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add set_brightness in framebuffer.h (#1659)

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old-commit-hash: 8ad1135e80
This commit is contained in:
Dean Lee
2020-06-11 01:28:18 +08:00
committed by GitHub
parent 2dfb8db054
commit 0f9202c4b7
5 changed files with 19 additions and 31 deletions
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19
selfdrive/common/framebuffer.cc
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@@ -12,7 +12,6 @@
#include <GLES2/gl2.h>
#include <EGL/eglext.h>
#define BACKLIGHT_CONTROL "/sys/class/leds/lcd-backlight/brightness"
#define BACKLIGHT_LEVEL "205"
using namespace android;
@@ -123,14 +122,7 @@ extern "C" FramebufferState* framebuffer_init(
printf("gl version %s\n", glGetString(GL_VERSION));
// set brightness
int brightness_fd = open(BACKLIGHT_CONTROL, O_RDWR);
if (brightness_fd != -1){
const char brightness_level[] = BACKLIGHT_LEVEL;
write(brightness_fd, brightness_level, strlen(brightness_level));
close(brightness_fd);
}
set_brightness(BACKLIGHT_LEVEL);
if (out_w) *out_w = w;
if (out_h) *out_h = h;
@@ -143,3 +135,12 @@ extern "C" void framebuffer_swap(FramebufferState *s) {
assert(glGetError() == GL_NO_ERROR);
}
extern "C" bool set_brightness(int brightness) {
FILE *f = fopen("/sys/class/leds/lcd-backlight/brightness", "wb");
if (f != NULL) {
fprintf(f, "%d", brightness);
fclose(f);
return true;
}
return false;
}