Adds a sunxi-cedrus-drv-video libVA backend

This VA backend uses v4l2's Frame API proposal to interface with the "sunxi-cedrus" video driver on Allwinner SoC. Only a few parts of the code are really dependent on sunxi-cedrus and this VA backend could be reused for other v4l drivers using the Frame API.
2016-08-05 12:23:15 +02:00
commit e263c9542c
28 changed files with 2805 additions and 0 deletions
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+/*
+ * Copyright (c) 2016 Florent Revest, <florent.revest@free-electrons.com>
+ *               2007 Intel Corporation. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _BUFFER_H_
+#define _BUFFER_H_
+
+#include <va/va_backend.h>
+
+#include "object_heap.h"
+#include "sunxi_cedrus_drv_video.h"
+
+#define BUFFER(id)  ((object_buffer_p)  object_heap_lookup(&driver_data->buffer_heap,  id))
+#define BUFFER_ID_OFFSET		0x08000000
+
+struct object_buffer {
+	struct object_base base;
+	void *buffer_data;
+	int max_num_elements;
+	int num_elements;
+	VABufferType type;
+	unsigned int size;
+};
+
+typedef struct object_buffer *object_buffer_p;
+
+VAStatus sunxi_cedrus_CreateBuffer(VADriverContextP ctx, VAContextID context,
+		VABufferType type, unsigned int size, unsigned int num_elements,
+		void *data, VABufferID *buf_id);
+
+VAStatus sunxi_cedrus_BufferSetNumElements(VADriverContextP ctx,
+		VABufferID buf_id, unsigned int num_elements);
+
+VAStatus sunxi_cedrus_MapBuffer(VADriverContextP ctx, VABufferID buf_id,
+		void **pbuf);
+
+VAStatus sunxi_cedrus_UnmapBuffer(VADriverContextP ctx, VABufferID buf_id);
+
+void sunxi_cedrus_destroy_buffer(struct sunxi_cedrus_driver_data *driver_data,
+		object_buffer_p obj_buffer);
+
+VAStatus sunxi_cedrus_DestroyBuffer(VADriverContextP ctx, VABufferID buffer_id);
+
+VAStatus sunxi_cedrus_BufferInfo(VADriverContextP ctx, VABufferID buf_id,
+		VABufferType *type, unsigned int *size,
+		unsigned int *num_elements);
+
+#endif /* _BUFFER_H_ */