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ac3enc: NEON optimised ac3_max_msb_abs_int16 and ac3_exponent_min
This commit is contained in:
Mans Rullgard
parent
f711424969
commit
f4855a904e
@ -109,6 +109,8 @@ av_cold void ff_ac3dsp_init(AC3DSPContext *c, int bit_exact)
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c->ac3_rshift_int32 = ac3_rshift_int32_c;
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c->ac3_rshift_int32 = ac3_rshift_int32_c;
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c->float_to_fixed24 = float_to_fixed24_c;
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c->float_to_fixed24 = float_to_fixed24_c;
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if (ARCH_ARM)
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ff_ac3dsp_init_arm(c, bit_exact);
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if (HAVE_MMX)
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if (HAVE_MMX)
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ff_ac3dsp_init_x86(c, bit_exact);
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ff_ac3dsp_init_x86(c, bit_exact);
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}
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}
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@ -84,6 +84,7 @@ typedef struct AC3DSPContext {
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} AC3DSPContext;
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} AC3DSPContext;
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void ff_ac3dsp_init (AC3DSPContext *c, int bit_exact);
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void ff_ac3dsp_init (AC3DSPContext *c, int bit_exact);
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void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact);
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void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact);
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void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact);
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#endif /* AVCODEC_AC3DSP_H */
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#endif /* AVCODEC_AC3DSP_H */
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@ -1,3 +1,4 @@
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OBJS-$(CONFIG_AC3DSP) += arm/ac3dsp_init_arm.o
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OBJS-$(CONFIG_DCA_DECODER) += arm/dcadsp_init_arm.o \
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OBJS-$(CONFIG_DCA_DECODER) += arm/dcadsp_init_arm.o \
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OBJS-$(CONFIG_VP5_DECODER) += arm/vp56dsp_init_arm.o
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OBJS-$(CONFIG_VP5_DECODER) += arm/vp56dsp_init_arm.o
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@ -46,6 +47,8 @@ NEON-OBJS-$(CONFIG_H264DSP) += arm/h264dsp_neon.o \
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NEON-OBJS-$(CONFIG_H264PRED) += arm/h264pred_neon.o \
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NEON-OBJS-$(CONFIG_H264PRED) += arm/h264pred_neon.o \
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NEON-OBJS-$(CONFIG_AC3DSP) += arm/ac3dsp_neon.o
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NEON-OBJS-$(CONFIG_DCA_DECODER) += arm/dcadsp_neon.o \
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NEON-OBJS-$(CONFIG_DCA_DECODER) += arm/dcadsp_neon.o \
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arm/synth_filter_neon.o \
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arm/synth_filter_neon.o \
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35
libavcodec/arm/ac3dsp_init_arm.c
Normal file
35
libavcodec/arm/ac3dsp_init_arm.c
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@ -0,0 +1,35 @@
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/*
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* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
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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 <stdint.h>
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#include "libavutil/attributes.h"
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#include "libavcodec/ac3dsp.h"
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#include "config.h"
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void ff_ac3_exponent_min_neon(uint8_t *exp, int num_reuse_blocks, int nb_coefs);
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int ff_ac3_max_msb_abs_int16_neon(const int16_t *src, int len);
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av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact)
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{
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if (HAVE_NEON) {
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c->ac3_exponent_min = ff_ac3_exponent_min_neon;
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c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_neon;
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}
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}
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59
libavcodec/arm/ac3dsp_neon.S
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59
libavcodec/arm/ac3dsp_neon.S
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@ -0,0 +1,59 @@
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/*
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* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
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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 "asm.S"
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function ff_ac3_max_msb_abs_int16_neon, export=1
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vmov.i16 q0, #0
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vmov.i16 q2, #0
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1: vld1.16 {q1}, [r0,:128]!
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vabs.s16 q1, q1
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vld1.16 {q3}, [r0,:128]!
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vabs.s16 q3, q3
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vorr q0, q0, q1
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vorr q2, q2, q3
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subs r1, r1, #16
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bgt 1b
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vorr q0, q0, q2
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vorr d0, d0, d1
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vpmax.u16 d0, d0, d0
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vpmax.u16 d0, d0, d0
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vmov.u16 r0, d0[0]
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bx lr
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endfunc
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function ff_ac3_exponent_min_neon, export=1
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cmp r1, #0
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bxeq lr
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push {lr}
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mov r12, #256
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1:
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vld1.8 {q0}, [r0,:128]
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mov lr, r1
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add r3, r0, #256
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2: vld1.8 {q1}, [r3,:128], r12
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subs lr, lr, #1
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vmin.u8 q0, q0, q1
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bgt 2b
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subs r2, r2, #16
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vst1.8 {q0}, [r0,:128]!
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bgt 1b
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pop {pc}
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endfunc
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