// Rasterized caption
static void handle_2_125(deark *c, lctx *d, const struct ds_info *dsi,
de_int64 pos, de_int64 len)
{
dbuf *unc_pixels = NULL;
struct deark_bitmap *img = NULL;
de_int64 i, j;
de_byte b;
de_int64 rowspan;
de_int64 width, height;
// I can't find any examples of this field, so this may not be correct.
// The format seems to be well-documented, though the pixels are in an
// unusual order.
unc_pixels = dbuf_open_input_subfile(c->infile, pos, len);
width = 460;
height = 128;
img = de_bitmap_create(c, width, height, 1);
rowspan = height/8;
for(j=0; j<width; j++) {
for(i=0; i<height; i++) {
b = de_get_bits_symbol(unc_pixels, 1, rowspan*j, i);
de_bitmap_setpixel_gray(img, j, (height-1-i), b?0:255);
}
}
de_bitmap_write_to_file(img, "caption", DE_CREATEFLAG_IS_AUX);
de_bitmap_destroy(img);
dbuf_close(unc_pixels);
}
static void do_bitmap(deark *c, lctx *d, dbuf *unc_pixels)
{
i64 i, j;
i64 rowspan;
u32 clr;
de_bitmap *img = NULL;
u8 b;
rowspan = (d->w * d->bpp +7)/8;
img = de_bitmap_create(c, d->w, d->h, 3);
for(j=0; j<d->h; j++) {
for(i=0; i<d->w; i++) {
if(d->bpp<=8) {
b = de_get_bits_symbol(unc_pixels, d->bpp, j*rowspan, i);
clr = d->pal[(unsigned int)b];
}
else {
clr = dbuf_getRGB(unc_pixels, j*rowspan + i*3, 0);
}
de_bitmap_setpixel_rgb(img, i, j, clr);
}
}
de_bitmap_write_to_file(img, NULL, 0);
de_bitmap_destroy(img);
}
static void do_image_paletted(deark *c, lctx *d, dbuf *bits, de_int64 bits_offset)
{
struct deark_bitmap *img = NULL;
img = bmp_bitmap_create(c, d, d->pal_is_grayscale?1:3);
de_convert_image_paletted(bits, bits_offset,
d->bitcount, d->rowspan, d->pal, img, 0);
de_bitmap_write_to_file(img, NULL, 0);
de_bitmap_destroy(img);
}
// Some MacPaint files contain a collection of brush patterns.
// Essentially, MacPaint saves workspace settings inside image files.
// (But these patterns are the only setting.)
static void do_read_patterns(deark *c, lctx *d, de_int64 pos)
{
de_int64 cell;
de_int64 i, j;
de_byte x;
const de_int64 dispwidth = 19;
const de_int64 dispheight = 17;
de_int64 xpos, ypos;
int is_blank;
struct deark_bitmap *pat = NULL;
de_uint32 patcrc;
const char *patsetname;
pos += 4;
patcrc = x_dbuf_crc32(c->infile, pos, 38*8);
patsetname = get_pattern_set_info(patcrc, &is_blank);
de_dbg(c, "brush patterns crc: 0x%08x (%s)\n", (unsigned int)patcrc, patsetname);
if(c->extract_level<2) {
goto done;
}
if(is_blank) {
de_dbg(c, "brush patterns are blank: not extracting\n");
goto done;
}
pat = de_bitmap_create(c, (dispwidth+1)*19+1, (dispheight+1)*2+1, 1);
for(cell=0; cell<38; cell++) {
xpos = (dispwidth+1)*(cell%19)+1;
ypos = (dispheight+1)*(cell/19)+1;
for(j=0; j<dispheight; j++) {
for(i=0; i<dispwidth; i++) {
// TODO: Figure out the proper "brush origin" of these patterns.
// Some of them may be shifted differently than MacPaint displays them.
x = de_get_bits_symbol(c->infile, 1, pos+cell*8+j%8, i%8);
// 0 = white. Only need to set the white pixels, since they start out
// black.
