| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // 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 "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. |
| wl_resource* const 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 |