12/16/99:
JavaLayer 0.0.7
- We provide an API.
Documentation is available in HTML format in the "documents"
section.
- JavaLayer
0.0.7 contains significant improvements over version
0.0. The decoder is much more faster !
- Huffman/Layer3
tables serialization added.
- New buffers
management.
- Exceptions + Utils
added.
- Bugs fixed.
- Benchmarks
added :
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System
: AMD K6-2 300Mhz (64Mo) + Windows 98
|
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BitStream
|
JVM 1.1.8
(Sun)
|
JVM 1.2.2
|
JVM 1.3b
|
|
(22.05Khz,
48Kbits/s, Stereo, 0min 20s)
|
0 min 09s
|
0 min 12 s
|
0 min 09s
|
|
(44.1Khz,
96Kbits/s, Stereo, 1min 01s)
|
0 min 35s
|
0 min 43 s
|
0 min 35s
|
|
(44.1Khz,
128Kbits/s, Stereo, 2min 34s)
|
1 min 29 s
|
1 min 40s
|
1 min 28s
|
Results
under HOTSPOT 1.0 and 2.0b have been removed from
this table (too slow for a performance JVM)
| Download JavaLayer
0.0.7 (Sources + Classes) in
ZIP format (201 Ko) |
Welcome
to Mat McGowan (UK) and Matthias Pfisterer (Germany)
to the JavaLayer project !
06/01/99:
JavaLayer 0.0
MP3toWAV
conversion runs in Real
Time under Symantec's JIT
!!. We tried Just In Time Compiler Version 3.10.094(i)
for JDK 1.1.x from Visual Cafe DE 3.0 (TrialWare).
It decoded 3 minutes of a mp3 song in 3 minutes under
an AMD K6-300. Anyway we still need help for
fast mp3 decoding implementations ...
02/28/99:
JavaLayer 0.0
Today we provide JavaLayer
V0.0. It does not play any MP3 but it allows the MP3toWAV conversion.
This is the first step in this project. We do it thanks
to free mp3 ressources available on the net:
maplay
for the object oriented coding (C++).
Fraunhofer IIS public mp3 sources (C).
wav format description
from microsoft.
The MP3 decoder works
now, but it is too slow to allow real time implementation.
We have to find best algorithms to improve it.
The New JAVA 2 platform
allows the WAV format at 44kHz (JAVA 1 : 8kHz) so
we are able to do a sound player. Moreover we intend
to make the GUI player WinAmp-skins compatible.
Download
JavaLayer V0.0 package (236 Ko ZIP)
|
