Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

vc1dec: Don't apply the loop filter on fields

Browse Source 
Fixes read of uninitialized memory.

Based on a patch by Michael Niedermayer.

Signed-off-by: Martin Storsjö <martin@martin.st>
pull/18/head
Martin Storsjö 12 years ago
parent fe06795d78
commit 5d9d8461fb
2 changed files with 32 additions and 31 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 5
      libavcodec/vc1dec.c
  2. 58
      tests/ref/fate/vc1_sa10143

5
libavcodec/vc1dec.c
Unescape View File

@ -4619,7 +4619,8 @@ static void vc1_decode_p_blocks(VC1Context *v)
break;
}
apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY);
apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY) &&
v->fcm == PROGRESSIVE;
s->first_slice_line = 1;
memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride);
for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
@ -4633,7 +4634,7 @@ static void vc1_decode_p_blocks(VC1Context *v)
else if (v->fcm == ILACE_FRAME)
vc1_decode_p_mb_intfr(v);
else vc1_decode_p_mb(v);
if (s->mb_y != s->start_mb_y && apply_loop_filter && v->fcm == PROGRESSIVE)
if (s->mb_y != s->start_mb_y && apply_loop_filter)
vc1_apply_p_loop_filter(v);
if (get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
// TODO: may need modification to handle slice coding

58
tests/ref/fate/vc1_sa10143
Unescape View File

@ -1,31 +1,31 @@
#tb 0: 1/25
0, 0, 0, 1, 518400, 0x89407f55
0, 2, 2, 1, 518400, 0xeb8d84a1
0, 3, 3, 1, 518400, 0x2121ff57
0, 4, 4, 1, 518400, 0xd81adb3d
0, 5, 5, 1, 518400, 0x01e36aa2
0, 6, 6, 1, 518400, 0x6b802361
0, 7, 7, 1, 518400, 0xc8403c77
0, 8, 8, 1, 518400, 0xdd342b5d
0, 9, 9, 1, 518400, 0x2100eea5
0, 10, 10, 1, 518400, 0x92a22da6
0, 11, 11, 1, 518400, 0x6bacdef7
0, 12, 12, 1, 518400, 0x4a00715f
0, 13, 13, 1, 518400, 0x59b98727
0, 14, 14, 1, 518400, 0xbf912ee1
0, 15, 15, 1, 518400, 0x8c966cd6
0, 16, 16, 1, 518400, 0x2c9a2535
0, 17, 17, 1, 518400, 0x29085c06
0, 18, 18, 1, 518400, 0x46ae6b7d
0, 19, 19, 1, 518400, 0x283100f4
0, 20, 20, 1, 518400, 0x2731b5ff
0, 21, 21, 1, 518400, 0x1132ea54
0, 22, 22, 1, 518400, 0x37cbe539
0, 23, 23, 1, 518400, 0x08ff75cf
0, 24, 24, 1, 518400, 0xafb6bc45
0, 25, 25, 1, 518400, 0x19d3873d
0, 26, 26, 1, 518400, 0xd494a8be
0, 27, 27, 1, 518400, 0x285f41ef
0, 28, 28, 1, 518400, 0xd4b1ffa1
0, 29, 29, 1, 518400, 0xc3876c3a
0, 30, 30, 1, 518400, 0xb73dbb62
0, 2, 2, 1, 518400, 0x1480849d
0, 3, 3, 1, 518400, 0x0e69ff59
0, 4, 4, 1, 518400, 0x00d6db06
0, 5, 5, 1, 518400, 0x1a5b6a69
0, 6, 6, 1, 518400, 0xc1a1232e
0, 7, 7, 1, 518400, 0x9a4e3c54
0, 8, 8, 1, 518400, 0x04122b44
0, 9, 9, 1, 518400, 0x0fcfeebc
0, 10, 10, 1, 518400, 0xc7882dc1
0, 11, 11, 1, 518400, 0x9d79df09
0, 12, 12, 1, 518400, 0xff6b716f
0, 13, 13, 1, 518400, 0x638a8746
0, 14, 14, 1, 518400, 0x07572efb
0, 15, 15, 1, 518400, 0x306f6cef
0, 16, 16, 1, 518400, 0xd7602518
0, 17, 17, 1, 518400, 0x49ab5bf5
0, 18, 18, 1, 518400, 0x3c736b6c
0, 19, 19, 1, 518400, 0x95ae00c9
0, 20, 20, 1, 518400, 0x7b9ab64e
0, 21, 21, 1, 518400, 0x5205ea68
0, 22, 22, 1, 518400, 0xb486e618
0, 23, 23, 1, 518400, 0xa3217616
0, 24, 24, 1, 518400, 0xc66bbc56
0, 25, 25, 1, 518400, 0xf024872a
0, 26, 26, 1, 518400, 0x97d2a8ba
0, 27, 27, 1, 518400, 0xa3a2418e
0, 28, 28, 1, 518400, 0x08460005
0, 29, 29, 1, 518400, 0x50fb6c94
0, 30, 30, 1, 518400, 0x5584bb40

Write Preview
Loading…
Cancel
Save