VideoEncParams.cpp
资源名称:p2p_vod.rar [点击查看]
上传用户:liguizhu
上传日期:2015-11-01
资源大小:2422k
文件大小:3k
源码类别:
P2P编程
开发平台:
Visual C++
- /*
- * Openmysee
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
- #include "stdafx.h"
- #include "atlbase.h"
- #include "Dmo.h"
- #include "wmcodecconst.h"
- #include "wmcodeciface.h"
- #include "VideoEncParams.h"
- #include "macros.h"
- HRESULT CVideoEncParams::DefaultParams()
- {
- dwTag = WMCFOURCC_WMV3;
- fFrameRate = 29.97F;
- fIsVBR = FALSE;
- nBitrate = 0;
- nBufferDelay = 5000;
- nKeyDist = 8;
- nProfile = P_MAIN;
- nQuality = 75;
- nVBRQuality = 98;
- // Get the complexity levels for the codec.
- HRESULT hr = GetComplexitySettings(&ComplexityLive,
- &ComplexityOffline,
- &ComplexityMax);
- if(SUCCEEDED(hr))
- {
- nComplexity = ComplexityLive;
- }
- return hr;
- }
- // Get the encoder complexity values for the codec.
- HRESULT CVideoEncParams::GetComplexitySettings(DWORD* pLive, DWORD* pOffline, DWORD* pMax)
- {
- HRESULT hr = S_OK;
- CComPtr<IMediaObject> pDMO;
- CComPtr<IWMCodecProps> pCodecProps;
- DWORD cbValue = sizeof(DWORD);
- WMT_PROP_DATATYPE dataType;
- // Create a video encoder DMO.
- hr = CoCreateInstance(CLSID_CWMVEncMediaObject2,
- NULL,
- CLSCTX_INPROC_SERVER,
- IID_IMediaObject,
- (void**)&pDMO);
- ON_FAIL("Could not create the encoder DMO.", hr);
- // Get the codec properties interface.
- hr = pDMO->QueryInterface(IID_IWMCodecProps, (void**)&pCodecProps);
- ON_FAIL("Could not get the codec props interface.", hr);
- // Get the setting for live encoding.
- hr = pCodecProps->GetCodecProp(WMCFOURCC_WMV3,
- g_wszWMVCComplexityExLive,
- &dataType,
- (BYTE*)pLive,
- &cbValue);
- ON_FAIL("Could not get the live complexity setting.", hr);
- // Get the setting for offline encoding.
- hr = pCodecProps->GetCodecProp(WMCFOURCC_WMV3,
- g_wszWMVCComplexityExOffline,
- &dataType,
- (BYTE*)pOffline,
- &cbValue);
- ON_FAIL("Could not get the offline complexity setting.", hr);
- // Get the maximum complexity setting.
- hr = pCodecProps->GetCodecProp(WMCFOURCC_WMV3,
- g_wszWMVCComplexityExMax,
- &dataType,
- (BYTE*)pMax,
- &cbValue);
- ON_FAIL("Could not get the maximum complexity setting.", hr);
- return hr;
- }