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Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
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dsp/tty/quant.h Normal file
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#ifndef DSP_TTY_QUANT_H_
#define DSP_TTY_QUANT_H_
#include "dsp/tty/ttyrgb.h"
#include "libc/assert.h"
#include "libc/bits/bits.h"
#include "libc/bits/xmmintrin.h"
#include "libc/limits.h"
#include "libc/str/str.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
#define TL 0
#define TR 1
#define BL 2
#define BR 3
typedef __m128 (*tty2rgbf_f)(struct TtyRgb);
typedef char *(*setbg_f)(char *, struct TtyRgb);
typedef char *(*setbgfg_f)(char *, struct TtyRgb, struct TtyRgb);
typedef char *(*setfg_f)(char *, struct TtyRgb);
typedef struct TtyRgb (*rgb2tty_f)(int, int, int);
typedef struct TtyRgb (*rgb2ttyf_f)(__m128);
typedef struct TtyRgb (*tty2rgb_f)(struct TtyRgb);
typedef struct TtyRgb ttypalette_t[2][8];
struct TtyQuant {
enum TtyQuantizationAlgorithm {
kTtyQuantAnsi,
kTtyQuantTrue,
kTtyQuantXterm256,
} alg;
enum TtyBlocksSelection {
kTtyBlocksUnicode,
kTtyBlocksCp437,
} blocks;
enum TtyQuantizationChannels {
kTtyQuantGrayscale = 1,
kTtyQuantRgb = 3,
} chans;
unsigned min;
unsigned max;
setbg_f setbg;
setfg_f setfg;
setbgfg_f setbgfg;
rgb2tty_f rgb2tty;
rgb2ttyf_f rgb2ttyf;
tty2rgb_f tty2rgb;
tty2rgbf_f tty2rgbf;
const ttypalette_t *palette;
};
extern const ttypalette_t kCgaPalette;
extern const ttypalette_t kXtermPalette;
extern const ttypalette_t kTangoPalette;
extern const uint8_t kXtermCubeSteps[6];
extern double g_xterm256_gamma;
extern struct TtyRgb g_ansi2rgb_[256];
extern struct TtyQuant g_ttyquant_;
extern const uint8_t kXtermXlat[2][256];
void ttyquantinit(enum TtyQuantizationAlgorithm, enum TtyQuantizationChannels,
enum TtyBlocksSelection);
extern char *ttyraster(char *, const struct TtyRgb *, size_t, size_t,
struct TtyRgb, struct TtyRgb);
#define ttyquant() (&g_ttyquant_)
#define TTYQUANT() VEIL("r", &g_ttyquant_)
#define rgb2tty(...) (ttyquant()->rgb2tty(__VA_ARGS__))
#define tty2rgb(...) (ttyquant()->tty2rgb(__VA_ARGS__))
#define rgb2ttyf(...) (ttyquant()->rgb2ttyf(__VA_ARGS__))
#define tty2rgbf(...) (ttyquant()->tty2rgbf(__VA_ARGS__))
#define setbg(...) (ttyquant()->setbg(__VA_ARGS__))
#define setfg(...) (ttyquant()->setfg(__VA_ARGS__))
#define setbgfg(...) (ttyquant()->setbgfg(__VA_ARGS__))
forceinline bool ttyeq(struct TtyRgb x, struct TtyRgb y) {
return x.r == y.r && x.g == y.g && x.b == y.b;
}
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* DSP_TTY_QUANT_H_ */