Initial version

Change-Id: I7efe9a589cd24edf86e8d086b40c27cbbf8b4017

1 files changed, 331 insertions, 0 deletions

diff --git a/common/ih264_padding.c b/common/ih264_padding.c
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+++ b/common/ih264_padding.c
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+/******************************************************************************
+ *
+ * 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;
+    }
+}
+