Add support for allowing the channel driver to handle transcoding.

This was accomplished using a set of options and the setoption channel callback.
The core calls into the channel driver using these options and the channel driver
either returns success or failure.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@187360 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 9 insertions, 0 deletions

diff --git a/include/asterisk/frame.h b/include/asterisk/frame.h
index f7e8b20ad..a16cf804c 100644
--- a/include/asterisk/frame.h
+++ b/include/asterisk/frame.h
@@ -391,6 +391,15 @@ enum ast_control_transfer {
  */
 #define AST_OPTION_T38_STATE		10
 
+/*! Request that the channel driver deliver frames in a specific format */
+#define AST_OPTION_FORMAT_READ          11
+
+/*! Request that the channel driver be prepared to accept frames in a specific format */
+#define AST_OPTION_FORMAT_WRITE         12
+
+/*! Request that the channel driver make two channels of the same tech type compatible if possible */
+#define AST_OPTION_MAKE_COMPATIBLE      13
+
 struct oprmode {
 	struct ast_channel *peer;
 	int mode;