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protocols: Use protocols from the wayland-protocols dependency

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We can generate protocol code for wayland-protocols directly from the
dependency instead of shipping our own copy.
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columbarius 2022-05-05 22:04:22 +02:00
parent 14852efb05
commit 4516d8b79e
3 changed files with 4 additions and 584 deletions
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362
protocols/linux-dmabuf-unstable-v1.xml
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@ -1,362 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<protocol name="linux_dmabuf_unstable_v1">
<copyright>
Copyright © 2014, 2015 Collabora, Ltd.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice (including the next
paragraph) shall be included in all copies or substantial portions of the
Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
</copyright>
<interface name="zwp_linux_dmabuf_v1" version="3">
<description summary="factory for creating dmabuf-based wl_buffers">
Following the interfaces from:
https://www.khronos.org/registry/egl/extensions/EXT/EGL_EXT_image_dma_buf_import.txt
https://www.khronos.org/registry/EGL/extensions/EXT/EGL_EXT_image_dma_buf_import_modifiers.txt
and the Linux DRM sub-system's AddFb2 ioctl.
This interface offers ways to create generic dmabuf-based
wl_buffers. Immediately after a client binds to this interface,
the set of supported formats and format modifiers is sent with
'format' and 'modifier' events.
The following are required from clients:
- Clients must ensure that either all data in the dma-buf is
coherent for all subsequent read access or that coherency is
correctly handled by the underlying kernel-side dma-buf
implementation.
- Don't make any more attachments after sending the buffer to the
compositor. Making more attachments later increases the risk of
the compositor not being able to use (re-import) an existing
dmabuf-based wl_buffer.
The underlying graphics stack must ensure the following:
- The dmabuf file descriptors relayed to the server will stay valid
for the whole lifetime of the wl_buffer. This means the server may
at any time use those fds to import the dmabuf into any kernel
sub-system that might accept it.
To create a wl_buffer from one or more dmabufs, a client creates a
zwp_linux_dmabuf_params_v1 object with a zwp_linux_dmabuf_v1.create_params
request. All planes required by the intended format are added with
the 'add' request. Finally, a 'create' or 'create_immed' request is
issued, which has the following outcome depending on the import success.
The 'create' request,
- on success, triggers a 'created' event which provides the final
wl_buffer to the client.
- on failure, triggers a 'failed' event to convey that the server
cannot use the dmabufs received from the client.
For the 'create_immed' request,
- on success, the server immediately imports the added dmabufs to
create a wl_buffer. No event is sent from the server in this case.
- on failure, the server can choose to either:
- terminate the client by raising a fatal error.
- mark the wl_buffer as failed, and send a 'failed' event to the
client. If the client uses a failed wl_buffer as an argument to any
request, the behaviour is compositor implementation-defined.
Warning! The protocol described in this file is experimental and
backward incompatible changes may be made. Backward compatible changes
may be added together with the corresponding interface version bump.
Backward incompatible changes are done by bumping the version number in
the protocol and interface names and resetting the interface version.
Once the protocol is to be declared stable, the 'z' prefix and the
version number in the protocol and interface names are removed and the
interface version number is reset.
</description>
<request name="destroy" type="destructor">
<description summary="unbind the factory">
Objects created through this interface, especially wl_buffers, will
remain valid.
</description>
</request>
<request name="create_params">
<description summary="create a temporary object for buffer parameters">
This temporary object is used to collect multiple dmabuf handles into
a single batch to create a wl_buffer. It can only be used once and
should be destroyed after a 'created' or 'failed' event has been
received.
</description>
<arg name="params_id" type="new_id" interface="zwp_linux_buffer_params_v1"
summary="the new temporary"/>
</request>
<event name="format">
<description summary="supported buffer format">
This event advertises one buffer format that the server supports.
All the supported formats are advertised once when the client
binds to this interface. A roundtrip after binding guarantees
that the client has received all supported formats.
For the definition of the format codes, see the
zwp_linux_buffer_params_v1::create request.
Warning: the 'format' event is likely to be deprecated and replaced
with the 'modifier' event introduced in zwp_linux_dmabuf_v1
version 3, described below. Please refrain from using the information
received from this event.
