www.pudn.com > jm50g.zip > filehandle.c

/* 
*********************************************************************** 
* COPYRIGHT AND WARRANTY INFORMATION 
* 
* Copyright 2001, International Telecommunications Union, Geneva 
* 
* DISCLAIMER OF WARRANTY 
* 
* These software programs are available to the user without any 
* license fee or royalty on an "as is" basis. The ITU disclaims 
* any and all warranties, whether express, implied, or 
* statutory, including any implied warranties of merchantability 
* or of fitness for a particular purpose.  In no event shall the 
* contributor or the ITU be liable for any incidental, punitive, or 
* consequential damages of any kind whatsoever arising from the 
* use of these programs. 
* 
* This disclaimer of warranty extends to the user of these programs 
* and user's customers, employees, agents, transferees, successors, 
* and assigns. 
* 
* The ITU does not represent or warrant that the programs furnished 
* hereunder are free of infringement of any third-party patents. 
* Commercial implementations of ITU-T Recommendations, including 
* shareware, may be subject to royalty fees to patent holders. 
* Information regarding the ITU-T patent policy is available from 
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* THIS IS NOT A GRANT OF PATENT RIGHTS - SEE THE ITU-T PATENT POLICY. 
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/*! 
 ************************************************************************************** 
 * \file 
 *    filehandle.c 
 * \brief 
 *    Handles the operations how to write 
 *    the generated symbols on the interim file format or some 
 *    other specified output formats 
 * \author 
 *    Main contributors (see contributors.h for copyright, address and affiliation details) 
 *      - Thomas Stockhammer             
 *      - Detlev Marpe                   
 *************************************************************************************** 
 */ 
 
#include "contributors.h" 
 
#include  
#include  
#include  
#include  
#include  
#include  
 
#include "global.h" 
#if TRACE 
#include     // strncpy 
#endif 
#include "rtp.h" 
#include "decodeiff.h" 
 
 
/*! 
 ************************************************************************ 
 * \brief 
 *    Error handling procedure. Print error message to stderr and exit 
 *    with supplied code. 
 * \param text 
 *    Error message 
 ************************************************************************ 
 */ 
void error(char *text, int code) 
{ 
  fprintf(stderr, "%s\n", text); 
  exit(code); 
} 
 
 
/*! 
 ************************************************************************ 
 *  \brief 
 *     This function generates the appropriate slice 
 *     header 
 ************************************************************************ 
 */ 
void start_slice(struct img_par *img, struct inp_par *inp) 
{ 
  Slice *currSlice = img->currentSlice; 
  int i; 
 
  switch(inp->of_mode) 
  { 
    case PAR_OF_IFF: 
      if (inp->symbol_mode == UVLC) 
      { 
        // Current TML File Format 
        nal_startcode_follows = uvlc_startcode_follows; 
        currSlice->readSlice = readSliceIFF; 
        currSlice->partArr[0].readSyntaxElement = readSyntaxElement_UVLC; 
      } 
      else 
      { 
        // CABAC File Format 
        nal_startcode_follows = cabac_startcode_follows; 
        currSlice->readSlice = readSliceIFF; 
        currSlice->partArr[0].readSyntaxElement = readSyntaxElement_CABAC; 
      } 
      break; 
 
    case PAR_OF_26L: 
 
      currSlice->dp_mode = PAR_DP_1; //other modes not supported 
 
      if (inp->symbol_mode == UVLC) 
      { 
        // Current TML File Format 
        nal_startcode_follows = uvlc_startcode_follows; 
        currSlice->readSlice = readSliceUVLC; 
        currSlice->partArr[0].readSyntaxElement = readSyntaxElement_UVLC; 
      } 
      else 
      { 
        // CABAC File Format 
        nal_startcode_follows = cabac_startcode_follows; 
        currSlice->readSlice = readSliceCABAC; 
        currSlice->partArr[0].readSyntaxElement = readSyntaxElement_CABAC; 
      } 
      break; 
    case PAR_OF_RTP: 
      if (inp->symbol_mode == UVLC) 
      { 
        nal_startcode_follows = RTP_startcode_follows; 
        currSlice->readSlice = readSliceRTP; 
        for (i=0; i<3; i++)       // always up to three partitions in RTP 
        { 
          currSlice->partArr[i].readSyntaxElement = readSyntaxElement_RTP; 
          currSlice->partArr[i].bitstream->ei_flag = 1; 
        } 
      } 
      else 
      { 
        // CABAC File Format 
        nal_startcode_follows = cabac_startcode_follows; 
        currSlice->readSlice = readSliceRTP; 
        for (i=0; imax_part_nr; i++) 
        { 
          currSlice->partArr[i].readSyntaxElement = readSyntaxElement_CABAC; 
          currSlice->partArr[i].bitstream->ei_flag = 1; 
        } 
      } 
      break; 
    default: 
      snprintf(errortext, ET_SIZE, "Input File Mode %d not supported", inp->of_mode); 
      error(errortext,1); 
      break; 
  } 
}