Compute dist_scale_factor_field only for MBAFF since that is the only
case in which it is used.
---
I believe this the correct fix for my original hack.
libavcodec/h264.h | 2 +-
libavcodec/h264_direct.c | 17 ++++++++++-------
2 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/libavcodec/h264.h b/libavcodec/h264.h
index 3c99030..f1a9921 100644
--- a/libavcodec/h264.h
+++ b/libavcodec/h264.h
@@ -363,7 +363,7 @@ typedef struct H264Context {
int direct_spatial_mv_pred;
int col_parity;
int col_fieldoff;
- int dist_scale_factor[16];
+ int dist_scale_factor[32];
int dist_scale_factor_field[2][32];
int map_col_to_list0[2][16 + 32];
int map_col_to_list0_field[2][2][16 + 32];
diff --git a/libavcodec/h264_direct.c b/libavcodec/h264_direct.c
index 6fdb637..bf44495 100644
--- a/libavcodec/h264_direct.c
+++ b/libavcodec/h264_direct.c
@@ -54,14 +54,17 @@ void ff_h264_direct_dist_scale_factor(H264Context * const
h){
const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure
== PICT_BOTTOM_FIELD ];
const int poc1 = h->ref_list[1][0].poc;
int i, field;
- for(field=0; field<2; field++){
- const int poc = h->s.current_picture_ptr->field_poc[field];
- const int poc1 = h->ref_list[1][0].field_poc[field];
- for(i=0; i < 2*h->ref_count[0]; i++)
- h->dist_scale_factor_field[field][i^field] = get_scale_factor(h,
poc, poc1, i+16);
- }
- for(i=0; i<h->ref_count[0]; i++){
+ if (FRAME_MBAFF)
+ for (field = 0; field < 2; field++){
+ const int poc = h->s.current_picture_ptr->field_poc[field];
+ const int poc1 = h->ref_list[1][0].field_poc[field];
+ for (i = 0; i < 2 * h->ref_count[0]; i++)
+ h->dist_scale_factor_field[field][i^field] =
+ get_scale_factor(h, poc, poc1, i+16);
+ }
+
+ for (i = 0; i < h->ref_count[0]; i++){
h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i);
}
}
--
1.7.12.4
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