static inline void *copy_dword(void *dst, void *src, size_t dword_count)
{
- asm volatile("rep; movsl"
- : "+D" (dst), "+S" (src), "+c" (dword_count));
- return dst; /* Updated destination pointer */
+ asm volatile ("rep; movsl":"+D" (dst), "+S"(src), "+c"(dword_count));
+ return dst; /* Updated destination pointer */
}
-static inline __attribute__((always_inline))
- uint8_t alpha_val(uint8_t fg, uint8_t bg, uint8_t alpha)
+static inline __attribute__ ((always_inline))
+uint8_t alpha_val(uint8_t fg, uint8_t bg, uint8_t alpha)
{
- unsigned int tmp;
+ unsigned int tmp;
- tmp = __vesacon_srgb_to_linear[fg] * alpha;
- tmp += __vesacon_srgb_to_linear[bg] * (255-alpha);
+ tmp = __vesacon_srgb_to_linear[fg] * alpha;
+ tmp += __vesacon_srgb_to_linear[bg] * (255 - alpha);
- return __vesacon_linear_to_srgb[tmp >> 12];
+ return __vesacon_linear_to_srgb[tmp >> 12];
}
static uint32_t alpha_pixel(uint32_t fg, uint32_t bg)
{
- uint8_t alpha = fg >> 24;
- uint8_t fg_r = fg >> 16;
- uint8_t fg_g = fg >> 8;
- uint8_t fg_b = fg;
- uint8_t bg_r = bg >> 16;
- uint8_t bg_g = bg >> 8;
- uint8_t bg_b = bg;
-
- return
- (alpha_val(fg_r, bg_r, alpha) << 16)|
- (alpha_val(fg_g, bg_g, alpha) << 8)|
- (alpha_val(fg_b, bg_b, alpha));
+ uint8_t alpha = fg >> 24;
+ uint8_t fg_r = fg >> 16;
+ uint8_t fg_g = fg >> 8;
+ uint8_t fg_b = fg;
+ uint8_t bg_r = bg >> 16;
+ uint8_t bg_g = bg >> 8;
+ uint8_t bg_b = bg;
+
+ return
+ (alpha_val(fg_r, bg_r, alpha) << 16) |
+ (alpha_val(fg_g, bg_g, alpha) << 8) | (alpha_val(fg_b, bg_b, alpha));
}
static void vesacon_update_characters(int row, int col, int nrows, int ncols)
{
- const int height = __vesacon_font_height;
- const int width = FONT_WIDTH;
- uint32_t *bgrowptr, *bgptr, bgval, fgval;
- uint32_t fgcolor = 0, bgcolor = 0, color;
- uint8_t chbits = 0, chxbits = 0, chsbits = 0;
- int i, j, jx, pixrow, pixsrow;
- struct vesa_char *rowptr, *rowsptr, *cptr, *csptr;
- unsigned int bytes_per_pixel = __vesacon_bytes_per_pixel;
- unsigned long pixel_offset;
- uint32_t row_buffer[VIDEO_X_SIZE], *rowbufptr;
- size_t fbrowptr;
- uint8_t sha;
-
- bgrowptr = &__vesacon_background[row*height+VIDEO_BORDER][col*width+VIDEO_BORDER];
-
- pixel_offset = ((row*height+VIDEO_BORDER)*VIDEO_X_SIZE)+
- (col*width+VIDEO_BORDER);
-
- fbrowptr = (row*height+VIDEO_BORDER) * __vesa_info.mi.logical_scan +
- (col*width+VIDEO_BORDER) * bytes_per_pixel;
-
- /* Note that we keep a 1-character guard area around the real text area... */
- rowptr = &__vesacon_text_display[(row+1)*(TEXT_PIXEL_COLS/FONT_WIDTH+2)+(col+1)];
- rowsptr = rowptr - ((TEXT_PIXEL_COLS/FONT_WIDTH+2)+1);
- pixrow = 0;
- pixsrow = height-1;
-
- for (i = height*nrows; i >= 0; i--) {
- bgptr = bgrowptr;
