From 8f053bbdb13d5cbb723eb5de936be705a7fd4785 Mon Sep 17 00:00:00 2001
From: mid <>
Date: Sun, 30 Jun 2024 14:43:13 +0300
Subject: [PATCH] Add Save/Load functionality

---
 Makefile        |   7 +-
 README.md       |   8 +
 btn_load.bmp    | Bin 0 -> 3722 bytes
 btn_save.bmp    | Bin 0 -> 3722 bytes
 hi/microphone.c |  27 ++-
 hi/minitrace.c  | 487 ++++++++++++++++++++++++++++++++++++++++++++++++
 hi/minitrace.h  | 276 +++++++++++++++++++++++++++
 hi/node.c       | 317 +++++++++++++++++++++++++++----
 hi/node.h       |  23 +--
 hi/opus.c       |   2 +-
 hi/relay.c      |  14 +-
 hi/webcam.c     |   2 +-
 hi/webmdec.cpp  |  39 +++-
 hi/webmenc.cpp  |  36 +++-
 hi/window.c     |  31 ++-
 ui/frame.cpp    | 367 ++++++++++++++++++++++++------------
 ui/frame.h      |  22 +--
 17 files changed, 1454 insertions(+), 204 deletions(-)
 create mode 100644 btn_load.bmp
 create mode 100644 btn_save.bmp
 create mode 100644 hi/minitrace.c
 create mode 100644 hi/minitrace.h

diff --git a/Makefile b/Makefile
index 9b99b26..6e6132d 100644
--- a/Makefile
+++ b/Makefile
@@ -3,9 +3,9 @@ CXXFLAGS := -D_POSIX_C_SOURCE=200809L -Wno-narrowing -march=native -flto -Wall -
 LDFLAGS := -lwebm -lpng -lvpx -lsail -lsail-manip `pkg-config --libs pango opus libv4l2` -lportaudio -lXtst
 
 ifneq ($(RELEASE),0)
-	CXXFLAGS := $(CXXFLAGS) -O0 -g3 -fsanitize=address
+	CXXFLAGS := $(CXXFLAGS) -O0 -g3 -fsanitize=address -DMTR_ENABLED
 else
-	CXXFLAGS := $(CXXFLAGS) -O3 -fopenmp
+	CXXFLAGS := $(CXXFLAGS) -O3 -fopenmp -DMTR_ENABLED
 endif
 
 all:
@@ -19,6 +19,7 @@ all:
 	gcc $(CXXFLAGS) -std=c99 -shared -c -o opus.o hi/opus.c $(LDFLAGS)
 	gcc $(CXXFLAGS) -std=c99 -shared -c -o webcam.o hi/webcam.c $(LDFLAGS)
 	gcc $(CXXFLAGS) -std=c99 -shared -c -o scale.o hi/relay.c $(LDFLAGS)
-	gcc $(CXXFLAGS) -shared -o libcutihi.so -shared node.o webmdec.o webmenc.o window.o microphone.o mode.o img.o opus.o webcam.o scale.o $(LDFLAGS)
+	gcc $(CXXFLAGS) -std=c99 -shared -c -o minitrace.o hi/minitrace.c $(LDFLAGS)
+	gcc $(CXXFLAGS) -shared -o libcutihi.so -shared node.o webmdec.o webmenc.o window.o microphone.o mode.o img.o opus.o webcam.o scale.o minitrace.o $(LDFLAGS)
 	
 	g++ $(CXXFLAGS) -std=c++11 `wx-config --cflags base,adv,core,aui` -o cuticle ui/main.cpp ui/frame.cpp ui/textctrl.cpp ui/timeline.cpp -L./ -lcutihi $(LDFLAGS) `wx-config --libs base,adv,core,aui` 
diff --git a/README.md b/README.md
index 6d8373a..bfe2a87 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,15 @@ Features:
 * WebM decoding (VP8, VP9 video; Opus audio)
 * WebM encoding (VP8, VP9 video; Opus audio)
 * 16-bit linear RGB processing
+* Fixed 48kHz internal sample rate, 30Hz frame rate
 * Powerful editing capability brought by node graphs
 * Node keyframing
 
 Development-wise, the software currently needs a large amount of refactoring, but it's mostly capable for basic recording.
+
+Todo:
+
+* Masking polygons
+* Configuable framerate
+* More container & codec support
+* Use vaapi for accelerating video processing
diff --git a/btn_load.bmp b/btn_load.bmp
new file mode 100644
index 0000000000000000000000000000000000000000..8872782fb03ed8909f26da76eeab5e918126518f
GIT binary patch
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HcmV?d00001

diff --git a/btn_save.bmp b/btn_save.bmp
new file mode 100644
index 0000000000000000000000000000000000000000..fa49e5d43777272c946900c00dda02dfd6a98f04
GIT binary patch
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diff --git a/hi/microphone.c b/hi/microphone.c
index c499e26..be8598e 100644
--- a/hi/microphone.c
+++ b/hi/microphone.c
@@ -9,6 +9,8 @@
 #include<string.h>
 #include"microphone.h"
 
+#include"minitrace.h"
+
 #define pabufsize (48000*5)
 
 typedef struct CHiMicrophoneNode {
@@ -48,11 +50,26 @@ static int pacallback(const void *input_, void *output, unsigned long samples, c
 static int microphone_start(CHiPubNode *pubn) {
 	CHiMicrophoneNode *node = (void*) pubn;
 	
+	int dev;
+	for(dev = 0; dev < CHi_Microphone_GetSourceCount(); dev++) {
+		if(!strcmp(CHi_Microphone_GetSourceName(dev), CHi_Crawl(&pubn->sinks[0])->data.text)) {
+			break;
+		}
+	}
+	
+	if(dev == CHi_Microphone_GetSourceCount()) {
+		for(dev = 0; dev < CHi_Microphone_GetSourceCount(); dev++) {
+			if(!strcmp(CHi_Microphone_GetSourceName(dev), "default")) {
+				break;
+			}
+		}
+	}
+	
 	PaStreamParameters params = {
-		.device = pubn->sinks[0].data.vec4[0],
+		.device = dev,
 		.channelCount = 1,
 		.sampleFormat = paInt16,
-		.suggestedLatency = Pa_GetDeviceInfo(pubn->sinks[0].data.vec4[0])->defaultLowInputLatency,
+		.suggestedLatency = Pa_GetDeviceInfo(dev)->defaultLowInputLatency,
 	};
 	Pa_OpenStream(&node->paStream, &params, NULL, 48000, 0, paNoFlag, pacallback, pubn);
 	Pa_StartStream(node->paStream);
@@ -72,6 +89,8 @@ static int microphone_stop(CHiPubNode *pubn) {
 static int microphone_perform(CHiPubNode *pubn) {
 	CHiMicrophoneNode *node = (void*) pubn;
 	
+	MTR_BEGIN("CHi", "microphone_perform");
+	
 	if(pubn->sources[0].data.sample) {
 		CHi_Image_Free(pubn->sources[0].data.sample);
 	}
@@ -94,6 +113,8 @@ static int microphone_perform(CHiPubNode *pubn) {
 	
 	pubn->clean = 0;
 	
