0051a96376
Apparently, 5.1 surround sound is supposed to use the "side" channels, not the back channels, and we've been wrong this whole time. That means the "5.1 Side" is actually the correct 5.1 setup, and using the back channels is anomalous. Additionally, this means the 5.1 buffer format should also use the the side channels instead of the back channels. A final note: the 5.1 mixing coefficients are changed so both use the original 5.1 surround sound set (with the surround channels at +/-110 degrees). So the only difference now between 5.1 "side" and 5.1 "back" is the channel labels.
1201 lines
37 KiB
C
1201 lines
37 KiB
C
/**
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* OpenAL cross platform audio library
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* Copyright (C) 2011 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#define COBJMACROS
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#include <stdlib.h>
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#include <stdio.h>
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#include <memory.h>
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#include <mmdeviceapi.h>
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#include <audioclient.h>
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#include <cguid.h>
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#include <devpropdef.h>
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#include <mmreg.h>
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#include <propsys.h>
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#include <propkey.h>
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#include <devpkey.h>
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#ifndef _WAVEFORMATEXTENSIBLE_
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#include <ks.h>
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#include <ksmedia.h>
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#endif
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#include "alMain.h"
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#include "alu.h"
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#include "threads.h"
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#include "compat.h"
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#include "alstring.h"
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#include "backends/base.h"
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DEFINE_GUID(KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
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DEFINE_GUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
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DEFINE_DEVPROPKEY(DEVPKEY_Device_FriendlyName, 0xa45c254e, 0xdf1c, 0x4efd, 0x80,0x20, 0x67,0xd1,0x46,0xa8,0x50,0xe0, 14);
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#define MONO SPEAKER_FRONT_CENTER
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#define STEREO (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT)
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#define QUAD (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT)
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#define X5DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT)
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#define X5DOT1REAR (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT)
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#define X6DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_CENTER|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT)
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#define X7DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT)
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typedef struct {
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al_string name;
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WCHAR *devid;
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} DevMap;
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TYPEDEF_VECTOR(DevMap, vector_DevMap)
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static void clear_devlist(vector_DevMap *list)
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{
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DevMap *iter, *end;
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iter = VECTOR_ITER_BEGIN(*list);
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end = VECTOR_ITER_END(*list);
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for(;iter != end;iter++)
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{
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AL_STRING_DEINIT(iter->name);
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free(iter->devid);
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}
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VECTOR_RESIZE(*list, 0);
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}
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static vector_DevMap PlaybackDevices;
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static vector_DevMap CaptureDevices;
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static HANDLE ThreadHdl;
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static DWORD ThreadID;
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typedef struct {
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HANDLE FinishedEvt;
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HRESULT result;
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} ThreadRequest;
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#define WM_USER_First (WM_USER+0)
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#define WM_USER_OpenDevice (WM_USER+0)
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#define WM_USER_ResetDevice (WM_USER+1)
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#define WM_USER_StartDevice (WM_USER+2)
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#define WM_USER_StopDevice (WM_USER+3)
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#define WM_USER_CloseDevice (WM_USER+4)
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#define WM_USER_Enumerate (WM_USER+5)
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#define WM_USER_Last (WM_USER+5)
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static inline void ReturnMsgResponse(ThreadRequest *req, HRESULT res)
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{
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req->result = res;
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SetEvent(req->FinishedEvt);