- rowbufptr = row_buffer;
-
- cptr = rowptr;
- csptr = rowsptr;
-
- chsbits = __vesacon_graphics_font[csptr->ch][pixsrow];
- if (__unlikely(csptr == cursor_pointer))
- chsbits |= cursor_pattern[pixsrow];
- sha = console_color_table[csptr->attr].shadow;
- chsbits &= (sha & 0x02) ? 0xff : 0x00;
- chsbits ^= (sha & 0x01) ? 0xff : 0x00;
- chsbits <<= (width-2);
- csptr++;
-
- /* Draw two pixels beyond the end of the line. One for the shadow,
- and one to make sure we have a whole dword of data for the copy
- operation at the end. Note that this code depends on the fact that
- all characters begin on dword boundaries in the frame buffer. */
-
- for (jx = 1, j = width*ncols+1; j >= 0; j--) {
- chbits <<= 1;
- chsbits <<= 1;
- chxbits <<= 1;
-
- switch (jx) {
- case 1:
- chbits = __vesacon_graphics_font[cptr->ch][pixrow];
- if (__unlikely(cptr == cursor_pointer))
- chbits |= cursor_pattern[pixrow];
- sha = console_color_table[cptr->attr].shadow;
- chxbits = chbits;
- chxbits &= (sha & 0x02) ? 0xff : 0x00;
- chxbits ^= (sha & 0x01) ? 0xff : 0x00;
- fgcolor = console_color_table[cptr->attr].argb_fg;
- bgcolor = console_color_table[cptr->attr].argb_bg;
- cptr++;
- jx--;
- break;
- case 0:
+ const int height = __vesacon_font_height;
+ const int width = FONT_WIDTH;
+ uint32_t *bgrowptr, *bgptr, bgval, fgval;
+ uint32_t fgcolor = 0, bgcolor = 0, color;
+ uint8_t chbits = 0, chxbits = 0, chsbits = 0;
+ int i, j, jx, pixrow, pixsrow;
+ struct vesa_char *rowptr, *rowsptr, *cptr, *csptr;
+ unsigned int bytes_per_pixel = __vesacon_bytes_per_pixel;
+ unsigned long pixel_offset;
+ uint32_t row_buffer[VIDEO_X_SIZE], *rowbufptr;
+ size_t fbrowptr;
+ uint8_t sha;
+
+ bgrowptr =
+ &__vesacon_background[row * height + VIDEO_BORDER][col * width +
+ VIDEO_BORDER];
+
+ pixel_offset = ((row * height + VIDEO_BORDER) * VIDEO_X_SIZE) +
+ (col * width + VIDEO_BORDER);
+
+ fbrowptr = (row * height + VIDEO_BORDER) * __vesa_info.mi.logical_scan +
+ (col * width + VIDEO_BORDER) * bytes_per_pixel;
+
+ /* Note that we keep a 1-character guard area around the real text area... */
+ rowptr =
+ &__vesacon_text_display[(row + 1) * (TEXT_PIXEL_COLS / FONT_WIDTH + 2) +
+ (col + 1)];
+ rowsptr = rowptr - ((TEXT_PIXEL_COLS / FONT_WIDTH + 2) + 1);
+ pixrow = 0;
+ pixsrow = height - 1;
+
+ for (i = height * nrows; i >= 0; i--) {
+ bgptr = bgrowptr;
+ rowbufptr = row_buffer;
+
+ cptr = rowptr;
+ csptr = rowsptr;
+
chsbits = __vesacon_graphics_font[csptr->ch][pixsrow];
if (__unlikely(csptr == cursor_pointer))
- chsbits |= cursor_pattern[pixsrow];
+ chsbits |= cursor_pattern[pixsrow];
sha = console_color_table[csptr->attr].shadow;
chsbits &= (sha & 0x02) ? 0xff : 0x00;
chsbits ^= (sha & 0x01) ? 0xff : 0x00;
