Calling change_cb() whenever anything happens in the ownership of the
bus name caused trouble in PulseAudio in this scenario:
1. PulseAudio is using a device and owns the corresponding service
name.
2. Another application requests device release.
3. PulseAudio releases the device.
4. Change in the bus name ownership: PulseAudio gives up the
ownership, and nobody owns the name.
5. reserve-monitor notices that, and notifies PulseAudio.
6. Since reserve-monitor reports the device as "not busy", PulseAudio
decides to reserve the bus name immediately back to itself and
opens the device again.
The other application will forcibly take the bus name to itself, as
it should according to the protocol, but the other application may
have trouble opening the device if it tries to do that before
PulseAudio has had time to react to the NameLost signal.
This can be solved by not calling change_cb() if there are no changes
in the device busy status. In this scenario the device is considered
"not busy" while PulseAudio is owning the bus name, so PulseAudio gets
no notification when the ownership changes from PulseAudio to nobody.
[The original commit message didn't have any explanation why this
change is made, so I'll add that information here myself.
--Tanu Kaskinen]
This change is from the developers of a Haskell binding[1]. According
to them, this change isn't strictly necessary, but their code gets
significantly cleaner if they can register an operation callback that
is called when the operation is cancelled due to the context getting
disconnected.
[1] https://github.com/favonia/pulse
As pointed out by Tanu, checking both error conditions is redundant and
raises the question whether it's possible that one of the conditions is
true while the other is false.
Therefore, simplify the condition by just checking one part of the
disjunction.
The function was used to check whether the basic properties of the
Bluetooth device have been received. This can be simplified by just
checking d->device_info_valid, since the state of the audio interface
is only relevant inside pa_bluetooth_device_any_audio_connected(), which
is used to trigger the discovery callback.
While checking device_info_valid, special care must be taken with all
three possible values: when set to -1, it means some error was triggered
while getting the device properties. Therefore, these devices can also
be ignored outside bluetooth-util.
Besides that, the patch slightly modifies the behavior of the internal
API affecting pa_bluetooth_discovery_get_by_address() and
pa_bluetooth_discovery_get_by_path(), since they will return the device
no matter the state of the audio interface. This however makes sense and
should have no influence in the current codebase given that the modules
make use of devices only after the discovery hook has been triggered.
The function is used to make sure some basic information has already
been gathered before the device is being used. At this point profile
states can be ignored, since their initial value will be
PA_BT_AUDIO_STATE_INVALID and thus effectively similar to
PA_BT_AUDIO_STATE_DISCONNECTED due to audio_state_to_transport_state().
The change should make no difference given that the behavior of
pa_bluetooth_device_any_audio_connected() doesn't change: by the time
TRUE is returned, a transport needs to exist. This means a profile
will exist in CONNECTING or CONNECTED state and thus the old
implementation of device_audio_is_ready() would also have returned TRUE.
Trivially fix some style issues affecting line wrap (128 chars max with
the exception of multi-line comments, which are limited to 80),
indentation and unnecessary parentheses.
Allow configuration of number of channels when using module-jackdbus-detect
to load jack-sink and jack-source. This is useful when the default channel
count doesn't match the logical channel count desired, e.g. with multi-
channel audio interfaces.
Signed-off-by: Peter Nelson <peter@fuzzle.org>
pa_bluetooth_discovery_sync() waited until all pending method calls
had completed. I don't understand what the benefit of that could be,
so I removed the function. We should avoid blocking as much as
possible, and the code that used pa_bluetooth_discovery_sync() didn't
look like it really needed to wait for anything.
The new null implementation works with arbitrary sample specs for source
and sink. In particular, it handles a different number of channels for
source and sink.
Signed-off-by: Stefan Huber <s.huber@bct-electronic.com>
Acked-by: Peter Meerwald <p.meerwald@bct-electronic.com>
In order to support different blocksizes for source and sink (e.g, for
4-to-1 beamforming/echo canceling which involves 4 record channels and 1
playback channel) the AEC API is altered:
The blocksize for source and sink may differ (due to different sample
specs) but the number of frames that are processed in one invokation of
the AEC implementation's run() function is the same for the playback and
the record stream. Consequently, the AEC implementation's init()
function initalizes 'nframes' instead of 'blocksize' and the source's
and sink's blocksizes are derived from 'nframes'. The old API also
caused code duplication in each AEC implementation's init function for
the compution of the blocksize, which is eliminated by the new API.
Signed-off-by: Stefan Huber <s.huber@bct-electronic.com>
Acked-by: Peter Meerwald <p.meerwald@bct-electronic.com>
In case that source and sink use different sample specs (e.g., different
number of channels) the computation of the latency difference fails.
