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689 lines
24 KiB
ArmAsm
689 lines
24 KiB
ArmAsm
//******************************************************************************
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//*
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//* Copyright (C) 2015 The Android Open Source Project
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//*
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//* Licensed under the Apache License, Version 2.0 (the "License");
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//* you may not use this file except in compliance with the License.
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//* You may obtain a copy of the License at:
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//*
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//* http://www.apache.org/licenses/LICENSE-2.0
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//*
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//* Unless required by applicable law or agreed to in writing, software
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//* distributed under the License is distributed on an "AS IS" BASIS,
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//* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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//* See the License for the specific language governing permissions and
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//* limitations under the License.
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//*
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//*****************************************************************************
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//* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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//*/
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///*****************************************************************************/
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///**
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//*******************************************************************************
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//* @file
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//* ih264_resi_trans_quant_av8.c
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//*
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//* @brief
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//* contains function definitions for residual and forward trans
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//*
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//* @author
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//* ittiam
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//*
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//* @par list of functions:
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//* ih264_resi_trans_quant_4x4_av8
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//* ih264_resi_trans_quant_8x8_av8
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//* ih264_resi_trans_quant_chroma_4x4_av8
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//* @remarks
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//* none
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//*
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//*******************************************************************************
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.include "ih264_neon_macros.s"
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.text
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.p2align 2
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//*****************************************************************************
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//*
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//* function name : ih264_resi_trans_quant_4x4
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//* description : this function does cf4 of h264
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//*
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// values returned : none
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//
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// register usage :
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// stack usage : 64 bytes
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// cycles :
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// interruptiaility : interruptable
