| ; |
| ; Copyright (c) 2016 The WebM project authors. All Rights Reserved. |
| ; |
| ; Use of this source code is governed by a BSD-style license |
| ; that can be found in the LICENSE file in the root of the source |
| ; tree. An additional intellectual property rights grant can be found |
| ; in the file PATENTS. All contributing project authors may |
| ; be found in the AUTHORS file in the root of the source tree. |
| ; |
| |
| %define private_prefix vp9 |
| |
| %include "third_party/x86inc/x86inc.asm" |
| %include "vpx_dsp/x86/bitdepth_conversion_sse2.asm" |
| |
| SECTION .text |
| |
| %macro TRANSFORM_COLS 0 |
| paddw m0, m1 |
| movq m4, m0 |
| psubw m3, m2 |
| psubw m4, m3 |
| psraw m4, 1 |
| movq m5, m4 |
| psubw m5, m1 ;b1 |
| psubw m4, m2 ;c1 |
| psubw m0, m4 |
| paddw m3, m5 |
| ; m0 a0 |
| SWAP 1, 4 ; m1 c1 |
| SWAP 2, 3 ; m2 d1 |
| SWAP 3, 5 ; m3 b1 |
| %endmacro |
| |
| %macro TRANSPOSE_4X4 0 |
| ; 00 01 02 03 |
| ; 10 11 12 13 |
| ; 20 21 22 23 |
| ; 30 31 32 33 |
| punpcklwd m0, m1 ; 00 10 01 11 02 12 03 13 |
| punpcklwd m2, m3 ; 20 30 21 31 22 32 23 33 |
| mova m1, m0 |
| punpckldq m0, m2 ; 00 10 20 30 01 11 21 31 |
| punpckhdq m1, m2 ; 02 12 22 32 03 13 23 33 |
| %endmacro |
| |
| INIT_XMM sse2 |
| cglobal fwht4x4, 3, 4, 8, input, output, stride |
| lea r3q, [inputq + strideq*4] |
| movq m0, [inputq] ;a1 |
| movq m1, [inputq + strideq*2] ;b1 |
| movq m2, [r3q] ;c1 |
| movq m3, [r3q + strideq*2] ;d1 |
| |
| TRANSFORM_COLS |
| TRANSPOSE_4X4 |
| SWAP 1, 2 |
| psrldq m1, m0, 8 |
| psrldq m3, m2, 8 |
| TRANSFORM_COLS |
| TRANSPOSE_4X4 |
| |
| psllw m0, 2 |
| psllw m1, 2 |
| |
| STORE_TRAN_LOW 0, outputq, 0, 2, 3 |
| STORE_TRAN_LOW 1, outputq, 8, 2, 3 |
| |
| RET |
