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chromium/aosp/platform/external/libavc/e31eedadef946934cc882c9eb4f31308422fd16e/./decoder/svc/isvcd_resamp_svc.c
blob: 32c5f97677a698f1650a71e7d97cd61f30b142ee [file] [log] [blame]
/******************************************************************************
*
* 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
*
* @author
* Kishore
*
* @remarks
* None
*
*******************************************************************************
*/
#include <assert.h>
#include <string.h>
#include "ih264_typedefs.h"
#include "ih264_macros.h"
#include "ih264_platform_macros.h"
#include "ih264d_bitstrm.h"
#include "ih264d_defs.h"
#include "ih264d_debug.h"
#include "ih264d_structs.h"
#include "ih264d_defs.h"
#include "ih264d_parse_cavlc.h"
#include "ih264d_mb_utils.h"
#include "ih264d_deblocking.h"
#include "ih264d_dpb_manager.h"
#include "ih264d_mvpred.h"
#include "ih264d_inter_pred.h"
#include "ih264d_process_pslice.h"
#include "ih264d_error_handler.h"
#include "ih264d_cabac.h"
#include "ih264d_debug.h"
#include "ih264d_tables.h"
#include "ih264d_parse_slice.h"
#include "ih264d_utils.h"
#include "ih264d_parse_islice.h"
#include "ih264d_process_bslice.h"
#include "ih264d_process_intra_mb.h"
#include "isvcd_resamp_svc.h"
#include "ih264_debug.h"
/*****************************************************************************/
/* */
/* Function Name : svcd_get_ceil_log2 */
/* */
/* Description : this function returns the CeilLog2 of the given number */
/* */
/* */
/* Inputs : i4_input : input number */
/* Globals : none */
/* Processing : it calculate the bits and returns it */
/* */
/* Outputs : none */
/* Returns : ceil of log to base 2 */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 05 04 2009 vijayakumar creation */
/* */
/*****************************************************************************/
WORD32 svcd_get_ceil_log2(WORD32 i4_input)
{
WORD32 i4_bits = 0;
/* check for negative number */
ASSERT(i4_input >= 0);
i4_input--;
while(i4_input > 0)
{
i4_bits++;
i4_input >>= 1;
} /* endof while input > 0 loop */
return (i4_bits);
}
/*****************************************************************************/
/* */
/* Function Name : svcd_2d_memset */
/* */
/* Description : Function performs 2D memset operation */
/* */
/* */
/* Inputs : 1. Buffer pointer */
/* 2. width */
/* 3. Height */
/* 4. Stride */
/* 5. value */
/* Globals : None */
/* Processing : calls memset fucntion */
/* */
/* Outputs : Updates the buffer */
/* Returns : status */
/* */
/* Issues : None */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 24 06 2009 Kishore Draft */
/* */
/*****************************************************************************/
void svcd_2d_memset(void *pv_buf, WORD32 i4_width, WORD32 i4_ht, WORD32 i4_stride, WORD32 i4_val)
{
WORD32 i4_y;
UWORD8 *pu1_buf;
pu1_buf = (UWORD8 *) pv_buf;
for(i4_y = 0; i4_y < i4_ht; i4_y++)
{
memset(pu1_buf, i4_val, i4_width);
/* Increment the pointer */
pu1_buf += i4_stride;
}
}
/*****************************************************************************/
/* */
/* Function Name : svcd_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 */
/* */
/*****************************************************************************/
void svcd_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);
/* loop for copy all the lines requried */
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;
}
return;
}
/*****************************************************************************/
/* */
/* Function Name : svcd_copy_data_semiplanr */
/* */
/* 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 */
/* i4_src_stride : source buffer stride */
/* pu1_dst1 : pointer to the destination buffer 1 */
/* pu1_dst2 : pointer to the destination buffer 2 */
/* i4_dst_stride : destination buffer stride */
/* i4_num_bytes : number of bytes to be copied */
/* i4_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 */
/* */
/*****************************************************************************/
void svcd_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;
if(NULL == pu1_src) ||(NULL == pu1_dst1) ||(NULL == pu1_dst2)){return;}
/* loop for copy all the lines requried */
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;
}
return;
}
/*****************************************************************************/
/* */
/* Function Name : svcd_get_ref_layer_avlblty_dyadic */
/* */
/* Description : This function is used to find the mb type of the */
/* corresponding MB in the reference layer for dyadic cases */
/* */
/* 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_ref_mb_x : reference MB location X */
/* i4_ref_mb_y : reference MB location Y */
/* pi4_mb_type : pointer to store the mb type */
/* i1_curr_slice_id : slice id of current MB */
/* i1_cons_intr_samp_flag :constrained intra resampling 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 */
/* */
/*****************************************************************************/
void svcd_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)
{
inter_lyr_mb_prms_t *ps_inter_lyr_mb_prms;
WORD8 i1_mb_mode;
/* get the location of the byte which has the current 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);
ps_inter_lyr_mb_prms = (inter_lyr_mb_prms_t *) pi1_ref_mb_modes;
i1_mb_mode = ps_inter_lyr_mb_prms->i1_mb_mode;
if(0 > i1_mb_mode)
{
/* INTER */
*pi4_avlblty = 0;
}
else
{
/* INTRA */
*pi4_avlblty = 1;
}
/* if constrained intra flag is 1 then check for same slice id */
if(1 == i1_cons_intr_samp_flag)
{
if(1 == *pi4_avlblty)
{
/* check for different slice idc */
if(i1_mb_mode != i1_curr_slice_id)
{
/* store the mode as not available for upsampling */
*pi4_avlblty = 0;
}
}
}
}
/*****************************************************************************/
/* */
/* Function Name : svcd_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 */
/* */
/*****************************************************************************/
UWORD8 svcd_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 : svcd_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 */
/* */
/*****************************************************************************/
void svcd_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 : svcd_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 */
/* */
/*****************************************************************************/
void svcd_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)
{
/* Index variables */
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;
/* --------------------------------------------------------------------- */
/* Context and reference layer related variables */
/* --------------------------------------------------------------------- */
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;
/* --------------------------------------------------------------------- */
/* Temp Variables for Mapping context */
/* --------------------------------------------------------------------- */
WORD32 i4_ref_wd_in_mbs;
WORD32 i4_ref_ht_in_mbs;
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;
/* --------------------------------------------------------------------- */
/* Local Pointer Declaration for arrays in Mapping context */
/* --------------------------------------------------------------------- */
UWORD8 *pu1_refarray_luma;
UWORD8 *pu1_refarray_cb, *pu1_refarray_cr;
/* --------------------------------------------------------------------- */
/* Derivation of local variables */
/* --------------------------------------------------------------------- */
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 constrained intra resampling flag */
/* --------------------------------------------------------------------- */
i1_cons_intr_samp_flag = ps_lyr_ctxt->i1_constrained_intra_rsmpl_flag;
ASSERT(NULL != pi1_ref_mb_modes);
i4_ref_wd_in_mbs = ps_lyr_ctxt->i4_ref_width >> 4;
i4_ref_ht_in_mbs = ps_lyr_ctxt->i4_ref_height >> 4;
pu1_refarray_luma = ps_ctxt->pu1_refarray_buffer;
pu1_refarray_cb = ps_ctxt->pu1_refarray_cb;
pu1_refarray_cr = ps_ctxt->pu1_refarray_cr;
/* --------------------------------------------------------------------- */
/* Get the coordinates of the reference layer MB */
/* --------------------------------------------------------------------- */
i4_mbaddr_x = u2_mb_x;
i4_mbaddr_y = u2_mb_y;
/* --------------------------------------------------------------------- */
/* Getting the size of the valid area of ref array to be brought in */
/* --------------------------------------------------------------------- */
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;
/* --------------------------------------------------------------------- */
/* Derivation of ref slice MB idc */
/* --------------------------------------------------------------------- */
if(1 == i1_cons_intr_samp_flag)
{
inter_lyr_mb_prms_t *ps_inter_lyr_mb_prms;
WORD8 *pi1_ref_mb_mode_tmp;
WORD8 i1_mb_mode;
/* get the location of the byte which has the current 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);
ps_inter_lyr_mb_prms = (inter_lyr_mb_prms_t *) pi1_ref_mb_mode_tmp;
i1_mb_mode = ps_inter_lyr_mb_prms->i1_mb_mode;
/* The reference layer MB should be intra */
ASSERT(i1_mb_mode >= 0);
i1_slice_id = i1_mb_mode;
}
else
{
/* set to non valid value */
i1_slice_id = -1;
}
/* --------------------------------------------------------------------- */
/* Bring in the reference array */
/* --------------------------------------------------------------------- */
{
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;
svcd_copy_data(pu1_src, i4_src_stride, pu1_dst, i4_dst_stride, i4_refarray_wd_luma,
i4_refarray_ht_luma);
// Semi planar
i4_src_stride = i4_inp_chroma_stride;
i4_dst_stride = DYADIC_REF_W_C;
pu1_src = pu1_inp_chroma;
svcd_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);
}
/* --------------------------------------------------------------------- */
/* Get the availability of 5 neighboring MBs */
/* --------------------------------------------------------------------- */
{
/* mb_x + left, mb_y + top */
svcd_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 */
svcd_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 */
svcd_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 */
svcd_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 */
svcd_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);
}
/* --------------------------------------------------------------------- */
/* Filling the unavailable samples, if any */
/* --------------------------------------------------------------------- */
if(0x7 == u1_ny_avlblty)
{
/* All are available, exit */
