1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * vimc-streamer.h Virtual Media Controller Driver 4 * 5 * Copyright (C) 2018 Lucas A. M. Magalhães <lucmaga@gmail.com> 6 * 7 */ 8 9 #ifndef _VIMC_STREAMER_H_ 10 #define _VIMC_STREAMER_H_ 11 12 #include <media/media-device.h> 13 14 #include "vimc-common.h" 15 16 #define VIMC_STREAMER_PIPELINE_MAX_SIZE 16 17 18 /** 19 * struct vimc_stream - struct that represents a stream in the pipeline 20 * 21 * @pipe: the media pipeline object associated with this stream 22 * @ved_pipeline: array containing all the entities participating in the 23 * stream. The order is from a video device (usually a 24 * capture device) where stream_on was called, to the 25 * entity generating the first base image to be 26 * processed in the pipeline. 27 * @pipe_size: size of @ved_pipeline 28 * @kthread: thread that generates the frames of the stream. 29 * 30 * When the user call stream_on in a video device, struct vimc_stream is 31 * used to keep track of all entities and subdevices that generates and 32 * process frames for the stream. 33 */ 34 struct vimc_stream { 35 struct media_pipeline pipe; 36 struct vimc_ent_device *ved_pipeline[VIMC_STREAMER_PIPELINE_MAX_SIZE]; 37 unsigned int pipe_size; 38 struct task_struct *kthread; 39 }; 40 41 int vimc_streamer_s_stream(struct vimc_stream *stream, 42 struct vimc_ent_device *ved, 43 int enable); 44 45 #endif //_VIMC_STREAMER_H_ 46