static void de_run_gzip(deark *c, de_module_params *mparams)
{
lctx *d = NULL;
i64 pos;
i64 member_size;
d = de_malloc(c, sizeof(lctx));
d->crco = de_crcobj_create(c, DE_CRCOBJ_CRC32_IEEE);
pos = 0;
while(1) {
if(pos >= c->infile->len) break;
if(!do_gzip_read_member(c, d, pos, &member_size)) {
break;
}
if(member_size<=0) break;
pos += member_size;
}
dbuf_close(d->output_file);
if(d) {
de_crcobj_destroy(d->crco);
de_free(c, d);
}
}
static void do_read_bitmap(deark *c, lctx *d, de_int64 pos)
{
de_int64 ver_num;
dbuf *unc_pixels = NULL;
ver_num = de_getui32be(pos);
de_dbg(c, "version number: %u\n", (unsigned int)ver_num);
if(ver_num!=0 && ver_num!=2 && ver_num!=3) {
de_warn(c, "Unrecognized version number: %u\n", (unsigned int)ver_num);
}
pos += 512;
unc_pixels = dbuf_create_membuf(c, MACPAINT_IMAGE_BYTES, 1);
de_fmtutil_uncompress_packbits(c->infile, pos, c->infile->len - pos, unc_pixels, NULL);
if(unc_pixels->len < MACPAINT_IMAGE_BYTES) {
de_warn(c, "Image decompressed to %d bytes, expected %d.\n",
(int)unc_pixels->len, (int)MACPAINT_IMAGE_BYTES);
}
de_convert_and_write_image_bilevel(unc_pixels, 0,
MACPAINT_WIDTH, MACPAINT_HEIGHT, MACPAINT_WIDTH/8,
DE_CVTF_WHITEISZERO, NULL, 0);
dbuf_close(unc_pixels);
}
static void do_extract_file(deark *c, lctx *d, de_int64 dir_pos,
de_byte filetype_c64s, de_byte filetype)
{
de_int64 load_addr;
de_int64 end_addr;
de_int64 offset;
dbuf *f = NULL;
de_int64 payload_size; // = file_size-2
de_ucstring *fname = NULL;
de_int64 fname_len;
de_int64 i;
de_int64 fnpos;
de_finfo *fi = NULL;
load_addr = de_getui16le(dir_pos+2);
end_addr = de_getui16le(dir_pos+4);
offset = de_getui32le(dir_pos+8);
de_dbg(c, "load_addr=%d end_addr=%d offset=%d\n", (int)load_addr,
(int)end_addr, (int)offset);
// File name at pos+16
fnpos = dir_pos+16;
// Find the length of the (space-padded) filename.
fname_len = 0;
for(i=15; i>=0; i--) {
if(de_getbyte(fnpos+i)!=' ') {
fname_len = i+1;
break;
}
}
de_dbg2(c, "filename length: %d\n", (int)fname_len);
fname = ucstring_create(c);
dbuf_read_to_ucstring(c->infile, fnpos, fname_len, fname, 0, DE_ENCODING_PETSCII);
de_dbg(c, "filename: \"%s\"\n", ucstring_get_printable_sz(fname));
ucstring_append_sz(fname, ".prg", DE_ENCODING_ASCII);
fi = de_finfo_create(c);
de_finfo_set_name_from_ucstring(c, fi, fname);
fi->original_filename_flag = 1;
payload_size = end_addr - load_addr;
if(payload_size < 0) {
// TODO: Try to support files that don't have end_addr set properly.
