diff options
Diffstat (limited to '')
| -rw-r--r-- | src/calibrator.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/src/calibrator.c b/src/calibrator.c index e978ccf..67e8346 100644 --- a/src/calibrator.c +++ b/src/calibrator.c @@ -25,7 +25,13 @@ -static int draw_contrast_brightness(void) +/** + * Draw bars in different shades of grey, red, green and blue + * used for calibrating the contrast and brightness + * + * @return Zero on success, -1 on error + */ +int draw_contrast_brightness(void) { const int CONTRAST_BRIGHTNESS_LEVELS[21] = { @@ -57,7 +63,15 @@ static int draw_contrast_brightness(void) } -static void draw_digit(framebuffer_t* restrict fb, int colour, uint32_t x, uint32_t y) +/** + * Draw a seven segment display + * + * @param fb The framebuffer to draw on + * @param colour The intensity of the least intense colour to use + * @param x The X component of the top left corner of the seven segment display + * @param y The Y component of the top left corner of the seven segment display + */ +void draw_digit(framebuffer_t* restrict fb, int colour, uint32_t x, uint32_t y) { uint32_t c; @@ -84,7 +98,17 @@ static void draw_digit(framebuffer_t* restrict fb, int colour, uint32_t x, uint3 } -static int gamma_digit(drm_crtc_t* restrict crtc, int colour, size_t value) +/** + * Manipulate a CRT controllers gamma ramps to display a specific digit + * for one of the seven segment display on only that CRT controller's + * monitors + * + * @param crtc The CRT controller information + * @param colour The intensity of the least intense colour in the seven segment display + * @param value The valud of the digit to display + * @return Zero on success, -1 on error + */ +int gamma_digit(drm_crtc_t* restrict crtc, int colour, size_t value) { #define __ 0 const int DIGITS[11] = { 1 | 2 | 4 | __ | 16 | 32 | 64, /* (0) */ @@ -110,7 +134,12 @@ static int gamma_digit(drm_crtc_t* restrict crtc, int colour, size_t value) } -static int draw_id(void) +/** + * Draw an unique index on each monitor + * + * @return Zero on success, -1 on error + */ +int draw_id(void) { size_t f, c, i, id = 0, fn = fb_count(), cn = drm_card_count(); for (f = 0; f < fn; f++) |