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unplugged-system/external/libavc/common/svc/isvc_intra_resample.c

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Initial commit: AOSP 14 with modifications for Unplugged OS
2025-10-06 13:59:42 +00:00
/******************************************************************************
*
* Copyright (C) 2022 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 isvcd_resamp_svc.c
*
* \brief
* Contains routines that resample for SVC resampling
*
* Detailed_description
*
* \date
*
*
* \author
**************************************************************************
*/
#include <assert.h>
#include <string.h>
#include "ih264_typedefs.h"
#include "ih264_macros.h"
#include "isvc_macros.h"
#include "ih264_platform_macros.h"
#include "isvc_intra_resample.h"
#include "ih264_debug.h"
#include "isvc_defs.h"
#include "isvc_structs.h"
#define NUM_SEGMENTS 16
#define NUM_INTRA_SAMP_FXNS 32
#define INTERPOL_FILTER_SIZE_LUMA 64
#define INTERPOL_FILTER_SIZE_CHROMA 32
typedef void(PF_INTRA_SAMP_PADDING)(WORD32 i4_x, WORD32 i4_y, WORD8 i1_xd_index, WORD8 i1_yd_index,
UWORD8 u1_seg_wd, UWORD8 u1_seg_ht, UWORD8 *pu1_refarray_1,
UWORD8 *pu1_refarray_2, WORD32 i4_refarray_stride,
WORD32 i4_mb_adjoin_x, WORD32 i4_mb_adjoin_y,
WORD32 i4_corner_pixel_available);
static const WORD8 g_ai1_interp_filter_luma[INTERPOL_FILTER_SIZE_LUMA] = {
0, -1, -2, -3, -3, -4, -4, -3, -3, -3, -2, -1, -1, -1, -1, -1, 32, 32, 31, 30, 28, 26,
24, 22, 19, 16, 14, 11, 8, 6, 4, 2, 0, 2, 4, 6, 8, 11, 14, 16, 19, 22, 24, 26,
28, 30, 31, 32, 0, -1, -1, -1, -1, -1, -2, -3, -3, -3, -4, -4, -3, -3, -2, -1};
static const UWORD8 g_au1_interp_filter_chroma[INTERPOL_FILTER_SIZE_CHROMA] = {
32, 30, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2,
0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30};
static const UWORD32 gu4_valid_segs_lookup[NUM_SEGMENTS] = {
0x0F000000, 0xCF000000, 0x3F000000, 0xFF000000, 0x0F000000, 0xCF000000, 0x3F000000, 0xFF000000,
0x0F000000, 0x8F000000, 0x6F000000, 0xEF000000, 0x1F000000, 0x9F000000, 0x7F000000, 0xFF000000};
/*****************************************************************************/
/* */
/* Function Name : isvc_copy_data */
/* */
/* Description : this module copies the data from source to destination */
/* the amount of data to be copied is passed as input */
/* */
/* Inputs : pu1_src : pointer to the source buffer */
/* u2_src_stride : source buffer stride */
/* pu1_dst : pointer to the destination buffer */
/* u2_dst_stride : destination buffer stride */
/* u4_num_bytes : number of bytes to be copied */
/* u4_num_lines : number of lines to be copied */
/* Globals : none */
/* Processing : it does a memcpy from source to destination */
/* */
/* Outputs : none */
/* Returns : none */
/* Issues : both buffers are assumed to be 2-D buffers */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 29 04 2009 vijayakumar creation */
/* */
/*****************************************************************************/
/** \brief performs the 2-D memory transfer */
static void isvc_copy_data(UWORD8 *pu1_src, WORD32 i4_src_stride, UWORD8 *pu1_dst,
WORD32 i4_dst_stride, WORD32 i4_num_bytes, WORD32 i4_num_lines)
{
WORD32 i4_vert_lines;
ASSERT(NULL != pu1_src);
ASSERT(NULL != pu1_dst);
for(i4_vert_lines = 0; i4_vert_lines < i4_num_lines; i4_vert_lines++)
{
memcpy(pu1_dst, pu1_src, i4_num_bytes);
pu1_src += i4_src_stride;
pu1_dst += i4_dst_stride;
}
}
static void isvc_copy_data_semiplanr(UWORD8 *pu1_src, WORD32 i4_src_stride, UWORD8 *pu1_dst1,
UWORD8 *pu1_dst2, WORD32 i4_dst_stride, WORD32 i4_num_bytes,
WORD32 i4_num_lines)
{
WORD32 i4_vert_lines, u4_i;
ASSERT(NULL != pu1_src);
ASSERT(NULL != pu1_dst1);
ASSERT(NULL != pu1_dst2);
for(i4_vert_lines = 0; i4_vert_lines < i4_num_lines; i4_vert_lines++)
{
for(u4_i = 0; u4_i < i4_num_bytes; u4_i++)
{
*(pu1_dst1 + u4_i) = *(pu1_src + (2 * u4_i));
*(pu1_dst2 + u4_i) = *(pu1_src + (2 * u4_i) + 1);
}
pu1_src += i4_src_stride;
pu1_dst1 += i4_dst_stride;
pu1_dst2 += i4_dst_stride;
}
}
static void isvc_left_right_padding(WORD32 i4_x, WORD32 i4_y, WORD8 i1_xd_index, WORD8 i1_yd_index,
UWORD8 u1_seg_wd, UWORD8 u1_seg_ht, UWORD8 *pu1_refarray_1,
UWORD8 *pu1_refarray_2, WORD32 i4_refarray_stride,
WORD32 i4_mb_adjoin_x, WORD32 i4_mb_adjoin_y,
WORD32 i4_corner_pixel_available)
{
WORD32 i4_idx_i;
UWORD8 *pu1_src, *pu1_dst;
UNUSED(i1_yd_index);
UNUSED(pu1_refarray_2);
UNUSED(i4_mb_adjoin_x);
UNUSED(i4_mb_adjoin_y);
UNUSED(i4_corner_pixel_available);
pu1_dst = pu1_refarray_1 + i4_x + (i4_y * i4_refarray_stride);
pu1_src = pu1_dst + i1_xd_index;
i1_xd_index = MIN(i1_xd_index, MAX_PIX_FILL_LUMA);
u1_seg_wd = MIN(u1_seg_wd, MAX_PIX_FILL_LUMA);
pu1_dst = pu1_src - i1_xd_index;
for(i4_idx_i = 0; i4_idx_i < u1_seg_ht; i4_idx_i++)
{
memset(pu1_dst, *pu1_src, u1_seg_wd);
pu1_dst += i4_refarray_stride;
pu1_src += i4_refarray_stride;
}
}
static void isvc_left_right_padding_chroma(WORD32 i4_x, WORD32 i4_y, WORD8 i1_xd_index,
WORD8 i1_yd_index, UWORD8 u1_seg_wd, UWORD8 u1_seg_ht,
UWORD8 *pu1_refarray_1, UWORD8 *pu1_refarray_2,
WORD32 i4_refarray_stride, WORD32 i4_mb_adjoin_x,
WORD32 i4_mb_adjoin_y, WORD32 i4_corner_pixel_available)
{
WORD32 i4_idx_i;
UWORD8 *pu1_src_cb, *pu1_dst_cb;
UWORD8 *pu1_src_cr, *pu1_dst_cr;
WORD32 i4_tmp;
UNUSED(i1_yd_index);
UNUSED(i4_mb_adjoin_x);
UNUSED(i4_mb_adjoin_y);
UNUSED(i4_corner_pixel_available);
i4_tmp = i4_x + (i4_y * i4_refarray_stride);
pu1_dst_cb = pu1_refarray_1 + i4_tmp;
pu1_src_cb = pu1_dst_cb + i1_xd_index;
pu1_dst_cr = pu1_refarray_2 + i4_tmp;
pu1_src_cr = pu1_dst_cr + i1_xd_index;
i1_xd_index = MIN(i1_xd_index, MAX_PIX_FILL_CHROMA);
u1_seg_wd = MIN(u1_seg_wd, MAX_PIX_FILL_CHROMA);
pu1_dst_cb = pu1_src_cb - i1_xd_index;
pu1_dst_cr = pu1_src_cr - i1_xd_index;
for(i4_idx_i = 0; i4_idx_i < u1_seg_ht; i4_idx_i++)
{
memset(pu1_dst_cb, *pu1_src_cb, u1_seg_wd);
pu1_dst_cb += i4_refarray_stride;
pu1_src_cb += i4_refarray_stride;
memset(pu1_dst_cr, *pu1_src_cr, u1_seg_wd);
pu1_dst_cr += i4_refarray_stride;
pu1_src_cr += i4_refarray_stride;
}
}
static void isvc_top_bot_padding(WORD32 i4_x, WORD32 i4_y, WORD8 i1_xd_index, WORD8 i1_yd_index,
UWORD8 u1_seg_wd, UWORD8 u1_seg_ht, UWORD8 *pu1_refarray_1,
UWORD8 *pu1_refarray_2, WORD32 i4_refarray_stride,
WORD32 i4_mb_adjoin_x, WORD32 i4_mb_adjoin_y,
WORD32 i4_corner_pixel_available)
{
WORD32 i4_idx_i;
UWORD8 *pu1_src, *pu1_dst;
UNUSED(i1_xd_index);
UNUSED(pu1_refarray_2);
UNUSED(i4_mb_adjoin_x);
UNUSED(i4_mb_adjoin_y);
UNUSED(i4_corner_pixel_available);
pu1_dst = pu1_refarray_1 + i4_x + (i4_y * i4_refarray_stride);
pu1_src = pu1_dst + (i1_yd_index * i4_refarray_stride);
i1_yd_index = MIN(i1_yd_index, MAX_PIX_FILL_LUMA);
u1_seg_ht = MIN(u1_seg_ht, MAX_PIX_FILL_LUMA);
pu1_dst = pu1_src - (i1_yd_index * i4_refarray_stride);
for(i4_idx_i = 0; i4_idx_i < u1_seg_ht; i4_idx_i++)
{
memcpy(pu1_dst, pu1_src, u1_seg_wd);
pu1_dst += i4_refarray_stride;
}
}
static void isvc_top_bot_padding_chroma(WORD32 i4_x, WORD32 i4_y, WORD8 i1_xd_index,
WORD8 i1_yd_index, UWORD8 u1_seg_wd, UWORD8 u1_seg_ht,
UWORD8 *pu1_refarray_1, UWORD8 *pu1_refarray_2,
WORD32 i4_refarray_stride, WORD32 i4_mb_adjoin_x,
WORD32 i4_mb_adjoin_y, WORD32 i4_corner_pixel_available)
{
WORD32 i4_idx_i;
UWORD8 *pu1_src_cb, *pu1_dst_cb;
UWORD8 *pu1_src_cr, *pu1_dst_cr;
WORD32 i4_tmp;
UNUSED(i1_xd_index);
UNUSED(i4_mb_adjoin_x);
UNUSED(i4_mb_adjoin_y);
UNUSED(i4_corner_pixel_available);
i4_tmp = i4_x + (i4_y * i4_refarray_stride);
pu1_dst_cb = pu1_refarray_1 + i4_tmp;
pu1_dst_cr = pu1_refarray_2 + i4_tmp;
i4_tmp = (i1_yd_index * i4_refarray_stride);
pu1_src_cb = pu1_dst_cb + i4_tmp;
pu1_src_cr = pu1_dst_cr + i4_tmp;
i1_yd_index = MIN(i1_yd_index, MAX_PIX_FILL_CHROMA);
u1_seg_ht = MIN(u1_seg_ht, MAX_PIX_FILL_CHROMA);
i4_tmp = (i1_yd_index * i4_refarray_stride);
pu1_dst_cb = pu1_src_cb - i4_tmp;
pu1_dst_cr = pu1_src_cr - i4_tmp;
for(i4_idx_i = 0; i4_idx_i < u1_seg_ht; i4_idx_i++)
{
memcpy(pu1_dst_cb, pu1_src_cb, u1_seg_wd);
pu1_dst_cb += i4_refarray_stride;
memcpy(pu1_dst_cr, pu1_src_cr, u1_seg_wd);
pu1_dst_cr += i4_refarray_stride;
}
}
static void isvc_diag_reconstruction(WORD32 i4_x, WORD32 i4_y, WORD8 i1_xd_index, WORD8 i1_yd_index,
UWORD8 u1_seg_wd, UWORD8 u1_seg_ht, UWORD8 *pu1_refarray_1,
UWORD8 *pu1_refarray_2, WORD32 i4_refarray_stride,
WORD32 i4_mb_adjoin_x, WORD32 i4_mb_adjoin_y,
WORD32 i4_corner_pixel_available)
{
WORD32 i4_i;
UWORD8 *pu1_src_1, *pu1_src_2, *pu1_dst;
UWORD8 u1_filter_delay_buf[18];
UWORD8 u1_out_buf[16];
WORD32 i4_width, i4_height;
WORD32 i4_x_off, i4_y_off;
WORD32 i4_block_size = BLK_SIZE;
UNUSED(pu1_refarray_2);
pu1_dst = pu1_refarray_1 + i4_x + (i4_y * i4_refarray_stride);
pu1_src_1 = pu1_dst + i1_xd_index;
pu1_src_2 = pu1_dst + (i1_yd_index * i4_refarray_stride);
i4_width = MAX(u1_seg_wd, (((i4_mb_adjoin_x >> 3) ^ 1) * i4_block_size));
i4_height = MAX(u1_seg_ht, (((i4_mb_adjoin_y >> 4) ^ 1) * i4_block_size));
i4_x_off = (i4_width - u1_seg_wd);
i4_y_off = (i4_height - u1_seg_ht);
if(i1_xd_index > 0 && i1_yd_index > 0)
{
/* Quadrant 1 Processing */
/* load the pixel in the filter delay buffer */
memcpy(&u1_filter_delay_buf[0], pu1_src_2, (i4_width + 1));
for(i4_i = i4_height; i4_i > 0; i4_i--)
{
u1_filter_delay_buf[i4_width + i4_i] = *pu1_src_1;
pu1_src_1 += i4_refarray_stride;
}
if(0 == i4_corner_pixel_available)
{
/* interpolate the unavailable corner pixel */
u1_filter_delay_buf[i4_width] =
(u1_filter_delay_buf[i4_width - 1] + u1_filter_delay_buf[i4_width + 1] + 1) >> 1;
}
for(i4_i = 0; i4_i < (i4_width + i4_height - 1); i4_i++)
{
/* get the filtered output */
u1_out_buf[i4_i] = ((u1_filter_delay_buf[i4_i]) + (u1_filter_delay_buf[i4_i + 1] * 2) +
(u1_filter_delay_buf[i4_i + 2]) + 2) >>
2;
}
/* fill the segment with diagonal reconstructed output */
for(i4_i = 1; i4_i <= u1_seg_ht; i4_i++)
{
memcpy(pu1_dst, &u1_out_buf[i4_height - i4_i], u1_seg_wd);
pu1_dst += i4_refarray_stride;
}
}
else if(i1_xd_index < 0 && i1_yd_index > 0)
{
/* Quadrant 2 Processing */
/* load the pixel in the filter delay buffer */
for(i4_i = 0; i4_i < (i4_height + 1); i4_i++)
{
u1_filter_delay_buf[i4_i] = *pu1_src_1;
pu1_src_1 += i4_refarray_stride;
}
pu1_src_2 -= i4_x_off;
memcpy(&u1_filter_delay_buf[i4_i], pu1_src_2, i4_width);
if(0 == i4_corner_pixel_available)
{
/* interpolate the unavailable corner pixel */
u1_filter_delay_buf[i4_i - 1] =
(u1_filter_delay_buf[i4_i] + u1_filter_delay_buf[i4_i - 2] + 1) >> 1;
}
for(i4_i = 0; i4_i < (i4_width + i4_height - 1); i4_i++)
{
/* get the filtered output */
u1_out_buf[i4_i] = ((u1_filter_delay_buf[i4_i]) + (u1_filter_delay_buf[i4_i + 1] * 2) +
(u1_filter_delay_buf[i4_i + 2]) + 2) >>
2;
}
/* fill the segment with diagonal reconstructed output */
for(i4_i = 0; i4_i < u1_seg_ht; i4_i++)
{
memcpy(pu1_dst, &u1_out_buf[i4_x_off + i4_i], u1_seg_wd);
pu1_dst += i4_refarray_stride;
}
}
else if(i1_xd_index > 0 && i1_yd_index < 0)
{
/* Quadrant 3 Processing */
/* load the pixel in the filter delay buffer */
memcpy(&u1_filter_delay_buf[0], pu1_src_2, (i4_width + 1));
pu1_src_1 -= (i4_y_off * i4_refarray_stride);
for(i4_i = 1; i4_i <= i4_height; i4_i++)
{
u1_filter_delay_buf[i4_width + i4_i] = *pu1_src_1;
pu1_src_1 += i4_refarray_stride;
}
if(0 == i4_corner_pixel_available)
{
/* interpolate the unavailable corner pixel */
u1_filter_delay_buf[i4_width] =
(u1_filter_delay_buf[i4_width - 1] + u1_filter_delay_buf[i4_width + 1] + 1) >> 1;
}
for(i4_i = 0; i4_i < (i4_width + i4_height - 1); i4_i++)
{
/* get the filtered output */
