diff options
Diffstat (limited to 'drivers/tty/vt/vt.c')
| -rw-r--r-- | drivers/tty/vt/vt.c | 89 |
1 files changed, 80 insertions, 9 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 3ad0b61e35b..5e0f6ff2e2f 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -735,7 +735,7 @@ static void visual_init(struct vc_data *vc, int num, int init) vc->vc_num = num; vc->vc_display_fg = &master_display_fg; vc->vc_uni_pagedir_loc = &vc->vc_uni_pagedir; - vc->vc_uni_pagedir = 0; + vc->vc_uni_pagedir = NULL; vc->vc_hi_font_mask = 0; vc->vc_complement_mask = 0; vc->vc_can_do_color = 0; @@ -1231,6 +1231,52 @@ static void default_attr(struct vc_data *vc) vc->vc_color = vc->vc_def_color; } +struct rgb { u8 r; u8 g; u8 b; }; + +struct rgb rgb_from_256(int i) +{ + struct rgb c; + if (i < 8) { /* Standard colours. */ + c.r = i&1 ? 0xaa : 0x00; + c.g = i&2 ? 0xaa : 0x00; + c.b = i&4 ? 0xaa : 0x00; + } else if (i < 16) { + c.r = i&1 ? 0xff : 0x55; + c.g = i&2 ? 0xff : 0x55; + c.b = i&4 ? 0xff : 0x55; + } else if (i < 232) { /* 6x6x6 colour cube. */ + c.r = (i - 16) / 36 * 85 / 2; + c.g = (i - 16) / 6 % 6 * 85 / 2; + c.b = (i - 16) % 6 * 85 / 2; + } else /* Grayscale ramp. */ + c.r = c.g = c.b = i * 10 - 2312; + return c; +} + +static void rgb_foreground(struct vc_data *vc, struct rgb c) +{ + u8 hue, max = c.r; + if (c.g > max) + max = c.g; + if (c.b > max) + max = c.b; + hue = (c.r > max/2 ? 4 : 0) + | (c.g > max/2 ? 2 : 0) + | (c.b > max/2 ? 1 : 0); + if (hue == 7 && max <= 0x55) + hue = 0, vc->vc_intensity = 2; + else + vc->vc_intensity = (max > 0xaa) + 1; + vc->vc_color = (vc->vc_color & 0xf0) | hue; +} + +static void rgb_background(struct vc_data *vc, struct rgb c) +{ + /* For backgrounds, err on the dark side. */ + vc->vc_color = (vc->vc_color & 0x0f) + | (c.r&0x80) >> 1 | (c.g&0x80) >> 2 | (c.b&0x80) >> 3; +} + /* console_lock is held */ static void csi_m(struct vc_data *vc) { @@ -1302,8 +1348,7 @@ static void csi_m(struct vc_data *vc) case 27: vc->vc_reverse = 0; break; - case 38: - case 48: /* ITU T.416 + case 38: /* ITU T.416 * Higher colour modes. * They break the usual properties of SGR codes * and thus need to be detected and ignored by @@ -1315,15 +1360,41 @@ static void csi_m(struct vc_data *vc) i++; if (i > vc->vc_npar) break; - if (vc->vc_par[i] == 5) /* 256 colours */ - i++; /* ubiquitous */ - else if (vc->vc_par[i] == 2) /* 24 bit colours */ - i += 3; /* extremely rare */ + if (vc->vc_par[i] == 5 && /* 256 colours */ + i < vc->vc_npar) { /* ubiquitous */ + i++; + rgb_foreground(vc, + rgb_from_256(vc->vc_par[i])); + } else if (vc->vc_par[i] == 2 && /* 24 bit */ + i <= vc->vc_npar + 3) {/* extremely rare */ + struct rgb c = {r:vc->vc_par[i+1], + g:vc->vc_par[i+2], + b:vc->vc_par[i+3]}; + rgb_foreground(vc, c); + i += 3; + } /* Subcommands 3 (CMY) and 4 (CMYK) are so insane - * that detecting them is not worth the few extra - * bytes of kernel's size. + * there's no point in supporting them. */ break; + case 48: + i++; + if (i > vc->vc_npar) + break; + if (vc->vc_par[i] == 5 && /* 256 colours */ + i < vc->vc_npar) { + i++; + rgb_background(vc, + rgb_from_256(vc->vc_par[i])); + } else if (vc->vc_par[i] == 2 && /* 24 bit */ + i <= vc->vc_npar + 3) { + struct rgb c = {r:vc->vc_par[i+1], + g:vc->vc_par[i+2], + b:vc->vc_par[i+3]}; + rgb_background(vc, c); + i += 3; + } + break; case 39: vc->vc_color = (vc->vc_def_color & 0x0f) | (vc->vc_color & 0xf0); break; |