diff -r 000000000000 -r 6474c204b198 media/omx-plugin/include/froyo/utils/RefBase.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/omx-plugin/include/froyo/utils/RefBase.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,554 @@
+/*
+ * Copyright (C) 2005 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_REF_BASE_H
+#define ANDROID_REF_BASE_H
+
+#include <cutils/atomic.h>
+#include <utils/TextOutput.h>
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <stdlib.h>
+
+// ---------------------------------------------------------------------------
+namespace android {
+
+template<typename T> class wp;
+
+// ---------------------------------------------------------------------------
+
+#define COMPARE(_op_)                                           \
+inline bool operator _op_ (const sp<T>& o) const {              \
+    return m_ptr _op_ o.m_ptr;                                  \
+}                                                               \
+inline bool operator _op_ (const wp<T>& o) const {              \
+    return m_ptr _op_ o.m_ptr;                                  \
+}                                                               \
+inline bool operator _op_ (const T* o) const {                  \
+    return m_ptr _op_ o;                                        \
+}                                                               \
+template<typename U>                                            \
+inline bool operator _op_ (const sp<U>& o) const {              \
+    return m_ptr _op_ o.m_ptr;                                  \
+}                                                               \
+template<typename U>                                            \
+inline bool operator _op_ (const wp<U>& o) const {              \
+    return m_ptr _op_ o.m_ptr;                                  \
+}                                                               \
+template<typename U>                                            \
+inline bool operator _op_ (const U* o) const {                  \
+    return m_ptr _op_ o;                                        \
+}
+
+// ---------------------------------------------------------------------------
+
+class RefBase
+{
+public:
+            void            incStrong(const void* id) const;
+            void            decStrong(const void* id) const;
+    
+            void            forceIncStrong(const void* id) const;
+
+            //! DEBUGGING ONLY: Get current strong ref count.
+            int32_t         getStrongCount() const;
+
+    class weakref_type
+    {
+    public:
+        RefBase*            refBase() const;
+        
+        void                incWeak(const void* id);
+        void                decWeak(const void* id);
+        
+        bool                attemptIncStrong(const void* id);
+        
+        //! This is only safe if you have set OBJECT_LIFETIME_FOREVER.
+        bool                attemptIncWeak(const void* id);
+
+        //! DEBUGGING ONLY: Get current weak ref count.
+        int32_t             getWeakCount() const;
+
+        //! DEBUGGING ONLY: Print references held on object.
+        void                printRefs() const;
+
+        //! DEBUGGING ONLY: Enable tracking for this object.
+        // enable -- enable/disable tracking
+        // retain -- when tracking is enable, if true, then we save a stack trace
+        //           for each reference and dereference; when retain == false, we
+        //           match up references and dereferences and keep only the 
+        //           outstanding ones.
+        
+        void                trackMe(bool enable, bool retain);
+    };
+    
+            weakref_type*   createWeak(const void* id) const;
+            
+            weakref_type*   getWeakRefs() const;
+
+            //! DEBUGGING ONLY: Print references held on object.
+    inline  void            printRefs() const { getWeakRefs()->printRefs(); }
+
+            //! DEBUGGING ONLY: Enable tracking of object.
+    inline  void            trackMe(bool enable, bool retain)
+    { 
+        getWeakRefs()->trackMe(enable, retain); 
+    }
+
+protected:
+                            RefBase();
+    virtual                 ~RefBase();
+    
+    //! Flags for extendObjectLifetime()
+    enum {
+        OBJECT_LIFETIME_WEAK    = 0x0001,
+        OBJECT_LIFETIME_FOREVER = 0x0003
+    };
+    
+            void            extendObjectLifetime(int32_t mode);
+            
+    //! Flags for onIncStrongAttempted()
+    enum {
+        FIRST_INC_STRONG = 0x0001
+    };
+    
+    virtual void            onFirstRef();
+    virtual void            onLastStrongRef(const void* id);
+    virtual bool            onIncStrongAttempted(uint32_t flags, const void* id);
+    virtual void            onLastWeakRef(const void* id);
+
+private:
+    friend class weakref_type;
+    class weakref_impl;
+    
+                            RefBase(const RefBase& o);
+            RefBase&        operator=(const RefBase& o);
+            
+        weakref_impl* const mRefs;
+};
+
+// ---------------------------------------------------------------------------
+
+template <class T>
+class LightRefBase
+{
+public:
+    inline LightRefBase() : mCount(0) { }
+    inline void incStrong(const void* id) const {
+        android_atomic_inc(&mCount);
+    }
+    inline void decStrong(const void* id) const {
+        if (android_atomic_dec(&mCount) == 1) {
+            delete static_cast<const T*>(this);
+        }
+    }
+    //! DEBUGGING ONLY: Get current strong ref count.
