Version 0.11.21

Unlocked notification fires on emscripten upon successful resume of
audio context attached to a device.  This occurs only once per device
and it happens after the browser has received the input event
necessary to begin playing audio on most webpages.  This is due
to autoplay rules.

It is recommended to wait until this event is fired to start a
'main game loop' on the web.

CHANGES.md

@@ -1,3 +1,16 @@
+v0.11.21 - 2023-11-15
+=====================
+* Add new ma_device_notification_type_unlocked notification. This is used on Web and will be fired after the user has performed a gesture and thus unlocked the ability to play audio.
+* Web: Fix an error where the buffer size is incorrectly calculated.
+* Core Audio: Fix a -Wshadow warning.
+
+
+v0.11.20 - 2023-11-10
+=====================
+* Fix a compilation error with iOS.
+* Fix an error when dynamically linking libraries when forcing the UWP build on desktop.
+
+
 v0.11.19 - 2023-11-04
 =====================
 * Fix a bug where `ma_decoder_init_file()` can incorrectly return successfully.

extras/miniaudio_split/miniaudio.c

@@ -1,6 +1,6 @@
 /*
 Audio playback and capture library. Choice of public domain or MIT-0. See license statements at the end of this file.
-miniaudio - v0.11.19 - 2023-11-04
+miniaudio - v0.11.21 - 2023-11-15
 
 David Reid - mackron@gmail.com
 
@@ -6397,7 +6397,7 @@ MA_API ma_handle ma_dlopen(ma_log* pLog, const char* filename)
 
     #ifdef MA_WIN32
         /* From MSDN: Desktop applications cannot use LoadPackagedLibrary; if a desktop application calls this function it fails with APPMODEL_ERROR_NO_PACKAGE.*/
-        #if !defined(MA_WIN32_UWP)
+        #if !defined(MA_WIN32_UWP) || !(defined(WINAPI_FAMILY) && ((defined(WINAPI_FAMILY_PHONE_APP) && WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)))
             handle = (ma_handle)LoadLibraryA(filename);
         #else
             /* *sigh* It appears there is no ANSI version of LoadPackagedLibrary()... */
@@ -7245,16 +7245,11 @@ static void ma_device__on_notification_rerouted(ma_device* pDevice)
 }
 #endif
 
-/* Interruptions are only used on some platforms. */
+#if defined(MA_EMSCRIPTEN)
-#if defined(MA_APPLE_MOBILE)
+EMSCRIPTEN_KEEPALIVE
-static void ma_device__on_notification_interruption_began(ma_device* pDevice)
+void ma_device__on_notification_unlocked(ma_device* pDevice)
 {
-    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_interruption_began));
+    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_unlocked));
-}
-
-static void ma_device__on_notification_interruption_ended(ma_device* pDevice)
-{
-    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_interruption_ended));
 }
 #endif
 
@@ -12088,6 +12083,39 @@ static ma_result ma_context_init__wasapi(ma_context* pContext, const ma_context_
 
     MA_ZERO_OBJECT(&pContext->wasapi);
 