</description>
<arg name="format" type="uint" summary="DRM_FORMAT code"/>
</event>
<event name="modifier" since="3">
<description summary="supported buffer format modifier">
This event advertises the formats that the server supports, along with
the modifiers supported for each format. All the supported modifiers
for all the supported formats are advertised once when the client
binds to this interface. A roundtrip after binding guarantees that
the client has received all supported format-modifier pairs.
For legacy support, DRM_FORMAT_MOD_INVALID (that is, modifier_hi ==
0x00ffffff and modifier_lo == 0xffffffff) is allowed in this event.
It indicates that the server can support the format with an implicit
modifier. When a plane has DRM_FORMAT_MOD_INVALID as its modifier, it
is as if no explicit modifier is specified. The effective modifier
will be derived from the dmabuf.
For the definition of the format and modifier codes, see the
zwp_linux_buffer_params_v1::create and zwp_linux_buffer_params_v1::add
requests.
</description>
<arg name="format" type="uint" summary="DRM_FORMAT code"/>
<arg name="modifier_hi" type="uint"
summary="high 32 bits of layout modifier"/>
<arg name="modifier_lo" type="uint"
summary="low 32 bits of layout modifier"/>
</event>
</interface>
<interface name="zwp_linux_buffer_params_v1" version="3">
<description summary="parameters for creating a dmabuf-based wl_buffer">
This temporary object is a collection of dmabufs and other
parameters that together form a single logical buffer. The temporary
object may eventually create one wl_buffer unless cancelled by
destroying it before requesting 'create'.
Single-planar formats only require one dmabuf, however
multi-planar formats may require more than one dmabuf. For all
formats, an 'add' request must be called once per plane (even if the
underlying dmabuf fd is identical).
You must use consecutive plane indices ('plane_idx' argument for 'add')
from zero to the number of planes used by the drm_fourcc format code.
All planes required by the format must be given exactly once, but can
be given in any order. Each plane index can be set only once.
</description>
<enum name="error">
<entry name="already_used" value="0"
summary="the dmabuf_batch object has already been used to create a wl_buffer"/>
<entry name="plane_idx" value="1"
summary="plane index out of bounds"/>
<entry name="plane_set" value="2"
summary="the plane index was already set"/>
<entry name="incomplete" value="3"
summary="missing or too many planes to create a buffer"/>
<entry name="invalid_format" value="4"
summary="format not supported"/>
<entry name="invalid_dimensions" value="5"
summary="invalid width or height"/>
<entry name="out_of_bounds" value="6"
summary="offset + stride * height goes out of dmabuf bounds"/>
<entry name="invalid_wl_buffer" value="7"
summary="invalid wl_buffer resulted from importing dmabufs via
the create_immed request on given buffer_params"/>
</enum>
<request name="destroy" type="destructor">
<description summary="delete this object, used or not">
Cleans up the temporary data sent to the server for dmabuf-based
wl_buffer creation.
</description>
</request>
<request name="add">
<description summary="add a dmabuf to the temporary set">
This request adds one dmabuf to the set in this
zwp_linux_buffer_params_v1.
The 64-bit unsigned value combined from modifier_hi and modifier_lo
is the dmabuf layout modifier. DRM AddFB2 ioctl calls this the
fb modifier, which is defined in drm_mode.h of Linux UAPI.
This is an opaque token. Drivers use this token to express tiling,
compression, etc. driver-specific modifications to the base format
defined by the DRM fourcc code.
Warning: It should be an error if the format/modifier pair was not
advertised with the modifier event. This is not enforced yet because
some implementations always accept DRM_FORMAT_MOD_INVALID. Also
version 2 of this protocol does not have the modifier event.
This request raises the PLANE_IDX error if plane_idx is too large.
The error PLANE_SET is raised if attempting to set a plane that
was already set.
