import mp4ff, since its not installed correctly by faad2

git-svn-id: https://svn.musicpd.org/mpd/trunk@265 09075e82-0dd4-0310-85a5-a0d7c8717e4f

17 files changed, 5398 insertions, 2 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 4391d61be..808d14cfb 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,5 +1,5 @@
 bin_PROGRAMS = mpd
-SUBDIRS = $(ID3_SUBDIR) $(MAD_SUBDIR)
+SUBDIRS = $(ID3_SUBDIR) $(MAD_SUBDIR) $(MP4FF_SUBDIR)
 mpd_headers = buffer2array.h interface.h command.h playlist.h ls.h \
 	song.h list.h directory.h tables.h utils.h path.h mp3_decode.h \
 	tag.h player.h listen.h conf.h ogg_decode.h volume.h flac_decode.h \
@@ -12,4 +12,4 @@ mpd_SOURCES = main.c buffer2array.c interface.c command.c playlist.c ls.c \
 	audiofile_decode.c charConv.c permission.c pcm_utils.c $(mpd_headers)
 
 mpd_CFLAGS = $(MPD_CFLAGS)
-mpd_LDADD = $(MPD_LIBS) $(ID3_LIB) $(MAD_LIB)
+mpd_LDADD = $(MPD_LIBS) $(ID3_LIB) $(MAD_LIB) $(MP4FF_LIB)
diff --git a/src/mp4ff/Makefile.am b/src/mp4ff/Makefile.am
new file mode 100644
index 000000000..251978c8b
--- /dev/null
+++ b/src/mp4ff/Makefile.am
@@ -0,0 +1,7 @@
+noinst_LTLIBRARIES = libmp4ff.la
+
+noinst_HEADERS = mp4ff.h
+
+libmp4ff_la_SOURCES = mp4ff.c mp4atom.c mp4meta.c mp4sample.c mp4util.c \
+   mp4tagupdate.c mp4ff.h mp4ffint.h mp4ff_int_types.h \
+   drms.h drms.c drmstables.h
diff --git a/src/mp4ff/Makefile.in b/src/mp4ff/Makefile.in
new file mode 100644
index 000000000..df9ffebcb
--- /dev/null
+++ b/src/mp4ff/Makefile.in
@@ -0,0 +1,373 @@
+# Makefile.in generated by automake 1.6.3 from Makefile.am.
+# @configure_input@
+
+# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
+# Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+SHELL = @SHELL@
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+bindir = @bindir@
+sbindir = @sbindir@
+libexecdir = @libexecdir@
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+sysconfdir = @sysconfdir@
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+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+top_builddir = ../..
+
+ACLOCAL = @ACLOCAL@
+AUTOCONF = @AUTOCONF@
+AUTOMAKE = @AUTOMAKE@
+AUTOHEADER = @AUTOHEADER@
+
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
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+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
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+INSTALL_HEADER = $(INSTALL_DATA)
+transform = @program_transform_name@
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+host_alias = @host_alias@
+host_triplet = @host@
+
+EXEEXT = @EXEEXT@
+OBJEXT = @OBJEXT@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+AMTAR = @AMTAR@
+AO_CFLAGS = @AO_CFLAGS@
+AO_LIBS = @AO_LIBS@
+AR = @AR@
+AS = @AS@
+AUDIOFILE_CFLAGS = @AUDIOFILE_CFLAGS@
+AUDIOFILE_CONFIG = @AUDIOFILE_CONFIG@
+AUDIOFILE_LIBS = @AUDIOFILE_LIBS@
+AWK = @AWK@
+CC = @CC@
+CCAS = @CCAS@
+CCASFLAGS = @CCASFLAGS@
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+GCJFLAGS = @GCJFLAGS@
+ID3_LIB = @ID3_LIB@
+ID3_SUBDIR = @ID3_SUBDIR@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+LIBFLAC_CFLAGS = @LIBFLAC_CFLAGS@
+LIBFLAC_LIBS = @LIBFLAC_LIBS@
+LIBTOOL = @LIBTOOL@
+LN_S = @LN_S@
+MAD_LIB = @MAD_LIB@
+MAD_SUBDIR = @MAD_SUBDIR@
+MP4FF_LIB = @MP4FF_LIB@
+MP4FF_SUBDIR = @MP4FF_SUBDIR@
+MPD_CFLAGS = @MPD_CFLAGS@
+MPD_LIBS = @MPD_LIBS@
+OBJDUMP = @OBJDUMP@
+OGG_CFLAGS = @OGG_CFLAGS@
+OGG_LIBS = @OGG_LIBS@
+PACKAGE = @PACKAGE@
+RANLIB = @RANLIB@
+RC = @RC@
+STRIP = @STRIP@
+VERSION = @VERSION@
+VORBISENC_LIBS = @VORBISENC_LIBS@
+VORBISFILE_LIBS = @VORBISFILE_LIBS@
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+noinst_LTLIBRARIES = libmp4ff.la
+
+noinst_HEADERS = mp4ff.h
+
+libmp4ff_la_SOURCES = mp4ff.c mp4atom.c mp4meta.c mp4sample.c mp4util.c \
+   mp4tagupdate.c mp4ff.h mp4ffint.h mp4ff_int_types.h \
+   drms.h drms.c drmstables.h
+
+subdir = src/mp4ff
+mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
+CONFIG_CLEAN_FILES =
+LTLIBRARIES = $(noinst_LTLIBRARIES)
+
+libmp4ff_la_LDFLAGS =
+libmp4ff_la_LIBADD =
+am_libmp4ff_la_OBJECTS = mp4ff.lo mp4atom.lo mp4meta.lo mp4sample.lo \
+	mp4util.lo mp4tagupdate.lo drms.lo
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+
+DEFS = @DEFS@
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+depcomp = $(SHELL) $(top_srcdir)/depcomp
+am__depfiles_maybe = depfiles
+@AMDEP_TRUE@DEP_FILES = ./$(DEPDIR)/drms.Plo ./$(DEPDIR)/mp4atom.Plo \
+@AMDEP_TRUE@	./$(DEPDIR)/mp4ff.Plo ./$(DEPDIR)/mp4meta.Plo \
+@AMDEP_TRUE@	./$(DEPDIR)/mp4sample.Plo \
+@AMDEP_TRUE@	./$(DEPDIR)/mp4tagupdate.Plo \
+@AMDEP_TRUE@	./$(DEPDIR)/mp4util.Plo
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+	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
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+LINK = $(LIBTOOL) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+CFLAGS = @CFLAGS@
+DIST_SOURCES = $(libmp4ff_la_SOURCES)
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+$(srcdir)/Makefile.in:  Makefile.am  $(top_srcdir)/configure.ac $(ACLOCAL_M4)
+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu  src/mp4ff/Makefile
+Makefile:  $(srcdir)/Makefile.in  $(top_builddir)/config.status
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)
+
+clean-noinstLTLIBRARIES:
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+	@list='$(noinst_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test -z "$dir" && dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+libmp4ff.la: $(libmp4ff_la_OBJECTS) $(libmp4ff_la_DEPENDENCIES) 
+	$(LINK)  $(libmp4ff_la_LDFLAGS) $(libmp4ff_la_OBJECTS) $(libmp4ff_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT) core *.core
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/drms.Plo@am__quote@
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mp4sample.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mp4tagupdate.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mp4util.Plo@am__quote@
+
+distclean-depend:
+	-rm -rf ./$(DEPDIR)
+
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+	$(COMPILE) -c `test -f '$<' || echo '$(srcdir)/'`$<
+
+.c.obj:
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+@AMDEP_TRUE@	$(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+	$(COMPILE) -c `cygpath -w $<`
+
+.c.lo:
+@AMDEP_TRUE@	source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@	depfile='$(DEPDIR)/$*.Plo' tmpdepfile='$(DEPDIR)/$*.TPlo' @AMDEPBACKSLASH@
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+CCDEPMODE = @CCDEPMODE@
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+
+distclean-libtool:
+	-rm -f libtool
+uninstall-info-am:
+
+ETAGS = etags
+ETAGSFLAGS =
+
+tags: TAGS
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	mkid -fID $$unique
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
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+	test -z "$(ETAGS_ARGS)$$tags$$unique" \
+	  || $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	     $$tags $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
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+	  && gtags -i $(GTAGS_ARGS) $$here
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
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+top_distdir = ../..
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+distdir: $(DISTFILES)
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+	  dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
+	  if test "$$dir" != "$$file" && test "$$dir" != "."; then \
+	    dir="/$$dir"; \
+	    $(mkinstalldirs) "$(distdir)$$dir"; \
+	  else \
+	    dir=''; \
+	  fi; \
+	  if test -d $$d/$$file; then \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
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+	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
+	  else \
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+	    || cp -p $$d/$$file $(distdir)/$$file \
+	    || exit 1; \
+	  fi; \
+	done
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+	  INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-rm -f Makefile $(CONFIG_CLEAN_FILES)
+
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+	@echo "it deletes files that may require special tools to rebuild."
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+	uninstall-info-am
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/mp4ff/drms.c b/src/mp4ff/drms.c
new file mode 100644
index 000000000..368b88110
--- /dev/null
+++ b/src/mp4ff/drms.c
@@ -0,0 +1,1043 @@
+/*****************************************************************************
+ * drms.c : DRMS
+ *****************************************************************************
+ * Copyright (C) 2004 VideoLAN
+ * $Id: drms.c,v 1.3 2004/01/11 15:52:18 menno Exp $
+ *
+ * Author: Jon Lech Johansen <jon-vl@nanocrew.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ *****************************************************************************/
+
+#include <stdlib.h>                                      /* malloc(), free() */
+
+#include "mp4ffint.h"
+
+#ifdef ITUNES_DRM
+
+#ifdef _WIN32
+#include <tchar.h>
+#include <shlobj.h>
+#include <windows.h>
+#endif
+
+#include "drms.h"
+#include "drmstables.h"
+
+static __inline uint32_t U32_AT( void * _p )
+{
+    uint8_t * p = (uint8_t *)_p;
+    return ( ((uint32_t)p[0] << 24) | ((uint32_t)p[1] << 16)
+              | ((uint32_t)p[2] << 8) | p[3] );
+}
+
+#define TAOS_INIT( tmp, i ) \
+    memset( tmp, 0, sizeof(tmp) ); \
+    tmp[ i + 0 ] = 0x67452301; \
+    tmp[ i + 1 ] = 0xEFCDAB89; \
+    tmp[ i + 2 ] = 0x98BADCFE; \
+    tmp[ i + 3 ] = 0x10325476;
+
+#define ROR( x, n ) (((x) << (32-(n))) | ((x) >> (n)))
+
+static void init_ctx( uint32_t *p_ctx, uint32_t *p_input )
+{
+    uint32_t i;
+    uint32_t p_tmp[ 6 ];
+
+    p_ctx[ 0 ] = sizeof(*p_input);
+
+    memset( &p_ctx[ 1 + 4 ], 0, sizeof(*p_input) * 4 );
+    memcpy( &p_ctx[ 1 + 0 ], p_input, sizeof(*p_input) * 4 );
+
+    p_tmp[ 0 ] = p_ctx[ 1 + 3 ];
+
+    for( i = 0; i < sizeof(p_drms_tab1)/sizeof(p_drms_tab1[ 0 ]); i++ )
+    {
+        p_tmp[ 0 ] = ROR( p_tmp[ 0 ], 8 );
+
+        p_tmp[ 5 ] = p_drms_tab2[ (p_tmp[ 0 ] >> 24) & 0xFF ]
+                   ^ ROR( p_drms_tab2[ (p_tmp[ 0 ] >> 16) & 0xFF ], 8 )
+                   ^ ROR( p_drms_tab2[ (p_tmp[ 0 ] >> 8) & 0xFF ], 16 )
+                   ^ ROR( p_drms_tab2[ p_tmp[ 0 ] & 0xFF ], 24 )
+                   ^ p_drms_tab1[ i ]
+                   ^ p_ctx[ 1 + ((i + 1) * 4) - 4 ];
+
+        p_ctx[ 1 + ((i + 1) * 4) + 0 ] = p_tmp[ 5 ];
+        p_tmp[ 5 ] ^= p_ctx[ 1 + ((i + 1) * 4) - 3 ];
+        p_ctx[ 1 + ((i + 1) * 4) + 1 ] = p_tmp[ 5 ];
+        p_tmp[ 5 ] ^= p_ctx[ 1 + ((i + 1) * 4) - 2 ];
+        p_ctx[ 1 + ((i + 1) * 4) + 2 ] = p_tmp[ 5 ];
+        p_tmp[ 5 ] ^= p_ctx[ 1 + ((i + 1) * 4) - 1 ];
+        p_ctx[ 1 + ((i + 1) * 4) + 3 ] = p_tmp[ 5 ];
+
+        p_tmp[ 0 ] = p_tmp[ 5 ];
+    }
+
+    memcpy( &p_ctx[ 1 + 64 ], &p_ctx[ 1 ], sizeof(*p_ctx) * 4 );
+
+    for( i = 4; i < sizeof(p_drms_tab1); i++ )
+    {
+        p_tmp[ 2 ] = p_ctx[ 1 + 4 + (i - 4) ];
+
+        p_tmp[ 0 ] = (((p_tmp[ 2 ] >> 7) & 0x01010101) * 27)
+                   ^ ((p_tmp[ 2 ] & 0xFF7F7F7F) << 1);
+        p_tmp[ 1 ] = (((p_tmp[ 0 ] >> 7) & 0x01010101) * 27)
+                   ^ ((p_tmp[ 0 ] & 0xFF7F7F7F) << 1);
+        p_tmp[ 4 ] = (((p_tmp[ 1 ] >> 7) & 0x01010101) * 27)
+                   ^ ((p_tmp[ 1 ] & 0xFF7F7F7F) << 1);
+
+        p_tmp[ 2 ] ^= p_tmp[ 4 ];
+
+        p_tmp[ 3 ] = ROR( p_tmp[ 1 ] ^ p_tmp[ 2 ], 16 )
+                   ^ ROR( p_tmp[ 0 ] ^ p_tmp[ 2 ], 8 )
+                   ^ ROR( p_tmp[ 2 ], 24 );
+
+        p_ctx[ 1 + 4 + 64 + (i - 4) ] = p_tmp[ 3 ] ^ p_tmp[ 4 ]
+                                      ^ p_tmp[ 1 ] ^ p_tmp[ 0 ];
+    }
+}
+
+static void ctx_xor( uint32_t *p_ctx, uint32_t *p_in, uint32_t *p_out,
+                     uint32_t p_table1[ 256 ], uint32_t p_table2[ 256 ] )
+{
+    uint32_t i, x, y;
+    uint32_t p_tmp1[ 4 ];
+    uint32_t p_tmp2[ 4 ];
+
+    i = p_ctx[ 0 ] * 4;
+
+    p_tmp1[ 0 ] = p_ctx[ 1 + i + 24 ] ^ p_in[ 0 ];
+    p_tmp1[ 1 ] = p_ctx[ 1 + i + 25 ] ^ p_in[ 1 ];
+    p_tmp1[ 2 ] = p_ctx[ 1 + i + 26 ] ^ p_in[ 2 ];
+    p_tmp1[ 3 ] = p_ctx[ 1 + i + 27 ] ^ p_in[ 3 ];
+
+    i += 84;
+
+#define XOR_ROR( p_table, p_tmp, i_ctx ) \
+    p_table[ (p_tmp[ y > 2 ? y - 3 : y + 1 ] >> 24) & 0xFF ] \
+    ^ ROR( p_table[ (p_tmp[ y > 1 ? y - 2 : y + 2 ] >> 16) & 0xFF ], 8 ) \
+    ^ ROR( p_table[ (p_tmp[ y > 0 ? y - 1 : y + 3 ] >> 8) & 0xFF ], 16 ) \
+    ^ ROR( p_table[ p_tmp[ y ] & 0xFF ], 24 ) \
+    ^ p_ctx[ i_ctx ]
+
+    for( x = 0; x < 1; x++ )
+    {
+        memcpy( p_tmp2, p_tmp1, sizeof(p_tmp1) );
+
+        for( y = 0; y < 4; y++ )
+        {
+            p_tmp1[ y ] = XOR_ROR( p_table1, p_tmp2, 1 + i - x + y );
+        }
+    }
+
+    for( ; x < 9; x++ )
+    {
+        memcpy( p_tmp2, p_tmp1, sizeof(p_tmp1) );
+
+        for( y = 0; y < 4; y++ )
+        {
+            p_tmp1[ y ] = XOR_ROR( p_table1, p_tmp2,
+                                   1 + i - x - ((x * 3) - y) );
+        }
+    }
+
+    for( y = 0; y < 4; y++ )
+    {
+        p_out[ y ] = XOR_ROR( p_table2, p_tmp1,
+                              1 + i - x - ((x * 3) - y) );
+    }
+
+#undef XOR_ROR
+}
+
+static void taos( uint32_t *p_buffer, uint32_t *p_input )
+{
+    uint32_t i;
+    uint32_t x = 0;
+    uint32_t p_tmp1[ 4 ];
+    uint32_t p_tmp2[ 4 ];
+
+    memcpy( p_tmp1, p_buffer, sizeof(p_tmp1) );
+
+    p_tmp2[ 0 ] = ((~p_tmp1[ 1 ] & p_tmp1[ 3 ])
+                |   (p_tmp1[ 2 ] & p_tmp1[ 1 ])) + p_input[ x ];
+    p_tmp1[ 0 ] = p_tmp2[ 0 ] + p_tmp1[ 0 ] + p_drms_tab_taos[ x++ ];
+
+    for( i = 0; i < 4; i++ )
+    {
+        p_tmp2[ 0 ] = ((p_tmp1[ 0 ] >> 0x19)
+                    |  (p_tmp1[ 0 ] << 0x7)) + p_tmp1[ 1 ];
+        p_tmp2[ 1 ] = ((~p_tmp2[ 0 ] & p_tmp1[ 2 ])
+                    |   (p_tmp1[ 1 ] & p_tmp2[ 0 ])) + p_input[ x ];
+        p_tmp2[ 1 ] += p_tmp1[ 3 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 3 ] = ((p_tmp2[ 1 ] >> 0x14)
+                    |  (p_tmp2[ 1 ] << 0xC)) + p_tmp2[ 0 ];
+        p_tmp2[ 1 ] = ((~p_tmp1[ 3 ] & p_tmp1[ 1 ])
+                    |   (p_tmp1[ 3 ] & p_tmp2[ 0 ])) + p_input[ x ];
+        p_tmp2[ 1 ] += p_tmp1[ 2 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 2 ] = ((p_tmp2[ 1 ] >> 0xF)
+                    |  (p_tmp2[ 1 ] << 0x11)) + p_tmp1[ 3 ];
+        p_tmp2[ 1 ] = ((~p_tmp1[ 2 ] & p_tmp2[ 0 ])
+                    |   (p_tmp1[ 3 ] & p_tmp1[ 2 ])) + p_input[ x ];
+        p_tmp2[ 2 ] = p_tmp2[ 1 ] + p_tmp1[ 1 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 1 ] = ((p_tmp2[ 2 ] << 0x16)
+                    |  (p_tmp2[ 2 ] >> 0xA)) + p_tmp1[ 2 ];
+        if( i == 3 )
+        {
+            p_tmp2[ 1 ] = ((~p_tmp1[ 3 ] & p_tmp1[ 2 ])
+                        |   (p_tmp1[ 3 ] & p_tmp1[ 1 ])) + p_input[ 1 ];
+        }
+        else
+        {
+            p_tmp2[ 1 ] = ((~p_tmp1[ 1 ] & p_tmp1[ 3 ])
+                        |   (p_tmp1[ 2 ] & p_tmp1[ 1 ])) + p_input[ x ];
+        }
+        p_tmp1[ 0 ] = p_tmp2[ 0 ] + p_tmp2[ 1 ] + p_drms_tab_taos[ x++ ];
+    }
+
+    for( i = 0; i < 4; i++ )
+    {
+        uint8_t p_table[ 4 ][ 4 ] =
+        {
+            {  6, 11,  0,  5 },
+            { 10, 15,  4,  9 },
+            { 14,  3,  8, 13 },
+            {  2,  7, 12,  5 }
+        };
+
+        p_tmp2[ 0 ] = ((p_tmp1[ 0 ] >> 0x1B)
+                    |  (p_tmp1[ 0 ] << 0x5)) + p_tmp1[ 1 ];
+        p_tmp2[ 1 ] = ((~p_tmp1[ 2 ] & p_tmp1[ 1 ])
+                    |   (p_tmp1[ 2 ] & p_tmp2[ 0 ]))
+                    +   p_input[ p_table[ i ][ 0 ] ];
+        p_tmp2[ 1 ] += p_tmp1[ 3 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 3 ] = ((p_tmp2[ 1 ] >> 0x17)
+                    |  (p_tmp2[ 1 ] << 0x9)) + p_tmp2[ 0 ];
+        p_tmp2[ 1 ] = ((~p_tmp1[ 1 ] & p_tmp2[ 0 ])
+                    |   (p_tmp1[ 3 ] & p_tmp1[ 1 ]))
+                    +   p_input[ p_table[ i ][ 1 ] ];
+        p_tmp2[ 1 ] += p_tmp1[ 2 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 2 ] = ((p_tmp2[ 1 ] >> 0x12)
+                    |  (p_tmp2[ 1 ] << 0xE)) + p_tmp1[ 3 ];
+        p_tmp2[ 1 ] = ((~p_tmp2[ 0 ] & p_tmp1[ 3 ])
+                    |   (p_tmp1[ 2 ] & p_tmp2[ 0 ]))
+                    +   p_input[ p_table[ i ][ 2 ] ];
+        p_tmp2[ 1 ] += p_tmp1[ 1 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 1 ] = ((p_tmp2[ 1 ] << 0x14)
+                    |  (p_tmp2[ 1 ] >> 0xC)) + p_tmp1[ 2 ];
+        if( i == 3 )
+        {
+            p_tmp2[ 1 ] = (p_tmp1[ 3 ] ^ p_tmp1[ 2 ] ^ p_tmp1[ 1 ])
+                        + p_input[ p_table[ i ][ 3 ] ];
+        }
+        else
+        {
+            p_tmp2[ 1 ] = ((~p_tmp1[ 3 ] & p_tmp1[ 2 ])
+                        |   (p_tmp1[ 3 ] & p_tmp1[ 1 ]))
+                        +   p_input[ p_table[ i ][ 3 ] ];
+        }
+        p_tmp1[ 0 ] = p_tmp2[ 0 ] + p_tmp2[ 1 ] + p_drms_tab_taos[ x++ ];
+    }
+
+    for( i = 0; i < 4; i++ )
+    {
+        uint8_t p_table[ 4 ][ 4 ] =
+        {
+            {  8, 11, 14,  1 },
+            {  4,  7, 10, 13 },
+            {  0,  3,  6,  9 },
+            { 12, 15,  2,  0 }
+        };
+
+        p_tmp2[ 0 ] = ((p_tmp1[ 0 ] >> 0x1C)
+                    |  (p_tmp1[ 0 ] << 0x4)) + p_tmp1[ 1 ];
+        p_tmp2[ 1 ] = (p_tmp1[ 2 ] ^ p_tmp1[ 1 ] ^ p_tmp2[ 0 ])
+                    + p_input[ p_table[ i ][ 0 ] ];
+        p_tmp2[ 1 ] += p_tmp1[ 3 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 3 ] = ((p_tmp2[ 1 ] >> 0x15)
+                    |  (p_tmp2[ 1 ] << 0xB)) + p_tmp2[ 0 ];
+        p_tmp2[ 1 ] = (p_tmp1[ 3 ] ^ p_tmp1[ 1 ] ^ p_tmp2[ 0 ])
+                    + p_input[ p_table[ i ][ 1 ] ];
+        p_tmp2[ 1 ] += p_tmp1[ 2 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 2 ] = ((p_tmp2[ 1 ] >> 0x10)
+                    |  (p_tmp2[ 1 ] << 0x10)) + p_tmp1[ 3 ];
+        p_tmp2[ 1 ] = (p_tmp1[ 3 ] ^ p_tmp1[ 2 ] ^ p_tmp2[ 0 ])
+                    + p_input[ p_table[ i ][ 2 ] ];
+        p_tmp2[ 1 ] += p_tmp1[ 1 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 1 ] = ((p_tmp2[ 1 ] << 0x17)
+                    |  (p_tmp2[ 1 ] >> 0x9)) + p_tmp1[ 2 ];
+        if( i == 3 )
+        {
+            p_tmp2[ 1 ] = ((~p_tmp1[ 3 ] | p_tmp1[ 1 ]) ^ p_tmp1[ 2 ])
+                        +   p_input[ p_table[ i ][ 3 ] ];
+        }
+        else
+        {
+            p_tmp2[ 1 ] = (p_tmp1[ 3 ] ^ p_tmp1[ 2 ] ^ p_tmp1[ 1 ])
+                        + p_input[ p_table[ i ][ 3 ] ];
+        }
+        p_tmp1[ 0 ] = p_tmp2[ 0 ] + p_tmp2[ 1 ] + p_drms_tab_taos[ x++ ];
+    }
+
+    for( i = 0; i < 4; i++ )
+    {
+        uint8_t p_table[ 4 ][ 4 ] =
+        {
+            {  7, 14,  5, 12 },
+            {  3, 10,  1,  8 },
+            { 15,  6, 13,  4 },
+            { 11,  2,  9,  0 }
+        };
+
+        p_tmp2[ 0 ] = ((p_tmp1[ 0 ] >> 0x1A)
+                    |  (p_tmp1[ 0 ] << 0x6)) + p_tmp1[ 1 ];
+        p_tmp2[ 1 ] = ((~p_tmp1[ 2 ] | p_tmp2[ 0 ]) ^ p_tmp1[ 1 ])
+                    +   p_input[ p_table[ i ][ 0 ] ];
+        p_tmp2[ 1 ] += p_tmp1[ 3 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 3 ] = ((p_tmp2[ 1 ] >> 0x16)
+                    |  (p_tmp2[ 1 ] << 0xA)) + p_tmp2[ 0 ];
+        p_tmp2[ 1 ] = ((~p_tmp1[ 1 ] | p_tmp1[ 3 ]) ^ p_tmp2[ 0 ])
+                    +   p_input[ p_table[ i ][ 1 ] ];
+        p_tmp2[ 1 ] += p_tmp1[ 2 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 2 ] = ((p_tmp2[ 1 ] >> 0x11)
+                    |  (p_tmp2[ 1 ] << 0xF)) + p_tmp1[ 3 ];
+        p_tmp2[ 1 ] = ((~p_tmp2[ 0 ] | p_tmp1[ 2 ]) ^ p_tmp1[ 3 ])
+                    +   p_input[ p_table[ i ][ 2 ] ];
+        p_tmp2[ 1 ] += p_tmp1[ 1 ] + p_drms_tab_taos[ x++ ];
+
+        p_tmp1[ 1 ] = ((p_tmp2[ 1 ] << 0x15)
+                    |  (p_tmp2[ 1 ] >> 0xB)) + p_tmp1[ 2 ];
+
+        if( i < 3 )
+        {
+            p_tmp2[ 1 ] = ((~p_tmp1[ 3 ] | p_tmp1[ 1 ]) ^ p_tmp1[ 2 ])
+                        +   p_input[ p_table[ i ][ 3 ] ];