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//
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// known limitations
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// \assumptions :
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//
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// revision history :
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// dd mm yyyy author(s) changes
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// 1 12 2013 100633 first version
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// 20 1 2014 100633 changes the api, optimization
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//
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//*****************************************************************************
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.global ih264_resi_trans_quant_4x4_av8
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ih264_resi_trans_quant_4x4_av8:
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push_v_regs
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//x0 :pointer to src buffer
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//x1 :pointer to pred buffer
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//x2 :pointer to dst buffer
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//w3 :source stride
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//w4 :pred stride
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//w5 :scale matirx,
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//x6 :threshold matrix
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//w7 :qbits
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//w8 :round factor
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//x9 :nnz
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//x10 :pointer to store non quantized dc value
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sxtw x3, w3
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sxtw x4, w4
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ldr w8, [sp, #64] //load round factor
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ldr x10, [sp, #80] //load addres for non quant val
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neg w7, w7 //negate the qbit value for usiing lsl
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ldr x9, [sp, #72]
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//------------fucntion loading done----------------;
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ld1 {v30.8b}, [x0], x3 //load first 8 pix src row 1
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ld1 {v31.8b}, [x1], x4 //load first 8 pix pred row 1
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ld1 {v28.8b}, [x0], x3 //load first 8 pix src row 2
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ld1 {v29.8b}, [x1], x4 //load first 8 pix pred row 2
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ld1 {v26.8b}, [x0], x3 //load first 8 pix src row 3
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ld1 {v27.8b}, [x1], x4 //load first 8 pix pred row 3
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ld1 {v24.8b}, [x0] //load first 8 pix src row 4
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ld1 {v25.8b}, [x1] //load first 8 pix pred row 4
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usubl v0.8h, v30.8b, v31.8b //find residue row 1
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usubl v2.8h, v28.8b, v29.8b //find residue row 2
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usubl v4.8h, v26.8b, v27.8b //find residue row 3
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usubl v6.8h, v24.8b, v25.8b //find residue row 4
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trn1 v1.4h, v0.4h, v2.4h
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trn2 v3.4h, v0.4h, v2.4h //t12
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trn1 v5.4h, v4.4h, v6.4h
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trn2 v7.4h, v4.4h, v6.4h //t23
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trn1 v0.2s, v1.2s, v5.2s
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trn2 v4.2s, v1.2s, v5.2s //t13
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trn1 v2.2s, v3.2s, v7.2s
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trn2 v6.2s, v3.2s, v7.2s //t14
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add v8.4h, v0.4h, v6.4h //x0 = x4+x7
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add v9.4h, v2.4h, v4.4h //x1 = x5+x6
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sub v10.4h, v2.4h, v4.4h //x2 = x5-x6