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}
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static HRESULT WaitForResponse(ThreadRequest *req)
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{
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if(WaitForSingleObject(req->FinishedEvt, INFINITE) == WAIT_OBJECT_0)
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return req->result;
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ERR("Message response error: %lu\n", GetLastError());
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return E_FAIL;
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}
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static void get_device_name(IMMDevice *device, al_string *name)
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{
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IPropertyStore *ps;
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PROPVARIANT pvname;
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HRESULT hr;
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hr = IMMDevice_OpenPropertyStore(device, STGM_READ, &ps);
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if(FAILED(hr))
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{
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WARN("OpenPropertyStore failed: 0x%08lx\n", hr);
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return;
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}
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PropVariantInit(&pvname);
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hr = IPropertyStore_GetValue(ps, (const PROPERTYKEY*)&DEVPKEY_Device_FriendlyName, &pvname);
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if(FAILED(hr))
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WARN("GetValue failed: 0x%08lx\n", hr);
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else
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al_string_copy_wcstr(name, pvname.pwszVal);
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PropVariantClear(&pvname);
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IPropertyStore_Release(ps);
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}
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static void add_device(IMMDevice *device, LPCWSTR devid, vector_DevMap *list)
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{
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DevMap entry;
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AL_STRING_INIT(entry.name);
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entry.devid = strdupW(devid);
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get_device_name(device, &entry.name);
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TRACE("Got device \"%s\", \"%ls\"\n", al_string_get_cstr(entry.name), entry.devid);
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VECTOR_PUSH_BACK(*list, entry);
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}
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static LPWSTR get_device_id(IMMDevice *device)
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{
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LPWSTR devid;
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HRESULT hr;
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hr = IMMDevice_GetId(device, &devid);
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if(FAILED(hr))
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{
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ERR("Failed to get device id: %lx\n", hr);
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return NULL;
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}
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return devid;
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}
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static HRESULT probe_devices(IMMDeviceEnumerator *devenum, EDataFlow flowdir, vector_DevMap *list)
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{
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IMMDeviceCollection *coll;
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IMMDevice *defdev = NULL;
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LPWSTR defdevid = NULL;
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HRESULT hr;
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UINT count;
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UINT i;
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hr = IMMDeviceEnumerator_EnumAudioEndpoints(devenum, flowdir, DEVICE_STATE_ACTIVE, &coll);
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if(FAILED(hr))
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{
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ERR("Failed to enumerate audio endpoints: 0x%08lx\n", hr);
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return hr;
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}
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count = 0;
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hr = IMMDeviceCollection_GetCount(coll, &count);
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if(SUCCEEDED(hr) && count > 0)
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{
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clear_devlist(list);
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if(!VECTOR_RESERVE(*list, count))
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{
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IMMDeviceCollection_Release(coll);
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return E_OUTOFMEMORY;
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}
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hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(devenum, flowdir,
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eMultimedia, &defdev);
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}
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if(SUCCEEDED(hr) && defdev != NULL)
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{
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defdevid = get_device_id(defdev);
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if(defdevid)
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add_device(defdev, defdevid, list);
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}
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for(i = 0;i < count;++i)
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{
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IMMDevice *device;
