mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-28 20:53:54 +02:00
ad9df8bcfe
Found by reviewing CID1513722 Operands don't affect result Sponsored-by: Sovereign Tech Fund Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
50 lines
1.9 KiB
C
50 lines
1.9 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 AVFILTER_SCALE_EVAL_H
|
|
#define AVFILTER_SCALE_EVAL_H
|
|
|
|
#include "avfilter.h"
|
|
|
|
/**
|
|
* Parse and evaluate string expressions for width and height. Upon success,
|
|
* ff_scale_adjust_dimensions must be called with evaluated width and height
|
|
* to obtain actual target dimensions.
|
|
*
|
|
* Returns 0 upon success, negative value if one of the expressions could
|
|
* not be parsed or if NaN was the result of their evaluation.
|
|
*/
|
|
int ff_scale_eval_dimensions(void *ctx,
|
|
const char *w_expr, const char *h_expr,
|
|
AVFilterLink *inlink, AVFilterLink *outlink,
|
|
int *ret_w, int *ret_h);
|
|
|
|
/**
|
|
* Transform evaluated width and height obtained from ff_scale_eval_dimensions
|
|
* into actual target width and height for scaling. Adjustment can occur if one
|
|
* or both of the evaluated values are of the form '-n' or if
|
|
* force_original_aspect_ratio is set. force_divisible_by is used only when
|
|
* force_original_aspect_ratio is set and must be at least 1.
|
|
*
|
|
* Returns negative error code on error or non negative on success
|
|
*/
|
|
int ff_scale_adjust_dimensions(AVFilterLink *inlink,
|
|
int *ret_w, int *ret_h,
|
|
int force_original_aspect_ratio, int force_divisible_by);
|
|
#endif
|