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Clarify track transition code in pcmbuf and playback. No functional changes yet.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23506 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jeffrey Goode 2009-11-04 03:58:33 +00:00
parent 606a333a5f
commit 5ce8e2cb0d
5 changed files with 85 additions and 85 deletions
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44
apps/codec_thread.c
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@ -416,46 +416,8 @@ void codec_init_codec_api(void)
}
/** pcmbuf track change callbacks */
/* Between the codec and PCM track change, we need to keep updating the
"elapsed" value of the previous (to the codec, but current to the
user/PCM/WPS) track, so that the progressbar reaches the end.
During that transition, the WPS will display prevtrack_id3. */
static void codec_pcmbuf_position_callback(size_t size) ICODE_ATTR;
static void codec_pcmbuf_position_callback(size_t size)
{
/* This is called from an ISR, so be quick */
unsigned int time = size * 1000 / 4 / NATIVE_FREQUENCY +
othertrack_id3->elapsed;
if (time >= othertrack_id3->length)
{
pcmbuf_set_position_callback(NULL);
othertrack_id3->elapsed = othertrack_id3->length;
}
else
othertrack_id3->elapsed = time;
}
static void codec_pcmbuf_track_changed_callback(void)
{
LOGFQUEUE("codec > pcmbuf/audio Q_AUDIO_TRACK_CHANGED");
pcmbuf_set_position_callback(NULL);
audio_post_track_change();
}
/** track change functions */
static inline void codec_gapless_track_change(void)
{
/* callback keeps the progress bar moving while the pcmbuf empties */
pcmbuf_set_position_callback(codec_pcmbuf_position_callback);
/* set the pcmbuf callback for when the track really changes */
pcmbuf_set_event_handler(codec_pcmbuf_track_changed_callback);
}
static inline void codec_crossfade_track_change(void)
{
/* Initiate automatic crossfade mode */
@ -484,8 +446,8 @@ static void codec_track_skip_done(bool was_manual)
/* shuffle mode is on, so crossfade: */
codec_crossfade_track_change();
else
/* shuffle mode is off, so do a gapless track change */
codec_gapless_track_change();
/* shuffle mode is off, so normal gapless playback */
pcmbuf_start_track_change();
}
else
/* normal crossfade: */
@ -493,7 +455,7 @@ static void codec_track_skip_done(bool was_manual)
}
else
/* normal gapless playback. */
codec_gapless_track_change();
pcmbuf_start_track_change();
}
static bool codec_load_next_track(void)