de_err(c, "This type of T64 file is not supported.\n");
goto done;
}
f = dbuf_create_output_file(c, NULL, fi, 0);
dbuf_copy(c->infile, dir_pos+2, 2, f);
dbuf_copy(c->infile, offset, payload_size, f);
done:
dbuf_close(f);
de_finfo_destroy(c, fi);
ucstring_destroy(fname);
}
static void do_html_end(deark *c, lctx *d)
{
if(!d->html_outf) return;
dbuf_puts(d->html_outf, "</body>\n</html>\n");
dbuf_close(d->html_outf);
d->html_outf = NULL;
}
// 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);
}
int dbuf_create_file_from_slice(dbuf *inf, i64 pos, i64 data_size,
const char *ext, de_finfo *fi, unsigned int createflags)
{
dbuf *f;
f = dbuf_create_output_file(inf->c, ext, fi, createflags);
if(!f) return 0;
dbuf_copy(inf, pos, data_size, f);
dbuf_close(f);
return 1;
}
static int do_gem_img(deark *c, lctx *d)
{
dbuf *unc_pixels = NULL;
de_bitmap *img = NULL;
de_finfo *fi = NULL;
int is_color = 0;
i64 k;
if(d->header_size_in_words==9 && (d->nplanes==3 || d->nplanes==4)) {
i64 x;
x = de_getu16be(8*2);
if(x==0) {
is_color = 1;
}
}
de_dbg(c, "image at %d", (int)d->header_size_in_bytes);
unc_pixels = dbuf_create_membuf(c, d->rowspan_total*d->h, 0);
uncompress_pixels(c, d, unc_pixels, d->header_size_in_bytes, c->infile->len-d->header_size_in_bytes);
img = de_bitmap_create(c, d->w, d->h, is_color?3:1);
fi = de_finfo_create(c);
set_density(c, d, fi);
if(d->nplanes==1) {
de_convert_image_bilevel(unc_pixels, 0, d->rowspan_per_plane, img, DE_CVTF_WHITEISZERO);
}
else if(is_color && d->nplanes==3) {
for(k=0; k<8; k++) {
d->pal[k] = pal3bit[k];
}
read_paletted_image(c, d, unc_pixels, img);
}
else if(is_color && d->nplanes==4) {
for(k=0; k<16; k++) {
d->pal[k] = pal4bit[k];
}
read_paletted_image(c, d, unc_pixels, img);
}
else {
de_make_grayscale_palette(d->pal, ((i64)1)<<((unsigned int)d->nplanes), 1);
read_paletted_image(c, d, unc_pixels, img);
}
de_bitmap_write_to_file_finfo(img, fi, 0);
de_bitmap_destroy(img);
de_finfo_destroy(c, fi);
dbuf_close(unc_pixels);
return 1;
}
static void handler_iccp(deark *c, lctx *d, struct handler_params *hp)
{
u8 cmpr_type;
dbuf *f = NULL;
struct de_stringreaderdata *prof_name_srd = NULL;
de_finfo *fi = NULL;
char prof_name2[100];
size_t prof_name2_strlen;
i64 pos = hp->dpos;
prof_name_srd = dbuf_read_string(c->infile, pos, 80, 80,
DE_CONVFLAG_STOP_AT_NUL, DE_ENCODING_LATIN1);
if(!prof_name_srd->found_nul) goto done;
de_dbg(c, "profile name: \"%s\"", ucstring_getpsz_d(prof_name_srd->str));
pos += prof_name_srd->bytes_consumed;
// Our working copy, to use as part of the filename.
de_strlcpy(prof_name2, prof_name_srd->sz, sizeof(prof_name2));
if(!de_strcasecmp(prof_name2, "icc") ||
!de_strcasecmp(prof_name2, "icc profile"))
{
prof_name2[0] = '\0'; // Ignore generic name.
}
prof_name2_strlen = de_strlen(prof_name2);
if(prof_name2_strlen>=5) {
if(de_sz_has_ext(prof_name2, "icc")) {
// If the name already ends in ".icc", chop it off so that we don't end
// up with a double ".icc.icc" file extension.
prof_name2[prof_name2_strlen-4] = '\0';
}
}
cmpr_type = de_getbyte_p(&pos);
if(cmpr_type!=0) return;
fi = de_finfo_create(c);
if(c->filenames_from_file && prof_name2[0])
de_finfo_set_name_from_sz(c, fi, prof_name2, 0, DE_ENCODING_LATIN1);
f = dbuf_create_output_file(c, "icc", fi, DE_CREATEFLAG_IS_AUX);
de_decompress_deflate(c->infile, pos, hp->dlen - pos, f, 0, NULL,
d->is_CgBI ? 0 : DE_DEFLATEFLAG_ISZLIB);
done:
dbuf_close(f);
de_finfo_destroy(c, fi);
de_destroy_stringreaderdata(c, prof_name_srd);
}
static void destroy_bitstream(deark *c, lctx *d, struct stream_info *si)
{
if(!si) return;
if((si->stream_type==STREAMTYPE_VORBIS || si->stream_type==STREAMTYPE_THEORA)
&& si->stream_state==0)
{
do_theora_vorbis_after_headers(c, d, si);
}
if(si->header_stream) {
dbuf_close(si->header_stream);
}
de_free(c, si);
}
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 uncompress_pixels(deark *c, lctx *d, dbuf *unc_pixels,
i64 pos1, i64 len)
{
i64 bytes_consumed;
i64 pos;
i64 ypos;
i64 repeat_count;
i64 k;
i64 plane;
dbuf *unc_line = NULL;
d->pattern_buf = de_malloc(c, d->patlen);
unc_line = dbuf_create_membuf(c, d->rowspan_total, 0);
pos = pos1;
ypos = 0;
while(1) {
if(ypos >= d->h) break;
repeat_count = 1;
dbuf_empty(unc_line);
for(plane=0; plane<d->nplanes; plane++) {
uncompress_line(c, d, unc_line,
pos, ypos, &bytes_consumed, &repeat_count);
pos+=bytes_consumed;
if(bytes_consumed<1) goto done1;
}
for(k=0; k<repeat_count; k++) {
if(ypos >= d->h) break;
dbuf_copy(unc_line, 0, d->rowspan_total, unc_pixels);
ypos++;
}
}
done1:
dbuf_close(unc_line);
de_free(c, d->pattern_buf);
d->pattern_buf = NULL;
}
static void do_theora_vorbis_after_headers(deark *c, lctx *d, struct stream_info *si)
{
i64 pos = 0;
int saved_indent_level;
dbuf *f = NULL;
de_dbg_indent_save(c, &saved_indent_level);
if(si->stream_state!=0) goto done;
if(!si->header_stream) goto done;
if(!si->sti) goto done;
f = si->header_stream;
de_dbg(c, "[decoding %s comment/setup headers, %d bytes]",
si->sti->name, (int)si->header_stream->len);
de_dbg_indent(c, 1);
// Make sure the comment header signature is present.
if(si->stream_type==STREAMTYPE_VORBIS) {
if(dbuf_memcmp(f, 0, "\x03" "vorbis", 7)) {
goto done;
}
pos += 7;
}
else if(si->stream_type==STREAMTYPE_THEORA) {
if(dbuf_memcmp(f, 0, "\x81" "theora", 7)) {
goto done;
}
pos += 7;
}
do_vorbis_comment_block(c, d, f, pos);
// TODO: "Setup" header
done:
si->stream_state = 1;
dbuf_close(si->header_stream);
si->header_stream = NULL;
de_dbg_indent_restore(c, saved_indent_level);
}
static void de_run_gzip(deark *c, de_module_params *mparams)
{
lctx *d = NULL;
de_int64 pos;
de_int64 member_size;
d = de_malloc(c, sizeof(lctx));
pos = 0;
while(1) {
if(pos >= c->infile->len) break;
if(!do_gzip_read_member(c, d, pos, &member_size)) {
break;
}
if(member_size<=0) break;
pos += member_size;
}
dbuf_close(d->output_file);
de_free(c, d);
}
static void do_decode_thumbnail(deark *c, lctx *d)
{
dbuf *unc_pixels = NULL;
i64 hdrsize = 2;
de_dbg(c, "thumbnail image at %d", (int)d->thumbnail_offset);
de_dbg_indent(c, 1);
// The thumbnail image is supposed to use the same format as the main image,
// except without compression. (And the dimensions are obviously different.)
