diff options
| -rw-r--r-- | libavutil/hash.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libavutil/hash.h b/libavutil/hash.h index 7ecb3e72a9..5dd8712a3e 100644 --- a/libavutil/hash.h +++ b/libavutil/hash.h @@ -49,6 +49,18 @@ const char *av_hash_names(int i); const char *av_hash_get_name(const struct AVHashContext *ctx); /** + * Maximum value that av_hash_get_size will currently return. + * + * You can use this if you absolutely want or need to use static allocation + * and are fine with not supporting hashes newly added to libavutil without + * recompilation. + * Note that you still need to check against av_hash_get_size, adding new hashes + * with larger sizes will not be considered an ABI change and should not cause + * your code to overflow a buffer. + */ +#define AV_HASH_MAX_SIZE 32 + +/** * Get the size of the resulting hash value in bytes. * * The pointer passed to av_hash_final have space for at least this many bytes. |