static int
cpTiles(TIFF* in, TIFF* out)
{
tsize_t bufsize = TIFFTileSize(in);
unsigned char *buf = (unsigned char *)_TIFFmalloc(bufsize);
if (buf) {
ttile_t t, nt = TIFFNumberOfTiles(in);
uint32 *bytecounts;
if (!TIFFGetField(in, TIFFTAG_TILEBYTECOUNTS, &bytecounts)) {
fprintf(stderr, "tiffsplit: tile byte counts are missing\n");
return (0);
}
for (t = 0; t < nt; t++) {
if (bytecounts[t] > (uint32) bufsize) {
buf = (unsigned char *)_TIFFrealloc(buf, bytecounts[t]);
if (!buf)
return (0);
bufsize = bytecounts[t];
}
if (TIFFReadRawTile(in, t, buf, bytecounts[t]) < 0 ||
TIFFWriteRawTile(out, t, buf, bytecounts[t]) < 0) {
_TIFFfree(buf);
return (0);
}
}
_TIFFfree(buf);
return (1);
}
return (0);
}
static int
cpTiles(TIFF* in, TIFF* out)
{
tsize_t bufsize = TIFFTileSize(in);
unsigned char *buf = (unsigned char *)_TIFFmalloc(bufsize);
if (buf) {
ttile_t t, nt = TIFFNumberOfTiles(in);
tsize_t *bytecounts;
TIFFGetField(in, TIFFTAG_TILEBYTECOUNTS, &bytecounts);
for (t = 0; t < nt; t++) {
if (bytecounts[t] > bufsize) {
buf = (unsigned char *)_TIFFrealloc(buf, bytecounts[t]);
if (!buf)
goto bad;
bufsize = bytecounts[t];
}
if (TIFFReadRawTile(in, t, buf, bytecounts[t]) < 0 ||
TIFFWriteRawTile(out, t, buf, bytecounts[t]) < 0) {
_TIFFfree(buf);
return 0;
}
}
_TIFFfree(buf);
return 1;
}
bad:
TIFFError(TIFFFileName(in),
"Can't allocate space for tile buffer.");
return (0);
}
static int
cpTiles(TIFF* in, TIFF* out)
{
tmsize_t bufsize = TIFFTileSize(in);
unsigned char *buf = (unsigned char *)_TIFFmalloc(bufsize);
if (buf) {
ttile_t t, nt = TIFFNumberOfTiles(in);
uint64 *bytecounts;
TIFFGetField(in, TIFFTAG_TILEBYTECOUNTS, &bytecounts);
for (t = 0; t < nt; t++) {
if (bytecounts[t] > (uint64) bufsize) {
buf = (unsigned char *)_TIFFrealloc(buf, (tmsize_t)bytecounts[t]);
if (!buf)
return (0);
bufsize = (tmsize_t)bytecounts[t];
}
if (TIFFReadRawTile(in, t, buf, (tmsize_t)bytecounts[t]) < 0 ||
TIFFWriteRawTile(out, t, buf, (tmsize_t)bytecounts[t]) < 0) {
_TIFFfree(buf);
return (0);
}
}
_TIFFfree(buf);
return (1);
}
return (0);
}
static void aperio_tiff_tilereader(openslide_t *osr,
TIFF *tiff,
uint32_t *dest,
int64_t x, int64_t y,
int32_t w, int32_t h) {
// which compression?
uint16_t compression_mode;
TIFFGetField(tiff, TIFFTAG_COMPRESSION, &compression_mode);
// not for us? fallback
if ((compression_mode != APERIO_COMPRESSION_JP2K_YCBCR) &&
(compression_mode != APERIO_COMPRESSION_JP2K_RGB)) {
_openslide_generic_tiff_tilereader(osr, tiff, dest, x, y, w, h);
return;
}
// else, JPEG 2000!
opj_cio_t *stream = NULL;
opj_dinfo_t *dinfo = NULL;
opj_image_t *image = NULL;
opj_image_comp_t *comps = NULL;
// note: don't use info_handler, it outputs lots of junk
opj_event_mgr_t event_callbacks = {
.error_handler = error_callback,
.warning_handler = warning_callback,
};
// get tile number
ttile_t tile_no = TIFFComputeTile(tiff, x, y, 0, 0);
// g_debug("aperio reading tile_no: %d", tile_no);
// get tile size
toff_t *sizes;
if (TIFFGetField(tiff, TIFFTAG_TILEBYTECOUNTS, &sizes) == 0) {
_openslide_set_error(osr, "Cannot get tile size");
return; // ok, haven't allocated anything yet
}
tsize_t tile_size = sizes[tile_no];
// a slide with zero-length tiles has been seen in the wild
if (!tile_size) {
// fill with transparent
memset(dest, 0, w * h * 4);
//g_debug("skipping tile %d", tile_no);
return; // ok, haven't allocated anything yet
}
// get raw tile
tdata_t buf = g_slice_alloc(tile_size);
tsize_t size = TIFFReadRawTile(tiff, tile_no, buf, tile_size);
if (size == -1) {
_openslide_set_error(osr, "Cannot get raw tile");
goto DONE;
}
// init decompressor
opj_dparameters_t parameters;
dinfo = opj_create_decompress(CODEC_J2K);
opj_set_default_decoder_parameters(¶meters);
opj_setup_decoder(dinfo, ¶meters);
stream = opj_cio_open((opj_common_ptr) dinfo, buf, size);
opj_set_event_mgr((opj_common_ptr) dinfo, &event_callbacks, osr);
// decode
image = opj_decode(dinfo, stream);
// check error
if (openslide_get_error(osr)) {
goto DONE;
}
comps = image->comps;
// sanity check
if (image->numcomps != 3) {
_openslide_set_error(osr, "image->numcomps != 3");
goto DONE;
}
// TODO more checks?
