generic-library/webrtc
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Convert audio layer to WAV on Vista RTM(without any Service Pack)

Browse Source 
Review URL: https://webrtc-codereview.appspot.com/397001

git-svn-id: http://webrtc.googlecode.com/svn/trunk@1702 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
braveyao@webrtc.org 2012-02-16 03:21:05 +00:00
parent d6d014ff12
commit 590e5eb283
1 changed files with 42 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
src/modules/audio_device/main/source/win/audio_device_core_win.cc
View File

@ -191,7 +191,46 @@ bool AudioDeviceWindowsCore::CoreAudioIsSupported()
TCHAR buf[MAXERRORLENGTH]; TCHAR buf[MAXERRORLENGTH];
TCHAR errorText[MAXERRORLENGTH]; TCHAR errorText[MAXERRORLENGTH];
// 1) Initializes the COM library for use by the calling thread. // 1) Check if Windows version is Vista SP1 or later.
//
// CoreAudio is only available on Vista SP1 and later.
//
OSVERSIONINFOEX osvi;
DWORDLONG dwlConditionMask = 0;
int op = VER_LESS_EQUAL;
// Initialize the OSVERSIONINFOEX structure.
ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
osvi.dwMajorVersion = 6;
osvi.dwMinorVersion = 0;
osvi.wServicePackMajor = 0;
osvi.wServicePackMinor = 0;
osvi.wProductType = VER_NT_WORKSTATION;
// Initialize the condition mask.
VER_SET_CONDITION(dwlConditionMask, VER_MAJORVERSION, op);
VER_SET_CONDITION(dwlConditionMask, VER_MINORVERSION, op);
VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMAJOR, op);
VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMINOR, op);
VER_SET_CONDITION(dwlConditionMask, VER_PRODUCT_TYPE, VER_EQUAL);
DWORD dwTypeMask = VER_MAJORVERSION | VER_MINORVERSION |
VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR |
VER_PRODUCT_TYPE;
// Perform the test.
BOOL isVistaRTMorXP = VerifyVersionInfo(&osvi, dwTypeMask,
dwlConditionMask);
if (isVistaRTMorXP != 0)
{
WEBRTC_TRACE(kTraceStateInfo, kTraceAudioDevice, -1,
"*** Windows Core Audio is only supported on Vista SP1 or later "
"=> will revert to the Wave API ***");
return false;
}
// 2) Initializes the COM library for use by the calling thread.
// The COM init wrapper sets the thread's concurrency model to MTA, // The COM init wrapper sets the thread's concurrency model to MTA,
// and creates a new apartment for the thread if one is required. The // and creates a new apartment for the thread if one is required. The
@ -205,7 +244,7 @@ bool AudioDeviceWindowsCore::CoreAudioIsSupported()
return false; return false;
} }
// 2) Check if the MMDevice API is available. // 3) Check if the MMDevice API is available.
// //
// The Windows Multimedia Device (MMDevice) API enables audio clients to // The Windows Multimedia Device (MMDevice) API enables audio clients to
// discover audio endpoint devices, determine their capabilities, and create // discover audio endpoint devices, determine their capabilities, and create
@ -278,7 +317,7 @@ bool AudioDeviceWindowsCore::CoreAudioIsSupported()
SAFE_RELEASE(pIMMD); SAFE_RELEASE(pIMMD);
} }
// 3) Verify that we can create and initialize our Core Audio class. // 4) Verify that we can create and initialize our Core Audio class.
// //
// Also, perform a limited "API test" to ensure that Core Audio is supported for all devices. // Also, perform a limited "API test" to ensure that Core Audio is supported for all devices.
// //