Nyaaori/rockbox
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
rockbox/apps/plugins/mpegplayer
History
Bertrik Sikken afc96087f8 New crossfeed algorithm for Rockbox: "Meier" crossfeed 
Emulates the basic "Meier" crossfeed (2 capacitors, 3 resistors)
as discussed in
http://www.meier-audio.homepage.t-online.de/passivefilter.htm

This crossfeed blends a bit of low-pass filtered L signal into
the R signal (and vice versa) while adding about 300 us delay
to the crossfed-signal. A difference with the crossfeed already
present in rockbox, is that this algorithm keeps the total
spectrum flat (the one currently in rockbox accentuates
low-frequency signals, making it sound a bit muffled).

This implementation is quite lightweight, just 3 multiplies per
left-right pair of samples. Has a default C implementation and
optimized assembly versions for ARM and Coldfire.

The crossfeed effect is quite subtle and is noticeable mostly
one albums that have very strong left-right separation (e.g.
one instrument only on the left, another only on the right).

In the user interface, the new crossfeed option appears as
"Meier" and is not configureable. The existing crossfeed is
renamed to "Custom" as it allows itself to be customised.

There is no entry for the user manual yet.

Change-Id: Iaa100616fe0fcd7e16f08cdb9a7f41501973eee1
2012-05-28 11:34:15 +02:00
..
libmpeg2 mpegplayer: Move libmpeg2 files into their own subdirectory so things are less cluttered. 2011-02-22 21:44:15 +00:00
alloc.c Commit to certain names for cache coherency APIs and discard the aliases. 2011-12-17 07:27:24 +00:00
audio_thread.c Rename HAVE_PITCHSCREEN to HAVE_PITCHCONTROL 2012-05-09 14:32:38 +02:00
disk_buf.c
disk_buf.h
mpeg_alloc.h
mpeg_misc.c Correct actionable offense for misappropriation of action context. 2012-03-03 07:52:13 -05:00
mpeg_misc.h
mpeg_parser.c Fix another comment typo 2011-01-04 21:28:20 +00:00
mpeg_settings.c New crossfeed algorithm for Rockbox: "Meier" crossfeed 2012-05-28 11:34:15 +02:00
mpeg_settings.h SA9200: Add YUV blitting, do full-screen updates more efficiently and properly clip partial updates. Plugin struct becomes incompatible for this target but leave version alone since it's still dev-only. 2011-01-11 01:21:31 +00:00
mpeg_stream.h
mpegplayer.c Don't reinvent ctype.h functions 2012-05-07 18:43:12 +02:00
mpegplayer.h mpegplayer: Move libmpeg2 files into their own subdirectory so things are less cluttered. 2011-02-22 21:44:15 +00:00
mpegplayer.make MIPS uses GCC 4.1.2 which was wrongly detected as supporting '-fgnu89-inline'. Now only set this parameter if GCCNUM > 401. 2011-09-08 06:23:33 +00:00
parser.h
pcm_output.c MPEGPlayer: Fixup typecasting for PCM buffer a bit. 2012-04-26 16:04:42 -04:00
pcm_output.h MPEGPlayer: Fixup typecasting for PCM buffer a bit. 2012-04-26 16:04:42 -04:00
SOURCES mpegplayer: Move libmpeg2 files into their own subdirectory so things are less cluttered. 2011-02-22 21:44:15 +00:00
stream_mgr.c MPEGPlayer graphics mutation: Implement a more visible FPS display and remove the debugging info from it. Tweak thumbnailing and printing of unavailable frames. 2011-01-03 16:41:19 +00:00
stream_mgr.h MPEGPlayer graphics mutation: Implement a more visible FPS display and remove the debugging info from it. Tweak thumbnailing and printing of unavailable frames. 2011-01-03 16:41:19 +00:00
stream_thread.h MPEGPlyaer: A bit of audio mutation. Remove a useless thread state. Take some control over the buffer away from the audio thread itself. Some atomicity corrections. 2011-01-07 05:17:28 +00:00
video_out.h MPEGPlayer graphics mutation: Implement a more visible FPS display and remove the debugging info from it. Tweak thumbnailing and printing of unavailable frames. 2011-01-03 16:41:19 +00:00
video_out_rockbox.c mpegplayer: Move libmpeg2 files into their own subdirectory so things are less cluttered. 2011-02-22 21:44:15 +00:00
video_thread.c Commit to certain names for cache coherency APIs and discard the aliases. 2011-12-17 07:27:24 +00:00