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authorNuo Mi <nuomi2021@gmail.com>2024-08-23 23:03:53 +0800
committerNuo Mi <nuomi2021@gmail.com>2024-08-31 14:16:19 +0800
commit7bd22342c3bd92823475959850c00a0497855de2 (patch)
treeeb3184fb3e884c886365ad1b9fb02d4ebd881b72
parent7175544c0bab30c12c24a2c440bff40a28ea83d3 (diff)
downloadffmpeg-7bd22342c3bd92823475959850c00a0497855de2.tar.gz
avcodec/vvcdec: filter, fix uninitialized variables for YUV400 format
fix ==135000== Conditional jump or move depends on uninitialised value(s) ==135000== at 0x169FF95: vvc_deblock_bs (filter.c:699) and ==135000== Conditional jump or move depends on uninitialised value(s) ==135000== at 0x16A2E72: ff_vvc_alf_filter (filter.c:1217) Reported-by: James Almer <jamrial@gmail.com>
-rw-r--r--libavcodec/vvc/filter.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/libavcodec/vvc/filter.c b/libavcodec/vvc/filter.c
index c96e59df89..aa0d542271 100644
--- a/libavcodec/vvc/filter.c
+++ b/libavcodec/vvc/filter.c
@@ -686,11 +686,12 @@ static void vvc_deblock_bs(const VVCLocalContext *lc, const int x0, const int y0
const int ctb_size = sps->ctb_size_y;
const int x_end = FFMIN(x0 + ctb_size, pps->width) >> MIN_TU_LOG2;
const int y_end = FFMIN(y0 + ctb_size, pps->height) >> MIN_TU_LOG2;
+ const int has_chroma = !!sps->r->sps_chroma_format_idc;
deblock_bs_fn deblock_bs[] = {
vvc_deblock_bs_luma, vvc_deblock_bs_chroma
};
- for (int is_chroma = 0; is_chroma <= 1; is_chroma++) {
+ for (int is_chroma = 0; is_chroma <= has_chroma; is_chroma++) {
const int hs = sps->hshift[is_chroma];
const int vs = sps->vshift[is_chroma];
for (int y = y0 >> MIN_TU_LOG2; y < y_end; y++) {
@@ -1194,6 +1195,7 @@ void ff_vvc_alf_filter(VVCLocalContext *lc, const int x0, const int y0)
const int padded_stride = EDGE_EMU_BUFFER_STRIDE << ps;
const int padded_offset = padded_stride * ALF_PADDING_SIZE + (ALF_PADDING_SIZE << ps);
const int c_end = sps->r->sps_chroma_format_idc ? VVC_MAX_SAMPLE_ARRAYS : 1;
+ const int has_chroma = !!sps->r->sps_chroma_format_idc;
const int ctu_end = y0 + sps->ctb_size_y;
const ALFParams *alf = &CTB(fc->tab.alf, rx, ry);
int sb_edges[MAX_VBBS][MAX_EDGES], nb_sbs;
@@ -1214,7 +1216,7 @@ void ff_vvc_alf_filter(VVCLocalContext *lc, const int x0, const int y0)
uint8_t *src = POS(c_idx, sb->l, sb->t);
uint8_t *padded;
- if (alf->ctb_flag[c_idx] || (!c_idx && (alf->ctb_cc_idc[0] || alf->ctb_cc_idc[1]))) {
+ if (alf->ctb_flag[c_idx] || (!c_idx && has_chroma && (alf->ctb_cc_idc[0] || alf->ctb_cc_idc[1]))) {
padded = (c_idx ? lc->alf_buffer_chroma : lc->alf_buffer_luma) + padded_offset;
alf_prepare_buffer(fc, padded, src, x, y, rx, ry, width, height,
padded_stride, src_stride, c_idx, sb_edges[i]);