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/* iffscan - Simple AIFF/RIFF chunk scanner
* Copyright (C) 2007,2008 Josh Coalson
*
* 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 the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined _MSC_VER || defined __MINGW32__
#include <sys/types.h> /* for off_t */
#if _MSC_VER <= 1600 /* @@@ [2G limit] */
#define fseeko fseek
#define ftello ftell
#endif
#endif
#include "foreign_metadata.h"
static FLAC__uint32 unpack32be_(const FLAC__byte *b)
{
return ((FLAC__uint32)b[0]<<24) + ((FLAC__uint32)b[1]<<16) + ((FLAC__uint32)b[2]<<8) + (FLAC__uint32)b[3];
}
static FLAC__uint32 unpack32le_(const FLAC__byte *b)
{
return (FLAC__uint32)b[0] + ((FLAC__uint32)b[1]<<8) + ((FLAC__uint32)b[2]<<16) + ((FLAC__uint32)b[3]<<24);
}
static FLAC__uint32 unpack32_(const FLAC__byte *b, foreign_block_type_t type)
{
if(type == FOREIGN_BLOCK_TYPE__AIFF)
return unpack32be_(b);
else
return unpack32le_(b);
}
int main(int argc, char *argv[])
{
FILE *f;
char buf[12];
foreign_metadata_t *fm;
const char *fn, *error;
size_t i;
FLAC__uint32 size;
if(argc != 2) {
fprintf(stderr, "usage: %s { file.wav | file.aif }\n", argv[0]);
return 1;
}
fn = argv[1];
if(0 == (f = fopen(fn, "rb")) || fread(buf, 1, 4, f) != 4) {
fprintf(stderr, "ERROR opening %s for reading\n", fn);
return 1;
}
fclose(f);
if(0 == (fm = flac__foreign_metadata_new(memcmp(buf, "RIFF", 4)? FOREIGN_BLOCK_TYPE__AIFF : FOREIGN_BLOCK_TYPE__RIFF))) {
fprintf(stderr, "ERROR: out of memory\n");
return 1;
}
if(fm->type == FOREIGN_BLOCK_TYPE__AIFF) {
if(!flac__foreign_metadata_read_from_aiff(fm, fn, &error)) {
fprintf(stderr, "ERROR reading chunks from %s: %s\n", fn, error);
return 1;
}
}
else {
if(!flac__foreign_metadata_read_from_wave(fm, fn, &error)) {
fprintf(stderr, "ERROR reading chunks from %s: %s\n", fn, error);
return 1;
}
}
if(0 == (f = fopen(fn, "rb"))) {
fprintf(stderr, "ERROR opening %s for reading\n", fn);
return 1;
}
for(i = 0; i < fm->num_blocks; i++) {
if(fseeko(f, fm->blocks[i].offset, SEEK_SET) < 0) {
fprintf(stderr, "ERROR seeking in %s\n", fn);
return 1;
}
if(fread(buf, 1, 12, f) != 12) {
fprintf(stderr, "ERROR reading %s\n", fn);
return 1;
}
size = unpack32_((const FLAC__byte*)buf+4, fm->type);
printf("block:[%c%c%c%c] size=%08x=(%10u)", buf[0], buf[1], buf[2], buf[3], size, size);
if(i == 0)
printf(" type:[%c%c%c%c]", buf[8], buf[9], buf[10], buf[11]);
else if(fm->type == FOREIGN_BLOCK_TYPE__AIFF && i == fm->audio_block)
printf(" offset size=%08x=(%10u)", fm->ssnd_offset_size, fm->ssnd_offset_size);
printf("\n");
}
fclose(f);
flac__foreign_metadata_delete(fm);
return 0;
}
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