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/*
* Copyright 2023 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 <gui/FrameRateUtils.h>
#include <system/window.h>
#include <utils/Log.h>
#include <cmath>
#include <com_android_graphics_libgui_flags.h>
namespace android {
using namespace com::android::graphics::libgui;
// Returns true if the frameRate is valid.
//
// @param frameRate the frame rate in Hz
// @param compatibility a ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_*
// @param changeFrameRateStrategy a ANATIVEWINDOW_CHANGE_FRAME_RATE_*
// @param functionName calling function or nullptr. Used for logging
// @param privileged whether caller has unscoped surfaceflinger access
bool ValidateFrameRate(float frameRate, int8_t compatibility, int8_t changeFrameRateStrategy,
const char* inFunctionName, bool privileged) {
const char* functionName = inFunctionName != nullptr ? inFunctionName : "call";
int floatClassification = std::fpclassify(frameRate);
if (frameRate < 0 || floatClassification == FP_INFINITE || floatClassification == FP_NAN) {
ALOGE("%s failed - invalid frame rate %f", functionName, frameRate);
return false;
}
if (compatibility != ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_DEFAULT &&
compatibility != ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_FIXED_SOURCE &&
compatibility != ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_AT_LEAST &&
(!privileged ||
(compatibility != ANATIVEWINDOW_FRAME_RATE_EXACT &&
compatibility != ANATIVEWINDOW_FRAME_RATE_NO_VOTE))) {
ALOGE("%s failed - invalid compatibility value %d privileged: %s", functionName,
compatibility, privileged ? "yes" : "no");
return false;
}
if (__builtin_available(android 31, *)) {
if (changeFrameRateStrategy != ANATIVEWINDOW_CHANGE_FRAME_RATE_ONLY_IF_SEAMLESS &&
changeFrameRateStrategy != ANATIVEWINDOW_CHANGE_FRAME_RATE_ALWAYS) {
ALOGE("%s failed - invalid change frame rate strategy value %d", functionName,
changeFrameRateStrategy);
if (flags::bq_setframerate()) {
return false;
}
}
}
return true;
}
} // namespace android
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