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avutil/avutil_version: Run checks just once

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This ensures that applications that call avutil_version() often
would not run the checls every time

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2013-04-16 15:22:56 +02:00
parent 65efa1dbd9
commit e701cd96c2
1 changed files with 5 additions and 1 deletions
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6
libavutil/utils.c
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@ -29,6 +29,10 @@
unsigned avutil_version(void) 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_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(AV_SAMPLE_FMT_DBLP == 9);
av_assert0(AVMEDIA_TYPE_ATTACHMENT == 4); av_assert0(AVMEDIA_TYPE_ATTACHMENT == 4);
@ -42,7 +46,7 @@ unsigned avutil_version(void)
} }
ff_check_pixfmt_descriptors(); ff_check_pixfmt_descriptors();
checks_done = 1;
return LIBAVUTIL_VERSION_INT; return LIBAVUTIL_VERSION_INT;
} }