vss: Handle errors in setup_next_fec_group() properly.

setup_next_fec_group() might return a negative value.

diff --git a/vss.c b/vss.c
index a8486bbd9e86e64b6734117386ab5fcca83bd26a..aa76ca2e852a8314667e67ce39192203fc6a69ce 100644 (file)
--- a/vss.c
+++ b/vss.c
@@ -340,8 +340,9 @@ static int compute_next_fec_slice(struct fec_client *fc, struct vss_task *vsst)
 {
        if (fc->first_stream_chunk < 0 || fc->current_slice_num
                        == fc->fcp->slices_per_group + fc->num_extra_slices) {
-               if (!setup_next_fec_group(fc, vsst))
-                       return 0;
+               int ret = setup_next_fec_group(fc, vsst);
+               if (ret <= 0)
+                       return ret;
        }
        write_fec_header(fc, vsst);
        fec_encode(fc->parms, fc->src_data, fc->enc_buf + FEC_HEADER_SIZE,
@@ -827,7 +828,7 @@ static void vss_send(struct vss_task *vsst)
        list_for_each_entry_safe(fc, tmp_fc, &fec_client_list, node) {
                if (!next_slice_is_due(fc, NULL))
                        continue;
-               if (!compute_next_fec_slice(fc, vsst))
+               if (compute_next_fec_slice(fc, vsst) <= 0)
                        continue;
                PARA_DEBUG_LOG("sending %d:%d (%u bytes)\n", fc->group.num,
                        fc->current_slice_num, fc->fcp->max_slice_bytes);