static int slinear_write(struct ast_filestream *fs, struct ast_frame *f)
{
int res;
+
+ /* Don't try to write an interpolated frame */
+ if (f->datalen == 0) {
+ return 0;
+ }
+
if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) {
ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno));
return -1;
return head;
}
+static struct ast_frame *generate_interpolated_slin(struct ast_trans_pvt *p, struct ast_frame *f)
+{
+ struct ast_frame res = { AST_FRAME_VOICE };
+
+ /*
+ * If we've gotten here then we should have an interpolated frame that was not handled
+ * by the translation codec. So create an interpolated frame in the appropriate format
+ * that was going to be written. This frame might be handled later by other resources.
+ * For instance, generic plc.
+ *
+ * Note, generic plc is currently only available for the format type 'slin' (8KHz only -
+ * The generic plc code appears to have been based around that). Generic plc is filled
+ * in later on frame write.
+ */
+ if (!ast_opt_generic_plc || f->datalen != 0 ||
+ ast_format_cmp(p->explicit_dst, ast_format_slin) == AST_FORMAT_CMP_NOT_EQUAL) {
+ return NULL;
+ }
+
+ res.subclass.format = ast_format_cache_get_slin_by_rate(8000); /* ref bumped on dup */
+ res.samples = f->samples;
+ res.datalen = 0;
+ res.data.ptr = NULL;
+ res.offset = AST_FRIENDLY_OFFSET;
+
+ return ast_frdup(&res);
+}
+
/*! \brief do the actual translation */
struct ast_frame *ast_translate(struct ast_trans_pvt *path, struct ast_frame *f, int consume)
{
}
out = p->t->frameout(p);
}
+
+ if (!out) {
+ out = generate_interpolated_slin(path, f);
+ }
+
if (out) {
/* we have a frame, play with times */
if (!ast_tvzero(delivery)) {