+	MTR_END("CHi", "microphone_perform");
+	
 	return 1;
 }
 
@@ -178,7 +199,7 @@ CUTIVIS int CHi_ExportWav_Stop(CHiPubNode *pubn) {
 	return 1;
 }
 CUTIVIS CHiPubNode *CHi_ExportWav() {
-	struct CHiExportWavNode *n = malloc(sizeof(*n));
+	struct CHiExportWavNode *n = calloc(1, sizeof(*n));
 	n->pubn.type = CUTIHI_T('CExp','Wave');
 	n->pubn.Start = CHi_ExportWav_Start;
 	n->pubn.Perform = exportwav_perform;
diff --git a/hi/minitrace.c b/hi/minitrace.c
new file mode 100644
index 0000000..1825c7f
--- /dev/null
+++ b/hi/minitrace.c
@@ -0,0 +1,487 @@
+// minitrace
+// Copyright 2014 by Henrik Rydgård
+// http://www.github.com/hrydgard/minitrace
+// Released under the MIT license.
+
+// See minitrace.h for basic documentation.
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifdef _WIN32
+#pragma warning (disable:4996)
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#define __thread __declspec(thread)
+#define pthread_mutex_t CRITICAL_SECTION
+#define pthread_mutex_init(a, b) InitializeCriticalSection(a)
+#define pthread_mutex_lock(a) EnterCriticalSection(a)
+#define pthread_mutex_unlock(a) LeaveCriticalSection(a)
+#define pthread_mutex_destroy(a) DeleteCriticalSection(a)
+#else
+#include <signal.h>
+#include <pthread.h>
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+
+#include "minitrace.h"
+
+#ifdef __GNUC__
+#define ATTR_NORETURN __attribute__((noreturn))
+#else
+#define ATTR_NORETURN
+#endif
+
+#define ARRAY_SIZE(x) sizeof(x)/sizeof(x[0])
+#define TRUE 1
+#define FALSE 0
+
+// Ugh, this struct is already pretty heavy.
+// Will probably need to move arguments to a second buffer to support more than one.
+typedef struct raw_event {
+	const char *name;
+	const char *cat;
+	void *id;
+	int64_t ts;
+	uint32_t pid;
+	uint32_t tid;
+	char ph;
+	mtr_arg_type arg_type;
+	const char *arg_name;
+	union {
+		const char *a_str;
+		int a_int;
+		double a_double;
+	};
+} raw_event_t;
+
+static raw_event_t *event_buffer;
+static raw_event_t *flush_buffer;
+static volatile int event_count;
+static int is_tracing = FALSE;
+static int is_flushing = FALSE;
+static int events_in_progress = 0;
+static int64_t time_offset;
+static int first_line = 1;
+static FILE *f;
+static __thread int cur_thread_id;	// Thread local storage
+static int cur_process_id;
+static pthread_mutex_t mutex;
+static pthread_mutex_t event_mutex;
+
+#define STRING_POOL_SIZE 100
+static char *str_pool[100];
+
+// forward declaration
+void mtr_flush_with_state(int);
+
+// Tiny portability layer.
+// Exposes:
+//	 get_cur_thread_id()
+//	 get_cur_process_id()
+//	 mtr_time_s()
+//	 pthread basics
+#ifdef _WIN32
+static int get_cur_thread_id() {
+	return (int)GetCurrentThreadId();
+}
+static int get_cur_process_id() {
+	return (int)GetCurrentProcessId();
+}
+
+static uint64_t _frequency = 0;
+static uint64_t _starttime = 0;
+double mtr_time_s() {
+	if (_frequency == 0) {
+		QueryPerformanceFrequency((LARGE_INTEGER*)&_frequency);
+		QueryPerformanceCounter((LARGE_INTEGER*)&_starttime);
+	}
+	__int64 time;
+	QueryPerformanceCounter((LARGE_INTEGER*)&time);
+	return ((double) (time - _starttime) / (double) _frequency);
+}
+
+// Ctrl+C handling for Windows console apps
+static BOOL WINAPI CtrlHandler(DWORD fdwCtrlType) {
+	if (is_tracing && fdwCtrlType == CTRL_C_EVENT) {
+		printf("Ctrl-C detected! Flushing trace and shutting down.\n\n");
+		mtr_flush();
+		mtr_shutdown();
+	}
+	ExitProcess(1);
+}
+
+void mtr_register_sigint_handler() {
+	// For console apps:
+	SetConsoleCtrlHandler(&CtrlHandler, TRUE);
+}
+
+#else
+
+static inline int get_cur_thread_id() {
+	return (int)(intptr_t)pthread_self();
+}
+static inline int get_cur_process_id() {
+	return (int)getpid();
+}
+
+#if defined(BLACKBERRY)
+double mtr_time_s() {
+	struct timespec time;
+	clock_gettime(CLOCK_MONOTONIC, &time); // Linux must use CLOCK_MONOTONIC_RAW due to time warps
+	return time.tv_sec + time.tv_nsec / 1.0e9;
+}
+#else
+double mtr_time_s() {
+	static time_t start;
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+	if (start == 0) {
+		start = tv.tv_sec;
+	}
+	tv.tv_sec -= start;
+	return (double)tv.tv_sec + (double)tv.tv_usec / 1000000.0;
+}
+#endif	// !BLACKBERRY
+
+static void termination_handler(int signum) ATTR_NORETURN;
+static void termination_handler(int signum) {
+	(void) signum;
+	if (is_tracing) {
+		printf("Ctrl-C detected! Flushing trace and shutting down.\n\n");
+		mtr_flush();
+		fwrite("\n]}\n", 1, 4, f);
+		fclose(f);
+	}
+	exit(1);
+}
+
+void mtr_register_sigint_handler() {
+#ifndef MTR_ENABLED
+	return;
+#endif
+	// Avoid altering set-to-be-ignored handlers while registering.
+	if (signal(SIGINT, &termination_handler) == SIG_IGN)
+		signal(SIGINT, SIG_IGN);
+}
+
+#endif
+
+void mtr_init_from_stream(void *stream) {
+#ifndef MTR_ENABLED
+	return;
+#endif
+	event_buffer = (raw_event_t *)malloc(INTERNAL_MINITRACE_BUFFER_SIZE * sizeof(raw_event_t));
+	flush_buffer = (raw_event_t *)malloc(INTERNAL_MINITRACE_BUFFER_SIZE * sizeof(raw_event_t));
+	is_flushing = FALSE;
+	is_tracing = 1;
+	event_count = 0;
+	f = (FILE *)stream;
+	const char *header = "{\"traceEvents\":[\n";
+	fwrite(header, 1, strlen(header), f);
+	time_offset = (uint64_t)(mtr_time_s() * 1000000);
+	first_line = 1;
+	pthread_mutex_init(&mutex, 0);
+	pthread_mutex_init(&event_mutex, 0);
+}
+
+void mtr_init(const char *json_file) {
+#ifndef MTR_ENABLED
+	return;
+#endif
+	mtr_init_from_stream(fopen(json_file, "wb"));
+}
+
+void mtr_shutdown() {
+	int i;
+#ifndef MTR_ENABLED
+	return;
+#endif
+	pthread_mutex_lock(&mutex);
+	is_tracing = FALSE;
+	pthread_mutex_unlock(&mutex);
+	mtr_flush_with_state(TRUE);
+
+	fwrite("\n]}\n", 1, 4, f);
+	fclose(f);
+	pthread_mutex_destroy(&mutex);
+	pthread_mutex_destroy(&event_mutex);
+	f = 0;
+	free(event_buffer);
+	event_buffer = 0;
+	free(flush_buffer);
+	flush_buffer = 0;
+	for (i = 0; i < STRING_POOL_SIZE; i++) {
+		if (str_pool[i]) {
+			free(str_pool[i]);
+			str_pool[i] = 0;
+		}
+	}
+}
+
+const char *mtr_pool_string(const char *str) {
+	int i;
+	for (i = 0; i < STRING_POOL_SIZE; i++) {
+		if (!str_pool[i]) {
+			str_pool[i] = (char*)malloc(strlen(str) + 1);
+			strcpy(str_pool[i], str);
+			return str_pool[i];
+		} else {
+			if (!strcmp(str, str_pool[i]))
+				return str_pool[i];
+		}
+	}
+	return "string pool full";
+}
+
+void mtr_start() {
+#ifndef MTR_ENABLED
+	return;
+#endif
+	pthread_mutex_lock(&mutex);
+	is_tracing = TRUE;
+	pthread_mutex_unlock(&mutex);
+}
+
+void mtr_stop() {
+#ifndef MTR_ENABLED
+	return;
+#endif
+	pthread_mutex_lock(&mutex);
+	is_tracing = FALSE;
+	pthread_mutex_unlock(&mutex);
+}
+
+// TODO: fwrite more than one line at a time.
+// Flushing is thread safe and process async
+// using double-buffering mechanism.
+// Aware: only one flushing process may be 
+// running at any point of time
+void mtr_flush_with_state(int is_last) {
+#ifndef MTR_ENABLED
+	return;
+#endif
+	int i = 0;
+	char linebuf[1024];
+	char arg_buf[1024];
+	char id_buf[256];
+	int event_count_copy = 0;
+	int events_in_progress_copy = 1;
+	raw_event_t *event_buffer_tmp = NULL;
+
+	// small critical section to swap buffers
+	// - no any new events can be spawn while
+	//   swapping since they tied to the same mutex
+	// - checks for any flushing in process
+	pthread_mutex_lock(&mutex);
+	// if not flushing already
+	if (is_flushing) {
+		pthread_mutex_unlock(&mutex);
+		return;
+	}
+	is_flushing = TRUE;
+	event_count_copy = event_count;
+	event_buffer_tmp = flush_buffer;
+	flush_buffer = event_buffer;
+	event_buffer = event_buffer_tmp;
+	event_count = 0;
+	// waiting for any unfinished events before swap
+	while (events_in_progress_copy != 0) {
+		pthread_mutex_lock(&event_mutex);
+		events_in_progress_copy = events_in_progress;
+		pthread_mutex_unlock(&event_mutex);
+	}
+	pthread_mutex_unlock(&mutex);
+
+	for (i = 0; i < event_count_copy; i++) {
+		raw_event_t *raw = &flush_buffer[i];
+		int len;
+		switch (raw->arg_type) {
+		case MTR_ARG_TYPE_INT:
+			snprintf(arg_buf, ARRAY_SIZE(arg_buf), "\"%s\":%i", raw->arg_name, raw->a_int);
+			break;
+		case MTR_ARG_TYPE_STRING_CONST:
+			snprintf(arg_buf, ARRAY_SIZE(arg_buf), "\"%s\":\"%s\"", raw->arg_name, raw->a_str);
+			break;
+		case MTR_ARG_TYPE_STRING_COPY:
+			if (strlen(raw->a_str) > 700) {
+				snprintf(arg_buf, ARRAY_SIZE(arg_buf), "\"%s\":\"%.*s\"", raw->arg_name, 700, raw->a_str);
+			} else {
+				snprintf(arg_buf, ARRAY_SIZE(arg_buf), "\"%s\":\"%s\"", raw->arg_name, raw->a_str);
+			}
+			break;
+		case MTR_ARG_TYPE_NONE:
+			arg_buf[0] = '\0';
+			break;
+		}
+		if (raw->id) {
+			switch (raw->ph) {
+			case 'S':
+			case 'T':
+			case 'F':
+				// TODO: Support full 64-bit pointers
+				snprintf(id_buf, ARRAY_SIZE(id_buf), ",\"id\":\"0x%08x\"", (uint32_t)(uintptr_t)raw->id);
+				break;
+			case 'X':
+				snprintf(id_buf, ARRAY_SIZE(id_buf), ",\"dur\":%i", (int)raw->a_double);
+				break;
+			}
+		} else {
+			id_buf[0] = 0;
+		}
+		const char *cat = raw->cat;
+#ifdef _WIN32
+		// On Windows, we often end up with backslashes in category.
+		char temp[256];
+		{
+			int len = (int)strlen(cat);
+			int i;
+			if (len > 255) len = 255;
+			for (i = 0; i < len; i++) {
+				temp[i] = cat[i] == '\\' ? '/' : cat[i];
+			}
+			temp[len] = 0;
+			cat = temp;
+		}
+#endif
+
+		len = snprintf(linebuf, ARRAY_SIZE(linebuf), "%s{\"cat\":\"%s\",\"pid\":%i,\"tid\":%i,\"ts\":%" PRId64 ",\"ph\":\"%c\",\"name\":\"%s\",\"args\":{%s}%s}",
+				first_line ? "" : ",\n",
+				cat, raw->pid, raw->tid, raw->ts - time_offset, raw->ph, raw->name, arg_buf, id_buf);
+		fwrite(linebuf, 1, len, f);
+		first_line = 0;
+
+		if (raw->arg_type == MTR_ARG_TYPE_STRING_COPY) {
+			free((void*)raw->a_str);
+		}
+		#ifdef MTR_COPY_EVENT_CATEGORY_AND_NAME
+		free(raw->name);
+		free(raw->cat);
+		#endif
+	}
+
+	pthread_mutex_lock(&mutex);
+	is_flushing = is_last;
+	pthread_mutex_unlock(&mutex);
+}
+
+void mtr_flush() {
+	mtr_flush_with_state(FALSE);
+}
+
+void internal_mtr_raw_event(const char *category, const char *name, char ph, void *id) {
+#ifndef MTR_ENABLED
+	return;
+#endif
+	pthread_mutex_lock(&mutex);
+	if (!is_tracing || event_count >= INTERNAL_MINITRACE_BUFFER_SIZE) {
+		pthread_mutex_unlock(&mutex);
+		return;
+	}
+	raw_event_t *ev = &event_buffer[event_count];
+	++event_count;
+	pthread_mutex_lock(&event_mutex);
+	++events_in_progress;
+	pthread_mutex_unlock(&event_mutex);
+	pthread_mutex_unlock(&mutex);
+
+	double ts = mtr_time_s();
+	if (!cur_thread_id) {
+		cur_thread_id = get_cur_thread_id();
+	}
+	if (!cur_process_id) {
+		cur_process_id = get_cur_process_id();
+	}
+
+#ifdef MTR_COPY_EVENT_CATEGORY_AND_NAME
+	const size_t category_len = strlen(category);
+	ev->cat = malloc(category_len + 1);
+	strcpy(ev->cat, category);
+
+	const size_t name_len = strlen(name);
+	ev->name = malloc(name_len + 1);
+	strcpy(ev->name, name);
+
+#else
+	ev->cat = category;
+	ev->name = name;
+#endif
+
+	ev->id = id;
+	ev->ph = ph;
+	if (ev->ph == 'X') {
+		double x;
+		memcpy(&x, id, sizeof(double));
+		ev->ts = (int64_t)(x * 1000000);
+		ev->a_double = (ts - x) * 1000000;
+	} else {
+		ev->ts = (int64_t)(ts * 1000000);
+	}
+	ev->tid = cur_thread_id;
+	ev->pid = cur_process_id;
+	ev->arg_type = MTR_ARG_TYPE_NONE;
+
+	pthread_mutex_lock(&event_mutex);
+	--events_in_progress;
+	pthread_mutex_unlock(&event_mutex);
+}
+
+void internal_mtr_raw_event_arg(const char *category, const char *name, char ph, void *id, mtr_arg_type arg_type, const char *arg_name, void *arg_value) {
+#ifndef MTR_ENABLED
+	return;
+#endif
+	pthread_mutex_lock(&mutex);
+	if (!is_tracing || event_count >= INTERNAL_MINITRACE_BUFFER_SIZE) {
+		pthread_mutex_unlock(&mutex);
+		return;
+	}
+	raw_event_t *ev = &event_buffer[event_count];
+	++event_count;
+	pthread_mutex_lock(&event_mutex);
+	++events_in_progress;
+	pthread_mutex_unlock(&event_mutex);
+	pthread_mutex_unlock(&mutex);
+
+	if (!cur_thread_id) {
+		cur_thread_id = get_cur_thread_id();
+	}
+	if (!cur_process_id) {
+		cur_process_id = get_cur_process_id();
+	}
+	double ts = mtr_time_s();
+
+#ifdef MTR_COPY_EVENT_CATEGORY_AND_NAME
+	const size_t category_len = strlen(category);
+	ev->cat = malloc(category_len + 1);
+	strcpy(ev->cat, category);
+
+	const size_t name_len = strlen(name);
+	ev->name = malloc(name_len + 1);
+	strcpy(ev->name, name);
+
+#else
+	ev->cat = category;
+	ev->name = name;
+#endif
+
+	ev->id = id;
+	ev->ts = (int64_t)(ts * 1000000);
+	ev->ph = ph;
+	ev->tid = cur_thread_id;
+	ev->pid = cur_process_id;
+	ev->arg_type = arg_type;
+	ev->arg_name = arg_name;
+	switch (arg_type) {