+            p_tmp1[ 0 ] = p_tmp2[ 0 ] + p_tmp2[ 1 ] + p_drms_tab_taos[ x++ ];
+        }
+    }
+
+    p_buffer[ 0 ] += p_tmp2[ 0 ];
+    p_buffer[ 1 ] += p_tmp1[ 1 ];
+    p_buffer[ 2 ] += p_tmp1[ 2 ];
+    p_buffer[ 3 ] += p_tmp1[ 3 ];
+}
+
+static void taos_add1( uint32_t *p_buffer,
+                       uint8_t *p_in, uint32_t i_len )
+{
+    uint32_t i;
+    uint32_t x, y;
+    uint32_t p_tmp[ 16 ];
+    uint32_t i_offset = 0;
+
+    x = p_buffer[ 6 ] & 63;
+    y = 64 - x;
+
+    p_buffer[ 6 ] += i_len;
+
+    if( i_len < y )
+    {
+        memcpy( &((uint8_t *)p_buffer)[ 48 + x ], p_in, i_len );
+    }
+    else
+    {
+        if( x )
+        {
+            memcpy( &((uint8_t *)p_buffer)[ 48 + x ], p_in, y );
+            taos( &p_buffer[ 8 ], &p_buffer[ 12 ] );
+            i_offset = y;
+            i_len -= y;
+        }
+
+        if( i_len >= 64 )
+        {
+            for( i = 0; i < i_len / 64; i++ )
+            {
+                memcpy( p_tmp, &p_in[ i_offset ], sizeof(p_tmp) );
+                taos( &p_buffer[ 8 ], p_tmp );
+                i_offset += 64;
+                i_len -= 64;
+            }
+        }
+
+        if( i_len )
+        {
+            memcpy( &p_buffer[ 12 ], &p_in[ i_offset ], i_len );
+        }
+    }
+}
+
+static void taos_end1( uint32_t *p_buffer, uint32_t *p_out )
+{
+    uint32_t x, y;
+
+    x = p_buffer[ 6 ] & 63;
+    y = 63 - x;
+
+    ((uint8_t *)p_buffer)[ 48 + x++ ] = 128;
+
+    if( y < 8 )
+    {
+        memset( &((uint8_t *)p_buffer)[ 48 + x ], 0, y );
+        taos( &p_buffer[ 8 ], &p_buffer[ 12 ] );
+        y = 64;
+        x = 0;
+    }
+
+    memset( &((uint8_t *)p_buffer)[ 48 + x ], 0, y );
+
+    p_buffer[ 26 ] = p_buffer[ 6 ] * 8;
+    p_buffer[ 27 ] = p_buffer[ 6 ] >> 29;
+    taos( &p_buffer[ 8 ], &p_buffer[ 12 ] );
+
+    memcpy( p_out, &p_buffer[ 8 ], sizeof(*p_out) * 4 );
+}
+
+static void taos_add2( uint32_t *p_buffer, uint8_t *p_in, uint32_t i_len )
+{
+    uint32_t i, x;
+    uint32_t p_tmp[ 16 ];
+
+    x = (p_buffer[ 0 ] / 8) & 63;
+    i = p_buffer[ 0 ] + i_len * 8;
+
+    if( i < p_buffer[ 0 ] )
+    {
+        p_buffer[ 1 ] += 1;
+    }
+
+    p_buffer[ 0 ] = i;
+    p_buffer[ 1 ] += i_len >> 29;
+
+    for( i = 0; i < i_len; i++ )
+    {
+        ((uint8_t *)p_buffer)[ 24 + x++ ] = p_in[ i ];
+
+        if( x != 64 )
+            continue;
+
+        memcpy( p_tmp, &p_buffer[ 6 ], sizeof(p_tmp) );
+        taos( &p_buffer[ 2 ], p_tmp );
+    }
+}
+
+static void taos_add2e( uint32_t *p_buffer, uint32_t *p_in, uint32_t i_len )
+{
+    uint32_t i, x, y;
+    uint32_t p_tmp[ 32 ];
+
+    if( i_len )
+    {
+        for( x = i_len; x; x -= y )
+        {
+            y = x > 32 ? 32 : x;
+
+            for( i = 0; i < y; i++ )
+            {
+                p_tmp[ i ] = U32_AT(&p_in[ i ]);
+            }
+        }
+    }
+
+    taos_add2( p_buffer, (uint8_t *)p_tmp, i_len * sizeof(p_tmp[ 0 ]) );
+}
+
+static void taos_end2( uint32_t *p_buffer )
+{
+    uint32_t x;
+    uint32_t p_tmp[ 16 ];
+
+    p_tmp[ 14 ] = p_buffer[ 0 ];
+    p_tmp[ 15 ] = p_buffer[ 1 ];
+
+    x = (p_buffer[ 0 ] / 8) & 63;
+
+    taos_add2( p_buffer, p_drms_tab_tend, 56 - x );
+    memcpy( p_tmp, &p_buffer[ 6 ], 56 );
+    taos( &p_buffer[ 2 ], p_tmp );
+    memcpy( &p_buffer[ 22 ], &p_buffer[ 2 ], sizeof(*p_buffer) * 4 );
+}
+
+static void taos_add3( uint32_t *p_buffer, uint8_t *p_key, uint32_t i_len )
+{
+    uint32_t x, y;
+    uint32_t i = 0;
+
+    x = (p_buffer[ 4 ] / 8) & 63;
+    p_buffer[ 4 ] += i_len * 8;
+
+    if( p_buffer[ 4 ] < i_len * 8 )
+        p_buffer[ 5 ] += 1;
+
+    p_buffer[ 5 ] += i_len >> 29;
+
+    y = 64 - x;
+
+    if( i_len >= y )
+    {
+        memcpy( &((uint8_t *)p_buffer)[ 24 + x ], p_key, y );
+        taos( p_buffer, &p_buffer[ 6 ] );
+
+        i = y;
+        y += 63;
+
+        if( y < i_len )
+        {
+            for( ; y < i_len; y += 64, i += 64 )
+            {
+                taos( p_buffer, (uint32_t *)&p_key[y - 63] );
+            }
+        }
+        else
+        {
+            x = 0;
+        }
+    }
+
+    memcpy( &((uint8_t *)p_buffer)[ 24 + x ], &p_key[ i ], i_len - i );
+}
+
+static int taos_osi( uint32_t *p_buffer )
+{
+    int i_ret = 0;
+
+#ifdef _WIN32
+    HKEY i_key;
+    uint32_t i;
+    DWORD i_size;
+    DWORD i_serial;
+    LPBYTE p_reg_buf;
+
+    static LPCTSTR p_reg_keys[ 3 ][ 2 ] =
+    {
+        {
+            _T("HARDWARE\\DESCRIPTION\\System"),
+            _T("SystemBiosVersion")
+        },
+
+        {
+            _T("HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0"),
+            _T("ProcessorNameString")
+        },
+
+        {
+            _T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion"),
+            _T("ProductId")
+        }
+    };
+
+    taos_add1( p_buffer, "cache-control", 13 );
+    taos_add1( p_buffer, "Ethernet", 8 );
+
+    GetVolumeInformation( _T("C:\\"), NULL, 0, &i_serial,
+                          NULL, NULL, NULL, 0 );
+    taos_add1( p_buffer, (uint8_t *)&i_serial, 4 );
+
+    for( i = 0; i < sizeof(p_reg_keys)/sizeof(p_reg_keys[ 0 ]); i++ )
+    {
+        if( RegOpenKeyEx( HKEY_LOCAL_MACHINE, p_reg_keys[ i ][ 0 ],
+                          0, KEY_READ, &i_key ) == ERROR_SUCCESS )
+        {
+            if( RegQueryValueEx( i_key, p_reg_keys[ i ][ 1 ],
+                                 NULL, NULL, NULL,
+                                 &i_size ) == ERROR_SUCCESS )
+            {
+                p_reg_buf = malloc( i_size );
+
+                if( p_reg_buf != NULL )
+                {
+                    if( RegQueryValueEx( i_key, p_reg_keys[ i ][ 1 ],
+                                         NULL, NULL, p_reg_buf,
+                                         &i_size ) == ERROR_SUCCESS )
+                    {
+                        taos_add1( p_buffer, (uint8_t *)p_reg_buf,
+                                   i_size );
+                    }
+
+                    free( p_reg_buf );
+                }
+            }
+
+            RegCloseKey( i_key );
+        }
+    }
+
+#else
+    i_ret = -1;
+#endif
+
+    return( i_ret );
+}
+
+static int get_sci_data( uint32_t p_sci[ 11 ][ 4 ] )
+{
+    int i_ret = -1;
+
+#ifdef _WIN32
+    HANDLE i_file;
+    DWORD i_size, i_read;
+    TCHAR p_path[ MAX_PATH ];
+    TCHAR *p_filename = _T("\\Apple Computer\\iTunes\\SC Info\\SC Info.sidb");
+
+    typedef HRESULT (WINAPI *SHGETFOLDERPATH)( HWND, int, HANDLE, DWORD,
+                                               LPTSTR );
+
+    HINSTANCE shfolder_dll = NULL;
+    SHGETFOLDERPATH dSHGetFolderPath = NULL;
+
+    if( ( shfolder_dll = LoadLibrary( _T("SHFolder.dll") ) ) != NULL )
+    {
+        dSHGetFolderPath =
+            (SHGETFOLDERPATH)GetProcAddress( shfolder_dll,
+#ifdef _UNICODE
+                                             _T("SHGetFolderPathW") );
+#else
+                                             _T("SHGetFolderPathA") );
+#endif
+    }
+
+    if( dSHGetFolderPath != NULL &&
+        SUCCEEDED( dSHGetFolderPath( NULL, /*CSIDL_COMMON_APPDATA*/ 0x0023,
+                                     NULL, 0, p_path ) ) )
+    {
+        _tcsncat( p_path, p_filename, min( _tcslen( p_filename ),
+                  (MAX_PATH-1) - _tcslen( p_path ) ) );
+
+        i_file = CreateFile( p_path, GENERIC_READ, 0, NULL,
+                             OPEN_EXISTING, 0, NULL );
+        if( i_file != INVALID_HANDLE_VALUE )
+        {
+            i_read = sizeof(p_sci[ 0 ]) * 11;
+            i_size = GetFileSize( i_file, NULL );
+            if( i_size != INVALID_FILE_SIZE && i_size >= i_read )
+            {
+                i_size = SetFilePointer( i_file, 4, NULL, FILE_BEGIN );
+                if( i_size != /*INVALID_SET_FILE_POINTER*/ ((DWORD)-1))
+                {
+                    if( ReadFile( i_file, p_sci, i_read, &i_size, NULL ) &&
+                        i_size == i_read )
+                    {
+                        i_ret = 0;
+                    }
+                }
+            }
+
+            CloseHandle( i_file );
+        }
+    }
+#endif
+
+    return( i_ret );
+}
+
+static void acei_taxs( uint32_t *p_acei, uint32_t i_val )
+{
+    uint32_t i, x;
+
+    i = (i_val / 16) & 15;
+    x = (~(i_val & 15)) & 15;
+
+    if( (i_val & 768) == 768 )
+    {
+        x = (~i) & 15;
+        i = i_val & 15;
+
+        p_acei[ 25 + i ] = p_acei[ 25 + ((16 - x) & 15) ]
+                         + p_acei[ 25 + (15 - x) ];
+    }
+    else if( (i_val & 512) == 512 )
+    {
+        p_acei[ 25 + i ] ^= p_drms_tab_xor[ 15 - i ][ x ];
+    }
+    else if( (i_val & 256) == 256 )
+    {
+        p_acei[ 25 + i ] -= p_drms_tab_sub[ 15 - i ][ x ];
+    }
+    else
+    {
+        p_acei[ 25 + i ] += p_drms_tab_add[ 15 - i ][ x ];
+    }
+}
+
+static void acei( uint32_t *p_acei, uint8_t *p_buffer, uint32_t i_len )
+{
+    uint32_t i, x;
+    uint32_t p_tmp[ 26 ];
+
+    for( i = 5; i < 25; i++ )
+    {
+        if( p_acei[ i ] )
+        {
+            acei_taxs( p_acei, p_acei[ i ] );
+        }
+    }
+
+    TAOS_INIT( p_tmp, 2 );
+    taos_add2e( p_tmp, &p_acei[ 25 ], sizeof(*p_acei) * 4 );
+    taos_end2( p_tmp );
+
+    x = i_len < 16 ? i_len : 16;
+
+    if( x > 0 )
+    {
+        for( i = 0; i < x; i++ )
+        {
+            p_buffer[ i ] ^= ((uint8_t *)&p_tmp)[ 88 + i ];
+        }
+    }
+}
+
+static uint32_t ttov_calc( uint32_t *p_acei )
+{
+    int32_t i_val;
+    uint32_t p_tmp[ 26 ];
+
+    TAOS_INIT( p_tmp, 2 );
+    taos_add2e( p_tmp, &p_acei[ 0 ], 4 );
+    taos_add2e( p_tmp, &p_acei[ 4 ], 1 );
+    taos_end2( p_tmp );
+
+    p_acei[ 4 ]++;
+
+    i_val = ((int32_t)U32_AT(&p_tmp[ 22 ])) % 1024;
+
+    return( i_val < 0 ? i_val * -1 : i_val );
+}
+
+static void acei_init( uint32_t *p_acei, uint32_t *p_sys_key )
+{
+    uint32_t i;
+
+    for( i = 0; i < 4; i++ )
+    {
+        p_acei[ i ] = U32_AT(&p_sys_key[ i ]);
+    }
+
+    p_acei[ 4 ] = 0x5476212A;
+
+    for( i = 5; i < 25; i++ )
+    {
+        p_acei[ i ] = ttov_calc( p_acei );
+    }
+
+    p_acei[ 25 + 0 ] = p_acei[ 0 ];
+    p_acei[ 25 + 1 ] = 0x68723876;
+    p_acei[ 25 + 2 ] = 0x41617376;
+    p_acei[ 25 + 3 ] = 0x4D4B4F76;
+
+    p_acei[ 25 + 4 ] = p_acei[ 1 ];
+    p_acei[ 25 + 5 ] = 0x48556646;
+    p_acei[ 25 + 6 ] = 0x38393725;
+    p_acei[ 25 + 7 ] = 0x2E3B5B3D;
+
+    p_acei[ 25 + 8 ] = p_acei[ 2 ];
+    p_acei[ 25 + 9 ] = 0x37363866;
+    p_acei[ 25 + 10 ] = 0x30383637;
+    p_acei[ 25 + 11 ] = 0x34333661;
+
+    p_acei[ 25 + 12 ] = p_acei[ 3 ];
+    p_acei[ 25 + 13 ] = 0x37386162;
+    p_acei[ 25 + 14 ] = 0x494F6E66;
+    p_acei[ 25 + 15 ] = 0x2A282966;
+}
+
+static __inline void block_xor( uint32_t *p_in, uint32_t *p_key,
+                              uint32_t *p_out )
+{
+    uint32_t i;
+
+    for( i = 0; i < 4; i++ )
+    {
+        p_out[ i ] = p_key[ i ] ^ p_in[ i ];
+    }
+}
+
+int drms_get_sys_key( uint32_t *p_sys_key )
+{
+    uint32_t p_tmp[ 128 ];
+    uint32_t p_tmp_key[ 4 ];
+
+    TAOS_INIT( p_tmp, 8 );
+    if( taos_osi( p_tmp ) )
+    {
+        return( -1 );
+    }
+    taos_end1( p_tmp, p_tmp_key );
+
+    TAOS_INIT( p_tmp, 2 );
+    taos_add2( p_tmp, "YuaFlafu", 8 );
+    taos_add2( p_tmp, (uint8_t *)p_tmp_key, 6 );
+    taos_add2( p_tmp, (uint8_t *)p_tmp_key, 6 );
+    taos_add2( p_tmp, (uint8_t *)p_tmp_key, 6 );
+    taos_add2( p_tmp, "zPif98ga", 8 );
+    taos_end2( p_tmp );
+
+    memcpy( p_sys_key, &p_tmp[ 2 ], sizeof(*p_sys_key) * 4 );
+
+    return( 0 );
+}
+
+int drms_get_user_key( uint32_t *p_sys_key, uint32_t *p_user_key )
+{
+    uint32_t i;
+    uint32_t p_tmp[ 4 ];
+    uint32_t *p_cur_key;
+    uint32_t p_acei[ 41 ];
+    uint32_t p_ctx[ 128 ];
+    uint32_t p_sci[ 2 ][ 11 ][ 4 ];
+
+    uint32_t p_sci_key[ 4 ] =
+    {
+        0x6E66556D, 0x6E676F70, 0x67666461, 0x33373866
+    };
+
+    if( p_sys_key == NULL )
+    {
+        if( drms_get_sys_key( p_tmp ) )
+        {
+            return( -1 );
+        }
+
+        p_sys_key = p_tmp;
+    }
+
+    if( get_sci_data( p_sci[ 0 ] ) )
+    {
+        return( -1 );
+    }
+
+    init_ctx( p_ctx, p_sys_key );
+
+    for( i = 0, p_cur_key = p_sci_key;
+         i < sizeof(p_sci[ 0 ])/sizeof(p_sci[ 0 ][ 0 ]); i++ )
+    {
+        ctx_xor( p_ctx, &p_sci[ 0 ][ i ][ 0 ], &p_sci[ 1 ][ i ][ 0 ],
+                 p_drms_tab3, p_drms_tab4 );
+        block_xor( &p_sci[ 1 ][ i ][ 0 ], p_cur_key, &p_sci[ 1 ][ i ][ 0 ] );
+
+        p_cur_key = &p_sci[ 0 ][ i ][ 0 ];
+    }
+
+    acei_init( p_acei, p_sys_key );
+
+    for( i = 0; i < sizeof(p_sci[ 1 ])/sizeof(p_sci[ 1 ][ 0 ]); i++ )
+    {
+        acei( p_acei, (uint8_t *)&p_sci[ 1 ][ i ][ 0 ],
+              sizeof(p_sci[ 1 ][ i ]) );
+    }
+
+    memcpy( p_user_key, &p_sci[ 1 ][ 10 ][ 0 ], sizeof(p_sci[ 1 ][ i ]) );
+
+    return( 0 );
+}
+
+struct drms_s
+{
+    uint8_t *p_iviv;
+    uint32_t i_iviv_len;
+    uint8_t *p_name;
+    uint32_t i_name_len;
+
+    uint32_t *p_tmp;
+    uint32_t i_tmp_len;
+
+    uint32_t p_key[ 4 ];
+    uint32_t p_ctx[ 128 ];
+};
+
+#define P_DRMS ((struct drms_s *)p_drms)
+
+void *drms_alloc()
+{
+    struct drms_s *p_drms;
+
+    p_drms = malloc( sizeof(struct drms_s) );
+
+    if( p_drms != NULL )
+    {
+        memset( p_drms, 0, sizeof(struct drms_s) );
+
+        p_drms->i_tmp_len = 1024;
+        p_drms->p_tmp = malloc( p_drms->i_tmp_len );
+        if( p_drms->p_tmp == NULL )
+        {
+            free( (void *)p_drms );
+            p_drms = NULL;
+        }
+    }
+
+    return( (void *)p_drms );
+}
+
+void drms_free( void *p_drms )
+{
+    if( P_DRMS->p_name != NULL )
+    {
+        free( (void *)P_DRMS->p_name );
+    }
+
+    if( P_DRMS->p_iviv != NULL )
+    {
+        free( (void *)P_DRMS->p_iviv );
+    }
+
+    if( P_DRMS->p_tmp != NULL )
+    {
+        free( (void *)P_DRMS->p_tmp );
+    }
+
+    free( p_drms );
+}
+
+void drms_decrypt( void *p_drms, uint32_t *p_buffer, uint32_t i_len )
+{
+    uint32_t i, x, y;
+    uint32_t *p_cur_key = P_DRMS->p_key;
+
+    x = (i_len / sizeof(P_DRMS->p_key)) * sizeof(P_DRMS->p_key);
+
+    if( P_DRMS->i_tmp_len < x )
+    {
+        free( (void *)P_DRMS->p_tmp );
+
+        P_DRMS->i_tmp_len = x;
+        P_DRMS->p_tmp = malloc( P_DRMS->i_tmp_len );
+    }
+
+    if( P_DRMS->p_tmp != NULL )
+    {
+        memcpy( P_DRMS->p_tmp, p_buffer, x );
+
+        for( i = 0, x /= sizeof(P_DRMS->p_key); i < x; i++ )
+        {
+            y = i * sizeof(*p_buffer);
+
+            ctx_xor( P_DRMS->p_ctx, P_DRMS->p_tmp + y, p_buffer + y,
+                     p_drms_tab3, p_drms_tab4 );
+            block_xor( p_buffer + y, p_cur_key, p_buffer + y );
+
+            p_cur_key = P_DRMS->p_tmp + y;
+        }
+    }
+}
+
+int drms_init( void *p_drms, uint32_t i_type,
+               uint8_t *p_info, uint32_t i_len )
+{
+    int i_ret = 0;
+
+    switch( i_type )
+    {
+        case DRMS_INIT_UKEY:
+        {
+            if( i_len != sizeof(P_DRMS->p_key) )
+            {
+                i_ret = -1;
+                break;
+            }
+
+            init_ctx( P_DRMS->p_ctx, (uint32_t *)p_info );
+        }
+        break;
+
+        case DRMS_INIT_IVIV:
+        {
+            if( i_len != sizeof(P_DRMS->p_key) )
+            {
+                i_ret = -1;
+                break;
+            }
+
+            P_DRMS->p_iviv = malloc( i_len );
+            if( P_DRMS->p_iviv == NULL )
+            {
+                i_ret = -1;
+                break;
+            }
+
+            memcpy( P_DRMS->p_iviv, p_info, i_len );
+            P_DRMS->i_iviv_len = i_len;
+        }
+        break;
+
+        case DRMS_INIT_NAME:
+        {
+            P_DRMS->p_name = malloc( i_len );
+            if( P_DRMS->p_name == NULL )
+            {
+                i_ret = -1;
+                break;
+            }
+
+            memcpy( P_DRMS->p_name, p_info, i_len );
+            P_DRMS->i_name_len = i_len;
+        }
+        break;
+
+        case DRMS_INIT_PRIV:
+        {
+            uint32_t i;
+            uint32_t p_priv[ 64 ];
+            uint32_t p_tmp[ 128 ];
+
+            if( i_len < 64 )
+            {
+                i_ret = -1;
+                break;
+            }
+
+            TAOS_INIT( p_tmp, 0 );
+            taos_add3( p_tmp, P_DRMS->p_name, P_DRMS->i_name_len );
+            taos_add3( p_tmp, P_DRMS->p_iviv, P_DRMS->i_iviv_len );
+            memcpy( p_priv, &p_tmp[ 4 ], sizeof(p_priv[ 0 ]) * 2 );
+            i = (p_tmp[ 4 ] / 8) & 63;
+            i = i >= 56 ? 120 - i : 56 - i;
+            taos_add3( p_tmp, p_drms_tab_tend, i );
+            taos_add3( p_tmp, (uint8_t *)p_priv, sizeof(p_priv[ 0 ]) * 2 );
+
+            memcpy( p_priv, p_info, 64 );
+            memcpy( P_DRMS->p_key, p_tmp, sizeof(P_DRMS->p_key) );
+            drms_decrypt( p_drms, p_priv, sizeof(p_priv) );
+
+            init_ctx( P_DRMS->p_ctx, &p_priv[ 6 ] );
+            memcpy( P_DRMS->p_key, &p_priv[ 12 ], sizeof(P_DRMS->p_key) );
+
+            free( (void *)P_DRMS->p_name );
+            P_DRMS->p_name = NULL;
+            free( (void *)P_DRMS->p_iviv );
+            P_DRMS->p_iviv = NULL;
+        }
+        break;
+    }
+
+    return( i_ret );
+}
+
+#undef P_DRMS
+
+#endif
+
diff --git a/src/mp4ff/drms.h b/src/mp4ff/drms.h
new file mode 100644
index 000000000..42d957400
--- /dev/null
+++ b/src/mp4ff/drms.h
@@ -0,0 +1,40 @@
+/*****************************************************************************
+ * drms.h : DRMS
+ *****************************************************************************
+ * Copyright (C) 2004 VideoLAN
+ * $Id: drms.h,v 1.3 2004/01/11 15:52:18 menno Exp $
+ *
+ * Author: Jon Lech Johansen <jon-vl@nanocrew.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ *****************************************************************************/
+
+
+#define DRMS_INIT_UKEY  0
+#define DRMS_INIT_IVIV  1
+#define DRMS_INIT_NAME  2
+#define DRMS_INIT_PRIV  3
+
+extern int drms_get_sys_key( uint32_t *p_sys_key );
+extern int drms_get_user_key( uint32_t *p_sys_key,
+                              uint32_t *p_user_key );
+
+extern void *drms_alloc();
+extern void drms_free( void *p_drms );
+extern int drms_init( void *p_drms, uint32_t i_type,
+                      uint8_t *p_info, uint32_t i_len );
+extern void drms_decrypt( void *p_drms, uint32_t *p_buffer,
+                          uint32_t i_len );
+
diff --git a/src/mp4ff/drmstables.h b/src/mp4ff/drmstables.h
new file mode 100644
index 000000000..e38c1f762
--- /dev/null
+++ b/src/mp4ff/drmstables.h
@@ -0,0 +1,449 @@
+/*****************************************************************************
+ * drmstables.h : DRMS tables
+ *****************************************************************************
+ * Copyright (C) 2004 VideoLAN
+ * $Id: drmstables.h,v 1.2 2004/01/11 15:52:18 menno Exp $
+ *
+ * Author: Jon Lech Johansen <jon-vl@nanocrew.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ *****************************************************************************/
+
+
+static uint32_t p_drms_tab1[ 10 ] =
+{
+    0x00000001, 0x00000002, 0x00000004, 0x00000008, 0x00000010, 0x00000020,
+    0x00000040, 0x00000080, 0x0000001B, 0x00000036
+};
+
+static uint32_t p_drms_tab2[ 256 ] =
+{
+    0x63000000, 0x7C000000, 0x77000000, 0x7B000000, 0xF2000000, 0x6B000000,
+    0x6F000000, 0xC5000000, 0x30000000, 0x01000000, 0x67000000, 0x2B000000,
+    0xFE000000, 0xD7000000, 0xAB000000, 0x76000000, 0xCA000000, 0x82000000,
+    0xC9000000, 0x7D000000, 0xFA000000, 0x59000000, 0x47000000, 0xF0000000,
+    0xAD000000, 0xD4000000, 0xA2000000, 0xAF000000, 0x9C000000, 0xA4000000,
+    0x72000000, 0xC0000000, 0xB7000000, 0xFD000000, 0x93000000, 0x26000000,
+    0x36000000, 0x3F000000, 0xF7000000, 0xCC000000, 0x34000000, 0xA5000000,
+    0xE5000000, 0xF1000000, 0x71000000, 0xD8000000, 0x31000000, 0x15000000,
+    0x04000000, 0xC7000000, 0x23000000, 0xC3000000, 0x18000000, 0x96000000,
+    0x05000000, 0x9A000000, 0x07000000, 0x12000000, 0x80000000, 0xE2000000,
