Added deinterlacer

Decoder output is deinterlaced if a picture is signalled as interlaced
Added SIMD optimizations for arm, armv8 and x86/x64

Bug: 20932810

Change-Id: I6079922f4fc8f1d3680e5169a4d8e70efe8ea471
diff --git a/common/ideint_structs.h b/common/ideint_structs.h
new file mode 100644
index 0000000..e92e1c1
--- /dev/null
+++ b/common/ideint_structs.h
@@ -0,0 +1,70 @@
+/******************************************************************************
+ *
+ * Copyright (C) 2015 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.
+ *
+ *****************************************************************************
+ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
+*/
+/**
+*******************************************************************************
+* @file
+*  ideint_structs.h
+*
+* @brief
+*  Deinterlacer structure definitions
+*
+* @author
+*  Ittiam
+*
+* @par List of Functions:
+*
+* @remarks
+*  None
+*
+*******************************************************************************
+*/
+
+#ifndef __IDEINT_STRUCTS_H__
+#define __IDEINT_STRUCTS_H__
+
+typedef void ideint_spatial_filter_t(UWORD8 *pu1_src,
+                                     UWORD8 *pu1_out,
+                                     WORD32 cur_strd,
+                                     WORD32 out_strd);
+
+typedef WORD32 ideint_cac_8x8_t(UWORD8 *pu1_top,
+                                UWORD8 *pu1_bot,
+                                WORD32 i4_top_stride,
+                                WORD32 i4_bot_stride);
+/** Deinterlacer context */
+typedef struct
+{
+    /** params */
+    ideint_params_t s_params;
+
+    /** Adaptive variance used in spatio temporal filtering */
+    WORD32 ai4_vrnc_avg_fb[3];
+
+    /** Function pointers */
+    icv_sad_8x4_t *pf_sad_8x4;
+
+    icv_variance_8x4_t *pf_variance_8x4;
+
+    ideint_spatial_filter_t *pf_spatial_filter;
+
+    ideint_cac_8x8_t    *pf_cac_8x8;
+}ctxt_t;
+
+#endif /* __IDEINT_STRUCTS_H__ */