From d1a2e263d9ec0571615fcabde93ff8ca33c16d62 Mon Sep 17 00:00:00 2001
From: hackbard <hackbard>
Date: Thu, 17 Apr 2003 14:51:32 +0000
Subject: [PATCH] initial check in of TAG info c source and shell wrapper

---
 INSTALL    |  4 ++-
 Makefile   | 13 +++++++++
 mp3read.c  | 84 +++++++++++++++++++++++++++++++-----------------------
 readtag.sh |  8 ++++++
 4 files changed, 72 insertions(+), 37 deletions(-)
 create mode 100644 Makefile
 create mode 100755 readtag.sh

diff --git a/INSTALL b/INSTALL
index 76861c2..a430f17 100644
--- a/INSTALL
+++ b/INSTALL
@@ -7,6 +7,8 @@ include main.shtml in your existing webpage.
 it needs physical contact to the mp3 data.
 exchange all entries in main.shtml reading index.shtml 
 to the file sourcing this main.shtml file.
+build mp3read executing a simple "make".
+copy readtag.sh and mp3read in your $PATH location.
 
 2)
 
@@ -20,7 +22,7 @@ adjust the examples !! important, defaults won't work !!
 
 4)
 
-make your mp3 data is mp3db compatible.
+make sure your mp3 data is mp3db compatible.
 that means, no special character and small letters.
 you may test ./make_mp3dbcompat script to do so.
 this will definetly fuck your system, i mean it :)
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..1cc1c80
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,13 @@
+# Makefile of mp3read.c
+
+INCLUDEDIR = /usr/include
+
+CFLAGS = -O3 -Wall
+LIBS =
+
+OBJS = mp3read
+
+all: mp3read
+
+clean:
+	rm $(OBJS)
diff --git a/mp3read.c b/mp3read.c
index 0236f31..b8c527f 100644
--- a/mp3read.c
+++ b/mp3read.c
@@ -1,6 +1,7 @@
-/* read mp3 info, hackbard */
+/* read mp3 header & tag, author: hackbard */
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -8,9 +9,17 @@
 #include <string.h>
 #include <errno.h>
 
-#define MAX_READ 1024
+#define ID_TAG_SIZE 128
+#define MAX_BUF_SIZE 32
+#define MAX_TITLE 30
+#define MAX_ARTIST 30
+#define MAX_ALBUM 30
+#define MAX_YEAR 4
+#define MAX_COMMENT 30
+#define MAX_GENRE 1
+
 #define MAX_FILENAME 32
-#define MAX_VER_ID 64
+
 
 /*
 info:
@@ -19,51 +28,54 @@ http://www.dv.co.yu/mpgscript/mpeghdr.htm
 
 int main (int argc,char **argv)
 {
- int file_fd,exit,count;
- unsigned char buf;
- unsigned char header[3];
- char mpeg_ver_id[MAX_VER_ID];
+ int file_fd;
+ int file_size;
+ unsigned char buf[MAX_BUF_SIZE];
  char filename[MAX_FILENAME];
 
  strcpy(filename,argv[1]);
+ file_size=atoi(argv[2]);
 
  if((file_fd=open(filename,O_RDONLY))<=0) {
   puts("open failed");
   return -23;
  }
 
- count=0;
- exit=0;
- while(!exit) {
-  printf("count=%d\n",count++);
-  read(file_fd,&buf,1);
-  if(buf==0xff) {
-   read(file_fd,&buf,1);
-   if(buf>=0xe0) {
-    puts("got frame header:");
-    exit=1;
-    header[0]=buf;
-    read(file_fd,header+1,2);
-
-    printf("debug: %x%x%x \n",header[0],header[1],header[2]);
-  
-    if(((header[0]&0x18)>>3)==0x00) strcpy(mpeg_ver_id,"MPEG Version 2.5");
-    else if(((header[0]&0x18)>>3)==0x10) strcpy(mpeg_ver_id,"MPEG Version 2 (ISO/IEC 13818-3)");
-    else if(((header[0]&0x18)>>3)==0x11) strcpy(mpeg_ver_id,"MPEG Version 1 (ISO/IEC 11172-3)");
-    else strcpy(mpeg_ver_id,"unknown");
-
-    printf("version: %s\n",mpeg_ver_id);
-   }
-  }
+ if((lseek(file_fd,file_size-ID_TAG_SIZE,SEEK_SET))<0) {
+  puts("cannot seek to id tag");
+  return -23;
+ }
+
+ /* verify TAG now */
+ if((read(file_fd,&buf,3))<3) {
+  puts("read failed (1)");
+  return -23;
  }
 
+ if(strncmp(buf,"TAG",3)) {
+  puts("TAG not found");
+  return -23;
+ }
+
+ read(file_fd,&buf,MAX_TITLE);
+ printf("title: %s\n",buf);
+
+ read(file_fd,&buf,MAX_ARTIST);
+ printf("artist: %s\n",buf);
+
+ read(file_fd,&buf,MAX_ALBUM);
+ printf("album: %s\n",buf);
+
+ read(file_fd,&buf,MAX_YEAR);
+ printf("year: %s\n",buf);
+
+ read(file_fd,&buf,MAX_COMMENT);
+ printf("comment: %s\n",buf);
+
+ read(file_fd,&buf,MAX_GENRE);
+ printf("genre: %c\n",*buf);
+
  close(file_fd);
  
- puts("");
- puts("done");
- 
  return 23;
 }
-
-
-
diff --git a/readtag.sh b/readtag.sh
new file mode 100755
index 0000000..972ae5d
--- /dev/null
+++ b/readtag.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# read the tag using mp3read
+
+size=`ls -al $1 | awk '{ printf $5 }'`
+
+./mp3read $1 $size
+
-- 
2.20.1