Remove the .lib postfix from strmiids
ksuser provides KSCATEGORY_ENCODER and similar GUIDS used
wmcodecdspuuid provides MEDIASUBTYPE_H264 MEDIASUBTYPE_RAW_AAC1 and
MEDIASUBTYPE_I420 so no need to define them in dshow-formats. The
submodule will have to be updated to support this change.
Previously a DirectShow hardware encoder would get 'stuck' and couldn't
be recreated due to a strange issue with the graph filter not properly
shutting down the encoder. This would make it so that the user could
only use the encoder once, and then it wouldn't work anymore any time it
was initialized again. dshowcapture version 0.4.2 ensures that the
encoder can restart properly by manually shutting down the filter graph.
The DirectShow input source would always turn on first use, whether the
user wanted it to or not. I feel like having an activate/deactivate
option is a really nice thing to have, and makes configuration feel a
little bit less awkward.
Allow the user to select whether to buffer the source or not. The
settings are auto-detect, on, and off. Auto-Detect turns it off for
non-encoded devices, and on for encoded devices.
Webcams, internal devices, and other such things on windows do not
really need to be buffered, and buffering incurs a tiny bit of delay, so
turning off buffering is actually a little better for non-encoded
devices.
This adds support for the AverMedia C985 encoder (which is available on
C985 capture cards) as well as the C353 hardware encoder (which is
currently available on the X99S Gaming 9 motherboards).
These encoders have some limitations, such as limited resolutions
(1280x720 and 1024x768), a max GOP size of 30, and the encoder format
only supports YV12, which requires conversion if the current output
format isn't the same. The C985 and C353 encoders seem to be pretty
much identical, although it seems like the C353 has a bit more efficient
encoding.
I don't believe these are really suitable for streaming, as they do not
really have the encoding efficiency needed to stream at lower bitrates,
and seem to only support variable bitrate. However, for recording these
encoders are quite nice to have available, and work quite well.
The main module code was originally all packed in to the win-dshow.cpp
file, which isn't exactly ideal or clean if one wants to add other
things to the module as a whole.
Previously, due to a bug in libdshowcapture, the NV12 format was
actually being used for YV12 erroneously, and no actual support for YV12
existed. This fixes the bug with NV12 and adds support for YV12.
This reverts commit c3f4b0f018.
The obs_source_frame should not need to take flags to do this. This
shouldn't be a setting associated with the frame, but rather a setting
associated with the source itself. This was the wrong approach to
solving this particular problem.
Add 'flags' member variable to obs_source_frame structure.
The OBS_VIDEO_UNBUFFERED flags causes the video to play back as soon as
it's received (in the next frame playback), causing it to disregard the
timestamp value for the sake of video playback (however, note that the
video timestamp is still used for audio synchronization if audio is
present on the source as well).
This is partly a convenience feature, and partly a necessity for certain
plugins (such as the linux v4l plugin) where timestamp information for
the video frames can sometimes be unreliable.
Typedef pointers are unsafe. If you do:
typedef struct bla *bla_t;
then you cannot use it as a constant, such as: const bla_t, because
that constant will be to the pointer itself rather than to the
underlying data. I admit this was a fundamental mistake that must
be corrected.
All typedefs that were pointer types will now have their pointers
removed from the type itself, and the pointers will be used when they
are actually used as variables/parameters/returns instead.
This does not break ABI though, which is pretty nice.
This prevents certain issues I've encountered with devices where they
expect to shut down in a specific thread they started up in, as well as
a number of other issues, such as the configuration dialogs.
The configuration dialogs require that a message loop be present, and
this was not the case previously because everything was in the video
thread, which has no windows-specific code.
Configuration/crossbar/etc dialogs will now execute correctly.
This adds support for dynamic format changes on the fly. Format,
resolution, sample rate, can all now be changed by the current
directshow device on the fly.
On an asynchronous video source, the source resolution is automatically
handled by the core, and set to the resolution of the last video data
that was sent. There is no need to manually specify a resolution.
This implements audio support, allowing not only the ability to capture
the built-in audio from the video device's audio capture pin, but also
the ability to override the default audio with a custom audio device.
The DShowInput::Update function was split up and refactored a bit, as it
was getting a bit large and messy.
For the sake of consistency, renamed these two functions to include
_value at the end so they are consistent.
Renamed: To:
-------------------------------------------------------
obs_data_has_default obs_data_has_default_value
obs_data_has_autoselect obs_data_has_autoselect_value
obs_data_item_has_default obs_data_item_has_default_value
obs_data_item_has_autoselect obs_data_item_has_autoselect_value
This functionality can now be handled automatically because locale can
now be freed seaparately from obs_module_unload with
obs_module_free_locale, which is called automatically when the module is
being freed.
Autoselection is only implemented for frame rate as it doesn't make
sense to autoselect the video format (Any fills the role of library
supplied autoselection) or the resolution (it may make sense to
implement resolution matching based on the current transformation
settings in the future though)
The locale parameter was a mistake, because it puts extra needless
burden upon the module developer to have to handle this variable for
each and every single callback function. The parameter is being removed
in favor of a single centralized module callback function that
specifically updates locale information for a module only when needed.
Having the value stored here is somewhat pointless, so this is one step
in fixing the locale handling. Locale should be handled by the modules
themselves with their own loaded locale lookup information.
The biggest problem with DirectShow is that available configuration
capabilities can change if you so much as look at it the wrong way.
Previously, configuring devices often didn't configure the device
settings correctly, you would choose one setting and then another
setting wouldn't be compatible with that settings.
Let's take the terrible microsoft lifecam series for example. First,
you'd be at 640x480 happily webcam'ing away, which is using the YUY2
format. Then you decide "hey, this webcam resolution is a bit low. I
would love to have it a bit high resolution so it's a bit more crisp and
clear." You'd select 1280x720, and then suddenly the only format
supported is MJPEG output. However, the interface has to update that
fact, it can't list YUY2 if MJPEG is the only one available for this
resolution. This doesn't just apply to formats either, this applies to
framerates and such as well. Some framerates will only be supported by
certain resolutions which can in turn only be supported by certain
formats.
This causes user interface for configuration to be really be a nightmare
to manage if you want these features to be available to the user. It's
extremely annoying because you have to update all the configuration UI
after something has changed, double check the configuration values, and
if the values aren't supported, update those configuration values.
This covers the basics of devices. Mostly functional but not at 100%
yet. Uses 'libdshowcapture' library to capture directshow video/audio.
Both libdshowcapture and the plugin still need some work. Should at
least capture basic webcams and capture cards for the time being.
jp9000
martell
dodgepong
Ben Torell
Palana
BtbN