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cache: minor simplification 

The only difference is that the MP_DBG message is not printed anymore if
the current user read position is outside of the current cache range.

(In order to handle seek_limit==0 gracefully in the normal case of
linear reading, change the comparison from ">=" to ">".)
This commit is contained in:
wm4 2014-04-09 19:07:50 +02:00
parent a967152498
commit 6ac98c042f
1 changed files with 7 additions and 11 deletions
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18
stream/cache.c
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@ -240,19 +240,15 @@ static bool cache_fill(struct priv *s)
int64_t read = s->read_filepos;
int len;
if (read < s->min_filepos || read > s->max_filepos) {
// seek...
MP_DBG(s, "Out of boundaries... seeking to %" PRId64 " \n", read);
// drop cache contents only if seeking backward or too much fwd.
// This is also done for on-disk files, since it loses the backseek cache.
// That in turn can cause major bandwidth increase and performance
// issues with e.g. mov or badly interleaved files
if (read < s->min_filepos || read >= s->max_filepos + s->seek_limit) {
MP_VERBOSE(s, "Dropping cache at pos %"PRId64", "
// drop cache contents only if seeking backward or too much fwd.
// This is also done for on-disk files, since it loses the backseek cache.
// That in turn can cause major bandwidth increase and performance
// issues with e.g. mov or badly interleaved files
if (read < s->min_filepos || read > s->max_filepos + s->seek_limit) {
MP_VERBOSE(s, "Dropping cache at pos %"PRId64", "
"cached range: %"PRId64"-%"PRId64".\n", read,
s->min_filepos, s->max_filepos);
cache_drop_contents(s);
}
cache_drop_contents(s);
}
if (stream_tell(s->stream) != s->max_filepos) {