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sub v11.4h, v0.4h, v6.4h //x3 = x4-x7
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shl v12.4h, v10.4h, #1 //u_shift(x2,1,shft)
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shl v13.4h, v11.4h, #1 //u_shift(x3,1,shft)
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add v14.4h, v8.4h, v9.4h //x4 = x0 + x1;
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sub v16.4h, v8.4h, v9.4h //x6 = x0 - x1;
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add v15.4h, v13.4h, v10.4h //x5 = u_shift(x3,1,shft) + x2;
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sub v17.4h, v11.4h, v12.4h //x7 = x3 - u_shift(x2,1,shft);
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//taking transpose again so as to make do vert transform
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trn1 v0.4h, v14.4h, v15.4h
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trn2 v1.4h, v14.4h, v15.4h //t12
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trn1 v2.4h, v16.4h, v17.4h
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trn2 v3.4h, v16.4h, v17.4h //t23
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trn1 v14.2s, v0.2s, v2.2s
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trn2 v16.2s, v0.2s, v2.2s //t13
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trn1 v15.2s, v1.2s, v3.2s
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trn2 v17.2s, v1.2s, v3.2s //t24
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//let us do vertical transform
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//same code as horiz
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add v18.4h, v14.4h , v17.4h //x0 = x4+x7
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add v19.4h, v15.4h , v16.4h //x1 = x5+x6
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sub v20.4h, v15.4h , v16.4h //x2 = x5-x6
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sub v21.4h, v14.4h , v17.4h //x3 = x4-x7
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shl v22.4h, v20.4h, #1 //u_shift(x2,1,shft)
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shl v23.4h, v21.4h, #1 //u_shift(x3,1,shft)
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dup v8.4s, w8 //load rounding value row 1
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add v24.4h, v18.4h , v19.4h //x5 = x0 + x1;
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sub v26.4h, v18.4h , v19.4h //x7 = x0 - x1;
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add v25.4h, v23.4h , v20.4h //x6 = u_shift(x3,1,shft) + x2;
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sub v27.4h, v21.4h , v22.4h //x8 = x3 - u_shift(x2,1,shft);
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dup v23.4s, w8 //load round factor values
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st1 {v24.h}[0], [x10] //store the dc value to alternate dc sddress
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//core tranform is done for 4x8 block 1
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ld1 {v28.4h-v31.4h}, [x5] //load the scaling values
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abs v0.4h, v24.4h //abs val of row 1
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abs v1.4h, v25.4h //abs val of row 2
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abs v2.4h, v26.4h //abs val of row 3
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abs v3.4h, v27.4h //abs val of row 4
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cmgt v4.4h, v24.4h, #0
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cmgt v5.4h, v25.4h, #0
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cmgt v6.4h, v26.4h, #0
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cmgt v7.4h, v27.4h, #0
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smull v0.4s, v0.4h, v28.4h //multiply and add row 1
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smull v1.4s, v1.4h, v29.4h //multiply and add row 2
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smull v2.4s, v2.4h, v30.4h //multiply and add row 3
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smull v3.4s, v3.4h, v31.4h //multiply and add row 4
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add v20.4s, v0.4s, v23.4s
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add v21.4s, v1.4s, v23.4s
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add v22.4s, v2.4s, v23.4s
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add v23.4s, v3.4s, v23.4s
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dup v24.4s, w7
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sshl v20.4s, v20.4s, v24.4s //shift row 1
