src/flac/iffscan.c

   1 /* iffscan - Simple AIFF/RIFF chunk scanner
   2  * Copyright (C) 2007-2009  Josh Coalson
   3  * Copyright (C) 2011-2014  Xiph.Org Foundation
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include <config.h>
  22 #endif
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include "share/compat.h"
  28 #include "foreign_metadata.h"
  29
  30 static FLAC__uint32 unpack32be_(const FLAC__byte *b)
  31 {
  32         return ((FLAC__uint32)b[0]<<24) + ((FLAC__uint32)b[1]<<16) + ((FLAC__uint32)b[2]<<8) + (FLAC__uint32)b[3];
  33 }
  34
  35 static FLAC__uint32 unpack32le_(const FLAC__byte *b)
  36 {
  37         return (FLAC__uint32)b[0] + ((FLAC__uint32)b[1]<<8) + ((FLAC__uint32)b[2]<<16) + ((FLAC__uint32)b[3]<<24);
  38 }
  39
  40 static FLAC__uint64 unpack64le_(const FLAC__byte *b)
  41 {
  42         return (FLAC__uint64)b[0] + ((FLAC__uint64)b[1]<<8) + ((FLAC__uint64)b[2]<<16) + ((FLAC__uint64)b[3]<<24) + ((FLAC__uint64)b[4]<<32) + ((FLAC__uint64)b[5]<<40) + ((FLAC__uint64)b[6]<<48) + ((FLAC__uint64)b[7]<<56);
  43 }
  44
  45 static 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
  53 int main(int argc, char *argv[])
  54 {
  55         FILE *f;
  56         char buf[36];
  57         foreign_metadata_t *fm;
  58         const char *fn, *error;
  59         size_t i;
  60         FLAC__uint32 size;
  61
  62 #ifdef _WIN32
  63         if (get_utf8_argv(&argc, &argv) != 0) {
  64                 fprintf(stderr, "ERROR: failed to convert command line parameters to UTF-8\n");
  65                 return 1;
  66         }
  67 #endif
  68
  69         if(argc != 2) {
  70                 flac_fprintf(stderr, "usage: %s { file.wav | file.aif }\n", argv[0]);
  71                 return 1;
  72         }
  73         fn = argv[1];
  74         if(0 == (f = flac_fopen(fn, "rb")) || fread(buf, 1, 4, f) != 4) {
  75                 flac_fprintf(stderr, "ERROR opening %s for reading\n", fn);
  76                 return 1;
  77         }
  78         fclose(f);
  79         if(0 == (fm = flac__foreign_metadata_new(memcmp(buf, "RIFF", 4) && memcmp(buf, "RF64", 4)? FOREIGN_BLOCK_TYPE__AIFF : FOREIGN_BLOCK_TYPE__RIFF))) {
  80                 flac_fprintf(stderr, "ERROR: out of memory\n");
  81                 return 1;
  82         }
  83         if(fm->type == FOREIGN_BLOCK_TYPE__AIFF) {
  84                 if(!flac__foreign_metadata_read_from_aiff(fm, fn, &error)) {
  85                         flac_fprintf(stderr, "ERROR reading chunks from %s: %s\n", fn, error);
  86                         return 1;
  87                 }
  88         }
  89         else {
  90                 if(!flac__foreign_metadata_read_from_wave(fm, fn, &error)) {
  91                         flac_fprintf(stderr, "ERROR reading chunks from %s: %s\n", fn, error);
  92                         return 1;
  93                 }
  94         }
  95         if(0 == (f = flac_fopen(fn, "rb"))) {
  96                 flac_fprintf(stderr, "ERROR opening %s for reading\n", fn);
  97                 return 1;
  98         }
  99         for(i = 0; i < fm->num_blocks; i++) {
 100                 if(fseeko(f, fm->blocks[i].offset, SEEK_SET) < 0) {
 101                         flac_fprintf(stderr, "ERROR seeking in %s\n", fn);
 102                         return 1;
 103                 }
 104                 if(fread(buf, 1, i==0?12:8, f) != (i==0?12:8)) {
 105                         flac_fprintf(stderr, "ERROR reading %s\n", fn);
 106                         return 1;
 107                 }
 108                 size = unpack32_((const FLAC__byte*)buf+4, fm->type);
 109                 printf("block:[%c%c%c%c] size=%08x=(%10u)", buf[0], buf[1], buf[2], buf[3], size, size);
 110                 if(i == 0)
 111                         printf(" type:[%c%c%c%c]", buf[8], buf[9], buf[10], buf[11]);
 112                 else if(fm->type == FOREIGN_BLOCK_TYPE__AIFF && i == fm->audio_block)
 113                         printf(" offset size=%08x=(%10u)", fm->ssnd_offset_size, fm->ssnd_offset_size);
 114                 else if(fm->type == FOREIGN_BLOCK_TYPE__RIFF && i == 1 && !memcmp(buf, "ds64", 4)) {
 115                         if(fread(buf+8, 1, 36-8, f) != 36-8) {
 116                                 flac_fprintf(stderr, "ERROR reading %s\n", fn);
 117                                 return 1;
 118                         }
 119                         printf(" RIFF size=%016" PRIx64 "=(" PRIu64 ")", unpack64le_(buf+8), unpack64le_(buf+8));
 120                         printf(" data size=%016" PRIx64 "=(" PRIu64 ")", unpack64le_(buf+16), unpack64le_(buf+16));
 121                         printf(" sample count=%016" PRIx64 "=(" PRIu64 ")", unpack64le_(buf+24), unpack64le_(buf+24));
 122                         printf(" table size=%08x=(%u)", unpack32le_(buf+32), unpack32le_(buf+32));
 123                 }
 124                 printf("\n");
 125         }
 126         fclose(f);
 127         flac__foreign_metadata_delete(fm);
 128         return 0;
 129 }