/* Just printing out ID3 tags with plain data from libmpg123 and explicitly called conversion routine. */

#include "compat.h"

#include <mpg123.h>

#include "debug.h"

int test_whence(const char* path, int scan_before)

{

int err = MPG123_OK;

mpg123_handle* mh = NULL;

off_t length, pos;

mh = mpg123_new(NULL, &err );

if(mh == NULL) return -1;

err = mpg123_open(mh, path );

if(err != MPG123_OK) return -1;

if(scan_before) mpg123_scan(mh);

pos = mpg123_seek( mh, 0, SEEK_END);

if(pos < 0){ error1("seek failed: %s", mpg123_strerror(mh)); return -1; }

pos = mpg123_tell(mh);

length = mpg123_length(mh);

/* Later: Read samples and compare different whence values with identical seek positions. */

mpg123_close(mh);

mpg123_delete(mh);

fprintf(stdout, "length %"OFF_P" vs. pos %"OFF_P"\n", length, pos);

return (pos == length) ? 0 : -1;

}

void print_field(const char *name, mpg123_string *sb)

{

const unsigned char *sbp = (unsigned char*)sb->p;

enum mpg123_text_encoding enc;

mpg123_string printer;

mpg123_init_string(&printer);

printf("\n=== %s ===\n", name);

if(sb->fill == 0)

{

printf("Oh, empty. Totally.\n");

return;

}

enc = mpg123_enc_from_id3(sbp[0]);

printf("From encoding: %i (in ID3: %i)\n", enc, (int)sbp[0]) ;

if(mpg123_store_utf8(&printer, enc, sbp+1, sb->fill-1))

{

/* Not caring for multiple strings separated via null bytes here. */

printf("Value: %s\n", printer.p);

}

else error("Conversion failed!");

mpg123_free_string(&printer);

}

int main(int argc, char **argv)

{

int err;

int ret = 0;

mpg123_handle *mh;

mpg123_id3v2 *id3;

if(argc < 2)

{

printf("Gimme a MPEG file name...\n");

return 0;

}

mpg123_init();

mh = mpg123_new(NULL, &err);

if(err != MPG123_OK) goto badend;

mpg123_param(mh, MPG123_ADD_FLAGS, MPG123_PLAIN_ID3TEXT, 0.);

err = mpg123_open(mh, argv[1]);

if(err != MPG123_OK) goto badend;

err = mpg123_scan(mh);

if(err != MPG123_OK) goto badend;

err = mpg123_id3(mh, NULL, &id3);

if(err != MPG123_OK) goto badend;

if(id3 == NULL)

{

error("No ID3 data found.");

goto badend;

}

print_field("artist", id3->artist);

print_field("title", id3->title);

print_field("album", id3->album);

print_field("comment", id3->comment);

goto end;

badend:

ret = -1;

end:

mpg123_delete(mh);

mpg123_exit();

return ret;

}