Implemented a first attempt of a .wav decapitator (ticket 38)

trunk@386
Thomas Schmitt 16 years ago
parent 9d3f1292d6
commit e423bda96f
  1. 138
      test/dewav.c

@ -0,0 +1,138 @@
/* dewav
Demo of libburn extension libdax_audioxtr
Audio track data extraction facility of libdax and libburn.
Copyright (C) 2006 Thomas Schmitt <scdbackup@gmx.net>, provided under GPL
*/
#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
/* The API of libburn */
#include "../libburn/libburn.h"
/* The API extension for .wav extraction */
#include "../libburn/libdax_audioxtr.h"
int main(int argc, char **argv)
{
/* This program acts as filter from in_path to out_path */
char *in_path= "", *out_path= "-";
/* The read-and-extract object for use with in_path */
struct libdax_audioxtr *xtr= NULL;
/* Default output is stdout */
int out_fd= 1;
/* Inquired source parameters */
char *fmt, *fmt_info;
int num_channels, sample_rate, bits_per_sample;
/* Auxiliary variables */
int ret, i, be_strict= 1, buf_count;
char buf[2048];
if(argc < 2)
goto help;
for(i= 1; i<argc; i++) {
if(strcmp(argv[i],"-o")==0) {
if(i>=argc-1) {
fprintf(stderr,"%s: option -o needs a file address as argument.\n",
argv[0]);
exit(1);
}
i++;
out_path= argv[i];
} else if(strcmp(argv[i],"--lax")==0) {
be_strict= 0;
} else if(strcmp(argv[i],"--strict")==0) {
be_strict= 1;
} else if(strcmp(argv[i],"--help")==0) {
help:;
printf(
"usage: %s [-o output_path|\"-\"] [--lax|--strict] [source_path|\"-\"]\n",
argv[0]);
exit(0);
} else {
if(in_path[0]!=0) {
fprintf(stderr,"%s: only one input file is allowed.\n", argv[0]);
exit(2);
}
in_path= argv[i];
}
}
if(in_path[0] == 0)
in_path= "-";
/* Initialize libburn and set up messaging system */
if(burn_initialize() == 0) {
fprintf(stderr,"Failed to initialize libburn.\n");
exit(3);
}
/* Print messages of severity NOTE or more directly to stderr */
burn_msgs_set_severities("NEVER", "NOTE", "");
/* Open audio source and create extractor object */
ret= libdax_audioxtr_new(&xtr, in_path, 0);
if(ret<=0)
exit(4);
if(strcmp(out_path,"-")!=0) {
out_fd= open(out_path, O_WRONLY|O_CREAT|O_TRUNC);
if(out_fd == -1) {
fprintf(stderr, "Cannot open file: %s\n", out_path);
fprintf(stderr, "Error reported: '%s' (%d)\n",strerror(errno), errno);
exit(5);
}
}
/* Obtain and print parameters of audio source */
libdax_audioxtr_get_id(xtr, &fmt, &fmt_info,
&num_channels, &sample_rate, &bits_per_sample, 0);
fprintf(stderr, "Detected format: %s\n", fmt_info);
if((num_channels!=2 && num_channels!=4) ||
sample_rate!=44100 || bits_per_sample!=16) {
fprintf(stderr,
"%sAudio source parameters do not comply to cdrskin/README specs\n",
(be_strict ? "" : "WARNING: "));
if(be_strict)
exit(6);
}
/* Extract and put out raw audio data */;
while(1) {
buf_count= libdax_audioxtr_read(xtr, buf, sizeof(buf), 0);
if(buf_count < 0)
exit(7);
if(buf_count == 0)
break;
ret= write(out_fd, buf, buf_count);
if(ret == -1) {
fprintf(stderr, "Failed to write buffer of %d bytes to: %s\n",
buf_count, out_path);
fprintf(stderr, "Error reported: '%s' (%d)\n", strerror(errno), errno);
exit(5);
}
}
/* Shutdown */
if(out_fd>2)
close(out_fd);
libdax_audioxtr_destroy(&xtr, 0);
burn_finish();
exit(0);
}
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