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e921a07715
All subclasses are retrieving list to get target output frame, which can be done by baseclass. And pass the ownership of the GstH264Picture to subclass so that subclass can clear implementation dependent resources before finishing the frame. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1449>
144 lines
5.5 KiB
C
144 lines
5.5 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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/**
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* GstVideoDecoder:output_picture:
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*
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* @decoder: a #GstH264Decoder
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* @frame: (transfer full): a #GstVideoCodecFrame
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* @picture: (transfer full): a #GstH264Picture
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*/
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GstFlowReturn (*output_picture) (GstH264Decoder * decoder,
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GstVideoCodecFrame * frame,
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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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