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-rw-r--r--src/decoder/DecoderControl.cxx140
1 files changed, 140 insertions, 0 deletions
diff --git a/src/decoder/DecoderControl.cxx b/src/decoder/DecoderControl.cxx
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+++ b/src/decoder/DecoderControl.cxx
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+/*
+ * Copyright (C) 2003-2014 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 "DecoderControl.hxx"
+#include "MusicPipe.hxx"
+#include "DetachedSong.hxx"
+
+#include <assert.h>
+
+DecoderControl::DecoderControl(Mutex &_mutex, Cond &_client_cond)
+ :mutex(_mutex), client_cond(_client_cond),
+ state(DecoderState::STOP),
+ command(DecoderCommand::NONE),
+ client_is_waiting(false),
+ song(nullptr),
+ replay_gain_db(0), replay_gain_prev_db(0) {}
+
+DecoderControl::~DecoderControl()
+{
+ ClearError();
+
+ delete song;
+}
+
+void
+DecoderControl::WaitForDecoder()
+{
+ assert(!client_is_waiting);
+ client_is_waiting = true;
+
+ client_cond.wait(mutex);
+
+ assert(client_is_waiting);
+ client_is_waiting = false;
+}
+
+bool
+DecoderControl::IsCurrentSong(const DetachedSong &_song) const
+{
+ switch (state) {
+ case DecoderState::STOP:
+ case DecoderState::ERROR:
+ return false;
+
+ case DecoderState::START:
+ case DecoderState::DECODE:
+ return song->IsSame(_song);
+ }
+
+ assert(false);
+ gcc_unreachable();
+}
+
+void
+DecoderControl::Start(DetachedSong *_song,
+ unsigned _start_ms, unsigned _end_ms,
+ MusicBuffer &_buffer, MusicPipe &_pipe)
+{
+ assert(_song != nullptr);
+ assert(_pipe.IsEmpty());
+
+ delete song;
+ song = _song;
+ start_ms = _start_ms;
+ end_ms = _end_ms;
+ buffer = &_buffer;
+ pipe = &_pipe;
+
+ LockSynchronousCommand(DecoderCommand::START);
+}
+
+void
+DecoderControl::Stop()
+{
+ Lock();
+
+ if (command != DecoderCommand::NONE)
+ /* Attempt to cancel the current command. If it's too
+ late and the decoder thread is already executing
+ the old command, we'll call STOP again in this
+ function (see below). */
+ SynchronousCommandLocked(DecoderCommand::STOP);
+
+ if (state != DecoderState::STOP && state != DecoderState::ERROR)
+ SynchronousCommandLocked(DecoderCommand::STOP);
+
+ Unlock();
+}
+
+bool
+DecoderControl::Seek(double where)
+{
+ assert(state != DecoderState::START);
+ assert(where >= 0.0);
+
+ if (state == DecoderState::STOP ||
+ state == DecoderState::ERROR || !seekable)
+ return false;
+
+ seek_where = where;
+ seek_error = false;
+ LockSynchronousCommand(DecoderCommand::SEEK);
+
+ return !seek_error;
+}
+
+void
+DecoderControl::Quit()
+{
+ assert(thread.IsDefined());
+
+ quit = true;
+ LockAsynchronousCommand(DecoderCommand::STOP);
+
+ thread.Join();
+}
+
+void
+DecoderControl::CycleMixRamp()
+{
+ previous_mix_ramp = std::move(mix_ramp);
+ mix_ramp.Clear();
+}