memalloc.c

G729、h263、h264、MPEG4四种最流行的音频和视频标准的压缩和解压算法的源代码.rar

/*!
 ************************************************************************
 * \file  memalloc.c
 *
 * \brief
 *    Memory allocation and free helper functions
 *
 * \author
 *    Main contributors (see contributors.h for copyright, address and affiliation details)
 ************************************************************************
 */

#include <stdlib.h>

#include "global.h"


 /*!
 ************************************************************************
 * \brief
 *    Initialize 2-dimensional top and bottom field to point to the proper
 *    lines in frame
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************/
int init_top_bot_planes(imgpel **imgFrame, int rows, int columns, imgpel ***imgTopField, imgpel ***imgBotField)
{
  int i;
      
  if((*imgTopField   = (imgpel**)calloc(rows/2,        sizeof(imgpel*))) == NULL)
    no_mem_exit("init_top_bot_planes: imgTopField");

  if((*imgBotField   = (imgpel**)calloc(rows/2,        sizeof(imgpel*))) == NULL)
    no_mem_exit("init_top_bot_planes: imgBotField");

  for(i=0 ; i<rows/2 ; i++)
  {
    (*imgTopField)[i] =  imgFrame[2*i  ];
    (*imgBotField)[i] =  imgFrame[2*i+1];
  }

  return rows*sizeof(imgpel*);
}

 /*!
 ************************************************************************
 * \brief
 *    free 2-dimensional top and bottom fields without freeing target memory
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************/
void free_top_bot_planes(imgpel **imgTopField, imgpel **imgBotField)
{
  free (imgTopField);
  free (imgBotField);
}


/*!
 ************************************************************************
 * \brief
 *    Allocate 2D memory array -> imgpel array2D[rows][columns]
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************/
int get_mem2Dpel(imgpel ***array2D, int rows, int columns)
{
  int i;
      
  if((*array2D      = (imgpel**)calloc(rows,        sizeof(imgpel*))) == NULL)
    no_mem_exit("get_mem2Dpel: array2D");
  if(((*array2D)[0] = (imgpel* )calloc(rows*columns,sizeof(imgpel ))) == NULL)
    no_mem_exit("get_mem2Dpel: array2D");

  for(i=1 ; i<rows ; i++)
    (*array2D)[i] =  (*array2D)[i-1] + columns  ;

  return rows*columns*sizeof(imgpel);
}


/*!
 ************************************************************************
 * \brief
 *    Allocate 3D memory array -> imgpel array3D[frames][rows][columns]
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************
 */
int get_mem3Dpel(imgpel ****array3D, int frames, int rows, int columns)
{
  int  j;
      
  if(((*array3D) = (imgpel***)calloc(frames,sizeof(imgpel**))) == NULL)
    no_mem_exit("get_mem3Dpel: array3D");

  for(j=0;j<frames;j++)
    get_mem2Dpel( (*array3D)+j, rows, columns ) ;

  return frames*rows*columns*sizeof(imgpel);
}

/*!
 ************************************************************************
 * \brief
 *    free 2D memory array
 *    which was allocated with get_mem2Dpel()
 ************************************************************************
 */
void free_mem2Dpel(imgpel **array2D)
{
  if (array2D)
  {
    if (array2D[0])
      free (array2D[0]);
    else error ("free_mem2Dpel: trying to free unused memory",100);
      
    free (array2D);
  } else
  {
    error ("free_mem2Dpel: trying to free unused memory",100);
  }
}

/*!
 ************************************************************************
 * \brief
 *    free 3D memory array
 *    which was allocated with get_mem3Dpel()
 ************************************************************************
 */
void free_mem3Dpel(imgpel ***array3D, int frames)
{
  int i;
      
  if (array3D)
  {
    for (i=0;i<frames;i++)
    { 
      free_mem2Dpel(array3D[i]);
    }
   free (array3D);
  } else
  {
    error ("free_mem3Dpel: trying to free unused memory",100);
  }
}

