struct list_head callbacks;
/** A pointer to the configuration of this instance. */
void *conf;
+ struct btr_node *btrn;
+ struct task task;
+ size_t min_iqs;
};
/** Describes one running instance of a chain of filters */
* buffer used to read from stdin for para_filter; the output buffer of the
* current receiver for para_audiod).
*/
- char *inbuf;
+ char **inbufp;
/**
* The output buffer of the filter chain.
*
* Points to the output buffer of the last filter in the filter chain.
*/
- char *outbuf;
+ char **outbufp;
/** Contains the number of bytes loaded in the input buffer. */
size_t *in_loaded;
/** Contains the number of bytes loaded in the output buffer. */
struct filter_callback {
/** All callbacks are organized in a doubly linked list. */
struct list_head node;
- /**
- * Private data.
- *
- * May be initialized by the application before registering the callback. This
- * pointer is not used by the filter subsystem. It is provided for use within
- * the input/output/close callback functions.
- */
- void *data;
/**
* The input callback.
*
- * In not \p NULL, the filter subsystem calls this function whenever the filter
+ * If not \p NULL, the filter subsystem calls this function whenever the filter
* consumed some or all of its input buffer. A pointer to the buffer of consumed
* data, its length and a pointer to the own \a filter_callback structure are passed
* to \a input_cb. The input callback is expected to return a negative value on errors.
* of \a fn suitably. The open function is assumed to succeed.
*/
void (*open)(struct filter_node *fn);
- /**
- * Convert (filter) the given data.
- *
- * Pointer to the converting function of the filter. It should convert the
- * given input buffer \a inbuf which is of length \a len to the previously
- * reserved output buffer of \a fn. On success, it must return the number of
- * bytes it consumed from \a inbuf. On errors, a negative number indicating the
- * kind of the error must be returned.
- *
- * A zero return value just means that nothing was converted (probably because
- * the input buffer was too small). This is not interpreted as an error.
- */
- ssize_t (*convert)(char *inbuf, size_t len, struct filter_node *fn);
/**
* Close one instance of this filter.
*
* argv. On failure, a negative paraslash error code must be returned.
*/
int (*parse_config)(int argc, char **argv, void **config);
+ void (*free_config)(void *conf);
/** The help texts for this filter. */
struct ggo_help help;
+ void (*pre_select)(struct sched *s, struct task *t);
+ /**
+ * Convert (filter) the given data.
+ *
+ * Pointer to the converting function of the filter. It should convert as
+ * input data as possible. On errors, the post_select function is supposed
+ * to set t->error to a (negative) error code.
+ */
+ void (*post_select)(struct sched *s, struct task *t);
+ btr_command_handler execute;
};
-void close_filters(struct filter_chain *fc);
-void filter_init(struct filter *all_filters);
+void filter_init(void);
int check_filter_arg(char *filter_arg, void **conf);
-void filter_pre_select(__a_unused struct sched *s, struct task *t);
void print_filter_helps(int detailed);
+void generic_filter_pre_select(struct sched *s, struct task *t);
static inline void write_int16_host_endian(char *buf, int val)
{