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authorchai <chaifix@163.com>2019-03-19 23:06:27 +0800
committerchai <chaifix@163.com>2019-03-19 23:06:27 +0800
commit1497dccd63a84b7ee2b229b1ad9c5c02718f2a78 (patch)
treef8d1bff50da13e126d08c7345653e002e293202d /Source/3rdParty/SDL2/src/audio/wasapi/SDL_wasapi_win32.c
parent5e2a973516e0729b225da9de0b03015dc5854ac4 (diff)
*rename
Diffstat (limited to 'Source/3rdParty/SDL2/src/audio/wasapi/SDL_wasapi_win32.c')
-rw-r--r--Source/3rdParty/SDL2/src/audio/wasapi/SDL_wasapi_win32.c457
1 files changed, 0 insertions, 457 deletions
diff --git a/Source/3rdParty/SDL2/src/audio/wasapi/SDL_wasapi_win32.c b/Source/3rdParty/SDL2/src/audio/wasapi/SDL_wasapi_win32.c
deleted file mode 100644
index 9d7c159..0000000
--- a/Source/3rdParty/SDL2/src/audio/wasapi/SDL_wasapi_win32.c
+++ /dev/null
@@ -1,457 +0,0 @@
-/*
- Simple DirectMedia Layer
- Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-*/
-
-#include "../../SDL_internal.h"
-
-/* This is code that Windows uses to talk to WASAPI-related system APIs.
- This is for non-WinRT desktop apps. The C++/CX implementation of these
- functions, exclusive to WinRT, are in SDL_wasapi_winrt.cpp.
- The code in SDL_wasapi.c is used by both standard Windows and WinRT builds
- to deal with audio and calls into these functions. */
-
-#if SDL_AUDIO_DRIVER_WASAPI && !defined(__WINRT__)
-
-#include "../../core/windows/SDL_windows.h"
-#include "SDL_audio.h"
-#include "SDL_timer.h"
-#include "../SDL_audio_c.h"
-#include "../SDL_sysaudio.h"
-#include "SDL_assert.h"
-#include "SDL_log.h"
-
-#define COBJMACROS
-#include <mmdeviceapi.h>
-#include <audioclient.h>
-
-#include "SDL_wasapi.h"
-
-static const ERole SDL_WASAPI_role = eConsole; /* !!! FIXME: should this be eMultimedia? Should be a hint? */
-
-/* This is global to the WASAPI target, to handle hotplug and default device lookup. */
-static IMMDeviceEnumerator *enumerator = NULL;
-
-/* PropVariantInit() is an inline function/macro in PropIdl.h that calls the C runtime's memset() directly. Use ours instead, to avoid dependency. */
-#ifdef PropVariantInit
-#undef PropVariantInit
-#endif
-#define PropVariantInit(p) SDL_zerop(p)
-
-/* handle to Avrt.dll--Vista and later!--for flagging the callback thread as "Pro Audio" (low latency). */
-static HMODULE libavrt = NULL;
-typedef HANDLE(WINAPI *pfnAvSetMmThreadCharacteristicsW)(LPWSTR, LPDWORD);
-typedef BOOL(WINAPI *pfnAvRevertMmThreadCharacteristics)(HANDLE);
-static pfnAvSetMmThreadCharacteristicsW pAvSetMmThreadCharacteristicsW = NULL;
-static pfnAvRevertMmThreadCharacteristics pAvRevertMmThreadCharacteristics = NULL;
-
-/* Some GUIDs we need to know without linking to libraries that aren't available before Vista. */
-static const CLSID SDL_CLSID_MMDeviceEnumerator = { 0xbcde0395, 0xe52f, 0x467c,{ 0x8e, 0x3d, 0xc4, 0x57, 0x92, 0x91, 0x69, 0x2e } };
-static const IID SDL_IID_IMMDeviceEnumerator = { 0xa95664d2, 0x9614, 0x4f35,{ 0xa7, 0x46, 0xde, 0x8d, 0xb6, 0x36, 0x17, 0xe6 } };
