umc_h264_parse_def.h

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.
//
*/

#ifndef __UMC_H264_PARSE_DEF_H__
#define __UMC_H264_PARSE_DEF_H__

#include "umc_defs.h"
#if defined (UMC_ENABLE_H264_SPLITTER)

#include "ippdefs.h"
#include "umc_structures.h"
#include "umc_media_data.h"

#include <vector>

namespace UMC
{

    // Simple buffer pointer
    typedef std::vector<Ipp8u> VEC_BUF;

    /**
    * NAL unit types from H.264 2003/05 Table 7-1
    */
    typedef enum H264NALUTypes
    {
        H264_NAL_SLICE_NON_IDR = 1,
        H264_NAL_SLICE_A       = 2,
        H264_NAL_SLICE_B       = 3,
        H264_NAL_SLICE_C       = 4,
        H264_NAL_SLICE_IDR     = 5,
        H264_NAL_SLICE_SEI     = 6,
        H264_NAL_SET_SEQ       = 7,
        H264_NAL_SET_PIC       = 8,
        H264_NAL_AU_DEL        = 9,
        H264_NAL_END_SEQ       = 10,
        H264_NAL_END_STM       = 11,
        H264_NAL_FIL_DATA      = 12,
        H264_NAL_SET_SEQ_EXT   = 13,
        H264_NAL_SLICE_NI_05   = 19
    } H264NALTypes;

    /**
     * Start octet of the NALU
     */
    struct H264NALUOctet
    {
        Ipp32u Type;
        Ipp32u NRI;

        H264NALUOctet()
        {
            Type = 0;
            NRI = 0;
        }

        void ReadOctet(Ipp8u * byte)
        {
            Type = (*byte) & 0x1f;
            NRI  = (*byte & 0x60) >> 5;
        }
    };

    /**
    * Sequence Set
    */
    struct H264SequenceSetParse
    {
        H264NALUOctet octet;

        Ipp32u seq_parameter_set_id;
        Ipp32u pic_order_cnt_type;
        Ipp32u frame_mbs_only_flag;
        Ipp32u delta_pic_order_always_zero_flag;
        Ipp32u log2_max_frame_num_minus4;
        Ipp32u log2_max_pic_order_cnt_lsb_minus4;
        Ipp32u pic_width_in_mbs_minus1;
        Ipp32u pic_height_in_map_units_minus1;
        Ipp32u frame_cropping_flag;
        Ipp32u frame_crop_left_offset;
        Ipp32u frame_crop_right_offset;
        Ipp32u frame_crop_top_offset;
        Ipp32u frame_crop_bottom_offset;

        VEC_BUF buffer;

        H264SequenceSetParse()
        {
            memset(this, 0, sizeof(H264SequenceSetParse));
        }
    };

    /**
    * Picture Set
    */
    struct H264PictureSetParse
    {
        H264NALUOctet octet;

        Ipp32u pic_parameter_set_id;
        Ipp32u seq_parameter_set_id;
        Ipp32u pic_order_present_flag;

        VEC_BUF buffer;

        H264PictureSetParse()
        {
            memset(this, 0, sizeof(H264PictureSetParse));
        }
    };

    /**
     * Slice header
     */
    struct H264SliceHeaderParse
    {
        bool is_valid;
        H264NALUOctet octet;

        Ipp32u first_mb_in_slice;
        Ipp32u slice_type;
        Ipp32u pic_parameter_set_id;
        Ipp32u frame_num;
        Ipp32u field_pic_flag;
        Ipp32u bottom_field_flag;
        Ipp32u idr_pic_id;
        Ipp32u pic_order_cnt_lsb;
        Ipp32s delta_pic_order_cnt_bottom;
        Ipp32s delta_pic_order_cnt[2];
        Ipp32u redundant_pic_cnt;

        H264SliceHeaderParse()
        {
            memset(this, 0, sizeof(H264SliceHeaderParse));
            is_valid = false;
        }
    };
} // namespace UMC

#endif // UMC_ENABLE_H264_SPLITTER
#endif // __UMC_H264_PARSE_DEF_H__