* turn til_fb_fragment_t.stream into a discrete parameter

This was mostly done out of convenience at the expense of turning
the fragment struct into more of a junk drawer.

But properly cleaning up owned stream pipes on context destroy
makes the inappropriateness of being part of til_fb_fragment_t
glaringly apparent.

Now the stream is just a separate thing passed to context create,
with a reference kept in the context for use throughout.  Cleanup
of the owned pipes on the stream supplied to context create is
automagic when the context gets destroyed.

Note that despite there being a stream in the module context, the
stream to use is still supplied to all the rendering family
functions (prepare/render/finish) and it's the passed-in stream
which should be used by these functions.  This is done to support
the possibility of switching out the stream frame-to-frame, which
may be interesting.  Imagine doing things like a latent stream
and a future stream and switching between them on the fly for
instance.  If there's a sequencing composite module, it could
flip between multiple sets of tracks or jump around multiple
streams with the visuals immediately flipping accordingly.

This should fix the --print-pipes crashing issues caused by lack
of cleanup when contexts were removed (like rtv does so often).

1 files changed, 6 insertions, 6 deletions

diff --git a/src/modules/checkers/checkers.c b/src/modules/checkers/checkers.c
index b7a4f11..c4a419f 100644
--- a/src/modules/checkers/checkers.c
+++ b/src/modules/checkers/checkers.c
@@ -79,7 +79,7 @@ static checkers_setup_t checkers_default_setup = {
 };
 
 
-static til_module_context_t * checkers_create_context(unsigned seed, unsigned ticks, unsigned n_cpus, char *path, til_setup_t *setup)
+static til_module_context_t * checkers_create_context(til_stream_t *stream, unsigned seed, unsigned ticks, unsigned n_cpus, char *path, til_setup_t *setup)
 {
 	size_t			size = sizeof(checkers_context_t);
 	checkers_context_t	*ctxt;
@@ -90,7 +90,7 @@ static til_module_context_t * checkers_create_context(unsigned seed, unsigned ti
 	if (((checkers_setup_t *)setup)->fill_module)
 		size += sizeof(til_module_context_t *) * n_cpus;
 
-	ctxt = til_module_context_new(size, ticks, seed, n_cpus, path);
+	ctxt = til_module_context_new(stream, size, ticks, seed, n_cpus, path);
 	if (!ctxt)
 		return NULL;
 
@@ -104,7 +104,7 @@ static til_module_context_t * checkers_create_context(unsigned seed, unsigned ti
 
 		/* since checkers is already threaded, create an n_cpus=1 context per-cpu */
 		for (unsigned i = 0; i < n_cpus; i++) /* TODO: errors */
-			(void) til_module_create_context(module, seed, ticks, 1, path /* FIXME TODO path-per-context breaks down on these per-cpu-context abuses */, module_setup, &ctxt->fill_module_contexts[i]);
+			(void) til_module_create_context(module, stream, seed, ticks, 1, path /* FIXME TODO path-per-context breaks down on these per-cpu-context abuses */, module_setup, &ctxt->fill_module_contexts[i]);
 
 		/* XXX: it would be interesting to support various patterns/layouts by varying the seed, but this will require
 		 * more complex context allocation strategies while also maintaining the per-cpu allocation.
@@ -227,7 +227,7 @@ static int checkers_fragmenter(til_module_context_t *context, const til_fb_fragm
 }
 
 
-static void checkers_prepare_frame(til_module_context_t *context, unsigned ticks, til_fb_fragment_t **fragment_ptr, til_frame_plan_t *res_frame_plan)
+static void checkers_prepare_frame(til_module_context_t *context, til_stream_t *stream, unsigned ticks, til_fb_fragment_t **fragment_ptr, til_frame_plan_t *res_frame_plan)
 {
 	checkers_context_t	*ctxt = (checkers_context_t *)context;
 	til_fb_fragment_t	*fragment = *fragment_ptr;
@@ -255,7 +255,7 @@ static inline unsigned hash(unsigned x)
 }
 
 
-static void checkers_render_fragment(til_module_context_t *context, unsigned ticks, unsigned cpu, til_fb_fragment_t **fragment_ptr)
+static void checkers_render_fragment(til_module_context_t *context, til_stream_t *stream, unsigned ticks, unsigned cpu, til_fb_fragment_t **fragment_ptr)
 {
 	checkers_context_t	*ctxt = (checkers_context_t *)context;
 	til_fb_fragment_t	*fragment = *fragment_ptr;
@@ -323,7 +323,7 @@ static void checkers_render_fragment(til_module_context_t *context, unsigned tic
 			til_fb_fragment_fill(fragment, flags, color);
 		else {
 			/* TODO: we need a way to send down color and flags, and use the module render as a brush of sorts */
-			til_module_render(ctxt->fill_module_contexts[cpu], ticks, fragment_ptr);
+			til_module_render(ctxt->fill_module_contexts[cpu], stream, ticks, fragment_ptr);
 		}
 	}
 }