Adds the following changes:
- Prioritize YUV formats over non-YUV formats for performance and to
prevent intermediary filters
- Directly connect filters when possible to avoid intermediary filters
When frames were dropped, it would also drop I-frames, which can mess
with the keyframe calculation of certain services that depend on
I-frames in their output protocol (such as HLS).
The minimum and maximum color range values were not being set by the
video_format_get_parameters function when full range was in use; I
assume it's because the expected min/max values of full range is
{0.0, 0.0, 0.0} and {1.0, 1.0, 1.0}, so I'm just making it so that it
sets those values if using full range.
Way to replicate the issue (windows):
1.) Create a win-dshow device capture source
2.) Select a device and set it to a YUV color format to enable YUV color
conversion
3.) Select "Full Range" in the color range property.
4.) Restart OBS, the device will then start up, but will display green
due to the fact that the min/max range values were never set, and are
left at their default value of 0.
Due to a bad 'if' expression, when a filter that is not last in the
chain is disabled or being bypassed, it ends up still calling the
filter's video processing function unintentionally.
This fix makes sure that it only calls the appropriate render functions
if the next filter target is the source, otherwise it will just call
obs_source_video_render to process the next filter in the chain.
How to replicate the bug:
1. Create two crop filters on the same source
2. Give each crop filter a different distinct value
3. Disable both crop filters
4. The image would still be cropped
The normal scaling methods cannot sample enough pixels to create an
accurate output image when the output size is under half the base size,
so use the bilinear low resolution scaling effect in that case instead
to ensure a more accurate low resolution image.
If you don't need to see what's displayed, then this is particularly
useful for two reasons:
1. It reduces the number of draw/present calls
2. It can prevent issues with certain hardware setups where rendering on
a monitor hooked up to a separate card can experience slowdowns
Use std::abs instead of abs to avoid loss in precision and also fix
the corresponding warning from clang (3.5.0):
warning: using integer absolute value function 'abs' when argument is
of floating point type [-Wabsolute-value]
Closesjp9000/obs-studio#414
This reverts commit 99c674e41f.
These commits were originally added to allow multiple user interfaces to
use the same plugins, but I soon realized that multiple user interfaces
can use multiple libobs versions, so each user interface should have its
own set of plugins to manage. Some user interfaces may not wish to use
certain plugins anyway, so this fixes that issue as well.
This reverts commit 92d800cc18, reversing
changes made to 35a4acede0.
These commits were originally added to allow multiple user interfaces to
use the same plugins, but I soon realized that multiple user interfaces
can use multiple libobs versions, so each user interface should have its
own set of plugins to manage. Some user interfaces may not wish to use
certain plugins anyway, so this fixes that issue as well.
The kCGDisplayStreamShowCursor option used with the dictionary does not
work if you assign @true or @false to it. After some testing, it needs
to point to the id cast of either kCFBooleanTrue or kCFBooleanFalse in
order for it to work properly.
If it doesn't use either of those values, the display stream seems to
use its internal default, which on 10.8 and 10.9 is visible, and 10.10+
is invisible, which would explain why people on 10.10 couldn't get the
cursor to capture.
This adds utility functions for determining which
codecs and formats are supported by loaded FFMpeg
libraries. This includes validating the codecs that
a particular format supports.
Some formats (like WMV) would send out audio packets that
had channels set but did not specify a channel layout.
Solution is to no longer rely on channel layout to get the
channels and just get the channel count directly off the
FFmpeg audio frame.
All audio encoders are currently having the service-specific settings
applied to them, so this makes it so that it checks which track the
stream is set to and only applies it to that specific encoder.
Instead of manually setting the blend state to the desired values, use
gs_reset_blend_state to ensure we have the default blend state (which
for color is a typical srcalpha/invsrcalpha alpha blending operation,
then the alpha channels are added together).
This fixes an issue where filtered scenes would look strange due to the
fact that alpha was not being blended properly.
This allows the ability to separate the blend states of color and alpha.
The default blend state has also changed so that alpha is always added
together to ensure that the destination image always gets an alpha value
that is actually usable after the operation (for render targets).
Old default state:
color source: GS_BLEND_SRCALPHA, color dest: GS_BLEND_INVSRCALPHA
alpha source: GS_BLEND_SRCALPHA, alpha dest: GS_BLEND_INVSRCALPHA
New default state:
color source: GS_BLEND_SRCALPHA, color dest: GS_BLEND_INVSRCALPHA
alpha source: GS_BLEND_ONE, alpha dest: GS_BLEND_ONE
