1708
/* DACONV converts CDDA data to various other formats */


#include <stdio.h>
#include <stdlib.h>
#include <dos.h>
#include <string.h>
#include <alloc.h>


int *buffer,*buf2;
char *buf3;
int mode,us;

FILE* infp;
FILE* outfp;

#define SIGNED 1
#define UNSIGNED 0

main(int argc, char *argv[])
{
	if(argc > 3)
	{
		buffer = malloc(32768);                         /* Holds 25 Raw sectors of 2352 bytes */

		if(! (infp = fopen(argv[1],"rb")) ) {
			printf("Can't find %s!\n",argv[1]);
			exit(1);
		}
		outfp = fopen(argv[2],"wb");

		mode = atoi(argv[3]);

		us = SIGNED;

		if(argc > 4) {
			if (argv[4][0] == '/') {
				if(strupr(argv[4])[1] == 'U')
					us = UNSIGNED;
			} else {
				printf("Unrecognized parameter! Aborting...\n");
				delay(1000);
				exit(1);
			}
		}

		switch (mode) {
			case 1 : us16_44k_st();break;
			case 2 : us16_44k_mo();break;
			case 3 : us8_22k_st();break;
			case 4 : us8_44k_mo();break;
			case 5 : us8_22k_mo();break;
			case 6 : us8_11k_mo();break;
		}

		fclose(infp);
		fclose(outfp);
		free(buffer);
		free(buf2);
		free(buf3);
	}
	else {
		printf("DACONV converts Signed 16 bit 44 KHz CDDA audio data\n");
		printf("Usage: daconv <infile> <outfile> <mode> [/u]\n\n");
		printf("If /u is given, the data is also made unsigned\n\n");
		printf("modes: 1 = 16 bit 44 KHz stereo\n");
		printf("       2 = 16 bit 44 KHz mono\n");
		printf("       3 =  8 bit 22 KHz stereo\n");
		printf("       4 =  8 bit 44 KHz mono\n");
		printf("       5 =  8 bit 22 KHz mono\n");
		printf("       6 =  8 bit 11 KHz mono\n");
	}
}


us16_44k_st()
{
unsigned int numread,i;

	if(us == SIGNED)
		printf("No conversion made (the data is already signed 16 bit 44 Khz).\n");
	else
	{
		do{
			numread = fread(buffer,1,32768,infp);

			for(i=0;i < (numread/2);i++)
				buffer[i] ^= 0x8000;

			fwrite(buffer,2,numread/2,outfp);
		} while(numread == 32768);
	}
}

us16_44k_mo()
{
unsigned int numread,i,j;

	buf2 = malloc(16384);

	if(us == SIGNED)
	{
		do{
			numread = fread(buffer,1,32768,infp);

			j = 0;

			for(i=0;i < (numread/2);i+=2) {
				buffer[i] /= 2;
				buffer[i+1] /= 2;
				buffer[i] += buffer[i+1];
				buf2[j++] = buffer[i];
			}
			fwrite(buf2,2,numread/4,outfp);
		} while(numread == 32768);
	}
	else
	{
		do{
			numread = fread(buffer,1,32768,infp);

			j = 0;

			for(i=0;i < (numread/2);i+=2) {
				buffer[i] /= 2;
				buffer[i+1] /= 2;
				buffer[i] += buffer[i+1];
				buffer[i] ^=  0x8000;
				buf2[j++] = buffer[i];
			}
			fwrite(buf2,2,numread/4,outfp);
		} while(numread == 32768);
	}
}


us8_22k_st()
{
unsigned int numread,i,j;

	buf3 =malloc(8192);

	if(us == SIGNED)
	{
		do{
			numread = fread(buffer,1,32768,infp);

			j = 0;

			for(i=0;i < (numread/2);i+=4) {
				buffer[i] >>= 8;               /* 16 bit -> 8 bit */
				buffer[i+1] >>= 8;
				buf3[j++] = (unsigned char)buffer[i];
				buf3[j++] = (unsigned char)buffer[i+1];
			}
			fwrite(buf3,1,numread/4,outfp);
		} while(numread == 32768);
  }
  else
  {
		do{
			numread = fread(buffer,1,32768,infp);

