raw2sco.c

blue-usu: (Search, Connect, Playback, Record) with bluetooth devices like headset. Rely on usu dr

/*
 * raw2sco.c
 *
 * Author : Lionetti Salvatore <[e-mail]>
 * License: GPL
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#include<fcntl.h>  /* open().*/
#include<unistd.h> /* read()/close().*/
#include<stdio.h>
#include<string.h> /* To have memcpy().*/
int main(int argc, char* argv[]) {
	int ritorno;
	char scoHandle[2];
	int fd;
	
	/* Get sco handle.*/
	{
		ritorno = 1;
		int fd=open("data.txt",O_RDONLY,0666);
		if (fd>0) {
			char handles[8];
			if (read(fd,handles,8)==8) {
				scoHandle[0]=handles[6];
				scoHandle[1]=handles[7];
				ritorno = 0;
			}
			close(fd);
		}
	}

	fd=0;
	if (argc>1) {
		fd=open(argv[1],O_RDONLY,0666);
		ritorno=(fd<=0);
	}

	/* Read from sco file.*/
	if (ritorno == 0) {
		/* 
		 * Tipical frame:
		 *  handle len
		 *  2b  00  30 ... (48 bytes)
		 */

		ritorno = 1;
		
		/* on 0 return, driver is ok.*/
		while (ritorno>0) {
			char data[48];
			unsigned char len=48;
			unsigned char l;
			int nTenta=100;
			int headWr=0;
			l=0;
			
			while (ritorno>=0 && l<len && nTenta) {
				ritorno=read(fd,data+l,len-l);
				if (ritorno>0) {
					if (!headWr) {
						headWr=1;
						write(1,scoHandle,2);
						write(1,&len,1);
					}
					write(1,data+l,ritorno);
					nTenta=100;
				} else
					nTenta--;
				l+=ritorno;
			}
			if (ritorno>=0 && headWr) {
				memset(data+l,0,len-l);
				write(1,data+l,len-l);
			}
		}
	}
	fprintf(stderr,"ritorno(%d)",ritorno);
	return ritorno;
}