| Ady Abraham | 6cdd3fd | 2023-09-07 18:45:58 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2023 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <gui/Flags.h> |
| 18 | #include <gui/FrameRateUtils.h> |
| 19 | #include <system/window.h> |
| 20 | #include <utils/Log.h> |
| 21 | |
| 22 | #include <cmath> |
| 23 | |
| 24 | namespace android { |
| 25 | // Returns true if the frameRate is valid. |
| 26 | // |
| 27 | // @param frameRate the frame rate in Hz |
| 28 | // @param compatibility a ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_* |
| 29 | // @param changeFrameRateStrategy a ANATIVEWINDOW_CHANGE_FRAME_RATE_* |
| 30 | // @param functionName calling function or nullptr. Used for logging |
| 31 | // @param privileged whether caller has unscoped surfaceflinger access |
| 32 | bool ValidateFrameRate(float frameRate, int8_t compatibility, int8_t changeFrameRateStrategy, |
| 33 | const char* inFunctionName, bool privileged) { |
| 34 | const char* functionName = inFunctionName != nullptr ? inFunctionName : "call"; |
| 35 | int floatClassification = std::fpclassify(frameRate); |
| 36 | if (frameRate < 0 || floatClassification == FP_INFINITE || floatClassification == FP_NAN) { |
| 37 | ALOGE("%s failed - invalid frame rate %f", functionName, frameRate); |
| 38 | return false; |
| 39 | } |
| 40 | |
| 41 | if (compatibility != ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_DEFAULT && |
| 42 | compatibility != ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_FIXED_SOURCE && |
| 43 | (!privileged || |
| 44 | (compatibility != ANATIVEWINDOW_FRAME_RATE_EXACT && |
| 45 | compatibility != ANATIVEWINDOW_FRAME_RATE_NO_VOTE))) { |
| 46 | ALOGE("%s failed - invalid compatibility value %d privileged: %s", functionName, |
| 47 | compatibility, privileged ? "yes" : "no"); |
| 48 | return false; |
| 49 | } |
| 50 | |
| 51 | if (__builtin_available(android 31, *)) { |
| 52 | if (changeFrameRateStrategy != ANATIVEWINDOW_CHANGE_FRAME_RATE_ONLY_IF_SEAMLESS && |
| 53 | changeFrameRateStrategy != ANATIVEWINDOW_CHANGE_FRAME_RATE_ALWAYS) { |
| 54 | ALOGE("%s failed - invalid change frame rate strategy value %d", functionName, |
| 55 | changeFrameRateStrategy); |
| 56 | if (FLAG_BQ_SET_FRAME_RATE) { |
| 57 | return false; |
| 58 | } |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | return true; |
| 63 | } |
| 64 | |
| 65 | } // namespace android |