libavcodec/riscv/vc1dsp_init.c

   1 /*
   2  * Copyright (c) 2023 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 <stdint.h>
  22
  23 #include "libavutil/attributes.h"
  24 #include "libavutil/cpu.h"
  25 #include "libavutil/riscv/cpu.h"
  26 #include "libavcodec/vc1.h"
  27
  28 void ff_vc1_inv_trans_8x8_dc_rvv(uint8_t *dest, ptrdiff_t stride, int16_t *block);
  29 void ff_vc1_inv_trans_4x8_dc_rvv(uint8_t *dest, ptrdiff_t stride, int16_t *block);
  30 void ff_vc1_inv_trans_8x4_dc_rvv(uint8_t *dest, ptrdiff_t stride, int16_t *block);
  31 void ff_vc1_inv_trans_4x4_dc_rvv(uint8_t *dest, ptrdiff_t stride, int16_t *block);
  32 void ff_put_pixels16x16_rvi(uint8_t *dst, const uint8_t *src, ptrdiff_t line_size, int rnd);
  33 void ff_put_pixels8x8_rvi(uint8_t *dst, const uint8_t *src, ptrdiff_t line_size, int rnd);
  34 void ff_avg_pixels16x16_rvv(uint8_t *dst, const uint8_t *src, ptrdiff_t line_size, int rnd);
  35 void ff_avg_pixels8x8_rvv(uint8_t *dst, const uint8_t *src, ptrdiff_t line_size, int rnd);
  36 int ff_startcode_find_candidate_rvb(const uint8_t *, int);
  37 int ff_startcode_find_candidate_rvv(const uint8_t *, int);
  38 int ff_vc1_unescape_buffer_rvv(const uint8_t *, int, uint8_t *);
  39
  40 av_cold void ff_vc1dsp_init_riscv(VC1DSPContext *dsp)
  41 {
  42 #if HAVE_RV
  43     int flags = av_get_cpu_flags();
  44
  45 # if __riscv_xlen >= 64
  46     if (flags & AV_CPU_FLAG_RVI) {
  47         dsp->put_vc1_mspel_pixels_tab[1][0] = ff_put_pixels8x8_rvi;
  48         dsp->put_vc1_mspel_pixels_tab[0][0] = ff_put_pixels16x16_rvi;
  49     }
  50 # endif
  51     if (flags & AV_CPU_FLAG_RVB_BASIC)
  52         dsp->startcode_find_candidate = ff_startcode_find_candidate_rvb;
  53 # if HAVE_RVV
  54     if (flags & AV_CPU_FLAG_RVV_I32) {
  55         if (ff_rv_vlen_least(128)) {
  56             dsp->vc1_inv_trans_4x8_dc = ff_vc1_inv_trans_4x8_dc_rvv;
  57             dsp->vc1_inv_trans_4x4_dc = ff_vc1_inv_trans_4x4_dc_rvv;
  58             dsp->avg_vc1_mspel_pixels_tab[0][0] = ff_avg_pixels16x16_rvv;
  59             if (flags & AV_CPU_FLAG_RVV_I64) {
  60                 dsp->vc1_inv_trans_8x8_dc = ff_vc1_inv_trans_8x8_dc_rvv;
  61                 dsp->vc1_inv_trans_8x4_dc = ff_vc1_inv_trans_8x4_dc_rvv;
  62                 dsp->avg_vc1_mspel_pixels_tab[1][0] = ff_avg_pixels8x8_rvv;
  63             }
  64         }
  65         dsp->startcode_find_candidate = ff_startcode_find_candidate_rvv;
  66         dsp->vc1_unescape_buffer = ff_vc1_unescape_buffer_rvv;
  67     }
  68 # endif
  69 #endif
  70 }