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/*
* Copyright 2003-2018 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 "SharedPipeConsumer.hxx"
#include "MusicChunk.hxx"
#include "MusicPipe.hxx"
const MusicChunk *
SharedPipeConsumer::Get() noexcept
{
if (chunk != nullptr) {
if (!consumed)
return chunk;
if (chunk->next == nullptr)
return nullptr;
consumed = false;
return chunk = chunk->next.get();
} else {
/* get the first chunk from the pipe */
consumed = false;
return chunk = pipe->Peek();
}
}
bool
SharedPipeConsumer::IsConsumed(const MusicChunk &_chunk) const noexcept
{
if (chunk == nullptr)
return false;
assert(&_chunk == chunk || pipe->Contains(chunk));
if (&_chunk != chunk) {
assert(_chunk.next != nullptr);
return true;
}
return consumed && _chunk.next == nullptr;
}
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