u1_out_buf[i4_i] = ((u1_filter_delay_buf[i4_i]) + (u1_filter_delay_buf[i4_i + 1] * 2) +
(u1_filter_delay_buf[i4_i + 2]) + 2) >>
2;
}
/* fill the segment with diagonal reconstructed output */
for(i4_i = 0; i4_i < u1_seg_ht; i4_i++)
{
memcpy(pu1_dst, &u1_out_buf[i4_y_off + i4_i], u1_seg_wd);
pu1_dst += i4_refarray_stride;
}
}
else
{
/* Quadrant 4 Processing */
/* load the pixel in the filter delay buffer */
pu1_src_1 += ((u1_seg_ht - 1) * i4_refarray_stride);
for(i4_i = 0; i4_i <= i4_height; i4_i++)
{
u1_filter_delay_buf[i4_i] = *pu1_src_1;
pu1_src_1 -= i4_refarray_stride;
}
pu1_src_2 -= i4_x_off;
memcpy(&u1_filter_delay_buf[i4_i], pu1_src_2, i4_width);
if(0 == i4_corner_pixel_available)
{
/* interpolate the unavailable corner pixel */
u1_filter_delay_buf[i4_i - 1] =
(u1_filter_delay_buf[i4_i] + u1_filter_delay_buf[i4_i - 2] + 1) >> 1;
}
for(i4_i = 0; i4_i < (i4_width + i4_height - 1); i4_i++)
{
/* get the filtered output */
u1_out_buf[i4_i] = ((u1_filter_delay_buf[i4_i]) + (u1_filter_delay_buf[i4_i + 1] * 2) +
(u1_filter_delay_buf[i4_i + 2]) + 2) >>
2;
}
/* fill the segment with diagonal reconstructed output */
for(i4_i = 1; i4_i <= u1_seg_ht; i4_i++)
{
memcpy(pu1_dst, &u1_out_buf[(u1_seg_ht + i4_x_off) - i4_i], u1_seg_wd);
pu1_dst += i4_refarray_stride;
}
}
}
static void isvc_diag_reconstruction_chroma(WORD32 i4_x, WORD32 i4_y, WORD8 i1_xd_index,
WORD8 i1_yd_index, UWORD8 u1_seg_wd, UWORD8 u1_seg_ht,
UWORD8 *pu1_refarray_1, UWORD8 *pu1_refarray_2,
WORD32 i4_refarray_stride, WORD32 i4_mb_adjoin_x,
WORD32 i4_mb_adjoin_y, WORD32 i4_corner_pixel_available)
{
WORD32 i4_i;
UWORD8 u1_filter_delay_buf_cb[18], u1_filter_delay_buf_cr[18];
UWORD8 u1_out_buf_cb[16], u1_out_buf_cr[16];
WORD32 i4_width, i4_height;
WORD32 i4_x_off, i4_y_off;
WORD32 i4_block_size = BLK_SIZE >> 1;
UWORD8 *pu1_src_1_cb, *pu1_src_2_cb, *pu1_dst_cb;
UWORD8 *pu1_src_1_cr, *pu1_src_2_cr, *pu1_dst_cr;
WORD32 i4_tmp;
i4_tmp = i4_x + (i4_y * i4_refarray_stride);
pu1_dst_cb = pu1_refarray_1 + i4_tmp;
pu1_dst_cr = pu1_refarray_2 + i4_tmp;
pu1_src_1_cb = pu1_dst_cb + i1_xd_index;
pu1_src_1_cr = pu1_dst_cr + i1_xd_index;
i4_tmp = (i1_yd_index * i4_refarray_stride);
pu1_src_2_cb = pu1_dst_cb + i4_tmp;
pu1_src_2_cr = pu1_dst_cr + i4_tmp;
i4_width = MAX(u1_seg_wd, (((i4_mb_adjoin_x >> 3) ^ 1) * i4_block_size));
i4_height = MAX(u1_seg_ht, (((i4_mb_adjoin_y >> 4) ^ 1) * i4_block_size));
i4_x_off = (i4_width - u1_seg_wd);
i4_y_off = (i4_height - u1_seg_ht);
if(i1_xd_index < 0 && i1_yd_index > 0)
{
/* Quadrant 1 Processing */
/* load the pixel in the filter delay buffer */
for(i4_i = 0; i4_i < (i4_height + 1); i4_i++)
{
u1_filter_delay_buf_cb[i4_i] = *pu1_src_1_cb;
pu1_src_1_cb += i4_refarray_stride;
u1_filter_delay_buf_cr[i4_i] = *pu1_src_1_cr;
pu1_src_1_cr += i4_refarray_stride;
}
pu1_src_2_cb -= i4_x_off;
pu1_src_2_cr -= i4_x_off;
memcpy(&u1_filter_delay_buf_cb[i4_i], pu1_src_2_cb, i4_width);
memcpy(&u1_filter_delay_buf_cr[i4_i], pu1_src_2_cr, i4_width);
if(0 == i4_corner_pixel_available)
{
/* interpolate the unavailable corner pixel */
u1_filter_delay_buf_cb[i4_i - 1] =
(u1_filter_delay_buf_cb[i4_i] + u1_filter_delay_buf_cb[i4_i - 2] + 1) >> 1;
u1_filter_delay_buf_cr[i4_i - 1] =
(u1_filter_delay_buf_cr[i4_i] + u1_filter_delay_buf_cr[i4_i - 2] + 1) >> 1;
}
for(i4_i = 0; i4_i < (i4_width + i4_height - 1); i4_i++)
{
/* get the filtered output */
u1_out_buf_cb[i4_i] =
((u1_filter_delay_buf_cb[i4_i]) + (u1_filter_delay_buf_cb[i4_i + 1] * 2) +
(u1_filter_delay_buf_cb[i4_i + 2]) + 2) >>
2;
u1_out_buf_cr[i4_i] =
((u1_filter_delay_buf_cr[i4_i]) + (u1_filter_delay_buf_cr[i4_i + 1] * 2) +
(u1_filter_delay_buf_cr[i4_i + 2]) + 2) >>
2;
}
/* fill the segment with diagonal reconstructed output */
for(i4_i = 0; i4_i < u1_seg_ht; i4_i++)
{
memcpy(pu1_dst_cb, &u1_out_buf_cb[i4_x_off + i4_i], u1_seg_wd);
pu1_dst_cb += i4_refarray_stride;
memcpy(pu1_dst_cr, &u1_out_buf_cr[i4_x_off + i4_i], u1_seg_wd);
pu1_dst_cr += i4_refarray_stride;
}
}
else if(i1_xd_index > 0 && i1_yd_index > 0)
{
/* Quadrant 2 Processing */
/* load the pixel in the filter delay buffer */
memcpy(&u1_filter_delay_buf_cb[0], pu1_src_2_cb, (i4_width + 1));
memcpy(&u1_filter_delay_buf_cr[0], pu1_src_2_cr, (i4_width + 1));
for(i4_i = i4_height; i4_i > 0; i4_i--)
{
u1_filter_delay_buf_cb[i4_width + i4_i] = *pu1_src_1_cb;
pu1_src_1_cb += i4_refarray_stride;
u1_filter_delay_buf_cr[i4_width + i4_i] = *pu1_src_1_cr;
pu1_src_1_cr += i4_refarray_stride;
}
if(0 == i4_corner_pixel_available)
{
/* interpolate the unavailable corner pixel */
u1_filter_delay_buf_cb[i4_width] =
(u1_filter_delay_buf_cb[i4_width - 1] + u1_filter_delay_buf_cb[i4_width + 1] + 1) >>
1;
u1_filter_delay_buf_cr[i4_width] =
(u1_filter_delay_buf_cr[i4_width - 1] + u1_filter_delay_buf_cr[i4_width + 1] + 1) >>
1;
}
for(i4_i = 0; i4_i < (i4_width + i4_height - 1); i4_i++)
{
/* get the filtered output */
u1_out_buf_cb[i4_i] =
((u1_filter_delay_buf_cb[i4_i]) + (u1_filter_delay_buf_cb[i4_i + 1] * 2) +
(u1_filter_delay_buf_cb[i4_i + 2]) + 2) >>
2;
u1_out_buf_cr[i4_i] =
((u1_filter_delay_buf_cr[i4_i]) + (u1_filter_delay_buf_cr[i4_i + 1] * 2) +
(u1_filter_delay_buf_cr[i4_i + 2]) + 2) >>
2;
}
/* fill the segment with diagonal reconstructed output */
for(i4_i = 1; i4_i <= u1_seg_ht; i4_i++)
{
memcpy(pu1_dst_cb, &u1_out_buf_cb[i4_height - i4_i], u1_seg_wd);
pu1_dst_cb += i4_refarray_stride;
memcpy(pu1_dst_cr, &u1_out_buf_cr[i4_height - i4_i], u1_seg_wd);
pu1_dst_cr += i4_refarray_stride;
}
}
else if(i1_xd_index > 0 && i1_yd_index < 0)
{
/* Quadrant 3 Processing */
/* load the pixel in the filter delay buffer */
memcpy(&u1_filter_delay_buf_cb[0], pu1_src_2_cb, (i4_width + 1));
memcpy(&u1_filter_delay_buf_cr[0], pu1_src_2_cr, (i4_width + 1));
i4_tmp = (i4_y_off * i4_refarray_stride);
pu1_src_1_cb -= i4_tmp;
pu1_src_1_cr -= i4_tmp;
for(i4_i = 1; i4_i <= i4_height; i4_i++)
{
u1_filter_delay_buf_cb[i4_width + i4_i] = *pu1_src_1_cb;
pu1_src_1_cb += i4_refarray_stride;
u1_filter_delay_buf_cr[i4_width + i4_i] = *pu1_src_1_cr;
pu1_src_1_cr += i4_refarray_stride;
}
if(0 == i4_corner_pixel_available)
{
/* interpolate the unavailable corner pixel */
u1_filter_delay_buf_cb[i4_width] =
(u1_filter_delay_buf_cb[i4_width - 1] + u1_filter_delay_buf_cb[i4_width + 1] + 1) >>
1;
u1_filter_delay_buf_cr[i4_width] =
(u1_filter_delay_buf_cr[i4_width - 1] + u1_filter_delay_buf_cr[i4_width + 1] + 1) >>
1;
}
for(i4_i = 0; i4_i < (i4_width + i4_height - 1); i4_i++)
{
/* get the filtered output */
u1_out_buf_cb[i4_i] =
((u1_filter_delay_buf_cb[i4_i]) + (u1_filter_delay_buf_cb[i4_i + 1] * 2) +
(u1_filter_delay_buf_cb[i4_i + 2]) + 2) >>
2;
u1_out_buf_cr[i4_i] =
((u1_filter_delay_buf_cr[i4_i]) + (u1_filter_delay_buf_cr[i4_i + 1] * 2) +
(u1_filter_delay_buf_cr[i4_i + 2]) + 2) >>
2;
}
/* fill the segment with diagonal reconstructed output */
for(i4_i = 0; i4_i < u1_seg_ht; i4_i++)
{
memcpy(pu1_dst_cb, &u1_out_buf_cb[i4_y_off + i4_i], u1_seg_wd);
pu1_dst_cb += i4_refarray_stride;
memcpy(pu1_dst_cr, &u1_out_buf_cr[i4_y_off + i4_i], u1_seg_wd);
pu1_dst_cr += i4_refarray_stride;
}
}
else
{
/* Quadrant 4 Processing */
/* load the pixel in the filter delay buffer */
i4_tmp = ((u1_seg_ht - 1) * i4_refarray_stride);
pu1_src_1_cb += i4_tmp;
pu1_src_1_cr += i4_tmp;
for(i4_i = 0; i4_i <= i4_height; i4_i++)
{
u1_filter_delay_buf_cb[i4_i] = *pu1_src_1_cb;
pu1_src_1_cb -= i4_refarray_stride;
u1_filter_delay_buf_cr[i4_i] = *pu1_src_1_cr;
pu1_src_1_cr -= i4_refarray_stride;
}
pu1_src_2_cb -= i4_x_off;
pu1_src_2_cr -= i4_x_off;
memcpy(&u1_filter_delay_buf_cb[i4_i], pu1_src_2_cb, i4_width);
memcpy(&u1_filter_delay_buf_cr[i4_i], pu1_src_2_cr, i4_width);
if(0 == i4_corner_pixel_available)
{
/* interpolate the unavailable corner pixel */
u1_filter_delay_buf_cb[i4_i - 1] =
(u1_filter_delay_buf_cb[i4_i] + u1_filter_delay_buf_cb[i4_i - 2] + 1) >> 1;
u1_filter_delay_buf_cr[i4_i - 1] =
(u1_filter_delay_buf_cr[i4_i] + u1_filter_delay_buf_cr[i4_i - 2] + 1) >> 1;
}
for(i4_i = 0; i4_i < (i4_width + i4_height - 1); i4_i++)
{
/* get the filtered output */
u1_out_buf_cb[i4_i] =
((u1_filter_delay_buf_cb[i4_i]) + (u1_filter_delay_buf_cb[i4_i + 1] * 2) +
(u1_filter_delay_buf_cb[i4_i + 2]) + 2) >>
2;
u1_out_buf_cr[i4_i] =
((u1_filter_delay_buf_cr[i4_i]) + (u1_filter_delay_buf_cr[i4_i + 1] * 2) +
(u1_filter_delay_buf_cr[i4_i + 2]) + 2) >>
2;
}
/* fill the segment with diagonal reconstructed output */
for(i4_i = 1; i4_i <= u1_seg_ht; i4_i++)
{
memcpy(pu1_dst_cb, &u1_out_buf_cb[(u1_seg_ht + i4_x_off) - i4_i], u1_seg_wd);
pu1_dst_cb += i4_refarray_stride;
memcpy(pu1_dst_cr, &u1_out_buf_cr[(u1_seg_ht + i4_x_off) - i4_i], u1_seg_wd);
pu1_dst_cr += i4_refarray_stride;
}
}
}
static void isvc_diag_padding(WORD32 i4_x, WORD32 i4_y, WORD8 i1_xd_index, WORD8 i1_yd_index,
UWORD8 u1_seg_wd, UWORD8 u1_seg_ht, UWORD8 *pu1_refarray_1,
UWORD8 *pu1_refarray_2, WORD32 i4_refarray_stride,
WORD32 i4_mb_adjoin_x, WORD32 i4_mb_adjoin_y,
WORD32 i4_corner_pixel_available)
{
WORD32 i4_idx_i;
UWORD8 *pu1_src, *pu1_dst;
UNUSED(pu1_refarray_2);
UNUSED(i4_mb_adjoin_x);
UNUSED(i4_mb_adjoin_y);
UNUSED(i4_corner_pixel_available);
pu1_dst = pu1_refarray_1 + i4_x + (i4_y * i4_refarray_stride);
pu1_src = pu1_dst + i1_xd_index + (i1_yd_index * i4_refarray_stride);
i1_xd_index = MIN(i1_xd_index, MAX_PIX_FILL_LUMA);
u1_seg_wd = MIN(u1_seg_wd, MAX_PIX_FILL_LUMA);
i1_yd_index = MIN(i1_yd_index, MAX_PIX_FILL_LUMA);
u1_seg_ht = MIN(u1_seg_ht, MAX_PIX_FILL_LUMA);
pu1_dst = pu1_src - i1_xd_index - (i1_yd_index * i4_refarray_stride);
for(i4_idx_i = 0; i4_idx_i < u1_seg_ht; i4_idx_i++)
{
memset(pu1_dst, *pu1_src, u1_seg_wd);
pu1_dst += i4_refarray_stride;
}
}
static void isvc_diag_padding_chroma(WORD32 i4_x, WORD32 i4_y, WORD8 i1_xd_index, WORD8 i1_yd_index,
UWORD8 u1_seg_wd, UWORD8 u1_seg_ht, UWORD8 *pu1_refarray_1,
UWORD8 *pu1_refarray_2, WORD32 i4_refarray_stride,
WORD32 i4_mb_adjoin_x, WORD32 i4_mb_adjoin_y,
WORD32 i4_corner_pixel_available)
{
WORD32 i4_idx_i;
UWORD8 *pu1_src_cb, *pu1_dst_cb;
UWORD8 *pu1_src_cr, *pu1_dst_cr;
WORD32 i4_tmp;
UNUSED(i4_mb_adjoin_x);
UNUSED(i4_mb_adjoin_y);
UNUSED(i4_corner_pixel_available);
i4_tmp = i4_x + (i4_y * i4_refarray_stride);
pu1_dst_cb = pu1_refarray_1 + i4_tmp;
pu1_dst_cr = pu1_refarray_2 + i4_tmp;
i4_tmp = i1_xd_index + (i1_yd_index * i4_refarray_stride);
pu1_src_cb = pu1_dst_cb + i4_tmp;
pu1_src_cr = pu1_dst_cr + i4_tmp;
i1_xd_index = MIN(i1_xd_index, MAX_PIX_FILL_LUMA);
u1_seg_wd = MIN(u1_seg_wd, MAX_PIX_FILL_LUMA);
i1_yd_index = MIN(i1_yd_index, MAX_PIX_FILL_LUMA);
u1_seg_ht = MIN(u1_seg_ht, MAX_PIX_FILL_LUMA);
i4_tmp = (i1_xd_index + (i1_yd_index * i4_refarray_stride));
pu1_dst_cb = pu1_src_cb - i4_tmp;
pu1_dst_cr = pu1_src_cr - i4_tmp;
for(i4_idx_i = 0; i4_idx_i < u1_seg_ht; i4_idx_i++)
{
memset(pu1_dst_cb, *pu1_src_cb, u1_seg_wd);
pu1_dst_cb += i4_refarray_stride;
memset(pu1_dst_cr, *pu1_src_cr, u1_seg_wd);
pu1_dst_cr += i4_refarray_stride;
}
}
static PF_INTRA_SAMP_PADDING *gpf_lookup_fxns_luma[NUM_INTRA_SAMP_FXNS] = {
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
&isvc_left_right_padding,
NULL,
&isvc_diag_reconstruction,
NULL,
&isvc_left_right_padding,
NULL,
&isvc_diag_reconstruction,
NULL,
NULL,
&isvc_top_bot_padding,
&isvc_diag_reconstruction,
NULL,
NULL,
&isvc_top_bot_padding,
&isvc_diag_reconstruction,
NULL,
&isvc_left_right_padding,
&isvc_top_bot_padding,
&isvc_diag_reconstruction,
&isvc_diag_padding,
&isvc_left_right_padding,
&isvc_top_bot_padding,
&isvc_diag_reconstruction,
};
static PF_INTRA_SAMP_PADDING *gpf_lookup_fxns_chroma[NUM_INTRA_SAMP_FXNS] = {
