devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

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

Browse source 
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
This commit is contained in:
Michael Sevakis 2011-08-28 07:45:35 +00:00
parent 463b3ed8b2
commit 7ad2cad173
32 changed files with 969 additions and 830 deletions
Download patch file Download diff file Expand all files Collapse all files

3
apps/codecs/wma.c
View file

@ -84,7 +84,6 @@ restart_track:
% wfx.packet_size;
ci->seek_buffer(resume_offset - packet_offset);
elapsedtime = asf_get_timestamp(&i);
ci->set_elapsed(elapsedtime);
}
else
{
@ -93,6 +92,8 @@ restart_track:
elapsedtime = 0;
}
ci->set_elapsed(elapsedtime);
resume_offset = 0;
ci->configure(DSP_SWITCH_FREQUENCY, wfx.rate);
ci->configure(DSP_SET_STEREO_MODE, wfx.channels == 1 ?