+	case MTR_ARG_TYPE_INT: ev->a_int = (int)(uintptr_t)arg_value; break;
+	case MTR_ARG_TYPE_STRING_CONST:	ev->a_str = (const char*)arg_value; break;
+	case MTR_ARG_TYPE_STRING_COPY: ev->a_str = strdup((const char*)arg_value); break;
+	case MTR_ARG_TYPE_NONE: break;
+	}
+
+	pthread_mutex_lock(&event_mutex);
+	--events_in_progress;
+	pthread_mutex_unlock(&event_mutex);
+}
+
diff --git a/hi/minitrace.h b/hi/minitrace.h
new file mode 100644
index 0000000..dddacd0
--- /dev/null
+++ b/hi/minitrace.h
@@ -0,0 +1,276 @@
+// Minitrace
+//
+// Copyright 2014 by Henrik Rydgård
+// http://www.github.com/hrydgard/minitrace
+// Released under the MIT license.
+//
+// Ultra-light dependency free library for performance tracing C/C++ applications.
+// Produces traces compatible with Google Chrome's trace viewer.
+// Simply open "about:tracing" in Chrome and load the produced JSON.
+//
+// This contains far less template magic than the original libraries from Chrome
+// because this is meant to be usable from C.
+//
+// See README.md for a tutorial.
+//
+// The trace format is documented here:
+// https://docs.google.com/document/d/1CvAClvFfyA5R-PhYUmn5OOQtYMH4h6I0nSsKchNAySU/edit
+// More:
+// http://www.altdevblogaday.com/2012/08/21/using-chrometracing-to-view-your-inline-profiling-data/
+
+#ifndef MINITRACE_H
+#define MINITRACE_H
+
+#include <inttypes.h>
+
+#ifdef MTR_BUILDING_WITH_CMAKE
+#include "minitrace_export.h"
+#else
+#define MINITRACE_EXPORT
+#endif
+
+// If MTR_ENABLED is not defined, Minitrace does nothing and has near zero overhead.
+// Preferably, set this flag in your build system. If you can't just uncomment this line.
+// #define MTR_ENABLED
+
+// By default, will collect up to 1000000 events, then you must flush.
+// It's recommended that you simply call mtr_flush on a background thread
+// occasionally. It's safe...ish.
+#define INTERNAL_MINITRACE_BUFFER_SIZE 1000000
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Initializes Minitrace. Must be called very early during startup of your executable,
+// before any MTR_ statements.
+MINITRACE_EXPORT void mtr_init(const char *json_file);
+// Same as above, but allows passing in a custom stream (FILE *), as returned by
+// fopen(). It should be opened for writing, preferably in binary mode to avoid
+// processing of line endings (i.e. the "wb" mode).
+MINITRACE_EXPORT void mtr_init_from_stream(void *stream);
+
+// Shuts down minitrace cleanly, flushing the trace buffer.
+MINITRACE_EXPORT void mtr_shutdown(void);
+
+// Lets you enable and disable Minitrace at runtime.
+// May cause strange discontinuities in the output.
+// Minitrace is enabled on startup by default.
+MINITRACE_EXPORT void mtr_start(void);
+MINITRACE_EXPORT void mtr_stop(void);
+
+// Flushes the collected data to disk, clearing the buffer for new data.
+MINITRACE_EXPORT void mtr_flush(void);
+
+// Returns the current time in seconds. Used internally by Minitrace. No caching.
+MINITRACE_EXPORT double mtr_time_s(void);
+
+// Registers a handler that will flush the trace on Ctrl+C.
+// Works on Linux and MacOSX, and in Win32 console applications.
+MINITRACE_EXPORT void mtr_register_sigint_handler(void);
+
+// Utility function that should rarely be used.
+// If str is semi dynamic, store it permanently in a small pool so we don't need to malloc it.
+// The pool fills up fast though and performance isn't great.
+// Returns a fixed string if the pool is full.
+MINITRACE_EXPORT const char *mtr_pool_string(const char *str);
+
+// Commented-out types will be supported in the future.
+typedef enum {
+	MTR_ARG_TYPE_NONE = 0,
+	MTR_ARG_TYPE_INT = 1,	// I
+	// MTR_ARG_TYPE_FLOAT = 2,  // TODO
+	// MTR_ARG_TYPE_DOUBLE = 3,  // TODO
+	MTR_ARG_TYPE_STRING_CONST = 8,	// C
+	MTR_ARG_TYPE_STRING_COPY = 9,
+	// MTR_ARG_TYPE_JSON_COPY = 10,
+} mtr_arg_type;
+
+// TODO: Add support for more than one argument (metadata) per event
+// Having more costs speed and memory.
+#define MTR_MAX_ARGS 1
+
+// Only use the macros to call these.
+MINITRACE_EXPORT void internal_mtr_raw_event(const char *category, const char *name, char ph, void *id);
+MINITRACE_EXPORT void internal_mtr_raw_event_arg(const char *category, const char *name, char ph, void *id, mtr_arg_type arg_type, const char *arg_name, void *arg_value);
+
+#ifdef MTR_ENABLED
+
+// c - category. Can be filtered by in trace viewer (or at least that's the intention).
+//     A good use is to pass __FILE__, there are macros further below that will do it for you.
+// n - name. Pass __FUNCTION__ in most cases, unless you are marking up parts of one.
+
+// Scopes. In C++, use MTR_SCOPE. In C, always match them within the same scope.
+#define MTR_BEGIN(c, n) internal_mtr_raw_event(c, n, 'B', 0)
+#define MTR_END(c, n) internal_mtr_raw_event(c, n, 'E', 0)
+#define MTR_SCOPE(c, n) MTRScopedTrace ____mtr_scope(c, n)
+#define MTR_SCOPE_LIMIT(c, n, l) MTRScopedTraceLimit ____mtr_scope(c, n, l)
+
+// Async events. Can span threads. ID identifies which events to connect in the view.
+#define MTR_START(c, n, id) internal_mtr_raw_event(c, n, 'S', (void *)(id))
+#define MTR_STEP(c, n, id, step) internal_mtr_raw_event_arg(c, n, 'T', (void *)(id), MTR_ARG_TYPE_STRING_CONST, "step", (void *)(step))
+#define MTR_FINISH(c, n, id) internal_mtr_raw_event(c, n, 'F', (void *)(id))
+
+// Flow events. Like async events, but displayed in a more fancy way in the viewer.
+#define MTR_FLOW_START(c, n, id) internal_mtr_raw_event(c, n, 's', (void *)(id))
+#define MTR_FLOW_STEP(c, n, id, step) internal_mtr_raw_event_arg(c, n, 't', (void *)(id), MTR_ARG_TYPE_STRING_CONST, "step", (void *)(step))
+#define MTR_FLOW_FINISH(c, n, id) internal_mtr_raw_event(c, n, 'f', (void *)(id))
+
+// The same macros, but with a single named argument which shows up as metadata in the viewer.
+// _I for int.
+// _C is for a const string arg.
+// _S will copy the string, freeing on flush (expensive but sometimes necessary).
+// but required if the string was generated dynamically.
+
+// Note that it's fine to match BEGIN_S with END and BEGIN with END_S, etc.
+#define MTR_BEGIN_C(c, n, aname, astrval) internal_mtr_raw_event_arg(c, n, 'B', 0, MTR_ARG_TYPE_STRING_CONST, aname, (void *)(astrval))
+#define MTR_END_C(c, n, aname, astrval) internal_mtr_raw_event_arg(c, n, 'E', 0, MTR_ARG_TYPE_STRING_CONST, aname, (void *)(astrval))
+#define MTR_SCOPE_C(c, n, aname, astrval) MTRScopedTraceArg ____mtr_scope(c, n, MTR_ARG_TYPE_STRING_CONST, aname, (void *)(astrval))
+
+#define MTR_BEGIN_S(c, n, aname, astrval) internal_mtr_raw_event_arg(c, n, 'B', 0, MTR_ARG_TYPE_STRING_COPY, aname, (void *)(astrval))
+#define MTR_END_S(c, n, aname, astrval) internal_mtr_raw_event_arg(c, n, 'E', 0, MTR_ARG_TYPE_STRING_COPY, aname, (void *)(astrval))
+#define MTR_SCOPE_S(c, n, aname, astrval) MTRScopedTraceArg ____mtr_scope(c, n, MTR_ARG_TYPE_STRING_COPY, aname, (void *)(astrval))
+
+#define MTR_BEGIN_I(c, n, aname, aintval) internal_mtr_raw_event_arg(c, n, 'B', 0, MTR_ARG_TYPE_INT, aname, (void*)(intptr_t)(aintval))
+#define MTR_END_I(c, n, aname, aintval) internal_mtr_raw_event_arg(c, n, 'E', 0, MTR_ARG_TYPE_INT, aname, (void*)(intptr_t)(aintval))
+#define MTR_SCOPE_I(c, n, aname, aintval) MTRScopedTraceArg ____mtr_scope(c, n, MTR_ARG_TYPE_INT, aname, (void*)(intptr_t)(aintval))
+
+// Instant events. For things with no duration.
+#define MTR_INSTANT(c, n) internal_mtr_raw_event(c, n, 'I', 0)
+#define MTR_INSTANT_C(c, n, aname, astrval) internal_mtr_raw_event_arg(c, n, 'I', 0, MTR_ARG_TYPE_STRING_CONST, aname, (void *)(astrval))
+#define MTR_INSTANT_I(c, n, aname, aintval) internal_mtr_raw_event_arg(c, n, 'I', 0, MTR_ARG_TYPE_INT, aname, (void *)(aintval))
+
+// Counters (can't do multi-value counters yet)
+#define MTR_COUNTER(c, n, val) internal_mtr_raw_event_arg(c, n, 'C', 0, MTR_ARG_TYPE_INT, n, (void *)(intptr_t)(val))
+
+// Metadata. Call at the start preferably. Must be const strings.
+
+#define MTR_META_PROCESS_NAME(n) internal_mtr_raw_event_arg("", "process_name", 'M', 0, MTR_ARG_TYPE_STRING_COPY, "name", (void *)(n))
+#define MTR_META_THREAD_NAME(n) internal_mtr_raw_event_arg("", "thread_name", 'M', 0, MTR_ARG_TYPE_STRING_COPY, "name", (void *)(n))
+#define MTR_META_THREAD_SORT_INDEX(i) internal_mtr_raw_event_arg("", "thread_sort_index", 'M', 0, MTR_ARG_TYPE_INT, "sort_index", (void *)(i))
+
+#else
+
+#define MTR_BEGIN(c, n)
+#define MTR_END(c, n)
+#define MTR_SCOPE(c, n)
+#define MTR_START(c, n, id)
+#define MTR_STEP(c, n, id, step)
+#define MTR_FINISH(c, n, id)
+#define MTR_FLOW_START(c, n, id)
+#define MTR_FLOW_STEP(c, n, id, step)
+#define MTR_FLOW_FINISH(c, n, id)
+#define MTR_INSTANT(c, n)
+
+#define MTR_BEGIN_C(c, n, aname, astrval)
+#define MTR_END_C(c, n, aname, astrval)
+#define MTR_SCOPE_C(c, n, aname, astrval)
+
+#define MTR_BEGIN_S(c, n, aname, astrval)
+#define MTR_END_S(c, n, aname, astrval)
+#define MTR_SCOPE_S(c, n, aname, astrval)
+
+#define MTR_BEGIN_I(c, n, aname, aintval)
+#define MTR_END_I(c, n, aname, aintval)
+#define MTR_SCOPE_I(c, n, aname, aintval)
+
+#define MTR_INSTANT(c, n)
+#define MTR_INSTANT_C(c, n, aname, astrval)
+#define MTR_INSTANT_I(c, n, aname, aintval)
+
+// Counters (can't do multi-value counters yet)
+#define MTR_COUNTER(c, n, val)
+
+// Metadata. Call at the start preferably. Must be const strings.
+
+#define MTR_META_PROCESS_NAME(n)
+
+#define MTR_META_THREAD_NAME(n)
+#define MTR_META_THREAD_SORT_INDEX(i)
+
+#endif
+
+// Shortcuts for simple function timing with automatic categories and names.
+
+#define MTR_BEGIN_FUNC() MTR_BEGIN(__FILE__, __FUNCTION__)
+#define MTR_END_FUNC() MTR_END(__FILE__, __FUNCTION__)
+#define MTR_SCOPE_FUNC() MTR_SCOPE(__FILE__, __FUNCTION__)
+#define MTR_INSTANT_FUNC() MTR_INSTANT(__FILE__, __FUNCTION__)
+#define MTR_SCOPE_FUNC_LIMIT_S(l) MTRScopedTraceLimit ____mtr_scope(__FILE__, __FUNCTION__, l)
+#define MTR_SCOPE_FUNC_LIMIT_MS(l) MTRScopedTraceLimit ____mtr_scope(__FILE__, __FUNCTION__, (double)l * 0.000001)
+
+// Same, but with a single argument of the usual types.
+#define MTR_BEGIN_FUNC_S(aname, arg) MTR_BEGIN_S(__FILE__, __FUNCTION__, aname, arg)
+#define MTR_END_FUNC_S(aname, arg) MTR_END_S(__FILE__, __FUNCTION__, aname, arg)
+#define MTR_SCOPE_FUNC_S(aname, arg) MTR_SCOPE_S(__FILE__, __FUNCTION__, aname, arg)
+
+#define MTR_BEGIN_FUNC_C(aname, arg) MTR_BEGIN_C(__FILE__, __FUNCTION__, aname, arg)
+#define MTR_END_FUNC_C(aname, arg) MTR_END_C(__FILE__, __FUNCTION__, aname, arg)
+#define MTR_SCOPE_FUNC_C(aname, arg) MTR_SCOPE_C(__FILE__, __FUNCTION__, aname, arg)
+
+#define MTR_BEGIN_FUNC_I(aname, arg) MTR_BEGIN_I(__FILE__, __FUNCTION__, aname, arg)
+#define MTR_END_FUNC_I(aname, arg) MTR_END_I(__FILE__, __FUNCTION__, aname, arg)
+#define MTR_SCOPE_FUNC_I(aname, arg) MTR_SCOPE_I(__FILE__, __FUNCTION__, aname, arg)
+
+#ifdef __cplusplus
+}
+
+#ifdef MTR_ENABLED
+// These are optimized to use X events (combined B and E). Much easier to do in C++ than in C.
+class MTRScopedTrace {
+public:
+	MTRScopedTrace(const char *category, const char *name)
+		: category_(category), name_(name) {
+		start_time_ = mtr_time_s();
+	}
+	~MTRScopedTrace() {
+		internal_mtr_raw_event(category_, name_, 'X', &start_time_);
+	}
+
+private:
+	const char *category_;
+	const char *name_;
+	double start_time_;
+};
+
+// Only outputs a block if execution time exceeded the limit.
+// TODO: This will effectively call mtr_time_s twice at the end, which is bad.
+class MTRScopedTraceLimit {
+public:
+	MTRScopedTraceLimit(const char *category, const char *name, double limit_s)
+		: category_(category), name_(name), limit_(limit_s) {
+		start_time_ = mtr_time_s();
+	}
+	~MTRScopedTraceLimit() {
+		double end_time = mtr_time_s();
+		if (end_time - start_time_ >= limit_) {
+			internal_mtr_raw_event(category_, name_, 'X', &start_time_);
+		}
+	}
+
+private:
+	const char *category_;
+	const char *name_;
+	double start_time_;
+	double limit_;
+};
+
+class MTRScopedTraceArg {
+public:
+	MTRScopedTraceArg(const char *category, const char *name, mtr_arg_type arg_type, const char *arg_name, void *arg_value)
+		: category_(category), name_(name) {
+		internal_mtr_raw_event_arg(category, name, 'B', 0, arg_type, arg_name, arg_value);
+	}
+	~MTRScopedTraceArg() {
+		internal_mtr_raw_event(category_, name_, 'E', 0);
+	}
+
+private:
+	const char *category_;
+	const char *name_;
+};
+#endif
+
+#endif
+
+#endif
diff --git a/hi/node.c b/hi/node.c
index 07aaa2b..0573a8e 100644
--- a/hi/node.c
+++ b/hi/node.c
@@ -15,6 +15,7 @@
 #include<math.h>
 #include<sched.h>
 #include<limits.h>
+#include"minitrace.h"
 
