1/* 2 * Copyright (c) 2014 Michael Niedermayer <michaelni@gmx.at> 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 "avcodec.h" 22#include "idctdsp.h" 23#include "fdctdsp.h" 24#include "pixblockdsp.h" 25#include "avdct.h" 26 27#define OFFSET(x) offsetof(AVDCT,x) 28#define DEFAULT 0 //should be NAN but it does not work as it is not a constant in glibc as required by ANSI/ISO C 29//these names are too long to be readable 30#define V AV_OPT_FLAG_VIDEO_PARAM 31#define A AV_OPT_FLAG_AUDIO_PARAM 32#define E AV_OPT_FLAG_ENCODING_PARAM 33#define D AV_OPT_FLAG_DECODING_PARAM 34 35static const AVOption avdct_options[] = { 36{"dct", "DCT algorithm", OFFSET(dct_algo), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|E, "dct"}, 37{"auto", "autoselect a good one", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_AUTO }, INT_MIN, INT_MAX, V|E, "dct"}, 38{"fastint", "fast integer (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_FASTINT }, INT_MIN, INT_MAX, V|E, "dct"}, 39{"int", "accurate integer", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_INT }, INT_MIN, INT_MAX, V|E, "dct"}, 40{"mmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_MMX }, INT_MIN, INT_MAX, V|E, "dct"}, 41{"altivec", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_ALTIVEC }, INT_MIN, INT_MAX, V|E, "dct"}, 42{"faan", "floating point AAN DCT (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_FAAN }, INT_MIN, INT_MAX, V|E, "dct"}, 43 44{"idct", "select IDCT implementation", OFFSET(idct_algo), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|E|D, "idct"}, 45{"auto", "autoselect a good one", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_AUTO }, INT_MIN, INT_MAX, V|E|D, "idct"}, 46{"int", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_INT }, INT_MIN, INT_MAX, V|E|D, "idct"}, 47{"simple", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLE }, INT_MIN, INT_MAX, V|E|D, "idct"}, 48{"simplemmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEMMX }, INT_MIN, INT_MAX, V|E|D, "idct"}, 49{"arm", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_ARM }, INT_MIN, INT_MAX, V|E|D, "idct"}, 50{"altivec", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_ALTIVEC }, INT_MIN, INT_MAX, V|E|D, "idct"}, 51{"simplearm", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARM }, INT_MIN, INT_MAX, V|E|D, "idct"}, 52{"simplearmv5te", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV5TE }, INT_MIN, INT_MAX, V|E|D, "idct"}, 53{"simplearmv6", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV6 }, INT_MIN, INT_MAX, V|E|D, "idct"}, 54{"simpleneon", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLENEON }, INT_MIN, INT_MAX, V|E|D, "idct"}, 55{"xvid", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVID }, INT_MIN, INT_MAX, V|E|D, "idct"}, 56{"xvidmmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVID }, INT_MIN, INT_MAX, V|E|D, "idct"}, 57{"faani", "floating point AAN IDCT (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_FAAN }, INT_MIN, INT_MAX, V|D|E, "idct"}, 58{"simpleauto", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEAUTO }, INT_MIN, INT_MAX, V|E|D, "idct"}, 59 60{"bits_per_sample", "", OFFSET(bits_per_sample), AV_OPT_TYPE_INT, {.i64 = 8 }, 0, 14, 0,}, 61{NULL}, 62}; 63 64static const AVClass avdct_class = { 65 .class_name = "AVDCT", 66 .option = avdct_options, 67 .version = LIBAVUTIL_VERSION_INT, 68}; 69 70const AVClass *avcodec_dct_get_class(void) 71{ 72 return &avdct_class; 73} 74 75AVDCT *avcodec_dct_alloc(void) 76{ 77 AVDCT *dsp = av_mallocz(sizeof(AVDCT)); 78 79 if (!dsp) 80 return NULL; 81 82 dsp->av_class = &avdct_class; 83 av_opt_set_defaults(dsp); 84 85 return dsp; 86} 87 88int avcodec_dct_init(AVDCT *dsp) 89{ 90 AVCodecContext *avctx = avcodec_alloc_context3(NULL); 91 92 if (!avctx) 93 return AVERROR(ENOMEM); 94 95 avctx->idct_algo = dsp->idct_algo; 96 avctx->dct_algo = dsp->dct_algo; 97 avctx->bits_per_raw_sample = dsp->bits_per_sample; 98 99#define COPY(src, name) memcpy(&dsp->name, &src.name, sizeof(dsp->name)) 100 101#if CONFIG_IDCTDSP 102 { 103 IDCTDSPContext idsp = {0}; 104 ff_idctdsp_init(&idsp, avctx); 105 COPY(idsp, idct); 106 COPY(idsp, idct_permutation); 107 } 108#endif 109 110#if CONFIG_FDCTDSP 111 { 112 FDCTDSPContext fdsp; 113 ff_fdctdsp_init(&fdsp, avctx); 114 COPY(fdsp, fdct); 115 } 116#endif 117 118#if CONFIG_PIXBLOCKDSP 119 { 120 PixblockDSPContext pdsp; 121 ff_pixblockdsp_init(&pdsp, avctx); 122 COPY(pdsp, get_pixels); 123 COPY(pdsp, get_pixels_unaligned); 124 } 125#endif 126 127 avcodec_free_context(&avctx); 128 129 return 0; 130} 131