| 1 | /* |
| 2 | * This file is part of FFmpeg. |
| 3 | * |
| 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. |
| 8 | * |
| 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. |
| 13 | * |
| 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 |
| 17 | */ |
| 18 | |
| 19 | #include "config.h" |
| 20 | #include "avutil.h" |
| 21 | #include "avassert.h" |
| 22 | #include "samplefmt.h" |
| 23 | #include "pixdesc.h" |
| 24 | |
| 25 | /** |
| 26 | * @file |
| 27 | * various utility functions |
| 28 | */ |
| 29 | |
| 30 | #include "libavutil/ffversion.h" |
| 31 | const char av_util_ffversion[] = "FFmpeg version " FFMPEG_VERSION; |
| 32 | |
| 33 | unsigned avutil_version(void) |
| 34 | { |
| 35 | static int checks_done; |
| 36 | if (checks_done) |
| 37 | return LIBAVUTIL_VERSION_INT; |
| 38 | |
| 39 | av_assert0(AV_PIX_FMT_VDA_VLD == 81); //check if the pix fmt enum has not had anything inserted or removed by mistake |
| 40 | av_assert0(AV_SAMPLE_FMT_DBLP == 9); |
| 41 | av_assert0(AVMEDIA_TYPE_ATTACHMENT == 4); |
| 42 | av_assert0(AV_PICTURE_TYPE_BI == 7); |
| 43 | av_assert0(LIBAVUTIL_VERSION_MICRO >= 100); |
| 44 | av_assert0(HAVE_MMX2 == HAVE_MMXEXT); |
| 45 | |
| 46 | av_assert0(((size_t)-1) > 0); // C guarantees this but if false on a platform we care about revert at least b284e1ffe343d6697fb950d1ee517bafda8a9844 |
| 47 | |
| 48 | if (av_sat_dadd32(1, 2) != 5) { |
| 49 | av_log(NULL, AV_LOG_FATAL, "Libavutil has been build with a broken binutils, please upgrade binutils and rebuild\n"); |
| 50 | abort(); |
| 51 | } |
| 52 | |
| 53 | if (llrint(1LL<<60) != 1LL<<60) { |
| 54 | av_log(NULL, AV_LOG_ERROR, "Libavutil has been linked to a broken llrint()\n"); |
| 55 | } |
| 56 | |
| 57 | #if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 0 |
| 58 | ff_check_pixfmt_descriptors(); |
| 59 | #endif |
| 60 | checks_done = 1; |
| 61 | return LIBAVUTIL_VERSION_INT; |
| 62 | } |
| 63 | |
| 64 | const char *avutil_configuration(void) |
| 65 | { |
| 66 | return FFMPEG_CONFIGURATION; |
| 67 | } |
| 68 | |
| 69 | const char *avutil_license(void) |
| 70 | { |
| 71 | #define LICENSE_PREFIX "libavutil license: " |
| 72 | return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; |
| 73 | } |
| 74 | |
| 75 | const char *av_get_media_type_string(enum AVMediaType media_type) |
| 76 | { |
| 77 | switch (media_type) { |
| 78 | case AVMEDIA_TYPE_VIDEO: return "video"; |
| 79 | case AVMEDIA_TYPE_AUDIO: return "audio"; |
| 80 | case AVMEDIA_TYPE_DATA: return "data"; |
| 81 | case AVMEDIA_TYPE_SUBTITLE: return "subtitle"; |
| 82 | case AVMEDIA_TYPE_ATTACHMENT: return "attachment"; |
| 83 | default: return NULL; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | char av_get_picture_type_char(enum AVPictureType pict_type) |
| 88 | { |
| 89 | switch (pict_type) { |
| 90 | case AV_PICTURE_TYPE_I: return 'I'; |
| 91 | case AV_PICTURE_TYPE_P: return 'P'; |
| 92 | case AV_PICTURE_TYPE_B: return 'B'; |
| 93 | case AV_PICTURE_TYPE_S: return 'S'; |
| 94 | case AV_PICTURE_TYPE_SI: return 'i'; |
| 95 | case AV_PICTURE_TYPE_SP: return 'p'; |
| 96 | case AV_PICTURE_TYPE_BI: return 'b'; |
| 97 | default: return '?'; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | unsigned av_int_list_length_for_size(unsigned elsize, |
| 102 | const void *list, uint64_t term) |
| 103 | { |
| 104 | unsigned i; |
| 105 | |
| 106 | if (!list) |
| 107 | return 0; |
| 108 | #define LIST_LENGTH(type) \ |
| 109 | { type t = term, *l = (type *)list; for (i = 0; l[i] != t; i++); } |
| 110 | switch (elsize) { |
| 111 | case 1: LIST_LENGTH(uint8_t); break; |
| 112 | case 2: LIST_LENGTH(uint16_t); break; |
| 113 | case 4: LIST_LENGTH(uint32_t); break; |
| 114 | case 8: LIST_LENGTH(uint64_t); break; |
| 115 | default: av_assert0(!"valid element size"); |
| 116 | } |
| 117 | return i; |
| 118 | } |
| 119 | |
| 120 | AVRational av_get_time_base_q(void) |
| 121 | { |
| 122 | return (AVRational){1, AV_TIME_BASE}; |
| 123 | } |