umc_video_decoder.h

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.
//
*/

#ifndef __UMC_VIDEO_DECODER_H__
#define __UMC_VIDEO_DECODER_H__

#include "umc_structures.h"
#include "umc_base_color_space_converter.h"
#include "umc_media_data.h"
#include "umc_base_codec.h"

namespace UMC
{

class VideoDecoderParams : public BaseCodecParams
{
    DYNAMIC_CAST_DECL(VideoDecoderParams, BaseCodecParams)

public:
    // Default constructor
    VideoDecoderParams();
    // Destructor
    virtual ~VideoDecoderParams();

    MediaData               *m_pData;
    VideoStreamInfo         info;                           // (VideoStreamInfo) compressed video info
    ColorFormat             cformat;                        // (ColorFormat) uncompressed frame format
    vm_var32                lFlags;                         // (vm_var32) decoding flag(s)
    vm_var32                uiLimitThreads;                 // (vm_var32) maximum number of decoding thread

    double                  dPlaybackRate;

    BaseColorSpaceConverter *lpConverter;                   // (BaseColorSpaceConverter*) pointer to color converter

    ColorConversionInfo     *lpConvertInit;                 // (ColorConversionInfo *) pointer to struct with conversion info
    ColorConversionInfo     *lpConvertInitPreview;          // (ColorConversionInfo *) pointer to second struct with conversion info
};


class VideoDecoder : public BaseCodec
{
    DYNAMIC_CAST_DECL(VideoDecoder, BaseCodec)

public:
    VideoDecoder(void)
        :m_pConverter(NULL)
    {}

    // Destructor
    virtual ~VideoDecoder(void){}

    // Initialize codec with specified parameter(s)
    virtual Status Init(BaseCodecParams *init) = 0;
    // Compress (decompress) next frame
    virtual Status GetFrame(MediaData *in, MediaData *out) = 0;
    // Get codec working (initialization) parameter(s)
    virtual Status GetInfo(BaseCodecParams *info);

    // Close all codec resources
    virtual Status Close() = 0;
    // Set codec to initial state
    virtual Status Reset() = 0;

    // Reset skip frame counter
    virtual Status ResetSkipCount() = 0;
    // Increment skip frame counter
    virtual Status  SkipVideoFrame(int) = 0;
    // Get skip frame counter statistic
    virtual vm_var32 GetSkipedFrame() = 0;

    virtual Status  SetParams(BaseCodecParams* params);

protected:

    VideoStreamInfo         m_ClipInfo;                         // (VideoStreamInfo) clip info
    ColorConversionParams   m_ConversionParam;                  // (ColorConversionParams) conversion parameters
    ColorConversionParams   m_ConversionParamPreview;           // (ColorConversionParams) conversion parameters
    BaseColorSpaceConverter* m_pConverter;                      // (BaseColorSpaceConverter *) pointer to color space converter
};

} // end namespace UMC

#endif // __UMC_VIDEO_DECODER_H__