Allows rescaling resolution for GPU encoders and allows moving
rescaling for CPU encoders from CPU to GPU
Rescaling is implemented via core video mixes; encoders create
their own core mix with matching width/height/format/colorspace/
range when gpu scaling is enabled and no matching core video
mix exists
Effectively reverting parts of d314d47, this commit removes the new
functions that got added to remove the flags parameter. Instead, it just
marks the parameter as unused and documents this. Having what is
effectively an API break just to remove a parameter is a bit overkill.
The other parts of d314d47 which cleaned up the usage of the flags
parameter are untouched here.
This deprecates the following functions, replacing them with new
versions:
- `obs_output_can_begin_data_capture()` - now `*capture2()`
- `obs_output_initialize_encoders()` - now `*encoders2()`
- `obs_output_begin_data_capture()` - now `*capture2()`
The flags parameter was initially designed to support audio-only or
video-only operation of an output which had the `OBS_OUTPUT_AV` flag,
however, full support for that was never implemented, and there are
likely fundamental issues with an implementation, mainly that most
outputs are programmed assuming that there will always be at least one
audio and one video track. This requires new flags specifying support
for optional audio/video, among other things.
An implementation to allow audio/video to be optional is best done
using the flag technique above, with audio/video enablement specified
by whether media (raw, `video_t/audio_t`) or encoder (`obs_encoder_t`)
objects are specified.
Since every implementation I could find always specifies `flags` as 0,
I was able to safely conclude that immediately removing the parameter's
functionality is safe to do.
Split render_texture and derived fields in obs_core_video into new
obs_core_video_mix struct. Add new APIs to add additional obs_view to the render loop, each with a separate render_texture / obs_core_video_mix.
obs_find_modules2 allows the ability to get the module name in the
callback, and the change to obs_find_modules2 also adds the ability to
find out whether any modules failed to load or not.
There's no reason to expose these to scripting. Additional context: More
functions/structures will be added related to loading all modules, and
there's no reason to expose them to scripting either.
Allows a frontend the ability to set the maximum audio buffering
latency, and specify whether that audio buffering is either fixed (to
the maximum audio buffering latency), or dynamically increasing from 0.
This will be useful if the user wishes to output audio to devices or
through a virtual audio device at a guaranteed minimal latency.
HLG output uses MovieLabs-recommended procedure.
- If peak luminance is greater than 1000, use maxRGB EETF to 1000.
- Otherwise, don't tonemap.
- Then use normal HLG conversion procedure with gamma 1.2 (1000 nits).
The fade transition could benefit by providing NULL to differentiate a
real source texture from the transparent placeholder. This would give it
a chance to fade correctly for source transitions.
This provides the framework for automatically compositing SDR and HDR
sources together. Source will need to leverage the new
video_get_color_space to opt into HDR support.
With this, you can now cast normal obs objects (services, outputs,
sources, encoders) to an obs_object_t, and then use obs_object_*
functions to get references, release references, and similar for weak
object references as well. This allows the ability for the frontend to
use an object of any of those types interchangeably in certain
situations without having to handle each specific type individually.
This is useful because the properties view in particular doesn't care
what type of object it uses, it just needs to be able to hold weak
references to abstract OBS objects.
Deprecates:
obs_source_addref()
obs_output_addref()
obs_encoder_addref()
obs_service_addref()
obs_scene_addref()
These functions should be considered unsafe and not used. Instead, use:
obs_source_get_ref()
obs_output_get_ref()
obs_encoder_get_ref()
obs_service_get_ref()
obs_scene_get_ref()
These functions return a pointer to the incremented object only if the
object is still valid, otherwise they will return null, indicating that
the object is no longer valid or is unsafe to use.
The reason why this is being done is because certain third party plugins
seem to be using addref, and are somehow managing to call addref on
sources that have already been fully released. For the sake of safety,
almost all usage of these functions within OBS have also been replaced
as well.
