Wave/Wave64/vox metadata parser: optimize just a little.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24992 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 10 insertions, 5 deletions

diff --git a/apps/metadata/vox.c b/apps/metadata/vox.c
index 2d937e2c73..3f4e5d553c 100644
--- a/apps/metadata/vox.c
+++ b/apps/metadata/vox.c
@@ -32,12 +32,17 @@
 
 bool get_vox_metadata(int fd, struct mp3entry* id3)
 {
-    /* vox is headerless format */
-
+    /*
+     * vox is headerless format
+     *
+     * frequency:     8000 Hz
+     * channels:      mono
+     * bitspersample: 4
+     */
     id3->frequency = 8000;
-    id3->vbr = false;   /* All VOX files are CBR */
-    id3->filesize = filesize(fd);
-    id3->length = ((int64_t) id3->filesize * 2000) / id3->frequency;
+    id3->vbr       = false;   /* All VOX files are CBR */
+    id3->filesize  = filesize(fd);
+    id3->length    = id3->filesize >> 2;
 
     return true;
 }