// Presumably this means the origin, palette, etc. will be the same.
// But based on the few TGA thumbnails we've seen, nobody reads the spec, and
// it's anybody's guess what format the thumbnail will use.
// TGA 2.0 spec says the dimensions are one *byte* each.
d->thumbnail_image.width = (i64)de_getbyte(d->thumbnail_offset);
d->thumbnail_image.height = (i64)de_getbyte(d->thumbnail_offset+1);
de_dbg(c, "thumbnail dimensions: %d"DE_CHAR_TIMES"%d", (int)d->thumbnail_image.width, (int)d->thumbnail_image.height);
if(d->thumbnail_image.width!=0 && d->thumbnail_image.height==0) {
de_warn(c, "Thumbnail image height is 0. Assuming the file incorrectly uses "
"16-bit thumbnail dimensions, instead of 8.");
d->thumbnail_image.width = de_getu16le(d->thumbnail_offset);
d->thumbnail_image.height = de_getu16le(d->thumbnail_offset+2);
de_dbg(c, "revised thumbnail dimensions: %d"DE_CHAR_TIMES"%d", (int)d->thumbnail_image.width, (int)d->thumbnail_image.height);
hdrsize = 4;
}
if(!de_good_image_dimensions(c, d->thumbnail_image.width, d->thumbnail_image.height)) goto done;
d->thumbnail_image.img_size_in_bytes = d->thumbnail_image.height * d->thumbnail_image.width * d->bytes_per_pixel;
unc_pixels = dbuf_open_input_subfile(c->infile, d->thumbnail_offset+hdrsize, d->thumbnail_image.img_size_in_bytes);
do_decode_image(c, d, &d->thumbnail_image, unc_pixels, "thumb", DE_CREATEFLAG_IS_AUX);
done:
dbuf_close(unc_pixels);
de_dbg_indent(c, -1);
}
// Caption/abstract
static void handle_2_120(deark *c, lctx *d, const struct ds_info *dsi,
de_int64 pos, de_int64 len)
{
de_ucstring *s = NULL;
dbuf *outf = NULL;
int encoding;
const char *fntoken;
if(c->extract_level<2) {
handle_text(c, d, dsi, pos, len);
goto done;
}
// FIXME: There is currently no way to extract IPTC captions to files,
// except when reading a raw IPTC file. If IPTC is embedded in some other
// file (as it usually is), then the -a option will extract the entire
// IPTC data, and we will never get here.
fntoken = "caption.txt";
encoding = get_ds_encoding(c, d, dsi->recnum);
if(encoding==DE_ENCODING_UNKNOWN) {
// If the encoding is unknown, copy the raw bytes.
dbuf_create_file_from_slice(c->infile, pos, len, fntoken,
NULL, DE_CREATEFLAG_IS_AUX);
goto done;
}
// If the encoding is known, convert to UTF-8.
s = ucstring_create(c);
dbuf_read_to_ucstring(c->infile, pos, len, s, 0, encoding);
outf = dbuf_create_output_file(c, fntoken, NULL, DE_CREATEFLAG_IS_AUX);
ucstring_write_as_utf8(c, s, outf, 1);
done:
if(outf) dbuf_close(outf);
if(s) ucstring_destroy(s);
}
// Read and process the keyword, language, translated keyword, or main text
// field of a tEXt/zTXt/iTXt chunk.
// 'bytes_consumed' does not include the NUL separator/terminator.
// This is a wrapper that first decompresses the field if necessary.
static int do_text_field(deark *c, lctx *d,
struct text_chunk_ctx *tcc, int which_field,
i64 pos, i64 bytes_avail,
int is_nul_terminated, int is_compressed, int encoding,
i64 *bytes_consumed)
{
dbuf *tmpdbuf = NULL;
int retval = 0;
i64 bytes_consumed2;
if(!is_compressed) {
retval = do_unc_text_field(c, d, tcc,
which_field, c->infile, pos, bytes_avail,
is_nul_terminated, encoding, bytes_consumed);
goto done;
}
// Decompress to a membuf, then call do_unc_text_field() with that membuf.