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LPWSTR devid;
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hr = IMMDeviceCollection_Item(coll, i, &device);
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if(FAILED(hr)) continue;
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devid = get_device_id(device);
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if(devid)
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{
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if(wcscmp(devid, defdevid) != 0)
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add_device(device, devid, list);
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CoTaskMemFree(devid);
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}
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IMMDevice_Release(device);
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}
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if(defdev) IMMDevice_Release(defdev);
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if(defdevid) CoTaskMemFree(defdevid);
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IMMDeviceCollection_Release(coll);
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return S_OK;
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}
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/* Proxy interface used by the message handler. */
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struct ALCmmdevProxyVtable;
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typedef struct ALCmmdevProxy {
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const struct ALCmmdevProxyVtable *vtbl;
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} ALCmmdevProxy;
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struct ALCmmdevProxyVtable {
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HRESULT (*const openProxy)(ALCmmdevProxy*);
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void (*const closeProxy)(ALCmmdevProxy*);
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HRESULT (*const resetProxy)(ALCmmdevProxy*);
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HRESULT (*const startProxy)(ALCmmdevProxy*);
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void (*const stopProxy)(ALCmmdevProxy*);
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};
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#define DEFINE_ALCMMDEVPROXY_VTABLE(T) \
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DECLARE_THUNK(T, ALCmmdevProxy, HRESULT, openProxy) \
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DECLARE_THUNK(T, ALCmmdevProxy, void, closeProxy) \
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DECLARE_THUNK(T, ALCmmdevProxy, HRESULT, resetProxy) \
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DECLARE_THUNK(T, ALCmmdevProxy, HRESULT, startProxy) \
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DECLARE_THUNK(T, ALCmmdevProxy, void, stopProxy) \
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\
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static const struct ALCmmdevProxyVtable T##_ALCmmdevProxy_vtable = { \
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T##_ALCmmdevProxy_openProxy, \
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T##_ALCmmdevProxy_closeProxy, \
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T##_ALCmmdevProxy_resetProxy, \
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T##_ALCmmdevProxy_startProxy, \
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T##_ALCmmdevProxy_stopProxy, \
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}
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static void ALCmmdevProxy_Construct(ALCmmdevProxy* UNUSED(self)) { }
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static void ALCmmdevProxy_Destruct(ALCmmdevProxy* UNUSED(self)) { }
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static DWORD CALLBACK ALCmmdevProxy_messageHandler(void *ptr)
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{
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ThreadRequest *req = ptr;
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IMMDeviceEnumerator *Enumerator;
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ALuint deviceCount = 0;
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ALCmmdevProxy *proxy;
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HRESULT hr, cohr;
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MSG msg;
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TRACE("Starting message thread\n");
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cohr = CoInitialize(NULL);
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if(FAILED(cohr))
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{
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WARN("Failed to initialize COM: 0x%08lx\n", cohr);
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ReturnMsgResponse(req, cohr);
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return 0;
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}
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hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, &ptr);
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if(FAILED(hr))
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{
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WARN("Failed to create IMMDeviceEnumerator instance: 0x%08lx\n", hr);
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CoUninitialize();
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ReturnMsgResponse(req, hr);
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return 0;
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}
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Enumerator = ptr;
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IMMDeviceEnumerator_Release(Enumerator);
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Enumerator = NULL;
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CoUninitialize();
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/* HACK: Force Windows to create a message queue for this thread before
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* returning success, otherwise PostThreadMessage may fail if it gets
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* called before GetMessage.
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*/
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PeekMessage(&msg, NULL, WM_USER, WM_USER, PM_NOREMOVE);
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TRACE("Message thread initialization complete\n");
