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@@ -0,0 +1,265 @@
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+#include <stdio.h>
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+#include <stdlib.h>
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+#include <string.h>
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+#include <errno.h>
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+#include <fcntl.h>
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+#include <glib.h>
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+#include <math.h>
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+#include <unistd.h>
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+#include <sys/stat.h>
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+#include <sys/time.h>
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+
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+#include <fastwriter.h>
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+#include <ufo/ufo-graph.h>
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+
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+#include "config.h"
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+
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+#define FW_BUFFER 4096l
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+#define WRITE_INTERVAL 1
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+#define WRITE_SUMMARY 5
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+#define NEWFILE 10
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+
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+
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+#define run_time 3600
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+const char *fifo_name = ".fifo";
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+
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+struct setup_s {
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+ size_t width;
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+ size_t height;
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+ size_t bpp;
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+ size_t fps;
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+
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+ size_t iters;
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+
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+ volatile int run_started;
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+};
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+
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+typedef struct setup_s setup_t;
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+
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+void handle_error(GError *error) {
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+ if (error != NULL) {
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+ g_print("%s\n", error->message);
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+ g_error_free(error);
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+ exit(EXIT_FAILURE);
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+ }
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+}
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+
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+void set_speed(setup_t *setup, size_t speed) {
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+ setup->bpp = sizeof(float);
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+ setup->width = 1024;
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+ setup->height = 768;
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+ setup->fps = 1 + speed / setup->width / setup->height / setup->bpp;
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+}
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+
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+void set_size(setup_t *setup, size_t size) {
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+ setup->iters = size / setup->width / setup->height / setup->bpp;
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+}
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+
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+void set_time(setup_t *setup, size_t time) {
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+ setup->iters = time * setup->fps;
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+}
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+
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+static void *run(setup_t *setup) {
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+ GError *error = NULL;
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+ UfoGraph *graph = NULL;
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+ /* If you want to use system-wide installed filters:
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+ * graph = ufo_graph_new(); */
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+
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+ graph = g_object_new(UFO_TYPE_GRAPH,
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+#ifdef METABALLS_PATH
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+ "paths", METABALLS_PATH,
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+#endif /* METABALLS_PATH */
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+ NULL);
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+
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+// printf("%lu %lu %lu %lu\n", setup->width, setup->height, setup->iters, setup->width * setup->height * setup->iters * sizeof(float));
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+ UfoFilter *metaballs = ufo_graph_get_filter(graph, "metaballs", &error);
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+ handle_error(error);
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+ g_object_set(G_OBJECT(metaballs),
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+ "width", setup->width,
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+ "height", setup->height,
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+ "num-balls", 1,
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+ "num-iterations", setup->iters,
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+ "frames-per-second", setup->fps,
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+ NULL);
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+
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+ UfoFilter *writer = ufo_graph_get_filter(graph, "pipeoutput", &error);
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+ handle_error(error);
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+ g_object_set(G_OBJECT(writer),
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+ "pipe-name", fifo_name,
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+ NULL);
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+
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+ ufo_filter_connect_to(metaballs, writer, &error);
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+ handle_error(error);
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+
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+ setup->run_started = 1;
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+ ufo_graph_run(graph, &error);
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+ handle_error(error);
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+
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+
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+// g_print("Wrote %lu bytes\n", width * height * num_iterations * sizeof(float));
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+
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+ g_thread_exit(NULL);
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+ return NULL;
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+}
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+
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+
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+
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+
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+int main(int argc, char const* argv[])
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+{
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+ int err;
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+ GError *gerr;
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+ GThread *thr;
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+ setup_t setup;
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+ fastwriter_t *fw;
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+ fastwriter_stats_t stats;
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+ const char *out = "/dev/null";
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+ size_t speed = 850;
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+
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+ size_t num_read = 0;
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+ size_t buf_max = 0;
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+
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+ int broken_frame = 0;
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+ size_t writeouts = 0;
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+ size_t duration, last_duration;
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+ struct timeval tv;
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+ struct timeval tv_started = {0};
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+ struct timeval tv_last_written = {0};
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+ unsigned long frames = 0, lost = 0;
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+ unsigned long delta, expected;
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+ unsigned long last_frames = 0, last_lost = 0;
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+
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+
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+ g_thread_init(NULL);
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+ g_type_init();
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+
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+ if (argc > 1) {
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+ out = argv[1];
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+ }
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+
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+ if (argc > 2) {
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+ speed = atoi(argv[2]);