-static const IID SDL_IID_IMMNotificationClient = { 0x7991eec9, 0x7e89, 0x4d85,{ 0x83, 0x90, 0x6c, 0x70, 0x3c, 0xec, 0x60, 0xc0 } };
-static const IID SDL_IID_IMMEndpoint = { 0x1be09788, 0x6894, 0x4089,{ 0x85, 0x86, 0x9a, 0x2a, 0x6c, 0x26, 0x5a, 0xc5 } };
-static const IID SDL_IID_IAudioClient = { 0x1cb9ad4c, 0xdbfa, 0x4c32,{ 0xb1, 0x78, 0xc2, 0xf5, 0x68, 0xa7, 0x03, 0xb2 } };
-static const PROPERTYKEY SDL_PKEY_Device_FriendlyName = { { 0xa45c254e, 0xdf1c, 0x4efd,{ 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, } }, 14 };
-
-
-static char *
-GetWasapiDeviceName(IMMDevice *device)
-{
- /* PKEY_Device_FriendlyName gives you "Speakers (SoundBlaster Pro)" which drives me nuts. I'd rather it be
- "SoundBlaster Pro (Speakers)" but I guess that's developers vs users. Windows uses the FriendlyName in
- its own UIs, like Volume Control, etc. */
- char *utf8dev = NULL;
- IPropertyStore *props = NULL;
- if (SUCCEEDED(IMMDevice_OpenPropertyStore(device, STGM_READ, &props))) {
- PROPVARIANT var;
- PropVariantInit(&var);
- if (SUCCEEDED(IPropertyStore_GetValue(props, &SDL_PKEY_Device_FriendlyName, &var))) {
- utf8dev = WIN_StringToUTF8(var.pwszVal);
- }
- PropVariantClear(&var);
- IPropertyStore_Release(props);
- }
- return utf8dev;
-}
-
-
-/* We need a COM subclass of IMMNotificationClient for hotplug support, which is
- easy in C++, but we have to tapdance more to make work in C.
- Thanks to this page for coaching on how to make this work:
- https://www.codeproject.com/Articles/13601/COM-in-plain-C */
-
-typedef struct SDLMMNotificationClient
-{
- const IMMNotificationClientVtbl *lpVtbl;
- SDL_atomic_t refcount;
-} SDLMMNotificationClient;
-
-static HRESULT STDMETHODCALLTYPE
-SDLMMNotificationClient_QueryInterface(IMMNotificationClient *this, REFIID iid, void **ppv)
-{
- if ((WIN_IsEqualIID(iid, &IID_IUnknown)) || (WIN_IsEqualIID(iid, &SDL_IID_IMMNotificationClient)))
- {
- *ppv = this;
- this->lpVtbl->AddRef(this);
- return S_OK;
- }
-
- *ppv = NULL;
- return E_NOINTERFACE;
-}
-
-static ULONG STDMETHODCALLTYPE
-SDLMMNotificationClient_AddRef(IMMNotificationClient *ithis)
-{
- SDLMMNotificationClient *this = (SDLMMNotificationClient *) ithis;
- return (ULONG) (SDL_AtomicIncRef(&this->refcount) + 1);
-}
-
-static ULONG STDMETHODCALLTYPE
-SDLMMNotificationClient_Release(IMMNotificationClient *ithis)
-{
- /* this is a static object; we don't ever free it. */
- SDLMMNotificationClient *this = (SDLMMNotificationClient *) ithis;
- const ULONG retval = SDL_AtomicDecRef(&this->refcount);
- if (retval == 0) {
- SDL_AtomicSet(&this->refcount, 0); /* uhh... */
- return 0;
- }
- return retval - 1;
-}
-
-/* These are the entry points called when WASAPI device endpoints change. */
-static HRESULT STDMETHODCALLTYPE
-SDLMMNotificationClient_OnDefaultDeviceChanged(IMMNotificationClient *ithis, EDataFlow flow, ERole role, LPCWSTR pwstrDeviceId)
-{
- if (role != SDL_WASAPI_role) {
- return S_OK; /* ignore it. */
