media/ffvpx/libavcodec/fdctdsp.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * FFmpeg is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with FFmpeg; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include "libavutil/attributes.h"
  20 #include "avcodec.h"
  21 #include "faandct.h"
  22 #include "fdctdsp.h"
  23 #include "config.h"
  24
  25 av_cold void ff_fdctdsp_init(FDCTDSPContext *c, AVCodecContext *avctx)
  26 {
  27     av_unused const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;
  28
  29     if (avctx->bits_per_raw_sample == 10 || avctx->bits_per_raw_sample == 9) {
  30         c->fdct    = ff_jpeg_fdct_islow_10;
  31         c->fdct248 = ff_fdct248_islow_10;
  32     } else if (avctx->dct_algo == FF_DCT_FASTINT) {
  33         c->fdct    = ff_fdct_ifast;
  34         c->fdct248 = ff_fdct_ifast248;
  35 #if CONFIG_FAANDCT
  36     } else if (avctx->dct_algo == FF_DCT_FAAN) {
  37         c->fdct    = ff_faandct;
  38         c->fdct248 = ff_faandct248;
  39 #endif /* CONFIG_FAANDCT */
  40     } else {
  41         c->fdct    = ff_jpeg_fdct_islow_8; // slow/accurate/default
  42         c->fdct248 = ff_fdct248_islow_8;
  43     }
  44
  45 #if ARCH_PPC
  46     ff_fdctdsp_init_ppc(c, avctx, high_bit_depth);
  47 #elif ARCH_X86
  48     ff_fdctdsp_init_x86(c, avctx, high_bit_depth);
  49 #endif
  50 }