152 lines
5.0 KiB
C
152 lines
5.0 KiB
C
/***************************************************************************
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* boards/arm/cxd56xx/spresense/include/cxd56_imageproc.h
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*
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* Copyright 2018 Sony Semiconductor Solutions Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of Sony Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __BOARDS_ARM_CXD56XX_SPRESENSE_INCLUDE_CXD56_IMAGEPROC_H
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#define __BOARDS_ARM_CXD56XX_SPRESENSE_INCLUDE_CXD56_IMAGEPROC_H
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Structure of rectangle coordinates from left top point to
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* right buttom point.
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*/
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struct imageproc_rect_s
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{
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uint16_t x1; /* X coordinate of left top point */
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uint16_t y1; /* Y coordinate of left top point */
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uint16_t x2; /* X coordinate of rignt bottom point */
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uint16_t y2; /* Y coordinate of rignt bottom point */
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};
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typedef struct imageproc_rect_s imageproc_rect_t;
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/* Initialize imageproc library
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*/
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void imageproc_initialize(void);
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/* Finalize imageproc library
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*/
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void imageproc_finalize(void);
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/* Convert color format (YUV to RGB)
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*
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* TODO: need more description here
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*
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* [in,out] ibuf: image
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* [in] hsize: Horizontal size
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* [in] vsize: Vertical size
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*/
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void imageproc_convert_yuv2rgb(uint8_t * ibuf, uint32_t hsize,
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uint32_t vsize);
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/* Convert color format (YUV to grayscale)
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*
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* TODO: need more description here
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*
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* [in] ibuf: Input image
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* [out] obuf: Output buffer
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* [in] hsize: Horizontal size
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* [in] vsize: Vertical size
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*/
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void imageproc_convert_yuv2gray(uint8_t * ibuf, uint8_t * obuf,
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size_t hsize, size_t vsize);
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/* Resize image
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*
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* Resize image specified by ibuf to ohsize, ovsize. Processed
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* image will be stored to obuf.
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*
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* For ohsize and ovsize, specify output size calculated by multiply
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* in range 1/2^n to 2^n (n=0..5) against ihsize and ivsize.
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*
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* This function can be processing for YUV422 color format.
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* So all of specified sizes must be multiple of 2.
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*
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* And there is limitation about output size below.
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*
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* * Shrink
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* + Horizontal size least 12 pixels
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* + Vertical size least 12 pixels
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* * Enlarge
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* + Horizontal size up to 768 pixels
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* + Vertical size up to 1024 pixels
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*
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* [in] ibuf: Input image
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* [in] ihsize: Input horizontal size
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* [in] ivsize: Input vertical size
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* [out] obuf: Output buffer
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* [in] ohsize: Output horizontal size
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* [in] ovsize: Output vertical size
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* [in] bpp: Bits per pixel (16 or 8)
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*
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* return 0 on success, otherwise error code.
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*/
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int imageproc_resize(uint8_t * ibuf, uint16_t ihsize, uint16_t ivsize,
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uint8_t * obuf, uint16_t ohsize, uint16_t ovsize,
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int bpp);
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/* Clip and Resize image
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*
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* [in] ibuf: Input image
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* [in] ihsize: Input horizontal size
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* [in] ivsize: Input vertical size
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* [out] obuf: Output buffer
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* [in] ohsize: Output horizontal size
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* [in] ovsize: Output vertical size
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* [in] bpp: Bits per pixel (16 or 8)
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* [in] clip_rect: Clipping rectangle on input image.
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*
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* return 0 on success, otherwise error code.
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*/
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int imageproc_clip_and_resize(uint8_t * ibuf, uint16_t ihsize,
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uint16_t ivsize, uint8_t * obuf,
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uint16_t ohsize, uint16_t ovsize, int bpp,
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imageproc_rect_t * clip_rect);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __BOARDS_ARM_CXD56XX_SPRESENSE_INCLUDE_CXD56_IMAGEPROC_H */
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