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212 lines
7.1 KiB
C
212 lines
7.1 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_VP9_DECODER_H__
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#define __GST_VP9_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/codecs/gstvp9picture.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VP9_DECODER (gst_vp9_decoder_get_type())
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#define GST_VP9_DECODER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VP9_DECODER,GstVp9Decoder))
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#define GST_VP9_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VP9_DECODER,GstVp9DecoderClass))
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#define GST_VP9_DECODER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_VP9_DECODER,GstVp9DecoderClass))
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#define GST_IS_VP9_DECODER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VP9_DECODER))
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#define GST_IS_VP9_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VP9_DECODER))
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#define GST_VP9_DECODER_CAST(obj) ((GstVP9Decoder*)obj)
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typedef struct _GstVp9Decoder GstVp9Decoder;
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typedef struct _GstVp9DecoderClass GstVp9DecoderClass;
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typedef struct _GstVp9DecoderPrivate GstVp9DecoderPrivate;
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/**
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* GstVp9Decoder:
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*
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* The opaque #GstVp9Decoder data structure.
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*/
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struct _GstVp9Decoder
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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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gboolean parse_compressed_headers;
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/*< private >*/
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GstVp9DecoderPrivate *priv;
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gpointer padding[GST_PADDING_LARGE];
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};
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/**
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* GstVp9DecoderClass:
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*/
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struct _GstVp9DecoderClass
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{
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GstVideoDecoderClass parent_class;
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/**
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* GstVp9DecoderClass::new_sequence:
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* @decoder: a #GstVp9Decoder
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* @frame_hdr: a #GstVp9FrameHeader
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* @max_dpb_size: the size of dpb including preferred output delay
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* by subclass reported via get_preferred_output_delay method.
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*
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* Notifies subclass of video sequence update such as resolution, bitdepth,
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* profile.
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*
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* Since: 1.18
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*/
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GstFlowReturn (*new_sequence) (GstVp9Decoder * decoder,
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const GstVp9FrameHeader *frame_hdr,
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gint max_dpb_size);
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/**
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* GstVp9DecoderClass::new_picture:
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* @decoder: a #GstVp9Decoder
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* @frame: (transfer none): a #GstVideoCodecFrame
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* @picture: (transfer none): a #GstVp9Picture
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*
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* Optional. Called whenever new #GstVp9Picture is created.
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* Subclass can set implementation specific user data on the #GstVp9Picture
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* via gst_vp9_picture_set_user_data()
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*
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* Since: 1.18
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*/
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GstFlowReturn (*new_picture) (GstVp9Decoder * decoder,
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GstVideoCodecFrame * frame,
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GstVp9Picture * picture);
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/**
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* GstVp9DecoderClass::duplicate_picture:
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* @decoder: a #GstVp9Decoder
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* @frame: (transfer none): a #GstVideoCodecFrame
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* @picture: (transfer none): a #GstVp9Picture to be duplicated
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*
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* Optional. Called to duplicate @picture when show_existing_frame flag is set
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* in the parsed vp9 frame header. Returned #GstVp9Picture from this method
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* should hold already decoded picture data corresponding to the @picture,
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* since the returned #GstVp9Picture from this method will be passed to
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* the output_picture method immediately without additional decoding process.
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*
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* If this method is not implemented by subclass, baseclass will drop
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* current #GstVideoCodecFrame without additional processing for the current
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* frame.
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*
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* Returns: (transfer full) (nullable): a #GstVp9Picture or %NULL if failed to duplicate
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* @picture.
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*
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* Since: 1.18
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*/
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GstVp9Picture * (*duplicate_picture) (GstVp9Decoder * decoder,
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GstVideoCodecFrame * frame,
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GstVp9Picture * picture);
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/**
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* GstVp9DecoderClass::start_picture:
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* @decoder: a #GstVp9Decoder
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* @picture: (transfer none): a #GstVp9Picture
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*
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* Optional. Called to notify subclass to prepare decoding process for
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* @picture
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*
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* Since: 1.18
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*/
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GstFlowReturn (*start_picture) (GstVp9Decoder * decoder,
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GstVp9Picture * picture);
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/**
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* GstVp9DecoderClass::decode_picture:
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* @decoder: a #GstVp9Decoder
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* @picture: (transfer none): a #GstVp9Picture to decoder
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* @dpb: (transfer none): a #GstVp9Dpb
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*
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* Called to notify decoding for subclass to decoder given @picture with
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* given @dpb
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*
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* Since: 1.18
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*/
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GstFlowReturn (*decode_picture) (GstVp9Decoder * decoder,
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GstVp9Picture * picture,
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GstVp9Dpb * dpb);
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/**
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* GstVp9DecoderClass::end_picture:
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* @decoder: a #GstVp9Decoder
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* @picture: (transfer none): a #GstVp9Picture
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*
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* Optional. Called per one #GstVp9Picture to notify subclass to finish
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* decoding process for the #GstVp9Picture
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*
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* Since: 1.18
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*/
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GstFlowReturn (*end_picture) (GstVp9Decoder * decoder,
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GstVp9Picture * picture);
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/**
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* GstVp9DecoderClass::output_picture:
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* @decoder: a #GstVp9Decoder
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* @frame: (transfer full): a #GstVideoCodecFrame
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* @picture: (transfer full): a #GstVp9Picture
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*
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* Called to notify @picture is ready to be outputted.
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*
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* Since: 1.18
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*/
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GstFlowReturn (*output_picture) (GstVp9Decoder * decoder,
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GstVideoCodecFrame * frame,
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GstVp9Picture * picture);
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/**
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* GstVp9DecoderClass::get_preferred_output_delay:
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* @decoder: a #GstVp9Decoder
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* @is_live: whether upstream is live or not
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*
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* Optional. Retrieve the preferred output delay from child classes.
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* controls how many frames to delay when calling
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* GstVp9DecoderClass::output_picture
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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) (GstVp9Decoder * 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(GstVp9Decoder, gst_object_unref)
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GST_CODECS_API
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GType gst_vp9_decoder_get_type (void);
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GST_CODECS_API
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void gst_vp9_decoder_set_non_keyframe_format_change_support (GstVp9Decoder * decoder,
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gboolean support);
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G_END_DECLS
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#endif /* __GST_VP9_DECODER_H__ */
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