Mac OSX player and Single tick rendering

- Use SINGLE_TICK_RENDERING mode for rendering one tick per invocation of
 _4klang_render
- Example for running player on Mac OSX

4klang_source/playosx/.gitignore

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+4klangrender
+4klang.asm
+4klang.inc
+4klang.o

4klang_source/playosx/4klangrender.c

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+#include <stdio.h>
+
+extern void _4klang_render(void*) __attribute__ ((stdcall));
+extern int _4klang_current_tick;
+
+#define	SAMPLE_RATE	44100
+#define	MAX_INSTRUMENTS	9
+#define	MAX_VOICES 1
+#define	HLD	1 ;	// can be adjusted to give crinkler	some other possibilities
+#define	BPM	100
+#define	MAX_PATTERNS 62
+#define	PATTERN_SIZE_SHIFT 4
+#define	PATTERN_SIZE (1	<< PATTERN_SIZE_SHIFT)
+#define	MAX_TICKS (MAX_PATTERNS*PATTERN_SIZE)
+#define	SAMPLES_PER_TICK (SAMPLE_RATE*4*60/(BPM*16))
+#define	DEF_LFO_NORMALIZE 0.000038
+#define	MAX_SAMPLES	(SAMPLES_PER_TICK*MAX_TICKS)
+
+float buf[SAMPLES_PER_TICK * 2];
+
+int main() {
+    FILE *fp;
+ 
+    _4klang_current_tick = 0;
+
+    fp = fdopen(fileno(stdout), "wb");
+    for(int n=0;n<MAX_TICKS;n++) {        
+        fprintf(stderr,"\nRender %d %d\n",n,_4klang_current_tick);
+        _4klang_render(buf);        
+        fwrite(buf, sizeof(buf), 1, fp);
+    }
+    fclose(fp);
+}

4klang_source/playosx/README.md

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+# 4klang rendering example for Mac OSX
+
+In here you'll find `4klangrender.c` which will call the `4klang.asm` library and render one tick
+at the time (using the `AUTHORING` flag in `4klang.inc`).
+
+The `runosx.sh` shell script contains the commands to compile the asm and link with the c example code, and create
+an executable that will ouput a stream of 32 bit floating point samples. By piping into [SOX](http://sox.sourceforge.net/) we'll get sound output.
+
+You also need [YASM](http://yasm.tortall.net/) and gcc (XCode) installed, and if everything is right you should get sound output by simply typing in your terminal (from this folder):
+
+`sh runosx.sh`

4klang_source/playosx/runosx.sh

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+echo "Copying 4klang.asm and 4klang.inc from parent dir"
+echo "Enabling SINGLE_TICK_RENDERING (and AUTHORING) flag for rendering example"
+echo "You need sox installed to get audio output"
+sed -e 's/\;\%define SINGLE_TICK_RENDERING/\%define SINGLE_TICK_RENDERING/' ../4klang.inc | \
+    sed -e 's/\;\%define AUTHORING/\%define AUTHORING/' > 4klang.inc
+cp ../4klang.asm .
+yasm -f macho 4klang.asm
+gcc -Wl,-no_pie -m32 4klang.o 4klangrender.c -o 4klangrender
+./4klangrender | sox -t raw -b 32 -e float -r 44100 -c 2 - -d