add an API so that the number of steps required for a translation path can be acquired

don't transcode via SLINEAR when the option is enabled but there is a direct path from the source to the destination


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@20962 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 10 insertions, 0 deletions

diff --git a/translate.c b/translate.c
index 20da09113..dce4b0827 100644
--- a/translate.c
+++ b/translate.c
@@ -62,6 +62,8 @@ struct translator_path {
  * indicates the total cost of translation and the first step.
  * The full path can be reconstricted iterating on the matrix
  * until step->dstfmt == desired_format.
+ *
+ * Array indexes are 'src' and 'dest', in that order.
  */
 static struct translator_path tr_matrix[MAX_FORMAT][MAX_FORMAT];
 
@@ -651,3 +653,11 @@ int ast_translator_best_choice(int *dst, int *srcs)
 		return best;
 	}
 }
+
+unsigned int ast_translate_path_steps(unsigned int dest, unsigned int src)
+{
+	if (!tr_matrix[src][dest].step)
+		return -1;
+	else
+		return tr_matrix[src][dest].multistep;
+}