+
+    #if defined(MA_WIN32_UWP)
+    {
+        /* Link to mmdevapi so we can get access to ActivateAudioInterfaceAsync(). */
+        pContext->wasapi.hMMDevapi = ma_dlopen(ma_context_get_log(pContext), "mmdevapi.dll");
+        if (pContext->wasapi.hMMDevapi) {
+            pContext->wasapi.ActivateAudioInterfaceAsync = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi, "ActivateAudioInterfaceAsync");
+            if (pContext->wasapi.ActivateAudioInterfaceAsync == NULL) {
+                ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi);
+                return MA_NO_BACKEND;   /* ActivateAudioInterfaceAsync() could not be loaded. */
+            }
+        } else {
+            return MA_NO_BACKEND;   /* Failed to load mmdevapi.dll which is required for ActivateAudioInterfaceAsync() */
+        }
+    }
+    #endif
+
+    /* Optionally use the Avrt API to specify the audio thread's latency sensitivity requirements */
+    pContext->wasapi.hAvrt = ma_dlopen(ma_context_get_log(pContext), "avrt.dll");
+    if (pContext->wasapi.hAvrt) {
+        pContext->wasapi.AvSetMmThreadCharacteristicsA   = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hAvrt, "AvSetMmThreadCharacteristicsA");
+        pContext->wasapi.AvRevertMmThreadcharacteristics = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hAvrt, "AvRevertMmThreadCharacteristics");
+
+        /* If either function could not be found, disable use of avrt entirely. */
+        if (!pContext->wasapi.AvSetMmThreadCharacteristicsA || !pContext->wasapi.AvRevertMmThreadcharacteristics) {
+            pContext->wasapi.AvSetMmThreadCharacteristicsA   = NULL;
+            pContext->wasapi.AvRevertMmThreadcharacteristics = NULL;
+            ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hAvrt);
+            pContext->wasapi.hAvrt = NULL;
+        }
+    }
+
+
     /*
     Annoyingly, WASAPI does not allow you to release an IAudioClient object from a different thread
     than the one that retrieved it with GetService(). This can result in a deadlock in two
@@ -12131,41 +12159,6 @@ static ma_result ma_context_init__wasapi(ma_context* pContext, const ma_context_
             ma_mutex_uninit(&pContext->wasapi.commandLock);
             return result;
         }
-
-        #if defined(MA_WIN32_UWP)
-        {
-            /* Link to mmdevapi so we can get access to ActivateAudioInterfaceAsync(). */
-            pContext->wasapi.hMMDevapi = ma_dlopen(ma_context_get_log(pContext), "mmdevapi.dll");
-            if (pContext->wasapi.hMMDevapi) {
-                pContext->wasapi.ActivateAudioInterfaceAsync = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi, "ActivateAudioInterfaceAsync");
-                if (pContext->wasapi.ActivateAudioInterfaceAsync == NULL) {
-                    ma_semaphore_uninit(&pContext->wasapi.commandSem);
-                    ma_mutex_uninit(&pContext->wasapi.commandLock);
-                    ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi);
-                    return MA_NO_BACKEND;   /* ActivateAudioInterfaceAsync() could not be loaded. */
-                }
-            } else {
-                ma_semaphore_uninit(&pContext->wasapi.commandSem);
-                ma_mutex_uninit(&pContext->wasapi.commandLock);
-                return MA_NO_BACKEND;   /* Failed to load mmdevapi.dll which is required for ActivateAudioInterfaceAsync() */
-            }
-        }
-        #endif
-
-        /* Optionally use the Avrt API to specify the audio thread's latency sensitivity requirements */
-        pContext->wasapi.hAvrt = ma_dlopen(ma_context_get_log(pContext), "avrt.dll");
-        if (pContext->wasapi.hAvrt) {
-            pContext->wasapi.AvSetMmThreadCharacteristicsA   = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hAvrt, "AvSetMmThreadCharacteristicsA");
-            pContext->wasapi.AvRevertMmThreadcharacteristics = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hAvrt, "AvRevertMmThreadCharacteristics");
-
-            /* If either function could not be found, disable use of avrt entirely. */
-            if (!pContext->wasapi.AvSetMmThreadCharacteristicsA || !pContext->wasapi.AvRevertMmThreadcharacteristics) {
-                pContext->wasapi.AvSetMmThreadCharacteristicsA   = NULL;
-                pContext->wasapi.AvRevertMmThreadcharacteristics = NULL;
-                ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hAvrt);
-                pContext->wasapi.hAvrt = NULL;
-            }
-        }
     }
 
 
@@ -20461,6 +20454,18 @@ size, allocate a block of memory of that size and then call AudioObjectGetProper
 AudioDeviceID's so just do "dataSize/sizeof(AudioDeviceID)" to know the device count.
 */
 
