/* * vimc-core.h Virtual Media Controller Driver * * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #ifndef _VIMC_CORE_H_ #define _VIMC_CORE_H_ #include <linux/slab.h> #include <media/v4l2-device.h> /** * struct vimc_pix_map - maps media bus code with v4l2 pixel format * * @code: media bus format code defined by MEDIA_BUS_FMT_* macros * @bbp: number of bytes each pixel occupies * @pixelformat: pixel format devined by V4L2_PIX_FMT_* macros * * Struct which matches the MEDIA_BUS_FMT_* codes with the corresponding * V4L2_PIX_FMT_* fourcc pixelformat and its bytes per pixel (bpp) */ struct vimc_pix_map { unsigned int code; unsigned int bpp; u32 pixelformat; }; /** * struct vimc_ent_device - core struct that represents a node in the topology * * @ent: the pointer to struct media_entity for the node * @pads: the list of pads of the node * @destroy: callback to destroy the node * @process_frame: callback send a frame to that node * * Each node of the topology must create a vimc_ent_device struct. Depending on * the node it will be of an instance of v4l2_subdev or video_device struct * where both contains a struct media_entity. * Those structures should embedded the vimc_ent_device struct through * v4l2_set_subdevdata() and video_set_drvdata() respectivaly, allowing the * vimc_ent_device struct to be retrieved from the corresponding struct * media_entity */ struct vimc_ent_device { struct media_entity *ent; struct media_pad *pads; void (*destroy)(struct vimc_ent_device *); void (*process_frame)(struct vimc_ent_device *ved, struct media_pad *sink, const void *frame); }; /** * vimc_propagate_frame - propagate a frame through the topology * * @src: the source pad where the frame is being originated * @frame: the frame to be propagated * * This function will call the process_frame callback from the vimc_ent_device * struct of the nodes directly connected to the @src pad */ int vimc_propagate_frame(struct media_pad *src, const void *frame); /** * vimc_pads_init - initialize pads * * @num_pads: number of pads to initialize * @pads_flags: flags to use in each pad * * Helper functions to allocate/initialize pads */ struct media_pad *vimc_pads_init(u16 num_pads, const unsigned long *pads_flag); /** * vimc_pads_cleanup - free pads * * @pads: pointer to the pads * * Helper function to free the pads initialized with vimc_pads_init */
static inline void vimc_pads_cleanup(struct media_pad *pads) { kfree(pads); }Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Helen Mae Koike Fornazier | 17 | 100.00% | 1 | 100.00% |
| Total | 17 | 100.00% | 1 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp |
| Helen Mae Koike Fornazier | 152 | 100.00% | 1 | 100.00% |
| Total | 152 | 100.00% | 1 | 100.00% |