2 * Copyright © <2010>, Intel Corporation.
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4 * This program is licensed under the terms and conditions of the
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5 * Eclipse Public License (EPL), version 1.0. The full text of the EPL is at
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6 * http://www.opensource.org/licenses/eclipse-1.0.php.
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9 // Module name: save_Top_UV_8x2.asm
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11 // Save UV 8x2 block (8x2U + 8x2V in NV12)
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13 //----------------------------------------------------------------
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14 // Symbols need to be defined before including this module
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16 // Source region in :ud
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17 // SRC_UD: SRC_UD Base=rxx ElementSize=4 SrcRegion=REGION(8,1) Type=ud // 1 GRF
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19 // Binding table index:
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20 // BI_DEST_UV: Binding table index of UV surface (NV12)
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22 //----------------------------------------------------------------
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24 #if defined(_DEBUG)
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25 mov (1) EntrySignatureC:w 0xDDD5:w
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29 and.nz.f0.1 (1) NULLREGW BitFields:w BotFieldFlag:w // Get bottom field flag
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32 mov (1) MSGSRC.0:ud ORIX_TOP:w { NoDDClr } // Block origin
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33 asr (1) MSGSRC.1:ud ORIY_TOP:w 1:w { NoDDClr, NoDDChk } // NV12 U+V block origin y = half of Y comp
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34 mov (1) MSGSRC.2:ud 0x0001000F:ud { NoDDChk } // NV12 U+V block width and height (16x2)
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36 mov (8) MSGPAYLOADD(0,0)<1> TOP_MB_UD(0)
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39 #if defined(_PROGRESSIVE)
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40 mov (1) MSGDSC MSG_LEN(1)+DWBWMSGDSC_WC+BI_DEST_UV:ud
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41 // send (8) NULLREG MSGHDR MSGSRC<8;8,1>:ud DWBWMSGDSC+0x00100000+BI_DEST_UV
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46 (f0.1) mov (1) MSGDSC MSG_LEN(1)+DWBWMSGDSC_WC+ENMSGDSCBF+BI_DEST_UV:ud // Write 1 GRF to DEST_Y bottom field
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47 (-f0.1) mov (1) MSGDSC MSG_LEN(1)+DWBWMSGDSC_WC+ENMSGDSCTF+BI_DEST_UV:ud // Write 1 GRF to DEST_Y top field
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51 send (8) WritebackResponse(0)<1> MSGHDR MSGSRC<8;8,1>:ud DAPWRITE MSGDSC
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52 // End of save_Top_UV_8x2.asm
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