lavu/fifo: add av_fifo_freep function

Function allows to free fifo and reset freed pointer.

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

3 files changed, 15 insertions, 1 deletions

diff --git a/libavutil/fifo.c b/libavutil/fifo.c
index 235b53ce40..e35237c090 100644
--- a/libavutil/fifo.c
+++ b/libavutil/fifo.c
@@ -45,6 +45,14 @@ void av_fifo_free(AVFifoBuffer *f)
     }
 }
 
+void av_fifo_freep(AVFifoBuffer **f)
+{
+    if (f) {
+        av_fifo_free(*f);
+        *f = NULL;
+    }
+}
+
 void av_fifo_reset(AVFifoBuffer *f)
 {
     f->wptr = f->rptr = f->buffer;
diff --git a/libavutil/fifo.h b/libavutil/fifo.h
index fe7364f427..66fb48a2ed 100644
--- a/libavutil/fifo.h
+++ b/libavutil/fifo.h
@@ -48,6 +48,12 @@ AVFifoBuffer *av_fifo_alloc(unsigned int size);
 void av_fifo_free(AVFifoBuffer *f);
 
 /**
+ * Free an AVFifoBuffer and reset pointer to NULL.
+ * @param f AVFifoBuffer to free
+ */
+void av_fifo_freep(AVFifoBuffer **f);
+
+/**
  * Reset the AVFifoBuffer to the state right after av_fifo_alloc, in particular it is emptied.
  * @param f AVFifoBuffer to reset
  */
diff --git a/libavutil/version.h b/libavutil/version.h
index 3cb5b66666..a430c6b948 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -56,7 +56,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  52
-#define LIBAVUTIL_VERSION_MINOR  81
+#define LIBAVUTIL_VERSION_MINOR  82
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \