96 lines
3.2 KiB
C
96 lines
3.2 KiB
C
/* Shamelessly stolen from weston and modified, original license boiler plate
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* follows.
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*/
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/*
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* Copyright © 2014, 2015 Collabora, Ltd.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of the copyright holders not be used in
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* advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The copyright holders make
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef WESTON_LINUX_DMABUF_H
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#define WESTON_LINUX_DMABUF_H
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#include <stdint.h>
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#define MAX_DMABUF_PLANES 4
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#ifndef DRM_FORMAT_MOD_INVALID
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#define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
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#endif
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struct linux_dmabuf_buffer;
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typedef void (*dmabuf_user_data_destroy_func)(
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struct linux_dmabuf_buffer *buffer);
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struct dmabuf_attributes {
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int version;
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int32_t width;
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int32_t height;
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uint32_t format;
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uint32_t flags; /* enum zlinux_buffer_params_flags */
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int n_planes;
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int fd[MAX_DMABUF_PLANES];
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uint32_t offset[MAX_DMABUF_PLANES];
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uint32_t stride[MAX_DMABUF_PLANES];
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uint64_t modifier[MAX_DMABUF_PLANES];
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};
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struct linux_dmabuf_buffer {
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struct wl_resource *buffer_resource;
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struct wl_resource *params_resource;
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void *compositor;
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struct dmabuf_attributes attributes;
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void *user_data;
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dmabuf_user_data_destroy_func user_data_destroy_func;
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/* XXX:
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*
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* Add backend private data. This would be for the backend
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* to do all additional imports it might ever use in advance.
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* The basic principle, even if not implemented in drivers today,
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* is that dmabufs are first attached, but the actual allocation
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* is deferred to first use. This would allow the exporter and all
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* attachers to agree on how to allocate.
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*
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* The DRM backend would use this to create drmFBs for each
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* dmabuf_buffer, just in case at some point it would become
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* feasible to scan it out directly. This would improve the
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* possibilities to successfully scan out, avoiding compositing.
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*/
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};
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int
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linux_dmabuf_setup(struct wl_display *display);
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struct linux_dmabuf_buffer *
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linux_dmabuf_buffer_get(struct wl_resource *resource);
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void
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linux_dmabuf_buffer_set_user_data(struct linux_dmabuf_buffer *buffer,
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void *data,
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dmabuf_user_data_destroy_func func);
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void *
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linux_dmabuf_buffer_get_user_data(struct linux_dmabuf_buffer *buffer);
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void
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linux_dmabuf_buffer_send_server_error(struct linux_dmabuf_buffer *buffer,
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const char *msg);
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#endif /* WESTON_LINUX_DMABUF_H */
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