From 1b072a24c4e58361d353a0bfb5b5d63174e47524 Mon Sep 17 00:00:00 2001
From: Romain Vimont <rom@rom1v.com>
Date: Sun, 11 Apr 2021 15:01:05 +0200
Subject: [PATCH] Add packet sink trait

This trait will allow to abstract the concrete sink types from the
packet producer (stream.c).
---
 app/src/trait/packet_sink.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 app/src/trait/packet_sink.h

diff --git a/app/src/trait/packet_sink.h b/app/src/trait/packet_sink.h
new file mode 100644
index 00000000..fe9c137d
--- /dev/null
+++ b/app/src/trait/packet_sink.h
@@ -0,0 +1,27 @@
+#ifndef SC_PACKET_SINK
+#define SC_PACKET_SINK
+
+#include "common.h"
+
+#include <assert.h>
+#include <stdbool.h>
+
+typedef struct AVCodec AVCodec;
+typedef struct AVPacket AVPacket;
+
+/**
+ * Packet sink trait.
+ *
+ * Component able to receive AVPackets should implement this trait.
+ */
+struct sc_packet_sink {
+    const struct sc_packet_sink_ops *ops;
+};
+
+struct sc_packet_sink_ops {
+    bool (*open)(struct sc_packet_sink *sink, const AVCodec *codec);
+    void (*close)(struct sc_packet_sink *sink);
+    bool (*push)(struct sc_packet_sink *sink, const AVPacket *packet);
+};
+
+#endif