1 files changed, 49 insertions, 0 deletions
diff --git a/galsa.h b/galsa.h
new file mode 100644
index 0000000..5f5da40
--- /dev/null
+++ b/galsa.h
@@ -0,0 +1,49 @@
+#ifndef _GALSA_H
+#define _GALSA_H
+
+#include <alsa/asoundlib.h>
+#include <glib.h>
+
+typedef short sample;
+
+enum dev_runstate {
+	DEV_OPEN,
+	DEV_RUNNING,
+	DEV_STOPREQ,
+};
+enum qe_message {
+	QE_DATA,
+	QE_ERROR,
+	QE_STOPPED,
+};
+
+struct device {
+	char *path;
+	unsigned rate;
+	int chan;
+	snd_pcm_t *handle;
+	GAsyncQueue *queue;
+	size_t pktsize;
+
+	GThread *thread;
+	enum dev_runstate state;
+};
+
+struct qe {
+	enum qe_message message;
+	int errcode;
+	char *errp;
+
+	ssize_t size;
+	sample samples[];
+};
+
+extern struct device *device_open(const char *path,
+		unsigned rate, int chan, size_t pktsize);
+extern void device_start(struct device *dev);
+extern void device_stop(struct device *dev);
+extern void device_stop_wait(struct device *dev);
+extern void device_stop_done(struct device *dev);
+extern void device_close(struct device *dev);
+
+#endif