demux: libmp4: add itunes special atoms

modules/demux/mp4/libmp4.c

@@ -3710,7 +3710,10 @@ static const struct
     { ATOM_0xa9too, MP4_ReadBox_0xa9xxx,      MP4_FreeBox_0xa9xxx, ATOM_ilst },
     { ATOM_0xa9trk, MP4_ReadBox_0xa9xxx,      MP4_FreeBox_0xa9xxx, ATOM_ilst },
     { ATOM_0xa9wrt, MP4_ReadBox_0xa9xxx,      MP4_FreeBox_0xa9xxx, ATOM_ilst },
+    { ATOM_aART,    MP4_ReadBox_Metadata,     MP4_FreeBox_Common,  ATOM_ilst },
+    { ATOM_atID,    MP4_ReadBox_Metadata,     MP4_FreeBox_Common,  ATOM_ilst }, /* iTunes */
     { ATOM_chpl,    MP4_ReadBox_chpl,         MP4_FreeBox_chpl,    ATOM_ilst },
+    { ATOM_cnID,    MP4_ReadBox_Metadata,     MP4_FreeBox_Common,  ATOM_ilst }, /* iTunes */
     { ATOM_covr,    MP4_ReadBoxContainer,     MP4_FreeBox_Common,  ATOM_ilst },
     { ATOM_disk,    MP4_ReadBox_Metadata,     MP4_FreeBox_Common,  ATOM_ilst },
     { ATOM_gnre,    MP4_ReadBox_Metadata,     MP4_FreeBox_Common,  ATOM_ilst },

modules/demux/mp4/libmp4.h

@@ -278,12 +278,15 @@
 #define ATOM_0xa9thx VLC_FOURCC( 0xa9, 't', 'h', 'x' )
 #define ATOM_0xa9xpd VLC_FOURCC( 0xa9, 'x', 'p', 'd' )
 #define ATOM_0xa9xyz VLC_FOURCC( 0xa9, 'x', 'y', 'z' )
+#define ATOM_aART VLC_FOURCC( 'a', 'A', 'R', 'T' )
 #define ATOM_chpl VLC_FOURCC( 'c', 'h', 'p', 'l' )
 #define ATOM_disk VLC_FOURCC( 'd', 'i', 's', 'k' )
 #define ATOM_WLOC VLC_FOURCC( 'W', 'L', 'O', 'C' )
 
 #define ATOM_meta VLC_FOURCC( 'm', 'e', 't', 'a' )
+#define ATOM_atID VLC_FOURCC( 'a', 't', 'I', 'D' )
 #define ATOM_ilst VLC_FOURCC( 'i', 'l', 's', 't' )
+#define ATOM_cnID VLC_FOURCC( 'c', 'n', 'I', 'D' )
 #define ATOM_covr VLC_FOURCC( 'c', 'o', 'v', 'r' )
 
 #define ATOM_chap VLC_FOURCC( 'c', 'h', 'a', 'p' )

modules/demux/mp4/meta.c

@@ -88,6 +88,7 @@ static const struct
     { ATOM_0xa9sol, N_("Soloist") },
     { ATOM_0xa9thx, N_("Thanks") },
     { ATOM_0xa9xpd, N_("Executive Producer") },
+    { ATOM_aART,    N_("Album Artist") },
     { ATOM_vndr,    N_("Vendor") },
     { 0, "" },
 };
@@ -239,12 +240,36 @@ static bool Matchcom_apple_quicktime( vlc_meta_t *p_meta, const char *psz_naming
 static void SetupmdirMeta( vlc_meta_t *p_meta, MP4_Box_t *p_box )
 {
     bool b_matched = true;
+    const MP4_Box_t *p_data = MP4_BoxGet( p_box, "data" );
     /* XXX Becarefull p_udta can have box that are not 0xa9xx */
     switch( p_box->i_type )
     {
+    case ATOM_atID:
+    {
+        if ( p_data && BOXDATA(p_data) && BOXDATA(p_data)->i_blob >= 4 &&
+             BOXDATA(p_data)->e_wellknowntype == DATA_WKT_BE_SIGNED )
+        {
+            char psz_utf[11];
+            snprintf( psz_utf, sizeof( psz_utf ), "%"PRId32,
+                      GetDWBE(BOXDATA(p_data)->p_blob) );
+            vlc_meta_AddExtra( p_meta, N_("iTunes Account ID"), psz_utf );
+        }
+        break;
+    }
+    case ATOM_cnID:
+    {
+        if ( p_data && BOXDATA(p_data) && BOXDATA(p_data)->i_blob >= 4 &&
+             BOXDATA(p_data)->e_wellknowntype == DATA_WKT_BE_SIGNED )
+        {
+            char psz_utf[11];
+            snprintf( psz_utf, sizeof( psz_utf ), "%"PRId32,
+                      GetDWBE(BOXDATA(p_data)->p_blob) );
+            vlc_meta_AddExtra( p_meta, N_("iTunes Catalog ID"), psz_utf );
+        }
+        break;
+    }
     case ATOM_disk:
     {
-        const MP4_Box_t *p_data = MP4_BoxGet( p_box, "data" );
         if ( p_data && BOXDATA(p_data) && BOXDATA(p_data)->i_blob >= 6 &&
              BOXDATA(p_data)->e_wellknowntype == DATA_WKT_RESERVED )
         {
@@ -258,7 +283,6 @@ static void SetupmdirMeta( vlc_meta_t *p_meta, MP4_Box_t *p_box )
     }
     case ATOM_gnre:
     {
-        const MP4_Box_t *p_data = MP4_BoxGet( p_box, "data" );
         if ( p_data && BOXDATA(p_data) && BOXDATA(p_data)->i_blob >= 2 &&
              BOXDATA(p_data)->e_wellknowntype == DATA_WKT_RESERVED )
         {
@@ -270,7 +294,6 @@ static void SetupmdirMeta( vlc_meta_t *p_meta, MP4_Box_t *p_box )
     }
     case ATOM_trkn:
     {
-        const MP4_Box_t *p_data = MP4_BoxGet( p_box, "data" );
         if ( p_data && BOXDATA(p_data) && BOXDATA(p_data)->i_blob >= 4 &&
              BOXDATA(p_data)->e_wellknowntype == DATA_WKT_RESERVED )
         {