- }
-
- /* Increment the "generation," so opened devices will pick this up in their threads. */
- switch (flow) {
- case eRender:
- SDL_AtomicAdd(&WASAPI_DefaultPlaybackGeneration, 1);
- break;
-
- case eCapture:
- SDL_AtomicAdd(&WASAPI_DefaultCaptureGeneration, 1);
- break;
-
- case eAll:
- SDL_AtomicAdd(&WASAPI_DefaultPlaybackGeneration, 1);
- SDL_AtomicAdd(&WASAPI_DefaultCaptureGeneration, 1);
- break;
-
- default:
- SDL_assert(!"uhoh, unexpected OnDefaultDeviceChange flow!");
- break;
- }
-
- return S_OK;
-}
-
-static HRESULT STDMETHODCALLTYPE
-SDLMMNotificationClient_OnDeviceAdded(IMMNotificationClient *ithis, LPCWSTR pwstrDeviceId)
-{
- /* we ignore this; devices added here then progress to ACTIVE, if appropriate, in
- OnDeviceStateChange, making that a better place to deal with device adds. More
- importantly: the first time you plug in a USB audio device, this callback will
- fire, but when you unplug it, it isn't removed (it's state changes to NOTPRESENT).
- Plugging it back in won't fire this callback again. */
- return S_OK;
-}
-
-static HRESULT STDMETHODCALLTYPE
-SDLMMNotificationClient_OnDeviceRemoved(IMMNotificationClient *ithis, LPCWSTR pwstrDeviceId)
-{
- /* See notes in OnDeviceAdded handler about why we ignore this. */
- return S_OK;
-}
-
-static HRESULT STDMETHODCALLTYPE
-SDLMMNotificationClient_OnDeviceStateChanged(IMMNotificationClient *ithis, LPCWSTR pwstrDeviceId, DWORD dwNewState)
-{
- IMMDevice *device = NULL;
-
- if (SUCCEEDED(IMMDeviceEnumerator_GetDevice(enumerator, pwstrDeviceId, &device))) {
- IMMEndpoint *endpoint = NULL;
- if (SUCCEEDED(IMMDevice_QueryInterface(device, &SDL_IID_IMMEndpoint, (void **) &endpoint))) {
- EDataFlow flow;
- if (SUCCEEDED(IMMEndpoint_GetDataFlow(endpoint, &flow))) {
- const SDL_bool iscapture = (flow == eCapture);
- if (dwNewState == DEVICE_STATE_ACTIVE) {
- char *utf8dev = GetWasapiDeviceName(device);
- if (utf8dev) {
- WASAPI_AddDevice(iscapture, utf8dev, pwstrDeviceId);
- SDL_free(utf8dev);
- }
- } else {
- WASAPI_RemoveDevice(iscapture, pwstrDeviceId);
- }
- }
- IMMEndpoint_Release(endpoint);
- }
- IMMDevice_Release(device);
- }
-
- return S_OK;
-}
-
-static HRESULT STDMETHODCALLTYPE
-SDLMMNotificationClient_OnPropertyValueChanged(IMMNotificationClient *this, LPCWSTR pwstrDeviceId, const PROPERTYKEY key)
-{
- return S_OK; /* we don't care about these. */
-}
-
-static const IMMNotificationClientVtbl notification_client_vtbl = {
- SDLMMNotificationClient_QueryInterface,
- SDLMMNotificationClient_AddRef,
- SDLMMNotificationClient_Release,
- SDLMMNotificationClient_OnDeviceStateChanged,
- SDLMMNotificationClient_OnDeviceAdded,
- SDLMMNotificationClient_OnDeviceRemoved,
- SDLMMNotificationClient_OnDefaultDeviceChanged,
- SDLMMNotificationClient_OnPropertyValueChanged
-};
-
-static SDLMMNotificationClient notification_client = { &notification_client_vtbl, { 1 } };
-
-
-int
-WASAPI_PlatformInit(void)
-{
- HRESULT ret;
-
- /* just skip the discussion with COM here. */
