From 9785e8d0902f139425e318c9df84f1857adf6aaa Mon Sep 17 00:00:00 2001
From: Jacek Konieczny <jkonieczny@eggsoft.pl>
Date: Fri, 25 Mar 2016 16:42:12 +0100
Subject: [PATCH] app_echo: forward and generate VIDUPDATE frames
When using app_echo via WebRTC with VP8 video the video would appear
only after a few minutes, because there would be nothing to request
a full reference frame.
This fixes the problem in both ways:
- echos any VIDUPDATE frames received on the channel
- sends one such frame when first video frame is to be forwarded
This makes the echo work with Firefox and Chrome WebRTC implementation.
ASTERISK-25867 #close
Change-Id: I73bda87bf7532ee8bfb28d917045a21034908c1e
---
apps/app_echo.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/apps/app_echo.c b/apps/app_echo.c
index 2ec9d709b4..972e59f0ae 100644
--- a/apps/app_echo.c
+++ b/apps/app_echo.c
@@ -58,6 +58,7 @@ static const char app[] = "Echo";
static int echo_exec(struct ast_channel *chan, const char *data)
{
int res = -1;
+ int fir_sent = 0;
while (ast_waitfor(chan, -1) > -1) {
struct ast_frame *f = ast_read(chan);
@@ -66,6 +67,22 @@ static int echo_exec(struct ast_channel *chan, const char *data)
}
f->delivery.tv_sec = 0;
f->delivery.tv_usec = 0;
+ if (f->frametype == AST_FRAME_CONTROL
+ && f->subclass.integer == AST_CONTROL_VIDUPDATE) {
+ if (ast_write(chan, f) < 0) {
+ ast_frfree(f);
+ goto end;
+ }
+ fir_sent = 1;
+ }
+ if (!fir_sent && f->frametype == AST_FRAME_VIDEO) {
+ struct ast_frame frame = {
+ .frametype = AST_FRAME_CONTROL,
+ .subclass.integer = AST_CONTROL_VIDUPDATE,
+ };
+ ast_write(chan, &frame);
+ fir_sent = 1;
+ }
if (f->frametype != AST_FRAME_CONTROL
&& f->frametype != AST_FRAME_MODEM
&& f->frametype != AST_FRAME_NULL
--
GitLab