| 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 | |
| 35 | static 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 (default)", 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 (default)", 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 | #if FF_API_ARCH_SH4 |
| 52 | {"sh4", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SH4 }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
| 53 | #endif |
| 54 | {"simplearm", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARM }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
| 55 | {"simplearmv5te", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV5TE }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
| 56 | {"simplearmv6", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV6 }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
| 57 | {"simpleneon", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLENEON }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
| 58 | #if FF_API_ARCH_ALPHA |
| 59 | {"simplealpha", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEALPHA }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
| 60 | #endif |
| 61 | {"ipp", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_IPP }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
| 62 | {"xvid", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVID }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
| 63 | {"xvidmmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVID }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
| 64 | {"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"}, |
| 65 | {"simpleauto", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEAUTO }, INT_MIN, INT_MAX, V|E|D, "idct"}, |
| 66 | {NULL}, |
| 67 | }; |
| 68 | |
| 69 | static const AVClass avdct_class = { |
| 70 | .class_name = "AVDCT", |
| 71 | .option = avdct_options, |
| 72 | .version = LIBAVUTIL_VERSION_INT, |
| 73 | }; |
| 74 | |
| 75 | const AVClass *avcodec_dct_get_class(void) |
| 76 | { |
| 77 | return &avdct_class; |
| 78 | } |
| 79 | |
| 80 | AVDCT *avcodec_dct_alloc(void) |
| 81 | { |
| 82 | AVDCT *dsp = av_mallocz(sizeof(AVDCT)); |
| 83 | |
| 84 | if (!dsp) |
| 85 | return NULL; |
| 86 | |
| 87 | dsp->av_class = &avdct_class; |
| 88 | av_opt_set_defaults(dsp); |
| 89 | |
| 90 | return dsp; |
| 91 | } |
| 92 | |
| 93 | int avcodec_dct_init(AVDCT *dsp) |
| 94 | { |
| 95 | AVCodecContext *avctx = avcodec_alloc_context3(NULL); |
| 96 | |
| 97 | if (!avctx) |
| 98 | return AVERROR(ENOMEM); |
| 99 | |
| 100 | avctx->idct_algo = dsp->idct_algo; |
| 101 | avctx->dct_algo = dsp->dct_algo; |
| 102 | |
| 103 | #define COPY(src, name) memcpy(&dsp->name, &src.name, sizeof(dsp->name)) |
| 104 | |
| 105 | #if CONFIG_IDCTDSP |
| 106 | { |
| 107 | IDCTDSPContext idsp; |
| 108 | ff_idctdsp_init(&idsp, avctx); |
| 109 | COPY(idsp, idct); |
| 110 | COPY(idsp, idct_permutation); |
| 111 | } |
| 112 | #endif |
| 113 | |
| 114 | #if CONFIG_FDCTDSP |
| 115 | { |
| 116 | FDCTDSPContext fdsp; |
| 117 | ff_fdctdsp_init(&fdsp, avctx); |
| 118 | COPY(fdsp, fdct); |
| 119 | } |
| 120 | #endif |
| 121 | |
| 122 | #if CONFIG_PIXBLOCKDSP |
| 123 | { |
| 124 | PixblockDSPContext pdsp; |
| 125 | ff_pixblockdsp_init(&pdsp, avctx); |
| 126 | COPY(pdsp, get_pixels); |
| 127 | } |
| 128 | #endif |
| 129 | |
| 130 | avcodec_close(avctx); |
| 131 | av_free(avctx); |
| 132 | |
| 133 | return 0; |
| 134 | } |