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248 lines
8.4 KiB
248 lines
8.4 KiB
/*
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* Copyright © 2008-2011 Kristian Høgsberg
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* Copyright © 2011 Intel Corporation
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* Copyright © 2015 Giulio Camuffo
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef WESTON_COMPOSITOR_DRM_H
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#define WESTON_COMPOSITOR_DRM_H
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#include <libweston/libweston.h>
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#include <libweston/plugin-registry.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define WESTON_DRM_BACKEND_CONFIG_VERSION 5
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struct libinput_device;
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enum weston_drm_backend_output_mode {
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/** The output is disabled */
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WESTON_DRM_BACKEND_OUTPUT_OFF,
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/** The output will use the current active mode */
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WESTON_DRM_BACKEND_OUTPUT_CURRENT,
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/** The output will use the preferred mode. A modeline can be provided
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* by setting weston_backend_output_config::modeline in the form of
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* "WIDTHxHEIGHT" or in the form of an explicit modeline calculated
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* using e.g. the cvt tool. If a valid modeline is supplied it will be
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* used, if invalid or NULL the preferred available mode will be used. */
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WESTON_DRM_BACKEND_OUTPUT_PREFERRED,
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};
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#define WESTON_DRM_OUTPUT_API_NAME "weston_drm_output_api_v1"
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struct weston_drm_output_api {
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/** The mode to be used by the output. Refer to the documentation
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* of WESTON_DRM_BACKEND_OUTPUT_PREFERRED for details.
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*
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* Returns 0 on success, -1 on failure.
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*/
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int (*set_mode)(struct weston_output *output,
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enum weston_drm_backend_output_mode mode,
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const char *modeline);
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/** The pixel format to be used by the output. Valid values are:
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* - NULL - The format set at backend creation time will be used;
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* - "xrgb8888";
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* - "rgb565"
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* - "xrgb2101010"
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*/
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void (*set_gbm_format)(struct weston_output *output,
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const char *gbm_format);
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/** The seat to be used by the output. Set to NULL to use the
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* default seat.
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*/
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void (*set_seat)(struct weston_output *output,
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const char *seat);
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/** Set the "max bpc" KMS connector property
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*
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* The property is used for working around faulty sink hardware like
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* monitors or media converters that mishandle the kernel driver
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* chosen bits-per-channel on the physical link. When having trouble,
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* try a lower value like 8. A value of 0 means that the current max
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* bpc will be reprogrammed.
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*
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* The value actually used in KMS is silently clamped to the range the
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* KMS driver claims to support. The default value is 16.
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*
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* This can be set only while the output is disabled.
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*/
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void (*set_max_bpc)(struct weston_output *output, unsigned max_bpc);
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};
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static inline const struct weston_drm_output_api *
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weston_drm_output_get_api(struct weston_compositor *compositor)
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{
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const void *api;
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api = weston_plugin_api_get(compositor, WESTON_DRM_OUTPUT_API_NAME,
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sizeof(struct weston_drm_output_api));
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return (const struct weston_drm_output_api *)api;
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}
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#define WESTON_DRM_VIRTUAL_OUTPUT_API_NAME "weston_drm_virtual_output_api_v2"
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struct drm_fb;
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typedef int (*submit_frame_cb)(struct weston_output *output, int fd,
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int stride, struct drm_fb *buffer);
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struct weston_drm_virtual_output_api {
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/** Create virtual output.
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* This is a low-level function, where the caller is expected to wrap
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* the weston_output function pointers as necessary to make the virtual
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* output useful. The caller must set up output make, model, serial,
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* physical size, the mode list and current mode. The destroy function
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* pointer must not be overwritten, as it is used by the DRM backend to
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* recognize its outputs. Instead, an auxiliary destroy callback has to
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* be provided as a parameter.
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*
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* Returns output on success, NULL on failure.
