null_video_renderer.cpp

audio-video-codecs.rar语音编解码器

/*
 *
 *                  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) 2003-2007 Intel Corporation. All Rights Reserved.
 *
 */

#include "null_video_renderer.h"

namespace UMC
{

#define MODULE          "NULLVideoRender:"
#define FUNCTION        "<Undefined Function>"
#define DBG_SET(msg)    VIDEO_DRV_DBG_SET   (MODULE, FUNCTION, msg)

NULLVideoRender::NULLVideoRender(void)
{
#undef  FUNCTION
#define FUNCTION "NULLVideoRender"
    DBG_SET("+");
    DBG_SET("-");
}

NULLVideoRender::~NULLVideoRender(void)
{
#undef  FUNCTION
#define FUNCTION "~NULLVideoRender"
    DBG_SET("+");
    Close();
    DBG_SET("-");
}

Status NULLVideoRender::Init(MediaReceiverParams* pInit)
{
#undef  FUNCTION
#define FUNCTION "Init"
    DBG_SET("+");
    Status                      umcRes  = UMC_OK;
    VideoRenderParams*          pParams = DynamicCast<VideoRenderParams>(pInit);
    UnifiedVideoRenderParams    UnifiedParams;
    NULLVideoDrvParams          DrvParams;
    VideoDrvVideoMemInfo        sMemInfo;
    size_t                      nPitch = 0, nImageSize = 0, nAlignment = VIDEO_DRV_ALIGN_BYTE;

    if (NULL == pParams)
    {
        umcRes = UMC_ERR_NULL_PTR;
    }
    if (UMC_OK == umcRes)
    {
        // NOTE: next Init will be removed in future.
        if (NONE == pParams->out_data_template.GetColorFormat())
            umcRes = m_OutDataTemplate.Init(pParams->info.width,
                                            pParams->info.height,
                                            pParams->color_format);
        else
            m_OutDataTemplate = pParams->out_data_template;
        nPitch     = m_OutDataTemplate.GetPlanePitch(0);
        nImageSize = m_OutDataTemplate.GetMappingSize();
        nAlignment = m_OutDataTemplate.GetAlignment();
    }
    if (UMC_OK == umcRes)
    {
        /* Copying parameters specified in <pParams> to <UnifiedParams>. */
        UnifiedParams = *pParams;
        /* Setting SDL driver specification. */
        UnifiedParams.m_pDrvSpec    = (VideoDrvSpec*) &NULLVideoDrvSpec;
        DrvParams.common.img_width  = m_OutDataTemplate.GetWidth();
        DrvParams.common.img_height = m_OutDataTemplate.GetHeight();
        DrvParams.common.win_rect.x = pParams->disp.left;
        DrvParams.common.win_rect.y = pParams->disp.top;
        DrvParams.common.win_rect.w = pParams->disp.right  - pParams->disp.left;
        DrvParams.common.win_rect.h = pParams->disp.bottom - pParams->disp.top;
        /* Setting SDL driver parameters. */
        UnifiedParams.m_pDrvParams  = &DrvParams;
        /* Setting video memory specification. */
        UnifiedParams.m_VideoMemType    = VideoDrvVideoMemInternal;
        sMemInfo.m_pVideoMem            = NULL;
        sMemInfo.m_nMemSize             = 0;
        sMemInfo.m_nAlignment           = nAlignment;
        sMemInfo.m_nPitch               = nPitch;
        sMemInfo.m_nBufSize             = nImageSize;
        UnifiedParams.m_pVideoMemInfo   = &sMemInfo;
    }
    if (UMC_OK == umcRes)
    {
        umcRes = UnifiedVideoRender::Init(&UnifiedParams);
    }
    DBG_SET("-");
    return umcRes;

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

} // namespace UMC