return;
}
if(!(u1_ny_avlblty & 0x7))
{
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 & 0x5))
{
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 & 0x3))
{
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 & 0x4))
{
if(!(u1_ny_avlblty & 0x8))
{
/* (mb_x-left,mb_y+top) not available */
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];
} /* if (mb_x-left,mb_y+top) not available */
else
{
WORD32 i4_xD, i4_yD;
WORD32 i4_c_xD, i4_c_yD;
UWORD8 u1_filled_samp;
svcd_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)
{
svcd_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++)
{
u1_filled_samp = svcd_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 */
u1_filled_samp = svcd_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD,
pu1_refarray_cb, DYADIC_REF_W_C);
u1_filled_samp = svcd_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD,
pu1_refarray_cr, DYADIC_REF_W_C);
}
}
if(!(u1_ny_avlblty & 0x2))
{
if(!(u1_ny_avlblty & 0x10))
{
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];
} /* if (mb_x+left,mb_y-top) not available */
else
{
WORD32 i4_xD, i4_yD;
WORD32 i4_c_xD, i4_c_yD;
UWORD8 u1_filled_samp;
svcd_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)
{
svcd_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++)
{
u1_filled_samp = svcd_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 */
u1_filled_samp = svcd_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD,
pu1_refarray_cb, DYADIC_REF_W_C);
u1_filled_samp = svcd_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD,
pu1_refarray_cr, DYADIC_REF_W_C);
}
}
if(u1_ny_avlblty & 1)
{
if(!(u1_ny_avlblty & 2))
{
/* (mb_x+left,mb_y) is unavailable */
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)
{
svcd_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 = svcd_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 = svcd_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 = svcd_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 = svcd_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 = svcd_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 = svcd_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 = svcd_diagonal_construct_dyadic(i4_xc0, i4_y, i4_c_xD, i4_c_yD,
pu1_refarray_cb, DYADIC_REF_W_C);
u1_filled_samp = svcd_diagonal_construct_dyadic(i4_xc0, i4_y, i4_c_xD, i4_c_yD,
pu1_refarray_cr, DYADIC_REF_W_C);
i4_c_yD++;
}
} /* (mb_x+left,mb_y) is unavailable */
if(!(u1_ny_avlblty & 4))
{
/* (mb_x,mb_y+top) is unavailable */
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)
{
svcd_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 = svcd_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 = svcd_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 = svcd_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 = svcd_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 = svcd_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 = svcd_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 = svcd_diagonal_construct_dyadic(i4_x, i4_yc0, i4_c_xD, i4_c_yD,
pu1_refarray_cb, DYADIC_REF_W_C);
u1_filled_samp = svcd_diagonal_construct_dyadic(i4_x, i4_yc0, i4_c_xD, i4_c_yD,
pu1_refarray_cr, DYADIC_REF_W_C);
i4_c_xD++;
}
} /* (mb_x,mb_y+top) is unavailable */
} /* if (mb_x+left,mb_y+top) not available */
else
{
UWORD8 *pu1_tmp_dst1, *pu1_tmp_dst2;
UWORD8 *pu1_tmp_src1, *pu1_tmp_src2;
if(0x02 == (u1_ny_avlblty & 0x6))
{
/* (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];
} /* if (mb_x+left,mb_y) available, (mb_x,mb_y+top) unavailable */
else if(0x04 == (u1_ny_avlblty & 0x6))
{
/* (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];
} /* if (mb_x+left,mb_y) unavailable, (mb_x,mb_y+top) available */
else if(0x6 == (u1_ny_avlblty & 0x6))
{
/* (mb_x+left,mb_y) available, (mb_x,mb_y+top) available */
WORD32 i4_xD, i4_yD;
WORD32 i4_c_xD, i4_c_yD;
UWORD8 u1_filled_samp;
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++)
{
u1_filled_samp = svcd_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 */
u1_filled_samp = svcd_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD,
pu1_refarray_cb, DYADIC_REF_W_C);
u1_filled_samp = svcd_diagonal_construct_dyadic(i4_xc0, i4_yc0, i4_c_xD, i4_c_yD,
pu1_refarray_cr, DYADIC_REF_W_C);
} /* if (mb_x+left,mb_y) available, (mb_x,mb_y+top) available */
} /* (mb_x+left,mb_y+top) available */
return;
}
/*****************************************************************************/
/* */
/* Function Name : svcd_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 svcd_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;
/* Store the output */
pi2_tmp[i4_x] = i4_rslt_1;
/* Increment the output ptr */
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;
} /* End of loop over y */
/* 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;
/* Store the output */
pi2_tmp[i4_x] = i4_rslt_1;
/* Reinitializing the ptrs */
pu1_inp = pu1_inp_buf;
pi2_tmp = pi2_tmp_filt_buf;
} /* End of loop over x */
/* 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;
/* Store the output */
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;
/* Store the output */
pu1_out[i4_x] = CLIPUCHAR(i4_rslt_1);
pu1_out[i4_x + 1] = CLIPUCHAR(i4_rslt_2);
} /* End of loop over x */
/* 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;
/* Store the output */
pu1_out[i4_x] = CLIPUCHAR(i4_rslt_1);
/* Increment the output ptr */
pu1_out += i4_out_stride;
} /* End of loop over y */
} /* svcd_interpolate_base_luma_dyadic */
/*****************************************************************************/
/* */
/* Function Name : svcd_vert_interpol_chroma_dyadic_1 */
/* */
/* 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 svcd_vert_interpol_chroma_dyadic_1(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 = 8 - i4_phase_0;
i4_coeff_1 = i4_phase_0;
i4_coeff_2 = 8 - 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;
/* Store the output */
pi2_tmp[i4_x] = i4_rslt_1;
/* Increment the output ptr */
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;
/* 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;
} /* End of loop over y */
/* 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;
/* Store the output */
pi2_tmp[i4_x] = i4_rslt_1;
/* Reinitializing the ptrs */
pu1_inp = pu1_inp_buf;
pi2_tmp = pi2_tmp_filt_buf;
} /* End of loop over x */
} /* svcd_vert_interpol_chroma_dyadic_1 */
/*****************************************************************************/
/* */
/* Function Name : svcd_vert_interpol_chroma_dyadic_2 */
/* */
/* 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 1 */
/* 0 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 svcd_vert_interpol_chroma_dyadic_2(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 = 8 - i4_phase_0;
i4_coeff_1 = i4_phase_0;
i4_coeff_2 = 8 - i4_phase_1;
i4_coeff_3 = i4_phase_1;
pi2_tmp = pi2_tmp_filt_buf;
i4_filt_stride = 6;
i4_src_stride = DYADIC_REF_W_C;
pu1_inp = pu1_inp_buf + i4_src_stride;
/* Vertical interpolation */
for(i4_x = 0; i4_x < 6; i4_x++)
{
i4_samp_1 = pu1_inp[i4_x];
pu1_inp += i4_src_stride;
for(i4_y = 0; i4_y < 8; 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_0;
i4_rslt_1 += i4_samp_1 * i4_coeff_1;
i4_rslt_2 = i4_samp_0 * i4_coeff_2;
i4_rslt_2 += i4_samp_1 * i4_coeff_3;
/* 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;
} /* End of loop over y */
/* Reinitializing the ptrs */
pu1_inp = pu1_inp_buf + i4_src_stride;
pi2_tmp = pi2_tmp_filt_buf;
} /* End of loop over x */
} /* svcd_vert_interpol_chroma_dyadic_2 */
/*****************************************************************************/
/* */
/* Function Name : svcd_vert_interpol_chroma_dyadic_3 */
/* */
/* 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 */
/* 2 0 */
/* 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) */
/* 13 12 2010 Nithya creation */
/* */
/*****************************************************************************/
void svcd_vert_interpol_chroma_dyadic_3(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 = 8 - i4_phase_0;
i4_coeff_1 = i4_phase_0;
i4_coeff_2 = 8 - i4_phase_1;
i4_coeff_3 = i4_phase_1;
pi2_tmp = pi2_tmp_filt_buf;
i4_filt_stride = 6;
i4_src_stride = DYADIC_REF_W_C;
pu1_inp = pu1_inp_buf;
/* Vertical interpolation */
for(i4_x = 0; i4_x < 6; i4_x++)
{
i4_samp_1 = pu1_inp[i4_x];
pu1_inp += i4_src_stride;
for(i4_y = 0; i4_y < 8; 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_0;
i4_rslt_1 += i4_samp_1 * i4_coeff_1;
i4_rslt_2 = i4_samp_0 * i4_coeff_2;
i4_rslt_2 += i4_samp_1 * i4_coeff_3;
/* 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;
} /* End of loop over y */
/* Reinitializing the ptrs */
pu1_inp = pu1_inp_buf;
pi2_tmp = pi2_tmp_filt_buf;
} /* End of loop over x */
} /* svcd_vert_interpol_chroma_dyadic_3 */
/*****************************************************************************/
/* */
/* Function Name : svcd_horz_interpol_chroma_dyadic_1 */
/* */
/* 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 svcd_horz_interpol_chroma_dyadic_1(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_filt_stride, i4_dst_stride;
UWORD8 *pu1_out;
WORD16 *pi2_tmp;
i4_coeff_0 = 8 - i4_phase_0;
i4_coeff_1 = i4_phase_0;
i4_coeff_2 = 8 - i4_phase_1;
i4_coeff_3 = i4_phase_1;
pu1_out = pu1_out_buf;
pi2_tmp = pi2_tmp_filt_buf;
i4_filt_stride = 6;
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 += 32;
i4_rslt_1 >>= 6;
/* Store the output */
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 += 32;
i4_rslt_1 >>= 6;
i4_rslt_2 += 32;
i4_rslt_2 >>= 6;
/* Storing the results */
pu1_out[2 * i4_x] = i4_rslt_1;
pu1_out[2 * (i4_x + 1)] = i4_rslt_2;
} /* End of loop over y */
/* 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 += 32;
i4_rslt_1 >>= 6;
/* Store the output */
pu1_out[2 * 7] = i4_rslt_1;
/* Incrementing the output ptr */
pu1_out += i4_dst_stride;
} /* End of loop over x */
} /* svcd_horz_interpol_chroma_dyadic_1 */
/*****************************************************************************/
/* */
/* Function Name : svcd_horz_interpol_chroma_dyadic_2 */
/* */
/* 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 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 svcd_horz_interpol_chroma_dyadic_2(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_filt_stride, i4_dst_stride;
UWORD8 *pu1_out;
WORD16 *pi2_tmp;
i4_coeff_0 = 8 - i4_phase_0;
i4_coeff_1 = i4_phase_0;
i4_coeff_2 = 8 - i4_phase_1;
i4_coeff_3 = i4_phase_1;
pu1_out = pu1_out_buf;
pi2_tmp = pi2_tmp_filt_buf + 1;
i4_filt_stride = 6;
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_1 = *pi2_tmp++;
for(i4_x = 0; i4_x < 8; 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_0;
i4_rslt_1 += i4_samp_1 * i4_coeff_1;
