diff options
Diffstat (limited to 'video/out/gl_video.c')
| -rw-r--r-- | video/out/gl_video.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/video/out/gl_video.c b/video/out/gl_video.c index f1ea03ed80..7420d9d4d1 100644 --- a/video/out/gl_video.c +++ b/video/out/gl_video.c @@ -355,6 +355,7 @@ static int validate_scaler_opt(struct mp_log *log, const m_option_t *opt, const struct m_sub_options gl_video_conf = { .opts = (const m_option_t[]) { OPT_FLOATRANGE("gamma", gamma, 0, 0.1, 2.0), + OPT_FLAG("gamma-auto", gamma_auto, 0), OPT_FLAG("srgb", srgb, 0), OPT_FLAG("npot", npot, 0), OPT_FLAG("pbo", pbo, 0), @@ -2564,6 +2565,31 @@ void gl_video_resize_redraw(struct gl_video *p, int w, int h) gl_video_render_frame(p, 0, NULL); } +float gl_video_scale_ambient_lux(float lmin, float lmax, + float rmin, float rmax, float lux) +{ + assert(lmax > lmin); + + float num = (rmax - rmin) * (log10(lux) - log10(lmin)); + float den = log10(lmax) - log10(lmin); + float result = num / den + rmin; + + // clamp the result + float max = MPMAX(rmax, rmin); + float min = MPMIN(rmax, rmin); + return MPMAX(MPMIN(result, max), min); +} + +void gl_video_set_ambient_lux(struct gl_video *p, int lux) +{ + if (p->opts.gamma_auto) { + float gamma = gl_video_scale_ambient_lux(16.0, 64.0, 2.40, 1.961, lux); + MP_INFO(p, "ambient light changed: %dlux (gamma: %f)\n", lux, gamma); + p->opts.gamma = MPMIN(1.0, 1.961 / gamma); + gl_video_eq_update(p); + } +} + void gl_video_set_hwdec(struct gl_video *p, struct gl_hwdec *hwdec) { p->hwdec = hwdec; |