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5e3c7f2092
In order to know the chroma format, besides profile, subsampling_x and subsampling_y are needed (Spec 7.2.2 Color config semantics). These values are in GstVp9Parser but not in GstVp9Framehdr. Also, bit_depth is available in parser but not frame header. Evenmore, those values are copied to picture structure later. In case of VA-API, to configure the pipeline, it is require to know the chroma format and depth. It is possible to know chroma and depth through caps coming from vp9parser, but it requires string parsing. It would be less error prone to get these values through the parser structure at new_sequence() virtual method. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1700>
141 lines
5.4 KiB
C
141 lines
5.4 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/codecparsers/gstvp9parser.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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/*< 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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* @new_sequence: Notifies subclass of SPS update
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* @new_picture: Optional.
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* Called whenever new #GstVp9Picture is created.
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* Subclass can set implementation specific user data
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* on the #GstVp9Picture via gst_vp9_picture_set_user_data()
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* @duplicate_picture: Duplicate the #GstVp9Picture
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* @start_picture: Optional.
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* Called per one #GstVp9Picture to notify subclass to prepare
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* decoding process for the #GstVp9Picture
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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 #GstVp9Picture to notify subclass to finish
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* decoding process for the #GstVp9Picture
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* @output_picture: Called with a #GstVp9Picture 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 _GstVp9DecoderClass
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{
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GstVideoDecoderClass parent_class;
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gboolean (*new_sequence) (GstVp9Decoder * decoder,
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const GstVp9Parser * parser,
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const GstVp9FrameHdr * frame_hdr);
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/**
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* GstVp9Decoder:new_picture:
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* @decoder: a #GstVp9Decoder
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* @frame: (nullable): (transfer none): a #GstVideoCodecFrame
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* @picture: (transfer none): a #GstVp9Picture
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*
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* FIXME 1.20: vp9parse element can splitting super frames,
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* and then we can ensure non-null @frame
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*/
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gboolean (*new_picture) (GstVp9Decoder * decoder,
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GstVideoCodecFrame * frame,
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GstVp9Picture * picture);
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GstVp9Picture * (*duplicate_picture) (GstVp9Decoder * decoder,
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GstVp9Picture * picture);
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gboolean (*start_picture) (GstVp9Decoder * decoder,
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GstVp9Picture * picture);
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gboolean (*decode_picture) (GstVp9Decoder * decoder,
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GstVp9Picture * picture,
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GstVp9Dpb * dpb);
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gboolean (*end_picture) (GstVp9Decoder * decoder,
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GstVp9Picture * picture);
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/**
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* GstVp9Decoder:output_picture:
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* @decoder: a #GstVp9Decoder
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* @frame: (nullable): (transfer full): a #GstVideoCodecFrame
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* @picture: (transfer full): a #GstVp9Picture
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*
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* FIXME 1.20: vp9parse element can splitting super frames,
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* and then we can ensure non-null @frame
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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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/*< 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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G_END_DECLS
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#endif /* __GST_VP9_DECODER_H__ */
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