+    inline int32_t getStrongCount() const {
+        return mCount;
+    }
+    
+protected:
+    inline ~LightRefBase() { }
+    
+private:
+    mutable volatile int32_t mCount;
+};
+
+// ---------------------------------------------------------------------------
+
+template <typename T>
+class sp
+{
+public:
+    typedef typename RefBase::weakref_type weakref_type;
+    
+    inline sp() : m_ptr(0) { }
+
+    sp(T* other);
+    sp(const sp<T>& other);
+    template<typename U> sp(U* other);
+    template<typename U> sp(const sp<U>& other);
+
+    ~sp();
+    
+    // Assignment
+
+    sp& operator = (T* other);
+    sp& operator = (const sp<T>& other);
+    
+    template<typename U> sp& operator = (const sp<U>& other);
+    template<typename U> sp& operator = (U* other);
+    
+    //! Special optimization for use by ProcessState (and nobody else).
+    void force_set(T* other);
+    
+    // Reset
+    
+    void clear();
+    
+    // Accessors
+
+    inline  T&      operator* () const  { return *m_ptr; }
+    inline  T*      operator-> () const { return m_ptr;  }
+    inline  T*      get() const         { return m_ptr; }
+
+    // Operators
+        
+    COMPARE(==)
+    COMPARE(!=)
+    COMPARE(>)
+    COMPARE(<)
+    COMPARE(<=)
+    COMPARE(>=)
+
+private:    
+    template<typename Y> friend class sp;
+    template<typename Y> friend class wp;
+
+    // Optimization for wp::promote().
+    sp(T* p, weakref_type* refs);
+    
+    T*              m_ptr;
+};
+
+template <typename T>
+TextOutput& operator<<(TextOutput& to, const sp<T>& val);
+
+// ---------------------------------------------------------------------------
+
+template <typename T>
+class wp
+{
+public:
+    typedef typename RefBase::weakref_type weakref_type;
+    
+    inline wp() : m_ptr(0) { }
+
+    wp(T* other);
+    wp(const wp<T>& other);
+    wp(const sp<T>& other);
+    template<typename U> wp(U* other);
+    template<typename U> wp(const sp<U>& other);
+    template<typename U> wp(const wp<U>& other);
+
+    ~wp();
+    
+    // Assignment
+
+    wp& operator = (T* other);
+    wp& operator = (const wp<T>& other);
+    wp& operator = (const sp<T>& other);
+    
+    template<typename U> wp& operator = (U* other);
+    template<typename U> wp& operator = (const wp<U>& other);
+    template<typename U> wp& operator = (const sp<U>& other);
+    
+    void set_object_and_refs(T* other, weakref_type* refs);
+
+    // promotion to sp
+    
+    sp<T> promote() const;
+
+    // Reset
+    
+    void clear();
+
+    // Accessors
+    
+    inline  weakref_type* get_refs() const { return m_refs; }
+    
+    inline  T* unsafe_get() const { return m_ptr; }
+
+    // Operators
+        
+    COMPARE(==)
+    COMPARE(!=)
+    COMPARE(>)
+    COMPARE(<)
+    COMPARE(<=)
+    COMPARE(>=)
+
+private:
+    template<typename Y> friend class sp;
+    template<typename Y> friend class wp;
+
+    T*              m_ptr;
+    weakref_type*   m_refs;
+};
+
+template <typename T>
+TextOutput& operator<<(TextOutput& to, const wp<T>& val);
+
+#undef COMPARE
+
+// ---------------------------------------------------------------------------
+// No user serviceable parts below here.
+
+template<typename T>
+sp<T>::sp(T* other)
+    : m_ptr(other)
+{
+    if (other) other->incStrong(this);
+}
+
+template<typename T>
+sp<T>::sp(const sp<T>& other)
+    : m_ptr(other.m_ptr)
+{
+    if (m_ptr) m_ptr->incStrong(this);
+}
+
+template<typename T> template<typename U>
+sp<T>::sp(U* other) : m_ptr(other)
+{
+    if (other) other->incStrong(this);
+}
+
+template<typename T> template<typename U>
+sp<T>::sp(const sp<U>& other)
+    : m_ptr(other.m_ptr)
+{
+    if (m_ptr) m_ptr->incStrong(this);
+}
+
+template<typename T>
+sp<T>::~sp()
+{
+    if (m_ptr) m_ptr->decStrong(this);
+}
+
+template<typename T>
+sp<T>& sp<T>::operator = (const sp<T>& other) {
+    if (other.m_ptr) other.m_ptr->incStrong(this);
+    if (m_ptr) m_ptr->decStrong(this);
+    m_ptr = other.m_ptr;
+    return *this;
+}
+
+template<typename T>
+sp<T>& sp<T>::operator = (T* other)
+{
+    if (other) other->incStrong(this);
+    if (m_ptr) m_ptr->decStrong(this);
+    m_ptr = other;
+    return *this;
+}
+
+template<typename T> template<typename U>
+sp<T>& sp<T>::operator = (const sp<U>& other)
