// SPDX-License-Identifier: MIT

/*

* Window Surface

*

* - provides an object that can be composited by flutter-pi

* - (by calling present_kms or present_fbdev on it)

* - == basically the thing that stores the graphics of a FlutterLayer

* - render surfaces are special kinds of scanout surfaces that flutter can render into

* - every scanout surface can be registered as a platform view to display it

*

* Copyright (c) 2022, Hannes Winkler <hanneswinkler2000@web.de>

*/

#include "surface.h"

#include <stddef.h>

#include <stdlib.h>

#include "compositor_ng.h"

#include "surface_private.h"

#include "tracer.h"

#include "util/collection.h"

void surface_deinit(struct surface *s);

#ifdef DEBUG

static const uuid_t uuid = CONST_UUID(0xce, 0x35, 0x87, 0x0c, 0x82, 0x08, 0x46, 0x09, 0xbd, 0xab, 0x80, 0x67, 0x28, 0x15, 0x45, 0xb5);

ATTR_PURE struct surface *__checked_cast_surface(void *ptr) {

struct surface *s;

s = CAST_SURFACE_UNCHECKED(ptr);

assert(uuid_equals(s->uuid, uuid));

return s;

}

#endif

int surface_init(struct surface *s, struct tracer *tracer) {

#ifdef DEBUG

uuid_copy(&s->uuid, uuid);

#endif

s->n_refs = REFCOUNT_INIT_1;

pthread_mutex_init(&s->lock, NULL);

s->tracer = tracer_ref(tracer);

s->revision = 1;

s->present_kms = NULL;

s->present_fbdev = NULL;

s->deinit = surface_deinit;

return 0;

}

void surface_deinit(struct surface *s) {

pthread_mutex_destroy(&s->lock);

tracer_unref(s->tracer);

}

struct surface *surface_new(struct tracer *tracer) {

struct surface *s;

int ok;

s = malloc(sizeof *s);

if (s == NULL) {

return NULL;

}

ok = surface_init(s, tracer);

if (ok != 0) {

free(s);

return NULL;

}

return s;

}

void surface_destroy(struct surface *s) {

ASSERT_NOT_NULL(s->deinit);

s->deinit(s);

free(s);

}

DEFINE_LOCK_OPS(surface, lock)

DEFINE_REF_OPS(surface, n_refs)

int64_t surface_get_revision(struct surface *s) {

ASSERT_NOT_NULL(s);

return s->revision;

}

int surface_present_kms(struct surface *s, const struct fl_layer_props *props, struct kms_req_builder *builder) {

int ok;

ASSERT_NOT_NULL(s);

ASSERT_NOT_NULL(props);

ASSERT_NOT_NULL(builder);

ASSERT_NOT_NULL(s->present_kms);

TRACER_BEGIN(s->tracer, "surface_present_kms");

ok = s->present_kms(s, props, builder);

TRACER_END(s->tracer, "surface_present_kms");

return ok;

}

int surface_present_fbdev(struct surface *s, const struct fl_layer_props *props, struct fbdev_commit_builder *builder) {

int ok;

ASSERT_NOT_NULL(s);

ASSERT_NOT_NULL(props);

ASSERT_NOT_NULL(builder);

ASSERT_NOT_NULL(s->present_fbdev);

TRACER_BEGIN(s->tracer, "surface_present_fbdev");

ok = s->present_fbdev(s, props, builder);

TRACER_END(s->tracer, "surface_present_fbdev");

return ok;

}