avdevice/decklink: deprecate @mode syntax in device name to specify mode

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

libavdevice/decklink_common.cpp

@@ -286,7 +286,6 @@ int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direct
     IDeckLinkDisplayModeIterator *itermode;
     IDeckLinkDisplayMode *mode;
     uint32_t format_code;
-    int i=0;
     HRESULT res;
 
     if (direction == DIRECTION_IN) {
@@ -307,14 +306,14 @@ 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\tmode\tformat_code\tdescription",
+    av_log(avctx, AV_LOG_INFO, "Supported formats for '%s':\n\tformat_code\tdescription",
                avctx->filename);
     while (itermode->Next(&mode) == S_OK) {
         BMDTimeValue tb_num, tb_den;
         mode->GetFrameRate(&tb_num, &tb_den);
         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(),
+        av_log(avctx, AV_LOG_INFO, "\n\t%.4s\t\t%ldx%ld at %d/%d fps",
+                (char*) &format_code, mode->GetWidth(), mode->GetHeight(),
                 (int) tb_den, (int) tb_num);
         switch (mode->GetFieldDominance()) {
         case bmdLowerFieldFirst:

libavdevice/decklink_dec.cpp

@@ -516,6 +516,7 @@ av_cold int ff_decklink_read_header(AVFormatContext *avctx)
     strcpy (fname, avctx->filename);
     tmp=strchr (fname, '@');
     if (tmp != NULL) {
+        av_log(avctx, AV_LOG_WARNING, "The @mode syntax is deprecated and will be removed. Please use the -format_code option.\n");
         mode_num = atoi (tmp+1);
         *tmp = 0;
     }