1/* iffscan - Simple AIFF/RIFF chunk scanner 2 * Copyright (C) 2007 Josh Coalson 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 2 7 * of the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 */ 18 19#if HAVE_CONFIG_H 20# include <config.h> 21#endif 22 23#include <stdio.h> 24#include <stdlib.h> 25#include <string.h> 26#if defined _MSC_VER || defined __MINGW32__ 27#include <sys/types.h> /* for off_t */ 28#if _MSC_VER <= 1600 /* @@@ [2G limit] */ 29#define fseeko fseek 30#define ftello ftell 31#endif 32#endif 33#include "foreign_metadata.h" 34 35static FLAC__uint32 unpack32be_(const FLAC__byte *b) 36{ 37 return ((FLAC__uint32)b[0]<<24) + ((FLAC__uint32)b[1]<<16) + ((FLAC__uint32)b[2]<<8) + (FLAC__uint32)b[3]; 38} 39 40static FLAC__uint32 unpack32le_(const FLAC__byte *b) 41{ 42 return (FLAC__uint32)b[0] + ((FLAC__uint32)b[1]<<8) + ((FLAC__uint32)b[2]<<16) + ((FLAC__uint32)b[3]<<24); 43} 44 45static FLAC__uint32 unpack32_(const FLAC__byte *b, foreign_block_type_t type) 46{ 47 if(type == FOREIGN_BLOCK_TYPE__AIFF) 48 return unpack32be_(b); 49 else 50 return unpack32le_(b); 51} 52 53int main(int argc, char *argv[]) 54{ 55 FILE *f; 56 char buf[12]; 57 foreign_metadata_t *fm; 58 const char *fn, *error; 59 size_t i; 60 FLAC__uint32 size; 61 62 if(argc != 2) { 63 fprintf(stderr, "usage: %s { file.wav | file.aif }\n", argv[0]); 64 return 1; 65 } 66 fn = argv[1]; 67 if(0 == (f = fopen(fn, "rb")) || fread(buf, 1, 4, f) != 4) { 68 fprintf(stderr, "ERROR opening %s for reading\n", fn); 69 return 1; 70 } 71 fclose(f); 72 if(0 == (fm = flac__foreign_metadata_new(memcmp(buf, "RIFF", 4)? FOREIGN_BLOCK_TYPE__AIFF : FOREIGN_BLOCK_TYPE__RIFF))) { 73 fprintf(stderr, "ERROR: out of memory\n"); 74 return 1; 75 } 76 if(fm->type == FOREIGN_BLOCK_TYPE__AIFF) { 77 if(!flac__foreign_metadata_read_from_aiff(fm, fn, &error)) { 78 fprintf(stderr, "ERROR reading chunks from %s: %s\n", fn, error); 79 return 1; 80 } 81 } 82 else { 83 if(!flac__foreign_metadata_read_from_wave(fm, fn, &error)) { 84 fprintf(stderr, "ERROR reading chunks from %s: %s\n", fn, error); 85 return 1; 86 } 87 } 88 if(0 == (f = fopen(fn, "rb"))) { 89 fprintf(stderr, "ERROR opening %s for reading\n", fn); 90 return 1; 91 } 92 for(i = 0; i < fm->num_blocks; i++) { 93 if(fseeko(f, fm->blocks[i].offset, SEEK_SET) < 0) { 94 fprintf(stderr, "ERROR seeking in %s\n", fn); 95 return 1; 96 } 97 if(fread(buf, 1, 12, f) != 12) { 98 fprintf(stderr, "ERROR reading %s\n", fn); 99 return 1; 100 } 101 size = unpack32_((const FLAC__byte*)buf+4, fm->type); 102 printf("block:[%c%c%c%c] size=%08x=(%10u)", buf[0], buf[1], buf[2], buf[3], size, size); 103 if(i == 0) 104 printf(" type:[%c%c%c%c]", buf[8], buf[9], buf[10], buf[11]); 105 else if(fm->type == FOREIGN_BLOCK_TYPE__AIFF && i == fm->audio_block) 106 printf(" offset size=%08x=(%10u)", fm->ssnd_offset_size, fm->ssnd_offset_size); 107 printf("\n"); 108 } 109 fclose(f); 110 flac__foreign_metadata_delete(fm); 111 return 0; 112} 113