add DMX output

DisplayDMX.c

@@ -0,0 +1,124 @@
+#include "outdrivers.h"
+#include "notefinder.h"
+#include <stdio.h>
+#include <string.h>
+#include "parameters.h"
+#include <stdlib.h>
+#include <libusb-1.0/libusb.h>
+#include "color.h"
+#include <math.h>
+#include <unistd.h>
+
+struct DMXOutDriver
+{
+	struct libusb_device_handle *devh;
+	int did_init;
+	int byte_offset;
+	int total_leds;
+	float outamp;
+	uint8_t * last_leds;
+	volatile int readyFlag;
+};
+
+
+static void * DMXOutThread( void * v )
+{
+	struct DMXOutDriver * led = (struct DMXOutDriver*)v;
+	while(1)
+	{
+		if( led->readyFlag && led->devh )
+		{
+/*			int r = libusb_control_transfer( led->devh,
+				0x40, //reqtype
+				0xA5, //request
+				0x0100, //wValue
+				0x0000, //wIndex
+				led->last_leds,
+				(led->total_leds*3)+1,
+				1000 );*/
+			int r = libusb_control_transfer( led->devh, 0, 0xc6, 0x100, 0,
+				led->last_leds,
+				(led->total_leds*3)+led->byte_offset+1,
+				2000 );
+
+			if( r < 0 )
+			{
+				led->did_init = 0;
+				printf( "Fault sending DMXs.\n" );
+			}
+		}
+		led->readyFlag = 0;
+		usleep(100);
+	}
+	return 0;
+}
+
+static void DMXUpdate(void * id, struct NoteFinder*nf)
+{
+	int i;
+	struct DMXOutDriver * led = (struct DMXOutDriver*)id;
+
+	if( !led->did_init )
+	{
+		led->did_init = 1;
+		if( libusb_init(NULL) < 0 )
+		{
+			fprintf( stderr, "Error: Could not initialize libUSB\n" );
+//			exit( -99 );
+		}
+
+		led->devh = libusb_open_device_with_vid_pid( NULL, 0x16c0, 0x27dd );
+//		led->devh = libusb_open_device_with_vid_pid( NULL, 0x1d6b, 0x0002 );
+
+
+		if( !led->devh )
+		{
+			fprintf( stderr,  "Error: Cannot find device.\n" );
+//			exit( -98 );
+		}
+	}
+
+	while( led->readyFlag ) usleep(100);
+
+	//Advance the DMXs to this position when outputting the values.
+	for( i = 0; i < led->total_leds; i++ )	
+	{
+		int source = i;
+		led->last_leds[i*3+0 + led->byte_offset] = OutLEDs[source*3+0] * led->outamp;
+		led->last_leds[i*3+1 + led->byte_offset] = OutLEDs[source*3+1] * led->outamp; 
+		led->last_leds[i*3+2 + led->byte_offset] = OutLEDs[source*3+2] * led->outamp;
+	}
+
+	led->readyFlag = 1;
+}
+
+static void DMXParams(void * id )
+{
+	struct DMXOutDriver * led = (struct DMXOutDriver*)id;
+
+	led->total_leds = GetParameterI( "leds", 10 );
+	led->byte_offset = 32; RegisterValue(  "byte_offset", PAINT, &led->byte_offset, sizeof( led->byte_offset ) );
+	led->last_leds = malloc( 1026 );
+	led->outamp = .1; RegisterValue(  "ledoutamp", PAFLOAT, &led->outamp, sizeof( led->outamp ) );
+
+	led->did_init = 0;
+}
+
+
+static struct DriverInstances * DisplayDMX()
+{
+	struct DriverInstances * ret = malloc( sizeof( struct DriverInstances ) );
+	memset( ret, 0, sizeof( struct DriverInstances ) );
+	struct DMXOutDriver * led = ret->id = malloc( sizeof( struct DMXOutDriver ) );
+	ret->Func = DMXUpdate;
+	ret->Params = DMXParams;
+	OGCreateThread( DMXOutThread, led );
+	led->readyFlag = 0;
+	DMXParams( led );
+	return ret;
+
+}
+
+REGISTER_OUT_DRIVER(DisplayDMX);
+
+

Makefile

@@ -2,7 +2,7 @@ all : colorchord
 
 RAWDRAW:=DrawFunctions.o XDriver.o
 SOUND:=sound.o sound_alsa.o sound_pulse.o sound_null.o
-OUTS := OutputVoronoi.o DisplayArray.o OutputLinear.o DisplayPie.o DisplayNetwork.o DisplayUSB2812.o
+OUTS := OutputVoronoi.o DisplayArray.o OutputLinear.o DisplayPie.o DisplayNetwork.o DisplayUSB2812.o DisplayDMX.o
 
 WINGCC:=i586-mingw32msvc-gcc
 WINGCCFLAGS:= -lwinmm -lgdi32 -lws2_32 -O2 -ffast-math -g

default.conf

@@ -24,7 +24,8 @@ wininput = 0
 #sound_source = PULSE
 #-1 indicates left and right, 0 left, 1 right.
 sample_channel = -1
-sourcename = alsa_output.pci-0000_00_1b.0.analog-stereo.monitor
+sourcename =
+ alsa_output.pci-0000_00_1b.0.analog-stereo.monitor
 
 ##################################
 # General ColorChord properties. #

dmx.conf

@@ -0,0 +1,18 @@
+outdrivers = DisplayDMX, OutputLinear, DisplayArray
+
+byte_offset = 32
+ledoutamp = 1.0
+leds = 4
+lightx = 2
+lighty = 2
+
+note_attach_amp_iir = .3000
+note_attach_amp_iir2 = .1500
+note_attach_freq_iir = 0.3000
+steady_bright = 0
+
+skipfirst = 1
+firstval = 0
+port = 7777
+address = 192.168.0.245
+