Holds an active reference to a source during signaling of the
`source_remove` signal, to prevent receivers from being given an
already-destroyed source.
- Call obs_source_remove(source)
- Receiver 1 gets signal, calls `obs_source_release(source)`
- Receiver 2 gets signal, calls `obs_source_release(source)`,
refs == -1, source destroyed
- Receiver 3 gets signal, source already destroyed, is forced to ignore
signal due to invalid source
This is a theoretical situation which is currently possible in
obs-websocket.
Users on Wayland are displeased that they cannot see their hotkey
bindings. This enables key reporting like X11, and has the infrastructure
in place in case Wayland ever decides to allow for capturing input.
obs_source_release should not be called while iterating through the
global sources linked list, otherwise the linked list will be
compromised. Annoying.
Basically the same fix as obsproject/obs-studio#5600, but should be
slightly more optimal and a bit more explicit.
Fixes an issue pointed out in obsproject/obs-browser#333 where a source
may destroy the next source in obs_source_video_tick(), thus
invalidating the next source in the linked list. Get the next source in
the list *after* calling obs_source_video_tick() rather than before.
Closesobsproject/obs-studio#5600
When pushing to the front of an empty circular buffer, it would not
update the end_pos, so end_pos would be left on 0, and it would break
when trying to push to the back after that. The reason why this bug was
never discovered until now is because breakage only happens when pushing
to the front of an empty buffer, then pushing to the back right after
that.
These AutoRelease versions of the C++ OBSRef types do not add a ref on
construction, which is useful when accepting the result of a function
that turns a raw C pointer type that has had a reference added.
Not having these types has resulted in multiple awkward anti-patterns.
Such as immediately releasing after construction to account for the
extra addref, or avoiding using the C++ type entirely and manually
releasing it later.
Example:
```
OBSSource source = obs_get_source_by_name(name.c_str());
obs_source_release(source);
```
The whole point of these types is to avoid the need for manual releases,
and rely on the RAII mechanisms inside of C++. Additionally, the
immediate release isn't commented anywhere, resulting in confusion for
other developers looking at the code as to why things are being
immediately released.
The AutoRelease types and names are taken from obs-websocket.
When sources output NULL frames, it is generally used to disable the
source and prevent the last frame from being left on screen. However,
when the source begins outputting video again, the last frame is
still in the async cache.
Depending on the stability of the source's frame output, this still
frame can end up being shown for 5+ output frames.
By freeing the async cache when a NULL frame is submitted, we avoid
the issue of old frames being re-displayed.
Currently, ifdefs are used to determine if monitoring is supported.
This is difficult to maintain and restricts plugins from knowing if
monitoring is supported by OBS. This adds a runtime function to fix
that issue.
Adds support for using shared textures that were made with the
D3D11_RESOURCE_MISC_SHARED_NTHANDLE flag.
This increases the minimum required Windows version to Windows 8 or the
Platform Update for Windows 7. As official support is only for Win 8+
this does not change official support.
Previously we would wait for pulse to attempt to read from the monitor
source and obs buffered at least 5ms of audio data before we tried to
fill the buffer. In some cases this resulted in consistently triggering
underruns in pulse.
Instead we try to fill the buffer immediately as obs outputs audio data
and while the pa buffer is not full. We also stop trying to grow the
buffer to prevent underruns after we reach 1s of latency.
(This commit also modifies UI)
This makes it more trivial for encoder plugins to communicate to users
why specifically an encoder error might have occurred mid-stream.
When signed 32-bit audio arrived to pulseaudio-output and volume was
lowered, audio data was broken. In the function `process_volume`, the
type of the data is switched by `bytes_per_channel`. However the size of
signed 32-bit integer and the size of float are same so that the signed
32-bit integer is processed as float.
This commit changes these items.
- Use `format` instead of `bytes_per_channel` so that all the sample
types can be differentiated.
- Change `short` to `int16_t` and renames existing function
`process_short` to `process_s16` to clarify the function is
processing signed 16-bit.
Avoid nanosecond abstraction to reduce math operations.
Replace Sleep(0) with YieldProcessor(). We want the thread to remain
scheduled, the current CPU core to do less work, and the hyperthread
sibling to perform better.
Hacky profiling showed maybe 10-25 µs skid reduction per function call.
I think power/performance gains would be hard to measure, so I haven't
tried, but it would be shocking if they got worse.
