diff options
| -rw-r--r-- | video/csputils.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/video/csputils.c b/video/csputils.c index 238c4daf4e..ca092fcb3c 100644 --- a/video/csputils.c +++ b/video/csputils.c @@ -689,6 +689,14 @@ void mp_get_yuv2rgb_coeffs(struct mp_csp_params *params, struct mp_cmat *m) + params->brightness; } + // Brightness adds a constant to output R,G,B. + // Contrast scales Y around 1/2 (not 0 in this implementation). + for (int i = 0; i < 3; i++) { + m->c[i] += params->brightness; + m->m[i][0] *= params->contrast; + m->c[i] += (rgblev.max-rgblev.min) * (1 - params->contrast)/2; + } + int in_bits = FFMAX(params->int_bits_in, 1); int out_bits = FFMAX(params->int_bits_out, 1); double in_scale = (1 << in_bits) - 1.0; |