/******************************************************************************
*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*****************************************************************************
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
*/
#include <stdio.h>
#include <string.h>
#include "iv_datatypedef.h"
#include "iv.h"
#include "impeg2_buf_mgr.h"
#include "impeg2_disp_mgr.h"
#include "impeg2_defs.h"
#include "impeg2_platform_macros.h"
#include "impeg2_inter_pred.h"
#include "impeg2_idct.h"
#include "impeg2_globals.h"
#include "impeg2_mem_func.h"
#include "impeg2_format_conv.h"
#include "impeg2_macros.h"
#include "ivd.h"
#include "impeg2d.h"
#include "impeg2d_bitstream.h"
#include "impeg2d_structs.h"
#include "impeg2d_vld_tables.h"
#include "impeg2d_vld.h"
#include "impeg2d_pic_proc.h"
#include "impeg2d_debug.h"
#include "impeg2d_mc.h"
#define BLK_SIZE 8
#define LUMA_BLK_SIZE (2 * (BLK_SIZE))
#define CHROMA_BLK_SIZE (BLK_SIZE)
/*******************************************************************************
*
* Function Name : impeg2d_dec_p_mb_params
*
* Description : Decodes the parameters for P
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
WORD32 impeg2d_dec_p_mb_params(dec_state_t *ps_dec)
{
stream_t *ps_stream = &ps_dec->s_bit_stream;
UWORD16 u2_mb_addr_incr;
UWORD16 u2_total_len;
UWORD16 u2_len;
UWORD16 u2_mb_type;
UWORD32 u4_next_word;
const dec_mb_params_t *ps_dec_mb_params;
if(impeg2d_bit_stream_nxt(ps_stream,1) == 1)
{
impeg2d_bit_stream_flush(ps_stream,1);
}
else
{
u2_mb_addr_incr = impeg2d_get_mb_addr_incr(ps_stream);
if(0 == ps_dec->u2_first_mb)
{
/****************************************************************/
/* If the 2nd member of a field picture pair is a P picture and */
/* the first one was an I picture, there cannot be any skipped */
/* MBs in the second field picture */
/****************************************************************/
/*
if((dec->picture_structure != FRAME_PICTURE) &&
(dec->f->FieldFuncCall != 0) &&
(dec->las->u1_last_coded_vop_type == I))
{
core0_err_handler((void *)(VOLParams),
ITTMPEG2_ERR_INVALID_MB_SKIP);
}
*/
/****************************************************************/
/* In MPEG-2, the last MB of the row cannot be skipped and the */
/* MBAddrIncr cannot be such that it will take the current MB */
/* beyond the current row */
/* In MPEG-1, the slice could start and end anywhere and is not */
/* restricted to a row like in MPEG-2. Hence this check should */
/* not be done for MPEG-1 streams. */
/****************************************************************/
if(ps_dec->u2_is_mpeg2 && ((ps_dec->u2_mb_x + u2_mb_addr_incr) > ps_dec->u2_num_horiz_mb) )
{
u2_mb_addr_incr = ps_dec->u2_num_horiz_mb - ps_dec->u2_mb_x;
}
if ((u2_mb_addr_incr - 1) > ps_dec->u2_num_mbs_left)
{
/* If the number of skip MBs are more than the number of MBs
* left, indicate error.
