avdevice/decklink: deprecate the -list_devices option

The user should use ffmpeg -sources decklink or ffmpeg -sinks decklink instead.
Signed-off-by: Marton Balint <cus@passwd.hu>

doc/indevs.texi

@@ -277,8 +277,8 @@ audio track.
 
 @item list_devices
 If set to @option{true}, print a list of devices and exit.
-Defaults to @option{false}. Alternatively you can use the @code{-sources}
-option of ffmpeg to list the available input devices.
+Defaults to @option{false}. This option is deprecated, please use the
+@code{-sources} option of ffmpeg to list the available input devices.
 
 @item list_formats
 If set to @option{true}, print a list of supported formats and exit.
@@ -407,7 +407,7 @@ Defaults to @option{false}.
 @item
 List input devices:
 @example
-ffmpeg -f decklink -list_devices 1 -i dummy
+ffmpeg -sources decklink
 @end example
 
 @item

doc/outdevs.texi

@@ -140,8 +140,8 @@ device with @command{-list_formats 1}. Audio sample rate is always 48 kHz.
 
 @item list_devices
 If set to @option{true}, print a list of devices and exit.
-Defaults to @option{false}. Alternatively you can use the @code{-sinks}
-option of ffmpeg to list the available output devices.
+Defaults to @option{false}. This option is deprecated, please use the
+@code{-sinks} option of ffmpeg to list the available output devices.
 
 @item list_formats
 If set to @option{true}, print a list of supported formats and exit.
@@ -168,7 +168,7 @@ Defaults to @samp{unset}.
 @item
 List output devices:
 @example
-ffmpeg -i test.avi -f decklink -list_devices 1 dummy
+ffmpeg -sinks decklink
 @end example
 
 @item

libavdevice/decklink_dec.cpp

@@ -1050,6 +1050,7 @@ av_cold int ff_decklink_read_header(AVFormatContext *avctx)
 
     /* List available devices. */
     if (ctx->list_devices) {
+        av_log(avctx, AV_LOG_WARNING, "The -list_devices option is deprecated and will be removed. Please use ffmpeg -sources decklink instead.\n");
         ff_decklink_list_devices_legacy(avctx, 1, 0);
         return AVERROR_EXIT;
     }

libavdevice/decklink_enc.cpp

@@ -568,6 +568,7 @@ av_cold int ff_decklink_write_header(AVFormatContext *avctx)
 
     /* List available devices and exit. */
     if (ctx->list_devices) {
+        av_log(avctx, AV_LOG_WARNING, "The -list_devices option is deprecated and will be removed. Please use ffmpeg -sinks decklink instead.\n");
         ff_decklink_list_devices_legacy(avctx, 0, 1);
         return AVERROR_EXIT;
     }

libavdevice/version.h

@@ -29,7 +29,7 @@
 
 #define LIBAVDEVICE_VERSION_MAJOR  58
 #define LIBAVDEVICE_VERSION_MINOR   9
-#define LIBAVDEVICE_VERSION_MICRO 102
+#define LIBAVDEVICE_VERSION_MICRO 103
 
 #define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \
                                                LIBAVDEVICE_VERSION_MINOR, \