linux-4.4.1/v4l2_exportbuffer の履歴(No.1)

• 履歴一覧
• 差分 を表示
• 現在との差分 を表示
• ソース を表示
• linux-4.4.1/v4l2_exportbuffer へ行く。
  • 1 (2016-02-24 (水) 17:20:58)

参照元†

• linux-4.4.1/uvc_export_buffer()
• linux-4.4.1/uvc_ioctl_expbuf()
• linux-4.4.1/v4l2_ioctl_ops
• linux-4.4.1/v4l2_m2m_expbuf()
• linux-4.4.1/v4l2_m2m_ioctl_expbuf()
• linux-4.4.1/v4l_print_exportbuffer()
• linux-4.4.1/vb2_expbuf()
• linux-4.4.1/vb2_ioctl_expbuf()

説明†

• パス: linux-4.4.1/include/uapi/linux/videodev2.h

• FIXME: これは何？
  • 説明

参考†

実装†

/**
 * struct v4l2_exportbuffer - export of video buffer as DMABUF file descriptor
 *
 * @index:      id number of the buffer
 * @type:       enum v4l2_buf_type; buffer type (type == *_MPLANE for
 *              multiplanar buffers);
 * @plane:      index of the plane to be exported, 0 for single plane queues
 * @flags:      flags for newly created file, currently only O_CLOEXEC is
 *              supported, refer to manual of open syscall for more details
 * @fd:         file descriptor associated with DMABUF (set by driver)
 *
 * Contains data used for exporting a video buffer as DMABUF file descriptor.
 * The buffer is identified by a 'cookie' returned by VIDIOC_QUERYBUF
 * (identical to the cookie used to mmap() the buffer to userspace). All
 * reserved fields must be set to zero. The field reserved0 is expected to
 * become a structure 'type' allowing an alternative layout of the structure
 * content. Therefore this field should not be used for any other extensions.
 */
struct v4l2_exportbuffer {
        __u32           type; /* enum v4l2_buf_type */
        __u32           index;
        __u32           plane;
        __u32           flags;
        __s32           fd;
        __u32           reserved[11];
};

コメント†