*/
return IV_FAIL;
}
impeg2d_dec_skip_mbs(ps_dec, (UWORD16)(u2_mb_addr_incr - 1));
}
}
u4_next_word = (UWORD16)impeg2d_bit_stream_nxt(ps_stream,16);
/*-----------------------------------------------------------------------*/
/* MB type */
/*-----------------------------------------------------------------------*/
{
u2_mb_type = ps_dec->pu2_mb_type[BITS((UWORD16)u4_next_word,15,10)];
u2_len = BITS(u2_mb_type,15,8);
u2_total_len = u2_len;
u4_next_word = (UWORD16)LSW((UWORD16)u4_next_word << u2_len);
}
/*-----------------------------------------------------------------------*/
/* motion type */
/*-----------------------------------------------------------------------*/
{
if((u2_mb_type & MB_FORW_OR_BACK) && ps_dec->u2_read_motion_type)
{
WORD32 i4_motion_type;
ps_dec->u2_motion_type = BITS((UWORD16)u4_next_word,15,14);
u2_total_len += MB_MOTION_TYPE_LEN;
u4_next_word = (UWORD16)LSW((UWORD16)u4_next_word << MB_MOTION_TYPE_LEN);
i4_motion_type = ps_dec->u2_motion_type;
if((i4_motion_type == 0) ||
(i4_motion_type == 4) ||
(i4_motion_type > 7))
{
//TODO : VANG Check for validity
i4_motion_type = 1;
}
}
}
/*-----------------------------------------------------------------------*/
/* dct type */
/*-----------------------------------------------------------------------*/
{
if((u2_mb_type & MB_CODED) && ps_dec->u2_read_dct_type)
{
ps_dec->u2_field_dct = BIT((UWORD16)u4_next_word,15);
u2_total_len += MB_DCT_TYPE_LEN;
u4_next_word = (UWORD16)LSW((UWORD16)u4_next_word << MB_DCT_TYPE_LEN);
}
}
/*-----------------------------------------------------------------------*/
/* Quant scale code */
/*-----------------------------------------------------------------------*/
if(u2_mb_type & MB_QUANT)
{
UWORD16 u2_quant_scale_code;
u2_quant_scale_code = BITS((UWORD16)u4_next_word,15,11);
ps_dec->u1_quant_scale = (ps_dec->u2_q_scale_type) ?
gau1_impeg2_non_linear_quant_scale[u2_quant_scale_code] : (u2_quant_scale_code << 1);
u2_total_len += MB_QUANT_SCALE_CODE_LEN;
}
impeg2d_bit_stream_flush(ps_stream,u2_total_len);
/*-----------------------------------------------------------------------*/
/* Set the function pointers */
/*-----------------------------------------------------------------------*/
ps_dec->u2_coded_mb = (UWORD16)(u2_mb_type & MB_CODED);
if(u2_mb_type & MB_FORW_OR_BACK)
{
UWORD16 refPic = !(u2_mb_type & MB_MV_FORW);
UWORD16 index = (ps_dec->u2_motion_type);
ps_dec->u2_prev_intra_mb = 0;
ps_dec->e_mb_pred = (e_pred_direction_t)refPic;
ps_dec_mb_params = &ps_dec->ps_func_forw_or_back[index];
ps_dec->s_mb_type = ps_dec_mb_params->s_mb_type;
if(NULL == ps_dec_mb_params->pf_func_mb_params)
return -1;
ps_dec_mb_params->pf_func_mb_params(ps_dec);
}
else if(u2_mb_type & MB_TYPE_INTRA)
{
ps_dec->u2_prev_intra_mb = 1;
impeg2d_dec_intra_mb(ps_dec);
}
else
{
ps_dec->u2_prev_intra_mb = 0;
ps_dec->e_mb_pred = FORW;
ps_dec->u2_motion_type = 0;
impeg2d_dec_0mv_coded_mb(ps_dec);
}
/*-----------------------------------------------------------------------*/
/* decode cbp */
/*-----------------------------------------------------------------------*/
if((u2_mb_type & MB_TYPE_INTRA))
{
ps_dec->u2_cbp = 0x3f;
ps_dec->u2_prev_intra_mb = 1;
}
else
{
ps_dec->u2_prev_intra_mb = 0;
ps_dec->u2_def_dc_pred[Y_LUMA] = 128 << ps_dec->u2_intra_dc_precision;
ps_dec->u2_def_dc_pred[U_CHROMA] = 128 << ps_dec->u2_intra_dc_precision;
ps_dec->u2_def_dc_pred[V_CHROMA] = 128 << ps_dec->u2_intra_dc_precision;
if((ps_dec->u2_coded_mb))
{
UWORD16 cbpValue;
cbpValue = gau2_impeg2d_cbp_code[impeg2d_bit_stream_nxt(ps_stream,MB_CBP_LEN)];
ps_dec->u2_cbp = cbpValue & 0xFF;
impeg2d_bit_stream_flush(ps_stream,(cbpValue >> 8) & 0x0FF);
}
else
{
ps_dec->u2_cbp = 0;
}
}
return 0;
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_pnb_mb_params
*
* Description : Decodes the parameters for P and B pictures
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
WORD32 impeg2d_dec_pnb_mb_params(dec_state_t *ps_dec)
{
stream_t *ps_stream = &ps_dec->s_bit_stream;
UWORD16 u2_mb_addr_incr;
