play: Convert com_ls() to lopsub.

[paraslash.git] / filter_common.c

diff --git a/filter_common.c b/filter_common.c
index 6fb9bd96ef8278b3e328198e24db78664a956542..e9b97e54633a8770009c0f746b7daa712d4135fb 100644 (file)
--- a/filter_common.c
+++ b/filter_common.c
@@ -58,7 +58,7 @@ void filter_init(void)
  * If the filter has a command line parser and options is not NULL, run it.
  * Returns filter_num on success, negative on errors
  */
-static int parse_filter_args(int filter_num, char *options, void **conf)
+static int parse_filter_args(int filter_num, const char *options, void **conf)
 {
        const struct filter *f = filter_get(filter_num);
        int ret, argc;
@@ -78,11 +78,12 @@ static int parse_filter_args(int filter_num, char *options, void **conf)
 /**
  * Check the filter command line options.
  *
- * \param fa The command line options.
+ * \param fa The filter argument.
  * \param conf Points to the filter configuration upon successful return.
  *
- * Check if \a fa starts with a the name of a supported filter, followed by
- * a colon. If yes, call the command line parser of that filter.
+ * Check if the given filter argument starts with the name of a supported
+ * filter, optionally followed by options for this filter. If yes, call the
+ * command line parser of that filter.
  *
  * \return On success, the number of the filter is returned and \a conf
  * is initialized to point to the filter configuration determined by \a fa.
@@ -93,7 +94,7 @@ static int parse_filter_args(int filter_num, char *options, void **conf)
  *
  * \sa filter::parse_config
  */
-int check_filter_arg(char *fa, void **conf)
+int check_filter_arg(const char *fa, void **conf)
 {
        int j;
 
@@ -203,7 +204,7 @@ int decoder_execute(const char *cmd, unsigned sample_rate, unsigned channels,
                return 1;
        }
        if (!strcmp(cmd, "sample_format")) {
-               *result = make_message("%u", DECODER_SAMPLE_FORMAT);
+               *result = make_message("%d", DECODER_SAMPLE_FORMAT);
                return 1;
        }
        return -ERRNO_TO_PARA_ERROR(ENOTSUP);