| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * QEMU vt100 |
| 4 | */ |
| 5 | #ifndef VT100_H |
| 6 | #define VT100_H |
| 7 | |
| 8 | #include "chardev/char.h" |
| 9 | #include "ui/console.h" |
| 10 | #include "qemu/fifo8.h" |
| 11 | #include "qemu/queue.h" |
| 12 | |
| 13 | typedef struct TextAttributes { |
| 14 | uint8_t fgcol:4; |
| 15 | uint8_t bgcol:4; |
| 16 | uint8_t bold:1; |
| 17 | uint8_t uline:1; |
| 18 | uint8_t blink:1; |
| 19 | uint8_t invers:1; |
| 20 | uint8_t unvisible:1; |
| 21 | } TextAttributes; |
| 22 | |
| 23 | #define TEXT_ATTRIBUTES_DEFAULT ((TextAttributes) { \ |
| 24 | .fgcol = QEMU_COLOR_WHITE, \ |
| 25 | .bgcol = QEMU_COLOR_BLACK \ |
| 26 | }) |
| 27 | |
| 28 | typedef struct TextCell { |
| 29 | uint8_t ch; |
| 30 | TextAttributes t_attrib; |
| 31 | } TextCell; |
| 32 | |
| 33 | #define MAX_ESC_PARAMS 3 |
| 34 | |
| 35 | enum TTYState { |
| 36 | TTY_STATE_NORM, |
| 37 | TTY_STATE_ESC, |
| 38 | TTY_STATE_CSI, |
| 39 | TTY_STATE_G0, |
| 40 | TTY_STATE_G1, |
| 41 | TTY_STATE_OSC, |
| 42 | }; |
| 43 | |
| 44 | typedef struct QemuVT100 QemuVT100; |
| 45 | |
| 46 | struct QemuVT100 { |
| 47 | pixman_image_t *image; |
| 48 | void (*image_update)(QemuVT100 *vt, int x, int y, int width, int height); |
| 49 | |
| 50 | ChardevVCEncoding encoding; |
| 51 | int width; |
| 52 | int height; |
| 53 | int total_height; |
| 54 | int backscroll_height; |
| 55 | int x, y; |
| 56 | int y_displayed; |
| 57 | int y_base; |
| 58 | TextCell *cells; |
| 59 | int text_x[2], text_y[2], cursor_invalidate; |
| 60 | int echo; |
| 61 | |
| 62 | int update_x0; |
| 63 | int update_y0; |
| 64 | int update_x1; |
| 65 | int update_y1; |
| 66 | |
| 67 | enum TTYState state; |
| 68 | int esc_params[MAX_ESC_PARAMS]; |
| 69 | int nb_esc_params; |
| 70 | uint32_t utf8_state; /* UTF-8 DFA decoder state */ |
| 71 | uint32_t utf8_codepoint; /* accumulated UTF-8 code point */ |
| 72 | TextAttributes t_attrib; /* currently active text attributes */ |
| 73 | TextAttributes t_attrib_saved; |
| 74 | int x_saved, y_saved; |
| 75 | /* fifo for key pressed */ |
| 76 | Fifo8 out_fifo; |
| 77 | void (*out_flush)(QemuVT100 *vt); |
| 78 | |
| 79 | QTAILQ_ENTRY(QemuVT100) list; |
| 80 | }; |
| 81 | |
| 82 | void vt100_init(QemuVT100 *vt, |
| 83 | pixman_image_t *image, |
| 84 | ChardevVCEncoding encoding, |
| 85 | void (*image_update)(QemuVT100 *vt, int x, int y, int width, int height), |
| 86 | void (*out_flush)(QemuVT100 *vt)); |
| 87 | void vt100_fini(QemuVT100 *vt); |
| 88 | |
| 89 | void vt100_update_cursor(void); |
| 90 | size_t vt100_input(QemuVT100 *vt, const uint8_t *buf, size_t len); |
| 91 | void vt100_keysym(QemuVT100 *vt, int keysym); |
| 92 | void vt100_set_image(QemuVT100 *vt, pixman_image_t *image); |
| 93 | void vt100_refresh(QemuVT100 *vt); |
| 94 | |
| 95 | #endif |