UWORD16 u2_total_len;
UWORD16 u2_len;
UWORD16 u2_mb_type;
UWORD32 u4_next_word;
const dec_mb_params_t *ps_dec_mb_params;
if(impeg2d_bit_stream_nxt(ps_stream,1) == 1)
{
impeg2d_bit_stream_flush(ps_stream,1);
}
else
{
u2_mb_addr_incr = impeg2d_get_mb_addr_incr(ps_stream);
if(ps_dec->u2_first_mb)
{
/****************************************************************/
/* Section 6.3.17 */
/* The first MB of a slice cannot be skipped */
/* But the mb_addr_incr can be > 1, because at the beginning of */
/* a slice, it indicates the offset from the last MB in the */
/* previous row. Hence for the first slice in a row, the */
/* mb_addr_incr needs to be 1. */
/****************************************************************/
/* MB_x is set to zero whenever MB_y changes. */
ps_dec->u2_mb_x = u2_mb_addr_incr - 1;
/* For error resilience */
ps_dec->u2_mb_x = MIN(ps_dec->u2_mb_x, (ps_dec->u2_num_horiz_mb - 1));
/****************************************************************/
/* mb_addr_incr is forced to 1 because in this decoder it is used */
/* more as an indicator of the number of MBs skipped than the */
/* as defined by the standard (Section 6.3.17) */
/****************************************************************/
u2_mb_addr_incr = 1;
ps_dec->u2_first_mb = 0;
}
else
{
/****************************************************************/
/* In MPEG-2, the last MB of the row cannot be skipped and the */
/* mb_addr_incr cannot be such that it will take the current MB */
/* beyond the current row */
/* In MPEG-1, the slice could start and end anywhere and is not */
/* restricted to a row like in MPEG-2. Hence this check should */
/* not be done for MPEG-1 streams. */
/****************************************************************/
if(ps_dec->u2_is_mpeg2 &&
((ps_dec->u2_mb_x + u2_mb_addr_incr) > ps_dec->u2_num_horiz_mb))
{
u2_mb_addr_incr = ps_dec->u2_num_horiz_mb - ps_dec->u2_mb_x;
}
if ((u2_mb_addr_incr - 1) > ps_dec->u2_num_mbs_left)
{
/* If the number of skip MBs are more than the number of MBs
* left, indicate error.
*/
return IV_FAIL;
}
impeg2d_dec_skip_mbs(ps_dec, (UWORD16)(u2_mb_addr_incr - 1));
}
}
u4_next_word = (UWORD16)impeg2d_bit_stream_nxt(ps_stream,16);
/*-----------------------------------------------------------------------*/
/* MB type */
/*-----------------------------------------------------------------------*/
{
u2_mb_type = ps_dec->pu2_mb_type[BITS((UWORD16)u4_next_word,15,10)];
u2_len = BITS(u2_mb_type,15,8);
u2_total_len = u2_len;
u4_next_word = (UWORD16)LSW((UWORD16)u4_next_word << u2_len);
}
/*-----------------------------------------------------------------------*/
/* motion type */
/*-----------------------------------------------------------------------*/
{
WORD32 i4_motion_type = ps_dec->u2_motion_type;
if((u2_mb_type & MB_FORW_OR_BACK) && ps_dec->u2_read_motion_type)
{
ps_dec->u2_motion_type = BITS((UWORD16)u4_next_word,15,14);
u2_total_len += MB_MOTION_TYPE_LEN;
u4_next_word = (UWORD16)LSW((UWORD16)u4_next_word << MB_MOTION_TYPE_LEN);
i4_motion_type = ps_dec->u2_motion_type;
}
if ((u2_mb_type & MB_FORW_OR_BACK) &&
((i4_motion_type == 0) ||
(i4_motion_type == 3) ||
(i4_motion_type == 4) ||
(i4_motion_type >= 7)))
{
//TODO: VANG Check for validity
i4_motion_type = 1;
}
}
/*-----------------------------------------------------------------------*/
/* dct type */
/*-----------------------------------------------------------------------*/
{
if((u2_mb_type & MB_CODED) && ps_dec->u2_read_dct_type)
{
ps_dec->u2_field_dct = BIT((UWORD16)u4_next_word,15);
u2_total_len += MB_DCT_TYPE_LEN;
u4_next_word = (UWORD16)LSW((UWORD16)u4_next_word << MB_DCT_TYPE_LEN);
}
}
/*-----------------------------------------------------------------------*/
/* Quant scale code */
/*-----------------------------------------------------------------------*/
if(u2_mb_type & MB_QUANT)
{
UWORD16 u2_quant_scale_code;
u2_quant_scale_code = BITS((UWORD16)u4_next_word,15,11);
ps_dec->u1_quant_scale = (ps_dec->u2_q_scale_type) ?
