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path: root/tvapi/libtv/tv/AutoBackLight.cpp (plain)
blob: 98bf02dcee31e6546421055f569beafc281e9ee1
1#include "AutoBackLight.h"
2#include "../tvsetting/CTvSetting.h"
3#include "../tvconfig/tvconfig.h"
4#include "../tvutils/tvutils.h"
5#include <stdio.h>
6#include <unistd.h>
7#include <sys/types.h>
8#include <sys/stat.h>
9#include <sys/ioctl.h>
10#include <fcntl.h>
11#include <string.h>
12#include <errno.h>
13#include <dlfcn.h>
14#include <linux/fb.h>
15#include <stdlib.h>
16#include <cutils/properties.h>
17
18#ifdef LOG_TAG
19#undef LOG_TAG
20#define LOG_TAG "AutoBackLight"
21#endif
22
23AutoBackLight::AutoBackLight( CVpp *mVpp, CTvin *pTvin )
24{
25 mAutoBacklightSource = SOURCE_TYPE_TV;
26 myVpp = mVpp;
27 myTvin = pTvin;
28 mCur_source_default_backlight = 100;
29 mCur_sig_state == SIG_STATE_NOSIG;
30 mAutoBacklight_OnOff_Flag = false;
31 mCurrent_backlight = 100;
32 mCur_dest_backlight = 100;
33}
34
35AutoBackLight::~AutoBackLight()
36{
37 mAutoBacklight_OnOff_Flag = false;
38}
39
40bool AutoBackLight::isAutoBacklightOn()
41{
42 return mAutoBacklight_OnOff_Flag;
43}
44
45void AutoBackLight::updateSigState(int state)
46{
47 mCur_sig_state = state;
48 LOGD("updateSigState = %d", mCur_sig_state);
49}
50
51void AutoBackLight::startAutoBacklight( tv_source_input_type_t source_type )
52{
53 mAutoBacklightSource = source_type;
54 mCur_source_default_backlight = myVpp->GetBacklight(source_type);
55 mCurrent_backlight = mCur_source_default_backlight;
56 myVpp->SetBacklight(mCur_source_default_backlight, source_type, 1);
57
58 /*
59 mDefault_auto_bl_value = def_source_bl_value;
60 dynamicGamma = mDefault_auto_bl_value * mCur_source_default_backlight / 100;
61 // this if should not happen
62 if (dynamicGamma > mCur_source_default_backlight) {
63 dynamicGamma = mCur_source_default_backlight;
64 }
65 */
66
67 if (!mAutoBacklight_OnOff_Flag) {
68 mAutoBacklight_OnOff_Flag = true;
69 this->run();
70 }
71}
72
73void AutoBackLight::stopAutoBacklight()
74{
75 if (mAutoBacklight_OnOff_Flag) {
76 mAutoBacklight_OnOff_Flag = false;
77 myVpp->SetBacklight(mCur_source_default_backlight, mAutoBacklightSource, 1);
78 }
79}
80
81/**
82 * @ description: tpv project
83 * @ return:value
84 * value <= 20: mCur_dest_backlight is 14
85 * 20 < value <= 160: mCur_dest_backlight is 57
86 *160 < value: mCur_dest_backlight is 100
87 */
88void AutoBackLight::adjustDstBacklight()
89{
90 if (mCur_sig_state == SIG_STATE_STABLE) {
91 //the node is used to adjust current ts is static or dynamtic frame
92 char temp_str = 0;
93 int fd = open("/sys/module/di/parameters/frame_dynamic", O_RDWR);
94 if (fd <= 0) {
95 LOGE("open /sys/module/di/parameters/frame_dynamic ERROR!!\n");
96 return;
97 }
98
99 if (read(fd, &temp_str, 1) > 0) {
100
101 if (temp_str == 'N') {
102 mCur_dest_backlight = mCur_source_default_backlight;
103 } else if (temp_str == 'Y') {
104 int pwm = HistogramGet_AVE();
105 if (pwm <= 20) {
106 mCur_dest_backlight = 14;
107 } else if (pwm > 20 && pwm <= 160) {
108 mCur_dest_backlight = 57;
109 } else {
110 mCur_dest_backlight = 100;
111 }