// Note that a compressed field cannot be NUL-terminated.
*bytes_consumed = bytes_avail;
tmpdbuf = dbuf_create_membuf(c, 0, 0);
if(!de_decompress_deflate(c->infile, pos, bytes_avail, tmpdbuf, 0, NULL,
d->is_CgBI ? 0 : DE_DEFLATEFLAG_ISZLIB))
{
goto done;
}
retval = do_unc_text_field(c, d, tcc,
which_field, tmpdbuf, 0, tmpdbuf->len,
0, encoding, &bytes_consumed2);
done:
dbuf_close(tmpdbuf);
return retval;
}
void de_run(deark *c)
{
dbuf *orig_ifile = NULL;
dbuf *subfile = NULL;
de_int64 subfile_size;
struct deark_module_info *module_to_use = NULL;
const char *friendly_infn;
if(c->modhelp_req && c->input_format_req) {
do_modhelp(c);
goto done;
}
if(c->input_style==DE_INPUTSTYLE_STDIN) {
friendly_infn = "[stdin]";
}
else {
friendly_infn = c->input_filename;
}
if(!friendly_infn) {
de_err(c, "Input file not set\n");
de_fatalerror(c);
return;
}
de_register_modules(c);
if(c->input_format_req) {
module_to_use = de_get_module_by_id(c, c->input_format_req);
if(!module_to_use) {
de_err(c, "Unknown module \"%s\"\n", c->input_format_req);
goto done;
}
}
if(c->slice_size_req_valid) {
de_dbg(c, "Input file: %s[%d,%d]\n", friendly_infn,
(int)c->slice_start_req, (int)c->slice_size_req);
}
else if(c->slice_start_req) {
de_dbg(c, "Input file: %s[%d]\n", friendly_infn,
(int)c->slice_start_req);
}
else {
de_dbg(c, "Input file: %s\n", friendly_infn);
}
if(c->input_style==DE_INPUTSTYLE_STDIN) {
orig_ifile = dbuf_open_input_stdin(c, c->input_filename);
}
else {
orig_ifile = dbuf_open_input_file(c, c->input_filename);
}
if(!orig_ifile) {
goto done;
}
c->infile = orig_ifile;
// If we are only supposed to look at a segment of the original file,
// do that by creating a child dbuf, using dbuf_open_input_subfile().
if(c->slice_start_req>0 || c->slice_size_req_valid) {
if(c->slice_size_req_valid)
subfile_size = c->slice_size_req;
else
subfile_size = dbuf_get_length(c->infile) - c->slice_start_req;
subfile = dbuf_open_input_subfile(c->infile, c->slice_start_req, subfile_size);
c->infile = subfile;
}
if(!module_to_use) {
module_to_use = detect_module_for_file(c);
}
if(!module_to_use) {
if(c->infile->len==0)
de_err(c, "Unknown or unsupported file format (empty file)\n");
else
de_err(c, "Unknown or unsupported file format\n");
goto done;
}
de_msg(c, "Module: %s\n", module_to_use->id);
if(module_to_use->flags&DE_MODFLAG_NONWORKING) {
de_warn(c, "The %s module is considered to be incomplete, and may "
"not work properly. Caveat emptor.\n",
module_to_use->id);
}
de_dbg2(c, "file size: %" INT64_FMT "\n", c->infile->len);
if(!de_run_module(c, module_to_use, NULL)) {
goto done;
}
// The DE_MODFLAG_NOEXTRACT flag means the module is not expected to extract
// any files.
if(c->num_files_extracted==0 && c->error_count==0 &&
!(module_to_use->flags&DE_MODFLAG_NOEXTRACT))
{
de_msg(c, "No files found to extract!\n");
}
done:
if(subfile) dbuf_close(subfile);
if(orig_ifile) dbuf_close(orig_ifile);
}
// XIMG and similar formats.
