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/* |
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* $Id: fb_include.c,v 1.2 2005/11/30 21:20:42 debug Exp $ |
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* |
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* Included from dev_fb.c. |
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* |
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* FB_SCALEDOWN should be defined if d->vfb_scaledown > 1. |
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* FB_BO for d->fb_window->fb_ximage->byte_order non-zero |
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* FB_24 for 24-bit X11 color. |
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* FB_16 for 16-bit X11 color. |
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* FB_15 for 15-bit X11 color. |
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* (Default is to fallback to grayscale.) |
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*/ |
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|
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|
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#ifdef macro_put_pixel1 |
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#undef macro_put_pixel1 |
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#endif |
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|
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/* Combine the color into an X11 long and display it: */ \ |
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/* TODO: construct color in a more portable way: */ \ |
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|
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#ifdef FB_24 |
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#ifdef FB_BO |
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#define macro_put_pixel1 color = (b << 16) + (g << 8) + r |
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#else |
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#define macro_put_pixel1 color = (r << 16) + (g << 8) + b |
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#endif |
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|
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#else /* !24 */ |
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#ifdef FB_16 |
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#ifdef FB_BO |
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#define macro_put_pixel1 color = ((b >> 3) << 11) + ((g >> 2) << 5) + (r >> 3) |
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#else |
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#define macro_put_pixel1 color = ((r >> 3) << 11) + ((g >> 2) << 5) + (b >> 3) |
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#endif |
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|
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#else /* !16 */ |
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#ifdef FB_15 |
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#ifdef FB_BO |
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#define macro_put_pixel1 color = ((b >> 3) << 10) + ((g >> 3) << 5) + (r >> 3) |
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#else |
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#define macro_put_pixel1 color = ((r >> 3) << 10) + ((g >> 3) << 5) + (b >> 3) |
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#endif |
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|
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#else /* !15 */ |
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#define macro_put_pixel1 color = d->fb_window->x11_graycolor[15 * \ |
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(r + g + b) / (255 * 3)].pixel |
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|
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#endif /* !15 */ |
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|
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#endif /* !16 */ |
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|
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#endif /* !24 */ |
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|
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|
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#ifdef macro_put_pixel |
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#undef macro_put_pixel |
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#endif |
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|
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#define macro_put_pixel macro_put_pixel1; \ |
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if (x>=0 && x<d->x11_xsize && y>=0 && y<d->x11_ysize) \ |
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XPutPixel(d->fb_window->fb_ximage, x, y, color); \ |
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|
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|
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void REDRAW(struct vfb_data *d, int addr, int len) |
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{ |
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int x, y, pixel, npixels; |
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long color_r, color_g, color_b; |
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long color; |
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|
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#ifndef FB_SCALEDOWN |
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|
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/* Which framebuffer pixel does addr correspond to? */ |
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pixel = addr * 8 / d->bit_depth; |
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y = pixel / d->xsize; |
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x = pixel % d->xsize; |
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|
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/* How many framebuffer pixels? */ |
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npixels = len * 8 / d->bit_depth; |
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if (npixels == 0) |
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npixels = 1; |
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|
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if (d->bit_depth < 8) { |
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for (pixel=0; pixel<npixels; pixel++) { |
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int fb_addr, c, r, g, b; |
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color_r = color_g = color_b = 0; |
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|
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fb_addr = (y * d->xsize + x) * d->bit_depth; |
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/* fb_addr is now which _bit_ in |
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the framebuffer */ |
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|
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c = d->framebuffer[fb_addr >> 3]; |
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fb_addr &= 7; |
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|
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/* HPC is reverse: */ |
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if (d->vfb_type == VFB_HPC) |
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fb_addr = 8 - d->bit_depth - fb_addr; |
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|
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c = (c >> fb_addr) & ((1<<d->bit_depth) - 1); |
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/* c <<= (8 - d->bit_depth); */ |
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|
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r = d->rgb_palette[c*3 + 0]; |
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g = d->rgb_palette[c*3 + 1]; |
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b = d->rgb_palette[c*3 + 2]; |
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|
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macro_put_pixel; |
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x++; |
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} |
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} else if (d->bit_depth == 8) { |
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for (pixel=0; pixel<npixels; pixel++) { |
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int fb_addr, c, r, g, b; |
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color_r = color_g = color_b = 0; |
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|
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fb_addr = y * d->xsize + x; |
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/* fb_addr is now which byte in framebuffer */ |
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c = d->framebuffer[fb_addr]; |
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r = d->rgb_palette[c*3 + 0]; |
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g = d->rgb_palette[c*3 + 1]; |
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b = d->rgb_palette[c*3 + 2]; |
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|
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macro_put_pixel; |
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x++; |
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} |
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} else { /* d->bit_depth > 8 */ |
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for (pixel=0; pixel<npixels; pixel++) { |
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int fb_addr, r, g, b; |
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color_r = color_g = color_b = 0; |
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|
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fb_addr = (y * d->xsize + x) * d->bit_depth; |
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/* fb_addr is now which byte in framebuffer */ |
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|
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/* > 8 bits color. */ |
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fb_addr >>= 3; |
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switch (d->bit_depth) { |
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case 24: |
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r = d->framebuffer[fb_addr]; |
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g = d->framebuffer[fb_addr + 1]; |
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b = d->framebuffer[fb_addr + 2]; |
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break; |
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/* TODO: copy to the scaledown code below */ |
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case 16: |
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if (d->vfb_type == VFB_HPC) { |
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b = d->framebuffer[fb_addr] + |
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(d->framebuffer[fb_addr+1] << 8); |
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|
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if (d->color32k) { |
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r = b >> 11; |
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g = b >> 5; |
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r = r & 31; |
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g = (g & 31) * 2; |
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b = b & 31; |
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} else if (d->psp_15bit) { |
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int tmp; |
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r = (b >> 10) & 0x1f; |
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g = (b >> 5) & 0x1f; |
