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/*
* Copyright © <2010>, Intel Corporation.
*
* This program is licensed under the terms and conditions of the
* Eclipse Public License (EPL), version 1.0. The full text of the EPL is at
* http://www.opensource.org/licenses/eclipse-1.0.php.
*
*/
// Module name: save_Cur_Y_16x16.asm
//
// Save a Y 16x16 block
//
//----------------------------------------------------------------
// 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 // 8 GRFs
//
// Binding table index:
// BI_DEST_Y: Binding table index of Y surface
//
//----------------------------------------------------------------
#if defined(_DEBUG)
mov (1) EntrySignatureC:w 0xDDD4:w
#endif
and.z.f0.0 (1) null:w r[ECM_AddrReg, BitFlags]:ub FieldModeCurrentMbFlag:w
and.nz.f0.1 (1) NULLREGW BitFields:w BotFieldFlag:w
mov (2) MSGSRC.0<1>:ud ORIX_CUR<2;2,1>:w { NoDDClr } // Block origin
mov (1) MSGSRC.2<1>:ud 0x000F000F:ud { NoDDChk } // Block width and height (16x16 or 12x16)
// Pack Y
mov (16) MSGPAYLOADD(0)<1> SRC_YD(0) // Compressed inst
mov (16) MSGPAYLOADD(2)<1> SRC_YD(2)
mov (16) MSGPAYLOADD(4)<1> SRC_YD(4)
mov (16) MSGPAYLOADD(6)<1> SRC_YD(6)
// Set message descriptor
(f0.0) if (1) ELSE_Y_16x16
// Frame picture
mov (1) MSGDSC MSG_LEN(8)+DWBWMSGDSC+BI_DEST_Y:ud // Write 8 GRFs to DEST_Y
(f0.1) add (1) MSGSRC.1:d MSGSRC.1:d 16:w // Add vertical offset 16 for bot MB in MBAFF mode
ELSE_Y_16x16:
else (1) ENDIF_Y_16x16
// Field picture
(f0.1) mov (1) MSGDSC MSG_LEN(8)+DWBWMSGDSC+ENMSGDSCBF+BI_DEST_Y:ud // Write 8 GRFs to DEST_Y bottom field
(-f0.1) mov (1) MSGDSC MSG_LEN(8)+DWBWMSGDSC+ENMSGDSCTF+BI_DEST_Y:ud // Write 8 GRFs to DEST_Y top field
asr (1) MSGSRC.1:d MSGSRC.1:d 1:w // Reduce y by half in field access mode
endif
ENDIF_Y_16x16:
send (8) null:ud MSGHDR MSGSRC<8;8,1>:ud DAPWRITE MSGDSC
// End of save_Cur_Y_16x16.asm
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