Move emulator GLES from development.git to sdk.git

The emulator GLES support has two interfaces: a host shared library
interface used by QEMU, and a protocol between the platform and the
host. The host library interface is not versioned; QEMU and the GLES
renderer must match. The protocol on the other hand must be backwards
compatible: a new GLES renderer must support an older platform image.

Thus for branching purposes it makes more sense to put the GLES
renderer in sdk.git, which is branched along with qemu.git for SDK
releases. Platform images will be built against the protocol version
in the platform branch of sdk.git.

Change-Id: I2c3bce627ecfd0a4b3e688d1839fe10755a21e58

1 files changed, 167 insertions, 0 deletions

diff --git a/emulator/opengl/shared/OpenglCodecCommon/SmartPtr.h b/emulator/opengl/shared/OpenglCodecCommon/SmartPtr.h
new file mode 100644
index 0000000..4bdfbe4
--- /dev/null
+++ b/emulator/opengl/shared/OpenglCodecCommon/SmartPtr.h
@@ -0,0 +1,167 @@
+/*
+* Copyright (C) 2011 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 __SMART_PTR_H
+#define __SMART_PTR_H
+
+#include <cutils/threads.h>
+#include <cutils/atomic.h>
+
+template <class T, bool threadSafe = false>
+class SmartPtr
+{
+public:
+    explicit SmartPtr(T* ptr = (T*)NULL) {
+        if (threadSafe) {
+            m_lock = new mutex_t;
+            mutex_init(m_lock);
+        }
+        else m_lock = NULL;
+
+        m_ptr = ptr;
+        if (ptr)
+           m_pRefCount = new int32_t(1);
+        else
+           m_pRefCount = NULL;
+    }
+
+    SmartPtr<T,threadSafe>(const SmartPtr<T,false>& rhs) {
+        if (threadSafe) {
+            m_lock = new mutex_t;
+            mutex_init(m_lock);
+        }
+        else m_lock = NULL;
+
+        m_pRefCount = rhs.m_pRefCount;
+        m_ptr       = rhs.m_ptr;
+        use();
+    }
+
+    SmartPtr<T,threadSafe>(SmartPtr<T,true>& rhs) {
+        if (threadSafe) {
+            m_lock = new mutex_t;
+            mutex_init(m_lock);
+        }
+        else m_lock = NULL;
+
+        if (rhs.m_lock) mutex_lock(rhs.m_lock);
+        m_pRefCount = rhs.m_pRefCount;
+        m_ptr       = rhs.m_ptr;
+        use();
+        if (rhs.m_lock) mutex_unlock(rhs.m_lock);
+    }
+
+    ~SmartPtr() {
+        if (m_lock) mutex_lock(m_lock);
+        release();
+        if (m_lock)
+        {
+            mutex_unlock(m_lock);
+            mutex_destroy(m_lock);
+            delete m_lock;
+        }
+    }
+
+    T* Ptr() const {
+        return m_ptr;
+    }
+
+    const T* constPtr() const
+    {
+        return m_ptr;
+    }
+
+    T* operator->() const {
+        return m_ptr;
+    }
+
+    T& operator*() const {
+        return *m_ptr;
+    }
+
+    operator void*() const {
+        return (void *)m_ptr;
+    }
+
+    // This gives STL lists something to compare.
+    bool operator <(const SmartPtr<T>& t1) const {
+        return m_ptr < t1.m_ptr;
+    }
+
+    SmartPtr<T,threadSafe>& operator=(const SmartPtr<T,false>& rhs)
+    {
+        if (m_ptr == rhs.m_ptr)
+            return *this;
+
+        if (m_lock) mutex_lock(m_lock);
+        release();
+        m_pRefCount = rhs.m_pRefCount;
+        m_ptr       = rhs.m_ptr;
+        use();
+        if (m_lock) mutex_unlock(m_lock);
+
+        return *this;
+    }
+
+    SmartPtr<T,threadSafe>& operator=(SmartPtr<T,true>& rhs)
+    {
+        if (m_ptr == rhs.m_ptr)
+            return *this;
+
+        if (m_lock) mutex_lock(m_lock);
+        release();
+        if (rhs.m_lock) mutex_lock(rhs.m_lock);
+        m_pRefCount = rhs.m_pRefCount;
+        m_ptr       = rhs.m_ptr;
+        use();
+        if (rhs.m_lock) mutex_unlock(rhs.m_lock);
+        if (m_lock) mutex_unlock(m_lock);
+
+        return *this;
+    }
+
+private:
+    int32_t  *m_pRefCount;
+    mutex_t  *m_lock;
+    T* m_ptr;
+
+    // Increment the reference count on this pointer by 1.
+    int use() {
+        if (!m_pRefCount) return 0;
+        return android_atomic_inc(m_pRefCount) + 1;
+    }
+
+    // Decrement the reference count on the pointer by 1.
+    // If the reference count goes to (or below) 0, the pointer is deleted.
+    int release() {
+        if (!m_pRefCount) return 0;
+
+        int iVal = android_atomic_dec(m_pRefCount);
+        if (iVal > 1)
+            return iVal - 1;
+
+        delete m_pRefCount;
+        m_pRefCount = NULL;
+
+        if (m_ptr) {
+            delete m_ptr;
+            m_ptr = NULL;
+        }
+        return 0;
+    }
+
+};
+
+#endif // of  __SMART_PTR_H