Move C2HandleIon and C2AllocationIon to internal dir

So they can be accessed by other classes sunch as tv_tuner

Test: make;
Change-Id: Ie07c1a55a19b843acd4d04b6e0d1b49af9c9116c
diff --git a/media/codec2/vndk/internal/C2HandleIonInternal.h b/media/codec2/vndk/internal/C2HandleIonInternal.h
new file mode 100644
index 0000000..c0e1d83
--- /dev/null
+++ b/media/codec2/vndk/internal/C2HandleIonInternal.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2020 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 STAGEFRIGHT_CODEC2_ALLOCATION_ION_H_
+#define STAGEFRIGHT_CODEC2_ALLOCATION_ION_H_
+
+#include <C2Buffer.h>
+
+namespace android {
+
+struct C2HandleIon : public C2Handle {
+    // ion handle owns ionFd(!) and bufferFd
+    C2HandleIon(int bufferFd, size_t size)
+        : C2Handle(cHeader),
+          mFds{ bufferFd },
+          mInts{ int(size & 0xFFFFFFFF), int((uint64_t(size) >> 32) & 0xFFFFFFFF), kMagic } { }
+
+    static bool isValid(const C2Handle * const o);
+
+    int bufferFd() const { return mFds.mBuffer; }
+    size_t size() const {
+        return size_t(unsigned(mInts.mSizeLo))
+                | size_t(uint64_t(unsigned(mInts.mSizeHi)) << 32);
+    }
+
+protected:
+    struct {
+        int mBuffer; // shared ion buffer
+    } mFds;
+    struct {
+        int mSizeLo; // low 32-bits of size
+        int mSizeHi; // high 32-bits of size
+        int mMagic;
+    } mInts;
+
+private:
+    typedef C2HandleIon _type;
+    enum {
+        kMagic = '\xc2io\x00',
+        numFds = sizeof(mFds) / sizeof(int),
+        numInts = sizeof(mInts) / sizeof(int),
+        version = sizeof(C2Handle)
+    };
+    //constexpr static C2Handle cHeader = { version, numFds, numInts, {} };
+    const static C2Handle cHeader;
+};
+} // namespace android
+
+#endif // STAGEFRIGHT_CODEC2_ALLOCATION_ION_H_