+ chsbits <<= (width - 2);
csptr++;
- jx = width-1;
- break;
- default:
- jx--;
- break;
- }
-
- /* If this pixel is raised, use the offsetted value */
- bgval = (chxbits & 0x80) ? bgptr[VIDEO_X_SIZE+1] : *bgptr;
- bgptr++;
-
- /* If this pixel is set, use the fg color, else the bg color */
- fgval = (chbits & 0x80) ? fgcolor : bgcolor;
-
- /* Produce the combined color pixel value */
- color = alpha_pixel(fgval, bgval);
-
- /* Apply the shadow (75% shadow) */
- if ((chsbits & ~chxbits) & 0x80) {
- color >>= 2;
- color &= 0x3f3f3f;
- }
-
- *rowbufptr++ = color;
- }
-
- /* Copy to frame buffer */
- __vesacon_copy_to_screen(fbrowptr, row_buffer, rowbufptr-row_buffer);
-
- bgrowptr += VIDEO_X_SIZE;
- fbrowptr += __vesa_info.mi.logical_scan;
- if (++pixrow == height) {
- rowptr += TEXT_PIXEL_COLS/FONT_WIDTH+2;
- pixrow = 0;
+ /* Draw two pixels beyond the end of the line. One for the shadow,
+ and one to make sure we have a whole dword of data for the copy
+ operation at the end. Note that this code depends on the fact that
+ all characters begin on dword boundaries in the frame buffer. */
+
+ for (jx = 1, j = width * ncols + 1; j >= 0; j--) {
+ chbits <<= 1;
+ chsbits <<= 1;
+ chxbits <<= 1;
+
+ switch (jx) {
+ case 1:
+ chbits = __vesacon_graphics_font[cptr->ch][pixrow];
+ if (__unlikely(cptr == cursor_pointer))
+ chbits |= cursor_pattern[pixrow];
+ sha = console_color_table[cptr->attr].shadow;
+ chxbits = chbits;
+ chxbits &= (sha & 0x02) ? 0xff : 0x00;
+ chxbits ^= (sha & 0x01) ? 0xff : 0x00;
+ fgcolor = console_color_table[cptr->attr].argb_fg;
+ bgcolor = console_color_table[cptr->attr].argb_bg;
+ cptr++;
+ jx--;
+ break;
+ case 0:
+ chsbits = __vesacon_graphics_font[csptr->ch][pixsrow];
+ if (__unlikely(csptr == cursor_pointer))
+ chsbits |= cursor_pattern[pixsrow];
+ sha = console_color_table[csptr->attr].shadow;
+ chsbits &= (sha & 0x02) ? 0xff : 0x00;
+ chsbits ^= (sha & 0x01) ? 0xff : 0x00;
+ csptr++;
+ jx = width - 1;
+ break;
+ default:
+ jx--;
+ break;
+ }
+
+ /* If this pixel is raised, use the offsetted value */
+ bgval = (chxbits & 0x80) ? bgptr[VIDEO_X_SIZE + 1] : *bgptr;
+ bgptr++;
+
+ /* If this pixel is set, use the fg color, else the bg color */
+ fgval = (chbits & 0x80) ? fgcolor : bgcolor;
+
+ /* Produce the combined color pixel value */
+ color = alpha_pixel(fgval, bgval);
+
+ /* Apply the shadow (75% shadow) */
+ if ((chsbits & ~chxbits) & 0x80) {
+ color >>= 2;
+ color &= 0x3f3f3f;
+ }
+
+ *rowbufptr++ = color;
+ }
+
+ /* Copy to frame buffer */
+ __vesacon_copy_to_screen(fbrowptr, row_buffer, rowbufptr - row_buffer);
+
+ bgrowptr += VIDEO_X_SIZE;
+ fbrowptr += __vesa_info.mi.logical_scan;
+
