[FFmpeg-cvslog] avcodec/cbs_h266: stricter validation for subpicture's max width and height

[Nuo Mi]

ffmpeg | branch: master | Nuo Mi <nuomi2021 at gmail.com> | Sat Nov 23 17:32:34 2024 +0800| [98698ed3c24bfd0b1e6e6db943b5f25f6046cee7] | committer: Nuo Mi

avcodec/cbs_h266: stricter validation for subpicture's max width and height

Co-authored-by: Frank Plowman <post at frankplowman.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=98698ed3c24bfd0b1e6e6db943b5f25f6046cee7
---

 libavcodec/cbs_h266_syntax_template.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libavcodec/cbs_h266_syntax_template.c b/libavcodec/cbs_h266_syntax_template.c
index fd42734166..43def9220f 100644
--- a/libavcodec/cbs_h266_syntax_template.c
+++ b/libavcodec/cbs_h266_syntax_template.c
@@ -1147,11 +1147,11 @@ static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw,
             infer(sps_subpic_ctu_top_left_x[0], 0);
             infer(sps_subpic_ctu_top_left_y[0], 0);
             if (current->sps_pic_width_max_in_luma_samples > ctb_size_y)
-                ubs(wlen, sps_subpic_width_minus1[0], 1, 0);
+                us(wlen, sps_subpic_width_minus1[0], 0, max_width_minus1, 1, 0);
             else
                 infer(sps_subpic_width_minus1[0], max_width_minus1);
             if (current->sps_pic_height_max_in_luma_samples > ctb_size_y)
-                ubs(hlen, sps_subpic_height_minus1[0], 1, 0);
+                us(hlen, sps_subpic_height_minus1[0], 0, max_width_minus1, 1, 0);
             else
                 infer(sps_subpic_height_minus1[0], max_height_minus1);
             if (!current->sps_independent_subpics_flag) {
@@ -1201,14 +1201,14 @@ static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw,
 
                     if (i < current->sps_num_subpics_minus1 &&
                         current->sps_pic_width_max_in_luma_samples > ctb_size_y) {
-                        us(wlen, sps_subpic_width_minus1[i], min_width, MAX_UINT_BITS(wlen), 1, i);
+                        us(wlen, sps_subpic_width_minus1[i], min_width, max_width_minus1, 1, i);
                     } else {
                         infer(sps_subpic_width_minus1[i], max_width_minus1);
                     }
 
                     if (i < current->sps_num_subpics_minus1 &&
                         current->sps_pic_height_max_in_luma_samples > ctb_size_y) {
-                        us(hlen, sps_subpic_height_minus1[i], min_height, MAX_UINT_BITS(hlen), 1, i);
+                        us(hlen, sps_subpic_height_minus1[i], min_height, max_height_minus1, 1, i);
                     } else {
                         infer(sps_subpic_height_minus1[i], max_height_minus1);
                     }