+    0xEB000000, 0x27000000, 0xB2000000, 0x75000000, 0x09000000, 0x83000000,
+    0x2C000000, 0x1A000000, 0x1B000000, 0x6E000000, 0x5A000000, 0xA0000000,
+    0x52000000, 0x3B000000, 0xD6000000, 0xB3000000, 0x29000000, 0xE3000000,
+    0x2F000000, 0x84000000, 0x53000000, 0xD1000000, 0x00000000, 0xED000000,
+    0x20000000, 0xFC000000, 0xB1000000, 0x5B000000, 0x6A000000, 0xCB000000,
+    0xBE000000, 0x39000000, 0x4A000000, 0x4C000000, 0x58000000, 0xCF000000,
+    0xD0000000, 0xEF000000, 0xAA000000, 0xFB000000, 0x43000000, 0x4D000000,
+    0x33000000, 0x85000000, 0x45000000, 0xF9000000, 0x02000000, 0x7F000000,
+    0x50000000, 0x3C000000, 0x9F000000, 0xA8000000, 0x51000000, 0xA3000000,
+    0x40000000, 0x8F000000, 0x92000000, 0x9D000000, 0x38000000, 0xF5000000,
+    0xBC000000, 0xB6000000, 0xDA000000, 0x21000000, 0x10000000, 0xFF000000,
+    0xF3000000, 0xD2000000, 0xCD000000, 0x0C000000, 0x13000000, 0xEC000000,
+    0x5F000000, 0x97000000, 0x44000000, 0x17000000, 0xC4000000, 0xA7000000,
+    0x7E000000, 0x3D000000, 0x64000000, 0x5D000000, 0x19000000, 0x73000000,
+    0x60000000, 0x81000000, 0x4F000000, 0xDC000000, 0x22000000, 0x2A000000,
+    0x90000000, 0x88000000, 0x46000000, 0xEE000000, 0xB8000000, 0x14000000,
+    0xDE000000, 0x5E000000, 0x0B000000, 0xDB000000, 0xE0000000, 0x32000000,
+    0x3A000000, 0x0A000000, 0x49000000, 0x06000000, 0x24000000, 0x5C000000,
+    0xC2000000, 0xD3000000, 0xAC000000, 0x62000000, 0x91000000, 0x95000000,
+    0xE4000000, 0x79000000, 0xE7000000, 0xC8000000, 0x37000000, 0x6D000000,
+    0x8D000000, 0xD5000000, 0x4E000000, 0xA9000000, 0x6C000000, 0x56000000,
+    0xF4000000, 0xEA000000, 0x65000000, 0x7A000000, 0xAE000000, 0x08000000,
+    0xBA000000, 0x78000000, 0x25000000, 0x2E000000, 0x1C000000, 0xA6000000,
+    0xB4000000, 0xC6000000, 0xE8000000, 0xDD000000, 0x74000000, 0x1F000000,
+    0x4B000000, 0xBD000000, 0x8B000000, 0x8A000000, 0x70000000, 0x3E000000,
+    0xB5000000, 0x66000000, 0x48000000, 0x03000000, 0xF6000000, 0x0E000000,
+    0x61000000, 0x35000000, 0x57000000, 0xB9000000, 0x86000000, 0xC1000000,
+    0x1D000000, 0x9E000000, 0xE1000000, 0xF8000000, 0x98000000, 0x11000000,
+    0x69000000, 0xD9000000, 0x8E000000, 0x94000000, 0x9B000000, 0x1E000000,
+    0x87000000, 0xE9000000, 0xCE000000, 0x55000000, 0x28000000, 0xDF000000,
+    0x8C000000, 0xA1000000, 0x89000000, 0x0D000000, 0xBF000000, 0xE6000000,
+    0x42000000, 0x68000000, 0x41000000, 0x99000000, 0x2D000000, 0x0F000000,
+    0xB0000000, 0x54000000, 0xBB000000, 0x16000000
+};
+
+static uint32_t p_drms_tab3[ 256 ] =
+{
+    0x5150A7F4, 0x7E536541, 0x1AC3A417, 0x3A965E27, 0x3BCB6BAB, 0x1FF1459D,
+    0xACAB58FA, 0x4B9303E3, 0x2055FA30, 0xADF66D76, 0x889176CC, 0xF5254C02,
+    0x4FFCD7E5, 0xC5D7CB2A, 0x26804435, 0xB58FA362, 0xDE495AB1, 0x25671BBA,
+    0x45980EEA, 0x5DE1C0FE, 0xC302752F, 0x8112F04C, 0x8DA39746, 0x6BC6F9D3,
+    0x03E75F8F, 0x15959C92, 0xBFEB7A6D, 0x95DA5952, 0xD42D83BE, 0x58D32174,
+    0x492969E0, 0x8E44C8C9, 0x756A89C2, 0xF478798E, 0x996B3E58, 0x27DD71B9,
+    0xBEB64FE1, 0xF017AD88, 0xC966AC20, 0x7DB43ACE, 0x63184ADF, 0xE582311A,
+    0x97603351, 0x62457F53, 0xB1E07764, 0xBB84AE6B, 0xFE1CA081, 0xF9942B08,
+    0x70586848, 0x8F19FD45, 0x94876CDE, 0x52B7F87B, 0xAB23D373, 0x72E2024B,
+    0xE3578F1F, 0x662AAB55, 0xB20728EB, 0x2F03C2B5, 0x869A7BC5, 0xD3A50837,
+    0x30F28728, 0x23B2A5BF, 0x02BA6A03, 0xED5C8216, 0x8A2B1CCF, 0xA792B479,
+    0xF3F0F207, 0x4EA1E269, 0x65CDF4DA, 0x06D5BE05, 0xD11F6234, 0xC48AFEA6,
+    0x349D532E, 0xA2A055F3, 0x0532E18A, 0xA475EBF6, 0x0B39EC83, 0x40AAEF60,
+    0x5E069F71, 0xBD51106E, 0x3EF98A21, 0x963D06DD, 0xDDAE053E, 0x4D46BDE6,
+    0x91B58D54, 0x71055DC4, 0x046FD406, 0x60FF1550, 0x1924FB98, 0xD697E9BD,
+    0x89CC4340, 0x67779ED9, 0xB0BD42E8, 0x07888B89, 0xE7385B19, 0x79DBEEC8,
+    0xA1470A7C, 0x7CE90F42, 0xF8C91E84, 0x00000000, 0x09838680, 0x3248ED2B,
+    0x1EAC7011, 0x6C4E725A, 0xFDFBFF0E, 0x0F563885, 0x3D1ED5AE, 0x3627392D,
+    0x0A64D90F, 0x6821A65C, 0x9BD1545B, 0x243A2E36, 0x0CB1670A, 0x930FE757,
+    0xB4D296EE, 0x1B9E919B, 0x804FC5C0, 0x61A220DC, 0x5A694B77, 0x1C161A12,
+    0xE20ABA93, 0xC0E52AA0, 0x3C43E022, 0x121D171B, 0x0E0B0D09, 0xF2ADC78B,
+    0x2DB9A8B6, 0x14C8A91E, 0x578519F1, 0xAF4C0775, 0xEEBBDD99, 0xA3FD607F,
+    0xF79F2601, 0x5CBCF572, 0x44C53B66, 0x5B347EFB, 0x8B762943, 0xCBDCC623,
+    0xB668FCED, 0xB863F1E4, 0xD7CADC31, 0x42108563, 0x13402297, 0x842011C6,
+    0x857D244A, 0xD2F83DBB, 0xAE1132F9, 0xC76DA129, 0x1D4B2F9E, 0xDCF330B2,
+    0x0DEC5286, 0x77D0E3C1, 0x2B6C16B3, 0xA999B970, 0x11FA4894, 0x472264E9,
+    0xA8C48CFC, 0xA01A3FF0, 0x56D82C7D, 0x22EF9033, 0x87C74E49, 0xD9C1D138,
+    0x8CFEA2CA, 0x98360BD4, 0xA6CF81F5, 0xA528DE7A, 0xDA268EB7, 0x3FA4BFAD,
+    0x2CE49D3A, 0x500D9278, 0x6A9BCC5F, 0x5462467E, 0xF6C2138D, 0x90E8B8D8,
+    0x2E5EF739, 0x82F5AFC3, 0x9FBE805D, 0x697C93D0, 0x6FA92DD5, 0xCFB31225,
+    0xC83B99AC, 0x10A77D18, 0xE86E639C, 0xDB7BBB3B, 0xCD097826, 0x6EF41859,
+    0xEC01B79A, 0x83A89A4F, 0xE6656E95, 0xAA7EE6FF, 0x2108CFBC, 0xEFE6E815,
+    0xBAD99BE7, 0x4ACE366F, 0xEAD4099F, 0x29D67CB0, 0x31AFB2A4, 0x2A31233F,
+    0xC63094A5, 0x35C066A2, 0x7437BC4E, 0xFCA6CA82, 0xE0B0D090, 0x3315D8A7,
+    0xF14A9804, 0x41F7DAEC, 0x7F0E50CD, 0x172FF691, 0x768DD64D, 0x434DB0EF,
+    0xCC544DAA, 0xE4DF0496, 0x9EE3B5D1, 0x4C1B886A, 0xC1B81F2C, 0x467F5165,
+    0x9D04EA5E, 0x015D358C, 0xFA737487, 0xFB2E410B, 0xB35A1D67, 0x9252D2DB,
+    0xE9335610, 0x6D1347D6, 0x9A8C61D7, 0x377A0CA1, 0x598E14F8, 0xEB893C13,
+    0xCEEE27A9, 0xB735C961, 0xE1EDE51C, 0x7A3CB147, 0x9C59DFD2, 0x553F73F2,
+    0x1879CE14, 0x73BF37C7, 0x53EACDF7, 0x5F5BAAFD, 0xDF146F3D, 0x7886DB44,
+    0xCA81F3AF, 0xB93EC468, 0x382C3424, 0xC25F40A3, 0x1672C31D, 0xBC0C25E2,
+    0x288B493C, 0xFF41950D, 0x397101A8, 0x08DEB30C, 0xD89CE4B4, 0x6490C156,
+    0x7B6184CB, 0xD570B632, 0x48745C6C, 0xD04257B8
+};
+
+static uint32_t p_drms_tab4[ 256 ] =
+{
+    0x52000000, 0x09000000, 0x6A000000, 0xD5000000, 0x30000000, 0x36000000,
+    0xA5000000, 0x38000000, 0xBF000000, 0x40000000, 0xA3000000, 0x9E000000,
+    0x81000000, 0xF3000000, 0xD7000000, 0xFB000000, 0x7C000000, 0xE3000000,
+    0x39000000, 0x82000000, 0x9B000000, 0x2F000000, 0xFF000000, 0x87000000,
+    0x34000000, 0x8E000000, 0x43000000, 0x44000000, 0xC4000000, 0xDE000000,
+    0xE9000000, 0xCB000000, 0x54000000, 0x7B000000, 0x94000000, 0x32000000,
+    0xA6000000, 0xC2000000, 0x23000000, 0x3D000000, 0xEE000000, 0x4C000000,
+    0x95000000, 0x0B000000, 0x42000000, 0xFA000000, 0xC3000000, 0x4E000000,
+    0x08000000, 0x2E000000, 0xA1000000, 0x66000000, 0x28000000, 0xD9000000,
+    0x24000000, 0xB2000000, 0x76000000, 0x5B000000, 0xA2000000, 0x49000000,
+    0x6D000000, 0x8B000000, 0xD1000000, 0x25000000, 0x72000000, 0xF8000000,
+    0xF6000000, 0x64000000, 0x86000000, 0x68000000, 0x98000000, 0x16000000,
+    0xD4000000, 0xA4000000, 0x5C000000, 0xCC000000, 0x5D000000, 0x65000000,
+    0xB6000000, 0x92000000, 0x6C000000, 0x70000000, 0x48000000, 0x50000000,
+    0xFD000000, 0xED000000, 0xB9000000, 0xDA000000, 0x5E000000, 0x15000000,
+    0x46000000, 0x57000000, 0xA7000000, 0x8D000000, 0x9D000000, 0x84000000,
+    0x90000000, 0xD8000000, 0xAB000000, 0x00000000, 0x8C000000, 0xBC000000,
+    0xD3000000, 0x0A000000, 0xF7000000, 0xE4000000, 0x58000000, 0x05000000,
+    0xB8000000, 0xB3000000, 0x45000000, 0x06000000, 0xD0000000, 0x2C000000,
+    0x1E000000, 0x8F000000, 0xCA000000, 0x3F000000, 0x0F000000, 0x02000000,
+    0xC1000000, 0xAF000000, 0xBD000000, 0x03000000, 0x01000000, 0x13000000,
+    0x8A000000, 0x6B000000, 0x3A000000, 0x91000000, 0x11000000, 0x41000000,
+    0x4F000000, 0x67000000, 0xDC000000, 0xEA000000, 0x97000000, 0xF2000000,
+    0xCF000000, 0xCE000000, 0xF0000000, 0xB4000000, 0xE6000000, 0x73000000,
+    0x96000000, 0xAC000000, 0x74000000, 0x22000000, 0xE7000000, 0xAD000000,
+    0x35000000, 0x85000000, 0xE2000000, 0xF9000000, 0x37000000, 0xE8000000,
+    0x1C000000, 0x75000000, 0xDF000000, 0x6E000000, 0x47000000, 0xF1000000,
+    0x1A000000, 0x71000000, 0x1D000000, 0x29000000, 0xC5000000, 0x89000000,
+    0x6F000000, 0xB7000000, 0x62000000, 0x0E000000, 0xAA000000, 0x18000000,
+    0xBE000000, 0x1B000000, 0xFC000000, 0x56000000, 0x3E000000, 0x4B000000,
+    0xC6000000, 0xD2000000, 0x79000000, 0x20000000, 0x9A000000, 0xDB000000,
+    0xC0000000, 0xFE000000, 0x78000000, 0xCD000000, 0x5A000000, 0xF4000000,
+    0x1F000000, 0xDD000000, 0xA8000000, 0x33000000, 0x88000000, 0x07000000,
+    0xC7000000, 0x31000000, 0xB1000000, 0x12000000, 0x10000000, 0x59000000,
+    0x27000000, 0x80000000, 0xEC000000, 0x5F000000, 0x60000000, 0x51000000,
+    0x7F000000, 0xA9000000, 0x19000000, 0xB5000000, 0x4A000000, 0x0D000000,
+    0x2D000000, 0xE5000000, 0x7A000000, 0x9F000000, 0x93000000, 0xC9000000,
+    0x9C000000, 0xEF000000, 0xA0000000, 0xE0000000, 0x3B000000, 0x4D000000,
+    0xAE000000, 0x2A000000, 0xF5000000, 0xB0000000, 0xC8000000, 0xEB000000,
+    0xBB000000, 0x3C000000, 0x83000000, 0x53000000, 0x99000000, 0x61000000,
+    0x17000000, 0x2B000000, 0x04000000, 0x7E000000, 0xBA000000, 0x77000000,
+    0xD6000000, 0x26000000, 0xE1000000, 0x69000000, 0x14000000, 0x63000000,
+    0x55000000, 0x21000000, 0x0C000000, 0x7D000000
+};
+
+static int32_t p_drms_tab_taos[ 64 ] =
+{
+    -0x28955B88, -0x173848AA, +0x242070DB, -0x3E423112, -0x0A83F051,
+    +0x4787C62A, -0x57CFB9ED, -0x02B96AFF, +0x698098D8, -0x74BB0851,
+    -0x0000A44F, -0x76A32842, +0x6B901122, -0x02678E6D, -0x5986BC72,
+    +0x49B40821, -0x09E1DA9E, -0x3FBF4CC0, +0x265E5A51, -0x16493856,
+    -0x29D0EFA3, +0x02441453, -0x275E197F, -0x182C0438, +0x21E1CDE6,
+    -0x3CC8F82A, -0x0B2AF279, +0x455A14ED, -0x561C16FB, -0x03105C08,
+    +0x676F02D9, -0x72D5B376, -0x0005C6BE, -0x788E097F, +0x6D9D6122,
+    -0x021AC7F4, -0x5B4115BC, +0x4BDECFA9, -0x0944B4A0, -0x41404390,
+    +0x289B7EC6, -0x155ED806, -0x2B10CF7B, +0x04881D05, -0x262B2FC7,
+    -0x1924661B, +0x1FA27CF8, -0x3B53A99B, -0x0BD6DDBC, +0x432AFF97,
+    -0x546BDC59, -0x036C5FC7, +0x655B59C3, -0x70F3336E, -0x00100B83,
+    -0x7A7BA22F, +0x6FA87E4F, -0x01D31920, -0x5CFEBCEC, +0x4E0811A1,
+    -0x08AC817E, -0x42C50DCB, +0x2AD7D2BB, -0x14792C6F
+};
+
+static uint8_t p_drms_tab_tend[ 64 ] =
+{
+    0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static uint16_t p_drms_tab_xor[ 16 ][ 16 ] =
+{
+    {
+        0x00D1, 0x0315, 0x1A32, 0x19EC, 0x1BBB, 0x1D6F, 0x14FE, 0x0E9E,
+        0x029E, 0x1B8F, 0x0B70, 0x033A, 0x188E, 0x1D18, 0x0BD8, 0x0EDB
+    },
+
+    {
+        0x0C64, 0x1C2B, 0x149C, 0x047B, 0x1064, 0x1C7C, 0x118D, 0x1355,
+        0x0AE5, 0x0F18, 0x016F, 0x17D6, 0x1595, 0x0084, 0x0616, 0x1CCD
+    },
+
+    {
+        0x1D94, 0x0618, 0x182C, 0x195B, 0x196D, 0x0394, 0x07DB, 0x0287,
+        0x1636, 0x0B81, 0x1519, 0x0DF9, 0x1BA3, 0x1CC3, 0x0EE2, 0x1434
+    },
+
+    {
+        0x1457, 0x0CED, 0x0F7D, 0x0D7B, 0x0B9E, 0x0D13, 0x13D7, 0x18D0,
+        0x1259, 0x1977, 0x0606, 0x1E80, 0x05F2, 0x06B8, 0x1F07, 0x1365
+    },
+
+    {
+        0x0334, 0x0E30, 0x195F, 0x15F1, 0x058E, 0x0AA8, 0x045A, 0x0465,
+        0x0B3E, 0x071E, 0x0A36, 0x105C, 0x01AC, 0x1A1E, 0x04E4, 0x056B
+    },
+
+    {
+        0x12BF, 0x0DA2, 0x0B41, 0x0EAF, 0x034F, 0x0181, 0x04E2, 0x002B,
+        0x12E6, 0x01BE, 0x10E8, 0x128F, 0x0EB2, 0x1369, 0x05BE, 0x1A59
+    },
+
+    {
+        0x117E, 0x047C, 0x1E86, 0x056A, 0x0DA7, 0x0D61, 0x03FC, 0x1E6E,
+        0x1D0C, 0x1E6D, 0x14BF, 0x0C50, 0x063A, 0x1B47, 0x17AE, 0x1321
+    },
+
+    {
+        0x041B, 0x0A24, 0x0D4D, 0x1F2B, 0x1CB6, 0x1BED, 0x1549, 0x03A7,
+        0x0254, 0x006C, 0x0C9E, 0x0F73, 0x006C, 0x0008, 0x11F9, 0x0DD5
+    },
+
+    {
+        0x0BCF, 0x0AF9, 0x1DFE, 0x0341, 0x0E49, 0x0D38, 0x17CB, 0x1513,
+        0x0E96, 0x00ED, 0x0556, 0x1B28, 0x100C, 0x19D8, 0x14FA, 0x028C
+    },
+
+    {
+        0x1C60, 0x1232, 0x13D3, 0x0D00, 0x1534, 0x192C, 0x14B5, 0x1CF2,
+        0x0504, 0x0B5B, 0x1ECF, 0x0423, 0x183B, 0x06B0, 0x169E, 0x1066
+    },
+
+    {
+        0x04CB, 0x08A2, 0x1B4A, 0x1254, 0x198D, 0x1044, 0x0236, 0x1BD8,
+        0x18A1, 0x03FF, 0x1A0D, 0x0277, 0x0C2D, 0x17C9, 0x007C, 0x116E
+    },
+
+    {
+        0x048A, 0x1EAF, 0x0922, 0x0C45, 0x0766, 0x1E5F, 0x1A28, 0x0120,
+        0x1C15, 0x034C, 0x0508, 0x0E73, 0x0879, 0x0441, 0x09AE, 0x132F
+    },
+
+    {
+        0x14FE, 0x0413, 0x0A9D, 0x1727, 0x01D7, 0x1A2B, 0x0474, 0x18F0,
+        0x1F3B, 0x14F5, 0x1071, 0x0895, 0x1071, 0x18FF, 0x18E3, 0x0EB9
+    },
+
+    {
+        0x0BA9, 0x0961, 0x1599, 0x019E, 0x1D12, 0x1BAA, 0x1E94, 0x1921,
+        0x14DC, 0x124E, 0x0A25, 0x03AB, 0x1CC0, 0x1EBB, 0x0B4B, 0x16E5
+    },
+
+    {
+        0x11EA, 0x0D78, 0x1BB3, 0x1BA7, 0x1510, 0x1B7B, 0x0C64, 0x1995,
+        0x1A58, 0x1651, 0x1964, 0x147A, 0x15F2, 0x11BB, 0x1654, 0x166E
+    },
+
+    {
+        0x0EA9, 0x1DE1, 0x1443, 0x13C5, 0x00E1, 0x0B2F, 0x0B6F, 0x0A37,
+        0x18AC, 0x08E6, 0x06F0, 0x136E, 0x0853, 0x0B2E, 0x0813, 0x10D6
+    }
+};
+
+static uint16_t p_drms_tab_sub[ 16 ][ 16 ] =
+{
+    {
+        0x067A, 0x0C7D, 0x0B4F, 0x127D, 0x0BD6, 0x04AC, 0x16E0, 0x1730,
+        0x0587, 0x0AFB, 0x1AC3, 0x0120, 0x14B5, 0x0F67, 0x11DE, 0x0961
+    },
+
+    {
+        0x1127, 0x1A68, 0x07F0, 0x17D0, 0x1A6F, 0x1F3B, 0x01EF, 0x0919,
+        0x131E, 0x0F90, 0x19E9, 0x18A8, 0x0CB2, 0x1AD0, 0x0C66, 0x0378
+    },
+
+    {
+        0x03B0, 0x01BE, 0x1866, 0x1159, 0x197C, 0x1105, 0x010B, 0x0353,
+        0x1ABB, 0x09A6, 0x028A, 0x1BAD, 0x1B20, 0x0455, 0x0F57, 0x0588
+    },
+
+    {
+        0x1491, 0x0A1D, 0x0F04, 0x0650, 0x191E, 0x1E0E, 0x174B, 0x016B,
+        0x051F, 0x0532, 0x00DF, 0x1AEA, 0x0005, 0x0E1B, 0x0FF6, 0x08D8
+    },
+
+    {
+        0x14B4, 0x086A, 0x0C20, 0x0149, 0x1971, 0x0F26, 0x1852, 0x017D,
+        0x1228, 0x0352, 0x0A44, 0x1330, 0x18DF, 0x1E38, 0x01BC, 0x0BAC
+    },
+
+    {
+        0x1A48, 0x021F, 0x02F7, 0x0C31, 0x0BC4, 0x1E75, 0x105C, 0x13E3,
+        0x0B20, 0x03A1, 0x1AF3, 0x1A36, 0x0E34, 0x181F, 0x09BD, 0x122B
+    },
+
+    {
+        0x0EE0, 0x163B, 0x0BE7, 0x103D, 0x1075, 0x1E9D, 0x02AF, 0x0BA2,
+        0x1DAA, 0x0CF1, 0x04B6, 0x0598, 0x06A1, 0x0D33, 0x1CFE, 0x04EE
+    },
+
+    {
+        0x1BAD, 0x07C8, 0x1A48, 0x05E6, 0x031F, 0x0E0A, 0x0326, 0x1650,
+        0x0526, 0x0B4E, 0x08FC, 0x0E4D, 0x0832, 0x06EA, 0x09BF, 0x0993
+    },
+
+    {
+        0x09EB, 0x0F31, 0x071B, 0x14D5, 0x11CA, 0x0722, 0x120D, 0x014C,
+        0x1993, 0x0AE4, 0x1CCB, 0x04E9, 0x0AEE, 0x1708, 0x0C3D, 0x12F2
+    },
+
+    {
+        0x1A19, 0x07C1, 0x05A7, 0x0744, 0x1606, 0x1A9B, 0x042D, 0x1BFC,
+        0x1841, 0x0C3C, 0x0FFE, 0x1AB1, 0x1416, 0x18A9, 0x0320, 0x1EC2
+    },
+
+    {
+        0x0AE7, 0x11C6, 0x124A, 0x11DF, 0x0F81, 0x06CF, 0x0ED9, 0x0253,
+        0x1D2B, 0x0349, 0x0805, 0x08B3, 0x1052, 0x12CF, 0x0A44, 0x0EA6
+    },
+
+    {
+        0x03BF, 0x1D90, 0x0EF8, 0x0657, 0x156D, 0x0405, 0x10BE, 0x091F,
+        0x1C82, 0x1725, 0x19EF, 0x0B8C, 0x04D9, 0x02C7, 0x025A, 0x1B89
+    },
+
+    {
+        0x0F5C, 0x013D, 0x02F7, 0x12E3, 0x0BC5, 0x1B56, 0x0848, 0x0239,
+        0x0FCF, 0x03A4, 0x092D, 0x1354, 0x1D83, 0x01BD, 0x071A, 0x0AF1
+    },
+
+    {
+        0x0875, 0x0793, 0x1B41, 0x1782, 0x0DEF, 0x1D20, 0x13BE, 0x0095,
+        0x1650, 0x19D4, 0x0DE3, 0x0980, 0x18F2, 0x0CA3, 0x0098, 0x149A
+    },
+
+    {
+        0x0B81, 0x0AD2, 0x1BBA, 0x1A02, 0x027B, 0x1906, 0x07F5, 0x1CAE,
+        0x0C3F, 0x02F6, 0x1298, 0x175E, 0x15B2, 0x13D8, 0x14CC, 0x161A
+    },
+
+    {
+        0x0A42, 0x15F3, 0x0870, 0x1C1D, 0x1203, 0x18B1, 0x1738, 0x1954,
+        0x1143, 0x1AE8, 0x1D9D, 0x155B, 0x11E8, 0x0ED9, 0x06F7, 0x04CA
+    }
+};
+
+static uint16_t p_drms_tab_add[ 16 ][ 16 ] =
+{
+    {
+        0x0706, 0x175A, 0x0DEF, 0x1E72, 0x0297, 0x1B0E, 0x1D5A, 0x15B8,
+        0x13E2, 0x1347, 0x10C6, 0x0B4F, 0x0629, 0x0A75, 0x0A9B, 0x0F55
+    },
+
+    {
+        0x1A69, 0x09BF, 0x0BA6, 0x1582, 0x1086, 0x1921, 0x01CB, 0x1C6A,
+        0x0FF5, 0x00F7, 0x0A67, 0x0A1E, 0x1838, 0x0196, 0x10D6, 0x0C7A
+    },
+
+    {
+        0x180E, 0x038D, 0x1ADD, 0x0684, 0x154A, 0x0AB0, 0x18A4, 0x0D73,
+        0x1641, 0x0EC6, 0x09F1, 0x1A62, 0x0414, 0x162A, 0x194E, 0x1EC9
+    },
+
+    {
+        0x022F, 0x0296, 0x1104, 0x14FC, 0x096C, 0x1D02, 0x09BD, 0x027C,
+        0x080E, 0x1324, 0x128C, 0x0DC1, 0x00B9, 0x17F2, 0x0CBC, 0x0F97
+    },
+
+    {
+        0x1B93, 0x1C3C, 0x0415, 0x0395, 0x0C7A, 0x06CC, 0x0D4B, 0x16E2,
+        0x04A2, 0x0DAB, 0x1228, 0x012B, 0x0896, 0x0012, 0x1CD6, 0x1DAC
+    },
+
+    {
+        0x080D, 0x0446, 0x047A, 0x00AD, 0x029E, 0x0686, 0x17C3, 0x1466,
+        0x0D16, 0x1896, 0x076E, 0x00CD, 0x17DC, 0x1E9F, 0x1A7C, 0x02BB
+    },
+
+    {
+        0x0D06, 0x112B, 0x14CB, 0x0A03, 0x1541, 0x1290, 0x0F6D, 0x1503,
+        0x084B, 0x0382, 0x1A3F, 0x0371, 0x1977, 0x0B67, 0x0CAD, 0x1DF8
+    },
+
+    {
+        0x1CE3, 0x1306, 0x13F8, 0x1163, 0x1B0B, 0x00BD, 0x0BF0, 0x1A4F,
+        0x16F7, 0x0B4F, 0x0CF8, 0x1254, 0x0541, 0x100D, 0x0296, 0x0410
+    },
+
+    {
+        0x1A2B, 0x1169, 0x17D9, 0x0819, 0x03D6, 0x0D03, 0x194D, 0x184A,
+        0x07CA, 0x1989, 0x0FAD, 0x011C, 0x1C71, 0x0EF6, 0x0DC8, 0x0F2F
+    },
+
+    {
+        0x0FA5, 0x11BE, 0x0F3B, 0x1D52, 0x0DE2, 0x016E, 0x1AD1, 0x0C4A,
+        0x1BC2, 0x0AC9, 0x1485, 0x1BEE, 0x0949, 0x1A79, 0x1894, 0x12BB
+    },
+
+    {
+        0x17B6, 0x14F5, 0x16B1, 0x142C, 0x1301, 0x03EF, 0x16FF, 0x0D37,
+        0x0D78, 0x01FF, 0x00D6, 0x1053, 0x1A2A, 0x0F61, 0x1352, 0x0C7F
+    },
+
+    {
+        0x137F, 0x09C4, 0x1D96, 0x021D, 0x1037, 0x1B19, 0x10EF, 0x14E4,
+        0x02A0, 0x0236, 0x0A5D, 0x1519, 0x141C, 0x1399, 0x007E, 0x1E74
+    },
+
+    {
+        0x0941, 0x1B3C, 0x0062, 0x0371, 0x09AD, 0x08E8, 0x0A24, 0x0B97,
+        0x1ED2, 0x0889, 0x136B, 0x0006, 0x1C4C, 0x0444, 0x06F8, 0x0DFB
+    },
+
+    {
+        0x1D0F, 0x198D, 0x0700, 0x0AFC, 0x1781, 0x12F3, 0x10DA, 0x1F19,
+        0x1055, 0x0DC9, 0x1860, 0x012B, 0x05BF, 0x082D, 0x0C17, 0x1941
+    },
+
+    {
+        0x0359, 0x1232, 0x104C, 0x0762, 0x0897, 0x1D6C, 0x030F, 0x1A36,
+        0x16B0, 0x094D, 0x1782, 0x036F, 0x0EEA, 0x06E6, 0x0D00, 0x0187
+    },
+
+    {
+        0x17E2, 0x05E5, 0x19FA, 0x1950, 0x146A, 0x0B2A, 0x0512, 0x0EE0,
+        0x1E27, 0x112D, 0x1DF0, 0x0B13, 0x0378, 0x1DD0, 0x00C1, 0x01E6
+    }
+};
+
diff --git a/src/mp4ff/mp4atom.c b/src/mp4ff/mp4atom.c
new file mode 100644
index 000000000..b75a3da7f
--- /dev/null
+++ b/src/mp4ff/mp4atom.c
@@ -0,0 +1,781 @@
+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
+**
+** $Id: mp4atom.c,v 1.17 2004/01/11 15:52:18 menno Exp $
+**/
+
+#include <stdlib.h>
+#include "mp4ffint.h"
+
+#include "drms.h"
+
+/* parse atom header size */
+static int32_t mp4ff_atom_get_size(const int8_t *data)
+{
+    uint32_t result;
+    uint32_t a, b, c, d;
+
+    a = (uint8_t)data[0];
+    b = (uint8_t)data[1];
+    c = (uint8_t)data[2];
+    d = (uint8_t)data[3];
+
+    result = (a<<24) | (b<<16) | (c<<8) | d;
+    //if (result > 0 && result < 8) result = 8;
+
+    return (int32_t)result;
+}
+
+/* comnapre 2 atom names, returns 1 for equal, 0 for unequal */
+static int32_t mp4ff_atom_compare(const int8_t a1, const int8_t b1, const int8_t c1, const int8_t d1,
+                                  const int8_t a2, const int8_t b2, const int8_t c2, const int8_t d2)
+{
+    if (a1 == a2 && b1 == b2 && c1 == c2 && d1 == d2)
+        return 1;
+    else
+        return 0;
+}
+
+static uint8_t mp4ff_atom_name_to_type(const int8_t a, const int8_t b,
+                                       const int8_t c, const int8_t d)
+{
+    if (a == 'm')
+    {
+        if (mp4ff_atom_compare(a,b,c,d, 'm','o','o','v'))
+            return ATOM_MOOV;
+        else if (mp4ff_atom_compare(a,b,c,d, 'm','i','n','f'))
+            return ATOM_MINF;
+        else if (mp4ff_atom_compare(a,b,c,d, 'm','d','i','a'))
+            return ATOM_MDIA;
+        else if (mp4ff_atom_compare(a,b,c,d, 'm','d','a','t'))
+            return ATOM_MDAT;
+        else if (mp4ff_atom_compare(a,b,c,d, 'm','d','h','d'))
+            return ATOM_MDHD;