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*/
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struct weston_output* (*create_output)(struct weston_compositor *c,
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char *name,
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void (*destroy_func)(struct weston_output *base));
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/** Set pixel format same as drm_output set_gbm_format().
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*
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* Returns the set format.
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*/
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uint32_t (*set_gbm_format)(struct weston_output *output,
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const char *gbm_format);
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/** Set a callback to be called when the DRM-backend has drawn a new
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* frame and submits it for display.
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* The callback will deliver a buffer to the virtual output's the
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* owner and assumes the buffer is now reserved for the owner. The
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* callback is called in virtual output repaint function.
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* The caller must call buffer_released() and finish_frame().
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*
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* The callback parameters are output, FD and stride (bytes) of dmabuf,
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* and buffer (drm_fb) pointer.
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* The callback returns 0 on success, -1 on failure.
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*
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* The submit_frame_cb callback hook is responsible for closing the fd
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* if it returns success. One needs to call the buffer release and
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* finish frame functions if and only if this hook returns success.
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*/
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void (*set_submit_frame_cb)(struct weston_output *output,
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submit_frame_cb cb);
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/** Get fd for renderer fence.
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* The returned fence signals when the renderer job has completed and
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* the buffer is fully drawn.
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*
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* Returns fd on success, -1 on failure.
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*/
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int (*get_fence_sync_fd)(struct weston_output *output);
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/** Notify that the caller has finished using buffer */
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void (*buffer_released)(struct drm_fb *fb);
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/** Notify finish frame
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* This function allows the output repainting mechanism to advance to
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* the next frame.
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*/
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void (*finish_frame)(struct weston_output *output,
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struct timespec *stamp,
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uint32_t presented_flags);
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};
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static inline const struct weston_drm_virtual_output_api *
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weston_drm_virtual_output_get_api(struct weston_compositor *compositor)
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{
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const void *api;
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api = weston_plugin_api_get(compositor,
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WESTON_DRM_VIRTUAL_OUTPUT_API_NAME,
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sizeof(struct weston_drm_virtual_output_api));
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return (const struct weston_drm_virtual_output_api *)api;
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}
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/** The backend configuration struct.
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*
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* weston_drm_backend_config contains the configuration used by a DRM
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* backend.
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*/
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struct weston_drm_backend_config {
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struct weston_backend_config base;
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/** Whether to use the pixman renderer instead of the OpenGL ES renderer. */
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bool use_pixman;
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/** The seat to be used for input and output.
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*
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* If seat_id is NULL, the seat is taken from XDG_SEAT environment
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* variable. If neither is set, "seat0" is used. The backend will
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* take ownership of the seat_id pointer and will free it on
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* backend destruction.
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*/
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char *seat_id;
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/** The pixel format of the framebuffer to be used.
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*
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* Valid values are:
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* - NULL - The default format ("xrgb8888") will be used;
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* - "xrgb8888";
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* - "rgb565"
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* - "xrgb2101010"
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* The backend will take ownership of the format pointer and will free
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* it on backend destruction.
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*/
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char *gbm_format;
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/** Callback used to configure input devices.
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*
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* This function will be called by the backend when a new input device
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* needs to be configured.
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* If NULL the device will use the default configuration.
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*/
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void (*configure_device)(struct weston_compositor *compositor,
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struct libinput_device *device);
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/** Maximum duration for a pageflip event to arrive, after which the
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* compositor will consider the DRM driver crashed and will try to exit
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* cleanly.
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*
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* It is exprimed in milliseconds, 0 means disabled. */
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uint32_t pageflip_timeout;
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/** Specific DRM device to open
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*
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* A DRM device name, like "card0", to open. If NULL, use heuristics
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* based on seat names and boot_vga to find the right device.
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*/
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char *specific_device;
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/** Use shadow buffer if using Pixman-renderer. */
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bool use_pixman_shadow;
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* WESTON_COMPOSITOR_DRM_H */
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