improve av_parse_color() to allow for non-null terminated color string

Originally committed as revision 25744 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 5 insertions, 1 deletions

diff --git a/libavfilter/parseutils.h b/libavfilter/parseutils.h
index a56750c02e..322afb3e76 100644
--- a/libavfilter/parseutils.h
+++ b/libavfilter/parseutils.h
@@ -40,9 +40,13 @@
  * 0xff/1.0 completely opaque).
  * If the alpha component is not specified then 0xff is assumed.
  * The string "random" will result in a random color.
+ * @param slen length of the initial part of color_string containing the
+ * color. It can be set to -1 if color_string is a null terminated string
+ * containing nothing else than the color.
  * @return >= 0 in case of success, a negative value in case of
  * failure (for example if color_string cannot be parsed).
  */
-int av_parse_color(uint8_t *rgba_color, const char *color_string, void *log_ctx);
+int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen,
+                   void *log_ctx);
 
 #endif  /* AVFILTER_PARSEUTILS_H */