gstreamer/gst-libs/gst/codecs/gsth265decoder.h
Seungha Yang 82f1d5e8be codecs: Change output_picture() to mandatory implementation
GstVideoCodecFrame is expected to be consumed by subclass
per output_picture(). So the implementation cannot be optional.
2020-03-05 15:27:42 +00:00

131 lines
4.9 KiB
C

/* GStreamer
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_H265_DECODER_H__
#define __GST_H265_DECODER_H__
#include <gst/codecs/codecs-prelude.h>
#include <gst/video/video.h>
#include <gst/codecparsers/gsth265parser.h>
#include <gst/codecs/gsth265picture.h>
G_BEGIN_DECLS
#define GST_TYPE_H265_DECODER (gst_h265_decoder_get_type())
#define GST_H265_DECODER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_H265_DECODER,GstH265Decoder))
#define GST_H265_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_H265_DECODER,GstH265DecoderClass))
#define GST_H265_DECODER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_H265_DECODER,GstH265DecoderClass))
#define GST_IS_H265_DECODER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_H265_DECODER))
#define GST_IS_H265_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_H265_DECODER))
#define GST_H265_DECODER_CAST(obj) ((GstH265Decoder*)obj)
typedef struct _GstH265Decoder GstH265Decoder;
typedef struct _GstH265DecoderClass GstH265DecoderClass;
typedef struct _GstH265DecoderPrivate GstH265DecoderPrivate;
/**
* GstH265Decoder:
*
* The opaque #GstH265Decoder data structure.
*/
struct _GstH265Decoder
{
/*< private >*/
GstVideoDecoder parent;
/*< protected >*/
GstVideoCodecState * input_state;
GstH265Picture *RefPicSetStCurrBefore[16];
GstH265Picture *RefPicSetStCurrAfter[16];
GstH265Picture *RefPicSetStFoll[16];
GstH265Picture *RefPicSetLtCurr[16];
GstH265Picture *RefPicSetLtFoll[16];
guint NumPocStCurrBefore;
guint NumPocStCurrAfter;
guint NumPocStFoll;
guint NumPocLtCurr;
guint NumPocLtFoll;
guint NumPocTotalCurr;
/*< private >*/
GstH265DecoderPrivate *priv;
gpointer padding[GST_PADDING_LARGE];
};
/**
* GstH265DecoderClass:
* @new_sequence: Notifies subclass of SPS update
* @new_picture: Optional.
* Called whenever new #GstH265Picture is created.
* Subclass can set implementation specific user data
* on the #GstH265Picture via gst_h265_picture_set_user_data()
* @output_picture: Called with a #GstH265Picture which is required to be outputted.
* Subclass can retrieve parent #GstVideoCodecFrame by using
* gst_video_decoder_get_frame() with system_frame_number
* and the #GstVideoCodecFrame must be consumed by subclass via
* gst_video_decoder_{finish,drop,release}_frame().
* @start_picture: Optional.
* Called per one #GstH265Picture to notify subclass to prepare
* decoding process for the #GstH265Picture
* @decode_slice: Provides per slice data with parsed slice header and
* required raw bitstream for subclass to decode it
* @end_picture: Optional.
* Called per one #GstH265Picture to notify subclass to finish
* decoding process for the #GstH265Picture
*/
struct _GstH265DecoderClass
{
GstVideoDecoderClass parent_class;
gboolean (*new_sequence) (GstH265Decoder * decoder,
const GstH265SPS * sps);
gboolean (*new_picture) (GstH265Decoder * decoder,
GstH265Picture * picture);
GstFlowReturn (*output_picture) (GstH265Decoder * decoder,
GstH265Picture * picture);
gboolean (*start_picture) (GstH265Decoder * decoder,
GstH265Picture * picture,
GstH265Slice * slice,
GstH265Dpb * dpb);
gboolean (*decode_slice) (GstH265Decoder * decoder,
GstH265Picture * picture,
GstH265Slice * slice);
gboolean (*end_picture) (GstH265Decoder * decoder,
GstH265Picture * picture);
/*< private >*/
gpointer padding[GST_PADDING_LARGE];
};
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstH265Decoder, gst_object_unref)
GST_CODECS_API
GType gst_h265_decoder_get_type (void);
G_END_DECLS
#endif /* __GST_H265_DECODER_H__ */