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
&isvc_left_right_padding_chroma,
NULL,
&isvc_diag_reconstruction_chroma,
NULL,
&isvc_left_right_padding_chroma,
NULL,
&isvc_diag_reconstruction_chroma,
NULL,
NULL,
&isvc_top_bot_padding_chroma,
&isvc_diag_reconstruction_chroma,
NULL,
NULL,
&isvc_top_bot_padding_chroma,
&isvc_diag_reconstruction_chroma,
NULL,
&isvc_left_right_padding_chroma,
&isvc_top_bot_padding_chroma,
&isvc_diag_reconstruction_chroma,
&isvc_diag_padding_chroma,
&isvc_left_right_padding_chroma,
&isvc_top_bot_padding_chroma,
&isvc_diag_reconstruction_chroma,
};
static void isvc_get_ref_layer_avlblty_dyadic(WORD8 *pi1_ref_mb_modes, WORD32 i4_ref_mode_stride,
WORD32 i4_element_size, WORD32 i4_ref_mb_x,
WORD32 i4_ref_mb_y, WORD32 *pi4_avlblty,
WORD8 i1_curr_slice_id, WORD8 i1_cons_intr_samp_flag)
{
WORD8 i1_mb_mode;
pi1_ref_mb_modes += (i4_ref_mb_y * i4_ref_mode_stride * i4_element_size);
pi1_ref_mb_modes += (i4_ref_mb_x * i4_element_size);
i1_mb_mode = *pi1_ref_mb_modes;
i1_mb_mode = (i1_mb_mode < 0) ? i1_mb_mode : SVC_EXTRACT_MB_MODE(*pi1_ref_mb_modes);
if(i1_mb_mode <= SVC_INTER_MB)
{
*pi4_avlblty = 0;
}
else
{
*pi4_avlblty = 1;
}
if(1 == i1_cons_intr_samp_flag)
{
if(1 == *pi4_avlblty)
{
if(i1_mb_mode != i1_curr_slice_id)
{
*pi4_avlblty = 0;
}
}
}
}
/*****************************************************************************/
/* */
/* Function Name : isvc_diagonal_construct_dyadic */
/* */
/* Description : This function fills the unavaible pixels in the reference*/
/* array with diagonally constructed samples */
/* Inputs : i4_x :current position in reference array X to be filled */
/* i4_y :current position in reference array Y to be filled */
/* i4_xd_index : diagonal index in horizontal direction */
/* i4_yd_index : diagonal index in vertical direction */
/* pu1_refarray : popinter to reference array */
/* i4_refarray_wd: width of the reference array */
/* Globals : none */
/* Processing : Fills the sample which is unavailable with filtered */
/* diagonal samples */
/* Outputs : pixel filled */
/* Returns : constructed pixel */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 03 12 2010 Nithya creation */
/* */
/*****************************************************************************/
static UWORD8 isvc_diagonal_construct_dyadic(WORD32 i4_x, WORD32 i4_y, WORD32 i4_xd_index,
WORD32 i4_yd_index, UWORD8 *pu1_refarray,
WORD32 i4_refarray_wd)
{
WORD32 i4_diff_hor_ver, i4_sgn_xy;
WORD32 i4_xc, i4_yc;
WORD32 i4_samp1, i4_samp2, i4_samp3;
WORD32 i4_result;
UWORD8 *pu1_tmp;
i4_diff_hor_ver = ABS(i4_xd_index) - ABS(i4_yd_index);
i4_sgn_xy = SIGN(i4_xd_index * i4_yd_index);
if(i4_diff_hor_ver > 0)
{
i4_xc = i4_x - (i4_sgn_xy * i4_yd_index);
i4_yc = i4_y - i4_yd_index;
pu1_tmp = pu1_refarray + (i4_yc * i4_refarray_wd);
i4_samp1 = pu1_tmp[i4_xc - 1];
i4_samp2 = pu1_tmp[i4_xc];
i4_samp3 = pu1_tmp[i4_xc + 1];
}
else if(i4_diff_hor_ver < 0)
{
i4_xc = i4_x - i4_xd_index;
i4_yc = i4_y - (i4_sgn_xy * i4_xd_index);
pu1_tmp = pu1_refarray + ((i4_yc - 1) * i4_refarray_wd);
i4_samp1 = pu1_tmp[i4_xc];
pu1_tmp += i4_refarray_wd;
i4_samp2 = pu1_tmp[i4_xc];
pu1_tmp += i4_refarray_wd;
i4_samp3 = pu1_tmp[i4_xc];
}
else
{
WORD32 i4_ref_xd, i4_ref_yd;
i4_ref_xd = i4_x - i4_xd_index;
i4_ref_yd = i4_y - i4_yd_index;
i4_xc = i4_ref_xd + SIGN(i4_xd_index);
i4_yc = i4_ref_yd + SIGN(i4_yd_index);
pu1_tmp = pu1_refarray + (i4_ref_yd * i4_refarray_wd);
i4_samp1 = pu1_tmp[i4_xc];
i4_samp2 = pu1_tmp[i4_ref_xd];
pu1_tmp = pu1_refarray + (i4_yc * i4_refarray_wd);
i4_samp3 = pu1_tmp[i4_ref_xd];
}
i4_result = (i4_samp1 + (i4_samp2 << 1) + i4_samp3 + 2) >> 2;
pu1_tmp = pu1_refarray + (i4_y * i4_refarray_wd);
/* Store the filled sample */
pu1_tmp[i4_x] = i4_result;
return i4_result;
}
/*****************************************************************************/
/* */
/* Function Name : isvc_corner_samp_dyadic */
/* */
/* Description : This function fills the corner sample in the reference */
/* array with diagonally constructed samples */
/* Inputs : i4_x :current position in reference array X to be filled */
/* i4_y :current position in reference array Y to be filled */
/* i4_xd_index : diagonal index in horizontal direction */
/* i4_yd_index : diagonal index in vertical direction */
/* pu1_refarray_y : pointer to luma reference array */
/* pu1_refarray_cb : pointer to Cb reference array */
/* pu1_refarray_cr : pointer to Cr reference array */
/* Globals : none */
/* Processing : Fills the sample which is unavailable with filtered */
/* diagonal samples */
/* Outputs : pixel filled */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 03 12 2010 Nithya creation */
/* */
/*****************************************************************************/
static void isvc_corner_samp_dyadic(WORD32 i4_x, WORD32 i4_y, WORD32 i4_xD, WORD32 i4_yD,
UWORD8 *pu1_refarray_y, UWORD8 *pu1_refarray_cb,
UWORD8 *pu1_refarray_cr)
{
WORD32 i4_ref_xD, i4_ref_yD;
WORD32 i4_c_ref_xD, i4_c_ref_yD;
WORD32 i4_xc, i4_yc;
WORD32 i4_c_xc, i4_c_yc;
WORD32 i4_samp1, i4_samp2;
UWORD8 *pu1_tmp_src, *pu1_tmp_dst;
i4_ref_xD = i4_x - i4_xD;
i4_ref_yD = i4_y - i4_yD;
i4_xc = i4_ref_xD + SIGN(i4_xD);
i4_yc = i4_ref_yD + SIGN(i4_yD);
/* Luma */
pu1_tmp_src = pu1_refarray_y + (i4_yc * DYADIC_REF_W_Y);
i4_samp1 = pu1_tmp_src[i4_ref_xD];
pu1_tmp_src = pu1_refarray_y + (i4_ref_yD * DYADIC_REF_W_Y);
i4_samp2 = pu1_tmp_src[i4_xc];
pu1_tmp_dst = pu1_tmp_src;
pu1_tmp_dst[i4_ref_xD] = (i4_samp1 + i4_samp2 + 1) >> 1;
/* Chroma */
i4_c_ref_xD = i4_ref_xD >> 1;
i4_c_ref_yD = i4_ref_yD >> 1;
i4_c_xc = i4_c_ref_xD + SIGN(i4_xD);
i4_c_yc = i4_c_ref_yD + SIGN(i4_yD);
/* Cb */
pu1_tmp_src = pu1_refarray_cb + (i4_c_yc * DYADIC_REF_W_C);
i4_samp1 = pu1_tmp_src[i4_c_ref_xD];
pu1_tmp_src = pu1_refarray_cb + (i4_c_ref_yD * DYADIC_REF_W_C);
i4_samp2 = pu1_tmp_src[i4_c_xc];
pu1_tmp_dst = pu1_tmp_src;
pu1_tmp_dst[i4_c_ref_xD] = (i4_samp1 + i4_samp2 + 1) >> 1;
/* Cr */
pu1_tmp_src = pu1_refarray_cr + (i4_c_yc * DYADIC_REF_W_C);
i4_samp1 = pu1_tmp_src[i4_c_ref_xD];
pu1_tmp_src = pu1_refarray_cr + (i4_c_ref_yD * DYADIC_REF_W_C);
i4_samp2 = pu1_tmp_src[i4_c_xc];
pu1_tmp_dst = pu1_tmp_src;
pu1_tmp_dst[i4_c_ref_xD] = (i4_samp1 + i4_samp2 + 1) >> 1;
}
/*****************************************************************************/
/* */
/* Function Name : isvc_reflayer_construction_dyadic */
/* */
/* Description : This function constructs the reference array buffer */
/* for dyadic cases used for intra resampling of a */
/* component in an MB */
/* */
/* Inputs : pv_intra_samp_ctxt : intra sampling context */
/* ps_ref_mb_mode_map : ref layer mb mode buffer desc */
/* pu1_inp_luma : luma input (reference layer data) */
/* pu1_inp_chroma : chroma input (reference layer data) */
/* i4_inp_luma_stride : luma input buffer stride */
/* i4_inp_chroma_stride : chroma input buffer stride */
/* i4_top : indicates whether the core 8x8 reference block */
/* is one of 0 and 1 or one of 2 and 3 */
/* i4_left : indicates whether the core 8x8 reference block */
/* is one of 0 and 2 or one of 1 and 3 */
/* ps_ref_mb_coord : coordinates of the reference MB */
/* Globals : none */
/* Processing : it fills the reference layer data if they are falling in */
/* INTRA MB region. If all the pixels are not filled it */
/* calls the border extension algorithm to fill them */
/* Outputs : none */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 02 12 2010 Nithya creation */
/* */
/*****************************************************************************/
static void isvc_reflayer_construction_dyadic(void *pv_intra_samp_ctxt,
mem_element_t *ps_ref_mb_mode_map,
UWORD8 *pu1_inp_luma, UWORD8 *pu1_inp_chroma,
WORD32 i4_inp_luma_stride,
WORD32 i4_inp_chroma_stride, WORD32 i4_top,
WORD32 i4_left, UWORD16 u2_mb_x, UWORD16 u2_mb_y)
{
enum
{
TOPLEFT_MASK = 1,
LEFT_MASK = 2,
TOP_MASK = 4,
TOPRIGHT_MASK = 8,
BOTTOMLEFT_MASK = 16
};
WORD32 i4_x, i4_y;
WORD32 i4_x0, i4_y0;
WORD32 i4_xc0, i4_yc0;
WORD32 i4_ref_xD, i4_ref_yD;
WORD32 i4_c_ref_xD, i4_c_ref_yD;
intra_sampling_ctxt_t *ps_ctxt;
intra_samp_lyr_ctxt *ps_lyr_ctxt;
WORD8 *pi1_ref_mb_modes;
WORD32 i4_ref_mode_stride;
WORD32 i4_element_size;
WORD32 i4_mbaddr_y;
WORD32 i4_mbaddr_x;
WORD32 i4_refarray_wd_luma, i4_refarray_wd_chroma;
WORD32 i4_refarray_ht_luma, i4_refarray_ht_chroma;
WORD32 i4_avlblty;
WORD8 i1_cons_intr_samp_flag;
WORD8 i1_slice_id;
WORD8 i1_corner_samp_avlbl_flag;
UWORD8 u1_ny_avlblty;
UWORD8 *pu1_refarray_luma;
UWORD8 *pu1_refarray_cb, *pu1_refarray_cr;
ps_ctxt = (intra_sampling_ctxt_t *) pv_intra_samp_ctxt;
ps_lyr_ctxt = &ps_ctxt->as_res_lyrs[ps_ctxt->i4_res_lyr_id];
pi1_ref_mb_modes = (WORD8 *) ps_ref_mb_mode_map->pv_buffer;
i4_ref_mode_stride = ps_ref_mb_mode_map->i4_num_element_stride;
i4_element_size = ps_ref_mb_mode_map->i4_element_size;
i1_cons_intr_samp_flag = ps_lyr_ctxt->i1_constrained_intra_rsmpl_flag;
ASSERT(NULL != pi1_ref_mb_modes);
pu1_refarray_luma = ps_ctxt->pu1_refarray_buffer;
pu1_refarray_cb = ps_ctxt->pu1_refarray_cb;
pu1_refarray_cr = ps_ctxt->pu1_refarray_cr;
i4_mbaddr_x = u2_mb_x;
i4_mbaddr_y = u2_mb_y;
i4_refarray_wd_luma = 20;
i4_refarray_ht_luma = 20;
i4_refarray_wd_chroma = i4_refarray_wd_luma >> 1;
i4_refarray_ht_chroma = i4_refarray_ht_luma >> 1;
if(1 == i1_cons_intr_samp_flag)
{
WORD8 *pi1_ref_mb_mode_tmp;
WORD8 i1_mb_mode;
pi1_ref_mb_mode_tmp = pi1_ref_mb_modes;
pi1_ref_mb_mode_tmp += (i4_mbaddr_y * i4_ref_mode_stride * i4_element_size);
pi1_ref_mb_mode_tmp += (i4_mbaddr_x * i4_element_size);
i1_mb_mode = *pi1_ref_mb_mode_tmp;
i1_mb_mode = (i1_mb_mode < 0) ? i1_mb_mode : SVC_EXTRACT_MB_MODE(*pi1_ref_mb_mode_tmp);
/* The reference layer MB should be intra */
ASSERT(i1_mb_mode >= 0);
i1_slice_id = i1_mb_mode;
}
else
{
i1_slice_id = -1;
}
{
UWORD8 *pu1_src, *pu1_dst;
WORD32 i4_src_stride, i4_dst_stride;
/* Copy luma */
i4_src_stride = i4_inp_luma_stride;
i4_dst_stride = DYADIC_REF_W_Y;
pu1_src = pu1_inp_luma;
pu1_dst = pu1_refarray_luma;
isvc_copy_data(pu1_src, i4_src_stride, pu1_dst, i4_dst_stride, i4_refarray_wd_luma,
i4_refarray_ht_luma);
i4_src_stride = i4_inp_chroma_stride;
i4_dst_stride = DYADIC_REF_W_C;
pu1_src = pu1_inp_chroma;
isvc_copy_data_semiplanr(pu1_src, i4_src_stride, pu1_refarray_cb, pu1_refarray_cr,
i4_dst_stride, i4_refarray_wd_chroma, i4_refarray_ht_chroma);
}
{
/* mb_x + left, mb_y + top */
isvc_get_ref_layer_avlblty_dyadic(pi1_ref_mb_modes, i4_ref_mode_stride, i4_element_size,
i4_mbaddr_x + i4_left, i4_mbaddr_y + i4_top, &i4_avlblty,
i1_slice_id, i1_cons_intr_samp_flag);
u1_ny_avlblty = i4_avlblty;
/* mb_x + left, mb_y */
isvc_get_ref_layer_avlblty_dyadic(pi1_ref_mb_modes, i4_ref_mode_stride, i4_element_size,
i4_mbaddr_x + i4_left, i4_mbaddr_y, &i4_avlblty,
i1_slice_id, i1_cons_intr_samp_flag);
u1_ny_avlblty += (i4_avlblty << 1);
/* mb_x, mb_y + top */
isvc_get_ref_layer_avlblty_dyadic(pi1_ref_mb_modes, i4_ref_mode_stride, i4_element_size,
i4_mbaddr_x, i4_mbaddr_y + i4_top, &i4_avlblty,
i1_slice_id, i1_cons_intr_samp_flag);
u1_ny_avlblty += (i4_avlblty << 2);
/* mb_x - left, mb_y + top */
isvc_get_ref_layer_avlblty_dyadic(pi1_ref_mb_modes, i4_ref_mode_stride, i4_element_size,
i4_mbaddr_x - i4_left, i4_mbaddr_y + i4_top, &i4_avlblty,
i1_slice_id, i1_cons_intr_samp_flag);
u1_ny_avlblty += (i4_avlblty << 3);
/* mb_x + left, mb_y - top */
isvc_get_ref_layer_avlblty_dyadic(pi1_ref_mb_modes, i4_ref_mode_stride, i4_element_size,
i4_mbaddr_x + i4_left, i4_mbaddr_y - i4_top, &i4_avlblty,
i1_slice_id, i1_cons_intr_samp_flag);
u1_ny_avlblty += (i4_avlblty << 4);
}
