diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/vga.c | 113 |
1 files changed, 86 insertions, 27 deletions
@@ -1223,6 +1223,35 @@ static const uint8_t cursor_glyph[32 * 4] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, }; +static void vga_get_text_resolution(VGAState *s, int *pwidth, int *pheight, + int *pcwidth, int *pcheight) +{ + int width, cwidth, height, cheight; + + /* total width & height */ + cheight = (s->cr[9] & 0x1f) + 1; + cwidth = 8; + if (!(s->sr[1] & 0x01)) + cwidth = 9; + if (s->sr[1] & 0x08) + cwidth = 16; /* NOTE: no 18 pixel wide */ + width = (s->cr[0x01] + 1); + if (s->cr[0x06] == 100) { + /* ugly hack for CGA 160x100x16 - explain me the logic */ + height = 100; + } else { + height = s->cr[0x12] | + ((s->cr[0x07] & 0x02) << 7) | + ((s->cr[0x07] & 0x40) << 3); + height = (height + 1) / cheight; + } + + *pwidth = width; + *pheight = height; + *pcwidth = cwidth; + *pcheight = cheight; +} + /* * Text mode update * Missing: @@ -1275,24 +1304,8 @@ static void vga_draw_text(VGAState *s, int full_update) line_offset = s->line_offset; s1 = s->vram_ptr + (s->start_addr * 4); - /* total width & height */ - cheight = (s->cr[9] & 0x1f) + 1; - cw = 8; - if (!(s->sr[1] & 0x01)) - cw = 9; - if (s->sr[1] & 0x08) - cw = 16; /* NOTE: no 18 pixel wide */ + vga_get_text_resolution(s, &width, &height, &cw, &cheight); x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3); - width = (s->cr[0x01] + 1); - if (s->cr[0x06] == 100) { - /* ugly hack for CGA 160x100x16 - explain me the logic */ - height = 100; - } else { - height = s->cr[0x12] | - ((s->cr[0x07] & 0x02) << 7) | - ((s->cr[0x07] & 0x40) << 3); - height = (height + 1) / cheight; - } if ((height * width) > CH_ATTR_SIZE) { /* better than nothing: exit if transient size is too big */ return; @@ -2542,11 +2555,29 @@ int ppm_save(const char *filename, uint8_t *data, return 0; } -/* save the vga display in a PPM image even if no display is - available */ -static void vga_screen_dump(void *opaque, const char *filename) +static void vga_screen_dump_blank(VGAState *s, const char *filename) +{ + FILE *f; + unsigned int y, x, w, h; + + w = s->last_scr_width * sizeof(uint32_t); + h = s->last_scr_height; + + f = fopen(filename, "wb"); + if (!f) + return; + fprintf(f, "P6\n%d %d\n%d\n", w, h, 255); + for (y = 0; y < h; y++) { + for (x = 0; x < w; x++) { + fputc(0, f); + } + } + fclose(f); +} + +static void vga_screen_dump_common(VGAState *s, const char *filename, + int w, int h) { - VGAState *s = (VGAState *)opaque; DisplayState *saved_ds, ds1, *ds = &ds1; /* XXX: this is a little hackish */ @@ -2559,14 +2590,42 @@ static void vga_screen_dump(void *opaque, const char *filename) ds->dpy_refresh = vga_save_dpy_refresh; ds->depth = 32; + ds->linesize = w * sizeof(uint32_t); + ds->data = qemu_mallocz(h * ds->linesize); s->ds = ds; s->graphic_mode = -1; vga_update_display(s); - - if (ds_get_data(ds)) { - ppm_save(filename, ds_get_data(ds), vga_save_w, vga_save_h, - ds_get_linesize(s->ds)); - qemu_free(ds_get_data(ds)); - } + ppm_save(filename, ds->data, w, h, ds->linesize); + qemu_free(ds->data); s->ds = saved_ds; } + +static void vga_screen_dump_graphic(VGAState *s, const char *filename) +{ + int w, h; + + s->get_resolution(s, &w, &h); + vga_screen_dump_common(s, filename, w, h); +} + +static void vga_screen_dump_text(VGAState *s, const char *filename) +{ + int w, h, cwidth, cheight; + + vga_get_text_resolution(s, &w, &h, &cwidth, &cheight); + vga_screen_dump_common(s, filename, w * cwidth, h * cheight); +} + +/* save the vga display in a PPM image even if no display is + available */ +static void vga_screen_dump(void *opaque, const char *filename) +{ + VGAState *s = (VGAState *)opaque; + + if (!(s->ar_index & 0x20)) + vga_screen_dump_blank(s, filename); + else if (s->gr[6] & 1) + vga_screen_dump_graphic(s, filename); + else + vga_screen_dump_text(s, filename); +} |