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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MPLAYER_CSPUTILS_H
#define MPLAYER_CSPUTILS_H
#include <stdbool.h>
#include <stdint.h>
#include <libplacebo/colorspace.h>
#include "options/m_option.h"
/* NOTE: the csp and levels AUTO values are converted to specific ones
* above vf/vo level. At least vf_scale relies on all valid settings being
* nonzero at vf/vo level.
*/
extern const struct m_opt_choice_alternatives pl_csp_names[];
extern const struct m_opt_choice_alternatives pl_csp_levels_names[];
extern const struct m_opt_choice_alternatives pl_csp_prim_names[];
extern const struct m_opt_choice_alternatives pl_csp_trc_names[];
enum mp_csp_light {
MP_CSP_LIGHT_AUTO,
MP_CSP_LIGHT_DISPLAY,
MP_CSP_LIGHT_SCENE_HLG,
MP_CSP_LIGHT_SCENE_709_1886,
MP_CSP_LIGHT_SCENE_1_2,
MP_CSP_LIGHT_COUNT
};
extern const struct m_opt_choice_alternatives mp_csp_light_names[];
// These constants are based on the ICC specification (Table 23) and match
// up with the API of LittleCMS, which treats them as integers.
enum mp_render_intent {
MP_INTENT_PERCEPTUAL = 0,
MP_INTENT_RELATIVE_COLORIMETRIC = 1,
MP_INTENT_SATURATION = 2,
MP_INTENT_ABSOLUTE_COLORIMETRIC = 3
};
// The numeric values (except -1) match the Matroska StereoMode element value.
enum mp_stereo3d_mode {
MP_STEREO3D_INVALID = -1,
/* only modes explicitly referenced in the code are listed */
MP_STEREO3D_MONO = 0,
MP_STEREO3D_SBS2L = 1,
MP_STEREO3D_AB2R = 2,
MP_STEREO3D_AB2L = 3,
MP_STEREO3D_SBS2R = 11,
/* no explicit enum entries for most valid values */
MP_STEREO3D_COUNT = 15, // 14 is last valid mode
};
extern const struct m_opt_choice_alternatives mp_stereo3d_names[];
#define MP_STEREO3D_NAME(x) m_opt_choice_str(mp_stereo3d_names, x)
#define MP_STEREO3D_NAME_DEF(x, def) \
(MP_STEREO3D_NAME(x) ? MP_STEREO3D_NAME(x) : (def))
// For many colorspace conversions, in particular those involving HDR, an
// implicit reference white level is needed. Since this magic constant shows up
// a lot, give it an explicit name. The value of 203 cd/m² comes from ITU-R
// Report BT.2408, and the value for HLG comes from the cited HLG 75% level
// (transferred to scene space).
#define MP_REF_WHITE 203.0
#define MP_REF_WHITE_HLG 3.17955
struct mp_csp_params {
struct pl_color_repr repr;
struct pl_color_space color;
enum pl_color_levels levels_out; // output device
float brightness;
float contrast;
float hue;
float saturation;
float gamma;
// discard U/V components
bool gray;
// input is already centered and range-expanded
bool is_float;
// texture_bits/input_bits is for rescaling fixed point input to range [0,1]
int texture_bits;
int input_bits;
};
#define MP_CSP_PARAMS_DEFAULTS { \
.repr = pl_color_repr_sdtv, \
.levels_out = PL_COLOR_LEVELS_FULL, \
.brightness = 0, .contrast = 1, .hue = 0, .saturation = 1, \
.gamma = 1, .texture_bits = 8, .input_bits = 8}
struct mp_image_params;
void mp_csp_set_image_params(struct mp_csp_params *params,
const struct mp_image_params *imgparams);
enum mp_chroma_location {
MP_CHROMA_AUTO,
MP_CHROMA_TOPLEFT, // uhd
MP_CHROMA_LEFT, // mpeg2/4, h264
MP_CHROMA_CENTER, // mpeg1, jpeg
MP_CHROMA_COUNT,
};
extern const struct m_opt_choice_alternatives mp_chroma_names[];
enum mp_alpha_type {
MP_ALPHA_AUTO,
MP_ALPHA_STRAIGHT,
MP_ALPHA_PREMUL,
};
extern const struct m_opt_choice_alternatives mp_alpha_names[];
extern const struct m_sub_options mp_csp_equalizer_conf;
struct mpv_global;
struct mp_csp_equalizer_state *mp_csp_equalizer_create(void *ta_parent,
struct mpv_global *global);
bool mp_csp_equalizer_state_changed(struct mp_csp_equalizer_state *state);
void mp_csp_equalizer_state_get(struct mp_csp_equalizer_state *state,
struct mp_csp_params *params);
struct mp_csp_col_xy {
float x, y;
};
static inline float mp_xy_X(struct mp_csp_col_xy xy) {
return xy.x / xy.y;
}
static inline float mp_xy_Z(struct mp_csp_col_xy xy) {
return (1 - xy.x - xy.y) / xy.y;
}
struct mp_csp_primaries {
struct mp_csp_col_xy red, green, blue, white;
};
enum pl_color_system mp_csp_guess_colorspace(int width, int height);
enum pl_color_primaries mp_csp_guess_primaries(int width, int height);
enum mp_chroma_location avchroma_location_to_mp(int avloc);
int mp_chroma_location_to_av(enum mp_chroma_location mploc);
void mp_get_chroma_location(enum mp_chroma_location loc, int *x, int *y);
struct mp_csp_primaries mp_get_csp_primaries(enum pl_color_primaries csp);
float mp_trc_nom_peak(enum pl_color_transfer trc);
bool mp_trc_is_hdr(enum pl_color_transfer trc);
/* Color conversion matrix: RGB = m * YUV + c
* m is in row-major matrix, with m[row][col], e.g.:
* [ a11 a12 a13 ] float m[3][3] = { { a11, a12, a13 },
* [ a21 a22 a23 ] { a21, a22, a23 },
* [ a31 a32 a33 ] { a31, a32, a33 } };
* This is accessed as e.g.: m[2-1][1-1] = a21
* In particular, each row contains all the coefficients for one of R, G, B,
* while each column contains all the coefficients for one of Y, U, V:
* m[r,g,b][y,u,v] = ...
* The matrix could also be viewed as group of 3 vectors, e.g. the 1st column
* is the Y vector (1, 1, 1), the 2nd is the U vector, the 3rd the V vector.
* The matrix might also be used for other conversions and colorspaces.
*/
struct mp_cmat {
float m[3][3];
float c[3];
};
void mp_get_rgb2xyz_matrix(struct mp_csp_primaries space, float m[3][3]);
void mp_get_cms_matrix(struct mp_csp_primaries src, struct mp_csp_primaries dest,
enum mp_render_intent intent, float cms_matrix[3][3]);
double mp_get_csp_mul(enum pl_color_system csp, int input_bits, int texture_bits);
void mp_get_csp_uint_mul(enum pl_color_system csp, enum pl_color_levels levels,
int bits, int component, double *out_m, double *out_o);
void mp_get_csp_matrix(struct mp_csp_params *params, struct mp_cmat *out);
void mp_invert_matrix3x3(float m[3][3]);
void mp_invert_cmat(struct mp_cmat *out, struct mp_cmat *in);
void mp_map_fixp_color(struct mp_cmat *matrix, int ibits, int in[3],
int obits, int out[3]);
#endif /* MPLAYER_CSPUTILS_H */
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