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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 | ////////////////////////////////////////////////////////////////////////////////////////// |
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| 10 | // Module name: TransposeNV12_4x16.asm |
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| 11 | // |
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| 12 | // Transpose a 4x16 internal planar to 16x4 internal planar block |
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| 13 | // |
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| 14 | //---------------------------------------------------------------------------------------- |
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| 15 | // Symbols need to be defined before including this module |
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| 16 | // |
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| 17 | // Source region is :ub |
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| 18 | // SRC_YB: SRC_YB Base=rxx ElementSize=1 SrcRegion=REGION(16,1) Type=ub // 8 GRFs |
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| 19 | // SRC_UW: SRC_UB Base=rxx ElementSize=2 SrcRegion=REGION(8,1) Type=uw // 4 GRFs |
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| 20 | // |
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| 21 | // Temp buffer: |
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| 22 | // BUF_B: BUF_B Base=rxx ElementSize=1 SrcRegion=REGION(16,1) Type=ub // 8 GRFs |
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| 23 | // BUF_W: BUF_W Base=rxx ElementSize=2 SrcRegion=REGION(8,1) Type=uw // 4 GRFs |
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| 24 | // |
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| 25 | ////////////////////////////////////////////////////////////////////////////////////////// |
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| 26 | |||
| 27 | #if defined(_DEBUG) |
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| 28 | mov (1) EntrySignatureC:w 0xDDDB:w |
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| 29 | #endif |
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| 30 | |||
| 31 | // Transpose Y (4x16) right most 4 columns |
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| 32 | |||
| 33 | // The first step |
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| 34 | mov (16) BUF_B(0,0)<1> SRC_YB(0,0)<16;4,1> // Read 2 rows, write 1 row |
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| 35 | mov (16) BUF_B(0,16)<1> SRC_YB(2,0)<16;4,1> |
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| 36 | mov (16) BUF_B(1,0)<1> SRC_YB(4,0)<16;4,1> |
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| 37 | mov (16) BUF_B(1,16)<1> SRC_YB(6,0)<16;4,1> |
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| 38 | |||
| 39 | // The second step |
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| 40 | mov (16) BUF_B(2,0)<1> BUF_B(0,0)<32;8,4> // Read 2 rows, write 1 row |
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| 41 | mov (16) BUF_B(2,16)<1> BUF_B(0,1)<32;8,4> |
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| 42 | mov (16) BUF_B(3,0)<1> BUF_B(0,2)<32;8,4> |
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| 43 | mov (16) BUF_B(3,16)<1> BUF_B(0,3)<32;8,4> |
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| 44 | |||
| 45 | // Y is now transposed. the result is in BUF_B(2) and BUF_B(3). |
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| 46 | |||
| 47 | |||
| 48 | |||
| 49 | // Transpose UV (4x8), right most 2 columns in word |
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| 50 | // Use BUF_W(0) as temp buf |
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| 51 | |||
| 52 | // Src U 8x8 and V 8x8 are mixed. (each pix is specified as yx) |
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| 53 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 54 | // |17 17 16 16 15 15 14 14 13 13 12 12 11 11 10 10 07 07 06 06 05 05 04 04 03 03 02 02 01 01 00 00| |
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| 55 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 56 | // |37 37 36 36 35 35 34 34 33 33 32 32 31 31 30 30 27 27 26 26 25 25 24 24 23 23 22 22 21 21 20 20| |
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| 57 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 58 | // |57 57 56 56 55 55 54 54 53 53 52 52 51 51 50 50 47 47 46 46 45 45 44 44 43 43 42 42 41 41 40 40| |
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| 59 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 60 | // |77 77 76 76 75 75 74 74 73 73 72 72 71 71 70 70 67 67 66 66 65 65 64 64 63 63 62 62 61 61 60 60| |
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| 61 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 62 | |||
| 63 | // First step (8) <1>:w <==== <8;2,1>:w |
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| 64 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 65 | // |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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| 66 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 67 | mov (8) BUF_W(0,0)<1> SRC_UW(0,0)<8;2,1> |
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| 68 | mov (8) BUF_W(0,8)<1> SRC_UW(2,0)<8;2,1> |
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| 69 | |||
| 70 | // Second step (16) <1>:w <==== <1;8,2>:w |
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| 71 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 72 | // |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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| 73 | // +-----------------------+-----------------------+-----------------------+-----------------------+ |
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| 74 | mov (16) BUF_W(1,0)<1> BUF_W(0,0)<1;8,2> |
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| 75 | |||
| 76 | // UV are now transposed. the result is in BUF_W(1). |
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| 77 | |||
| 78 | |||
| 79 | |||
| 80 | //The first step |
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| 81 | //mov (16) BUF_B(0,0)<1> SRC_UW(0,0)<8;2,1> // Read 2 rows, write 1 row |
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| 82 | // The second step |
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| 83 | //mov (8) SRC_UB(4,0)<1> BUF_B(0,0)<16;8,2> // Read 1 row, write 1 row |
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| 84 | //mov (8) SRC_UB(4,8)<1> BUF_B(0,1)<16;8,2> // Read 1 row, write 1 row |
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| 85 | |||
| 86 | // Transpose V (8x8), right most 2 columns |
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| 87 | // The first step |
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| 88 | //mov (16) BUF_B(0,0)<1> SRC_VB(0,1)<8;2,1> // Read 2 rows, write 1 row |
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| 89 | // The second step |
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| 90 | //mov (8) SRC_UB(4,16)<1> BUF_B(0,0)<16;8,2> // Read 1 row, write 1 row |
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| 91 | //mov (8) SRC_UB(4,24)<1> BUF_B(0,1)<16;8,2> // Read 1 row, write 1 row |
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| 92 | |||
| 93 | // U and V are now transposed. the result is in BUF_B(4). |
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| 94 |