if((TOP_MASK | TOPLEFT_MASK | LEFT_MASK) == u1_ny_avlblty)
{
return;
}
if(!(u1_ny_avlblty & (TOP_MASK | TOPLEFT_MASK | LEFT_MASK)))
{
UWORD8 *pu1_tmp_src, *pu1_tmp_dst1, *pu1_tmp_dst2;
UWORD8 *pu1_tmp_src1, *pu1_tmp_src2;
/* Set the 4 corner samples to (x-xD,y-yD) */
i4_x0 = 9 + (i4_left << 3) + i4_left;
i4_y0 = 9 + (i4_top << 3) + i4_top;
i4_ref_xD = i4_x0 - i4_left - (i4_left >> 1);
i4_ref_yD = i4_y0 - i4_top - (i4_top >> 1);
pu1_tmp_src = pu1_refarray_luma + (i4_ref_yD * DYADIC_REF_W_Y);
pu1_tmp_dst1 = pu1_refarray_luma + (i4_y0 * DYADIC_REF_W_Y);
pu1_tmp_dst2 = pu1_tmp_dst1 + DYADIC_REF_W_Y;
pu1_tmp_dst1[i4_x0] = pu1_tmp_src[i4_ref_xD];
pu1_tmp_dst1[i4_x0 + 1] = pu1_tmp_src[i4_ref_xD];
pu1_tmp_dst2[i4_x0] = pu1_tmp_src[i4_ref_xD];
pu1_tmp_dst2[i4_x0 + 1] = pu1_tmp_src[i4_ref_xD];
/* Set the corner sample of Cb and Cr to (x-xD,y-yD) */
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_c_ref_yD = i4_ref_yD >> 1;
i4_c_ref_xD = i4_ref_xD >> 1;
pu1_tmp_src1 = pu1_refarray_cb + (i4_c_ref_yD * DYADIC_REF_W_C);
pu1_tmp_dst1 = pu1_refarray_cb + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst1[i4_xc0] = pu1_tmp_src1[i4_c_ref_xD];
pu1_tmp_src2 = pu1_refarray_cr + (i4_c_ref_yD * DYADIC_REF_W_C);
pu1_tmp_dst2 = pu1_refarray_cr + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst2[i4_xc0] = pu1_tmp_src2[i4_c_ref_xD];
}
if(!(u1_ny_avlblty & (TOP_MASK | TOPLEFT_MASK)))
{
UWORD8 *pu1_tmp_src, *pu1_tmp_dst1, *pu1_tmp_dst2;
UWORD8 *pu1_tmp_src1, *pu1_tmp_src2;
/* Copy (x0,ref_yD), (x0+1,ref_yD), ..., (x0+7,ref_yD) to */
/* (x0,y0), (x0+1,y0), ..., (x0+7,y0) and */
/* (x0,y0+1), (x0+1,y0+1), ..., (x0+7,y0+1) */
i4_x0 = 2;
i4_y0 = 9 + (i4_top << 3) + i4_top;
if(i4_left > 0)
{
i4_x0 += 8;
}
i4_ref_yD = i4_y0 - i4_top - (i4_top >> 1);
pu1_tmp_src = pu1_refarray_luma + (i4_ref_yD * DYADIC_REF_W_Y);
pu1_tmp_dst1 = pu1_refarray_luma + (i4_y0 * DYADIC_REF_W_Y);
pu1_tmp_dst2 = pu1_tmp_dst1 + DYADIC_REF_W_Y;
for(i4_x = i4_x0; i4_x < i4_x0 + 8; i4_x++)
{
pu1_tmp_dst1[i4_x] = pu1_tmp_src[i4_x];
pu1_tmp_dst2[i4_x] = pu1_tmp_src[i4_x];
}
/* Cb and Cr copy */
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_c_ref_yD = i4_ref_yD >> 1;
pu1_tmp_src1 = pu1_refarray_cb + (i4_c_ref_yD * DYADIC_REF_W_C);
pu1_tmp_dst1 = pu1_refarray_cb + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_src2 = pu1_refarray_cr + (i4_c_ref_yD * DYADIC_REF_W_C);
pu1_tmp_dst2 = pu1_refarray_cr + (i4_yc0 * DYADIC_REF_W_C);
for(i4_x = i4_xc0; i4_x < i4_xc0 + 4; i4_x++)
{
pu1_tmp_dst1[i4_x] = pu1_tmp_src1[i4_x];
pu1_tmp_dst2[i4_x] = pu1_tmp_src2[i4_x];
}
}
if(!(u1_ny_avlblty & (TOPLEFT_MASK | LEFT_MASK)))
{
UWORD8 *pu1_tmp_src, *pu1_tmp_dst1, *pu1_tmp_dst2;
UWORD8 *pu1_tmp_src1, *pu1_tmp_src2;
/* Copy (ref_xD,y0) to (x0,y0) and (x0+1,y0); */
/* copy (ref_xD,y0+1) to (x0,y0+1) and (x0+1,y0+1); ... ;*/
/* copy (ref_xD,y0+7) to (x0,y0+7) and (x0+1,y0+7) */
i4_x0 = 9 + (i4_left << 3) + i4_left;
i4_y0 = 2;
if(i4_top > 0)
{
i4_y0 += 8;
}
i4_ref_xD = i4_x0 - i4_left - (i4_left >> 1);
pu1_tmp_src = pu1_refarray_luma + (i4_y0 * DYADIC_REF_W_Y);
pu1_tmp_dst1 = pu1_tmp_src;
for(i4_y = i4_y0; i4_y < i4_y0 + 8; i4_y++)
{
pu1_tmp_dst1[i4_x0] = pu1_tmp_src[i4_ref_xD];
pu1_tmp_dst1[i4_x0 + 1] = pu1_tmp_src[i4_ref_xD];
pu1_tmp_src += DYADIC_REF_W_Y;
pu1_tmp_dst1 += DYADIC_REF_W_Y;
}
/* Cb and Cr copy */
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_c_ref_xD = i4_ref_xD >> 1;
pu1_tmp_src1 = pu1_refarray_cb + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst1 = pu1_tmp_src1;
pu1_tmp_src2 = pu1_refarray_cr + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst2 = pu1_tmp_src2;
for(i4_y = i4_yc0; i4_y < i4_yc0 + 4; i4_y++)
{
pu1_tmp_dst1[i4_xc0] = pu1_tmp_src1[i4_c_ref_xD];
pu1_tmp_dst2[i4_xc0] = pu1_tmp_src2[i4_c_ref_xD];
pu1_tmp_src1 += DYADIC_REF_W_C;
pu1_tmp_src2 += DYADIC_REF_W_C;
pu1_tmp_dst1 += DYADIC_REF_W_C;
pu1_tmp_dst2 += DYADIC_REF_W_C;
}
}
if(!(u1_ny_avlblty & TOP_MASK))
{
if(!(u1_ny_avlblty & TOPRIGHT_MASK))
{
UWORD8 *pu1_tmp_src, *pu1_tmp_dst;
i4_x0 = 9 - i4_left;
i4_y0 = 9 + (i4_top << 3) + i4_top;
i4_ref_yD = i4_y0 - i4_top - (i4_top >> 1);
/* Copy (x0,ref_yD) and (x0+1,ref_yD) to (x0,y0) and (x0+1,y0), and */
/* to (x0,y0+1) and (x0+1,y0+1) */
pu1_tmp_src = pu1_refarray_luma + (i4_ref_yD * DYADIC_REF_W_Y);
pu1_tmp_dst = pu1_refarray_luma + (i4_y0 * DYADIC_REF_W_Y);
pu1_tmp_dst[i4_x0] = pu1_tmp_src[i4_x0];
pu1_tmp_dst[i4_x0 + 1] = pu1_tmp_src[i4_x0 + 1];
pu1_tmp_dst += DYADIC_REF_W_Y;
pu1_tmp_dst[i4_x0] = pu1_tmp_src[i4_x0];
pu1_tmp_dst[i4_x0 + 1] = pu1_tmp_src[i4_x0 + 1];
/* Cb copy */
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_c_ref_yD = i4_ref_yD >> 1;
pu1_tmp_src = pu1_refarray_cb + (i4_c_ref_yD * DYADIC_REF_W_C);
pu1_tmp_dst = pu1_refarray_cb + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst[i4_xc0] = pu1_tmp_src[i4_xc0];
/* Cr copy */
pu1_tmp_src = pu1_refarray_cr + (i4_c_ref_yD * DYADIC_REF_W_C);
pu1_tmp_dst = pu1_refarray_cr + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst[i4_xc0] = pu1_tmp_src[i4_xc0];
}
else
{
WORD32 i4_xD, i4_yD;
WORD32 i4_c_xD, i4_c_yD;
isvc_get_ref_layer_avlblty_dyadic(pi1_ref_mb_modes, i4_ref_mode_stride, i4_element_size,
i4_mbaddr_x - i4_left, i4_mbaddr_y, &i4_avlblty,
i1_slice_id, i1_cons_intr_samp_flag);
i1_corner_samp_avlbl_flag = i4_avlblty;
i4_x0 = 9 - i4_left;
i4_y0 = 9 + (i4_top << 3) + i4_top;
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_ref_yD = i4_y0 - i4_top - (i4_top >> 1);
i4_ref_xD = i4_x0 - (i4_left * 7) - (i4_left >> 1);
i4_c_ref_xD = i4_ref_xD >> 1;
i4_c_ref_yD = i4_ref_yD >> 1;
i4_xD = i4_x0 - i4_ref_xD;
i4_yD = i4_y0 - i4_ref_yD;
i4_c_xD = i4_xc0 - i4_c_ref_xD;
i4_c_yD = i4_yc0 - i4_c_ref_yD;
/* Fill corner sample if not available */
if(!i1_corner_samp_avlbl_flag)
{
isvc_corner_samp_dyadic(i4_x0, i4_y0, i4_xD, i4_yD, pu1_refarray_luma,
pu1_refarray_cb, pu1_refarray_cr);
}
/* Call diagonal construction for luma */
for(i4_y = i4_y0; i4_y < i4_y0 + 2; i4_y++)
{
for(i4_x = i4_x0; i4_x < i4_x0 + 2; i4_x++)
{
isvc_diagonal_construct_dyadic(i4_x, i4_y, i4_xD, i4_yD, pu1_refarray_luma,
DYADIC_REF_W_Y);
i4_xD++;
}
i4_yD++;
i4_xD -= 2;
}
/* Call diagonal construction for chroma */
isvc_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD, pu1_refarray_cb,
DYADIC_REF_W_C);
isvc_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD, pu1_refarray_cr,
DYADIC_REF_W_C);
}
}
if(!(u1_ny_avlblty & LEFT_MASK))
{
if(!(u1_ny_avlblty & BOTTOMLEFT_MASK))
{
UWORD8 *pu1_tmp_src, *pu1_tmp_dst;
i4_x0 = 9 + (i4_left << 3) + i4_left;
i4_y0 = 9 - i4_top;
i4_ref_xD = i4_x0 - i4_left - (i4_left >> 1);
/* Copy (ref_xD,y0) to (x0,y0), (x0+1,y0), and */
/* copy (ref_xD,y0+1) to (x0,y0+1), (x0+1,y0+1) */
pu1_tmp_src = pu1_refarray_luma + (i4_y0 * DYADIC_REF_W_Y);
pu1_tmp_dst = pu1_tmp_src;
pu1_tmp_dst[i4_x0] = pu1_tmp_src[i4_ref_xD];
pu1_tmp_dst[i4_x0 + 1] = pu1_tmp_src[i4_ref_xD];
pu1_tmp_src += DYADIC_REF_W_Y;
pu1_tmp_dst += DYADIC_REF_W_Y;
pu1_tmp_dst[i4_x0] = pu1_tmp_src[i4_ref_xD];
pu1_tmp_dst[i4_x0 + 1] = pu1_tmp_src[i4_ref_xD];
/* Cb copy */
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_c_ref_xD = i4_ref_xD >> 1;
pu1_tmp_src = pu1_refarray_cb + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst = pu1_tmp_src;
pu1_tmp_dst[i4_xc0] = pu1_tmp_src[i4_c_ref_xD];
/* Cr copy */
pu1_tmp_src = pu1_refarray_cr + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst = pu1_tmp_src;
pu1_tmp_dst[i4_xc0] = pu1_tmp_src[i4_c_ref_xD];
}
else
{
WORD32 i4_xD, i4_yD;
WORD32 i4_c_xD, i4_c_yD;
isvc_get_ref_layer_avlblty_dyadic(pi1_ref_mb_modes, i4_ref_mode_stride, i4_element_size,
i4_mbaddr_x, i4_mbaddr_y - i4_top, &i4_avlblty,
i1_slice_id, i1_cons_intr_samp_flag);
i1_corner_samp_avlbl_flag = i4_avlblty;
i4_x0 = 9 + (i4_left << 3) + i4_left;
i4_y0 = 9 - i4_top;
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_ref_xD = i4_x0 - i4_left - (i4_left >> 1);
i4_ref_yD = i4_y0 - (i4_top * 7) - (i4_top >> 1);
i4_c_ref_xD = i4_ref_xD >> 1;
i4_c_ref_yD = i4_ref_yD >> 1;
i4_xD = i4_x0 - i4_ref_xD;
i4_yD = i4_y0 - i4_ref_yD;
i4_c_xD = i4_xc0 - i4_c_ref_xD;
i4_c_yD = i4_yc0 - i4_c_ref_yD;
if(!i1_corner_samp_avlbl_flag)
{
isvc_corner_samp_dyadic(i4_x0, i4_y0, i4_xD, i4_yD, pu1_refarray_luma,
pu1_refarray_cb, pu1_refarray_cr);
}
/* Call diagonal consrtuction for luma */
for(i4_y = i4_y0; i4_y < i4_y0 + 2; i4_y++)
{
for(i4_x = i4_x0; i4_x < i4_x0 + 2; i4_x++)
{
isvc_diagonal_construct_dyadic(i4_x, i4_y, i4_xD, i4_yD, pu1_refarray_luma,
DYADIC_REF_W_Y);
i4_xD++;
}
i4_yD++;
i4_xD -= 2;
}
/* Call diagonal construction for chroma */
isvc_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD, pu1_refarray_cb,
DYADIC_REF_W_C);
isvc_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD, pu1_refarray_cr,
DYADIC_REF_W_C);
}
}
if(u1_ny_avlblty & TOPLEFT_MASK)
{
if(!(u1_ny_avlblty & LEFT_MASK))
{
WORD32 i4_xD, i4_yD;
WORD32 i4_c_xD, i4_c_yD;
UWORD8 *pu1_tmp_dst;
UWORD8 u1_filled_samp;
i1_corner_samp_avlbl_flag = (u1_ny_avlblty & 4) >> 2;
i4_x0 = 9 + (i4_left << 3) + i4_left;
i4_y0 = 2;
i4_ref_yD = 1;
if(i4_top > 0)
{
i4_y0 += 8;
i4_ref_yD = 18;
}
i4_ref_xD = i4_x0 - (i4_left) - (i4_left >> 1);
i4_xD = i4_x0 - i4_ref_xD;
i4_yD = i4_y0 - i4_ref_yD;
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_c_ref_xD = i4_ref_xD >> 1;
i4_c_ref_yD = i4_ref_yD >> 1;
i4_c_xD = i4_xc0 - i4_c_ref_xD;
i4_c_yD = i4_yc0 - i4_c_ref_yD;
/* Fill corner sample if unavailable */
if(!i1_corner_samp_avlbl_flag)
{
isvc_corner_samp_dyadic(i4_x0, i4_y0, i4_xD, i4_yD, pu1_refarray_luma,
pu1_refarray_cb, pu1_refarray_cr);
}
/* Call the diagonal construction for the 8 rows */
if(i4_top == i4_left)
{
/* if top * left = 1 */
/* (x0,y0) */
u1_filled_samp = isvc_diagonal_construct_dyadic(i4_x0, i4_y0, i4_xD, i4_yD,
pu1_refarray_luma, DYADIC_REF_W_Y);
pu1_tmp_dst = pu1_refarray_luma + (i4_y0 * DYADIC_REF_W_Y);
/* (x0,y0+1), ..., (x0,y0+7) and */
/* (x0+1,y0), ..., (x0+1,y0+6) */
for(i4_y = i4_y0 + 1; i4_y < i4_y0 + 8; i4_y++)
{
i4_yD++;
u1_filled_samp = isvc_diagonal_construct_dyadic(
i4_x0, i4_y, i4_xD, i4_yD, pu1_refarray_luma, DYADIC_REF_W_Y);
pu1_tmp_dst[i4_x0 + 1] = u1_filled_samp;
pu1_tmp_dst += DYADIC_REF_W_Y;
}
/* (x0+1,y0+7) */
u1_filled_samp = isvc_diagonal_construct_dyadic(
i4_x0 + 1, i4_y0 + 7, i4_xD + 1, i4_yD, pu1_refarray_luma, DYADIC_REF_W_Y);
}
else
{
/* top * left = -1 */
/* (x0+1,y0) */
u1_filled_samp = isvc_diagonal_construct_dyadic(i4_x0 + 1, i4_y0, i4_xD + 1, i4_yD,
pu1_refarray_luma, DYADIC_REF_W_Y);
pu1_tmp_dst = pu1_refarray_luma + (i4_y0 * DYADIC_REF_W_Y);
/* (x0,y0), ..., (x0,y0+6) and */
/* (x0+1,y0+1), ..., (x0+1,y0+7) */
for(i4_y = i4_y0; i4_y < i4_y0 + 7; i4_y++)
{
u1_filled_samp = isvc_diagonal_construct_dyadic(
i4_x0, i4_y, i4_xD, i4_yD, pu1_refarray_luma, DYADIC_REF_W_Y);
pu1_tmp_dst += DYADIC_REF_W_Y;
pu1_tmp_dst[i4_x0 + 1] = u1_filled_samp;
i4_yD++;
}
/* (x0,y0+7) */
u1_filled_samp = isvc_diagonal_construct_dyadic(i4_x0, i4_y0 + 7, i4_xD, i4_yD,
pu1_refarray_luma, DYADIC_REF_W_Y);
}
/* For Cb and Cr */
for(i4_y = i4_yc0; i4_y < i4_yc0 + 4; i4_y++)
{
u1_filled_samp = isvc_diagonal_construct_dyadic(i4_xc0, i4_y, i4_c_xD, i4_c_yD,
pu1_refarray_cb, DYADIC_REF_W_C);
u1_filled_samp = isvc_diagonal_construct_dyadic(i4_xc0, i4_y, i4_c_xD, i4_c_yD,
pu1_refarray_cr, DYADIC_REF_W_C);
i4_c_yD++;
}
}
if(!(u1_ny_avlblty & TOP_MASK))
{
WORD32 i4_xD, i4_yD;
WORD32 i4_c_xD, i4_c_yD;
UWORD8 *pu1_tmp_dst;
UWORD8 u1_filled_samp;
i1_corner_samp_avlbl_flag = (u1_ny_avlblty & 2) >> 1;
i4_y0 = 9 + (i4_top << 3) + (i4_top);
i4_x0 = 2;
i4_ref_xD = 1;
if(i4_left > 0)
{
i4_x0 += 8;
i4_ref_xD = 18;
}
