output.c

AVS视频编解码器 能实现视频图像的高效率压缩 能在ＶＣ上高速运行

/*
***********************************************************************
* COPYRIGHT AND WARRANTY INFORMATION
*
* Copyright 2003, Advanced Audio Video Coding Standard, Part II
*
* DISCLAIMER OF WARRANTY
*
* These software programs are available to the users without any
* license fee or royalty on an "as is" basis. The AVS 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 contributors or 
* the AVS be liable for any incidental, punitive, or consequential
* damages of any kind whatsoever arising from the use of this program.
*
* This disclaimer of warranty extends to the user of this program
* and user's customers, employees, agents, transferees, successors,
* and assigns.
*
* The AVS does not represent or warrant that the program furnished
* hereunder are free of infringement of any third-party patents.
* Commercial implementations of AVS, including shareware, may be
* subject to royalty fees to patent holders. Information regarding
* the AVS patent policy is available from the AVS Web site at
* http://www.avs.org.cn
*
* THIS IS NOT A GRANT OF PATENT RIGHTS - SEE THE AVS PATENT POLICY.
************************************************************************
*/

/*
*************************************************************************************
* File name:  output.c
* Function: Output an image and Trance support
*
*************************************************************************************
*/


#include "contributors.h"

#include "global.h"

#include <stdlib.h>

/*
*************************************************************************
* Function:Write decoded frame to output file
* Input:
* Output:
* Return: 
* Attention:
*************************************************************************
*/

void write_frame(
  struct img_par *img,  //!< image parameter
  FILE *p_out)          //!< filestream to output file
{
  int i,j;

  for(i=0;i<img->height;i++)
    for(j=0;j<img->width;j++)
    {
      fputc(imgY[i][j],p_out);
    }

  for(i=0;i<img->height_cr;i++)
    for(j=0;j<img->width_cr;j++)
    {
      fputc(imgUV[0][i][j],p_out);
    }

  for(i=0;i<img->height_cr;i++)
    for(j=0;j<img->width_cr;j++)
    {
      fputc(imgUV[1][i][j],p_out);
    }

  fflush(p_out);

}

/*
*************************************************************************
* Function:Write previous decoded P frame to output file
* Input:
* Output:
* Return: 
* Attention:
*************************************************************************
*/

void write_prev_Pframe(struct img_par *img, FILE *p_out)
{
  int i,j;
 
  for(i=0;i<img->height;i++)
    for(j=0;j<img->width;j++)
      fputc(imgY_prev[i][j],p_out);

  for(i=0;i<img->height_cr;i++)
    for(j=0;j<img->width_cr;j++)
      fputc(imgUV_prev[0][i][j],p_out);

  for(i=0;i<img->height_cr;i++)
    for(j=0;j<img->width_cr;j++)
      fputc(imgUV_prev[1][i][j],p_out);

  fflush( p_out  );

}

#if TRACE
static int bitcounter = 0;

/*
*************************************************************************
* Function:Tracing bitpatterns for symbols
      A code word has the following format: 0 Xn...0 X2 0 X1 0 X0 1
* Input:
* Output:
* Return: 
* Attention:
*************************************************************************
*/

void tracebits(
    const char *trace_str,  //!< tracing information, char array describing the symbol
    int len,                //!< length of syntax element in bits
    int info,               //!< infoword of syntax element
    int value1)
{

  int i, chars;

  if(len>=34)
  {
    snprintf(errortext, ET_SIZE, "Length argument to put too long for trace to work");
    error (errortext, 600);
  }

  putc('@', p_trace);
  chars = fprintf(p_trace, "%i", bitcounter);
  while(chars++ < 6)
    putc(' ',p_trace);

  chars += fprintf(p_trace, "%s", trace_str);
  while(chars++ < 55)
    putc(' ',p_trace);

  // Align bitpattern
  if(len<15)
  {
    for(i=0 ; i<15-len ; i++)
      fputc(' ', p_trace);
  }

  // Print bitpattern
  for(i=0 ; i<len/2 ; i++)
  {
    fputc('0', p_trace);
  }
  // put 1
  fprintf(p_trace, "1");

  // Print bitpattern
  for(i=0 ; i<len/2 ; i++)
  {
      if (0x01 & ( info >> ((len/2-i)-1)))
        fputc('1', p_trace);
      else
        fputc('0', p_trace);
  }

  fprintf(p_trace, "  (%3d)\n", value1);
  bitcounter += len;

  fflush (p_trace);

}

/*
*************************************************************************
* Function:Tracing bitpatterns 
* Input:
* Output:
* Return: 
* Attention:
*************************************************************************
*/


void tracebits2(
    const char *trace_str,  //!< tracing information, char array describing the symbol
    int len,                //!< length of syntax element in bits
    int info)
{

  int i, chars;

  if(len>=45)
  {
    snprintf(errortext, ET_SIZE, "Length argument to put too long for trace to work");
    error (errortext, 600);
  }

  putc('@', p_trace);
  chars = fprintf(p_trace, "%i", bitcounter);
  while(chars++ < 6)
    putc(' ',p_trace);
  chars += fprintf(p_trace, "%s", trace_str);
  while(chars++ < 55)
    putc(' ',p_trace);

  // Align bitpattern
  if(len<15)
    for(i=0 ; i<15-len ; i++)
      fputc(' ', p_trace);

  bitcounter += len;
  while (len >= 32)
  {
    for(i=0 ; i<8 ; i++)
    {
      fputc('0', p_trace);
    }
    len -= 8;

  }
  // Print bitpattern
  for(i=0 ; i<len ; i++)
  {
    if (0x01 & ( info >> (len-i-1)))
      fputc('1', p_trace);
    else
      fputc('0', p_trace);
  }

  fprintf(p_trace, "  (%3d)\n", info);

  fflush (p_trace);

}

/*
*************************************************************************
* Function:Tracing bitpatterns for symbols
* Input:
* Output:
* Return: 
* Attention:
*************************************************************************
*/


void tracebits3(
    const char *trace_str,  //!< tracing information, char array describing the symbol
    int len,                //!< length of syntax element in bits
    int info,               //!< infoword of syntax element
    int value1)
{
  int i, chars;

  if(len>=34)
  {
    snprintf(errortext, ET_SIZE, "Length argument to put too long for trace to work");
    error (errortext, 600);
  }

  putc('@', p_trace);
  chars = fprintf(p_trace, "%i", bitcounter);
  while(chars++ < 6)
    putc(' ',p_trace);

  chars += fprintf(p_trace, "%s", trace_str);
  while(chars++ < 55)
    putc(' ',p_trace);

  // Align bitpattern
  if(len<15)
  {
    for(i=0 ; i<15-len ; i++)
      fputc(' ', p_trace);
  }

  // Print bitpattern
  for(i=0 ; i<len ; i++)
  {
    if (0x01 & ( info >> (len-i-1)))
      fputc('1', p_trace);
    else
      fputc('0', p_trace);
  }
  
  fprintf(p_trace, "  (%3d)\n", value1);
  bitcounter += len;

  fflush (p_trace);

}
#endif