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