diff options
Diffstat (limited to 'drivers/staging/media/davinci_vpfe/vpfe_video.h')
| -rw-r--r-- | drivers/staging/media/davinci_vpfe/vpfe_video.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.h b/drivers/staging/media/davinci_vpfe/vpfe_video.h new file mode 100644 index 00000000000..bf8af01d4a1 --- /dev/null +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.h @@ -0,0 +1,155 @@ +/* + * Copyright (C) 2012 Texas Instruments Inc + * + * 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 version 2. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Contributors: + * Manjunath Hadli <manjunath.hadli@ti.com> + * Prabhakar Lad <prabhakar.lad@ti.com> + */ + +#ifndef _DAVINCI_VPFE_VIDEO_H +#define _DAVINCI_VPFE_VIDEO_H + +#include <media/videobuf2-dma-contig.h> + +struct vpfe_device; + +/* + * struct vpfe_video_operations - VPFE video operations + * @queue: Resume streaming when a buffer is queued. Called on VIDIOC_QBUF + * if there was no buffer previously queued. + */ +struct vpfe_video_operations { + int(*queue) (struct vpfe_device *vpfe_dev, unsigned long addr); +}; + +enum vpfe_pipeline_stream_state { + VPFE_PIPELINE_STREAM_STOPPED = 0, + VPFE_PIPELINE_STREAM_CONTINUOUS = 1, + VPFE_PIPELINE_STREAM_SINGLESHOT = 2, +}; + +enum vpfe_video_state { + /* indicates that buffer is not queued */ + VPFE_VIDEO_BUFFER_NOT_QUEUED = 0, + /* indicates that buffer is queued */ + VPFE_VIDEO_BUFFER_QUEUED = 1, +}; + +struct vpfe_pipeline { + /* media pipeline */ + struct media_pipeline *pipe; + /* state of the pipeline, continuous, + * single-shot or stopped + */ + enum vpfe_pipeline_stream_state state; + /* number of active input video entities */ + unsigned int input_num; + /* number of active output video entities */ + unsigned int output_num; + /* input video nodes in case of single-shot mode */ + struct vpfe_video_device *inputs[10]; + /* capturing video nodes */ + struct vpfe_video_device *outputs[10]; +}; + +#define to_vpfe_pipeline(__e) \ + container_of((__e)->pipe, struct vpfe_pipeline, pipe) + +#define to_vpfe_video(vdev) \ + container_of(vdev, struct vpfe_video_device, video_dev) + +struct vpfe_cap_buffer { + struct vb2_buffer vb; + struct list_head list; +}; + +struct vpfe_video_device { + /* vpfe device */ + struct vpfe_device *vpfe_dev; + /* video dev */ + struct video_device video_dev; + /* media pad of video entity */ + struct media_pad pad; + /* video operations supported by video device */ + const struct vpfe_video_operations *ops; + /* type of the video buffers used by user */ + enum v4l2_buf_type type; + /* Indicates id of the field which is being captured */ + u32 field_id; + /* pipeline for which video device is part of */ + struct vpfe_pipeline pipe; + /* Indicates whether streaming started */ + u8 started; + /* Indicates state of the stream */ + unsigned int state; + /* current input at the sub device */ + int current_input; + /* + * This field keeps track of type of buffer exchange mechanism + * user has selected + */ + enum v4l2_memory memory; + /* Used to keep track of state of the priority */ + struct v4l2_prio_state prio; + /* number of open instances of the channel */ + u32 usrs; + /* flag to indicate whether decoder is initialized */ + u8 initialized; + /* skip frame count */ + u8 skip_frame_count; + /* skip frame count init value */ + u8 skip_frame_count_init; + /* time per frame for skipping */ + struct v4l2_fract timeperframe; + /* ptr to currently selected sub device */ + struct vpfe_ext_subdev_info *current_ext_subdev; + /* Pointer pointing to current vpfe_cap_buffer */ + struct vpfe_cap_buffer *cur_frm; + /* Pointer pointing to next vpfe_cap_buffer */ + struct vpfe_cap_buffer *next_frm; + /* Used to store pixel format */ + struct v4l2_format fmt; + struct vb2_queue buffer_queue; + /* allocator-specific contexts for each plane */ + struct vb2_alloc_ctx *alloc_ctx; + /* Queue of filled frames */ + struct list_head dma_queue; + spinlock_t irqlock; + /* IRQ lock for DMA queue */ + spinlock_t dma_queue_lock; + /* lock used to access this structure */ + struct mutex lock; + /* number of users performing IO */ + u32 io_usrs; + /* Currently selected or default standard */ + v4l2_std_id stdid; + /* + * offset where second field starts from the starting of the + * buffer for field seperated YCbCr formats + */ + u32 field_off; +}; + +int vpfe_video_is_pipe_ready(struct vpfe_pipeline *pipe); +void vpfe_video_unregister(struct vpfe_video_device *video); +int vpfe_video_register(struct vpfe_video_device *video, + struct v4l2_device *vdev); +int vpfe_video_init(struct vpfe_video_device *video, const char *name); +void vpfe_video_process_buffer_complete(struct vpfe_video_device *video); +void vpfe_video_schedule_bottom_field(struct vpfe_video_device *video); +void vpfe_video_schedule_next_buffer(struct vpfe_video_device *video); + +#endif /* _DAVINCI_VPFE_VIDEO_H */ |