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/*
* 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.
*/
#ifndef WESTON_LINUX_DMABUF_H
#define WESTON_LINUX_DMABUF_H
#include <stdint.h>
#define MAX_DMABUF_PLANES 4
#ifndef DRM_FORMAT_MOD_INVALID
#define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
#endif
struct linux_dmabuf_buffer;
typedef void (*dmabuf_user_data_destroy_func)(
struct linux_dmabuf_buffer *buffer);
struct dmabuf_attributes {
int32_t width;
int32_t height;
uint32_t format;
uint32_t flags; /* enum zlinux_buffer_params_flags */
int n_planes;
int fd[MAX_DMABUF_PLANES];
uint32_t offset[MAX_DMABUF_PLANES];
uint32_t stride[MAX_DMABUF_PLANES];
uint64_t modifier[MAX_DMABUF_PLANES];
};
struct linux_dmabuf_buffer {
struct wl_resource *buffer_resource;
struct wl_resource *params_resource;
struct weston_compositor *compositor;
struct dmabuf_attributes attributes;
void *user_data;
dmabuf_user_data_destroy_func user_data_destroy_func;
/* XXX:
*
* Add backend private data. This would be for the backend
* to do all additional imports it might ever use in advance.
* The basic principle, even if not implemented in drivers today,
* is that dmabufs are first attached, but the actual allocation
* is deferred to first use. This would allow the exporter and all
* attachers to agree on how to allocate.
*
* The DRM backend would use this to create drmFBs for each
* dmabuf_buffer, just in case at some point it would become
* feasible to scan it out directly. This would improve the
* possibilities to successfully scan out, avoiding compositing.
*/
};
int
linux_dmabuf_setup(struct weston_compositor *compositor);
struct linux_dmabuf_buffer *
linux_dmabuf_buffer_get(struct wl_resource *resource);
void
linux_dmabuf_buffer_set_user_data(struct linux_dmabuf_buffer *buffer,
void *data,
dmabuf_user_data_destroy_func func);
void *
linux_dmabuf_buffer_get_user_data(struct linux_dmabuf_buffer *buffer);
void
linux_dmabuf_buffer_send_server_error(struct linux_dmabuf_buffer *buffer,
const char *msg);
#endif /* WESTON_LINUX_DMABUF_H */
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