Function ff_fdctdsp_init

libavcodec/fdctdsp.c:25–52

#include "config.h"

av_cold void ff_fdctdsp_init(FDCTDSPContext *c, AVCodecContext *avctx)
{
    av_unused const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;

    if (avctx->bits_per_raw_sample == 10 || avctx->bits_per_raw_sample == 9) {
        c->fdct    = ff_jpeg_fdct_islow_10;
        c->fdct248 = ff_fdct248_islow_10;
    } else if (avctx->dct_algo == FF_DCT_FASTINT) {
        c->fdct    = ff_fdct_ifast;
        c->fdct248 = ff_fdct_ifast248;
#if CONFIG_FAANDCT
    } else if (avctx->dct_algo == FF_DCT_FAAN) {
        c->fdct    = ff_faandct;
        c->fdct248 = ff_faandct248;
#endif /* CONFIG_FAANDCT */
    } else {
        c->fdct    = ff_jpeg_fdct_islow_8; // slow/accurate/default
        c->fdct248 = ff_fdct248_islow_8;
    }

#if ARCH_AARCH64
    ff_fdctdsp_init_aarch64(c, avctx, high_bit_depth);
#elif ARCH_PPC
    ff_fdctdsp_init_ppc(c, avctx, high_bit_depth);
#elif ARCH_X86
    ff_fdctdsp_init_x86(c, avctx, high_bit_depth);
#endif
}