X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/74032daeb88c104c67738774827440f4264b371e..789ebb2d04033053b3cfeaa73648e3a1c3b3d8f5:/video/text.c?ds=inline diff --git a/video/text.c b/video/text.c deleted file mode 100644 index e7b0db3..0000000 --- a/video/text.c +++ /dev/null @@ -1,115 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include - -static unsigned char _font[256 * 32]; - -/* Must be called from a firstrun context, where we don't care about saving - * 0x3CE state. */ -void text_init() -{ - unsigned char oldread; - smram_state_t old_state = smram_save_state(); - outb(0x3CE, 0x05 /* Mode register */); - outb(0x3CF, inb(0x3CF) & ~(0x10 /* Odd/even */)); - outb(0x3CE, 0x04 /* Read register */); - oldread = inb(0x3CF); - outb(0x3CF, 0x02 /* Font plane */); - smram_aseg_set_state(SMRAM_ASEG_SMMCODE); - memcpy(_font, p2v(0xB8000), sizeof(_font)); - smram_restore_state(old_state); - outb(0x3CF, oldread); -} - -void text_render(char *buf, int x, int y, int w, int h) -{ - unsigned char *video = (unsigned char *)0xB8000; - unsigned int textx = x / 9; - unsigned int texty = y / 14; - unsigned int cx, cy; - unsigned char ch, at, font; - smram_state_t old_state = smram_save_state(); - - outputf("text_render: buf %08x, (%d,%d),(%d,%d)", buf, x, y, w, h); - - smram_aseg_set_state(SMRAM_ASEG_SMMCODE); - for (cy = y; cy < (y + h); cy++) - { - texty = cy / 14; - textx = cx / 9; - ch = video[texty * 50 + textx * 2]; - at = video[texty * 50 + textx * 2 + 1]; - font = _font[ch * 32 + cy % 14]; - for (cx = x; cx < (x + w); cx++) - { - unsigned int pos = cx % 9; - if (pos == 0) - { - textx = cx / 9; - ch = video[texty * 50 + textx * 2]; - at = video[texty * 50 + textx * 2 + 1]; - font = _font[ch * 32 + cy % 14]; - } - /* XXX always BGR888 */ - if (pos == 8) /* 9th pixel is cloned */ - pos = 7; - if ((font >> (7 - pos)) & 1) - { - *(buf++) = (at & 0x01) ? 0xFF : 0x00; - *(buf++) = (at & 0x02) ? 0xFF : 0x00; - *(buf++) = (at & 0x04) ? 0xFF : 0x00; - } else { - *(buf++) = (at & 0x10) ? 0xFF : 0x00; - *(buf++) = (at & 0x20) ? 0xFF : 0x00; - *(buf++) = (at & 0x40) ? 0xFF : 0x00; - } - *(buf++) = 0; - } - } - smram_restore_state(old_state); -} - -uint32_t text_checksum(int x, int y, int w, int h) -{ - unsigned char *video = (unsigned char *)0xB8000; - unsigned int textx = x / 9; - unsigned int texty = y / 14; - int cx, cy; - unsigned char ch, at; - uint32_t cksm = 0; - smram_state_t old_state = smram_save_state(); - - outputf("checksum: (%d,%d),(%d,%d)", x,y,w,h); - - smram_aseg_set_state(SMRAM_ASEG_SMMCODE); - - for (cy = y; cy < (y + h); cy++) - { - texty = cy / 14; - textx = cx / 9; - ch = video[texty * 50 + textx * 2]; - at = video[texty * 50 + textx * 2 + 1]; - for (cx = x; cx < (x + w); cx++) - { - unsigned int pos = cx % 9; - if (pos == 0) - { - textx = cx / 9; - ch = video[texty * 50 + textx * 2]; - at = video[texty * 50 + textx * 2 + 1]; - } - - cksm += ch + (at << 16); - } - } - - smram_restore_state(old_state); - - outputf("checksum: %08x", cksm); - - return cksm; -}