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v4l2codecs: h264: Fix dpb entry flag FLAG_FIELD

Browse source 
The logic to guess back this value was broken. Use the value
now saved into the picture instead. This was tested using
LibreELEC patched 5.15 kernel, and fixed the interlaced decode
issues.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2009>
This commit is contained in:
Nicolas Dufresne 2021-12-21 10:55:58 -05:00 committed by GStreamer Marge Bot
parent 104ae1b2e6
commit d24dc74170
1 changed files with 3 additions and 6 deletions
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9
subprojects/gst-plugins-bad/sys/v4l2codecs/gstv4l2codech264dec.c
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@ -609,8 +609,10 @@ gst_v4l2_codec_h264_dec_fill_decoder_params (GstV4l2CodecH264Dec * self,
.pic_num = pic_num,
.flags = V4L2_H264_DPB_ENTRY_FLAG_VALID
| (GST_H264_PICTURE_IS_REF (ref_pic) ? V4L2_H264_DPB_ENTRY_FLAG_ACTIVE : 0)
| (GST_H264_PICTURE_IS_LONG_TERM_REF (ref_pic) ? V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM : 0),
| (GST_H264_PICTURE_IS_LONG_TERM_REF (ref_pic) ? V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM : 0)
| (ref_pic->field_pic_flag ? V4L2_H264_DPB_ENTRY_FLAG_FIELD : 0),
};
/* *INDENT-ON* */
switch (ref_pic->field) {
case GST_H264_PICTURE_FIELD_FRAME:
@ -626,8 +628,6 @@ gst_v4l2_codec_h264_dec_fill_decoder_params (GstV4l2CodecH264Dec * self,
entry->bottom_field_order_cnt =
ref_pic->other_field->bottom_field_order_cnt;
entry->fields |= V4L2_H264_BOTTOM_FIELD_REF;
} else {
entry->flags |= V4L2_H264_DPB_ENTRY_FLAG_FIELD;
}
break;
case GST_H264_PICTURE_FIELD_BOTTOM_FIELD:
@ -638,13 +638,10 @@ gst_v4l2_codec_h264_dec_fill_decoder_params (GstV4l2CodecH264Dec * self,
entry->top_field_order_cnt =
ref_pic->other_field->top_field_order_cnt;
entry->fields |= V4L2_H264_TOP_FIELD_REF;
} else {
entry->flags |= V4L2_H264_DPB_ENTRY_FLAG_FIELD;
}
break;
}
}
/* *INDENT-ON* */
g_array_unref (refs);
}