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16 commits

Author SHA1 Message Date
Michael Sevakis
7ad2cad173 Commit work started in FS#12153 to put timing/position information in PCM 
buffer chunks.

* Samples and position indication is closely associated with audio data
  instead of compensating by a latency constant. Alleviates problems with
  using the elapsed as a track indicator where it could be off by several
  steps.

* Timing is accurate throughout track even if resampling for pitch shift,
  whereas before it updated during transition latency at the normal 1:1 rate.

* Simpler PCM buffer with a constant chunk size, no linked lists.

In converting crossfade, a minor change was made to not change the WPS until
the fade-in of the incoming track, whereas before it would change upon the
start of the fade-out of the outgoing track possibly having the WPS change
with far too much lead time.

Codec changes are to set elapsed times *before* writing next PCM frame because
 time and position data last set are saved in the next committed PCM chunk. 


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30366 a1c6a512-1295-4272-9138-f99709370657
 2011-08-28 07:45:35 +00:00
Nils Wallménius
7c6056b352 FS#12140 by Sean Bartell, Make various codec stuff static. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29942 a1c6a512-1295-4272-9138-f99709370657
 2011-06-01 10:28:26 +00:00
Andree Buschmann
e75018ad66 Fix several 'variable set but not used' warnings reported from GCC 4.6.0. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29805 a1c6a512-1295-4272-9138-f99709370657
 2011-05-01 11:42:41 +00:00
Michael Sevakis
c537d5958e Commit FS#12069 - Playback rework - first stages. Gives as thorough as possible a treatment of codec management, track change and metadata logic as possible while maintaining fairly narrow focus and not rewriting everything all at once. Please see the rockbox-dev mail archive on 2011-04-25 (Playback engine rework) for a more thorough manifest of what was addressed. Plugins and codecs become incompatible. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29785 a1c6a512-1295-4272-9138-f99709370657
 2011-04-27 03:08:23 +00:00
Michael Sevakis
85e40257dc Enforce that codecs wait for their metadata in a proper-ish and consistent manner. Sort of a halfway patch; best would be to give them an internal copy of the current track information which lasts unaltered by playback until a track switch or unload. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29348 a1c6a512-1295-4272-9138-f99709370657
 2011-02-20 15:27:10 +00:00
Mohamed Tarek
4674518787 Increase wmapro decoder output sample depth to 24 bits, makes the mean error between our output and the original floating point decoder ~5e-8. (FS#11498 by Buschel) 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27703 a1c6a512-1295-4272-9138-f99709370657
 2010-08-04 23:21:35 +00:00
Mohamed Tarek
5da2304f85 Fix the sample count in wma pro. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27687 a1c6a512-1295-4272-9138-f99709370657
 2010-08-03 22:59:03 +00:00
Andree Buschmann
aa2fca384a Maintenance and minor speedup of libwmapro. Comment unused arrays, fix comment, remove tabs and introduce WMAPRO_FRACT to wma.h to remove magic numbers. Swap operands of fixmul16-call for minor speedup on ARM (+1%). 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27617 a1c6a512-1295-4272-9138-f99709370657
 2010-07-29 22:18:04 +00:00
Mohamed Tarek
5dd8c53b96 Modify the wma pro decoder to produce non-interleaved samples, and work directly on the buffers in WMAProDecCtx instead to avoid the redundant copying of the output data. ~10% speedup (-2MHz) on pp502x and ~1.5% speedup (-3.8Mhz) 
on mcf2049.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27583 a1c6a512-1295-4272-9138-f99709370657
 2010-07-26 22:03:20 +00:00
Nils Wallménius
6325ef978b codecs: mark some local variables with 'static' 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27566 a1c6a512-1295-4272-9138-f99709370657
 2010-07-25 22:24:53 +00:00
Mohamed Tarek
f98e80367d Check for errors from decode_packet in wmapro.c 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27461 a1c6a512-1295-4272-9138-f99709370657
 2010-07-17 09:55:38 +00:00
Mohamed Tarek
387af97a26 Initial cleanup for libwmapro. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27425 a1c6a512-1295-4272-9138-f99709370657
 2010-07-15 05:38:09 +00:00
Mohamed Tarek
d63abfc7eb Add WMA Pro to the main build. WMA Pro now plays on target and decodes in 151% realtime in a 320kbps sample on a sansa e200. Lots of cleanup still need to be done, and optimisations should start soon too. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27417 a1c6a512-1295-4272-9138-f99709370657
 2010-07-14 19:37:52 +00:00
Mohamed Tarek
d884af2b99 Partial conversion of the wmapro decoder to fixed point arithmetic. Currently inverse quantization & rescaling, 
imdct and windowing are all in fixed point.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27302 a1c6a512-1295-4272-9138-f99709370657
 2010-07-05 22:33:37 +00:00
Mohamed Tarek
816fca820c Wrote apps/codecs/wmapro.c and modified libwmapro to make the codec work in the sim. Neither libwmapro nor wmapro.c have been added to the main build yet, codecs.make should be edited to compile both with rockbox. 
current status of the decoder :
- Plays and seeks in the sim
- Still in floating point

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27006 a1c6a512-1295-4272-9138-f99709370657
 2010-06-21 10:48:34 +00:00
Mohamed Tarek
cd4d80aeba nomsg 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25922 a1c6a512-1295-4272-9138-f99709370657
 2010-05-09 21:42:09 +00:00