recplay.c

音频压缩解压缩软件

#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <linux/soundcard.h>
#include "recplay.h"
#include "def.h"
#include "WAVfile.h"
#include "DSPfile.h"




/*
 * Play a series of WAV files:
 */
int
wavplay(char **argv) {
	WAVFILE *wfile;				/* Opened wav file */
	DSPFILE *dfile = NULL;			/* Opened /dev/dsp device */
	const char *Pathname;			/* Pathname of the open WAV file */


	if ( (Pathname = *argv) == NULL )
		Pathname = "-";			/* Standard input */
	else	Pathname = *(argv++);		/* Point to first pathname on command line */

	/*
	 * Play each Pathname:
	 */
	do	{
		

		/*
		 * Open the wav file for read, unless its stdin:
		 */
		if ( (wfile = WavOpenForRead(Pathname)) == NULL )
			goto errxit;




			if ( (dfile = OpenDSP(wfile,O_WRONLY)) == NULL )
				goto errxit;

			if ( PlayDSP(dfile,wfile) )
				goto errxit;

			if ( CloseDSP(dfile) ) {	/* Close /dev/dsp */
				dfile = NULL;		/* Mark it as closed */
				goto errxit;
			}
		
		
		dfile = NULL;				/* Mark it as closed */
		if ( WavClose(wfile) )		/* Close the wav file */
			wfile = NULL;			/* Mark the file as closed */
		wfile = NULL;				/* Mark the file as closed */
	} while ( (Pathname = *argv++) != NULL );

	return 0;

	
errxit:					
	if ( wfile != NULL )
		WavClose(wfile);			/* Don't report errors here */
	if ( dfile != NULL )
		CloseDSP(dfile);			/* Don't report errors here */

	return -1;
}

/*
 * Record a WAV file:
 */
int
wavrecd(WavPlayOpts *wavopts,char *Pathname) {
	WAVFILE *wfile;				/* Opened wav file */
	DSPFILE *dfile = NULL;			/* Opened /dev/dsp device */

	UInt32 samples;				/* The number of samples to record */
	
	samples = (UInt32) wavopts->Seconds * (UInt32) wavopts->SamplingRate;

	/*
	 * Open the wav file for read, unless its stdin:
	 */
		if ( (wfile = WavOpenForWrite(Pathname,wavopts->Channels,
			wavopts->SamplingRate,wavopts->DataBits,samples)) == NULL )goto errxit;

	if ( (dfile = OpenDSP(wfile,O_RDONLY)) == NULL )
		goto errxit;

	if ( RecordDSP(dfile,wfile,samples) )
		goto errxit;
	printf(" close record");
	if ( CloseDSP(dfile) ) {		/* Close /dev/dsp */
		dfile = NULL;			/* Mark it as closed */
		goto errxit;
	}
	printf("record over!");
	dfile = NULL;				/* Mark it as closed */

	WavClose(wfile);			/* Close the wav file */
	wfile = NULL;				/* Mark the file as closed */

		/* Indicate no open file now */

	return 0;

	
errxit:	
	if ( wfile != NULL )
		WavClose(wfile);
	if ( dfile != NULL )
		CloseDSP(dfile);
	return -1;
}



/* $Source: /home/cvs/wavplay/recplay.c,v $ */