+ if (++pixrow == height) {
+ rowptr += TEXT_PIXEL_COLS / FONT_WIDTH + 2;
+ pixrow = 0;
+ }
+ if (++pixsrow == height) {
+ rowsptr += TEXT_PIXEL_COLS / FONT_WIDTH + 2;
+ pixsrow = 0;
+ }
}
- if (++pixsrow == height) {
- rowsptr += TEXT_PIXEL_COLS/FONT_WIDTH+2;
- pixsrow = 0;
- }
- }
}
/* Bounding box for changed text. The (x1, y1) coordinates are +1! */
/* Update the range already touched by various variables */
void __vesacon_doit(void)
{
- if (upd_x1 > upd_x0 && upd_y1 > upd_y0) {
- vesacon_update_characters(upd_y0, upd_x0, upd_y1-upd_y0, upd_x1-upd_x0);
- upd_x0 = upd_y0 = -1U;
- upd_x1 = upd_y1 = 0;
- }
+ if (upd_x1 > upd_x0 && upd_y1 > upd_y0) {
+ vesacon_update_characters(upd_y0, upd_x0, upd_y1 - upd_y0,
+ upd_x1 - upd_x0);
+ upd_x0 = upd_y0 = -1U;
+ upd_x1 = upd_y1 = 0;
+ }
}
/* Mark a range for update; note argument sequence is the same as
vesacon_update_characters() */
static inline void vesacon_touch(int row, int col, int rows, int cols)
{
- unsigned int y0 = row;
- unsigned int x0 = col;
- unsigned int y1 = y0+rows;
- unsigned int x1 = x0+cols;
-
- if (y0 < upd_y0)
- upd_y0 = y0;
- if (y1 > upd_y1)
- upd_y1 = y1;
- if (x0 < upd_x0)
- upd_x0 = x0;
- if (x1 > upd_x1)
- upd_x1 = x1;
+ unsigned int y0 = row;
+ unsigned int x0 = col;
+ unsigned int y1 = y0 + rows;
+ unsigned int x1 = x0 + cols;
+
+ if (y0 < upd_y0)
+ upd_y0 = y0;
+ if (y1 > upd_y1)
+ upd_y1 = y1;
+ if (x0 < upd_x0)
+ upd_x0 = x0;
+ if (x1 > upd_x1)
+ upd_x1 = x1;
}
/* Erase a region of the screen */
void __vesacon_erase(int x0, int y0, int x1, int y1, attr_t attr)
{
- int y;
- struct vesa_char *ptr = &__vesacon_text_display
- [(y0+1)*(TEXT_PIXEL_COLS/FONT_WIDTH+2)+(x0+1)];
- struct vesa_char fill = {
- .ch = ' ',
- .attr = attr,
- };
- int ncols = x1-x0+1;
-
- for (y = y0; y <= y1; y++) {
- vesacon_fill(ptr, fill, ncols);
- ptr += TEXT_PIXEL_COLS/FONT_WIDTH+2;
- }
-
- vesacon_touch(y0, x0, y1-y0+1, ncols);
+ int y;
+ struct vesa_char *ptr = &__vesacon_text_display
+ [(y0 + 1) * (TEXT_PIXEL_COLS / FONT_WIDTH + 2) + (x0 + 1)];
+ struct vesa_char fill = {
+ .ch = ' ',
+ .attr = attr,
+ };
+ int ncols = x1 - x0 + 1;
+
+ for (y = y0; y <= y1; y++) {
+ vesacon_fill(ptr, fill, ncols);
+ ptr += TEXT_PIXEL_COLS / FONT_WIDTH + 2;
+ }
+
+ vesacon_touch(y0, x0, y1 - y0 + 1, ncols);
}
/* Scroll the screen up */
void __vesacon_scroll_up(int nrows, attr_t attr)
{
- struct vesa_char *fromptr = &__vesacon_text_display
- [(nrows+1)*(TEXT_PIXEL_COLS/FONT_WIDTH+2)];
- struct vesa_char *toptr = &__vesacon_text_display
- [(TEXT_PIXEL_COLS/FONT_WIDTH+2)];
- int dword_count = (__vesacon_text_rows-nrows)*(TEXT_PIXEL_COLS/FONT_WIDTH+2);
- struct vesa_char fill = {
- .ch = ' ',
- .attr = attr,
- };
