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Code

PowerSaver: re-layouted code.

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No functional changes.
This commit is contained in:
Maarten ter Huurne 2011-10-23 06:56:01 +02:00
parent e73a8d06ea
commit ae685a9729
2 changed files with 67 additions and 64 deletions
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94
src/powersaver.cpp
View File

@ -1,34 +1,35 @@
#include "powersaver.h"
#include "debug.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "powersaver.h"
#include "debug.h"
PowerSaver* PowerSaver::instance = NULL;
Uint32 screenTimerCallback(Uint32, void *)
{
DEBUG("Disable Backlight Event\n");
PowerSaver::getInstance()->disableScreen();
return 0;
PowerSaver *PowerSaver::instance = NULL;
Uint32 screenTimerCallback(Uint32, void *) {
DEBUG("Disable Backlight Event\n");
PowerSaver::getInstance()->disableScreen();
return 0;
}
PowerSaver* PowerSaver::getInstance() {
if ( instance == NULL ) {
instance = new PowerSaver();
}
return instance;
PowerSaver *PowerSaver::getInstance() {
if (instance == NULL) {
instance = new PowerSaver();
}
return instance;
}
bool PowerSaver::isRunning() {
return instance != NULL;
}
PowerSaver::PowerSaver( ) {
PowerSaver::PowerSaver() {
SDL_InitSubSystem(SDL_INIT_TIMER);
setScreenTimeout(0);
screenTimer = NULL;
setScreenTimeout(0);
screenTimer = NULL;
}
PowerSaver::~PowerSaver() {
@ -37,40 +38,40 @@ PowerSaver::~PowerSaver() {
instance = NULL;
}
void PowerSaver::setScreenTimeout( unsigned int seconds ) {
screenTimeout = seconds;
resetScreenTimer();
void PowerSaver::setScreenTimeout(unsigned int seconds) {
screenTimeout = seconds;
resetScreenTimer();
}
void PowerSaver::resetScreenTimer() {
if ( screenTimer != NULL ) {
SDL_RemoveTimer(screenTimer);
}
if (screenTimer != NULL) {
SDL_RemoveTimer(screenTimer);
}
addScreenTimer();
//If display is off, turn on it
if ( !screenState ) {
enableScreen();
}
addScreenTimer();
// If display is off, turn on it.
if (!screenState) {
enableScreen();
}
}
void PowerSaver::addScreenTimer() {
//if timeout is zero, don't set timeout
if ( screenTimeout == 0 ) {
screenTimer = NULL;
return;
}
// If timeout is zero, don't set timeout.
if (screenTimeout == 0) {
screenTimer = NULL;
return;
}
screenTimer = SDL_AddTimer(screenTimeout*1000, screenTimerCallback,NULL);
if ( screenTimer == NULL ) {
screenTimer = SDL_AddTimer(screenTimeout * 1000, screenTimerCallback, NULL);
if (screenTimer == NULL) {
ERROR("Could not initialize SDLTimer: %s\n", SDL_GetError());
}
}
}
#define SCREEN_BLANK_PATH "/sys/class/graphics/fb0/blank"
void PowerSaver::setScreenBlanking( bool state ) {
const char* path = SCREEN_BLANK_PATH;
const char* blank = state ? "0" : "1";
void PowerSaver::setScreenBlanking(bool state) {
const char *path = SCREEN_BLANK_PATH;
const char *blank = state ? "0" : "1";
int fd = open(path, O_RDWR);
if (fd == -1) {
@ -82,18 +83,17 @@ void PowerSaver::setScreenBlanking( bool state ) {
}
close(fd);
}
screenState = state;
screenState = state;
}
void PowerSaver::enableScreen() {
if ( !screenState ) {
setScreenBlanking(true);
}
if (!screenState) {
setScreenBlanking(true);
}
}
void PowerSaver::disableScreen() {
if ( screenState ) {
setScreenBlanking(false);
}
if (screenState) {
setScreenBlanking(false);
}
}

37
src/powersaver.h
View File

@ -1,26 +1,29 @@
#ifndef POWERSAVER_H
#define POWERSAVER_H
#include <SDL.h>
class PowerSaver {
public:
static PowerSaver *getInstance();
static bool isRunning();
~PowerSaver();
void resetScreenTimer();
public:
static PowerSaver* getInstance();
static bool isRunning();
~PowerSaver();
void addScreenTimer();
void resetScreenTimer();
void enableScreen();
void disableScreen();
void enableScreen();
void disableScreen();
void setScreenTimeout(unsigned int seconds);
void setScreenTimeout( unsigned int seconds );
private:
PowerSaver( );
static PowerSaver* instance;
bool screenState;
unsigned int screenTimeout;
SDL_TimerID screenTimer;
void setScreenBlanking( bool state );
private:
PowerSaver();
void addScreenTimer();
void setScreenBlanking(bool state);
static PowerSaver *instance;
bool screenState;
unsigned int screenTimeout;
SDL_TimerID screenTimer;
};
#endif