+        else if (mp4ff_atom_compare(a,b,c,d, 'm','v','h','d'))
+            return ATOM_MVHD;
+        else if (mp4ff_atom_compare(a,b,c,d, 'm','p','4','a'))
+            return ATOM_MP4A;
+        else if (mp4ff_atom_compare(a,b,c,d, 'm','p','4','v'))
+            return ATOM_MP4V;
+        else if (mp4ff_atom_compare(a,b,c,d, 'm','p','4','s'))
+            return ATOM_MP4S;
+        else if (mp4ff_atom_compare(a,b,c,d, 'm','e','t','a'))
+            return ATOM_META;
+    } else if (a == 't') {
+        if (mp4ff_atom_compare(a,b,c,d, 't','r','a','k'))
+            return ATOM_TRAK;
+        else if (mp4ff_atom_compare(a,b,c,d, 't','k','h','d'))
+            return ATOM_TKHD;
+        else if (mp4ff_atom_compare(a,b,c,d, 't','r','e','f'))
+            return ATOM_TREF;
+        else if (mp4ff_atom_compare(a,b,c,d, 't','r','k','n'))
+            return ATOM_TRACK;
+        else if (mp4ff_atom_compare(a,b,c,d, 't','m','p','o'))
+            return ATOM_TEMPO;
+    } else if (a == 's') {
+        if (mp4ff_atom_compare(a,b,c,d, 's','t','b','l'))
+            return ATOM_STBL;
+        else if (mp4ff_atom_compare(a,b,c,d, 's','m','h','d'))
+            return ATOM_SMHD;
+        else if (mp4ff_atom_compare(a,b,c,d, 's','t','s','d'))
+            return ATOM_STSD;
+        else if (mp4ff_atom_compare(a,b,c,d, 's','t','t','s'))
+            return ATOM_STTS;
+        else if (mp4ff_atom_compare(a,b,c,d, 's','t','c','o'))
+            return ATOM_STCO;
+        else if (mp4ff_atom_compare(a,b,c,d, 's','t','s','c'))
+            return ATOM_STSC;
+        else if (mp4ff_atom_compare(a,b,c,d, 's','t','s','z'))
+            return ATOM_STSZ;
+        else if (mp4ff_atom_compare(a,b,c,d, 's','t','z','2'))
+            return ATOM_STZ2;
+        else if (mp4ff_atom_compare(a,b,c,d, 's','k','i','p'))
+            return ATOM_SKIP;
+        else if (mp4ff_atom_compare(a,b,c,d, 's','i','n','f'))
+            return ATOM_SINF;
+        else if (mp4ff_atom_compare(a,b,c,d, 's','c','h','i'))
+            return ATOM_SCHI;
+    } else if (a == '©') {
+        if (mp4ff_atom_compare(a,b,c,d, '©','n','a','m'))
+            return ATOM_TITLE;
+        else if (mp4ff_atom_compare(a,b,c,d, '©','A','R','T'))
+            return ATOM_ARTIST;
+        else if (mp4ff_atom_compare(a,b,c,d, '©','w','r','t'))
+            return ATOM_WRITER;
+        else if (mp4ff_atom_compare(a,b,c,d, '©','a','l','b'))
+            return ATOM_ALBUM;
+        else if (mp4ff_atom_compare(a,b,c,d, '©','d','a','y'))
+            return ATOM_DATE;
+        else if (mp4ff_atom_compare(a,b,c,d, '©','t','o','o'))
+            return ATOM_TOOL;
+        else if (mp4ff_atom_compare(a,b,c,d, '©','c','m','t'))
+            return ATOM_COMMENT;
+        else if (mp4ff_atom_compare(a,b,c,d, '©','g','e','n'))
+            return ATOM_GENRE1;
+    }
+
+    if (mp4ff_atom_compare(a,b,c,d, 'e','d','t','s'))
+        return ATOM_EDTS;
+    else if (mp4ff_atom_compare(a,b,c,d, 'e','s','d','s'))
+        return ATOM_ESDS;
+    else if (mp4ff_atom_compare(a,b,c,d, 'f','t','y','p'))
+        return ATOM_FTYP;
+    else if (mp4ff_atom_compare(a,b,c,d, 'f','r','e','e'))
+        return ATOM_FREE;
+    else if (mp4ff_atom_compare(a,b,c,d, 'h','m','h','d'))
+        return ATOM_HMHD;
+    else if (mp4ff_atom_compare(a,b,c,d, 'v','m','h','d'))
+        return ATOM_VMHD;
+    else if (mp4ff_atom_compare(a,b,c,d, 'u','d','t','a'))
+        return ATOM_UDTA;
+    else if (mp4ff_atom_compare(a,b,c,d, 'i','l','s','t'))
+        return ATOM_ILST;
+    else if (mp4ff_atom_compare(a,b,c,d, 'n','a','m','e'))
+        return ATOM_NAME;
+    else if (mp4ff_atom_compare(a,b,c,d, 'd','a','t','a'))
+        return ATOM_DATA;
+    else if (mp4ff_atom_compare(a,b,c,d, 'd','i','s','k'))
+        return ATOM_DISC;
+    else if (mp4ff_atom_compare(a,b,c,d, 'g','n','r','e'))
+        return ATOM_GENRE2;
+    else if (mp4ff_atom_compare(a,b,c,d, 'c','o','v','r'))
+		return ATOM_COVER;
+    else if (mp4ff_atom_compare(a,b,c,d, 'c','p','i','l'))
+        return ATOM_COMPILATION;
+    else if (mp4ff_atom_compare(a,b,c,d, 'c','t','t','s'))
+		return ATOM_CTTS;
+    else if (mp4ff_atom_compare(a,b,c,d, 'd','r','m','s'))
+		return ATOM_DRMS;
+    else if (mp4ff_atom_compare(a,b,c,d, 'f','r','m','a'))
+		return ATOM_FRMA;
+    else if (mp4ff_atom_compare(a,b,c,d, 'p','r','i','v'))
+		return ATOM_PRIV;
+    else if (mp4ff_atom_compare(a,b,c,d, 'i','v','i','v'))
+		return ATOM_IVIV;
+	else
+        return ATOM_UNKNOWN;
+}
+
+/* read atom header, return atom size, atom size is with header included */
+uint64_t mp4ff_atom_read_header(mp4ff_t *f, uint8_t *atom_type, uint8_t *header_size)
+{
+    uint64_t size;
+    int32_t ret;
+    int8_t atom_header[8];
+
+    ret = mp4ff_read_data(f, atom_header, 8);
+    if (ret != 8)
+        return 0;
+
+    size = mp4ff_atom_get_size(atom_header);
+    *header_size = 8;
+
+    /* check for 64 bit atom size */
+    if (size == 1)
+    {
+        *header_size = 16;
+        size = mp4ff_read_int64(f);
+    }
+
+    //printf("%c%c%c%c\n", atom_header[4], atom_header[5], atom_header[6], atom_header[7]);
+
+    *atom_type = mp4ff_atom_name_to_type(atom_header[4], atom_header[5], atom_header[6], atom_header[7]);
+
+    return size;
+}
+
+static int32_t mp4ff_read_stsz(mp4ff_t *f)
+{
+    mp4ff_read_char(f); /* version */
+    mp4ff_read_int24(f); /* flags */
+    f->track[f->total_tracks - 1]->stsz_sample_size = mp4ff_read_int32(f);
+    f->track[f->total_tracks - 1]->stsz_sample_count = mp4ff_read_int32(f);
+
+    if (f->track[f->total_tracks - 1]->stsz_sample_size == 0)
+    {
+        int32_t i;
+        f->track[f->total_tracks - 1]->stsz_table =
+            (int32_t*)malloc(f->track[f->total_tracks - 1]->stsz_sample_count*sizeof(int32_t));
+
+        for (i = 0; i < f->track[f->total_tracks - 1]->stsz_sample_count; i++)
+        {
+            f->track[f->total_tracks - 1]->stsz_table[i] = mp4ff_read_int32(f);
+        }
+    }
+
+    return 0;
+}
+
+static int32_t mp4ff_read_esds(mp4ff_t *f)
+{
+    uint8_t tag;
+	uint32_t temp;
+	
+    mp4ff_read_char(f); /* version */
+    mp4ff_read_int24(f); /* flags */
+
+    /* get and verify ES_DescrTag */
+    tag = mp4ff_read_char(f);
+    if (tag == 0x03)
+    {
+        /* read length */
+        if (mp4ff_read_mp4_descr_length(f) < 5 + 15)
+        {
+            return 1;
+        }
+        /* skip 3 bytes */
+        mp4ff_read_int24(f);
+    } else {
+        /* skip 2 bytes */
+        mp4ff_read_int16(f);
+    }
+
+    /* get and verify DecoderConfigDescrTab */
+    if (mp4ff_read_char(f) != 0x04)
+    {
+        return 1;
+    }
+
+    /* read length */
+	temp = mp4ff_read_mp4_descr_length(f);
+    if (temp < 13) return 1;
+
+	f->track[f->total_tracks - 1]->audioType = mp4ff_read_char(f);
+    mp4ff_read_int32(f);//0x15000414 ????
+    f->track[f->total_tracks - 1]->maxBitrate = mp4ff_read_int32(f);
+    f->track[f->total_tracks - 1]->avgBitrate = mp4ff_read_int32(f);
+    
+    /* get and verify DecSpecificInfoTag */
+    if (mp4ff_read_char(f) != 0x05)
+    {
+        return 1;
+    }
+
+    /* read length */
+    f->track[f->total_tracks - 1]->decoderConfigLen = mp4ff_read_mp4_descr_length(f); 
+
+    if (f->track[f->total_tracks - 1]->decoderConfig)
+        free(f->track[f->total_tracks - 1]->decoderConfig);
+    f->track[f->total_tracks - 1]->decoderConfig = malloc(f->track[f->total_tracks - 1]->decoderConfigLen);
+    if (f->track[f->total_tracks - 1]->decoderConfig)
+    {
+        mp4ff_read_data(f, f->track[f->total_tracks - 1]->decoderConfig, f->track[f->total_tracks - 1]->decoderConfigLen);
+    } else {
+        f->track[f->total_tracks - 1]->decoderConfigLen = 0;
+    }
+
+    /* will skip the remainder of the atom */
+    return 0;
+}
+
+static int32_t mp4ff_read_mp4a(mp4ff_t *f)
+{
+    uint64_t size;
+    int32_t i;
+    uint8_t atom_type = 0;
+    uint8_t header_size = 0;
+
+    for (i = 0; i < 6; i++)
+    {
+        mp4ff_read_char(f); /* reserved */
+    }
+    /* data_reference_index */ mp4ff_read_int16(f);
+
+    mp4ff_read_int32(f); /* reserved */
+    mp4ff_read_int32(f); /* reserved */
+
+    f->track[f->total_tracks - 1]->channelCount = mp4ff_read_int16(f);
+    f->track[f->total_tracks - 1]->sampleSize = mp4ff_read_int16(f);
+
+    mp4ff_read_int16(f);
+    mp4ff_read_int16(f);
+
+    f->track[f->total_tracks - 1]->sampleRate = mp4ff_read_int16(f);
+
+    mp4ff_read_int16(f);
+
+    size = mp4ff_atom_read_header(f, &atom_type, &header_size);
+    if (atom_type == ATOM_ESDS)
+    {
+        mp4ff_read_esds(f);
+    }
+
+    return 0;
+}
+
+#ifdef ITUNES_DRM
+static int32_t mp4ff_read_drms(mp4ff_t *f, uint64_t skip)
+{
+    uint64_t size;
+    int32_t i;
+    uint8_t atom_type = 0;
+    uint8_t header_size = 0;
+    uint32_t drms_user_key[4];
+
+    if (drms_get_user_key(NULL, drms_user_key) == 0)
+    {
+        f->track[f->total_tracks - 1]->p_drms = drms_alloc();
+
+        drms_init( f->track[f->total_tracks - 1]->p_drms,
+            DRMS_INIT_UKEY, (uint8_t *)drms_user_key,
+            sizeof(drms_user_key) );
+    }
+
+    for (i = 0; i < 6; i++)
+    {
+        mp4ff_read_char(f); /* reserved */
+    }
+    /* data_reference_index */ mp4ff_read_int16(f);
+
+    mp4ff_read_int32(f); /* reserved */
+    mp4ff_read_int32(f); /* reserved */
+
+    f->track[f->total_tracks - 1]->channelCount = mp4ff_read_int16(f);
+    f->track[f->total_tracks - 1]->sampleSize = mp4ff_read_int16(f);
+
+    mp4ff_read_int16(f);
+    mp4ff_read_int16(f);
+
+    f->track[f->total_tracks - 1]->sampleRate = mp4ff_read_int16(f);
+
+    mp4ff_read_int16(f);
+
+    size = mp4ff_atom_read_header(f, &atom_type, &header_size);
+    if (atom_type == ATOM_ESDS)
+    {
+        mp4ff_read_esds(f);
+    }
+    mp4ff_set_position(f, skip+size+28);
+
+    size = mp4ff_atom_read_header(f, &atom_type, &header_size);
+    if (atom_type == ATOM_SINF)
+    {
+        parse_sub_atoms(f, size-header_size);
+    }
+
+    return 0;
+}
+
+static int32_t mp4ff_read_frma(mp4ff_t *f)
+{
+    uint8_t atom_type;
+    int8_t type[4];
+
+    mp4ff_read_data(f, type, 4);
+
+    atom_type = mp4ff_atom_name_to_type(type[0], type[1], type[2], type[3]);
+
+    if (atom_type == ATOM_MP4A)
+    {
+        f->track[f->total_tracks - 1]->type = TRACK_AUDIO;
+    } else if (atom_type == ATOM_MP4V) {
+        f->track[f->total_tracks - 1]->type = TRACK_VIDEO;
+    } else if (atom_type == ATOM_MP4S) {
+        f->track[f->total_tracks - 1]->type = TRACK_SYSTEM;
+    } else {
+        f->track[f->total_tracks - 1]->type = TRACK_UNKNOWN;
+    }
+
+    return 0;
+}
+
+static int32_t mp4ff_read_name(mp4ff_t *f, uint64_t size)
+{
+    uint8_t *data = malloc(size);
+    mp4ff_read_data(f, data, size);
+
+    if (f->track[f->total_tracks - 1]->p_drms != NULL)
+    {
+        drms_init(f->track[f->total_tracks - 1]->p_drms,
+            DRMS_INIT_NAME, data, strlen(data) );
+    }
+
+    if (data)
+        free(data);
+
+    return 0;
+}
+
+static int32_t mp4ff_read_priv(mp4ff_t *f, uint64_t size)
+{
+    uint8_t *data = malloc(size);
+    mp4ff_read_data(f, data, size);
+
+    if (f->track[f->total_tracks - 1]->p_drms != 0)
+    {
+        drms_init(f->track[f->total_tracks - 1]->p_drms,
+            DRMS_INIT_PRIV, data, size );
+    }
+
+    if (data)
+        free(data);
+
+    return 0;
+}
+
+static int32_t mp4ff_read_iviv(mp4ff_t *f, uint64_t size)
+{
+    uint8_t *data = malloc(size);
+    mp4ff_read_data(f, data, size);
+
+    if (f->track[f->total_tracks - 1]->p_drms != 0)
+    {
+        drms_init(f->track[f->total_tracks - 1]->p_drms,
+            DRMS_INIT_IVIV, data, sizeof(uint32_t) * 4 );
+    }
+
+    if (data)
+        free(data);
+
+    return 0;
+}
+#endif
+
+static int32_t mp4ff_read_stsd(mp4ff_t *f)
+{
+    int32_t i;
+    uint8_t header_size = 0;
+
+    mp4ff_read_char(f); /* version */
+    mp4ff_read_int24(f); /* flags */
+
+    f->track[f->total_tracks - 1]->stsd_entry_count = mp4ff_read_int32(f);
+
+    for (i = 0; i < f->track[f->total_tracks - 1]->stsd_entry_count; i++)
+    {
+        uint64_t skip = mp4ff_position(f);
+        uint64_t size;
+        uint8_t atom_type = 0;
+        size = mp4ff_atom_read_header(f, &atom_type, &header_size);
+        skip += size;
+
+        if (atom_type == ATOM_MP4A)
+        {
+            f->track[f->total_tracks - 1]->type = TRACK_AUDIO;
+            mp4ff_read_mp4a(f);
+        } else if (atom_type == ATOM_MP4V) {
+            f->track[f->total_tracks - 1]->type = TRACK_VIDEO;
+        } else if (atom_type == ATOM_MP4S) {
+            f->track[f->total_tracks - 1]->type = TRACK_SYSTEM;
+#ifdef ITUNES_DRM
+        } else if (atom_type == ATOM_DRMS) {
+            // track type is read from the "frma" atom
+            f->track[f->total_tracks - 1]->type = TRACK_UNKNOWN;
+            mp4ff_read_drms(f, skip-size+header_size);
+#endif
+        } else {
+            f->track[f->total_tracks - 1]->type = TRACK_UNKNOWN;
+        }
+
+        mp4ff_set_position(f, skip);
+    }
+
+    return 0;
+}
+
+static int32_t mp4ff_read_stsc(mp4ff_t *f)
+{
+    int32_t i;
+
+    mp4ff_read_char(f); /* version */ 
+    mp4ff_read_int24(f); /* flags */ 
+    f->track[f->total_tracks - 1]->stsc_entry_count = mp4ff_read_int32(f);
+
+    f->track[f->total_tracks - 1]->stsc_first_chunk =
+        (int32_t*)malloc(f->track[f->total_tracks - 1]->stsc_entry_count*sizeof(int32_t));
+    f->track[f->total_tracks - 1]->stsc_samples_per_chunk =
+        (int32_t*)malloc(f->track[f->total_tracks - 1]->stsc_entry_count*sizeof(int32_t));
+    f->track[f->total_tracks - 1]->stsc_sample_desc_index =
+        (int32_t*)malloc(f->track[f->total_tracks - 1]->stsc_entry_count*sizeof(int32_t));
+
+    for (i = 0; i < f->track[f->total_tracks - 1]->stsc_entry_count; i++)
+    {
+        f->track[f->total_tracks - 1]->stsc_first_chunk[i] = mp4ff_read_int32(f);
+        f->track[f->total_tracks - 1]->stsc_samples_per_chunk[i] = mp4ff_read_int32(f);
+        f->track[f->total_tracks - 1]->stsc_sample_desc_index[i] = mp4ff_read_int32(f);
+    }
+
+    return 0;
+}
+
+static int32_t mp4ff_read_stco(mp4ff_t *f)
+{
+    int32_t i;
+
+    mp4ff_read_char(f); /* version */
+    mp4ff_read_int24(f); /* flags */
+    f->track[f->total_tracks - 1]->stco_entry_count = mp4ff_read_int32(f);
+
+    f->track[f->total_tracks - 1]->stco_chunk_offset =
+        (int32_t*)malloc(f->track[f->total_tracks - 1]->stco_entry_count*sizeof(int32_t));
+
+    for (i = 0; i < f->track[f->total_tracks - 1]->stco_entry_count; i++)
+    {
+        f->track[f->total_tracks - 1]->stco_chunk_offset[i] = mp4ff_read_int32(f);
+    }
+
+    return 0;
+}
+
+static int32_t mp4ff_read_ctts(mp4ff_t *f)
+{
+    int32_t i;
+	mp4ff_track_t * p_track = f->track[f->total_tracks - 1];
+
+	if (p_track->ctts_entry_count) return 0;
+
+    mp4ff_read_char(f); /* version */
+    mp4ff_read_int24(f); /* flags */
+    p_track->ctts_entry_count = mp4ff_read_int32(f);
+
+    p_track->ctts_sample_count = (int32_t*)malloc(p_track->ctts_entry_count * sizeof(int32_t));
+    p_track->ctts_sample_offset = (int32_t*)malloc(p_track->ctts_entry_count * sizeof(int32_t));
+
+	if (p_track->ctts_sample_count == 0 || p_track->ctts_sample_offset == 0)
+	{
+		if (p_track->ctts_sample_count) {free(p_track->ctts_sample_count);p_track->ctts_sample_count=0;}
+		if (p_track->ctts_sample_offset) {free(p_track->ctts_sample_offset);p_track->ctts_sample_offset=0;}
+		p_track->ctts_entry_count = 0;
+		return 0;
+	}
+	else
+	{
+		for (i = 0; i < f->track[f->total_tracks - 1]->ctts_entry_count; i++)
+		{
+			p_track->ctts_sample_count[i] = mp4ff_read_int32(f);
+			p_track->ctts_sample_offset[i] = mp4ff_read_int32(f);
+		}
+		return 1;
+	}
+}
+
+static int32_t mp4ff_read_stts(mp4ff_t *f)
+{
+    int32_t i;
+	mp4ff_track_t * p_track = f->track[f->total_tracks - 1];
+
+	if (p_track->stts_entry_count) return 0;
+
+    mp4ff_read_char(f); /* version */
+    mp4ff_read_int24(f); /* flags */
+    p_track->stts_entry_count = mp4ff_read_int32(f);
+
+    p_track->stts_sample_count = (int32_t*)malloc(p_track->stts_entry_count * sizeof(int32_t));
+    p_track->stts_sample_delta = (int32_t*)malloc(p_track->stts_entry_count * sizeof(int32_t));
+	
+	if (p_track->stts_sample_count == 0 || p_track->stts_sample_delta == 0)
+	{
+		if (p_track->stts_sample_count) {free(p_track->stts_sample_count);p_track->stts_sample_count=0;}
+		if (p_track->stts_sample_delta) {free(p_track->stts_sample_delta);p_track->stts_sample_delta=0;}
+		p_track->stts_entry_count = 0;
+		return 0;
+	}
+	else
+	{
+		for (i = 0; i < f->track[f->total_tracks - 1]->stts_entry_count; i++)
+		{
+			p_track->stts_sample_count[i] = mp4ff_read_int32(f);
+			p_track->stts_sample_delta[i] = mp4ff_read_int32(f);
+		}
+		return 1;
+	}
+}
+
+static int32_t mp4ff_read_mvhd(mp4ff_t *f)
+{
+    int32_t i;
+
+    mp4ff_read_char(f); /* version */
+    mp4ff_read_int24(f); /* flags */
+    /* creation_time */ mp4ff_read_int32(f);
+    /* modification_time */ mp4ff_read_int32(f);
+    f->time_scale = mp4ff_read_int32(f);
+    f->duration = mp4ff_read_int32(f);
+    /* preferred_rate */ mp4ff_read_int32(f); /*mp4ff_read_fixed32(f);*/
+    /* preferred_volume */ mp4ff_read_int16(f); /*mp4ff_read_fixed16(f);*/
+    for (i = 0; i < 10; i++)
+    {
+        /* reserved */ mp4ff_read_char(f);
+    }
+    for (i = 0; i < 9; i++)
+    {
+        mp4ff_read_int32(f); /* matrix */
+    }
+    /* preview_time */ mp4ff_read_int32(f);
+    /* preview_duration */ mp4ff_read_int32(f);
+    /* poster_time */ mp4ff_read_int32(f);
+    /* selection_time */ mp4ff_read_int32(f);
+    /* selection_duration */ mp4ff_read_int32(f);
+    /* current_time */ mp4ff_read_int32(f);
+    /* next_track_id */ mp4ff_read_int32(f);
+
+    return 0;
+}
+
+#if 0
+static int32_t mp4ff_read_tkhd(mp4ff_t *f)
+{
+	uint8_t version;
+	uint32_t flags;
+    version = mp4ff_read_char(f); /* version */
+    flags = mp4ff_read_int24(f); /* flags */
+	if (version==1)
+	{
+		mp4ff_read_int64(f);//creation-time
+		mp4ff_read_int64(f);//modification-time
+		mp4ff_read_int32(f);//track-id
+		mp4ff_read_int32(f);//reserved
+		f->track[f->total_tracks - 1]->duration = mp4ff_read_int64(f);//duration
+	}
+	else //version == 0
+	{
+		mp4ff_read_int32(f);//creation-time
+		mp4ff_read_int32(f);//modification-time
+		mp4ff_read_int32(f);//track-id
+		mp4ff_read_int32(f);//reserved
+		f->track[f->total_tracks - 1]->duration = mp4ff_read_int32(f);//duration
+		if (f->track[f->total_tracks - 1]->duration == 0xFFFFFFFF)
+			f->track[f->total_tracks - 1]->duration = 0xFFFFFFFFFFFFFFFF;
+
+	}
+	mp4ff_read_int32(f);//reserved
+	mp4ff_read_int32(f);//reserved
+	mp4ff_read_int16(f);//layer
+	mp4ff_read_int16(f);//pre-defined
+	mp4ff_read_int16(f);//volume
+	mp4ff_read_int16(f);//reserved
+	
+	//matrix
+	mp4ff_read_int32(f); mp4ff_read_int32(f); mp4ff_read_int32(f);
+	mp4ff_read_int32(f); mp4ff_read_int32(f); mp4ff_read_int32(f);
+	mp4ff_read_int32(f); mp4ff_read_int32(f); mp4ff_read_int32(f);
+	mp4ff_read_int32(f);//width
+	mp4ff_read_int32(f);//height
+	return 1;
+}
+#endif
+
+static int32_t mp4ff_read_mdhd(mp4ff_t *f)
+{
+	uint32_t version;
+
+	version = mp4ff_read_int32(f);
+	if (version==1)
+	{
+		mp4ff_read_int64(f);//creation-time
+		mp4ff_read_int64(f);//modification-time
+		f->track[f->total_tracks - 1]->timeScale = mp4ff_read_int32(f);//timescale
+		f->track[f->total_tracks - 1]->duration = mp4ff_read_int64(f);//duration
+	}
+	else //version == 0
+	{
+		uint32_t temp;
+
+		mp4ff_read_int32(f);//creation-time
+		mp4ff_read_int32(f);//modification-time
+		f->track[f->total_tracks - 1]->timeScale = mp4ff_read_int32(f);//timescale
+		temp = mp4ff_read_int32(f);
+		f->track[f->total_tracks - 1]->duration = (temp == (uint32_t)(-1)) ? (uint64_t)(-1) : (uint64_t)(temp);
+	}
+	mp4ff_read_int16(f);
+	mp4ff_read_int16(f);
+	return 1;
+}
+#ifdef USE_TAGGING
+static int32_t mp4ff_read_meta(mp4ff_t *f, const uint64_t size)
