Built SDL2_image and _mixer static

libsdl2_mixer/external/mpg123-1.25.6/src/audio.h

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+/*
+	audio: audio output interface
+
+	This is what is left after separating out libout123.
+
+	copyright ?-2015 by the mpg123 project - free software under the terms of the LGPL 2.1
+	see COPYING and AUTHORS files in distribution or http://mpg123.org
+	initially written by Michael Hipp
+*/
+
+/* 
+ * Audio 'LIB' defines
+ */
+
+
+#ifndef _MPG123_AUDIO_H_
+#define _MPG123_AUDIO_H_
+
+#include "compat.h"
+#include "mpg123.h"
+#include "out123.h"
+
+#define pitch_rate(rate)	(param.pitch == 0 ? (rate) : (long) ((param.pitch+1.0)*(rate)))
+
+mpg123_string* audio_enclist(void);
+
+void audio_capabilities(out123_handle *ao, mpg123_handle *mh);
+void print_capabilities(out123_handle *ao, mpg123_handle *mh);
+
+/*
+	Twiddle audio output rate to yield speedup/down (pitch) effect.
+	The actually achieved pitch value is stored in param.pitch.
+	Returns 1 if pitch setting succeeded, 0 otherwise.
+*/
+int set_pitch(mpg123_handle *fr, out123_handle *ao, double new_pitch);
+
+#endif
+