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/*
* 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
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