avdevice/decklink: add format_code of display mode to list_format output

Signed-off-by: Matthias Hunstock <atze@fem.tu-ilmenau.de>
Signed-off-by: Marton Balint <cus@passwd.hu>

libavdevice/decklink_common.cpp

@@ -33,6 +33,7 @@ extern "C" {
 #include "libavformat/avformat.h"
 #include "libavformat/internal.h"
 #include "libavutil/imgutils.h"
+#include "libavutil/bswap.h"
 }
 
 #include "decklink_common.h"
@@ -276,6 +277,7 @@ int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direct
     struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
     IDeckLinkDisplayModeIterator *itermode;
     IDeckLinkDisplayMode *mode;
+    uint32_t format_code;
     int i=0;
     HRESULT res;
 
@@ -297,13 +299,14 @@ int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direct
             return AVERROR(EIO);
     }
 
-    av_log(avctx, AV_LOG_INFO, "Supported formats for '%s':\n",
+    av_log(avctx, AV_LOG_INFO, "Supported formats for '%s':\n\tmode\tformat_code\tdescription",
                avctx->filename);
     while (itermode->Next(&mode) == S_OK) {
         BMDTimeValue tb_num, tb_den;
         mode->GetFrameRate(&tb_num, &tb_den);
-        av_log(avctx, AV_LOG_INFO, "\t%d\t%ldx%ld at %d/%d fps",
-                ++i,mode->GetWidth(), mode->GetHeight(),
+        format_code = av_bswap32(mode->GetDisplayMode());
+        av_log(avctx, AV_LOG_INFO, "\n\t%d\t%.4s\t\t%ldx%ld at %d/%d fps",
+                ++i, (char*) &format_code, mode->GetWidth(), mode->GetHeight(),
                 (int) tb_den, (int) tb_num);
         switch (mode->GetFieldDominance()) {
         case bmdLowerFieldFirst:
@@ -311,9 +314,9 @@ int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direct
         case bmdUpperFieldFirst:
         av_log(avctx, AV_LOG_INFO, " (interlaced, upper field first)"); break;
         }
-        av_log(avctx, AV_LOG_INFO, "\n");
         mode->Release();
     }
+    av_log(avctx, AV_LOG_INFO, "\n");
 
     itermode->Release();