This way the compiler is able to detect cases when
a pointer is specified instead of an array.
Furthermore, incompatible pointer types can also
be diagnosed in `SPA_FOR_EACH_ELEMENT()`.
This is somewhat similar to the S32->F32 conversion improvements,
but here things a bit more tricky...
The main consideration is that the limits to which we clamp
must be valid 32-bit signed integers, but not all such integers
are exactly losslessly representable in `float32_t`.
For example it we'd clamp to `2147483647`,
that is actually a `2147483648.0f`,
and `2147483648` is not a valid 32-bit signed integer,
so the post-clamp conversion would basically be UB.
We don't have this problem for negative bound, though.
But as we know, any 25-bit signed integer is losslessly
round-trippable through float32_t, and since multiplying by 2
only changes the float's exponent, we can clamp to `2147483520`!
The algorithm of selection of the pre-clamping scale is unaffected.
This additionally avoids right-shift, and thus is even faster.
As `test_lossless_s32_lossless_subset` shows,
if the integer is in the form of s25+shift,
the maximal absolute error is finally zero.
Without going through `float`->`double`->`int`,
i'm not sure if the `float`->`int` conversion
can be improved further.
There's really no point in doing that s25_32 intermediate step,
to be honest i don't have a clue why the original implementation
did that \_(ツ)_/¯.
Both `S25_SCALE` and `S32_SCALE` are powers of two,
and thus are both exactly representable as floats,
and reprocial of power-of-two is also exactly representable,
so it's not like that rescaling results in precision loss.
This additionally avoids right-shift, and thus is even faster.
As `test_lossless_s32_lossless_subset` shows,
if the integer is in the form of s25+shift,
the maximal absolute error became even lower,
but not zero, because F32->S32 still goes through S25 intermediate.
I think we could theoretically do better,
but then the clamping becomes pretty finicky,
so i don't feel like touching that here.
At the very least, we should go through s25_32 intermediate
instead of s24_32, to avoid needlessly loosing 1 LSB precision bit.
That being said, i suspect it's still not doing the right thing.
Why are we silently dropping those 7 LSB bits?
Is that really the way to do it?
At the very least, we should go through s25_32 intermediate
instead of s24_32, to avoid needlessly loosing 1 LSB precision bit.
FIXME: the noise codepath is not covered with tests.
The largest integer that 32-bit floating point can exactly represent
is actually `(2^24)-1`, not`(2^23)-1` like the code assumes.
This means, whenever we use s24 as an intermediate step
to go between f32 and s32, we lose a bit of precision.
s25_32 is really a i32 with highest byte always being a sign byte.
Printing was done by adding
```
for(int e = 0; e != 13; ++e)
fprintf(stderr, "%16.32e,", ((float*)m1)[e]);
```
to `compare_mem`. I don't like how these tests work.
https://godbolt.org/z/abe94sedT
A driver can't be async, we always need to be able to trigger it
to start it so increment the required field.
Fixes an issue with asunc drivers such as the video-src example or gnome
screen sharing.
32 bits are enough, and additionally this also fixes an incorrect
format string, which caused the default `audio.rate` to be
incorrectly set on some platforms, such as 32-bit arm ones.
Fixes#4080
This commit moves the check that determines whether the mode
argument of `open*()` exists into a separate function.
With that, the check is fixed because previously it failed to
account for the fact that `O_TMPFILE` is not a power of two.
Furthermore, add `assert()`s in the fortified variants that
ensure that no mode is required by the specified flags.
Can be used to group ports together. Mostly because they are all from
the same stream and split into multiple ports by audioconvert/adapter.
Also useful for the alsa sequence to group client ports together.
Also interesting when pw-filter would be able to handle streams in the
future to find out what ports belong to what streams.
This prints changed state, props and params when run with -m and running
the `info` command. We try to print only things that have changed. It
would probably be good to make the props (and params) print a diff of
what's changed as well.
If the sender is reset, the RTP stream may return, but may no longer
correspond to the stream for which we loaded this instance of
module-rtp-source. A power cycle or network reset on Dante devices
causes a new SDP and SSRC to be selected, for example.
So let's make sure we don't consider invalid receives while tracking our
"receiving" state. Arguable, we should bail entirely if this happens.
This fixes the endianness of the parsed broadcast code. It also
fixes pontetial out-of-bouns write by using a bigger, temporary
bcode string, then, after checking it's length, copying it's content
to big_entry->broadcast_code.
