mirror of https://git.ffmpeg.org/ffmpeg.git
74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCORE_IMGUTILS_H
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#define AVCORE_IMGUTILS_H
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/**
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* @file
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* misc image utilities
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*/
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#include "libavutil/pixfmt.h"
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#include "avcore.h"
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/**
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* Compute the size of an image line with format pix_fmt and width
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* width for the plane plane.
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*
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* @return the computed size in bytes
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*/
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int av_get_image_linesize(enum PixelFormat pix_fmt, int width, int plane);
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/**
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* Fill plane linesizes for an image with pixel format pix_fmt and
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* width width.
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*
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* @param linesizes array to be filled with the linesize for each plane
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* @return >= 0 in case of success, a negative error code otherwise
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*/
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int av_fill_image_linesizes(int linesizes[4], enum PixelFormat pix_fmt, int width);
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/**
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* Fill plane data pointers for an image with pixel format pix_fmt and
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* height height.
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*
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* @param data pointers array to be filled with the pointer for each image plane
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* @param ptr the pointer to a buffer which will contain the image
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* @param linesizes[4] the array containing the linesize for each
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* plane, should be filled by av_fill_image_linesizes()
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* @return the size in bytes required for the image buffer, a negative
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* error code in case of failure
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*/
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int av_fill_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height,
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uint8_t *ptr, const int linesizes[4]);
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/**
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* Check if the given dimension of an image is valid, meaning that all
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* bytes of the image can be addressed with a signed int.
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*
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* @param w the width of the picture
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* @param h the height of the picture
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* @param log_offset the offset to sum to the log level for logging with log_ctx
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* @param log_ctx the parent logging context, it may be NULL
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* @return >= 0 if valid, a negative error code otherwise
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*/
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int av_check_image_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx);
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#endif /* AVCORE_IMGUTILS_H */
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