gau1_impeg2_non_linear_quant_scale[u2_quant_scale_code] : (u2_quant_scale_code << 1);
u2_total_len += MB_QUANT_SCALE_CODE_LEN;
}
impeg2d_bit_stream_flush(ps_stream,u2_total_len);
/*-----------------------------------------------------------------------*/
/* Set the function pointers */
/*-----------------------------------------------------------------------*/
ps_dec->u2_coded_mb = (UWORD16)(u2_mb_type & MB_CODED);
if(u2_mb_type & MB_BIDRECT)
{
UWORD16 u2_index = (ps_dec->u2_motion_type);
ps_dec->u2_prev_intra_mb = 0;
ps_dec->e_mb_pred = BIDIRECT;
ps_dec_mb_params = &ps_dec->ps_func_bi_direct[u2_index];
ps_dec->s_mb_type = ps_dec_mb_params->s_mb_type;
if(NULL == ps_dec_mb_params->pf_func_mb_params)
return -1;
ps_dec_mb_params->pf_func_mb_params(ps_dec);
}
else if(u2_mb_type & MB_FORW_OR_BACK)
{
UWORD16 u2_refPic = !(u2_mb_type & MB_MV_FORW);
UWORD16 u2_index = (ps_dec->u2_motion_type);
ps_dec->u2_prev_intra_mb = 0;
ps_dec->e_mb_pred = (e_pred_direction_t)u2_refPic;
ps_dec_mb_params = &ps_dec->ps_func_forw_or_back[u2_index];
ps_dec->s_mb_type = ps_dec_mb_params->s_mb_type;
if(NULL == ps_dec_mb_params->pf_func_mb_params)
return -1;
ps_dec_mb_params->pf_func_mb_params(ps_dec);
}
else if(u2_mb_type & MB_TYPE_INTRA)
{
ps_dec->u2_prev_intra_mb = 1;
impeg2d_dec_intra_mb(ps_dec);
}
else
{
ps_dec->u2_prev_intra_mb =0;
ps_dec->e_mb_pred = FORW;
ps_dec->u2_motion_type = 0;
impeg2d_dec_0mv_coded_mb(ps_dec);
}
/*-----------------------------------------------------------------------*/
/* decode cbp */
/*-----------------------------------------------------------------------*/
if((u2_mb_type & MB_TYPE_INTRA))
{
ps_dec->u2_cbp = 0x3f;
ps_dec->u2_prev_intra_mb = 1;
}
else
{
ps_dec->u2_prev_intra_mb = 0;
ps_dec->u2_def_dc_pred[Y_LUMA] = 128 << ps_dec->u2_intra_dc_precision;
ps_dec->u2_def_dc_pred[U_CHROMA] = 128 << ps_dec->u2_intra_dc_precision;
ps_dec->u2_def_dc_pred[V_CHROMA] = 128 << ps_dec->u2_intra_dc_precision;
if((ps_dec->u2_coded_mb))
{
UWORD16 cbpValue;
cbpValue = gau2_impeg2d_cbp_code[impeg2d_bit_stream_nxt(ps_stream,MB_CBP_LEN)];
ps_dec->u2_cbp = cbpValue & 0xFF;
impeg2d_bit_stream_flush(ps_stream,(cbpValue >> 8) & 0x0FF);
}
else
{
ps_dec->u2_cbp = 0;
}
}
return 0;
}
/*******************************************************************************
* Function Name : impeg2d_dec_p_b_slice
*
* Description : Decodes P and B slices
*
* Arguments :
* dec : Decoder state
*
* Values Returned : None
*******************************************************************************/
IMPEG2D_ERROR_CODES_T impeg2d_dec_p_b_slice(dec_state_t *ps_dec)
{
WORD16 *pi2_vld_out;
UWORD32 i;
yuv_buf_t *ps_cur_frm_buf = &ps_dec->s_cur_frm_buf;
UWORD32 u4_frm_offset = 0;
const dec_mb_params_t *ps_dec_mb_params;
IMPEG2D_ERROR_CODES_T e_error = (IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE;
pi2_vld_out = ps_dec->ai2_vld_buf;
memset(ps_dec->ai2_pred_mv,0,sizeof(ps_dec->ai2_pred_mv));
ps_dec->u2_prev_intra_mb = 0;
ps_dec->u2_first_mb = 1;
ps_dec->u2_picture_width = ps_dec->u2_frame_width;
if(ps_dec->u2_picture_structure != FRAME_PICTURE)
{
ps_dec->u2_picture_width <<= 1;
if(ps_dec->u2_picture_structure == BOTTOM_FIELD)
{
u4_frm_offset = ps_dec->u2_frame_width;
}
}
do
{
UWORD32 u4_x_offset, u4_y_offset;
WORD32 ret;
UWORD32 u4_x_dst_offset = 0;
UWORD32 u4_y_dst_offset = 0;
UWORD8 *pu1_out_p;
UWORD8 *pu1_pred;
WORD32 u4_pred_strd;
IMPEG2D_TRACE_MB_START(ps_dec->u2_mb_x, ps_dec->u2_mb_y);
if(ps_dec->e_pic_type == B_PIC)
ret = impeg2d_dec_pnb_mb_params(ps_dec);
else
ret = impeg2d_dec_p_mb_params(ps_dec);
if(ret)
return IMPEG2D_MB_TEX_DECODE_ERR;
IMPEG2D_TRACE_MB_START(ps_dec->u2_mb_x, ps_dec->u2_mb_y);
u4_x_dst_offset = u4_frm_offset + (ps_dec->u2_mb_x << 4);
u4_y_dst_offset = (ps_dec->u2_mb_y << 4) * ps_dec->u2_picture_width;
pu1_out_p = ps_cur_frm_buf->pu1_y + u4_x_dst_offset + u4_y_dst_offset;
if(ps_dec->u2_prev_intra_mb == 0)
{
UWORD32 offset_x, offset_y, stride;
UWORD16 index = (ps_dec->u2_motion_type);
/*only for non intra mb's*/
if(ps_dec->e_mb_pred == BIDIRECT)
{
ps_dec_mb_params = &ps_dec->ps_func_bi_direct[index];
}
else
{
ps_dec_mb_params = &ps_dec->ps_func_forw_or_back[index];
}
stride = ps_dec->u2_picture_width;
offset_x = u4_frm_offset + (ps_dec->u2_mb_x << 4);
offset_y = (ps_dec->u2_mb_y << 4);
ps_dec->s_dest_buf.pu1_y = ps_cur_frm_buf->pu1_y + offset_y * stride + offset_x;
stride = stride >> 1;
ps_dec->s_dest_buf.pu1_u = ps_cur_frm_buf->pu1_u + (offset_y >> 1) * stride
+ (offset_x >> 1);
ps_dec->s_dest_buf.pu1_v = ps_cur_frm_buf->pu1_v + (offset_y >> 1) * stride
+ (offset_x >> 1);
PROFILE_DISABLE_MC_IF0
ps_dec_mb_params->pf_mc(ps_dec);
}
for(i = 0; i < NUM_LUMA_BLKS; ++i)
{
if((ps_dec->u2_cbp & (1 << (BLOCKS_IN_MB - 1 - i))) != 0)
{
e_error = ps_dec->pf_vld_inv_quant(ps_dec, pi2_vld_out, ps_dec->pu1_inv_scan_matrix,
ps_dec->u2_prev_intra_mb, Y_LUMA, 0);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
u4_x_offset = gai2_impeg2_blk_x_off[i];
if(ps_dec->u2_field_dct == 0)
u4_y_offset = gai2_impeg2_blk_y_off_frm[i] ;
else
u4_y_offset = gai2_impeg2_blk_y_off_fld[i] ;
IMPEG2D_IDCT_INP_STATISTICS(pi2_vld_out, ps_dec->u4_non_zero_cols, ps_dec->u4_non_zero_rows);
PROFILE_DISABLE_IDCT_IF0
{
WORD32 idx;
if(1 == (ps_dec->u4_non_zero_cols | ps_dec->u4_non_zero_rows))
idx = 0;
else
idx = 1;
if(0 == ps_dec->u2_prev_intra_mb)
{
pu1_pred = pu1_out_p + u4_y_offset * ps_dec->u2_picture_width + u4_x_offset;
u4_pred_strd = ps_dec->u2_picture_width << ps_dec->u2_field_dct;
}
else
{
pu1_pred = (UWORD8 *)gau1_impeg2_zerobuf;
