mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/*
|
|
* 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);
|
|
|
|
av_assert0(((size_t)-1) > 0); // C gurantees 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 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");
|
|
}
|
|
|
|
#if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 0
|
|
ff_check_pixfmt_descriptors();
|
|
#endif
|
|
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;
|
|
}
|