@@ -153,7 +153,7 @@

  */

 #define LIBAVUTIL_VERSION_MAJOR 51

-#define LIBAVUTIL_VERSION_MINOR 51

+#define LIBAVUTIL_VERSION_MINOR 52

 #define LIBAVUTIL_VERSION_MICRO 100

 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \

@@ -79,6 +79,19 @@ int av_fifo_realloc2(AVFifoBuffer *f, unsigned int new_size)

     return 0;

 }

+int av_fifo_grow(AVFifoBuffer *f, unsigned int size)

+{

+    unsigned int old_size = f->end - f->buffer;

+    if(size + (unsigned)av_fifo_size(f) < size)

+        return AVERROR(EINVAL);

+

+    size += av_fifo_size(f);

+

+    if (old_size < size)

+        return av_fifo_realloc2(f, FFMAX(size, 2*size));

+    return 0;

+}

+

 // src must NOT be const as it can be a context for func that may need updating (like a pointer or byte counter)

 int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int (*func)(void*, void*, int))

 {

@@ -103,6 +103,17 @@ int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int (*func)(void

 int av_fifo_realloc2(AVFifoBuffer *f, unsigned int size);

 /**

+ * Enlarge an AVFifoBuffer.

+ * In case of reallocation failure, the old FIFO is kept unchanged.

+ * The new fifo size may be larger than the requested size.

+ *

+ * @param f AVFifoBuffer to resize

+ * @param additional_space the amount of space in bytes to allocate in addition to av_fifo_size()

+ * @return <0 for failure, >=0 otherwise

+ */

+int av_fifo_grow(AVFifoBuffer *f, unsigned int additional_space);

+

+/**

  * Read and discard the specified amount of data from an AVFifoBuffer.

  * @param f AVFifoBuffer to read from

  * @param size amount of data to read in bytes