u4_pred_strd = 8;
}
ps_dec->pf_idct_recon[idx * 2 + ps_dec->i4_last_value_one](pi2_vld_out,
ps_dec->ai2_idct_stg1,
pu1_pred,
pu1_out_p + u4_y_offset * ps_dec->u2_picture_width + u4_x_offset,
8,
u4_pred_strd,
ps_dec->u2_picture_width << ps_dec->u2_field_dct,
~ps_dec->u4_non_zero_cols, ~ps_dec->u4_non_zero_rows);
}
}
}
/* For U and V blocks, divide the x and y offsets by 2. */
u4_x_dst_offset >>= 1;
u4_y_dst_offset >>= 2;
/* In case of chrominance blocks the DCT will be frame DCT */
/* i = 0, U component and i = 1 is V componet */
if((ps_dec->u2_cbp & 0x02) != 0)
{
pu1_out_p = ps_cur_frm_buf->pu1_u + u4_x_dst_offset + u4_y_dst_offset;
e_error = ps_dec->pf_vld_inv_quant(ps_dec, pi2_vld_out, ps_dec->pu1_inv_scan_matrix,
ps_dec->u2_prev_intra_mb, U_CHROMA, 0);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
IMPEG2D_IDCT_INP_STATISTICS(pi2_vld_out, ps_dec->u4_non_zero_cols, ps_dec->u4_non_zero_rows);
PROFILE_DISABLE_IDCT_IF0
{
WORD32 idx;
if(1 == (ps_dec->u4_non_zero_cols | ps_dec->u4_non_zero_rows))
idx = 0;
else
idx = 1;
if(0 == ps_dec->u2_prev_intra_mb)
{
pu1_pred = pu1_out_p;
u4_pred_strd = ps_dec->u2_picture_width >> 1;
}
else
{
pu1_pred = (UWORD8 *)gau1_impeg2_zerobuf;
u4_pred_strd = 8;
}
ps_dec->pf_idct_recon[idx * 2 + ps_dec->i4_last_value_one](pi2_vld_out,
ps_dec->ai2_idct_stg1,
pu1_pred,
pu1_out_p,
8,
u4_pred_strd,
ps_dec->u2_picture_width >> 1,
~ps_dec->u4_non_zero_cols, ~ps_dec->u4_non_zero_rows);
}
}
if((ps_dec->u2_cbp & 0x01) != 0)
{
pu1_out_p = ps_cur_frm_buf->pu1_v + u4_x_dst_offset + u4_y_dst_offset;
e_error = ps_dec->pf_vld_inv_quant(ps_dec, pi2_vld_out, ps_dec->pu1_inv_scan_matrix,
ps_dec->u2_prev_intra_mb, V_CHROMA, 0);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
IMPEG2D_IDCT_INP_STATISTICS(pi2_vld_out, ps_dec->u4_non_zero_cols, ps_dec->u4_non_zero_rows);
PROFILE_DISABLE_IDCT_IF0
{
WORD32 idx;
if(1 == (ps_dec->u4_non_zero_cols | ps_dec->u4_non_zero_rows))
idx = 0;
else
idx = 1;
if(0 == ps_dec->u2_prev_intra_mb)
{
pu1_pred = pu1_out_p;
u4_pred_strd = ps_dec->u2_picture_width >> 1;
}
else
{
pu1_pred = (UWORD8 *)gau1_impeg2_zerobuf;
u4_pred_strd = 8;
}
ps_dec->pf_idct_recon[idx * 2 + ps_dec->i4_last_value_one](pi2_vld_out,
ps_dec->ai2_idct_stg1,
pu1_pred,
pu1_out_p,
8,
u4_pred_strd,
ps_dec->u2_picture_width >> 1,
~ps_dec->u4_non_zero_cols, ~ps_dec->u4_non_zero_rows);
}
}
ps_dec->u2_num_mbs_left--;
ps_dec->u2_first_mb = 0;
ps_dec->u2_mb_x++;
if(ps_dec->s_bit_stream.u4_offset > ps_dec->s_bit_stream.u4_max_offset)
{
return IMPEG2D_BITSTREAM_BUFF_EXCEEDED_ERR;
}
else if (ps_dec->u2_mb_x == ps_dec->u2_num_horiz_mb)
{
ps_dec->u2_mb_x = 0;
ps_dec->u2_mb_y++;
}
}
while(ps_dec->u2_num_mbs_left != 0 && impeg2d_bit_stream_nxt(&ps_dec->s_bit_stream,23) != 0x0);
return e_error;
}