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Roughly implemented automatic .wav extraction in cdrskin

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This commit is contained in:
Thomas Schmitt
2006-10-17 14:13:30 +00:00
parent f8fd6a21f4
commit 1e80ad2187
6 changed files with 253 additions and 43 deletions
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46
test/dewav.c
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@ -15,20 +15,26 @@
#include <stdlib.h>
#include <errno.h>
/* libdax_audioxtr is quite independent of libburn. It only needs
the messaging facility libdax_msgs. So we got two build variations:
*/
#ifdef Dewav_without_libburN
/* This build environment is standalone relying only on libdax components */
#include "../libburn/libdax_msgs.h"
struct libdax_msgs *libdax_messenger= NULL;
#else /* Dewav_without_libburN */
/* The API of libburn */
/* This build environment uses libdax_msgs via libburn */
/* Thus the API header of libburn */
#include "../libburn/libburn.h"
#endif /* ! Dewav_without_libburN */
/* The API extension for .wav extraction */
/* The API for .wav extraction */
#include "../libburn/libdax_audioxtr.h"
@ -39,6 +45,8 @@ int main(int argc, char **argv)
/* The read-and-extract object for use with in_path */
struct libdax_audioxtr *xtr= NULL;
/* The file descriptor eventually detached from xtr */
int xtr_fd= -2;
/* Default output is stdout */
int out_fd= 1;
@ -48,7 +56,7 @@ int main(int argc, char **argv)
int num_channels, sample_rate, bits_per_sample;
/* Auxiliary variables */
int ret, i, be_strict= 1, buf_count;
int ret, i, be_strict= 1, buf_count, detach_fd= 0;
char buf[2048];
if(argc < 2)
@ -66,6 +74,9 @@ int main(int argc, char **argv)
be_strict= 0;
} else if(strcmp(argv[i],"--strict")==0) {
be_strict= 1;
} else if(strcmp(argv[i],"--detach_fd")==0) {
/* Test the dirty detach method */
detach_fd= 1;
} else if(strcmp(argv[i],"--help")==0) {
help:;
fprintf(stderr,
@ -84,8 +95,11 @@ help:;
in_path= "-";
/* Depending on wether this was built standalone or with full libburn :
*/
#ifdef Dewav_without_libburN
/* Initialize and set up libdax messaging system */
ret= libdax_msgs_new(&libdax_messenger,0);
if(ret<=0) {
fprintf(stderr,"Failed to create libdax_messenger object.\n");
@ -97,7 +111,7 @@ help:;
#else /* Dewav_without_libburN */
/* Initialize libburn and set up messaging system */
/* Initialize libburn and set up its messaging system */
if(burn_initialize() == 0) {
fprintf(stderr,"Failed to initialize libburn.\n");
exit(3);
@ -126,8 +140,7 @@ help:;
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) {
if(num_channels!=2 || sample_rate!=44100 || bits_per_sample!=16) {
fprintf(stderr,
"%sAudio source parameters do not comply to cdrskin/README specs\n",
(be_strict ? "" : "WARNING: "));
@ -135,11 +148,29 @@ help:;
exit(6);
}
if(detach_fd) {
/* Take over fd from xtr */;
ret= libdax_audioxtr_detach_fd(xtr, &xtr_fd, 0);
if(ret<=0) {
fprintf(stderr, "Cannot detach file descriptor from extractor\n");
exit(8);
}
/* not needed any more */
libdax_audioxtr_destroy(&xtr, 0);
fprintf(stderr, "Note: detached fd and freed extractor object.\n");
}
/* Extract and put out raw audio data */;
while(1) {
buf_count= libdax_audioxtr_read(xtr, buf, sizeof(buf), 0);
if(detach_fd) {
buf_count= read(xtr_fd, buf, sizeof(buf));
if(buf_count==-1)
fprintf(stderr,"Error while reading from detached fd\n(%d) '%s'\n",
errno, strerror(errno));
} else {
buf_count= libdax_audioxtr_read(xtr, buf, sizeof(buf), 0);
}
if(buf_count < 0)
exit(7);
if(buf_count == 0)
@ -158,6 +189,7 @@ help:;
/* Shutdown */
if(out_fd>2)
close(out_fd);
/* ( It is permissible to do this with xtr==NULL ) */
libdax_audioxtr_destroy(&xtr, 0);
#ifdef Dewav_without_libburN