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ReturnMsgResponse(req, S_OK);
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TRACE("Starting message loop\n");
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while(GetMessage(&msg, NULL, WM_USER_First, WM_USER_Last))
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{
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TRACE("Got message %u\n", msg.message);
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switch(msg.message)
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{
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case WM_USER_OpenDevice:
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req = (ThreadRequest*)msg.wParam;
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proxy = (ALCmmdevProxy*)msg.lParam;
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hr = cohr = S_OK;
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if(++deviceCount == 1)
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hr = cohr = CoInitialize(NULL);
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if(SUCCEEDED(hr))
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hr = V0(proxy,openProxy)();
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if(FAILED(hr))
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{
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if(--deviceCount == 0 && SUCCEEDED(cohr))
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CoUninitialize();
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}
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ReturnMsgResponse(req, hr);
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continue;
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case WM_USER_ResetDevice:
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req = (ThreadRequest*)msg.wParam;
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proxy = (ALCmmdevProxy*)msg.lParam;
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hr = V0(proxy,resetProxy)();
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ReturnMsgResponse(req, hr);
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continue;
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case WM_USER_StartDevice:
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req = (ThreadRequest*)msg.wParam;
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proxy = (ALCmmdevProxy*)msg.lParam;
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hr = V0(proxy,startProxy)();
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ReturnMsgResponse(req, hr);
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continue;
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case WM_USER_StopDevice:
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req = (ThreadRequest*)msg.wParam;
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proxy = (ALCmmdevProxy*)msg.lParam;
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V0(proxy,stopProxy)();
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ReturnMsgResponse(req, S_OK);
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continue;
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case WM_USER_CloseDevice:
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req = (ThreadRequest*)msg.wParam;
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proxy = (ALCmmdevProxy*)msg.lParam;
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V0(proxy,closeProxy)();
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if(--deviceCount == 0)
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CoUninitialize();
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ReturnMsgResponse(req, S_OK);
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continue;
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case WM_USER_Enumerate:
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req = (ThreadRequest*)msg.wParam;
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hr = cohr = S_OK;
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if(++deviceCount == 1)
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hr = cohr = CoInitialize(NULL);
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if(SUCCEEDED(hr))
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hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, &ptr);
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if(SUCCEEDED(hr))
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{
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Enumerator = ptr;
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if(msg.lParam == ALL_DEVICE_PROBE)
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hr = probe_devices(Enumerator, eRender, &PlaybackDevices);
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else if(msg.lParam == CAPTURE_DEVICE_PROBE)
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hr = probe_devices(Enumerator, eCapture, &CaptureDevices);
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IMMDeviceEnumerator_Release(Enumerator);
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Enumerator = NULL;
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}
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if(--deviceCount == 0 && SUCCEEDED(cohr))
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CoUninitialize();
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ReturnMsgResponse(req, hr);
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continue;
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default:
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ERR("Unexpected message: %u\n", msg.message);
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continue;
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}
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}
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TRACE("Message loop finished\n");
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return 0;
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}
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typedef struct ALCmmdevPlayback {
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DERIVE_FROM_TYPE(ALCbackend);
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DERIVE_FROM_TYPE(ALCmmdevProxy);
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WCHAR *devid;
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IMMDevice *mmdev;
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IAudioClient *client;
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IAudioRenderClient *render;
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HANDLE NotifyEvent;
