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468 lines
21 KiB
468 lines
21 KiB
/******************************************************************************
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*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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/**
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*******************************************************************************
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* @file
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* impeg2d_mcu.c
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*
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* @brief
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* Contains MC function definitions for MPEG2 decoder
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*
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* @author
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* Harish
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*
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* @par List of Functions:
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* - impeg2_copy_mb()
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* - impeg2_interpolate()
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* - impeg2_mc_halfx_halfy_8x8()
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* - impeg2_mc_halfx_fully_8x8()
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* - impeg2_mc_fullx_halfy_8x8()
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* - impeg2_mc_fullx_fully_8x8()
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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#include <stdio.h>
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#include <string.h>
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#include "iv_datatypedef.h"
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#include "iv.h"
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#include "impeg2_buf_mgr.h"
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#include "impeg2_disp_mgr.h"
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#include "impeg2_defs.h"
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#include "impeg2_platform_macros.h"
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#include "impeg2_inter_pred.h"
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#include "impeg2_globals.h"
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#include "impeg2_macros.h"
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#include "impeg2_idct.h"
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/*******************************************************************************
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* Function Name : impeg2_copy_mb
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*
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* Description : copies 3 components to the frame from mc_buf
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*
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* Arguments :
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* src_buf : Source Buffer
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* dst_buf : Destination Buffer
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* src_offset_x : X offset for source
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* src_offset_y : Y offset for source
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* dst_offset_x : X offset for destination
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* dst_offset_y : Y offset for destination
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* src_wd : Source Width
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* dst_wd : destination Width
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* rows : Number of rows
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* cols : Number of columns
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*
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* Values Returned : None
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*******************************************************************************/
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void impeg2_copy_mb(yuv_buf_t *ps_src_buf,
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yuv_buf_t *ps_dst_buf,
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UWORD32 u4_src_wd,
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UWORD32 u4_dst_wd)
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{
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UWORD8 *pu1_src;
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UWORD8 *pu1_dst;
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UWORD32 i;
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UWORD32 u4_rows = MB_SIZE;
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UWORD32 u4_cols = MB_SIZE;
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/*******************************************************/
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/* copy Y */
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/*******************************************************/
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pu1_src = ps_src_buf->pu1_y;
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pu1_dst = ps_dst_buf->pu1_y;
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for(i = 0; i < u4_rows; i++)
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{
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memcpy(pu1_dst, pu1_src, u4_cols);
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pu1_src += u4_src_wd;
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pu1_dst += u4_dst_wd;
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}
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u4_src_wd >>= 1;
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u4_dst_wd >>= 1;
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u4_rows >>= 1;
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u4_cols >>= 1;
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/*******************************************************/
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/* copy U */
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/*******************************************************/
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pu1_src = ps_src_buf->pu1_u;
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pu1_dst = ps_dst_buf->pu1_u;
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for(i = 0; i < u4_rows; i++)
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{
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memcpy(pu1_dst, pu1_src, u4_cols);
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pu1_src += u4_src_wd;
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pu1_dst += u4_dst_wd;
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}
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/*******************************************************/
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/* copy V */
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/*******************************************************/
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pu1_src = ps_src_buf->pu1_v;
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pu1_dst = ps_dst_buf->pu1_v;
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for(i = 0; i < u4_rows; i++)
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{
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memcpy(pu1_dst, pu1_src, u4_cols);
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pu1_src += u4_src_wd;
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pu1_dst += u4_dst_wd;
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}
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}
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/*****************************************************************************/
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/* */
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/* Function Name : impeg2_interpolate */
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/* */
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/* Description : averages the contents of buf_src1 and buf_src2 and stores*/
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/* result in buf_dst */
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/* */
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/* Inputs : buf_src1 - First Source */
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/* buf_src2 - Second Source */
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/* */
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/* Globals : None */
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/* */
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/* Processing : Avg the values from two sources and store the result in */
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/* destination buffer */
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/* */
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/* Outputs : buf_dst - Avg of contents of buf_src1 and buf_src2 */
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/* */
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/* Returns : None */
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/* */
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/* Issues : Assumes that all 3 buffers are of same size */
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/* */
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/* Revision History: */
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/* */
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/* DD MM YYYY Author(s) Changes */
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/* 14 09 2005 Harish M First Version */
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/* 15 09 2010 Venkat Added stride */
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/* */
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/*****************************************************************************/
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void impeg2_interpolate(yuv_buf_t *ps_buf_src1,
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yuv_buf_t *ps_buf_src2,
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yuv_buf_t *ps_buf_dst,
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UWORD32 u4_stride)
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{
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UWORD32 i,j;
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UWORD8 *pu1_src1,*pu1_src2,*pu1_dst;
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pu1_src1 = ps_buf_src1->pu1_y;
