90 lines
3.5 KiB
C
90 lines
3.5 KiB
C
/****************************************************************************
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* drivers/video/video_framebuff.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __DRIVERS_VIDEO_VIDEO_FRAMEBUFF_H
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#define __DRIVERS_VIDEO_VIDEO_FRAMEBUFF_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/video/video.h>
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#include <nuttx/mutex.h>
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/****************************************************************************
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* Public Types
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****************************************************************************/
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struct vbuf_container_s
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{
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struct v4l2_buffer buf; /* Buffer information */
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struct vbuf_container_s *next; /* Pointer to next buffer */
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};
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typedef struct vbuf_container_s vbuf_container_t;
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struct video_framebuff_s
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{
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enum v4l2_buf_mode mode;
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mutex_t lock_empty;
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int container_size;
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vbuf_container_t *vbuf_alloced;
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vbuf_container_t *vbuf_empty;
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vbuf_container_t *vbuf_top;
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vbuf_container_t *vbuf_tail;
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vbuf_container_t *vbuf_curr;
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vbuf_container_t *vbuf_next;
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};
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typedef struct video_framebuff_s video_framebuff_t;
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/* Buffer access interface. */
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void video_framebuff_init
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(video_framebuff_t *fbuf);
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void video_framebuff_uninit
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(video_framebuff_t *fbuf);
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int video_framebuff_realloc_container
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(video_framebuff_t *fbuf, int sz);
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vbuf_container_t *video_framebuff_get_container
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(video_framebuff_t *fbuf);
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void video_framebuff_free_container
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(video_framebuff_t *fbuf, vbuf_container_t *cnt);
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int video_framebuff_is_empty
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(video_framebuff_t *fbuf);
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void video_framebuff_queue_container
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(video_framebuff_t *fbuf, vbuf_container_t *tgt);
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vbuf_container_t *video_framebuff_dq_valid_container
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(video_framebuff_t *fbuf);
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vbuf_container_t *video_framebuff_get_vacant_container
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(video_framebuff_t *fbuf);
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vbuf_container_t *video_framebuff_pop_curr_container
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(video_framebuff_t *fbuf);
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void video_framebuff_capture_done
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(video_framebuff_t *fbuf);
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void video_framebuff_change_mode
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(video_framebuff_t *fbuf, enum v4l2_buf_mode mode);
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#endif /* __DRIVERS_VIDEO_VIDEO_FRAMEBUFF_H */
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