avdevice/decklink: add link configuration option

Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/libavdevice/decklink_common.cpp b/libavdevice/decklink_common.cpp
index 24aa9b1d13..4e0df04915 100644
--- a/libavdevice/decklink_common.cpp
+++ b/libavdevice/decklink_common.cpp
@@ -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;
 }