ref: 4e3df2619af9044c89e6e48f2fca670f71476be8
dir: /codec/processing/src/arm/adaptive_quantization.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 #include "arm_arch_common_macro.S" .macro SQR_ADD_16BYTES arg0, arg1, arg2 vmull.u8 q3, \arg0, \arg0 vmull.u8 q8, \arg1, \arg1 vpadal.u16 \arg2, q3 vpadal.u16 \arg2, q8 .endm WELS_ASM_FUNC_BEGIN SampleVariance16x16_neon stmdb sp!, {r4} vld1.8 {q15}, [r0], r1 //save the ref data (16bytes) vld1.8 {q14}, [r2], r3 //save the src data (16bytes) vabd.u8 q13, q14, q15 vmull.u8 q12, d27, d27 vmull.u8 q11, d26, d26 vaddl.u16 q12, d24, d25 vpadal.u16 q12, q11 //sqr vaddl.u8 q13, d26, d27 //sum vaddl.u8 q10, d28, d29 //sum_cur vmull.u8 q9, d29, d29 vmull.u8 q8, d28, d28 vaddl.u16 q9, d18, d19 //sqr_cur vpadal.u16 q9, q8 mov r4, #15 pixel_var_16x16_loop0: vld1.8 {q0}, [r0], r1 //save the ref data (16bytes) vld1.8 {q1}, [r2], r3 //save the src data (16bytes) vabd.u8 q2, q0, q1 //q10 save sum_cur vpadal.u8 q10, q1 //q12 save sqr SQR_ADD_16BYTES d4, d5, q12 //q13 save sum vpadal.u8 q13, q2 subs r4, #1 //q9 save sqr_cur SQR_ADD_16BYTES d2, d3, q9 bne pixel_var_16x16_loop0 vadd.u16 d0, d26, d27 //sum vadd.u16 d1, d20, d21 //sum_cur vpaddl.u16 q0, q0 vadd.u32 d2, d24, d25 //sqr vadd.u32 d3, d18, d19 //sqr_cur vpadd.u32 d0, d0, d1 vpadd.u32 d1, d2, d3 ldr r4, [sp, #4] vshr.u32 q0, q0, #8 vmul.u32 d0, d0 vsub.u32 d0, d1, d0 vmovl.u32 q0, d0 vst2.16 {d0[0], d1[0]}, [r4] ldmia sp!, {r4} WELS_ASM_FUNC_END #endif