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sshl v21.4s, v21.4s, v24.4s //shift row 2
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sshl v22.4s, v22.4s, v24.4s //shift row 3
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sshl v23.4s, v23.4s, v24.4s //shift row 4
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xtn v20.4h, v20.4s //narrow row 1
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xtn v21.4h, v21.4s //narrow row 2
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xtn v22.4h, v22.4s //narrow row 3
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xtn v23.4h, v23.4s //narrow row 4
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neg v24.8h, v20.8h //get negative
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neg v25.8h, v21.8h //get negative
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neg v26.8h, v22.8h //get negative
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neg v27.8h, v23.8h //get negative
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//compare with zero for computng nnz
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cmeq v0.4h, v20.4h, #0
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cmeq v1.4h, v21.4h, #0
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cmeq v2.4h, v22.4h, #0
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cmeq v3.4h, v23.4h, #0
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bsl v4.8b, v20.8b, v24.8b //restore sign of row 1 and 2
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bsl v5.8b, v21.8b, v25.8b //restore sign of row 3 and 4
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bsl v6.8b, v22.8b, v26.8b //restore sign of row 1 and 2
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bsl v7.8b, v23.8b, v27.8b //restore sign of row 3 and 4
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//narrow the comaprison result
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mov v0.d[1], v2.d[0]
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mov v1.d[1], v3.d[0]
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xtn v0.8b, v0.8h
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xtn v1.8b, v1.8h
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ushr v0.8b, v0.8b, #7 //i reduce comaparison bit to a signle bit row 1 and 2 blk 1 and 2 [ keep the value for later use ]
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ushr v1.8b, v1.8b, #7 //i reduce comaparison bit to a signle bit row 1 and 2 blk 1 and 2 [ keep the value for later use ]
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add v0.8b, v0.8b, v1.8b //i pair add nnz 1
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addp v0.8b, v0.8b, v0.8b //i pair add nnz 1
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addp v0.8b, v0.8b, v0.8b //i pair add nnz 1
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addp v0.8b, v0.8b, v0.8b //i pair add nnz 1
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st1 {v4.4h-v7.4h}, [x2] //store blk
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movi v25.8b, #16 //get max nnz
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sub v26.8b, v25.8b , v0.8b //invert current nnz
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st1 {v26.b}[0], [x9] //write nnz
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pop_v_regs
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ret
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//*****************************************************************************
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//*
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//* function name : ih264_resi_trans_quant_chroma_4x4
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//* description : this function does residue calculation, forward transform
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//* and quantization for 4x4 chroma block.
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//*
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// values returned : none
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//
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// register usage :
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// stack usage : 64 bytes
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// cycles :
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// interruptiaility : interruptable
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//
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// known limitations
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// \assumptions :