 #include"linearity.h"
 
@@ -69,18 +70,60 @@ static void adjacency_remove(CHiPubNode *source, CHiPubNode *sink) {
 }
 
 CUTIVIS CHiNodeGraph *CHi_NewNodeGraph() {
+	static int inited = 0;
+	if(!inited) {
+		inited = 1;
+		mtr_init("CHiTrace.json");
+	}
+	
 	CHiNodeGraph *ret = calloc(1, sizeof(*ret));
-	ret->count = 0;
-	ret->nodes = malloc(sizeof(*ret->nodes) * (ret->capacity = 8));
-	ret->eventOnStopComplete = NULL;
-	ret->eventOnFrameComplete = NULL;
-	ret->compilationStatus = CUTIHI_COMP_READY;
-	ret->adjacencyCount = 0;
-	ret->adjacencyCapacity = 8;
-	ret->adjacencies = malloc(sizeof(CHiAdjacency) * ret->adjacencyCapacity);
+	
+	CHi_NodeGraphReset(ret);
+	
 	return ret;
 }
 
+CUTIVIS CHiNodeGraph *CHi_NodeGraphReset(CHiNodeGraph *ng) {
+	for(size_t n = 0; n < ng->count; n++) {
+		if(ng->nodes[n]->Destroy) {
+			ng->nodes[n]->Destroy(ng->nodes[n]);
+		} else {
+			free(ng->nodes[n]);
+		}
+	}
+	
+	if(ng->nodes) {
+		free(ng->nodes);
+	}
+	if(ng->adjacencies) {
+		free(ng->adjacencies);
+	}
+	if(ng->keyframesList.keyframes) {
+		free(ng->keyframesList.keyframes);
+	}
+	
+	void *eOnStop = ng->eventOnStopComplete;
+	void *eOnFrame = ng->eventOnFrameComplete;
+	void *ud = ng->ud;
+	
+	memset(ng, 0, sizeof(*ng));
+	
+	ng->count = 0;
+	ng->nodes = malloc(sizeof(*ng->nodes) * (ng->capacity = 8));
+	ng->eventOnStopComplete = NULL;
+	ng->eventOnFrameComplete = NULL;
+	ng->compilationStatus = CUTIHI_COMP_READY;
+	ng->adjacencyCount = 0;
+	ng->adjacencyCapacity = 8;
+	ng->adjacencies = malloc(sizeof(CHiAdjacency) * ng->adjacencyCapacity);
+	
+	ng->eventOnStopComplete = eOnStop;
+	ng->eventOnFrameComplete = eOnFrame;
+	ng->ud = ud;
+	
+	return ng;
+}
+
 CUTIVIS CHiValue *CHi_Crawl(CHiValue *v) {
 	while(v->type == CUTIHI_VAL_LINKED || v->type == CUTIHI_VAL_KEYED) {
 		if(v->type == CUTIHI_VAL_LINKED) {
@@ -434,6 +477,8 @@ void *compile_thread(void *ctx_) {
 	
 	free(ctx);
 	
+	mtr_flush();
+	
 	return NULL;
 }
 CUTIVIS void CHi_BeginCompilation(CHiNodeGraph *ng) {
@@ -487,7 +532,7 @@ err:
 	return 0;
 }
 CUTIVIS CHiPubNode *CHi_Image() {
-	CHiPubNode *n = malloc(sizeof(*n));
+	CHiPubNode *n = calloc(1, sizeof(*n));
 	n->type = CUTIHI_T('CIma','ge  ');
 	n->Start = n->Stop = NULL;
 	n->Perform = image_perform;
@@ -502,6 +547,8 @@ CUTIVIS CHiPubNode *CHi_Image() {
 static int embed_perform(CHiPubNode *node) {
 	if(node->clean) return 1;
 	
+	MTR_BEGIN("CHi", "embed_perform");
+	
 	node->sources[0].type = CUTIHI_VAL_SAMPLE;
 	
 	CHiImage *main = CHi_Crawl(&node->sinks[0])->data.sample;
@@ -541,11 +588,13 @@ static int embed_perform(CHiPubNode *node) {
 		}
 	}
 	
+	MTR_END("CHi", "embed_perform");
+	
 	node->clean = 0;
 	return 1;
 }
 CUTIVIS CHiPubNode *CHi_Embed() {
-	CHiPubNode *n = malloc(sizeof(*n));
+	CHiPubNode *n = calloc(1, sizeof(*n));
 	n->type = CUTIHI_T('CEmb','ed  ');
 	n->Start = n->Stop = NULL;
 	n->Perform = embed_perform;
@@ -583,7 +632,7 @@ static int constantsample_perform(CHiPubNode *node) {
 	return 1;
 }
 CUTIVIS CHiPubNode *CHi_ConstantSample() {
-	CHiPubNode *n = malloc(sizeof(*n));
+	CHiPubNode *n = calloc(1, sizeof(*n));
 	n->type = CUTIHI_T('CCns','tCol');
 	n->Start = n->Stop = NULL;
 	n->Perform = constantsample_perform;
@@ -598,16 +647,20 @@ CUTIVIS CHiPubNode *CHi_ConstantSample() {
 static int modulate_perform(CHiPubNode *node) {
 	if(node->clean) return 1;
 	
+	MTR_BEGIN("CHi", "modulate_perform");
+	
 	node->sources[0].type = CUTIHI_VAL_SAMPLE;
 	if(node->sources->data.sample) CHi_Image_Free(node->sources->data.sample);
 	
 	node->sources->data.sample = CHi_Image_New(2, 4, 8 * 16, 16, 16, NULL);
 	
+	MTR_END("CHi", "modulate_perform");
+	
 	node->clean = 0;
 	return 1;
 }
 CUTIVIS CHiPubNode *CHi_Modulate() {
-	CHiPubNode *n = malloc(sizeof(*n));
+	CHiPubNode *n = calloc(1, sizeof(*n));
 	n->type = CUTIHI_T('CMod','ulat');
 	n->Start = n->Stop = NULL;
 	n->Perform = modulate_perform;
@@ -682,7 +735,7 @@ CUTIVIS float CHi_Time_GetDelta(CHiNodeGraph *ng) {
 	return ng->timedelta;
 }
 CUTIVIS CHiPubNode *CHi_Time() {
-	CHiPubNode *n = malloc(sizeof(*n));
+	CHiPubNode *n = calloc(1, sizeof(*n));
 	n->type = CUTIHI_T('CTim','e   ');
 	n->Start = n->Stop = NULL;
 	n->Perform = time_perform;
@@ -701,6 +754,8 @@ static PangoLayout *playout;
 static int text_perform(CHiPubNode *n) {
 	if(n->clean) return 1;
 	
+	MTR_BEGIN("CHi", "text_perform");
+	
 	if(!pfontmap) {
 		pfontmap = pango_ft2_font_map_new();
 		pango_ft2_font_map_set_resolution(PANGO_FT2_FONT_MAP(pfontmap), 72, 72);
@@ -750,11 +805,13 @@ static int text_perform(CHiPubNode *n) {
 	}
 	free(bmp.buffer);
 	
+	MTR_END("CHi", "text_perform");
+	
 	n->clean = 0;
 	return 1;
 }
 CUTIVIS CHiPubNode *CHi_Text() {
-	CHiPubNode *n = malloc(sizeof(*n));
+	CHiPubNode *n = calloc(1, sizeof(*n));
 	n->type = CUTIHI_T('CTex','t   ');
 	n->Start = n->Stop = NULL;
 	n->Perform = text_perform;
@@ -769,6 +826,8 @@ CUTIVIS CHiPubNode *CHi_Text() {
 static int mixer_perform(CHiPubNode *n) {
 	n->sources[0].type = CUTIHI_VAL_SAMPLE;
 	
+	MTR_BEGIN("CHi", "mixer_perform");
+	
 	if(n->sources[0].data.sample) {
 		CHi_Image_Free(n->sources[0].data.sample);
 		n->sources[0].data.sample = NULL;
@@ -791,6 +850,8 @@ static int mixer_perform(CHiPubNode *n) {
 		_mm_stream_si128((__m128i*) ((uintptr_t) n->sources[0].data.sample->data16 + b), _mm_adds_epi16(a0, a1));
 	}
 	
+	MTR_END("CHi", "mixer_perform");
+	
 	n->clean = 0;
 	return 1;
 }
@@ -809,7 +870,7 @@ static int preview_perform(CHiPubNode *n) {
 	return 1;
 }
 CUTIVIS CHiPubNode *CHi_Preview() {
-	CHiPubNode *n = malloc(sizeof(*n));
+	CHiPubNode *n = calloc(1, sizeof(*n));
 	n->type = CUTIHI_T('CPre','view');
 	n->Start = n->Stop = NULL;
 	n->Perform = preview_perform;
@@ -839,6 +900,7 @@ static void save_chival(CHiNodeGraph *ng, CHiSaveWriter writer, CHiValType type,
 		assert(index < ng->count);
 		
 		writer(ud, &(uint64_t) {index}, sizeof(uint64_t));
+		writer(ud, &(uint16_t) {data.linked.idx}, sizeof(uint16_t));
 	} else if(type == CUTIHI_VAL_KEYED) {
 		size_t index;
 		for(index = 0; index < ng->keyframesList.count; index++) {
@@ -852,30 +914,42 @@ static void save_chival(CHiNodeGraph *ng, CHiSaveWriter writer, CHiValType type,
 	}
 }
 
+static void load_chival(CHiNodeGraph *ng, CHiLoadReader reader, CHiValType type, CHiValueRaw *data, void *ud) {
+	if(type == CUTIHI_VAL_TEXT) {
+		uint32_t len;
+		reader(ud, &len, sizeof(len));
+		
+		data->text = malloc(len + 1);
+		
+		reader(ud, data->text, len);
+		
+		data->text[len] = 0;
+	} else if(type == CUTIHI_VAL_VEC4) {
+		reader(ud, data->vec4, sizeof(data->vec4));
+	} else if(type == CUTIHI_VAL_LINKED) {
+		uint64_t index;
+		reader(ud, &index, sizeof(index));
+		
+		data->linked.to = ng->nodes[index];
+		
+		uint16_t idx;
+		reader(ud, &idx, sizeof(idx));
+		
+		data->linked.idx = idx;
+	} else if(type == CUTIHI_VAL_KEYED) {
+		uint64_t index;
+		reader(ud, &index, sizeof(index));
+		
+		data->keyed = ng->keyframesList.keyframes[index];
+	}
+}
+
 CUTIVIS int CHi_NodeGraphSave(CHiNodeGraph *ng, CHiSaveWriter writer, void *ud) {
 	writer(ud, "\x71\x74\xCE\xA0", 4);
 	
 	writer(ud, &(float) {ng->duration}, sizeof(float));
 	writer(ud, &(float) {ng->time}, sizeof(float));
 	
-	writer(ud, &(uint64_t) {ng->count}, sizeof(uint64_t));
-	
-	for(size_t i = 0; i < ng->count; i++) {
-		CHiPubNode *node = ng->nodes[i];
-		
-		writer(ud, &(uint16_t) {node->type}, sizeof(uint16_t));
-		
-		node->Save(node, ud, writer);
-		
-		writer(ud, &(uint16_t) {node->sinkCount}, sizeof(uint16_t));
-		
-		for(size_t sink = 0; sink < node->sinkCount; sink++) {
-			writer(ud, &(uint16_t) {node->sinks[sink].type}, sizeof(uint16_t));
-			
-			save_chival(ng, writer, node->sinks[sink].type, node->sinks[sink].data, ud);
-		}
-	}
-	
 	writer(ud, &(uint64_t) {ng->keyframesList.count}, sizeof(uint64_t));
 	
 	for(size_t i = 0; i < ng->keyframesList.count; i++) {
@@ -895,5 +969,182 @@ CUTIVIS int CHi_NodeGraphSave(CHiNodeGraph *ng, CHiSaveWriter writer, void *ud)
 		writer(ud, kfs->extrapolationParameter, sizeof(kfs->extrapolationParameter));
 	}
 	
