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/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "PhaseOffsets.h"
#include <cutils/properties.h>
#include "SurfaceFlingerProperties.h"
namespace android {
using namespace android::sysprop;
namespace scheduler {
using RefreshRateType = RefreshRateConfigs::RefreshRateType;
PhaseOffsets::~PhaseOffsets() = default;
namespace impl {
PhaseOffsets::PhaseOffsets() {
int64_t vsyncPhaseOffsetNs = vsync_event_phase_offset_ns(1000000);
int64_t sfVsyncPhaseOffsetNs = vsync_sf_event_phase_offset_ns(1000000);
char value[PROPERTY_VALUE_MAX];
property_get("debug.sf.early_phase_offset_ns", value, "-1");
const int earlySfOffsetNs = atoi(value);
property_get("debug.sf.early_gl_phase_offset_ns", value, "-1");
const int earlyGlSfOffsetNs = atoi(value);
property_get("debug.sf.early_app_phase_offset_ns", value, "-1");
const int earlyAppOffsetNs = atoi(value);
property_get("debug.sf.early_gl_app_phase_offset_ns", value, "-1");
const int earlyGlAppOffsetNs = atoi(value);
property_get("debug.sf.high_fps_early_phase_offset_ns", value, "-1");
const int highFpsEarlySfOffsetNs = atoi(value);
property_get("debug.sf.high_fps_early_gl_phase_offset_ns", value, "-1");
const int highFpsEarlyGlSfOffsetNs = atoi(value);
property_get("debug.sf.high_fps_early_app_phase_offset_ns", value, "-1");
const int highFpsEarlyAppOffsetNs = atoi(value);
property_get("debug.sf.high_fps_early_gl_app_phase_offset_ns", value, "-1");
const int highFpsEarlyGlAppOffsetNs = atoi(value);
// TODO(b/122905996): Define these in device.mk.
property_get("debug.sf.high_fps_late_app_phase_offset_ns", value, "2000000");
const int highFpsLateAppOffsetNs = atoi(value);
property_get("debug.sf.high_fps_late_sf_phase_offset_ns", value, "1000000");
const int highFpsLateSfOffsetNs = atoi(value);
// Below defines the threshold when an offset is considered to be negative, i.e. targeting
// for the N+2 vsync instead of N+1. This means that:
// For offset < threshold, SF wake up (vsync_duration - offset) before HW vsync.
// For offset >= threshold, SF wake up (2 * vsync_duration - offset) before HW vsync.
property_get("debug.sf.phase_offset_threshold_for_next_vsync_ns", value, "-1");
const int phaseOffsetThresholdForNextVsyncNs = atoi(value);
Offsets defaultOffsets;
Offsets highFpsOffsets;
defaultOffsets.early = {RefreshRateType::DEFAULT,
earlySfOffsetNs != -1 ? earlySfOffsetNs : sfVsyncPhaseOffsetNs,
earlyAppOffsetNs != -1 ? earlyAppOffsetNs : vsyncPhaseOffsetNs};
defaultOffsets.earlyGl = {RefreshRateType::DEFAULT,
earlyGlSfOffsetNs != -1 ? earlyGlSfOffsetNs : sfVsyncPhaseOffsetNs,
earlyGlAppOffsetNs != -1 ? earlyGlAppOffsetNs : vsyncPhaseOffsetNs};
defaultOffsets.late = {RefreshRateType::DEFAULT, sfVsyncPhaseOffsetNs, vsyncPhaseOffsetNs};
highFpsOffsets.early = {RefreshRateType::PERFORMANCE,
highFpsEarlySfOffsetNs != -1 ? highFpsEarlySfOffsetNs
: highFpsLateSfOffsetNs,
highFpsEarlyAppOffsetNs != -1 ? highFpsEarlyAppOffsetNs
: highFpsLateAppOffsetNs};
highFpsOffsets.earlyGl = {RefreshRateType::PERFORMANCE,
highFpsEarlyGlSfOffsetNs != -1 ? highFpsEarlyGlSfOffsetNs
: highFpsLateSfOffsetNs,
highFpsEarlyGlAppOffsetNs != -1 ? highFpsEarlyGlAppOffsetNs
: highFpsLateAppOffsetNs};
highFpsOffsets.late = {RefreshRateType::PERFORMANCE, highFpsLateSfOffsetNs,
highFpsLateAppOffsetNs};
mOffsets.insert({RefreshRateType::POWER_SAVING, defaultOffsets});
mOffsets.insert({RefreshRateType::DEFAULT, defaultOffsets});
mOffsets.insert({RefreshRateType::PERFORMANCE, highFpsOffsets});
mOffsetThresholdForNextVsync = phaseOffsetThresholdForNextVsyncNs != -1
? phaseOffsetThresholdForNextVsyncNs
: std::numeric_limits<nsecs_t>::max();
}
PhaseOffsets::Offsets PhaseOffsets::getOffsetsForRefreshRate(
android::scheduler::RefreshRateConfigs::RefreshRateType refreshRateType) const {
return mOffsets.at(refreshRateType);
}
void PhaseOffsets::dump(std::string& result) const {
const auto [early, earlyGl, late] = getCurrentOffsets();
base::StringAppendF(&result,
" app phase: %9" PRId64 " ns\t SF phase: %9" PRId64 " ns\n"
" early app phase: %9" PRId64 " ns\t early SF phase: %9" PRId64 " ns\n"
"GL early app phase: %9" PRId64 " ns\tGL early SF phase: %9" PRId64 " ns\n",
late.app, late.sf, early.app, early.sf, earlyGl.app, earlyGl.sf);
}
nsecs_t PhaseOffsets::getCurrentAppOffset() {
return getCurrentOffsets().late.app;
}
nsecs_t PhaseOffsets::getCurrentSfOffset() {
return getCurrentOffsets().late.sf;
}
} // namespace impl
} // namespace scheduler
} // namespace android
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