| /* |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "config.h" |
| #include "avutil.h" |
| #include "avassert.h" |
| #include "samplefmt.h" |
| #include "internal.h" |
| |
| /** |
| * @file |
| * various utility functions |
| */ |
| |
| #include "libavutil/ffversion.h" |
| const char av_util_ffversion[] = "FFmpeg version " FFMPEG_VERSION; |
| |
| const char *av_version_info(void) |
| { |
| return FFMPEG_VERSION; |
| } |
| |
| unsigned avutil_version(void) |
| { |
| static int checks_done; |
| if (checks_done) |
| return LIBAVUTIL_VERSION_INT; |
| |
| #if FF_API_VDPAU |
| av_assert0(AV_PIX_FMT_VDA_VLD == 81); //check if the pix fmt enum has not had anything inserted or removed by mistake |
| #endif |
| av_assert0(AV_SAMPLE_FMT_DBLP == 9); |
| av_assert0(AVMEDIA_TYPE_ATTACHMENT == 4); |
| av_assert0(AV_PICTURE_TYPE_BI == 7); |
| av_assert0(LIBAVUTIL_VERSION_MICRO >= 100); |
| av_assert0(HAVE_MMX2 == HAVE_MMXEXT); |
| |
| av_assert0(((size_t)-1) > 0); // C guarantees this but if false on a platform we care about revert at least b284e1ffe343d6697fb950d1ee517bafda8a9844 |
| |
| if (av_sat_dadd32(1, 2) != 5) { |
| av_log(NULL, AV_LOG_FATAL, "Libavutil has been built with a broken binutils, please upgrade binutils and rebuild\n"); |
| abort(); |
| } |
| |
| if (llrint(1LL<<60) != 1LL<<60) { |
| av_log(NULL, AV_LOG_ERROR, "Libavutil has been linked to a broken llrint()\n"); |
| } |
| |
| checks_done = 1; |
| return LIBAVUTIL_VERSION_INT; |
| } |
| |
| const char *avutil_configuration(void) |
| { |
| return FFMPEG_CONFIGURATION; |
| } |
| |
| const char *avutil_license(void) |
| { |
| #define LICENSE_PREFIX "libavutil license: " |
| return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; |
| } |
| |
| const char *av_get_media_type_string(enum AVMediaType media_type) |
| { |
| switch (media_type) { |
| case AVMEDIA_TYPE_VIDEO: return "video"; |
| case AVMEDIA_TYPE_AUDIO: return "audio"; |
| case AVMEDIA_TYPE_DATA: return "data"; |
| case AVMEDIA_TYPE_SUBTITLE: return "subtitle"; |
| case AVMEDIA_TYPE_ATTACHMENT: return "attachment"; |
| default: return NULL; |
| } |
| } |
| |
| char av_get_picture_type_char(enum AVPictureType pict_type) |
| { |
| switch (pict_type) { |
| case AV_PICTURE_TYPE_I: return 'I'; |
| case AV_PICTURE_TYPE_P: return 'P'; |
| case AV_PICTURE_TYPE_B: return 'B'; |
| case AV_PICTURE_TYPE_S: return 'S'; |
| case AV_PICTURE_TYPE_SI: return 'i'; |
| case AV_PICTURE_TYPE_SP: return 'p'; |
| case AV_PICTURE_TYPE_BI: return 'b'; |
| default: return '?'; |
| } |
| } |
| |
| unsigned av_int_list_length_for_size(unsigned elsize, |
| const void *list, uint64_t term) |
| { |
| unsigned i; |
| |
| if (!list) |
| return 0; |
| #define LIST_LENGTH(type) \ |
| { type t = term, *l = (type *)list; for (i = 0; l[i] != t; i++); } |
| switch (elsize) { |
| case 1: LIST_LENGTH(uint8_t); break; |
| case 2: LIST_LENGTH(uint16_t); break; |
| case 4: LIST_LENGTH(uint32_t); break; |
| case 8: LIST_LENGTH(uint64_t); break; |
| default: av_assert0(!"valid element size"); |
| } |
| return i; |
| } |
| |
| AVRational av_get_time_base_q(void) |
| { |
| return (AVRational){1, AV_TIME_BASE}; |
| } |