-
-}
-
-/** 640K ought to be enough for everybody ;) */
-#define FILTER_MAX_PENDING (640 * 1024)
-
-int prepare_filter_node(struct filter_node *fn)
-{
- struct btr_node *btrn = fn->btrn;
- size_t iqs;
-
- if (btr_eof(btrn))
- return -E_FC_EOF;
- if (btr_bytes_pending(btrn) > FILTER_MAX_PENDING)
- return 0;
- iqs = btr_get_input_queue_size(btrn);
- if (iqs < fn->min_iqs && !btr_no_parent(btrn))
- return 0;
- assert(iqs != 0);
- /* avoid "buffer too small" errors from the decoder */
- btr_merge(btrn, fn->min_iqs);
- return 1;
-}
-
-void generic_filter_pre_select(struct sched *s, struct task *t)
-{
- struct filter_node *fn = container_of(t, struct filter_node, task);
- size_t iqs = btr_get_input_queue_size(fn->btrn);
-
- t->error = 0;
- if (iqs <= fn->min_iqs)
- return;
- if (btr_bytes_pending(fn->btrn) > FILTER_MAX_PENDING)
- return; /* FIXME, should use reasonable bound on timeout */
- s->timeout.tv_sec = 0;
- s->timeout.tv_usec = 1;
+ if (!strcmp(cmd, "sample_format")) {
+ *result = make_message("%d", DECODER_SAMPLE_FORMAT);
+ return 1;
+ }
+ return -ERRNO_TO_PARA_ERROR(ENOTSUP);