2 * Copyright (c) 2014 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
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.
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.
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
24 #include "pixblockdsp.h"
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
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"},
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"},
52 {"sh4", "experimental / for debugging", 0, AV_OPT_TYPE_CONST
, {.i64
= FF_IDCT_SH4
}, INT_MIN
, INT_MAX
, V
|E
|D
, "idct"},
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"},
59 {"simplealpha", "experimental / for debugging", 0, AV_OPT_TYPE_CONST
, {.i64
= FF_IDCT_SIMPLEALPHA
}, INT_MIN
, INT_MAX
, V
|E
|D
, "idct"},
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"},
69 static const AVClass avdct_class
= {
70 .class_name
= "AVDCT",
71 .option
= avdct_options
,
72 .version
= LIBAVUTIL_VERSION_INT
,
75 const AVClass
*avcodec_dct_get_class(void)
80 AVDCT
*avcodec_dct_alloc(void)
82 AVDCT
*dsp
= av_mallocz(sizeof(AVDCT
));
87 dsp
->av_class
= &avdct_class
;
88 av_opt_set_defaults(dsp
);
93 int avcodec_dct_init(AVDCT
*dsp
)
95 AVCodecContext
*avctx
= avcodec_alloc_context3(NULL
);
98 return AVERROR(ENOMEM
);
100 avctx
->idct_algo
= dsp
->idct_algo
;
101 avctx
->dct_algo
= dsp
->dct_algo
;
103 #define COPY(src, name) memcpy(&dsp->name, &src.name, sizeof(dsp->name))
108 ff_idctdsp_init(&idsp
, avctx
);
110 COPY(idsp
, idct_permutation
);
117 ff_fdctdsp_init(&fdsp
, avctx
);
122 #if CONFIG_PIXBLOCKDSP
124 PixblockDSPContext pdsp
;
125 ff_pixblockdsp_init(&pdsp
, avctx
);
126 COPY(pdsp
, get_pixels
);
130 avcodec_close(avctx
);