Function rt_audio_pipe_init

components/drivers/audio/dev_audio_pipe.c:266–298

* @brief Init audio pipe * * This function will initialize a pipe device and put it under control of * resource management. * * @param pipe the pipe device * * @param name the name of pipe device * * @param flag the attribute of the pipe device * * @param buf the buffer of pipe device * * @param size the size of pipe device buffer * * @return the operation status, RT_EOK on success

 * @return the operation status, RT_EOK on successful
 */
rt_err_t rt_audio_pipe_init(struct rt_audio_pipe *pipe,
                            const char *name,
                            rt_int32_t flag,
                            rt_uint8_t *buf,
                            rt_size_t size)
{
    RT_ASSERT(pipe);
    RT_ASSERT(buf);

    /* initialize suspended list */
    rt_list_init(&pipe->suspended_read_list);
    rt_list_init(&pipe->suspended_write_list);

    /* initialize ring buffer */
    rt_ringbuffer_init(&pipe->ringbuffer, buf, size);

    pipe->flag = flag;

    /* create pipe */
    pipe->parent.type    = RT_Device_Class_Pipe;
#ifdef RT_USING_DEVICE_OPS
    pipe->parent.ops     = &audio_pipe_ops;
#else
    pipe->parent.init    = RT_NULL;
    pipe->parent.open    = RT_NULL;
    pipe->parent.close   = RT_NULL;
    pipe->parent.read    = rt_audio_pipe_read;
    pipe->parent.write   = rt_audio_pipe_write;
    pipe->parent.control = rt_audio_pipe_control;
#endif

    return rt_device_register(&(pipe->parent), name, RT_DEVICE_FLAG_RDWR);
}

/**
 * @brief This function will detach a pipe device from resource management