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pu1_src2 = ps_buf_src2->pu1_y;
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pu1_dst = ps_buf_dst->pu1_y;
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for(i = MB_SIZE; i > 0; i--)
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{
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for(j = MB_SIZE; j > 0; j--)
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{
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*pu1_dst++ = ((*pu1_src1++) + (*pu1_src2++) + 1) >> 1;
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}
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pu1_dst += u4_stride - MB_SIZE;
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}
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u4_stride >>= 1;
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pu1_src1 = ps_buf_src1->pu1_u;
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pu1_src2 = ps_buf_src2->pu1_u;
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pu1_dst = ps_buf_dst->pu1_u;
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for(i = MB_CHROMA_SIZE; i > 0 ; i--)
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{
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for(j = MB_CHROMA_SIZE; j > 0; j--)
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{
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*pu1_dst++ = ((*pu1_src1++) + (*pu1_src2++) + 1) >> 1;
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}
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pu1_dst += u4_stride - MB_CHROMA_SIZE;
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}
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pu1_src1 = ps_buf_src1->pu1_v;
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pu1_src2 = ps_buf_src2->pu1_v;
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pu1_dst = ps_buf_dst->pu1_v;
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for(i = MB_CHROMA_SIZE; i > 0 ; i--)
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{
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for(j = MB_CHROMA_SIZE; j > 0; j--)
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{
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*pu1_dst++ = ((*pu1_src1++) + (*pu1_src2++) + 1) >> 1;
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}
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pu1_dst += u4_stride - MB_CHROMA_SIZE;
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}
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}
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/*****************************************************************************/
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/* */
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/* Function Name : impeg2_mc_halfx_halfy_8x8() */
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/* */
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/* Description : Gets the buffer from (0.5,0.5) to (8.5,8.5) */
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/* and the above block of size 8 x 8 will be placed as a */
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/* block from the current position of out_buf */
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/* */
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/* Inputs : ref - Reference frame from which the block will be */
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/* block will be extracted. */
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/* ref_wid - WIdth of reference frame */
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/* out_wid - WIdth of the output frame */
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/* blk_width - width of the block */
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/* blk_width - height of the block */
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/* */
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/* Globals : None */
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/* */
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/* Processing : Point to the (0,0),(1,0),(0,1),(1,1) position in */
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/* the ref frame.Interpolate these four values to get the */
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/* value at(0.5,0.5).Repeat this to get an 8 x 8 block */
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/* using 9 x 9 block from reference frame */
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/* */
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/* Outputs : out - Output containing the extracted block */
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/* */
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/* Returns : None */
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/* */
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/* Issues : None */
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/* */
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/* Revision History: */
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/* */
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/* DD MM YYYY Author(s) Changes */
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/* 05 09 2005 Harish M First Version */
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/* */
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/*****************************************************************************/
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void impeg2_mc_halfx_halfy_8x8(UWORD8 *pu1_out,
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UWORD8 *pu1_ref,
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UWORD32 u4_ref_wid,
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UWORD32 u4_out_wid)
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{
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UWORD8 *pu1_ref_p0,*pu1_ref_p1,*pu1_ref_p2,*pu1_ref_p3;
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UWORD32 i,j;
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/* P0-P3 are the pixels in the reference frame and Q is the value being */
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/* estimated */
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/*
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P0 P1
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Q
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P2 P3
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*/
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pu1_ref_p0 = pu1_ref;
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pu1_ref_p1 = pu1_ref + 1;
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pu1_ref_p2 = pu1_ref + u4_ref_wid;
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pu1_ref_p3 = pu1_ref + u4_ref_wid + 1;
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for(i = 0; i < BLK_SIZE; i++)
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{
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for(j = 0; j < BLK_SIZE; j++)
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{
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*pu1_out++ = (( (*pu1_ref_p0++ )
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+ (*pu1_ref_p1++ )
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+ (*pu1_ref_p2++ )
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+ (*pu1_ref_p3++ ) + 2 ) >> 2);
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}
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pu1_ref_p0 += u4_ref_wid - BLK_SIZE;
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pu1_ref_p1 += u4_ref_wid - BLK_SIZE;
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pu1_ref_p2 += u4_ref_wid - BLK_SIZE;
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pu1_ref_p3 += u4_ref_wid - BLK_SIZE;
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pu1_out += u4_out_wid - BLK_SIZE;
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}
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return;
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}
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/*****************************************************************************/
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/* */
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/* Function Name : impeg2_mc_halfx_fully_8x8() */
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/* */
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/* Description : Gets the buffer from (0.5,0) to (8.5,8) */
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/* and the above block of size 8 x 8 will be placed as a */
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/* block from the current position of out_buf */
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/* */
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/* Inputs : ref - Reference frame from which the block will be */
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/* block will be extracted. */
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/* ref_wid - WIdth of reference frame */
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/* out_wid - WIdth of the output frame */
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/* blk_width - width of the block */
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/* blk_width - height of the block */
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/* */
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/* Globals : None */
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/* */
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/* Processing : Point to the (0,0) and (1,0) position in the ref frame */
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/* Interpolate these two values to get the value at(0.5,0) */
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/* Repeat this to get an 8 x 8 block using 9 x 8 block from */
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/* reference frame */
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/* */
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/* Outputs : out - Output containing the extracted block */
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/* */
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/* Returns : None */
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/* */
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/* Issues : None */
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/* */
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/* Revision History: */
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/* */
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/* DD MM YYYY Author(s) Changes */
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/* 05 09 2005 Harish M First Version */
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/* */
