1 files changed, 91 insertions, 0 deletions
diff --git a/v4l2-mfc-encoder/io_dev.h b/v4l2-mfc-encoder/io_dev.h
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+++ b/v4l2-mfc-encoder/io_dev.h
@@ -0,0 +1,91 @@
+/*
+ * mfc codec encoding example application
+ * Andrzej Hajda <a.hajda@samsung.com>
+ *
+ * I/O device header file.
+ *
+ * Copyright 2012 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef IO_DEV_H
+#define IO_DEV_H
+
+#include <linux/videodev2.h>
+
+#include "common.h"
+
+struct dev_buffers {
+	int count; /* number of buffers */
+	int nplanes; /* number of planes per buffer */
+	int *lengths; /* array of plane lengths */
+	 /* array of plane addresses, address of plane p in buffer b
+	    is at addr[nplanes * b + p] */
+	char **addr;
+	 /* array of bytes used by plane, bytesused of plane p in buffer b
+	    is at bytesused[nplanes * b + p] */
+	int *bytesused;
+};
+
+struct ring_buffer {
+	int begin;
+	int end;
+	int size;
+	int data[0];
+};
+
+enum io_type { IO_NONE, IO_FUNC, IO_MMAP, IO_USERPTR };
+enum io_dir { DIR_IN = 0, DIR_OUT = 1};
+enum func_state { FS_OFF, FS_BUSY, FS_READY, FS_EVENT, FS_END };
+
+struct io_dev_ops;
+struct io_dev;
+
+struct io_port {
+	enum io_type type;
+	enum func_state state;
+	int counter; /* total number of dequeued buffers */
+	int nbufs; /* number of buffers in queue */
+	int limit; /* after dequeuing limit buffers state is changed to END */
+	struct dev_buffers *bufs;
+	struct ring_buffer *queue; /* used by non V4L devices */
+};
+
+struct io_dev {
+	int fd;
+	int event;
+	/* in and out parts of device */
+	struct io_port io[2];
+	struct io_dev_ops *ops;
+	void *priv;
+};
+
+struct io_dev_ops {
+	int (*read)(struct io_dev *dev, int nbufs, char **bufs, int *lens);
+	int (*write)(struct io_dev *dev, int nbufs, char **bufs, int *lens);
+	int (*req_bufs)(struct io_dev *dev, enum io_dir dir, int nelem);
+	int (*deq_buf)(struct io_dev *dev, enum io_dir dir);
+	int (*enq_buf)(struct io_dev *dev, enum io_dir dir, int idx);
+	int (*deq_event)(struct io_dev *dev);
+	int (*destroy)(struct io_dev *dev);
+};
+
+enum v4l2_buf_type io_dir_to_type(enum io_dir dir);
+int dev_copy_fmt(int src_fd, enum io_dir src_dir, int dst_fd,
+							enum io_dir dst_dir);
+
+int process_chain(struct io_dev *chain[], int nelem);
+
+#endif