Squashed commit of the following:

commit 543e192bf2ae13f573dc4c4e53b239ed4ea00e81
Author: Andreas Huber <andih@google.com>
Date:   Thu Dec 3 11:33:57 2009 -0800

    stagefright now acts as the OMX Master, vendors supply their own plugins through libstagefrighthw. In OpenCore-enabled builds we now sit on top of PVMaster...

commit 3cbfdbd9cecadbb77b63125c62883bf1065884fe
Author: Andreas Huber <andih@google.com>
Date:   Wed Dec 2 12:39:07 2009 -0800

    More OMX infrastructure, stagefright is now taking over the OMX Master, multiplexing all contributing OMX implementations under a common interface.

1 files changed, 96 insertions, 0 deletions

diff --git a/media/libstagefright/omx/OMXComponentBase.h b/media/libstagefright/omx/OMXComponentBase.h
new file mode 100644
index 0000000..fd0df0b
--- /dev/null
+++ b/media/libstagefright/omx/OMXComponentBase.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2009 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 OMX_COMPONENT_BASE_H_
+
+#define OMX_COMPONENT_BASE_H_
+
+#include <OMX_Component.h>
+
+namespace android {
+
+struct OMXComponentBase {
+    OMXComponentBase(
+            const OMX_CALLBACKTYPE *callbacks,
+            OMX_PTR appData);
+
+    virtual ~OMXComponentBase();
+
+    virtual OMX_ERRORTYPE sendCommand(
+            OMX_COMMANDTYPE cmd, OMX_U32 param, OMX_PTR cmdData) = 0;
+
+    virtual OMX_ERRORTYPE getParameter(
+            OMX_INDEXTYPE index, OMX_PTR params) = 0;
+
+    virtual OMX_ERRORTYPE setParameter(
+            OMX_INDEXTYPE index, const OMX_PTR params) = 0;
+
+    virtual OMX_ERRORTYPE getConfig(
+            OMX_INDEXTYPE index, OMX_PTR config) = 0;
+
+    virtual OMX_ERRORTYPE setConfig(
+            OMX_INDEXTYPE index, const OMX_PTR config) = 0;
+
+    virtual OMX_ERRORTYPE getExtensionIndex(
+            const OMX_STRING name, OMX_INDEXTYPE *index) = 0;
+
+    virtual OMX_ERRORTYPE useBuffer(
+            OMX_BUFFERHEADERTYPE **bufHdr,
+            OMX_U32 portIndex,
+            OMX_PTR appPrivate,
+            OMX_U32 size,
+            OMX_U8 *buffer) = 0;
+
+    virtual OMX_ERRORTYPE allocateBuffer(
+            OMX_BUFFERHEADERTYPE **bufHdr,
+            OMX_U32 portIndex,
+            OMX_PTR appPrivate,
+            OMX_U32 size) = 0;
+
+    virtual OMX_ERRORTYPE freeBuffer(
+            OMX_U32 portIndex,
+            OMX_BUFFERHEADERTYPE *buffer) = 0;
+
+    virtual OMX_ERRORTYPE emptyThisBuffer(OMX_BUFFERHEADERTYPE *buffer) = 0;
+    virtual OMX_ERRORTYPE fillThisBuffer(OMX_BUFFERHEADERTYPE *buffer) = 0;
+
+    virtual OMX_ERRORTYPE enumerateRoles(OMX_U8 *role, OMX_U32 index) = 0;
+
+    virtual OMX_ERRORTYPE getState(OMX_STATETYPE *state) = 0;
+
+    // Wraps a given OMXComponentBase instance into an OMX_COMPONENTTYPE
+    // as required by OpenMAX APIs.
+    static OMX_COMPONENTTYPE *MakeComponent(OMXComponentBase *base);
+
+protected:
+    void postEvent(OMX_EVENTTYPE event, OMX_U32 param1, OMX_U32 param2);
+    void postFillBufferDone(OMX_BUFFERHEADERTYPE *bufHdr);
+    void postEmptyBufferDone(OMX_BUFFERHEADERTYPE *bufHdr);
+
+private:
+    void setComponentHandle(OMX_COMPONENTTYPE *handle);
+
+    const OMX_CALLBACKTYPE *mCallbacks;
+    OMX_PTR mAppData;
+    OMX_COMPONENTTYPE *mComponentHandle;
+
+    OMXComponentBase(const OMXComponentBase &);
+    OMXComponentBase &operator=(const OMXComponentBase &);
+};
+
+}  // namespace android
+
+#endif  // OMX_COMPONENT_BASE_H_