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Web Audio: Include format information in device enumeration.

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This commit is contained in:
David Reid
2025-07-21 09:13:40 +10:00
parent 4a646fe191
commit 497f18c4a4
1 changed files with 49 additions and 56 deletions
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miniaudio.h
+49 -56
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@@ -42456,6 +42456,52 @@ static void ma_context_uninit__webaudio(ma_context* pContext)
ma_free(pContextStateWebAudio, ma_context_get_allocation_callbacks(pContext));
}
static ma_bool32 ma_context_enumerate_device_from_type__webaudio(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. */
/* Nothing to do. Always using defaults. */
/* Name. */
if (deviceType == ma_device_type_playback) {
ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
} else {
ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
}
/* Data Format. */
/* Web Audio can support any number of channels. It only supports f32 formats, however. */
deviceInfo.nativeDataFormats[0].flags = 0;
deviceInfo.nativeDataFormats[0].format = ma_format_unknown;
deviceInfo.nativeDataFormats[0].channels = 0; /* All channels are supported. */
deviceInfo.nativeDataFormats[0].sampleRate = EM_ASM_INT({
try {
var temp = new (window.AudioContext || window.webkitAudioContext)();
var sampleRate = temp.sampleRate;
temp.close();
return sampleRate;
} catch(e) {
return 0;
}
}, 0); /* Must pass in a dummy argument for C99 compatibility. */
if (deviceInfo.nativeDataFormats[0].sampleRate == 0) {
return MA_TRUE;
}
deviceInfo.nativeDataFormatCount = 1;
return callback(deviceType, &deviceInfo, pUserData);
}
static ma_result ma_context_enumerate_devices__webaudio(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
ma_bool32 cbResult = MA_TRUE;
@@ -42467,72 +42513,19 @@ static ma_result ma_context_enumerate_devices__webaudio(ma_context* pContext, ma
/* Playback. */
if (cbResult) {
ma_device_info deviceInfo;
MA_ZERO_OBJECT(&deviceInfo);
ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
deviceInfo.isDefault = MA_TRUE; /* Only supporting default devices. */
cbResult = callback(ma_device_type_playback, &deviceInfo, pUserData);
cbResult = ma_context_enumerate_device_from_type__webaudio(pContext, ma_device_type_playback, callback, pUserData);
}
/* Capture. */
if (cbResult) {
if (ma_is_capture_supported__webaudio()) {
ma_device_info deviceInfo;
MA_ZERO_OBJECT(&deviceInfo);
ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
deviceInfo.isDefault = MA_TRUE; /* Only supporting default devices. */
cbResult = callback(ma_device_type_capture, &deviceInfo, pUserData);
cbResult = ma_context_enumerate_device_from_type__webaudio(pContext, ma_device_type_capture, callback, pUserData);
}
}
return MA_SUCCESS;
}
static ma_result ma_context_get_device_info__webaudio(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
MA_ASSERT(pContext != NULL);
if (deviceType == ma_device_type_capture && !ma_is_capture_supported__webaudio()) {
return MA_NO_DEVICE;
}
MA_ZERO_MEMORY(pDeviceInfo->id.webaudio, sizeof(pDeviceInfo->id.webaudio));
/* Only supporting default devices for now. */
(void)pDeviceID;
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);
}
/* Only supporting default devices. */
pDeviceInfo->isDefault = MA_TRUE;
/* Web Audio can support any number of channels and sample rates. It only supports f32 formats, however. */
pDeviceInfo->nativeDataFormats[0].flags = 0;
pDeviceInfo->nativeDataFormats[0].format = ma_format_unknown;
pDeviceInfo->nativeDataFormats[0].channels = 0; /* All channels are supported. */
pDeviceInfo->nativeDataFormats[0].sampleRate = EM_ASM_INT({
try {
var temp = new (window.AudioContext || window.webkitAudioContext)();
var sampleRate = temp.sampleRate;
temp.close();
return sampleRate;
} catch(e) {
return 0;
}
}, 0); /* Must pass in a dummy argument for C99 compatibility. */
if (pDeviceInfo->nativeDataFormats[0].sampleRate == 0) {
return MA_NO_DEVICE;
}
pDeviceInfo->nativeDataFormatCount = 1;
return MA_SUCCESS;
}
#if !defined(MA_USE_AUDIO_WORKLETS)
static ma_uint32 ma_calculate_period_size_in_frames_from_descriptor__webaudio(const ma_device_descriptor* pDescriptor, ma_uint32 nativeSampleRate)
@@ -43197,7 +43190,7 @@ static ma_device_backend_vtable ma_gDeviceBackendVTable_WebAudio =
ma_context_init__webaudio,
ma_context_uninit__webaudio,
ma_context_enumerate_devices__webaudio,
ma_context_get_device_info__webaudio,
NULL,
ma_device_init__webaudio,
ma_device_uninit__webaudio,
ma_device_start__webaudio,