1 /* 2 * Copyright (c) 2011-2012, The Linux Foundation. All rights reserved. 3 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 13 * * Neither the name of The Linux Foundation nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef INCLUDE_PROFILER 31 #define INCLUDE_PROFILER 32 33 #include <stdio.h> 34 35 #include <cutils/properties.h> 36 #include <log/log.h> 37 #include <utils/Singleton.h> 38 39 #ifndef DEBUG_CALC_FPS 40 #define CALC_FPS() ((void)0) 41 #define CALC_INIT() ((void)0) 42 #else 43 #define CALC_FPS() qdutils::CalcFps::getInstance().Fps() 44 #define CALC_INIT() qdutils::CalcFps::getInstance().Init() 45 using namespace android; 46 namespace qdutils { 47 class CalcFps : public Singleton<CalcFps> { 48 public: 49 CalcFps(); 50 ~CalcFps(); 51 52 void Init(); 53 void Fps(); 54 55 private: 56 static const unsigned int MAX_FPS_CALC_PERIOD_IN_FRAMES = 128; 57 static const unsigned int MAX_FRAMEARRIVAL_STEPS = 50; 58 static const unsigned int MAX_DEBUG_FPS_LEVEL = 2; 59 60 struct debug_fps_metadata_t { 61 /*fps calculation based on time or number of frames*/ 62 enum DfmType { 63 DFM_FRAMES = 0, 64 DFM_TIME = 1, 65 }; 66 67 DfmType type; 68 69 /* indicates how much time do we wait till we calculate FPS */ 70 unsigned long time_period; 71 72 /*indicates how much time elapsed since we report fps*/ 73 float time_elapsed; 74 75 /* indicates how many frames do we wait till we calculate FPS */ 76 unsigned int period; 77 /* current frame, will go upto period, and then reset */ 78 unsigned int curr_frame; 79 /* frame will arrive at a multiple of 16666 us at the display. 80 This indicates how many steps to consider for our calculations. 81 For example, if framearrival_steps = 10, then the frame that arrived 82 after 166660 us or more will be ignored. 83 */ 84 unsigned int framearrival_steps; 85 /* ignorethresh_us = framearrival_steps * 16666 */ 86 nsecs_t ignorethresh_us; 87 /* used to calculate the actual frame arrival step, the times might not be 88 accurate 89 */ 90 unsigned int margin_us; 91 92 /* actual data storage */ 93 nsecs_t framearrivals[MAX_FPS_CALC_PERIOD_IN_FRAMES]; 94 nsecs_t accum_framearrivals[MAX_FRAMEARRIVAL_STEPS]; 95 }; 96 97 private: 98 void populate_debug_fps_metadata(void); 99 void print_fps(float fps); 100 void calc_fps(nsecs_t currtime_us); 101 102 private: 103 debug_fps_metadata_t debug_fps_metadata; 104 unsigned int debug_fps_level; 105 }; 106 };//namespace qdutils 107 #endif 108 109 #endif // INCLUDE_PROFILER 110