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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: load_Y_16x16T.asm
//
// Load and transpose 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_SRC_Y: Binding table index of Y surface
//
//----------------------------------------------------------------
#if defined(_DEBUG)
mov (1) EntrySignatureC:w 0xDDD1:w
#endif
// FieldModeCurrentMbFlag determines how to access left 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 // Get bottom field flag
// Read Y
mov (2) MSGSRC.0<1>:d ORIX_CUR<2;2,1>:w { NoDDClr } // Block origin
mov (1) MSGSRC.2<1>:ud 0x000F000F:ud { NoDDChk } // Block width and height (16x16)
// Set message descriptor, etc.
(f0.0) if (1) ILDB_LABEL(ELSE_Y_16x16T)
// Frame picture
mov (1) MSGDSC RESP_LEN(8)+DWBRMSGDSC_SC+BI_SRC_Y:ud // Read 8 GRFs from SRC_Y
(f0.1) add (1) MSGSRC.1:d MSGSRC.1:d 16:w // Add vertical offset 16 for bot MB in MBAFF mode
ILDB_LABEL(ELSE_Y_16x16T):
else (1) ILDB_LABEL(ENDIF_Y_16x16T)
// Field picture
(f0.1) mov (1) MSGDSC RESP_LEN(8)+DWBRMSGDSC_SC_BF+BI_SRC_Y:ud // Read 8 GRFs from SRC_Y bottom field
(-f0.1) mov (1) MSGDSC RESP_LEN(8)+DWBRMSGDSC_SC_TF+BI_SRC_Y:ud // Read 8 GRFs from SRC_Y top field
asr (1) MSGSRC.1:d MSGSRC.1:d 1:w // Reduce y by half in field access mode
endif
ILDB_LABEL(ENDIF_Y_16x16T):
send (8) SRC_YD(0)<1> MSGHDRY MSGSRC<8;8,1>:ud DAPREAD MSGDSC
// #include "Transpose_Cur_Y_16x16.asm"
// End of load_Y_16x16T
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