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f3c197b129
Some files currently rely on libavutil/cpu.h to include it for them; yet said file won't use include it any more after the currently deprecated functions are removed, so include attributes.h directly. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
136 lines
4.2 KiB
C
136 lines
4.2 KiB
C
/*
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* Copyright (c) 2010 Mans Rullgard
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* Copyright (c) 2014 James Yu <james.yu@linaro.org>
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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 <arm_neon.h>
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#include "config.h"
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#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#if ARCH_AARCH64
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# include "libavutil/aarch64/cpu.h"
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#elif ARCH_ARM
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# include "libavutil/arm/cpu.h"
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#endif
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#include "libavcodec/mpegvideo.h"
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static void inline ff_dct_unquantize_h263_neon(int qscale, int qadd, int nCoeffs,
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int16_t *block)
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{
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int16x8_t q0s16, q2s16, q3s16, q8s16, q10s16, q11s16, q13s16;
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int16x8_t q14s16, q15s16, qzs16;
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int16x4_t d0s16, d2s16, d3s16, dzs16;
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uint16x8_t q1u16, q9u16;
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uint16x4_t d1u16;
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dzs16 = vdup_n_s16(0);
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qzs16 = vdupq_n_s16(0);
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q15s16 = vdupq_n_s16(qscale << 1);
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q14s16 = vdupq_n_s16(qadd);
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q13s16 = vnegq_s16(q14s16);
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if (nCoeffs > 4) {
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for (; nCoeffs > 8; nCoeffs -= 16, block += 16) {
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q0s16 = vld1q_s16(block);
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q3s16 = vreinterpretq_s16_u16(vcltq_s16(q0s16, qzs16));
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q8s16 = vld1q_s16(block + 8);
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q1u16 = vceqq_s16(q0s16, qzs16);
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q2s16 = vmulq_s16(q0s16, q15s16);
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q11s16 = vreinterpretq_s16_u16(vcltq_s16(q8s16, qzs16));
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q10s16 = vmulq_s16(q8s16, q15s16);
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q3s16 = vbslq_s16(vreinterpretq_u16_s16(q3s16), q13s16, q14s16);
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q11s16 = vbslq_s16(vreinterpretq_u16_s16(q11s16), q13s16, q14s16);
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q2s16 = vaddq_s16(q2s16, q3s16);
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q9u16 = vceqq_s16(q8s16, qzs16);
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q10s16 = vaddq_s16(q10s16, q11s16);
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q0s16 = vbslq_s16(q1u16, q0s16, q2s16);
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q8s16 = vbslq_s16(q9u16, q8s16, q10s16);
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vst1q_s16(block, q0s16);
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vst1q_s16(block + 8, q8s16);
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}
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}
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if (nCoeffs <= 0)
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return;
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d0s16 = vld1_s16(block);
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d3s16 = vreinterpret_s16_u16(vclt_s16(d0s16, dzs16));
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d1u16 = vceq_s16(d0s16, dzs16);
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d2s16 = vmul_s16(d0s16, vget_high_s16(q15s16));
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d3s16 = vbsl_s16(vreinterpret_u16_s16(d3s16),
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vget_high_s16(q13s16), vget_high_s16(q14s16));
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d2s16 = vadd_s16(d2s16, d3s16);
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d0s16 = vbsl_s16(d1u16, d0s16, d2s16);
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vst1_s16(block, d0s16);
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}
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static void dct_unquantize_h263_inter_neon(MpegEncContext *s, int16_t *block,
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int n, int qscale)
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{
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int nCoeffs = s->inter_scantable.raster_end[s->block_last_index[n]];
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int qadd = (qscale - 1) | 1;
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ff_dct_unquantize_h263_neon(qscale, qadd, nCoeffs + 1, block);
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}
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static void dct_unquantize_h263_intra_neon(MpegEncContext *s, int16_t *block,
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int n, int qscale)
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{
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int qadd;
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int nCoeffs, blk0;
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if (!s->h263_aic) {
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if (n < 4)
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block[0] *= s->y_dc_scale;
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else
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block[0] *= s->c_dc_scale;
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qadd = (qscale - 1) | 1;
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} else {
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qadd = 0;
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}
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if (s->ac_pred) {
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nCoeffs = 63;
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} else {
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nCoeffs = s->inter_scantable.raster_end[s->block_last_index[n]];
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if (nCoeffs <= 0)
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return;
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}
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blk0 = block[0];
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ff_dct_unquantize_h263_neon(qscale, qadd, nCoeffs + 1, block);
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block[0] = blk0;
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}
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av_cold void ff_mpv_common_init_neon(MpegEncContext *s)
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{
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int cpu_flags = av_get_cpu_flags();
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if (have_neon(cpu_flags)) {
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s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_neon;
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s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_neon;
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}
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}
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