We use LibRaw+RawSpeed in our projects (RawDigger, FastRawViewer) with success on both Windows and Mac.
Please note, that we use 'master' (stable) branch of RawSpeed, not the up-to-date 'devel' branch.
Speedup is very different depending on file format. It is very significant for lossless-JPEG compressed files (e.g. Canon CR2) and not so big for other formats.
We use LibRaw+RawSpeed in our projects (RawDigger, FastRawViewer) with success on both Windows and Mac.
Please note, that we use 'master' (stable) branch of RawSpeed, not the up-to-date 'devel' branch.
Speedup is very different depending on file format. It is very significant for lossless-JPEG compressed files (e.g. Canon CR2) and not so big for other formats.