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 <inttypes.h>
32
33#include "profiler.h"
34
35#ifdef DEBUG_CALC_FPS
36
37
38ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::CalcFps) ;
39
40namespace qdutils {
41
42CalcFps::CalcFps() {
43    debug_fps_level = 0;
44    Init();
45}
46
47CalcFps::~CalcFps() {
48}
49
50void CalcFps::Init() {
51    char prop[PROPERTY_VALUE_MAX];
52    property_get("debug.gr.calcfps", prop, "0");
53    debug_fps_level = atoi(prop);
54    if (debug_fps_level > MAX_DEBUG_FPS_LEVEL) {
55        ALOGW("out of range value for debug.gr.calcfps, using 0");
56        debug_fps_level = 0;
57    }
58
59    ALOGD("DEBUG_CALC_FPS: %d", debug_fps_level);
60    populate_debug_fps_metadata();
61}
62
63void CalcFps::Fps() {
64    if (debug_fps_level > 0)
65        calc_fps(ns2us(systemTime()));
66}
67
68void CalcFps::populate_debug_fps_metadata(void)
69{
70    char prop[PROPERTY_VALUE_MAX];
71
72    /*defaults calculation of fps to based on number of frames*/
73    property_get("debug.gr.calcfps.type", prop, "0");
74    debug_fps_metadata.type = (debug_fps_metadata_t::DfmType) atoi(prop);
75
76    /*defaults to 1000ms*/
77    property_get("debug.gr.calcfps.timeperiod", prop, "1000");
78    debug_fps_metadata.time_period = atoi(prop);
79
80    property_get("debug.gr.calcfps.period", prop, "10");
81    debug_fps_metadata.period = atoi(prop);
82
83    if (debug_fps_metadata.period > MAX_FPS_CALC_PERIOD_IN_FRAMES) {
84        debug_fps_metadata.period = MAX_FPS_CALC_PERIOD_IN_FRAMES;
85    }
86
87    /* default ignorethresh_us: 500 milli seconds */
88    property_get("debug.gr.calcfps.ignorethresh_us", prop, "500000");
89    debug_fps_metadata.ignorethresh_us = atoi(prop);
90
91    debug_fps_metadata.framearrival_steps =
92        (unsigned int)(debug_fps_metadata.ignorethresh_us / 16666);
93
94    if (debug_fps_metadata.framearrival_steps > MAX_FRAMEARRIVAL_STEPS) {
95        debug_fps_metadata.framearrival_steps = MAX_FRAMEARRIVAL_STEPS;
96        debug_fps_metadata.ignorethresh_us =
97            debug_fps_metadata.framearrival_steps * 16666;
98    }
99
100    /* 2ms margin of error for the gettimeofday */
101    debug_fps_metadata.margin_us = 2000;
102
103    for (unsigned int i = 0; i < MAX_FRAMEARRIVAL_STEPS; i++)
104        debug_fps_metadata.accum_framearrivals[i] = 0;
105
106    debug_fps_metadata.curr_frame = 0;
107
108    ALOGD("period: %u", debug_fps_metadata.period);
109    ALOGD("ignorethresh_us: %" PRId64, debug_fps_metadata.ignorethresh_us);
110}
111
112void CalcFps::print_fps(float fps)
113{
114    if (debug_fps_metadata_t::DFM_FRAMES == debug_fps_metadata.type)
115        ALOGD("FPS for last %d frames: %3.2f", debug_fps_metadata.period, fps);
116    else
117        ALOGD("FPS for last (%f ms, %d frames): %3.2f",
118              debug_fps_metadata.time_elapsed,
119              debug_fps_metadata.curr_frame, fps);
120
121    debug_fps_metadata.curr_frame = 0;
122    debug_fps_metadata.time_elapsed = 0.0;
123
124    if (debug_fps_level > 1) {
125        ALOGD("Frame Arrival Distribution:");
126        for (unsigned int i = 0;
127             i < ((debug_fps_metadata.framearrival_steps / 6) + 1);
128             i++) {
129            ALOGD("%" PRId64 " %" PRId64 " %" PRId64 " %" PRId64 " %" PRId64 " %" PRId64,
130                  debug_fps_metadata.accum_framearrivals[i*6],
131                  debug_fps_metadata.accum_framearrivals[i*6+1],
132                  debug_fps_metadata.accum_framearrivals[i*6+2],
133                  debug_fps_metadata.accum_framearrivals[i*6+3],
134                  debug_fps_metadata.accum_framearrivals[i*6+4],
135                  debug_fps_metadata.accum_framearrivals[i*6+5]);
136        }
137
138        /* We are done with displaying, now clear the stats */
139        for (unsigned int i = 0;
140             i < debug_fps_metadata.framearrival_steps;
141             i++)
142            debug_fps_metadata.accum_framearrivals[i] = 0;
143    }
144    return;
145}
146
147void CalcFps::calc_fps(nsecs_t currtime_us)
148{
149    static nsecs_t oldtime_us = 0;
150
151    nsecs_t diff = currtime_us - oldtime_us;
152
153    oldtime_us = currtime_us;
154
155    if (debug_fps_metadata_t::DFM_FRAMES == debug_fps_metadata.type &&
156        diff > debug_fps_metadata.ignorethresh_us) {
157        return;
158    }
159
160    if (debug_fps_metadata.curr_frame < MAX_FPS_CALC_PERIOD_IN_FRAMES) {
161        debug_fps_metadata.framearrivals[debug_fps_metadata.curr_frame] = diff;
162    }
163
164    debug_fps_metadata.curr_frame++;
165
166    if (debug_fps_level > 1) {
167        unsigned int currstep =
168            (unsigned int)(diff + debug_fps_metadata.margin_us) / 16666;
169
170        if (currstep < debug_fps_metadata.framearrival_steps) {
171            debug_fps_metadata.accum_framearrivals[currstep-1]++;
172        }
173    }
174
175    if (debug_fps_metadata_t::DFM_FRAMES == debug_fps_metadata.type) {
176        if (debug_fps_metadata.curr_frame == debug_fps_metadata.period) {
177            /* time to calculate and display FPS */
178            nsecs_t sum = 0;
179            for (unsigned int i = 0; i < debug_fps_metadata.period; i++)
180                sum += debug_fps_metadata.framearrivals[i];
181            print_fps(float(float(debug_fps_metadata.period * 1000000) /
182                                                              (float)sum));
183        }
184    }
185    else if (debug_fps_metadata_t::DFM_TIME == debug_fps_metadata.type) {
186        debug_fps_metadata.time_elapsed += (float)((float)diff/1000.0);
187        if (debug_fps_metadata.time_elapsed >= debug_fps_metadata.time_period) {
188            float fps = float(1000.0 * debug_fps_metadata.curr_frame/
189                                            debug_fps_metadata.time_elapsed);
190            print_fps(fps);
191        }
192    }
193    return;
194}
195};//namespace qomutils
196#endif
197