dev/fb/splash_bmp.c

89     video_info_t 	info;
97 	if ((vidd_get_info(adp, modes[i], &info) == 0) &&
98 	    (bmp_Init((u_char *)bmp_decoder.data, info.vi_width,
99 		      info.vi_height, info.vi_depth) == 0))
252 ** Given (info), set the pixel at (x),(y) to (val)
256 bmp_SetPix(BMP_INFO *info, int x, int y, u_char val)
264     if ((x < 0) || (x >= info->swidth) || (y < 0) || (y >= info->sheight))
271     sofs = ((info->height - (y+1) + (info->sheight - info->height) / 2)
272 		* info->adp->va_line_width);
273     x += (info->swidth - info->width) / 2;
275     switch(info->sdepth) {
282 	if (val != info->prev_val) {
288 	    info->prev_val = val;
291 	*(info->vidmem+sofs) = (0x80 >> bofs);	/* write new bit */
299 	newbank = sofs/info->adp->va_window_size;
300 	if (info->bank != newbank) {
301 	    vidd_set_win_org(info->adp, newbank*info->adp->va_window_size);
302 	    info->bank = newbank;
304 	sofs %= info->adp->va_window_size;
308 	*(info->vidmem + sofs) ^= 0xff;		/* read-modify-write */
314 	newbank = sofs/info->adp->va_window_size;
315 	if (info->bank != newbank) {
316 	    vidd_set_win_org(info->adp, newbank*info->adp->va_window_size);
317 	    info->bank = newbank;
319 	sofs %= info->adp->va_window_size;
320 	*(info->vidmem+sofs) = val;
332 bmp_DecodeRLE4(BMP_INFO *info, int line)
347 	if (*info->index) {
348 	    for (count = 0; count < *info->index; count++, x++) {
350 		    bmp_SetPix(info, x, y, *(info->index+1) & 0x0f);
352 		    bmp_SetPix(info, x, y, (*(info->index+1) >>4) & 0x0f);
355 	    info->index += 2;
361 	    switch (*(info->index+1)) {
363 		info->index += 2;
366 		info->index = NULL;
369 		x += *(info->index + 2);	/* new coords */
370 		y += *(info->index + 3);
371 		info->index += 4;
374 		for (count = 0; count < *(info->index + 1); count++, x++) {
375 		    val = *(info->index + 2 + (count / 2));	/* byte with nybbles */
381 		    bmp_SetPix(info, x, y, val);
384 		info->index += 2 + ((count + 3) / 4) * 2;
397 bmp_DecodeRLE8(BMP_INFO *info, int line)
411 	if (*info->index) {
412 	    for (count = 0; count < *info->index; count++, x++)
413 		bmp_SetPix(info, x, y, *(info->index+1));
414 	    info->index += 2;
420 	    switch(*(info->index+1)) {
422 		info->index += 2;
425 		info->index = NULL;
428 		x += *(info->index + 2);	/* new coords */
429 		y += *(info->index + 3);
430 		info->index += 4;
433 		for (count = 0; count < *(info->index + 1); count++, x++)
434 		    bmp_SetPix(info, x, y, *(info->index + 2 + count));
436 		info->index += 2 + count + (count & 1);
446 ** Given (info) pointing to an image being decoded, (line) being the line currently
450 bmp_DecodeLine(BMP_INFO *info, int line)
455     switch(info->format) {
457     	switch(info->depth) {
459 	    for (x = 0; x < info->width; x++, info->index++)
460 		bmp_SetPix(info, x, line, *info->index);
461 	    info->index += 3 - (--x % 4);
464 	    p = info->index;
465 	    for (x = 0; x < info->width; x++) {
472 		bmp_SetPix(info, x, line, val);
475 	    info->index += ((x + 7) / 8) * 4;
478 	    p = info->index;
480 	    for (x = 0; x < info->width; x++) {
487 		bmp_SetPix(info, x, line, val);
490 	    info->index += ((x + 31) / 32) * 4;
495 	bmp_DecodeRLE4(info, line);
498 	bmp_DecodeRLE8(info, line);
608     /* initialise the info structure for drawing */