1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/*
* 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: Transpose_UV_2x8.asm
//
// Transpose UV 2x8 to 8x2 block (2x8U + 2x8V in NV12)
//
//----------------------------------------------------------------------------------------
// Symbols need to be defined before including this module
//
// Source region is :ub
// SRC_UW: SRC_UB Base=rxx ElementSize=2 SrcRegion=REGION(8,1) Type=uw // 4 GRFs
//
// Temp buffer:
// BUF_W: BUF_W Base=rxx ElementSize=2 SrcRegion=REGION(8,1) Type=uw // 4 GRFs
//
//////////////////////////////////////////////////////////////////////////////////////////
#if defined(_DEBUG)
mov (1) EntrySignatureC:w 0xDDDB:w
#endif
// Transpose UV (4x8), right most 2 columns in word
// Use BUF_W(0) as temp buf
// Src U 8x8 and V 8x8 are mixed. (each pix is specified as yx)
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |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|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |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|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |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|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |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|
// +-----------------------+-----------------------+-----------------------+-----------------------+
// First step (8) <1>:w <==== <8;2,1>:w
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |77 77 76 76 67 67 66 66 57 57 56 56 47 47 46 46 37 37 36 36 27 27 26 26 17 17 16 16 07 07 06 06|
// +-----------------------+-----------------------+-----------------------+-----------------------+
mov (8) LEFT_TEMP_W(0,0)<1> SRC_UW(0,6)<8;2,1> { NoDDClr }
mov (8) LEFT_TEMP_W(0,8)<1> SRC_UW(2,6)<8;2,1> { NoDDChk }
// Second step (16) <1>:w <==== <1;8,2>:w
// +-----------------------+-----------------------+-----------------------+-----------------------+
// |77 77 67 67 57 57 47 47 37 37 27 27 17 17 07 07 76 76 66 66 56 56 46 46 36 36 26 26 16 16 06 06|
// +-----------------------+-----------------------+-----------------------+-----------------------+
mov (16) LEFT_TEMP_W(1,0)<1> LEFT_TEMP_W(0,0)<1;8,2>
// UV are now transposed. the result is in BUF_W(1)
|
