1537078d8f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
274 lines
6.7 KiB
C
274 lines
6.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1999 Michael Smith <msmith@freebsd.org>
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* Copyright (c) 1999 Kazutaka YOKOTA <yokota@freebsd.org>
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* Copyright (c) 1999 Dag-Erling Coïdan Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/linker.h>
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#include <sys/module.h>
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#include <sys/fbio.h>
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#include <dev/fb/fbreg.h>
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#include <dev/fb/splashreg.h>
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static int splash_mode = -1;
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static int splash_on = FALSE;
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static int pcx_start(video_adapter_t *adp);
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static int pcx_end(video_adapter_t *adp);
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static int pcx_splash(video_adapter_t *adp, int on);
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static int pcx_init(void *data, int sdepth);
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static int pcx_draw(video_adapter_t *adp);
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static splash_decoder_t pcx_decoder = {
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.name = "splash_pcx",
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.init = pcx_start,
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.term = pcx_end,
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.splash = pcx_splash,
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.data_type = SPLASH_IMAGE,
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};
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SPLASH_DECODER(splash_pcx, pcx_decoder);
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static struct {
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int width;
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int height;
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int bpsl;
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int bpp;
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int planes;
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int zlen;
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const uint8_t *zdata;
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uint8_t *palette;
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} pcx_info;
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static int
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pcx_start(video_adapter_t *adp)
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{
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static int modes[] = {
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M_VGA_CG320,
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M_VESA_CG640x480,
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M_VESA_CG800x600,
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M_VESA_CG1024x768,
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-1,
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};
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video_info_t info;
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int i;
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if (pcx_decoder.data == NULL ||
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pcx_decoder.data_size <= 0 ||
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pcx_init(pcx_decoder.data, pcx_decoder.data_size))
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return (ENODEV);
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if (bootverbose)
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printf("splash_pcx: image good:\n"
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" width = %d\n"
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" height = %d\n"
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" depth = %d\n"
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" planes = %d\n",
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pcx_info.width, pcx_info.height,
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pcx_info.bpp, pcx_info.planes);
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for (i = 0; modes[i] >= 0; ++i) {
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if (vidd_get_info(adp, modes[i], &info) != 0)
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continue;
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if (bootverbose)
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printf("splash_pcx: considering mode %d:\n"
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" vi_width = %d\n"
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" vi_height = %d\n"
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" vi_depth = %d\n"
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" vi_planes = %d\n",
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modes[i],
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info.vi_width, info.vi_height,
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info.vi_depth, info.vi_planes);
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if (info.vi_width >= pcx_info.width
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&& info.vi_height >= pcx_info.height
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&& info.vi_depth == pcx_info.bpp
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&& info.vi_planes == pcx_info.planes)
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break;
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}
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splash_mode = modes[i];
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if (splash_mode == -1)
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return (ENODEV);
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if (bootverbose)
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printf("splash_pcx: selecting mode %d\n", splash_mode);
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return (0);
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}
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static int
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pcx_end(video_adapter_t *adp)
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{
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/* nothing to do */
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return (0);
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}
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static int
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pcx_splash(video_adapter_t *adp, int on)
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{
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if (on) {
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if (!splash_on) {
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if (vidd_set_mode(adp, splash_mode) || pcx_draw(adp))
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return 1;
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splash_on = TRUE;
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}
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return (0);
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} else {
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splash_on = FALSE;
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return (0);
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}
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}
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struct pcx_header {
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uint8_t manufactor;
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uint8_t version;
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uint8_t encoding;
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uint8_t bpp;
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uint16_t xmin;
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uint16_t ymin;
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uint16_t xmax;
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uint16_t ymax;
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uint16_t hres;
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uint16_t vres;
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uint8_t colormap[48];
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uint8_t rsvd;
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uint8_t nplanes;
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uint16_t bpsl;
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uint16_t palinfo;
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uint16_t hsize;
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uint16_t vsize;
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};
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#define MAXSCANLINE 1024
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static int
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pcx_init(void *data, int size)
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{
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const struct pcx_header *hdr = data;
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if (size < 128 + 1 + 1 + 768 ||
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hdr->manufactor != 10 ||
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hdr->version != 5 ||
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hdr->encoding != 1 ||
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hdr->nplanes != 1 ||
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hdr->bpp != 8 ||
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hdr->bpsl > MAXSCANLINE ||
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((uint8_t *)data)[size - 769] != 12) {
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printf("splash_pcx: invalid PCX image\n");
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return (1);
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}
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pcx_info.width = hdr->xmax - hdr->xmin + 1;
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pcx_info.height = hdr->ymax - hdr->ymin + 1;
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pcx_info.bpsl = hdr->bpsl;
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pcx_info.bpp = hdr->bpp;
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pcx_info.planes = hdr->nplanes;
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pcx_info.zlen = size - (128 + 1 + 768);
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pcx_info.zdata = (uint8_t *)data + 128;
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pcx_info.palette = (uint8_t *)data + size - 768;
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return (0);
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}
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static int
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pcx_draw(video_adapter_t *adp)
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{
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uint8_t *vidmem;
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int swidth, sheight, sbpsl, sdepth, splanes;
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int banksize, origin;
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int c, i, j, pos, scan, x, y;
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uint8_t line[MAXSCANLINE];
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if (pcx_info.zlen < 1)
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return (1);
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vidd_load_palette(adp, pcx_info.palette);
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vidmem = (uint8_t *)adp->va_window;
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swidth = adp->va_info.vi_width;
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sheight = adp->va_info.vi_height;
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sbpsl = adp->va_line_width;
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sdepth = adp->va_info.vi_depth;
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splanes = adp->va_info.vi_planes;
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banksize = adp->va_window_size;
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for (origin = 0; origin < sheight*sbpsl; origin += banksize) {
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vidd_set_win_org(adp, origin);
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bzero(vidmem, banksize);
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}
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x = (swidth - pcx_info.width) / 2;
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y = (sheight - pcx_info.height) / 2;
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origin = 0;
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pos = y * sbpsl + x;
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while (pos > banksize) {
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pos -= banksize;
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origin += banksize;
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}
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vidd_set_win_org(adp, origin);
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for (scan = i = 0; scan < pcx_info.height; ++scan, ++y, pos += sbpsl) {
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for (j = 0; j < pcx_info.bpsl && i < pcx_info.zlen; ++i) {
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if ((pcx_info.zdata[i] & 0xc0) == 0xc0) {
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c = pcx_info.zdata[i++] & 0x3f;
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if (i >= pcx_info.zlen)
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return (1);
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} else {
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c = 1;
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}
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if (j + c > pcx_info.bpsl)
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return (1);
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while (c--)
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line[j++] = pcx_info.zdata[i];
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}
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if (pos > banksize) {
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origin += banksize;
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pos -= banksize;
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vidd_set_win_org(adp, origin);
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}
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if (pos + pcx_info.width > banksize) {
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/* scanline crosses bank boundary */
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j = banksize - pos;
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bcopy(line, vidmem + pos, j);
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origin += banksize;
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pos -= banksize;
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vidd_set_win_org(adp, origin);
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bcopy(line + j, vidmem, pcx_info.width - j);
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} else {
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bcopy(line, vidmem + pos, pcx_info.width);
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}
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}
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return (0);
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}
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