+	writer(ud, &(uint64_t) {ng->count}, sizeof(uint64_t));
+	
+	for(size_t i = 0; i < ng->count; i++) {
+		CHiPubNode *node = ng->nodes[i];
+		
+		writer(ud, &(uint64_t) {node->type}, sizeof(uint64_t));
+	}
+	
+	for(size_t i = 0; i < ng->count; i++) {
+		CHiPubNode *node = ng->nodes[i];
+		
+		if(node->Save) {
+			node->Save(node, ud, writer);
+		}
+		
+		writer(ud, &(uint16_t) {node->sinkCount}, sizeof(uint16_t));
+		
+		for(size_t sink = 0; sink < node->sinkCount; sink++) {
+			writer(ud, &(uint16_t) {node->sinks[sink].type}, sizeof(uint16_t));
+			
+			save_chival(ng, writer, node->sinks[sink].type, node->sinks[sink].data, ud);
+		}
+	}
+	
+	return 0;
+}
+
+CUTIVIS int CHi_NodeGraphLoad(CHiNodeGraph *ng, CHiLoadReader reader, void *ud) {
+	{
+		char magic[4];
+		reader(ud, magic, sizeof(magic));
+		if(memcmp(magic, "\x71\x74\xCE\xA0", 4)) {
+			return 1;
+		}
+	}
+	
+	CHi_NodeGraphReset(ng);
+	
+	reader(ud, &ng->duration, sizeof(float));
+	reader(ud, &ng->time, sizeof(float));
+	
+	{
+		uint64_t count;
+		reader(ud, &count, sizeof(count));
+		ng->keyframesList.count = count;
+	}
+	
+	for(size_t i = 0; i < ng->keyframesList.count; i++) {
+		CHiKeyframes *kfs = ng->keyframesList.keyframes[i] = calloc(1, sizeof(*kfs));
+		
+		{
+			uint16_t type;
+			reader(ud, &type, sizeof(type));
+			kfs->type = type;
+		}
+		
+		{
+			uint64_t count;
+			reader(ud, &count, sizeof(count));
+			kfs->count = count;
+		}
+		
+		kfs->times = calloc(kfs->count, sizeof(*kfs->times));
+		
+		reader(ud, kfs->times, kfs->count * sizeof(*kfs->times));
+		
+		for(size_t k = 0; k < kfs->count; k++) {
+			load_chival(ng, reader, kfs->type, &kfs->values[k], ud);
+		}
+		
+		{
+			uint16_t extrap;
+			reader(ud, &extrap, sizeof(extrap));
+			kfs->extrapolationMode = extrap;
+		}
+		
+		reader(ud, kfs->extrapolationParameter, sizeof(kfs->extrapolationParameter));
+	}
+	
+	{
+		uint64_t count;
+		reader(ud, &count, sizeof(count));
+		ng->count = count;
+	}
+	
+	ng->capacity = ng->count < 8 ? 8 : ng->count;
+	
+	ng->nodes = calloc(ng->capacity, sizeof(*ng->nodes));
+	
+	for(size_t i = 0; i < ng->count; i++) {
+		uint64_t type;
+		
+		reader(ud, &type, sizeof(type));
+		
+		CHiPubNode *n = NULL;
+		
+		if(type == CUTIHI_T('CPre','view')) {
+			n = CHi_Preview();
+		} else if(type == CUTIHI_T('CMix','er  ')) {
+			n = CHi_Mixer();
+		} else if(type == CUTIHI_T('CTex','t   ')) {
+			n = CHi_Text();
+		} else if(type == CUTIHI_T('CTim','e   ')) {
+			n = CHi_Time();
+		} else if(type == CUTIHI_T('CMod','ulat')) {
+			n = CHi_Modulate();
+		} else if(type == CUTIHI_T('CCns','tCol')) {
+			n = CHi_ConstantSample();
+		} else if(type == CUTIHI_T('CEmb','ed  ')) {
+			n = CHi_Embed();
+		} else if(type == CUTIHI_T('CIma','ge  ')) {
+			n = CHi_Image();
+		} else if(type == CUTIHI_T('CWin','dow ')) {
+			n = CHi_Window();
+		} else if(type == CUTIHI_T('CInA','udio')) {
+			n = CHi_Microphone();
+		} else if(type == CUTIHI_T('CExp','Wave')) {
+			n = CHi_ExportWav();
+		} else if(type == CUTIHI_T('CMov','ie  ')) {
+			n = CHi_Movie();
+		} else if(type == CUTIHI_T('CEnc','GVP8')) {
+			n = CHi_EncodeVP8();
+		} else if(type == CUTIHI_T('CEnc','GVP9')) {
+			n = CHi_EncodeVP9();
+		} else if(type == CUTIHI_T('CExp','Webm')) {
+			n = CHi_MuxWebm();
+		} else if(type == CUTIHI_T('CKey','hook')) {
+			n = CHi_Keyhook();
+		} else if(type == CUTIHI_T('CKey','hook')) {
+			n = CHi_Keyhook();
+		} else if(type == CUTIHI_T('CEnc','Opus')) {
+			n = CHi_EncodeOpus();
+		} else if(type == CUTIHI_T('CWeb','Cam ')) {
+			n = CHi_Camera();
+		} else if(type == CUTIHI_T('CCmp','nScl')) {
+			n = CHi_ComponentScale();
+		}
+		
+		n->ng = ng;
+		
+		if(!n) {
+			CHi_NodeGraphReset(ng);
+			puts("Error: Unknown node type!");
+			return 1;
+		}
+		
+		ng->nodes[i] = n;
+	}
+	
+	for(size_t i = 0; i < ng->count; i++) {
+		CHiPubNode *n = ng->nodes[i];
+		
+		{
+			uint16_t u16;
+			reader(ud, &u16, sizeof(u16));
+			n->sinkCount = u16;
+		}
+		
+		n->sinks = calloc(n->sinkCount, sizeof(*n->sinks));
+		
+		for(size_t s = 0; s < n->sinkCount; s++) {
+			{
+				uint16_t u16;
+				reader(ud, &u16, sizeof(u16));
+				n->sinks[s].type = u16;
+			}
+			
+			load_chival(ng, reader, n->sinks[s].type, &n->sinks[s].data, ud);
+			
+			if(n->sinks[s].type == CUTIHI_VAL_LINKED) {
+				adjacency_add(n->sinks[s].data.linked.to, n);
+			}
+		}
+	}
+	
+	update_keyed_values(ng);
+	
 	return 0;
 }
diff --git a/hi/node.h b/hi/node.h
index 0826362..885f350 100644
--- a/hi/node.h
+++ b/hi/node.h
@@ -17,6 +17,7 @@ extern "C" {
 #define CUTIHI_T(a, b) ((((uint64_t) htonl(b)) << 32) | htonl(a))
 
 typedef size_t(*CHiSaveWriter)(void *ud, const void *data, size_t len);
+typedef size_t(*CHiLoadReader)(void *ud, void *data, size_t len);
 
 typedef enum {
 	CUTIHI_VAL_NONE = 0,
@@ -68,6 +69,8 @@ typedef struct CHiPubNode {
 	int (*Stop)(struct CHiPubNode *node);
 	char clean;
 	
+	void (*Destroy)(struct CHiPubNode *node);
+	
 	int (*Save)(struct CHiPubNode *node, void *ud, CHiSaveWriter writer);
 	
 	size_t sinkCount;
@@ -137,7 +140,9 @@ typedef struct CHiNodeGraph {
 } CHiNodeGraph;
 
 CUTIVIS CHiNodeGraph *CHi_NewNodeGraph();
+CUTIVIS CHiNodeGraph *CHi_NodeGraphReset(CHiNodeGraph *ng);
 CUTIVIS int CHi_NodeGraphSave(CHiNodeGraph *ng, CHiSaveWriter writer, void *ud);
+CUTIVIS int CHi_NodeGraphLoad(CHiNodeGraph *ng, CHiLoadReader reader, void *ud);
 
 CUTIVIS void CHi_RegisterNode(CHiNodeGraph*, CHiPubNode*);
 CUTIVIS void CHi_MakeDirty(CHiNodeGraph*, CHiPubNode*);
@@ -156,22 +161,18 @@ CUTIVIS void CHi_SetDuration(CHiNodeGraph *ng, float);
 CUTIVIS void CHi_BeginCompilation(CHiNodeGraph *ng);
 CUTIVIS void CHi_StopCompilation(CHiNodeGraph *ng);
 
-#define CUTIHI_NODE_IMAGE 0
 #define CUTIHI_IMAGE_IN_FILE 0
 #define CUTIHI_IMAGE_OUT_SAMPLE 1
 CUTIVIS CHiPubNode *CHi_Image();
 
-#define CUTIHI_NODE_EMBED 1
 #define CUTIHI_EMBED_OUT_MAIN 0
 #define CUTIHI_EMBED_MAX_SMALLS 3
 CUTIVIS CHiPubNode *CHi_Embed();
 
-#define CUTIHI_NODE_CONSTANTSAMPLE 2
 #define CUTIHI_CONSTANTSAMPLE_IN_COLOR 0
 #define CUTIHI_CONSTANTSAMPLE_OUT_SAMPLE 1
 CUTIVIS CHiPubNode *CHi_ConstantSample();
 
-#define CUTIHI_NODE_MODULATE 3
 #define CUTIHI_MODULATE_IN_SAMPLE 0
 #define CUTIHI_MODULATE_BRIGHTNESS 1
 #define CUTIHI_MODULATE_CONTAST 2
@@ -179,21 +180,18 @@ CUTIVIS CHiPubNode *CHi_ConstantSample();
 #define CUTIHI_MODULATE_OUT_SAMPLE 4
 CUTIVIS CHiPubNode *CHi_Modulate();
 
-#define CUTIHI_NODE_MOVIE 4
 #define CUTIHI_MOVIE_IN_FILE 0
 #define CUTIHI_MOVIE_IN_TIME 1
 #define CUTIHI_MOVIE_IN_DELAY 2
 #define CUTIHI_MOVIE_OUT_SAMPLE 2
 CUTIVIS CHiPubNode *CHi_Movie();
 
-#define CUTIHI_NODE_TIME 5
 #define CUTIHI_TIME_OUT 0
 CUTIVIS void CHi_Time_Set(CHiNodeGraph *ng, float);
 CUTIVIS float CHi_Time_Get(CHiNodeGraph *ng);
 CUTIVIS float CHi_Time_GetDelta(CHiNodeGraph *ng);
 CUTIVIS CHiPubNode *CHi_Time();
 
-#define CUTIHI_NODE_ENCODEVP9 6
 #define CUTIHI_ENCODEVP9_IN_SAMPLE 0
 #define CUTIHI_ENCODEVP9_IN_BITRATE 1
 #define CUTIHI_ENCODEVP9_IN_BITRATE 1
@@ -204,7 +202,6 @@ CUTIVIS CHiPubNode *CHi_EncodeVP8();
 CUTIVIS int CHi_EncodeVP9_Start(CHiPubNode*);
 CUTIVIS int CHi_EncodeVP9_Stop(CHiPubNode*);
 
-#define CUTIHI_NODE_MUXWEBM 7
 #define CUTIHI_MUXWEBM_IN_BITSTREAM 0
 #define CUTIHI_MUXWEBM_IN_AUDIOBITSTREAM 1
 #define CUTIHI_MUXWEBM_IN_FILENAME 2
@@ -212,7 +209,6 @@ CUTIVIS CHiPubNode *CHi_MuxWebm();
 CUTIVIS int CHi_MuxWebm_Start(CHiPubNode*);
 CUTIVIS int CHi_MuxWebm_Stop(CHiPubNode*);
 
-#define CUTIHI_NODE_WINDOW 8
 #define CUTIHI_WINDOW_IN_WINDOWNAME 0
 #define CUTIHI_WINDOW_OUT_SAMPLE 1
 CUTIVIS CHiPubNode *CHi_Window();
@@ -222,39 +218,30 @@ CUTIVIS const char *CHi_Window_GetSourceName(size_t);
 CUTIVIS uintptr_t CHi_Window_GetSourceData(size_t);
 CUTIVIS size_t CHi_Window_GetNextSource(size_t);
 
-#define CUTIHI_NODE_MICROPHONE 9
 #define CUTIHI_MICROPHONE_IN_NAME 0
 #define CUTIHI_MICROPHONE_OUT_AUDIO 1
 CUTIVIS CHiPubNode *CHi_Microphone();
 
-#define CUTIHI_NODE_TEXT 10
 #define CUTIHI_TEXT_IN_TEXT 0
 #define CUTIHI_TEXT_OUT_SAMPLE 0
 CUTIVIS CHiPubNode *CHi_Text();
 
-#define CUTIHI_NODE_EXPORTWAV 11
 CUTIVIS CHiPubNode *CHi_ExportWav();
 CUTIVIS int CHi_ExportWav_Start(CHiPubNode*);
 CUTIVIS int CHi_ExportWav_Stop(CHiPubNode*);
 
-#define CUTIHI_NODE_ENCODEOPUS 12
 CUTIVIS CHiPubNode *CHi_EncodeOpus();
 CUTIVIS int CHi_EncodeOpus_Start(CHiPubNode*);
 CUTIVIS int CHi_EncodeOpus_Stop(CHiPubNode*);
 
-#define CUTIHI_NODE_CAMERA 13
 CUTIVIS CHiPubNode *CHi_Camera();
 
-#define CUTIHI_NODE_PREVIEW 14
 CUTIVIS CHiPubNode *CHi_Preview();
 
-#define CUTIHI_NODE_COMPONENT_SCALE 15
 CUTIVIS CHiPubNode *CHi_ComponentScale();
 
-#define CUTIHI_NODE_KEYHOOK 16
 CUTIVIS CHiPubNode *CHi_Keyhook();
 
-#define CUTIHI_NODE_MIXER 18
 CUTIVIS CHiPubNode *CHi_Mixer();
 
 CUTIVIS CHiValue *CHi_Crawl(CHiValue*);
diff --git a/hi/opus.c b/hi/opus.c
index e3da848..25fc313 100644
--- a/hi/opus.c
+++ b/hi/opus.c
@@ -53,7 +53,7 @@ static int encodeopus_perform(CHiPubNode *pubn) {
 	return 1;
 }
 CUTIVIS CHiPubNode *CHi_EncodeOpus() {
-	struct CHiEncodeOpusNode *ret = malloc(sizeof(*ret));
+	struct CHiEncodeOpusNode *ret = calloc(1, sizeof(*ret));
 	ret->pubn.type = CUTIHI_T('CEnc','Opus');
 	ret->pubn.Start = CHi_EncodeOpus_Start;
 	ret->pubn.Perform = &encodeopus_perform;
diff --git a/hi/relay.c b/hi/relay.c
index 10a1fe4..c15591a 100644
--- a/hi/relay.c
+++ b/hi/relay.c
@@ -35,7 +35,7 @@ static int scale_perform(CHiPubNode *n) {
 }
 
 CUTIVIS CHiPubNode *CHi_ComponentScale() {
-	CHiPubNode *n = malloc(sizeof(*n));
+	CHiPubNode *n = calloc(1, sizeof(*n));
 	n->type = CUTIHI_T('CCmp','nScl');
 	n->Start = n->Stop = NULL;
 	n->Perform = scale_perform;
@@ -108,11 +108,21 @@ static int keyhook_perform(CHiPubNode *n) {
 	return 1;
 }
 
