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79 lines
2.3 KiB
79 lines
2.3 KiB
#include <assert.h>
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#include <string.h>
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#include <wayland-server.h>
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#include <wlr/interfaces/wlr_buffer.h>
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#include <wlr/types/wlr_drm.h>
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#include <wlr/types/wlr_linux_dmabuf_v1.h>
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#include <wlr/util/log.h>
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#include "types/wlr_buffer.h"
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bool wlr_resource_is_buffer(struct wl_resource *resource) {
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return strcmp(wl_resource_get_class(resource), wl_buffer_interface.name) == 0;
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}
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/* struct wlr_buffer_resource_interface */
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static struct wl_array buffer_resource_interfaces = {0};
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void wlr_buffer_register_resource_interface(
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const struct wlr_buffer_resource_interface *iface) {
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assert(iface);
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assert(iface->is_instance);
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assert(iface->from_resource);
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const struct wlr_buffer_resource_interface **iface_ptr;
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wl_array_for_each(iface_ptr, &buffer_resource_interfaces) {
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if (*iface_ptr == iface) {
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wlr_log(WLR_DEBUG, "wlr_resource_buffer_interface %s has already"
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"been registered", iface->name);
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return;
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}
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}
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iface_ptr = wl_array_add(&buffer_resource_interfaces, sizeof(iface));
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*iface_ptr = iface;
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}
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static const struct wlr_buffer_resource_interface *get_buffer_resource_iface(
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struct wl_resource *resource) {
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struct wlr_buffer_resource_interface **iface_ptr;
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wl_array_for_each(iface_ptr, &buffer_resource_interfaces) {
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if ((*iface_ptr)->is_instance(resource)) {
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return *iface_ptr;
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}
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}
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return NULL;
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}
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struct wlr_buffer *wlr_buffer_from_resource(struct wl_resource *resource) {
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assert(resource && wlr_resource_is_buffer(resource));
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struct wlr_buffer *buffer;
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if (wlr_dmabuf_v1_resource_is_buffer(resource)) {
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struct wlr_dmabuf_v1_buffer *dmabuf =
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wlr_dmabuf_v1_buffer_from_buffer_resource(resource);
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buffer = wlr_buffer_lock(&dmabuf->base);
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} else if (wlr_drm_buffer_is_resource(resource)) {
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struct wlr_drm_buffer *drm_buffer =
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wlr_drm_buffer_from_resource(resource);
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buffer = wlr_buffer_lock(&drm_buffer->base);
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} else {
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const struct wlr_buffer_resource_interface *iface =
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get_buffer_resource_iface(resource);
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if (!iface) {
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wlr_log(WLR_ERROR, "Unknown buffer type");
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return NULL;
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}
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struct wlr_buffer *custom_buffer = iface->from_resource(resource);
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if (!custom_buffer) {
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wlr_log(WLR_ERROR, "Failed to create %s buffer", iface->name);
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return NULL;
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}
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buffer = wlr_buffer_lock(custom_buffer);
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}
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return buffer;
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}
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