107 lines
2.3 KiB
C++
107 lines
2.3 KiB
C++
/*
|
|
* Copyright (C) 2003-2013 The Music Player Daemon Project
|
|
* http://www.musicpd.org
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "MusicPipe.hxx"
|
|
#include "MusicBuffer.hxx"
|
|
#include "MusicChunk.hxx"
|
|
|
|
#ifndef NDEBUG
|
|
|
|
bool
|
|
MusicPipe::Contains(const music_chunk *chunk) const
|
|
{
|
|
const ScopeLock protect(mutex);
|
|
|
|
for (const struct music_chunk *i = head; i != nullptr; i = i->next)
|
|
if (i == chunk)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
#endif
|
|
|
|
music_chunk *
|
|
MusicPipe::Shift()
|
|
{
|
|
const ScopeLock protect(mutex);
|
|
|
|
music_chunk *chunk = head;
|
|
if (chunk != nullptr) {
|
|
assert(!chunk->IsEmpty());
|
|
|
|
head = chunk->next;
|
|
--size;
|
|
|
|
if (head == nullptr) {
|
|
assert(size == 0);
|
|
assert(tail_r == &chunk->next);
|
|
|
|
tail_r = &head;
|
|
} else {
|
|
assert(size > 0);
|
|
assert(tail_r != &chunk->next);
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
/* poison the "next" reference */
|
|
chunk->next = (music_chunk *)(void *)0x01010101;
|
|
|
|
if (size == 0)
|
|
audio_format.Clear();
|
|
#endif
|
|
}
|
|
|
|
return chunk;
|
|
}
|
|
|
|
void
|
|
MusicPipe::Clear(MusicBuffer &buffer)
|
|
{
|
|
music_chunk *chunk;
|
|
|
|
while ((chunk = Shift()) != nullptr)
|
|
buffer.Return(chunk);
|
|
}
|
|
|
|
void
|
|
MusicPipe::Push(music_chunk *chunk)
|
|
{
|
|
assert(!chunk->IsEmpty());
|
|
assert(chunk->length == 0 || chunk->audio_format.IsValid());
|
|
|
|
const ScopeLock protect(mutex);
|
|
|
|
assert(size > 0 || !audio_format.IsDefined());
|
|
assert(!audio_format.IsDefined() ||
|
|
chunk->CheckFormat(audio_format));
|
|
|
|
#ifndef NDEBUG
|
|
if (!audio_format.IsDefined() && chunk->length > 0)
|
|
audio_format = chunk->audio_format;
|
|
#endif
|
|
|
|
chunk->next = nullptr;
|
|
*tail_r = chunk;
|
|
tail_r = &chunk->next;
|
|
|
|
++size;
|
|
}
|