</description>
<arg name="fd" type="fd" summary="dmabuf fd"/>
<arg name="plane_idx" type="uint" summary="plane index"/>
<arg name="offset" type="uint" summary="offset in bytes"/>
<arg name="stride" type="uint" summary="stride in bytes"/>
<arg name="modifier_hi" type="uint"
summary="high 32 bits of layout modifier"/>
<arg name="modifier_lo" type="uint"
summary="low 32 bits of layout modifier"/>
</request>
<enum name="flags">
<entry name="y_invert" value="1" summary="contents are y-inverted"/>
<entry name="interlaced" value="2" summary="content is interlaced"/>
<entry name="bottom_first" value="4" summary="bottom field first"/>
</enum>
<request name="create">
<description summary="create a wl_buffer from the given dmabufs">
This asks for creation of a wl_buffer from the added dmabuf
buffers. The wl_buffer is not created immediately but returned via
the 'created' event if the dmabuf sharing succeeds. The sharing
may fail at runtime for reasons a client cannot predict, in
which case the 'failed' event is triggered.
The 'format' argument is a DRM_FORMAT code, as defined by the
libdrm's drm_fourcc.h. The Linux kernel's DRM sub-system is the
authoritative source on how the format codes should work.
The 'flags' is a bitfield of the flags defined in enum "flags".
'y_invert' means the that the image needs to be y-flipped.
Flag 'interlaced' means that the frame in the buffer is not
progressive as usual, but interlaced. An interlaced buffer as
supported here must always contain both top and bottom fields.
The top field always begins on the first pixel row. The temporal
ordering between the two fields is top field first, unless
'bottom_first' is specified. It is undefined whether 'bottom_first'
is ignored if 'interlaced' is not set.
This protocol does not convey any information about field rate,
duration, or timing, other than the relative ordering between the
two fields in one buffer. A compositor may have to estimate the
intended field rate from the incoming buffer rate. It is undefined
whether the time of receiving wl_surface.commit with a new buffer
attached, applying the wl_surface state, wl_surface.frame callback
trigger, presentation, or any other point in the compositor cycle
is used to measure the frame or field times. There is no support
for detecting missed or late frames/fields/buffers either, and
there is no support whatsoever for cooperating with interlaced
compositor output.
The composited image quality resulting from the use of interlaced
buffers is explicitly undefined. A compositor may use elaborate
hardware features or software to deinterlace and create progressive
output frames from a sequence of interlaced input buffers, or it
may produce substandard image quality. However, compositors that
cannot guarantee reasonable image quality in all cases are recommended
to just reject all interlaced buffers.
Any argument errors, including non-positive width or height,
mismatch between the number of planes and the format, bad
format, bad offset or stride, may be indicated by fatal protocol
errors: INCOMPLETE, INVALID_FORMAT, INVALID_DIMENSIONS,
OUT_OF_BOUNDS.
Dmabuf import errors in the server that are not obvious client
bugs are returned via the 'failed' event as non-fatal. This
allows attempting dmabuf sharing and falling back in the client
if it fails.
This request can be sent only once in the object's lifetime, after
which the only legal request is destroy. This object should be
destroyed after issuing a 'create' request. Attempting to use this
object after issuing 'create' raises ALREADY_USED protocol error.
It is not mandatory to issue 'create'. If a client wants to
cancel the buffer creation, it can just destroy this object.
</description>
<arg name="width" type="int" summary="base plane width in pixels"/>
<arg name="height" type="int" summary="base plane height in pixels"/>
<arg name="format" type="uint" summary="DRM_FORMAT code"/>
<arg name="flags" type="uint" summary="see enum flags"/>
</request>
<event name="created">
<description summary="buffer creation succeeded">
This event indicates that the attempted buffer creation was
successful. It provides the new wl_buffer referencing the dmabuf(s).
Upon receiving this event, the client should destroy the
zlinux_dmabuf_params object.
</description>
<arg name="buffer" type="new_id" interface="wl_buffer"
summary="the newly created wl_buffer"/>
</event>
<event name="failed">
<description summary="buffer creation failed">
This event indicates that the attempted buffer creation has
failed. It usually means that one of the dmabuf constraints
has not been fulfilled.
Upon receiving this event, the client should destroy the
zlinux_buffer_params object.
</description>
</event>
<request name="create_immed" since="2">
<description summary="immediately create a wl_buffer from the given
dmabufs">
This asks for immediate creation of a wl_buffer by importing the
added dmabufs.
In case of import success, no event is sent from the server, and the
wl_buffer is ready to be used by the client.
