a9b74ad716
BUG=1662 R=wu@webrtc.org Review URL: https://webrtc-codereview.appspot.com/1788004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4337 4adac7df-926f-26a2-2b94-8c16560cd09d
120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include <initguid.h> // Must come before the help_functions_ds.h include so
|
|
// that DEFINE_GUID() entries will be defined in this
|
|
// object file.
|
|
|
|
#include "webrtc/modules/video_capture/windows/help_functions_ds.h"
|
|
|
|
#include <cguid.h>
|
|
|
|
namespace webrtc
|
|
{
|
|
namespace videocapturemodule
|
|
{
|
|
// This returns minimum :), which will give max frame rate...
|
|
LONGLONG GetMaxOfFrameArray(LONGLONG *maxFps, long size)
|
|
{
|
|
LONGLONG maxFPS = maxFps[0];
|
|
for (int i = 0; i < size; i++)
|
|
{
|
|
if (maxFPS > maxFps[i])
|
|
maxFPS = maxFps[i];
|
|
}
|
|
return maxFPS;
|
|
}
|
|
|
|
IPin* GetInputPin(IBaseFilter* filter)
|
|
{
|
|
HRESULT hr;
|
|
IPin* pin = NULL;
|
|
IEnumPins* pPinEnum = NULL;
|
|
filter->EnumPins(&pPinEnum);
|
|
if (pPinEnum == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
// get first unconnected pin
|
|
hr = pPinEnum->Reset(); // set to first pin
|
|
|
|
while (S_OK == pPinEnum->Next(1, &pin, NULL))
|
|
{
|
|
PIN_DIRECTION pPinDir;
|
|
pin->QueryDirection(&pPinDir);
|
|
if (PINDIR_INPUT == pPinDir) // This is an input pin
|
|
{
|
|
IPin* tempPin = NULL;
|
|
if (S_OK != pin->ConnectedTo(&tempPin)) // The pint is not connected
|
|
{
|
|
pPinEnum->Release();
|
|
return pin;
|
|
}
|
|
}
|
|
pin->Release();
|
|
}
|
|
pPinEnum->Release();
|
|
return NULL;
|
|
}
|
|
|
|
IPin* GetOutputPin(IBaseFilter* filter, REFGUID Category)
|
|
{
|
|
HRESULT hr;
|
|
IPin* pin = NULL;
|
|
IEnumPins* pPinEnum = NULL;
|
|
filter->EnumPins(&pPinEnum);
|
|
if (pPinEnum == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
// get first unconnected pin
|
|
hr = pPinEnum->Reset(); // set to first pin
|
|
while (S_OK == pPinEnum->Next(1, &pin, NULL))
|
|
{
|
|
PIN_DIRECTION pPinDir;
|
|
pin->QueryDirection(&pPinDir);
|
|
if (PINDIR_OUTPUT == pPinDir) // This is an output pin
|
|
{
|
|
if (Category == GUID_NULL || PinMatchesCategory(pin, Category))
|
|
{
|
|
pPinEnum->Release();
|
|
return pin;
|
|
}
|
|
}
|
|
pin->Release();
|
|
pin = NULL;
|
|
}
|
|
pPinEnum->Release();
|
|
return NULL;
|
|
}
|
|
|
|
BOOL PinMatchesCategory(IPin *pPin, REFGUID Category)
|
|
{
|
|
BOOL bFound = FALSE;
|
|
IKsPropertySet *pKs = NULL;
|
|
HRESULT hr = pPin->QueryInterface(IID_PPV_ARGS(&pKs));
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
GUID PinCategory;
|
|
DWORD cbReturned;
|
|
hr = pKs->Get(AMPROPSETID_Pin, AMPROPERTY_PIN_CATEGORY, NULL, 0, &PinCategory,
|
|
sizeof(GUID), &cbReturned);
|
|
if (SUCCEEDED(hr) && (cbReturned == sizeof(GUID)))
|
|
{
|
|
bFound = (PinCategory == Category);
|
|
}
|
|
pKs->Release();
|
|
}
|
|
return bFound;
|
|
}
|
|
} // namespace videocapturemodule
|
|
} // namespace webrtc
|