+#if defined(MA_APPLE_MOBILE)
+static void ma_device__on_notification_interruption_began(ma_device* pDevice)
+{
+    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_interruption_began));
+}
+
+static void ma_device__on_notification_interruption_ended(ma_device* pDevice)
+{
+    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_interruption_ended));
+}
+#endif
+
 static ma_result ma_result_from_OSStatus(OSStatus status)
 {
     switch (status)
@@ -21377,9 +21382,9 @@ static ma_result ma_find_best_format__coreaudio(ma_context* pContext, AudioObjec
 
     hasSupportedFormat = MA_FALSE;
     for (iFormat = 0; iFormat < deviceFormatDescriptionCount; ++iFormat) {
-        ma_format format;
+        ma_format formatFromDescription;
-        ma_result formatResult = ma_format_from_AudioStreamBasicDescription(&pDeviceFormatDescriptions[iFormat].mFormat, &format);
+        ma_result formatResult = ma_format_from_AudioStreamBasicDescription(&pDeviceFormatDescriptions[iFormat].mFormat, &formatFromDescription);
-        if (formatResult == MA_SUCCESS && format != ma_format_unknown) {
+        if (formatResult == MA_SUCCESS && formatFromDescription != ma_format_unknown) {
             hasSupportedFormat = MA_TRUE;
             bestDeviceFormatSoFar = pDeviceFormatDescriptions[iFormat].mFormat;
             break;
@@ -28380,6 +28385,7 @@ static ma_result ma_device_uninit__webaudio(ma_device* pDevice)
             */
             device.webaudio.close();
             device.webaudio = undefined;
+            device.pDevice = undefined;
         }, pDevice->webaudio.deviceIndex);
     }
     #endif
@@ -28403,6 +28409,10 @@ static ma_uint32 ma_calculate_period_size_in_frames_from_descriptor__webaudio(co
     */
     ma_uint32 periodSizeInFrames;
 
+    if (nativeSampleRate == 0) {
+        nativeSampleRate = MA_DEFAULT_SAMPLE_RATE;
+    }
+
     if (pDescriptor->periodSizeInFrames == 0) {
         if (pDescriptor->periodSizeInMilliseconds == 0) {
             if (performanceProfile == ma_performance_profile_low_latency) {
@@ -28875,6 +28885,8 @@ static ma_result ma_device_init__webaudio(ma_device* pDevice, const ma_device_co
                 device.scriptNode.connect(device.webaudio.destination);
             }
 
+            device.pDevice = pDevice;
+
             return miniaudio.track_device(device);
         }, pConfig->deviceType, channels, sampleRate, periodSizeInFrames, pDevice->webaudio.pIntermediaryBuffer, pDevice);
 
@@ -29047,8 +29059,15 @@ static ma_result ma_context_init__webaudio(ma_context* pContext, const ma_contex
             miniaudio.unlock = function() {
                 for(var i = 0; i < miniaudio.devices.length; ++i) {
                     var device = miniaudio.devices[i];
-                    if (device != null && device.webaudio != null && device.state === 2 /* ma_device_state_started */) {
+                    if (device != null &&
-                        device.webaudio.resume();
+                        device.webaudio != null &&
+                        device.state === window.miniaudio.device_state.started) {
+
+                        device.webaudio.resume().then(() => {
+                                Module._ma_device__on_notification_unlocked(device.pDevice);
+                            },
+                            (error) => {console.error("Failed to resume audiocontext", error);
+                            });
                     }
                 }
                 miniaudio.unlock_event_types.map(function(event_type) {

extras/miniaudio_split/miniaudio.h

@@ -1,6 +1,6 @@
 /*
 Audio playback and capture library. Choice of public domain or MIT-0. See license statements at the end of this file.
-miniaudio - v0.11.19 - 2023-11-04
+miniaudio - v0.11.21 - 2023-11-15
 
 David Reid - mackron@gmail.com
 
@@ -20,7 +20,7 @@ extern "C" {
 
 #define MA_VERSION_MAJOR    0
 #define MA_VERSION_MINOR    11
-#define MA_VERSION_REVISION 19
+#define MA_VERSION_REVISION 21
 #define MA_VERSION_STRING   MA_XSTRINGIFY(MA_VERSION_MAJOR) "." MA_XSTRINGIFY(MA_VERSION_MINOR) "." MA_XSTRINGIFY(MA_VERSION_REVISION)
 
