[DO NOT MERGE] Extend OpenMAX IL definitions to support AC3

OpenMAX IL does not have generic support for AC3, but IL 1.1.2 and above
supports component extension APIs, which enable us to add our own constants
and definitions.

Change-Id: Iecee4f8bb3112b0720ceae9192017e12d3fe97e3

include/media/openmax/OMX_AudioExt.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2010 The Khronos Group Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject
+ * to the following conditions:
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/** OMX_AudioExt.h - OpenMax IL version 1.1.2
+ * The OMX_AudioExt header file contains extensions to the
+ * definitions used by both the application and the component to
+ * access video items.
+ */
+
+#ifndef OMX_AudioExt_h
+#define OMX_AudioExt_h
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/* Each OMX header shall include all required header files to allow the
+ * header to compile without errors.  The includes below are required
+ * for this header file to compile successfully
+ */
+#include <OMX_Core.h>
+
+typedef enum OMX_AUDIO_CODINGEXTTYPE {
+    OMX_AUDIO_CodingAndroidUnused = OMX_AUDIO_CodingKhronosExtensions + 0x00100000,
+    OMX_AUDIO_CodingAndroidAC3,         /**< AC3 encoded data */
+} OMX_AUDIO_CODINGEXTTYPE;
+
+typedef struct OMX_AUDIO_PARAM_ANDROID_AC3TYPE {
+    OMX_U32 nSize;                 /**< size of the structure in bytes */
+    OMX_VERSIONTYPE nVersion;      /**< OMX specification version information */
+    OMX_U32 nPortIndex;            /**< port that this structure applies to */
+    OMX_U32 nChannels;             /**< Number of channels */
+    OMX_U32 nSampleRate;           /**< Sampling rate of the source data.  Use 0 for
+                                        variable or unknown sampling rate. */
+} OMX_AUDIO_PARAM_ANDROID_AC3TYPE;
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* OMX_AudioExt_h */
+/* File EOF */

include/media/openmax/OMX_IndexExt.h

@@ -57,6 +57,7 @@ typedef enum OMX_INDEXEXTTYPE {
 
     /* Audio parameters and configurations */
     OMX_IndexExtAudioStartUnused = OMX_IndexKhronosExtensions + 0x00400000,
+    OMX_IndexParamAudioAndroidAc3,                  /**< reference: OMX_AUDIO_PARAM_ANDROID_AC3TYPE */
 
     /* Image parameters and configurations */
     OMX_IndexExtImageStartUnused = OMX_IndexKhronosExtensions + 0x00500000,