mirror of https://git.ffmpeg.org/ffmpeg.git
376 lines
13 KiB
ArmAsm
376 lines
13 KiB
ArmAsm
/*
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* ARM NEON IDCT
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*
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* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
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*
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* Based on Simple IDCT
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* Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/arm/asm.S"
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#define W1 22725 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
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#define W2 21407 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
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#define W3 19266 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
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#define W4 16383 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
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#define W5 12873 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
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#define W6 8867 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
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#define W7 4520 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
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#define W4c ((1<<(COL_SHIFT-1))/W4)
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#define ROW_SHIFT 11
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#define COL_SHIFT 20
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#define w1 d0[0]
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#define w2 d0[1]
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#define w3 d0[2]
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#define w4 d0[3]
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#define w5 d1[0]
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#define w6 d1[1]
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#define w7 d1[2]
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#define w4c d1[3]
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.macro idct_col4_top
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vmull.s16 q7, d6, w2 /* q9 = W2 * col[2] */
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vmull.s16 q8, d6, w6 /* q10 = W6 * col[2] */
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vmull.s16 q9, d4, w1 /* q9 = W1 * col[1] */
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vadd.i32 q11, q15, q7
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vmull.s16 q10, d4, w3 /* q10 = W3 * col[1] */
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vadd.i32 q12, q15, q8
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vmull.s16 q5, d4, w5 /* q5 = W5 * col[1] */
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vsub.i32 q13, q15, q8
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vmull.s16 q6, d4, w7 /* q6 = W7 * col[1] */
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vsub.i32 q14, q15, q7
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vmlal.s16 q9, d8, w3 /* q9 += W3 * col[3] */
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vmlsl.s16 q10, d8, w7 /* q10 -= W7 * col[3] */
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vmlsl.s16 q5, d8, w1 /* q5 -= W1 * col[3] */
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vmlsl.s16 q6, d8, w5 /* q6 -= W5 * col[3] */
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.endm
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.text
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.align 6
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function idct_row4_pld_neon
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pld [r0]
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add r3, r0, r1, lsl #2
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pld [r0, r1]
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pld [r0, r1, lsl #1]
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A pld [r3, -r1]
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pld [r3]
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pld [r3, r1]
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add r3, r3, r1, lsl #1
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pld [r3]
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pld [r3, r1]
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endfunc
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function idct_row4_neon
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vmov.i32 q15, #(1<<(ROW_SHIFT-1))
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vld1.64 {d2-d5}, [r2,:128]!
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vmlal.s16 q15, d2, w4 /* q15 += W4 * col[0] */
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vld1.64 {d6,d7}, [r2,:128]!
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vorr d10, d3, d5
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vld1.64 {d8,d9}, [r2,:128]!
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add r2, r2, #-64
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vorr d11, d7, d9
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vorr d10, d10, d11
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vmov r3, r4, d10
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idct_col4_top
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orrs r3, r3, r4
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beq 1f
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vmull.s16 q7, d3, w4 /* q7 = W4 * col[4] */
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vmlal.s16 q9, d5, w5 /* q9 += W5 * col[5] */
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vmlsl.s16 q10, d5, w1 /* q10 -= W1 * col[5] */
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vmull.s16 q8, d7, w2 /* q8 = W2 * col[6] */
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vmlal.s16 q5, d5, w7 /* q5 += W7 * col[5] */
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vadd.i32 q11, q11, q7
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vsub.i32 q12, q12, q7
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vsub.i32 q13, q13, q7
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vadd.i32 q14, q14, q7
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vmlal.s16 q6, d5, w3 /* q6 += W3 * col[5] */
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vmull.s16 q7, d7, w6 /* q7 = W6 * col[6] */
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vmlal.s16 q9, d9, w7
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vmlsl.s16 q10, d9, w5
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vmlal.s16 q5, d9, w3
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vmlsl.s16 q6, d9, w1
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vadd.i32 q11, q11, q7
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vsub.i32 q12, q12, q8
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vadd.i32 q13, q13, q8
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vsub.i32 q14, q14, q7
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1: vadd.i32 q3, q11, q9
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vadd.i32 q4, q12, q10
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vshrn.i32 d2, q3, #ROW_SHIFT
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vshrn.i32 d4, q4, #ROW_SHIFT
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vadd.i32 q7, q13, q5
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vadd.i32 q8, q14, q6
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vtrn.16 d2, d4
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vshrn.i32 d6, q7, #ROW_SHIFT
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vshrn.i32 d8, q8, #ROW_SHIFT
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vsub.i32 q14, q14, q6
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vsub.i32 q11, q11, q9
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vtrn.16 d6, d8
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vsub.i32 q13, q13, q5
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vshrn.i32 d3, q14, #ROW_SHIFT
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vtrn.32 d2, d6
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vsub.i32 q12, q12, q10
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vtrn.32 d4, d8
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vshrn.i32 d5, q13, #ROW_SHIFT
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vshrn.i32 d7, q12, #ROW_SHIFT
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vshrn.i32 d9, q11, #ROW_SHIFT
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vtrn.16 d3, d5
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vtrn.16 d7, d9
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vtrn.32 d3, d7
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vtrn.32 d5, d9
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vst1.64 {d2-d5}, [r2,:128]!
