1 files changed, 38 insertions, 0 deletions
diff --git a/include/libcamera/internal/dma_heaps.h b/include/libcamera/internal/dma_heaps.h
new file mode 100644
index 00000000..80bf29e7
--- /dev/null
+++ b/include/libcamera/internal/dma_heaps.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2020, Raspberry Pi Ltd
+ *
+ * dma_heaps.h - Helper class for dma-heap allocations.
+ */
+
+#pragma once
+
+#include <stddef.h>
+
+#include <libcamera/base/flags.h>
+#include <libcamera/base/unique_fd.h>
+
+namespace libcamera {
+
+class DmaHeap
+{
+public:
+	enum class DmaHeapFlag {
+		Cma = 1 << 0,
+		System = 1 << 1,
+	};
+
+	using DmaHeapFlags = Flags<DmaHeapFlag>;
+
+	DmaHeap(DmaHeapFlags flags = DmaHeapFlag::Cma);
+	~DmaHeap();
+	bool isValid() const { return dmaHeapHandle_.isValid(); }
+	UniqueFD alloc(const char *name, std::size_t size);
+
+private:
+	UniqueFD dmaHeapHandle_;
+};
+
+LIBCAMERA_FLAGS_ENABLE_OPERATORS(DmaHeap::DmaHeapFlag)
+
+} /* namespace libcamera */