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docs/pwg/appendix-porting.xml: And something about newsegment events and caps-on-buffers to the porting guide (feel f...

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Original commit message from CVS:
* docs/pwg/appendix-porting.xml:
And something about newsegment events and caps-on-buffers to
the porting guide (feel free to improve).
This commit is contained in:
Tim-Philipp Müller 2005-09-21 15:55:12 +00:00
parent 7be2b34bc6
commit 3940710283
2 changed files with 25 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2005-09-21 Tim-Philipp Müller <tim at centricular dot net>
* docs/pwg/appendix-porting.xml:
And something about newsegment events and caps-on-buffers to
the porting guide (feel free to improve).
2005-09-21 Andy Wingo <wingo@pobox.com>
* check/gst/gstutils.c (test_buffer_probe_n_times): Add tests for

20
docs/pwg/appendix-porting.xml
View file

@ -19,6 +19,21 @@
<sect1 id="section-porting-objects">
<title>List of changes</title>
<itemizedlist>
<listitem>
<para>
Discont events have been replaced by newsegment events. In 0.9, it is
essential that you send a newsegment event downstream before you send
your first buffer (in 0.8 the scheduler would invent discont events if
you forgot them, in 0.9 this is no longer the case).
</para>
</listitem>
<listitem>
<para>
In 0.9, buffers have caps attached to them. Elements should allocate
new buffers with <function>gst_pad_alloc_buffer ()</function>. See
<xref linkend="chapter-negotiation"/> for more details.
</para>
</listitem>
<listitem>
<para>
Most functions returning an object or an object property have
@ -27,7 +42,10 @@
this change is primarily threadsafety. This means effectively
that return values of functions such as
<function>gst_element_get_pad ()</function>,
<function>gst_pad_get_name ()</function> and many more like these
<function>gst_pad_get_name ()</function>,
<function>gst_pad_get_parent ()</function>,
<function>gst_object_get_parent ()</function>,
and many more like these
have to be free'ed or unreferenced after use. Check the API
references of each function to know for sure whether return
values should be free'ed or not.