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HANDLE MsgEvent;
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volatile UINT32 Padding;
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volatile int killNow;
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althrd_t thread;
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} ALCmmdevPlayback;
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static int ALCmmdevPlayback_mixerProc(void *arg);
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static void ALCmmdevPlayback_Construct(ALCmmdevPlayback *self, ALCdevice *device);
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static void ALCmmdevPlayback_Destruct(ALCmmdevPlayback *self);
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static ALCenum ALCmmdevPlayback_open(ALCmmdevPlayback *self, const ALCchar *name);
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static HRESULT ALCmmdevPlayback_openProxy(ALCmmdevPlayback *self);
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static void ALCmmdevPlayback_close(ALCmmdevPlayback *self);
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static void ALCmmdevPlayback_closeProxy(ALCmmdevPlayback *self);
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static ALCboolean ALCmmdevPlayback_reset(ALCmmdevPlayback *self);
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static HRESULT ALCmmdevPlayback_resetProxy(ALCmmdevPlayback *self);
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static ALCboolean ALCmmdevPlayback_start(ALCmmdevPlayback *self);
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static HRESULT ALCmmdevPlayback_startProxy(ALCmmdevPlayback *self);
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static void ALCmmdevPlayback_stop(ALCmmdevPlayback *self);
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static void ALCmmdevPlayback_stopProxy(ALCmmdevPlayback *self);
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static DECLARE_FORWARD2(ALCmmdevPlayback, ALCbackend, ALCenum, captureSamples, ALCvoid*, ALCuint)
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static DECLARE_FORWARD(ALCmmdevPlayback, ALCbackend, ALCuint, availableSamples)
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static ALint64 ALCmmdevPlayback_getLatency(ALCmmdevPlayback *self);
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static DECLARE_FORWARD(ALCmmdevPlayback, ALCbackend, void, lock)
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static DECLARE_FORWARD(ALCmmdevPlayback, ALCbackend, void, unlock)
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DECLARE_DEFAULT_ALLOCATORS(ALCmmdevPlayback)
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DEFINE_ALCMMDEVPROXY_VTABLE(ALCmmdevPlayback);
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DEFINE_ALCBACKEND_VTABLE(ALCmmdevPlayback);
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|
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static void ALCmmdevPlayback_Construct(ALCmmdevPlayback *self, ALCdevice *device)
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{
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SET_VTABLE2(ALCmmdevPlayback, ALCbackend, self);
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SET_VTABLE2(ALCmmdevPlayback, ALCmmdevProxy, self);
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ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
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ALCmmdevProxy_Construct(STATIC_CAST(ALCmmdevProxy, self));
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self->devid = NULL;
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self->mmdev = NULL;
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self->client = NULL;
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self->render = NULL;
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self->NotifyEvent = NULL;
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self->MsgEvent = NULL;
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self->Padding = 0;
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self->killNow = 0;
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}
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|
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static void ALCmmdevPlayback_Destruct(ALCmmdevPlayback *self)
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{
|
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if(self->NotifyEvent != NULL)
|
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CloseHandle(self->NotifyEvent);
|
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self->NotifyEvent = NULL;
|
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if(self->MsgEvent != NULL)
|
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CloseHandle(self->MsgEvent);
|
|
self->MsgEvent = NULL;
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|
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free(self->devid);
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self->devid = NULL;
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|
|
ALCmmdevProxy_Destruct(STATIC_CAST(ALCmmdevProxy, self));
|
|
ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
|
|
}
|
|
|
|
|
|
FORCE_ALIGN static int ALCmmdevPlayback_mixerProc(void *arg)
|
|
{
|
|
ALCmmdevPlayback *self = arg;
|
|
ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
|
|
UINT32 buffer_len, written;
|
|
ALuint update_size, len;
|
|
BYTE *buffer;
|
|
HRESULT hr;
|
|
|
|
hr = CoInitialize(NULL);
|
|
if(FAILED(hr))
|
|
{
|
|
ERR("CoInitialize(NULL) failed: 0x%08lx\n", hr);
|
|
ALCdevice_Lock(device);
|
|
aluHandleDisconnect(device);
|
|
ALCdevice_Unlock(device);
|
|
return 1;
|
|
}
|
|
|
|
SetRTPriority();
|
|
althrd_setname(althrd_current(), MIXER_THREAD_NAME);
|
|
|
|
update_size = device->UpdateSize;
|
|
buffer_len = update_size * device->NumUpdates;
|
|
while(!self->killNow)
|
|
{
|
|
hr = IAudioClient_GetCurrentPadding(self->client, &written);
|
|
if(FAILED(hr))
|
|
{
|
|
ERR("Failed to get padding: 0x%08lx\n", hr);
|
|
ALCdevice_Lock(device);
|
|
aluHandleDisconnect(device);
|
|
ALCdevice_Unlock(device);
|
|
break;
|
|
}
|
|
self->Padding = written;
|
|
|
|
len = buffer_len - written;
|
|
if(len < update_size)
|
|
{
|
|
DWORD res;
|
|
res = WaitForSingleObjectEx(self->NotifyEvent, 2000, FALSE);
|
|
if(res != WAIT_OBJECT_0)
|
|
ERR("WaitForSingleObjectEx error: 0x%lx\n", res);
|
|
continue;
|
|
}
|
|
len -= len%update_size;
|
|
|
|
hr = IAudioRenderClient_GetBuffer(self->render, len, &buffer);
|
|
if(SUCCEEDED(hr))
|
|
{
|
|
