rockbox/lib/rbcodec/codecs/flac.c, branch master

Implement time-based resume and playback start.

2014-03-10T03:12:30+00:00

This complements offset-based resume and playback start funcionality.
The implementation is global on both HWCODEC and SWCODEC.

Basically, if either the specified elapsed or offset are non-zero,
it indicates a mid-track resume.

To resume by time only, set elapsed to nonzero and offset to zero.
To resume by offset only, set offset to nonzero and elapsed to zero.

Which one the codec uses and which has priority is up to the codec;
however, using an elapsed time covers more cases:

* Codecs not able to use an offset such as VGM or other atomic
formats

* Starting playback at a nonzero elapsed time from a source that
contains no offset, such as a cuesheet

The change re-versions pretty much everything from tagcache to nvram.

Change-Id: Ic7aebb24e99a03ae99585c5e236eba960d163f38
Reviewed-on: http://gerrit.rockbox.org/516
Reviewed-by: Michael Sevakis 
Tested: Michael Sevakis

flac: fix seeking.

2013-11-18T06:45:59+00:00

As comment in code states:
"It is possible for our seek to land in the middle of audio
data that looks exactly like a frame header from a future
version of an encoder.  When that happens, frame_sync() will
return false. But there is a remote possibility that it is
properly synced at such a "future-codec frame", so to make sure,
we wait to see several "unparseable" errors in a row before
bailing out."

Currently we wait for 10 "unparseable" errors. libFLAC waits for 20.
But I've got a valid flac+cue, wherein switching to certain track
gave me 24 "unparsaeable" errors. Therefore I increased
unparseable_count to 30.

Change-Id: I4e97a5385c729adf3d5075d41ea312622c69e548
Reviewed-on: http://gerrit.rockbox.org/658
Reviewed-by: Michael Giacomelli 
Reviewed-by: Boris Gjenero 
Tested-by: Andrew Ryabinin 
Reviewed-by: Andrew Ryabinin

Purge the usage of DSP_SWITCH_FREQUENCY.

2013-05-05T04:48:40+00:00

DSP_SWITCH_FREQUENCY has been deprecated and the same enumerated value
as DSP_SET_FREQUENCY since major DSP revisions were committed. This
task should have been performed much earlier but, oh well, do it now.

Change-Id: I3f30d651b894136a07c7e17f78fc16a7d98631ff

flac: use 64 bit math to calculate the elapsed time

2012-10-25T18:04:52+00:00

avoids overflows for very long files

Change-Id: Idb1e9a411bd9007cfddbbd2d3dcf127645fa9a7c

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