diff options
Diffstat (limited to 'ANDROID_3.4.5/include/media/v4l2-mem2mem.h')
| -rw-r--r-- | ANDROID_3.4.5/include/media/v4l2-mem2mem.h | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/ANDROID_3.4.5/include/media/v4l2-mem2mem.h b/ANDROID_3.4.5/include/media/v4l2-mem2mem.h deleted file mode 100644 index 16ac4733..00000000 --- a/ANDROID_3.4.5/include/media/v4l2-mem2mem.h +++ /dev/null @@ -1,215 +0,0 @@ -/* - * Memory-to-memory device framework for Video for Linux 2. - * - * Helper functions for devices that use memory buffers for both source - * and destination. - * - * Copyright (c) 2009 Samsung Electronics Co., Ltd. - * Pawel Osciak, <pawel@osciak.com> - * Marek Szyprowski, <m.szyprowski@samsung.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 - */ - -#ifndef _MEDIA_V4L2_MEM2MEM_H -#define _MEDIA_V4L2_MEM2MEM_H - -#include <media/videobuf2-core.h> - -/** - * struct v4l2_m2m_ops - mem-to-mem device driver callbacks - * @device_run: required. Begin the actual job (transaction) inside this - * callback. - * The job does NOT have to end before this callback returns - * (and it will be the usual case). When the job finishes, - * v4l2_m2m_job_finish() has to be called. - * @job_ready: optional. Should return 0 if the driver does not have a job - * fully prepared to run yet (i.e. it will not be able to finish a - * transaction without sleeping). If not provided, it will be - * assumed that one source and one destination buffer are all - * that is required for the driver to perform one full transaction. - * This method may not sleep. - * @job_abort: required. Informs the driver that it has to abort the currently - * running transaction as soon as possible (i.e. as soon as it can - * stop the device safely; e.g. in the next interrupt handler), - * even if the transaction would not have been finished by then. - * After the driver performs the necessary steps, it has to call - * v4l2_m2m_job_finish() (as if the transaction ended normally). - * This function does not have to (and will usually not) wait - * until the device enters a state when it can be stopped. - */ -struct v4l2_m2m_ops { - void (*device_run)(void *priv); - int (*job_ready)(void *priv); - void (*job_abort)(void *priv); - void (*lock)(void *priv); - void (*unlock)(void *priv); -}; - -struct v4l2_m2m_dev; - -struct v4l2_m2m_queue_ctx { -/* private: internal use only */ - struct vb2_queue q; - - /* Queue for buffers ready to be processed as soon as this - * instance receives access to the device */ - struct list_head rdy_queue; - spinlock_t rdy_spinlock; - u8 num_rdy; -}; - -struct v4l2_m2m_ctx { -/* private: internal use only */ - struct v4l2_m2m_dev *m2m_dev; - - /* Capture (output to memory) queue context */ - struct v4l2_m2m_queue_ctx cap_q_ctx; - - /* Output (input from memory) queue context */ - struct v4l2_m2m_queue_ctx out_q_ctx; - - /* For device job queue */ - struct list_head queue; - unsigned long job_flags; - wait_queue_head_t finished; - - /* Instance private data */ - void *priv; -}; - -struct v4l2_m2m_buffer { - struct vb2_buffer vb; - struct list_head list; -}; - -void *v4l2_m2m_get_curr_priv(struct v4l2_m2m_dev *m2m_dev); - -struct vb2_queue *v4l2_m2m_get_vq(struct v4l2_m2m_ctx *m2m_ctx, - enum v4l2_buf_type type); - -void v4l2_m2m_job_finish(struct v4l2_m2m_dev *m2m_dev, - struct v4l2_m2m_ctx *m2m_ctx); - -static inline void -v4l2_m2m_buf_done(struct vb2_buffer *buf, enum vb2_buffer_state state) -{ - vb2_buffer_done(buf, state); -} - -int v4l2_m2m_reqbufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, - struct v4l2_requestbuffers *reqbufs); - -int v4l2_m2m_querybuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, - struct v4l2_buffer *buf); - -int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, - struct v4l2_buffer *buf); -int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, - struct v4l2_buffer *buf); - -int v4l2_m2m_streamon(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, - enum v4l2_buf_type type); -int v4l2_m2m_streamoff(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, - enum v4l2_buf_type type); - -unsigned int v4l2_m2m_poll(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, - struct poll_table_struct *wait); - -int v4l2_m2m_mmap(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, - struct vm_area_struct *vma); - -struct v4l2_m2m_dev *v4l2_m2m_init(struct v4l2_m2m_ops *m2m_ops); -void v4l2_m2m_release(struct v4l2_m2m_dev *m2m_dev); - -struct v4l2_m2m_ctx *v4l2_m2m_ctx_init(struct v4l2_m2m_dev *m2m_dev, - void *drv_priv, - int (*queue_init)(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)); - -void v4l2_m2m_ctx_release(struct v4l2_m2m_ctx *m2m_ctx); - -void v4l2_m2m_buf_queue(struct v4l2_m2m_ctx *m2m_ctx, struct vb2_buffer *vb); - -/** - * v4l2_m2m_num_src_bufs_ready() - return the number of source buffers ready for - * use - */ -static inline -unsigned int v4l2_m2m_num_src_bufs_ready(struct v4l2_m2m_ctx *m2m_ctx) -{ - return m2m_ctx->cap_q_ctx.num_rdy; -} - -/** - * v4l2_m2m_num_src_bufs_ready() - return the number of destination buffers - * ready for use - */ -static inline -unsigned int v4l2_m2m_num_dst_bufs_ready(struct v4l2_m2m_ctx *m2m_ctx) -{ - return m2m_ctx->out_q_ctx.num_rdy; -} - -void *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx); - -/** - * v4l2_m2m_next_src_buf() - return next source buffer from the list of ready - * buffers - */ -static inline void *v4l2_m2m_next_src_buf(struct v4l2_m2m_ctx *m2m_ctx) -{ - return v4l2_m2m_next_buf(&m2m_ctx->out_q_ctx); -} - -/** - * v4l2_m2m_next_dst_buf() - return next destination buffer from the list of - * ready buffers - */ -static inline void *v4l2_m2m_next_dst_buf(struct v4l2_m2m_ctx *m2m_ctx) -{ - return v4l2_m2m_next_buf(&m2m_ctx->cap_q_ctx); -} - -/** - * v4l2_m2m_get_src_vq() - return vb2_queue for source buffers - */ -static inline -struct vb2_queue *v4l2_m2m_get_src_vq(struct v4l2_m2m_ctx *m2m_ctx) -{ - return &m2m_ctx->out_q_ctx.q; -} - -/** - * v4l2_m2m_get_dst_vq() - return vb2_queue for destination buffers - */ -static inline -struct vb2_queue *v4l2_m2m_get_dst_vq(struct v4l2_m2m_ctx *m2m_ctx) -{ - return &m2m_ctx->cap_q_ctx.q; -} - -void *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx); - -/** - * v4l2_m2m_src_buf_remove() - take off a source buffer from the list of ready - * buffers and return it - */ -static inline void *v4l2_m2m_src_buf_remove(struct v4l2_m2m_ctx *m2m_ctx) -{ - return v4l2_m2m_buf_remove(&m2m_ctx->out_q_ctx); -} - -/** - * v4l2_m2m_dst_buf_remove() - take off a destination buffer from the list of - * ready buffers and return it - */ -static inline void *v4l2_m2m_dst_buf_remove(struct v4l2_m2m_ctx *m2m_ctx) -{ - return v4l2_m2m_buf_remove(&m2m_ctx->cap_q_ctx); -} - -#endif /* _MEDIA_V4L2_MEM2MEM_H */ - |