mtwreg_video_render.cpp

这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数就可以编译该代码.

/*
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//       Copyright(c) 2003-2005 Intel Corporation. All Rights Reserved.
//
*/

#include "mtwreg_video_render.h"

#if defined(UMC_ENABLE_MTWGX_VIDEO_RENDER)

#include "vm_debug.h"
#include "umc_video_data.h"
#include "windows.h"

namespace UMC
{

MTWREGVideoRender::MTWREGVideoRender():
    m_pvVideoMemPtr(NULL),
    m_uiScreenWidth(640),
    m_uiScreenHeight(480),
    m_uiPitch(640 * 2)
{

} // MTWREGVideoRender::MTWREGVideoRender():

MTWREGVideoRender::~MTWREGVideoRender()
{
    Close();

} // MTWREGVideoRender::~MTWREGVideoRender()

// Terminate the render
Status MTWREGVideoRender::Close()
{
    Status umcRes = MobileVideoRender::Close();
    m_pvVideoMemPtr = NULL;
    return umcRes;

} // Status MTWREGVideoRender::Close()

// Initialize the render, return false if failed, call Close anyway
Status MTWREGVideoRender::Init(MediaReceiverParams* pInit)
{
    Status umcRes = UMC_OK;
    VideoRenderParams *pParams = DynamicCast<VideoRenderParams>(pInit);

    if (NULL == pParams)
        umcRes = UMC_NULL_PTR;

    if (UMC_OK == umcRes)
        umcRes = MobileVideoRender::Init(pInit);

    HKEY hKey = 0;
    if (UMC_OK == umcRes &&
        ERROR_SUCCESS != RegOpenKeyEx(HKEY_LOCAL_MACHINE,
                                      VM_STRING("LCDDriver"),
                                      0,
                                      KEY_QUERY_VALUE,
                                      &hKey))
    {
        umcRes = UMC_OPERATION_FAILED;
    }

    DWORD dwBufSize = sizeof(m_pvVideoMemPtr);
    if (UMC_OK == umcRes &&
        ERROR_SUCCESS != RegQueryValueEx(hKey,
                                         VM_STRING("BaseFrameAddr"),
                                         NULL,
                                         NULL,
                                         (LPBYTE)&m_pvVideoMemPtr,
                                         &dwBufSize))
    {
        umcRes = UMC_OPERATION_FAILED;
    }

    if (0 != hKey)
        RegCloseKey(hKey);

    if (UMC_OK != umcRes)
        Close();

    return umcRes;

} // Status MTWREGVideoRender::Init(MediaReceiverParams* pInit)

Status MTWREGVideoRender::LockInputBuffer(MediaData* pInData)
{
    Status umcRes = UMC_OK;
    VideoData *pVideoData = DynamicCast<VideoData>(pInData);

    if (NULL == pVideoData)
        umcRes = UMC_NULL_PTR;

    if (UMC_OK == umcRes && NULL == m_pvVideoMemPtr)
        umcRes = UMC_NOT_INITIALIZED;

    if (UMC_OK == umcRes)
    {
        while (VM_TIMEOUT == m_ReadySema.Wait(1000))
        {
            if(m_bStopFlag || m_dfFrameTime == -1.0)
            {
                umcRes = UMC_END_OF_STREAM;
                break;
            }
        }
    }

    if (UMC_OK == umcRes)
    {
        pVideoData->SetDest(m_pvVideoMemPtr);
        pVideoData->SetPitch(m_uiPitch);
    }
    else
    {
        pVideoData->SetDest(NULL);
        pVideoData->SetPitch(0);
    }

    return umcRes;

} // Status MTWREGVideoRender::LockInputBuffer(MediaData* pInData)

Status MTWREGVideoRender::UnLockInputBuffer(MediaData *pInData, Status StreamStatus)
{
    Status umcRes = UMC_OK;
    VideoData* pVideoData = DynamicCast<VideoData, MediaData>(pInData);

    if (NULL == pVideoData)
        umcRes = UMC_NULL_PTR;

    if (UMC_OK == umcRes)
    {
        double dfEndTime;
        pVideoData->GetTime(m_dfFrameTime, dfEndTime);
        umcRes = m_DoneSema.Signal();
    }

    if (UMC_END_OF_STREAM == StreamStatus)
        Stop();

    return umcRes;

} // Status MTWREGVideoRender::UnLockInputBuffer(MediaData *pInData, Status StreamStatus)

} // namespace UMC

#endif // defined(UMC_ENABLE_MTWGX_VIDEO_RENDER)