+{
+    uint64_t subsize, sumsize = 0;
+    uint8_t atom_type;
+    uint8_t header_size = 0;
+
+    mp4ff_read_char(f); /* version */
+    mp4ff_read_int24(f); /* flags */
+
+    while (sumsize < (size-12))
+    {
+        subsize = mp4ff_atom_read_header(f, &atom_type, &header_size);
+        if (atom_type == ATOM_ILST)
+        {
+            mp4ff_parse_metadata(f, (uint32_t)(subsize-(header_size+4)));
+        } else {
+            mp4ff_set_position(f, mp4ff_position(f)+subsize-header_size);
+        }
+        sumsize += subsize;
+    }
+
+    return 0;
+}
+#endif
+
+int32_t mp4ff_atom_read(mp4ff_t *f, const int32_t size, const uint8_t atom_type)
+{
+	uint64_t dest_position = mp4ff_position(f)+size-8;
+    if (atom_type == ATOM_STSZ)
+    {
+        /* sample size box */
+        mp4ff_read_stsz(f);
+    } else if (atom_type == ATOM_STTS) {
+        /* time to sample box */
+        mp4ff_read_stts(f);
+	} else if (atom_type == ATOM_CTTS) {
+		/* composition offset box */
+		mp4ff_read_ctts(f);
+    } else if (atom_type == ATOM_STSC) {
+        /* sample to chunk box */
+        mp4ff_read_stsc(f);
+    } else if (atom_type == ATOM_STCO) {
+        /* chunk offset box */
+        mp4ff_read_stco(f);
+    } else if (atom_type == ATOM_STSD) {
+        /* sample description box */
+        mp4ff_read_stsd(f);
+    } else if (atom_type == ATOM_MVHD) {
+        /* movie header box */
+        mp4ff_read_mvhd(f);
+    } else if (atom_type == ATOM_MDHD) {
+        /* track header */
+        mp4ff_read_mdhd(f);
+#ifdef ITUNES_DRM
+    } else if (atom_type == ATOM_FRMA) {
+        /* DRM track format */
+        mp4ff_read_frma(f);
+    } else if (atom_type == ATOM_IVIV) {
+        mp4ff_read_iviv(f, size-8);
+    } else if (atom_type == ATOM_NAME) {
+        mp4ff_read_name(f, size-8);
+    } else if (atom_type == ATOM_PRIV) {
+        mp4ff_read_priv(f, size-8);
+#endif
+#ifdef USE_TAGGING
+    } else if (atom_type == ATOM_META) {
+        /* iTunes Metadata box */
+        mp4ff_read_meta(f, size);
+#endif
+    }
+     
+    mp4ff_set_position(f, dest_position);
+
+
+    return 0;
+}
diff --git a/src/mp4ff/mp4ff.c b/src/mp4ff/mp4ff.c
new file mode 100644
index 000000000..07dc99f3f
--- /dev/null
+++ b/src/mp4ff/mp4ff.c
@@ -0,0 +1,428 @@
+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
+**
+** $Id: mp4ff.c,v 1.15 2004/01/11 15:52:18 menno Exp $
+**/
+
+#include <stdlib.h>
+#include <string.h>
+#include "mp4ffint.h"
+
+#include "drms.h"
+
+mp4ff_t *mp4ff_open_read(mp4ff_callback_t *f)
+{
+    mp4ff_t *ff = malloc(sizeof(mp4ff_t));
+
+    memset(ff, 0, sizeof(mp4ff_t));
+
+    ff->stream = f;
+
+    parse_atoms(ff);
+
+    return ff;
+}
+
+void mp4ff_close(mp4ff_t *ff)
+{
+    int32_t i;
+
+    for (i = 0; i < ff->total_tracks; i++)
+    {
+        if (ff->track[i])
+        {
+            if (ff->track[i]->stsz_table)
+                free(ff->track[i]->stsz_table);
+            if (ff->track[i]->stts_sample_count)
+                free(ff->track[i]->stts_sample_count);
+            if (ff->track[i]->stts_sample_delta)
+                free(ff->track[i]->stts_sample_delta);
+            if (ff->track[i]->stsc_first_chunk)
+                free(ff->track[i]->stsc_first_chunk);
+            if (ff->track[i]->stsc_samples_per_chunk)
+                free(ff->track[i]->stsc_samples_per_chunk);
+            if (ff->track[i]->stsc_sample_desc_index)
+                free(ff->track[i]->stsc_sample_desc_index);
+            if (ff->track[i]->stco_chunk_offset)
+                free(ff->track[i]->stco_chunk_offset);
+            if (ff->track[i]->decoderConfig)
+                free(ff->track[i]->decoderConfig);
+			if (ff->track[i]->ctts_sample_count)
+				free(ff->track[i]->ctts_sample_count);
+			if (ff->track[i]->ctts_sample_offset)
+				free(ff->track[i]->ctts_sample_offset);
+#ifdef ITUNES_DRM
+            if (ff->track[i]->p_drms)
+                drms_free(ff->track[i]->p_drms);
+#endif
+            free(ff->track[i]);
+        }
+    }
+
+#ifdef USE_TAGGING
+    mp4ff_tag_delete(&(ff->tags));
+#endif
+
+    if (ff) free(ff);
+}
+
+static void mp4ff_track_add(mp4ff_t *f)
+{
+    f->total_tracks++;
+
+    f->track[f->total_tracks - 1] = malloc(sizeof(mp4ff_track_t));
+
+    memset(f->track[f->total_tracks - 1], 0, sizeof(mp4ff_track_t));
+}
+
+/* parse atoms that are sub atoms of other atoms */
+int32_t parse_sub_atoms(mp4ff_t *f, const uint64_t total_size)
+{
+    uint64_t size;
+    uint8_t atom_type = 0;
+    uint64_t counted_size = 0;
+    uint8_t header_size = 0;
+
+    while (counted_size < total_size)
+    {
+        size = mp4ff_atom_read_header(f, &atom_type, &header_size);
+        counted_size += size;
+
+        /* check for end of file */
+        if (size == 0)
+            break;
+
+        /* we're starting to read a new track, update index,
+         * so that all data and tables get written in the right place
+         */
+        if (atom_type == ATOM_TRAK)
+        {
+            mp4ff_track_add(f);
+        }
+
+        /* parse subatoms */
+        if (atom_type < SUBATOMIC)
+        {
+            parse_sub_atoms(f, size-header_size);
+        } else {
+            mp4ff_atom_read(f, (uint32_t)size, atom_type);
+        }
+    }
+
+    return 0;
+}
+
+/* parse root atoms */
+int32_t parse_atoms(mp4ff_t *f)
+{
+    uint64_t size;
+    uint8_t atom_type = 0;
+    uint8_t header_size = 0;
+
+    f->file_size = 0;
+
+    while ((size = mp4ff_atom_read_header(f, &atom_type, &header_size)) != 0)
+    {
+        f->file_size += size;
+        f->last_atom = atom_type;
+
+        if (atom_type == ATOM_MDAT && f->moov_read)
+        {
+            /* moov atom is before mdat, we can stop reading when mdat is encountered */
+            /* file position will stay at beginning of mdat data */
+//            break;
+        }
+
+        if (atom_type == ATOM_MOOV && size > header_size)
+        {
+            f->moov_read = 1;
+            f->moov_offset = mp4ff_position(f)-header_size;
+            f->moov_size = size;
+        }
+
+        /* parse subatoms */
+        if (atom_type < SUBATOMIC)
+        {
+            parse_sub_atoms(f, size-header_size);
+        } else {
+            /* skip this atom */
+            mp4ff_set_position(f, mp4ff_position(f)+size-header_size);
+        }
+    }
+
+    return 0;
+}
+
+int32_t mp4ff_get_decoder_config(const mp4ff_t *f, const int32_t track,
+                                 uint8_t** ppBuf, uint32_t* pBufSize)
+{
+    if (track >= f->total_tracks)
+    {
+        *ppBuf = NULL;
+        *pBufSize = 0;
+        return 1;
+    }
+
+    if (f->track[track]->decoderConfig == NULL || f->track[track]->decoderConfigLen == 0)
+    {
+        *ppBuf = NULL;
+        *pBufSize = 0;
+    } else {
+        *ppBuf = malloc(f->track[track]->decoderConfigLen);
+        if (*ppBuf == NULL)
+        {
+            *pBufSize = 0;
+            return 1;
+        }
+        memcpy(*ppBuf, f->track[track]->decoderConfig, f->track[track]->decoderConfigLen);
+        *pBufSize = f->track[track]->decoderConfigLen;
+    }
+
+    return 0;
+}
+
+int32_t mp4ff_get_track_type(const mp4ff_t *f, const int track)
+{
+	return f->track[track]->type;
+}
+
+int32_t mp4ff_total_tracks(const mp4ff_t *f)
+{
+    return f->total_tracks;
+}
+
+int32_t mp4ff_time_scale(const mp4ff_t *f, const int32_t track)
+{
+    return f->track[track]->timeScale;
+}
+
+uint32_t mp4ff_get_avg_bitrate(const mp4ff_t *f, const int32_t track)
+{
+	return f->track[track]->avgBitrate;
+}
+
+uint32_t mp4ff_get_max_bitrate(const mp4ff_t *f, const int32_t track)
+{
+	return f->track[track]->maxBitrate;
+}
+
+int64_t mp4ff_get_track_duration(const mp4ff_t *f, const int32_t track)
+{
+	return f->track[track]->duration;
+}
+
+int64_t mp4ff_get_track_duration_use_offsets(const mp4ff_t *f, const int32_t track)
+{
+	int64_t duration = mp4ff_get_track_duration(f,track);
+	if (duration!=-1)
+	{
+		int64_t offset = mp4ff_get_sample_offset(f,track,0);
+		if (offset > duration) duration = 0;
+		else duration -= offset;
+	}
+	return duration;
+}
+
+
+int32_t mp4ff_num_samples(const mp4ff_t *f, const int32_t track)
+{
+    int32_t i;
+    int32_t total = 0;
+
+    for (i = 0; i < f->track[track]->stts_entry_count; i++)
+    {
+        total += f->track[track]->stts_sample_count[i];
+    }
+    return total;
+}
+
+
+
+
+uint32_t mp4ff_get_sample_rate(const mp4ff_t *f, const int32_t track)
+{
+	return f->track[track]->sampleRate;
+}
+
+uint32_t mp4ff_get_channel_count(const mp4ff_t * f,const int32_t track)
+{
+	return f->track[track]->channelCount;
+}
+
+uint32_t mp4ff_get_audio_type(const mp4ff_t * f,const int32_t track)
+{
+	return f->track[track]->audioType;
+}
+
+int32_t mp4ff_get_sample_duration_use_offsets(const mp4ff_t *f, const int32_t track, const int32_t sample)
+{
+	int32_t d,o;
+	d = mp4ff_get_sample_duration(f,track,sample);
+	if (d!=-1)
+	{
+		o = mp4ff_get_sample_offset(f,track,sample);
+		if (o>d) d = 0;
+		else d -= o;
+	}
+	return d;
+}
+
+int32_t mp4ff_get_sample_duration(const mp4ff_t *f, const int32_t track, const int32_t sample)
+{
+    int32_t i, co = 0;
+
+    for (i = 0; i < f->track[track]->stts_entry_count; i++)
+    {
+		int32_t delta = f->track[track]->stts_sample_count[i];
+		if (sample < co + delta)
+			return f->track[track]->stts_sample_delta[i];
+		co += delta;
+    }
+    return (int32_t)(-1);
+}
+
+int64_t mp4ff_get_sample_position(const mp4ff_t *f, const int32_t track, const int32_t sample)
+{
+    int32_t i, co = 0;
+	int64_t acc = 0;
+
+    for (i = 0; i < f->track[track]->stts_entry_count; i++)
+    {
+		int32_t delta = f->track[track]->stts_sample_count[i];
+		if (sample < co + delta)
+		{
+			acc += f->track[track]->stts_sample_delta[i] * (sample - co);
+			return acc;
+		}
+		else
+		{
+			acc += f->track[track]->stts_sample_delta[i] * delta;
+		}
+		co += delta;
+    }
+    return (int64_t)(-1);
+}
+
+int32_t mp4ff_get_sample_offset(const mp4ff_t *f, const int32_t track, const int32_t sample)
+{
+    int32_t i, co = 0;
+
+    for (i = 0; i < f->track[track]->ctts_entry_count; i++)
+    {
+		int32_t delta = f->track[track]->ctts_sample_count[i];
+		if (sample < co + delta)
+			return f->track[track]->ctts_sample_offset[i];
+		co += delta;
+    }
+    return 0;
+}
+
+int32_t mp4ff_find_sample(const mp4ff_t *f, const int32_t track, const int64_t offset,int32_t * toskip)
+{
+	int32_t i, co = 0;
+	int64_t offset_total = 0;
+	mp4ff_track_t * p_track = f->track[track];
+
+	for (i = 0; i < p_track->stts_entry_count; i++)
+	{
+		int32_t sample_count = p_track->stts_sample_count[i];
+		int32_t sample_delta = p_track->stts_sample_delta[i];
+		int64_t offset_delta = (int64_t)sample_delta * (int64_t)sample_count;
+		if (offset < offset_total + offset_delta)
+		{
+			int64_t offset_fromstts = offset - offset_total;
+			if (toskip) *toskip = (int32_t)(offset_fromstts % sample_delta);
+			return co + (int32_t)(offset_fromstts / sample_delta);
+		}
+		else
+		{
+			offset_total += offset_delta;
+		}
+		co += sample_count;
+	}
+	return (int32_t)(-1);
+}
+
+int32_t mp4ff_find_sample_use_offsets(const mp4ff_t *f, const int32_t track, const int64_t offset,int32_t * toskip)
+{
+	return mp4ff_find_sample(f,track,offset + mp4ff_get_sample_offset(f,track,0),toskip);
+}
+
+int32_t mp4ff_read_sample(mp4ff_t *f, const int32_t track, const int32_t sample,
+                          uint8_t **audio_buffer,  uint32_t *bytes)
+{
+    int32_t result = 0;
+
+    *bytes = mp4ff_audio_frame_size(f, track, sample);
+
+	if (*bytes==0) return 0;
+
+    *audio_buffer = (uint8_t*)malloc(*bytes);
+
+    mp4ff_set_sample_position(f, track, sample);
+
+    result = mp4ff_read_data(f, *audio_buffer, *bytes);
+
+    if (!result)
+	{
+		free(*audio_buffer);
+		*audio_buffer = 0;
+        return 0;
+	}
+
+#ifdef ITUNES_DRM
+    if (f->track[track]->p_drms != NULL)
+    {
+        drms_decrypt(f->track[track]->p_drms, (uint32_t*)*audio_buffer, *bytes);
+    }
+#endif
+
+    return *bytes;
+}
+
+
+int32_t mp4ff_read_sample_v2(mp4ff_t *f, const int track, const int sample,unsigned char *buffer)
+{
+    int32_t result = 0;
+	int32_t size = mp4ff_audio_frame_size(f,track,sample);
+	if (size<=0) return 0;
+	mp4ff_set_sample_position(f, track, sample);
+	result = mp4ff_read_data(f,buffer,size);
+
+#ifdef ITUNES_DRM
+    if (f->track[track]->p_drms != NULL)
+    {
+        drms_decrypt(f->track[track]->p_drms, (uint32_t*)buffer, size);
+    }
+#endif
+
+    return result;
+}
+
+int32_t mp4ff_read_sample_getsize(mp4ff_t *f, const int track, const int sample)
+{
+	int32_t temp = mp4ff_audio_frame_size(f, track, sample);
+	if (temp<0) temp = 0;
+	return temp;
+}
diff --git a/src/mp4ff/mp4ff.dsp b/src/mp4ff/mp4ff.dsp
new file mode 100644
index 000000000..e3a2d0899
--- /dev/null
+++ b/src/mp4ff/mp4ff.dsp
@@ -0,0 +1,144 @@
+# Microsoft Developer Studio Project File - Name="mp4ff" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Static Library" 0x0104
+
+CFG=mp4ff - Win32 Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "mp4ff.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "mp4ff.mak" CFG="mp4ff - Win32 Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "mp4ff - Win32 Release" (based on "Win32 (x86) Static Library")
+!MESSAGE "mp4ff - Win32 Debug" (based on "Win32 (x86) Static Library")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=xicl6.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "mp4ff - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Target_Dir ""
+F90=df.exe
+MTL=midl.exe
+# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /FD /c
+# ADD CPP /nologo /MD /W3 /O1 /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /D "USE_TAGGING" /YX /FD /c
+# ADD BASE RSC /l 0x413 /d "NDEBUG"
+# ADD RSC /l 0x413 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=xilink6.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo
+
+!ELSEIF  "$(CFG)" == "mp4ff - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Target_Dir ""
+F90=df.exe
+MTL=midl.exe
+# ADD BASE CPP /nologo /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /YX /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /D "_DEBUG" /D "WIN32" /D "_WINDOWS" /D "USE_TAGGING" /YX /FD /GZ /c
+# ADD BASE RSC /l 0x413 /d "_DEBUG"
+# ADD RSC /l 0x413 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=xilink6.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo
+
+!ENDIF 
+
+# Begin Target
+
+# Name "mp4ff - Win32 Release"
+# Name "mp4ff - Win32 Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=.\drms.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\mp4atom.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\mp4ff.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\mp4meta.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\mp4sample.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\mp4tagupdate.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\mp4util.c
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# Begin Source File
+
+SOURCE=.\drms.h
+# End Source File
+# Begin Source File
+
+SOURCE=.\drmstables.h
+# End Source File
+# Begin Source File
+
+SOURCE=.\mp4ff.h
+# End Source File
+# Begin Source File
+
+SOURCE=.\mp4ff_int_types.h
+# End Source File
+# Begin Source File
+
+SOURCE=.\mp4ffint.h
+# End Source File
+# End Group
+# End Target
+# End Project
diff --git a/src/mp4ff/mp4ff.h b/src/mp4ff/mp4ff.h
new file mode 100644
index 000000000..5b3ba446c
--- /dev/null
+++ b/src/mp4ff/mp4ff.h
@@ -0,0 +1,128 @@
+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
+**
+** $Id: mp4ff.h,v 1.19 2004/01/11 15:52:18 menno Exp $
+**/
+
+#ifndef MP4FF_H
+#define MP4FF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#include "mp4ff_int_types.h"
+
+/* file callback structure */
+typedef struct
+{
+    uint32_t (*read)(void *user_data, void *buffer, uint32_t length);
+    uint32_t (*write)(void *udata, void *buffer, uint32_t length);
+    uint32_t (*seek)(void *user_data, uint64_t position);
+	uint32_t (*truncate)(void *user_data);
+    void *user_data;
+} mp4ff_callback_t;
+
+/* mp4 main file structure */
+typedef void* mp4ff_t;
+
+
+/* API */
+
+mp4ff_t *mp4ff_open_read(mp4ff_callback_t *f);
+void mp4ff_close(mp4ff_t *f);
+int32_t mp4ff_get_sample_duration(const mp4ff_t *f, const int32_t track, const int32_t sample);
+int32_t mp4ff_get_sample_duration_use_offsets(const mp4ff_t *f, const int32_t track, const int32_t sample);
+int64_t mp4ff_get_sample_position(const mp4ff_t *f, const int32_t track, const int32_t sample);
+int32_t mp4ff_get_sample_offset(const mp4ff_t *f, const int32_t track, const int32_t sample);
+int32_t mp4ff_find_sample(const mp4ff_t *f, const int32_t track, const int64_t offset,int32_t * toskip);
+int32_t mp4ff_find_sample_use_offsets(const mp4ff_t *f, const int32_t track, const int64_t offset,int32_t * toskip);
+
+int32_t mp4ff_read_sample(mp4ff_t *f, const int track, const int sample,
+                          unsigned char **audio_buffer,  unsigned int *bytes);
+
+int32_t mp4ff_read_sample_v2(mp4ff_t *f, const int track, const int sample,unsigned char *buffer);//returns 0 on error, number of bytes read on success, use mp4ff_read_sample_getsize() to check buffer size needed
+int32_t mp4ff_read_sample_getsize(mp4ff_t *f, const int track, const int sample);//returns 0 on error, buffer size needed for mp4ff_read_sample_v2() on success
+
+
+
+int32_t mp4ff_get_decoder_config(const mp4ff_t *f, const int track,
+                             unsigned char** ppBuf, unsigned int* pBufSize);
+int32_t mp4ff_get_track_type(const mp4ff_t *f, const int track);
+int32_t mp4ff_total_tracks(const mp4ff_t *f);
+int32_t mp4ff_num_samples(const mp4ff_t *f, const int track);
+int32_t mp4ff_time_scale(const mp4ff_t *f, const int track);
+
+uint32_t mp4ff_get_avg_bitrate(const mp4ff_t *f, const int32_t track);
+uint32_t mp4ff_get_max_bitrate(const mp4ff_t *f, const int32_t track);
+int64_t mp4ff_get_track_duration(const mp4ff_t *f, const int32_t track); //returns (-1) if unknown
+int64_t mp4ff_get_track_duration_use_offsets(const mp4ff_t *f, const int32_t track); //returns (-1) if unknown
+uint32_t mp4ff_get_sample_rate(const mp4ff_t *f, const int32_t track);
+uint32_t mp4ff_get_channel_count(const mp4ff_t * f,const int32_t track);
+uint32_t mp4ff_get_audio_type(const mp4ff_t * f,const int32_t track);
+
+
+/* metadata */
+int mp4ff_meta_get_num_items(const mp4ff_t *f);
+int mp4ff_meta_get_by_index(const mp4ff_t *f, unsigned int index,
+                            char **item, char **value);
+int mp4ff_meta_get_title(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_artist(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_writer(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_album(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_date(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_tool(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_comment(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_genre(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_track(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_disc(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_compilation(const mp4ff_t *f, char **value);
+int mp4ff_meta_get_tempo(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_coverart(const mp4ff_t *f, char **value);
+#ifdef USE_TAGGING
+
+/* metadata tag structure */
+typedef struct
+{
+    char *item;
+    char *value;
+} mp4ff_tag_t;
+
+/* metadata list structure */
+typedef struct
+{
+    mp4ff_tag_t *tags;
+    uint32_t count;
+} mp4ff_metadata_t;
+
+int32_t mp4ff_meta_update(mp4ff_callback_t *f,const mp4ff_metadata_t * data);
+
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif
\ No newline at end of file
diff --git a/src/mp4ff/mp4ff.vcproj b/src/mp4ff/mp4ff.vcproj
new file mode 100644
index 000000000..e697b96ca
--- /dev/null
+++ b/src/mp4ff/mp4ff.vcproj
@@ -0,0 +1,252 @@
+<?xml version="1.0" encoding="Windows-1252"?>

