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avfilter/scale_eval: Use 64bit, check values in ff_scale_adjust_dimensions()

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Found by reviewing CID1513722 Operands don't affect result

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-07-08 22:01:29 +02:00
parent 6db4e326c2
commit ad9df8bcfe
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GPG Key ID: B18E8928B3948D64
2 changed files with 7 additions and 4 deletions
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9
libavfilter/scale_eval.c
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@ -114,7 +114,7 @@ int ff_scale_adjust_dimensions(AVFilterLink *inlink,
int *ret_w, int *ret_h,
int force_original_aspect_ratio, int force_divisible_by)
{
int w, h;
int64_t w, h;
int factor_w, factor_h;
w = *ret_w;
@ -149,9 +149,9 @@ int ff_scale_adjust_dimensions(AVFilterLink *inlink,
* unless force_divisible_by is defined as well */
if (force_original_aspect_ratio) {
// Including force_divisible_by here rounds to the nearest multiple of it.
int tmp_w = av_rescale(h, inlink->w, inlink->h * (int64_t)force_divisible_by)
int64_t tmp_w = av_rescale(h, inlink->w, inlink->h * (int64_t)force_divisible_by)
* force_divisible_by;
int tmp_h = av_rescale(w, inlink->h, inlink->w * (int64_t)force_divisible_by)
int64_t tmp_h = av_rescale(w, inlink->h, inlink->w * (int64_t)force_divisible_by)
* force_divisible_by;
if (force_original_aspect_ratio == 1) {
@ -173,6 +173,9 @@ int ff_scale_adjust_dimensions(AVFilterLink *inlink,
}
}
if ((int32_t)w != w || (int32_t)h != h)
return AVERROR(EINVAL);
*ret_w = w;
*ret_h = h;

2
libavfilter/scale_eval.h
View File

@ -41,7 +41,7 @@ int ff_scale_eval_dimensions(void *ctx,
* 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 0.
* Returns negative error code on error or non negative on success
*/
int ff_scale_adjust_dimensions(AVFilterLink *inlink,
int *ret_w, int *ret_h,