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Add SDL_GetAudioDeviceSpec.

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This API is supported by pipewire, pulseaudio, coreaudio, wasapi, and disk.
This commit is contained in:
Ethan Lee 2021-02-27 17:37:25 -05:00 • committed by Sam Lantinga
parent 00fabdde18
commit 67e8522d31
19 changed files with 256 additions and 67 deletions
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27
src/audio/wasapi/SDL_wasapi_winrt.cpp
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@ -32,6 +32,7 @@
#include <windows.devices.enumeration.h>
#include <windows.media.devices.h>
#include <wrl/implements.h>
#include <collection.h>
extern "C" {
#include "../../core/windows/SDL_windows.h"
@ -52,6 +53,8 @@ using namespace Windows::Media::Devices;
using namespace Windows::Foundation;
using namespace Microsoft::WRL;
static Platform::String^ SDL_PKEY_AudioEngine_DeviceFormat = L"{f19f064d-082c-4e27-bc73-6882a1bb8e4c} 0";
class SDL_WasapiDeviceEventHandler
{
public:
@ -78,9 +81,16 @@ private:
SDL_WasapiDeviceEventHandler::SDL_WasapiDeviceEventHandler(const SDL_bool _iscapture)
: iscapture(_iscapture)
, completed(SDL_CreateSemaphore(0))
, watcher(DeviceInformation::CreateWatcher(_iscapture ? DeviceClass::AudioCapture : DeviceClass::AudioRender))
{
if (!watcher || !completed)
if (!completed)
return; // uhoh.
Platform::String^ selector = _iscapture ? MediaDevice::GetAudioCaptureSelector() :
MediaDevice::GetAudioRenderSelector();
Platform::Collections::Vector<Platform::String^> properties;
properties.Append(SDL_PKEY_AudioEngine_DeviceFormat);
watcher = DeviceInformation::CreateWatcher(selector, properties.GetView());
if (!watcher)
return; // uhoh.
// !!! FIXME: this doesn't need a lambda here, I think, if I make SDL_WasapiDeviceEventHandler a proper C++/CX class. --ryan.
@ -124,7 +134,18 @@ SDL_WasapiDeviceEventHandler::OnDeviceAdded(DeviceWatcher^ sender, DeviceInforma
SDL_assert(sender == this->watcher);
char *utf8dev = WIN_StringToUTF8(info->Name->Data());
if (utf8dev) {
WASAPI_AddDevice(this->iscapture, utf8dev, info->Id->Data());
WAVEFORMATEXTENSIBLE fmt;
Platform::Object^ obj = info->Properties->Lookup(SDL_PKEY_AudioEngine_DeviceFormat);
if (obj) {
IPropertyValue^ property = (IPropertyValue^) obj;
Platform::Array<unsigned char>^ data;
property->GetUInt8Array(&data);
SDL_memcpy(&fmt, data->Data, SDL_min(data->Length, sizeof(WAVEFORMATEXTENSIBLE)));
} else {
SDL_zero(fmt);
}
WASAPI_AddDevice(this->iscapture, utf8dev, &fmt, info->Id->Data());
SDL_free(utf8dev);
}
}