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5975def8ab
In P-pictures, prediction shall be made from the two most recently decoded reference fields. However, when the first I-frame is a field, the next field of the current picture could be a P-picture but only a single field was decoded so far. In this case, create a dummy picture with POC = -1 that will be used as reference. Some VA drivers would error out if P-pictures don't have a forward reference picture. This is true in general but not in this very specific initial case.
191 lines
5.5 KiB
C
191 lines
5.5 KiB
C
/*
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* gstvaapidecoder_dpb.h - Decoded Picture Buffer
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*
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* Copyright (C) 2012 Intel Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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#ifndef GST_VAAPI_DECODER_DPB_H
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#define GST_VAAPI_DECODER_DPB_H
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#include <gst/vaapi/gstvaapidecoder_objects.h>
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G_BEGIN_DECLS
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typedef struct _GstVaapiDpb GstVaapiDpb;
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typedef struct _GstVaapiDpbClass GstVaapiDpbClass;
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typedef struct _GstVaapiDpbMpeg2 GstVaapiDpbMpeg2;
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typedef struct _GstVaapiDpbMpeg2Class GstVaapiDpbMpeg2Class;
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/* ------------------------------------------------------------------------- */
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/* --- Base Decoded Picture Buffer --- */
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/* ------------------------------------------------------------------------- */
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#define GST_VAAPI_TYPE_DPB \
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(gst_vaapi_dpb_get_type())
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#define GST_VAAPI_DPB_CAST(obj) \
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((GstVaapiDpb *)(obj))
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#define GST_VAAPI_DPB(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), \
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GST_VAAPI_TYPE_DPB, \
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GstVaapiDpb))
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#define GST_VAAPI_DPB_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), \
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GST_VAAPI_TYPE_DPB, \
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GstVaapiDpbClass))
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#define GST_VAAPI_IS_DPB(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_VAAPI_TYPE_DPB))
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#define GST_VAAPI_IS_DPB_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_DPB))
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#define GST_VAAPI_DPB_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS((obj), \
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GST_VAAPI_TYPE_DPB, \
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GstVaapiDpbClass))
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/**
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* GstVaapiDpb:
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*
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* A decoded picture buffer (DPB) object.
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*/
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struct _GstVaapiDpb {
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/*< private >*/
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GstMiniObject parent_instance;
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/*< protected >*/
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GstVaapiPicture **pictures;
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guint num_pictures;
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guint max_pictures;
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};
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/**
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* GstVaapiDpbClass:
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*
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* The #GstVaapiDpb base class.
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*/
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struct _GstVaapiDpbClass {
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/*< private >*/
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GstMiniObjectClass parent_class;
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/*< protected >*/
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void (*flush) (GstVaapiDpb *dpb);
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gboolean (*add) (GstVaapiDpb *dpb, GstVaapiPicture *picture);
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};
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GType
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gst_vaapi_dpb_get_type(void)
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attribute_hidden;
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void
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gst_vaapi_dpb_flush(GstVaapiDpb *dpb)
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attribute_hidden;
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gboolean
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gst_vaapi_dpb_add(GstVaapiDpb *dpb, GstVaapiPicture *picture)
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attribute_hidden;
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guint
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gst_vaapi_dpb_size(GstVaapiDpb *dpb)
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attribute_hidden;
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static inline gpointer
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gst_vaapi_dpb_ref(gpointer ptr)
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{
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return gst_mini_object_ref(GST_MINI_OBJECT(ptr));
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}
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static inline void
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gst_vaapi_dpb_unref(gpointer ptr)
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{
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gst_mini_object_unref(GST_MINI_OBJECT(ptr));
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}
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/* ------------------------------------------------------------------------- */
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/* --- MPEG-2 Decoded Picture Buffer --- */
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/* ------------------------------------------------------------------------- */
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#define GST_VAAPI_TYPE_DPB_MPEG2 \
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(gst_vaapi_dpb_mpeg2_get_type())
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#define GST_VAAPI_DPB_MPEG2_CAST(obj) \
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((GstVaapiDpbMpeg2 *)(obj))
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#define GST_VAAPI_DPB_MPEG2(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), \
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GST_VAAPI_TYPE_DPB_MPEG2, \
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GstVaapiDpbMpeg2))
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#define GST_VAAPI_DPB_MPEG2_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), \
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GST_VAAPI_TYPE_DPB_MPEG2, \
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GstVaapiDpbMpeg2Class))
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#define GST_VAAPI_IS_DPB_MPEG2(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_VAAPI_TYPE_DPB_MPEG2))
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#define GST_VAAPI_IS_DPB_MPEG2_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_DPB_MPEG2))
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#define GST_VAAPI_DPB_MPEG2_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS((obj), \
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GST_VAAPI_TYPE_DPB_MPEG2, \
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GstVaapiDpbMpeg2Class))
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/**
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* GstVaapiDpbMpeg2:
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*
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* A decoded picture buffer (DPB_MPEG2) object.
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*/
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struct _GstVaapiDpbMpeg2 {
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/*< private >*/
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GstVaapiDpb parent_instance;
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};
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/**
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* GstVaapiDpbMpeg2Class:
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*
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* The #GstVaapiDpbMpeg2 base class.
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*/
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struct _GstVaapiDpbMpeg2Class {
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/*< private >*/
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GstVaapiDpbClass parent_class;
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};
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GType
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gst_vaapi_dpb_mpeg2_get_type(void)
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attribute_hidden;
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GstVaapiDpb *
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gst_vaapi_dpb_mpeg2_new(void)
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attribute_hidden;
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void
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gst_vaapi_dpb_mpeg2_get_references(
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GstVaapiDpb *dpb,
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GstVaapiPicture *picture,
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GstVaapiPicture **prev_picture_ptr,
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GstVaapiPicture **next_picture_ptr
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) attribute_hidden;
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G_END_DECLS
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#endif /* GST_VAAPI_DECODER_DPB */
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