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//
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// revision history :
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// dd mm yyyy author(s) changes
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// 11 2 2015 100664 first version
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// 25 2 2015 100633 first av8 version
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//*****************************************************************************
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.global ih264_resi_trans_quant_chroma_4x4_av8
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ih264_resi_trans_quant_chroma_4x4_av8:
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push_v_regs
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//x0 :pointer to src buffer
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//x1 :pointer to pred buffer
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//x2 :pointer to dst buffer
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//w3 :source stride
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//w4 :pred stride
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//x5 :scale matirx,
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//x6 :threshold matrix
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//w7 :qbits
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//w8 :round factor
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//x9 :nnz
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//x10 :pointer to store non quantized dc value
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sxtw x3, w3
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sxtw x4, w4
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ldr w8, [sp, #64] //load round factor
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ldr x10, [sp, #80] //load addres for non quant val
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neg w7, w7 //negate the qbit value for usiing lsl
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ldr x9, [sp, #72]
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//------------fucntion loading done----------------;
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ld1 {v30.8b}, [x0], x3 //load first 8 pix src row 1
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ld1 {v31.8b}, [x1], x4 //load first 8 pix pred row 1
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ld1 {v28.8b}, [x0], x3 //load first 8 pix src row 2
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ld1 {v29.8b}, [x1], x4 //load first 8 pix pred row 2
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ld1 {v26.8b}, [x0], x3 //load first 8 pix src row 3
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ld1 {v27.8b}, [x1], x4 //load first 8 pix pred row 3
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ld1 {v24.8b}, [x0] //load first 8 pix src row 4
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ld1 {v25.8b}, [x1] //load first 8 pix pred row 4
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//deinterleave the loaded values
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uzp1 v30.8b, v30.8b, v30.8b
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uzp1 v31.8b, v31.8b, v31.8b
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uzp1 v28.8b, v28.8b, v28.8b
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uzp1 v29.8b, v29.8b, v29.8b
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uzp1 v26.8b, v26.8b, v26.8b
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uzp1 v27.8b, v27.8b, v27.8b
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uzp1 v24.8b, v24.8b, v24.8b
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uzp1 v25.8b, v25.8b, v25.8b
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//this deinterleaving is the only differnece betweenchrom and luma fucntions
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usubl v0.8h, v30.8b, v31.8b //find residue row 1
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usubl v2.8h, v28.8b, v29.8b //find residue row 2
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usubl v4.8h, v26.8b, v27.8b //find residue row 3
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usubl v6.8h, v24.8b, v25.8b //find residue row 4
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trn1 v1.4h, v0.4h, v2.4h
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trn2 v3.4h, v0.4h, v2.4h //t12
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trn1 v5.4h, v4.4h, v6.4h
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trn2 v7.4h, v4.4h, v6.4h //t23