i4_rslt_2 = i4_samp_0 * i4_coeff_2;
i4_rslt_2 += i4_samp_1 * i4_coeff_3;
/* Rounding to 8-bit values */
i4_rslt_1 += 32;
i4_rslt_1 >>= 6;
i4_rslt_2 += 32;
i4_rslt_2 >>= 6;
/* Storing the results */
pu1_out[2 * i4_x] = i4_rslt_1;
pu1_out[2 * (i4_x + 1)] = i4_rslt_2;
} /* End of loop over x */
/* Incrementing the ptrs */
pi2_tmp += 1;
pu1_out += i4_dst_stride;
} /* End of loop over y */
} /* svcd_horz_interpol_chroma_dyadic_2 */
/*****************************************************************************/
/* */
/* Function Name : svcd_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 svcd_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, void *pv_dec)
{
/* --------------------------------------------------------------------- */
/* I/O buffer params */
/* --------------------------------------------------------------------- */
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;
dec_struct_t *ps_dec = (dec_struct_t *) pv_dec;
dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
/* --------------------------------------------------------------------- */
/* Intra resampling ctxt pointers */
/* --------------------------------------------------------------------- */
intra_sampling_ctxt_t *ps_ctxt;
intra_samp_lyr_ctxt *ps_lyr_ctxt;
res_prms_t *ps_res_prms;
/* --------------------------------------------------------------------- */
/* reference and current layer MB coordinates */
/* --------------------------------------------------------------------- */
WORD32 i4_scaled_mb_x, i4_scaled_mb_y;
WORD32 i4_top, i4_left;
ps_svc_slice_params = &ps_slice->s_svc_slice_params;
/* --------------------------------------------------------------------- */
/* Pointer derivation */
/* --------------------------------------------------------------------- */
ps_ctxt = (intra_sampling_ctxt_t *) pv_intra_samp_ctxt;
ps_lyr_ctxt = &ps_ctxt->as_res_lyrs[ps_ctxt->i4_res_lyr_id];
ps_res_prms = ps_ctxt->ps_res_prms;
/* --------------------------------------------------------------------- */
/* MB coordinate derivation */
/* --------------------------------------------------------------------- */
i4_scaled_mb_x = u2_mb_x - (ps_svc_slice_params->i4_scaled_ref_layer_left_offset >> 4);
// (ps_res_prms->s_ref_lyr_scaled_offset.i2_left >> 4); SVC_DEC_EXT_REVIEW
i4_scaled_mb_y = u2_mb_y - (ps_svc_slice_params->i4_scaled_ref_layer_top_offset >> 4);
//(ps_res_prms->s_ref_lyr_scaled_offset.i2_top >> 4); SVC_DEC_EXT_REVIEW
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);
/* --------------------------------------------------------------------- */
/* Reference Array Consrtuction - luma and chroma */
/* --------------------------------------------------------------------- */
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 ----------------------- */
svcd_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;
svcd_interpolate_base_luma_dyadic(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; // << 1; SVC_DEC_REVIEW_INTRA_RESAMPLE
/* 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_chroma_interpol(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_chroma_interpol(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;
// (i4_out_chroma_stride >> 1); SVC_DEC_REVIEW_INTRA_RESAMPLE
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_chroma_interpol(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_chroma_interpol(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);
return;
}
/*****************************************************************************/
/* */
/* Function Name : svcd_residual_chroma_dyadic_alt */
/* */
/* Description : this fucntion does the upsampling of chroma residuals for*/
/* Dyadic cases and specific chroma phase cases */
/* */
/* Inputs : pv_residual_samp_ctxt : Residual upsampling context */
/* pu1_inp_data : input 8 bit data pointer */
/* i4_inp_data_stride : input buffer stride */
/* pi2_out_res : output 16 bit buffer pointer */
/* i4_out_res_stride : Output buffer stride */
/* pu1_inp_bitmap : input packed sign bit data pointer */
/* i4_inp_bitmap_stride : sign bit buffer stride */
/* i4_start_bit_pos : bit position in the byte of packed */
/* sign values */
/* Globals : none */
/* Processing : it does the upsampling with intial phase values */
/* */
/* Outputs : Upsampled residuals for chroma */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 25 09 2010 vijayakumar creation */
/* */
/*****************************************************************************/
void svcd_residual_chroma_dyadic_alt(void *pv_residual_samp_ctxt, UWORD16 u2_mb_x, UWORD16 u2_mb_y,
mem_element_t *ps_ref_mb_mode, UWORD8 *pu1_inp_data,
WORD32 i4_inp_data_stride, WORD16 *pi2_out_res,
WORD32 i4_out_res_stride, UWORD8 *pu1_inp_bitmap,
WORD32 i4_inp_bitmap_stride, WORD32 i4_cr_flag)
{
residual_sampling_ctxt_t *ps_ctxt;
res_lyr_ctxt *ps_lyr_ctxt;
ps_ctxt = (residual_sampling_ctxt_t *) pv_residual_samp_ctxt;
ps_lyr_ctxt = &ps_ctxt->as_res_lyrs[ps_ctxt->i4_res_lyr_id];
/* ----------------- Processing ------------------------------- */
{
ref_pixel_map_t *ps_pos_phase;
residual_samp_map_ctxt_t *ps_chroma_map;
ref_mb_map_t *ps_x_off_len_chroma;
ref_mb_map_t *ps_y_off_len_chroma;
WORD32 i4_i;
UWORD8 *pu1_ref_data_byte, *pu1_ref_sign_byte;
WORD32 *pi4_ref_array;
WORD32 i4_phase1, i4_phase2;
WORD32 i4_start_bit_pos = 0;
WORD32 i4_offset_x, i4_offset_y;
WORD32 i4_chrm_horz_int_mode, i4_chrm_vert_int_mode;
WORD32 i4_horz_intp_ctr = SUB_BLOCK_HEIGHT;
ps_chroma_map = &ps_lyr_ctxt->s_chroma_map_ctxt;
ps_x_off_len_chroma = ps_chroma_map->ps_x_offset_length;
ps_y_off_len_chroma = ps_chroma_map->ps_y_offset_length;
/* get the actual offset for the buffers */
i4_offset_x = ps_x_off_len_chroma[u2_mb_x].i2_offset;
i4_offset_y = ps_y_off_len_chroma[u2_mb_y].i2_offset;
{
UWORD8 u1_mask;
WORD32 i4_mb_x, i4_mb_y;
WORD32 i4_chrm_nnz;
WORD32 i4_num_element_stride;
inter_lyr_mb_prms_t *ps_inter_lyr_mb_prms, *ps_inter_lyr_mb_prms_curr;
u1_mask = (SVCD_TRUE == i4_cr_flag) ? 0xF0 : 0x0F;
/* Top Left */
i4_mb_x = i4_offset_x >> 3;
i4_mb_y = i4_offset_y >> 3;
/* get the location of the byte which has the current mb mode */
ps_inter_lyr_mb_prms = ps_ref_mb_mode->pv_buffer;
i4_num_element_stride = ps_ref_mb_mode->i4_num_element_stride;
ps_inter_lyr_mb_prms_curr = ps_inter_lyr_mb_prms + i4_mb_x;
ps_inter_lyr_mb_prms_curr += i4_mb_y * i4_num_element_stride;
i4_chrm_nnz = ps_inter_lyr_mb_prms_curr->u1_chroma_nnz & u1_mask;
/* Top Right */
i4_mb_x = (i4_offset_x + 4) >> 3;
ps_inter_lyr_mb_prms_curr = ps_inter_lyr_mb_prms + i4_mb_x;
ps_inter_lyr_mb_prms_curr += i4_mb_y * i4_num_element_stride;
i4_chrm_nnz |= ps_inter_lyr_mb_prms_curr->u1_chroma_nnz & u1_mask;
/* Bottom Left */
i4_mb_x = i4_offset_x >> 3;
i4_mb_y = (i4_offset_y + 4) >> 3;
ps_inter_lyr_mb_prms_curr = ps_inter_lyr_mb_prms + i4_mb_x;
ps_inter_lyr_mb_prms_curr += i4_mb_y * i4_num_element_stride;
i4_chrm_nnz |= ps_inter_lyr_mb_prms_curr->u1_chroma_nnz & u1_mask;
/* Bottom Right */
i4_mb_x = (i4_offset_x + 4) >> 3;
ps_inter_lyr_mb_prms_curr = ps_inter_lyr_mb_prms + i4_mb_x;
ps_inter_lyr_mb_prms_curr += i4_mb_y * i4_num_element_stride;
i4_chrm_nnz |= ps_inter_lyr_mb_prms_curr->u1_chroma_nnz & u1_mask;
if(0 == i4_chrm_nnz)
{
return;
}
}
i4_chrm_horz_int_mode = ps_lyr_ctxt->i4_chrm_horz_int_mode;
i4_chrm_vert_int_mode = ps_lyr_ctxt->i4_chrm_vert_int_mode;
if(0 == i4_chrm_horz_int_mode)
{
if(i4_offset_x >= 0)
{
pu1_inp_data++;
if(0 == ((i4_offset_x + 1) & 7))
{
pu1_inp_bitmap++;
}
}
}
if(0 == i4_chrm_vert_int_mode)
{
if(i4_offset_y >= 0)
{
pu1_inp_data += i4_inp_data_stride;
pu1_inp_bitmap += i4_inp_bitmap_stride;
}
}
else
{
/* extra additional row of interpolation required for this case */
i4_horz_intp_ctr++;
}
/* set the appropriate bit pos */
if(1 == (u2_mb_x & 1))
{
i4_start_bit_pos = 4;
}
/* ----------- Horizontal Interpolation ---------------- */
pu1_ref_data_byte = pu1_inp_data;
pu1_ref_sign_byte = pu1_inp_bitmap;
ps_pos_phase = ps_lyr_ctxt->s_chroma_map_ctxt.ps_x_pos_phase;
pi4_ref_array = (WORD32 *) ps_ctxt->pi2_refarray_buffer;
i4_phase1 = ps_pos_phase[0].i2_phase;
i4_phase2 = (i4_phase1 + 8) & 0x0F;
/* interchange the phase values for corner case */
if(1 == i4_chrm_horz_int_mode)
{
WORD32 i4_temp;
i4_temp = i4_phase1;
i4_phase1 = i4_phase2;
i4_phase2 = i4_temp;
}
for(i4_i = 0; i4_i < i4_horz_intp_ctr; i4_i++)
{
WORD16 i2_coeff1, i2_coeff2;
UWORD8 u1_sign;
UWORD8 u1_sign_byte = *pu1_ref_sign_byte;
i2_coeff1 = (WORD16) (pu1_ref_data_byte[0]);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, i4_start_bit_pos);
/* if signed number */
if(u1_sign)
{
i2_coeff1 |= 0xFF00;
}
if(0 == i4_chrm_horz_int_mode)
{
/* populate the first inter sample */
*pi4_ref_array++ = i2_coeff1 << 4;
}
{
/* unroll count 1 */
i2_coeff2 = (WORD16) (pu1_ref_data_byte[1]);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, (i4_start_bit_pos + 1));
/* if signed number */
if(u1_sign)
{
i2_coeff2 |= 0xFF00;
}
/* populate 2 samples based on current coeffs */
*pi4_ref_array++ = ((16 - i4_phase2) * i2_coeff1 + i4_phase2 * i2_coeff2);
*pi4_ref_array++ = ((16 - i4_phase1) * i2_coeff1 + i4_phase1 * i2_coeff2);
/* unroll count 2 */
i2_coeff1 = (WORD16) (pu1_ref_data_byte[2]);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, (i4_start_bit_pos + 2));
/* if signed number */
if(u1_sign)
{
i2_coeff1 |= 0xFF00;
}
/* populate 2 samples based on current coeffs */
*pi4_ref_array++ = ((16 - i4_phase2) * i2_coeff2 + i4_phase2 * i2_coeff1);
*pi4_ref_array++ = ((16 - i4_phase1) * i2_coeff2 + i4_phase1 * i2_coeff1);
/* unroll count 3 */
i2_coeff2 = (WORD16) (pu1_ref_data_byte[3]);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, (i4_start_bit_pos + 3));
/* if signed number */
if(u1_sign)
{
i2_coeff2 |= 0xFF00;
}
/* populate 2 samples based on current coeffs */
*pi4_ref_array++ = ((16 - i4_phase2) * i2_coeff1 + i4_phase2 * i2_coeff2);
*pi4_ref_array++ = ((16 - i4_phase1) * i2_coeff1 + i4_phase1 * i2_coeff2);
}
/* populate the last inter sample */
*pi4_ref_array++ = i2_coeff2 << 4;
if(1 == i4_chrm_horz_int_mode)
{
WORD32 i4_bit_pos = i4_start_bit_pos + 4;
if(8 == i4_bit_pos)
{
u1_sign_byte = *(pu1_ref_sign_byte + 1);
i4_bit_pos = 0;
}
i2_coeff1 = (WORD16) (pu1_ref_data_byte[4]);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, i4_bit_pos);
/* if signed number */
if(u1_sign)
{
i2_coeff1 |= 0xFF00;
}
/* populate the last inter sample */
*pi4_ref_array++ = i2_coeff1 << 4;
}
/* vertical loop updates */
pu1_ref_data_byte = pu1_inp_data + ((i4_i + 1) * i4_inp_data_stride);
pu1_ref_sign_byte += i4_inp_bitmap_stride;
}
/* ----------- Vertical Interpolation ---------------- */
pi4_ref_array = (WORD32 *) ps_ctxt->pi2_refarray_buffer;
ps_pos_phase = ps_lyr_ctxt->s_chroma_map_ctxt.ps_y_pos_phase;
