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decoder: h264: fix assignment of LongTermFrameIdx.

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Complement fix committed as e95a42e.

The H.264 AVC standard has to say: if the field is part of a reference
frame or a complementary reference field pair, and the other field of
the same reference frame or complementary reference field pair is also
marked as "used for long-term reference", the reference frame or
complementary reference field pair is also marked as "used for long-term
reference" and assigned LongTermFrameIdx equal to long_term_frame_idx.

This fixes decoding of MR9_BT_B in strict mode.

https://bugs.freedesktop.org/show_bug.cgi?id=64624
https://bugzilla.gnome.org/show_bug.cgi?id=724518
This commit is contained in:
Gwenole Beauchesne 2014-05-12 19:23:04 +02:00
parent 85a60441fa
commit c12d80eb88
1 changed files with 14 additions and 1 deletions
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15
gst-libs/gst/vaapi/gstvaapidecoder_h264.c
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@ -2240,7 +2240,7 @@ exec_ref_pic_marking_adaptive_mmco_3(
)
{
GstVaapiDecoderH264Private * const priv = &decoder->priv;
GstVaapiPictureH264 *ref_picture;
GstVaapiPictureH264 *ref_picture, *other_field;
gint32 i, picNumX;
for (i = 0; i < priv->long_ref_count; i++) {
@ -2265,6 +2265,12 @@ exec_ref_pic_marking_adaptive_mmco_3(
gst_vaapi_picture_h264_set_reference(ref_picture,
GST_VAAPI_PICTURE_FLAG_LONG_TERM_REFERENCE,
GST_VAAPI_PICTURE_IS_COMPLETE(picture));
/* Assign LongTermFrameIdx to the other field if it was also
marked as "used for long-term reference */
other_field = ref_picture->other_field;
if (other_field && GST_VAAPI_PICTURE_IS_LONG_TERM_REFERENCE(other_field))
other_field->long_term_frame_idx = ref_pic_marking->long_term_frame_idx;
}
/* 8.2.5.4.4. Mark pictures with LongTermFramIdx > max_long_term_frame_idx
@ -2326,6 +2332,7 @@ exec_ref_pic_marking_adaptive_mmco_6(
)
{
GstVaapiDecoderH264Private * const priv = &decoder->priv;
GstVaapiPictureH264 *other_field;
guint i;
for (i = 0; i < priv->long_ref_count; i++) {
@ -2341,6 +2348,12 @@ exec_ref_pic_marking_adaptive_mmco_6(
gst_vaapi_picture_h264_set_reference(picture,
GST_VAAPI_PICTURE_FLAG_LONG_TERM_REFERENCE,
GST_VAAPI_PICTURE_IS_COMPLETE(picture));
/* Assign LongTermFrameIdx to the other field if it was also
marked as "used for long-term reference */
other_field = (GstVaapiPictureH264 *)picture->base.parent_picture;
if (other_field && GST_VAAPI_PICTURE_IS_LONG_TERM_REFERENCE(other_field))
other_field->long_term_frame_idx = ref_pic_marking->long_term_frame_idx;
}
/* 8.2.5.4. Adaptive memory control decoded reference picture marking process */