1 files changed, 138 insertions, 0 deletions
diff --git a/src/modules/rocket/rocket.c b/src/modules/rocket/rocket.c
new file mode 100644
index 0000000..1ad2c51
--- /dev/null
+++ b/src/modules/rocket/rocket.c
@@ -0,0 +1,138 @@
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "til.h"
+#include "til_fb.h"
+#include "til_module_context.h"
+#include "til_settings.h"
+#include "til_util.h"
+
+#include "txt/txt.h"
+
+/* Copyright (C) 2023 - Vito Caputo <vcaputo@pengaru.com> */
+
+/* This implements a rudimentary sequencing module varying
+ * "tapped" variables of other modules on a timeline via
+ * GNU Rocket.
+ */
+
+typedef struct rocket_context_t {
+	til_module_context_t	til_module_context;
+
+	const til_module_t	*module;
+	til_module_context_t	*module_ctxt;
+	char			*module_settings;
+} rocket_context_t;
+
+typedef struct rocket_setup_t {
+	til_setup_t		til_setup;
+	const char		*module;
+} rocket_setup_t;
+
+static rocket_setup_t rocket_default_setup = { .module = "rtv" };
+
+
+static til_module_context_t * rocket_create_context(til_stream_t *stream, unsigned seed, unsigned ticks, unsigned n_cpus, char *path, til_setup_t *setup)
+{
+	rocket_context_t	*ctxt;
+	const til_module_t	*module;
+
+	if (!setup)
+		setup = &rocket_default_setup.til_setup;
+
+	module = til_lookup_module(((rocket_setup_t *)setup)->module);
+	if (!module)
+		return NULL;
+
+	ctxt = til_module_context_new(stream, sizeof(rocket_context_t), seed, ticks, n_cpus, path);
+	if (!ctxt)
+		return NULL;
+
+	ctxt->module = module;
+
+	{
+		til_setup_t	*module_setup = NULL;
+
+		(void) til_module_randomize_setup(ctxt->module, rand_r(&seed), &module_setup, NULL);
+
+		(void) til_module_create_context(ctxt->module, stream, rand_r(&seed), ticks, 0, path, module_setup, &ctxt->module_ctxt);
+		til_setup_free(module_setup);
+	}
+
+	return &ctxt->til_module_context;
+}
+
+
+static void rocket_destroy_context(til_module_context_t *context)
+{
+	rocket_context_t	*ctxt = (rocket_context_t *)context;
+
+	til_module_context_free(ctxt->module_ctxt);
+	free(context);
+}
+
+
+static void rocket_render_fragment(til_module_context_t *context, til_stream_t *stream, unsigned ticks, unsigned cpu, til_fb_fragment_t **fragment_ptr)
+{
+	rocket_context_t	*ctxt = (rocket_context_t *)context;
+
+	til_module_render(ctxt->module_ctxt, stream, ticks, fragment_ptr);
+}
+
+
+static int rocket_setup(const til_settings_t *settings, til_setting_t **res_setting, const til_setting_desc_t **res_desc, til_setup_t **res_setup)
+{
+	const char	*module;
+	int		r;
+
+	r = til_settings_get_and_describe_value(settings,
+						&(til_setting_desc_t){
+							.name = "Module to sequence",
+							.key = "module",
+							.preferred = "rtv",
+							.annotations = NULL,
+						},
+						&module,
+						res_setting,
+						res_desc);
+	if (r)
+		return r;
+
+	/* turn layers colon-separated list into a null-terminated array of strings */
+	if (res_setup) {
+		const til_module_t	*til_module;
+		rocket_setup_t		*setup;
+
+		if (!strcmp(module, "rocket"))
+			return -EINVAL;
+
+		til_module = til_lookup_module(module);
+		if (!til_module)
+			return -ENOENT;
+
+		if (til_module->flags & (TIL_MODULE_HERMETIC | TIL_MODULE_EXPERIMENTAL))
+			return -EINVAL;
+
+		setup = til_setup_new(sizeof(*setup), (void(*)(til_setup_t *))free);
+		if (!setup)
+			return -ENOMEM;
+
+		setup->module = til_module->name;
+
+		*res_setup = &setup->til_setup;
+	}
+
+	return 0;
+}
+
+
+til_module_t	rocket_module = {
+	.create_context = rocket_create_context,
+	.destroy_context = rocket_destroy_context,
+	.render_fragment = rocket_render_fragment,
+	.name = "rocket",
+	.description = "GNU Rocket module sequencer",
+	.setup = rocket_setup,
+	.flags = TIL_MODULE_HERMETIC | TIL_MODULE_EXPERIMENTAL,
+};