avdevice/decklink: refactor ff_decklink_set_format function

This is done to enable input format autodetection in decklink_dec.

Signed-off-by: Marton Balint <cus@passwd.hu>

1 files changed, 24 insertions, 14 deletions

diff --git a/libavdevice/decklink_common.cpp b/libavdevice/decklink_common.cpp
index 2bd63ac820..b952e74955 100644
--- a/libavdevice/decklink_common.cpp
+++ b/libavdevice/decklink_common.cpp
@@ -148,23 +148,12 @@ static DECKLINK_BOOL field_order_eq(enum AVFieldOrder field_order, BMDFieldDomin
     return false;
 }
 
-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, int num)
-{
+int ff_decklink_set_configs(AVFormatContext *avctx,
+                            decklink_direction_t direction) {
     struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
     struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
-    BMDDisplayModeSupport support;
-    IDeckLinkDisplayModeIterator *itermode;
-    IDeckLinkDisplayMode *mode;
-    int i = 1;
     HRESULT res;
 
-    av_log(avctx, AV_LOG_DEBUG, "Trying to find mode for frame size %dx%d, frame timing %d/%d, field order %d, direction %d, mode number %d, format code %s\n",
-        width, height, tb_num, tb_den, field_order, direction, num, (cctx->format_code) ? cctx->format_code : "(unset)");
-
     if (ctx->duplex_mode) {
         DECKLINK_BOOL duplex_supported = false;
 
@@ -181,7 +170,6 @@ int ff_decklink_set_format(AVFormatContext *avctx,
             av_log(avctx, AV_LOG_WARNING, "Unable to set duplex mode, because it is not supported.\n");
         }
     }
-
     if (direction == DIRECTION_IN) {
         int ret;
         ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
@@ -190,6 +178,28 @@ int ff_decklink_set_format(AVFormatContext *avctx,
         ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
         if (ret < 0)
             return ret;
+    }
+    return 0;
+}
+
+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, int num)
+{
+    struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
+    struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
+    BMDDisplayModeSupport support;
+    IDeckLinkDisplayModeIterator *itermode;
+    IDeckLinkDisplayMode *mode;
+    int i = 1;
+    HRESULT res;
+
+    av_log(avctx, AV_LOG_DEBUG, "Trying to find mode for frame size %dx%d, frame timing %d/%d, field order %d, direction %d, mode number %d, format code %s\n",
+        width, height, tb_num, tb_den, field_order, direction, num, (cctx->format_code) ? cctx->format_code : "(unset)");
+
+    if (direction == DIRECTION_IN) {
         res = ctx->dli->GetDisplayModeIterator (&itermode);
     } else {
         res = ctx->dlo->GetDisplayModeIterator (&itermode);