From d35747a40c7dea12de95f78a4f283a45ef687597 Mon Sep 17 00:00:00 2001
From: Warren Dukes <warren.dukes@gmail.com>
Date: Mon, 23 Feb 2004 23:41:20 +0000
Subject: import from SF CVS

git-svn-id: https://svn.musicpd.org/mpd/trunk@1 09075e82-0dd4-0310-85a5-a0d7c8717e4f
---
 src/libmad/TODO | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 src/libmad/TODO

(limited to 'src/libmad/TODO')

diff --git a/src/libmad/TODO b/src/libmad/TODO
new file mode 100644
index 000000000..b3e8ba358
--- /dev/null
+++ b/src/libmad/TODO
@@ -0,0 +1,70 @@
+
+ libmad - MPEG audio decoder library
+ Copyright (C) 2000-2003 Underbit Technologies, Inc.
+
+ $Id: TODO,v 1.1 2003/08/14 03:57:13 shank Exp $
+
+===============================================================================
+
+libmad:
+  - more API layers (buffering, PCM samples, dithering, etc.)
+  - x86 performance optimization compiler flags
+  - function documentation, general docs
+  - finish async API
+  - parse system streams?
+  - MPEG-2 MC, AAC?
+  - logarithmic multiplication?
+  - multiple frame decoding for better locality of reference?
+  - frame serial numbers, Layer III frame continuity checks
+
+fixed.h:
+  - experiment with FPM_INTEL:
+
+# if 1
+#    define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result;  \
+       asm ("shrl %3,%1\n\t"  \
+	    "shll %4,%2\n\t"  \
+	    "orl %2,%1"  \
+	    : "=rm" (__result)  \
+	    : "0" (lo), "r" (hi),  \
+	      "I" (MAD_F_SCALEBITS), "I" (32 - MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+# else
+#    define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed64hi_t __hi_;  \
+       mad_fixed64lo_t __lo_;  \
+       mad_fixed_t __result;  \
+       asm ("sall %2,%1"  \
+	    : "=r" (__hi_)  \
+	    : "0" (hi), "I" (32 - MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       asm ("shrl %2,%1"  \
+	    : "=r" (__lo_)  \
+	    : "0" (lo), "I" (MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       asm ("orl %1,%2"  \
+	    : "=rm" (__result)  \
+	    : "r" (__hi_), "0" (__lo_)  \
+	    : "cc");  \
+       __result;  \
+    })
+# endif
+
+libmad Layer I:
+  - check frame length sanity
+
+libmad Layer II:
+  - check legal bitrate/mode combinations
+  - check frame length sanity
+
+libmad Layer III:
+  - circular buffer
+  - optimize zero_part from Huffman decoding throughout
+  - MPEG 2.5 8000 Hz sf bands? mixed blocks?
+  - stereo->mono conversion optimization?
+  - enable frame-at-a-time decoding
+  - improve portability of huffman.c
+
-- 
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