FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/avdct.c
Date: 2025-04-22 22:59:17
Exec Total Coverage
Lines: 23 27 85.2%
Functions: 2 3 66.7%
Branches: 2 4 50.0%
Line Branch Exec Source
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 "libavutil/mem.h"
22 #include "avcodec.h"
23 #include "idctdsp.h"
24 #include "fdctdsp.h"
25 #include "pixblockdsp.h"
26 #include "avdct.h"
27
28 #define OFFSET(x) offsetof(AVDCT,x)
29 #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
30 //these names are too long to be readable
31 #define V AV_OPT_FLAG_VIDEO_PARAM
32 #define A AV_OPT_FLAG_AUDIO_PARAM
33 #define E AV_OPT_FLAG_ENCODING_PARAM
34 #define D AV_OPT_FLAG_DECODING_PARAM
35
36 static const AVOption avdct_options[] = {
37 {"dct", "DCT algorithm", OFFSET(dct_algo), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|E, .unit = "dct"},
38 {"auto", "autoselect a good one", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_AUTO }, INT_MIN, INT_MAX, V|E, .unit = "dct"},
39 {"fastint", "fast integer (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_FASTINT }, INT_MIN, INT_MAX, V|E, .unit = "dct"},
40 {"int", "accurate integer", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_INT }, INT_MIN, INT_MAX, V|E, .unit = "dct"},
41 {"mmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_MMX }, INT_MIN, INT_MAX, V|E, .unit = "dct"},
42 {"altivec", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_ALTIVEC }, INT_MIN, INT_MAX, V|E, .unit = "dct"},
43 {"faan", "floating point AAN DCT (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_DCT_FAAN }, INT_MIN, INT_MAX, V|E, .unit = "dct"},
44
45 {"idct", "select IDCT implementation", OFFSET(idct_algo), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|E|D, .unit = "idct"},
46 {"auto", "autoselect a good one", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_AUTO }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
47 {"int", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_INT }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
48 {"simple", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLE }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
49 {"simplemmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEMMX }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
50 {"arm", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_ARM }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
51 {"altivec", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_ALTIVEC }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
52 {"simplearm", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARM }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
53 {"simplearmv5te", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV5TE }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
54 {"simplearmv6", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV6 }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
55 {"simpleneon", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLENEON }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
56 {"xvid", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVID }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
57 {"xvidmmx", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVID }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
58 {"faani", "floating point AAN IDCT (experimental / for debugging)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_FAAN }, INT_MIN, INT_MAX, V|D|E, .unit = "idct"},
59 {"simpleauto", "experimental / for debugging", 0, AV_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEAUTO }, INT_MIN, INT_MAX, V|E|D, .unit = "idct"},
60
61 {"bits_per_sample", "", OFFSET(bits_per_sample), AV_OPT_TYPE_INT, {.i64 = 8 }, 0, 14, 0,},
62 {NULL},
63 };
64
65 static const AVClass avdct_class = {
66 .class_name = "AVDCT",
67 .option = avdct_options,
68 .version = LIBAVUTIL_VERSION_INT,
69 };
70
71 ✗ const AVClass *avcodec_dct_get_class(void)
72 {
73 ✗ return &avdct_class;
74 }
75
76 2 AVDCT *avcodec_dct_alloc(void)
77 {
78 2 AVDCT *dsp = av_mallocz(sizeof(AVDCT));
79
80
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 2 if (!dsp)
81 ✗ return NULL;
82
83 2 dsp->av_class = &avdct_class;
84 2 av_opt_set_defaults(dsp);
85
86 2 return dsp;
87 }
88
89 1 int avcodec_dct_init(AVDCT *dsp)
90 {
91 1 AVCodecContext *avctx = avcodec_alloc_context3(NULL);
92
93
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 1 if (!avctx)
94 ✗ return AVERROR(ENOMEM);
95
96 1 avctx->idct_algo = dsp->idct_algo;
97 1 avctx->dct_algo = dsp->dct_algo;
98 1 avctx->bits_per_raw_sample = dsp->bits_per_sample;
99
100 #define COPY(src, name) memcpy(&dsp->name, &src.name, sizeof(dsp->name))
101
102 #if CONFIG_IDCTDSP
103 {
104 1 IDCTDSPContext idsp = {0};
105 1 ff_idctdsp_init(&idsp, avctx);
106 1 COPY(idsp, idct);
107 1 COPY(idsp, idct_permutation);
108 }
109 #endif
110
111 #if CONFIG_FDCTDSP
112 {
113 FDCTDSPContext fdsp;
114 1 ff_fdctdsp_init(&fdsp, avctx);
115 1 COPY(fdsp, fdct);
116 }
117 #endif
118
119 #if CONFIG_PIXBLOCKDSP
120 {
121 PixblockDSPContext pdsp;
122 1 ff_pixblockdsp_init(&pdsp, avctx);
123 1 COPY(pdsp, get_pixels);
124 1 COPY(pdsp, get_pixels_unaligned);
125 }
126 #endif
127
128 1 avcodec_free_context(&avctx);
129
130 1 return 0;
131 }
132