diff --git a/doc/libcdio.texi b/doc/libcdio.texi index 97544b06..b63ce82c 100644 --- a/doc/libcdio.texi +++ b/doc/libcdio.texi @@ -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" diff --git a/example/README b/example/README index 1db482bd..16a5256b 100644 --- a/example/README +++ b/example/README @@ -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 diff --git a/example/paranoia.c b/example/paranoia.c index fa8eef1a..045d1b70 100644 --- a/example/paranoia.c +++ b/example/paranoia.c @@ -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 + Copyright (C) 2005, 2006, 2008, 2009 Rocky Bernstein 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 #endif +#ifdef HAVE_UNISTD_H +#include +#endif + +#ifdef HAVE_SYS_TYPES_H +#include +#endif + +#ifdef HAVE_SYS_STAT_H +#include +#endif + +#include + +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); }