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Core Audio: Improvements to device enumeration on iOS.

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This commit is contained in:
David Reid
2020-07-25 14:31:33 +10:00
parent 21043fd62d
commit 917dc594e4
1 changed files with 94 additions and 13 deletions
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miniaudio.h
+94 -13
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@@ -3211,6 +3211,8 @@ typedef struct
{
ma_ios_session_category sessionCategory;
ma_uint32 sessionCategoryOptions;
ma_bool32 noAudioSessionActivate; /* iOS only. When set to true, does not perform an explicit [[AVAudioSession sharedInstace] setActive:true] on initialization. */
ma_bool32 noAudioSessionDeactivate; /* iOS only. When set to true, does not perform an explicit [[AVAudioSession sharedInstace] setActive:false] on uninitialization. */
} coreaudio;
struct
{
@@ -3479,6 +3481,8 @@ struct ma_context
ma_proc AudioUnitRender;
/*AudioComponent*/ ma_ptr component;
ma_bool32 noAudioSessionDeactivate; /* For tracking whether or not we should explicitly deactivation the audio session on iOS. Set from the config in ma_context_init__coreaudio(). */
} coreaudio;
#endif
#ifdef MA_SUPPORT_SNDIO
@@ -23620,6 +23624,13 @@ static ma_bool32 ma_context_is_device_id_equal__coreaudio(ma_context* pContext,
return strcmp(pID0->coreaudio, pID1->coreaudio) == 0;
}
static void ma_AVAudioSessionPortDescription_to_device_info(AVAudioSessionPortDescription* pPortDesc, ma_device_info* pInfo)
{
MA_ZERO_OBJECT(pInfo);
ma_strncpy_s(pInfo->name, sizeof(pInfo->name), [pPortDesc.portName UTF8String], (size_t)-1);
ma_strncpy_s(pInfo->id.coreaudio, sizeof(pInfo->id.coreaudio), [pPortDesc.UID UTF8String], (size_t)-1);
}
static ma_result ma_context_enumerate_devices__coreaudio(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
#if defined(MA_APPLE_DESKTOP)
@@ -23659,19 +23670,22 @@ static ma_result ma_context_enumerate_devices__coreaudio(ma_context* pContext, m
ma_free(pDeviceObjectIDs, &pContext->allocationCallbacks);
#else
/* Only supporting default devices on non-Desktop platforms. */
ma_device_info info;
NSArray *pInputs = [[[AVAudioSession sharedInstance] currentRoute] inputs];
NSArray *pOutputs = [[[AVAudioSession sharedInstance] currentRoute] outputs];
MA_ZERO_OBJECT(&info);
ma_strncpy_s(info.name, sizeof(info.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
if (!callback(pContext, ma_device_type_playback, &info, pUserData)) {
return MA_SUCCESS;
for (AVAudioSessionPortDescription* pPortDesc in pOutputs) {
ma_AVAudioSessionPortDescription_to_device_info(pPortDesc, &info);
if (!callback(pContext, ma_device_type_playback, &info, pUserData)) {
return MA_SUCCESS;
}
}
MA_ZERO_OBJECT(&info);
ma_strncpy_s(info.name, sizeof(info.name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
if (!callback(pContext, ma_device_type_capture, &info, pUserData)) {
return MA_SUCCESS;
for (AVAudioSessionPortDescription* pPortDesc in pInputs) {
ma_AVAudioSessionPortDescription_to_device_info(pPortDesc, &info);
if (!callback(pContext, ma_device_type_capture, &info, pUserData)) {
return MA_SUCCESS;
}
}
#endif
@@ -23787,12 +23801,41 @@ static ma_result ma_context_get_device_info__coreaudio(ma_context* pContext, ma_
AudioUnitElement formatElement;
AudioStreamBasicDescription bestFormat;
UInt32 propSize;
if (deviceType == ma_device_type_playback) {
ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
/* We want to ensure we use a consistent device name to device enumeration. */
if (pDeviceID != NULL) {
ma_bool32 found = MA_FALSE;
if (deviceType == ma_device_type_playback) {
NSArray *pOutputs = [[[AVAudioSession sharedInstance] currentRoute] outputs];
for (AVAudioSessionPortDescription* pPortDesc in pOutputs) {
if (strcmp(pDeviceID->coreaudio, [pPortDesc.UID UTF8String]) == 0) {
ma_AVAudioSessionPortDescription_to_device_info(pPortDesc, pDeviceInfo);
found = MA_TRUE;
break;
}
}
} else {
NSArray *pInputs = [[[AVAudioSession sharedInstance] currentRoute] inputs];
for (AVAudioSessionPortDescription* pPortDesc in pInputs) {
if (strcmp(pDeviceID->coreaudio, [pPortDesc.UID UTF8String]) == 0) {
ma_AVAudioSessionPortDescription_to_device_info(pPortDesc, pDeviceInfo);
found = MA_TRUE;
break;
}
}
}
if (!found) {
return MA_DOES_NOT_EXIST;
}
} else {
ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
if (deviceType == ma_device_type_playback) {
ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
} else {
ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
}
}
/*
Retrieving device information is more annoying on mobile than desktop. For simplicity I'm locking this down to whatever format is
@@ -24594,6 +24637,28 @@ static ma_result ma_device_init_internal__coreaudio(ma_context* pContext, ma_dev
((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
return ma_result_from_OSStatus(result);
}
#else
/*
For some reason it looks like Apple is only allowing selection of the input device. There does not appear to be any way to change
the default output route. I have no idea why this is like this, but for now we'll only be able to configure capture devices.
*/
if (pDeviceID != NULL) {
if (deviceType == ma_device_type_capture) {
ma_bool32 found = MA_FALSE;
NSArray *pInputs = [[[AVAudioSession sharedInstance] currentRoute] inputs];
for (AVAudioSessionPortDescription* pPortDesc in pInputs) {
if (strcmp(pDeviceID->coreaudio, [pPortDesc.UID UTF8String]) == 0) {
[[AVAudioSession sharedInstance] setPreferredInput:pPortDesc error:nil];
found = MA_TRUE;
break;
}
}
if (found == MA_FALSE) {
return MA_DOES_NOT_EXIST;
}
}
}
#endif
/*
@@ -25184,6 +25249,14 @@ static ma_result ma_context_uninit__coreaudio(ma_context* pContext)
MA_ASSERT(pContext != NULL);
MA_ASSERT(pContext->backend == ma_backend_coreaudio);
#if defined(MA_APPLE_MOBILE)
if (!pContext->coreaudio.noAudioSessionDeactivate) {
if (![[AVAudioSession sharedInstance] setActive:false error:nil]) {
return ma_context_post_error(pContext, NULL, MA_LOG_LEVEL_ERROR, "Failed to deactivate audio session.", MA_FAILED_TO_INIT_BACKEND);
}
}
#endif
#if !defined(MA_NO_RUNTIME_LINKING) && !defined(MA_APPLE_MOBILE)
ma_dlclose(pContext, pContext->coreaudio.hAudioUnit);
ma_dlclose(pContext, pContext->coreaudio.hCoreAudio);
@@ -25260,6 +25333,12 @@ static ma_result ma_context_init__coreaudio(const ma_context_config* pConfig, ma
}
}
}
if (!pConfig->coreaudio.noAudioSessionActivate) {
if (![pAudioSession setActive:true error:nil]) {
return ma_context_post_error(pContext, NULL, MA_LOG_LEVEL_ERROR, "Failed to activate audio session.", MA_FAILED_TO_INIT_BACKEND);
}
}
}
#endif
@@ -25392,6 +25471,8 @@ static ma_result ma_context_init__coreaudio(const ma_context_config* pConfig, ma
}
#endif
pContext->coreaudio.noAudioSessionDeactivate = pConfig->coreaudio.noAudioSessionDeactivate;
return MA_SUCCESS;
}
#endif /* Core Audio */