+ struct vesa_char *fromptr = &__vesacon_text_display
+ [(nrows + 1) * (TEXT_PIXEL_COLS / FONT_WIDTH + 2)];
+ struct vesa_char *toptr = &__vesacon_text_display
+ [(TEXT_PIXEL_COLS / FONT_WIDTH + 2)];
+ int dword_count =
+ (__vesacon_text_rows - nrows) * (TEXT_PIXEL_COLS / FONT_WIDTH + 2);
+ struct vesa_char fill = {
+ .ch = ' ',
+ .attr = attr,
+ };
- toptr = copy_dword(toptr, fromptr, dword_count);
+ toptr = copy_dword(toptr, fromptr, dword_count);
- dword_count = nrows*(TEXT_PIXEL_COLS/FONT_WIDTH+2);
+ dword_count = nrows * (TEXT_PIXEL_COLS / FONT_WIDTH + 2);
- vesacon_fill(toptr, fill, dword_count);
+ vesacon_fill(toptr, fill, dword_count);
- vesacon_touch(0, 0, __vesacon_text_rows, TEXT_PIXEL_COLS/FONT_WIDTH);
+ vesacon_touch(0, 0, __vesacon_text_rows, TEXT_PIXEL_COLS / FONT_WIDTH);
}
/* Draw one character text at a specific area of the screen */
void __vesacon_write_char(int x, int y, uint8_t ch, attr_t attr)
{
- struct vesa_char *ptr = &__vesacon_text_display
- [(y+1)*(TEXT_PIXEL_COLS/FONT_WIDTH+2)+(x+1)];
+ struct vesa_char *ptr = &__vesacon_text_display
+ [(y + 1) * (TEXT_PIXEL_COLS / FONT_WIDTH + 2) + (x + 1)];
- ptr->ch = ch;
- ptr->attr = attr;
+ ptr->ch = ch;
+ ptr->attr = attr;
- vesacon_touch(y, x, 1, 1);
+ vesacon_touch(y, x, 1, 1);
}
void __vesacon_set_cursor(int x, int y, int visible)
{
- struct vesa_char *ptr = &__vesacon_text_display
- [(y+1)*(TEXT_PIXEL_COLS/FONT_WIDTH+2)+(x+1)];
-
- if (cursor_pointer)
- vesacon_touch(cursor_y, cursor_x, 1, 1);
-
- if (!visible) {
- /* Invisible cursor */
- cursor_pointer = NULL;
- } else {
- cursor_pointer = ptr;
- vesacon_touch(y, x, 1, 1);
- }
+ struct vesa_char *ptr = &__vesacon_text_display
+ [(y + 1) * (TEXT_PIXEL_COLS / FONT_WIDTH + 2) + (x + 1)];
+
+ if (cursor_pointer)
+ vesacon_touch(cursor_y, cursor_x, 1, 1);
+
+ if (!visible) {
+ /* Invisible cursor */
+ cursor_pointer = NULL;
+ } else {
+ cursor_pointer = ptr;
+ vesacon_touch(y, x, 1, 1);
+ }
- cursor_x = x;
- cursor_y = y;
+ cursor_x = x;
+ cursor_y = y;
}
void __vesacon_init_cursor(int font_height)
{
- int r0 = font_height - (font_height < 10 ? 2 : 3);
+ int r0 = font_height - (font_height < 10 ? 2 : 3);
- if (r0 < 0)
- r0 = 0;
+ if (r0 < 0)
+ r0 = 0;
- /* cursor_pattern is assumed to be all zero */
- cursor_pattern[r0] = 0xff;
- cursor_pattern[r0+1] = 0xff;
+ /* cursor_pattern is assumed to be all zero */
+ cursor_pattern[r0] = 0xff;
+ cursor_pattern[r0 + 1] = 0xff;
}
void __vesacon_redraw_text(void)
{
- vesacon_update_characters(0, 0, __vesacon_text_rows,
- TEXT_PIXEL_COLS/FONT_WIDTH);
+ vesacon_update_characters(0, 0, __vesacon_text_rows,
+ TEXT_PIXEL_COLS / FONT_WIDTH);
}
projects / platform / upstream / syslinux.git / commitdiff