ALCdevice_Lock(device);
|
|
aluMixData(device, buffer, len);
|
|
self->Padding = written + len;
|
|
ALCdevice_Unlock(device);
|
|
hr = IAudioRenderClient_ReleaseBuffer(self->render, len, 0);
|
|
}
|
|
if(FAILED(hr))
|
|
{
|
|
ERR("Failed to buffer data: 0x%08lx\n", hr);
|
|
ALCdevice_Lock(device);
|
|
aluHandleDisconnect(device);
|
|
ALCdevice_Unlock(device);
|
|
break;
|
|
}
|
|
}
|
|
self->Padding = 0;
|
|
|
|
CoUninitialize();
|
|
return 0;
|
|
}
|
|
|
|
|
|
static ALCboolean MakeExtensible(WAVEFORMATEXTENSIBLE *out, const WAVEFORMATEX *in)
|
|
{
|
|
memset(out, 0, sizeof(*out));
|
|
if(in->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
|
|
*out = *(const WAVEFORMATEXTENSIBLE*)in;
|
|
else if(in->wFormatTag == WAVE_FORMAT_PCM)
|
|
{
|
|
out->Format = *in;
|
|
out->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
|
|
out->Format.cbSize = sizeof(*out) - sizeof(*in);
|
|
if(out->Format.nChannels == 1)
|
|
out->dwChannelMask = MONO;
|
|
else if(out->Format.nChannels == 2)
|
|
out->dwChannelMask = STEREO;
|
|
else
|
|
ERR("Unhandled PCM channel count: %d\n", out->Format.nChannels);
|
|
out->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
|
|
}
|
|
else if(in->wFormatTag == WAVE_FORMAT_IEEE_FLOAT)
|
|
{
|
|
out->Format = *in;
|
|
out->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
|
|
out->Format.cbSize = sizeof(*out) - sizeof(*in);
|
|
if(out->Format.nChannels == 1)
|
|
out->dwChannelMask = MONO;
|
|
else if(out->Format.nChannels == 2)
|
|
out->dwChannelMask = STEREO;
|
|
else
|
|
ERR("Unhandled IEEE float channel count: %d\n", out->Format.nChannels);
|
|
out->SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
|
|
}
|
|
else
|
|
{
|
|
ERR("Unhandled format tag: 0x%04x\n", in->wFormatTag);
|
|
return ALC_FALSE;
|
|
}
|
|
return ALC_TRUE;
|
|
}
|
|
|
|
|
|
static ALCenum ALCmmdevPlayback_open(ALCmmdevPlayback *self, const ALCchar *deviceName)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
self->NotifyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
self->MsgEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
if(self->NotifyEvent == NULL || self->MsgEvent == NULL)
|
|
{
|
|
ERR("Failed to create message events: %lu\n", GetLastError());
|
|
hr = E_FAIL;
|
|
}
|
|
|
|
if(SUCCEEDED(hr))
|
|
{
|
|
if(deviceName)
|
|
{
|
|
const DevMap *iter, *end;
|
|
|
|
if(VECTOR_SIZE(PlaybackDevices) == 0)
|
|
{
|
|
ThreadRequest req = { self->MsgEvent, 0 };
|
|
if(PostThreadMessage(ThreadID, WM_USER_Enumerate, (WPARAM)&req, ALL_DEVICE_PROBE))
|
|
(void)WaitForResponse(&req);
|
|
}
|
|
|
|
hr = E_FAIL;
|
|
iter = VECTOR_ITER_BEGIN(PlaybackDevices);
|
|
end = VECTOR_ITER_END(PlaybackDevices);
|
|
for(;iter != end;iter++)
|
|
{
|
|
if(al_string_cmp_cstr(iter->name, deviceName) == 0)
|
|
{
|
|
self->devid = strdupW(iter->devid);
|
|
hr = S_OK;
|
|
break;
|
|
}
|
|
}
|
|
if(FAILED(hr))
|
|
WARN("Failed to find device name matching \"%s\"\n", deviceName);
|
|
}
|
|
}
|
|
|
|
if(SUCCEEDED(hr))
|
|
{
|
|
ThreadRequest req = { self->MsgEvent, 0 };
|
|
|
|
hr = E_FAIL;
|
|
if(PostThreadMessage(ThreadID, WM_USER_OpenDevice, (WPARAM)&req, (LPARAM)STATIC_CAST(ALCmmdevProxy, self)))
|
|
hr = WaitForResponse(&req);
|
|
else
|
|
ERR("Failed to post thread message: %lu\n", GetLastError());
|
|
}
|
|
|
|
if(FAILED(hr))
|
|
{
|
|
if(self->NotifyEvent != NULL)
|
|
CloseHandle(self->NotifyEvent);
|
|
self->NotifyEvent = NULL;
|
|
if(self->MsgEvent != NULL)
|
|
CloseHandle(self->MsgEvent);
|
|
self->MsgEvent = NULL;
|
|
|
|
free(self->devid);
|
|
self->devid = NULL;
|
|
|
|
ERR("Device init failed: 0x%08lx\n", hr);
|
|
return ALC_INVALID_VALUE;
|
|
}
|
|
|
|
return ALC_NO_ERROR;
|
|
}
|
|
|
|
static HRESULT ALCmmdevPlayback_openProxy(ALCmmdevPlayback *self)
|
|
{
|
|
ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
|
|
void *ptr;
|
|
HRESULT hr;
|
|
|
|
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, &ptr);
|
|
if(SUCCEEDED(hr))
|
|
{
|
|
IMMDeviceEnumerator *Enumerator = ptr;
|
|
if(!self->devid)
|
|
hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(Enumerator, eRender, eMultimedia, &self->mmdev);
|
|
else
|
|
hr = IMMDeviceEnumerator_GetDevice(Enumerator, self->devid, &self->mmdev);
|
|
IMMDeviceEnumerator_Release(Enumerator);
|
|
Enumerator = NULL;
|
|
}
|
|
if(SUCCEEDED(hr))
|
|
hr = IMMDevice_Activate(self->mmdev, &IID_IAudioClient, CLSCTX_INPROC_SERVER, NULL, &ptr);
|
|
if(SUCCEEDED(hr))
|
|
{
|
|
self->client = ptr;
|
|
get_device_name(self->mmdev, &device->DeviceName);
|
|
}
|
|
|
|
if(FAILED(hr))
|
|
{
|
|
if(self->mmdev)
|
|
IMMDevice_Release(self->mmdev);
|
|
self->mmdev = NULL;
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
static void ALCmmdevPlayback_close(ALCmmdevPlayback *self)
|
|
{
|
|
ThreadRequest req = { self->MsgEvent, 0 };
|
|
|
|
if(PostThreadMessage(ThreadID, WM_USER_CloseDevice, (WPARAM)&req, (LPARAM)STATIC_CAST(ALCmmdevProxy, self)))
|
|
(void)WaitForResponse(&req);
|
|
|
|
CloseHandle(self->MsgEvent);
|
|
self->MsgEvent = NULL;
|
|
|
|
CloseHandle(self->NotifyEvent);
|
|
self->NotifyEvent = NULL;
|
|
|
|
free(self->devid);
|
|
self->devid = NULL;
|
|
}
|
|
|
|
static void ALCmmdevPlayback_closeProxy(ALCmmdevPlayback *self)
|
|
{
|
|
if(self->client)
|
|
IAudioClient_Release(self->client);
|
|
self->client = NULL;
|
|
|
|
if(self->mmdev)
|
|
IMMDevice_Release(self->mmdev);
|
|
self->mmdev = NULL;
|
|
}
|
|
|
|
|
|
static ALCboolean ALCmmdevPlayback_reset(ALCmmdevPlayback *self)
|
|
{
|
|
ThreadRequest req = { self->MsgEvent, 0 };
|
|
HRESULT hr = E_FAIL;
|
|
|
|
if(PostThreadMessage(ThreadID, WM_USER_ResetDevice, (WPARAM)&req, (LPARAM)STATIC_CAST(ALCmmdevProxy, self)))
|
|
hr = WaitForResponse(&req);
|
|
|
|
return SUCCEEDED(hr) ? ALC_TRUE : ALC_FALSE;
|
|
}
|
|
|
|
static HRESULT ALCmmdevPlayback_resetProxy(ALCmmdevPlayback *self)
|
|
{
|
|
ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
|
|
WAVEFORMATEXTENSIBLE OutputType;
|
|
WAVEFORMATEX *wfx = NULL;
|
|
REFERENCE_TIME min_per, buf_time;
|
|
UINT32 buffer_len, min_len;
|
|
void *ptr = NULL;
|
|
HRESULT hr;
|
|
|
|
if(self->client)
|
|
IAudioClient_Release(self->client);
|
|
self->client = NULL;
|
|
|
|
hr = IMMDevice_Activate(self->mmdev, &IID_IAudioClient, CLSCTX_INPROC_SERVER, NULL, &ptr);
|
|
if(FAILED(hr))
|
|
{
|
|
ERR("Failed to reactivate audio client: 0x%08lx\n", hr);
|
|
return hr;
|
|
}
|
|
self->client = ptr;
|
|
|
|
hr = IAudioClient_GetMixFormat(self->client, &wfx);
|
|
if(FAILED(hr))
|
|
{
|
|
ERR("Failed to get mix format: 0x%08lx\n", hr);
|
|
return hr;
|
|
}
|
|
|
|
if(!MakeExtensible(&OutputType, wfx))
|
|
{
|
|
CoTaskMemFree(wfx);
|
|
return E_FAIL;
|
|
}
|
|
