NOTE! the 'mp3entry' struct grew quite a bit now, as the previously static

buffers were moved into the struct instead and thus we enable the mp3info()
function to be called in a re-entrant way. Just don't allocate that struct
on the stack without careful consideration!


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@896 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 13 insertions, 10 deletions

diff --git a/firmware/id3.c b/firmware/id3.c
index 8133f7c4f6..2c1f85e0ae 100644
--- a/firmware/id3.c
+++ b/firmware/id3.c
@@ -115,7 +115,6 @@ setid3v1title(int fd, mp3entry *entry)
     char buffer[31];
     int offsets[3] = {-95,-65,-125};
     int i;
-    static char keepit[3][32];
 
     for(i=0;i<3;i++) {
         if(-1 == lseek(fd, offsets[i], SEEK_END))
@@ -128,16 +127,16 @@ setid3v1title(int fd, mp3entry *entry)
         if(buffer[0]) {
             switch(i) {
             case 0:
-                strcpy(keepit[0], buffer);
-                entry->artist = keepit[0];
+                strcpy(entry->id3v1buf[0], buffer);
+                entry->artist = entry->id3v1buf[0];
                 break;
             case 1:
-                strcpy(keepit[1], buffer);
-                entry->album = keepit[1];
+                strcpy(entry->id3v1buf[1], buffer);
+                entry->album = entry->id3v1buf[1];
                 break;
             case 2:
-                strcpy(keepit[2], buffer);
-                entry->title = keepit[2];
+                strcpy(entry->id3v1buf[2], buffer);
+                entry->title = entry->id3v1buf[2];
                 break;
             }
         }
@@ -166,8 +165,8 @@ setid3v2title(int fd, mp3entry *entry)
     char *album = NULL;
     char header[10];
     unsigned short int version;
-    static char buffer[512];
     int titlen=0, artistn=0, albumn=0;   
+    char *buffer = entry->id3v2buf;
         
     /* 10 = headerlength */
     if(entry->id3v2len < 10)
@@ -183,8 +182,8 @@ setid3v2title(int fd, mp3entry *entry)
     /* Read all frames in the tag */
     size = entry->id3v2len - 10;
 
-    if(size >= (int)sizeof(buffer))
-        size = sizeof(buffer)-1;
+    if(size >= (int)sizeof(entry->id3v2buf))
+        size = sizeof(entry->id3v2buf)-1;
 
     if(size != read(fd, buffer, size)) {
         free(buffer);
diff --git a/firmware/id3.h b/firmware/id3.h
index 3f7be7bd3f..9c8d54aab8 100644
--- a/firmware/id3.h
+++ b/firmware/id3.h
@@ -29,6 +29,10 @@ struct mp3entry {
     int id3v1len;
     int filesize; /* in bytes */
     int length;   /* song length */
+
+    /* these following two fields are used for local buffering */
+    char id3v2buf[300];
+    char id3v1buf[3][32];
 };
 
 typedef struct mp3entry mp3entry;