rockbox/apps/codecs/aac.c, branch master

Add codecs to librbcodec.

2012-04-25T20:13:20+00:00

Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius 
Tested-by: Nils Wallménius

AAC/M4A: Playback time wrapped after 2 hours and 42 minutes. Increase the wrap limit to about 27 hours.

2012-01-04T20:33:34+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31581 a1c6a512-1295-4272-9138-f99709370657

Commit work started in FS#12153 to put timing/position information in PCM

2011-08-28T07:45:35+00:00

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

AAC: Another gapless fix, this one for the end of the file. The real size of the last frame was lost in r29727, as indicated by Yusaku Inui in FS#12185, so bring it back. Now the decoded length of test1_nero.m4a (in FS#12185) only differs by one sample compared to Foobar2000 (Rockbox has one more leading sample, for some reason). Also moved a few lines to a better place.

2011-07-17T13:00:53+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30149 a1c6a512-1295-4272-9138-f99709370657

FS#12161: Correct the gapless processing for AAC, so that it doesn't remove too much from the start of a track. Also simplify the logic a bit.

2011-06-18T15:11:30+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30012 a1c6a512-1295-4272-9138-f99709370657

Remove unneeded update of ci->id3->frequency in aac and raac codec.

2011-04-28T21:07:28+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29794 a1c6a512-1295-4272-9138-f99709370657

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.

2011-04-27T03:08:23+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29785 a1c6a512-1295-4272-9138-f99709370657

Rework of libfaad in several areas. Allow removal of malloc with a new define FAAD_STATIC_ALLOC (in common.h). For now malloc is not fully removed but used by a few arrays needed for AAC-HE SBR+PS only. Reason to keep malloc is to have this amount of memory available for AAC-LC files which might require large m4a tables. The changes make the allocation routines much smaller, better centralized and allow to move duplicated code from aac.c/raa.c to libfaad. The rework includes removal of (now and former) unused code as well.

2011-04-24T20:19:05+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29778 a1c6a512-1295-4272-9138-f99709370657

Use dedicated function to internally reset aac decoder synthesis after seek.

2011-04-24T18:56:23+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29775 a1c6a512-1295-4272-9138-f99709370657

Optimization to latest aac decoder changes. Significantly reduce loop count in m4a_check_sample_offset() during standard playback. Before this change the loop count increased with each decoded chunk and for each frame.

2011-04-19T05:55:54+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29750 a1c6a512-1295-4272-9138-f99709370657