Added basic example

This is useful when testing RocketEditor for bugs and also provides a basic example of how Rocket works.

ogl_editor/basic_example/basic_example.c

@@ -0,0 +1,165 @@
+#include <stdio.h>
+#include <math.h>
+#include <unistd.h>
+#include "../../sync/sync.h"
+
+static struct sync_device *device;
+#if !defined(SYNC_PLAYER)
+static struct sync_cb cb;
+#endif
+
+#define sizeof_array(array) (int)(sizeof(array)/sizeof(array[0]))
+
+const float bpm = 180.0f;
+const float rpb = 8.0f;
+const float rps = bpm / 60.0f * rpb; 
+int audio_is_playing = 1;
+int curtime_ms = 0;
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+static int row_to_ms_round(int row, float rps) 
+{
+	const double newtime = ((float)(row)) / rps;
+	return (int)(floor(newtime * 1000.0f + 0.5f));
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+static float ms_to_row_f(int time_ms, float rps) 
+{
+	const double row = rps * ((float)time_ms) * 1.0f/1000.0f;
+	return row;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+static int ms_to_row_round(int time_ms, float rps) 
+{
+	const float r = ms_to_row_f(time_ms, rps);
+	return (int)(floor(r + 0.5f));
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#if !defined(SYNC_PLAYER)
+
+static void xpause(void* data, int flag)
+{
+	(void)data;
+
+	if (flag)
+		audio_is_playing = 0;
+	else
+		audio_is_playing = 1;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+static void xset_row(void* data, int row)
+{
+	(void)data;
+	int newtime_ms = row_to_ms_round(row, rps);
+	curtime_ms = newtime_ms;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+static int xis_playing(void* data)
+{
+	(void)data;
+	return audio_is_playing;
+}
+
+#endif //!SYNC_PLAYER
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+int rocket_init(const char* prefix) 
+{
+	device = sync_create_device( prefix );
+	if (!device) 
+	{
+		printf("Unable to create rocketDevice\n");
+		return 0;
+	}
+
+#if !defined( SYNC_PLAYER )
+	cb.is_playing = xis_playing;
+	cb.pause = xpause;
+	cb.set_row = xset_row;
+
+	if (sync_connect(device, "localhost", SYNC_DEFAULT_PORT)) 
+	{
+		printf("Rocket failed to connect\n");
+		return 0;
+	}
+#endif
+
+	printf("Rocket connected.\n");
+
+	return 1;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+static int rocket_update()
+{
+	int row = 0;
+
+	if (audio_is_playing)
+		curtime_ms += 16; //...60hz or gtfo
+
+#if !defined( SYNC_PLAYER )
+	row = ms_to_row_round(curtime_ms, rps);
+	if (sync_update(device, row, &cb, 0)) 
+		sync_connect(device, "localhost", SYNC_DEFAULT_PORT);
+#endif
+
+	return 1;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+static const char* s_trackNames[] = 
+{
+	"group0:track0",
+	"group0:track1",
+	"group0:track2",
+	"group0:track3",
+	"group1:track0",
+	"group1:track1",
+	"group1:track2",
+};
+
+static const struct sync_track* s_tracks[sizeof_array(s_trackNames)];
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+int main()
+{
+	int i;
+
+	if (!rocket_init("data/sync"))
+		return -1;
+
+	for (i = 0; i < sizeof_array(s_trackNames); ++i)
+		s_tracks[i] = sync_get_track(device, s_trackNames[i]);
+
+	for (;;)
+	{
+		float row_f;
+
+		rocket_update();
+
+		row_f = ms_to_row_f(curtime_ms, rps);
+
+		printf("current time %d\n", curtime_ms);
+
+		for (i = 0; i < sizeof_array(s_trackNames); ++i)
+			printf("%s %f\n", s_trackNames[i], sync_get_val(s_tracks[i], row_f));
+
+		usleep(16000);
+	}
+}
+

ogl_editor/units.lua

@@ -115,7 +115,12 @@ Program {
 	},
 
 	Frameworks = { "Cocoa", "OpenGL", "Carbon"  },
+}
 
+Program {
+	Name = "basic_example",
+	Sources = { "basic_example/basic_example.c" },
+	Depends = { "sync" },
 }
 
 local rocketBundle = OsxBundle 
@@ -138,5 +143,6 @@ else
 	Default "editor"
 end
 
+Default "basic_example"