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avdevice/decklink: add link 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 07:43:34 +08:00
parent ca788d184c
commit b923bfc679
6 changed files with 31 additions and 0 deletions
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6
doc/outdevs.texi
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@ -205,6 +205,12 @@ Defaults to @samp{unset}.
Sets the genlock timing pixel offset on the used output.
Defaults to @samp{unset}.
@item link
Sets the SDI video link configuration on the used output. Must be
@samp{unset}, @samp{single} link SDI, @samp{dual} link SDI or @samp{quad} link
SDI.
Defaults to @samp{unset}.
@end table
@subsection Examples

9
libavdevice/decklink_common.cpp
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@ -214,6 +214,15 @@ int ff_decklink_set_configs(AVFormatContext *avctx,
if (res != S_OK)
av_log(avctx, AV_LOG_WARNING, "Setting timing offset failed.\n");
}
if (direction == DIRECTION_OUT && ctx->link > 0) {
res = ctx->cfg->SetInt(bmdDeckLinkConfigSDIOutputLinkConfiguration, ctx->link);
if (res != S_OK)
av_log(avctx, AV_LOG_WARNING, "Setting link configuration failed.\n");
else
av_log(avctx, AV_LOG_VERBOSE, "Successfully set link configuration: 0x%x.\n", ctx->link);
}
return 0;
}

8
libavdevice/decklink_common.h
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@ -131,6 +131,7 @@ struct decklink_ctx {
int64_t teletext_lines;
double preroll;
int duplex_mode;
BMDLinkConfiguration link;
DecklinkPtsSource audio_pts_source;
DecklinkPtsSource video_pts_source;
int draw_bars;
@ -200,6 +201,13 @@ static const BMDTimecodeFormat decklink_timecode_format_map[] = {
#endif
};
static const BMDLinkConfiguration decklink_link_conf_map[] = {
(BMDLinkConfiguration)0,
bmdLinkConfigurationSingleLink,
bmdLinkConfigurationDualLink,
bmdLinkConfigurationQuadLink
};
int ff_decklink_set_configs(AVFormatContext *avctx, decklink_direction_t direction);
int ff_decklink_set_format(AVFormatContext *avctx, int width, int height, int tb_num, int tb_den, enum AVFieldOrder field_order, decklink_direction_t direction = DIRECTION_OUT);
int ff_decklink_set_format(AVFormatContext *avctx, decklink_direction_t direction);

1
libavdevice/decklink_common_c.h
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@ -48,6 +48,7 @@ struct decklink_cctx {
int audio_channels;
int audio_depth;
int duplex_mode;
int link;
DecklinkPtsSource audio_pts_source;
DecklinkPtsSource video_pts_source;
int audio_input;

2
libavdevice/decklink_enc.cpp
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@ -559,6 +559,8 @@ av_cold int ff_decklink_write_header(AVFormatContext *avctx)
ctx->list_formats = cctx->list_formats;
ctx->preroll = cctx->preroll;
ctx->duplex_mode = cctx->duplex_mode;
if (cctx->link > 0 && (unsigned int)cctx->link < FF_ARRAY_ELEMS(decklink_link_conf_map))
ctx->link = decklink_link_conf_map[cctx->link];
cctx->ctx = ctx;
#if CONFIG_LIBKLVANC
if (klvanc_context_create(&ctx->vanc_ctx) < 0) {

5
libavdevice/decklink_enc_c.c
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@ -35,6 +35,11 @@ static const AVOption options[] = {
{ "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, "duplex_mode"},
{ "half" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, "duplex_mode"},
{ "full" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 2 }, 0, 0, ENC, "duplex_mode"},
{ "link" , "single/dual/quad SDI link configuration", OFFSET(link), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 3, ENC, "link"},
{ "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, "link"},
{ "single" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, "link"},
{ "dual" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 2 }, 0, 0, ENC, "link"},
{ "quad" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 3 }, 0, 0, ENC, "link"},
{ "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 },