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FFmpeg/libavcodec/aarch64/opusdsp_neon.S

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aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/aarch64/asm.S"
function ff_opus_deemphasis_neon, export=1
opusdsp: add ability to modify deemphasis constant xHE-AAC relies on the same postfilter mechanism that Opus uses to improve clarity (albeit with a steeper deemphasis filter). The code to apply it is identical, it's still just a simple IIR low-pass filter. This commit makes it possible to use alternative constants.
2024-01-29 05:31:43 +02:00
ld1 {v4.4s}, [x2], #16
ld1 {v5.4s}, [x2], #16
ld1 {v6.4s}, [x2], #16
ld1 {v7.4s}, [x2]
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
fmul v0.4s, v4.4s, v0.s[0]
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
1: ld1 {v1.4s, v2.4s}, [x1], #32
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
fmla v0.4s, v5.4s, v1.s[0]
fmul v3.4s, v7.4s, v2.s[2]
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
fmla v0.4s, v6.4s, v1.s[1]
fmla v3.4s, v6.4s, v2.s[1]
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
fmla v0.4s, v7.4s, v1.s[2]
fmla v3.4s, v5.4s, v2.s[0]
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
fadd v1.4s, v1.4s, v0.4s
fadd v2.4s, v2.4s, v3.4s
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
fmla v2.4s, v4.4s, v1.s[3]
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
st1 {v1.4s, v2.4s}, [x0], #32
fmul v0.4s, v4.4s, v2.s[3]
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
opusdsp: add ability to modify deemphasis constant xHE-AAC relies on the same postfilter mechanism that Opus uses to improve clarity (albeit with a steeper deemphasis filter). The code to apply it is identical, it's still just a simple IIR low-pass filter. This commit makes it possible to use alternative constants.
2024-01-29 05:31:43 +02:00
subs w3, w3, #8
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
b.gt 1b
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
mov s0, v2.s[3]
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
ret
endfunc
function ff_opus_postfilter_neon, export=1
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
ld1 {v0.4s}, [x2]
dup v1.4s, v0.s[1]
dup v2.4s, v0.s[2]
dup v0.4s, v0.s[0]
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
add w1, w1, #2
sub x1, x0, x1, lsl #2
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
ld1 {v3.4s}, [x1]
fmul v3.4s, v3.4s, v2.4s
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
1: add x1, x1, #4
ld1 {v4.4s}, [x1]
add x1, x1, #4
ld1 {v5.4s}, [x1]
add x1, x1, #4
ld1 {v6.4s}, [x1]
add x1, x1, #4
ld1 {v7.4s}, [x1]
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
fmla v3.4s, v7.4s, v2.4s
fadd v6.4s, v6.4s, v4.4s
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
ld1 {v4.4s}, [x0]
fmla v4.4s, v5.4s, v0.4s
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
fmul v6.4s, v6.4s, v1.4s
fadd v6.4s, v6.4s, v3.4s
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
fadd v4.4s, v4.4s, v6.4s
fmul v3.4s, v7.4s, v2.4s
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
st1 {v4.4s}, [x0], #16
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
aarch64: Reindent all assembly to 8/24 column indentation libavcodec/aarch64/vc1dsp_neon.S is skipped here, as it intentionally uses a layered indentation style to visually show how different unrolled/interleaved phases fit together. Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-17 13:27:17 +02:00
subs w3, w3, #4
b.gt 1b
aarch64/opusdsp: implement NEON accelerated postfilter and deemphasis 153372 UNITS in postfilter_c, 65536 runs, 0 skips 73164 UNITS in postfilter_neon, 65536 runs, 0 skips -> 2.1x speedup 80591 UNITS in deemphasis_c, 131072 runs, 0 skips 43969 UNITS in deemphasis_neon, 131072 runs, 0 skips -> 1.83x speedup Total decoder speedup: ~15% on a Raspberry Pi 3 (from 28.1x to 33.5x realtime) Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } Unlike the x86 version, duplication is used instead of pslldq so the structure and tables are different.
2019-03-15 16:37:31 +02:00
ret
endfunc
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