+static void keyhook_destroy(CHiPubNode *pubn) {
+	CHiKeyhookNode *n = (void*) pubn;
+	
+	XRecordDisableContext(dpy, n->rc);
+	XRecordFreeContext(dpy, n->rc);
+	
+	free(n);
+}
+
 CUTIVIS CHiPubNode *CHi_Keyhook() {
-	CHiKeyhookNode *n = malloc(sizeof(*n));
+	CHiKeyhookNode *n = calloc(1, sizeof(*n));
 	n->pub.type = CUTIHI_T('CKey','hook');
 	n->pub.Start = n->pub.Stop = NULL;
 	n->pub.Perform = keyhook_perform;
+	n->pub.Destroy = keyhook_destroy;
 	n->pub.clean = 0;
 	n->pub.sinkCount = 2;
 	n->pub.sinks = calloc(sizeof(*n->pub.sinks), n->pub.sinkCount);
diff --git a/hi/webcam.c b/hi/webcam.c
index 7f942ed..54c79ce 100644
--- a/hi/webcam.c
+++ b/hi/webcam.c
@@ -125,7 +125,7 @@ CUTIVIS CHiPubNode *CHi_Camera() {
 		xioctl(camId, VIDIOC_STREAMON, &(enum v4l2_buf_type) {V4L2_BUF_TYPE_VIDEO_CAPTURE});
 	}
 	
-	CHiPubNode *pubn = malloc(sizeof(*pubn));
+	CHiPubNode *pubn = calloc(1, sizeof(*pubn));
 	pubn->type = CUTIHI_T('CWeb','Cam ');
 	pubn->clean = 0;
 	pubn->Start = pubn->Stop = NULL;
diff --git a/hi/webmdec.cpp b/hi/webmdec.cpp
index 0cb0693..fc8d29b 100644
--- a/hi/webmdec.cpp
+++ b/hi/webmdec.cpp
@@ -21,6 +21,8 @@
 
 #include<math.h>
 
+#include"minitrace.h"
+
 #include"linearity.h"
 
 struct CHiMovieNode;
@@ -50,6 +52,12 @@ struct AudioParser final : webm::Callback {
 	size_t sampleReadI = 0;
 	int16_t sampleArray[SAMPLE_ARR];
 	
+	~AudioParser() {
+		if(opus) {
+			opus_decoder_destroy(opus);
+		}
+	}
+	
 	webm::Status OnClusterBegin(const webm::ElementMetadata &metadata, const webm::Cluster &cluster, webm::Action *action) final override {
 		currentClusterTimecode = cluster.timecode.value();
 		return webm::Status(webm::Status::kOkCompleted);
@@ -272,6 +280,8 @@ webm::Status CueParser::OnCuePoint(const webm::ElementMetadata &metadata, const
 static int movie_perform(CHiPubNode *pub) {
 	CHiMovieNode *node = (CHiMovieNode*) ((uintptr_t) pub - offsetof(CHiMovieNode, pub));
 	
+	MTR_BEGIN("CHi", "movie_perform");
+	
 	int64_t t;
 	if(pub->sinks[1].type == CUTIHI_VAL_NONE) t = CHi_Time_Get(pub->ng) * 1000;
 	else t = CHi_Crawl(&pub->sinks[1])->data.vec4[0] * 1000;
@@ -295,7 +305,7 @@ static int movie_perform(CHiPubNode *pub) {
 		node->vparser.Feed(&cp, &node->vreader);
 		
 		free(node->filepathCache);
-		node->filepathCache = filepath;
+		node->filepathCache = strdup(filepath);
 		node->timeCache = std::numeric_limits<int64_t>::max();
 		
 		if(node->vcodecid == "V_VP9") {
@@ -397,15 +407,40 @@ static int movie_perform(CHiPubNode *pub) {
 	pub->sources[1].data.sample = aud;
 	
 	pub->clean = 0;
+	
+	MTR_END("CHi", "movie_perform");
+	
 	return 1;
 }
 
+static void movie_destroy(CHiPubNode *pub) {
+	CHiMovieNode *node = (CHiMovieNode*) ((uintptr_t) pub - offsetof(CHiMovieNode, pub));
+	
+	if(node->filepathCache) {
+		free(node->filepathCache);
+	}
+	
+	if(node->af) {
+		fclose(node->af);
+	}
+	
+	if(node->vf) {
+		fclose(node->vf);
+		vpx_codec_destroy(&node->codec);
+	}
+	
+	node->~CHiMovieNode();
+	
+	free(node);
+}
+
 extern "C" {
 CUTIVIS CHiPubNode *CHi_Movie() {
-	CHiMovieNode *n = (CHiMovieNode*) malloc(sizeof(*n));
+	CHiMovieNode *n = (CHiMovieNode*) calloc(1, sizeof(*n));
 	new (n) CHiMovieNode();
 	n->pub.type = CUTIHI_T('CMov','ie  ');
 	n->pub.Perform = movie_perform;
+	n->pub.Destroy = movie_destroy;
 	n->pub.clean = 0;
 	n->pub.sinkCount = 2;
 	n->pub.sinks = (CHiValue*) calloc(sizeof(*n->pub.sinks), n->pub.sinkCount);
diff --git a/hi/webmenc.cpp b/hi/webmenc.cpp
index ccdf1d6..df65040 100644
--- a/hi/webmenc.cpp
+++ b/hi/webmenc.cpp
@@ -20,6 +20,8 @@
 
 #include<string.h>
 
+#include"minitrace.h"
+
 #include"linearity.h"
 
 struct CHiEncodeVP9Node {
@@ -40,6 +42,8 @@ struct CHiEncodeVP9Node {
 static int encodevp9_perform(CHiPubNode *pub) {
 	CHiEncodeVP9Node *node = (CHiEncodeVP9Node*) ((uintptr_t) pub - offsetof(CHiEncodeVP9Node, pub));
 	
+	MTR_BEGIN("CHi", "encodevp9_perform");
+	
 	pub->sources[0].type = CUTIHI_VAL_VP9BS;
 	pub->sources[0].data.bitstream = NULL;
 	
@@ -215,16 +219,24 @@ static int encodevp9_perform(CHiPubNode *pub) {
 	
 	pub->sources[0].data.bitstream = ret;
 	
+	MTR_END("CHi", "encodevp9_perform");
+	
 	return 1;
 }
 
+static void encodevp_destroy(CHiPubNode *pub) {
+	CHiEncodeVP9Node *node = (CHiEncodeVP9Node*) ((uintptr_t) pub - offsetof(CHiEncodeVP9Node, pub));
+	free(node);
+}
+
 CUTIVIS CHiPubNode *CHi_EncodeVP8() {
-	CHiEncodeVP9Node *n = (CHiEncodeVP9Node*) malloc(sizeof(*n));
+	CHiEncodeVP9Node *n = (CHiEncodeVP9Node*) calloc(1, sizeof(*n));
 	new (n) CHiEncodeVP9Node();
 	n->pub.type = CUTIHI_T('CEnc','GVP8');
 	n->pub.Start = CHi_EncodeVP9_Start;
 	n->pub.Perform = encodevp9_perform;
 	n->pub.Stop = CHi_EncodeVP9_Stop;
+	n->pub.Destroy = encodevp_destroy;
 	n->pub.clean = 0;
 	n->pub.sinks = (CHiValue*) calloc(sizeof(*n->pub.sinks), n->pub.sinkCount = 1);
 	n->pub.sources = (CHiValue*) calloc(sizeof(*n->pub.sources), n->pub.sourceCount = 1);
@@ -234,12 +246,13 @@ CUTIVIS CHiPubNode *CHi_EncodeVP8() {
 }
 
 CUTIVIS CHiPubNode *CHi_EncodeVP9() {
-	CHiEncodeVP9Node *n = (CHiEncodeVP9Node*) malloc(sizeof(*n));
+	CHiEncodeVP9Node *n = (CHiEncodeVP9Node*) calloc(1, sizeof(*n));
 	new (n) CHiEncodeVP9Node();
 	n->pub.type = CUTIHI_T('CEnc','GVP9');
 	n->pub.Start = CHi_EncodeVP9_Start;
 	n->pub.Perform = encodevp9_perform;
 	n->pub.Stop = CHi_EncodeVP9_Stop;
+	n->pub.Destroy = encodevp_destroy;
 	n->pub.clean = 0;
 	n->pub.sinks = (CHiValue*) calloc(sizeof(*n->pub.sinks), n->pub.sinkCount = 1);
 	n->pub.sources = (CHiValue*) calloc(sizeof(*n->pub.sources), n->pub.sourceCount = 1);
@@ -296,6 +309,8 @@ CUTIVIS int CHi_EncodeVP9_Stop(CHiPubNode *pubn) {
 	_mm_free(node->outU);
 	_mm_free(node->outV);
 	
+	vpx_codec_destroy(&node->codec);
+	
 	return 1;
 }
 
@@ -312,6 +327,8 @@ struct CHiMuxWebmNode {
 static int muxwebm_perform(CHiPubNode *pubn) {
 	using namespace mkvmuxer;
 	
+	MTR_BEGIN("CHi", "muxwebm_perform");
+	
 	CHiMuxWebmNode *alln = (CHiMuxWebmNode*) pubn;
 	
 	if(pubn->sinks[1].data.linked.to) {
@@ -350,20 +367,29 @@ static int muxwebm_perform(CHiPubNode *pubn) {
 		alln->videoBacklog.pop();
 	}
 	
+	MTR_END("CHi", "muxwebm_perform");
+	
 	return 1;
 }
+static void muxwebm_destroy(CHiPubNode *pubn) {
+	CHiMuxWebmNode *n = (CHiMuxWebmNode*) pubn;
+	
+	n->~CHiMuxWebmNode();
+	
+	free(n);
+}
 CUTIVIS CHiPubNode *CHi_MuxWebm() {
-	CHiMuxWebmNode *n = (CHiMuxWebmNode*) malloc(sizeof(*n));
+	CHiMuxWebmNode *n = (CHiMuxWebmNode*) calloc(1, sizeof(*n));
+	new (n) CHiMuxWebmNode;
 	n->pub.type = CUTIHI_T('CExp','Webm');
 	n->pub.Start = CHi_MuxWebm_Start;
 	n->pub.Perform = muxwebm_perform;
+	n->pub.Destroy = muxwebm_destroy;
 	n->pub.Stop = CHi_MuxWebm_Stop;
 	n->pub.clean = 0;
 	n->pub.sinks = (CHiValue*) calloc(sizeof(*n->pub.sinks), n->pub.sinkCount = 3);
 	n->pub.sourceCount = 0;
 	n->pub.sources = NULL;
-	new (&n->audioBacklog) std::queue<CHiBSFrame>();
-	new (&n->videoBacklog) std::queue<CHiBSFrame>();
 	return &n->pub;
 }
 CUTIVIS int CHi_MuxWebm_Start(CHiPubNode *pubn) {
diff --git a/hi/window.c b/hi/window.c
index f7fde1a..b3fa567 100644
--- a/hi/window.c
+++ b/hi/window.c
@@ -18,6 +18,8 @@
 
 #include"linearity.h"
 
+#include"minitrace.h"
+
 static Display *d;
 static Window root;
 
@@ -69,6 +71,8 @@ typedef struct {
 static int window_perform(CHiPubNode *n) {
 	CHiWindowNode *w = (CHiWindowNode*) n;
 	
+	MTR_BEGIN("CHi", "window_perform");
+	
 	Window toshoot;
 	if(!find_window(d, &toshoot, CHi_Crawl(&n->sinks[0])->data.text)) return 0;
 	
@@ -112,26 +116,43 @@ static int window_perform(CHiPubNode *n) {
 	
 	n->clean = 0;
 	
+	MTR_END("CHi", "window_perform");
+	
 	return 1;
 }
 
+static void window_destroy(CHiPubNode *pubn) {
+	CHiWindowNode *n = (void*) pubn;
+	
+	if(n->vcache) {
+		XShmDetach(d, &n->shminfo);
+		shmdt(n->shminfo.shmaddr);
+		XDestroyImage(n->ximg);
+	}
+	
+	free(pubn);
+}
+
 CUTIVIS CHiPubNode *CHi_Window() {
 	if(!d) {
 		d = XOpenDisplay(NULL);
 		root = RootWindow(d, DefaultScreen(d));
 	}
 	
-	CHiWindowNode *n = malloc(sizeof(*n));
+	CHiWindowNode *n = calloc(1, sizeof(*n));
 	n->pub.type = CUTIHI_T('CWin','dow ');
 	n->pub.Start = n->pub.Stop = NULL;
 	n->pub.Perform = window_perform;
+	n->pub.Destroy = window_destroy;
 	n->pub.clean = 0;
 	n->pub.sinkCount = 1;
 	n->pub.sinks = calloc(sizeof(*n->pub.sinks), 1);
 	n->pub.sourceCount = 1;
 	n->pub.sources = calloc(sizeof(*n->pub.sources), 1);
+	
 	n->xcache = 0;
 	n->vcache = NULL;
+	
 	return &n->pub;
 }
 
@@ -147,6 +168,8 @@ CUTIVIS size_t CHi_Window_GetSourceCount() {
 	
 	int status = XGetWindowProperty(d, root, atom, 0L, ~0L, 0, AnyPropertyType, &actualType, &format, &numItems, &bytesAfter, (unsigned char**) &list);
 	
+	XFree(list);
+	
 	return status >= Success ? numItems : 0;
 }
 
@@ -163,6 +186,8 @@ CUTIVIS const char *CHi_Window_GetSourceName(size_t idx) {
 	int status = XGetWindowProperty(d, root, atom, 0L, ~0L, 0, AnyPropertyType, &actualType, &format, &numItems, &bytesAfter, (unsigned char**) &list);
 	
 	if(status >= Success) {
+		XFree(list);
+		
 		status = XGetWMName(d, list[idx], &windowName);
 		if(status >= Success) {
 			found = 1;
@@ -183,7 +208,9 @@ CUTIVIS uintptr_t CHi_Window_GetSourceData(size_t idx) {
 	int status = XGetWindowProperty(d, root, atom, 0L, ~0L, 0, AnyPropertyType, &actualType, &format, &numItems, &bytesAfter, (unsigned char**) &list);
 	
 	if(status >= Success) {
-		return list[idx];
+		Window ret = list[idx];
+		XFree(list);
+		return ret;
 	}
 	
 	return 0;
diff --git a/ui/frame.cpp b/ui/frame.cpp
index a195d43..945f37d 100644
--- a/ui/frame.cpp
+++ b/ui/frame.cpp
@@ -28,12 +28,97 @@
 