Upon import failure, either of the following may happen, as seen fit
by the implementation:
- the client is terminated with one of the following fatal protocol
errors:
- INCOMPLETE, INVALID_FORMAT, INVALID_DIMENSIONS, OUT_OF_BOUNDS,
in case of argument errors such as mismatch between the number
of planes and the format, bad format, non-positive width or
height, or bad offset or stride.
- INVALID_WL_BUFFER, in case the cause for failure is unknown or
plaform specific.
- the server creates an invalid wl_buffer, marks it as failed and
sends a 'failed' event to the client. The result of using this
invalid wl_buffer as an argument in any request by the client is
defined by the compositor implementation.
This takes the same arguments as a 'create' request, and obeys the
same restrictions.
</description>
<arg name="buffer_id" type="new_id" interface="wl_buffer"
summary="id for the newly created wl_buffer"/>
<arg name="width" type="int" summary="base plane width in pixels"/>
<arg name="height" type="int" summary="base plane height in pixels"/>
<arg name="format" type="uint" summary="DRM_FORMAT code"/>
<arg name="flags" type="uint" summary="see enum flags"/>
</request>
</interface>
</protocol>

6
protocols/meson.build
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@ -1,3 +1,5 @@
wl_protocol_dir = wayland_protos.get_variable('pkgdatadir')
wayland_scanner_dep = dependency('wayland-scanner', required: false, native: true)
if wayland_scanner_dep.found()
wayland_scanner = find_program(
@ -9,9 +11,9 @@ else
endif
client_protocols = [
'linux-dmabuf-unstable-v1.xml',
wl_protocol_dir / 'unstable/linux-dmabuf/linux-dmabuf-unstable-v1.xml',
wl_protocol_dir / 'unstable/xdg-output/xdg-output-unstable-v1.xml',
'wlr-screencopy-unstable-v1.xml',
'xdg-output-unstable-v1.xml',
]
wl_proto_files = []

220
protocols/xdg-output-unstable-v1.xml
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@ -1,220 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<protocol name="xdg_output_unstable_v1">
<copyright>
Copyright © 2017 Red Hat Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice (including the next
paragraph) shall be included in all copies or substantial portions of the
Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
</copyright>
<description summary="Protocol to describe output regions">
This protocol aims at describing outputs in a way which is more in line
with the concept of an output on desktop oriented systems.
Some information are more specific to the concept of an output for
a desktop oriented system and may not make sense in other applications,
such as IVI systems for example.
Typically, the global compositor space on a desktop system is made of
a contiguous or overlapping set of rectangular regions.
Some of the information provided in this protocol might be identical
to their counterparts already available from wl_output, in which case
the information provided by this protocol should be preferred to their
equivalent in wl_output. The goal is to move the desktop specific
concepts (such as output location within the global compositor space,
the connector name and types, etc.) out of the core wl_output protocol.
Warning! The protocol described in this file is experimental and
backward incompatible changes may be made. Backward compatible
changes may be added together with the corresponding interface
version bump.
Backward incompatible changes are done by bumping the version
number in the protocol and interface names and resetting the
interface version. Once the protocol is to be declared stable,
the 'z' prefix and the version number in the protocol and
interface names are removed and the interface version number is
reset.
</description>
<interface name="zxdg_output_manager_v1" version="3">
<description summary="manage xdg_output objects">
A global factory interface for xdg_output objects.
</description>
<request name="destroy" type="destructor">
<description summary="destroy the xdg_output_manager object">
Using this request a client can tell the server that it is not
going to use the xdg_output_manager object anymore.
Any objects already created through this instance are not affected.
</description>
</request>
<request name="get_xdg_output">
<description summary="create an xdg output from a wl_output">
This creates a new xdg_output object for the given wl_output.
</description>
<arg name="id" type="new_id" interface="zxdg_output_v1"/>
<arg name="output" type="object" interface="wl_output"/>
</request>
</interface>
<interface name="zxdg_output_v1" version="3">
<description summary="compositor logical output region">
An xdg_output describes part of the compositor geometry.
This typically corresponds to a monitor that displays part of the
compositor space.
