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Diffstat (limited to 'src/libbacklight.h')
| -rw-r--r-- | src/libbacklight.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/libbacklight.h b/src/libbacklight.h new file mode 100644 index 00000000..0c326711 --- /dev/null +++ b/src/libbacklight.h @@ -0,0 +1,49 @@ +#ifndef LIBBACKLIGHT_H +#define LIBBACKLIGHT_H +#include <libudev.h> +#include <stdint.h> + +#ifdef __cplusplus +extern "C" { +#endif + +enum backlight_type { + BACKLIGHT_RAW, + BACKLIGHT_PLATFORM, + BACKLIGHT_FIRMWARE +}; + +struct backlight { + char *path; + int max_brightness; + int brightness; + enum backlight_type type; +}; + +/* + * Find and set up a backlight for a valid udev connector device, i.e. one + * matching drm subsytem and with status of connected. + */ +struct backlight *backlight_init(struct udev_device *drm_device, + uint32_t connector_type); + +/* Free backlight resources */ +void backlight_destroy(struct backlight *backlight); + +/* Provide the maximum backlight value */ +long backlight_get_max_brightness(struct backlight *backlight); + +/* Provide the cached backlight value */ +long backlight_get_brightness(struct backlight *backlight); + +/* Provide the hardware backlight value */ +long backlight_get_actual_brightness(struct backlight *backlight); + +/* Set the backlight to a value between 0 and max */ +long backlight_set_brightness(struct backlight *backlight, long brightness); + +#ifdef __cplusplus +} +#endif + +#endif /* LIBBACKLIGHT_H */ |