+<VisualStudioProject

+	ProjectType="Visual C++"

+	Version="7.10"

+	Name="mp4ff"

+	ProjectGUID="{F470BB4A-7675-4D6A-B310-41F33AC6F987}"

+	SccProjectName=""

+	SccLocalPath="">

+	<Platforms>

+		<Platform

+			Name="Win32"/>

+	</Platforms>

+	<Configurations>

+		<Configuration

+			Name="Release|Win32"

+			OutputDirectory=".\Release"

+			IntermediateDirectory=".\Release"

+			ConfigurationType="4"

+			UseOfMFC="0"

+			ATLMinimizesCRunTimeLibraryUsage="FALSE">

+			<Tool

+				Name="VCCLCompilerTool"

+				AdditionalOptions=""

+				Optimization="1"

+				InlineFunctionExpansion="1"

+				PreprocessorDefinitions="USE_TAGGING"

+				StringPooling="TRUE"

+				RuntimeLibrary="2"

+				EnableFunctionLevelLinking="TRUE"

+				UsePrecompiledHeader="2"

+				PrecompiledHeaderFile=".\Release/mp4ff.pch"

+				AssemblerListingLocation=".\Release/"

+				ObjectFile=".\Release/"

+				ProgramDataBaseFileName=".\Release/"

+				WarningLevel="3"

+				SuppressStartupBanner="TRUE"

+				Detect64BitPortabilityProblems="TRUE"/>

+			<Tool

+				Name="VCCustomBuildTool"/>

+			<Tool

+				Name="VCLibrarianTool"

+				AdditionalOptions=""

+				OutputFile=".\Release\mp4ff.lib"

+				SuppressStartupBanner="TRUE"/>

+			<Tool

+				Name="VCMIDLTool"/>

+			<Tool

+				Name="VCPostBuildEventTool"/>

+			<Tool

+				Name="VCPreBuildEventTool"/>

+			<Tool

+				Name="VCPreLinkEventTool"/>

+			<Tool

+				Name="VCResourceCompilerTool"

+				PreprocessorDefinitions="NDEBUG"

+				Culture="1043"/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"/>

+			<Tool

+				Name="VCManagedWrapperGeneratorTool"/>

+			<Tool

+				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>

+		</Configuration>

+		<Configuration

+			Name="Debug|Win32"

+			OutputDirectory=".\Debug"

+			IntermediateDirectory=".\Debug"

+			ConfigurationType="4"

+			UseOfMFC="0"

+			ATLMinimizesCRunTimeLibraryUsage="FALSE">

+			<Tool

+				Name="VCCLCompilerTool"

+				AdditionalOptions=""

+				Optimization="0"

+				PreprocessorDefinitions="USE_TAGGING"

+				BasicRuntimeChecks="3"

+				RuntimeLibrary="3"

+				UsePrecompiledHeader="2"

+				PrecompiledHeaderFile=".\Debug/mp4ff.pch"

+				AssemblerListingLocation=".\Debug/"

+				ObjectFile=".\Debug/"

+				ProgramDataBaseFileName=".\Debug/"

+				WarningLevel="3"

+				SuppressStartupBanner="TRUE"

+				DebugInformationFormat="4"/>

+			<Tool

+				Name="VCCustomBuildTool"/>

+			<Tool

+				Name="VCLibrarianTool"

+				AdditionalOptions=""

+				OutputFile=".\Debug\mp4ff.lib"

+				SuppressStartupBanner="TRUE"/>

+			<Tool

+				Name="VCMIDLTool"/>

+			<Tool

+				Name="VCPostBuildEventTool"/>

+			<Tool

+				Name="VCPreBuildEventTool"/>

+			<Tool

+				Name="VCPreLinkEventTool"/>

+			<Tool

+				Name="VCResourceCompilerTool"

+				PreprocessorDefinitions="_DEBUG"

+				Culture="1043"/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"/>

+			<Tool

+				Name="VCManagedWrapperGeneratorTool"/>

+			<Tool

+				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>

+		</Configuration>

+	</Configurations>

+	<References>

+	</References>

+	<Files>

+		<Filter

+			Name="Source Files"

+			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">

+			<File

+				RelativePath=".\drms.c">

+			</File>

+			<File

+				RelativePath="mp4atom.c">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						AdditionalOptions=""

+						Optimization="1"

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						AdditionalOptions=""

+						Optimization="0"

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="mp4ff.c">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						AdditionalOptions=""

+						Optimization="1"

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						AdditionalOptions=""

+						Optimization="0"

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="mp4meta.c">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						AdditionalOptions=""

+						Optimization="1"

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						AdditionalOptions=""

+						Optimization="0"

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="mp4sample.c">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						AdditionalOptions=""

+						Optimization="1"

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						AdditionalOptions=""

+						Optimization="0"

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath=".\mp4tagupdate.c">

+			</File>

+			<File

+				RelativePath="mp4util.c">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						AdditionalOptions=""

+						Optimization="1"

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						AdditionalOptions=""

+						Optimization="0"

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+		</Filter>

+		<Filter

+			Name="Header Files"

