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lavc: clarify meaning of avctx.level option

This commit is contained in:
Stefano Sabatini 2023-08-26 02:34:06 +02:00
parent f7ac3512f5
commit 6f421d9d4e
3 changed files with 9 additions and 4 deletions
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5
doc/codecs.texi
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@ -697,10 +697,13 @@ profiles are documented in the relevant encoder documentation.
@item level @var{integer} (@emph{encoding,audio,video})
Set the encoder level. This level depends on the specific codec, and
might correspond to the profile level. It is set by default to
@samp{unknown}.
Possible values:
@table @samp
@item unknown
@end table
@item lowres @var{integer} (@emph{decoding,audio,video})

6
libavcodec/avcodec.h
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@ -1730,8 +1730,10 @@ typedef struct AVCodecContext {
#endif
/**
* level
* - encoding: Set by user.
* Encoding level descriptor.
* - encoding: Set by user, corresponds to a specific level defined by the
* codec, usually corresponding to the profile level, if not specified it
* is set to FF_LEVEL_UNKNOWN.
* - decoding: Set by libavcodec.
* See AV_LEVEL_* in defs.h.
*/

2
libavcodec/options_table.h
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@ -226,7 +226,7 @@ static const AVOption avcodec_options[] = {
{"profile", NULL, OFFSET(profile), AV_OPT_TYPE_INT, {.i64 = AV_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, V|A|E|CC, "avctx.profile"},
{"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AV_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, V|A|E, "avctx.profile"},
{"main10", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AV_PROFILE_HEVC_MAIN_10 }, INT_MIN, INT_MAX, V|E, "avctx.profile"},
{"level", NULL, OFFSET(level), AV_OPT_TYPE_INT, {.i64 = FF_LEVEL_UNKNOWN }, INT_MIN, INT_MAX, V|A|E|CC, "avctx.level"},
{"level", "encoding level, usually corresponding to the profile level, codec-specific", OFFSET(level), AV_OPT_TYPE_INT, {.i64 = FF_LEVEL_UNKNOWN }, INT_MIN, INT_MAX, V|A|E|CC, "avctx.level"},
{"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_LEVEL_UNKNOWN }, INT_MIN, INT_MAX, V|A|E, "avctx.level"},
{"lowres", "decode at 1= 1/2, 2=1/4, 3=1/8 resolutions", OFFSET(lowres), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, V|A|D},
{"cmp", "full-pel ME compare function", OFFSET(me_cmp), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E, "cmp_func"},