linux-4.4.1/vb2_queue_init() の変更点

• 追加された行はこの色です。
• 削除された行はこの色です。
• linux-4.4.1/vb2_queue_init() へ行く。
• linux-4.4.1/vb2_queue_init() の差分を削除

*参照元 [#l6e6e36f]
#backlinks

*説明 [#d83e9ee4]
-パス: [[linux-4.4.1/drivers/media/v4l2-core/videobuf2-v4l2.c]]

-FIXME: これは何？
--説明


**引数 [#w07ed0a5]
-struct vb2_queue *q
--
--[[linux-4.4.1/vb2_queue]]


**返り値 [#ra313073]
-int
--


**参考 [#t905dff7]


*実装 [#h54985e8]
 /**
  * vb2_queue_init() - initialize a videobuf2 queue
  * @q:          videobuf2 queue; this structure should be allocated in driver
  *
  * The vb2_queue structure should be allocated by the driver. The driver is
  * responsible of clearing it's content and setting initial values for some
  * required entries before calling this function.
  * q->ops, q->mem_ops, q->type and q->io_modes are mandatory. Please refer
  * to the struct vb2_queue description in include/media/videobuf2-core.h
  * for more information.
  */
 int vb2_queue_init(struct vb2_queue *q)
 {
         /*
          * Sanity check
          */
         if (WARN_ON(!q)                   ||
             WARN_ON(q->timestamp_flags &
                     ~(V4L2_BUF_FLAG_TIMESTAMP_MASK |
                       V4L2_BUF_FLAG_TSTAMP_SRC_MASK)))
                 return -EINVAL;
 
-
--[[linux-4.4.1/WARN_ON()]]

         /* Warn that the driver should choose an appropriate timestamp type */
         WARN_ON((q->timestamp_flags & V4L2_BUF_FLAG_TIMESTAMP_MASK) ==
                 V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN);
 
         /* Warn that vb2_memory should match with v4l2_memory */
         if (WARN_ON(VB2_MEMORY_MMAP != (int)V4L2_MEMORY_MMAP)
                 || WARN_ON(VB2_MEMORY_USERPTR != (int)V4L2_MEMORY_USERPTR)
                 || WARN_ON(VB2_MEMORY_DMABUF != (int)V4L2_MEMORY_DMABUF))
                 return -EINVAL;
 
         if (q->buf_struct_size == 0)
                 q->buf_struct_size = sizeof(struct vb2_v4l2_buffer);
 
         q->buf_ops = &v4l2_buf_ops;
         q->is_multiplanar = V4L2_TYPE_IS_MULTIPLANAR(q->type);
         q->is_output = V4L2_TYPE_IS_OUTPUT(q->type);
 
-
--[[linux-4.4.1/v4l2_buf_ops(global)]]
--[[linux-4.4.1/V4L2_TYPE_IS_MULTIPLANAR()]]
--[[linux-4.4.1/V4L2_TYPE_IS_OUTPUT()]]

         return vb2_core_queue_init(q);
-
--[[linux-4.4.1/vb2_core_queue_init()]]

 }
 EXPORT_SYMBOL_GPL(vb2_queue_init);
-
--[[linux-4.4.1/EXPORT_SYMBOL_GPL()]]


*コメント [#hfef4c7e]