avfilter/avfilter: Reorder structure fields

Move related fields closer together and try to plug holes.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavfilter/avfilter.h

@@ -441,6 +441,13 @@ struct AVFilterContext {
      */
     int thread_type;
 
+    /**
+     * Max number of threads allowed in this filter instance.
+     * If <= 0, its value is ignored.
+     * Overrides global number of threads set per filter graph.
+     */
+    int nb_threads;
+
     struct AVFilterCommand *command_queue;
 
     char *enable_str;               ///< enable expression string
@@ -461,13 +468,6 @@ struct AVFilterContext {
      */
     AVBufferRef *hw_device_ctx;
 
-    /**
-     * Max number of threads allowed in this filter instance.
-     * If <= 0, its value is ignored.
-     * Overrides global number of threads set per filter graph.
-     */
-    int nb_threads;
-
     /**
      * Ready status of the filter.
      * A non-0 value means that the filter needs activating;
@@ -548,14 +548,25 @@ struct AVFilterLink {
 
     enum AVMediaType type;      ///< filter media type
 
+    int format;                 ///< agreed upon media format
+
     /* These parameters apply only to video */
     int w;                      ///< agreed upon image width
     int h;                      ///< agreed upon image height
     AVRational sample_aspect_ratio; ///< agreed upon sample aspect ratio
+    /**
+     * For non-YUV links, these are respectively set to fallback values (as
+     * appropriate for that colorspace).
+     *
+     * Note: This includes grayscale formats, as these are currently treated
+     * as forced full range always.
+     */
+    enum AVColorSpace colorspace;   ///< agreed upon YUV color space
+    enum AVColorRange color_range;  ///< agreed upon YUV color range
+
     /* These parameters apply only to audio */
     int sample_rate;            ///< samples per second
-
-    int format;                 ///< agreed upon media format
+    AVChannelLayout ch_layout;  ///< channel layout of current buffer (see libavutil/channel_layout.h)
 
     /**
      * Define the time base used by the PTS of the frames/samples
@@ -566,18 +577,6 @@ struct AVFilterLink {
      */
     AVRational time_base;
 
-    AVChannelLayout ch_layout;  ///< channel layout of current buffer (see libavutil/channel_layout.h)
-
-    /**
-     * For non-YUV links, these are respectively set to fallback values (as
-     * appropriate for that colorspace).
-     *
-     * Note: This includes grayscale formats, as these are currently treated
-     * as forced full range always.
-     */
-    enum AVColorSpace colorspace;   ///< agreed upon YUV color space
-    enum AVColorRange color_range;  ///< agreed upon YUV color range
-
     /*****************************************************************
      * All fields below this line are not part of the public API. They
      * may not be used outside of libavfilter and can be changed and