mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
111 lines
3.3 KiB
111 lines
3.3 KiB
/* |
|
* 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 "pixdesc.h" |
|
|
|
/** |
|
* @file |
|
* various utility functions |
|
*/ |
|
|
|
unsigned avutil_version(void) |
|
{ |
|
static int checks_done; |
|
if (checks_done) |
|
return LIBAVUTIL_VERSION_INT; |
|
|
|
av_assert0(AV_PIX_FMT_VDA_VLD == 81); //check if the pix fmt enum has not had anything inserted or removed by mistake |
|
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); |
|
|
|
if (av_sat_dadd32(1, 2) != 5) { |
|
av_log(NULL, AV_LOG_FATAL, "Libavutil has been build 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"); |
|
} |
|
|
|
ff_check_pixfmt_descriptors(); |
|
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; |
|
}
|
|
|