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trn1 v0.2s, v1.2s, v5.2s
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trn2 v4.2s, v1.2s, v5.2s //t13
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trn1 v2.2s, v3.2s, v7.2s
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trn2 v6.2s, v3.2s, v7.2s //t14
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add v8.4h, v0.4h, v6.4h //x0 = x4+x7
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add v9.4h, v2.4h, v4.4h //x1 = x5+x6
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sub v10.4h, v2.4h, v4.4h //x2 = x5-x6
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sub v11.4h, v0.4h, v6.4h //x3 = x4-x7
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shl v12.4h, v10.4h, #1 //u_shift(x2,1,shft)
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shl v13.4h, v11.4h, #1 //u_shift(x3,1,shft)
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add v14.4h, v8.4h, v9.4h //x4 = x0 + x1;
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sub v16.4h, v8.4h, v9.4h //x6 = x0 - x1;
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add v15.4h, v13.4h, v10.4h //x5 = u_shift(x3,1,shft) + x2;
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sub v17.4h, v11.4h, v12.4h //x7 = x3 - u_shift(x2,1,shft);
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//taking transpose again so as to make do vert transform
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trn1 v0.4h, v14.4h, v15.4h
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trn2 v1.4h, v14.4h, v15.4h //t12
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trn1 v2.4h, v16.4h, v17.4h
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trn2 v3.4h, v16.4h, v17.4h //t23
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trn1 v14.2s, v0.2s, v2.2s
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trn2 v16.2s, v0.2s, v2.2s //t13
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trn1 v15.2s, v1.2s, v3.2s
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trn2 v17.2s, v1.2s, v3.2s //t24
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//let us do vertical transform
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//same code as horiz
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add v18.4h, v14.4h , v17.4h //x0 = x4+x7
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add v19.4h, v15.4h , v16.4h //x1 = x5+x6
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sub v20.4h, v15.4h , v16.4h //x2 = x5-x6
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sub v21.4h, v14.4h , v17.4h //x3 = x4-x7
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shl v22.4h, v20.4h, #1 //u_shift(x2,1,shft)
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shl v23.4h, v21.4h, #1 //u_shift(x3,1,shft)
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dup v8.4s, w8 //load rounding value row 1
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add v24.4h, v18.4h , v19.4h //x5 = x0 + x1;
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sub v26.4h, v18.4h , v19.4h //x7 = x0 - x1;
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add v25.4h, v23.4h , v20.4h //x6 = u_shift(x3,1,shft) + x2;
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sub v27.4h, v21.4h , v22.4h //x8 = x3 - u_shift(x2,1,shft);
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dup v23.4s, w8 //load round factor values
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st1 {v24.h}[0], [x10] //store the dc value to alternate dc sddress
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//core tranform is done for 4x8 block 1
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ld1 {v28.4h-v31.4h}, [x5] //load the scaling values
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abs v0.4h, v24.4h //abs val of row 1
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abs v1.4h, v25.4h //abs val of row 2
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abs v2.4h, v26.4h //abs val of row 3
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abs v3.4h, v27.4h //abs val of row 4
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cmgt v4.4h, v24.4h, #0
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cmgt v5.4h, v25.4h, #0
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cmgt v6.4h, v26.4h, #0
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cmgt v7.4h, v27.4h, #0
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smull v0.4s, v0.4h, v28.4h //multiply and add row 1
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smull v1.4s, v1.4h, v29.4h //multiply and add row 2