i4_ref_yD = i4_y0 - i4_top - (i4_top >> 1);
i4_xD = i4_x0 - i4_ref_xD;
i4_yD = i4_y0 - i4_ref_yD;
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_c_ref_xD = i4_ref_xD >> 1;
i4_c_ref_yD = i4_ref_yD >> 1;
i4_c_xD = i4_xc0 - i4_c_ref_xD;
i4_c_yD = i4_yc0 - i4_c_ref_yD;
if(!i1_corner_samp_avlbl_flag)
{
isvc_corner_samp_dyadic(i4_x0, i4_y0, i4_xD, i4_yD, pu1_refarray_luma,
pu1_refarray_cb, pu1_refarray_cr);
}
/* Call the diagonal construction for the 2 rows */
if(i4_top == i4_left)
{
/* if top * left = 1 */
/* (x0,y0) */
u1_filled_samp = isvc_diagonal_construct_dyadic(i4_x0, i4_y0, i4_xD, i4_yD,
pu1_refarray_luma, DYADIC_REF_W_Y);
pu1_tmp_dst = pu1_refarray_luma + ((i4_y0 + 1) * DYADIC_REF_W_Y);
/* (x0+1,y0), ..., (x0+7,y0) and */
/* (x0,y0+1), ..., (x0+6,y0+1) */
for(i4_x = i4_x0 + 1; i4_x < i4_x0 + 8; i4_x++)
{
i4_xD++;
u1_filled_samp = isvc_diagonal_construct_dyadic(
i4_x, i4_y0, i4_xD, i4_yD, pu1_refarray_luma, DYADIC_REF_W_Y);
pu1_tmp_dst[i4_x - 1] = u1_filled_samp;
}
/* (x0+7,y0+1) */
u1_filled_samp = isvc_diagonal_construct_dyadic(
i4_x0 + 7, i4_y0 + 1, i4_xD, i4_yD + 1, pu1_refarray_luma, DYADIC_REF_W_Y);
}
else
{
/* top * left = -1 */
/* (x0,y0+1) */
u1_filled_samp = isvc_diagonal_construct_dyadic(i4_x0, i4_y0 + 1, i4_xD, i4_yD + 1,
pu1_refarray_luma, DYADIC_REF_W_Y);
pu1_tmp_dst = pu1_refarray_luma + ((i4_y0 + 1) * DYADIC_REF_W_Y);
/* (x0,y0), ..., (x0,y0+6) and */
/* (x0+1,y0+1), ..., (x0+1,y0+7) */
for(i4_x = i4_x0; i4_x < i4_x0 + 7; i4_x++)
{
u1_filled_samp = isvc_diagonal_construct_dyadic(
i4_x, i4_y0, i4_xD, i4_yD, pu1_refarray_luma, DYADIC_REF_W_Y);
pu1_tmp_dst[i4_x + 1] = u1_filled_samp;
i4_xD++;
}
/* (x0+7,y0) */
u1_filled_samp = isvc_diagonal_construct_dyadic(i4_x0 + 7, i4_y0, i4_xD, i4_yD,
pu1_refarray_luma, DYADIC_REF_W_Y);
}
/* For Cb and Cr */
for(i4_x = i4_xc0; i4_x < i4_xc0 + 4; i4_x++)
{
u1_filled_samp = isvc_diagonal_construct_dyadic(i4_x, i4_yc0, i4_c_xD, i4_c_yD,
pu1_refarray_cb, DYADIC_REF_W_C);
u1_filled_samp = isvc_diagonal_construct_dyadic(i4_x, i4_yc0, i4_c_xD, i4_c_yD,
pu1_refarray_cr, DYADIC_REF_W_C);
i4_c_xD++;
}
}
}
if(!(u1_ny_avlblty & TOPLEFT_MASK))
{
UWORD8 *pu1_tmp_dst1, *pu1_tmp_dst2;
UWORD8 *pu1_tmp_src1, *pu1_tmp_src2;
if(u1_ny_avlblty & LEFT_MASK)
{
/* (mb_x+left,mb_y) available, (mb_x,mb_y+top) unavailable */
i4_x0 = 9 + (i4_left << 3) + i4_left;
i4_y0 = 9 + (i4_top << 3) + i4_top;
i4_ref_yD = i4_y0 - i4_top - (i4_top >> 1);
/* Copy (x0,ref_yD), (x0+1,ref_yD) to */
/* (x0,y0), (x0+1,y0), and (x0,y0+1), (x0+1,y0+1) */
pu1_tmp_src1 = pu1_refarray_luma + (i4_ref_yD * DYADIC_REF_W_Y);
pu1_tmp_dst1 = pu1_refarray_luma + (i4_y0 * DYADIC_REF_W_Y);
pu1_tmp_dst2 = pu1_tmp_dst1 + DYADIC_REF_W_Y;
pu1_tmp_dst1[i4_x0] = pu1_tmp_src1[i4_x0];
pu1_tmp_dst2[i4_x0] = pu1_tmp_src1[i4_x0];
pu1_tmp_dst1[i4_x0 + 1] = pu1_tmp_src1[i4_x0 + 1];
pu1_tmp_dst2[i4_x0 + 1] = pu1_tmp_src1[i4_x0 + 1];
/* Cb and Cr copy */
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_c_ref_yD = i4_ref_yD >> 1;
pu1_tmp_src1 = pu1_refarray_cb + (i4_c_ref_yD * DYADIC_REF_W_C);
pu1_tmp_dst1 = pu1_refarray_cb + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_src2 = pu1_refarray_cr + (i4_c_ref_yD * DYADIC_REF_W_C);
pu1_tmp_dst2 = pu1_refarray_cr + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst1[i4_xc0] = pu1_tmp_src1[i4_xc0];
pu1_tmp_dst2[i4_xc0] = pu1_tmp_src2[i4_xc0];
}
else if(u1_ny_avlblty & TOP_MASK)
{
/* (mb_x+left,mb_y) unavailable,
(mb_x,mb_y+top) available */
i4_x0 = 9 + (i4_left << 3) + i4_left;
i4_y0 = 9 + (i4_top << 3) + i4_top;
i4_ref_xD = i4_x0 - i4_left - (i4_left >> 1);
/* Copy (ref_xD,y0) to (x0,y0) and (x0+1,y0) */
/* copy (ref_xD,y0+1) to (x0,y0+1) and (x0+1,y0+1) */
pu1_tmp_src1 = pu1_refarray_luma + (i4_y0 * DYADIC_REF_W_Y);
pu1_tmp_dst1 = pu1_tmp_src1;
pu1_tmp_src2 = pu1_tmp_src1 + DYADIC_REF_W_Y;
pu1_tmp_dst2 = pu1_tmp_src2;
pu1_tmp_dst1[i4_x0] = pu1_tmp_src1[i4_ref_xD];
pu1_tmp_dst1[i4_x0 + 1] = pu1_tmp_src1[i4_ref_xD];
pu1_tmp_dst2[i4_x0] = pu1_tmp_src2[i4_ref_xD];
pu1_tmp_dst2[i4_x0 + 1] = pu1_tmp_src2[i4_ref_xD];
/* Copy Cb and Cr */
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_c_ref_xD = i4_ref_xD >> 1;
pu1_tmp_src1 = pu1_refarray_cb + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst1 = pu1_tmp_src1;
pu1_tmp_src2 = pu1_refarray_cr + (i4_yc0 * DYADIC_REF_W_C);
pu1_tmp_dst2 = pu1_tmp_src2;
pu1_tmp_dst1[i4_xc0] = pu1_tmp_src1[i4_c_ref_xD];
pu1_tmp_dst2[i4_xc0] = pu1_tmp_src2[i4_c_ref_xD];
}
else if(u1_ny_avlblty & (TOP_MASK | LEFT_MASK))
{
/* (mb_x+left,mb_y) available,
(mb_x,mb_y+top) available */
WORD32 i4_xD, i4_yD;
WORD32 i4_c_xD, i4_c_yD;
i4_y0 = 9 + (i4_top << 3) + i4_top;
i4_x0 = 9 + (i4_left << 3) + i4_left;
i4_ref_xD = i4_x0 - i4_left - (i4_left >> 1);
i4_ref_yD = i4_y0 - i4_top - (i4_top >> 1);
i4_xD = i4_x0 - i4_ref_xD;
i4_yD = i4_y0 - i4_ref_yD;
i4_xc0 = i4_x0 >> 1;
i4_yc0 = i4_y0 >> 1;
i4_c_ref_xD = i4_ref_xD >> 1;
i4_c_ref_yD = i4_ref_yD >> 1;
i4_c_xD = i4_xc0 - i4_c_ref_xD;
i4_c_yD = i4_yc0 - i4_c_ref_yD;
/* Call diagonal construction for luma */
for(i4_y = i4_y0; i4_y < i4_y0 + 2; i4_y++)
{
for(i4_x = i4_x0; i4_x < i4_x0 + 2; i4_x++)
{
isvc_diagonal_construct_dyadic(i4_x, i4_y, i4_xD, i4_yD, pu1_refarray_luma,
DYADIC_REF_W_Y);
i4_xD++;
}
i4_yD++;
i4_xD -= 2;
}
/* Call diagonal construction for chroma */
isvc_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD, pu1_refarray_cb,
DYADIC_REF_W_C);
isvc_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD, pu1_refarray_cr,
DYADIC_REF_W_C);
}
}
}
/*****************************************************************************/
/* */
/* Function Name : isvc_get_ref_layer_mbtype */
/* */
/* Description : This function is used to find the mb type of the */
/* corresponding MB in the reference layer */
/* */
/* Inputs : pv_intra_samp_ctxt : intra samp context */
/* pi1_ref_mb_modes : ref mb modes buffer pointer */
/* i4_ref_mode_stride : mb mode buffer stride */
/* i4_x_ref : reference location X */
/* i4_y_ref : reference location Y */
/* pi4_mb_type : pointer to store the mb type */
/* i4_chroma_flag : chroma flag */
/* Globals : none */
/* Processing : it derives the bit corresponding to reference MB and */
/* stores the mbtype as INTRA if the bit is set */
/* Outputs : none */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 26 06 2009 vijayakumar creation */
/* */
/*****************************************************************************/
static WORD8 isvc_get_ref_layer_mbtype(WORD8 *pi1_ref_mb_modes, WORD32 *pi4_mb_type,
WORD8 i1_curr_slice_id, WORD8 i1_cons_intr_samp_flag)
{
WORD8 i1_intra_slice_id;
WORD8 i1_mb_mode;
i1_mb_mode = *pi1_ref_mb_modes;
i1_mb_mode = (i1_mb_mode < 0) ? i1_mb_mode : SVC_EXTRACT_MB_MODE(*pi1_ref_mb_modes);
if(i1_mb_mode <= SVC_INTER_MB)
{
*pi4_mb_type = SVC_INTER_MB;
i1_intra_slice_id = -1;
}
else
{
*pi4_mb_type = SVC_INTRA_MB;
i1_intra_slice_id = i1_mb_mode;
if(1 == i1_cons_intr_samp_flag)
{
if(i1_mb_mode != i1_curr_slice_id)
{
*pi4_mb_type = SVC_INTER_MB;
}
}
}
return i1_intra_slice_id;
}
/*****************************************************************************/
/* */
/* Function Name : isvc_fill_non_ava_pixel */
/* */
/* Description : This function does the core pixel level processing */
/* while filling the non available pixel */
/* */
/* Inputs : pv_intra_samp_ctxt : intra sampling context */
/* i4_refarray_wd : width of the reference array */
/* i4_refarray_ht : height of the reference array */
/* ps_mb_coord : current mb coord structure */
/* i4_chroma_flag : chroam processing flag */
/* Globals : none */
/* Processing : based on the map buffer values the non available pixels */
/* are filled using border extension algorithm */
/* Outputs : none */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 26 06 2009 vijayakumar creation */
/* 07 03 2011 A.D.Almeida Optimized the filling pixels */
/* */
/*****************************************************************************/
static void isvc_fill_non_avail_pixel(intra_samp_lyr_ctxt *ps_lyr_ctxt, UWORD8 *pu1_refarray_1,
UWORD8 *pu1_refarray_2, WORD32 i4_refarray_stride,
WORD32 i4_chroma_flag, UWORD8 u1_avail_map[4][4])
{
WORD32 i4_x, i4_y;
WORD32 i4_corner_pixel_available;
seg_lookup_desc_t *ps_segments_x;
seg_lookup_desc_t *ps_segments_y;
seg_description_t *ps_seg_desc_x, *ps_seg_desc_y;
seg_description_t *ps_seg_x_tmp, *ps_seg_y_tmp;
UWORD8 u1_num_sgmts_x, u1_num_sgmts_y;
WORD32 i4_x_offset;
WORD32 i4_y_offset;
WORD32 i4_refmb_wd;
WORD32 i4_refmb_ht;
WORD32 i4_xr_index, i4_yr_index;
WORD32 i4_j, i4_i;
WORD32 i4_cur_x;
UWORD32 u4_lookup_4bit, u4_lookup_5bit, u4_4thbit;
WORD32 i4_pad_size;
WORD32 i4_x_min;
WORD32 i4_y_min;
WORD32 i4_x_start_pos, i4_y_start_pos;
UWORD8 *pu1_ref_idx_x, *pu1_ref_idx_y;
PF_INTRA_SAMP_PADDING *pf_intra_samp_padding;
PF_INTRA_SAMP_PADDING **pf_intra_samp_lookup;
i4_x_offset = ps_lyr_ctxt->ps_offsets->i4_abscissa;
i4_y_offset = ps_lyr_ctxt->ps_offsets->i4_ordinate;
i4_refmb_wd = (MB_SIZE >> i4_chroma_flag) - 1;
i4_refmb_ht = (MB_SIZE >> i4_chroma_flag) - 1;
if(0 == i4_chroma_flag)
{
pf_intra_samp_lookup = gpf_lookup_fxns_luma;
}
else
{
pf_intra_samp_lookup = gpf_lookup_fxns_chroma;
}
i4_x_min = ps_lyr_ctxt->i2_x_min_pos;
i4_y_min = ps_lyr_ctxt->i2_y_min_pos;
i4_pad_size = 2 >> i4_chroma_flag;
i4_x_start_pos = (i4_x_min - i4_pad_size);
i4_y_start_pos = (i4_y_min - i4_pad_size);
i4_xr_index = (i4_x_start_pos + i4_x_offset) & i4_refmb_wd;
i4_yr_index = (i4_y_start_pos + i4_y_offset) & i4_refmb_ht;
ps_segments_x = (ps_lyr_ctxt->as_seg_lookup_horz + i4_xr_index);
ps_segments_y = (ps_lyr_ctxt->as_seg_lookup_vert + i4_yr_index);
u1_num_sgmts_x = ps_segments_x->u1_num_segments;
u1_num_sgmts_y = ps_segments_y->u1_num_segments;
ps_seg_desc_x = ps_segments_x->s_segments;
ps_seg_desc_y = ps_segments_y->s_segments;
pu1_ref_idx_x = &(ps_lyr_ctxt->au1_refarray_x_idx[0]);
pu1_ref_idx_y = &(ps_lyr_ctxt->au1_refarray_y_idx[0]);
i4_cur_x = pu1_ref_idx_x[i4_x_start_pos];
u4_4thbit = ps_segments_x->u4_start_pos;
for(i4_j = 0; i4_j < u1_num_sgmts_y; i4_j++)
{
UWORD8 i4_idx_a, i4_idx_b;
UWORD8 u1_seg_ht, u1_seg_wd;
UWORD8 u1_mb_adjoin_x, u1_mb_adjoin_y;
WORD8 i1_nearst_mb_bdry_x, i1_nearst_mb_bdry_y;
UWORD32 u4_num_valid_segs;
WORD32 i4_idx_a_plus_ny, i4_idx_b_plus_nx, i4_index;
WORD8 i1_yd_index, i1_xd_index;
ps_seg_y_tmp = &ps_seg_desc_y[i4_j];
i4_y = i4_y_start_pos + ps_seg_y_tmp->u1_seg_off;
u1_seg_ht = ps_seg_y_tmp->u1_seg_dim;
i1_yd_index = ps_seg_y_tmp->i1_dist_idx;
i1_nearst_mb_bdry_y = ps_seg_y_tmp->i1_nearst_mb_bdry;
u1_mb_adjoin_y = ps_seg_y_tmp->u1_mb_adjoin;
i4_idx_a = pu1_ref_idx_y[i4_y];
i4_idx_a_plus_ny = (i4_idx_a + i1_nearst_mb_bdry_y);
/* Pack the availabilities of the next three horizontal MBs in 3bit
format and 4th bit indicating if the start position is greater
than the mb_width/2
*/
u4_lookup_4bit = u4_4thbit | u1_avail_map[i4_idx_a][i4_cur_x + 2] << 2 |
u1_avail_map[i4_idx_a][i4_cur_x + 1] << 1 |
u1_avail_map[i4_idx_a][i4_cur_x];
u4_num_valid_segs = gu4_valid_segs_lookup[u4_lookup_4bit];
i4_i = CLZ(~u4_num_valid_segs);
u4_num_valid_segs <<= (i4_i + 1);
for(; i4_i < u1_num_sgmts_x; i4_i++)
{
ps_seg_x_tmp = &ps_seg_desc_x[i4_i];
i4_x = i4_x_start_pos + ps_seg_x_tmp->u1_seg_off;
i4_idx_b = pu1_ref_idx_x[i4_x];
u1_seg_wd = ps_seg_x_tmp->u1_seg_dim;
i1_xd_index = ps_seg_x_tmp->i1_dist_idx;
i1_nearst_mb_bdry_x = ps_seg_x_tmp->i1_nearst_mb_bdry;
u1_mb_adjoin_x = ps_seg_x_tmp->u1_mb_adjoin;
i4_idx_b_plus_nx = (i4_idx_b + i1_nearst_mb_bdry_x);
/* Find the avalability of (x,y-Yd),(x-Xd,y),(x-Xd,y-Yd) and pack
it to 3 bits.