// TODO: Should this function be merged with do_gem_img()?
static int do_gem_ximg(deark *c, lctx *d)
{
dbuf *unc_pixels = NULL;
de_bitmap *img = NULL;
de_finfo *fi = NULL;
int retval = 0;
int saved_indent_level;
de_dbg_indent_save(c, &saved_indent_level);
de_dbg(c, "header (continued) at %d", 8*2);
de_dbg_indent(c, 1);
if((d->nplanes>=1 && d->nplanes<=8) /* || d->nplanes==24 */) {
;
}
else {
if(d->is_ximg)
de_err(c, "%d-plane XIMG images are not supported", (int)d->nplanes);
else
de_err(c, "This type of %d-plane image is not supported", (int)d->nplanes);
goto done;
}
if(d->header_size_in_words==25 && !d->is_ximg) {
i64 pal_pos = d->header_size_in_bytes-32;
de_dbg(c, "palette at %d", (int)pal_pos);
de_dbg_indent(c, 1);
de_fmtutil_read_atari_palette(c, c->infile, pal_pos,
d->pal, 16, ((i64)1)<<d->nplanes, 0);
de_dbg_indent(c, -1);
}
else {
read_palette_ximg(c, d);
}
if(d->nplanes==1 && d->pal[0]==d->pal[1]) {
de_dbg(c, "Palette doesn't seem to be present. Using a default palette.");
d->pal[0] = DE_STOCKCOLOR_WHITE;
d->pal[1] = DE_STOCKCOLOR_BLACK;
}
de_dbg_indent(c, -1);
de_dbg(c, "image at %d", (int)d->header_size_in_bytes);
unc_pixels = dbuf_create_membuf(c, d->rowspan_total*d->h, 0);
uncompress_pixels(c, d, unc_pixels, d->header_size_in_bytes, c->infile->len-d->header_size_in_bytes);
img = de_bitmap_create(c, d->w, d->h, 3);
fi = de_finfo_create(c);
set_density(c, d, fi);
if(d->nplanes>8) {
read_rgb_image(c, d, unc_pixels, img);
}
else {
read_paletted_image(c, d, unc_pixels, img);
}
de_bitmap_write_to_file_finfo(img, fi, 0);
retval = 1;
done:
de_bitmap_destroy(img);
de_finfo_destroy(c, fi);
dbuf_close(unc_pixels);
de_dbg_indent_restore(c, saved_indent_level);
return retval;
}
static void de_run_tga(deark *c, de_module_params *mparams)
{
lctx *d = NULL;
i64 pos;
dbuf *unc_pixels = NULL;
int saved_indent_level;
i64 rowspan_tmp;
de_dbg_indent_save(c, &saved_indent_level);
d = de_malloc(c, sizeof(lctx));
detect_file_format(c, d);
if(d->file_format==FMT_VST) {
de_declare_fmt(c, "TrueVista");
}
else {
de_declare_fmt(c, "TGA");
}
pos = 0;
if(d->file_format==FMT_VST) {
if(!do_read_vst_headers(c, d)) goto done;
}
else {
if(!do_read_tga_headers(c, d)) goto done;
}
pos += 18;
if(d->id_field_len>0) {
de_dbg(c, "image ID at %d (len=%d)", (int)pos, (int)d->id_field_len);
pos += d->id_field_len;
}
if(d->color_map_type!=0) {
d->bytes_per_pal_entry = (d->cmap_depth+7)/8;
d->pal_size_in_bytes = d->cmap_length * d->bytes_per_pal_entry;