i4_phase1 = ps_pos_phase[0].i2_phase;
i4_phase2 = (i4_phase1 + 8) & 0x0F;
/* interchange the phase values for corner case */
if(0 != i4_chrm_vert_int_mode)
{
WORD32 i4_temp;
i4_temp = i4_phase1;
i4_phase1 = i4_phase2;
i4_phase2 = i4_temp;
}
for(i4_i = 0; i4_i < BLOCK_WIDTH; i4_i++)
{
WORD16 *pi2_out;
WORD32 *pi4_ref_array_temp;
WORD32 i4_horz_samp_1, i4_horz_samp_2;
pi2_out = pi2_out_res;
pi4_ref_array_temp = pi4_ref_array;
/* populate the first inter sample */
i4_horz_samp_1 = *pi4_ref_array_temp;
pi4_ref_array_temp += BLOCK_WIDTH;
if(1 != i4_chrm_vert_int_mode)
{
*pi2_out = (i4_horz_samp_1 + 8) >> 4;
pi2_out += i4_out_res_stride;
}
if(2 == i4_chrm_vert_int_mode)
{
i4_horz_samp_1 = *pi4_ref_array_temp;
pi4_ref_array_temp += BLOCK_WIDTH;
*pi2_out = (i4_horz_samp_1 + 8) >> 4;
pi2_out += i4_out_res_stride;
}
{
/* unroll count 1 */
i4_horz_samp_2 = *pi4_ref_array_temp;
pi4_ref_array_temp += BLOCK_WIDTH;
/* populate 2 samples based on current coeffs */
*pi2_out =
((16 - i4_phase2) * i4_horz_samp_1 + i4_phase2 * i4_horz_samp_2 + 128) >> 8;
pi2_out += i4_out_res_stride;
/* unroll count 2 */
*pi2_out =
((16 - i4_phase1) * i4_horz_samp_1 + i4_phase1 * i4_horz_samp_2 + 128) >> 8;
pi2_out += i4_out_res_stride;
/* unroll count 3 */
i4_horz_samp_1 = *pi4_ref_array_temp;
pi4_ref_array_temp += BLOCK_WIDTH;
/* populate 2 samples based on current coeffs */
*pi2_out =
((16 - i4_phase2) * i4_horz_samp_2 + i4_phase2 * i4_horz_samp_1 + 128) >> 8;
pi2_out += i4_out_res_stride;
/* unroll count 4 */
*pi2_out =
((16 - i4_phase1) * i4_horz_samp_2 + i4_phase1 * i4_horz_samp_1 + 128) >> 8;
pi2_out += i4_out_res_stride;
/* unroll count 5 */
i4_horz_samp_2 = *pi4_ref_array_temp;
/* populate 2 samples based on current coeffs */
*pi2_out =
((16 - i4_phase2) * i4_horz_samp_1 + i4_phase2 * i4_horz_samp_2 + 128) >> 8;
pi2_out += i4_out_res_stride;
/* unroll count 6 */
*pi2_out =
((16 - i4_phase1) * i4_horz_samp_1 + i4_phase1 * i4_horz_samp_2 + 128) >> 8;
pi2_out += i4_out_res_stride;
}
if(2 != i4_chrm_vert_int_mode)
{
/* populate the last inter sample */
*pi2_out = (i4_horz_samp_2 + 8) >> 4;
if(1 == i4_chrm_vert_int_mode)
{
pi2_out += i4_out_res_stride;
pi4_ref_array_temp += BLOCK_WIDTH;
i4_horz_samp_1 = *pi4_ref_array_temp;
/* populate the last inter sample */
*pi2_out = (i4_horz_samp_1 + 8) >> 4;
}
}
/* horizontal loop updates */
pi4_ref_array++;
pi2_out_res++;
}
}
return;
}
/*****************************************************************************/
/* */
/* Function Name : svcd_residual_chroma_dyadic */
/* */
/* Description : this fucntion does the upsampling of chroma residuals for*/
/* Dyadic cases */
/* */
/* Inputs : pv_residual_samp_ctxt : Residual upsampling context */
/* pu1_inp_data : input 8 bit data pointer */
/* i4_inp_data_stride : input buffer stride */
/* pi2_out_res : output 16 bit buffer pointer */
/* i4_out_res_stride : Output buffer stride */
/* pu1_inp_bitmap : input packed sign bit data pointer */
/* i4_inp_bitmap_stride : sign bit buffer stride */
/* i4_start_bit_pos : bit position in the byte of packed */
/* sign values */
/* Globals : none */
/* Processing : it does the upsampling with intial phase values */
/* */
/* Outputs : Upsampled residuals for chroma */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 25 09 2010 vijayakumar creation */
/* */
/*****************************************************************************/
void svcd_residual_chroma_dyadic(void *pv_residual_samp_ctxt, UWORD8 *pu1_inp_data,
WORD32 i4_inp_data_stride, WORD16 *pi2_out_res,
WORD32 i4_out_res_stride, UWORD8 *pu1_inp_bitmap,
WORD32 i4_inp_bitmap_stride, WORD32 i4_start_bit_pos)
{
residual_sampling_ctxt_t *ps_ctxt;
res_lyr_ctxt *ps_lyr_ctxt;
ps_ctxt = (residual_sampling_ctxt_t *) pv_residual_samp_ctxt;
ps_lyr_ctxt = &ps_ctxt->as_res_lyrs[ps_ctxt->i4_res_lyr_id];
/* ----------------- Processing ------------------------------- */
{
WORD32 i4_i;
UWORD8 *pu1_ref_data_byte, *pu1_ref_sign_byte;
WORD32 *pi4_ref_array;
ref_pixel_map_t *ps_pos_phase;
WORD32 i4_phase1, i4_phase2;
pu1_ref_data_byte = pu1_inp_data;
pu1_ref_sign_byte = pu1_inp_bitmap;
ps_pos_phase = ps_lyr_ctxt->s_chroma_map_ctxt.ps_x_pos_phase;
/* ----------- Horizontal Interpolation ---------------- */
pi4_ref_array = (WORD32 *) ps_ctxt->pi2_refarray_buffer;
i4_phase1 = ps_pos_phase[0].i2_phase;
i4_phase2 = (i4_phase1 + 8) & 0x0F;
for(i4_i = 0; i4_i < SUB_BLOCK_HEIGHT; i4_i++)
{
WORD16 i2_coeff1, i2_coeff2;
UWORD8 u1_sign;
UWORD8 u1_sign_byte = *pu1_ref_sign_byte;
i2_coeff1 = (WORD16) (pu1_ref_data_byte[0]);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, i4_start_bit_pos);
/* if signed number */
if(u1_sign)
{
i2_coeff1 |= 0xFF00;
}
/* populate the first inter sample */
*pi4_ref_array++ = i2_coeff1 << 4;
{
/* unroll count 1 */
i2_coeff2 = (WORD16) (pu1_ref_data_byte[1]);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, (i4_start_bit_pos + 1));
/* if signed number */
if(u1_sign)
{
i2_coeff2 |= 0xFF00;
}
/* populate 2 samples based on current coeffs */
*pi4_ref_array++ = ((16 - i4_phase2) * i2_coeff1 + i4_phase2 * i2_coeff2);
/* unroll count 2 */
*pi4_ref_array++ = ((16 - i4_phase1) * i2_coeff1 + i4_phase1 * i2_coeff2);
/* unroll count 3 */
i2_coeff1 = (WORD16) (pu1_ref_data_byte[2]);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, (i4_start_bit_pos + 2));
/* if signed number */
if(u1_sign)
{
i2_coeff1 |= 0xFF00;
}
/* populate 2 samples based on current coeffs */
*pi4_ref_array++ = ((16 - i4_phase2) * i2_coeff2 + i4_phase2 * i2_coeff1);
/* unroll count 4 */
*pi4_ref_array++ = ((16 - i4_phase1) * i2_coeff2 + i4_phase1 * i2_coeff1);
/* unroll count 5 */
i2_coeff2 = (WORD16) (pu1_ref_data_byte[3]);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, (i4_start_bit_pos + 3));
/* if signed number */
if(u1_sign)
{
i2_coeff2 |= 0xFF00;
}
/* populate 2 samples based on current coeffs */
*pi4_ref_array++ = ((16 - i4_phase2) * i2_coeff1 + i4_phase2 * i2_coeff2);
/* unroll count 6 */
*pi4_ref_array++ = ((16 - i4_phase1) * i2_coeff1 + i4_phase1 * i2_coeff2);
}
/* populate the last inter sample */
*pi4_ref_array++ = i2_coeff2 << 4;
/* vertical loop uopdates */
pu1_ref_data_byte = pu1_inp_data + ((i4_i + 1) * i4_inp_data_stride);
pu1_ref_sign_byte += i4_inp_bitmap_stride;
}
/* ----------- Vertical Interpolation ---------------- */
pi4_ref_array = (WORD32 *) ps_ctxt->pi2_refarray_buffer;
ps_pos_phase = ps_lyr_ctxt->s_chroma_map_ctxt.ps_y_pos_phase;
i4_phase1 = ps_pos_phase[0].i2_phase;
i4_phase2 = (i4_phase1 + 8) & 0x0F;
for(i4_i = 0; i4_i < BLOCK_WIDTH; i4_i++)
{
WORD16 *pi2_out;
WORD32 *pi4_ref_array_temp;
WORD32 i4_horz_samp_1, i4_horz_samp_2;
pi2_out = pi2_out_res;
pi4_ref_array_temp = pi4_ref_array;
/* populate the first inter sample */
i4_horz_samp_1 = *pi4_ref_array_temp;
pi4_ref_array_temp += BLOCK_WIDTH;
*pi2_out = (i4_horz_samp_1 + 8) >> 4;
pi2_out += i4_out_res_stride;
{
/* unroll count 1 */
i4_horz_samp_2 = *pi4_ref_array_temp;
pi4_ref_array_temp += BLOCK_WIDTH;
/* populate 2 samples based on current coeffs */
*pi2_out =
((16 - i4_phase2) * i4_horz_samp_1 + i4_phase2 * i4_horz_samp_2 + 128) >> 8;
pi2_out += i4_out_res_stride;
/* unroll count 2 */
*pi2_out =
((16 - i4_phase1) * i4_horz_samp_1 + i4_phase1 * i4_horz_samp_2 + 128) >> 8;
pi2_out += i4_out_res_stride;
/* unroll count 3 */
i4_horz_samp_1 = *pi4_ref_array_temp;
pi4_ref_array_temp += BLOCK_WIDTH;
/* populate 2 samples based on current coeffs */
*pi2_out =
((16 - i4_phase2) * i4_horz_samp_2 + i4_phase2 * i4_horz_samp_1 + 128) >> 8;
pi2_out += i4_out_res_stride;
/* unroll count 4 */
*pi2_out =
((16 - i4_phase1) * i4_horz_samp_2 + i4_phase1 * i4_horz_samp_1 + 128) >> 8;
pi2_out += i4_out_res_stride;
/* unroll count 5 */
i4_horz_samp_2 = *pi4_ref_array_temp;
/* populate 2 samples based on current coeffs */
*pi2_out =
((16 - i4_phase2) * i4_horz_samp_1 + i4_phase2 * i4_horz_samp_2 + 128) >> 8;
pi2_out += i4_out_res_stride;
/* unroll count 6 */
*pi2_out =
((16 - i4_phase1) * i4_horz_samp_1 + i4_phase1 * i4_horz_samp_2 + 128) >> 8;
pi2_out += i4_out_res_stride;
}
/* populate the last inter sample */
*pi2_out = (i4_horz_samp_2 + 8) >> 4;
/* horizontal loop updates */
pi4_ref_array++;
pi2_out_res++;
}
}
return;
}
/*****************************************************************************/
/* */
/* Function Name : svcd_residual_luma_dyadic */
/* */
/* Description : this fucntion does the upsampling of luma residuals for */
/* Dyadic cases */
/* */
/* Inputs : pv_residual_samp_ctxt : Residual upsampling context */
/* pu1_inp_data : input 8 bit data pointer */
/* i4_inp_data_stride : input buffer stride */
/* pi2_out_res : output 16 bit buffer pointer */
/* i4_out_res_stride : Output buffer stride */
/* pu1_inp_bitmap : input packed sign bit data pointer */
/* i4_inp_bitmap_stride : sign bit buffer stride */
/* ps_ref_mb_mode : reference mb mode pointer of base layer */
/* ps_coord : mb co-ordinate pointer */
/* Globals : none */
/* Processing : it does the upsampling with fixed phase values and */
/* reference layer transform size */
/* Outputs : Upsampled residuals for luma */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 25 09 2010 vijayakumar creation */
/* */
/*****************************************************************************/
void svcd_residual_luma_dyadic(void *pv_residual_samp_ctxt, UWORD8 *pu1_inp_data,
WORD32 i4_inp_data_stride, WORD16 *pi2_out_res,
WORD32 i4_out_res_stride, UWORD8 *pu1_inp_bitmap,
WORD32 i4_inp_bitmap_stride, mem_element_t *ps_ref_mb_mode,
UWORD16 u2_mb_x, UWORD16 u2_mb_y, WORD32 i4_ref_nnz,
WORD32 i4_ref_tx_size)
{
WORD16 *pi2_refarray_buffer;
WORD32 i4_start_bit_pos = 0;
WORD32 i4_blk_ctr;
residual_sampling_ctxt_t *ps_ctxt;
ps_ctxt = (residual_sampling_ctxt_t *) pv_residual_samp_ctxt;
pi2_refarray_buffer = ps_ctxt->pi2_refarray_buffer;
/* based on transform size the counter and interpolation width and */
/* height are intialised as follows */
if((i4_ref_tx_size) && (0 != i4_ref_nnz))
{
UWORD8 *pu1_ref_data_byte, *pu1_ref_sign_byte;
WORD32 *pi4_ref_array;
WORD32 i4_i, i4_j;
pu1_ref_data_byte = pu1_inp_data;
pu1_ref_sign_byte = pu1_inp_bitmap;
/* ----------- Horizontal Interpolation ---------------- */
pi4_ref_array = (WORD32 *) pi2_refarray_buffer;
for(i4_i = 0; i4_i < BLOCK_HEIGHT; i4_i++)
{
WORD16 i2_coeff1, i2_coeff2;
UWORD8 u1_sign;
WORD32 i4_bit_pos = i4_start_bit_pos;
UWORD8 u1_sign_byte = *pu1_ref_sign_byte;
i2_coeff1 = (WORD16) (*pu1_ref_data_byte++);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, i4_bit_pos);
/* if signed number */
if(u1_sign)
{
i2_coeff1 |= 0xFF00;
}
/* populate the first inter sample */
*pi4_ref_array++ = i2_coeff1 << 2;
