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 #define LOG_NDDEBUG 0
31 #include "profiler.h"
32 
33 #ifdef DEBUG_CALC_FPS
34 
35 namespace android {
36 ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::CalcFps) ;
37 }
38 
39 namespace qdutils {
40 
CalcFps()41 CalcFps::CalcFps() {
42     debug_fps_level = 0;
43     Init();
44 }
45 
~CalcFps()46 CalcFps::~CalcFps() {
47 }
48 
Init()49 void CalcFps::Init() {
50     char prop[PROPERTY_VALUE_MAX];
51     property_get("debug.gr.calcfps", prop, "0");
52     debug_fps_level = atoi(prop);
53     if (debug_fps_level > MAX_DEBUG_FPS_LEVEL) {
54         ALOGW("out of range value for debug.gr.calcfps, using 0");
55         debug_fps_level = 0;
56     }
57 
58     ALOGD("DEBUG_CALC_FPS: %d", debug_fps_level);
59     populate_debug_fps_metadata();
60 }
61 
Fps()62 void CalcFps::Fps() {
63     if (debug_fps_level > 0)
64         calc_fps(ns2us(systemTime()));
65 }
66 
populate_debug_fps_metadata(void)67 void CalcFps::populate_debug_fps_metadata(void)
68 {
69     char prop[PROPERTY_VALUE_MAX];
70 
71     /*defaults calculation of fps to based on number of frames*/
72     property_get("debug.gr.calcfps.type", prop, "0");
73     debug_fps_metadata.type = (debug_fps_metadata_t::DfmType) atoi(prop);
74 
75     /*defaults to 1000ms*/
76     property_get("debug.gr.calcfps.timeperiod", prop, "1000");
77     debug_fps_metadata.time_period = atoi(prop);
78 
79     property_get("debug.gr.calcfps.period", prop, "10");
80     debug_fps_metadata.period = atoi(prop);
81 
82     if (debug_fps_metadata.period > MAX_FPS_CALC_PERIOD_IN_FRAMES) {
83         debug_fps_metadata.period = MAX_FPS_CALC_PERIOD_IN_FRAMES;
84     }
85 
86     /* default ignorethresh_us: 500 milli seconds */
87     property_get("debug.gr.calcfps.ignorethresh_us", prop, "500000");
88     debug_fps_metadata.ignorethresh_us = atoi(prop);
89 
90     debug_fps_metadata.framearrival_steps =
91         (debug_fps_metadata.ignorethresh_us / 16666);
92 
93     if (debug_fps_metadata.framearrival_steps > MAX_FRAMEARRIVAL_STEPS) {
94         debug_fps_metadata.framearrival_steps = MAX_FRAMEARRIVAL_STEPS;
95         debug_fps_metadata.ignorethresh_us =
96             debug_fps_metadata.framearrival_steps * 16666;
97     }
98 
99     /* 2ms margin of error for the gettimeofday */
100     debug_fps_metadata.margin_us = 2000;
101 
102     for (unsigned int i = 0; i < MAX_FRAMEARRIVAL_STEPS; i++)
103         debug_fps_metadata.accum_framearrivals[i] = 0;
104 
105     ALOGD("period: %d", debug_fps_metadata.period);
106     ALOGD("ignorethresh_us: %lld", debug_fps_metadata.ignorethresh_us);
107 }
108 
print_fps(float fps)109 void CalcFps::print_fps(float fps)
110 {
111     if (debug_fps_metadata_t::DFM_FRAMES == debug_fps_metadata.type)
112         ALOGD("FPS for last %d frames: %3.2f", debug_fps_metadata.period, fps);
113     else
114         ALOGD("FPS for last (%f ms, %d frames): %3.2f",
115               debug_fps_metadata.time_elapsed,
116               debug_fps_metadata.curr_frame, fps);
117 
118     debug_fps_metadata.curr_frame = 0;
119     debug_fps_metadata.time_elapsed = 0.0;
120 
121     if (debug_fps_level > 1) {
122         ALOGD("Frame Arrival Distribution:");
123         for (unsigned int i = 0;
124              i < ((debug_fps_metadata.framearrival_steps / 6) + 1);
125              i++) {
126             ALOGD("%lld %lld %lld %lld %lld %lld",
127                   debug_fps_metadata.accum_framearrivals[i*6],
128                   debug_fps_metadata.accum_framearrivals[i*6+1],
129                   debug_fps_metadata.accum_framearrivals[i*6+2],
130                   debug_fps_metadata.accum_framearrivals[i*6+3],
131                   debug_fps_metadata.accum_framearrivals[i*6+4],
132                   debug_fps_metadata.accum_framearrivals[i*6+5]);
133         }
134 
135         /* We are done with displaying, now clear the stats */
136         for (unsigned int i = 0;
137              i < debug_fps_metadata.framearrival_steps;
138              i++)
139             debug_fps_metadata.accum_framearrivals[i] = 0;
140     }
141     return;
142 }
143 
calc_fps(nsecs_t currtime_us)144 void CalcFps::calc_fps(nsecs_t currtime_us)
145 {
146     static nsecs_t oldtime_us = 0;
147 
148     nsecs_t diff = currtime_us - oldtime_us;
149 
150     oldtime_us = currtime_us;
151 
152     if (debug_fps_metadata_t::DFM_FRAMES == debug_fps_metadata.type &&
153         diff > debug_fps_metadata.ignorethresh_us) {
154         return;
155     }
156 
157     if (debug_fps_metadata.curr_frame < MAX_FPS_CALC_PERIOD_IN_FRAMES) {
158         debug_fps_metadata.framearrivals[debug_fps_metadata.curr_frame] = diff;
159     }
160 
161     debug_fps_metadata.curr_frame++;
162 
163     if (debug_fps_level > 1) {
164         unsigned int currstep = (diff + debug_fps_metadata.margin_us) / 16666;
165 
166         if (currstep < debug_fps_metadata.framearrival_steps) {
167             debug_fps_metadata.accum_framearrivals[currstep-1]++;
168         }
169     }
170 
171     if (debug_fps_metadata_t::DFM_FRAMES == debug_fps_metadata.type) {
172         if (debug_fps_metadata.curr_frame == debug_fps_metadata.period) {
173             /* time to calculate and display FPS */
174             nsecs_t sum = 0;
175             for (unsigned int i = 0; i < debug_fps_metadata.period; i++)
176                 sum += debug_fps_metadata.framearrivals[i];
177             print_fps((debug_fps_metadata.period * float(1000000))/float(sum));
178         }
179     }
180     else if (debug_fps_metadata_t::DFM_TIME == debug_fps_metadata.type) {
181         debug_fps_metadata.time_elapsed += ((float)diff/1000.0);
182         if (debug_fps_metadata.time_elapsed >= debug_fps_metadata.time_period) {
183             float fps = (1000.0 * debug_fps_metadata.curr_frame)/
184                 (float)debug_fps_metadata.time_elapsed;
185             print_fps(fps);
186         }
187     }
188     return;
189 }
190 };//namespace qomutils
191 #endif
192