rockbox/apps/codecs/libatrac
Michael Giacomelli 415546921b Make the IMDCT temporary working buffer a local variable instead of keeping one for each channel. Saves 4KB of RAM.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22339 a1c6a512-1295-4272-9138-f99709370657
2009-08-16 02:24:09 +00:00
..
atrac3.c Make the IMDCT temporary working buffer a local variable instead of keeping one for each channel. Saves 4KB of RAM. 2009-08-16 02:24:09 +00:00
atrac3.h Make the IMDCT temporary working buffer a local variable instead of keeping one for each channel. Saves 4KB of RAM. 2009-08-16 02:24:09 +00:00
atrac3data.h Support for playback of atrac3 audio in rm, in sim. 2009-08-14 17:36:57 +00:00
atrac3data_fixed.h
fixp_math.c
fixp_math.h Revert the asm fixmul stuff for now. 2009-08-14 17:31:08 +00:00
libatrac.make Support for playback of atrac3 audio in rm, in sim. 2009-08-14 17:36:57 +00:00
main.c Move main() outside atrac3.c and create atrac3.h 2009-08-14 08:24:39 +00:00
Makefile.test Move bitstream.[ch] to codecs/lib/ffmpeg_bitstream.[ch] to avoid duplicate copies across codecs. 2009-08-15 22:06:42 +00:00
README.rockbox Correct the ffmpeg revision of libatrac and write more import details. 2009-08-15 09:44:39 +00:00
SOURCES Move bitstream.[ch] to codecs/lib/ffmpeg_bitstream.[ch] to avoid duplicate copies across codecs. 2009-08-15 22:06:42 +00:00

Library: libatrac
Imported by : Mohamed Tarek
Import date : 10-August-2009

LICENSING INFORMATION

ffmpeg is licensed under the Lesser GNU General Public License.

IMPORT DETAILS

The decoder is based on ffmpeg-svn r18110 : Mar 21 2009.
Some changes were done on in order to use static VLC tables
according to this commit :
http://git.ffmpeg.org/?p=ffmpeg;a=commit;h=4c20cf13a166577d93f5b2b0abb4609c60104d33

The decoder had been modified to use fixed-point arithmetic.

TESTING

The test program should compile in any Unix-like environment using the
command "make -f Makefile.test".

For ARM targets add -DCPU_ARM to CFLAGS in Makefile.test to make use of 
the asm ARM optimisations in rockbox's mdct library.

For Big-endian targets, change -D"ROCKBOX_LITTLE_ENDIAN=1" 
to -D"ROCKBOX_BIG_ENDIAN=1" in Makefile.test.

Running "./atractest file.rm" will decode the audio data to a WAV file
called "output.wav" in the current directory.