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Extend paranoia program to write a file with a WAV header

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rocky
2009-04-19 04:40:12 -04:00
parent cbb5fc643b
commit f756fe368c
3 changed files with 59 additions and 3 deletions
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4
doc/libcdio.texi
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@@ -1703,6 +1703,10 @@ main(int argc, const char *argv[])
@node Example 7
@section Example 7: Using the CD Paranoia library for CD-DA reading
The below program reads CD-DA data. For a more complete program to add
a WAV header so that the CD can be played from a copy on a hard disk,
see the corresponding distribution program.
@smallexample
#ifdef HAVE_CONFIG_H
# include "config.h"

4
example/README
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@@ -57,7 +57,9 @@ mmc2a.c: Show MODE_SENSE page 2A paramaters:
paranoia: A program to show using CD-DA paranoia (a library for jitter
detection and audio-read error correction). This program uses
an interface compatible (mostly) with cdparanoia.
an interface compatible (mostly) with cdparanoia. It looks for
a CD-ROM with an audio CD in it and rips the first 300 sectors
of track 1 to file track-01.wav.
paranoia2: Another program to show using CD-DA paranoia using a more
libcdio-oriented initialization. Probably more suited to

54
example/paranoia.c
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@@ -1,7 +1,7 @@
/*
$Id: paranoia.c,v 1.9 2008/03/24 15:30:56 karl Exp $
Copyright (C) 2005, 2006, 2008 Rocky Bernstein <rocky@gnu.org>
Copyright (C) 2005, 2006, 2008, 2009 Rocky Bernstein <rocky@gnu.org>
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
@@ -32,6 +32,53 @@
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#include <fcntl.h>
static void
put_num(long int num, int f, int bytes)
{
unsigned int i;
unsigned char c;
for (i=0; bytes--; i++) {
c = (num >> (i<<3)) & 0xff;
if (write(f, &c, 1)==-1) {
perror("Could not write to output.");
exit(1);
}
}
}
/* Write a the header for a WAV file. */
static void
write_WAV_header(int fd, long int i_bytecount){
/* quick and dirty */
write(fd, "RIFF", 4); /* 0-3 */
put_num(i_bytecount+44-8, fd, 4); /* 4-7 */
write(fd, "WAVEfmt ", 8); /* 8-15 */
put_num(16, fd, 4); /* 16-19 */
put_num(1, fd, 2); /* 20-21 */
put_num(2, fd, 2); /* 22-23 */
put_num(44100, fd, 4); /* 24-27 */
put_num(44100*2*2, fd, 4); /* 28-31 */
put_num(4, fd, 2); /* 32-33 */
put_num(16, fd, 2); /* 34-35 */
write(fd, "data", 4); /* 36-39 */
put_num(i_bytecount, fd, 4); /* 40-43 */
}
int
main(int argc, const char *argv[])
{
@@ -78,6 +125,7 @@ main(int argc, const char *argv[])
lsn_t i_cursor;
track_t i_track = cdda_sector_gettrack(d, i_first_lsn);
lsn_t i_last_lsn = cdda_track_lastsector(d, i_track);
int fd = creat("track-01.wav", 0644);
/* For demo purposes we'll read only 300 frames (about 4
seconds). We don't want this to take too long. On the other
@@ -90,8 +138,8 @@ main(int argc, const char *argv[])
/* Set reading mode for full paranoia, but allow skipping sectors. */
paranoia_modeset(p, PARANOIA_MODE_FULL^PARANOIA_MODE_NEVERSKIP);
paranoia_seek(p, i_first_lsn, SEEK_SET);
write_WAV_header(fd, (i_last_lsn-i_first_lsn+1) * CDIO_CD_FRAMESIZE_RAW);
for ( i_cursor = i_first_lsn; i_cursor <= i_last_lsn; i_cursor ++) {
/* read a sector */
@@ -108,7 +156,9 @@ main(int argc, const char *argv[])
printf("paranoia read error. Stopping.\n");
break;
}
write(fd, p_readbuf, CDIO_CD_FRAMESIZE_RAW);
}
close(fd);
}
paranoia_free(p);
}