 #include<hi/linearity.h>
 
+static void ShapeGrNode(GrNode *gn) {
+	if(gn->logical->type == CUTIHI_T('CPre','view')) {
+		gn->name = "Preview";
+		gn->sinks = {{"Video", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CMix','er  ')) {
+		gn->name = "Mixer";
+		gn->sinks = {{"Sink 1", GrNode::Port::Type::SAMPLE}, {"Sink 2", GrNode::Port::Type::SAMPLE}};
+		gn->sources = {{"Audio", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CTex','t   ')) {
+		gn->name = "Text";
+		gn->sinks = {{"Text", GrNode::Port::Type::TEXT}, {"Color", GrNode::Port::Type::COLOR}, {"DPI", GrNode::Port::Type::VEC1}};
+		gn->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CTim','e   ')) {
+		gn->name = "Time";
+		gn->sinks = {};
+		gn->sources = {{"t", GrNode::Port::Type::VEC1}};
+	} else if(gn->logical->type == CUTIHI_T('CMod','ulat')) {
+		gn->name = "Modulate";
+		gn->sinks = {{"Sample", GrNode::Port::Type::SAMPLE}, {"Brightness", GrNode::Port::Type::VEC1}, {"Contrast", GrNode::Port::Type::VEC1}, {"Hue", GrNode::Port::Type::VEC1}};
+		gn->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CCns','tCol')) {
+		gn->name = "Constant";
+		gn->sinks = {{"Color", GrNode::Port::Type::COLOR}};
+		gn->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CEmb','ed  ')) {
+		gn->name = "Embed";
+		gn->sinks = {
+			{"Frame", GrNode::Port::Type::SAMPLE},
+			{"Sub 1", GrNode::Port::Type::SAMPLE}, {" Pos", GrNode::Port::Type::VEC2}, {" Size", GrNode::Port::Type::VEC1},
+			{"Sub 2", GrNode::Port::Type::SAMPLE}, {" Pos", GrNode::Port::Type::VEC2}, {" Size", GrNode::Port::Type::VEC1},
+			{"Sub 3", GrNode::Port::Type::SAMPLE}, {" Pos", GrNode::Port::Type::VEC2}, {" Size", GrNode::Port::Type::VEC1}
+		};
+		gn->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CIma','ge  ')) {
+		gn->name = "Image";
+		gn->sinks = {{"Filepath", GrNode::Port::Type::FILE_OPEN}};
+		gn->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CWin','dow ')) {
+		gn->name = "Window";
+		gn->sinks = {{"Name", GrNode::Port::Type::WINDOW_SOURCE}};
+		gn->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CInA','udio')) {
+		gn->name = "Microphone";
+		gn->sinks = {{"Source", GrNode::Port::Type::MIC_SOURCE}};
+		gn->sources = {{"Audio", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CExp','Wave')) {
+		gn->name = "Mux Wav";
+		gn->sinks = {{"Filename", GrNode::Port::Type::FILE_SAVE}, {"Audio", GrNode::Port::Type::SAMPLE}};
+		gn->sources = {};
+	} else if(gn->logical->type == CUTIHI_T('CMov','ie  ')) {
+		gn->name = "Movie";
+		gn->sinks = {{"Filepath", GrNode::Port::Type::FILE_OPEN}, {"Time", GrNode::Port::Type::VEC1}};
+		gn->sources = {{"Sample", GrNode::Port::Type::SAMPLE}, {"Audio", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CEnc','GVP8')) {
+		gn->name = "Encode VP8";
+		gn->sinks = {{"Sample", GrNode::Port::Type::SAMPLE}};
+		gn->sources = {{"Bitstream"}};
+	} else if(gn->logical->type == CUTIHI_T('CEnc','GVP9')) {
+		gn->name = "Encode VP9";
+		gn->sinks = {{"Sample", GrNode::Port::Type::SAMPLE}};
+		gn->sources = {{"Bitstream"}};
+	} else if(gn->logical->type == CUTIHI_T('CExp','Webm')) {
+		gn->name = "Mux WebM";
+		gn->sinks = {{"Video Bitstream"}, {"Audio Bitstream"}, {"Filename", GrNode::Port::Type::FILE_SAVE}};
+		gn->sources = {};
+	} else if(gn->logical->type == CUTIHI_T('CKey','hook')) {
+		gn->name = "Keyhook";
+		gn->sinks = {{"Key", GrNode::Port::Type::VEC1}, {"Smooth Time", GrNode::Port::Type::VEC1}};
+		gn->sources = {{"Bool", GrNode::Port::Type::VEC1}};
+	} else if(gn->logical->type == CUTIHI_T('CEnc','Opus')) {
+		gn->name = "Encode Opus";
+		gn->sinks = {{"Audio", GrNode::Port::Type::SAMPLE}};
+		gn->sources = {{"Bitstream"}};
+	} else if(gn->logical->type == CUTIHI_T('CWeb','Cam ')) {
+		gn->name = "Live Digital Camera";
+		gn->sinks = {};
+		gn->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
+	} else if(gn->logical->type == CUTIHI_T('CCmp','nScl')) {
+		gn->name = "Scale";
+		gn->sinks = {{"Vector", GrNode::Port::Type::VEC4}, {"Sample", GrNode::Port::Type::SAMPLE}};
+		gn->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
+	} else {
+		puts("Unknown node type.");
+	}
+}
+
 Frame::Frame() : wxFrame(NULL, wxID_ANY, "Cuticle", wxDefaultPosition, {wxSystemSettings::GetMetric(wxSYS_SCREEN_X) / 2, wxSystemSettings::GetMetric(wxSYS_SCREEN_Y) / 2}) {
 	aui.SetManagedWindow(this);
 	
 	viewer = new ImageViewer(this);
 	graph = new NodeGraph(this);
-	compsets = new CompositionSettings(this);
 	timeline = new Timeline(this);
 	
 	auto info = wxAuiPaneInfo().Center().Caption("Preview").BestSize(GetSize().x, GetSize().y * 3 / 4);
@@ -42,9 +127,6 @@ Frame::Frame() : wxFrame(NULL, wxID_ANY, "Cuticle", wxDefaultPosition, {wxSystem
 	info = wxAuiPaneInfo().Bottom().Caption("Node Graph").BestSize(GetSize().x, GetSize().y * 1 / 4);
 	aui.AddPane(graph, info);
 	
-	info = wxAuiPaneInfo().Right().Caption("Composition");
-	aui.AddPane(compsets, info);
-	
 	info = wxAuiPaneInfo().Bottom().Row(2).Caption("Timeline");
 	aui.AddPane(timeline, info);
 	
@@ -55,15 +137,165 @@ Frame::Frame() : wxFrame(NULL, wxID_ANY, "Cuticle", wxDefaultPosition, {wxSystem
 		[CUTIHI_MODE_LIVE] = wxBitmap{"tlml.bmp", wxBITMAP_TYPE_ANY},
 		[CUTIHI_MODE_OFFLINE] = wxBitmap{"tlmo.bmp", wxBITMAP_TYPE_ANY}
 	};
-	int modeTool = tlba->AddTool(wxID_ANY, "Mode", wxBitmap{"tlml.bmp", wxBITMAP_TYPE_ANY})->GetId();
+	auto modeTool = tlba->AddTool(wxID_ANY, "Mode", wxBitmap{"tlml.bmp", wxBITMAP_TYPE_ANY});
 	CHi_SetMode(CUTIHI_MODE_LIVE);
+	
+	tlba->AddTool(wxID_OPEN, "Load", wxBitmap{"btn_load.bmp", wxBITMAP_TYPE_ANY});
+	tlba->AddTool(wxID_SAVE, "Save", wxBitmap{"btn_save.bmp", wxBITMAP_TYPE_ANY});
+
 	tlba->Bind(wxEVT_COMMAND_TOOL_CLICKED, [=](wxCommandEvent &ev){
-		if(ev.GetId() == modeTool) {
+		if(ev.GetId() == modeTool->GetId()) {
 			CHi_SetMode((CHiMode) ((CHi_GetMode() + 1) % 2));
-			tlba->SetToolNormalBitmap(modeTool, modeImgs[CHi_GetMode()]);
+			tlba->SetToolNormalBitmap(modeTool->GetId(), modeImgs[CHi_GetMode()]);
+			
+			// wxToolBarToolBase::SetShortHelp doesn't work
+			if(CHi_GetMode() == CUTIHI_MODE_LIVE) {
+				tlba->SetToolShortHelp(modeTool->GetId(), "Set to live processing.");
+			} else {
+				tlba->SetToolShortHelp(modeTool->GetId(), "Set to offline processing.");
+			}
+		} else if(ev.GetId() == wxID_SAVE) {
+			wxFileDialog save{this, "Save", "", "", "Cuticle Project (*.ctc)|*.ctc", wxFD_SAVE | wxFD_OVERWRITE_PROMPT};
+			
+			if(save.ShowModal() == wxID_OK) {
+				FILE *f = fopen(save.GetPath().mb_str(), "wb");
+				
+				CHi_NodeGraphSave(graph->backendNG, +[](void *ud, const void *data, size_t len){
+					auto f = (FILE*) ud;
+					
+					return fwrite(data, 1, len, f);
+				}, f);
+				
+				for(size_t n = 0; n < graph->backendNG->count; n++) {
+					GrNode *gn = *std::find_if(graph->gnodes.begin(), graph->gnodes.end(), [=](GrNode *gn){
+						return gn->logical == graph->backendNG->nodes[n];
+					});
+					
+					int32_t pos[2] = {gn->GetPosition().x, gn->GetPosition().y};
+					fwrite(pos, sizeof(pos), 1, f);
+				}
+				
+				fclose(f);
+			}
+		} else if(ev.GetId() == wxID_OPEN) {
+			wxFileDialog load{this, "Load", "", "", "Cuticle Project (*.ctc)|*.ctc", wxFD_OPEN | wxFD_FILE_MUST_EXIST};
+			
+			if(load.ShowModal() == wxID_OK) {
+				FILE *f = fopen(load.GetPath().mb_str(), "rb");
+				
+				if(CHi_NodeGraphLoad(graph->backendNG, +[](void *ud, void *data, size_t len){
+					auto f = (FILE*) ud;
+					
+					return fread(data, 1, len, f);
+				}, f) == 0) {
+					
+					for(GrNode *gnode : graph->gnodes) {
+						gnode->Destroy();
+					}
+					
+					graph->gnodes.clear();
+					graph->links.clear();
+					
+					for(size_t n = 0; n < graph->backendNG->count; n++) {
+						GrNode *gnode = new GrNode(graph);
+						
+						int32_t pos[2];
+						fread(pos, sizeof(pos), 1, f);
+						
+						gnode->SetPosition({pos[0], pos[1]});
+						
+						gnode->logical = graph->backendNG->nodes[n];
+						
+						ShapeGrNode(gnode);
+						gnode->Fit();
+						
+						graph->gnodes.push_back(gnode);
+					}
+					
+					for(size_t n = 0; n < graph->backendNG->count; n++) {
+						CHiPubNode *node = graph->backendNG->nodes[n];
+						
+						for(size_t s = 0; s < node->sinkCount; s++) {
+							if(node->sinks[s].type == CUTIHI_VAL_LINKED) {
+								graph->links.push_back(NodeGraph::Link{graph->gnodes[n], s, *std::find_if(graph->gnodes.begin(), graph->gnodes.end(), [=](GrNode *gn){ return gn->logical == node->sinks[s].data.linked.to; }), node->sinks[s].data.linked.idx});
+							}
+						}
+					}
+					
+					toolbar.duration->SetSeconds(std::max(0.f, graph->backendNG->duration));
+					
+					if(graph->backendNG->duration <= 0) {
+						toolbar.durationEnable->SetValue(false);
+						toolbar.duration->Enable(false);
+					}
+				}
+				
+				fclose(f);
+			}
+		}
+	});	
+	tlba->AddSeparator();
+
+	toolbar.durationEnable = new wxCheckBox(tlba, wxID_ANY, "");
+	toolbar.duration = new ctTimeCtrl(tlba, 120);
+	
+	toolbar.duration->Bind(wxEVT_COMMAND_TEXT_UPDATED, [=](wxCommandEvent&){
+		CHi_SetDuration(graph->backendNG, toolbar.durationEnable->IsChecked() ? toolbar.duration->GetSeconds() : -1);
+	});
+	
+	toolbar.durationEnable->SetValue(true);
+	toolbar.durationEnable->Bind(wxEVT_CHECKBOX, [=](wxCommandEvent&){
+		toolbar.duration->Enable(toolbar.durationEnable->GetValue());
+		
+		if(!toolbar.durationEnable->GetValue()) {
+			CHi_SetDuration(graph->backendNG, -1);
 		}
 	});
 	
