ref: c511746e0b8b186bb9ea7b1a933c5f36eb268570
dir: /codec/processing/src/arm64/pixel_sad_aarch64_neon.S/
/*! * \copy * Copyright (c) 2013, Cisco Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_NEON_AARCH64 #include "arm_arch64_common_macro.S" //int32_t WelsProcessingSampleSad8x8_AArch64_neon (uint8_t*, int32_t, uint8_t*, int32_t); WELS_ASM_AARCH64_FUNC_BEGIN WelsProcessingSampleSad8x8_AArch64_neon SIGN_EXTENSION x1, w1 SIGN_EXTENSION x3, w3 ld1 {v0.8b}, [x0], x1 ld1 {v1.8b}, [x2], x3 uabdl v2.8h, v0.8b, v1.8b .rept 7 ld1 {v0.8b}, [x0], x1 ld1 {v1.8b}, [x2], x3 uabal v2.8h, v0.8b, v1.8b .endr saddlv s2, v2.8h fmov w0, s2 WELS_ASM_AARCH64_FUNC_END #endif