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* Copyright © <2010>, Intel Corporation.
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*
* The above copyright notice and this permission notice (including the
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* of the Software.
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*
* This file was originally licensed under the following license
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
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*/
//////////////////////////////////////////////////////////////////////////////////////////
// Module name: Transpose_Y_4x16.asm
//
// Transpose a 4x16 internal planar to 16x4 internal planar block.
// The src block is 16x16. Right moft 4 columns are transposed.
//
//----------------------------------------------------------------------------------------
// Symbols need to be defined before including this module
//
// Source region is :ub
// SRC_YB: SRC_YB Base=rxx ElementSize=1 SrcRegion=REGION(16,1) Type=ub // 8 GRFs
//
// Temp buffer:
// BUF_B: BUF_B Base=rxx ElementSize=1 SrcRegion=REGION(16,1) Type=ub // 8 GRFs
//
//////////////////////////////////////////////////////////////////////////////////////////
#if defined(_DEBUG)
mov (1) EntrySignatureC:w 0xDDDB:w
#endif
// Transpose Y (4x16) right most 4 columns
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |1f 1e 1d 1c 1b 1a 19 18 17 16 15 14 13 12 11 10 0f 0e 0d 0c 0b 0a 09 08 07 06 05 04 03 02 01 00|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |3f 3e 3d 3c 3b 3a 39 38 37 36 35 34 33 32 31 30 2f 2e 2d 2c 2b 2a 29 28 27 26 25 24 23 22 21 20|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |5f 5e 5d 5c 5b 5a 59 58 57 56 55 54 53 52 51 50 4f 4e 4d 4c 4b 4a 49 48 47 46 45 44 43 42 41 40|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |7f 7e 7d 7c 7b 7a 79 78 77 76 75 74 73 72 71 70 6f 6e 6d 6c 6b 6a 69 68 67 66 65 64 63 62 61 60|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |9f 9e 9d 9c 9b 9a 99 98 97 96 95 94 93 92 91 90 8f 8e 8d 8c 8b 8a 89 88 87 86 85 84 83 82 81 80|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |bf be bd bc bb ba b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 af ae ad ac ab aa a9 a8 a7 a6 a5 a4 a3 a2 a1 a0|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |df de dd dc db da d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 cf ce cd cc cb ca c9 c8 c7 c6 c5 c4 c3 c2 c1 c0|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |ff fe fd fc fb fa f9 f8 f7 f6 f5 f4 f3 f2 f1 f0 ef ee ed ec eb ea e9 e8 e7 e6 e5 e4 e3 e2 e1 e0|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// The first step
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |7f 7e 7d 7c 6f 6e 6d 6c 5f 5e 5d 5c 4f 4e 4d 4c 3f 3e 3d 3c 2f 2e 2d 2c 1f 1e 1d 1c 0f 0e 0d 0c|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |ff fe fd fc ef ee ed ec df de dd dc cf ce cd cc bf be bd bc af ae ad ac 9f 9e 9d 9c 8f 8e 8d 8c|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// The second step
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |fd ed dd cd bd ad 9d 8d 7d 6d 5d 4d 3d 2d 1d 0d fc ec dc cc bc ac 9c 8c 7c 6c 5c 4c 3c 2c 1c 0c|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |ff ef df cf bf af 9f 8f 7f 6f 5f 4f 3f 2f 1f 0f fe ee de ce be ae 9e 8e 7e 6e 5e 4e 3e 2e 1e 0e|
// +-----------------------+-----------------------+-----------------------+-----------------------+
mov (16) LEFT_TEMP_B(0,0)<1> SRC_YB(0,12)<16;4,1> { NoDDClr }
mov (16) LEFT_TEMP_B(0,16)<1> SRC_YB(2,12)<16;4,1> { NoDDChk }
mov (16) LEFT_TEMP_B(1,0)<1> SRC_YB(4,12)<16;4,1> { NoDDClr }
mov (16) LEFT_TEMP_B(1,16)<1> SRC_YB(6,12)<16;4,1> { NoDDChk }
// The second step
mov (16) LEFT_TEMP_B(2,0)<1> LEFT_TEMP_B(0,0)<32;8,4> { NoDDClr }
mov (16) LEFT_TEMP_B(2,16)<1> LEFT_TEMP_B(0,1)<32;8,4> { NoDDChk }
mov (16) LEFT_TEMP_B(3,0)<1> LEFT_TEMP_B(0,2)<32;8,4> { NoDDClr }
mov (16) LEFT_TEMP_B(3,16)<1> LEFT_TEMP_B(0,3)<32;8,4> { NoDDChk }
// Y is now transposed. the result is in LEFT_TEMP_B(2) and LEFT_TEMP_B(3).