76 lines
2.9 KiB
C
76 lines
2.9 KiB
C
/*
|
|
* 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_PARSEUTILS_H
|
|
#define AVCORE_PARSEUTILS_H
|
|
|
|
#include "libavutil/rational.h"
|
|
|
|
/**
|
|
* @file
|
|
* misc parsing utilities for libavcore
|
|
*/
|
|
|
|
/**
|
|
* Parse str and put in width_ptr and height_ptr the detected values.
|
|
*
|
|
* @param[in,out] width_ptr pointer to the variable which will contain the detected
|
|
* width value
|
|
* @param[in,out] height_ptr pointer to the variable which will contain the detected
|
|
* height value
|
|
* @param[in] str the string to parse: it has to be a string in the format
|
|
* width x height or a valid video size abbreviation.
|
|
* @return >= 0 on success, a negative error code otherwise
|
|
*/
|
|
int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str);
|
|
|
|
/**
|
|
* Parse str and store the detected values in *rate.
|
|
*
|
|
* @param[in,out] rate pointer to the AVRational which will contain the detected
|
|
* frame rate
|
|
* @param[in] str the string to parse: it has to be a string in the format
|
|
* rate_num / rate_den, a float number or a valid video rate abbreviation
|
|
* @return >= 0 on success, a negative error code otherwise
|
|
*/
|
|
int av_parse_video_rate(AVRational *rate, const char *str);
|
|
|
|
/**
|
|
* Put the RGBA values that correspond to color_string in rgba_color.
|
|
*
|
|
* @param color_string a string specifying a color. It can be the name of
|
|
* a color (case insensitive match) or a [0x|#]RRGGBB[AA] sequence,
|
|
* possibly followed by "@" and a string representing the alpha
|
|
* component.
|
|
* The alpha component may be a string composed by "0x" followed by an
|
|
* hexadecimal number or a decimal number between 0.0 and 1.0, which
|
|
* represents the opacity value (0x00/0.0 means completely transparent,
|
|
* 0xff/1.0 completely opaque).
|
|
* If the alpha component is not specified then 0xff is assumed.
|
|
* The string "random" will result in a random color.
|
|
* @param slen length of the initial part of color_string containing the
|
|
* color. It can be set to -1 if color_string is a null terminated string
|
|
* containing nothing else than the color.
|
|
* @return >= 0 in case of success, a negative value in case of
|
|
* failure (for example if color_string cannot be parsed).
|
|
*/
|
|
int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen,
|
|
void *log_ctx);
|
|
|
|
#endif /* AVCORE_PARSEUTILS_H */
|