Initial version
Change-Id: I7efe9a589cd24edf86e8d086b40c27cbbf8b4017
diff --git a/common/ih264_padding.c b/common/ih264_padding.c
new file mode 100755
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+++ b/common/ih264_padding.c
@@ -0,0 +1,331 @@
+/******************************************************************************
+ *
+ * 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
+* ih264_padding.c
+*
+* @brief
+* Contains function definitions for Padding
+*
+* @author
+* Ittiam
+*
+* @par List of Functions:
+* - ih264_pad_top()
+* - ih264_pad_bottom()
+* - ih264_pad_left_luma()
+* - ih264_pad_left_chroma()
+* - ih264_pad_right_luma()
+* - ih264_pad_right_chroma()
+*
+* @remarks
+* None
+*
+*******************************************************************************
+*/
+
+/*****************************************************************************/
+/* File Includes */
+/*****************************************************************************/
+
+/* System include files */
+#include <stddef.h>
+#include <string.h>
+
+/* User include files */
+#include "ih264_typedefs.h"
+#include "ih264_macros.h"
+#include "ih264_padding.h"
+
+
+/*****************************************************************************/
+/* Function Definitions */
+/*****************************************************************************/
+
+/**
+*******************************************************************************
+*
+* @brief pad at the top of a 2d array
+*
+* @par Description:
+* The top row of a 2d array is replicated for pad_size times at the top
+*
+* @param[in] pu1_src
+* UWORD8 pointer to the source
+*
+* @param[in] src_strd
+* integer source stride
+*
+* @param[in] wd
+* integer width of the array
+*
+* @param[in] pad_size
+* integer -padding size of the array
+*
+* @returns none
+*
+* @remarks none
+*
+*******************************************************************************
+*/
+void ih264_pad_top(UWORD8 *pu1_src,
+ WORD32 src_strd,
+ WORD32 wd,
+ WORD32 pad_size)
+{
+ WORD32 row;
+
+ for(row = 1; row <= pad_size; row++)
+ {
+ memcpy(pu1_src - row * src_strd, pu1_src, wd);
+ }
+}
+
+
+
+/**
+*******************************************************************************
+*
+* @brief pad at the bottom of a 2d array
+*
+* @par Description:
+* The bottom row of a 2d array is replicated for pad_size times at the bottom
+*
+* @param[in] pu1_src
+* UWORD8 pointer to the source
+*
+* @param[in] src_strd
+* integer source stride
+*
+* @param[in] wd
+* integer width of the array
+*
+* @param[in] pad_size
+* integer -padding size of the array
+*
+* @returns none
+*
+* @remarks none
+*
+*******************************************************************************
+*/
+void ih264_pad_bottom(UWORD8 *pu1_src,
+ WORD32 src_strd,
+ WORD32 wd,
+ WORD32 pad_size)
+{
+ WORD32 row;
+
+ for(row = 1; row <= pad_size; row++)
+ {
+ memcpy(pu1_src + (row - 1) * src_strd, pu1_src - 1 * src_strd, wd);
+ }
+}
+
+/**
+*******************************************************************************
+*
+* @brief pad (luma block) at the left of a 2d array
+*
+* @par Description:
+* The left column of a 2d array is replicated for pad_size times to the left
+*
+* @param[in] pu1_src
+* UWORD8 pointer to the source
+*
+* @param[in] src_strd
+* integer source stride
+*
+* @param[in] ht
+* integer height of the array
+*
+* @param[in] pad_size
+* integer -padding size of the array
+*
+* @returns none
+*
+* @remarks none
+*
+*******************************************************************************
+ */
+void ih264_pad_left_luma(UWORD8 *pu1_src,
+ WORD32 src_strd,
+ WORD32 ht,
+ WORD32 pad_size)
+{
+ WORD32 row;
+
+ for(row = 0; row < ht; row++)
+ {
+
+ memset(pu1_src - pad_size, *pu1_src, pad_size);
+
+ pu1_src += src_strd;
+ }
+}
+
+/**
+*******************************************************************************
+*
+* @brief pad (chroma block) at the left of a 2d array
+*
+* @par Description:
+* The left column of a 2d array is replicated for pad_size times to the left
+*
+* @param[in] pu1_src
+* UWORD8 pointer to the source
+*
+* @param[in] src_strd
+* integer source stride
+*
+* @param[in] ht
+* integer height of the array
+*
+* @param[in] pad_size
+* integer -padding size of the array
+*
+* @returns none
+*
+* @remarks none
+*
+*******************************************************************************
+*/
+void ih264_pad_left_chroma(UWORD8 *pu1_src,
+ WORD32 src_strd,
+ WORD32 ht,
+ WORD32 pad_size)
+{
+ /* temp var */
+ WORD32 row, col;
+ UWORD16 u2_uv_val;
+
+ /* pointer to src */
+ UWORD16 *pu2_src = (UWORD16 *)pu1_src;
+
+ src_strd >>= 1;
+ pad_size >>= 1;
+
+ for(row = 0; row < ht; row++)
+ {
+ u2_uv_val = pu2_src[0];
+
+ for (col = -pad_size; col < 0; col++)
+ {
+ pu2_src[col] = u2_uv_val;
+ }
+
+ pu2_src += src_strd;
+ }
+}
+
+/**
+*******************************************************************************
+*
+* @brief pad (luma block) at the right of a 2d array
+*
+* @par Description:
+* The right column of a 2d array is replicated for pad_size times at the right
+*
+* @param[in] pu1_src
+* UWORD8 pointer to the source
+*
+* @param[in] src_strd
+* integer source stride
+*
+* @param[in] ht
+* integer height of the array
+*
+* @param[in] pad_size
+* integer -padding size of the array
+*
+* @returns none
+*
+* @remarks none
+*
+*******************************************************************************
+*/
+void ih264_pad_right_luma(UWORD8 *pu1_src,
+ WORD32 src_strd,
+ WORD32 ht,
+ WORD32 pad_size)
+{
+ WORD32 row;
+
+ for(row = 0; row < ht; row++)
+ {
+ memset(pu1_src, *(pu1_src -1), pad_size);
+
+ pu1_src += src_strd;
+ }
+}
+
+/**
+*******************************************************************************
+*
+* @brief pad (chroma block) at the right of a 2d array
+*
+* @par Description:
+* The right column of a 2d array is replicated for pad_size times at the right
+*
+* @param[in] pu1_src
+* UWORD8 pointer to the source
+*
+* @param[in] src_strd
+* integer source stride
+*
+* @param[in] ht
+* integer height of the array
+*
+* @param[in] pad_size
+* integer -padding size of the array
+*
+* @returns none
+*
+* @remarks none
+*
+*******************************************************************************
+*/
+void ih264_pad_right_chroma(UWORD8 *pu1_src,
+ WORD32 src_strd,
+ WORD32 ht,
+ WORD32 pad_size)
+{
+ WORD32 row, col;
+ UWORD16 u2_uv_val;
+ UWORD16 *pu2_src = (UWORD16 *)pu1_src;
+
+ src_strd >>= 1;
+ pad_size >>= 1;
+
+ for(row = 0; row < ht; row++)
+ {
+ u2_uv_val = pu2_src[-1];
+
+ for (col = 0; col < pad_size; col++)
+ {
+ pu2_src[col] = u2_uv_val;
+ }
+
+ pu2_src += src_strd;
+ }
+}
+