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avdevice/decklink: add level_a configuration option 

Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
This commit is contained in:
Limin Wang 2021-08-09 08:23:18 +08:00
parent 5f3df7afa6
commit 13460af456
4 changed files with 27 additions and 0 deletions
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5
doc/outdevs.texi
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@ -216,6 +216,11 @@ Enable Square Division Quad Split mode for Quad-link SDI output.
Must be @samp{unset}, @samp{true} or @samp{false}.
Defaults to @option{unset}.
@item level_a
Enable SMPTE Level A mode on the used output.
Must be @samp{unset}, @samp{true} or @samp{false}.
Defaults to @option{unset}.
@end table
@subsection Examples

17
libavdevice/decklink_common.cpp
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@ -230,6 +230,23 @@ int ff_decklink_set_configs(AVFormatContext *avctx,
}
}
if (direction == DIRECTION_OUT && cctx->level_a >= 0) {
DECKLINK_BOOL level_a_supported = false;
if (ctx->attr->GetFlag(BMDDeckLinkSupportsSMPTELevelAOutput, &level_a_supported) != S_OK)
level_a_supported = false;
if (level_a_supported) {
res = ctx->cfg->SetFlag(bmdDeckLinkConfigSMPTELevelAOutput, cctx->level_a);
if (res != S_OK)
av_log(avctx, AV_LOG_WARNING, "Setting SMPTE levelA failed.\n");
else
av_log(avctx, AV_LOG_VERBOSE, "Successfully set SMPTE levelA.\n");
} else {
av_log(avctx, AV_LOG_WARNING, "Unable to set SMPTE levelA mode, because it is not supported.\n");
}
}
return 0;
}

1
libavdevice/decklink_common_c.h
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@ -50,6 +50,7 @@ struct decklink_cctx {
int duplex_mode;
int link;
int sqd;
int level_a;
DecklinkPtsSource audio_pts_source;
DecklinkPtsSource video_pts_source;
int audio_input;

4
libavdevice/decklink_enc_c.c
View File

@ -44,6 +44,10 @@ static const AVOption options[] = {
{ "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = -1 }, 0, 0, ENC, "sqd"},
{ "false" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, "sqd"},
{ "true" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, "sqd"},
{ "level_a" , "set SMPTE LevelA" , OFFSET(level_a) , AV_OPT_TYPE_INT, { .i64 = -1 }, -1,1, ENC, "level_a"},
{ "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = -1 }, 0, 0, ENC, "level_a"},
{ "false" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, "level_a"},
{ "true" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, "level_a"},
{ "timing_offset", "genlock timing pixel offset", OFFSET(timing_offset), AV_OPT_TYPE_INT, { .i64 = INT_MIN }, INT_MIN, INT_MAX, ENC, "timing_offset"},
{ "unset" , NULL , 0 , AV_OPT_TYPE_CONST, { .i64 = INT_MIN }, 0, 0, ENC, "timing_offset"},
{ NULL },