CoTaskMemFree(wfx);
|
|
wfx = NULL;
|
|
|
|
buf_time = ((REFERENCE_TIME)device->UpdateSize*device->NumUpdates*10000000 +
|
|
device->Frequency-1) / device->Frequency;
|
|
|
|
if(!(device->Flags&DEVICE_FREQUENCY_REQUEST))
|
|
device->Frequency = OutputType.Format.nSamplesPerSec;
|
|
if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
|
|
{
|
|
if(OutputType.Format.nChannels == 1 && OutputType.dwChannelMask == MONO)
|
|
device->FmtChans = DevFmtMono;
|
|
else if(OutputType.Format.nChannels == 2 && OutputType.dwChannelMask == STEREO)
|
|
device->FmtChans = DevFmtStereo;
|
|
else if(OutputType.Format.nChannels == 4 && OutputType.dwChannelMask == QUAD)
|
|
device->FmtChans = DevFmtQuad;
|
|
else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1)
|
|
device->FmtChans = DevFmtX51;
|
|
else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1REAR)
|
|
device->FmtChans = DevFmtX51Rear;
|
|
else if(OutputType.Format.nChannels == 7 && OutputType.dwChannelMask == X6DOT1)
|
|
device->FmtChans = DevFmtX61;
|
|
else if(OutputType.Format.nChannels == 8 && OutputType.dwChannelMask == X7DOT1)
|
|
device->FmtChans = DevFmtX71;
|
|
else
|
|
ERR("Unhandled channel config: %d -- 0x%08lx\n", OutputType.Format.nChannels, OutputType.dwChannelMask);
|
|
}
|
|
|
|
switch(device->FmtChans)
|
|
{
|
|
case DevFmtMono:
|
|
OutputType.Format.nChannels = 1;
|
|
OutputType.dwChannelMask = MONO;
|
|
break;
|
|
case DevFmtStereo:
|
|
OutputType.Format.nChannels = 2;
|
|
OutputType.dwChannelMask = STEREO;
|
|
break;
|
|
case DevFmtQuad:
|
|
OutputType.Format.nChannels = 4;
|
|
OutputType.dwChannelMask = QUAD;
|
|
break;
|
|
case DevFmtX51:
|
|
OutputType.Format.nChannels = 6;
|
|
OutputType.dwChannelMask = X5DOT1;
|
|
break;
|
|
case DevFmtX51Rear:
|
|
OutputType.Format.nChannels = 6;
|
|
OutputType.dwChannelMask = X5DOT1REAR;
|
|
break;
|
|
case DevFmtX61:
|
|
OutputType.Format.nChannels = 7;
|
|
OutputType.dwChannelMask = X6DOT1;
|
|
break;
|
|
case DevFmtX71:
|
|
OutputType.Format.nChannels = 8;
|
|
OutputType.dwChannelMask = X7DOT1;
|
|
break;
|
|
}
|
|
switch(device->FmtType)
|
|
{
|
|
case DevFmtByte:
|
|
device->FmtType = DevFmtUByte;
|
|
/* fall-through */
|
|
case DevFmtUByte:
|
|
OutputType.Format.wBitsPerSample = 8;
|
|
OutputType.Samples.wValidBitsPerSample = 8;
|
|
OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
|
|
break;
|
|
case DevFmtUShort:
|
|
device->FmtType = DevFmtShort;
|
|
/* fall-through */
|
|
case DevFmtShort:
|
|
OutputType.Format.wBitsPerSample = 16;
|
|
OutputType.Samples.wValidBitsPerSample = 16;
|
|
OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
|
|
break;
|
|
case DevFmtUInt:
|
|
device->FmtType = DevFmtInt;
|
|
/* fall-through */
|
|
case DevFmtInt:
|
|
OutputType.Format.wBitsPerSample = 32;
|
|
OutputType.Samples.wValidBitsPerSample = 32;
|
|
OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
|
|
break;
|
|
case DevFmtFloat:
|
|
OutputType.Format.wBitsPerSample = 32;
|
|
OutputType.Samples.wValidBitsPerSample = 32;
|
|
OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
|
|
break;
|
|
}
|
|
OutputType.Format.nSamplesPerSec = device->Frequency;
|
|
|
|
OutputType.Format.nBlockAlign = OutputType.Format.nChannels *
|
|
OutputType.Format.wBitsPerSample / 8;
|
|
OutputType.Format.nAvgBytesPerSec = OutputType.Format.nSamplesPerSec *
|
|
OutputType.Format.nBlockAlign;
|
|
|
|
hr = IAudioClient_IsFormatSupported(self->client, AUDCLNT_SHAREMODE_SHARED, &OutputType.Format, &wfx);
|
|
if(FAILED(hr))
|
|
{
|
|
ERR("Failed to check format support: 0x%08lx\n", hr);
|
|
hr = IAudioClient_GetMixFormat(self->client, &wfx);
|
|
}
|
|
if(FAILED(hr))
|
|
{
|
|
ERR("Failed to find a supported format: 0x%08lx\n", hr);
|
|
return hr;
|
|
}
|
|
|
|
if(wfx != NULL)
|
|
{
|
|
if(!MakeExtensible(&OutputType, wfx))
|
|
{
|
|
CoTaskMemFree(wfx);
|
|
return E_FAIL;
|
|
}
|
|
CoTaskMemFree(wfx);
|
|
wfx = NULL;
|
|
|
|
device->Frequency = OutputType.Format.nSamplesPerSec;
|
|
if(OutputType.Format.nChannels == 1 && OutputType.dwChannelMask == MONO)
|
|
device->FmtChans = DevFmtMono;
|
|
else if(OutputType.Format.nChannels == 2 && OutputType.dwChannelMask == STEREO)
|
|
device->FmtChans = DevFmtStereo;
|
|
else if(OutputType.Format.nChannels == 4 && OutputType.dwChannelMask == QUAD)
|
|
device->FmtChans = DevFmtQuad;
|
|
else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1)
|
|
device->FmtChans = DevFmtX51;
|
|
else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1REAR)
|
|
device->FmtChans = DevFmtX51Rear;
|
|
else if(OutputType.Format.nChannels == 7 && OutputType.dwChannelMask == X6DOT1)
|
|
device->FmtChans = DevFmtX61;
|
|
else if(OutputType.Format.nChannels == 8 && OutputType.dwChannelMask == X7DOT1)
|
|
device->FmtChans = DevFmtX71;
|
|
else
|
|
{
|
|
ERR("Unhandled extensible channels: %d -- 0x%08lx\n", OutputType.Format.nChannels, OutputType.dwChannelMask);
|
|
device->FmtChans = DevFmtStereo;
|
|
OutputType.Format.nChannels = 2;
|
|
OutputType.dwChannelMask = STEREO;
|
|
}
|
|
|
|
if(IsEqualGUID(&OutputType.SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))
|
|
{
|
|
if(OutputType.Format.wBitsPerSample == 8)
|
|
device->FmtType = DevFmtUByte;
|
|
else if(OutputType.Format.wBitsPerSample == 16)
|
|
device->FmtType = DevFmtShort;
|
|
else if(OutputType.Format.wBitsPerSample == 32)
|
|
device->FmtType = DevFmtInt;
|
|
else
|
|
{
|
|
device->FmtType = DevFmtShort;
|
|
OutputType.Format.wBitsPerSample = 16;
|
|
}
|
|
}
|
|
else if(IsEqualGUID(&OutputType.SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))
|
|
{
|
|
device->FmtType = DevFmtFloat;
|
|
OutputType.Format.wBitsPerSample = 32;
|
|
}
|
|
else
|
|
{
|
|
ERR("Unhandled format sub-type\n");
|
|
device->FmtType = DevFmtShort;
|
|
OutputType.Format.wBitsPerSample = 16;
|
|
OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
|
|
}
|
|
OutputType.Samples.wValidBitsPerSample = OutputType.Format.wBitsPerSample;
|
|
}
|
|
|
|
SetDefaultWFXChannelOrder(device);
|
|
|
|
hr = IAudioClient_Initialize(self->client, AUDCLNT_SHAREMODE_SHARED,
|
|
AUDCLNT_STREAMFLAGS_EVENTCALLBACK,
|
|
buf_time, 0, &OutputType.Format, NULL);
|
|
if(FAILED(hr))
|
|
{
|
|
ERR("Failed to initialize audio client: 0x%08lx\n", hr);
|
|
return hr;
|
|
}
|
|
|
|
hr = IAudioClient_GetDevicePeriod(self->client, &min_per, NULL);
|
|
if(SUCCEEDED(hr))
|
|
{
|
|
min_len = (UINT32)((min_per*device->Frequency + 10000000-1) / 10000000);
|
|
/* Find the nearest multiple of the period size to the update size */
|
|
if(min_len < device->UpdateSize)
|
|
min_len *= (device->UpdateSize + min_len/2)/min_len;
|
|
hr = IAudioClient_GetBufferSize(self->client, &buffer_len);
|