			j = 0;

			for(i=0;i < (numread/2);i+=4) {
				buffer[i] ^= 0x8000;           /* Signed -> unsigned */
				buffer[i+1] ^= 0x8000;
				buffer[i] >>= 8;               /* 16 bit -> 8 bit */
				buffer[i+1] >>= 8;
				buf3[j++] = (unsigned char)buffer[i];
				buf3[j++] = (unsigned char)buffer[i+1];
			}
			fwrite(buf3,1,numread/4,outfp);
		} while(numread == 32768);
	}
}

us8_44k_mo()
{
unsigned int numread,i,j;

	buf3 = malloc(8192);

	if(us == SIGNED)
	{
		do{
			numread = fread(buffer,1,32768,infp);

			j = 0;

			for(i=0;i < (numread/2);i+=2) {
				buffer[i] /= 2;
				buffer[i+1] /= 2;
				buffer[i] += buffer[i+1];
				buffer[i] >>= 8;
				buf3[j++] = (unsigned char)buffer[i];
			}
			fwrite(buf3,1,numread/4,outfp);
		} while(numread == 32768);
	}
	else
	{
		do{
			numread = fread(buffer,1,32768,infp);

			j = 0;

			for(i=0;i < (numread/2);i+=2) {
				buffer[i] /= 2;
				buffer[i+1] /= 2;
				buffer[i] += buffer[i+1];
				buffer[i] ^= 0x8000;
				buffer[i] >>= 8;
				buf3[j++] = (unsigned char)buffer[i];
			}
			fwrite(buf3,1,numread/4,outfp);
		} while(numread == 32768);
	}
}


us8_22k_mo(int mode)
{
unsigned int numread,i,j;

	buf3 = malloc(4096);

	if(us == SIGNED)
	{
		do{
			numread = fread(buffer,1,32768,infp);

			j = 0;

			for(i=0;i < (numread/2);i+=4) {
				buffer[i] /= 2;
				buffer[i+1] /= 2;
				buffer[i] += buffer[i+1];
				buffer[i] >>= 8;
				buf3[j++] = (unsigned char)buffer[i];
			}
			fwrite(buf3,1,numread/8,outfp);
		} while(numread == 32768);
	}
	else
	{
		do{
			numread = fread(buffer,1,32768,infp);

			j = 0;

			for(i=0;i < (numread/2);i+=4) {
				buffer[i] /= 2;
				buffer[i+1] /= 2;
				buffer[i] += buffer[i+1];
				buffer[i] ^= 0x8000;
				buffer[i] >>= 8;
				buf3[j++] = (unsigned char)buffer[i];
			}
			fwrite(buf3,1,numread/8,outfp);
		} while(numread == 32768);
	}
}


us8_11k_mo(int mode)
{
unsigned int numread,i,j;

	buf3 = malloc(4096);

	if(us == SIGNED)
	{
		do{
			numread = fread(buffer,1,32768,infp);

			j = 0;

			for(i=0;i < (numread/2);i+=8) {
				buffer[i] /= 2;
				buffer[i+1] /= 2;
				buffer[i] += buffer[i+1];
				buffer[i] >>= 8;
				buf3[j++] = (unsigned char)buffer[i];
			}
			fwrite(buf3,1,numread/16,outfp);
		} while(numread == 32768);
	}
	else
	{
		do{
			numread = fread(buffer,1,32768,infp);

			j = 0;

			for(i=0;i < (numread/2);i+=8) {
				buffer[i] /= 2;
				buffer[i+1] /= 2;
				buffer[i] += buffer[i+1];
				buffer[i] ^= 0x8000;
				buffer[i] >>= 8;
				buf3[j++] = (unsigned char)buffer[i];
			}
			fwrite(buf3,1,numread/16,outfp);
		} while(numread == 32768);
	}
}

.

0