for(i4_j = 0; i4_j < 14; i4_j += 2)
{
i4_bit_pos++;
i2_coeff2 = (WORD16) (*pu1_ref_data_byte++);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, i4_bit_pos);
/* if signed number */
if(u1_sign)
{
i2_coeff2 |= 0xFF00;
}
/* populate 2 samples based on current coeffs */
*pi4_ref_array++ = ((i2_coeff1 << 1) + (i2_coeff1) + (i2_coeff2));
*pi4_ref_array++ = ((i2_coeff2 << 1) + (i2_coeff2) + (i2_coeff1));
/* store the coeff 2 to coeff 1 */
/* (used in next iteration) */
i2_coeff1 = i2_coeff2;
}
/* populate the last inter sample */
*pi4_ref_array++ = i2_coeff1 << 2;
/* vertical loop uopdates */
pu1_ref_data_byte = pu1_inp_data + ((i4_i + 1) * i4_inp_data_stride);
pu1_ref_sign_byte += i4_inp_bitmap_stride;
}
/* ----------- Vertical Interpolation ---------------- */
pi4_ref_array = (WORD32 *) pi2_refarray_buffer;
for(i4_i = 0; i4_i < MB_WIDTH; i4_i++)
{
WORD32 *pi4_ref_array_temp;
WORD16 *pi2_out;
WORD32 i4_horz_samp_1, i4_horz_samp_2;
pi4_ref_array_temp = pi4_ref_array;
pi2_out = pi2_out_res;
i4_horz_samp_1 = *pi4_ref_array_temp;
/* populate the first inter sample */
*pi2_out = (i4_horz_samp_1 + 2) >> 2;
pi2_out += i4_out_res_stride;
for(i4_j = 0; i4_j < 14; i4_j += 2)
{
pi4_ref_array_temp += MB_WIDTH;
i4_horz_samp_2 = *pi4_ref_array_temp;
/* populate 2 samples based on current coeffs */
*pi2_out = ((i4_horz_samp_1 << 1) + (i4_horz_samp_1) + (i4_horz_samp_2) + 8) >> 4;
pi2_out += i4_out_res_stride;
*pi2_out = ((i4_horz_samp_2 << 1) + (i4_horz_samp_2) + (i4_horz_samp_1) + 8) >> 4;
pi2_out += i4_out_res_stride;
/* store the coeff 2 to coeff 1 */
/* (used in next iteration) */
i4_horz_samp_1 = i4_horz_samp_2;
}
/* populate the first inter sample */
*pi2_out = (i4_horz_samp_1 + 2) >> 2;
/* horizontal loop updates */
pi4_ref_array++;
pi2_out_res++;
}
}
else
{
/* ----------------------------------------------------------------- */
/* LOOP over number of blocks */
/* ----------------------------------------------------------------- */
for(i4_blk_ctr = 0; i4_blk_ctr < 4; i4_blk_ctr++)
{
UWORD8 *pu1_ref_data_byte, *pu1_ref_sign_byte;
WORD32 *pi4_ref_array;
WORD32 i4_i;
/* if reference layer is not coded then no processing */
if(0 != (i4_ref_nnz & 0x1))
{
pu1_ref_data_byte = pu1_inp_data;
pu1_ref_sign_byte = pu1_inp_bitmap;
/* ----------- Horizontal Interpolation ---------------- */
pi4_ref_array = (WORD32 *) pi2_refarray_buffer;
for(i4_i = 0; i4_i < SUB_BLOCK_HEIGHT; i4_i++)
{
WORD16 i2_coeff1, i2_coeff2;
UWORD8 u1_sign;
WORD32 i4_bit_pos = i4_start_bit_pos;
UWORD8 u1_sign_byte = *pu1_ref_sign_byte;
;
i2_coeff1 = (WORD16) (*pu1_ref_data_byte++);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, i4_bit_pos);
/* if signed number */
if(u1_sign)
{
i2_coeff1 |= 0xFF00;
}
/* populate the first inter sample */
*pi4_ref_array++ = i2_coeff1 << 2;
{
/* unroll count 1 */
i4_bit_pos++;
i2_coeff2 = (WORD16) (*pu1_ref_data_byte++);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, i4_bit_pos);
/* if signed number */
if(u1_sign)
{
i2_coeff2 |= 0xFF00;
}
/* populate 2 samples based on current coeffs */
*pi4_ref_array++ = ((i2_coeff1 << 1) + (i2_coeff1) + (i2_coeff2));
*pi4_ref_array++ = ((i2_coeff2 << 1) + (i2_coeff2) + (i2_coeff1));
/* unroll count 2 */
i4_bit_pos++;
i2_coeff1 = (WORD16) (*pu1_ref_data_byte++);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, i4_bit_pos);
/* if signed number */
if(u1_sign)
{
i2_coeff1 |= 0xFF00;
}
/* populate 2 samples based on current coeffs */
*pi4_ref_array++ = ((i2_coeff2 << 1) + (i2_coeff2) + (i2_coeff1));
*pi4_ref_array++ = ((i2_coeff1 << 1) + (i2_coeff1) + (i2_coeff2));
/* unroll count 3 */
i4_bit_pos++;
i2_coeff2 = (WORD16) (*pu1_ref_data_byte++);
u1_sign = (UWORD8) GET_BIT(u1_sign_byte, i4_bit_pos);
/* if signed number */
if(u1_sign)
{
i2_coeff2 |= 0xFF00;
}
/* populate 2 samples based on current coeffs */
*pi4_ref_array++ = ((i2_coeff1 << 1) + (i2_coeff1) + (i2_coeff2));
*pi4_ref_array++ = ((i2_coeff2 << 1) + (i2_coeff2) + (i2_coeff1));
}
/* populate the last inter sample */
*pi4_ref_array++ = i2_coeff2 << 2;
/* vertical loop uopdates */
pu1_ref_data_byte = pu1_inp_data + ((i4_i + 1) * i4_inp_data_stride);
pu1_ref_sign_byte += i4_inp_bitmap_stride;
}
/* ----------- Vertical Interpolation ---------------- */
pi4_ref_array = (WORD32 *) pi2_refarray_buffer;
for(i4_i = 0; i4_i < BLOCK_WIDTH; i4_i++)
{
WORD32 *pi4_ref_array_temp;
WORD16 *pi2_out;
WORD32 i4_horz_samp_1, i4_horz_samp_2;
pi4_ref_array_temp = pi4_ref_array;
pi2_out = pi2_out_res;
i4_horz_samp_1 = *pi4_ref_array_temp;
/* populate the first inter sample */
*pi2_out = (i4_horz_samp_1 + 2) >> 2;
pi2_out += i4_out_res_stride;
{
/* unroll loop count 1 */
pi4_ref_array_temp += BLOCK_WIDTH;
i4_horz_samp_2 = *pi4_ref_array_temp;
/* populate 2 samples based on current coeffs */
*pi2_out =
((i4_horz_samp_1 << 1) + (i4_horz_samp_1) + (i4_horz_samp_2) + 8) >> 4;
pi2_out += i4_out_res_stride;
*pi2_out =
((i4_horz_samp_2 << 1) + (i4_horz_samp_2) + (i4_horz_samp_1) + 8) >> 4;
pi2_out += i4_out_res_stride;
/* unroll loop count 2 */
pi4_ref_array_temp += BLOCK_WIDTH;
i4_horz_samp_1 = *pi4_ref_array_temp;
/* populate 2 samples based on current coeffs */
*pi2_out =
((i4_horz_samp_2 << 1) + (i4_horz_samp_2) + (i4_horz_samp_1) + 8) >> 4;
pi2_out += i4_out_res_stride;
*pi2_out =
((i4_horz_samp_1 << 1) + (i4_horz_samp_1) + (i4_horz_samp_2) + 8) >> 4;
pi2_out += i4_out_res_stride;
/* unroll loop count 3 */
pi4_ref_array_temp += BLOCK_WIDTH;
i4_horz_samp_2 = *pi4_ref_array_temp;
/* populate 2 samples based on current coeffs */
*pi2_out =
((i4_horz_samp_1 << 1) + (i4_horz_samp_1) + (i4_horz_samp_2) + 8) >> 4;
pi2_out += i4_out_res_stride;
*pi2_out =
((i4_horz_samp_2 << 1) + (i4_horz_samp_2) + (i4_horz_samp_1) + 8) >> 4;
pi2_out += i4_out_res_stride;
}
/* populate the last inter sample */
*pi2_out = (i4_horz_samp_2 + 2) >> 2;
/* horizontal loop updates */
pi4_ref_array++;
pi2_out_res++;
}
}
else
{
pi2_out_res += BLOCK_WIDTH;
}
/* Block level loop updates */
if(1 == i4_blk_ctr)
{
i4_start_bit_pos = 0;
pu1_inp_data -= SUB_BLOCK_WIDTH;
pu1_inp_data += (i4_inp_data_stride * SUB_BLOCK_HEIGHT);
pi2_out_res -= MB_WIDTH;
pi2_out_res += (i4_out_res_stride * BLOCK_HEIGHT);
pu1_inp_bitmap += (i4_inp_bitmap_stride * SUB_BLOCK_HEIGHT);
i4_ref_nnz >>= 2;
}
else
{
pu1_inp_data += SUB_BLOCK_WIDTH;
i4_start_bit_pos = SUB_BLOCK_WIDTH;
}
i4_ref_nnz >>= 1;
} /* end of loop over all the blocks */
}
return;
}
/*****************************************************************************/
/* */
/* Function Name : svcd_residual_samp_mb_dyadic */
/* */
/* Description : MB level function whcih perform the residual resampling */
/* of data of an MB (luma and chroma insclusive) */
/* for Dyadic cases */
/* Inputs : pv_residual_samp_ctxt : residual sampling context */
/* ps_ref_luma : reference layer luma data buffer desc */
/* ps_ref_chroma : reference layer chroma data buffer desc */
/* ps_ref_luma_bitmap : ref layer luma bit map buffer desc */
/* ps_ref_chroma_bitmap : ref layer chroma bit map buff des */
/* ps_ref_mb_mode : ref layer mb mode map buff desc */
/* ps_out_luma : current layer out luma buffer desc */
/* ps_out_chroma : current layer out chroma buffer desc */
/* x,y : current mb coorinate */
/* Globals : none */
/* Processing : it calls the reference layer construction followed by */
/* interplaotion 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) */
/* 26 06 2009 vijayakumar creation */
/* */
/*****************************************************************************/
void svcd_residual_samp_mb_dyadic(void *pv_residual_samp_ctxt, mem_element_t *ps_ref_luma,
mem_element_t *ps_ref_chroma, mem_element_t *ps_ref_luma_bitmap,
mem_element_t *ps_ref_chroma_bitmap,
mem_element_t *ps_ref_mb_mode, mem_element_t *ps_out_luma,
mem_element_t *ps_out_chroma, UWORD16 u2_mb_x, UWORD16 u2_mb_y)
{
residual_sampling_ctxt_t *ps_ctxt;
res_lyr_ctxt *ps_lyr_ctxt;
/* --------------------------------------------------------------------- */
/* I/O buffer params */
/* --------------------------------------------------------------------- */
UWORD8 *pu1_inp;
UWORD8 *pu1_inp_bitmap;
WORD16 *pi2_out;
WORD32 i4_inp_stride;
WORD32 i4_inp_bitmap_stride;
WORD32 i4_out_stride;
WORD32 i4_bit_pos = 0;
WORD32 i4_luma_nnz;
WORD32 i4_chroma_nnz;
WORD32 i4_tx_size;
ps_ctxt = (residual_sampling_ctxt_t *) pv_residual_samp_ctxt;
ps_lyr_ctxt = &ps_ctxt->as_res_lyrs[ps_ctxt->i4_res_lyr_id];
/* --------------------------------------------------------------------- */
/* LUMA PROCESSING */
/* --------------------------------------------------------------------- */
pu1_inp = (UWORD8 *) ps_ref_luma->pv_buffer;
pu1_inp_bitmap = (UWORD8 *) ps_ref_luma_bitmap->pv_buffer;
pi2_out = (WORD16 *) ps_out_luma->pv_buffer;
i4_inp_stride = ps_ref_luma->i4_num_element_stride;
i4_inp_bitmap_stride = ps_ref_luma_bitmap->i4_num_element_stride;
i4_out_stride = ps_out_luma->i4_num_element_stride;
/* set the output buffer to 0 since not all block will be upsampled */
svcd_2d_memset(pi2_out, (MB_WIDTH << 1), MB_HEIGHT, (i4_out_stride << 1), 0);
{
WORD32 i4_offset_x, i4_offset_y;
residual_samp_map_ctxt_t *ps_luma_map;
ref_mb_map_t *ps_x_off_len_luma;
ref_mb_map_t *ps_y_off_len_luma;
ps_luma_map = &ps_lyr_ctxt->s_luma_map_ctxt;
ps_x_off_len_luma = ps_luma_map->ps_x_offset_length;
ps_y_off_len_luma = ps_luma_map->ps_y_offset_length;
/* get the actual offset for the buffers */
i4_offset_x = ps_x_off_len_luma[u2_mb_x].i2_offset;
i4_offset_y = ps_y_off_len_luma[u2_mb_y].i2_offset;
{
inter_lyr_mb_prms_t *ps_inter_lyr_mb_prms;
WORD32 i4_mb_x, i4_mb_y;
UWORD16 u2_luma_mask = 0x0033;
UWORD8 u1_chrm_mask = 0x11;
WORD32 i4_luma_rt_sft_amt = 0;
WORD32 i4_chrm_rt_sft_amt = 0;
i4_mb_x = ((i4_offset_x + 1) >> MB_WIDTH_SHIFT);
i4_mb_y = ((i4_offset_y + 1) >> MB_HEIGHT_SHIFT);
/* get the location of the byte which has the current mb mode */
ps_inter_lyr_mb_prms = (inter_lyr_mb_prms_t *) ps_ref_mb_mode->pv_buffer;
ps_inter_lyr_mb_prms += i4_mb_x;
ps_inter_lyr_mb_prms += i4_mb_y * ps_ref_mb_mode->i4_num_element_stride;
/* get the approp block in base layer in horz direction */
if(0 != ((i4_offset_x + 1) & 15))
{
u2_luma_mask <<= 2;
i4_luma_rt_sft_amt += 2;
u1_chrm_mask <<= 1;
i4_chrm_rt_sft_amt += 1;
}
/* get the approp block in base layer in vert direction */
if(0 != ((i4_offset_y + 1) & 15))
{
u2_luma_mask <<= 8;
i4_luma_rt_sft_amt += 8;
u1_chrm_mask <<= 2;
i4_chrm_rt_sft_amt += 2;
}
/* extract the nnz and store it */
i4_luma_nnz = (ps_inter_lyr_mb_prms->u2_luma_nnz & u2_luma_mask) >> i4_luma_rt_sft_amt;
i4_chroma_nnz =
(ps_inter_lyr_mb_prms->u1_chroma_nnz & u1_chrm_mask) >> i4_chrm_rt_sft_amt;
i4_tx_size = GET_BIT(ps_inter_lyr_mb_prms->i1_mb_mode, 1);
}
