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codecparsers: h264: fix ref_pic_list_modification()

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The entries were not filled in linearly and the termination was not
recorded either. Now, the actual number of modifications is recorded
similarly to dec_ref_pic_marking(). i.e. an explicit counter instead
of storing the termination value in the array.

https://bugzilla.gnome.org/show_bug.cgi?id=668192
This commit is contained in:
Gwenole Beauchesne 2012-01-18 16:35:16 +01:00 committed by Tim-Philipp Müller
parent ee0fc47447
commit c92efe38e9
2 changed files with 11 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
gst-libs/gst/codecparsers/gsth264parser.c
View file

@ -747,22 +747,26 @@ slice_parse_ref_pic_list_modification_1 (GstH264SliceHdr * slice,
NalReader * nr, guint list)
{
GstH264RefPicListModification *entries;
guint8 *ref_pic_list_modification_flag;
guint8 *ref_pic_list_modification_flag, *n_ref_pic_list_modification;
guint32 modification_of_pic_nums_idc;
guint i = 0;
if (list == 0) {
entries = slice->ref_pic_list_modification_l0;
ref_pic_list_modification_flag = &slice->ref_pic_list_modification_flag_l0;
n_ref_pic_list_modification = &slice->n_ref_pic_list_modification_l0;
} else {
entries = slice->ref_pic_list_modification_l1;
ref_pic_list_modification_flag = &slice->ref_pic_list_modification_flag_l1;
n_ref_pic_list_modification = &slice->n_ref_pic_list_modification_l1;
}
READ_UINT8 (nr, *ref_pic_list_modification_flag, 1);
if (*ref_pic_list_modification_flag) {
do {
while (1) {
READ_UE (nr, modification_of_pic_nums_idc);
if (modification_of_pic_nums_idc == 3)
break;
if (modification_of_pic_nums_idc == 0 ||
modification_of_pic_nums_idc == 1) {
READ_UE_ALLOWED (nr, entries[i].value.abs_diff_pic_num_minus1, 0,
@ -770,9 +774,10 @@ slice_parse_ref_pic_list_modification_1 (GstH264SliceHdr * slice,
} else if (modification_of_pic_nums_idc == 2) {
READ_UE (nr, entries[i].value.long_term_pic_num);
}
} while (modification_of_pic_nums_idc != 3);
entries[i++].modification_of_pic_nums_idc = modification_of_pic_nums_idc;
}
}
*n_ref_pic_list_modification = i;
return TRUE;
error:

2
gst-libs/gst/codecparsers/gsth264parser.h
View file

@ -573,8 +573,10 @@ struct _GstH264SliceHdr
guint8 num_ref_idx_l1_active_minus1;
guint8 ref_pic_list_modification_flag_l0;
guint8 n_ref_pic_list_modification_l0;
GstH264RefPicListModification ref_pic_list_modification_l0[32];
guint8 ref_pic_list_modification_flag_l1;
guint8 n_ref_pic_list_modification_l1;
GstH264RefPicListModification ref_pic_list_modification_l1[32];
GstH264PredWeightTable pred_weight_table;