[FFmpeg-devel] [PATCH v3 3/4] avdevice/decklink: add level_a configure

[Marton Balint]

On Tue, 10 Aug 2021, lance.lmwang at gmail.com wrote:

> From: Limin Wang <lance.lmwang at gmail.com>
>
> Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
> ---
> doc/outdevs.texi                |  5 +++++
> libavdevice/decklink_common.cpp | 17 +++++++++++++++++
> libavdevice/decklink_common_c.h |  1 +
> libavdevice/decklink_enc_c.c    |  4 ++++
> 4 files changed, 27 insertions(+)
>
> diff --git a/doc/outdevs.texi b/doc/outdevs.texi
> index e3e88b2..cc0c94a 100644
> --- a/doc/outdevs.texi
> +++ b/doc/outdevs.texi
> @@ -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}.
>
> + at 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
> diff --git a/libavdevice/decklink_common.cpp b/libavdevice/decklink_common.cpp
> index a892a6c..0569462 100644
> --- a/libavdevice/decklink_common.cpp
> +++ b/libavdevice/decklink_common.cpp
> @@ -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;
> }
>
> diff --git a/libavdevice/decklink_common_c.h b/libavdevice/decklink_common_c.h
> index fdaa1f9..c257721 100644
> --- a/libavdevice/decklink_common_c.h
> +++ b/libavdevice/decklink_common_c.h
> @@ -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;
> diff --git a/libavdevice/decklink_enc_c.c b/libavdevice/decklink_enc_c.c
> index 4bcdbfe..559f078 100644
> --- a/libavdevice/decklink_enc_c.c
> +++ b/libavdevice/decklink_enc_c.c
> @@ -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 },

Looks good with a micro bump.

Thanks,
Marton