On 12/08/14 18:54, Anton Khirnov wrote:
> ---
> doc/APIchanges | 3 +++
> libavutil/mem.c | 20 ++++++++++++++++++++
> libavutil/mem.h | 10 ++++++++++
> libavutil/version.h | 2 +-
> 4 files changed, 34 insertions(+), 1 deletion(-)
>
> diff --git a/doc/APIchanges b/doc/APIchanges
> index 6e5242e..fc56677 100644
> --- a/doc/APIchanges
> +++ b/doc/APIchanges
> @@ -13,6 +13,9 @@ libavutil: 2014-08-09
>
> API changes, most recent first:
>
> +2014-08-xx - xxxxxxx - lavu 54.2.0 - mem.h
> + Add av_strndup().
> +
> 2014-04-xx - xxxxxxx - lavr 2.1.0 - avresample.h
> Add avresample_convert_frame() and avresample_config().
>
> diff --git a/libavutil/mem.c b/libavutil/mem.c
> index be42342..129aff1 100644
> --- a/libavutil/mem.c
> +++ b/libavutil/mem.c
> @@ -222,6 +222,26 @@ char *av_strdup(const char *s)
> return ptr;
> }
>
> +char *av_strndup(const char *s, size_t len)
> +{
> + size_t len1;
> + char *ret = NULL;
> +
> + if (!s)
> + return NULL;
> +
> + len1 = strlen(s);
> + len = FFMIN(len, len1);
> +
> + ret = av_realloc(NULL, len + 1);
> + if (!ret)
> + return NULL;
> +
> + memcpy(ret, s, len);
> + ret[len] = 0;
> + return ret;
> +}
> +
> static void fill16(uint8_t *dst, int len)
> {
> uint32_t v = AV_RN16(dst - 2);
> diff --git a/libavutil/mem.h b/libavutil/mem.h
> index 4a5e362..9f667c2 100644
> --- a/libavutil/mem.h
> +++ b/libavutil/mem.h
> @@ -218,6 +218,16 @@ 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;
av_alloc_size(2);
The rest seems ok.
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