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7a024a740f
The lifecycle of GstH264Picture is being managed by our DPB implementation. If it's still required, subclass can do that by itself in the new_picture() method. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1449>
136 lines
5.3 KiB
C
136 lines
5.3 KiB
C
/* GStreamer
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* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
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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 Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_H264_DECODER_H__
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#define __GST_H264_DECODER_H__
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#include <gst/codecs/codecs-prelude.h>
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#include <gst/video/video.h>
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#include <gst/codecparsers/gsth264parser.h>
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#include <gst/codecs/gsth264picture.h>
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G_BEGIN_DECLS
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#define GST_TYPE_H264_DECODER (gst_h264_decoder_get_type())
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#define GST_H264_DECODER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_H264_DECODER,GstH264Decoder))
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#define GST_H264_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_H264_DECODER,GstH264DecoderClass))
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#define GST_H264_DECODER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_H264_DECODER,GstH264DecoderClass))
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#define GST_IS_H264_DECODER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_H264_DECODER))
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#define GST_IS_H264_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_H264_DECODER))
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#define GST_H264_DECODER_CAST(obj) ((GstH264Decoder*)obj)
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typedef struct _GstH264Decoder GstH264Decoder;
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typedef struct _GstH264DecoderClass GstH264DecoderClass;
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typedef struct _GstH264DecoderPrivate GstH264DecoderPrivate;
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/**
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* GstH264Decoder:
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*
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* The opaque #GstH264Decoder data structure.
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*/
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struct _GstH264Decoder
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{
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/*< private >*/
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GstVideoDecoder parent;
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/*< protected >*/
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GstVideoCodecState * input_state;
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/*< private >*/
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GstH264DecoderPrivate *priv;
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gpointer padding[GST_PADDING_LARGE];
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};
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/**
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* GstH264DecoderClass:
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* @new_sequence: Notifies subclass of SPS update
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* @new_picture: Optional.
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* Called whenever new #GstH264Picture is created.
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* Subclass can set implementation specific user data
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* on the #GstH264Picture via gst_h264_picture_set_user_data()
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* @start_picture: Optional.
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* Called per one #GstH264Picture to notify subclass to prepare
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* decoding process for the #GstH264Picture
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* @decode_slice: Provides per slice data with parsed slice header and
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* required raw bitstream for subclass to decode it.
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* if gst_h264_decoder_set_process_ref_pic_lists() is called
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* with %TRUE by the subclass, @ref_pic_list0 and @ref_pic_list1
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* are non-%NULL.
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* @end_picture: Optional.
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* Called per one #GstH264Picture to notify subclass to finish
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* decoding process for the #GstH264Picture
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* @output_picture: Called with a #GstH264Picture which is required to be outputted.
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* Subclass can retrieve parent #GstVideoCodecFrame by using
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* gst_video_decoder_get_frame() with system_frame_number
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* and the #GstVideoCodecFrame must be consumed by subclass via
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* gst_video_decoder_{finish,drop,release}_frame().
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*/
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struct _GstH264DecoderClass
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{
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GstVideoDecoderClass parent_class;
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gboolean (*new_sequence) (GstH264Decoder * decoder,
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const GstH264SPS * sps,
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gint max_dpb_size);
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/**
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* GstVideoDecoder:new_picture:
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*
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* @decoder: a #GstH264Decoder
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* @frame: (transfer none): a #GstVideoCodecFrame
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* @picture: (transfer none): a #GstH264Picture
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*/
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gboolean (*new_picture) (GstH264Decoder * decoder,
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GstVideoCodecFrame * frame,
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GstH264Picture * picture);
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gboolean (*start_picture) (GstH264Decoder * decoder,
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GstH264Picture * picture,
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GstH264Slice * slice,
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GstH264Dpb * dpb);
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gboolean (*decode_slice) (GstH264Decoder * decoder,
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GstH264Picture * picture,
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GstH264Slice * slice,
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GArray * ref_pic_list0,
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GArray * ref_pic_list1);
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gboolean (*end_picture) (GstH264Decoder * decoder,
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GstH264Picture * picture);
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GstFlowReturn (*output_picture) (GstH264Decoder * decoder,
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GstH264Picture * picture);
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/*< private >*/
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gpointer padding[GST_PADDING_LARGE];
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};
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstH264Decoder, gst_object_unref)
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GST_CODECS_API
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GType gst_h264_decoder_get_type (void);
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GST_CODECS_API
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void gst_h264_decoder_set_process_ref_pic_lists (GstH264Decoder * self,
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gboolean process);
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G_END_DECLS
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#endif /* __GST_H264_DECODER_H__ */
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