199 строки
6.5 KiB
C
199 строки
6.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* Copyright (C) 2012-2016 Mentor Graphics Inc.
|
|
*
|
|
* i.MX Queued image conversion support, with tiling and rotation.
|
|
*/
|
|
#ifndef __IMX_IPU_IMAGE_CONVERT_H__
|
|
#define __IMX_IPU_IMAGE_CONVERT_H__
|
|
|
|
#include <video/imx-ipu-v3.h>
|
|
|
|
struct ipu_image_convert_ctx;
|
|
|
|
/**
|
|
* struct ipu_image_convert_run - image conversion run request struct
|
|
*
|
|
* @ctx: the conversion context
|
|
* @in_phys: dma addr of input image buffer for this run
|
|
* @out_phys: dma addr of output image buffer for this run
|
|
* @status: completion status of this run
|
|
*/
|
|
struct ipu_image_convert_run {
|
|
struct ipu_image_convert_ctx *ctx;
|
|
|
|
dma_addr_t in_phys;
|
|
dma_addr_t out_phys;
|
|
|
|
int status;
|
|
|
|
/* internal to image converter, callers don't touch */
|
|
struct list_head list;
|
|
};
|
|
|
|
/**
|
|
* ipu_image_convert_cb_t - conversion callback function prototype
|
|
*
|
|
* @run: the completed conversion run pointer
|
|
* @ctx: a private context pointer for the callback
|
|
*/
|
|
typedef void (*ipu_image_convert_cb_t)(struct ipu_image_convert_run *run,
|
|
void *ctx);
|
|
|
|
/**
|
|
* ipu_image_convert_enum_format() - enumerate the image converter's
|
|
* supported input and output pixel formats.
|
|
*
|
|
* @index: pixel format index
|
|
* @fourcc: v4l2 fourcc for this index
|
|
*
|
|
* Returns 0 with a valid index and fills in v4l2 fourcc, -EINVAL otherwise.
|
|
*
|
|
* In V4L2, drivers can call ipu_image_enum_format() in .enum_fmt.
|
|
*/
|
|
int ipu_image_convert_enum_format(int index, u32 *fourcc);
|
|
|
|
/**
|
|
* ipu_image_convert_adjust() - adjust input/output images to IPU restrictions.
|
|
*
|
|
* @in: input image format, adjusted on return
|
|
* @out: output image format, adjusted on return
|
|
* @rot_mode: rotation mode
|
|
*
|
|
* In V4L2, drivers can call ipu_image_convert_adjust() in .try_fmt.
|
|
*/
|
|
void ipu_image_convert_adjust(struct ipu_image *in, struct ipu_image *out,
|
|
enum ipu_rotate_mode rot_mode);
|
|
|
|
/**
|
|
* ipu_image_convert_verify() - verify that input/output image formats
|
|
* and rotation mode meet IPU restrictions.
|
|
*
|
|
* @in: input image format
|
|
* @out: output image format
|
|
* @rot_mode: rotation mode
|
|
*
|
|
* Returns 0 if the formats and rotation mode meet IPU restrictions,
|
|
* -EINVAL otherwise.
|
|
*/
|
|
int ipu_image_convert_verify(struct ipu_image *in, struct ipu_image *out,
|
|
enum ipu_rotate_mode rot_mode);
|
|
|
|
/**
|
|
* ipu_image_convert_prepare() - prepare a conversion context.
|
|
*
|
|
* @ipu: the IPU handle to use for the conversions
|
|
* @ic_task: the IC task to use for the conversions
|
|
* @in: input image format
|
|
* @out: output image format
|
|
* @rot_mode: rotation mode
|
|
* @complete: run completion callback
|
|
* @complete_context: a context pointer for the completion callback
|
|
*
|
|
* Returns an opaque conversion context pointer on success, error pointer
|
|
* on failure. The input/output formats and rotation mode must already meet
|
|
* IPU retrictions.
|
|
*
|
|
* In V4L2, drivers should call ipu_image_convert_prepare() at streamon.
|
|
*/
|
|
struct ipu_image_convert_ctx *
|
|
ipu_image_convert_prepare(struct ipu_soc *ipu, enum ipu_ic_task ic_task,
|
|
struct ipu_image *in, struct ipu_image *out,
|
|
enum ipu_rotate_mode rot_mode,
|
|
ipu_image_convert_cb_t complete,
|
|
void *complete_context);
|
|
|
|
/**
|
|
* ipu_image_convert_unprepare() - unprepare a conversion context.
