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