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libs: decoder: vp9: avoid reference rewriting

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The removed code set all the reference frames to the current frame it is a key
one, but later, all the reference frames were rewritten with the decoded picture
buffers or VA_INVALID_SURFACE if they were not available.

Basically, all this time the first reference frame assignment has been ignored,
and it's not described by the spec, and this patch removes that code.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/400>
This commit is contained in:
Víctor Manuel Jáquez Leal 2020-10-19 13:42:53 +02:00
parent 27427c00c0
commit 08b4aaa7fa
1 changed files with 2 additions and 5 deletions
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7
gst-libs/gst/vaapi/gstvaapidecoder_vp9.c
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@ -303,11 +303,7 @@ vaapi_fill_ref_frames (GstVaapiDecoderVp9 * decoder, GstVaapiPicture * picture,
GstVaapiDecoderVp9Private *const priv = &decoder->priv;
guint i;
if (frame_hdr->frame_type == GST_VP9_KEY_FRAME) {
for (i = 0; i < G_N_ELEMENTS (priv->ref_frames); i++)
pic_param->reference_frames[i] = picture->surface_id;
} else {
if (frame_hdr->frame_type != GST_VP9_KEY_FRAME) {
pic_param->pic_fields.bits.last_ref_frame =
frame_hdr->ref_frame_indices[GST_VP9_REF_FRAME_LAST - 1];
pic_param->pic_fields.bits.last_ref_frame_sign_bias =
@ -321,6 +317,7 @@ vaapi_fill_ref_frames (GstVaapiDecoderVp9 * decoder, GstVaapiPicture * picture,
pic_param->pic_fields.bits.alt_ref_frame_sign_bias =
frame_hdr->ref_frame_sign_bias[GST_VP9_REF_FRAME_ALTREF - 1];
}
for (i = 0; i < G_N_ELEMENTS (priv->ref_frames); i++) {
pic_param->reference_frames[i] = priv->ref_frames[i] ?
priv->ref_frames[i]->surface_id : VA_INVALID_SURFACE;