If DEBUG_FFMPEG_MUX is enabled, when starting a recording without
configuring global_stream_key, obs-ffmpeg-mux will hang. Apply same
check to global_stream_key as in init_params() to prevent this.
Add a new Linux capture based on PipeWire [1] and the Desktop portal [2].
This new capture starts by asking the Desktop portal for a screencapture session.
There are quite a few D-Bus calls involved in this, but the key points are:
1. A connection to org.freedesktop.portal.ScreenCast is estabilished, and the
available cursor modes are updated.
2. CreateSession() is called. This is the first step of the negotiation.
3. SelectSources() is called. This is when a system dialog pops up asking the
user to either select a monitor (desktop capture) or a window (window capture).
4. Start() is called. This signals the compositor that it can setup a PipeWire
stream, and start sending buffers.
The reply to this fourth call gives OBS Studio the PipeWire fd, and the id of the
PipeWire node where the buffers are being sent to. This allows creating a consumer
PipeWire stream, and receive the buffers.
Metadata cursor is always preferred, but on the lack of it, we ask the stream for
an embedded cursor (i.e. the cursor is drawn at the buffer, and OBS Studio has no
control over it.)
Window capturing is implemented as a crop operation on the buffer. Compositors
can send big buffers, and a crop rectangle, and this is used to paint a subregion
of the buffer in the scene.
The new capture is only loaded when running on EGL, since it depends on EGL to
call gs_texture_create_from_dmabuf().
[1] https://pipewire.org/
[2] https://github.com/flatpak/xdg-desktop-portal/
In preparation for the introduction of the new PipeWire-based capture,
use variables for include_directories() and target_link_libraries(),
and move them to the bottom of the file.
Per MSDN: Do not call this function from a DLL that is linked to the static C
run-time library (CRT). The static CRT requires DLL_THREAD_ATTACH and
DLL_THREAD_DETATCH notifications to function properly.
Remove beta label for YouTube - RTMPS and make it the default. Remove
YouTube - RTMP service and move the legacy RTMP urls to the Server
dropdown list.
Only auto-select WGC for desktop capture if a battery exists and
multiple GPU adapters are present. May false-positive on desktops with
a smart UPS attached, but we don't know of a better test.
When enumerating the list of encoders offered by VideoToolbox,
there's no reason we can't use the returned ID, which allows us to
remove the hardware/software encoder specific functions. At the
same time, this does add a slight complexity when localizing the
encoder name, so we can fall back to the OS-provided encoder name
if there's not a match.
The timestamp returned by mHostTime in the AudioTimeStamp structure
is the current timestamp equivalent to mach_absolute_time(), which
is relative to the machine's time base. In order to convert this
to milliseconds, it's necessary to get the host's timebase with
mach_timebase_info() and scale the timestamp accordingly, since
the rest of the timestamp synchronization code expects the timestamp
to be in milliseconds.
This is effectively equivalent to the code which was previously in
libobs/util/platform-coca.m, but must be applied here instead.
