mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2024-11-22 23:22:24 +00:00
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/*
|
|
* This an unstable interface of wlroots. No guarantees are made regarding the
|
|
* future consistency of this API.
|
|
*/
|
|
#ifndef WLR_USE_UNSTABLE
|
|
#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
|
|
#endif
|
|
|
|
#ifndef WLR_RENDER_DMABUF_H
|
|
#define WLR_RENDER_DMABUF_H
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#define WLR_DMABUF_MAX_PLANES 4
|
|
|
|
/**
|
|
* A Linux DMA-BUF pixel buffer.
|
|
*
|
|
* If the buffer was allocated with explicit modifiers enabled, the `modifier`
|
|
* field must not be INVALID.
|
|
*
|
|
* If the buffer was allocated with explicit modifiers disabled (either because
|
|
* the driver doesn't support it, or because the user didn't specify a valid
|
|
* modifier list), the `modifier` field can have two values: INVALID means that
|
|
* an implicit vendor-defined modifier is in use, LINEAR means that the buffer
|
|
* is linear. The `modifier` field must not have any other value.
|
|
*
|
|
* When importing a DMA-BUF, users must not ignore the modifier unless it's
|
|
* INVALID or LINEAR. In particular, users must not import a DMA-BUF to a
|
|
* legacy API which doesn't support specifying an explicit modifier unless the
|
|
* modifier is set to INVALID or LINEAR.
|
|
*/
|
|
struct wlr_dmabuf_attributes {
|
|
int32_t width, height;
|
|
uint32_t format; // FourCC code, see DRM_FORMAT_* in <drm_fourcc.h>
|
|
uint64_t modifier; // see DRM_FORMAT_MOD_* in <drm_fourcc.h>
|
|
|
|
int n_planes;
|
|
uint32_t offset[WLR_DMABUF_MAX_PLANES];
|
|
uint32_t stride[WLR_DMABUF_MAX_PLANES];
|
|
int fd[WLR_DMABUF_MAX_PLANES];
|
|
};
|
|
|
|
/**
|
|
* Closes all file descriptors in the DMA-BUF attributes.
|
|
*/
|
|
void wlr_dmabuf_attributes_finish(struct wlr_dmabuf_attributes *attribs);
|
|
/**
|
|
* Clones the DMA-BUF attributes.
|
|
*/
|
|
bool wlr_dmabuf_attributes_copy(struct wlr_dmabuf_attributes *dst,
|
|
const struct wlr_dmabuf_attributes *src);
|
|
|
|
#endif
|