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smull v2.4s, v2.4h, v30.4h //multiply and add row 3
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smull v3.4s, v3.4h, v31.4h //multiply and add row 4
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add v20.4s, v0.4s, v23.4s
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add v21.4s, v1.4s, v23.4s
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add v22.4s, v2.4s, v23.4s
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|
add v23.4s, v3.4s, v23.4s
|
|
|
|
dup v24.4s, w7
|
|
|
|
sshl v20.4s, v20.4s, v24.4s //shift row 1
|
|
sshl v21.4s, v21.4s, v24.4s //shift row 2
|
|
sshl v22.4s, v22.4s, v24.4s //shift row 3
|
|
sshl v23.4s, v23.4s, v24.4s //shift row 4
|
|
|
|
xtn v20.4h, v20.4s //narrow row 1
|
|
xtn v21.4h, v21.4s //narrow row 2
|
|
xtn v22.4h, v22.4s //narrow row 3
|
|
xtn v23.4h, v23.4s //narrow row 4
|
|
|
|
neg v24.8h, v20.8h //get negative
|
|
neg v25.8h, v21.8h //get negative
|
|
neg v26.8h, v22.8h //get negative
|
|
neg v27.8h, v23.8h //get negative
|
|
|
|
//compare with zero for computng nnz
|
|
cmeq v0.4h, v20.4h, #0
|
|
cmeq v1.4h, v21.4h, #0
|
|
cmeq v2.4h, v22.4h, #0
|
|
cmeq v3.4h, v23.4h, #0
|
|
|
|
bsl v4.8b, v20.8b, v24.8b //restore sign of row 1 and 2
|
|
bsl v5.8b, v21.8b, v25.8b //restore sign of row 3 and 4
|
|
bsl v6.8b, v22.8b, v26.8b //restore sign of row 1 and 2
|
|
bsl v7.8b, v23.8b, v27.8b //restore sign of row 3 and 4
|
|
|
|
//narrow the comaprison result
|
|
mov v0.d[1], v2.d[0]
|
|
mov v1.d[1], v3.d[0]
|
|
|
|
xtn v0.8b, v0.8h
|
|
xtn v1.8b, v1.8h
|
|
|
|
ushr v0.8b, v0.8b, #7 //i reduce comaparison bit to a signle bit row 1 and 2 blk 1 and 2 [ keep the value for later use ]
|
|
ushr v1.8b, v1.8b, #7 //i reduce comaparison bit to a signle bit row 1 and 2 blk 1 and 2 [ keep the value for later use ]
|
|
|
|
add v0.8b, v0.8b, v1.8b //i pair add nnz 1
|
|
addp v0.8b, v0.8b, v0.8b //i pair add nnz 1
|
|
addp v0.8b, v0.8b, v0.8b //i pair add nnz 1
|
|
addp v0.8b, v0.8b, v0.8b //i pair add nnz 1
|
|
|
|
st1 {v4.4h-v7.4h}, [x2] //store blk
|
|
|
|
movi v25.8b, #16 //get max nnz
|
|
sub v26.8b, v25.8b , v0.8b //invert current nnz
|
|
st1 {v26.b}[0], [x9] //write nnz
|
|
|
|
pop_v_regs
|
|
ret
|
|
|
|
|
|
//*****************************************************************************
|
|
//*
|
|
//* function name : ih264_hadamard_quant_4x4_av8
|
|
//* description : this function does forward hadamard transform and
|
|
//* quantization for luma dc block
|
|
//*
|
|
//* arguments : x0 :pointer to src buffer
|
|
// x1 :pointer to dst buffer
|
|
// x2 :pu2_scale_matrix
|
|
// x3 :pu2_threshold_matrix
|
|
// w4 :u4_qbits
|
|
// w5 :u4_round_factor
|
|
// x6 :pu1_nnz
|
|
// values returned : none
|
|
//
|
|
// register usage :
|
|
// stack usage : 0 bytes
|
|
// cycles : around
|
|
// interruptiaility : interruptable
|
|
//
|
|
// known limitations
|
|
// \assumptions :
|
|
//
|
|
// revision history :
|
|
// dd mm yyyy author(s) changes
|
|
// 20 2 2015 100633 first version
|
|
//
|
|
//*****************************************************************************
|
|
//ih264_hadamard_quant_4x4_av8(word16 *pi2_src, word16 *pi2_dst,
|
|
// const uword16 *pu2_scale_matrix,
|
|
// const uword16 *pu2_threshold_matrix, uword32 u4_qbits,
|
|
// uword32 u4_round_factor,uword8 *pu1_nnz
|
|
// )
|
|
.global ih264_hadamard_quant_4x4_av8
|
|
ih264_hadamard_quant_4x4_av8:
|
|
|
|
//x0 :pointer to src buffer
|
|
//x1 :pointer to dst buffer
|
|
//x2 :pu2_scale_matrix
|
|
//x3 :pu2_threshold_matrix
|
|
//w4 :u4_qbits
|
|
//w5 :u4_round_factor
|
|
//x6 :pu1_nnz
|
|
|
|
push_v_regs
|
|
|
|
ld4 {v0.4h-v3.4h}, [x0] //load 4x4 block
|
|
ld1 {v30.h}[0], [x2] //load pu2_scale_matrix[0]
|
|
|
|
saddl v4.4s, v0.4h, v3.4h //x0 = x4 + x7;
|
|
saddl v5.4s, v1.4h, v2.4h //x1 = x5 + x6;
|
|
ssubl v6.4s, v1.4h, v2.4h //x2 = x5 - x6;
|
|
ssubl v7.4s, v0.4h, v3.4h //x3 = x4 - x7;
|
|
|
|
dup v30.8h, v30.h[0] //pu2_scale_matrix[0]
|
|
|
|
add v14.4s, v4.4s, v5.4s //pi2_dst[0] = x0 + x1;
|
|
add v15.4s, v7.4s, v6.4s //pi2_dst[1] = x3 + x2;
|
|
sub v16.4s, v4.4s, v5.4s //pi2_dst[2] = x0 - x1;
|
|
sub v17.4s, v7.4s, v6.4s //pi2_dst[3] = x3 - x2;
|
|
|
|
//transpose 4x4 block
|
|
trn1 v18.4s, v14.4s, v15.4s
|
|
trn2 v19.4s, v14.4s, v15.4s
|
|
trn1 v20.4s, v16.4s, v17.4s
|
|
trn2 v21.4s, v16.4s, v17.4s
|
|
|
|
trn1 v14.2d, v18.2d, v20.2d
|
|
trn2 v16.2d, v18.2d, v20.2d
|
|
trn1 v15.2d, v19.2d, v21.2d
|
|
trn2 v17.2d, v19.2d, v21.2d
|
|
//end transpose
|
|
|
|
add v18.4s, v14.4s, v17.4s //x0 = x4 + x7;
|
|
add v19.4s, v15.4s, v16.4s //x1 = x5 + x6;
|
|
sub v20.4s, v15.4s, v16.4s //x2 = x5 - x6;
|
|
sub v21.4s, v14.4s, v17.4s //x3 = x4 - x7;