 #if defined(_MSC_VER) && !defined(__clang__)
@@ -3013,7 +3013,8 @@ typedef enum
     ma_device_notification_type_stopped,
     ma_device_notification_type_rerouted,
     ma_device_notification_type_interruption_began,
-    ma_device_notification_type_interruption_ended
+    ma_device_notification_type_interruption_ended,
+    ma_device_notification_type_unlocked
 } ma_device_notification_type;
 
 typedef struct

miniaudio.h

@@ -1,6 +1,6 @@
 /*
 Audio playback and capture library. Choice of public domain or MIT-0. See license statements at the end of this file.
-miniaudio - v0.11.19 - 2023-11-04
+miniaudio - v0.11.21 - 2023-11-15
 
 David Reid - mackron@gmail.com
 
@@ -3723,7 +3723,7 @@ extern "C" {
 
 #define MA_VERSION_MAJOR    0
 #define MA_VERSION_MINOR    11
-#define MA_VERSION_REVISION 19
+#define MA_VERSION_REVISION 21
 #define MA_VERSION_STRING   MA_XSTRINGIFY(MA_VERSION_MAJOR) "." MA_XSTRINGIFY(MA_VERSION_MINOR) "." MA_XSTRINGIFY(MA_VERSION_REVISION)
 
 #if defined(_MSC_VER) && !defined(__clang__)
@@ -6716,7 +6716,8 @@ typedef enum
     ma_device_notification_type_stopped,
     ma_device_notification_type_rerouted,
     ma_device_notification_type_interruption_began,
-    ma_device_notification_type_interruption_ended
+    ma_device_notification_type_interruption_ended,
+    ma_device_notification_type_unlocked
 } ma_device_notification_type;
 
 typedef struct
@@ -17820,7 +17821,7 @@ MA_API ma_handle ma_dlopen(ma_log* pLog, const char* filename)
 
     #ifdef MA_WIN32
         /* From MSDN: Desktop applications cannot use LoadPackagedLibrary; if a desktop application calls this function it fails with APPMODEL_ERROR_NO_PACKAGE.*/
-        #if !defined(MA_WIN32_UWP)
+        #if !defined(MA_WIN32_UWP) || !(defined(WINAPI_FAMILY) && ((defined(WINAPI_FAMILY_PHONE_APP) && WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)))
             handle = (ma_handle)LoadLibraryA(filename);
         #else
             /* *sigh* It appears there is no ANSI version of LoadPackagedLibrary()... */
@@ -18668,16 +18669,11 @@ static void ma_device__on_notification_rerouted(ma_device* pDevice)
 }
 #endif
 
-/* Interruptions are only used on some platforms. */
+#if defined(MA_EMSCRIPTEN)
-#if defined(MA_APPLE_MOBILE)
+EMSCRIPTEN_KEEPALIVE
-static void ma_device__on_notification_interruption_began(ma_device* pDevice)
+void ma_device__on_notification_unlocked(ma_device* pDevice)
 {
-    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_interruption_began));
+    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_unlocked));
-}
-
-static void ma_device__on_notification_interruption_ended(ma_device* pDevice)
-{
-    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_interruption_ended));
 }
 #endif
 
@@ -23511,6 +23507,39 @@ static ma_result ma_context_init__wasapi(ma_context* pContext, const ma_context_
 
     MA_ZERO_OBJECT(&pContext->wasapi);
 