/* since in dyadic case the window width and height will be 10x10 */
/* and the window start offsets will be always 1 column left and */
/* 1 row above the block boundary. so the pointer and the required */
/* positions are appropriately modified */
if(i4_offset_x >= 0)
{
pu1_inp++;
pu1_inp_bitmap++;
}
if(i4_offset_y >= 0)
{
pu1_inp += i4_inp_stride;
pu1_inp_bitmap += i4_inp_bitmap_stride;
}
svcd_residual_luma_dyadic(pv_residual_samp_ctxt, pu1_inp, i4_inp_stride, pi2_out,
i4_out_stride, pu1_inp_bitmap, i4_inp_bitmap_stride,
ps_ref_mb_mode, u2_mb_x, u2_mb_y, i4_luma_nnz, i4_tx_size);
}
/* --------------------------------------------------------------------- */
/* CHROMA PROCESSING */
/* --------------------------------------------------------------------- */
/* CB */
pu1_inp = (UWORD8 *) ps_ref_chroma->pv_buffer;
pu1_inp_bitmap = (UWORD8 *) ps_ref_chroma_bitmap->pv_buffer;
pi2_out = (WORD16 *) ps_out_chroma->pv_buffer;
i4_inp_stride = ps_ref_chroma->i4_num_element_stride << 1;
i4_inp_bitmap_stride = ps_ref_chroma_bitmap->i4_num_element_stride << 1;
i4_out_stride = ps_out_chroma->i4_num_element_stride << 1;
/* set the output buffer to 0 since not all block will be upsampled */
svcd_2d_memset(pi2_out, (BLOCK_WIDTH << 1), MB_HEIGHT, (i4_out_stride), 0);
/* choose the appropriate chroma processing routine */
if(SVCD_FALSE == ps_lyr_ctxt->i4_chrm_alt_proc)
{
WORD32 i4_offset_x, i4_offset_y;
residual_samp_map_ctxt_t *ps_chroma_map;
ref_mb_map_t *ps_x_off_len_chroma;
ref_mb_map_t *ps_y_off_len_chroma;
ps_chroma_map = &ps_lyr_ctxt->s_chroma_map_ctxt;
ps_x_off_len_chroma = ps_chroma_map->ps_x_offset_length;
ps_y_off_len_chroma = ps_chroma_map->ps_y_offset_length;
/* get the actual offset for the buffers */
i4_offset_x = ps_x_off_len_chroma[u2_mb_x].i2_offset;
i4_offset_y = ps_y_off_len_chroma[u2_mb_y].i2_offset;
/* since in dyadic case the window width and height will be 6x6 */
/* and the window start offsets will be always 1 column left and */
/* 1 row above the block boundary. so the pointer and the required */
/* positions are appropriately modified */
if(i4_offset_x >= 0)
{
pu1_inp++;
if(0 == ((i4_offset_x + 1) & 7))
{
pu1_inp_bitmap++;
}
else
{
i4_bit_pos = 4;
}
}
if(i4_offset_y >= 0)
{
pu1_inp += i4_inp_stride;
pu1_inp_bitmap += i4_inp_bitmap_stride;
}
if(0 != (i4_chroma_nnz & 0x01))
{
svcd_residual_chroma_dyadic(pv_residual_samp_ctxt, pu1_inp, i4_inp_stride, pi2_out,
i4_out_stride, pu1_inp_bitmap, i4_inp_bitmap_stride,
i4_bit_pos);
}
}
else
{
svcd_residual_chroma_dyadic_alt(pv_residual_samp_ctxt, u2_mb_x, u2_mb_y, ps_ref_mb_mode,
pu1_inp, i4_inp_stride, pi2_out, i4_out_stride,
pu1_inp_bitmap, i4_inp_bitmap_stride, SVCD_FALSE);
}
/* CR */
pu1_inp += (i4_inp_stride >> 1);
pu1_inp_bitmap += (i4_inp_bitmap_stride >> 1);
pi2_out += (i4_out_stride >> 1);
if(SVCD_FALSE == ps_lyr_ctxt->i4_chrm_alt_proc)
{
if(0 != (i4_chroma_nnz & 0x10))
{
svcd_residual_chroma_dyadic(pv_residual_samp_ctxt, pu1_inp, i4_inp_stride, pi2_out,
i4_out_stride, pu1_inp_bitmap, i4_inp_bitmap_stride,
i4_bit_pos);
}
}
else
{
svcd_residual_chroma_dyadic_alt(pv_residual_samp_ctxt, u2_mb_x, u2_mb_y, ps_ref_mb_mode,
pu1_inp, i4_inp_stride, pi2_out, i4_out_stride,
pu1_inp_bitmap, i4_inp_bitmap_stride, SVCD_TRUE);
}
return;
}
/*****************************************************************************/
/* */
/* Function Name : svc_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 svc_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;
}
/* Updations */
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;
}
}
/*****************************************************************************/
/* */
/* Function Name : svcd_intra_samp_populate_list */
/* */
/* Description : This is a seq or frame level init function which fills */
/* all offsets, projected locations arrays based on */
/* the two resolutions and cropping parameters */
/* Inputs : refer ot doxygen comments below */
/* Globals : none */
/* Processing : it projects the locations and computes the values */
/* */
/* Outputs : none */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 26 06 2009 vijayakumar creation */
/* */
/*****************************************************************************/
void svcd_intra_samp_populate_list(intra_samp_map_ctxt_t *ps_map_ctxt, res_prms_t *ps_curr_res_prms,
res_prms_t *ps_ref_res_prms, WORD32 i4_chroma_flag,
dec_struct_t *ps_dec)
{
/* --------------------------------------------------------------------- */
/* Local variables required for finding the mapping between the layers */
/* --------------------------------------------------------------------- */
WORD32 i4_shift_x, i4_shift_y, i4_scale_x, i4_scale_y, i4_offset_x, i4_offset_y;
WORD32 i4_add_x, i4_add_y, i4_delta_x, i4_delta_y, i4_refphase_x, i4_refphase_y;
WORD32 i4_phase_x, i4_phase_y, i4_sub_wd, i4_sub_ht, i4_mb_wd, i4_mb_ht;
WORD32 i4_horz_dim, i4_vert_dim, i4_tmp;
/* --------------------------------------------------------------------- */
/* Local Pointer Declaration for arrays in Mapping context */
/* --------------------------------------------------------------------- */
ref_mb_map_t *ps_x_off_len, *ps_y_off_len;
WORD32 i4_ref_wd, i4_ref_ht, i4_scaled_wd, i4_scaled_ht, i4_curr_lyr_width, i4_curr_lyr_height;
/* --------------------------------------------------------------------- */
/* Local Flag Declaration */
/* --------------------------------------------------------------------- */
WORD32 i4_ref_layer_field_pic_flag, i4_field_pic_flag, i4_frame_mbs_only_flag;
WORD32 i4_ref_layer_frame_Mbs_only_flag, i4_field_Mb_flag, i4_bot_field_flag;
/* --------------------------------------------------------------------- */
/* Cropping Parameters Declaration */
/* --------------------------------------------------------------------- */
WORD32 i4_scaled_ref_layer_left_offset, i4_scaled_ref_layer_top_offset;
WORD32 i4_scaled_ref_layer_right_offset, i4_scaled_ref_layer_bottom_offset;
dec_seq_params_t *ps_sps;
ps_sps = ps_dec->ps_cur_sps;
/* --------------------------------------------------------------------- */
/* Hardcoding flag information (assuming no field support) */
/* --------------------------------------------------------------------- */
i4_ref_layer_field_pic_flag = SVCD_FALSE;
i4_field_pic_flag = SVCD_FALSE;
i4_frame_mbs_only_flag = SVCD_TRUE;
i4_field_Mb_flag = SVCD_FALSE;
i4_bot_field_flag = SVCD_FALSE;
i4_ref_layer_frame_Mbs_only_flag = SVCD_TRUE;
i4_horz_dim = 0;
i4_vert_dim = 0;
/* --------------------------------------------------------------------- */
/* Pointer and Paramater are intialized - Chroma and Luma */
/* --------------------------------------------------------------------- */
{
WORD32 i4_base_width;
WORD32 i4_base_height;
WORD32 i4_ref_layer_chroma_phase_x_plus1_flag;
WORD32 i4_ref_layer_chroma_phase_y_plus1;
WORD32 i4_chroma_phase_x_plus1_flag;
WORD32 i4_chroma_phase_y_plus1;
/* ------------------------------------------------------------- */
/* HARD CODED FOR 420 */
/* ------------------------------------------------------------- */
WORD32 i4_sub_wd_chroma = 2;
WORD32 i4_sub_ht_chroma = 2;
i4_base_width = ps_ref_res_prms->i4_res_width;
i4_base_height = ps_ref_res_prms->i4_res_height;
i4_ref_layer_chroma_phase_x_plus1_flag =
ps_curr_res_prms->i1_ref_lyr_chroma_phase_x_plus1_flag;
i4_ref_layer_chroma_phase_y_plus1 = ps_curr_res_prms->i1_ref_lyr_chroma_phase_y_plus1;
i4_chroma_phase_x_plus1_flag = ps_sps->s_sps_svc_ext.u1_chroma_phase_x_plus1_flag;
i4_chroma_phase_y_plus1 = ps_sps->s_sps_svc_ext.u1_chroma_phase_y_plus1;
i4_scaled_ref_layer_bottom_offset = ps_curr_res_prms->s_ref_lyr_scaled_offset.i2_bot;
i4_scaled_ref_layer_left_offset = ps_curr_res_prms->s_ref_lyr_scaled_offset.i2_left;
i4_scaled_ref_layer_top_offset = ps_curr_res_prms->s_ref_lyr_scaled_offset.i2_top;
i4_scaled_ref_layer_right_offset = ps_curr_res_prms->s_ref_lyr_scaled_offset.i2_rt;
/* ----------------------------------------------------------------- */
/* Computing Effective Frame Dimensions */
/* ------------------------------------------------------------------*/
i4_ref_wd = (i4_base_width >> i4_chroma_flag);
i4_ref_ht = (i4_base_height >> i4_chroma_flag) * (1 + i4_ref_layer_field_pic_flag);
i4_scaled_wd = ps_curr_res_prms->u2_scaled_ref_width;
i4_scaled_ht = ps_curr_res_prms->u2_scaled_ref_height;
i4_scaled_wd = (i4_scaled_wd >> i4_chroma_flag);
i4_scaled_ht = (i4_scaled_ht >> i4_chroma_flag) * (1 + i4_field_pic_flag);
if(1 == i4_chroma_flag)
{
i4_refphase_x = i4_ref_layer_chroma_phase_x_plus1_flag - 1;
i4_refphase_y = i4_ref_layer_chroma_phase_y_plus1 - 1;
i4_phase_x = i4_chroma_phase_x_plus1_flag - 1;
i4_phase_y = i4_chroma_phase_y_plus1 - 1;
i4_sub_wd = i4_sub_wd_chroma;
i4_sub_ht = i4_sub_ht_chroma;
i4_mb_wd = MB_WIDTH >> 1;
i4_mb_ht = MB_HEIGHT >> 1;
}
else
{
i4_refphase_x = 0;
i4_refphase_y = 0;
i4_phase_x = 0;
i4_phase_y = 0;
i4_sub_wd = 1;
i4_sub_ht = 1;
i4_mb_wd = MB_WIDTH;
i4_mb_ht = MB_HEIGHT;
}
}
/* --------------------------------------------------------------------- */
/* Derive shift x and y based on level idd */
/* --------------------------------------------------------------------- */
if(ps_sps->u1_level_idc <= 30)
{
i4_shift_x = 16;
i4_shift_y = 16;
}
else
{
i4_shift_x = 31 - svcd_get_ceil_log2(i4_ref_wd);
i4_shift_y = 31 - svcd_get_ceil_log2(i4_ref_ht);
}
/* --------------------------------------------------------------------- */
/* The following condition is not true in our case for time being */
/* --------------------------------------------------------------------- */
if((SVCD_FALSE == i4_frame_mbs_only_flag) || (SVCD_FALSE == i4_ref_layer_frame_Mbs_only_flag))
{
i4_phase_y = i4_phase_y + 4 * i4_bot_field_flag;
if(1 == i4_ref_layer_frame_Mbs_only_flag)
i4_refphase_y = (2 * i4_refphase_y) + 2;
else
i4_refphase_y = i4_refphase_y + (4 * i4_bot_field_flag);
}
/* --------------------------------------------------------------------- */
/* Dx and Dy Computation - Ratio of the base and enhance layer width */
/* --------------------------------------------------------------------- */
i4_scale_x = ((i4_ref_wd << i4_shift_x) + (i4_scaled_wd >> 1)) / (i4_scaled_wd);
i4_scale_y = ((i4_ref_ht << i4_shift_y) + (i4_scaled_ht >> 1)) / (i4_scaled_ht);
i4_offset_x = i4_scaled_ref_layer_left_offset / i4_sub_wd;
i4_add_x = (((i4_ref_wd * (2 + i4_phase_x)) << (i4_shift_x - 2)) + (i4_scaled_wd >> 1)) /
i4_scaled_wd +
(1 << (i4_shift_x - 5));
i4_delta_x = 4 * (2 + i4_refphase_x);
if((SVCD_TRUE == i4_frame_mbs_only_flag) && (SVCD_TRUE == i4_ref_layer_frame_Mbs_only_flag))
{
i4_offset_y = i4_scaled_ref_layer_top_offset / i4_sub_ht;
i4_add_y = (((i4_ref_ht * (2 + i4_phase_y)) << (i4_shift_y - 2)) + (i4_scaled_ht >> 1)) /
i4_scaled_ht +
(1 << (i4_shift_y - 5));
