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render: introduce wlr_allocator
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3 changed files with 63 additions and 0 deletions
42
include/render/allocator.h
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42
include/render/allocator.h
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#ifndef RENDER_ALLOCATOR
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#define RENDER_ALLOCATOR
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#include <stdbool.h>
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#include <wayland-server-core.h>
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#include <wlr/render/dmabuf.h>
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#include <wlr/render/drm_format_set.h>
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struct wlr_allocator;
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struct wlr_allocator_interface {
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struct wlr_buffer *(*create_buffer)(struct wlr_allocator *alloc,
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int width, int height, const struct wlr_drm_format *format);
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void (*destroy)(struct wlr_allocator *alloc);
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};
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struct wlr_allocator {
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const struct wlr_allocator_interface *impl;
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struct {
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struct wl_signal destroy;
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} events;
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};
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/**
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* Destroy the allocator.
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*/
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void wlr_allocator_destroy(struct wlr_allocator *alloc);
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/**
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* Allocate a new buffer.
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*
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* When the caller is done with it, they must unreference it by calling
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* wlr_buffer_drop.
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*/
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struct wlr_buffer *wlr_allocator_create_buffer(struct wlr_allocator *alloc,
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int width, int height, const struct wlr_drm_format *format);
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// For wlr_allocator implementors
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void wlr_allocator_init(struct wlr_allocator *alloc,
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const struct wlr_allocator_interface *impl);
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#endif
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20
render/allocator.c
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20
render/allocator.c
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#include <assert.h>
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#include <stdlib.h>
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#include "render/allocator.h"
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void wlr_allocator_init(struct wlr_allocator *alloc,
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const struct wlr_allocator_interface *impl) {
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assert(impl && impl->destroy && impl->create_buffer);
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alloc->impl = impl;
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wl_signal_init(&alloc->events.destroy);
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}
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void wlr_allocator_destroy(struct wlr_allocator *alloc) {
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wl_signal_emit(&alloc->events.destroy, NULL);
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alloc->impl->destroy(alloc);
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}
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struct wlr_buffer *wlr_allocator_create_buffer(struct wlr_allocator *alloc,
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int width, int height, const struct wlr_drm_format *format) {
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return alloc->impl->create_buffer(alloc, width, height, format);
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}
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@ -1,4 +1,5 @@
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wlr_files += files(
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'allocator.c',
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'dmabuf.c',
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'egl.c',
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'drm_format_set.c',
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