msm8974/mm-video-v4l2/vidc/vdec/inc/frameparser.h

/*--------------------------------------------------------------------------
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--------------------------------------------------------------------------*/
#ifndef FRAMEPARSER_H
#define FRAMEPARSER_H

#include "OMX_Core.h"
#include "OMX_QCOMExtns.h"
#include "h264_utils.h"
//#include <stdlib.h>

enum codec_type {
    CODEC_TYPE_MPEG4 = 0,
    CODEC_TYPE_DIVX = 0,
    CODEC_TYPE_H263 = 1,
    CODEC_TYPE_H264 = 2,
    CODEC_TYPE_VC1 = 3,
    CODEC_TYPE_MPEG2 = 4,
#ifdef _MSM8974_
    CODEC_TYPE_VP8 = 5,
    CODEC_TYPE_HEVC,
#endif
    CODEC_TYPE_MAX
};

enum state_start_code_parse {
    A0,
    A1,
    A2,
    A3,
    A4,
    A5
};

enum state_nal_parse {
    NAL_LENGTH_ACC,
    NAL_PARSING
};

class frame_parse
{

    public:
        H264_Utils *mutils;
        int init_start_codes (codec_type codec_type_parse);
        int parse_sc_frame (OMX_BUFFERHEADERTYPE *source,
                OMX_BUFFERHEADERTYPE *dest ,
                OMX_U32 *partialframe);
        int init_nal_length (unsigned int nal_length);
        int parse_h264_nallength (OMX_BUFFERHEADERTYPE *source,
                OMX_BUFFERHEADERTYPE *dest ,
                OMX_U32 *partialframe);
        void flush ();
        frame_parse ();
        ~frame_parse ();

    private:
        /*Variables for Start code based Parsing*/
        enum state_start_code_parse parse_state;
        unsigned char *start_code;
        unsigned char *mask_code;
        unsigned char last_byte_h263;
        unsigned char last_byte;
        bool header_found;
        bool skip_frame_boundary;

        /*Variables for NAL Length Parsing*/
        enum state_nal_parse state_nal;
        unsigned int nal_length;
        unsigned int accum_length;
        unsigned int bytes_tobeparsed;
        /*Functions to support additional start code parsing*/
        void parse_additional_start_code(OMX_U8 *psource, OMX_U32 *parsed_length);
        void check_skip_frame_boundary(OMX_U32 *partial_frame);
        void update_skip_frame();
};

#endif /* FRAMEPARSER_H */