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/*
* Copyright © <2010>, Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* This file was originally licensed under the following license
*
* 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.
*
*/
// Module Name: Load_Y_16X4.asm
//
// Load Y 16X4 Block to PREV_MB_YD
//
//----------------------------------------------------------------
// Symbols Need To Be Defined Before Including This Module
//
// Source Region In :Ud
// Src_YD: Src_Yd Base=Rxx Elementsize=4 Srcregion=Region(8,1) Type=Ud // 3 Grfs (2 For Y, 1 For U+V)
//
// Source Region Is :Ub. The Same Region As :Ud Region
// Src_YB: Src_Yb Base=Rxx Elementsize=1 Srcregion=Region(16,1) Type=Ub // 2 Grfs
//
// Binding Table Index:
// Bi_Src_Y: Binding Table Index Of Y Surface
//
// Temp Buffer:
// Buf_D: Buf_D Base=Rxx Elementsize=4 Srcregion=Region(8,1) Type=Ud
// Buf_B: Buf_B Base=Rxx Elementsize=1 Srcregion=Region(16,1) Type=Ub
//
//----------------------------------------------------------------
#if defined(_DEBUG)
mov (1) EntrySignatureC:w 0xDDD2:w
#endif
// FieldModeCurrentMbFlag determines how to access above MB
and.z.f0.0 (1) null:w r[ECM_AddrReg, BitFlags]:ub FieldModeCurrentMbFlag:w
and.nz.f0.1 (1) NULLREGW BitFields:w BotFieldFlag:w
// Read Y
mov (2) MSGSRC.0<1>:ud ORIX_TOP<2;2,1>:w { NoDDClr } // Block origin
mov (1) MSGSRC.2<1>:ud 0x0003000F:ud { NoDDChk } // Block width and height (16x4)
// Set message descriptor
(f0.0) if (1) ELSE_Y_16x4
// Frame picture
mov (1) MSGDSC RESP_LEN(2)+DWBRMSGDSC_RC+BI_DEST_Y:ud // Read 2 GRFs from SRC_Y
// Add vertical offset 16 for bot MB in MBAFF mode
(f0.1) add (1) MSGSRC.1:d MSGSRC.1:d 16:w
// Dual field mode setup
and.z.f0.1 (1) NULLREGW DualFieldMode:w 1:w
(f0.1) jmpi NOT_DUAL_FIELD
add (1) MSGSRC.1:d MSGSRC.1:d -4:w { NoDDClr } // Load 8 lines in above MB
mov (1) MSGSRC.2:ud 0x0007000F:ud { NoDDChk } // New block width and height (16x8)
add (1) MSGDSC MSGDSC RESP_LEN(2):ud // 2 more GRF to receive
NOT_DUAL_FIELD:
ELSE_Y_16x4:
else (1) ENDIF_Y_16x4
asr (1) MSGSRC.1:d ORIY_CUR:w 1:w // Reduce y by half in field access mode
// Field picture
(f0.1) mov (1) MSGDSC RESP_LEN(2)+DWBRMSGDSC_RC_BF+BI_DEST_Y:ud // Read 2 GRFs from SRC_Y bottom field
(-f0.1) mov (1) MSGDSC RESP_LEN(2)+DWBRMSGDSC_RC_TF+BI_DEST_Y:ud // Read 2 GRFs from SRC_Y top field
add (1) MSGSRC.1:d MSGSRC.1:d -4:w // for last 4 rows of above MB
endif
ENDIF_Y_16x4:
// Read 2 GRFs from DEST surface, as the above MB has been deblocked
send (8) PREV_MB_YD(0)<1> MSGHDRY MSGSRC<8;8,1>:ud DAPREAD MSGDSC
// End of load_Y_16x4.asm
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