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+ }
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+
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+ unlink(fifo_name);
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+ g_assert(!mkfifo(fifo_name, S_IWUSR | S_IRUSR));
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+
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+ fw = fastwriter_init(out, FASTWRITER_FLAGS_OVERWRITE);
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+ g_assert(fw);
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+
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+ err = fastwriter_open(fw, out, FASTWRITER_FLAGS_OVERWRITE);
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+ if (err) printf("FastWriter returned error %i\n", err);
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+
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+ g_assert(!err);
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+
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+ fastwriter_set_buffer_size(fw, FW_BUFFER * 1024 * 1024);
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+
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+ fastwriter_get_stats(fw, &stats);
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+ printf("*** Writing to %s, speed: %lu MB/s, buffer: %lu MB\n", out, speed, stats.buffer_size);
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+
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+ memset(&setup, 0, sizeof(setup_t));
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+ set_speed(&setup, speed * 1024 * 1024);
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+ set_size(&setup, run_time * speed * 1024 * 1024);
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+
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+ size_t frame_size = setup.width * setup.height * setup.bpp;
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+ void *buffer = malloc(frame_size);
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+ g_assert(buffer);
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+
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+ thr = g_thread_create((GThreadFunc)run, &setup, 1, &gerr);
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+ g_assert(thr);
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+
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+ while (!setup.run_started);
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+
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+ int fd = open(fifo_name, O_RDONLY);
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+ g_assert(fd);
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+
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+ ssize_t result = read(fd, buffer, frame_size);
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+
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+ while (result > 0) {
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+ if (!broken_frame) {
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+ err = fastwriter_push(fw, result, buffer);
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+ if (err) {
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+ if (err == EWOULDBLOCK) {
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+ if (num_read) fastwriter_cancel(fw);
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+ broken_frame = 1;
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+ } else {
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+ if (err) printf("FastWriter returned error %i\n", err);
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+ g_assert(!err);
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+ }
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+ }
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+ }
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+
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+ num_read += result;
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+
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+ if (num_read < frame_size) {
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+ result = read(fd, buffer, frame_size - num_read);
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+ continue;
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+ }
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+
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+ gettimeofday(&tv, NULL);
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+ if (!tv_started.tv_sec) {
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+ memcpy(&tv_started, &tv, sizeof(struct timeval));
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+ if (tv_started.tv_usec >= (1000000 / setup.fps))
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+ tv_started.tv_usec -= (1000000 / setup.fps);
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+ else {
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+ tv_started.tv_sec--;
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+ tv_started.tv_usec += 1000000 - (1000000 / setup.fps);
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+ }
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+ memcpy(&tv_last_written, &tv_started, sizeof(struct timeval));
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+ }
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+
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+ num_read = 0;
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+
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+ if (broken_frame) {
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+ lost++;
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+ } else {
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+ err = fastwriter_commit(fw);
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+ frames++;
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+ }
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+
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+ fastwriter_get_stats(fw, &stats);
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+ if (stats.buffer_used > buf_max) buf_max = stats.buffer_used;
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+
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+ if ((tv.tv_sec - tv_last_written.tv_sec) >= WRITE_INTERVAL) {
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+ last_duration = (tv.tv_sec - tv_last_written.tv_sec) * 1000000 + (tv.tv_usec - tv_last_written.tv_usec);
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+
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+/* expected = (tv.tv_sec - tv_last_summary.tv_sec) * setup.fps + (tv.tv_usec - tv_last_summary.tv_usec) * setup.fps / 1000000;
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+ delta = expected - lost - frames;
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+ if (delta > 0) delta--;*/
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+
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+ printf("Lost %6.2lf%% (% 8lu of % 8lu), %9.3lf GB at %8.3lf MB/s, buf:%6.2lf%%\n", 100.*(lost - last_lost) / (lost + frames - last_lost - last_frames), lost - last_lost, lost + frames - (last_lost + last_frames), 1. * frame_size * (frames - last_frames) / 1024 / 1024 / 1024, 1000000. * frame_size * (frames - last_frames) / last_duration / 1024 / 1024, 100.*buf_max/stats.buffer_size);
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+
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+ if (((++writeouts)%WRITE_SUMMARY)==0) {
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+ duration = (tv.tv_sec - tv_started.tv_sec) * 1000000 + (tv.tv_usec - tv_started.tv_usec);
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+
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+ expected = (tv.tv_sec - tv_started.tv_sec) * setup.fps + round(1.*(tv.tv_usec - tv_started.tv_usec)*setup.fps/1000000);
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+
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+ delta = expected - lost - frames;
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+ if ((delta > 1)||(delta < 1))
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+ printf(" *** Unexpected frame rate: %.2lf (%lu), delta: %li (%lu, %lu)\n", 1000000. * (frames + lost) / duration, setup.fps, delta, lost + frames, expected);
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+
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+ printf("Total %6.2lf%% (% 8lu of % 8lu), %9.3lf GB at %8.3lf MB/s, buf:%6.2lf%%\n", 100.*lost / (lost + frames), lost, lost + frames, 1. * frames * frame_size / 1024 / 1024 / 1024, 1000000. * frames * frame_size / duration / 1024 / 1024, 100.*stats.buffer_max / stats.buffer_size);
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+ }
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+
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+ buf_max = 0;
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+ memcpy(&tv_last_written, &tv, sizeof(struct timeval));
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+ last_frames = frames;
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+ last_lost = lost;
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+ }
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+
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+ result = read(fd, buffer, frame_size);
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+ }
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+
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+ printf("Wrote %lu GB\n", frame_size * frames / 1024 / 1024 / 1024);
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+
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+ g_thread_join(thr);
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+
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+ close(fd);
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+
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+ free(buffer);
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+ fastwriter_close(fw);
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+ fastwriter_destroy(fw);
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+ unlink(fifo_name);
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+
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+ return 0;
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+}
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