+{
+    if (other.m_ptr) other.m_ptr->incStrong(this);
+    if (m_ptr) m_ptr->decStrong(this);
+    m_ptr = other.m_ptr;
+    return *this;
+}
+
+template<typename T> template<typename U>
+sp<T>& sp<T>::operator = (U* other)
+{
+    if (other) other->incStrong(this);
+    if (m_ptr) m_ptr->decStrong(this);
+    m_ptr = other;
+    return *this;
+}
+
+template<typename T>    
+void sp<T>::force_set(T* other)
+{
+    other->forceIncStrong(this);
+    m_ptr = other;
+}
+
+template<typename T>
+void sp<T>::clear()
+{
+    if (m_ptr) {
+        m_ptr->decStrong(this);
+        m_ptr = 0;
+    }
+}
+
+template<typename T>
+sp<T>::sp(T* p, weakref_type* refs)
+    : m_ptr((p && refs->attemptIncStrong(this)) ? p : 0)
+{
+}
+
+template <typename T>
+inline TextOutput& operator<<(TextOutput& to, const sp<T>& val)
+{
+    to << "sp<>(" << val.get() << ")";
+    return to;
+}
+
+// ---------------------------------------------------------------------------
+
+template<typename T>
+wp<T>::wp(T* other)
+    : m_ptr(other)
+{
+    if (other) m_refs = other->createWeak(this);
+}
+
+template<typename T>
+wp<T>::wp(const wp<T>& other)
+    : m_ptr(other.m_ptr), m_refs(other.m_refs)
+{
+    if (m_ptr) m_refs->incWeak(this);
+}
+
+template<typename T>
+wp<T>::wp(const sp<T>& other)
+    : m_ptr(other.m_ptr)
+{
+    if (m_ptr) {
+        m_refs = m_ptr->createWeak(this);
+    }
+}
+
+template<typename T> template<typename U>
+wp<T>::wp(U* other)
+    : m_ptr(other)
+{
+    if (other) m_refs = other->createWeak(this);
+}
+
+template<typename T> template<typename U>
+wp<T>::wp(const wp<U>& other)
+    : m_ptr(other.m_ptr)
+{
+    if (m_ptr) {
+        m_refs = other.m_refs;
+        m_refs->incWeak(this);
+    }
+}
+
+template<typename T> template<typename U>
+wp<T>::wp(const sp<U>& other)
+    : m_ptr(other.m_ptr)
+{
+    if (m_ptr) {
+        m_refs = m_ptr->createWeak(this);
+    }
+}
+
+template<typename T>
+wp<T>::~wp()
+{
+    if (m_ptr) m_refs->decWeak(this);
+}
+
+template<typename T>
+wp<T>& wp<T>::operator = (T* other)
+{
+    weakref_type* newRefs =
+        other ? other->createWeak(this) : 0;
+    if (m_ptr) m_refs->decWeak(this);
+    m_ptr = other;
+    m_refs = newRefs;
+    return *this;
+}
+
+template<typename T>
+wp<T>& wp<T>::operator = (const wp<T>& other)
+{
+    if (other.m_ptr) other.m_refs->incWeak(this);
+    if (m_ptr) m_refs->decWeak(this);
+    m_ptr = other.m_ptr;
+    m_refs = other.m_refs;
+    return *this;
+}
+
+template<typename T>
+wp<T>& wp<T>::operator = (const sp<T>& other)
+{
+    weakref_type* newRefs =
+        other != NULL ? other->createWeak(this) : 0;
+    if (m_ptr) m_refs->decWeak(this);
+    m_ptr = other.get();
+    m_refs = newRefs;
+    return *this;
+}
+
+template<typename T> template<typename U>
+wp<T>& wp<T>::operator = (U* other)
+{
+    weakref_type* newRefs =
+        other ? other->createWeak(this) : 0;
+    if (m_ptr) m_refs->decWeak(this);
+    m_ptr = other;
+    m_refs = newRefs;
+    return *this;
+}
+
+template<typename T> template<typename U>
+wp<T>& wp<T>::operator = (const wp<U>& other)
+{
+    if (other.m_ptr) other.m_refs->incWeak(this);
+    if (m_ptr) m_refs->decWeak(this);
+    m_ptr = other.m_ptr;
+    m_refs = other.m_refs;
+    return *this;
+}
+
+template<typename T> template<typename U>
+wp<T>& wp<T>::operator = (const sp<U>& other)
+{
+    weakref_type* newRefs =
+        other != NULL ? other->createWeak(this) : 0;
+    if (m_ptr) m_refs->decWeak(this);
+    m_ptr = other.get();
+    m_refs = newRefs;
+    return *this;
+}
+
+template<typename T>
+void wp<T>::set_object_and_refs(T* other, weakref_type* refs)
+{
+    if (other) refs->incWeak(this);
+    if (m_ptr) m_refs->decWeak(this);
+    m_ptr = other;
+    m_refs = refs;
+}
+
+template<typename T>
+sp<T> wp<T>::promote() const
+{
+    return sp<T>(m_ptr, m_refs);
+}
+
+template<typename T>
+void wp<T>::clear()
+{
+    if (m_ptr) {
+        m_refs->decWeak(this);
+        m_ptr = 0;
+    }
+}
+
+template <typename T>
+inline TextOutput& operator<<(TextOutput& to, const wp<T>& val)
+{
+    to << "wp<>(" << val.unsafe_get() << ")";
+    return to;
+}
+
+}; // namespace android
+
+// ---------------------------------------------------------------------------
+
+#endif // ANDROID_REF_BASE_H