*/
u4_lookup_5bit = u1_avail_map[i4_idx_a_plus_ny][i4_idx_b_plus_nx] << 2 |
u1_avail_map[i4_idx_a_plus_ny][i4_idx_b] << 1 |
u1_avail_map[i4_idx_a][i4_idx_b_plus_nx] | u1_mb_adjoin_x |
u1_mb_adjoin_y;
i4_corner_pixel_available = u1_avail_map[i4_idx_a_plus_ny][i4_idx_b_plus_nx];
/* Use a function pointer table based on lookup to compute
Left,Top,Bottom,Right,Diagonal padding.
*/
pf_intra_samp_padding = pf_intra_samp_lookup[u4_lookup_5bit];
if(pf_intra_samp_padding != NULL)
{
pf_intra_samp_padding(i4_x, i4_y, i1_xd_index, i1_yd_index, u1_seg_wd, u1_seg_ht,
pu1_refarray_1, pu1_refarray_2, i4_refarray_stride,
u1_mb_adjoin_x, u1_mb_adjoin_y, i4_corner_pixel_available);
}
/* increment to the next unavailable segment */
i4_index = CLZ(~u4_num_valid_segs);
u4_num_valid_segs <<= (i4_index + 1);
i4_i += i4_index;
}
}
}
/*****************************************************************************/
/* */
/* Function Name : isvc_intra_resamp_generate_segment_lookup */
/* */
/* Description : This function generates segment lookup used to derive */
/* segments which have to be be intra resampled */
/* */
/* Inputs : pv_lookup_table : look up table */
/* i4_dimension : dimension of the block which is used in*/
/* resampling process. */
/* i4_mb_size : size of the mb */
/* Globals : None */
/* Processing : This function generates segment lookup used to derive */
/* segments which have to be be intra resampled */
/* Outputs : none */
/* Returns : none */
/* */
/* Issues : None */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 03 03 2011 A.D.Almeida Creation */
/* */
void isvc_intra_resamp_generate_segment_lookup(seg_lookup_desc_t *ps_seg_lookup_table,
WORD32 i4_dimension, WORD32 i4_mb_size,
WORD32 i4_shift_val)
{
WORD32 i4_x;
WORD32 i4_position, i4_dist_prev_mb, i4_dist_next_mb;
UWORD8 u1_seg_dim;
UWORD8 u1_num_sgmts;
WORD32 i4_block_size = i4_mb_size >> 1;
UWORD8 u1_offset = 0;
seg_lookup_desc_t *ps_segments;
seg_description_t *ps_seg_desc;
memset(ps_seg_lookup_table, 0, i4_mb_size * sizeof(seg_lookup_desc_t));
for(i4_x = 0; i4_x < i4_mb_size; i4_x++)
{
ps_segments = &ps_seg_lookup_table[i4_x];
ps_seg_desc = ps_segments->s_segments;
i4_position = i4_x;
if(i4_x >= i4_block_size)
{
/* set the fourth bit so that later it can be directly OR ed */
ps_segments->u4_start_pos = 8;
}
else
{
ps_segments->u4_start_pos = 0;
}
u1_num_sgmts = 0;
u1_offset = 0;
while(i4_position < (i4_x + i4_dimension))
{
/* check and fill the nearest mb boundry flag */
if((i4_position & (i4_mb_size - 1)) < i4_block_size)
{
ps_seg_desc->i1_nearst_mb_bdry = -1;
}
else
{
ps_seg_desc->i1_nearst_mb_bdry = 1;
}
/* find the distance from the previous MB for start of segment*/
i4_dist_prev_mb = (i4_position & (i4_mb_size - 1));
ps_seg_desc->i1_dist_idx =
((i4_dist_prev_mb >= i4_mb_size >> 1) ? (i4_mb_size - i4_dist_prev_mb)
: -(i4_dist_prev_mb + 1));
/* find the size of the segment */
u1_seg_dim = (i4_block_size - (i4_position & (i4_block_size - 1)));
i4_position += u1_seg_dim;
if(i4_position > (i4_x + i4_dimension))
{
i4_position = (i4_x + i4_dimension);
u1_seg_dim = (i4_position & (i4_block_size - 1));
}
/* find the distance from the next MB for end of segment */
i4_dist_next_mb = (i4_position & (i4_mb_size - 1));
ps_seg_desc->u1_seg_dim = u1_seg_dim;
ps_seg_desc->u1_seg_off = u1_offset;
/* check if the segment has a adjoining MB edge */
if(i4_dist_prev_mb == 0)
{
if(0 == u1_num_sgmts)
{
ps_seg_desc->u1_mb_adjoin = 0;
}
else
{
ps_seg_desc->u1_mb_adjoin = 1 << i4_shift_val;
}
}
else if(i4_dist_next_mb == 0)
{
if(i4_position == (i4_x + i4_dimension))
{
ps_seg_desc->u1_mb_adjoin = 0;
}
else
{
ps_seg_desc->u1_mb_adjoin = 1 << i4_shift_val;
}
}
else
{
ps_seg_desc->u1_mb_adjoin = 0;
}
u1_offset += u1_seg_dim;
u1_num_sgmts++;
ps_seg_desc++;
}
/* fill the number of segments for this position */
ps_segments->u1_num_segments = u1_num_sgmts;
}
}
static void isvc_reflayer_construction(void *pv_intra_samp_ctxt, UWORD8 *pu1_inp_1,
WORD32 i4_inp_stride, WORD32 i4_refarray_stride,
mem_element_t *ps_ref_mb_mode_map, WORD32 i4_chroma_flag)
{
WORD32 i4_x, i4_y;
intra_sampling_ctxt_t *ps_ctxt;
intra_samp_lyr_ctxt *ps_lyr_ctxt;
WORD8 *pi1_ref_mb_modes, *pi1_ref_mb_modes_bkp_1;
WORD32 i4_ref_mode_stride;
WORD32 i4_element_size;
WORD32 i4_dummy;
WORD32 i4_mb_ht, i4_mb_wd;
/* 4x4 mb grid buffer to store the mb availablity */
UWORD8 u1_map_buf[BLK_SIZE][BLK_SIZE];
WORD32 i4_ref_wd;
WORD32 i4_ref_ht;
WORD32 i4_x_offset;
WORD32 i4_y_offset;
WORD32 i4_refarray_wd;
WORD32 i4_refarray_ht;
WORD32 i4_mb_type;
WORD8 i1_cons_intr_samp_flag;
WORD8 i1_slice_id = 0;
WORD32 i4_mb_wd_sft, i4_mb_ht_sft;
WORD32 i4_unfill_check;
UWORD8 *pu1_refarray_1, *pu1_refarray_2;
UNUSED(i4_dummy);
memset(&u1_map_buf[0][0], 0, 16);
ps_ctxt = (intra_sampling_ctxt_t *) pv_intra_samp_ctxt;
ps_lyr_ctxt = &ps_ctxt->as_res_lyrs[ps_ctxt->i4_res_lyr_id];
pi1_ref_mb_modes = (WORD8 *) ps_ref_mb_mode_map->pv_buffer;
i4_ref_mode_stride = ps_ref_mb_mode_map->i4_num_element_stride;
i4_element_size = ps_ref_mb_mode_map->i4_element_size;
/* get the condtrained intra sampling flag */
i1_cons_intr_samp_flag = ps_lyr_ctxt->i1_constrained_intra_rsmpl_flag;
ASSERT(NULL != pi1_ref_mb_modes);
{
WORD32 i4_base_width = ps_lyr_ctxt->i4_ref_width;
WORD32 i4_base_height = ps_lyr_ctxt->i4_ref_height;
i4_ref_wd = i4_base_width >> i4_chroma_flag;
i4_ref_ht = i4_base_height >> i4_chroma_flag;
i4_mb_wd_sft = (MB_WIDTH_SHIFT - i4_chroma_flag);
i4_mb_ht_sft = (MB_HEIGHT_SHIFT - i4_chroma_flag);
}
i4_x_offset = ps_lyr_ctxt->ps_offsets->i4_abscissa;
i4_y_offset = ps_lyr_ctxt->ps_offsets->i4_ordinate;
i4_refarray_wd = ps_lyr_ctxt->ps_ref_array_dims->i4_abscissa;
i4_refarray_ht = ps_lyr_ctxt->ps_ref_array_dims->i4_ordinate;
i4_mb_wd = (MB_SIZE >> i4_chroma_flag);
i4_mb_ht = (MB_SIZE >> i4_chroma_flag);
if(1 == i1_cons_intr_samp_flag)
{
WORD32 i4_x_min, i4_x_max;
WORD32 i4_y_min, i4_y_max;
i4_x_min = ps_lyr_ctxt->i2_x_min_pos;
i4_x_max = ps_lyr_ctxt->i2_x_max_pos;
i4_y_min = ps_lyr_ctxt->i2_y_min_pos;
i4_y_max = ps_lyr_ctxt->i2_y_max_pos;
i4_mb_type = SVC_INTER_MB;
{
WORD32 i4_x_ref;
WORD32 i4_y_ref;
WORD32 i4_mb_x, i4_mb_y;
/* derive local varaibles */
i4_y_ref = (i4_y_min + 1) + i4_y_offset;
i4_x_ref = (i4_x_min + 1) + i4_x_offset;
i4_mb_x = (i4_x_ref >> i4_mb_wd_sft);
i4_mb_y = (i4_y_ref >> i4_mb_ht_sft);
pi1_ref_mb_modes = (WORD8 *) ps_ref_mb_mode_map->pv_buffer;
/* get the location of the byte which has the current mb mode */
pi1_ref_mb_modes += (i4_mb_y * i4_ref_mode_stride * i4_element_size);
pi1_ref_mb_modes += (i4_mb_x * i4_element_size);
}
for(i4_y = (i4_y_min + 1); i4_y <= (i4_y_max - 1);)
{
WORD32 i4_x_ref;
WORD32 i4_y_ref;
WORD32 i4_distleftX, i4_rangeX;
WORD32 i4_disttopY, i4_rangeY;
i4_y_ref = (i4_y + i4_y_offset);
i4_disttopY = (i4_y_ref) & (i4_mb_ht - 1);
i4_rangeY = (i4_mb_ht - i4_disttopY);
pi1_ref_mb_modes_bkp_1 = pi1_ref_mb_modes;
for(i4_x = (i4_x_min + 1); i4_x <= (i4_x_max - 1);)
{
i4_x_ref = (i4_x + i4_x_offset);
i4_distleftX = (i4_x_ref) & (i4_mb_wd - 1);
i4_rangeX = (i4_mb_wd - i4_distleftX);
/* get the referecne layer mb type */
i1_slice_id =
isvc_get_ref_layer_mbtype(pi1_ref_mb_modes_bkp_1, &i4_mb_type, i1_slice_id, 0);
if(SVC_INTRA_MB == i4_mb_type)
{
break;
}
i4_x += i4_rangeX;
pi1_ref_mb_modes_bkp_1 += i4_element_size;
}
if(SVC_INTRA_MB == i4_mb_type)
{
break;
}
i4_y += i4_rangeY;
pi1_ref_mb_modes += (i4_ref_mode_stride * i4_element_size);
}
}
else
{
i1_slice_id = -1;
}
i4_unfill_check = 0;
/* --------------------------------------------------------------------- */
/* Copying the data from recon buffer to refSample Array.