PipeWire expects the SPA_TYPE_OBJECT_ParamBuffers to be valid after
setting SPA_PARAM_Format. The pipewiresink knows the final buffer size
only after the pipewirepool has been activated.
There is a race between PipeWire asking the pipewiresink for the buffers
and GStreamer activating the buffer pool. If GStreamer has not activated
the buffer pool before PipeWire asks for the Buffer params, PipeWire
won't allocate buffers with the correct type and size.
The chance of hitting this window increases, if the upstream GStreamer
element doesn't use the buffer pool. In this case the buffer pool is
activated by the first buffer that arrives at the pipewiresink, which
may take some time.
Instead of not updating the Buffer params when the buffer pool is not
active, wait for the buffer pool to become active.
Add a helper function for updating the params instead of handling it in
the pool_activated callback. This allows to explicitly set the params
from the element.
roc-toolkit commit 03d29eb97211ca87593566998c5087590c1bae38 [0]
("Add sample_format() and pcm_format() to SampleSpec") made
a change in how the packet encoding is determined. Specifically:
This commit introduces small breaking change in C API:
when we search for packet_encoding compatible with
frame_encoding, we now take into account format too.
It means that if you use ROC_FORMAT_PCM_FLOAT32 in frame_encoding,
ROC_PACKET_ENCODING_AVP_L16_STEREO will not be selected automatically
anymore, and you need to specify it manually via packet_encoding.
This causes module-roc-sink to fail to set up the ROC sender:
roc_api: bad configuration: failed to select packet_encoding matching frame_encoding, set roc_sender_config.packet_encoding manually
So specify `ROC_PACKET_ENCODING_AVP_L16_STEREO` explicitly
as the packet encoding. This seems to work with roc-toolkit 0.3,
so the required version is not changed.
Fixes#4070
[0]: 03d29eb972
It's not used anymore because it does work so well.
The problem is that while it transparently proxies param enums on
ports to peers, it fails to emit events when those peer
params change in a way that would make the enum result change as well.
This makes it quite hard to use this correctly.
Print the state of the stream not only as the numeric value, but also
print the name of the state to help the reader.
While at it, add the sink element to the log output to be able to
identify the sink that received the state change.
There isn't a good way to surface this information to the module owner
yet, so let's publish the information on the stream so we can try to
manage things in policy.
This is the driver id that the client has received and is using right
now. We don't use this yet but it could be used in the future to check
if a client has the most up to date info.
The pipewiresrc starts the stream in active state but should be inactive
if only going to PAUSED state. This patch sets the stream to inactive
when wait_started has returned in the GStreamer state tranistions.
Also resets internal started state when going PAUSED -> READY.
Fixes#4049
Make sure newer clients can work with an older server:
- Add client and server versions in the activation
- On older server, clients needs to trigger peers without CAS of status
- On older server, jack transport is started with command.
- Use client version to know when to set the INACTIVE/FINISHED
state on the server instead.
- Async clients need to trigger peers on old server.
6e581deb91 added an `spa_autoptr(DbusMessage) m`
for the new message sent out when a signal is received from modemmanager.
However this ended up shadowing the original `m` function arg,
so the code that wanted to interrogate the original arg with
`dbus_get_message_path` etc ended up interrogating this `NULL` value instead.
This triggered a NULL-check in `dbus_get_message_path` and caused
the process to abort.
Original downstream report: https://gitlab.com/postmarketOS/pmaports/-/issues/2886
Also handle the relation between a node and the driver with pw_node_peer,
like we do with the links.
Because these are refcounted, we only make one peer for a node that is
linked to another node that is also the driver (pw-play -> sink) and we
save some fds as well as some admin stuff and overhead for the refcounts.
This in return then results in less problems getting all the refcounts
right when adding/removing nodes.
Currently, the user sets the Broadcast Code via an array of integers
in the config file. However, the Bluetooth Core Specification indicates
that it should be set via a 16 byte string. This commit replaces the old
implementation with the one required by the spec.
Tested the commit with the example provided in the Core Spec:
Broadcast Code: Børne House
Result from btsnoop log:
< HCI Command: LE Create Broadcast Isochronous Group (0x08|0x0068) plen 31
...
Broadcast Code[16]: 000000006573756f4820656e72b8c342
The result matches the example given in the spec.
