Don't use the graph scheduler anymore, instead use a more simple
method using the nodes directly. The idea is that when a node
pulls, we walk the graph backwards and collect nodes to process.
Searching stops on a node with output. Then we process the nodes,
each one in turn calling process on the next one when all dependend
nodes are processed. This is quite similar to jack2 and with some
modifications seems to work well for more complicated input/output
patterns.
Set per mix input/output buffers.
Implement mixing in the audio-dsp node.
remote: handle mix ports a little better
A device that supports continuous/step-wise frame interval will
report the correct frame intervals for index 0 and EINVAL for
every other index.
(https://linuxtv.org/downloads/v4l-dvb-apis/uapi/v4l/vidioc-enum-frameintervals.html)
Previously, the code would exit from the loop after successfully
reading index 0, without marking that the iteration of frame
interval completed. Therefore, the next time the function was
called the same frame intervals would be read, instead of advancing
to the next frame size or format type.
Instead, mark that we need to try and read the next format size.
Fixes#56
Clang++ (and g++) don't define __STDC_VERSION__ which results in
include/spa/support/log.h:101:5: error: '__STDC_VERSION__' is not defined, evaluates to 0 [-Werror,-Wundef]
#if __STDC_VERSION__ >= 199901L
include/pipewire/log.h:64:5: error: '__STDC_VERSION__' is not defined, evaluates to 0 [-Werror,-Wundef]
#if __STDC_VERSION__ >= 199901L
so check if __STDC_VERSION__ is defined before comparing.
Also, include/feature.h additionally defines __USE_ISOC99 (and
__USE_ISOC11 for C11 extension), so check these as well.
Remove the source from the data_loop with invoke to make sure it
really is removed before we destroy the node.
Based on patch by David Svensson Fors <davidsf at axis.com>
Don't use a destroy_list anymore, it's not safe anyway. Instead require
that sources be removed with (a blocking) invoke. Make sure we don't
dispatch sources that were removed from the loop.