To fix this, we obtain the corresponding latencies in terms of time using
the respective sample specs instead of buffer sizes.
Signed-off-by: Stefan Huber <s.huber@bct-electronic.com>
Acked-by: Peter Meerwald <p.meerwald@bct-electronic.com>
In main() of echo-cancel-test it is wrongly assumed that the EC
implementation's init() function properly initializes sink_ss. In
contrast, pa__init() sets sink_ss by default to
sink_master->sample_spec. Fix this by setting sink_ss to default
parameters and let EC implementation's init() override these settings.
Signed-off-by: Stefan Huber <s.huber@bct-electronic.com>
Acked-by: Peter Meerwald <p.meerwald@bct-electronic.com>
Argument argv[5] is accessed when argc>4, which leads to an invalid
access for argc==5. Fix this.
Signed-off-by: Stefan Huber <s.huber@bct-electronic.com>
Acked-by: Peter Meerwald <p.meerwald@bct-electronic.com>
In addition to moving the freeing a bit later, unnecessary checks for
t->device are removed. t->device is initialized to a non-NULL value
when the transport is created, and it's never changed.
it's useless to get the same SF_FORMAT_INFO three times, just compare the
name/extention in the same loop.
Signed-off-by: Wang Xingchao <xingchao.wang@intel.com>
It doesn't matter if the function fails (I'm not sure if
it's even possible), because the read data isn't used for
anything and the daemon will terminate in any case. The
void cast should get rid of a Coverity warning.
Removing the whole pa_read() call should be ok too, but I
guess it's nice to clean up the pipe before terminating...
Coverity warned about an ignored return value. I'm not sure
if there's something that should be done if writing fails;
at least I couldn't think of anything. Would logging an
error be acceptable here?
pa__done() calls stop_thread(), and stop_thread() already
frees the smoother. The duplicate freeing is not strictly
a bug, but static analyzers (in this case Coverity) may
complain about double-freeing, because when pa__done()
"frees" the smoother (which doesn't actually ever happen),
the pointer is not nulled. pa__done() then calls
bt_transport_release(), which will also free the smoother
if it's not NULL.
The analyzer complaint could be silenced also by nulling
the pointer in pa__done(), but since this is clearly
redundant code, I chose to remove it.
This fixes bug 38728 [1]. When equalizer features are unavailable in running
pulseaudio daemon, try to load relevant module. If this fails, following error
is printed on stderr instead of a confusing traceback:
It seems that running pulseaudio does not support equalizer features and
loading module-equalizer-sink module failed. Exiting...
[1] https://bugs.freedesktop.org/show_bug.cgi?id=38728
Signed-off-by: Matěj Laitl <matej@laitl.cz>
Make the internal function bt_transport_acquire() consistent with the
API in bluetooth-util by replacing the old 'start' parameter with
exactly the opposite: 'optional'.
Therefore, all calls to the function need to negate the second
parameter.
Note also that the name is more accurate now that setup_stream() is not
called inside bt_transport_acquire().
Do not call setup_stream() automatically inside bt_transport_acquire().
Instead, the caller is responsible to use both functions as necessary.
As a first trivial step, setup_stream() is now called manually after
all calls to bt_transport_acquire(u, TRUE), with the exception of
setup_transport() where the thread is still about to start and thus
setup_stream() will be called later on from thread_func().
All D-Bus infrastructure is now unused after bluetooth-util has covered
the pieces that were pending. Therefore, all D-Bus related code in
module-bluetooth-device can be safely removed.
The transport state also reflects the state of the audio interface. The
state redundancy can thus be minimized by always using the first one,
and avoiding the use of profile-specific states with the exception of
finding out the initial state of a transport.
The state of this interface is needed for one single reason: we need to
wait until all profiles have been connected (or more precisely, until
are connection attempts are finished). This can be made more explicit in
the code by just checking the CONNECTING state (and not loading
module-bluetooth-device during that state), but otherwise treating all
transport types equally.
Ideally, audio_state should be completely removed but it's left there to
avoid an issue with module-card-restore, as documented in the source
code's comments.
Transports can be acquired with different access rights, but in practice
"rw" was always used inside module-bluetooth-device. In addition, this
feature is removed in BlueZ 5.0 and therefore it is convenient to
abstract all this inside bluetooth-util.
Use transport state to calculate the corresponding port availability,
and while doing so use bluetooth-util to receive profile state updates
instead of directly parsing D-Bus PropertyChanged signals.
