fdctdsp.c (1833B)
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_AARCH64 46 ff_fdctdsp_init_aarch64(c, avctx, high_bit_depth); 47 #elif ARCH_PPC 48 ff_fdctdsp_init_ppc(c, avctx, high_bit_depth); 49 #elif ARCH_X86 50 ff_fdctdsp_init_x86(c, avctx, high_bit_depth); 51 #endif 52 }