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/*****************************************************************************/
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void impeg2_mc_halfx_fully_8x8(UWORD8 *pu1_out,
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UWORD8 *pu1_ref,
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UWORD32 u4_ref_wid,
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UWORD32 u4_out_wid)
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{
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UWORD8 *pu1_ref_p0, *pu1_ref_p1;
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UWORD32 i,j;
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/* P0-P3 are the pixels in the reference frame and Q is the value being */
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/* estimated */
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/*
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P0 Q P1
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*/
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pu1_ref_p0 = pu1_ref;
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pu1_ref_p1 = pu1_ref + 1;
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for(i = 0; i < BLK_SIZE; i++)
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{
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for(j = 0; j < BLK_SIZE; j++)
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{
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*pu1_out++ = ((( *pu1_ref_p0++ )
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+ (*pu1_ref_p1++) + 1 ) >> 1);
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}
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pu1_ref_p0 += u4_ref_wid - BLK_SIZE;
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pu1_ref_p1 += u4_ref_wid - BLK_SIZE;
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pu1_out += u4_out_wid - BLK_SIZE;
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}
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return;
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}
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/*****************************************************************************/
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/* */
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/* Function Name : impeg2_mc_fullx_halfy_8x8() */
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/* */
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/* Description : Gets the buffer from (0,0.5) to (8,8.5) */
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/* and the above block of size 8 x 8 will be placed as a */
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/* block from the current position of out_buf */
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/* */
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/* Inputs : ref - Reference frame from which the block will be */
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/* block will be extracted. */
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/* ref_wid - WIdth of reference frame */
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/* out_wid - WIdth of the output frame */
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/* blk_width - width of the block */
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/* blk_width - height of the block */
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/* */
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/* Globals : None */
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/* */
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/* Processing : Point to the (0,0) and (0,1) position in the ref frame */
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/* Interpolate these two values to get the value at(0,0.5) */
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/* Repeat this to get an 8 x 8 block using 8 x 9 block from */
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/* reference frame */
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/* */
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/* Outputs : out - Output containing the extracted block */
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/* */
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/* Returns : None */
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/* */
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/* Issues : None */
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/* */
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/* Revision History: */
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/* */
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/* DD MM YYYY Author(s) Changes */
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/* 05 09 2005 Harish M First Version */
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/* */
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/*****************************************************************************/
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void impeg2_mc_fullx_halfy_8x8(UWORD8 *pu1_out,
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UWORD8 *pu1_ref,
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UWORD32 u4_ref_wid,
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UWORD32 u4_out_wid)
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{
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UWORD8 *pu1_ref_p0, *pu1_ref_p1;
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UWORD32 i,j;
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/* P0-P3 are the pixels in the reference frame and Q is the value being */
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/* estimated */
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/*
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P0
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x
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P1
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*/
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pu1_ref_p0 = pu1_ref;
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pu1_ref_p1 = pu1_ref + u4_ref_wid;
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for(i = 0; i < BLK_SIZE; i++)
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{
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for(j = 0; j < BLK_SIZE; j++)
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{
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*pu1_out++ = ((( *pu1_ref_p0++)
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+ (*pu1_ref_p1++) + 1 ) >> 1);
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}
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pu1_ref_p0 += u4_ref_wid - BLK_SIZE;
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pu1_ref_p1 += u4_ref_wid - BLK_SIZE;
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pu1_out += u4_out_wid - BLK_SIZE;
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}
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return;
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}
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/*****************************************************************************/
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/* */
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/* Function Name : impeg2_mc_fullx_fully_8x8() */
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/* */
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/* Description : Gets the buffer from (x,y) to (x+8,y+8) */
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/* and the above block of size 8 x 8 will be placed as a */
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/* block from the current position of out_buf */
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/* */
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/* Inputs : ref - Reference frame from which the block will be */
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/* block will be extracted. */
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/* ref_wid - WIdth of reference frame */
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/* out_wid - WIdth of the output frame */
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/* blk_width - width of the block */
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/* blk_width - height of the block */
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/* */
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/* Globals : None */
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/* */
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/* Processing : Point to the (0,0) position in the ref frame */
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/* Get an 8 x 8 block from reference frame */
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/* */
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/* Outputs : out - Output containing the extracted block */
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/* */
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/* Returns : None */
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/* */
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/* Issues : None */
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/* */
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/* Revision History: */
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/* */
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/* DD MM YYYY Author(s) Changes */
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/* 05 09 2005 Harish M First Version */
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/* */
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/*****************************************************************************/
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void impeg2_mc_fullx_fully_8x8(UWORD8 *pu1_out,
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UWORD8 *pu1_ref,
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UWORD32 u4_ref_wid,
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UWORD32 u4_out_wid)
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{
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UWORD32 i;
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for(i = 0; i < BLK_SIZE; i++)
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{
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memcpy(pu1_out, pu1_ref, BLK_SIZE);
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pu1_ref += u4_ref_wid;
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pu1_out += u4_out_wid;
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}
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return;
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}
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