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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_Left_Y_16x4T.asm
//
// Transpose 16x4 to 4x16 Y data and write to memory
//
//----------------------------------------------------------------
// Symbols need to be defined before including this module
//
// Left MB region:
// PREV_MB_YB: Base=rxx ElementSize=1 SrcRegion=REGION(16,1) Type=ub
// Binding table index:
// BI_SRC_Y: Binding table index of Y surface
//
// Temp buffer:
// BUF_B: BUF_B Base=rxx ElementSize=1 SrcRegion=REGION(16,1) Type=ub
//
//
#if defined(_DEBUG)
mov (1) EntrySignatureC:w 0xDDD6: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_LEFT<2;2,1>:w { NoDDClr } // Block origin
mov (1) MSGSRC.2<1>:ud 0x000F0003:ud { NoDDChk } // 4x16
// Transpose Y, save them to MRFs
// 16x4 Y src in GRF (each pix is specified as yx)
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |f1 e1 d1 c1 b1 a1 91 81 71 61 51 41 31 21 11 01 f0 e0 d0 c0 b0 a0 90 80 70 60 50 40 30 20 10 00|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |f3 e3 d3 c3 b3 a3 93 83 73 63 53 43 33 23 13 03 f2 e2 d2 c2 b2 a2 92 82 72 62 52 42 32 22 12 02|
// +-----------------------+-----------------------+-----------------------+-----------------------+
//
// First step (16) <1> <=== <16;4,1>
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |73 63 53 43 72 62 52 42 71 61 51 41 70 60 50 40 33 23 13 03 32 22 12 02 31 21 11 01 30 20 10 00|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |f3 e3 d3 c3 f2 e2 d2 c2 f1 e1 d1 c1 f0 e0 d0 c0 b3 a3 93 83 b2 a2 92 82 b1 a1 91 81 b0 a0 90 80|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// The first step
mov (16) BUF_B(0,0)<1> PREV_MB_YB(0,0)<16;4,1> { NoDDClr }
mov (16) BUF_B(0,16)<1> PREV_MB_YB(0,4)<16;4,1> { NoDDChk }
mov (16) BUF_B(1,0)<1> PREV_MB_YB(0,8)<16;4,1> { NoDDClr }
mov (16) BUF_B(1,16)<1> PREV_MB_YB(0,12)<16;4,1> { NoDDChk }
//
// Second step (16) <1> <=== <1;4,4>
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |73 72 71 70 63 62 61 60 53 52 51 50 43 42 41 40 33 32 31 30 23 22 21 20 13 12 11 10 03 02 01 00|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |f3 f2 f1 f0 e3 e2 e1 e0 d3 d2 d1 d0 c3 c2 c1 c0 b3 b2 b1 b0 a3 a2 a1 a0 93 92 91 90 83 82 81 80|
// +-----------------------+-----------------------+-----------------------+-----------------------+
//
// The second step
mov (16) MSGPAYLOADB(0,0)<1> BUF_B(0,0)<1;4,4>
mov (16) MSGPAYLOADB(0,16)<1> BUF_B(0,16)<1;4,4>
mov (16) MSGPAYLOADB(1,0)<1> BUF_B(1,0)<1;4,4>
mov (16) MSGPAYLOADB(1,16)<1> BUF_B(1,16)<1;4,4>
// Transposed Y in 4x16 is ready for writting to dataport.
//***** Left MB is loaded the same as indicated by FieldModeCurrentMbFlag.
// Set message descriptor
(f0.0) if (1) ELSE_Y_16x4T
// Frame picture
mov (1) MSGDSC MSG_LEN(2)+DWBWMSGDSC+BI_DEST_Y:ud // Write 2 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_16x4T:
else (1) ENDIF_Y_16x4T
// Field picture
(f0.1) mov (1) MSGDSC MSG_LEN(2)+DWBWMSGDSC+ENMSGDSCBF+BI_DEST_Y:ud // Write 2 GRFs to DEST_Y bottom field
(-f0.1) mov (1) MSGDSC MSG_LEN(2)+DWBWMSGDSC+ENMSGDSCTF+BI_DEST_Y:ud // Write 2 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_16x4T:
send (8) null:ud MSGHDR MSGSRC<8;8,1>:ud DAPWRITE MSGDSC
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