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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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6a4c42c03f
Make all codecs consistent so that subclass can know additional DPB size requirement depending on render-delay configuration regardless of codec. Note that render-delay feature is not implemented for AV1 yet but it's planned. Also, consider new_sequence() is mandatory requirement, not optional Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2343>
152 lines
5.6 KiB
C
152 lines
5.6 KiB
C
/* GStreamer
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* Copyright (C) 2020 Seungha Yang <seungha@centricular.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_VP8_DECODER_H__
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#define __GST_VP8_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/gstvp8parser.h>
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#include <gst/codecs/gstvp8picture.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VP8_DECODER (gst_vp8_decoder_get_type())
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#define GST_VP8_DECODER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VP8_DECODER,GstVp8Decoder))
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#define GST_VP8_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VP8_DECODER,GstVp8DecoderClass))
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#define GST_VP8_DECODER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_VP8_DECODER,GstVp8DecoderClass))
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#define GST_IS_VP8_DECODER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VP8_DECODER))
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#define GST_IS_VP8_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VP8_DECODER))
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#define GST_VP8_DECODER_CAST(obj) ((GstVp8Decoder*)obj)
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typedef struct _GstVp8Decoder GstVp8Decoder;
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typedef struct _GstVp8DecoderClass GstVp8DecoderClass;
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typedef struct _GstVp8DecoderPrivate GstVp8DecoderPrivate;
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/**
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* GstVp8Decoder:
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*
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* The opaque #GstVp8Decoder data structure.
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*/
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struct _GstVp8Decoder
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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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/* reference frames */
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GstVp8Picture *last_picture;
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GstVp8Picture *golden_ref_picture;
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GstVp8Picture *alt_ref_picture;
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/*< private >*/
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GstVp8DecoderPrivate *priv;
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gpointer padding[GST_PADDING_LARGE];
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};
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/**
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* GstVp8DecoderClass:
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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 #GstVp8Picture is created.
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* Subclass can set implementation specific user data
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* on the #GstVp8Picture via gst_vp8_picture_set_user_data()
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* @start_picture: Optional.
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* Called per one #GstVp8Picture to notify subclass to prepare
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* decoding process for the #GstVp8Picture
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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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* @end_picture: Optional.
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* Called per one #GstVp8Picture to notify subclass to finish
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* decoding process for the #GstVp8Picture
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* @output_picture: Called with a #GstVp8Picture 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 _GstVp8DecoderClass
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{
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GstVideoDecoderClass parent_class;
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GstFlowReturn (*new_sequence) (GstVp8Decoder * decoder,
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const GstVp8FrameHdr * frame_hdr,
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gint max_dpb_size);
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/**
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* GstVp8DecoderClass:new_picture:
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* @decoder: a #GstVp8Decoder
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* @frame: (transfer none): a #GstVideoCodecFrame
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* @picture: (transfer none): a #GstVp8Picture
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*/
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GstFlowReturn (*new_picture) (GstVp8Decoder * decoder,
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GstVideoCodecFrame * frame,
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GstVp8Picture * picture);
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GstFlowReturn (*start_picture) (GstVp8Decoder * decoder,
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GstVp8Picture * picture);
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GstFlowReturn (*decode_picture) (GstVp8Decoder * decoder,
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GstVp8Picture * picture,
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GstVp8Parser * parser);
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GstFlowReturn (*end_picture) (GstVp8Decoder * decoder,
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GstVp8Picture * picture);
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/**
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* GstVp8DecoderClass:output_picture:
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* @decoder: a #GstVp8Decoder
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* @frame: (transfer full): a #GstVideoCodecFrame
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* @picture: (transfer full): a #GstVp8Picture
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*/
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GstFlowReturn (*output_picture) (GstVp8Decoder * decoder,
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GstVideoCodecFrame * frame,
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GstVp8Picture * picture);
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/**
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* GstVp8DecoderClass::get_preferred_output_delay:
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* @decoder: a #GstVp8Decoder
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* @is_live: whether upstream is live or not
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*
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* Optional. Called by baseclass to query whether delaying output is
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* preferred by subclass or not.
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*
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* Returns: the number of perferred delayed output frame
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*
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* Since: 1.20
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*/
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guint (*get_preferred_output_delay) (GstVp8Decoder * decoder,
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gboolean is_live);
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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(GstVp8Decoder, gst_object_unref)
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GST_CODECS_API
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GType gst_vp8_decoder_get_type (void);
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G_END_DECLS
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#endif /* __GST_VP8_DECODER_H__ */
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