/*!
 ************************************************************************
 * \brief
 *    Allocate 2D memory array -> unsigned char array2D[rows][columns]
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************/
int get_mem2D(byte ***array2D, int rows, int columns)
{
  int i;

  if((*array2D      = (byte**)calloc(rows,        sizeof(byte*))) == NULL)
    no_mem_exit("get_mem2D: array2D");
  if(((*array2D)[0] = (byte* )calloc(columns*rows,sizeof(byte ))) == NULL)
    no_mem_exit("get_mem2D: array2D");

  for(i=1;i<rows;i++)
    (*array2D)[i] = (*array2D)[i-1] + columns ;

  return rows*columns;
}

/*!
 ************************************************************************
 * \brief
 *    Allocate 2D memory array -> int array2D[rows][columns]
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************
 */
int get_mem2Dint(int ***array2D, int rows, int columns)
{
  int i;
  
  if((*array2D      = (int**)calloc(rows,        sizeof(int*))) == NULL)
    no_mem_exit("get_mem2Dint: array2D");
  if(((*array2D)[0] = (int* )calloc(rows*columns,sizeof(int ))) == NULL)
    no_mem_exit("get_mem2Dint: array2D");
  
  for(i=1 ; i<rows ; i++)
    (*array2D)[i] =  (*array2D)[i-1] + columns  ;
  
  return rows*columns*sizeof(int);
}

/*!
 ************************************************************************
 * \brief
 *    Allocate 2D memory array -> int64 array2D[rows][columns]
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************
 */
int get_mem2Dint64(int64 ***array2D, int rows, int columns)
{
  int i;

  if((*array2D      = (int64**)calloc(rows,        sizeof(int64*))) == NULL)
    no_mem_exit("get_mem2Dint64: array2D");
  if(((*array2D)[0] = (int64* )calloc(rows*columns,sizeof(int64 ))) == NULL)
    no_mem_exit("get_mem2Dint64: array2D");

  for(i=1 ; i<rows ; i++)
    (*array2D)[i] =  (*array2D)[i-1] + columns  ;

  return rows*columns*sizeof(int64);
}

/*!
 ************************************************************************
 * \brief
 *    Allocate 3D memory array -> unsigned char array3D[frames][rows][columns]
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************
 */
int get_mem3D(byte ****array3D, int frames, int rows, int columns)
{
  int  j;

  if(((*array3D) = (byte***)calloc(frames,sizeof(byte**))) == NULL)
    no_mem_exit("get_mem3D: array3D");

  for(j=0;j<frames;j++)
    get_mem2D( (*array3D)+j, rows, columns ) ;

  return frames*rows*columns;
}

/*!
 ************************************************************************
 * \brief
 *    Allocate 3D memory array -> int array3D[frames][rows][columns]
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************
 */
int get_mem3Dint(int ****array3D, int frames, int rows, int columns)
{
  int  j;

  if(((*array3D) = (int***)calloc(frames,sizeof(int**))) == NULL)
    no_mem_exit("get_mem3Dint: array3D");

  for(j=0;j<frames;j++)
    get_mem2Dint( (*array3D)+j, rows, columns ) ;

  return frames*rows*columns*sizeof(int);
}

/*!
 ************************************************************************
 * \brief
 *    Allocate 3D memory array -> int64 array3D[frames][rows][columns]
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************
 */
int get_mem3Dint64(int64 ****array3D, int frames, int rows, int columns)
{
  int  j;

  if(((*array3D) = (int64***)calloc(frames,sizeof(int64**))) == NULL)
    no_mem_exit("get_mem3Dint64: array3D");

  for(j=0;j<frames;j++)
    get_mem2Dint64( (*array3D)+j, rows, columns ) ;

  return frames*rows*columns*sizeof(int64);
}

/*!
 ************************************************************************
 * \brief
 *    Allocate 4D memory array -> int array3D[frames][rows][columns][component]
 *
 * \par Output:
 *    memory size in bytes
 ************************************************************************
 */
int get_mem4Dint(int *****array4D, int idx, int frames, int rows, int columns )
{
  int  j;

  if(((*array4D) = (int****)calloc(idx,sizeof(int**))) == NULL)
    no_mem_exit("get_mem4Dint: array4D");

  for(j=0;j<idx;j++)
    get_mem3Dint( (*array4D)+j, frames, rows, columns ) ;

  return idx*frames*rows*columns*sizeof(int);
}

/*!
 ************************************************************************
 * \brief