Embedded album art support in MP3/ID3v2 tags.

- Support is limited to non-desync jpeg in id3v2 tags. Other formats (hopefully) follow in the future.
- Embedded album art takes precedence over files in album art files.
- No additional buffers are used, the jpeg is read directly from the audio file.

Flyspray: FS#11216
Author: Yoshihisa Uchida and I

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29259 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 21 insertions, 0 deletions

diff --git a/apps/metadata.h b/apps/metadata.h
index b99d4d09d6..8d20882835 100644
--- a/apps/metadata.h
+++ b/apps/metadata.h
@@ -190,6 +190,22 @@ enum {
     ID3_VER_2_4
 };
 
+#ifdef HAVE_ALBUMART
+enum mp3_aa_type {
+    AA_TYPE_UNSYNC = -1,
+    AA_TYPE_UNKNOWN,
+    AA_TYPE_BMP,
+    AA_TYPE_PNG,
+    AA_TYPE_JPG,
+};
+
+struct mp3_albumart {
+    enum mp3_aa_type type;
+    int size;
+    off_t pos;
+};
+#endif
+
 struct mp3entry {
     char path[MAX_PATH];
     char* title;
@@ -277,6 +293,11 @@ struct mp3entry {
     long album_peak;
 #endif
 
+#ifdef HAVE_ALBUMART
+    bool embed_albumart;
+    struct mp3_albumart albumart;
+#endif
+
     /* Cuesheet support */
     struct cuesheet *cuesheet;