inits.cpp

传输流分析

#include "main.h"
/*************************************************************************
	Initialisieren von Strukturen fuer S*N cc Compiler.
 
	Initialize structs for S*N cc compiler.
*************************************************************************/

void empty_video_struc (
        Video_struc *pointer)
{
        int i;

        pointer->stream_length	= 0;
        pointer->num_sequence 	= 0;
        pointer->num_seq_end	= 0;
        pointer->num_pictures 	= 0;
        pointer->num_groups   	= 0;
        for (i=0; i<4; i++) {
                pointer->num_frames[i] 	= 0;
                pointer->avg_frames[i]	= 0;
        }
        pointer->horizontal_size 	= 0;
        pointer->vertical_size	= 0;
        pointer->aspect_ratio 	= 0;
        pointer->picture_rate 	= 0;
        pointer->bit_rate		= 0;
        pointer->comp_avg_bit_rate	= 0;
        pointer->comp_max_bit_rate	= 0;
        pointer->vbv_buffer_size	= 0;
        pointer->CSPF		= 0;
        pointer->pulldown           = PULLDOWN_NONE;
        pointer->sh_length          = 0;
        for (i = 0; i < 256; i++)
                pointer->seq_hdr[i]       = 0;
        pointer->last_PTS.msb       = 0;
        pointer->last_PTS.lsb       = 0;
        pointer->last_PTS.reference_ext = 0;
        pointer->last_PTS.negative  = 0;
}

void empty_audio_struc (Audio_struc *pointer)
{
        int i;

        pointer->stream_length 	= 0;
        pointer->num_syncword 	= 0;
        for (i=0; i<2; i++) {
                pointer->num_frames [i]	= 0;
                pointer->size_frames[i]	= 0;
        }
        pointer->layer		= 0;
        pointer->protection 	= 0;
        pointer->bit_rate 		= 0;
        pointer->frequency 		= 0;
        pointer->mode 		= 0;
        pointer->mode_extension 	= 0;
        pointer->copyright      	= 0;
        pointer->original_copy  	= 0;
        pointer->emphasis		= 0;
}

void empty_vaunit_struc (Vaunit_struc *pointer)
{
        pointer->length = 0;
        pointer->type   = 0;
        pointer->flags = 0;
        pointer->svcd_offset = 0;
        pointer->pict_hdr_offset = 0;
        pointer->first_frame_offset = 0;
        empty_timecode_struc (&pointer->DTS);
        empty_timecode_struc (&pointer->PTS);
}

void empty_aaunit_struc (
        Aaunit_struc *pointer)
{
        pointer->length = 0;
        empty_timecode_struc (&pointer->PTS);
}

void empty_sector_struc (
        Sector_struc *pointer)
{
        pointer->length_of_sector  = 0;
        pointer->length_of_packet_data  = 0;
        empty_timecode_struc (&pointer->TS);
}


void init_buffer_struc (
        Buffer_struc *pointer,
        unsigned int size)
{
        pointer->max_size = size;
        pointer->first = NULL;
}