til: add preliminary audio backend

This is an early implementation of something resembling an audio
backend for rototiller/libtil.

The assumption for now is that everything will use signed 16-bit
native-endian stereo output @ 44.1khz.

1 files changed, 35 insertions, 0 deletions

diff --git a/src/til_audio_context.c b/src/til_audio_context.c
new file mode 100644
index 0000000..63cc6f5
--- /dev/null
+++ b/src/til_audio_context.c
@@ -0,0 +1,35 @@
+#include <stdlib.h>
+
+#include "til_audio.h"
+#include "til_audio_context.h"
+#include "til_setup.h"
+
+/* XXX: this isn't intended to be used by anything other than til_audio.[ch],
+ * use til_audio_{init,shutdown}().  This is purely in service of that.
+ */
+
+void * til_audio_context_new(const til_audio_ops_t *ops, size_t size, til_setup_t *setup)
+{
+	til_audio_context_t	*c;
+
+	c = calloc(1, size);
+	if (!c)
+		return NULL;
+
+	c->setup = til_setup_ref(setup);
+	c->ops = ops;
+
+	return c;
+}
+
+
+til_audio_context_t * til_audio_context_free(til_audio_context_t *audio_context)
+{
+	if (!audio_context)
+		return NULL;
+
+	til_setup_free(audio_context->setup);
+	free(audio_context);
+
+	return NULL;
+}