libavcodec/riscv/rv34dsp_init.c

   1 /*
   2  * Copyright (c) 2024 Institue of Software Chinese Academy of Sciences (ISCAS).
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include "libavutil/attributes.h"
  24 #include "libavutil/cpu.h"
  25 #include "libavutil/riscv/cpu.h"
  26 #include "libavcodec/rv34dsp.h"
  27
  28 void ff_rv34_inv_transform_dc_rvv(int16_t *block);
  29 void ff_rv34_idct_dc_add_rvv(uint8_t *dst, ptrdiff_t stride, int dc);
  30
  31 av_cold void ff_rv34dsp_init_riscv(RV34DSPContext *c)
  32 {
  33 #if HAVE_RVV
  34     int flags = av_get_cpu_flags();
  35
  36     if (flags & AV_CPU_FLAG_RVV_I32 && ff_rv_vlen_least(128)) {
  37         c->rv34_inv_transform_dc = ff_rv34_inv_transform_dc_rvv;
  38         c->rv34_idct_dc_add = ff_rv34_idct_dc_add_rvv;
  39     }
  40 #endif
  41 }