{});
 }
 
-void CALLBACK WinMMCapture::waveInProcC(HWAVEIN device, UINT msg, DWORD_PTR instance, DWORD_PTR param1, DWORD_PTR param2)
-{ reinterpret_cast<WinMMCapture*>(instance)->waveInProc(device, msg, param1, param2); }
-
 /* WinMMCapture::waveInProc
  *
  * Posts a message to 'WinMMCapture::captureProc' everytime a WaveIn Buffer is
@@ -513,10 +507,7 @@ void WinMMCapture::open(const ALCchar *name)
         reinterpret_cast<DWORD_PTR>(&WinMMCapture::waveInProcC),
         reinterpret_cast<DWORD_PTR>(this), CALLBACK_FUNCTION)};
     if(res != MMSYSERR_NOERROR)
-    {
-        ERR("waveInOpen failed: %u\n", res);
         throw al::backend_exception{ALC_INVALID_VALUE, "waveInOpen failed: %u", res};
-    }
 
     // Ensure each buffer is 50ms each
     DWORD BufferSize{mFormat.nAvgBytesPerSec / 20u};