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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5361 | serge | 1 | /* |
| 2 | * Copyright © <2010>, Intel Corporation. |
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| 3 | * |
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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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| 7 | * |
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| 8 | */ |
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| 9 | // Module name: save_Left_UV_8x2T.asm |
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| 10 | // |
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| 11 | // Transpose 8x2 to 2x8 UV data and write to memory |
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| 12 | // |
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| 13 | //---------------------------------------------------------------- |
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| 14 | // Symbols need to be defined before including this module |
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| 15 | // |
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| 16 | // Left MB region: |
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| 17 | // PREV_MB_UW: Base=ryy ElementSize=2 SrcRegion=REGION(8,1) Type=uw |
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| 18 | |||
| 19 | // Binding table index: |
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| 20 | // BI_SRC_UV: Binding table index of UV surface (NV12) |
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| 21 | // |
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| 22 | // Temp buffer: |
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| 23 | // BUF_W: BUF_W Base=rxx ElementSize=1 SrcRegion=REGION(8,1) Type=uw |
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| 24 | // |
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| 25 | // |
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| 26 | #if defined(_DEBUG) |
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| 27 | mov (1) EntrySignatureC:w 0xDDD6:w |
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| 28 | #endif |
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| 29 | |||
| 30 | and.z.f0.0 (1) null:w r[ECM_AddrReg, BitFlags]:ub FieldModeCurrentMbFlag:w |
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| 31 | |||
| 32 | and.nz.f0.1 (1) NULLREGW BitFields:w BotFieldFlag:w |
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| 33 | |||
| 34 | // Transpose U/V, save them to MRFs in NV12 format |
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| 35 | mov (1) MSGSRC.0:ud ORIX_LEFT:w { NoDDClr } // Block origin |
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| 36 | asr (1) MSGSRC.1:ud ORIY_LEFT:w 1:w { NoDDClr, NoDDChk } // NV12 U+V block origin y = half of Y comp |
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| 37 | mov (1) MSGSRC.2:ud 0x00070003:ud { NoDDChk } // NV12 U+V block width and height (4x8) |
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| 38 | |||
| 39 | |||
| 40 | // 16x2 UV src in GRF (each pix is specified as yx) |
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| 41 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 42 | // |71 71 61 61 51 51 41 41 31 31 21 21 11 11 01 01 70 70 60 60 50 50 40 40 30 30 20 20 10 10 00 00| |
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| 43 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 44 | // |
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| 45 | // First step (8) <1> <=== <8;4,1>:w |
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| 46 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 47 | // |71 71 61 61 51 51 41 41 70 70 60 60 50 50 40 40 31 31 21 21 11 11 01 01 30 30 20 20 10 10 00 00| |
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| 48 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 49 | mov (8) BUF_W(0,0)<1> PREV_MB_UW(0,0)<8;4,1> { NoDDClr } |
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| 50 | mov (8) BUF_W(0,8)<1> PREV_MB_UW(0,4)<8;4,1> { NoDDChk } |
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| 51 | |||
| 52 | // Second step (8) <1> <=== <1;2,4> |
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| 53 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 54 | // |71 71 70 70 61 61 60 60 51 51 50 50 41 41 40 40 31 31 30 30 21 21 20 20 11 11 10 10 01 01 00 00| |
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| 55 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 56 | mov (8) MSGPAYLOADW(0,0)<1> BUF_W(0,0)<1;2,4> |
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| 57 | mov (8) MSGPAYLOADW(0,8)<1> BUF_W(0,8)<1;2,4> |
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| 58 | |||
| 59 | // Transposed U+V in NV12 in 4x8 is ready for writting to dataport. |
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| 60 | |||
| 61 | // Set message descriptor |
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| 62 | |||
| 63 | (f0.0) if (1) ELSE_UV_8X2T |
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| 64 | |||
| 65 | // Frame picture |
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| 66 | mov (1) MSGDSC MSG_LEN(1)+DWBWMSGDSC+BI_DEST_UV:ud // Write 1 GRF to DEST_UV |
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| 67 | |||
| 68 | (f0.1) add (1) MSGSRC.1:d MSGSRC.1:d 8:w // Add vertical offset 8 for bot MB in MBAFF mode |
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| 69 | |||
| 70 | ELSE_UV_8X2T: |
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| 71 | else (1) ENDIF_UV_8X2T |
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| 72 | |||
| 73 | // Field picture |
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| 74 | (f0.1) mov (1) MSGDSC MSG_LEN(1)+DWBWMSGDSC+ENMSGDSCBF+BI_DEST_UV:ud // Write 1 GRF to DEST_UV bottom field |
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| 75 | (-f0.1) mov (1) MSGDSC MSG_LEN(1)+DWBWMSGDSC+ENMSGDSCTF+BI_DEST_UV:ud // Write 1 GRF to DEST_UV top field |
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| 76 | |||
| 77 | asr (1) MSGSRC.1:d MSGSRC.1:d 1:w // Reduce y by half in field access mode |
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| 78 | |||
| 79 | endif |
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| 80 | ENDIF_UV_8X2T: |
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| 81 | |||
| 82 | send (8) null:ud MSGHDR MSGSRC<8;8,1>:ud DAPWRITE MSGDSC |