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More try to fix 8077, BUF_USED is not a good way to determine if the buffer is healthy any more, we'll need a enw way if we need to resurrect yield_codec later

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15447 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Brandon Low 2007-11-04 02:40:24 +00:00
parent e247230e0d
commit aabd6885bf
1 changed files with 14 additions and 30 deletions
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44
apps/buffering.c
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@ -515,33 +515,6 @@ These functions are used by the buffering thread to manage buffer space.
*/
static inline bool filebuf_is_lowdata(void)
{
return BUF_USED < BUFFERING_CRITICAL_LEVEL;
}
/* Yield to the codec thread for as long as possible if it is in need of data.
Return true if the caller should break to let the buffering thread process
new queue events */
static bool yield_codec(void)
{
yield();
if (!queue_empty(&buffering_queue))
return true;
while (pcmbuf_is_lowdata() && !filebuf_is_lowdata())
{
sleep(2);
trigger_cpu_boost();
if (!queue_empty(&buffering_queue))
return true;
}
return false;
}
/* Buffer data for the given handle.
Return whether or not the buffering should continue explicitly. */
static bool buffer_handle(int handle_id)
@ -618,9 +591,20 @@ static bool buffer_handle(int handle_id)
h->available += rc;
h->filerem -= rc;
/* Stop buffering if new queue events have arrived */
if (breakable && yield_codec())
break;
yield();
/* If this is a large file, see if we need to breakor give the codec
* more time */
if (breakable) {
if (!queue_empty(&buffering_queue))
break;
if (pcmbuf_is_lowdata())
{
sleep(2);
trigger_cpu_boost();
if (!queue_empty(&buffering_queue))
break;
}
}
}
if (h->filerem == 0) {