[Asterisk-code-review] channel: Set up calls without audio (text+video), again. (asterisk[16])

[George Joseph]

George Joseph has submitted this change. ( https://gerrit.asterisk.org/c/asterisk/+/15367 )

Change subject: channel: Set up calls without audio (text+video), again.
......................................................................

channel: Set up calls without audio (text+video), again.

ASTERISK-29259

Change-Id: Ib6a6550e0e08355745d66da8e60ef49e81f9c6c5
---
M main/channel.c
1 file changed, 10 insertions(+), 3 deletions(-)

Approvals:
  Joshua Colp: Looks good to me, but someone else must approve
  George Joseph: Looks good to me, approved; Approved for Submit



diff --git a/main/channel.c b/main/channel.c
index 0f76c9b..67c17db 100644
--- a/main/channel.c
+++ b/main/channel.c
@@ -6276,8 +6276,13 @@
 
 		/* find the best audio format to use */
 		tmp_cap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
-		if (tmp_cap) {
-			ast_format_cap_append_from_cap(tmp_cap, request_cap, AST_MEDIA_TYPE_AUDIO);
+		if (!tmp_cap) {
+			AST_RWLIST_UNLOCK(&backends);
+			return NULL;
+		}
+
+		ast_format_cap_append_from_cap(tmp_cap, request_cap, AST_MEDIA_TYPE_AUDIO);
+		if (!ast_format_cap_empty(tmp_cap)) {
 			/* We have audio - is it possible to connect the various calls to each other?
 				(Avoid this check for calls without audio, like text+video calls)
 			*/
@@ -6308,7 +6313,9 @@
 		}
 		ast_format_cap_append_from_cap(joint_cap, request_cap, AST_MEDIA_TYPE_UNKNOWN);
 		ast_format_cap_remove_by_type(joint_cap, AST_MEDIA_TYPE_AUDIO);
-		ast_format_cap_append(joint_cap, best_audio_fmt, 0);
+		if (best_audio_fmt) { /* text+video call? then, this is NULL */
+			ast_format_cap_append(joint_cap, best_audio_fmt, 0);
+		}
 		ao2_cleanup(tmp_converted_cap);
 
 		c = chan->tech->requester(type, joint_cap, assignedids, requestor, addr, cause);

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Gerrit-Project: asterisk
Gerrit-Branch: 16
Gerrit-Change-Id: Ib6a6550e0e08355745d66da8e60ef49e81f9c6c5
Gerrit-Change-Number: 15367
Gerrit-PatchSet: 2
Gerrit-Owner: Alexander Traud <pabstraud at compuserve.com>
Gerrit-Reviewer: Friendly Automation
Gerrit-Reviewer: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Joshua Colp <jcolp at sangoma.com>
Gerrit-MessageType: merged
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