www.pudn.com > XvidQP.rar > cep_obuffer.cpp

/*  @(#) cep_obuffer.cpp, last edit: 4/9/1998 
 *  @(#) Copyright (C) 1998 Syntrillium Software (www.syntrillium.com) 
 * 
 *  This program is free software; you can redistribute it and/or modify 
 *  it under the terms of the GNU General Public License as published by 
 *  the Free Software Foundation; either version 2 of the License, or 
 *  (at your option) any later version. 
 * 
 *  This program is distributed in the hope that it will be useful, 
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of 
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 *  GNU General Public License for more details. 
 * 
 *  You should have received a copy of the GNU General Public License 
 *  along with this program; if not, write to the Free Software 
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
 * 
 
	 
	The only output buffer thing we need for Cool Edit integeration 
 
 
*/ 
 
#ifdef  __WIN32__ 
#include  
 
#ifndef WIN32GUI 
#include  
#endif 
 
#include "header.h" 
#include "args.h" 
#include "obuffer.h" 
#include "CEP_Obuffer.h" 
 
 
#define MAXFRAMESFORWRITE 12 
 
CEP_Obuffer::CEP_Obuffer(uint32 number_of_channels, 
										     MPEG_Args *maplay_args) 
{ 
  channels  = number_of_channels; 
  data_size = channels * OBUFFERSIZE * 2; // double to make for floats 
 
  if (maplay_args->MPEGheader->version() == MPEG2_LSF) 
     data_size >>= 1; 
 
  if (maplay_args->MPEGheader->layer() == 1) 
  	  data_size /= 3; 
 
  temp = new BYTE[data_size*MAXFRAMESFORWRITE]; 
 
  uint32 i; 
  for(i=0; i> 8); 
 
  bufferp[channel] += channels << 2;	// byte advancing 
 
  return; 
} 
 
void CEP_Obuffer::appendblock (uint32 channel, real * pvalues, int iCount) 
{ 
  // Need to break up the 32-bit integer into 2 8-bit bytes. 
  // (ignore the first two bytes - either 0x0000 or 0xffff) 
  // Note that Intel byte order is backwards!!! 
	float * pTemp=(float *)(temp+bufferp[channel]); 
	int iIncrement=(channels<<2)/4; 
	 
	bufferp[channel]+=(channels<<2)*iCount; 
 
	while (iCount--) 
	{	*pTemp=*pvalues++; 
		pTemp+=iIncrement; 
	} 
	 
	return; 
} 
 
void CEP_Obuffer::write_buffer(int32 fd) 
{  
	// we really don't need to do anything but reset here 
  // Reset buffer pointers 
  //uint32 i; 
  //for(i=0; iMPEGheader->mode(); 
	enum e_channels which_channels = maplay_args->which_c; 
 
	if ((mode == single_channel) || (which_channels != both)) 
		buffer = new CEP_Obuffer(1, maplay_args);	// mono 
	else 
		buffer = new CEP_Obuffer(2, maplay_args);	// stereo 
 
	return(buffer); 
} 
 
#endif // __WIN32__