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riscv: add RV-V accelerated audio volume module
This commit is contained in:
Rémi Denis-Courmont
Hugo Beauzée-Luyssen
parent
45fe2cb830
commit
d08f57985a
@ -32,6 +32,7 @@ include hw/vaapi/Makefile.am
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include hw/vdpau/Makefile.am
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include hw/mmal/Makefile.am
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include isa/arm/Makefile.am
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include isa/riscv/Makefile.am
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include keystore/Makefile.am
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include logger/Makefile.am
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include lua/Makefile.am
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9
modules/isa/riscv/Makefile.am
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9
modules/isa/riscv/Makefile.am
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@ -0,0 +1,9 @@
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riscvdir = $(pluginsdir)/riscv
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libvolume_rvv_plugin_la_SOURCES = isa/riscv/mixer.c isa/riscv/rvv_amplify.S
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libvolume_rvv_plugin_la_LIBADD = $(AM_LIBADD) $(LIBM)
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if HAVE_RVV
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riscv_LTLIBRARIES = \
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libvolume_rvv_plugin.la
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endif
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134
modules/isa/riscv/mixer.c
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134
modules/isa/riscv/mixer.c
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@ -0,0 +1,134 @@
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/*****************************************************************************
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* mixer.c: RISC-V V audio volume mixer module
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*****************************************************************************
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* Copyright (C) 2012, 2022 Rémi Denis-Courmont
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU 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 License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <assert.h>
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#include <math.h>
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#include <stdint.h>
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_cpu.h>
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#include <vlc_aout.h>
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#include <vlc_aout_volume.h>
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void rvv_amplify_f32(void *, const void *, size_t, float);
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void rvv_amplify_f64(void *, const void *, size_t, double);
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void rvv_amplify_i16(void *, const void *, size_t, uint16_t);
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void rvv_amplify_i32(void *, const void *, size_t, uint32_t);
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void rvv_amplify_u8(void *, const void *, size_t, uint8_t);
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static void AmplifyFloat(audio_volume_t *volume, block_t *block, float amp)
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{
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void *buf = block->p_buffer;
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if (amp != 1.f)
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rvv_amplify_f32(buf, buf, block->i_buffer, amp);
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(void) volume;
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}
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static void AmplifyDouble(audio_volume_t *volume, block_t *block, float amp)
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{
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void *buf = block->p_buffer;
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if (amp != 1.f)
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rvv_amplify_f64(buf, buf, block->i_buffer, amp);
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(void) volume;
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}
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static void AmplifyShort(audio_volume_t *volume, block_t *block, float amp)
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{
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void *buf = block->p_buffer;
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uint_fast16_t fixed_amp = lroundf(ldexpf(amp, 16));
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if (amp != 1.f)
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rvv_amplify_i16(buf, buf, block->i_buffer, fixed_amp);
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(void) volume;
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}
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static void AmplifyInt(audio_volume_t *volume, block_t *block, float amp)
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{
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void *buf = block->p_buffer;
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uint_fast32_t fixed_amp = lroundf(ldexpf(amp, 32));
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if (amp != 1.f)
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rvv_amplify_i32(buf, buf, block->i_buffer, fixed_amp);
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(void) volume;
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}
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static void AmplifyByte(audio_volume_t *volume, block_t *block, float amp)
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{
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void *buf = block->p_buffer;
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uint_fast8_t fixed_amp = lroundf(ldexpf(amp, 8));
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if (amp != 1.f)
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rvv_amplify_u8(buf, buf, block->i_buffer, fixed_amp);
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(void) volume;
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}
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static int Probe(vlc_object_t *obj)
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{
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audio_volume_t *volume = (audio_volume_t *)obj;
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if (!vlc_CPU_RV_V())
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return VLC_ENOTSUP;
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switch (volume->format) {
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case VLC_CODEC_FL32:
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volume->amplify = AmplifyFloat;
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break;
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case VLC_CODEC_FL64:
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volume->amplify = AmplifyDouble;
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break;
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case VLC_CODEC_S16N:
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volume->amplify = AmplifyShort;
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break;
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case VLC_CODEC_S32N:
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volume->amplify = AmplifyInt;
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break;
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case VLC_CODEC_U8:
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volume->amplify = AmplifyByte;
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break;
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default:
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return VLC_ENOTSUP;
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}
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return VLC_SUCCESS;
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}
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vlc_module_begin()
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set_subcategory(SUBCAT_AUDIO_AFILTER)
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set_description("RISC-V V optimisation for audio volume")
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set_capability("audio volume", 20)
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set_callback(Probe)
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vlc_module_end()
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103
modules/isa/riscv/rvv_amplify.S
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103
modules/isa/riscv/rvv_amplify.S
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@ -0,0 +1,103 @@
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/*****************************************************************************
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* amplify.S: RISC-V V software amplification
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******************************************************************************
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* Copyright (C) 2022 Rémi Denis-Courmont
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU 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 License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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.option arch, +v
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.text
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.align 2
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.globl rvv_amplify_f32
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.type rvv_amplify_f32, %function
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rvv_amplify_f32:
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srli a2, a2, 2
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#if defined (__riscv_float_abi_soft)
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fmv.w.x fa0, a3
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#endif
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1: vsetvli t0, a2, e32, m8, ta, ma
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slli t1, t0, 2
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vle32.v v16, (a1)
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add a1, a1, t1
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vfmul.vf v16, v16, fa0
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sub a2, a2, t0
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vse32.v v16, (a0)
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add a0, a0, t1
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bnez a2, 1b
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ret
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.globl rvv_amplify_f64
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.type rvv_amplify_f64, %function
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rvv_amplify_f64:
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srli a2, a2, 3
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#if defined (__riscv_float_abi_soft) || defined (__riscv_float_abi_single)
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fmv.d.x fa0, a3
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#endif
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1: vsetvli t0, a2, e64, m8, ta, ma
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slli t1, t0, 3
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vle64.v v16, (a1)
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add a1, a1, t1
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vfmul.vf v16, v16, fa0
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sub a2, a2, t0
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vse64.v v16, (a0)
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add a0, a0, t1
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bnez a2, 1b
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ret
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.globl rvv_amplify_i16
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.type rvv_amplify_i16, %function
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rvv_amplify_i16:
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srli a2, a2, 1
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1: vsetvli t0, a2, e16, m8, ta, ma
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slli t1, t0, 1
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vle16.v v16, (a1)
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add a1, a1, t1
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vmulhsu.vx v16, v16, a3
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sub a2, a2, t0
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vse16.v v16, (a0)
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add a0, a0, t1
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bnez a2, 1b
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ret
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.globl rvv_amplify_i32
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.type rvv_amplify_i32, %function
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rvv_amplify_i32:
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srli a2, a2, 2
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1: vsetvli t0, a2, e32, m8, ta, ma
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slli t1, t0, 2
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vle32.v v16, (a1)
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add a1, a1, t1
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vmulhsu.vx v16, v16, a3
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sub a2, a2, t0
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vse32.v v16, (a0)
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add a0, a0, t1
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bnez a2, 1b
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ret
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.globl rvv_amplify_u8
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.type rvv_amplify_u8, %function
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rvv_amplify_u8:
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1: vsetvli t0, a2, e8, m8, ta, ma
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vle8.v v16, (a1)
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add a1, a1, t0
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vmulhu.vx v16, v16, a3
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sub a2, a2, t0
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vse8.v v16, (a0)
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add a0, a0, t0
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bnez a2, 1b
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ret
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