i4_delta_y = 4 * (2 + i4_refphase_y);
}
else
{
i4_offset_y = i4_scaled_ref_layer_top_offset / (2 * i4_sub_ht);
i4_add_y = (((i4_ref_ht * (2 + i4_phase_y)) << (i4_shift_y - 3)) + (i4_scaled_ht >> 1)) /
i4_scaled_ht +
(1 << (i4_shift_y - 5));
i4_delta_y = 2 * (2 + i4_refphase_y);
}
/* --------------------------------------------------------------------- */
/* Intializing Local Pointers - Chroma and Luma */
/* --------------------------------------------------------------------- */
ps_x_off_len = ps_map_ctxt->ps_x_offset_length;
ps_y_off_len = ps_map_ctxt->ps_y_offset_length;
i4_curr_lyr_width = ps_curr_res_prms->i4_res_width >> i4_chroma_flag;
i4_curr_lyr_height = ps_curr_res_prms->i4_res_height >> i4_chroma_flag;
/* --------------------------------------------------------------------- */
/* Dyadic Scaling Ratios Handling */
/* --------------------------------------------------------------------- */
if(1 == ps_curr_res_prms->u1_dyadic_flag)
{
WORD32 i4_refarray_wd, i4_x_offset;
WORD32 i4_refarray_ht, i4_y_offset;
WORD32 i4_crp_wd_lt, i4_crp_ht_top;
WORD32 i4_crp_wd_rt, i4_crp_ht_bot;
WORD32 i4_ref_lyr_wd, i4_ref_lyr_ht;
WORD32 i4_ref_x, i4_ref_y;
WORD32 i4_ofst;
WORD32 i4_i, i4_j;
/* Hard coded for dyadic case */
i4_refarray_wd = 20 >> i4_chroma_flag;
i4_ofst = -2 >> i4_chroma_flag;
i4_crp_wd_lt = i4_scaled_ref_layer_left_offset >> i4_chroma_flag;
i4_crp_wd_rt = i4_scaled_ref_layer_right_offset >> i4_chroma_flag;
i4_ref_lyr_wd = (i4_curr_lyr_width >> 1);
i4_ref_x = 0;
for(i4_i = 0; i4_i < i4_curr_lyr_width; i4_i += (i4_mb_wd << 1))
{
i4_x_offset = MAX(i4_ofst, (i4_ref_x + i4_ofst));
i4_x_offset = MIN(i4_x_offset, (i4_ref_lyr_wd - i4_ofst));
ps_x_off_len->i2_offset = i4_x_offset;
ps_x_off_len->i2_length = i4_refarray_wd;
ps_x_off_len++;
ps_x_off_len->i2_offset = i4_x_offset;
ps_x_off_len->i2_length = i4_refarray_wd;
ps_x_off_len++;
if(i4_i >= i4_crp_wd_lt)
{
if(i4_i <= (i4_curr_lyr_width - i4_crp_wd_rt))
{
i4_ref_x += i4_mb_wd;
}
}
}
i4_refarray_ht = 20 >> i4_chroma_flag;
i4_crp_ht_top = i4_scaled_ref_layer_top_offset >> i4_chroma_flag;
i4_crp_ht_bot = i4_scaled_ref_layer_bottom_offset >> i4_chroma_flag;
i4_ref_lyr_ht = (i4_curr_lyr_height >> 1);
i4_ref_y = 0;
for(i4_j = 0; i4_j < i4_curr_lyr_height; i4_j += (i4_mb_ht << 1))
{
i4_y_offset = MAX(i4_ofst, (i4_ref_y + i4_ofst));
i4_y_offset = MIN(i4_y_offset, (i4_ref_lyr_ht - i4_ofst));
ps_y_off_len->i2_offset = i4_y_offset;
ps_y_off_len->i2_length = i4_refarray_ht;
ps_y_off_len++;
ps_y_off_len->i2_offset = i4_y_offset;
ps_y_off_len->i2_length = i4_refarray_ht;
ps_y_off_len++;
if(i4_j >= i4_crp_ht_top)
{
if(i4_j <= (i4_curr_lyr_height - i4_crp_ht_bot))
{
i4_ref_y += i4_mb_ht;
}
}
}
/* No need to process further, return */
return;
} /* If dyadic path */
/* Proposed Algo for Optimization */
{
WORD32 i4_max, i4_min;
ref_min_max_map_t *ps_x_min_max;
ref_min_max_map_t *ps_y_min_max;
WORD32 i4_i, i4_j;
ps_x_min_max = ps_map_ctxt->ps_x_min_max;
ps_y_min_max = ps_map_ctxt->ps_y_min_max;
/* ----------------------------------------------------------------- */
/* Computation of offsetX refArrayW Xmin and Xmax Lists */
/* ----------------------------------------------------------------- */
for(i4_i = 0; i4_i < i4_curr_lyr_width; i4_i = i4_i + i4_mb_wd)
{
WORD32 i4_refarray_wd, i4_xr_index;
WORD32 i4_x_refmin16;
WORD32 i4_x_refmax16;
WORD32 i4_x_offset;
i4_x_refmin16 = (WORD64) (((WORD64) (i4_i - i4_offset_x) * i4_scale_x + i4_add_x) >>
(i4_shift_x - 4)) -
i4_delta_x;
i4_x_refmax16 =
(WORD64) (((WORD64) (i4_i + i4_mb_wd - 1 - i4_offset_x) * i4_scale_x + i4_add_x) >>
(i4_shift_x - 4)) -
i4_delta_x;
/* ------------------------------------------------------------- */
/* Modified AC205 */
/* Minimum width required - So adding 2 pixels on each side */
/* ------------------------------------------------------------- */
i4_refarray_wd = ((i4_x_refmax16 + 15) >> 4) - (i4_x_refmin16 >> 4) + 1 + 4;
/* ------------------------------------------------------------- */
/* Setting the offset 2 pixels before */
/* ------------------------------------------------------------- */
i4_x_offset = (i4_x_refmin16 >> 4) - 2;
/* ------------------------------------------------------------- */
/* Modifying the values based on the location */
/* ------------------------------------------------------------- */
i4_min = i4_x_offset;
i4_xr_index = i4_min - ((i4_min / i4_mb_wd) * i4_mb_wd);
if(i4_xr_index < (i4_mb_wd >> 1))
{
i4_refarray_wd = i4_refarray_wd + (i4_mb_wd >> 1);
i4_x_offset = i4_x_offset - (i4_mb_wd >> 1);
}
i4_max = ((i4_x_refmax16 + 15) >> 4) + 2;
i4_xr_index = i4_max - ((i4_max / i4_mb_wd) * i4_mb_wd);
if(i4_xr_index >= (i4_mb_wd >> 1)) i4_refarray_wd = i4_refarray_wd + (i4_mb_wd >> 1);
/* ------------------------------------------------------------- */
/* Filling the arrays with offset, min, max and refArray dim */
/* ------------------------------------------------------------- */
ps_x_off_len->i2_offset = i4_x_offset;
ps_x_off_len->i2_length = i4_refarray_wd;
ps_x_min_max->i2_min_pos = (i4_x_refmin16 >> 4) - i4_x_offset;
ps_x_min_max->i2_max_pos = ((i4_x_refmax16 + 15) >> 4) - i4_x_offset;
i4_tmp = (WORD32) (ps_x_min_max->i2_max_pos - ps_x_min_max->i2_min_pos) +
(4 >> i4_chroma_flag);
if(i4_tmp > i4_horz_dim)
{
i4_horz_dim = i4_tmp;
}
/* increment the pointer */
ps_x_off_len++;
ps_x_min_max++;
} /* end of loop over scaled width */
/* ----------------------------------------------------------------- */
/* Computation of offsetY refArrayH Ymin and Ymax Lists */
/* ----------------------------------------------------------------- */
for(i4_j = 0; i4_j < i4_curr_lyr_height; i4_j = i4_j + i4_mb_ht)
{
WORD32 i4_refarray_ht, i4_yr_index;
WORD32 i4_y_refmin16;
WORD32 i4_y_refmax16;
WORD32 i4_y_offset;
i4_y_refmin16 = (WORD64) (((WORD64) (i4_j - i4_offset_y) * i4_scale_y + i4_add_y) >>
(i4_shift_y - 4)) -
i4_delta_y;
i4_y_refmax16 =
(WORD64) (((WORD64) (i4_j + i4_mb_ht - 1 - i4_offset_y) * i4_scale_y + i4_add_y) >>
(i4_shift_y - 4)) -
i4_delta_y;
/* ------------------------------------------------------------- */
/* Modified AC205 */
/* Minimum width required - So adding 2 pixels on each side */
/* ------------------------------------------------------------- */
i4_refarray_ht = ((i4_y_refmax16 + 15) >> 4) - (i4_y_refmin16 >> 4) + 1 + 4;
/* ------------------------------------------------------------- */
/* Setting the offset 2 pixels before */
/* ------------------------------------------------------------- */
i4_y_offset = (i4_y_refmin16 >> 4) - 2;
/* ------------------------------------------------------------- */
/* Modifying the values based on the location */
/* ------------------------------------------------------------- */
i4_min = i4_y_offset;
i4_yr_index = i4_min - ((i4_min / i4_mb_ht) * i4_mb_ht);
if(i4_yr_index < (i4_mb_ht >> 1))
{
i4_refarray_ht = i4_refarray_ht + (i4_mb_ht >> 1);
i4_y_offset = i4_y_offset - (i4_mb_ht >> 1);
}
i4_max = ((i4_y_refmax16 + 15) >> 4) + 2;
i4_yr_index = i4_max - ((i4_max / i4_mb_ht) * i4_mb_ht);
if(i4_yr_index >= (i4_mb_ht >> 1)) i4_refarray_ht = i4_refarray_ht + (i4_mb_ht >> 1);
/* ------------------------------------------------------------- */
/* Filling the arrays with offset, min, max and refArray dim */
/* ------------------------------------------------------------- */
ps_y_off_len->i2_offset = i4_y_offset;
ps_y_off_len->i2_length = i4_refarray_ht;
ps_y_min_max->i2_min_pos = (i4_y_refmin16 >> 4) - i4_y_offset;
ps_y_min_max->i2_max_pos = ((i4_y_refmax16 + 15) >> 4) - i4_y_offset;
i4_tmp = (WORD32) (ps_y_min_max->i2_max_pos - ps_y_min_max->i2_min_pos) +
(4 >> i4_chroma_flag);
if(i4_tmp > i4_vert_dim)
{
i4_vert_dim = i4_tmp;
}
/* increment the pointer */
ps_y_off_len++;
ps_y_min_max++;
} /* end of loop over scaled height */
}
/* --------------------------------------------------------------------- */
/* Computation of Xref and Xphase List as per standard */
/* --------------------------------------------------------------------- */
ps_x_off_len = ps_map_ctxt->ps_x_offset_length;
ps_y_off_len = ps_map_ctxt->ps_y_offset_length;
{
ref_pixel_map_t *ps_x_pos_phase;
WORD32 i4_xc;
WORD32 i4_offset_x_index;
ps_x_pos_phase = ps_map_ctxt->ps_x_pos_phase;
for(i4_xc = 0; i4_xc < i4_curr_lyr_width; i4_xc++)
{
WORD32 i4_x_offset;
WORD32 i4_x_ref16;
i4_offset_x_index = i4_xc / i4_mb_wd;
i4_x_offset = ps_x_off_len[i4_offset_x_index].i2_offset;
i4_x_ref16 = (WORD64) (((WORD64) (i4_xc - i4_offset_x) * i4_scale_x + i4_add_x) >>
(i4_shift_x - 4)) -
i4_delta_x;
/* store the values */
ps_x_pos_phase->i2_ref_pos = (i4_x_ref16 >> 4) - i4_x_offset;
ps_x_pos_phase->i2_phase = i4_x_ref16 & 15;
/* increment the pointer */
ps_x_pos_phase++;
} /* end of loop over scaled width */
}
/* --------------------------------------------------------------------- */
/* Computation of Yref and Yphase List as per standard */
/* --------------------------------------------------------------------- */
{
WORD32 i4_yc;
ref_pixel_map_t *ps_y_pos_phase;
ps_y_pos_phase = ps_map_ctxt->ps_y_pos_phase;
for(i4_yc = 0; i4_yc < i4_curr_lyr_height; i4_yc++)
{
WORD32 i4_y_offset;
WORD32 i4_y_ref16;
WORD32 i4_offset_y_index;
i4_offset_y_index = i4_yc / i4_mb_ht;
i4_y_offset = ps_y_off_len[i4_offset_y_index].i2_offset;
if((SVCD_FALSE == i4_frame_mbs_only_flag) ||
(SVCD_FALSE == i4_ref_layer_frame_Mbs_only_flag))
{
i4_yc = i4_yc >> (1 - i4_field_Mb_flag);
}
i4_y_ref16 = (WORD64) (((WORD64) (i4_yc - i4_offset_y) * i4_scale_y + i4_add_y) >>
(i4_shift_y - 4)) -
i4_delta_y;
ps_y_pos_phase->i2_ref_pos = (i4_y_ref16 >> 4) - i4_y_offset;
ps_y_pos_phase->i2_phase = i4_y_ref16 & 15;
/* increment the pointer */
ps_y_pos_phase++;
} /* end of loop over scaled height */
}
/* --------------------------------------------------------------------- */
/* Computation of Corresponding Diagonal Location */
/* --------------------------------------------------------------------- */
{
WORD16 *pi2_xd_index;
WORD16 *pi2_yd_index;
WORD16 *pi2_ya_index;
WORD32 i4_i, i4_j;
pi2_xd_index = ps_map_ctxt->pi2_xd_index;
pi2_yd_index = ps_map_ctxt->pi2_yd_index;
pi2_ya_index = ps_map_ctxt->pi2_ya_index;
for(i4_i = 0; i4_i < i4_mb_wd; i4_i++)
{
*(pi2_xd_index + i4_i) = ((i4_i >= i4_mb_wd >> 1) ? (i4_i - i4_mb_wd) : (i4_i + 1));
} /* end of loop over MB width */
for(i4_j = 0; i4_j < i4_mb_ht; i4_j++)
{
*(pi2_yd_index + i4_j) = ((i4_j >= i4_mb_ht >> 1) ? (i4_j - i4_mb_ht) : (i4_j + 1));
*(pi2_ya_index + i4_j) =
*(pi2_yd_index + i4_j) - ((i4_mb_ht >> 1 + 1) * (SIGN(*(pi2_yd_index + i4_j))));
} /* end of loop over MB height */
}
/* generate the lookup to generate horizontal segments */
svc_intra_resamp_generate_segment_lookup(ps_map_ctxt->ps_seg_lookup_horz, i4_horz_dim, i4_mb_wd,