if(x==0) {
de_bitmap_setpixel_gray(pat, xpos+i, ypos+j, 255);
}
}
}
}
de_bitmap_write_to_file(pat, "pat", DE_CREATEFLAG_IS_AUX);
done:
de_bitmap_destroy(pat);
}
static int do_image_pgm_ppm_binary(deark *c, lctx *d, struct page_ctx *pg, de_int64 pos1)
{
struct deark_bitmap *img = NULL;
de_int64 rowspan;
de_int64 nsamples; // For both input and output
de_int64 bytes_per_sample;
de_int64 i, j, k;
de_int64 pos = pos1;
unsigned int samp_ori[3];
de_byte samp_adj[3];
if(fmt_is_ppm(pg->fmt)) nsamples=3;
else nsamples=1;
if(pg->maxval<=255) bytes_per_sample=1;
else bytes_per_sample=2;
rowspan = pg->width * nsamples * bytes_per_sample;
pg->image_data_len = rowspan * pg->height;
img = de_bitmap_create(c, pg->width, pg->height, (int)nsamples);
for(j=0; j<pg->height; j++) {
for(i=0; i<pg->width; i++) {
for(k=0; k<nsamples; k++) {
if(bytes_per_sample==1) {
samp_ori[k] = de_getbyte(pos++);
}
else {
samp_ori[k] = (unsigned int)de_getbyte(pos++) << 8 ;
samp_ori[k] |= (unsigned int)de_getbyte(pos++);
}
samp_adj[k] = de_scale_n_to_255(pg->maxval, samp_ori[k]);
}
if(nsamples==1) {
de_bitmap_setpixel_gray(img, i, j, samp_adj[0]);
}
else {
de_uint32 clr;
clr = DE_MAKE_RGB(samp_adj[0], samp_adj[1], samp_adj[2]);
de_bitmap_setpixel_rgb(img, i, j, clr);
}
}
}
de_bitmap_write_to_file(img, NULL, 0);
de_bitmap_destroy(img);
return 1;
}
static void do_image_24bit(deark *c, lctx *d, dbuf *bits, de_int64 bits_offset)
{
struct deark_bitmap *img = NULL;
de_int64 i, j;
de_uint32 clr;
img = bmp_bitmap_create(c, d, 3);
for(j=0; j<d->height; j++) {
for(i=0; i<d->width; i++) {
clr = dbuf_getRGB(bits, bits_offset + j*d->rowspan + 3*i, DE_GETRGBFLAG_BGR);
de_bitmap_setpixel_rgb(img, i, j, clr);
}
}
de_bitmap_write_to_file(img, NULL, 0);
de_bitmap_destroy(img);
}
static void do_decode_24bit(deark *c, lctx *d, struct page_ctx *pg)
{
dbuf *unc_pixels = NULL;
struct deark_bitmap *img = NULL;
de_int64 i, j;
de_byte cr, cg, cb, ca;
de_int64 w, h;
de_int64 skip;
w = pg->type_info->width;
h = pg->type_info->height;
// TODO: Try to support uncompressed 24-bit images, assuming they exist.
// Apparently, some 'it32' icons begin with four extra 0x00 bytes.
// Skip over the first four bytes if they are 0x00.
// (I don't know the reason for these bytes, but this is the same
// logic libicns uses.)
skip = 0;
if(pg->code4cc.id==0x69743332) { // 'it32' (128x128)
if(!dbuf_memcmp(c->infile, pg->image_pos, "\0\0\0\0", 4)) {
skip = 4;
}
}
unc_pixels = dbuf_create_membuf(c, w*h*3, 1);
do_uncompress_24(c, d, pg, unc_pixels, skip);
img = de_bitmap_create(c, w, h, 4);
for(j=0; j<pg->type_info->height; j++) {
for(i=0; i<pg->type_info->width; i++) {
cr = dbuf_getbyte(unc_pixels, j*w + i);
cg = dbuf_getbyte(unc_pixels, (h+j)*w + i);
cb = dbuf_getbyte(unc_pixels, (2*h+j)*w + i);
if(pg->mask_pos)
ca = de_getbyte(pg->mask_pos + j*w + i);
else
ca = 0xff;
de_bitmap_setpixel_rgba(img, i, j, DE_MAKE_RGBA(cr,cg,cb,ca));
}
}
de_bitmap_write_to_file(img, pg->filename_token, 0);
de_bitmap_destroy(img);
if(unc_pixels) dbuf_close(unc_pixels);
}
static void do_decode_1_4_8bit(deark *c, lctx *d, struct page_ctx *pg)
{
struct deark_bitmap *img = NULL;
de_int64 i, j;
de_byte a, b;
de_byte x;
de_int32 fgcol;
img = de_bitmap_create(c, pg->type_info->width, pg->type_info->height, 4);
for(j=0; j<pg->type_info->height; j++) {
for(i=0; i<pg->type_info->width; i++) {
// Foreground
b = de_get_bits_symbol(c->infile, pg->type_info->bpp, pg->image_pos + pg->rowspan*j, i);
if(pg->type_info->bpp==8) {