- if (!WIN_IsWindowsVistaOrGreater()) {
- return SDL_SetError("WASAPI support requires Windows Vista or later");
- }
-
- if (FAILED(WIN_CoInitialize())) {
- return SDL_SetError("WASAPI: CoInitialize() failed");
- }
-
- ret = CoCreateInstance(&SDL_CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &SDL_IID_IMMDeviceEnumerator, (LPVOID) &enumerator);
- if (FAILED(ret)) {
- WIN_CoUninitialize();
- return WIN_SetErrorFromHRESULT("WASAPI CoCreateInstance(MMDeviceEnumerator)", ret);
- }
-
- libavrt = LoadLibraryW(L"avrt.dll"); /* this library is available in Vista and later. No WinXP, so have to LoadLibrary to use it for now! */
- if (libavrt) {
- pAvSetMmThreadCharacteristicsW = (pfnAvSetMmThreadCharacteristicsW) GetProcAddress(libavrt, "AvSetMmThreadCharacteristicsW");
- pAvRevertMmThreadCharacteristics = (pfnAvRevertMmThreadCharacteristics) GetProcAddress(libavrt, "AvRevertMmThreadCharacteristics");
- }
-
- return 0;
-}
-
-void
-WASAPI_PlatformDeinit(void)
-{
- if (enumerator) {
- IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(enumerator, (IMMNotificationClient *) &notification_client);
- IMMDeviceEnumerator_Release(enumerator);
- enumerator = NULL;
- }
-
- if (libavrt) {
- FreeLibrary(libavrt);
- libavrt = NULL;
- }
-
- pAvSetMmThreadCharacteristicsW = NULL;
- pAvRevertMmThreadCharacteristics = NULL;
-
- WIN_CoUninitialize();
-}
-
-void
-WASAPI_PlatformThreadInit(_THIS)
-{
- /* this thread uses COM. */
- if (SUCCEEDED(WIN_CoInitialize())) { /* can't report errors, hope it worked! */
- this->hidden->coinitialized = SDL_TRUE;
- }
-
- /* Set this thread to very high "Pro Audio" priority. */
- if (pAvSetMmThreadCharacteristicsW) {
- DWORD idx = 0;
- this->hidden->task = pAvSetMmThreadCharacteristicsW(TEXT("Pro Audio"), &idx);
- }
-}
-
-void
-WASAPI_PlatformThreadDeinit(_THIS)
-{
- /* Set this thread back to normal priority. */
- if (this->hidden->task && pAvRevertMmThreadCharacteristics) {
- pAvRevertMmThreadCharacteristics(this->hidden->task);
- this->hidden->task = NULL;
- }
-
- if (this->hidden->coinitialized) {
- WIN_CoUninitialize();
- this->hidden->coinitialized = SDL_FALSE;
- }
-}
-
-int
-WASAPI_ActivateDevice(_THIS, const SDL_bool isrecovery)
-{
- LPCWSTR devid = this->hidden->devid;
- IMMDevice *device = NULL;
- HRESULT ret;
-
- if (devid == NULL) {
- const EDataFlow dataflow = this->iscapture ? eCapture : eRender;
- ret = IMMDeviceEnumerator_GetDefaultAudioEndpoint(enumerator, dataflow, SDL_WASAPI_role, &device);
- } else {
- ret = IMMDeviceEnumerator_GetDevice(enumerator, devid, &device);
- }
-
- if (FAILED(ret)) {
- SDL_assert(device == NULL);
- this->hidden->client = NULL;
- return WIN_SetErrorFromHRESULT("WASAPI can't find requested audio endpoint", ret);
- }
-
- /* this is not async in standard win32, yay! */
- ret = IMMDevice_Activate(device, &SDL_IID_IAudioClient, CLSCTX_ALL, NULL, (void **) &this->hidden->client);
- IMMDevice_Release(device);
-
- if (FAILED(ret)) {
