added ringbuffer and time utils

Signed-off-by: Thierry Bultel <thierry.bultel@iot.bzh>

1 files changed, 27 insertions, 0 deletions

diff --git a/plugins/alsa/alsa-ringbuf.h b/plugins/alsa/alsa-ringbuf.h
new file mode 100644
index 0000000..5ecc7fe
--- /dev/null
+++ b/plugins/alsa/alsa-ringbuf.h
@@ -0,0 +1,27 @@
+#ifndef __INC_ALSA_RINGBUF_H
+#define __INC_ALSA_RINGBUF_H
+
+#include "ringbuf.h"
+
+#include <alsa/asoundlib.h>
+#include <stdbool.h>
+
+typedef struct {
+	ringbuf_t rbuf;
+	size_t frameSize;
+} alsa_ringbuf_t ;
+
+extern alsa_ringbuf_t * alsa_ringbuf_new(snd_pcm_uframes_t capacity, size_t frameSize);
+extern snd_pcm_uframes_t alsa_ringbuf_buffer_size(const alsa_ringbuf_t *rb);
+extern void alsa_ringbuf_free(alsa_ringbuf_t *rb);
+extern void alsa_ringbuf_reset(alsa_ringbuf_t *rb);
+extern snd_pcm_uframes_t alsa_ringbuf_capacity(const alsa_ringbuf_t *rb);
+extern snd_pcm_uframes_t alsa_ringbuf_frames_free(const alsa_ringbuf_t *rb);
+extern snd_pcm_uframes_t alsa_ringbuf_frames_used(const alsa_ringbuf_t *rb);
+extern bool alsa_ringbuf_is_full(const alsa_ringbuf_t *rb);
+extern bool alsa_ringbuf_is_empty(const alsa_ringbuf_t *rb);
+
+extern void alsa_ringbuf_frames_push(alsa_ringbuf_t * rb, const void * buf, snd_pcm_uframes_t nb);
+extern void alsa_ringbuf_frames_pop(alsa_ringbuf_t * rb, void * buf, snd_pcm_uframes_t nb);
+
+#endif /* __INC_ALSA_RINGBUF_H */