mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
2.5 KiB
73 lines
2.5 KiB
/* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* FFmpeg 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 |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#ifndef AVCORE_IMGUTILS_H |
|
#define AVCORE_IMGUTILS_H |
|
|
|
/** |
|
* @file |
|
* misc image utilities |
|
*/ |
|
|
|
#include "libavutil/pixfmt.h" |
|
#include "avcore.h" |
|
|
|
/** |
|
* Compute the size of an image line with format pix_fmt and width |
|
* width for the plane plane. |
|
* |
|
* @return the computed size in bytes |
|
*/ |
|
int av_get_image_linesize(enum PixelFormat pix_fmt, int width, int plane); |
|
|
|
/** |
|
* Fill plane linesizes for an image with pixel format pix_fmt and |
|
* width width. |
|
* |
|
* @param linesizes array to be filled with the linesize for each plane |
|
* @return >= 0 in case of success, a negative error code otherwise |
|
*/ |
|
int av_fill_image_linesizes(int linesizes[4], enum PixelFormat pix_fmt, int width); |
|
|
|
/** |
|
* Fill plane data pointers for an image with pixel format pix_fmt and |
|
* height height. |
|
* |
|
* @param data pointers array to be filled with the pointer for each image plane |
|
* @param ptr the pointer to a buffer which will contain the image |
|
* @param linesizes[4] the array containing the linesize for each |
|
* plane, should be filled by av_fill_image_linesizes() |
|
* @return the size in bytes required for the image buffer, a negative |
|
* error code in case of failure |
|
*/ |
|
int av_fill_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height, |
|
uint8_t *ptr, const int linesizes[4]); |
|
|
|
/** |
|
* Check if the given dimension of an image is valid, meaning that all |
|
* bytes of the image can be addressed with a signed int. |
|
* |
|
* @param w the width of the picture |
|
* @param h the height of the picture |
|
* @param log_offset the offset to sum to the log level for logging with log_ctx |
|
* @param log_ctx the parent logging context, it may be NULL |
|
* @return >= 0 if valid, a negative error code otherwise |
|
*/ |
|
int av_check_image_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx); |
|
|
|
#endif /* AVCORE_IMGUTILS_H */
|
|
|