|
|
|
|
dup v14.4s, w5 //round factor
|
|
dup v15.4s, v14.s[0]
|
|
dup v16.4s, v14.s[0]
|
|
dup v17.4s, v14.s[0]
|
|
|
|
add v22.4s, v18.4s, v19.4s //(x0 + x1)
|
|
add v23.4s, v21.4s, v20.4s //(x3 + x2)
|
|
sub v24.4s, v18.4s, v19.4s //(x0 - x1)
|
|
sub v25.4s, v21.4s, v20.4s //(x3 - x2)
|
|
|
|
shrn v0.4h, v22.4s, #1 //i4_value = (x0 + x1) >> 1;
|
|
shrn2 v0.8h, v23.4s, #1 //i4_value = (x3 + x2) >> 1;
|
|
shrn v1.4h, v24.4s, #1 //i4_value = (x0 - x1) >> 1;
|
|
shrn2 v1.8h, v25.4s, #1 //i4_value = (x3 - x2) >> 1;
|
|
|
|
abs v2.8h, v0.8h
|
|
abs v3.8h, v1.8h
|
|
|
|
cmgt v4.8h, v0.8h, #0 //get the sign row 1,2
|
|
cmgt v5.8h, v1.8h, #0
|
|
|
|
neg w4, w4 //-u4_qbits
|
|
dup v22.4s, w4 //load -u4_qbits
|
|
|
|
umlal v14.4s, v2.4h, v30.4h
|
|
umlal2 v15.4s, v2.8h, v30.8h
|
|
umlal v16.4s, v3.4h, v30.4h
|
|
umlal2 v17.4s, v3.8h, v30.8h
|
|
|
|
ushl v14.4s, v14.4s, v22.4s
|
|
ushl v15.4s, v15.4s, v22.4s
|
|
ushl v16.4s, v16.4s, v22.4s
|
|
ushl v17.4s, v17.4s, v22.4s
|
|
|
|
uqxtn v14.4h, v14.4s
|
|
uqxtn2 v14.8h, v15.4s
|
|
uqxtn v16.4h, v16.4s
|
|
uqxtn2 v16.8h, v17.4s
|
|
|
|
neg v15.8h, v14.8h
|
|
neg v17.8h, v16.8h
|
|
|
|
bsl v4.16b, v14.16b, v15.16b
|
|
bsl v5.16b, v16.16b, v17.16b
|
|
|
|
cmeq v0.8h, v14.8h, #0
|
|
cmeq v1.8h, v16.8h, #0
|
|
|
|
st1 {v4.8h-v5.8h}, [x1]
|
|
|
|
movi v20.8b, #16
|
|
|
|
xtn v2.8b, v0.8h
|
|
xtn v3.8b, v1.8h
|
|
|
|
ushr v2.8b, v2.8b, #7
|
|
ushr v3.8b, v3.8b, #7
|
|
|
|
add v2.8b, v2.8b, v3.8b
|
|
addp v2.8b, v2.8b, v2.8b
|
|
addp v2.8b, v2.8b, v2.8b
|
|
addp v2.8b, v2.8b, v2.8b
|
|
sub v20.8b, v20.8b, v2.8b
|
|
st1 {v20.b}[0], [x6]
|
|
|
|
pop_v_regs
|
|
ret
|
|
|
|
|
|
//*****************************************************************************
|
|
//*
|
|
//* function name : ih264_hadamard_quant_2x2_uv
|
|
//* description : this function does forward hadamard transform and
|
|
//* quantization for dc block of chroma for both planes
|
|
//*
|
|
//* arguments : x0 :pointer to src buffer
|
|
// x1 :pointer to dst buffer
|
|
// x2 :pu2_scale_matrix
|
|
// x3 :pu2_threshold_matrix
|
|
// w4 :u4_qbits
|
|
// w5 :u4_round_factor
|
|
// x6 :pu1_nnz
|
|
// values returned : none
|
|
//
|
|
// register usage :
|
|
// stack usage : 0 bytes
|
|
// cycles : around
|
|
// interruptiaility : interruptable
|
|
//
|
|
// known limitations
|
|
// \assumptions :
|
|
//
|
|
// revision history :
|
|
// dd mm yyyy author(s) changes
|
|
// 20 2 2015 100633 first version
|
|
//
|
|
//*****************************************************************************
|
|
// ih264_hadamard_quant_2x2_uv_av8(word16 *pi2_src, word16 *pi2_dst,
|
|
// const uword16 *pu2_scale_matrix,
|
|
// const uword16 *pu2_threshold_matrix, uword32 u4_qbits,
|
|
// uword32 u4_round_factor,uword8 *pu1_nnz
|
|
// )
|
|
|
|
.global ih264_hadamard_quant_2x2_uv_av8
|
|
ih264_hadamard_quant_2x2_uv_av8:
|
|
|
|
push_v_regs
|
|
|
|
ld2 {v0.4h-v1.4h}, [x0] //load src
|
|
|
|
ld1 {v30.h}[0], [x2] //load pu2_scale_matrix[0]
|
|
dup v30.4h, v30.h[0] //pu2_scale_matrix
|
|
uxtl v30.4s, v30.4h //pu2_scale_matrix
|
|
|
|
neg w4, w4
|
|
dup v24.4s, w4 //u4_qbits
|
|
|
|
dup v25.4s, w5 //round fact
|
|
dup v26.4s, v25.s[0]
|
|
|
|
saddl v2.4s, v0.4h, v1.4h //x0 = x4 + x5;, x2 = x6 + x7;
|
|
ssubl v3.4s, v0.4h, v1.4h //x1 = x4 - x5; x3 = x6 - x7;
|
|
|
|
trn1 v4.4s, v2.4s, v3.4s
|
|
trn2 v5.4s, v2.4s, v3.4s //q1 -> x0 x1, q2 -> x2 x3
|
|
|
|
add v0.4s, v4.4s , v5.4s // (x0 + x2) (x1 + x3) (y0 + y2); (y1 + y3);
|
|
sub v1.4s, v4.4s , v5.4s // (x0 - x2) (x1 - x3) (y0 - y2); (y1 - y3);
|
|
|
|
abs v2.4s, v0.4s
|
|
abs v3.4s, v1.4s
|
|
|
|
cmgt v4.4s, v0.4s, #0 //get the sign row 1,2
|
|
cmgt v5.4s, v1.4s, #0
|
|
|
|
uqxtn v4.4h, v4.4s
|
|
sqxtn2 v4.8h, v5.4s
|
|
|
|
mla v25.4s, v2.4s, v30.4s
|
|
mla v26.4s, v3.4s, v30.4s
|
|
|
|
ushl v2.4s, v25.4s, v24.4s //>>qbit
|
|
ushl v3.4s, v26.4s, v24.4s //>>qbit
|
|
|
|
uqxtn v2.4h, v2.4s
|
|
uqxtn2 v2.8h, v3.4s
|
|
|
|
neg v5.8h, v2.8h
|
|
|
|
bsl v4.16b, v2.16b, v5.16b //*sign
|
|
|
|
//rearrange such that we get each plane coeffs as continous
|
|
mov v5.s[0], v4.s[1]
|
|
mov v4.s[1], v4.s[2]
|
|
mov v4.s[2], v5.s[0]
|
|
|
|
cmeq v5.8h, v4.8h, #0 //compute nnz
|
|
xtn v5.8b, v5.8h //reduce nnz comparison to 1 bit
|
|
ushr v5.8b, v5.8b, #7 //reduce nnz comparison to 1 bit
|
|
movi v20.8b, #4 //since we add zeros, we need to subtract from 4 to get nnz
|
|
addp v5.8b, v5.8b, v5.8b //sum up nnz
|
|
addp v5.8b, v5.8b, v5.8b //sum up nnz
|
|
|
|
st1 {v4.8h}, [x1] //store the block
|
|
|
|
st1 {v4.8h}, [x1] //store the block
|
|
sub v20.8b, v20.8b, v5.8b //4- numzeros
|
|
|
|
st1 {v20.h}[0], [x6] //store nnz
|
|
|
|
pop_v_regs
|
|
ret
|
|
|
|
|
|
|