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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/exo/wayland/zcr_vsync_feedback.h"
#include <vsync-feedback-unstable-v1-server-protocol.h>
#include "base/memory/raw_ptr.h"
#include "components/exo/vsync_timing_manager.h"
#include "components/exo/wayland/server_util.h"
namespace exo {
namespace wayland {
namespace {
////////////////////////////////////////////////////////////////////////////////
// vsync_timing_interface:
// Implements VSync timing interface by monitoring updates to VSync parameters.
class VSyncTiming final : public VSyncTimingManager::Observer {
public:
explicit VSyncTiming(wl_resource* timing_resource)
: timing_resource_(timing_resource) {
WMHelper::GetInstance()->GetVSyncTimingManager().AddObserver(this);
}
VSyncTiming(const VSyncTiming&) = delete;
VSyncTiming& operator=(const VSyncTiming&) = delete;
~VSyncTiming() override {
WMHelper::GetInstance()->GetVSyncTimingManager().RemoveObserver(this);
}
// Overridden from VSyncTimingManager::Observer:
void OnUpdateVSyncParameters(base::TimeTicks timebase,
base::TimeDelta interval) override {
uint64_t timebase_us = timebase.since_origin().InMicroseconds();
uint64_t interval_us = interval.InMicroseconds();
zcr_vsync_timing_v1_send_update(timing_resource_, timebase_us & 0xffffffff,
timebase_us >> 32, interval_us & 0xffffffff,
interval_us >> 32);
wl_client_flush(wl_resource_get_client(timing_resource_));
}
private:
// The VSync timing resource.
const raw_ptr<wl_resource, ExperimentalAsh> timing_resource_;
};
void vsync_timing_destroy(wl_client* client, wl_resource* resource) {
wl_resource_destroy(resource);
}
const struct zcr_vsync_timing_v1_interface vsync_timing_implementation = {
vsync_timing_destroy};
////////////////////////////////////////////////////////////////////////////////
// vsync_feedback_interface:
void vsync_feedback_destroy(wl_client* client, wl_resource* resource) {
wl_resource_destroy(resource);
}
void vsync_feedback_get_vsync_timing(wl_client* client,
wl_resource* resource,
uint32_t id,
wl_resource* output) {
wl_resource* timing_resource =
wl_resource_create(client, &zcr_vsync_timing_v1_interface, 1, id);
SetImplementation(timing_resource, &vsync_timing_implementation,
std::make_unique<VSyncTiming>(timing_resource));
}
const struct zcr_vsync_feedback_v1_interface vsync_feedback_implementation = {
vsync_feedback_destroy, vsync_feedback_get_vsync_timing};
} // namespace
void bind_vsync_feedback(wl_client* client,
void* data,
uint32_t version,
uint32_t id) {
wl_resource* resource =
wl_resource_create(client, &zcr_vsync_feedback_v1_interface, 1, id);
wl_resource_set_implementation(resource, &vsync_feedback_implementation,
nullptr, nullptr);
}
} // namespace wayland
} // namespace exo
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