diff options
author | chai <chaifix@163.com> | 2019-03-19 23:06:27 +0800 |
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committer | chai <chaifix@163.com> | 2019-03-19 23:06:27 +0800 |
commit | 1497dccd63a84b7ee2b229b1ad9c5c02718f2a78 (patch) | |
tree | f8d1bff50da13e126d08c7345653e002e293202d /Source/3rdParty/SDL2/src/audio/wasapi/SDL_wasapi_win32.c | |
parent | 5e2a973516e0729b225da9de0b03015dc5854ac4 (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.c | 457 |
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 = { ¬ification_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 *) ¬ification_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 *) ¬ification_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: */ - |