- SDL_assert(this->hidden->client == NULL);
- return WIN_SetErrorFromHRESULT("WASAPI can't activate audio endpoint", ret);
- }
-
- SDL_assert(this->hidden->client != NULL);
- if (WASAPI_PrepDevice(this, isrecovery) == -1) { /* not async, fire it right away. */
- return -1;
- }
-
- return 0; /* good to go. */
-}
-
-
-typedef struct
-{
- LPWSTR devid;
- char *devname;
-} EndpointItem;
-
-static int sort_endpoints(const void *_a, const void *_b)
-{
- LPWSTR a = ((const EndpointItem *) _a)->devid;
- LPWSTR b = ((const EndpointItem *) _b)->devid;
- if (!a && b) {
- return -1;
- } else if (a && !b) {
- return 1;
- }
-
- while (SDL_TRUE) {
- if (*a < *b) {
- return -1;
- } else if (*a > *b) {
- return 1;
- } else if (*a == 0) {
- break;
- }
- a++;
- b++;
- }
-
- return 0;
-}
-
-static void
-WASAPI_EnumerateEndpointsForFlow(const SDL_bool iscapture)
-{
- IMMDeviceCollection *collection = NULL;
- EndpointItem *items;
- UINT i, total;
-
- /* Note that WASAPI separates "adapter devices" from "audio endpoint devices"
- ...one adapter device ("SoundBlaster Pro") might have multiple endpoint devices ("Speakers", "Line-Out"). */
-
- if (FAILED(IMMDeviceEnumerator_EnumAudioEndpoints(enumerator, iscapture ? eCapture : eRender, DEVICE_STATE_ACTIVE, &collection))) {
- return;
- }
-
- if (FAILED(IMMDeviceCollection_GetCount(collection, &total))) {
- IMMDeviceCollection_Release(collection);
- return;
- }
-
- items = (EndpointItem *) SDL_calloc(total, sizeof (EndpointItem));
- if (!items) {
- return; /* oh well. */
- }
-
- for (i = 0; i < total; i++) {
- EndpointItem *item = items + i;
- IMMDevice *device = NULL;
- if (SUCCEEDED(IMMDeviceCollection_Item(collection, i, &device))) {
- if (SUCCEEDED(IMMDevice_GetId(device, &item->devid))) {
- item->devname = GetWasapiDeviceName(device);
- }
- IMMDevice_Release(device);
- }
- }
-
- /* sort the list of devices by their guid so list is consistent between runs */
- SDL_qsort(items, total, sizeof (*items), sort_endpoints);
-
- /* Send the sorted list on to the SDL's higher level. */
- for (i = 0; i < total; i++) {
- EndpointItem *item = items + i;
- if ((item->devid) && (item->devname)) {
- WASAPI_AddDevice(iscapture, item->devname, item->devid);
- }
- SDL_free(item->devname);
- CoTaskMemFree(item->devid);
- }
-
- SDL_free(items);
- IMMDeviceCollection_Release(collection);
-}
-
-void
-WASAPI_EnumerateEndpoints(void)
-{
- WASAPI_EnumerateEndpointsForFlow(SDL_FALSE); /* playback */
- WASAPI_EnumerateEndpointsForFlow(SDL_TRUE); /* capture */
-
- /* if this fails, we just won't get hotplug events. Carry on anyhow. */
- IMMDeviceEnumerator_RegisterEndpointNotificationCallback(enumerator, (IMMNotificationClient *) &notification_client);
-}
-
-void
-WASAPI_PlatformDeleteActivationHandler(void *handler)
-{
- /* not asynchronous. */
- SDL_assert(!"This function should have only been called on WinRT.");
-}
-
-#endif /* SDL_AUDIO_DRIVER_WASAPI && !defined(__WINRT__) */
-
-/* vi: set ts=4 sw=4 expandtab: */
-