From 15ca09106da0fc332ce7b9d999c69be573bf6f5b Mon Sep 17 00:00:00 2001
From: Dave Chapman <dave@dchapman.com>
Date: Thu, 1 Dec 2005 20:39:19 +0000
Subject: Set appropriate codec type for .m4a files (ALAC or AAC) inside
 get_metadata().   probe_file_format() is no longer an exported function. 
 Make get_metadata() return false if it can not read the metadata - on the
 assumption that the codec will also fail.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8118 a1c6a512-1295-4272-9138-f99709370657
---
 apps/metadata.c | 35 +++++++++++++++++------------------
 apps/metadata.h |  1 -
 2 files changed, 17 insertions(+), 19 deletions(-)

(limited to 'apps')

diff --git a/apps/metadata.c b/apps/metadata.c
index 49780b5860..740f3d8f9a 100644
--- a/apps/metadata.c
+++ b/apps/metadata.c
@@ -1181,16 +1181,12 @@ static bool get_m4a_metadata(int fd, struct mp3entry* id3)
                entry_size=(buf[i]<<24)|(buf[i+1]<<16)|(buf[i+2]<<8)|buf[i+3];
                i+=4;
 
-               /* Check the codec type - 'alac' for ALAC, 'mp4a' for AAC */
-               if ((id3->codectype==AFMT_ALAC) && 
-                   (memcmp(&buf[i],"alac",4)!=0)) {
-                 logf("Not an ALAC file\n");
-                 return false;
-               }
-
-               if ((id3->codectype==AFMT_AAC) && 
-                   (memcmp(&buf[i],"mp4a",4)!=0)) {
-                 logf("Not a MP4 AAC file\n");
+               if (memcmp(&buf[i],"alac",4)==0) {
+                  id3->codectype=AFMT_ALAC;
+               } else if (memcmp(&buf[i],"mp4a",4)==0) {
+                  id3->codectype=AFMT_AAC;
+               } else {
+                 logf("Not an ALAC or AAC file\n");
                  return false;
                }
 
@@ -1330,7 +1326,7 @@ static bool get_musepack_metadata(int fd, struct mp3entry *id3)
 }
 
 /* Simple file type probing by looking at the filename extension. */
-unsigned int probe_file_format(const char *filename)
+static unsigned int probe_file_format(const char *filename)
 {
     char *suffix;
     unsigned int i;
@@ -1364,12 +1360,11 @@ bool get_metadata(struct track_info* track, int fd, const char* trackname,
     unsigned char* buf;
     unsigned long totalsamples;
     int i;
-      
-    /* We should detect the codec type here. */
+
+    /* Take our best guess at the codec type based on file extension */
     track->id3.codectype = probe_file_format(trackname);
-    
-    /* Load codec specific track tag information. */
-    
+
+    /* Load codec specific track tag information and confirm the codec type. */
     switch (track->id3.codectype) 
     {
     case AFMT_MPA_L1:
@@ -1518,7 +1513,7 @@ bool get_metadata(struct track_info* track, int fd, const char* trackname,
     case AFMT_AAC:
         if (!get_m4a_metadata(fd, &(track->id3)))
         {
-//            return false;
+            return false;
         }
 
         break;
@@ -1533,11 +1528,15 @@ bool get_metadata(struct track_info* track, int fd, const char* trackname,
         /* TODO: read the id3v2 header if it exists */
         break;
 
-    /* If we don't know how to read the metadata, just store the filename */
     default:
+        /* If we don't know how to read the metadata, assume we can't play 
+           the file */
+        return false;
         break;
     }
 
+    /* We have successfully read the metadata from the file */
+
     lseek(fd, 0, SEEK_SET);
     strncpy(track->id3.path, trackname, sizeof(track->id3.path));
     track->taginfo_ready = true;
diff --git a/apps/metadata.h b/apps/metadata.h
index f790146041..1e07a18277 100644
--- a/apps/metadata.h
+++ b/apps/metadata.h
@@ -22,7 +22,6 @@
 
 #include "playback.h"
 
-unsigned int probe_file_format(const char *filename);
 bool get_metadata(struct track_info* track, int fd, const char* trackname,
                   bool v1first);
 
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