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vst1.64 {d6-d9}, [r2,:128]!
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bx lr
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endfunc
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function idct_col4_neon
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mov ip, #16
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vld1.64 {d2}, [r2,:64], ip /* d2 = col[0] */
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vdup.16 d30, w4c
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vld1.64 {d4}, [r2,:64], ip /* d3 = col[1] */
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vadd.i16 d30, d30, d2
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vld1.64 {d6}, [r2,:64], ip /* d4 = col[2] */
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vmull.s16 q15, d30, w4 /* q15 = W4*(col[0]+(1<<COL_SHIFT-1)/W4)*/
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vld1.64 {d8}, [r2,:64], ip /* d5 = col[3] */
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ldrd r4, r5, [r2]
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ldrd r6, r7, [r2, #16]
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orrs r4, r4, r5
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idct_col4_top
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it eq
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addeq r2, r2, #16
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beq 1f
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vld1.64 {d3}, [r2,:64], ip /* d6 = col[4] */
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vmull.s16 q7, d3, w4 /* q7 = W4 * col[4] */
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vadd.i32 q11, q11, q7
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vsub.i32 q12, q12, q7
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vsub.i32 q13, q13, q7
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vadd.i32 q14, q14, q7
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1: orrs r6, r6, r7
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ldrd r4, r5, [r2, #16]
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it eq
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addeq r2, r2, #16
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beq 2f
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vld1.64 {d5}, [r2,:64], ip /* d7 = col[5] */
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vmlal.s16 q9, d5, w5 /* q9 += W5 * col[5] */
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vmlsl.s16 q10, d5, w1 /* q10 -= W1 * col[5] */
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vmlal.s16 q5, d5, w7 /* q5 += W7 * col[5] */
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vmlal.s16 q6, d5, w3 /* q6 += W3 * col[5] */
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2: orrs r4, r4, r5
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ldrd r4, r5, [r2, #16]
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it eq
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addeq r2, r2, #16
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beq 3f
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vld1.64 {d7}, [r2,:64], ip /* d8 = col[6] */
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vmull.s16 q7, d7, w6 /* q7 = W6 * col[6] */
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vmull.s16 q8, d7, w2 /* q8 = W2 * col[6] */
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vadd.i32 q11, q11, q7
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vsub.i32 q14, q14, q7
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vsub.i32 q12, q12, q8
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vadd.i32 q13, q13, q8
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3: orrs r4, r4, r5
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it eq
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addeq r2, r2, #16
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beq 4f
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vld1.64 {d9}, [r2,:64], ip /* d9 = col[7] */
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vmlal.s16 q9, d9, w7
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vmlsl.s16 q10, d9, w5
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vmlal.s16 q5, d9, w3
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vmlsl.s16 q6, d9, w1
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4: vaddhn.i32 d2, q11, q9
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vaddhn.i32 d3, q12, q10
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vaddhn.i32 d4, q13, q5
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vaddhn.i32 d5, q14, q6
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vsubhn.i32 d9, q11, q9
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vsubhn.i32 d8, q12, q10
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vsubhn.i32 d7, q13, q5
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vsubhn.i32 d6, q14, q6
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bx lr
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endfunc
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.align 6
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function idct_col4_st8_neon
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vqshrun.s16 d2, q1, #COL_SHIFT-16
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vqshrun.s16 d3, q2, #COL_SHIFT-16
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vqshrun.s16 d4, q3, #COL_SHIFT-16
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vqshrun.s16 d5, q4, #COL_SHIFT-16
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vst1.32 {d2[0]}, [r0,:32], r1
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vst1.32 {d2[1]}, [r0,:32], r1
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vst1.32 {d3[0]}, [r0,:32], r1
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vst1.32 {d3[1]}, [r0,:32], r1
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vst1.32 {d4[0]}, [r0,:32], r1
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vst1.32 {d4[1]}, [r0,:32], r1
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vst1.32 {d5[0]}, [r0,:32], r1
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vst1.32 {d5[1]}, [r0,:32], r1
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bx lr
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endfunc
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const idct_coeff_neon, align=4
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.short W1, W2, W3, W4, W5, W6, W7, W4c
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endconst
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.macro idct_start data
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push {r4-r7, lr}
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pld [\data]
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pld [\data, #64]
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vpush {d8-d15}
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movrel r3, idct_coeff_neon
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vld1.64 {d0,d1}, [r3,:128]
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.endm
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.macro idct_end
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vpop {d8-d15}
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pop {r4-r7, pc}
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.endm