For objects version 3 onwards, after all xdg_output properties have been
sent (when the object is created and when properties are updated), a
wl_output.done event is sent. This allows changes to the output
properties to be seen as atomic, even if they happen via multiple events.
</description>
<request name="destroy" type="destructor">
<description summary="destroy the xdg_output object">
Using this request a client can tell the server that it is not
going to use the xdg_output object anymore.
</description>
</request>
<event name="logical_position">
<description summary="position of the output within the global compositor space">
The position event describes the location of the wl_output within
the global compositor space.
The logical_position event is sent after creating an xdg_output
(see xdg_output_manager.get_xdg_output) and whenever the location
of the output changes within the global compositor space.
</description>
<arg name="x" type="int"
summary="x position within the global compositor space"/>
<arg name="y" type="int"
summary="y position within the global compositor space"/>
</event>
<event name="logical_size">
<description summary="size of the output in the global compositor space">
The logical_size event describes the size of the output in the
global compositor space.
For example, a surface without any buffer scale, transformation
nor rotation set, with the size matching the logical_size will
have the same size as the corresponding output when displayed.
Most regular Wayland clients should not pay attention to the
logical size and would rather rely on xdg_shell interfaces.
Some clients such as Xwayland, however, need this to configure
their surfaces in the global compositor space as the compositor
may apply a different scale from what is advertised by the output
scaling property (to achieve fractional scaling, for example).
For example, for a wl_output mode 3840×2160 and a scale factor 2:
- A compositor not scaling the surface buffers will advertise a
logical size of 3840×2160,
- A compositor automatically scaling the surface buffers will
advertise a logical size of 1920×1080,
- A compositor using a fractional scale of 1.5 will advertise a
logical size to 2560×1620.
For example, for a wl_output mode 1920×1080 and a 90 degree rotation,
the compositor will advertise a logical size of 1080x1920.
The logical_size event is sent after creating an xdg_output
(see xdg_output_manager.get_xdg_output) and whenever the logical
size of the output changes, either as a result of a change in the
applied scale or because of a change in the corresponding output
mode(see wl_output.mode) or transform (see wl_output.transform).
</description>
<arg name="width" type="int"
summary="width in global compositor space"/>
<arg name="height" type="int"
summary="height in global compositor space"/>
</event>
<event name="done">
<description summary="all information about the output have been sent">
This event is sent after all other properties of an xdg_output
have been sent.
This allows changes to the xdg_output properties to be seen as
atomic, even if they happen via multiple events.
For objects version 3 onwards, this event is deprecated. Compositors
are not required to send it anymore and must send wl_output.done
instead.
</description>
</event>
<!-- Version 2 additions -->
<event name="name" since="2">
<description summary="name of this output">
Many compositors will assign names to their outputs, show them to the
user, allow them to be configured by name, etc. The client may wish to
know this name as well to offer the user similar behaviors.
The naming convention is compositor defined, but limited to
alphanumeric characters and dashes (-). Each name is unique among all
wl_output globals, but if a wl_output global is destroyed the same name
may be reused later. The names will also remain consistent across
sessions with the same hardware and software configuration.
Examples of names include 'HDMI-A-1', 'WL-1', 'X11-1', etc. However, do
not assume that the name is a reflection of an underlying DRM
connector, X11 connection, etc.
The name event is sent after creating an xdg_output (see
xdg_output_manager.get_xdg_output). This event is only sent once per
xdg_output, and the name does not change over the lifetime of the
wl_output global.
</description>
<arg name="name" type="string" summary="output name"/>
</event>
<event name="description" since="2">
<description summary="human-readable description of this output">
Many compositors can produce human-readable descriptions of their
outputs. The client may wish to know this description as well, to
communicate the user for various purposes.
The description is a UTF-8 string with no convention defined for its
contents. Examples might include 'Foocorp 11" Display' or 'Virtual X11
output via :1'.
The description event is sent after creating an xdg_output (see
xdg_output_manager.get_xdg_output) and whenever the description
changes. The description is optional, and may not be sent at all.
For objects of version 2 and lower, this event is only sent once per
xdg_output, and the description does not change over the lifetime of
the wl_output global.
</description>
<arg name="description" type="string" summary="output description"/>
</event>
</interface>
</protocol>