tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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idctdsp_init_aarch64.c (2219B)

      1 /*
      2 * ARM-NEON-optimized IDCT functions
      3 * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
      4 * Copyright (c) 2017 Matthieu Bouron <matthieu.bouron@gmail.com>
      5 *
      6 * This file is part of FFmpeg.
      7 *
      8 * FFmpeg is free software; you can redistribute it and/or
      9 * modify it under the terms of the GNU Lesser General Public
     10 * License as published by the Free Software Foundation; either
     11 * version 2.1 of the License, or (at your option) any later version.
     12 *
     13 * FFmpeg is distributed in the hope that it will be useful,
     14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16 * Lesser General Public License for more details.
     17 *
     18 * You should have received a copy of the GNU Lesser General Public
     19 * License along with FFmpeg; if not, write to the Free Software
     20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     21 */
     22 
     23 #include "libavutil/attributes.h"
     24 #include "libavutil/cpu.h"
     25 #include "libavutil/aarch64/cpu.h"
     26 #include "libavcodec/avcodec.h"
     27 #include "libavcodec/idctdsp.h"
     28 #include "idct.h"
     29 
     30 void ff_put_pixels_clamped_neon(const int16_t *, uint8_t *, ptrdiff_t);
     31 void ff_put_signed_pixels_clamped_neon(const int16_t *, uint8_t *, ptrdiff_t);
     32 void ff_add_pixels_clamped_neon(const int16_t *, uint8_t *, ptrdiff_t);
     33 
     34 av_cold void ff_idctdsp_init_aarch64(IDCTDSPContext *c, AVCodecContext *avctx,
     35                                     unsigned high_bit_depth)
     36 {
     37    int cpu_flags = av_get_cpu_flags();
     38 
     39    if (have_neon(cpu_flags)) {
     40        if (!avctx->lowres && !high_bit_depth) {
     41            if (avctx->idct_algo == FF_IDCT_AUTO ||
     42                avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
     43                avctx->idct_algo == FF_IDCT_SIMPLENEON) {
     44                c->idct_put  = ff_simple_idct_put_neon;
     45                c->idct_add  = ff_simple_idct_add_neon;
     46                c->idct      = ff_simple_idct_neon;
     47                c->perm_type = FF_IDCT_PERM_PARTTRANS;
     48            }
     49        }
     50 
     51        c->add_pixels_clamped        = ff_add_pixels_clamped_neon;
     52        c->put_pixels_clamped        = ff_put_pixels_clamped_neon;
     53        c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_neon;
     54    }
     55 }