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/* void ff_simple_idct_put_neon(uint8_t *dst, ptrdiff_t line_size, int16_t *data); */
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function ff_simple_idct_put_neon, export=1
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idct_start r2
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bl idct_row4_pld_neon
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bl idct_row4_neon
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add r2, r2, #-128
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bl idct_col4_neon
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bl idct_col4_st8_neon
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sub r0, r0, r1, lsl #3
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add r0, r0, #4
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add r2, r2, #-120
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bl idct_col4_neon
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bl idct_col4_st8_neon
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idct_end
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endfunc
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.align 6
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function idct_col4_add8_neon
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mov ip, r0
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vld1.32 {d10[0]}, [r0,:32], r1
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vshr.s16 q1, q1, #COL_SHIFT-16
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vld1.32 {d10[1]}, [r0,:32], r1
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vshr.s16 q2, q2, #COL_SHIFT-16
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vld1.32 {d11[0]}, [r0,:32], r1
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vshr.s16 q3, q3, #COL_SHIFT-16
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vld1.32 {d11[1]}, [r0,:32], r1
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vshr.s16 q4, q4, #COL_SHIFT-16
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vld1.32 {d12[0]}, [r0,:32], r1
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vaddw.u8 q1, q1, d10
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vld1.32 {d12[1]}, [r0,:32], r1
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vaddw.u8 q2, q2, d11
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vld1.32 {d13[0]}, [r0,:32], r1
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vqmovun.s16 d2, q1
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vld1.32 {d13[1]}, [r0,:32], r1
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vaddw.u8 q3, q3, d12
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vst1.32 {d2[0]}, [ip,:32], r1
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vqmovun.s16 d3, q2
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vst1.32 {d2[1]}, [ip,:32], r1
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vaddw.u8 q4, q4, d13
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vst1.32 {d3[0]}, [ip,:32], r1
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vqmovun.s16 d4, q3
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vst1.32 {d3[1]}, [ip,:32], r1
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vqmovun.s16 d5, q4
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vst1.32 {d4[0]}, [ip,:32], r1
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vst1.32 {d4[1]}, [ip,:32], r1
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vst1.32 {d5[0]}, [ip,:32], r1
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vst1.32 {d5[1]}, [ip,:32], r1
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bx lr
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endfunc
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/* void ff_simple_idct_add_neon(uint8_t *dst, ptrdiff_t line_size, int16_t *data); */
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function ff_simple_idct_add_neon, export=1
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idct_start r2
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bl idct_row4_pld_neon
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bl idct_row4_neon
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add r2, r2, #-128
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bl idct_col4_neon
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bl idct_col4_add8_neon
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sub r0, r0, r1, lsl #3
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add r0, r0, #4
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add r2, r2, #-120
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bl idct_col4_neon
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bl idct_col4_add8_neon
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idct_end
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endfunc
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.align 6
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function idct_col4_st16_neon
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mov ip, #16
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vshr.s16 q1, q1, #COL_SHIFT-16
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vshr.s16 q2, q2, #COL_SHIFT-16
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vst1.64 {d2}, [r2,:64], ip
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vshr.s16 q3, q3, #COL_SHIFT-16
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vst1.64 {d3}, [r2,:64], ip
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vshr.s16 q4, q4, #COL_SHIFT-16
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vst1.64 {d4}, [r2,:64], ip
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vst1.64 {d5}, [r2,:64], ip
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vst1.64 {d6}, [r2,:64], ip
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vst1.64 {d7}, [r2,:64], ip
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vst1.64 {d8}, [r2,:64], ip
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vst1.64 {d9}, [r2,:64], ip
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bx lr
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endfunc
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/* void ff_simple_idct_neon(int16_t *data); */
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function ff_simple_idct_neon, export=1
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idct_start r0
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mov r2, r0
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bl idct_row4_neon
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bl idct_row4_neon
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add r2, r2, #-128
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bl idct_col4_neon
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add r2, r2, #-128
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bl idct_col4_st16_neon
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add r2, r2, #-120
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bl idct_col4_neon
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add r2, r2, #-128
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bl idct_col4_st16_neon
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idct_end
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endfunc
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