|
|
*
|
|
* @ctx: the conversion context pointer to unprepare
|
|
*
|
|
* Aborts any active or pending conversions for this context and
|
|
* frees the context. Any currently active or pending runs belonging
|
|
* to this context are returned via the completion callback with an
|
|
* error run status.
|
|
*
|
|
* In V4L2, drivers should call ipu_image_convert_unprepare() at
|
|
* streamoff.
|
|
*/
|
|
void ipu_image_convert_unprepare(struct ipu_image_convert_ctx *ctx);
|
|
|
|
/**
|
|
* ipu_image_convert_queue() - queue a conversion run
|
|
*
|
|
* @run: the run request pointer
|
|
*
|
|
* ipu_image_convert_run must be dynamically allocated (_not_ as a local
|
|
* var) by callers and filled in with a previously prepared conversion
|
|
* context handle and the dma addr's of the input and output image buffers
|
|
* for this conversion run.
|
|
*
|
|
* When this conversion completes, the run pointer is returned via the
|
|
* completion callback. The caller is responsible for freeing the run
|
|
* object after it completes.
|
|
*
|
|
* In V4L2, drivers should call ipu_image_convert_queue() while
|
|
* streaming to queue the conversion of a received input buffer.
|
|
* For example mem2mem devices this would be called in .device_run.
|
|
*/
|
|
int ipu_image_convert_queue(struct ipu_image_convert_run *run);
|
|
|
|
/**
|
|
* ipu_image_convert_abort() - abort conversions
|
|
*
|
|
* @ctx: the conversion context pointer
|
|
*
|
|
* This will abort any active or pending conversions for this context.
|
|
* Any currently active or pending runs belonging to this context are
|
|
* returned via the completion callback with an error run status.
|
|
*/
|
|
void ipu_image_convert_abort(struct ipu_image_convert_ctx *ctx);
|
|
|
|
/**
|
|
* ipu_image_convert() - asynchronous image conversion request
|
|
*
|
|
* @ipu: the IPU handle to use for the conversion
|
|
* @ic_task: the IC task to use for the conversion
|
|
* @in: input image format
|
|
* @out: output image format
|
|
* @rot_mode: rotation mode
|
|
* @complete: run completion callback
|
|
* @complete_context: a context pointer for the completion callback
|
|
*
|
|
* Request a single image conversion. Returns the run that has been queued.
|
|
* A conversion context is automatically created and is available in run->ctx.
|
|
* As with ipu_image_convert_prepare(), the input/output formats and rotation
|
|
* mode must already meet IPU retrictions.
|
|
*
|
|
* On successful return the caller can queue more run requests if needed, using
|
|
* the prepared context in run->ctx. The caller is responsible for unpreparing
|
|
* the context when no more conversion requests are needed.
|
|
*/
|
|
struct ipu_image_convert_run *
|
|
ipu_image_convert(struct ipu_soc *ipu, enum ipu_ic_task ic_task,
|
|
struct ipu_image *in, struct ipu_image *out,
|
|
enum ipu_rotate_mode rot_mode,
|
|
ipu_image_convert_cb_t complete,
|
|
void *complete_context);
|
|
|
|
/**
|
|
* ipu_image_convert_sync() - synchronous single image conversion request
|
|
*
|
|
* @ipu: the IPU handle to use for the conversion
|
|
* @ic_task: the IC task to use for the conversion
|
|
* @in: input image format
|
|
* @out: output image format
|
|
* @rot_mode: rotation mode
|
|
*
|
|
* Carry out a single image conversion. Returns when the conversion
|
|
* completes. The input/output formats and rotation mode must already
|
|
* meet IPU retrictions. The created context is automatically unprepared
|
|
* and the run freed on return.
|
|
*/
|
|
int ipu_image_convert_sync(struct ipu_soc *ipu, enum ipu_ic_task ic_task,
|
|
struct ipu_image *in, struct ipu_image *out,
|
|
enum ipu_rotate_mode rot_mode);
|
|
|
|
|
|
#endif /* __IMX_IPU_IMAGE_CONVERT_H__ */
|