2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #ifndef AVCORE_IMGUTILS_H
20 #define AVCORE_IMGUTILS_H
24 * misc image utilities
27 #include "libavutil/pixfmt.h"
31 * Fill plane linesizes for an image with pixel format pix_fmt and
34 * @param linesizes array to be filled with the linesize for each plane
35 * @return >= 0 in case of success, a negative error code otherwise
37 int av_fill_image_linesizes(int linesizes[4], enum PixelFormat pix_fmt, int width);
40 * Fill plane data pointers for an image with pixel format pix_fmt and
43 * @param data pointers array to be filled with the pointer for each image plane
44 * @param ptr the pointer to a buffer which will contain the image
45 * @param linesizes[4] the array containing the linesize for each
46 * plane, should be filled by av_fill_image_linesizes()
47 * @return the size in bytes required for the image buffer, a negative
48 * error code in case of failure
50 int av_fill_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height,
51 uint8_t *ptr, const int linesizes[4]);
54 * Check if the given dimension of an image is valid, meaning that all
55 * bytes of the image can be addressed with a signed int.
57 * @param w the width of the picture
58 * @param h the height of the picture
59 * @param log_offset the offset to sum to the log level for logging with log_ctx
60 * @param log_ctx the parent logging context, it may be NULL
61 * @return >= 0 if valid, a negative error code otherwise
63 int av_check_image_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx);
65 #endif /* AVCORE_IMGUTILS_H */