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don't read headers unnecessarily

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This commit is contained in:
David Rose 2005-06-01 05:59:00 +00:00
parent d21af49d00
commit 741ac58078
1 changed files with 43 additions and 55 deletions
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98
pandaapp/src/indexify/indexImage.cxx
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@ -290,24 +290,10 @@ make_reduced_image(Photo *photo, PNMImage &reduced_image,
} else if (force_reduced) {
// Even though the reduced image would not be smaller, copy it
// anyway when force_reduced is true.
nout << "Reading " << photo_filename << "\n";
if (!reduced_image.read(reader)) {
nout << "Unable to read.\n";
return false;
photo_filename.set_binary();
if (!copy_file(photo_filename, reduced_dir)) {
return false;
}
reader = NULL;
reduced_filename.make_dir();
nout << "Writing " << reduced_filename << "\n";
if (!reduced_image.write(reduced_filename)) {
nout << "Unable to write.\n";
delete reader;
return false;
}
photo->_has_reduced = true;
photo->_reduced_x_size = reduced_image.get_x_size();
photo->_reduced_y_size = reduced_image.get_y_size();
} else {
// We're not making a reduced version. But maybe we still
@ -331,48 +317,50 @@ make_reduced_image(Photo *photo, PNMImage &reduced_image,
} else {
// If the reduced image already exists and is newer than the
// source image, use it.
// We still read the image header to determine its size.
PNMImageHeader photo_image;
if (!photo_image.read_header(photo_filename)) {
nout << "Unable to read " << photo_filename << "\n";
return false;
}
photo->_full_x_size = photo_image.get_x_size();
photo->_full_y_size = photo_image.get_y_size();
photo->_has_reduced = true;
if (dummy_mode) {
// In dummy mode, we may or may not actually have a reduced
// image. In either case, ignore the file and compute its
// appropriate size from the source image.
compute_reduction(photo_image, reduced_image, reduced_width, reduced_height);
photo->_reduced_x_size = reduced_image.get_x_size();
photo->_reduced_y_size = reduced_image.get_y_size();
} else if (generate_index_image) {
// Now read the reduced image from disk, so we can put it on
// the index image.
nout << "Reading " << reduced_filename << "\n";
if (!reduced_image.read(reduced_filename)) {
nout << "Unable to read.\n";
return false;
if (!force_reduced) {
// We still read the image header to determine its size.
PNMImageHeader photo_image;
if (!photo_image.read_header(photo_filename)) {
nout << "Unable to read " << photo_filename << "\n";
return false;
}
photo->_reduced_x_size = reduced_image.get_x_size();
photo->_reduced_y_size = reduced_image.get_y_size();
photo->_full_x_size = photo_image.get_x_size();
photo->_full_y_size = photo_image.get_y_size();
photo->_has_reduced = true;
} else {
// If we're not generating an index image, we don't even need
// the reduced image--just scan its header to get its size.
if (!reduced_image.read_header(reduced_filename)) {
nout << "Unable to read " << reduced_filename << "\n";
return false;
if (dummy_mode) {
// In dummy mode, we may or may not actually have a reduced
// image. In either case, ignore the file and compute its
// appropriate size from the source image.
compute_reduction(photo_image, reduced_image, reduced_width, reduced_height);
photo->_reduced_x_size = reduced_image.get_x_size();
photo->_reduced_y_size = reduced_image.get_y_size();
} else if (generate_index_image) {
// Now read the reduced image from disk, so we can put it on
// the index image.
nout << "Reading " << reduced_filename << "\n";
if (!reduced_image.read(reduced_filename)) {
nout << "Unable to read.\n";
return false;
}
photo->_reduced_x_size = reduced_image.get_x_size();
photo->_reduced_y_size = reduced_image.get_y_size();
} else {
// If we're not generating an index image, we don't even need
// the reduced image--just scan its header to get its size.
if (!reduced_image.read_header(reduced_filename)) {
nout << "Unable to read " << reduced_filename << "\n";
return false;
}
photo->_reduced_x_size = reduced_image.get_x_size();
photo->_reduced_y_size = reduced_image.get_y_size();
}
photo->_reduced_x_size = reduced_image.get_x_size();
photo->_reduced_y_size = reduced_image.get_y_size();
}
}