vaapi_h264: Add support for SEI messages

[ffmpeg] / libavutil / mem.h

diff --git a/libavutil/mem.h b/libavutil/mem.h
index 99dc4cc156283979399744fffb2d3a4017af7d10..9f667c270bf314ca2e7b56b1610ab027a82e2c35 100644 (file)
--- a/libavutil/mem.h
+++ b/libavutil/mem.h
@@ -217,6 +217,16 @@ av_alloc_size(1, 2) static inline void *av_mallocz_array(size_t nmemb, size_t si
  */
 char *av_strdup(const char *s) av_malloc_attrib;
 
+/**
+ * Duplicate a substring of the string s.
+ * @param s string to be duplicated
+ * @param len the maximum length of the resulting string (not counting the
+ *            terminating byte).
+ * @return Pointer to a newly-allocated string containing a
+ * copy of s or NULL if the string cannot be allocated.
+ */
+char *av_strndup(const char *s, size_t len) av_malloc_attrib;
+
 /**
  * Free a memory block which has been allocated with av_malloc(z)() or
  * av_realloc() and set the pointer pointing to it to NULL.
@@ -237,6 +247,27 @@ void av_freep(void *ptr);
  */
 void av_memcpy_backptr(uint8_t *dst, int back, int cnt);
 
+/**
+ * Reallocate the given block if it is not large enough, otherwise do nothing.
+ *
+ * @see av_realloc
+ */
+void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size);
+
+/**
+ * Allocate a buffer, reusing the given one if large enough.
+ *
+ * Contrary to av_fast_realloc the current buffer contents might not be
+ * preserved and on error the old buffer is freed, thus no special
+ * handling to avoid memleaks is necessary.
+ *
+ * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer
+ * @param size size of the buffer *ptr points to
+ * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and
+ *                 *size 0 if an error occurred.
+ */
+void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size);
+
 /**
  * @}
  */