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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * This file is part of FFmpeg. |
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| 3 | * |
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| 4 | * FFmpeg is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Lesser General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2.1 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * FFmpeg is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Lesser General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Lesser General Public |
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| 15 | * License along with FFmpeg; if not, write to the Free Software |
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| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 17 | */ |
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| 18 | |||
| 19 | #include "config.h" |
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| 20 | #include "avutil.h" |
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| 21 | #include "avassert.h" |
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| 22 | #include "samplefmt.h" |
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| 23 | #include "pixdesc.h" |
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| 24 | |||
| 25 | /** |
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| 26 | * @file |
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| 27 | * various utility functions |
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| 28 | */ |
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| 29 | |||
| 30 | unsigned avutil_version(void) |
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| 31 | { |
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| 32 | static int checks_done; |
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| 33 | if (checks_done) |
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| 34 | return LIBAVUTIL_VERSION_INT; |
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| 35 | |||
| 36 | av_assert0(AV_PIX_FMT_VDA_VLD == 81); //check if the pix fmt enum has not had anything inserted or removed by mistake |
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| 37 | av_assert0(AV_SAMPLE_FMT_DBLP == 9); |
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| 38 | av_assert0(AVMEDIA_TYPE_ATTACHMENT == 4); |
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| 39 | av_assert0(AV_PICTURE_TYPE_BI == 7); |
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| 40 | av_assert0(LIBAVUTIL_VERSION_MICRO >= 100); |
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| 41 | av_assert0(HAVE_MMX2 == HAVE_MMXEXT); |
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| 42 | |||
| 43 | av_assert0(((size_t)-1) > 0); // C gurantees this but if false on a platform we care about revert at least b284e1ffe343d6697fb950d1ee517bafda8a9844 |
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| 44 | |||
| 45 | if (av_sat_dadd32(1, 2) != 5) { |
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| 46 | av_log(NULL, AV_LOG_FATAL, "Libavutil has been build with a broken binutils, please upgrade binutils and rebuild\n"); |
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| 47 | abort(); |
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| 48 | } |
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| 49 | |||
| 50 | if (llrint(1LL<<60) != 1LL<<60) { |
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| 51 | av_log(NULL, AV_LOG_ERROR, "Libavutil has been linked to a broken llrint()\n"); |
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| 52 | } |
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| 53 | |||
| 54 | ff_check_pixfmt_descriptors(); |
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| 55 | checks_done = 1; |
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| 56 | return LIBAVUTIL_VERSION_INT; |
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| 57 | } |
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| 58 | |||
| 59 | const char *avutil_configuration(void) |
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| 60 | { |
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| 61 | return FFMPEG_CONFIGURATION; |
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| 62 | } |
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| 63 | |||
| 64 | const char *avutil_license(void) |
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| 65 | { |
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| 66 | #define LICENSE_PREFIX "libavutil license: " |
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| 67 | return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; |
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| 68 | } |
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| 69 | |||
| 70 | const char *av_get_media_type_string(enum AVMediaType media_type) |
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| 71 | { |
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| 72 | switch (media_type) { |
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| 73 | case AVMEDIA_TYPE_VIDEO: return "video"; |
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| 74 | case AVMEDIA_TYPE_AUDIO: return "audio"; |
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| 75 | case AVMEDIA_TYPE_DATA: return "data"; |
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| 76 | case AVMEDIA_TYPE_SUBTITLE: return "subtitle"; |
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| 77 | case AVMEDIA_TYPE_ATTACHMENT: return "attachment"; |
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| 78 | default: return NULL; |
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| 79 | } |
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| 80 | } |
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| 81 | |||
| 82 | char av_get_picture_type_char(enum AVPictureType pict_type) |
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| 83 | { |
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| 84 | switch (pict_type) { |
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| 85 | case AV_PICTURE_TYPE_I: return 'I'; |
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| 86 | case AV_PICTURE_TYPE_P: return 'P'; |
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| 87 | case AV_PICTURE_TYPE_B: return 'B'; |
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| 88 | case AV_PICTURE_TYPE_S: return 'S'; |
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| 89 | case AV_PICTURE_TYPE_SI: return 'i'; |
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| 90 | case AV_PICTURE_TYPE_SP: return 'p'; |
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| 91 | case AV_PICTURE_TYPE_BI: return 'b'; |
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| 92 | default: return '?'; |
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| 93 | } |
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| 94 | } |
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| 95 | |||
| 96 | unsigned av_int_list_length_for_size(unsigned elsize, |
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| 97 | const void *list, uint64_t term) |
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| 98 | { |
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| 99 | unsigned i; |
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| 100 | |||
| 101 | if (!list) |
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| 102 | return 0; |
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| 103 | #define LIST_LENGTH(type) \ |
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| 104 | { type t = term, *l = (type *)list; for (i = 0; l[i] != t; i++); } |
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| 105 | switch (elsize) { |
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| 106 | case 1: LIST_LENGTH(uint8_t); break; |
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| 107 | case 2: LIST_LENGTH(uint16_t); break; |
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| 108 | case 4: LIST_LENGTH(uint32_t); break; |
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| 109 | case 8: LIST_LENGTH(uint64_t); break; |
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| 110 | default: av_assert0(!"valid element size"); |
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| 111 | } |
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| 112 | return i; |
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| 113 | } |