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b = b & 0x1f; |
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g <<= 1; |
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tmp = r; r = b; b = tmp; |
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} else { |
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r = (b >> 11) & 0x1f; |
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g = (b >> 5) & 0x3f; |
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b = b & 0x1f; |
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} |
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} else { |
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r = d->framebuffer[fb_addr] >> 3; |
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/* HUH? TODO: */ |
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g = (d->framebuffer[fb_addr] << 5) + |
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(d->framebuffer[fb_addr + 1] >>5); |
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b = d->framebuffer[fb_addr + 1]&31; |
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} |
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|
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r *= 8; |
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g *= 4; |
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b *= 8; |
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break; |
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default: |
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r = g = b = random() & 255; |
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} |
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|
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macro_put_pixel; |
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x++; |
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} |
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} |
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|
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#else /* FB_SCALEDOWN */ |
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|
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/* scaledown > 1: */ |
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int scaledown = d->vfb_scaledown; |
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int scaledownXscaledown = scaledown * scaledown; |
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|
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/* Which framebuffer pixel does addr correspond to? */ |
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pixel = addr * 8 / d->bit_depth; |
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y = pixel / d->xsize; |
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x = pixel % d->xsize; |
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|
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/* How many framebuffer pixels? */ |
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npixels = len * 8 / d->bit_depth; |
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|
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/* Which x11 pixel? */ |
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x /= scaledown; |
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y /= scaledown; |
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|
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/* How many x11 pixels: */ |
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npixels /= scaledown; |
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if (npixels == 0) |
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npixels = 1; |
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|
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if (d->bit_depth < 8) { |
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for (pixel=0; pixel<npixels; pixel++) { |
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int subx, suby, r, g, b; |
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color_r = color_g = color_b = 0; |
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for (suby=0; suby<scaledown; suby++) |
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for (subx=0; subx<scaledown; subx++) { |
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int fb_x, fb_y, fb_addr, c; |
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|
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fb_x = x * scaledown + subx; |
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fb_y = y * scaledown + suby; |
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fb_addr = fb_y * d->xsize + fb_x; |
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fb_addr = fb_addr * d->bit_depth; |
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/* fb_addr is now which _bit_ in |
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the framebuffer */ |
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|
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c = d->framebuffer[fb_addr >> 3]; |
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fb_addr &= 7; |
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|
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/* HPC is reverse: */ |
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if (d->vfb_type == VFB_HPC) |
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fb_addr = 8 - d->bit_depth - fb_addr; |
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|
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c = (c >> fb_addr) & ((1<<d->bit_depth) - 1); |
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/* c <<= (8 - d->bit_depth); */ |
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|
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r = d->rgb_palette[c*3 + 0]; |
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g = d->rgb_palette[c*3 + 1]; |
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b = d->rgb_palette[c*3 + 2]; |
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|
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color_r += r; |
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color_g += g; |
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color_b += b; |
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} |
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|
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r = color_r / scaledownXscaledown; |
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g = color_g / scaledownXscaledown; |
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b = color_b / scaledownXscaledown; |
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macro_put_pixel; |
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x++; |
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} |
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} else if (d->bit_depth == 8) { |
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for (pixel=0; pixel<npixels; pixel++) { |
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int subx, suby, r, g, b; |
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color_r = color_g = color_b = 0; |
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for (suby=0; suby<scaledown; suby++) |
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for (subx=0; subx<scaledown; subx++) { |
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int fb_x, fb_y, fb_addr, c; |
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|
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fb_x = x * scaledown + subx; |
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fb_y = y * scaledown + suby; |
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fb_addr = fb_y * d->xsize + fb_x; |
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/* fb_addr is which _byte_ in framebuffer */ |
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c = d->framebuffer[fb_addr] * 3; |
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r = d->rgb_palette[c + 0]; |
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g = d->rgb_palette[c + 1]; |
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b = d->rgb_palette[c + 2]; |
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color_r += r; |
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color_g += g; |
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color_b += b; |
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} |
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|
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r = color_r / scaledownXscaledown; |
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g = color_g / scaledownXscaledown; |
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b = color_b / scaledownXscaledown; |
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macro_put_pixel; |
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x++; |
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} |
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} else { |
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/* Generic > 8 bit bit-depth: */ |
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for (pixel=0; pixel<npixels; pixel++) { |
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int subx, suby, r, g, b; |
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color_r = color_g = color_b = 0; |
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for (suby=0; suby<scaledown; suby++) |
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for (subx=0; subx<scaledown; subx++) { |
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int fb_x, fb_y, fb_addr; |
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|
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fb_x = x * scaledown + subx; |
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fb_y = y * scaledown + suby; |
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fb_addr = fb_y * d->xsize + fb_x; |
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fb_addr = (fb_addr * d->bit_depth) >> 3; |
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/* fb_addr is which _byte_ in framebuffer */ |
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|
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/* > 8 bits color. */ |
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switch (d->bit_depth) { |
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case 24: |
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r = d->framebuffer[fb_addr]; |
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g = d->framebuffer[fb_addr + 1]; |
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b = d->framebuffer[fb_addr + 2]; |
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break; |
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default: |
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r = g = b = random() & 255; |
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} |
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color_r += r; |
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color_g += g; |
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color_b += b; |
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} |
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r = color_r / scaledownXscaledown; |
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g = color_g / scaledownXscaledown; |
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b = color_b / scaledownXscaledown; |
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macro_put_pixel; |
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x++; |
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} |
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} |
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#endif /* FB_SCALEDOWN */ |
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} |
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