+Lossy (DCT) codec:
+
+jdlossy.c Lossy decompressor proper.
+jdcoefct.c Buffer controller for DCT coefficient buffer.
+jdshuff.c Huffman entropy decoding for sequential JPEG.
+jdphuff.c Huffman entropy decoding for progressive JPEG.
+jddctmgr.c IDCT manager (IDCT implementation selection & control).
+jidctint.c Inverse DCT using slow-but-accurate integer method.
+jidctfst.c Inverse DCT using faster, less accurate integer method.
+jidctflt.c Inverse DCT using floating-point arithmetic.
+jidctred.c Inverse DCTs with reduced-size outputs.
+
+Lossless (spatial) codec:
+
+jdlossls.c Lossless decompressor proper.
+jddiffct.c Buffer controller for difference buffers.
+jdlhuff.c Huffman entropy decoding for lossless JPEG.
+jdpred.c Sample predictor and undifferencer.
+jdscale.c Point transformation, sample size scaling.
+