de_dbg(c, "color map at %d (%d colors, %d bytes)", (int)pos,
(int)d->cmap_length, (int)d->pal_size_in_bytes);
de_dbg_indent(c, 1);
if(!do_read_palette(c, d, pos)) goto done;
de_dbg_indent(c, -1);
pos += d->pal_size_in_bytes;
}
de_dbg(c, "bitmap at %d", (int)pos);
de_dbg_indent(c, 1);
d->bytes_per_pixel = ((d->pixel_depth+7)/8);
if(d->pixel_depth==1) {
rowspan_tmp = (d->main_image.width+7)/8;
}
else {
rowspan_tmp = d->main_image.width * d->bytes_per_pixel;
}
d->main_image.img_size_in_bytes = d->main_image.height * rowspan_tmp;
if(d->color_type!=TGA_CLRTYPE_PALETTE && d->color_type!=TGA_CLRTYPE_TRUECOLOR &&
d->color_type!=TGA_CLRTYPE_GRAYSCALE)
{
de_err(c, "Unsupported color type (%d: %s)", (int)d->color_type, d->clrtype_name);
goto done;
}
if( (d->color_type==TGA_CLRTYPE_PALETTE && d->pixel_depth==8) ||
(d->color_type==TGA_CLRTYPE_TRUECOLOR && d->pixel_depth==15) ||
(d->color_type==TGA_CLRTYPE_TRUECOLOR && d->pixel_depth==16) ||
(d->color_type==TGA_CLRTYPE_TRUECOLOR && d->pixel_depth==24) ||
(d->color_type==TGA_CLRTYPE_TRUECOLOR && d->pixel_depth==32) ||
(d->color_type==TGA_CLRTYPE_GRAYSCALE && d->pixel_depth==1) ||
(d->color_type==TGA_CLRTYPE_GRAYSCALE && d->pixel_depth==8) )
{
;
}
else {
de_err(c, "Unsupported TGA image type (%s, depth=%d)", d->clrtype_name,
(int)d->pixel_depth);
goto done;
}
if(d->cmpr_type==TGA_CMPR_RLE) {
if(d->pixel_depth<8) {
de_err(c, "RLE compression not supported when depth (%d) is less than 8",
(int)d->pixel_depth);
goto done;
}
unc_pixels = dbuf_create_membuf(c, d->main_image.img_size_in_bytes, 1);
if(!do_decode_rle(c, d, pos, unc_pixels)) goto done;
}
else if(d->cmpr_type==TGA_CMPR_NONE) {
unc_pixels = dbuf_open_input_subfile(c->infile, pos, d->main_image.img_size_in_bytes);
}
else {
de_err(c, "Unsupported compression type (%d, %s)", (int)d->cmpr_type, d->cmpr_name);
goto done;
}
// Maybe scan the image, to help detect transparency.
do_prescan_image(c, d, unc_pixels);
if(d->pixel_depth==32) {
de_dbg(c, "using alpha channel: %s", d->has_alpha_channel?"yes":"no");
}
// TODO: 16-bit images could theoretically have a transparency bit, but I don't
// know how to detect that.
do_decode_image(c, d, &d->main_image, unc_pixels, NULL, 0);
de_dbg_indent(c, -1);
if(d->thumbnail_offset!=0) {
do_decode_thumbnail(c, d);
}
done:
dbuf_close(unc_pixels);
de_dbg_indent_restore(c, saved_indent_level);
de_free(c, d);
}
// Generic (ImageMagick?) profile. Hex-encoded, with three header lines.
