Add support for latencyOffsetNsec Prop, which just controls the nsec
part of the ProcessLatency.
This is needed to support latency offset in Pulseaudio apps when using
loopbacks as front-end nodes to underlying sinks.
The expression `VBAN_PROTOCOL_SERIAL | vban_BPSList[14]` is assigned
to an 8 bit field of the header, but, `vban_BPSList[14]` being
115200, it does not fit. Instead, its index, 14, should be
placed in the header.
In addition to fixing the issue, add `-Werror=constant-conversion`,
and clang diagnostic that catches such issues.
Fixes: 1a5514e5cf ("module-vban: create streams per stream_name")
The EBU R128 filter measures the signal and generates LUFS control
notifications for further processing.
It also adds a plugin that can convert LUFS to a gain (based on a target
LUFS).
Also add an example filter-chain to enable the EBU R128 measurement and
how to use the results to adjust the volume dynamically.
See #2286#222#2210
When not using PTP as the driver, it is possible that packet receive and
the process() callback are out of sync, meaning that the target buffer
fill level might be off by upto one ptime's worth of samples
occasionally. This would make the DLL hunt for the target rate, and
cause a constantly varying delay.
Accounting for the delta between the packet receive time and the
process() time allows us to eliminate this jitter, resulting in much
more consistent rate matching.
When the driver starts, save all previous node timestamps, not just the
previous signal time.
For async nodes, uses the previous timestamps in the profiler messages
so that we get stats with 1 cycle of delay instead of bogus values
because the node is still processing.
Fixes pw-top for async nodes.
Add a filter-graph info structure with the number of inputs and outputs
in the graph definition.
Use the input/outputs to update the number of channels on the capture and
playback streams when not explicitly given. Also copy over the positions
when they match the other stream and were not explicitly specified.
Fixes#4404
Always listen on the receive socket. Find the stream with the given
stream_name of the packet and create it if it doesn't exist.
Also take the sample-rate, channels and format from the packet
parameters instead of the config.
Fixes#4400
Make SPA plugins from all the filter-graph plugins and use the plugin
loader to load them.
Because they are not in the standard plugin path in development, add
the module dir to the plugin path for now.
Make a plugin structure that is dynamically allocated for each plugin
and pass it around to the descriptor instance structures, so that they
all have access to dsp_ops without sharing a static pointer.
The problem with the static pointer is that the dsp_ops structure is
actually allocated in module-filter-chain's instance structure,
so it always points to the instance of the last filter-chain that was
loaded in the process. When this is unloaded, the other filter-chains
crash.
Take the current cycle times early and in all cases. We can use this to
get the current frame time for debugging purposes instead of the more
heavy jack_frame_time().
Rate limit the xrun warnings.
So that we can have different versions per FFT.
One possible optimization would be to split the complex number in
separate real and imag arrays. This would speed up the multiply
operations.
When we get a process callback from the capture stream but we can't
trigger the playback stream, simply consume the buffers from the capture
stream.
This can happen when the playback stream is not ready yet, for example.
If we don't consume the buffers that are ready, the converter might run
out of buffers and complain.
The current implementation uses the slope variable S to define the
filter slope. Setting S = 1 results in a constant Q value of
sqrt(2)/2, or 0.7071, which is a good default value.
However, calculating alpha from the Q value instead, as done in
RBJ's cookbook [1], the filter shape can be changed which might
be desired for certain applications and provides flexibility.
Since the current implementation always defaulted to using S = 1,
make sure that configurations missing Q uses the same slope value.
[1] = https://www.w3.org/TR/audio-eq-cookbook/
First make instances of all the plugins and then try to link them up.
Otherwise, depending on the order the plugins are defined in the config,
a link will try to create port data and set it on the instance, which is
still NULL and we crash.
