ref: e50ea014c3d41652df34ed1325511803268e2ca7
dir: /vp9/encoder/x86/vp9_dct_sse2.asm/
; ; 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