*: split rototiller.[ch] into lib and main

This is a first approximation of separating the core modules and
threaded rendering from the cli-centric rototiller program and
its sdl+drm video backends.

Unfortunately this seemed to require switching over to libtool
archives (.la) to permit consolidating the per-lib and
per-module .a files into the librototiller.a and linking just
with librototiller.a to depend on the aggregate of
libs+modules+librototiller-glue in a simple fashion.

If an alternative to .la comes up I will switch over to it,
using libtool really slows down the build process.

Those are implementation/build system details though.  What's
important in these changes is establishing something resembling a
librototiller API boundary, enabling creating alternative
frontends which vendor this tree as a submodule and link just to
librototiller.{la,a} for all the modules+threaded rendering of
them, while providing their own fb_ops_t for outputting into, and
their own settings applicators for driving the modules setup.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/rototiller.h b/src/rototiller.h
index e185624..fde7d43 100644
--- a/src/rototiller.h
+++ b/src/rototiller.h
@@ -25,8 +25,12 @@ typedef struct rototiller_module_t {
 	char	*license;
 } rototiller_module_t;
 
+int rototiller_init(void);
+void rototiller_shutdown(void);
 const rototiller_module_t * rototiller_lookup_module(const char *name);
 void rototiller_get_modules(const rototiller_module_t ***res_modules, size_t *res_n_modules);
 void rototiller_module_render(const rototiller_module_t *module, void *context, unsigned ticks, fb_fragment_t *fragment);
+int rototiller_module_create_context(const rototiller_module_t *module, unsigned ticks, void **res_context);
+int rototiller_module_setup(settings_t *settings, setting_desc_t **next_setting);
 
 #endif