+
+    #if defined(MA_WIN32_UWP)
+    {
+        /* Link to mmdevapi so we can get access to ActivateAudioInterfaceAsync(). */
+        pContext->wasapi.hMMDevapi = ma_dlopen(ma_context_get_log(pContext), "mmdevapi.dll");
+        if (pContext->wasapi.hMMDevapi) {
+            pContext->wasapi.ActivateAudioInterfaceAsync = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi, "ActivateAudioInterfaceAsync");
+            if (pContext->wasapi.ActivateAudioInterfaceAsync == NULL) {
+                ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi);
+                return MA_NO_BACKEND;   /* ActivateAudioInterfaceAsync() could not be loaded. */
+            }
+        } else {
+            return MA_NO_BACKEND;   /* Failed to load mmdevapi.dll which is required for ActivateAudioInterfaceAsync() */
+        }
+    }
+    #endif
+
+    /* Optionally use the Avrt API to specify the audio thread's latency sensitivity requirements */
+    pContext->wasapi.hAvrt = ma_dlopen(ma_context_get_log(pContext), "avrt.dll");
+    if (pContext->wasapi.hAvrt) {
+        pContext->wasapi.AvSetMmThreadCharacteristicsA   = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hAvrt, "AvSetMmThreadCharacteristicsA");
+        pContext->wasapi.AvRevertMmThreadcharacteristics = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hAvrt, "AvRevertMmThreadCharacteristics");
+
+        /* If either function could not be found, disable use of avrt entirely. */
+        if (!pContext->wasapi.AvSetMmThreadCharacteristicsA || !pContext->wasapi.AvRevertMmThreadcharacteristics) {
+            pContext->wasapi.AvSetMmThreadCharacteristicsA   = NULL;
+            pContext->wasapi.AvRevertMmThreadcharacteristics = NULL;
+            ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hAvrt);
+            pContext->wasapi.hAvrt = NULL;
+        }
+    }
+
+
     /*
     Annoyingly, WASAPI does not allow you to release an IAudioClient object from a different thread
     than the one that retrieved it with GetService(). This can result in a deadlock in two
@@ -23554,41 +23583,6 @@ static ma_result ma_context_init__wasapi(ma_context* pContext, const ma_context_
             ma_mutex_uninit(&pContext->wasapi.commandLock);
             return result;
         }
-
-        #if defined(MA_WIN32_UWP)
-        {
-            /* Link to mmdevapi so we can get access to ActivateAudioInterfaceAsync(). */
-            pContext->wasapi.hMMDevapi = ma_dlopen(ma_context_get_log(pContext), "mmdevapi.dll");
-            if (pContext->wasapi.hMMDevapi) {
-                pContext->wasapi.ActivateAudioInterfaceAsync = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi, "ActivateAudioInterfaceAsync");
-                if (pContext->wasapi.ActivateAudioInterfaceAsync == NULL) {
-                    ma_semaphore_uninit(&pContext->wasapi.commandSem);
-                    ma_mutex_uninit(&pContext->wasapi.commandLock);
-                    ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi);
-                    return MA_NO_BACKEND;   /* ActivateAudioInterfaceAsync() could not be loaded. */
-                }
-            } else {
-                ma_semaphore_uninit(&pContext->wasapi.commandSem);
-                ma_mutex_uninit(&pContext->wasapi.commandLock);
-                return MA_NO_BACKEND;   /* Failed to load mmdevapi.dll which is required for ActivateAudioInterfaceAsync() */
-            }
-        }
-        #endif
-
-        /* Optionally use the Avrt API to specify the audio thread's latency sensitivity requirements */
-        pContext->wasapi.hAvrt = ma_dlopen(ma_context_get_log(pContext), "avrt.dll");
-        if (pContext->wasapi.hAvrt) {
-            pContext->wasapi.AvSetMmThreadCharacteristicsA   = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hAvrt, "AvSetMmThreadCharacteristicsA");
-            pContext->wasapi.AvRevertMmThreadcharacteristics = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hAvrt, "AvRevertMmThreadCharacteristics");
-
-            /* If either function could not be found, disable use of avrt entirely. */
-            if (!pContext->wasapi.AvSetMmThreadCharacteristicsA || !pContext->wasapi.AvRevertMmThreadcharacteristics) {
-                pContext->wasapi.AvSetMmThreadCharacteristicsA   = NULL;
-                pContext->wasapi.AvRevertMmThreadcharacteristics = NULL;
-                ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hAvrt);
-                pContext->wasapi.hAvrt = NULL;
-            }
-        }
     }
 