3);
/* generate the lookup to generate vertical segments */
svc_intra_resamp_generate_segment_lookup(ps_map_ctxt->ps_seg_lookup_vert, i4_vert_dim, i4_mb_ht,
4);
return;
} /* end of function "svcd_intra_samp_populate_list"*/
void svcd_intra_samp_populate_res_prms(void *pv_dec)
{
dec_struct_t *ps_dec = (dec_struct_t *) pv_dec;
res_prms_t *ps_curr_lyr_res_prms;
ps_curr_lyr_res_prms = &ps_dec->s_res_prms;
ps_curr_lyr_res_prms->i4_res_width = ps_dec->u2_pic_wd;
ps_curr_lyr_res_prms->i4_res_height = ps_dec->u2_pic_ht;
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_left =
ps_dec->ps_cur_sps->s_sps_svc_ext.i4_seq_scaled_ref_layer_left_offset << 1;
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_top =
ps_dec->ps_cur_sps->s_sps_svc_ext.i4_seq_scaled_ref_layer_top_offset << 1;
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_rt =
ps_dec->ps_cur_sps->s_sps_svc_ext.i4_seq_scaled_ref_layer_right_offset << 1;
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_bot =
ps_dec->ps_cur_sps->s_sps_svc_ext.i4_seq_scaled_ref_layer_bottom_offset << 1;
ps_curr_lyr_res_prms->u2_scaled_ref_width =
(ps_dec->u2_frm_wd_in_mbs << 4) - (ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_left +
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_rt);
ps_curr_lyr_res_prms->u2_scaled_ref_height =
(ps_dec->u2_frm_ht_in_mbs << 4) - (ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_top +
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_bot);
ps_curr_lyr_res_prms->u1_cropping_change_flag = 0;
if(2 == ps_dec->ps_cur_sps->s_sps_svc_ext.u1_extended_spatial_scalability_idc)
{
ps_curr_lyr_res_prms->u1_cropping_change_flag = 1;
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_left =
ps_dec->ps_cur_slice->s_svc_slice_params.i4_scaled_ref_layer_left_offset << 1;
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_top =
ps_dec->ps_cur_slice->s_svc_slice_params.i4_scaled_ref_layer_top_offset << 1;
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_rt =
ps_dec->ps_cur_slice->s_svc_slice_params.i4_scaled_ref_layer_right_offset << 1;
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_bot =
ps_dec->ps_cur_slice->s_svc_slice_params.i4_scaled_ref_layer_bottom_offset << 1;
ps_curr_lyr_res_prms->u2_scaled_ref_width =
(ps_dec->u2_frm_wd_in_mbs << 4) -
(ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_left +
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_rt);
ps_curr_lyr_res_prms->u2_scaled_ref_height =
(ps_dec->u2_frm_ht_in_mbs << 4) -
(ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_top +
ps_curr_lyr_res_prms->s_ref_lyr_scaled_offset.i2_bot);
}
ps_curr_lyr_res_prms->u1_rstrct_res_change_flag = SVCD_TRUE;
ps_curr_lyr_res_prms->u1_disable_inter_lyr_dblk_filter_idc =
ps_dec->ps_cur_slice->s_svc_slice_params.u4_disable_inter_layer_deblk_filter_idc;
ps_curr_lyr_res_prms->i1_inter_lyr_alpha_c0_offset =
ps_dec->ps_cur_slice->s_svc_slice_params.i4_inter_layer_slice_alpha_c0_offset_div2;
ps_curr_lyr_res_prms->i1_inter_lyr_beta_offset =
ps_dec->ps_cur_slice->s_svc_slice_params.i4_inter_layer_slice_beta_offset_div2;
ps_curr_lyr_res_prms->i1_constrained_intra_rsmpl_flag =
ps_dec->ps_cur_slice->s_svc_slice_params.u1_constrained_intra_resampling_flag;
ps_curr_lyr_res_prms->i1_ref_lyr_chroma_phase_x_plus1_flag =
ps_dec->ps_cur_sps->s_sps_svc_ext.u1_seq_ref_layer_chroma_phase_x_plus1_flag;
ps_curr_lyr_res_prms->i1_ref_lyr_chroma_phase_y_plus1 =
ps_dec->ps_cur_sps->s_sps_svc_ext.u1_seq_ref_layer_chroma_phase_y_plus1;
ps_curr_lyr_res_prms->u1_direct_8x8_inference_flag =
ps_dec->ps_cur_sps->u1_direct_8x8_inference_flag;
ps_curr_lyr_res_prms->u1_remap_req_flag = 1;
ps_curr_lyr_res_prms->u1_dyadic_flag = ps_dec->u1_dyadic_flag;
}
/*****************************************************************************/
/* */
/* Function Name : svcd_intra_samp_res_init */
/* */
/* Description : this function calculates the scale factors and initialise*/
/* the context structure */
/* */
/* Inputs : pv_intra_samp_ctxt: handle to private structure */
/* ps_curr_lyr_res_prms: pointer to current resolution */
/* params */
/* ps_ref_lyr_res_prms : pointer to ref resolution params */
/* Globals : none */
/* Processing : it stores the layer dimensions */
/* */
/* Outputs : none */
/* Returns : none */
/* */
/* Issues : none */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 26 06 2009 vijayakumar creation */
/* */
/*****************************************************************************/
void svcd_intra_samp_res_init(void *pv_intra_samp_ctxt, res_prms_t *ps_curr_lyr_res_prms,
ref_mb_map_t **pps_luma_map_horz, ref_mb_map_t **pps_chroma_map_horz,
ref_mb_map_t **pps_luma_map_vert, ref_mb_map_t **pps_chroma_map_vert,
void *pv_dec)
{
intra_sampling_ctxt_t *ps_ctxt;
intra_samp_lyr_ctxt *ps_lyr_ctxt;
dec_seq_params_t *ps_sps;
dec_struct_t *ps_dec = (dec_struct_t *) pv_dec;
dec_struct_t *ps_dec_ref_layer;
dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
ps_svc_slice_params = &ps_slice->s_svc_slice_params;
ps_sps = ps_dec->ps_cur_sps;
ps_dec_ref_layer = ps_dec->ps_dec_ref_layer;
ps_ctxt = (intra_sampling_ctxt_t *) pv_intra_samp_ctxt;
/* if called for base resolution store default values */
if(SVCD_TRUE == ps_dec->u1_base_res_flag)
{
*pps_luma_map_horz = NULL;
*pps_chroma_map_horz = NULL;
*pps_luma_map_vert = NULL;
*pps_chroma_map_vert = NULL;
ps_ctxt->i4_res_lyr_id = -1;
ps_ctxt->i4_ref_width = ps_dec->u2_pic_wd;
ps_ctxt->i4_ref_height = ps_dec->u2_pic_ht;
/* Note: The stride option is provided for bringing in data at NMB */
/* level. Hence to set a NMB level stride refSample array buffer */
/* have to be increased */
ps_ctxt->i4_refarray_stride = REF_ARRAY_WIDTH;
return;
}
/* derive the current sps */
/* store the res id appropriately */
ps_ctxt->i4_res_lyr_id = ps_dec->u1_layer_id - 1;
/* store the resolution params */
ps_ctxt->ps_res_prms = ps_curr_lyr_res_prms;
/* get the current layer ctxt */
ps_lyr_ctxt = &ps_ctxt->as_res_lyrs[ps_dec->u1_layer_id - 1];
ps_ctxt->i4_res_lyr_id = ps_dec->u1_layer_id - 1;
/* get the width and heights */
ps_lyr_ctxt->i4_curr_width = ps_dec->u2_pic_wd;
ps_lyr_ctxt->i4_curr_height = ps_dec->u2_pic_ht;
ps_lyr_ctxt->i4_ref_width = ps_ctxt->i4_ref_width;
ps_lyr_ctxt->i4_ref_height = ps_ctxt->i4_ref_height;
ps_lyr_ctxt->i1_constrained_intra_rsmpl_flag =
ps_svc_slice_params->u1_constrained_intra_resampling_flag;
/* store the structure pointer containing projected locations */
*pps_luma_map_horz = ps_lyr_ctxt->s_luma_map_ctxt.ps_x_offset_length;
*pps_chroma_map_horz = ps_lyr_ctxt->s_chroma_map_ctxt.ps_x_offset_length;
*pps_luma_map_vert = ps_lyr_ctxt->s_luma_map_ctxt.ps_y_offset_length;
*pps_chroma_map_vert = ps_lyr_ctxt->s_chroma_map_ctxt.ps_y_offset_length;
/* check for recomputation of mapping required */
if(SVCD_TRUE == ps_curr_lyr_res_prms->u1_remap_req_flag)
{
res_prms_t s_ref_res_prms = {0};
WORD32 i4_chroma_x_phase, i4_chroma_y_phase;
WORD32 i4_ref_chroma_x_phase, i4_ref_chroma_y_phase;
WORD32 i4_x_phase_0, i4_x_phase_1;
WORD32 i4_y_phase_0, i4_y_phase_1;
WORD32 i4_vert_flag;
/* store the reference layer resolution width and height */
s_ref_res_prms.i4_res_width = ps_ctxt->i4_ref_width;
s_ref_res_prms.i4_res_height = ps_ctxt->i4_ref_height;
/* call the frame level projections calculation function */
svcd_intra_samp_populate_list(&ps_lyr_ctxt->s_luma_map_ctxt, ps_curr_lyr_res_prms,
&s_ref_res_prms, 0, ps_dec);
svcd_intra_samp_populate_list(&ps_lyr_ctxt->s_chroma_map_ctxt, ps_curr_lyr_res_prms,
&s_ref_res_prms, 1, ps_dec);
/* Compute the chroma xPhase and yPhase values */
if(1 == ps_curr_lyr_res_prms->u1_dyadic_flag)
{
i4_ref_chroma_x_phase = ps_curr_lyr_res_prms->i1_ref_lyr_chroma_phase_x_plus1_flag;
i4_ref_chroma_y_phase = ps_curr_lyr_res_prms->i1_ref_lyr_chroma_phase_y_plus1;
i4_chroma_x_phase = ps_sps->s_sps_svc_ext.u1_chroma_phase_x_plus1_flag;
i4_chroma_y_phase = ps_sps->s_sps_svc_ext.u1_chroma_phase_y_plus1;
i4_x_phase_0 = i4_chroma_x_phase - (i4_ref_chroma_x_phase << 1);
i4_x_phase_1 = (3 + i4_x_phase_0) & 0x7;
i4_x_phase_0 += 7;
i4_x_phase_0 &= 0x7;
i4_y_phase_0 = i4_chroma_y_phase - (i4_ref_chroma_y_phase << 1);
i4_y_phase_1 = (3 + i4_y_phase_0) & 0x7;
i4_y_phase_0 += 7;
i4_y_phase_0 &= 0x7;
ps_lyr_ctxt->i4_x_phase_0 = i4_x_phase_0;
ps_lyr_ctxt->i4_x_phase_1 = i4_x_phase_1;
ps_lyr_ctxt->i4_y_phase_0 = i4_y_phase_0;
ps_lyr_ctxt->i4_y_phase_1 = i4_y_phase_1;
/* Choose the appropriate chroma interpolation functions */
if((0 == i4_ref_chroma_x_phase) && (1 == i4_chroma_x_phase))
{
ps_lyr_ctxt->pf_horz_chroma_interpol = (&svcd_horz_interpol_chroma_dyadic_2);
}
else
{
ps_lyr_ctxt->pf_horz_chroma_interpol = (&svcd_horz_interpol_chroma_dyadic_1);
}
i4_vert_flag = 0;
if(0 == i4_ref_chroma_y_phase)
{
if((1 == i4_chroma_y_phase) || (2 == i4_chroma_y_phase))
{
i4_vert_flag = 1;
}
}
else if((2 == i4_ref_chroma_y_phase) && (0 == i4_chroma_y_phase))
{
i4_vert_flag = 2;
}
if(1 == i4_vert_flag)
{
ps_lyr_ctxt->pf_vert_chroma_interpol = (&svcd_vert_interpol_chroma_dyadic_2);
}
else if(2 == i4_vert_flag)
{
ps_lyr_ctxt->pf_vert_chroma_interpol = (&svcd_vert_interpol_chroma_dyadic_3);
}
else
{
ps_lyr_ctxt->pf_vert_chroma_interpol = (&svcd_vert_interpol_chroma_dyadic_1);
}
}
}
else
{
/* should take false value */
ASSERT(SVCD_FALSE == ps_curr_lyr_res_prms->u1_remap_req_flag);
}
/* Set the border values of ref_mb_modes to 0xFF */
{
inter_lyr_mb_prms_t *ps_tmp_prms, *ps_tmp_prms_2;
inter_lyr_mb_prms_t *ps_ref_mb_prms;
WORD32 i4_stride;
WORD32 i4_ref_ht_in_mbs, i4_ref_wd_in_mbs;
WORD32 i4_i;
/* Derive the reference mb mode map */
ps_ref_mb_prms = ps_dec_ref_layer->ps_inter_lyr_mb_prms_frm_start;
i4_stride =
ps_dec_ref_layer->u2_inter_lyr_mb_prms_stride; // SVC_DEC_REVIEW_INTRA_RESAMPLE;
i4_ref_ht_in_mbs = (ps_lyr_ctxt->i4_ref_height >> 4);
i4_ref_wd_in_mbs = (ps_lyr_ctxt->i4_ref_width >> 4);
/* Set the first border row to 0xFF */
ps_tmp_prms = (ps_ref_mb_prms - 1 - i4_stride);
for(i4_i = 0; i4_i < (i4_ref_wd_in_mbs + 2); i4_i++)
{
ps_tmp_prms->i1_mb_mode = (WORD8) 0xFF;
ps_tmp_prms += 1;
}
/* Set the left and right border pixels of each row to 0 */
ps_tmp_prms = ps_ref_mb_prms - 1;
for(i4_i = 0; i4_i < i4_ref_ht_in_mbs; i4_i++)
{
ps_tmp_prms->i1_mb_mode = (WORD8) 0xFF;
ps_tmp_prms_2 = ps_tmp_prms + (i4_ref_wd_in_mbs + 1);
ps_tmp_prms_2->i1_mb_mode = (WORD8) 0xFF;
ps_tmp_prms += i4_stride;
}
/* Set the last border row to 0xFF */
for(i4_i = 0; i4_i < (i4_ref_wd_in_mbs + 2); i4_i++)
{
ps_tmp_prms->i1_mb_mode = (WORD8) 0xFF;
ps_tmp_prms += 1;
}
}
/* store the current layer width and height to context */
ps_ctxt->i4_ref_width = ps_curr_lyr_res_prms->i4_res_width;
ps_ctxt->i4_ref_height = ps_curr_lyr_res_prms->i4_res_height;
return;
}