cannam@85: 
cannam@85:  libmad - MPEG audio decoder library
cannam@85:  Copyright (C) 2000-2004 Underbit Technologies, Inc.
cannam@85: 
cannam@85:  $Id: TODO,v 1.3 2004/02/05 09:02:39 rob Exp $
cannam@85: 
cannam@85: ===============================================================================
cannam@85: 
cannam@85: libmad:
cannam@85:   - more API layers (buffering, PCM samples, dithering, etc.)
cannam@85:   - x86 performance optimization compiler flags
cannam@85:   - function documentation, general docs
cannam@85:   - finish async API
cannam@85:   - parse system streams?
cannam@85:   - MPEG-2 MC, AAC?
cannam@85:   - logarithmic multiplication?
cannam@85:   - multiple frame decoding for better locality of reference?
cannam@85:   - frame serial numbers, Layer III frame continuity checks
cannam@85: 
cannam@85: fixed.h:
cannam@85:   - experiment with FPM_INTEL:
cannam@85: 
cannam@85: # if 1
cannam@85: #    define mad_f_scale64(hi, lo)  \
cannam@85:     ({ mad_fixed_t __result;  \
cannam@85:        asm ("shrl %3,%1\n\t"  \
cannam@85: 	    "shll %4,%2\n\t"  \
cannam@85: 	    "orl %2,%1"  \
cannam@85: 	    : "=rm" (__result)  \
cannam@85: 	    : "0" (lo), "r" (hi),  \
cannam@85: 	      "I" (MAD_F_SCALEBITS), "I" (32 - MAD_F_SCALEBITS)  \
cannam@85: 	    : "cc");  \
cannam@85:        __result;  \
cannam@85:     })
cannam@85: # else
cannam@85: #    define mad_f_scale64(hi, lo)  \
cannam@85:     ({ mad_fixed64hi_t __hi_;  \
cannam@85:        mad_fixed64lo_t __lo_;  \
cannam@85:        mad_fixed_t __result;  \
cannam@85:        asm ("sall %2,%1"  \
cannam@85: 	    : "=r" (__hi_)  \
cannam@85: 	    : "0" (hi), "I" (32 - MAD_F_SCALEBITS)  \
cannam@85: 	    : "cc");  \
cannam@85:        asm ("shrl %2,%1"  \
cannam@85: 	    : "=r" (__lo_)  \
cannam@85: 	    : "0" (lo), "I" (MAD_F_SCALEBITS)  \
cannam@85: 	    : "cc");  \
cannam@85:        asm ("orl %1,%2"  \
cannam@85: 	    : "=rm" (__result)  \
cannam@85: 	    : "r" (__hi_), "0" (__lo_)  \
cannam@85: 	    : "cc");  \
cannam@85:        __result;  \
cannam@85:     })
cannam@85: # endif
cannam@85: 
cannam@85: libmad Layer I:
cannam@85:   - check frame length sanity
cannam@85: 
cannam@85: libmad Layer II:
cannam@85:   - check frame length sanity
cannam@85: 
cannam@85: libmad Layer III:
cannam@85:   - circular buffer
cannam@85:   - optimize zero_part from Huffman decoding throughout
cannam@85:   - MPEG 2.5 8000 Hz sf bands? mixed blocks?
cannam@85:   - stereo->mono conversion optimization?
cannam@85:   - enable frame-at-a-time decoding
cannam@85:   - improve portability of huffman.c
cannam@85: