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added inline function successor()

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The new function successor() can be used to simplify a lot of code
lines and saves a lot of "i+>=buffered_chunks" checks.

git-svn-id: https://svn.musicpd.org/mpd/trunk@7285 09075e82-0dd4-0310-85a5-a0d7c8717e4f
This commit is contained in:
Max Kellermann 2008-04-12 04:14:55 +00:00 committed by Eric Wong
parent 079f13bc7d
commit 7503518bac
1 changed files with 12 additions and 11 deletions
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23
src/outputBuffer.c
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@ -39,13 +39,19 @@ void clearOutputBuffer(OutputBuffer * cb)
cb->currentChunk = -1;
}
/** return the index of the chunk after i */
static inline unsigned successor(unsigned i)
{
assert(i <= buffered_chunks);
++i;
return i == buffered_chunks ? 0 : i;
}
void flushOutputBuffer(OutputBuffer * cb)
{
if (cb->currentChunk == cb->end) {
if (((unsigned)cb->end + 1) >= buffered_chunks) {
cb->end = 0;
}
else cb->end++;
cb->end = successor(cb->end);
cb->currentChunk = -1;
}
}
@ -60,9 +66,7 @@ void outputBufferShift(OutputBuffer * cb)
assert(cb->begin != cb->end);
assert(cb->begin < buffered_chunks);
++cb->begin;
if (cb->begin >= buffered_chunks)
cb->begin = 0;
cb->begin = successor(cb->begin);
}
unsigned int outputBufferRelative(const OutputBuffer * cb, unsigned i)
@ -121,10 +125,7 @@ static int tailChunk(OutputBuffer * cb, InputStream * inStream,
if (cb->currentChunk == cb->end)
return cb->currentChunk;
next = cb->end + 1;
if (next >= buffered_chunks) {
next = 0;
}
next = successor(cb->end);
while (cb->begin == next && !dc->stop) {
if (dc->seek) {
if (seekable) {