*/
/* NOTE: The copying of the data from recon buffer to refSample Array */
/* can be optimized by bring in data at N-MB level,thus taking */
/* advantage of the overlapping data which now gets copied every
* MB*/
/* --------------------------------------------------------------------- */
{
WORD32 i4_x_ref_start, i4_x_ref_end;
WORD32 i4_y_ref_start, i4_y_ref_end;
WORD32 i4_rangeW, i4_rangeH;
WORD32 i4_offset;
UWORD8 *pu1_src, *pu1_dst;
UWORD8 *pu1_dst1, *pu1_dst2;
/* Copy (refW x refH) dimension into reference sample array */
i4_x_ref_start = MAX(0, MIN((i4_ref_wd - 1), i4_x_offset));
i4_x_ref_end = MAX(0, MIN((i4_ref_wd - 1), (i4_refarray_wd - 1) + i4_x_offset));
i4_y_ref_start = MAX(0, MIN((i4_ref_ht - 1), i4_y_offset));
i4_y_ref_end = MAX(0, MIN((i4_ref_ht - 1), (i4_refarray_ht - 1) + i4_y_offset));
/* find the actual data to be copied */
i4_rangeW = (i4_x_ref_end - i4_x_ref_start + 1);
i4_rangeH = (i4_y_ref_end - i4_y_ref_start + 1);
/* get the reconbuffer pointer and ref sample array pointer */
i4_offset =
(i4_x_ref_start - i4_x_offset) + ((i4_y_ref_start - i4_y_offset) * i4_refarray_stride);
if(0 == i4_chroma_flag)
{
pu1_refarray_1 = ps_ctxt->pu1_refarray_buffer;
pu1_refarray_2 = NULL;
pu1_src = pu1_inp_1;
pu1_dst = pu1_refarray_1 + i4_offset;
/* Copy luma data into refsample array */
isvc_copy_data(pu1_src, i4_inp_stride, pu1_dst, i4_refarray_stride, i4_rangeW,
i4_rangeH);
}
else
{
pu1_refarray_1 = ps_ctxt->pu1_refarray_buffer;
pu1_refarray_2 = ps_ctxt->pu1_refarray_cb;
pu1_src = pu1_inp_1;
pu1_dst1 = pu1_refarray_1 + i4_offset;
pu1_dst2 = pu1_refarray_2 + i4_offset;
isvc_copy_data_semiplanr(pu1_src, i4_inp_stride, pu1_dst1, pu1_dst2, i4_refarray_stride,
i4_rangeW, i4_rangeH);
}
}
{
WORD32 i4_i, i4_j;
UWORD8 *pu1_ref_idx_x, *pu1_ref_idx_y;
WORD32 i4_x_ref;
WORD32 i4_y_ref;
WORD32 i4_mb_x, i4_mb_y;
i4_y_ref = i4_y_offset;
i4_x_ref = i4_x_offset;
i4_mb_x = (i4_x_ref >> i4_mb_wd_sft);
i4_mb_y = (i4_y_ref >> i4_mb_ht_sft);
pi1_ref_mb_modes = (WORD8 *) ps_ref_mb_mode_map->pv_buffer;
pi1_ref_mb_modes += (i4_mb_y * i4_ref_mode_stride * i4_element_size);
pi1_ref_mb_modes += (i4_mb_x * i4_element_size);
pu1_ref_idx_x = &(ps_lyr_ctxt->au1_refarray_x_idx[0]);
pu1_ref_idx_y = &(ps_lyr_ctxt->au1_refarray_y_idx[0]);
i4_j = 0;
for(i4_y = 0; i4_y < i4_refarray_ht;)
{
WORD32 i4_x_ref;
WORD32 i4_y_ref;
WORD32 i4_distleftX, i4_rangeX;
WORD32 i4_disttopY, i4_rangeY;
i4_y_ref = i4_y + i4_y_offset;
i4_disttopY = (i4_y_ref) & (i4_mb_ht - 1);
i4_rangeY = (i4_mb_ht - i4_disttopY);
memset(pu1_ref_idx_y, i4_j, i4_rangeY);
pu1_ref_idx_y += i4_rangeY;
i4_i = 0;
pi1_ref_mb_modes_bkp_1 = pi1_ref_mb_modes;
for(i4_x = 0; i4_x < i4_refarray_wd;)
{
i4_x_ref = i4_x + i4_x_offset;
i4_distleftX = (i4_x_ref) & (i4_mb_wd - 1);
i4_rangeX = (i4_mb_wd - i4_distleftX);
if(0 == i4_j)
{
memset(pu1_ref_idx_x, i4_i, i4_rangeX);
pu1_ref_idx_x += i4_rangeX;
}
isvc_get_ref_layer_mbtype(pi1_ref_mb_modes_bkp_1, &i4_mb_type, i1_slice_id,
i1_cons_intr_samp_flag);
if(SVC_INTRA_MB == i4_mb_type)
{
u1_map_buf[i4_j][i4_i] = 1;
i4_dummy = 1;
}
else
{
i4_unfill_check = 1;
}
i4_x = i4_x + i4_rangeX;
i4_i++;
pi1_ref_mb_modes_bkp_1 += i4_element_size;
}
i4_j++;
i4_y = i4_y + i4_rangeY;
pi1_ref_mb_modes += (i4_ref_mode_stride * i4_element_size);
}
ASSERT(1 == i4_dummy);
}
if(i4_unfill_check == 1)
{
isvc_fill_non_avail_pixel(ps_lyr_ctxt, pu1_refarray_1, pu1_refarray_2, i4_refarray_stride,
i4_chroma_flag, u1_map_buf);
}
}
/*****************************************************************************/
/* */
/* Function Name : isvc_interpolate_base_luma_dyadic */
/* */
/* Description : This function takes the reference array buffer & performs*/
/* intra resampling for dyadic scaling ratios */
/* Inputs : pu1_inp_buf : ptr to the 12x12 reference sample buffer */
/* pi2_tmp_filt_buf : ptr to the 12x16 buffer to hold the */
/* vertically interpolated data */
/* pu1_out_buf : output buffer pointer */
/* i4_out_stride : output buffer stride */
/* Globals : none */
/* Processing : it does the interpolation in vertical direction followed */
/* by horizontal direction */
/* Outputs : resampled pixels */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 03 12 2010 Nithya creation */
/* */
/*****************************************************************************/
void isvc_interpolate_base_luma_dyadic(UWORD8 *pu1_inp_buf, WORD16 *pi2_tmp_filt_buf,
UWORD8 *pu1_out_buf, WORD32 i4_out_stride)
{
WORD32 i4_x, i4_y;
WORD32 i4_coeff_0, i4_coeff_1, i4_coeff_2, i4_coeff_3;
WORD32 i4_samp_0, i4_samp_1, i4_samp_2, i4_samp_3;
WORD32 i4_rslt_1, i4_rslt_2;
WORD32 i4_filt_stride, i4_src_stride;
UWORD8 *pu1_inp, *pu1_out;
WORD16 *pi2_tmp;
/* Filter coefficient values for phase 4 */
i4_coeff_0 = -3;
i4_coeff_1 = 28;
i4_coeff_2 = 8;
i4_coeff_3 = -1;
i4_filt_stride = 12;
i4_src_stride = DYADIC_REF_W_Y;
pu1_inp = pu1_inp_buf;
pi2_tmp = pi2_tmp_filt_buf;
pu1_out = pu1_out_buf;
/* Vertical interpolation */
for(i4_x = 0; i4_x < 12; i4_x++)
{
/* y = 0, y_phase = 12 */
i4_samp_0 = pu1_inp[i4_x];
pu1_inp += i4_src_stride;
i4_samp_1 = pu1_inp[i4_x];
pu1_inp += i4_src_stride;
i4_samp_2 = pu1_inp[i4_x];
pu1_inp += i4_src_stride;
i4_samp_3 = pu1_inp[i4_x];
pu1_inp += i4_src_stride;
/* since y_phase 12 for y = 0 */
i4_rslt_1 = i4_samp_0 * i4_coeff_3;
i4_rslt_1 += i4_samp_1 * i4_coeff_2;
i4_rslt_1 += i4_samp_2 * i4_coeff_1;
i4_rslt_1 += i4_samp_3 * i4_coeff_0;
pi2_tmp[i4_x] = i4_rslt_1;
pi2_tmp += i4_filt_stride;
for(i4_y = 1; i4_y < 15; i4_y += 2)
{
i4_samp_0 = i4_samp_1;
i4_samp_1 = i4_samp_2;
i4_samp_2 = i4_samp_3;
i4_samp_3 = pu1_inp[i4_x];
/* y_phase is 4 for odd values of y */
/* and 12 for even values of y */
i4_rslt_1 = i4_samp_0 * i4_coeff_0;
i4_rslt_1 += i4_samp_1 * i4_coeff_1;
i4_rslt_1 += i4_samp_2 * i4_coeff_2;
i4_rslt_1 += i4_samp_3 * i4_coeff_3;
i4_rslt_2 = i4_samp_0 * i4_coeff_3;
i4_rslt_2 += i4_samp_1 * i4_coeff_2;
i4_rslt_2 += i4_samp_2 * i4_coeff_1;
i4_rslt_2 += i4_samp_3 * i4_coeff_0;
/* Storing the results */
pi2_tmp[i4_x] = i4_rslt_1;
pi2_tmp += i4_filt_stride;
pi2_tmp[i4_x] = i4_rslt_2;
/* Incrementing the pointers */
pi2_tmp += i4_filt_stride;
pu1_inp += i4_src_stride;
}
/* y = 15, y_phase = 4 */
i4_samp_0 = i4_samp_1;
i4_samp_1 = i4_samp_2;
i4_samp_2 = i4_samp_3;
i4_samp_3 = pu1_inp[i4_x];
i4_rslt_1 = i4_samp_0 * i4_coeff_0;
i4_rslt_1 += i4_samp_1 * i4_coeff_1;
i4_rslt_1 += i4_samp_2 * i4_coeff_2;
i4_rslt_1 += i4_samp_3 * i4_coeff_3;
pi2_tmp[i4_x] = i4_rslt_1;
pu1_inp = pu1_inp_buf;
pi2_tmp = pi2_tmp_filt_buf;
}
/* Horizontal interpolation */
for(i4_y = 0; i4_y < 16; i4_y++)
{
/* x = 0, x_phase = 12 */
i4_samp_0 = *pi2_tmp++;
i4_samp_1 = *pi2_tmp++;
i4_samp_2 = *pi2_tmp++;
i4_samp_3 = *pi2_tmp++;
/* since x_phase 12 for x = 0 */
i4_rslt_1 = i4_samp_0 * i4_coeff_3;
i4_rslt_1 += i4_samp_1 * i4_coeff_2;
i4_rslt_1 += i4_samp_2 * i4_coeff_1;
i4_rslt_1 += i4_samp_3 * i4_coeff_0;
i4_rslt_1 += 512;
i4_rslt_1 >>= 10;
pu1_out[0] = CLIPUCHAR(i4_rslt_1);
for(i4_x = 1; i4_x < 15; i4_x += 2)
{
i4_samp_0 = i4_samp_1;
i4_samp_1 = i4_samp_2;
i4_samp_2 = i4_samp_3;
i4_samp_3 = *pi2_tmp++;
/* x_phase is 4 for odd values of x */
/* and 12 for even values of x */
i4_rslt_1 = i4_samp_0 * i4_coeff_0;
i4_rslt_1 += i4_samp_1 * i4_coeff_1;
i4_rslt_1 += i4_samp_2 * i4_coeff_2;
i4_rslt_1 += i4_samp_3 * i4_coeff_3;
i4_rslt_1 += 512;
i4_rslt_2 = i4_samp_0 * i4_coeff_3;
i4_rslt_2 += i4_samp_1 * i4_coeff_2;
i4_rslt_2 += i4_samp_2 * i4_coeff_1;
i4_rslt_2 += i4_samp_3 * i4_coeff_0;
i4_rslt_2 += 512;
i4_rslt_1 >>= 10;
i4_rslt_2 >>= 10;
pu1_out[i4_x] = CLIPUCHAR(i4_rslt_1);
pu1_out[i4_x + 1] = CLIPUCHAR(i4_rslt_2);
}
/* x = 15 */
i4_samp_0 = i4_samp_1;
i4_samp_1 = i4_samp_2;
i4_samp_2 = i4_samp_3;
i4_samp_3 = *pi2_tmp++;
i4_rslt_1 = i4_samp_0 * i4_coeff_0;
i4_rslt_1 += i4_samp_1 * i4_coeff_1;
i4_rslt_1 += i4_samp_2 * i4_coeff_2;
i4_rslt_1 += i4_samp_3 * i4_coeff_3;
i4_rslt_1 += 512;
i4_rslt_1 >>= 10;
pu1_out[i4_x] = CLIPUCHAR(i4_rslt_1);
pu1_out += i4_out_stride;
}
}
/*****************************************************************************/
/* */
/* Function Name : isvc_vert_interpol_chroma_dyadic */
/* */
/* Description : This function takes the reference array buffer & performs*/
/* vertical intra resampling for dyadic scaling ratios for */
/* chroma for the following ref_lyr_chroma_phase_y_plus1 and*/
/* chroma_phase_y_plus1: */
/* ref_lyr cur_lyr */
/* 0 0 */
/* 1 0 */
/* 1 1 */
/* 1 2 */
/* 2 1 */
/* 2 2 */
/* Inputs : pu1_inp_buf : ptr to the 6x6 reference sample buffer */
/* pi2_tmp_filt_buf : ptr to the 6x8 buffer to hold the */
/* vertically interpolated data */
/* i4_phase_0 : y phase for even values of y */
/* i4_phase_1 : y phase for odd values of y */
/* Globals : none */
/* Processing : it does the interpolation in vertical direction */
/* Outputs : vertically resampled samples */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 06 12 2010 Nithya creation */
/* */
/*****************************************************************************/
void isvc_vert_interpol_chroma_dyadic(UWORD8 *pu1_inp_buf, WORD16 *pi2_tmp_filt_buf,
WORD32 i4_phase_0, WORD32 i4_phase_1)
{
WORD32 i4_x, i4_y;
WORD32 i4_coeff_0, i4_coeff_1, i4_coeff_2, i4_coeff_3;
WORD32 i4_samp_0, i4_samp_1;
WORD32 i4_rslt_1, i4_rslt_2;
WORD32 i4_filt_stride, i4_src_stride;
UWORD8 *pu1_inp;
WORD16 *pi2_tmp;
i4_coeff_0 = 16 - i4_phase_0;
i4_coeff_1 = i4_phase_0;
i4_coeff_2 = 16 - i4_phase_1;
i4_coeff_3 = i4_phase_1;
pu1_inp = pu1_inp_buf;
pi2_tmp = pi2_tmp_filt_buf;
i4_filt_stride = 6;
i4_src_stride = DYADIC_REF_W_C;
/* Vertical interpolation */
for(i4_x = 0; i4_x < 6; i4_x++)
{
/* y = 0, y_phase = phase_0 */
i4_samp_0 = pu1_inp[i4_x];
pu1_inp += i4_src_stride;
i4_samp_1 = pu1_inp[i4_x];
pu1_inp += i4_src_stride;
/* since y_phase = phase_0 for y = 0 */
i4_rslt_1 = i4_samp_0 * i4_coeff_0;
i4_rslt_1 += i4_samp_1 * i4_coeff_1;
pi2_tmp[i4_x] = i4_rslt_1;
pi2_tmp += i4_filt_stride;
for(i4_y = 1; i4_y < 7; i4_y += 2)
{
i4_samp_0 = i4_samp_1;
i4_samp_1 = pu1_inp[i4_x];
/* y_phase is phase_1 for odd values of y */
/* and phase_0 for even values of y */
i4_rslt_1 = i4_samp_0 * i4_coeff_2;
i4_rslt_1 += i4_samp_1 * i4_coeff_3;
i4_rslt_2 = i4_samp_0 * i4_coeff_0;
i4_rslt_2 += i4_samp_1 * i4_coeff_1;
pi2_tmp[i4_x] = i4_rslt_1;
pi2_tmp += i4_filt_stride;
pi2_tmp[i4_x] = i4_rslt_2;
pi2_tmp += i4_filt_stride;
pu1_inp += i4_src_stride;
}
/* y = 7, y_phase = phase_1 */
i4_samp_0 = i4_samp_1;
i4_samp_1 = pu1_inp[i4_x];
i4_rslt_1 = i4_samp_0 * i4_coeff_2;
i4_rslt_1 += i4_samp_1 * i4_coeff_3;
pi2_tmp[i4_x] = i4_rslt_1;
pu1_inp = pu1_inp_buf;
pi2_tmp = pi2_tmp_filt_buf;
}
}
/*****************************************************************************/
/* */
/* Function Name : isvc_horz_interpol_chroma_dyadic */
/* */
/* Description : This function takes the reference array buffer & performs*/
/* horizontal intra resampling for dyadic scaling ratios for*/
/* chroma with following ref_lyr_chroma_phase_x_plus1_flag */
/* and chroma_phase_x_plus1_flag: */
/* ref_lyr cur_lyr */
/* 0 0 */
/* 1 0 */
/* 1 1 */
/* Inputs : pi2_tmp_filt_buf : ptr to the 6x8 buffer containing the */
/* vertically interpolated data */
/* pu1_out_buf : pointer to the output buffer */
/* i4_out_stride : output buffer stride */
/* i4_phase_0 : x phase for even values of x */
/* i4_phase_1 : x phase for odd values of x */
/* Globals : none */
/* Processing : it does the interpolation in vertical direction */
/* Outputs : resampled samples */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 06 12 2010 Nithya creation */
/* */
/*****************************************************************************/
void isvc_horz_interpol_chroma_dyadic(WORD16 *pi2_tmp_filt_buf, UWORD8 *pu1_out_buf,
WORD32 i4_out_stride, WORD32 i4_phase_0, WORD32 i4_phase_1)
{
WORD32 i4_x, i4_y;
WORD32 i4_coeff_0, i4_coeff_1, i4_coeff_2, i4_coeff_3;
WORD32 i4_samp_0, i4_samp_1;
WORD32 i4_rslt_1, i4_rslt_2;
WORD32 i4_dst_stride;
UWORD8 *pu1_out;
WORD16 *pi2_tmp;
i4_coeff_0 = 16 - i4_phase_0;
i4_coeff_1 = i4_phase_0;
i4_coeff_2 = 16 - i4_phase_1;
i4_coeff_3 = i4_phase_1;
pu1_out = pu1_out_buf;
pi2_tmp = pi2_tmp_filt_buf;
i4_dst_stride = i4_out_stride;
/* Horizontal interpolation */
for(i4_y = 0; i4_y < 8; i4_y++)
{
/* x = 0, x_phase = phase_0 */
i4_samp_0 = *pi2_tmp++;
i4_samp_1 = *pi2_tmp++;
