1 files changed, 74 insertions, 0 deletions
diff --git a/include/libcamera/buffer.h b/include/libcamera/buffer.h
new file mode 100644
index 00000000..21a1ec4c
--- /dev/null
+++ b/include/libcamera/buffer.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * buffer.h - Buffer handling
+ */
+#ifndef __LIBCAMERA_BUFFER_H__
+#define __LIBCAMERA_BUFFER_H__
+
+#include <vector>
+
+#include <libcamera/signal.h>
+
+namespace libcamera {
+
+class BufferPool;
+
+class Plane final
+{
+public:
+	Plane();
+	~Plane();
+
+	int dmabuf() const { return fd_; }
+	int setDmabuf(int fd, unsigned int length);
+
+	void *mem();
+	unsigned int length() const { return length_; }
+
+private:
+	int mmap();
+	int munmap();
+
+	int fd_;
+	unsigned int length_;
+	void *mem_;
+};
+
+class Buffer final
+{
+public:
+	Buffer();
+
+	unsigned int index() const { return index_; }
+	std::vector<Plane> &planes() { return planes_; }
+
+	Signal<Buffer *> completed;
+
+private:
+	friend class BufferPool;
+
+	unsigned int index_;
+
+	std::vector<Plane> planes_;
+};
+
+class BufferPool final
+{
+public:
+	~BufferPool();
+
+	void createBuffers(unsigned int count);
+	void destroyBuffers();
+
+	unsigned int count() const { return buffers_.size(); }
+	std::vector<Buffer> &buffers() { return buffers_; }
+
+private:
+	std::vector<Buffer> buffers_;
+};
+
+} /* namespace libcamera */
+
+#endif /* __LIBCAMERA_BUFFER_H__ */