|
}
|
|
if(FAILED(hr))
|
|
{
|
|
ERR("Failed to get audio buffer info: 0x%08lx\n", hr);
|
|
return hr;
|
|
}
|
|
|
|
device->UpdateSize = min_len;
|
|
device->NumUpdates = buffer_len / device->UpdateSize;
|
|
if(device->NumUpdates <= 1)
|
|
{
|
|
ERR("Audio client returned buffer_len < period*2; expect break up\n");
|
|
device->NumUpdates = 2;
|
|
device->UpdateSize = buffer_len / device->NumUpdates;
|
|
}
|
|
|
|
hr = IAudioClient_SetEventHandle(self->client, self->NotifyEvent);
|
|
if(FAILED(hr))
|
|
{
|
|
ERR("Failed to set event handle: 0x%08lx\n", hr);
|
|
return hr;
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
static ALCboolean ALCmmdevPlayback_start(ALCmmdevPlayback *self)
|
|
{
|
|
ThreadRequest req = { self->MsgEvent, 0 };
|
|
HRESULT hr = E_FAIL;
|
|
|
|
if(PostThreadMessage(ThreadID, WM_USER_StartDevice, (WPARAM)&req, (LPARAM)STATIC_CAST(ALCmmdevProxy, self)))
|
|
hr = WaitForResponse(&req);
|
|
|
|
return SUCCEEDED(hr) ? ALC_TRUE : ALC_FALSE;
|
|
}
|
|
|
|
static HRESULT ALCmmdevPlayback_startProxy(ALCmmdevPlayback *self)
|
|
{
|
|
HRESULT hr;
|
|
void *ptr;
|
|
|
|
ResetEvent(self->NotifyEvent);
|
|
hr = IAudioClient_Start(self->client);
|
|
if(FAILED(hr))
|
|
ERR("Failed to start audio client: 0x%08lx\n", hr);
|
|
|
|
if(SUCCEEDED(hr))
|
|
hr = IAudioClient_GetService(self->client, &IID_IAudioRenderClient, &ptr);
|
|
if(SUCCEEDED(hr))
|
|
{
|
|
self->render = ptr;
|
|
self->killNow = 0;
|
|
if(althrd_create(&self->thread, ALCmmdevPlayback_mixerProc, self) != althrd_success)
|
|
{
|
|
if(self->render)
|
|
IAudioRenderClient_Release(self->render);
|
|
self->render = NULL;
|
|
IAudioClient_Stop(self->client);
|
|
ERR("Failed to start thread\n");
|
|
hr = E_FAIL;
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
static void ALCmmdevPlayback_stop(ALCmmdevPlayback *self)
|
|
{
|
|
ThreadRequest req = { self->MsgEvent, 0 };
|
|
if(PostThreadMessage(ThreadID, WM_USER_StopDevice, (WPARAM)&req, (LPARAM)STATIC_CAST(ALCmmdevProxy, self)))
|
|
(void)WaitForResponse(&req);
|
|
}
|
|
|
|
static void ALCmmdevPlayback_stopProxy(ALCmmdevPlayback *self)
|
|
{
|
|
int res;
|
|
|
|
if(!self->render)
|
|
return;
|
|
|
|
self->killNow = 1;
|
|
althrd_join(self->thread, &res);
|
|
|
|
IAudioRenderClient_Release(self->render);
|
|
self->render = NULL;
|
|
IAudioClient_Stop(self->client);
|
|
}
|
|
|
|
|
|
static ALint64 ALCmmdevPlayback_getLatency(ALCmmdevPlayback *self)
|
|
{
|
|
ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
|
|
return (ALint64)self->Padding * 1000000000 / device->Frequency;
|
|
}
|
|
|
|
|
|
static inline void AppendAllDevicesList2(const DevMap *entry)
|
|
{ AppendAllDevicesList(al_string_get_cstr(entry->name)); }
|
|
static inline void AppendCaptureDeviceList2(const DevMap *entry)
|
|
{ AppendCaptureDeviceList(al_string_get_cstr(entry->name)); }
|
|
|
|
typedef struct ALCmmdevBackendFactory {
|
|
DERIVE_FROM_TYPE(ALCbackendFactory);
|
|
} ALCmmdevBackendFactory;
|
|
#define ALCMMDEVBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCmmdevBackendFactory, ALCbackendFactory) } }
|
|
|
|
static ALCboolean ALCmmdevBackendFactory_init(ALCmmdevBackendFactory *self);
|
|
static void ALCmmdevBackendFactory_deinit(ALCmmdevBackendFactory *self);
|
|
static ALCboolean ALCmmdevBackendFactory_querySupport(ALCmmdevBackendFactory *self, ALCbackend_Type type);
|
|
static void ALCmmdevBackendFactory_probe(ALCmmdevBackendFactory *self, enum DevProbe type);
|
|
static ALCbackend* ALCmmdevBackendFactory_createBackend(ALCmmdevBackendFactory *self, ALCdevice *device, ALCbackend_Type type);
|
|
|
|
DEFINE_ALCBACKENDFACTORY_VTABLE(ALCmmdevBackendFactory);
|
|
|
|
|
|
static BOOL MMDevApiLoad(void)
|
|
{
|
|
static HRESULT InitResult;
|
|
if(!ThreadHdl)
|
|
{
|
|
ThreadRequest req;
|
|
InitResult = E_FAIL;
|
|
|
|
req.FinishedEvt = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
if(req.FinishedEvt == NULL)
|
|
ERR("Failed to create event: %lu\n", GetLastError());
|
|
else
|
|
{
|
|
ThreadHdl = CreateThread(NULL, 0, ALCmmdevProxy_messageHandler, &req, 0, &ThreadID);
|
|
if(ThreadHdl != NULL)
|
|
InitResult = WaitForResponse(&req);
|
|
CloseHandle(req.FinishedEvt);
|
|
}
|
|
}
|
|
return SUCCEEDED(InitResult);
|
|
}
|
|
|
|
static ALCboolean ALCmmdevBackendFactory_init(ALCmmdevBackendFactory* UNUSED(self))
|
|
{
|
|
VECTOR_INIT(PlaybackDevices);
|
|
VECTOR_INIT(CaptureDevices);
|
|
|
|
if(!MMDevApiLoad())
|
|
return ALC_FALSE;
|
|
return ALC_TRUE;
|
|
}
|
|
|
|
static void ALCmmdevBackendFactory_deinit(ALCmmdevBackendFactory* UNUSED(self))
|
|
{
|
|
clear_devlist(&PlaybackDevices);
|
|
VECTOR_DEINIT(PlaybackDevices);
|
|
|
|
clear_devlist(&CaptureDevices);
|
|
VECTOR_DEINIT(CaptureDevices);
|
|
|
|
if(ThreadHdl)
|
|
{
|
|
TRACE("Sending WM_QUIT to Thread %04lx\n", ThreadID);
|
|
PostThreadMessage(ThreadID, WM_QUIT, 0, 0);
|
|
CloseHandle(ThreadHdl);
|
|
ThreadHdl = NULL;
|
|
}
|
|
}
|
|
|
|
static ALCboolean ALCmmdevBackendFactory_querySupport(ALCmmdevBackendFactory* UNUSED(self), ALCbackend_Type type)
|
|
{
|
|
if(type == ALCbackend_Playback)
|
|
return ALC_TRUE;
|
|
return ALC_FALSE;
|
|
}
|
|
|
|
static void ALCmmdevBackendFactory_probe(ALCmmdevBackendFactory* UNUSED(self), enum DevProbe type)
|
|
{
|
|
ThreadRequest req = { NULL, 0 };
|
|
|
|
req.FinishedEvt = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
if(req.FinishedEvt == NULL)
|
|
ERR("Failed to create event: %lu\n", GetLastError());
|
|
else
|
|
{
|
|
HRESULT hr = E_FAIL;
|
|
if(PostThreadMessage(ThreadID, WM_USER_Enumerate, (WPARAM)&req, type))
|
|
hr = WaitForResponse(&req);
|
|
if(SUCCEEDED(hr)) switch(type)
|
|
{
|
|
case ALL_DEVICE_PROBE:
|
|
VECTOR_FOR_EACH(const DevMap, PlaybackDevices, AppendAllDevicesList2);
|
|
break;
|
|
|
|
case CAPTURE_DEVICE_PROBE:
|
|
VECTOR_FOR_EACH(const DevMap, CaptureDevices, AppendCaptureDeviceList2);
|
|
break;
|
|
}
|
|
CloseHandle(req.FinishedEvt);
|
|
req.FinishedEvt = NULL;
|
|
}
|
|
}
|
|
|
|
static ALCbackend* ALCmmdevBackendFactory_createBackend(ALCmmdevBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type)
|
|
{
|
|
if(type == ALCbackend_Playback)
|
|
{
|
|
ALCmmdevPlayback *backend;
|
|
|
|
backend = ALCmmdevPlayback_New(sizeof(*backend));
|
|
if(!backend) return NULL;
|
|
memset(backend, 0, sizeof(*backend));
|
|
|
|
ALCmmdevPlayback_Construct(backend, device);
|
|
|
|
return STATIC_CAST(ALCbackend, backend);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
ALCbackendFactory *ALCmmdevBackendFactory_getFactory(void)
|
|
{
|
|
static ALCmmdevBackendFactory factory = ALCMMDEVBACKENDFACTORY_INITIALIZER;
|
|
return STATIC_CAST(ALCbackendFactory, &factory);
|
|
}
|