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/*
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synth_stereo_neon: ARM NEON optimized synth (stereo specific version)
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copyright 1995-2010 by the mpg123 project - free software under the terms of the LGPL 2.1
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see COPYING and AUTHORS files in distribution or http://mpg123.org
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initially written by Taihei Monma
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*/
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#include "mangle.h"
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#define WINDOW r0
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#define B0L r1
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#define B0R r2
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#define SAMPLES r3
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/*
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int synth_1to1_s_neon_asm(short *window, short *b0l, short *b0r, short *samples, int bo1);
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return value: number of clipped samples
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*/
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#ifndef _M_ARM
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.code 32
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#endif
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#ifndef __APPLE__
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.fpu neon
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#endif
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.text
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GLOBAL_SYMBOL ASM_NAME(synth_1to1_s_neon_asm)
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#ifdef __ELF__
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.type ASM_NAME(synth_1to1_s_neon_asm), %function
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#endif
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ALIGN4
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ASM_NAME(synth_1to1_s_neon_asm):
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push {r4-r6, lr}
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vpush {q4-q7}
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ldr r4, [sp, #80]
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add WINDOW, WINDOW, #32
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sub WINDOW, WINDOW, r4, lsl #1
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mov r4, #4
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mov r5, #64
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1:
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vld1.16 {d0-d3}, [WINDOW], r5
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vld1.16 {d4-d7}, [WINDOW], r5
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vld1.16 {d8-d11}, [B0L, :128]!
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vld1.16 {d12-d15}, [B0R, :128]!
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vld1.16 {d16-d19}, [B0L, :128]!
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vld1.16 {d20-d23}, [B0R, :128]!
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vmull.s16 q12, d0, d8
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vmull.s16 q13, d0, d12
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vmull.s16 q14, d4, d16
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vmull.s16 q15, d4, d20
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vmlal.s16 q12, d1, d9
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vmlal.s16 q13, d1, d13
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vmlal.s16 q14, d5, d17
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vmlal.s16 q15, d5, d21
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vmlal.s16 q12, d2, d10
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vmlal.s16 q13, d2, d14
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vmlal.s16 q14, d6, d18
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vmlal.s16 q15, d6, d22
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vmlal.s16 q12, d3, d11
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vmlal.s16 q13, d3, d15
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vmlal.s16 q14, d7, d19
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vmlal.s16 q15, d7, d23
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vpadd.i32 d24, d24, d25
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vpadd.i32 d26, d26, d27
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vpadd.i32 d28, d28, d29
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vpadd.i32 d30, d30, d31
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vpadd.i32 d24, d24, d26
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vpadd.i32 d25, d28, d30
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vqrshrn.s32 d0, q12, #13
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vst1.16 {d0}, [SAMPLES]!
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vld1.16 {d0-d3}, [WINDOW], r5
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vld1.16 {d4-d7}, [WINDOW], r5
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vld1.16 {d8-d11}, [B0L, :128]!
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vld1.16 {d12-d15}, [B0R, :128]!
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vld1.16 {d16-d19}, [B0L, :128]!
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vld1.16 {d20-d23}, [B0R, :128]!
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vmull.s16 q12, d0, d8
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vmull.s16 q13, d0, d12
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vmull.s16 q14, d4, d16
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vmull.s16 q15, d4, d20
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vmlal.s16 q12, d1, d9
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vmlal.s16 q13, d1, d13
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vmlal.s16 q14, d5, d17
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vmlal.s16 q15, d5, d21
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vmlal.s16 q12, d2, d10
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vmlal.s16 q13, d2, d14
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vmlal.s16 q14, d6, d18
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vmlal.s16 q15, d6, d22
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vmlal.s16 q12, d3, d11
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vmlal.s16 q13, d3, d15
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vmlal.s16 q14, d7, d19
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vmlal.s16 q15, d7, d23
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vpadd.i32 d24, d24, d25
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vpadd.i32 d26, d26, d27
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vpadd.i32 d28, d28, d29
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vpadd.i32 d30, d30, d31
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vpadd.i32 d24, d24, d26
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vpadd.i32 d25, d28, d30
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vqrshrn.s32 d0, q12, #13
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vst1.16 {d0}, [SAMPLES]!
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subs r4, r4, #1
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bne 1b
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mov r4, #4
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mov r6, #-32
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1:
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vld1.16 {d0-d3}, [WINDOW], r5
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vld1.16 {d4-d7}, [WINDOW], r5
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vld1.16 {d8-d11}, [B0L, :128], r6
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vld1.16 {d12-d15}, [B0R, :128], r6
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vld1.16 {d16-d19}, [B0L, :128], r6
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vld1.16 {d20-d23}, [B0R, :128], r6
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vmull.s16 q12, d0, d8
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vmull.s16 q13, d0, d12
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vmull.s16 q14, d4, d16
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vmull.s16 q15, d4, d20
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vmlal.s16 q12, d1, d9
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vmlal.s16 q13, d1, d13
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vmlal.s16 q14, d5, d17
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vmlal.s16 q15, d5, d21
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vmlal.s16 q12, d2, d10
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vmlal.s16 q13, d2, d14
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vmlal.s16 q14, d6, d18
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vmlal.s16 q15, d6, d22
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vmlal.s16 q12, d3, d11
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vmlal.s16 q13, d3, d15
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vmlal.s16 q14, d7, d19
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vmlal.s16 q15, d7, d23
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vpadd.i32 d24, d24, d25
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vpadd.i32 d26, d26, d27
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vpadd.i32 d28, d28, d29
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vpadd.i32 d30, d30, d31
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vpadd.i32 d24, d24, d26
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vpadd.i32 d25, d28, d30
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vqrshrn.s32 d0, q12, #13
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vst1.16 {d0}, [SAMPLES]!
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vld1.16 {d0-d3}, [WINDOW], r5
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vld1.16 {d4-d7}, [WINDOW], r5
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vld1.16 {d8-d11}, [B0L, :128], r6
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vld1.16 {d12-d15}, [B0R, :128], r6
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vld1.16 {d16-d19}, [B0L, :128], r6
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vld1.16 {d20-d23}, [B0R, :128], r6
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vmull.s16 q12, d0, d8
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vmull.s16 q13, d0, d12
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vmull.s16 q14, d4, d16
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vmull.s16 q15, d4, d20
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vmlal.s16 q12, d1, d9
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vmlal.s16 q13, d1, d13
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vmlal.s16 q14, d5, d17
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vmlal.s16 q15, d5, d21
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vmlal.s16 q12, d2, d10
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vmlal.s16 q13, d2, d14
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vmlal.s16 q14, d6, d18
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vmlal.s16 q15, d6, d22
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vmlal.s16 q12, d3, d11
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vmlal.s16 q13, d3, d15
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vmlal.s16 q14, d7, d19
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vmlal.s16 q15, d7, d23
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vpadd.i32 d24, d24, d25
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vpadd.i32 d26, d26, d27
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vpadd.i32 d28, d28, d29
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vpadd.i32 d30, d30, d31
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vpadd.i32 d24, d24, d26
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vpadd.i32 d25, d28, d30
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vqrshrn.s32 d0, q12, #13
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vst1.16 {d0}, [SAMPLES]!
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subs r4, r4, #1
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bne 1b
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mov r0, #0
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vpop {q4-q7}
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pop {r4-r6, pc}
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NONEXEC_STACK
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