+			Filter="h;hpp;hxx;hm;inl">

+			<File

+				RelativePath=".\drms.h">

+			</File>

+			<File

+				RelativePath=".\drmstables.h">

+			</File>

+			<File

+				RelativePath=".\mp4ff.h">

+			</File>

+			<File

+				RelativePath=".\mp4ff_int_types.h">

+			</File>

+			<File

+				RelativePath="mp4ffint.h">

+			</File>

+		</Filter>

+	</Files>

+	<Globals>

+	</Globals>

+</VisualStudioProject>

diff --git a/src/mp4ff/mp4ff_int_types.h b/src/mp4ff/mp4ff_int_types.h
new file mode 100644
index 000000000..8dbf7bc2e
--- /dev/null
+++ b/src/mp4ff/mp4ff_int_types.h
@@ -0,0 +1,23 @@
+#ifndef _MP4FF_INT_TYPES_H_
+#define _MP4FF_INT_TYPES_H_
+
+#ifdef _WIN32
+
+typedef char int8_t;
+typedef unsigned char uint8_t;
+typedef short int16_t;
+typedef unsigned short uint16_t;
+typedef long int32_t;
+typedef unsigned long uint32_t;
+
+typedef __int64 int64_t;
+typedef unsigned __int64 uint64_t;
+
+#else
+
+#include <stdint.h>
+
+#endif
+
+
+#endif
diff --git a/src/mp4ff/mp4ffint.h b/src/mp4ff/mp4ffint.h
new file mode 100644
index 000000000..8ae85e79f
--- /dev/null
+++ b/src/mp4ff/mp4ffint.h
@@ -0,0 +1,329 @@
+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
+**
+** $Id: mp4ffint.h,v 1.15 2004/01/14 20:50:22 menno Exp $
+**/
+
+#ifndef MP4FF_INTERNAL_H
+#define MP4FF_INTERNAL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#include "mp4ff_int_types.h"
+
+
+#ifdef _WIN32
+#define ITUNES_DRM
+#endif
+
+
+#define MAX_TRACKS 1024
+#define TRACK_UNKNOWN 0
+#define TRACK_AUDIO   1
+#define TRACK_VIDEO   2
+#define TRACK_SYSTEM  3
+
+
+#define SUBATOMIC 128
+
+/* atoms without subatoms */
+#define ATOM_FTYP 129
+#define ATOM_MDAT 130
+#define ATOM_MVHD 131
+#define ATOM_TKHD 132
+#define ATOM_TREF 133
+#define ATOM_MDHD 134
+#define ATOM_VMHD 135
+#define ATOM_SMHD 136
+#define ATOM_HMHD 137
+#define ATOM_STSD 138
+#define ATOM_STTS 139
+#define ATOM_STSZ 140
+#define ATOM_STZ2 141
+#define ATOM_STCO 142
+#define ATOM_STSC 143
+#define ATOM_MP4A 144
+#define ATOM_MP4V 145
+#define ATOM_MP4S 146
+#define ATOM_ESDS 147
+#define ATOM_META 148 /* iTunes Metadata box */
+#define ATOM_NAME 149 /* iTunes Metadata name box */
+#define ATOM_DATA 150 /* iTunes Metadata data box */
+#define ATOM_CTTS 151
+#define ATOM_FRMA 152
+#define ATOM_IVIV 153
+#define ATOM_PRIV 154
+
+#define ATOM_UNKNOWN 255
+#define ATOM_FREE ATOM_UNKNOWN
+#define ATOM_SKIP ATOM_UNKNOWN
+
+/* atoms with subatoms */
+#define ATOM_MOOV 1
+#define ATOM_TRAK 2
+#define ATOM_EDTS 3
+#define ATOM_MDIA 4
+#define ATOM_MINF 5
+#define ATOM_STBL 6
+#define ATOM_UDTA 7
+#define ATOM_ILST 8 /* iTunes Metadata list */
+#define ATOM_TITLE 9
+#define ATOM_ARTIST 10
+#define ATOM_WRITER 11
+#define ATOM_ALBUM 12
+#define ATOM_DATE 13
+#define ATOM_TOOL 14
+#define ATOM_COMMENT 15
+#define ATOM_GENRE1 16
+#define ATOM_TRACK 17
+#define ATOM_DISC 18
+#define ATOM_COMPILATION 19
+#define ATOM_GENRE2 20
+#define ATOM_TEMPO 21
+#define ATOM_COVER 22
+#define ATOM_DRMS 23
+#define ATOM_SINF 24
+#define ATOM_SCHI 25
+
+#ifdef HAVE_CONFIG_H
+#include "../../config.h"
+#endif
+
+#ifndef _WIN32
+#define stricmp strcasecmp
+#endif
+
+/* file callback structure */
+typedef struct
+{
+    uint32_t (*read)(void *user_data, void *buffer, uint32_t length);
+    uint32_t (*write)(void *udata, void *buffer, uint32_t length);
+    uint32_t (*seek)(void *user_data, uint64_t position);
+	uint32_t (*truncate)(void *user_data);
+    void *user_data;
+} mp4ff_callback_t;
+
+
+/* metadata tag structure */
+typedef struct
+{
+    char *item;
+    char *value;
+} mp4ff_tag_t;
+
+/* metadata list structure */
+typedef struct
+{
+    mp4ff_tag_t *tags;
+    uint32_t count;
+} mp4ff_metadata_t;
+
+
+typedef struct
+{
+    int32_t type;
+    int32_t channelCount;
+    int32_t sampleSize;
+    uint16_t sampleRate;
+	int32_t audioType;
+
+    /* stsd */
+    int32_t stsd_entry_count;
+
+    /* stsz */
+	int32_t stsz_sample_size;
+	int32_t stsz_sample_count;
+    int32_t *stsz_table;
+
+    /* stts */
+	int32_t stts_entry_count;
+    int32_t *stts_sample_count;
+    int32_t *stts_sample_delta;
+
+    /* stsc */
+	int32_t stsc_entry_count;
+    int32_t *stsc_first_chunk;
+    int32_t *stsc_samples_per_chunk;
+    int32_t *stsc_sample_desc_index;
+
+    /* stsc */
+	int32_t stco_entry_count;
+    int32_t *stco_chunk_offset;
+
+	/* ctts */
+	int32_t ctts_entry_count;
+	int32_t *ctts_sample_count;
+	int32_t *ctts_sample_offset;
+
+    /* esde */
+    uint8_t *decoderConfig;
+    int32_t decoderConfigLen;
+
+	uint32_t maxBitrate;
+	uint32_t avgBitrate;
+	
+	uint32_t timeScale;
+	uint64_t duration;
+
+#ifdef ITUNES_DRM
+    /* drms */
+    void *p_drms;
+#endif
+
+} mp4ff_track_t;
+
+/* mp4 main file structure */
+typedef struct
+{
+    /* stream to read from */
+	mp4ff_callback_t *stream;
+    int64_t current_position;
+
+    int32_t moov_read;
+    uint64_t moov_offset;
+    uint64_t moov_size;
+    uint8_t last_atom;
+    uint64_t file_size;
+
+    /* mvhd */
+    int32_t time_scale;
+    int32_t duration;
+
+    /* incremental track index while reading the file */
+    int32_t total_tracks;
+
+    /* track data */
+    mp4ff_track_t *track[MAX_TRACKS];
+
+    /* metadata */
+    mp4ff_metadata_t tags;
+} mp4ff_t;
+
+
+
+
+/* mp4util.c */
+int32_t mp4ff_read_data(mp4ff_t *f, int8_t *data, uint32_t size);
+int32_t mp4ff_write_data(mp4ff_t *f, int8_t *data, uint32_t size);
+uint64_t mp4ff_read_int64(mp4ff_t *f);
+uint32_t mp4ff_read_int32(mp4ff_t *f);
+uint32_t mp4ff_read_int24(mp4ff_t *f);
+uint16_t mp4ff_read_int16(mp4ff_t *f);
+uint8_t mp4ff_read_char(mp4ff_t *f);
+int32_t mp4ff_write_int32(mp4ff_t *f,const uint32_t data);
+uint32_t mp4ff_read_mp4_descr_length(mp4ff_t *f);
+int64_t mp4ff_position(const mp4ff_t *f);
+int32_t mp4ff_set_position(mp4ff_t *f, const int64_t position);
+int32_t mp4ff_truncate(mp4ff_t * f);
+char * mp4ff_read_string(mp4ff_t * f,uint32_t length);
+
+/* mp4atom.c */
+static int32_t mp4ff_atom_get_size(const int8_t *data);
+static int32_t mp4ff_atom_compare(const int8_t a1, const int8_t b1, const int8_t c1, const int8_t d1,
+                                  const int8_t a2, const int8_t b2, const int8_t c2, const int8_t d2);
+static uint8_t mp4ff_atom_name_to_type(const int8_t a, const int8_t b, const int8_t c, const int8_t d);
+uint64_t mp4ff_atom_read_header(mp4ff_t *f, uint8_t *atom_type, uint8_t *header_size);
+static int32_t mp4ff_read_stsz(mp4ff_t *f);
+static int32_t mp4ff_read_esds(mp4ff_t *f);
+static int32_t mp4ff_read_mp4a(mp4ff_t *f);
+static int32_t mp4ff_read_stsd(mp4ff_t *f);
+static int32_t mp4ff_read_stsc(mp4ff_t *f);
+static int32_t mp4ff_read_stco(mp4ff_t *f);
+static int32_t mp4ff_read_stts(mp4ff_t *f);
+#ifdef USE_TAGGING
+static int32_t mp4ff_read_meta(mp4ff_t *f, const uint64_t size);
+#endif
+int32_t mp4ff_atom_read(mp4ff_t *f, const int32_t size, const uint8_t atom_type);
+
+/* mp4sample.c */
+static int32_t mp4ff_chunk_of_sample(const mp4ff_t *f, const int32_t track, const int32_t sample,
+                                     int32_t *chunk_sample, int32_t *chunk);
+static int32_t mp4ff_chunk_to_offset(const mp4ff_t *f, const int32_t track, const int32_t chunk);
+static int32_t mp4ff_sample_range_size(const mp4ff_t *f, const int32_t track,
+                                       const int32_t chunk_sample, const int32_t sample);
+static int32_t mp4ff_sample_to_offset(const mp4ff_t *f, const int32_t track, const int32_t sample);
+int32_t mp4ff_audio_frame_size(const mp4ff_t *f, const int32_t track, const int32_t sample);
+int32_t mp4ff_set_sample_position(mp4ff_t *f, const int32_t track, const int32_t sample);
+
+#ifdef USE_TAGGING
+/* mp4meta.c */
+static int32_t mp4ff_tag_add_field(mp4ff_metadata_t *tags, const char *item, const char *value);
+static int32_t mp4ff_tag_set_field(mp4ff_metadata_t *tags, const char *item, const char *value);
+static int32_t mp4ff_set_metadata_name(mp4ff_t *f, const uint8_t atom_type, char **name);
+static int32_t mp4ff_parse_tag(mp4ff_t *f, const uint8_t parent_atom_type, const int32_t size);
+static int32_t mp4ff_meta_find_by_name(const mp4ff_t *f, const char *item, char **value);
+int32_t mp4ff_parse_metadata(mp4ff_t *f, const int32_t size);
+int32_t mp4ff_tag_delete(mp4ff_metadata_t *tags);
+int32_t mp4ff_meta_get_num_items(const mp4ff_t *f);
+int32_t mp4ff_meta_get_by_index(const mp4ff_t *f, uint32_t index,
+                            char **item, char **value);
+int32_t mp4ff_meta_get_title(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_artist(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_writer(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_album(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_date(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_tool(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_comment(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_genre(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_track(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_disc(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_compilation(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_tempo(const mp4ff_t *f, char **value);
+int32_t mp4ff_meta_get_coverart(const mp4ff_t *f, char **value);
+#endif
+
+/* mp4ff.c */
+mp4ff_t *mp4ff_open_read(mp4ff_callback_t *f);
+#ifdef USE_TAGGING
+mp4ff_t *mp4ff_open_edit(mp4ff_callback_t *f);
+#endif
+void mp4ff_close(mp4ff_t *ff);
+/*void mp4ff_track_add(mp4ff_t *f);*/
+int32_t parse_sub_atoms(mp4ff_t *f, const uint64_t total_size);
+int32_t parse_atoms(mp4ff_t *f);
+
+int32_t mp4ff_get_sample_duration(const mp4ff_t *f, const int32_t track, const int32_t sample);
+int64_t mp4ff_get_sample_position(const mp4ff_t *f, const int32_t track, const int32_t sample);
+int32_t mp4ff_get_sample_offset(const mp4ff_t *f, const int32_t track, const int32_t sample);
+int32_t mp4ff_find_sample(const mp4ff_t *f, const int32_t track, const int64_t offset,int32_t * toskip);
+
+int32_t mp4ff_read_sample(mp4ff_t *f, const int32_t track, const int32_t sample,
+                          uint8_t **audio_buffer,  uint32_t *bytes);
+int32_t mp4ff_get_decoder_config(const mp4ff_t *f, const int32_t track,
+                                 uint8_t** ppBuf, uint32_t* pBufSize);
+int32_t mp4ff_total_tracks(const mp4ff_t *f);
+int32_t mp4ff_time_scale(const mp4ff_t *f, const int32_t track);
+int32_t mp4ff_num_samples(const mp4ff_t *f, const int32_t track);
+
+uint32_t mp4ff_meta_genre_to_index(const char * genrestr);//returns 1-based index, 0 if not found
+const char * mp4ff_meta_index_to_genre(uint32_t idx);//returns pointer to static string
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif
diff --git a/src/mp4ff/mp4meta.c b/src/mp4ff/mp4meta.c
new file mode 100644
index 000000000..762f5dee7
--- /dev/null
+++ b/src/mp4ff/mp4meta.c
@@ -0,0 +1,414 @@
+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
+**
+** $Id: mp4meta.c,v 1.13 2004/01/11 15:52:18 menno Exp $
+**/
+
+#ifdef USE_TAGGING
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "mp4ffint.h"
+
+static int32_t mp4ff_tag_add_field(mp4ff_metadata_t *tags, const char *item, const char *value)
+{
+    void *backup = (void *)tags->tags;
+
+    if (!item || (item && !*item) || !value) return 0;
+
+    tags->tags = (mp4ff_tag_t*)realloc(tags->tags, (tags->count+1) * sizeof(mp4ff_tag_t));
+    if (!tags->tags)
+    {
+        if (backup) free(backup);
+        return 0;
+    } else {
+        tags->tags[tags->count].item = strdup(item);
+        tags->tags[tags->count].value = strdup(value);
+
+        if (!tags->tags[tags->count].item || !tags->tags[tags->count].value)
+        {
+            if (!tags->tags[tags->count].item) free (tags->tags[tags->count].item);
+            if (!tags->tags[tags->count].value) free (tags->tags[tags->count].value);
+            tags->tags[tags->count].item = NULL;
+            tags->tags[tags->count].value = NULL;
+            return 0;
+        }
+
+        tags->count++;
+        return 1;
+    }
+}
+
+static int32_t mp4ff_tag_set_field(mp4ff_metadata_t *tags, const char *item, const char *value)
+{
+    unsigned int i;
+
+    if (!item || (item && !*item) || !value) return 0;
+
+    for (i = 0; i < tags->count; i++)
+    {
+        if (!stricmp(tags->tags[i].item, item))
+        {
+			free(tags->tags[i].value);
+			tags->tags[i].value = strdup(value);
+            return 1;
+        }
+    }
+
+    return mp4ff_tag_add_field(tags, item, value);
+}
+
+int32_t mp4ff_tag_delete(mp4ff_metadata_t *tags)
+{
+    uint32_t i;
+
+    for (i = 0; i < tags->count; i++)
+    {
+        if (tags->tags[i].item) free(tags->tags[i].item);
+        if (tags->tags[i].value) free(tags->tags[i].value);
+    }
+
+    if (tags->tags) free(tags->tags);
+
+    tags->tags = NULL;
+    tags->count = 0;
+
+    return 0;
+}
+
+static const char* ID3v1GenreList[] = {
+    "Blues", "Classic Rock", "Country", "Dance", "Disco", "Funk",
+    "Grunge", "Hip-Hop", "Jazz", "Metal", "New Age", "Oldies",
+    "Other", "Pop", "R&B", "Rap", "Reggae", "Rock",
+    "Techno", "Industrial", "Alternative", "Ska", "Death Metal", "Pranks",
+    "Soundtrack", "Euro-Techno", "Ambient", "Trip-Hop", "Vocal", "Jazz+Funk",
+    "Fusion", "Trance", "Classical", "Instrumental", "Acid", "House",
+    "Game", "Sound Clip", "Gospel", "Noise", "AlternRock", "Bass",
+    "Soul", "Punk", "Space", "Meditative", "Instrumental Pop", "Instrumental Rock",
+    "Ethnic", "Gothic", "Darkwave", "Techno-Industrial", "Electronic", "Pop-Folk",
+    "Eurodance", "Dream", "Southern Rock", "Comedy", "Cult", "Gangsta",
+    "Top 40", "Christian Rap", "Pop/Funk", "Jungle", "Native American", "Cabaret",
+    "New Wave", "Psychadelic", "Rave", "Showtunes", "Trailer", "Lo-Fi",
+    "Tribal", "Acid Punk", "Acid Jazz", "Polka", "Retro", "Musical",
+    "Rock & Roll", "Hard Rock", "Folk", "Folk/Rock", "National Folk", "Swing",
+    "Fast-Fusion", "Bebob", "Latin", "Revival", "Celtic", "Bluegrass", "Avantgarde",
+    "Gothic Rock", "Progressive Rock", "Psychedelic Rock", "Symphonic Rock", "Slow Rock", "Big Band",
+    "Chorus", "Easy Listening", "Acoustic", "Humour", "Speech", "Chanson",
+    "Opera", "Chamber Music", "Sonata", "Symphony", "Booty Bass", "Primus",
+    "Porn Groove", "Satire", "Slow Jam", "Club", "Tango", "Samba",
+    "Folklore", "Ballad", "Power Ballad", "Rhythmic Soul", "Freestyle", "Duet",
+    "Punk Rock", "Drum Solo", "A capella", "Euro-House", "Dance Hall",
+    "Goa", "Drum & Bass", "Club House", "Hardcore", "Terror",
+    "Indie", "BritPop", "NegerPunk", "Polsk Punk", "Beat",
+    "Christian Gangsta", "Heavy Metal", "Black Metal", "Crossover", "Contemporary C",
+    "Christian Rock", "Merengue", "Salsa", "Thrash Metal", "Anime", "JPop",
+    "SynthPop",
+};
+
+uint32_t mp4ff_meta_genre_to_index(const char * genrestr)
+{
+	unsigned n;
+	for(n=0;n<sizeof(ID3v1GenreList)/sizeof(ID3v1GenreList[0]);n++)
+	{
+		if (!stricmp(genrestr,ID3v1GenreList[n])) return n+1;
+	}
+	return 0;
+}
+
+const char * mp4ff_meta_index_to_genre(uint32_t idx)
+{
+	if (idx>0 && idx<=sizeof(ID3v1GenreList)/sizeof(ID3v1GenreList[0]))
+	{
+		return ID3v1GenreList[idx-1];
+	}
+	else
+	{
+		return 0;
+	}
+}
+
+
+static int32_t TrackToString(char** str, const uint16_t track, const uint16_t totalTracks)
+{
+	char temp[32];
+    sprintf(temp, "%.5u of %.5u", track, totalTracks);
+	*str = strdup(temp);
+    return 0;
+}
+
+static int32_t mp4ff_set_metadata_name(mp4ff_t *f, const uint8_t atom_type, char **name)
+{
+    static char *tag_names[] = {
+        "unknown", "title", "artist", "writer", "album",
+        "date", "tool", "comment", "genre", "track",
+        "disc", "compilation", "genre", "tempo", "cover"
+    };
+    uint8_t tag_idx = 0;
+
+    switch (atom_type)
+    {
+    case ATOM_TITLE: tag_idx = 1; break;
+    case ATOM_ARTIST: tag_idx = 2; break;
+    case ATOM_WRITER: tag_idx = 3; break;
+    case ATOM_ALBUM: tag_idx = 4; break;
+    case ATOM_DATE: tag_idx = 5; break;
+    case ATOM_TOOL: tag_idx = 6; break;
+    case ATOM_COMMENT: tag_idx = 7; break;
+    case ATOM_GENRE1: tag_idx = 8; break;
+    case ATOM_TRACK: tag_idx = 9; break;
+    case ATOM_DISC: tag_idx = 10; break;
+    case ATOM_COMPILATION: tag_idx = 11; break;
+    case ATOM_GENRE2: tag_idx = 12; break;
+    case ATOM_TEMPO: tag_idx = 13; break;
+    case ATOM_COVER: tag_idx = 14; break;
+    default: tag_idx = 0; break;
+    }
+
+	*name = strdup(tag_names[tag_idx]);
+
+    return 0;
+}
+
+static int32_t mp4ff_parse_tag(mp4ff_t *f, const uint8_t parent_atom_type, const int32_t size)
+{
+    uint8_t atom_type;
+    uint8_t header_size = 0;
+    uint64_t subsize, sumsize = 0;
+    char * name = NULL;
+	char * data = NULL;
+	uint32_t done = 0;
+
+
+    while (sumsize < size)
+    {
+		uint64_t destpos;
+        subsize = mp4ff_atom_read_header(f, &atom_type, &header_size);
+		destpos = mp4ff_position(f)+subsize-header_size;
+		if (!done)
+		{
+			if (atom_type == ATOM_DATA)
+			{
+				mp4ff_read_char(f); /* version */
+				mp4ff_read_int24(f); /* flags */
+				mp4ff_read_int32(f); /* reserved */
+
+				/* some need special attention */
+				if (parent_atom_type == ATOM_GENRE2 || parent_atom_type == ATOM_TEMPO)
+				{
+					if (subsize - header_size >= 8 + 2)
+					{
+						uint16_t val = mp4ff_read_int16(f);
+
+						if (parent_atom_type == ATOM_TEMPO)
+						{
+							char temp[16];
+							sprintf(temp, "%.5u BPM", val);
+							mp4ff_tag_add_field(&(f->tags), "tempo", temp);
+						}
+						else
+						{
+							const char * temp = mp4ff_meta_index_to_genre(val);
+							if (temp)
+							{
+								mp4ff_tag_add_field(&(f->tags), "genre", temp);
+							}
+						}
+						done = 1;
+					}
+				} else if (parent_atom_type == ATOM_TRACK || parent_atom_type == ATOM_DISC) {
+					if (!done && subsize - header_size >= 8 + 8)
+					{
+						uint16_t index,total;
+						char temp[32];
+						mp4ff_read_int16(f);
+						index = mp4ff_read_int16(f);
+						total = mp4ff_read_int16(f);
+						mp4ff_read_int16(f);
+
+						sprintf(temp,"%d",index);
+						mp4ff_tag_add_field(&(f->tags), parent_atom_type == ATOM_TRACK ? "track" : "disc", temp);
+						if (total>0)
+						{
+							sprintf(temp,"%d",total);
+							mp4ff_tag_add_field(&(f->tags), parent_atom_type == ATOM_TRACK ? "totaltracks" : "totaldiscs", temp);
+						}
+						done = 1;
+					}
+				} else
+				{
+					if (data) {free(data);data = NULL;}
+					data = mp4ff_read_string(f,(uint32_t)(subsize-(header_size+8)));
+				}
+			} else if (atom_type == ATOM_NAME) {
+				if (!done)
+				{
+					mp4ff_read_char(f); /* version */
+					mp4ff_read_int24(f); /* flags */
+					if (name) free(name);
+					name = mp4ff_read_string(f,(uint32_t)(subsize-(header_size+4)));
+				}
+			}
+			mp4ff_set_position(f, destpos);
+			sumsize += subsize;
+		}
+    }
+
+	if (data)
+	{
+		if (!done)
+		{
+			if (name == NULL) mp4ff_set_metadata_name(f, parent_atom_type, &name);
+			if (name) mp4ff_tag_add_field(&(f->tags), name, data);
+		}
+
+		free(data);
+	}
+	if (name) free(name);
+    return 1;
+}
+
+int32_t mp4ff_parse_metadata(mp4ff_t *f, const int32_t size)
+{
+    uint64_t subsize, sumsize = 0;
+    uint8_t atom_type;
+    uint8_t header_size = 0;
+
+    while (sumsize < size)
+    {
+        subsize = mp4ff_atom_read_header(f, &atom_type, &header_size);
+        mp4ff_parse_tag(f, atom_type, (uint32_t)(subsize-header_size));
+        sumsize += subsize;
+    }
+
+    return 0;
+}
+
+/* find a metadata item by name */
+/* returns 0 if item found, 1 if no such item */
+static int32_t mp4ff_meta_find_by_name(const mp4ff_t *f, const char *item, char **value)
+{
+    uint32_t i;
+
+    for (i = 0; i < f->tags.count; i++)
+    {
+        if (!stricmp(f->tags.tags[i].item, item))
+        {
+			*value = strdup(f->tags.tags[i].value);
+            return 1;
+        }
+    }
+
+    *value = NULL;
+
+    /* not found */
+    return 0;
+}
+
+int32_t mp4ff_meta_get_num_items(const mp4ff_t *f)
+{
+    return f->tags.count;
+}
+
+int32_t mp4ff_meta_get_by_index(const mp4ff_t *f, uint32_t index,
+                                char **item, char **value)
+{
+    if (index >= f->tags.count)
+    {
+        *item = NULL;
+        *value = NULL;
+        return 0;
+    } else {
+		*item = strdup(f->tags.tags[index].item);
+		*value = strdup(f->tags.tags[index].value);
+		return 1;
+    }
+}
+
+int32_t mp4ff_meta_get_title(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "title", value);
+}
+
+int32_t mp4ff_meta_get_artist(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "artist", value);
+}
+
+int32_t mp4ff_meta_get_writer(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "writer", value);
+}
+
+int32_t mp4ff_meta_get_album(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "album", value);
+}
+
+int32_t mp4ff_meta_get_date(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "date", value);
+}
+
+int32_t mp4ff_meta_get_tool(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "tool", value);
+}
+
+int32_t mp4ff_meta_get_comment(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "comment", value);
+}
+
+int32_t mp4ff_meta_get_genre(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "genre", value);
+}
+
+int32_t mp4ff_meta_get_track(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "track", value);
+}
+
+int32_t mp4ff_meta_get_disc(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "disc", value);
+}
+
+int32_t mp4ff_meta_get_compilation(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "compilation", value);
+}
+
+int32_t mp4ff_meta_get_tempo(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "tempo", value);
+}
+
+int32_t mp4ff_meta_get_coverart(const mp4ff_t *f, char **value)
+{
+    return mp4ff_meta_find_by_name(f, "cover", value);
+}
+
+#endif
diff --git a/src/mp4ff/mp4sample.c b/src/mp4ff/mp4sample.c
new file mode 100644
index 000000000..5688a3a8f
--- /dev/null
+++ b/src/mp4ff/mp4sample.c
@@ -0,0 +1,152 @@
+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
+**
+** $Id: mp4sample.c,v 1.15 2004/01/11 15:52:19 menno Exp $
+**/
+
+#include <stdlib.h>
+#include "mp4ffint.h"
+
+
+static int32_t mp4ff_chunk_of_sample(const mp4ff_t *f, const int32_t track, const int32_t sample,
+                                     int32_t *chunk_sample, int32_t *chunk)
+{
+    int32_t total_entries = 0;
+    int32_t chunk2entry;
+    int32_t chunk1, chunk2, chunk1samples, range_samples, total = 0;
+
+    if (f->track[track] == NULL)
+    {
+        return -1;
+    }
+
+    total_entries = f->track[track]->stsc_entry_count;
+
+    chunk1 = 1;
+    chunk1samples = 0;
+    chunk2entry = 0;
+
+    do
+    {
+        chunk2 = f->track[track]->stsc_first_chunk[chunk2entry];
+        *chunk = chunk2 - chunk1;
+        range_samples = *chunk * chunk1samples;
+
+        if (sample < total + range_samples) break;
+
+        chunk1samples = f->track[track]->stsc_samples_per_chunk[chunk2entry];
+        chunk1 = chunk2;
+
+        if(chunk2entry < total_entries)
+        {
+            chunk2entry++;
+            total += range_samples;
