MT#56782 pass format to format answer

Make it possible to make our fmtp= answer string based on the input
audio format.

Change-Id: I042561c3d4e7056624e1fd9ad2a20d6ddf116da2

daemon/codec.c

@@ -446,7 +446,7 @@ reset:
 
 	rtp_payload_type_copy(&handler->dest_pt, dest);
 	if (dest->codec_def->format_answer)
-		dest->codec_def->format_answer(&handler->dest_pt);
+		dest->codec_def->format_answer(&handler->dest_pt, &handler->source_pt);
 	handler->handler_func = handler_func_transcode;
 	handler->packet_decoded = packet_decoded;
 	handler->transcoder = 1;

lib/codeclib.c

@@ -3490,7 +3490,7 @@ static int evs_format_parse(struct rtp_codec_format *f, const str *fmtp) {
 	codeclib_key_value_parse(fmtp, true, evs_parse_format_cb, &f->parsed);
 	return 0;
 }
-static void evs_format_answer(struct rtp_payload_type *p) {
+static void evs_format_answer(struct rtp_payload_type *p, const struct rtp_payload_type *src) {
 	if (!p->format.fmtp_parsed)
 		return;
 

lib/codeclib.h

@@ -91,7 +91,7 @@ typedef void select_encoder_format_f(encoder_t *, format_t *requested_format, co
 typedef void select_decoder_format_f(decoder_t *);
 
 typedef int format_parse_f(struct rtp_codec_format *, const str *fmtp);
-typedef void format_answer_f(struct rtp_payload_type *);
+typedef void format_answer_f(struct rtp_payload_type *, const struct rtp_payload_type *);