I've modified mem-image, I've modified mem-image sample, added line: printf("Type=%d\n",thumb->type); after the line libraw_processed_image_t *thumb = RawProcessor.dcraw_make_mem_thumb(&ret); And, yes, mem-image -e writes thumbnail as expected (in PPM format because it it bitmap). Also, our FastRawViewer (that uses LibRaw::unpack_thumb to extract thumbnails) works fine with these files. -- Alex Tutubalin @LibRaw LLC reply
I've modified mem-image sample, added line:
printf("Type=%d\n",thumb->type);after the line
And, yes, mem-image -e writes thumbnail as expected (in PPM format because it it bitmap).
Also, our FastRawViewer (that uses LibRaw::unpack_thumb to extract thumbnails) works fine with these files.