static void on_im_generic_profile_main(deark *c, lctx *d,
struct text_chunk_ctx *tcc, dbuf *inf, i64 pos1, i64 len)
{
int k;
i64 pos = pos1;
i64 dlen;
int dump_to_file = 0;
int decode_to_membuf = 0;
const char *ext = NULL;
// Skip the first three lines
for(k=0; k<3; k++) {
int ret;
i64 foundpos = 0;
ret = dbuf_search_byte(inf, 0x0a, pos, pos1+len-pos, &foundpos);
if(!ret) goto done;
pos = foundpos+1;
}
dlen = pos1+len-pos;
if(tcc->im_generic_profile_type==PROFILETYPE_XMP) {
dump_to_file = 1;
ext = "xmp";
}
else if(tcc->im_generic_profile_type==PROFILETYPE_8BIM) {
decode_to_membuf = 1;
}
else if(tcc->im_generic_profile_type==PROFILETYPE_IPTC) {
if(c->extract_level>=2) {
dump_to_file = 1;
ext = "iptc";
}
else {
decode_to_membuf = 1;
}
}
else if(tcc->im_generic_profile_type==PROFILETYPE_ICC) {
dump_to_file = 1;
ext = "icc";
}
else {
if(c->extract_level>=2) {
dump_to_file = 1;
ext = "profile.bin";
}
}
if(dump_to_file) {
dbuf *outf;
outf = dbuf_create_output_file(c, ext?ext:"bin", NULL, DE_CREATEFLAG_IS_AUX);
de_decode_base16(c, inf, pos, dlen, outf, 0);
dbuf_close(outf);
}
if(decode_to_membuf) {
dbuf *tmpf;
tmpf = dbuf_create_membuf(c, 0, 0);
de_decode_base16(c, inf, pos, dlen, tmpf, 0);
if(tcc->im_generic_profile_type==PROFILETYPE_8BIM) {
de_fmtutil_handle_photoshop_rsrc(c, tmpf, 0, tmpf->len, 0x0);
}
else if(tcc->im_generic_profile_type==PROFILETYPE_IPTC) {
de_fmtutil_handle_iptc(c, tmpf, 0, tmpf->len, 0x0);
}
dbuf_close(tmpf);
}
done:
;
}
static void de_run_alphabmp(deark *c, de_module_params *mparams)
{
unsigned int flags;
lctx *d = NULL;
i64 pos;
i64 palsize;
dbuf *unc_pixels = NULL;
int saved_indent_level;
de_dbg_indent_save(c, &saved_indent_level);
d = de_malloc(c, sizeof(lctx));
de_declare_fmt(c, "Alpha Microsystems BMP");
pos = 10;
de_dbg(c, "bitmap image definition block at %d", (int)pos);
de_dbg_indent(c, 1);
d->w = de_getu16le(pos);
d->h = de_getu16le(pos+2);
de_dbg_dimensions(c, d->w, d->h);
if(!de_good_image_dimensions(c, d->w, d->h)) goto done;
d->bpp = de_getu16le(pos+4);
de_dbg(c, "bits/pixel: %d", (int)d->bpp);
flags = (unsigned int)de_getu16le(pos+6);
d->has_palette = flags & 0x01;
d->palette_is_hls = (flags>>1) & 0x01;
de_dbg(c, "has-palette: %d", (int)d->has_palette);
if(d->has_palette)
de_dbg(c, "palette-is-HLS: %d", (int)d->palette_is_hls);
d->compression = de_getu16le(pos+8);
de_dbg(c, "compression: %d", (int)d->compression);
de_dbg_indent(c, -1);
pos += 70;
if(d->has_palette) {
if(d->palette_is_hls && d->bpp<=8) {
de_err(c, "HLS palettes are not supported");
goto done;
}
if(!do_read_palette(c, d, pos, &palsize)) goto done;
pos += palsize;
}
else if(d->bpp<=8) {
de_err(c, "Paletted images without an embedded palette are not supported");
goto done;
}
de_dbg(c, "bitmap at %d", (int)pos);
de_dbg_indent(c, 1);
if(d->compression) {
unc_pixels = dbuf_create_membuf(c, 32768, 0);
if(!do_uncompress_image(c, d, pos, unc_pixels)) goto done;
}
else {
unc_pixels = dbuf_open_input_subfile(c->infile, pos, c->infile->len - pos);
}
if(d->bpp!=1 && d->bpp!=4 && d->bpp!=8 && d->bpp!=24) {
de_err(c, "%d bits/pixel is not supported", (int)d->bpp);
goto done;
}
do_bitmap(c, d, unc_pixels);
de_dbg_indent(c, -1);
done:
de_dbg_indent_restore(c, saved_indent_level);
dbuf_close(unc_pixels);
de_free(c, d);
}
