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author | Michael Sevakis <jethead71@rockbox.org> | 2011-08-28 07:45:35 +0000 |
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committer | Michael Sevakis <jethead71@rockbox.org> | 2011-08-28 07:45:35 +0000 |
commit | 7ad2cad173ffa094bb285112582afee1c9aea4e5 (patch) | |
tree | ce23e816cfdffb1767ebe44f4f960c304d8a5fb9 /apps/codecs/wavpack.c | |
parent | 463b3ed8b2630d1b9d656dd2a52bbcbd429b4c08 (diff) | |
download | rockbox-7ad2cad173ffa094bb285112582afee1c9aea4e5.tar.gz rockbox-7ad2cad173ffa094bb285112582afee1c9aea4e5.zip |
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
Diffstat (limited to 'apps/codecs/wavpack.c')
-rw-r--r-- | apps/codecs/wavpack.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/apps/codecs/wavpack.c b/apps/codecs/wavpack.c index 32f09d53e4..4d42391fc1 100644 --- a/apps/codecs/wavpack.c +++ b/apps/codecs/wavpack.c | |||
@@ -75,7 +75,7 @@ enum codec_status codec_run(void) | |||
75 | ci->configure(DSP_SET_STEREO_MODE, nchans == 2 ? STEREO_INTERLEAVED : STEREO_MONO); | 75 | ci->configure(DSP_SET_STEREO_MODE, nchans == 2 ? STEREO_INTERLEAVED : STEREO_MONO); |
76 | sr_100 = ci->id3->frequency / 100; | 76 | sr_100 = ci->id3->frequency / 100; |
77 | 77 | ||
78 | ci->set_elapsed (0); | 78 | ci->set_elapsed (WavpackGetSampleIndex (wpc) / sr_100 * 10); |
79 | 79 | ||
80 | /* The main decoder loop */ | 80 | /* The main decoder loop */ |
81 | 81 | ||