/* since x_phase = phase_0 for x = 0 */
i4_rslt_1 = i4_samp_0 * i4_coeff_0;
i4_rslt_1 += i4_samp_1 * i4_coeff_1;
/* Round to 8-bit value */
i4_rslt_1 += 128;
i4_rslt_1 >>= 8;
pu1_out[0] = i4_rslt_1;
for(i4_x = 1; i4_x < 7; i4_x += 2)
{
i4_samp_0 = i4_samp_1;
i4_samp_1 = *pi2_tmp++;
/* x_phase is phase_1 for odd values of x */
/* and phase_0 for even values of x */
i4_rslt_1 = i4_samp_0 * i4_coeff_2;
i4_rslt_1 += i4_samp_1 * i4_coeff_3;
i4_rslt_2 = i4_samp_0 * i4_coeff_0;
i4_rslt_2 += i4_samp_1 * i4_coeff_1;
/* Rounding to 8-bit values */
i4_rslt_1 += 128;
i4_rslt_1 >>= 8;
i4_rslt_2 += 128;
i4_rslt_2 >>= 8;
pu1_out[2 * i4_x] = i4_rslt_1;
pu1_out[2 * (i4_x + 1)] = i4_rslt_2;
}
/* y = 7, y_phase = phase_1 */
i4_samp_0 = i4_samp_1;
i4_samp_1 = *pi2_tmp++;
/* since x_phase = phase_1 for x = 7 */
i4_rslt_1 = i4_samp_0 * i4_coeff_2;
i4_rslt_1 += i4_samp_1 * i4_coeff_3;
/* Round to 8-bit value */
i4_rslt_1 += 128;
i4_rslt_1 >>= 8;
pu1_out[2 * 7] = i4_rslt_1;
pu1_out += i4_dst_stride;
}
}
static void isvc_interpolate_intra_base(void *pv_intra_samp_ctxt, UWORD8 *pu1_out,
WORD32 i4_out_stride, WORD32 i4_refarray_wd,
WORD32 i4_chroma_flag, WORD32 i4_refarray_flag)
{
intra_sampling_ctxt_t *ps_ctxt;
intra_samp_lyr_ctxt *ps_lyr_ctxt;
WORD32 i4_x, i4_y;
UWORD8 *pu1_refarray;
coordinates_t *ps_phase;
WORD32 i4_temp_array_ht;
WORD32 *pi4_interp_buff;
WORD32 *pi4_interp_buff_temp;
WORD32 i4_mb_wd;
WORD32 i4_mb_ht;
WORD32 i4_x_min, i4_x_max;
ps_ctxt = (intra_sampling_ctxt_t *) pv_intra_samp_ctxt;
ps_lyr_ctxt = &ps_ctxt->as_res_lyrs[ps_ctxt->i4_res_lyr_id];
if(0 == i4_refarray_flag)
{
pu1_refarray = ps_ctxt->pu1_refarray_buffer;
}
else
{
pu1_refarray = ps_ctxt->pu1_refarray_cb;
}
i4_mb_wd = MB_SIZE >> i4_chroma_flag;
i4_mb_ht = MB_SIZE >> i4_chroma_flag;
i4_x_min = ps_lyr_ctxt->i2_x_min_pos;
i4_x_max = ps_lyr_ctxt->i2_x_max_pos;
ps_phase = ps_lyr_ctxt->ps_phase;
i4_temp_array_ht = i4_mb_ht;
pi4_interp_buff = ps_ctxt->pi4_temp_interpolation_buffer;
pi4_interp_buff_temp = pi4_interp_buff;
for(i4_y = 0; i4_y < i4_temp_array_ht; i4_y++)
{
for(i4_x = (i4_x_min - 1); i4_x <= (i4_x_max + 2); i4_x++)
{
WORD32 i4_y_ref = ps_lyr_ctxt->pi4_ref_array_positions_y[i4_y];
WORD32 i4_y_phase =
ps_phase[(ps_lyr_ctxt->ps_mb_pos->i4_ordinate * i4_mb_ht + i4_y) % 3].i4_ordinate;
UWORD8 *pu1_refarray_temp = pu1_refarray + i4_x + (i4_y_ref * i4_refarray_wd);
if(0 == i4_chroma_flag)
{
*(pi4_interp_buff + i4_x) =
(g_ai1_interp_filter_luma[i4_y_phase]) *
(*(pu1_refarray_temp - i4_refarray_wd)) +
(g_ai1_interp_filter_luma[16 + i4_y_phase]) * (*(pu1_refarray_temp)) +
(g_ai1_interp_filter_luma[32 + i4_y_phase]) *
(*(pu1_refarray_temp + i4_refarray_wd)) +
(g_ai1_interp_filter_luma[48 + i4_y_phase]) *
(*(pu1_refarray_temp + (2 * i4_refarray_wd)));
}
else
{
*(pi4_interp_buff + i4_x) =
(g_au1_interp_filter_chroma[i4_y_phase]) * (*(pu1_refarray_temp)) +
(g_au1_interp_filter_chroma[16 + i4_y_phase]) *
(*(pu1_refarray_temp + i4_refarray_wd));
}
}
pi4_interp_buff = pi4_interp_buff + i4_refarray_wd;
}
pi4_interp_buff = pi4_interp_buff_temp;
for(i4_y = 0; i4_y < i4_temp_array_ht; i4_y++)
{
for(i4_x = 0; i4_x < i4_mb_wd; i4_x++)
{
WORD32 i4_x_ref = ps_lyr_ctxt->pi4_ref_array_positions_y[i4_x];
WORD32 i4_x_phase =
ps_phase[(ps_lyr_ctxt->ps_mb_pos->i4_abscissa * MAX_REF_ARR_WD_HT + i4_x) % 3]
.i4_ordinate;
pi4_interp_buff_temp = pi4_interp_buff + i4_x_ref;
if(0 == i4_chroma_flag)
{
*(pu1_out + i4_x + (i4_y * i4_out_stride)) = CLIPUCHAR(
((g_ai1_interp_filter_luma[i4_x_phase]) * (*(pi4_interp_buff_temp - 1)) +
(g_ai1_interp_filter_luma[16 + i4_x_phase]) * (*(pi4_interp_buff_temp)) +
(g_ai1_interp_filter_luma[32 + i4_x_phase]) * (*(pi4_interp_buff_temp + 1)) +
(g_ai1_interp_filter_luma[48 + i4_x_phase]) * (*(pi4_interp_buff_temp + 2)) +
512) >>
10);
}
else
{
*(pu1_out + (2 * i4_x) + (i4_y * i4_out_stride)) = CLIPUCHAR(
((g_au1_interp_filter_chroma[i4_x_phase]) * (*(pi4_interp_buff_temp)) +
(g_au1_interp_filter_chroma[16 + i4_x_phase]) * (*(pi4_interp_buff_temp + 1)) +
512) >>
10);
}
}
pi4_interp_buff = pi4_interp_buff + i4_refarray_wd;
}
}
/*****************************************************************************/
/* */
/* Function Name : isvc_intra_samp_mb_dyadic */
/* */
/* Description : MB level function which performs the intra resampling */
/* of data of an MB (luma and chroma inclusive) for dyadic */
/* scaling ratios */
/* */
/* Inputs : pv_intra_samp_ctxt : intra sampling context */
/* ps_ref_luma : reference layer luma data buffer desc */
/* ps_ref_chroma : reference layer chroma data buffer desc */
/* ps_ref_mb_mode_map : ref layer mb mode map buff desc */
/* ps_curr_luma : current layer out luma buffer desc */
/* ps_curr_chroma : current layer out chroma buffer desc */
/* x,y : current mb coorinate */
/* Globals : none */
/* Processing : it calls the reference layer construction followed by */
/* interpolation function for luma and cb and cr */
/* Outputs : inter resampled data of current MB */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 07 12 2010 Nithya creation */
/* */
/*****************************************************************************/
void isvc_intra_samp_mb_dyadic(void *pv_intra_samp_ctxt, mem_element_t *ps_ref_luma,
mem_element_t *ps_ref_chroma, mem_element_t *ps_ref_mb_mode_map,
mem_element_t *ps_curr_luma, mem_element_t *ps_curr_chroma,
UWORD16 u2_mb_x, UWORD16 u2_mb_y,
WORD32 i4_scaled_ref_layer_left_offset,
WORD32 i4_scaled_ref_layer_top_offset)
{
UWORD8 *pu1_inp_luma, *pu1_inp_chroma;
UWORD8 *pu1_out_luma, *pu1_out_chroma;
UWORD8 *pu1_out_cb, *pu1_out_cr;
UWORD8 *pu1_refarray_luma, *pu1_refarray_cb, *pu1_refarray_cr;
WORD16 *pi2_tmp_filt_buf;
WORD32 i4_inp_luma_stride, i4_inp_chroma_stride;
WORD32 i4_out_luma_stride, i4_out_chroma_stride;
UWORD16 u2_mb_x_ref, u2_mb_y_ref;
intra_sampling_ctxt_t *ps_ctxt;
intra_samp_lyr_ctxt *ps_lyr_ctxt;
WORD32 i4_scaled_mb_x, i4_scaled_mb_y;
WORD32 i4_top, i4_left;
ps_ctxt = (intra_sampling_ctxt_t *) pv_intra_samp_ctxt;
ps_lyr_ctxt = &ps_ctxt->as_res_lyrs[ps_ctxt->i4_res_lyr_id];
i4_scaled_mb_x = u2_mb_x - (i4_scaled_ref_layer_left_offset >> 4);
i4_scaled_mb_y = u2_mb_y - (i4_scaled_ref_layer_top_offset >> 4);
if(i4_scaled_mb_x & 0x1)
{
i4_left = 1;
}
else
{
i4_left = -1;
}
if(i4_scaled_mb_y & 0x1)
{
i4_top = 1;
}
else
{
i4_top = -1;
}
u2_mb_x_ref = (i4_scaled_mb_x >> 1);
u2_mb_y_ref = (i4_scaled_mb_y >> 1);
pu1_inp_luma = (UWORD8 *) ps_ref_luma->pv_buffer;
pu1_inp_chroma = (UWORD8 *) ps_ref_chroma->pv_buffer;
i4_inp_luma_stride = ps_ref_luma->i4_num_element_stride;
i4_inp_chroma_stride = ps_ref_chroma->i4_num_element_stride;
/* ------- Constructing refSampleArray ----------------------- */
isvc_reflayer_construction_dyadic(pv_intra_samp_ctxt, ps_ref_mb_mode_map, pu1_inp_luma,
pu1_inp_chroma, i4_inp_luma_stride, i4_inp_chroma_stride,
i4_top, i4_left, u2_mb_x_ref, u2_mb_y_ref);
/* --------------------------------------------------------------------- */
/* LUMA INTERPOLATION */
/* --------------------------------------------------------------------- */
pu1_refarray_luma = ps_ctxt->pu1_refarray_buffer;
if(1 == i4_top)
{
pu1_refarray_luma += (DYADIC_REF_W_Y << 3);
}
if(1 == i4_left)
{
pu1_refarray_luma += 8;
}
pu1_out_luma = (UWORD8 *) ps_curr_luma->pv_buffer;
i4_out_luma_stride = ps_curr_luma->i4_num_element_stride;
pi2_tmp_filt_buf = (WORD16 *) ps_ctxt->pi4_temp_interpolation_buffer;
ps_lyr_ctxt->pf_interpolate_luma(pu1_refarray_luma, pi2_tmp_filt_buf, pu1_out_luma,
i4_out_luma_stride);
/* --------------------------------------------------------------------- */
/* CHROMA INTERPOLATION */
/* --------------------------------------------------------------------- */
pu1_out_chroma = (UWORD8 *) ps_curr_chroma->pv_buffer;
i4_out_chroma_stride = ps_curr_chroma->i4_num_element_stride;
/* CB */
pu1_out_cb = pu1_out_chroma;
pu1_refarray_cb = ps_ctxt->pu1_refarray_cb;
if(1 == i4_top)
{
pu1_refarray_cb += (DYADIC_REF_W_C << 2);
}
if(1 == i4_left)
{
pu1_refarray_cb += 4;
}
/* Vertical interpolation */
ps_lyr_ctxt->pf_vert_interpol_chroma(pu1_refarray_cb, pi2_tmp_filt_buf,
ps_lyr_ctxt->i4_y_phase_0, ps_lyr_ctxt->i4_y_phase_1);
/* Horizontal interpolation */
ps_lyr_ctxt->pf_horz_interpol_chroma(pi2_tmp_filt_buf, pu1_out_cb, i4_out_chroma_stride,
ps_lyr_ctxt->i4_x_phase_0, ps_lyr_ctxt->i4_x_phase_1);
/* CR */
pu1_out_cr = pu1_out_chroma + 1;
pu1_refarray_cr = ps_ctxt->pu1_refarray_cr;
if(1 == i4_top)
{
pu1_refarray_cr += (DYADIC_REF_W_C << 2);
}
if(1 == i4_left)
{
pu1_refarray_cr += 4;
}
/* Vertical interpolation */
ps_lyr_ctxt->pf_vert_interpol_chroma(pu1_refarray_cr, pi2_tmp_filt_buf,
ps_lyr_ctxt->i4_y_phase_0, ps_lyr_ctxt->i4_y_phase_1);
/* Horizontal interpolation */
ps_lyr_ctxt->pf_horz_interpol_chroma(pi2_tmp_filt_buf, pu1_out_cr, i4_out_chroma_stride,
ps_lyr_ctxt->i4_x_phase_0, ps_lyr_ctxt->i4_x_phase_1);
}
/*****************************************************************************/
/* */
/* Function Name : isvc_intra_samp_mb */
/* */
/* Description : MB level function which performs the intra resampling */
/* of data of an MB (luma and chroma inclusive) */
/* */
/* Inputs : pv_intra_samp_ctxt : intra sampling context */
/* ps_ref_luma : reference layer luma data buffer desc */
/* ps_ref_chroma : reference layer chroma data buffer desc */
/* ps_ref_mb_mode_map : ref layer mb mode map buff desc */
/* ps_curr_luma : current layer out luma buffer desc */
/* ps_curr_chroma : current layer out chroma buffer desc */
/* x,y : current mb coorinate */
/* Globals : none */
/* Processing : it calls the reference layer construction followed by */
/* interpolation function for luma and cb and cr */
/* Outputs : inter resampled data of current MB */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 07 12 2010 Nithya creation */
/* */
/*****************************************************************************/
void isvc_intra_samp_mb(void *pv_intra_samp_ctxt_luma, void *pv_intra_samp_ctxt_chroma,
mem_element_t *ps_ref_luma, mem_element_t *ps_ref_chroma,
mem_element_t *ps_ref_mb_mode_map, mem_element_t *ps_curr_luma,
mem_element_t *ps_curr_chroma)
{
UWORD8 *pu1_inp_luma, *pu1_inp_chroma;
UWORD8 *pu1_out_luma, *pu1_out_chroma;
UWORD8 *pu1_out_cb, *pu1_out_cr;
WORD32 i4_inp_luma_stride, i4_inp_chroma_stride;
WORD32 i4_out_luma_stride, i4_out_chroma_stride;
WORD32 i4_chroma_flag, i4_refarray_stride;
intra_sampling_ctxt_t *ps_ctxt_luma;
intra_sampling_ctxt_t *ps_ctxt_chroma;
ps_ctxt_luma = (intra_sampling_ctxt_t *) pv_intra_samp_ctxt_luma;
ps_ctxt_chroma = (intra_sampling_ctxt_t *) pv_intra_samp_ctxt_chroma;
i4_refarray_stride = ps_ctxt_luma->i4_refarray_stride;
pu1_inp_luma = (UWORD8 *) ps_ref_luma->pv_buffer;
pu1_inp_chroma = (UWORD8 *) ps_ref_chroma->pv_buffer;
i4_inp_luma_stride = ps_ref_luma->i4_num_element_stride;
i4_inp_chroma_stride = ps_ref_chroma->i4_num_element_stride;
pu1_out_luma = (UWORD8 *) ps_curr_luma->pv_buffer;
i4_out_luma_stride = ps_curr_luma->i4_num_element_stride;
i4_chroma_flag = 0;
/* ------- Constructing refSampleArray ----------------------- */
isvc_reflayer_construction(pv_intra_samp_ctxt_luma, pu1_inp_luma, i4_inp_luma_stride,
i4_refarray_stride, ps_ref_mb_mode_map, i4_chroma_flag);
/* ---- Interpolation process for Intra_Base prediction ------ */
isvc_interpolate_intra_base(pv_intra_samp_ctxt_luma, pu1_out_luma, i4_out_luma_stride,
i4_refarray_stride, i4_chroma_flag, 0);
pu1_out_chroma = (UWORD8 *) ps_curr_chroma->pv_buffer;
i4_out_chroma_stride = ps_curr_chroma->i4_num_element_stride;
pu1_out_cb = pu1_out_chroma;
pu1_out_cr = pu1_out_cb + 1;
i4_refarray_stride = ps_ctxt_chroma->i4_refarray_stride;
i4_chroma_flag = 1;
/* ------- Constructing refSampleArray ----------------------- */
isvc_reflayer_construction(pv_intra_samp_ctxt_chroma, pu1_inp_chroma, i4_inp_chroma_stride,
i4_refarray_stride, ps_ref_mb_mode_map, i4_chroma_flag);
/* ---- Cb Interpolation process for Intra_Base prediction ------ */
isvc_interpolate_intra_base(pv_intra_samp_ctxt_chroma, pu1_out_cb, i4_out_chroma_stride,
i4_refarray_stride, i4_chroma_flag, 0);
/* ---- Cr Interpolation process for Intra_Base prediction ------ */
isvc_interpolate_intra_base(pv_intra_samp_ctxt_chroma, pu1_out_cr, i4_out_chroma_stride,
i4_refarray_stride, i4_chroma_flag, 1);
}
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