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Update the null backend to the new enumeration system.

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This commit is contained in:
David Reid
2025-07-18 12:57:49 +10:00
parent 3b879485be
commit e6152c0ff9
1 changed files with 34 additions and 44 deletions
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miniaudio.h
+34 -44
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@@ -20732,6 +20732,37 @@ static void ma_context_uninit__null(ma_context* pContext)
ma_free(pContextStateNull, ma_context_get_allocation_callbacks(pContext));
}
static ma_bool32 ma_context_enumerate_device_from_type__null(ma_context* pContext, ma_device_type deviceType, ma_enum_devices_callback_proc callback, void* pUserData)
{
ma_device_info deviceInfo;
(void)pContext;
MA_ZERO_OBJECT(&deviceInfo);
/* Default. */
deviceInfo.isDefault = MA_TRUE;
/* ID. */
deviceInfo.id.nullbackend = 0;
/* Name. */
if (deviceType == ma_device_type_playback) {
ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), "NULL Playback Device", (size_t)-1);
} else {
ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), "NULL Capture Device", (size_t)-1);
}
/* Data Format. */
deviceInfo.nativeDataFormats[0].format = ma_format_unknown;
deviceInfo.nativeDataFormats[0].channels = 0;
deviceInfo.nativeDataFormats[0].sampleRate = 0;
deviceInfo.nativeDataFormats[0].flags = 0;
deviceInfo.nativeDataFormatCount = 1;
return callback(deviceType, &deviceInfo, pUserData);
}
static ma_result ma_context_enumerate_devices__null(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
ma_context_state_null* pContextStateNull = ma_context_get_backend_state__null(pContext);
@@ -20744,20 +20775,12 @@ static ma_result ma_context_enumerate_devices__null(ma_context* pContext, ma_enu
/* Playback. */
if (cbResult) {
ma_device_info deviceInfo;
MA_ZERO_OBJECT(&deviceInfo);
ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), "NULL Playback Device", (size_t)-1);
deviceInfo.isDefault = MA_TRUE; /* Only one playback and capture device for the null backend, so might as well mark as default. */
cbResult = callback(ma_device_type_playback, &deviceInfo, pUserData);
cbResult = ma_context_enumerate_device_from_type__null(pContext, ma_device_type_playback, callback, pUserData);
}
/* Capture. */
if (cbResult) {
ma_device_info deviceInfo;
MA_ZERO_OBJECT(&deviceInfo);
ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), "NULL Capture Device", (size_t)-1);
deviceInfo.isDefault = MA_TRUE; /* Only one playback and capture device for the null backend, so might as well mark as default. */
cbResult = callback(ma_device_type_capture, &deviceInfo, pUserData);
cbResult = ma_context_enumerate_device_from_type__null(pContext, ma_device_type_capture, callback, pUserData);
}
(void)cbResult; /* Silence a static analysis warning. */
@@ -20765,39 +20788,6 @@ static ma_result ma_context_enumerate_devices__null(ma_context* pContext, ma_enu
return MA_SUCCESS;
}
static ma_result ma_context_get_device_info__null(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
ma_context_state_null* pContextStateNull = ma_context_get_backend_state__null(pContext);
MA_ASSERT(pContextStateNull != NULL);
(void)pContextStateNull;
if (pDeviceID != NULL && pDeviceID->nullbackend != 0) {
return MA_NO_DEVICE; /* Don't know the device. */
}
/* Name / Description */
if (deviceType == ma_device_type_playback) {
ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), "NULL Playback Device", (size_t)-1);
} else {
ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), "NULL Capture Device", (size_t)-1);
}
pDeviceInfo->isDefault = MA_TRUE; /* Only one playback and capture device for the null backend, so might as well mark as default. */
/* Support everything on the null backend. */
pDeviceInfo->nativeDataFormats[0].format = ma_format_unknown;
pDeviceInfo->nativeDataFormats[0].channels = 0;
pDeviceInfo->nativeDataFormats[0].sampleRate = 0;
pDeviceInfo->nativeDataFormats[0].flags = 0;
pDeviceInfo->nativeDataFormatCount = 1;
return MA_SUCCESS;
}
static ma_result ma_device_init__null(ma_device* pDevice, const void* pDeviceBackendConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture, void** ppDeviceState)
{
ma_device_state_null* pDeviceStateNull;
@@ -21101,7 +21091,7 @@ static ma_device_backend_vtable ma_gDeviceBackendVTable_Null =
ma_context_init__null,
ma_context_uninit__null,
ma_context_enumerate_devices__null,
ma_context_get_device_info__null,
NULL,
ma_device_init__null,
ma_device_uninit__null,
ma_device_start__null,