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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/spc.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/spc.c')
-rw-r--r-- | apps/codecs/spc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/apps/codecs/spc.c b/apps/codecs/spc.c index 6b21f9ad19..3b007471a9 100644 --- a/apps/codecs/spc.c +++ b/apps/codecs/spc.c | |||
@@ -560,6 +560,8 @@ enum codec_status codec_run(void) | |||
560 | return CODEC_ERROR; | 560 | return CODEC_ERROR; |
561 | 561 | ||
562 | DEBUGF("SPC: read size = 0x%lx\n",(unsigned long)buffersize); | 562 | DEBUGF("SPC: read size = 0x%lx\n",(unsigned long)buffersize); |
563 | ci->set_elapsed(0); | ||
564 | |||
563 | do | 565 | do |
564 | { | 566 | { |
565 | if (load_spc_buffer(buffer, buffersize)) { | 567 | if (load_spc_buffer(buffer, buffersize)) { |