From c69f41d2997ba958fb14a6464ec673baca0c5634 Mon Sep 17 00:00:00 2001
From: Andoni Morales Alastruey <ylatuya@gmail.com>
Date: Thu, 25 Apr 2013 11:17:16 +0200
Subject: applemedia: replace private function with its public variant

FigVideoFormatDescriptionCreateWithSampleDescriptionExtensionAtom
is an un-documented private function which might change its signature
as it already did in the past. Replace it with
CMVideoFormatDescriptionCreate and the also un-documented Extensions
dictionary.
---
 sys/applemedia/vtdec.c  | 41 +++++++++++++++++++++++++++++++----------
 sys/applemedia/vtutil.c | 37 +++++++++++++++++++++++++++++++++++++
 sys/applemedia/vtutil.h |  8 ++++++++
 3 files changed, 76 insertions(+), 10 deletions(-)

diff --git a/sys/applemedia/vtdec.c b/sys/applemedia/vtdec.c
index 6947680b0..2aed900aa 100644
--- a/sys/applemedia/vtdec.c
+++ b/sys/applemedia/vtdec.c
@@ -54,11 +54,6 @@ static gboolean gst_vtdec_sink_event (GstPad * pad, GstObject * parent,
 static CMSampleBufferRef gst_vtdec_sample_buffer_from (GstVTDec * self,
     GstBuffer * buf);
 
-extern OSStatus FigVideoFormatDescriptionCreateWithSampleDescriptionExtensionAtom
-    (CFAllocatorRef allocator, UInt32 formatId, UInt32 width, UInt32 height,
-    UInt32 atomId, const UInt8 * data, CFIndex len, void *unk1,
-    CMFormatDescriptionRef * formatDesc);
-
 static void
 gst_vtdec_base_init (GstVTDecClass * klass)
 {
@@ -359,15 +354,41 @@ gst_vtdec_create_format_description_from_codec_data (GstVTDec * self,
     GstBuffer * codec_data)
 {
   CMFormatDescriptionRef fmt_desc;
-  OSStatus status;
+  CFMutableDictionaryRef extensions, par, atoms;
   GstMapInfo map;
+  OSStatus status;
 
   gst_buffer_map (codec_data, &map, GST_MAP_READ);
 
-  status =
-      FigVideoFormatDescriptionCreateWithSampleDescriptionExtensionAtom (NULL,
-      self->details->format_id, self->vinfo.width, self->vinfo.height, 'avcC',
-      map.data, map.size, NULL, &fmt_desc);
+  /* CVPixelAspectRatio dict */
+  par = CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks,
+      &kCFTypeDictionaryValueCallBacks);
+  gst_vtutil_dict_set_i32 (par, CFSTR ("HorizontalSpacing"),
+      self->vinfo.par_n);
+  gst_vtutil_dict_set_i32 (par, CFSTR ("VerticalSpacing"),
+      self->vinfo.par_d);
+
+  /* SampleDescriptionExtensionAtoms dict */
+  atoms = CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks,
+      &kCFTypeDictionaryValueCallBacks);
+  gst_vtutil_dict_set_data (atoms, CFSTR ("avcC"), map.data, map.size);
+
+  /* Extensions dict */
+  extensions = CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks,
+      &kCFTypeDictionaryValueCallBacks);
+  gst_vtutil_dict_set_string (extensions,
+      CFSTR ("CVImageBufferChromaLocationBottomField"), "left");
+  gst_vtutil_dict_set_string (extensions,
+      CFSTR ("CVImageBufferChromaLocationTopField"), "left");
+  gst_vtutil_dict_set_boolean (extensions, CFSTR("FullRangeVideo"), FALSE);
+  gst_vtutil_dict_set_object (extensions, CFSTR ("CVPixelAspectRatio"),
+      (CFTypeRef *) par);
+  gst_vtutil_dict_set_object (extensions,
+      CFSTR ("SampleDescriptionExtensionAtoms"), (CFTypeRef *) atoms);
+
+  status = CMVideoFormatDescriptionCreate (NULL,
+      self->details->format_id, self->vinfo.width, self->vinfo.height,
+      extensions, &fmt_desc);
 
   gst_buffer_unmap (codec_data, &map);
 
diff --git a/sys/applemedia/vtutil.c b/sys/applemedia/vtutil.c
index d87cb0f5c..40274c25b 100644
--- a/sys/applemedia/vtutil.c
+++ b/sys/applemedia/vtutil.c
@@ -59,3 +59,40 @@ gst_vtutil_dict_set_i32 (CFMutableDictionaryRef dict, CFStringRef key,
   CFDictionarySetValue (dict, key, number);
   CFRelease (number);
 }
+
+void
+gst_vtutil_dict_set_string (CFMutableDictionaryRef dict, CFStringRef key,
+    const gchar * value)
+{
+  CFStringRef string;
+
+  string = CFStringCreateWithCString (NULL, value, kCFStringEncodingASCII);
+  CFDictionarySetValue (dict, key, string);
+  CFRelease (string);
+}
+
+void
+gst_vtutil_dict_set_boolean (CFMutableDictionaryRef dict, CFStringRef key,
+    gboolean value)
+{
+  CFDictionarySetValue (dict, key, value ? kCFBooleanTrue: kCFBooleanFalse);
+}
+
+void
+gst_vtutil_dict_set_data (CFMutableDictionaryRef dict, CFStringRef key,
+    guint8 * value, guint64 length)
+{
+  CFDataRef data;
+
+  data = CFDataCreate (NULL, value, length);
+  CFDictionarySetValue (dict, key, data);
+  CFRelease (data);
+}
+
+void
+gst_vtutil_dict_set_object (CFMutableDictionaryRef dict, CFStringRef key,
+    CFTypeRef *value)
+{
+  CFDictionarySetValue (dict, key, value);
+  CFRelease (value);
+}
diff --git a/sys/applemedia/vtutil.h b/sys/applemedia/vtutil.h
index 5a8180817..4aa974bec 100644
--- a/sys/applemedia/vtutil.h
+++ b/sys/applemedia/vtutil.h
@@ -29,6 +29,14 @@ gchar * gst_vtutil_object_to_string (CFTypeRef obj);
 gchar * gst_vtutil_string_to_utf8 (CFStringRef s);
 void gst_vtutil_dict_set_i32 (CFMutableDictionaryRef dict,
     CFStringRef key, gint32 value);
+void gst_vtutil_dict_set_string (CFMutableDictionaryRef dict,
+    CFStringRef key, const gchar * value);
+void gst_vtutil_dict_set_boolean (CFMutableDictionaryRef dict,
+    CFStringRef key, gboolean value);
+void gst_vtutil_dict_set_data (CFMutableDictionaryRef dict,
+    CFStringRef key, guint8 * value, guint64 length);
+void gst_vtutil_dict_set_object (CFMutableDictionaryRef dict,
+    CFStringRef key, CFTypeRef * value);
 
 G_END_DECLS
 
-- 
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