copy_aperio_tile(compression_mode, comps, dest,
w, h,
w / comps[0].w, h / comps[0].h,
w / comps[1].w, h / comps[1].h,
w / comps[2].w, h / comps[2].h);
DONE:
// erase
g_slice_free1(tile_size, buf);
if (image) opj_image_destroy(image);
if (stream) opj_cio_close(stream);
if (dinfo) opj_destroy_decompress(dinfo);
}
int
PS_Lvl2page(FILE* fd, TIFF* tif, uint32 w, uint32 h)
{
uint16 fillorder;
int use_rawdata, tiled_image, breaklen;
uint32 chunk_no, num_chunks, *bc;
unsigned char *buf_data, *cp;
tsize_t chunk_size, byte_count;
#if defined( EXP_ASCII85ENCODER )
int ascii85_l; /* Length, in bytes, of ascii85_p[] data */
uint8 * ascii85_p = 0; /* Holds ASCII85 encoded data */
#endif
PS_Lvl2colorspace(fd, tif);
use_rawdata = PS_Lvl2ImageDict(fd, tif, w, h);
fputs("%%BeginData:\n", fd);
fputs("exec\n", fd);
tiled_image = TIFFIsTiled(tif);
if (tiled_image) {
num_chunks = TIFFNumberOfTiles(tif);
TIFFGetField(tif, TIFFTAG_TILEBYTECOUNTS, &bc);
} else {
num_chunks = TIFFNumberOfStrips(tif);
TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &bc);
}
if (use_rawdata) {
chunk_size = bc[0];
for (chunk_no = 1; chunk_no < num_chunks; chunk_no++)
if (bc[chunk_no] > chunk_size)
chunk_size = bc[chunk_no];
} else {
if (tiled_image)
chunk_size = TIFFTileSize(tif);
else
chunk_size = TIFFStripSize(tif);
}
buf_data = (unsigned char *)_TIFFmalloc(chunk_size);
if (!buf_data) {
TIFFError(filename, "Can't alloc %u bytes for %s.",
chunk_size, tiled_image ? "tiles" : "strips");
return(FALSE);
}
#if defined( EXP_ASCII85ENCODER )
if ( ascii85 ) {
/*
* Allocate a buffer to hold the ASCII85 encoded data. Note
* that it is allocated with sufficient room to hold the
* encoded data (5*chunk_size/4) plus the EOD marker (+8)
* and formatting line breaks. The line breaks are more
* than taken care of by using 6*chunk_size/4 rather than
* 5*chunk_size/4.
*/
ascii85_p = _TIFFmalloc( (chunk_size+(chunk_size/2)) + 8 );
if ( !ascii85_p ) {
_TIFFfree( buf_data );
TIFFError( filename, "Cannot allocate ASCII85 encoding buffer." );
return ( FALSE );
}
}
#endif
TIFFGetFieldDefaulted(tif, TIFFTAG_FILLORDER, &fillorder);
for (chunk_no = 0; chunk_no < num_chunks; chunk_no++) {
if (ascii85)
Ascii85Init();
else
breaklen = 36;
if (use_rawdata) {
if (tiled_image)
byte_count = TIFFReadRawTile(tif, chunk_no,
buf_data, chunk_size);
else
byte_count = TIFFReadRawStrip(tif, chunk_no,
buf_data, chunk_size);
if (fillorder == FILLORDER_LSB2MSB)
TIFFReverseBits(buf_data, byte_count);
} else {
if (tiled_image)
byte_count = TIFFReadEncodedTile(tif,
chunk_no, buf_data,
chunk_size);
else
byte_count = TIFFReadEncodedStrip(tif,
chunk_no, buf_data,
chunk_size);
}
if (byte_count < 0) {
TIFFError(filename, "Can't read %s %d.",
tiled_image ? "tile" : "strip", chunk_no);
if (ascii85)
Ascii85Put('\0', fd);
}
if (ascii85) {
#if defined( EXP_ASCII85ENCODER )
ascii85_l = Ascii85EncodeBlock(ascii85_p, 1, buf_data, byte_count );
if ( ascii85_l > 0 )
fwrite( ascii85_p, ascii85_l, 1, fd );
#else
for (cp = buf_data; byte_count > 0; byte_count--)
Ascii85Put(*cp++, fd);
#endif
}
else
{
for (cp = buf_data; byte_count > 0; byte_count--) {
putc(hex[((*cp)>>4)&0xf], fd);
putc(hex[(*cp)&0xf], fd);
cp++;
if (--breaklen <= 0) {
putc('\n', fd);
breaklen = 36;
}
}
}
if ( !ascii85 ) {
if ( level2 )
putc( '>', fd );
putc('\n', fd);
}
#if !defined( EXP_ASCII85ENCODER )
else
Ascii85Flush(fd);
#endif
}
#if defined( EXP_ASCII85ENCODER )
if ( ascii85_p )
_TIFFfree( ascii85_p );
#endif
_TIFFfree(buf_data);
fputs("%%EndData\n", fd);
return(TRUE);
}