+        }
+    } while (chunk2entry < total_entries);
+
+    if (chunk1samples)
+        *chunk = (sample - total) / chunk1samples + chunk1;
+    else
+        *chunk = 1;
+
+    *chunk_sample = total + (*chunk - chunk1) * chunk1samples;
+
+    return 0;
+}
+
+static int32_t mp4ff_chunk_to_offset(const mp4ff_t *f, const int32_t track, const int32_t chunk)
+{
+    const mp4ff_track_t * p_track = f->track[track];
+
+    if (p_track->stco_entry_count && (chunk > p_track->stco_entry_count))
+    {
+        return p_track->stco_chunk_offset[p_track->stco_entry_count - 1];
+    } else if (p_track->stco_entry_count) {
+        return p_track->stco_chunk_offset[chunk - 1];
+    } else {
+        return 8;
+    }
+
+    return 0;
+}
+
+static int32_t mp4ff_sample_range_size(const mp4ff_t *f, const int32_t track,
+                                       const int32_t chunk_sample, const int32_t sample)
+{
+    int32_t i, total;
+    const mp4ff_track_t * p_track = f->track[track];
+
+    if (p_track->stsz_sample_size)
+    {
+        return (sample - chunk_sample) * p_track->stsz_sample_size;
+    }
+    else
+    {
+        if (sample>=p_track->stsz_sample_count) return 0;//error
+
+        for(i = chunk_sample, total = 0; i < sample; i++)
+        {
+            total += p_track->stsz_table[i];
+        }
+    }
+
+    return total;
+}
+
+static int32_t mp4ff_sample_to_offset(const mp4ff_t *f, const int32_t track, const int32_t sample)
+{
+    int32_t chunk, chunk_sample, chunk_offset1, chunk_offset2;
+
+    mp4ff_chunk_of_sample(f, track, sample, &chunk_sample, &chunk);
+
+    chunk_offset1 = mp4ff_chunk_to_offset(f, track, chunk);
+    chunk_offset2 = chunk_offset1 + mp4ff_sample_range_size(f, track, chunk_sample, sample);
+
+    return chunk_offset2;
+}
+
+int32_t mp4ff_audio_frame_size(const mp4ff_t *f, const int32_t track, const int32_t sample)
+{
+    int32_t bytes;
+    const mp4ff_track_t * p_track = f->track[track];
+
+    if (p_track->stsz_sample_size)
+    {
+        bytes = p_track->stsz_sample_size;
+    } else {
+        bytes = p_track->stsz_table[sample];
+    }
+
+    return bytes;
+}
+
+int32_t mp4ff_set_sample_position(mp4ff_t *f, const int32_t track, const int32_t sample)
+{
+    int32_t offset;
+
+    offset = mp4ff_sample_to_offset(f, track, sample);
+    mp4ff_set_position(f, offset);
+
+    return 0;
+}
diff --git a/src/mp4ff/mp4tagupdate.c b/src/mp4ff/mp4tagupdate.c
new file mode 100644
index 000000000..be2d7084b
--- /dev/null
+++ b/src/mp4ff/mp4tagupdate.c
@@ -0,0 +1,645 @@
+#include <stdlib.h>
+#include <string.h>
+#include "mp4ffint.h"
+
+#ifdef USE_TAGGING
+
+static uint32_t fix_byte_order_32(uint32_t src)
+{
+    uint32_t result;
+    uint32_t a, b, c, d;
+    int8_t data[4];
+    
+    memcpy(data,&src,sizeof(src));
+    a = (uint8_t)data[0];
+    b = (uint8_t)data[1];
+    c = (uint8_t)data[2];
+    d = (uint8_t)data[3];
+
+    result = (a<<24) | (b<<16) | (c<<8) | d;
+    return (uint32_t)result;
+}
+
+static uint16_t fix_byte_order_16(uint16_t src)
+{
+    uint16_t result;
+    uint16_t a, b;
+    int8_t data[2];
+    
+    memcpy(data,&src,sizeof(src));
+    a = (uint8_t)data[0];
+    b = (uint8_t)data[1];
+
+    result = (a<<8) | b;
+    return (uint16_t)result;
+}
+
+
+typedef struct
+{
+	void * data;
+	unsigned written;
+	unsigned allocated;
+	unsigned error;
+} membuffer;
+
+unsigned membuffer_write(membuffer * buf,const void * ptr,unsigned bytes)
+{
+	unsigned dest_size = buf->written + bytes;
+
+	if (buf->error) return 0;
+	if (dest_size > buf->allocated)
+	{
+		do
+		{
+			buf->allocated <<= 1;
+		} while(dest_size > buf->allocated);
+		
+		{
+			void * newptr = realloc(buf->data,buf->allocated);
+			if (newptr==0)
+			{
+				free(buf->data);
+				buf->data = 0;
+				buf->error = 1;
+				return 0;
+			}
+			buf->data = newptr;
+		}
+	}
+
+	if (ptr) memcpy((char*)buf->data + buf->written,ptr,bytes);
+	buf->written += bytes;
+	return bytes;
+}
+
+#define membuffer_write_data membuffer_write
+
+unsigned membuffer_write_int32(membuffer * buf,uint32_t data)
+{
+	uint8_t temp[4] = {(uint8_t)(data>>24),(uint8_t)(data>>16),(uint8_t)(data>>8),(uint8_t)data};	
+	return membuffer_write_data(buf,temp,4);
+}
+
+unsigned membuffer_write_int24(membuffer * buf,uint32_t data)
+{
+	uint8_t temp[3] = {(uint8_t)(data>>16),(uint8_t)(data>>8),(uint8_t)data};
+	return membuffer_write_data(buf,temp,3);
+}
+
+unsigned membuffer_write_int16(membuffer * buf,uint16_t data)
+{
+	uint8_t temp[2] = {(uint8_t)(data>>8),(uint8_t)data};
+	return membuffer_write_data(buf,temp,2);
+}
+
+unsigned membuffer_write_atom_name(membuffer * buf,const char * data)
+{
+	return membuffer_write_data(buf,data,4)==4 ? 1 : 0;
+}
+
+void membuffer_write_atom(membuffer * buf,const char * name,unsigned size,const void * data)
+{
+	membuffer_write_int32(buf,size + 8);
+	membuffer_write_atom_name(buf,name);
+	membuffer_write_data(buf,data,size);
+}
+
+unsigned membuffer_write_string(membuffer * buf,const char * data)
+{
+	return membuffer_write_data(buf,data,strlen(data));
+}
+
+unsigned membuffer_write_int8(membuffer * buf,uint8_t data)
+{
+	return membuffer_write_data(buf,&data,1);
+}
+
+void * membuffer_get_ptr(const membuffer * buf)
+{
+	return buf->data;
+}
+
+unsigned membuffer_get_size(const membuffer * buf)
+{
+	return buf->written;
+}
+
+unsigned membuffer_error(const membuffer * buf)
+{
+	return buf->error;
+}
+
+void membuffer_set_error(membuffer * buf) {buf->error = 1;}
+
+unsigned membuffer_transfer_from_file(membuffer * buf,mp4ff_t * src,unsigned bytes)
+{
+	unsigned oldsize;
+	void * bufptr;
+	
+	oldsize = membuffer_get_size(buf);
+	if (membuffer_write_data(buf,0,bytes) != bytes) return 0;
+
+	bufptr = membuffer_get_ptr(buf);
+	if (bufptr==0) return 0;
+	
+	if ((unsigned)mp4ff_read_data(src,(char*)bufptr + oldsize,bytes)!=bytes)
+	{
+		membuffer_set_error(buf);
+		return 0;
+	}
+	
+	return bytes;
+}
+
+
+membuffer * membuffer_create()
+{
+	const unsigned initial_size = 256;
+
+	membuffer * buf = (membuffer *) malloc(sizeof(membuffer));
+	buf->data = malloc(initial_size);
+	buf->written = 0;
+	buf->allocated = initial_size;
+	buf->error = buf->data == 0 ? 1 : 0;
+
+	return buf;
+}
+
+void membuffer_free(membuffer * buf)
+{
+	if (buf->data) free(buf->data);
+	free(buf);
+}
+
+void * membuffer_detach(membuffer * buf)
+{
+	void * ret;
+
+	if (buf->error) return 0;
+
+	ret = realloc(buf->data,buf->written);
+	
+	if (ret == 0) free(buf->data);
+
+	buf->data = 0;
+	buf->error = 1;
+	
+	return ret;
+}
+
+#if 0
+/* metadata tag structure */
+typedef struct
+{
+    char *item;
+    char *value;
+} mp4ff_tag_t;
+
+/* metadata list structure */
+typedef struct
+{
+    mp4ff_tag_t *tags;
+    uint32_t count;
+} mp4ff_metadata_t;
+#endif
+
+typedef struct
+{
+	const char * atom;
+	const char * name;	
+} stdmeta_entry;
+
+static stdmeta_entry stdmetas[] = 
+{
+	{"©nam","title"},
+	{"©ART","artist"},
+	{"©wrt","writer"},
+	{"©alb","album"},
+	{"©day","date"},
+	{"©too","tool"},
+	{"©cmt","comment"},
+//	{"©gen","genre"},
+	{"cpil","compilation"},
+//	{"trkn","track"},
+//	{"disk","disc"},
+//	{"gnre","genre"},
+	{"covr","cover"},
+};
+
+
+static const char* find_standard_meta(const char * name) //returns atom name if found, 0 if not
+{
+	unsigned n;
+	for(n=0;n<sizeof(stdmetas)/sizeof(stdmetas[0]);n++)
+	{
+		if (!stricmp(name,stdmetas[n].name)) return stdmetas[n].atom;
+	}
+    return 0;
+}
+
+static void membuffer_write_track_tag(membuffer * buf,const char * name,uint32_t index,uint32_t total)
+{
+	membuffer_write_int32(buf,8 /*atom header*/ + 8 /*data atom header*/ + 8 /*flags + reserved*/ + 8 /*actual data*/ );
+	membuffer_write_atom_name(buf,name);
+	membuffer_write_int32(buf,8 /*data atom header*/ + 8 /*flags + reserved*/ + 8 /*actual data*/ );
+	membuffer_write_atom_name(buf,"data");
+	membuffer_write_int32(buf,0);//flags
+	membuffer_write_int32(buf,0);//reserved
+	membuffer_write_int16(buf,0);
+	membuffer_write_int16(buf,(uint16_t)index);//track number
+	membuffer_write_int16(buf,(uint16_t)total);//total tracks
+	membuffer_write_int16(buf,0);
+}
+
+static void membuffer_write_int16_tag(membuffer * buf,const char * name,uint16_t value)
+{
+	membuffer_write_int32(buf,8 /*atom header*/ + 8 /*data atom header*/ + 8 /*flags + reserved*/ + 2 /*actual data*/ );
+	membuffer_write_atom_name(buf,name);
+	membuffer_write_int32(buf,8 /*data atom header*/ + 8 /*flags + reserved*/ + 2 /*actual data*/ );
+	membuffer_write_atom_name(buf,"data");
+	membuffer_write_int32(buf,0);//flags
+	membuffer_write_int32(buf,0);//reserved
+	membuffer_write_int16(buf,value);//value
+}
+
+static void membuffer_write_std_tag(membuffer * buf,const char * name,const char * value)
+{
+	membuffer_write_int32(buf,8 /*atom header*/ + 8 /*data atom header*/ + 8 /*flags + reserved*/ + strlen(value) );
+	membuffer_write_atom_name(buf,name);
+	membuffer_write_int32(buf,8 /*data atom header*/ + 8 /*flags + reserved*/ + strlen(value));
+	membuffer_write_atom_name(buf,"data");
+	membuffer_write_int32(buf,1);//flags
+	membuffer_write_int32(buf,0);//reserved
+	membuffer_write_data(buf,value,strlen(value));
+}
+
+static void membuffer_write_custom_tag(membuffer * buf,const char * name,const char * value)
+{
+	membuffer_write_int32(buf,8 /*atom header*/ + 0x1C /*weirdo itunes atom*/ + 12 /*name atom header*/ + strlen(name) + 16 /*data atom header + flags*/ + strlen(value) );
+	membuffer_write_atom_name(buf,"----");
+	membuffer_write_int32(buf,0x1C);//weirdo itunes atom
+	membuffer_write_atom_name(buf,"mean");
+	membuffer_write_int32(buf,0);
+	membuffer_write_data(buf,"com.apple.iTunes",16);
+	membuffer_write_int32(buf,12 + strlen(name));
+	membuffer_write_atom_name(buf,"name");
+	membuffer_write_int32(buf,0);
+	membuffer_write_data(buf,name,strlen(name));
+	membuffer_write_int32(buf,8 /*data atom header*/ + 8 /*flags + reserved*/ + strlen(value));
+	membuffer_write_atom_name(buf,"data");
+	membuffer_write_int32(buf,1);//flags
+	membuffer_write_int32(buf,0);//reserved
+	membuffer_write_data(buf,value,strlen(value));
+
+}
+
+static uint32_t myatoi(const char * param)
+{
+	return param ? atoi(param) : 0;
+}
+
+static uint32_t create_ilst(const mp4ff_metadata_t * data,void ** out_buffer,uint32_t * out_size)
+{
+	membuffer * buf = membuffer_create();
+	unsigned metaptr;
+	char * mask = (char*)malloc(data->count);
+	memset(mask,0,data->count);
+
+	{
+		const char * tracknumber_ptr = 0, * totaltracks_ptr = 0;
+		const char * discnumber_ptr = 0, * totaldiscs_ptr = 0;
+		const char * genre_ptr = 0, * tempo_ptr = 0;
+		for(metaptr = 0; metaptr < data->count; metaptr++)
+		{
+			mp4ff_tag_t * tag = &data->tags[metaptr];
+			if (!stricmp(tag->item,"tracknumber") || !stricmp(tag->item,"track"))
+			{
+				if (tracknumber_ptr==0) tracknumber_ptr = tag->value;
+				mask[metaptr] = 1;
+			}
+			else if (!stricmp(tag->item,"totaltracks"))
+			{
+				if (totaltracks_ptr==0) totaltracks_ptr = tag->value;
+				mask[metaptr] = 1;
+			}
+			else if (!stricmp(tag->item,"discnumber") || !stricmp(tag->item,"disc"))
+			{
+				if (discnumber_ptr==0) discnumber_ptr = tag->value;
+				mask[metaptr] = 1;
+			}
+			else if (!stricmp(tag->item,"totaldiscs"))
+			{
+				if (totaldiscs_ptr==0) totaldiscs_ptr = tag->value;
+				mask[metaptr] = 1;
+			}
+			else if (!stricmp(tag->item,"genre"))
+			{
+				if (genre_ptr==0) genre_ptr = tag->value;
+				mask[metaptr] = 1;
+			}
+			else if (!stricmp(tag->item,"tempo"))
+			{
+				if (tempo_ptr==0) tempo_ptr = tag->value;
+				mask[metaptr] = 1;
+			}
+
+		}
+
+		if (tracknumber_ptr) membuffer_write_track_tag(buf,"trkn",myatoi(tracknumber_ptr),myatoi(totaltracks_ptr));
+		if (discnumber_ptr) membuffer_write_track_tag(buf,"disk",myatoi(discnumber_ptr),myatoi(totaldiscs_ptr));
+		if (tempo_ptr) membuffer_write_int16_tag(buf,"tmpo",(uint16_t)myatoi(tempo_ptr));
+
+		if (genre_ptr)
+		{
+			uint32_t index = mp4ff_meta_genre_to_index(genre_ptr);
+			if (index==0)
+				membuffer_write_std_tag(buf,"©gen",genre_ptr);
+			else
+				membuffer_write_int16_tag(buf,"gnre",(uint16_t)index);
+		}
+	}
+	
+	for(metaptr = 0; metaptr < data->count; metaptr++)
+	{
+		if (!mask[metaptr])
+		{
+			mp4ff_tag_t * tag = &data->tags[metaptr];
+			const char * std_meta_atom = find_standard_meta(tag->item);
+			if (std_meta_atom)
+			{
+				membuffer_write_std_tag(buf,std_meta_atom,tag->value);
+			}
+			else
+			{
+				membuffer_write_custom_tag(buf,tag->item,tag->value);
+			}
+		}
+	}
+
+	free(mask);
+
+	if (membuffer_error(buf))
+	{
+		membuffer_free(buf);
+		return 0;
+	}
+
+	*out_size = membuffer_get_size(buf);
+	*out_buffer = membuffer_detach(buf);
+	membuffer_free(buf);
+
+	return 1;
+}
+
+static uint32_t find_atom(mp4ff_t * f,uint64_t base,uint32_t size,const char * name)
+{
+	uint32_t remaining = size;
+	uint64_t atom_offset = base;
+	for(;;)
+	{
+		char atom_name[4];
+		uint32_t atom_size;
+
+		mp4ff_set_position(f,atom_offset);
+		
+		if (remaining < 8) break;
+		atom_size = mp4ff_read_int32(f);
+		if (atom_size > remaining || atom_size < 8) break;
+		mp4ff_read_data(f,atom_name,4);
+		
+		if (!memcmp(atom_name,name,4))
+		{
+			mp4ff_set_position(f,atom_offset);
+			return 1;
+		}
+		
+		remaining -= atom_size;
+		atom_offset += atom_size;
+	}
+	return 0;
+}
+
+static uint32_t find_atom_v2(mp4ff_t * f,uint64_t base,uint32_t size,const char * name,uint32_t extraheaders,const char * name_inside)
+{
+	uint64_t first_base = (uint64_t)(-1);
+	while(find_atom(f,base,size,name))//try to find atom <name> with atom <name_inside> in it
+	{
+		uint64_t mybase = mp4ff_position(f);
+		uint32_t mysize = mp4ff_read_int32(f);
+
+		if (first_base == (uint64_t)(-1)) first_base = mybase;
+
+		if (mysize < 8 + extraheaders) break;
+
+		if (find_atom(f,mybase+(8+extraheaders),mysize-(8+extraheaders),name_inside))
+		{
+			mp4ff_set_position(f,mybase);
+			return 2;
+		}
+		base += mysize;
+		if (size<=mysize) {size=0;break;}
+		size -= mysize;
+	}
+
+	if (first_base != (uint64_t)(-1))//wanted atom inside not found
+	{
+		mp4ff_set_position(f,first_base);
+		return 1;
+	}
+	else return 0;	
+}
+
+static uint32_t create_meta(const mp4ff_metadata_t * data,void ** out_buffer,uint32_t * out_size)
+{
+	membuffer * buf;
+	uint32_t ilst_size;
+	void * ilst_buffer;
+
+	if (!create_ilst(data,&ilst_buffer,&ilst_size)) return 0;
+
+	buf = membuffer_create();
+
+	membuffer_write_int32(buf,0);
+	membuffer_write_atom(buf,"ilst",ilst_size,ilst_buffer);
+	free(ilst_buffer);
+
+	*out_size = membuffer_get_size(buf);
+	*out_buffer = membuffer_detach(buf);
+	membuffer_free(buf);
+	return 1;
+}
+
+static uint32_t create_udta(const mp4ff_metadata_t * data,void ** out_buffer,uint32_t * out_size)
+{
+	membuffer * buf;
+	uint32_t meta_size;
+	void * meta_buffer;
+
+	if (!create_meta(data,&meta_buffer,&meta_size)) return 0;
+
+	buf = membuffer_create();
+
+	membuffer_write_atom(buf,"meta",meta_size,meta_buffer);
+
+	free(meta_buffer);
+
+	*out_size = membuffer_get_size(buf);
+	*out_buffer = membuffer_detach(buf);
+	membuffer_free(buf);
+	return 1;
+}
+
+static uint32_t modify_moov(mp4ff_t * f,const mp4ff_metadata_t * data,void ** out_buffer,uint32_t * out_size)
+{
+	uint64_t total_base = f->moov_offset + 8;
+	uint32_t total_size = (uint32_t)(f->moov_size - 8);
+
+	uint64_t udta_offset,meta_offset,ilst_offset;
+	uint32_t udta_size,  meta_size,  ilst_size;
+	
+	uint32_t new_ilst_size;
+	void * new_ilst_buffer;
+	
+	uint8_t * p_out;
+	int32_t size_delta;
+	
+	
+	if (!find_atom_v2(f,total_base,total_size,"udta",0,"meta"))
+	{
+		membuffer * buf;
+		void * new_udta_buffer;
+		uint32_t new_udta_size;
+		if (!create_udta(data,&new_udta_buffer,&new_udta_size)) return 0;
+		
+		buf = membuffer_create();
+		mp4ff_set_position(f,total_base);
+		membuffer_transfer_from_file(buf,f,total_size);
+		
+		membuffer_write_atom(buf,"udta",new_udta_size,new_udta_buffer);
+
+		free(new_udta_buffer);
+	
+		*out_size = membuffer_get_size(buf);
+		*out_buffer = membuffer_detach(buf);
+		membuffer_free(buf);
+		return 1;		
+	}
+	else
+	{
+		udta_offset = mp4ff_position(f);
+		udta_size = mp4ff_read_int32(f);
+		if (find_atom_v2(f,udta_offset+8,udta_size-8,"meta",4,"ilst")<2)
+		{
+			membuffer * buf;
+			void * new_meta_buffer;
+			uint32_t new_meta_size;
+			if (!create_meta(data,&new_meta_buffer,&new_meta_size)) return 0;
+			
+			buf = membuffer_create();
+			mp4ff_set_position(f,total_base);
+			membuffer_transfer_from_file(buf,f,(uint32_t)(udta_offset - total_base));
+			
+			membuffer_write_int32(buf,udta_size + 8 + new_meta_size);
+			membuffer_write_atom_name(buf,"udta");
+			membuffer_transfer_from_file(buf,f,udta_size);
+						
+			membuffer_write_atom(buf,"meta",new_meta_size,new_meta_buffer);
+			free(new_meta_buffer);
+		
+			*out_size = membuffer_get_size(buf);
+			*out_buffer = membuffer_detach(buf);
+			membuffer_free(buf);
+			return 1;		
+		}
+		meta_offset = mp4ff_position(f);
+		meta_size = mp4ff_read_int32(f);
+		if (!find_atom(f,meta_offset+12,meta_size-12,"ilst")) return 0;//shouldn't happen, find_atom_v2 above takes care of it
+		ilst_offset = mp4ff_position(f);
+		ilst_size = mp4ff_read_int32(f);
+
+		if (!create_ilst(data,&new_ilst_buffer,&new_ilst_size)) return 0;
+		
+		size_delta = new_ilst_size - (ilst_size - 8);
+
+		*out_size = total_size + size_delta;
+		*out_buffer = malloc(*out_size);
+		if (*out_buffer == 0)
+		{
+			free(new_ilst_buffer);
+			return 0;
+		}
+
+		p_out = (uint8_t*)*out_buffer;
+		
+		mp4ff_set_position(f,total_base);
+		mp4ff_read_data(f,p_out,(uint32_t)(udta_offset - total_base )); p_out += (uint32_t)(udta_offset - total_base );
+		*(uint32_t*)p_out = fix_byte_order_32(mp4ff_read_int32(f) + size_delta); p_out += 4;
+		mp4ff_read_data(f,p_out,4); p_out += 4;
+		mp4ff_read_data(f,p_out,(uint32_t)(meta_offset - udta_offset - 8)); p_out += (uint32_t)(meta_offset - udta_offset - 8);
+		*(uint32_t*)p_out = fix_byte_order_32(mp4ff_read_int32(f) + size_delta); p_out += 4;
+		mp4ff_read_data(f,p_out,4); p_out += 4;
+		mp4ff_read_data(f,p_out,(uint32_t)(ilst_offset - meta_offset - 8)); p_out += (uint32_t)(ilst_offset - meta_offset - 8);
+		*(uint32_t*)p_out = fix_byte_order_32(mp4ff_read_int32(f) + size_delta); p_out += 4;
+		mp4ff_read_data(f,p_out,4); p_out += 4;
+
+		memcpy(p_out,new_ilst_buffer,new_ilst_size);
+		p_out += new_ilst_size;
+
+		mp4ff_set_position(f,ilst_offset + ilst_size);
+		mp4ff_read_data(f,p_out,(uint32_t)(total_size - (ilst_offset - total_base) - ilst_size));
+
+		free(new_ilst_buffer);
+	}
+	return 1;
+
+}
+
+int32_t mp4ff_meta_update(mp4ff_callback_t *f,const mp4ff_metadata_t * data)
+{
+	void * new_moov_data;
+	uint32_t new_moov_size;
+
+    mp4ff_t *ff = malloc(sizeof(mp4ff_t));
+
+    memset(ff, 0, sizeof(mp4ff_t));
+    ff->stream = f;
+	mp4ff_set_position(ff,0);
+
+    parse_atoms(ff);
+
+
+	if (!modify_moov(ff,data,&new_moov_data,&new_moov_size))
+	{
+		mp4ff_close(ff);
+		return 0;
+	}
+
+    /* copy moov atom to end of the file */
+    if (ff->last_atom != ATOM_MOOV)
+    {
+        char *free_data = "free";
+
+        /* rename old moov to free */
+        mp4ff_set_position(ff, ff->moov_offset + 4);
+        mp4ff_write_data(ff, free_data, 4);
+	
+        mp4ff_set_position(ff, ff->file_size);
+		mp4ff_write_int32(ff,new_moov_size + 8);
+		mp4ff_write_data(ff,"moov",4);
+		mp4ff_write_data(ff, new_moov_data, new_moov_size);
+    }
+	else
+	{
+        mp4ff_set_position(ff, ff->moov_offset);
+		mp4ff_write_int32(ff,new_moov_size + 8);
+		mp4ff_write_data(ff,"moov",4);
+		mp4ff_write_data(ff, new_moov_data, new_moov_size);
+	}
+
+	mp4ff_truncate(ff);
+
+	mp4ff_close(ff);
+    return 1;
+}
+#endif
diff --git a/src/mp4ff/mp4util.c b/src/mp4ff/mp4util.c
new file mode 100644
index 000000000..1a77c97ae
--- /dev/null
+++ b/src/mp4ff/mp4util.c
@@ -0,0 +1,188 @@
+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
+**
+** $Id: mp4util.c,v 1.15 2004/01/11 15:52:19 menno Exp $
+**/
+
+#include "mp4ffint.h"
+#include <stdlib.h>
+
+int32_t mp4ff_read_data(mp4ff_t *f, int8_t *data, uint32_t size)
+{
+    int32_t result = 1;
+
+    result = f->stream->read(f->stream->user_data, data, size);
+
+    f->current_position += size;
+
+    return result;
+}
+
+int32_t mp4ff_truncate(mp4ff_t * f)
+{
+	return f->stream->truncate(f->stream->user_data);
+}
+
+int32_t mp4ff_write_data(mp4ff_t *f, int8_t *data, uint32_t size)
+{
+    int32_t result = 1;
+
+    result = f->stream->write(f->stream->user_data, data, size);
+
+    f->current_position += size;
+
+    return result;
+}
+
+int32_t mp4ff_write_int32(mp4ff_t *f,const uint32_t data)
+{
+	uint32_t result;
+    uint32_t a, b, c, d;
+    int8_t temp[4];
+    
+    *(uint32_t*)temp = data;
+    a = (uint8_t)temp[0];
+    b = (uint8_t)temp[1];
+    c = (uint8_t)temp[2];
+    d = (uint8_t)temp[3];
+
+    result = (a<<24) | (b<<16) | (c<<8) | d;
+
+    return mp4ff_write_data(f,(uint8_t*)&result,sizeof(result));
+}
+
+int32_t mp4ff_set_position(mp4ff_t *f, const int64_t position)
+{
+    f->stream->seek(f->stream->user_data, position);
+    f->current_position = position;
+
+    return 0;
+}
+
+int64_t mp4ff_position(const mp4ff_t *f)
+{
+    return f->current_position;
+}
+
+uint64_t mp4ff_read_int64(mp4ff_t *f)
+{
+    uint8_t data[8];
+    uint64_t result = 0;
+    int8_t i;
+
+    mp4ff_read_data(f, data, 8);
+
+    for (i = 0; i < 8; i++)
+    {
+        result |= ((uint64_t)data[i]) << ((7 - i) * 8);
+    }
+
+    return result;
+}
+
+uint32_t mp4ff_read_int32(mp4ff_t *f)
+{
+    uint32_t result;
+    uint32_t a, b, c, d;
+    int8_t data[4];
+    
+    mp4ff_read_data(f, data, 4);
+    a = (uint8_t)data[0];
+    b = (uint8_t)data[1];
+    c = (uint8_t)data[2];
+    d = (uint8_t)data[3];
+
+    result = (a<<24) | (b<<16) | (c<<8) | d;
+    return (uint32_t)result;
+}
+
+uint32_t mp4ff_read_int24(mp4ff_t *f)
+{
+    uint32_t result;
+    uint32_t a, b, c;
+    int8_t data[4];
+    
+    mp4ff_read_data(f, data, 3);
+    a = (uint8_t)data[0];
+    b = (uint8_t)data[1];
+    c = (uint8_t)data[2];
+
+    result = (a<<16) | (b<<8) | c;
+    return (uint32_t)result;
+}
+
+uint16_t mp4ff_read_int16(mp4ff_t *f)
+{
+    uint32_t result;
+    uint32_t a, b;
+    int8_t data[2];
+    
+    mp4ff_read_data(f, data, 2);
+    a = (uint8_t)data[0];
+    b = (uint8_t)data[1];
+
+    result = (a<<8) | b;
+    return (uint16_t)result;
+}
+
+char * mp4ff_read_string(mp4ff_t * f,uint32_t length)
+{
+	char * str = (char*)malloc(length + 1);
+	if (str!=0)
+	{
+		if ((uint32_t)mp4ff_read_data(f,str,length)!=length)
+		{
+			free(str);
+			str = 0;
+		}
+		else
+		{
+			str[length] = 0;
+		}
+	}
+	return str;	
+}
+
+uint8_t mp4ff_read_char(mp4ff_t *f)
+{
+    uint8_t output;
+    mp4ff_read_data(f, &output, 1);
+    return output;
+}
+
+uint32_t mp4ff_read_mp4_descr_length(mp4ff_t *f)
+{
+    uint8_t b;
+    uint8_t numBytes = 0;
+    uint32_t length = 0;
+
+    do
+    {
+        b = mp4ff_read_char(f);
+        numBytes++;
+        length = (length << 7) | (b & 0x7F);
+    } while ((b & 0x80) && numBytes < 4);
+
+    return length;
+}