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78d16eb452
* commit 'fca3c3b61952aacc45e9ca54d86a762946c21942': hevc: Add AVX2 DC IDCT Mostly noop as we already have that code. In the ASM, code is merged with the exception of SECTION which is kept uppercase for consistency with the rest of the codebase. Still in the ASM, the prototype comment is fixed to honor the '_' added from the original commit. idct_dc_proto() is dropped as it's not used anymore here. Merged-by: Clément Bœsch <cboesch@gopro.com>
124 lines
3.2 KiB
NASM
124 lines
3.2 KiB
NASM
;*******************************************************************************
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;* SIMD-optimized IDCT functions for HEVC decoding
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;* Copyright (c) 2014 Pierre-Edouard LEPERE
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;* Copyright (c) 2014 James Almer
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;*
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;* This file is part of FFmpeg.
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;*
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;* FFmpeg 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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;* FFmpeg 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 FFmpeg; 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/x86/x86util.asm"
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SECTION .text
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; void ff_hevc_idct_HxW_dc_{8,10}_<opt>(int16_t *coeffs)
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; %1 = HxW
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; %2 = number of loops
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; %3 = bitdepth
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%macro IDCT_DC 3
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cglobal hevc_idct_%1x%1_dc_%3, 1, 2, 1, coeff, tmp
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movsx tmpd, word [coeffq]
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add tmpd, (1 << (14 - %3)) + 1
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sar tmpd, (15 - %3)
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movd xm0, tmpd
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SPLATW m0, xm0
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DEFINE_ARGS coeff, cnt
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mov cntd, %2
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.loop:
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mova [coeffq+mmsize*0], m0
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mova [coeffq+mmsize*1], m0
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mova [coeffq+mmsize*2], m0
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mova [coeffq+mmsize*3], m0
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add coeffq, mmsize*8
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mova [coeffq+mmsize*-4], m0
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mova [coeffq+mmsize*-3], m0
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mova [coeffq+mmsize*-2], m0
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mova [coeffq+mmsize*-1], m0
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dec cntd
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jg .loop
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RET
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%endmacro
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; %1 = HxW
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; %2 = bitdepth
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%macro IDCT_DC_NL 2 ; No loop
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cglobal hevc_idct_%1x%1_dc_%2, 1, 2, 1, coeff, tmp
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movsx tmpd, word [coeffq]
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add tmpd, (1 << (14 - %2)) + 1
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sar tmpd, (15 - %2)
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movd m0, tmpd
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SPLATW m0, xm0
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mova [coeffq+mmsize*0], m0
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mova [coeffq+mmsize*1], m0
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mova [coeffq+mmsize*2], m0
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mova [coeffq+mmsize*3], m0
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%if mmsize == 16
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mova [coeffq+mmsize*4], m0
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mova [coeffq+mmsize*5], m0
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mova [coeffq+mmsize*6], m0
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mova [coeffq+mmsize*7], m0
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%endif
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RET
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%endmacro
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; 8-bit
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INIT_MMX mmxext
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IDCT_DC_NL 4, 8
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IDCT_DC 8, 2, 8
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INIT_XMM sse2
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IDCT_DC_NL 8, 8
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IDCT_DC 16, 4, 8
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IDCT_DC 32, 16, 8
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%if HAVE_AVX2_EXTERNAL
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INIT_YMM avx2
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IDCT_DC 16, 2, 8
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IDCT_DC 32, 8, 8
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%endif ;HAVE_AVX2_EXTERNAL
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; 10-bit
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INIT_MMX mmxext
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IDCT_DC_NL 4, 10
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IDCT_DC 8, 2, 10
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INIT_XMM sse2
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IDCT_DC_NL 8, 10
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IDCT_DC 16, 4, 10
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IDCT_DC 32, 16, 10
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%if HAVE_AVX2_EXTERNAL
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INIT_YMM avx2
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IDCT_DC 16, 2, 10
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IDCT_DC 32, 8, 10
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%endif ;HAVE_AVX2_EXTERNAL
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; 12-bit
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INIT_MMX mmxext
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IDCT_DC_NL 4, 12
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IDCT_DC 8, 2, 12
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INIT_XMM sse2
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IDCT_DC_NL 8, 12
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IDCT_DC 16, 4, 12
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IDCT_DC 32, 16, 12
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%if HAVE_AVX2_EXTERNAL
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INIT_YMM avx2
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IDCT_DC 16, 2, 12
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IDCT_DC 32, 8, 12
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%endif ;HAVE_AVX2_EXTERNAL
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