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