diff options
Diffstat (limited to 'video/csputils.c')
| -rw-r--r-- | video/csputils.c | 25 |
1 files changed, 8 insertions, 17 deletions
diff --git a/video/csputils.c b/video/csputils.c index 1f0fa7d90e..71ab0513a5 100644 --- a/video/csputils.c +++ b/video/csputils.c @@ -710,16 +710,6 @@ void mp_get_yuv2rgb_coeffs(struct mp_csp_params *params, struct mp_cmat *m) - (m->m[i][1] + m->m[i][2]) * yuvlev.cmid + params->brightness; } - - 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; - double out_scale = (1 << out_bits) - 1.0; - for (int i = 0; i < 3; i++) { - m->c[i] *= out_scale; // constant is 1.0 - for (int x = 0; x < 3; x++) - m->m[i][x] *= out_scale / in_scale; - } } // Set colorspace related fields in p from f. Don't touch other fields. @@ -793,16 +783,17 @@ void mp_invert_yuv2rgb(struct mp_cmat *out, struct mp_cmat *in) } // Multiply the color in c with the given matrix. -// c is {R, G, B} or {Y, U, V} (depending on input/output and matrix). -// Output is clipped to the given number of bits. -void mp_map_int_color(struct mp_cmat *matrix, int clip_bits, int c[3]) +// i/o is {R, G, B} or {Y, U, V} (depending on input/output and matrix), using +// a fixed point representation with the given number of bits (so for bits==8, +// [0,255] maps to [0,1]). The output is clipped to the range as needed. +void mp_map_fixp_color(struct mp_cmat *matrix, int ibits, int in[3], + int obits, int out[3]) { - int in[3] = {c[0], c[1], c[2]}; for (int i = 0; i < 3; i++) { double val = matrix->c[i]; for (int x = 0; x < 3; x++) - val += matrix->m[i][x] * in[x]; - int ival = lrint(val); - c[i] = av_clip(ival, 0, (1 << clip_bits) - 1); + val += matrix->m[i][x] * in[x] / ((1 << ibits) - 1); + int ival = lrint(val * ((1 << obits) - 1)); + out[i] = av_clip(ival, 0, (1 << obits) - 1); } } |