From bde275408c7f614ccf6e440bdd747f7b663fafe6 Mon Sep 17 00:00:00 2001
From: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Date: Sat, 25 Jan 2020 17:47:17 -0500
Subject: gst: Add a pool and an allocator implementation

This is needed to track the lifetime of the FrameBufferAllocator in relation to
the GstBuffer/GstMemory objects travelling inside GStreamer.

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 src/gstreamer/gstlibcameraallocator.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 src/gstreamer/gstlibcameraallocator.h

(limited to 'src/gstreamer/gstlibcameraallocator.h')

diff --git a/src/gstreamer/gstlibcameraallocator.h b/src/gstreamer/gstlibcameraallocator.h
new file mode 100644
index 00000000..b3f7f367
--- /dev/null
+++ b/src/gstreamer/gstlibcameraallocator.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2020, Collabora Ltd.
+ *     Author: Nicolas Dufresne <nicolas.dufresne@collabora.com>
+ *
+ * gstlibcameraallocator.h - GStreamer Custom Allocator
+ */
+
+#ifndef __GST_LIBCAMERA_ALLOCATOR_H__
+#define __GST_LIBCAMERA_ALLOCATOR_H__
+
+#include <gst/gst.h>
+#include <gst/allocators/allocators.h>
+
+#include <libcamera/stream.h>
+
+#define GST_TYPE_LIBCAMERA_ALLOCATOR gst_libcamera_allocator_get_type()
+G_DECLARE_FINAL_TYPE(GstLibcameraAllocator, gst_libcamera_allocator,
+		     GST_LIBCAMERA, ALLOCATOR, GstDmaBufAllocator)
+
+GstLibcameraAllocator *gst_libcamera_allocator_new(std::shared_ptr<libcamera::Camera> camera);
+
+bool gst_libcamera_allocator_prepare_buffer(GstLibcameraAllocator *self,
+					    libcamera::Stream *stream,
+					    GstBuffer *buffer);
+
+gsize gst_libcamera_allocator_get_pool_size(GstLibcameraAllocator *allocator,
+					    libcamera::Stream *stream);
+
+#endif /* __GST_LIBCAMERA_ALLOCATOR_H__ */
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