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Otherwise updates to the tags will cause non-updated
tags to be lost downstream.

The default implementation negotiates a buffer pool and allocator
with downstream.

This makes the audio encoder base class more similar to the video
encoder base class.

The default implementation negotiates a buffer pool and allocator
with downstream.

This makes the audio decoder base class more similar to the video
decoder base class.

The default implementation negotiates a buffer pool and allocator
with downstream.

The default implementation negotiates a buffer pool and allocator
with downstream.

There won't be a tag messages on the bus, because tags
are now sent downstream for sinks to post on the bus,
and there's no sink involved here that would do that.
Secondly, the audio decoder base class only sends the
tags out once it has received some non-header data as
input, which is not something we're providing here.

And also request 16-byte aligned buffers if the subclass didn't
set anything else.

There is no more 'fourcc' typecast for format.

https://bugzilla.gnome.org/show_bug.cgi?id=681436

And also use the allocation parameters from the query if any
and if there are none set our own (16-byte alignment) on the
query.

Always set a buffer pool if none is provided and don't
set/unref a NULL buffer pool on the query.

https://bugzilla.gnome.org/show_bug.cgi?id=681436

when compiling with -DG_DISABLE_ASSERT

Instead of finishing an empty frame, call drop_frame as we're
ignoring the header frame.

https://bugzilla.gnome.org/show_bug.cgi?id=681260

From 94ccf4c to 668acee

It's not public API.

If this change causes build issues, run git clean -x -d -f; ./autogen.sh

Make sure to send a CAPS event downstream when we get our
first input caps. This fixes not-negotiated errors and
adder use with downstream elements other than fakesink.

Even gst-launch-1.0 audiotestsrc ! adder ! pulsesink works now.

Also, flag the other sink pads as FIXED_CAPS when we receive
the first CAPS event on one of the sink pads (in addition to
setting those caps on the the sink pads), so that a caps query
will just return the fixed caps from now on.

There's still a race between other upstreams checking if
caps are accepted and sending a first buffer with possibly
different caps than the first caps we receive on some other
pad, but such is life.

Also need to take into account optional fields better/properly.

https://bugzilla.gnome.org/show_bug.cgi?id=679545

Fix invalid memory access caused by broken pointer arithmetic.

If we have a uint16_t *tmpbuf and add n * dest->stride to it, we
skip twice as much as we intended to because dest->stride is in
bytes and not in pixels. This made us write beyond the end of
our allocated temp buffer, and made the unit test crash.

Not sure it actually makes any difference for plugins though.