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Diffstat (limited to 'lib/rbcodec/codecs/libmad/TODO')
-rw-r--r-- | lib/rbcodec/codecs/libmad/TODO | 69 |
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diff --git a/lib/rbcodec/codecs/libmad/TODO b/lib/rbcodec/codecs/libmad/TODO new file mode 100644 index 0000000000..a397655c6c --- /dev/null +++ b/lib/rbcodec/codecs/libmad/TODO | |||
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1 | |||
2 | libmad - MPEG audio decoder library | ||
3 | Copyright (C) 2000-2004 Underbit Technologies, Inc. | ||
4 | |||
5 | $Id$ | ||
6 | |||
7 | =============================================================================== | ||
8 | |||
9 | libmad: | ||
10 | - more API layers (buffering, PCM samples, dithering, etc.) | ||
11 | - x86 performance optimization compiler flags | ||
12 | - function documentation, general docs | ||
13 | - finish async API | ||
14 | - parse system streams? | ||
15 | - MPEG-2 MC, AAC? | ||
16 | - logarithmic multiplication? | ||
17 | - multiple frame decoding for better locality of reference? | ||
18 | - frame serial numbers, Layer III frame continuity checks | ||
19 | |||
20 | fixed.h: | ||
21 | - experiment with FPM_INTEL: | ||
22 | |||
23 | # if 1 | ||
24 | # define mad_f_scale64(hi, lo) \ | ||
25 | ({ mad_fixed_t __result; \ | ||
26 | asm ("shrl %3,%1\n\t" \ | ||
27 | "shll %4,%2\n\t" \ | ||
28 | "orl %2,%1" \ | ||
29 | : "=rm" (__result) \ | ||
30 | : "0" (lo), "r" (hi), \ | ||
31 | "I" (MAD_F_SCALEBITS), "I" (32 - MAD_F_SCALEBITS) \ | ||
32 | : "cc"); \ | ||
33 | __result; \ | ||
34 | }) | ||
35 | # else | ||
36 | # define mad_f_scale64(hi, lo) \ | ||
37 | ({ mad_fixed64hi_t __hi_; \ | ||
38 | mad_fixed64lo_t __lo_; \ | ||
39 | mad_fixed_t __result; \ | ||
40 | asm ("sall %2,%1" \ | ||
41 | : "=r" (__hi_) \ | ||
42 | : "0" (hi), "I" (32 - MAD_F_SCALEBITS) \ | ||
43 | : "cc"); \ | ||
44 | asm ("shrl %2,%1" \ | ||
45 | : "=r" (__lo_) \ | ||
46 | : "0" (lo), "I" (MAD_F_SCALEBITS) \ | ||
47 | : "cc"); \ | ||
48 | asm ("orl %1,%2" \ | ||
49 | : "=rm" (__result) \ | ||
50 | : "r" (__hi_), "0" (__lo_) \ | ||
51 | : "cc"); \ | ||
52 | __result; \ | ||
53 | }) | ||
54 | # endif | ||
55 | |||
56 | libmad Layer I: | ||
57 | - check frame length sanity | ||
58 | |||
59 | libmad Layer II: | ||
60 | - check frame length sanity | ||
61 | |||
62 | libmad Layer III: | ||
63 | - circular buffer | ||
64 | - optimize zero_part from Huffman decoding throughout | ||
65 | - MPEG 2.5 8000 Hz sf bands? mixed blocks? | ||
66 | - stereo->mono conversion optimization? | ||
67 | - enable frame-at-a-time decoding | ||
68 | - improve portability of huffman.c | ||
69 | |||