Thanks! Brad.
However I use two queues for audio and video separately but one pipeline. So it
would be impossible for me to pause the pipeline? because the application can
play video very well even the audio is blocked.
Why the alsasink will drop all packets(frames) after a break or so? thanks again
Shenhong
Subject: RE: [gst-embedded] Question on gst_plugin alsasinkDate: Wed, 18 Jun
2008 16:55:38 +0800From: [EMAIL PROTECTED]: [EMAIL PROTECTED]; [EMAIL
PROTECTED]; gstreamer-embedded@lists.sourceforge.net
yes, you can refernce how to use queue. you can set water mark in queue.And
then post message to bus if lower than mater mark. in your main app you can
recieve the message to pause the pipeline.
if higher water mark, you can use the same mechanism.
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Zhao
Liang-E3423CSent: Wednesday, June 18, 2008 4:49 PMTo: Shenhong Wang; [EMAIL
PROTECTED]: Re: [gst-embedded] Question on gst_plugin alsasink
Hi shenhong,
A simply solution you can try.
Put a queue before alsasink, when queue is dry, pause pipeline, and restart
pipeline when queue bufferred enough data.
Best RegardsZhao Liang
From: Shenhong Wang [mailto:[EMAIL PROTECTED] Sent: Wednesday, June 18, 2008
4:44 PMTo: Zhao Liang-E3423C; [EMAIL PROTECTED]: RE: [gst-embedded] Question on
gst_plugin alsasink
Hi, Zhao Liang:Generally, the aacdec &alsasink will not play out any audio
frames(packets) after its source element has a break to send audio frames
(packets) to them. It looks the alsasink drops all frames(packets) from the
break. The break is needed because we have more video frames and sometime the
wireless signal is not good. It looks the aacdec is slower than the expectation
from alsasink.If so, how to fix the issue? thanks! best Regards!Shenhong
Subject: RE: [gst-embedded] Question on gst_plugin alsasinkDate: Wed, 18 Jun
2008 14:29:27 +0800From: [EMAIL PROTECTED]: [EMAIL PROTECTED];
gstreamer-embedded@lists.sourceforge.net
Hi Shenhong,
Your issue is very similar with the issue I even met. I think it is due to
gstbaseaudiosink/gstaudiosink, it will drop the packets by gstringbuffer when
read rate is bigger than write rate in ringbuffer, please see gstringbuffer.c
gst_ring_buffer_commit_full ().
For the rootcause, I think maybe the alsasink audiodevice buffer is too big or
your aac decoder is too slow.
Best RegardsZhao Liang
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shenhong
WangSent: Wednesday, June 18, 2008 2:21 PMTo: [EMAIL PROTECTED]: [gst-embedded]
Question on gst_plugin alsasink
Dear all,Now we are using alsasink to play audio on Marvell PXA310 board. The
audio is aac format. The audio frames(packets) are frequently sent to the aac
decoder & alsasink to play out. Unfortunately only the begining frames can be
played out and then nothing is played out. If we save those audio frames into a
file, the aac decoder&alsasink can be successfully played out. It means the
audio frames are ok. Could anyone tell me what's the difference for alsasink to
process audio packets and files? How to fix the above issue? thank you very
much! Best Regards!Shenhong WANG
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