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🎥 Command line media player
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#ifndef MPLAYER_CSPUTILS_H#define MPLAYER_CSPUTILS_H
#include <stdbool.h>#include <stdint.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. */
enum mp_csp { MP_CSP_AUTO, MP_CSP_BT_601, MP_CSP_BT_709, MP_CSP_SMPTE_240M, MP_CSP_BT_2020_NC, MP_CSP_BT_2020_C, MP_CSP_RGB, MP_CSP_XYZ, MP_CSP_YCGCO, MP_CSP_COUNT};
extern const struct m_opt_choice_alternatives mp_csp_names[];
enum mp_csp_levels { MP_CSP_LEVELS_AUTO, MP_CSP_LEVELS_TV, MP_CSP_LEVELS_PC, MP_CSP_LEVELS_COUNT,};
extern const struct m_opt_choice_alternatives mp_csp_levels_names[];
enum mp_csp_prim { MP_CSP_PRIM_AUTO, MP_CSP_PRIM_BT_601_525, MP_CSP_PRIM_BT_601_625, MP_CSP_PRIM_BT_709, MP_CSP_PRIM_BT_2020, MP_CSP_PRIM_BT_470M, MP_CSP_PRIM_APPLE, MP_CSP_PRIM_ADOBE, MP_CSP_PRIM_PRO_PHOTO, MP_CSP_PRIM_CIE_1931, MP_CSP_PRIM_DCI_P3, MP_CSP_PRIM_DISPLAY_P3, MP_CSP_PRIM_V_GAMUT, MP_CSP_PRIM_S_GAMUT, MP_CSP_PRIM_COUNT};
extern const struct m_opt_choice_alternatives mp_csp_prim_names[];
enum mp_csp_trc { MP_CSP_TRC_AUTO, MP_CSP_TRC_BT_1886, MP_CSP_TRC_SRGB, MP_CSP_TRC_LINEAR, MP_CSP_TRC_GAMMA18, MP_CSP_TRC_GAMMA20, MP_CSP_TRC_GAMMA22, MP_CSP_TRC_GAMMA24, MP_CSP_TRC_GAMMA26, MP_CSP_TRC_GAMMA28, MP_CSP_TRC_PRO_PHOTO, MP_CSP_TRC_PQ, MP_CSP_TRC_HLG, MP_CSP_TRC_V_LOG, MP_CSP_TRC_S_LOG1, MP_CSP_TRC_S_LOG2, MP_CSP_TRC_COUNT};
extern const struct m_opt_choice_alternatives mp_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))
struct mp_colorspace { enum mp_csp space; enum mp_csp_levels levels; enum mp_csp_prim primaries; enum mp_csp_trc gamma; enum mp_csp_light light; float sig_peak; // highest relative value in signal. 0 = unknown/auto};
// 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 100 cd/m² comes from ITU-R// documents such as ITU-R BT.2100#define MP_REF_WHITE 100.0
// Replaces unknown values in the first struct by those of the second structvoid mp_colorspace_merge(struct mp_colorspace *orig, struct mp_colorspace *new);
struct mp_csp_params { struct mp_colorspace color; // input colorspace enum mp_csp_levels levels_out; // output device float brightness; float contrast; float hue; float saturation; float gamma; // discard U/V components bool gray; // 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 { \ .color = { .space = MP_CSP_BT_601, \ .levels = MP_CSP_LEVELS_TV }, \ .levels_out = MP_CSP_LEVELS_PC, \ .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);
bool mp_colorspace_equal(struct mp_colorspace c1, struct mp_colorspace c2);
enum mp_chroma_location { MP_CHROMA_AUTO, MP_CHROMA_LEFT, // mpeg2/4, h264 MP_CHROMA_CENTER, // mpeg1, jpeg MP_CHROMA_COUNT,};
extern const struct m_opt_choice_alternatives mp_chroma_names[];
extern const struct m_sub_options mp_csp_equalizer_conf;
enum mp_csp_equalizer_param { MP_CSP_EQ_BRIGHTNESS, MP_CSP_EQ_CONTRAST, MP_CSP_EQ_HUE, MP_CSP_EQ_SATURATION, MP_CSP_EQ_GAMMA, MP_CSP_EQ_OUTPUT_LEVELS, MP_CSP_EQ_COUNT,};
// Default initialization with 0 is enough, except for the capabilities fieldstruct mp_csp_equalizer_opts { // Value for each property is in the range [-100, 100]. // 0 is default, meaning neutral or no change. int values[MP_CSP_EQ_COUNT];};
void mp_csp_copy_equalizer_values(struct mp_csp_params *params, const struct mp_csp_equalizer_opts *eq);
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 mp_csp avcol_spc_to_mp_csp(int avcolorspace);enum mp_csp_levels avcol_range_to_mp_csp_levels(int avrange);enum mp_csp_prim avcol_pri_to_mp_csp_prim(int avpri);enum mp_csp_trc avcol_trc_to_mp_csp_trc(int avtrc);
int mp_csp_to_avcol_spc(enum mp_csp colorspace);int mp_csp_levels_to_avcol_range(enum mp_csp_levels range);int mp_csp_prim_to_avcol_pri(enum mp_csp_prim prim);int mp_csp_trc_to_avcol_trc(enum mp_csp_trc trc);
enum mp_csp mp_csp_guess_colorspace(int width, int height);enum mp_csp_prim 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 mp_csp_prim csp);float mp_trc_nom_peak(enum mp_csp_trc trc);bool mp_trc_is_hdr(enum mp_csp_trc 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 mp_csp csp, int input_bits, int texture_bits);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 */