umc_avi_index.h

来自「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」· C头文件 代码 · 共 63 行

/*//////////////////////////////////////////////////////////////////////////////
//
//                  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_AVI_INDEX_H__
#define __UMC_AVI_INDEX_H__
#include "umc_structures.h"
#include "umc_avi_chunk.h"

namespace UMC
{
    class AVIIndex
    {
        DYNAMIC_CAST_DECL_BASE(AVIIndex)
    public:
        struct IndTblEntry
        {
            tFOURCC ChunkType;
            vm_var32 ulFlags;
            vm_var32 uiPos;
            vm_var32 uiSize;
            inline void SwapBigEndian()
            {
                ChunkType   = BIG_ENDIAN_SWAP32(ChunkType);
                ulFlags     = BIG_ENDIAN_SWAP32(ulFlags);
                uiPos       = BIG_ENDIAN_SWAP32(uiPos);
                uiSize      = BIG_ENDIAN_SWAP32(uiSize);
            }
        };

        AVIIndex();
        virtual ~AVIIndex();
        Status  Init(AVIChunk& rSrcChunk);
        Status  GetMaxChunkSize(const tFOURCC ChunkType, vm_var32& ruiSize);
        inline unsigned int GetIndexTableSize();
        Status  GetIndexTableEntry(vm_var32 uiIndex, IndTblEntry& rEntry);
        Status  GetFrameByPos(double dfPos,
                              tFOURCC fourccCode,
                              vm_sizet& ruiFilePos,
                              vm_var32& ruiFrameNum,
                              vm_sizet& ruiCurStreamByte);
    protected:
        IndTblEntry* m_pIndTable;
        vm_var32     m_uiTblSize;

        void    Close();
        Status  GenerateIndexTable(AVIChunk& rSrcChunk);
    }; // class AVIIndex

    unsigned int
    AVIIndex::GetIndexTableSize()
    {   return m_uiTblSize; }

} // namespace UMC
#endif // __UMC_AVI_INDEX_H__