2 * This file is part of FFmpeg.
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.
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.
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
22 #include "samplefmt.h"
27 * various utility functions
30 unsigned avutil_version(void)
32 static int checks_done;
34 return LIBAVUTIL_VERSION_INT;
36 av_assert0(AV_PIX_FMT_VDA_VLD == 81); //check if the pix fmt enum has not had anything inserted or removed by mistake
37 av_assert0(AV_SAMPLE_FMT_DBLP == 9);
38 av_assert0(AVMEDIA_TYPE_ATTACHMENT == 4);
39 av_assert0(AV_PICTURE_TYPE_BI == 7);
40 av_assert0(LIBAVUTIL_VERSION_MICRO >= 100);
41 av_assert0(HAVE_MMX2 == HAVE_MMXEXT);
43 av_assert0(((size_t)-1) > 0); // C gurantees this but if false on a platform we care about revert at least b284e1ffe343d6697fb950d1ee517bafda8a9844
45 if (av_sat_dadd32(1, 2) != 5) {
46 av_log(NULL, AV_LOG_FATAL, "Libavutil has been build with a broken binutils, please upgrade binutils and rebuild\n");
50 if (llrint(1LL<<60) != 1LL<<60) {
51 av_log(NULL, AV_LOG_ERROR, "Libavutil has been linked to a broken llrint()\n");
54 #if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 0
55 ff_check_pixfmt_descriptors();
58 return LIBAVUTIL_VERSION_INT;
61 const char *avutil_configuration(void)
63 return FFMPEG_CONFIGURATION;
66 const char *avutil_license(void)
68 #define LICENSE_PREFIX "libavutil license: "
69 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
72 const char *av_get_media_type_string(enum AVMediaType media_type)
75 case AVMEDIA_TYPE_VIDEO: return "video";
76 case AVMEDIA_TYPE_AUDIO: return "audio";
77 case AVMEDIA_TYPE_DATA: return "data";
78 case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
79 case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
84 char av_get_picture_type_char(enum AVPictureType pict_type)
87 case AV_PICTURE_TYPE_I: return 'I';
88 case AV_PICTURE_TYPE_P: return 'P';
89 case AV_PICTURE_TYPE_B: return 'B';
90 case AV_PICTURE_TYPE_S: return 'S';
91 case AV_PICTURE_TYPE_SI: return 'i';
92 case AV_PICTURE_TYPE_SP: return 'p';
93 case AV_PICTURE_TYPE_BI: return 'b';
98 unsigned av_int_list_length_for_size(unsigned elsize,
99 const void *list, uint64_t term)
105 #define LIST_LENGTH(type) \
106 { type t = term, *l = (type *)list; for (i = 0; l[i] != t; i++); }
108 case 1: LIST_LENGTH(uint8_t); break;
109 case 2: LIST_LENGTH(uint16_t); break;
110 case 4: LIST_LENGTH(uint32_t); break;
111 case 8: LIST_LENGTH(uint64_t); break;
112 default: av_assert0(!"valid element size");