Added AI FIFO wave logging to HLE plugin. Same for LLE plugin is coming soon. Plus some extra critical section locks in LLE plugin.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@797 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/Common/Src/WaveFile.h

@@ -0,0 +1,54 @@
+// Copyright (C) 2003-2008 Dolphin Project.
+
+// 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, version 2.0.
+
+// 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 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+
+// WaveFileWriter
+
+// Simple utility class to make it easy to write long 16-bit stereo
+// audio streams to disk.
+// Use Start() to start recording to a file, and AddStereoSamples to add wave data.
+// The float variant will convert from -1.0-1.0 range and clamp.
+// Alternatively, AddSamplesBE for big endian wave data.
+// If Stop is not called when it destructs, the destructor will call Stop().
+
+#ifndef _WAVEFILE_H
+#define _WAVEFILE_H
+
+#include <stdio.h>
+
+class WaveFileWriter
+{
+	FILE *file;
+	bool skip_silence;
+	u32 audio_size;
+	short *conv_buffer;
+	void Write(u32 value);
+	void Write4(const char *ptr);
+
+public:
+	WaveFileWriter();
+	~WaveFileWriter();
+
+	bool Start(const char *filename);
+	void Stop();
+
+	void SetSkipSilence(bool skip) { skip_silence = skip; }
+
+	void AddStereoSamples(const short *sample_data, int count);
+	void AddStereoSamplesBE(const short *sample_data, int count);  // big endian
+};
+
+#endif  // _WAVEFILE_H