112 //LOGD("pwm = %d, mCur_dest_backlight = %d", pwm, mCur_dest_backlight);
113 }
114 }
115 close(fd);
116 } else {
117 mCurrent_backlight = mCur_dest_backlight = mCur_source_default_backlight;
118 myVpp->SetBacklight(mCurrent_backlight, mAutoBacklightSource, 0);
119 }
120
121 /*
122 if (pwm > 0)
123 pwm_max = pwm;
124 else
125 pwm_min = pwm;
126 pwm = 255 - pwm;
127 int average = (pwm_min + pwm_max) / 2;
128 dynamicGammaOffset = (pwm - average) / 10;
129 dynamicGammaOffset = dynamicGammaOffset * mDefault_auto_bl_value / 100;
130
131 //the node is used to adjust current ts is static or dynamtic frame
132 char temp_str = 0;
133 int fd = open("/sys/module/di/parameters/frame_dynamic", O_RDWR);
134 if (fd <= 0) {
135 LOGE("open /sys/module/di/parameters/frame_dynamic ERROR!!\n");
136 return;
137 }
138
139 if (read(fd, &temp_str, 1) > 0) {
140 if (temp_str== 'N') {
141 mCur_dest_backlight = mCur_source_default_backlight;
142 }
143 else if (temp_str == 'Y') {
144 mCur_dest_backlight = dynamicGamma + dynamicGammaOffset;
145
146 if (mCur_dest_backlight > mCur_source_default_backlight) {
147 mCur_dest_backlight = mCur_source_default_backlight;
148 }
149 else if (mCur_dest_backlight < 0) {
150 mCur_dest_backlight = 0;
151 }
152 }
153 }
154 close(fd);
155 */
156}
157
158void AutoBackLight::adjustBacklight()
159{
160 if (mCurrent_backlight == mCur_dest_backlight) {
161 return;
162 } else if ((mCurrent_backlight - mCur_dest_backlight) > -2 && (mCurrent_backlight - mCur_dest_backlight) < 2) {
163 mCurrent_backlight = mCur_dest_backlight;
164 myVpp->SetBacklight(mCurrent_backlight, mAutoBacklightSource, 0);
165 } else if (mCurrent_backlight < mCur_dest_backlight) {
166 mCurrent_backlight = mCurrent_backlight + 2;
167 myVpp->SetBacklight(mCurrent_backlight, mAutoBacklightSource, 0);
168 } else if (mCurrent_backlight > mCur_dest_backlight) {
169 mCurrent_backlight = mCurrent_backlight - 2;
170 myVpp->SetBacklight(mCurrent_backlight, mAutoBacklightSource, 0);
171 }
172
173 //LOGD("mCurrent_backlight = %d", mCurrent_backlight);
174}
175
176/**
177 * @ description: get current picture's average brightness
178 * @ return: 0~255,0 is darkest,255 is brightest
179 */
180int AutoBackLight::HistogramGet_AVE()
181{
182 int hist_ave = 0;
183 tvin_parm_t vdinParam;
184 if (0 == myTvin->VDIN_GetVdinParam(&vdinParam)) {
185 if (vdinParam.pixel_sum != 0) {
186 hist_ave = vdinParam.luma_sum / vdinParam.pixel_sum;
187 LOGD("[hist_ave][%d].", hist_ave);
188 return hist_ave;
189 }
190 LOGE("vdinParam.pixel_sum is zero, so the value is infinity\n");
191 return -1;
192 }
193 LOGE("VDIN_GetVdinParam get data error!!!\n");
194 return -1;
195}
196
197bool AutoBackLight::threadLoop()
198{
199 int sleeptime = 50;//ms
200 int adjustBacklightCount = 0;
201 while ( mAutoBacklight_OnOff_Flag ) {
202 usleep ( sleeptime * 1000 );
203 adjustBacklightCount++;
204 if (adjustBacklightCount == 24) {
205 adjustBacklightCount = 0;
206 adjustDstBacklight();
207 }
208 adjustBacklight();
209 }
210
211 return false;//return true, run again, return false,not run.
212}
213
generated by cgit at 2024-05-11 05:23:22 (GMT)