Escape the content in src and append it to dstbuf.
@param dstbuf already inited destination bprint buffer
@param src string containing the text to escape
@param special_chars string containing the special characters which
need to be escaped, can be NULL
@param mode escape mode to employ, see AV_ESCAPE_MODE_* macros.
Any unknown value for mode will be considered equivalent to
AV_ESCAPE_MODE_BACKSLASH, but this behaviour can change without
notice.
@param flags flags which control how to escape, see AV_ESCAPE_FLAG_* macros
Escape the content in src and append it to dstbuf.
@param dstbuf already inited destination bprint buffer @param src string containing the text to escape @param special_chars string containing the special characters which need to be escaped, can be NULL @param mode escape mode to employ, see AV_ESCAPE_MODE_* macros. Any unknown value for mode will be considered equivalent to AV_ESCAPE_MODE_BACKSLASH, but this behaviour can change without notice. @param flags flags which control how to escape, see AV_ESCAPE_FLAG_* macros