fgcol = getpal256((int)b);
}
else if(pg->type_info->bpp==4) {
fgcol = pal16[(unsigned int)b];
}
else {
fgcol = b ? 0x0000000 : 0xffffff;
}
// Opacity
if(pg->mask_pos) {
x = de_get_bits_symbol(c->infile, 1, pg->mask_pos + pg->mask_rowspan*j, i);
a = x ? 0xff : 0x00;
}
else {
a = 0xff;
}
de_bitmap_setpixel_rgba(img, i, j, DE_SET_ALPHA(fgcol, a));
}
}
de_bitmap_write_to_file(img, pg->filename_token, 0);
de_bitmap_destroy(img);
}
static int do_image_pgm_ppm_ascii(deark *c, lctx *d, struct page_ctx *pg, de_int64 pos1)
{
struct deark_bitmap *img = NULL;
de_int64 nsamples; // For both input and output
de_int64 pos = pos1;
de_int64 xpos, ypos, sampidx;
char samplebuf[32];
size_t samplebuf_used;
de_byte b;
if(fmt_is_ppm(pg->fmt)) nsamples=3;
else nsamples=1;
img = de_bitmap_create(c, pg->width, pg->height, (int)nsamples);
xpos=0; ypos=0;
sampidx=0;
samplebuf_used=0;
while(1) {
if(pos >= c->infile->len) break; // end of file
if(ypos==(pg->height-1) && xpos>=pg->width) break; // end of image
if(ypos>=pg->height) break;
b = de_getbyte(pos++);
if(is_pnm_whitespace(b)) {
if(samplebuf_used>0) {
de_int64 v;
de_byte v_adj;
// Completed a sample
samplebuf[samplebuf_used] = '\0'; // NUL terminate for de_atoi64()
v = de_atoi64((const char*)samplebuf);
v_adj = de_scale_n_to_255(pg->maxval, v);
samplebuf_used = 0;
if(nsamples>1) {
de_bitmap_setsample(img, xpos, ypos, sampidx, v_adj);
}
else {
de_bitmap_setpixel_gray(img, xpos, ypos, v_adj);
}
sampidx++;
if(sampidx>=nsamples) {
sampidx=0;
xpos++;
if(xpos>=pg->width) {
xpos=0;
ypos++;
}
}
}
else { // Skip extra whitespace
continue;
}
}
else {
// Non-whitespace. Save for later.
if(samplebuf_used < sizeof(samplebuf_used)-1) {
samplebuf[samplebuf_used++] = b;
}
}
}
de_bitmap_write_to_file(img, NULL, 0);
de_bitmap_destroy(img);
return 1;
}
static void do_static_bitmap(deark *c, lctx *d, struct para_info *pinfo, i64 pos1)
{
i64 dlen;
i64 pos = pos1;
unsigned int bmType;
i64 bmWidth, bmHeight;
i64 bmPlanes;
i64 bmBitsPixel;
i64 bytes_per_row_per_plane;
i64 src_realbitsperpixel;
de_bitmap *img = NULL;
pos += 8; // ??
dlen = de_getu32le_p(&pos);
de_dbg(c, "bitmap size: %d", (int)dlen);
bmType = (unsigned int)de_getu16le_p(&pos);
de_dbg(c, "bmType: %u", bmType);
bmWidth = de_getu16le_p(&pos);
bmHeight = de_getu16le_p(&pos);
de_dbg_dimensions(c, bmWidth, bmHeight);
bytes_per_row_per_plane = de_getu16le_p(&pos);
de_dbg(c, "bytes/row: %d", (int)bytes_per_row_per_plane);
bmPlanes = (i64)de_getbyte_p(&pos);
de_dbg(c, "planes: %d", (int)bmPlanes);
bmBitsPixel = (i64)de_getbyte_p(&pos);
de_dbg(c, "bmBitsPixel: %d", (int)bmBitsPixel);
pos += 4; // Placeholder for a pointer?
if((bmBitsPixel==1 && bmPlanes==1) ||
(bmBitsPixel==1 && bmPlanes==4) ||
(bmBitsPixel==8 && bmPlanes==1))
{
;
}
else {
de_err(c, "This type of static OLE bitmap is not supported "
"(bmBitsPixel=%d, planes=%d)", (int)bmBitsPixel, (int)bmPlanes);
goto done;
}
src_realbitsperpixel = bmBitsPixel * bmPlanes;
if(!de_good_image_dimensions(c, bmWidth, bmHeight)) goto done;
img = de_bitmap_create(c, bmWidth, bmHeight, (src_realbitsperpixel==1)?1:3);
if(bmBitsPixel==1 && bmPlanes==1) {
de_convert_image_bilevel(c->infile, pos, bytes_per_row_per_plane, img, 0);
}
else if(bmBitsPixel==1 || bmPlanes==4) {
wri_convert_image_pal4planar(c, pos, bytes_per_row_per_plane, img);
}
else if(bmBitsPixel==8 || bmPlanes==1) {
wri_convert_image_pal8(c, pos, bytes_per_row_per_plane, img);
}
de_bitmap_write_to_file(img, NULL, 0);
done:
de_bitmap_destroy(img);
}
