<div dir="ltr">At the cb_new_buffer, you can get the buffer.<div>Like as blow code.</div><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap">static GstFlowReturn
cb_new_buffer(GstElement * sink)
{
GstSample *sample;
GstCaps *caps;
GstBuffer *buf;</pre><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"> g_signal_emit_by_name (sink, "pull-sample", &sample);</pre><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap">
<pre style="word-wrap:break-word;white-space:pre-wrap"> caps = gst_sample_get_caps (sample);
buf = gst_sample_get_buffer (sample);
</pre><div><br></div> if (sample) {
gst_sample_unref (sample);
}
return GST_FLOW_OK;
}</pre><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"><br></pre><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap">GstSample contains the reference of buffer and caps data.</pre>
<pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap">You should unref after use the sample data.</pre><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap">It is the reason why blocked after got the first data.</pre>
</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/8/27 Brendan Long <span dir="ltr"><<a href="mailto:self@brendanlong.com" target="_blank">self@brendanlong.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>How are you getting the sample? Is it
possible that you're accidentally blocking the pipeline?I think
you're supposed to use "pull-sample" to get the new sample, but if
you call "pull-sample" where there is no sample, it will block,
and depending on how you're running your pipeline, that could
block everything. That's just a guess though, since you're not
showing very much of your code.<div><div class="h5"><br>
<br>
On 08/24/2013 05:18 AM, jojo wrote:<br>
</div></div></div>
<blockquote type="cite"><div><div class="h5">
<div> Hi, </div>
<div><span style="white-space:pre-wrap"> </span>i
use the simplest pipe line again as bellow:</div>
<div><br>
</div>
<div><span style="white-space:pre-wrap"> </span>pipe
= gst_parse_launch("appsrc is-live=1 do-timestamp=1
caps=\"image/jpeg, width=1920, height=1080\" name=\"appsrc\" !
appsink name=\"appsink\"");</div>
<div><br>
</div>
<div><span style="white-space:pre-wrap"> </span>it
can get the first 1 "sample" just only.</div>
<div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>- Jojo</div>
<div><br>
</div>
</div>
<p style="color:#a0a0a8">在 2013年8月24日星期六，下午5:17，jojo 写道：</p>
<blockquote type="cite" style="border-left-style:solid;border-width:1px;margin-left:0px;padding-left:10px">
<span>
<div>
<div>
<div>Hi, </div>
<div><span style="white-space:pre-wrap"> </span>My pipeline is
:</div>
<div><br>
</div>
<div><span style="white-space:pre-wrap"> </span>pipe
= gst_parse_launch("appsrc is-live=1 do-timestamp=1
caps=image/jpeg, width=1920, height=1080 name=\"appsrc\"
! decodebin ! queue ! videoconvert ! appsink
caps=\"%s\" name=\"appsink\",
GST_VIDEO_CAPS_MAKE("BGRx")).</div>
<div><br>
</div>
<div><span style="white-space:pre-wrap"> </span>g_signal_connect
(appsink, "new-sample", G_CALLBACK (cb_new_buffer),
data);</div>
<div><br>
</div>
<div><span style="white-space:pre-wrap"> </span>in the
gstreamer v0.10, the callback is triggered if there are
new buffer, but i can not get new data from this
callback in the version 1.0.9,</div>
<div><br>
</div>
<div><span style="white-space:pre-wrap"> </span>some of my
parameters of "gst_parse_launch" are wrong ?</div>
<div><br>
</div>
<div><span style="white-space:pre-wrap"> </span>Any hins will
be helpful.</div>
<div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>- Jojo</div>
<div><br>
</div>
</div>
</div>
</div>
</span> </blockquote>
<div> <br>
</div>
<br>
<fieldset></fieldset>
<br>
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</blockquote>
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