+	toolbar.btnPerform = new wxButton(tlba, wxID_ANY, "Compile");
+	toolbar.btnPerform->Bind(wxEVT_BUTTON, [=](wxCommandEvent &ev){
+		if(toolbar.btnPerform->GetLabel() == "Kill") {
+			CHi_StopCompilation(graph->backendNG);
+			toolbar.btnPerform->Disable();
+			tlba->EnableTool(wxID_SAVE, false);
+			tlba->EnableTool(wxID_OPEN, false);
+		} else {
+			CHi_BeginCompilation(graph->backendNG);
+			toolbar.btnPerform->SetLabel("Kill");
+			
+			std::thread{[=](){
+				while(graph->backendNG->compilationStatus == CUTIHI_COMP_RUNNING) {
+					CallAfter([=](){
+						float t = CHi_Time_Get(graph->backendNG);
+						stba->SetStatusText(wxString::Format("%02i:%02i:%06.03fs", (int) (t / 3600), (int) (t / 60), fmodf(t, 60)));
+					});
+					
+					std::this_thread::sleep_for(std::chrono::milliseconds(100));
+				}
+				
+				CallAfter([=](){
+					stba->SetStatusText("Compilation has ended.");
+				});
+			}}.detach();
+		}
+	});
+	
+	tlba->AddControl(toolbar.durationEnable);
+	tlba->AddControl(toolbar.duration);
+	tlba->AddControl(toolbar.btnPerform);
+	
+	graph->backendNG->eventOnStopComplete = +[](CHiNodeGraph *ng){
+		wxTheApp->CallAfter([ng](){
+			wxButton *btn = ((Frame*) ng->ud)->toolbar.btnPerform;
+			btn->Enable();
+			btn->SetLabel("Compile");
+			
+			auto tlba = ((Frame*) ng->ud)->tlba;
+			tlba->EnableTool(wxID_SAVE, true);
+			tlba->EnableTool(wxID_OPEN, true);
+		});
+	};
+	
 	tlba->Realize();
 	
 	aui.SetFlags(wxAUI_MGR_LIVE_RESIZE | wxAUI_MGR_DEFAULT);
@@ -320,8 +552,8 @@ GrNode::GrNode(NodeGraph *parent) : wxPanel(parent, wxID_ANY, {0, 0}, {175, 80})
 				wxSingleChoiceDialog dlg(this, "", "Choose Source", choices.size(), choices.data(), datae.data());
 				if(dlg.ShowModal() == wxID_OK) {
 					CHiValue newv;
-					newv.type = CUTIHI_VAL_VEC4;
-					newv.data.vec4[0] = (size_t) (uintptr_t) dlg.GetSelectionData();
+					newv.type = CUTIHI_VAL_TEXT;
+					newv.data.text = strdup(CHi_Microphone_GetSourceName((size_t) (uintptr_t) dlg.GetSelectionData()));
 					CHi_ConfigureSink(this->logical, p, newv);
 					parent->Dirtify(this);
 				}
@@ -500,8 +732,8 @@ NodeGraph::NodeGraph(Frame *f) : wxPanel(f, wxID_ANY) {
 	{
 		GrNode *v = new GrNode(this);
 		v->logical = CHi_Preview();
-		v->name = "Preview";
-		v->sinks = {{"Video", GrNode::Port::Type::SAMPLE}};
+		
+		ShapeGrNode(v);
 		
 		CHi_RegisterNode(backendNG, v->logical);
 		gnodes.push_back(v);
@@ -536,39 +768,18 @@ NodeGraph::NodeGraph(Frame *f) : wxPanel(f, wxID_ANY) {
 			if(ev.GetId() == idConstant) {
 				noed = new GrNode(this);
 				noed->logical = CHi_ConstantSample();
-				printf("%p\n", noed->logical->sinks[0].data.vec4);
-				noed->name = "Constant";
-				noed->sinks = {{"Color", GrNode::Port::Type::COLOR}};
-				noed->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
 			} else if(ev.GetId() == idImage) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Image();
-				noed->name = "Image";
-				noed->sinks = {{"Filepath", GrNode::Port::Type::FILE_OPEN}};
-				noed->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
 			} else if(ev.GetId() == idEmbed) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Embed();
-				noed->name = "Embed";
-				noed->sinks = {
-					{"Frame", GrNode::Port::Type::SAMPLE},
-					{"Sub 1", GrNode::Port::Type::SAMPLE}, {" Pos", GrNode::Port::Type::VEC2}, {" Size", GrNode::Port::Type::VEC1},
-					{"Sub 2", GrNode::Port::Type::SAMPLE}, {" Pos", GrNode::Port::Type::VEC2}, {" Size", GrNode::Port::Type::VEC1},
-					{"Sub 3", GrNode::Port::Type::SAMPLE}, {" Pos", GrNode::Port::Type::VEC2}, {" Size", GrNode::Port::Type::VEC1}
-				};
-				noed->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
 			} else if(ev.GetId() == idModulate) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Modulate();
-				noed->name = "Modulate";
-				noed->sinks = {{"Sample", GrNode::Port::Type::SAMPLE}, {"Brightness", GrNode::Port::Type::VEC1}, {"Contrast", GrNode::Port::Type::VEC1}, {"Hue", GrNode::Port::Type::VEC1}};
-				noed->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
 			} else if(ev.GetId() == idMovie) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Movie();
-				noed->name = "Movie";
-				noed->sinks = {{"Filepath", GrNode::Port::Type::FILE_OPEN}, {"Time", GrNode::Port::Type::VEC1}};
-				noed->sources = {{"Sample", GrNode::Port::Type::SAMPLE}, {"Audio", GrNode::Port::Type::SAMPLE}};
 				
 				after = [=](){
 					size_t portIdx = std::distance(noed->sinks.begin(), std::find_if(noed->sinks.begin(), noed->sinks.end(), [](GrNode::Port& p) -> bool {
@@ -583,84 +794,47 @@ NodeGraph::NodeGraph(Frame *f) : wxPanel(f, wxID_ANY) {
 			} else if(ev.GetId() == idEncodeVp9) {
 				noed = new GrNode(this);
 				noed->logical = CHi_EncodeVP9();
-				noed->name = "Encode VP9";
-				noed->sinks = {{"Sample", GrNode::Port::Type::SAMPLE}};
-				noed->sources = {{"Bitstream"}};
 			} else if(ev.GetId() == idEncodeVp8) {
 				noed = new GrNode(this);
 				noed->logical = CHi_EncodeVP8();
-				noed->name = "Encode VP8";
-				noed->sinks = {{"Sample", GrNode::Port::Type::SAMPLE}};
-				noed->sources = {{"Bitstream"}};
 			} else if(ev.GetId() == idMuxWebm) {
 				noed = new GrNode(this);
 				noed->logical = CHi_MuxWebm();
-				noed->name = "Mux WebM";
-				noed->sinks = {{"Video Bitstream"}, {"Audio Bitstream"}, {"Filename", GrNode::Port::Type::FILE_SAVE}};
-				noed->sources = {};
 			} else if(ev.GetId() == idWindow) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Window();
-				noed->name = "Window";
-				noed->sinks = {{"Name", GrNode::Port::Type::WINDOW_SOURCE}};
-				noed->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
 			} else if(ev.GetId() == idText) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Text();
-				noed->name = "Text";
-				noed->sinks = {{"Text", GrNode::Port::Type::TEXT}, {"Color", GrNode::Port::Type::COLOR}, {"DPI", GrNode::Port::Type::VEC1}};
-				noed->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
 			} else if(ev.GetId() == idTime) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Time();
-				noed->name = "Time";
-				noed->sinks = {};
-				noed->sources = {{"t", GrNode::Port::Type::VEC1}};
 			} else if(ev.GetId() == idMicrophone) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Microphone();
-				noed->name = "Microphone";
-				noed->sinks = {{"Source", GrNode::Port::Type::MIC_SOURCE}};
-				noed->sources = {{"Audio", GrNode::Port::Type::SAMPLE}};
 			} else if(ev.GetId() == idMixer) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Mixer();
-				noed->name = "Mixer";
-				noed->sinks = {{"Sink 1", GrNode::Port::Type::SAMPLE}, {"Sink 2", GrNode::Port::Type::SAMPLE}};
-				noed->sources = {{"Audio", GrNode::Port::Type::SAMPLE}};
 			} else if(ev.GetId() == idMuxWav) {
 				noed = new GrNode(this);
 				noed->logical = CHi_ExportWav();
-				noed->name = "Mux Wav";
-				noed->sinks = {{"Filename", GrNode::Port::Type::FILE_SAVE}, {"Audio", GrNode::Port::Type::SAMPLE}};
-				noed->sources = {};
 			} else if(ev.GetId() == idEncodeOpus) {
 				noed = new GrNode(this);
 				noed->logical = CHi_EncodeOpus();
-				noed->name = "Encode Opus";
-				noed->sinks = {{"Audio", GrNode::Port::Type::SAMPLE}};
-				noed->sources = {{"Bitstream"}};
 			} else if(ev.GetId() == idCamera) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Camera();
-				noed->name = "Live Digital Camera";
-				noed->sinks = {};
-				noed->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
 			} else if(ev.GetId() == idComponentScale) {
 				noed = new GrNode(this);
 				noed->logical = CHi_ComponentScale();
-				noed->name = "Scale";
-				noed->sinks = {{"Vector", GrNode::Port::Type::VEC4}, {"Sample", GrNode::Port::Type::SAMPLE}};
-				noed->sources = {{"Sample", GrNode::Port::Type::SAMPLE}};
 			} else if(ev.GetId() == idKeyhook) {
 				noed = new GrNode(this);
 				noed->logical = CHi_Keyhook();
-				noed->name = "Keyhook";
-				noed->sinks = {{"Key", GrNode::Port::Type::VEC1}, {"Smooth Time", GrNode::Port::Type::VEC1}};
-				noed->sources = {{"Bool", GrNode::Port::Type::VEC1}};
 			}
 			
 			if(noed) {
+				ShapeGrNode(noed);
+				
 				noed->Fit();
 				noed->SetPosition(position);
 				CHi_RegisterNode(backendNG, noed->logical);
@@ -754,7 +928,7 @@ void NodeGraph::Dirtify(GrNode *g) {
 		}
 	}
 	
-	if(g == gnodes[0]) {
+	if(g->logical->type == CUTIHI_T('CPre','view')) {
 		if(CHi_Hysteresis(g->logical)) {
 			CHiValue *val = CHi_Crawl(&g->logical->sinks[0]);
 			
@@ -787,52 +961,3 @@ bool NodeGraph::DetectCycles(GrNode *root) {
 	std::set<GrNode*> p{};
 	return dfs(this, p, root);
 }
-
-CompositionSettings::CompositionSettings(Frame *parent) : wxPanel(parent, wxID_ANY) {
-	auto sz = new wxBoxSizer(wxVERTICAL);
-	
-	sz->Add(this->durationEnable = new wxCheckBox(this, wxID_ANY, "Duration"), 0, wxALIGN_CENTER);
-	sz->Add(this->duration = new ctTimeCtrl(this, 120), 0, wxEXPAND);
-	
-	durationEnable->SetValue(true);
-	durationEnable->Bind(wxEVT_CHECKBOX, [=](wxCommandEvent&){
-		duration->Enable(durationEnable->GetValue());
-	});
-	
-	sz->Add(this->btnPerform = new wxButton(this, wxID_ANY, "Compile"), 0, wxEXPAND);
-	btnPerform->Bind(wxEVT_BUTTON, [=](wxCommandEvent &ev){
-		if(btnPerform->GetLabel() == "Kill") {
-			CHi_StopCompilation(parent->graph->backendNG);
-			btnPerform->Disable();
-		} else {
-			CHi_SetDuration(parent->graph->backendNG, durationEnable->IsChecked() ? duration->GetSeconds() : -1);
-			CHi_BeginCompilation(parent->graph->backendNG);
-			btnPerform->SetLabel("Kill");
-			
-			std::thread{[=](){
-				while(parent->graph->backendNG->compilationStatus == CUTIHI_COMP_RUNNING) {
-					parent->CallAfter([=](){
-						float t = CHi_Time_Get(parent->graph->backendNG);
-						parent->stba->SetStatusText(wxString::Format("%02i:%02i:%06.03fs", (int) (t / 3600), (int) (t / 60), fmodf(t, 60)));
-					});
-					
-					std::this_thread::sleep_for(std::chrono::milliseconds(100));
-				}
-				
-				parent->CallAfter([=](){
-					parent->stba->SetStatusText("Compilation has ended.");
-				});
-			}}.detach();
-		}
-	});
-	
-	parent->graph->backendNG->eventOnStopComplete = +[](CHiNodeGraph *ng){
-		wxTheApp->CallAfter([ng](){
-			wxButton *btn = ((Frame*) ng->ud)->compsets->btnPerform;
-			btn->Enable();
-			btn->SetLabel("Compile");
-		});
-	};
-	
-	SetSizerAndFit(sz);
-}
diff --git a/ui/frame.h b/ui/frame.h
index 9432b90..f18aca9 100644
--- a/ui/frame.h
+++ b/ui/frame.h
@@ -18,19 +18,26 @@
 
 struct NodeGraph;
 struct ImageViewer;
-struct CompositionSettings;
 struct Timeline;
+struct ctTimeCtrl;
+
 struct Frame : wxFrame {
 	wxAuiManager aui;
 	
 	ImageViewer *viewer;
 	NodeGraph *graph;
-	CompositionSettings *compsets;
 	Timeline *timeline;
 	
 	wxStatusBar *stba;
 	wxToolBar *tlba;
 	
+	struct {
+		ctTimeCtrl *duration;
+		wxCheckBox *durationEnable;
+		
+		wxButton *btnPerform;
+	} toolbar;
+	
 	Frame();
 	virtual ~Frame();
 };
@@ -59,17 +66,6 @@ struct GrNode : wxPanel {
 	virtual void Fit() override;
 };
 
-struct ctTimeCtrl;
-struct CompositionSettings : wxPanel {
-	ctTimeCtrl *duration;
-	wxCheckBox *durationEnable;
-	
-	wxButton *btnPerform;
-	
-	CompositionSettings(Frame*);
-	virtual ~CompositionSettings() = default;
-};
-
 struct ImageViewer : wxPanel {
 	wxPoint pos;
 	wxImage img;