91 lines
3.6 KiB
C
91 lines
3.6 KiB
C
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/****************************************************************************
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* drivers/video/video_framebuff.h
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*
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* Copyright 2018 Sony Semiconductor Solutions Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of Sony Semiconductor Solutions Corporation nor
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* the names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __VIDEO_VIDEO_FRAMEBUFF_H__
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#define __VIDEO_VIDEO_FRAMEBUFF_H__
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#include <nuttx/video/video.h>
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#include <semaphore.h>
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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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sem_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_dma;
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vbuf_container_t *vbuf_next_dma;
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};
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typedef struct video_framebuff_s video_framebuff_t;
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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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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_dma_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_dma_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 // __VIDEO_VIDEO_FRAMEBUFF_H__
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