 
@@ -31884,6 +31878,18 @@ size, allocate a block of memory of that size and then call AudioObjectGetProper
 AudioDeviceID's so just do "dataSize/sizeof(AudioDeviceID)" to know the device count.
 */
 
+#if defined(MA_APPLE_MOBILE)
+static void ma_device__on_notification_interruption_began(ma_device* pDevice)
+{
+    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_interruption_began));
+}
+
+static void ma_device__on_notification_interruption_ended(ma_device* pDevice)
+{
+    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_interruption_ended));
+}
+#endif
+
 static ma_result ma_result_from_OSStatus(OSStatus status)
 {
     switch (status)
@@ -32800,9 +32806,9 @@ static ma_result ma_find_best_format__coreaudio(ma_context* pContext, AudioObjec
 
     hasSupportedFormat = MA_FALSE;
     for (iFormat = 0; iFormat < deviceFormatDescriptionCount; ++iFormat) {
-        ma_format format;
+        ma_format formatFromDescription;
-        ma_result formatResult = ma_format_from_AudioStreamBasicDescription(&pDeviceFormatDescriptions[iFormat].mFormat, &format);
+        ma_result formatResult = ma_format_from_AudioStreamBasicDescription(&pDeviceFormatDescriptions[iFormat].mFormat, &formatFromDescription);
-        if (formatResult == MA_SUCCESS && format != ma_format_unknown) {
+        if (formatResult == MA_SUCCESS && formatFromDescription != ma_format_unknown) {
             hasSupportedFormat = MA_TRUE;
             bestDeviceFormatSoFar = pDeviceFormatDescriptions[iFormat].mFormat;
             break;
@@ -39803,6 +39809,7 @@ static ma_result ma_device_uninit__webaudio(ma_device* pDevice)
             */
             device.webaudio.close();
             device.webaudio = undefined;
+            device.pDevice = undefined;
         }, pDevice->webaudio.deviceIndex);
     }
     #endif
@@ -39826,6 +39833,10 @@ static ma_uint32 ma_calculate_period_size_in_frames_from_descriptor__webaudio(co
     */
     ma_uint32 periodSizeInFrames;
 
+    if (nativeSampleRate == 0) {
+        nativeSampleRate = MA_DEFAULT_SAMPLE_RATE;
+    }
+
     if (pDescriptor->periodSizeInFrames == 0) {
         if (pDescriptor->periodSizeInMilliseconds == 0) {
             if (performanceProfile == ma_performance_profile_low_latency) {
@@ -40298,6 +40309,8 @@ static ma_result ma_device_init__webaudio(ma_device* pDevice, const ma_device_co
                 device.scriptNode.connect(device.webaudio.destination);
             }
 
+            device.pDevice = pDevice;
+
             return miniaudio.track_device(device);
         }, pConfig->deviceType, channels, sampleRate, periodSizeInFrames, pDevice->webaudio.pIntermediaryBuffer, pDevice);
 
@@ -40470,8 +40483,15 @@ static ma_result ma_context_init__webaudio(ma_context* pContext, const ma_contex
             miniaudio.unlock = function() {
                 for(var i = 0; i < miniaudio.devices.length; ++i) {
                     var device = miniaudio.devices[i];
-                    if (device != null && device.webaudio != null && device.state === 2 /* ma_device_state_started */) {
+                    if (device != null &&
-                        device.webaudio.resume();
+                        device.webaudio != null &&
+                        device.state === window.miniaudio.device_state.started) {
+
+                        device.webaudio.resume().then(() => {
+                                Module._ma_device__on_notification_unlocked(device.pDevice);
+                            },
+                            (error) => {console.error("Failed to resume audiocontext", error);
+                            });
                     }
                 }
                 miniaudio.unlock_event_types.map(function(event_type) {

tests/test_deviceio/ma_test_deviceio.c

@@ -41,6 +41,7 @@ will receive the captured audio.
 If multiple backends are specified, the priority will be based on the order in which you specify them. If multiple waveform or noise types
 are specified the last one on the command line will have priority.
 */
+#define MA_FORCE_UWP
 #include "../test_common/ma_test_common.c"
 
 typedef enum