avutil: add get_category() for the case where one AVClass can have more than 1 category

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 8 insertions, 0 deletions

diff --git a/libavutil/log.h b/libavutil/log.h
index 951c60b333..8d9601ab7d 100644
--- a/libavutil/log.h
+++ b/libavutil/log.h
@@ -102,9 +102,16 @@ typedef struct AVClass {
 
     /**
      * Category used for visualization (like color)
+     * This is only set if the category is equal for all objects using this class.
      * available since version (51 << 16 | 56 << 8 | 100)
      */
     AVClassCategory category;
+
+    /**
+     * Callback to return the category.
+     * available since version (51 << 16 | 59 << 8 | 100)
+     */
+    AVClassCategory (*get_category)(void* ctx);
 } AVClass;
 
 /* av_log API */
@@ -167,6 +174,7 @@ void av_log_set_level(int);
 void av_log_set_callback(void (*)(void*, int, const char*, va_list));
 void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl);
 const char* av_default_item_name(void* ctx);
+AVClassCategory av_default_get_category(void *ptr);
 
 /**
  * Format a line of log the same way as the default callback.