decoder/*: move to decoder/plugins/

src/decoder/DecoderControl.cxx

@@ -0,0 +1,140 @@
+/*
+ * 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();
+}