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avdevice/decklink: Add support for EIA-708 output over SDI

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Hook in libklvanc and use it for output of EIA-708 captions over
SDI.  The bulk of this patch is just general support for ancillary
data for the Decklink SDI module - the real work for construction
of the EIA-708 CDP and VANC line construction is done by libklvanc.

Libklvanc can be found at: https://github.com/stoth68000/libklvanc

Updated to reflect feedback from Marton Balint <cus@passwd.hu>,
Carl Eugen Hoyos <ceffmpeg@gmail.com>, Aaron Levinson
<alevinsn_dev@levland.net>, and Moritz Barsnick <barsnick@gmx.net>

Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Devin Heitmueller
2018-09-07 15:40:25 -04:00
committed by Marton Balint
parent 6a9abe9ec3
commit 8732dfa995
5 changed files with 199 additions and 12 deletions
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16
libavdevice/decklink_common.cpp
View File

@@ -239,10 +239,18 @@ int ff_decklink_set_format(AVFormatContext *avctx,
&support, NULL) != S_OK)
return -1;
} else {
if (ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, bmdFormat8BitYUV,
bmdVideoOutputFlagDefault,
&support, NULL) != S_OK)
return -1;
if (!ctx->supports_vanc || ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
bmdVideoOutputVANC,
&support, NULL) != S_OK) {
/* Try without VANC enabled */
if (ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
bmdVideoOutputFlagDefault,
&support, NULL) != S_OK) {
return -1;
}
ctx->supports_vanc = 0;
}
}
if (support == bmdDisplayModeSupported)
return 0;