audio.cpp: Split up into smaller parts

src/soundemitter.h

@@ -0,0 +1,64 @@
+/*
+** soundemitter.h
+**
+** This file is part of mkxp.
+**
+** Copyright (C) 2014 Jonas Kulla <Nyocurio@gmail.com>
+**
+** mkxp 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.
+**
+** mkxp 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 mkxp.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef SOUNDEMITTER_H
+#define SOUNDEMITTER_H
+
+#include "intrulist.h"
+#include "al-util.h"
+#include "boost-hash.h"
+
+#include <string>
+
+#define SE_SOURCES 6
+
+struct SoundBuffer;
+
+struct SoundEmitter
+{
+	typedef BoostHash<std::string, SoundBuffer*> BufferHash;
+
+	IntruList<SoundBuffer> buffers;
+	BufferHash bufferHash;
+
+	/* Byte count sum of all cached / playing buffers */
+	uint32_t bufferBytes;
+
+	AL::Source::ID alSrcs[SE_SOURCES];
+	SoundBuffer *atchBufs[SE_SOURCES];
+
+	/* Indices of sources, sorted by priority (lowest first) */
+	size_t srcPrio[SE_SOURCES];
+
+	SoundEmitter();
+	~SoundEmitter();
+
+	void play(const std::string &filename,
+	          int volume,
+	          int pitch);
+
+	void stop();
+
+private:
+	SoundBuffer *allocateBuffer(const std::string &filename);
+};
+
+#endif // SOUNDEMITTER_H