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00d04784d3
This introduce a library which contains a set of base classes which handles the parsing and the state tracking for the purpose of decoding different CODECs. Currently H264, H265 and VP9 are supported. These bases classes are used to decode with low level decoding API like DXVA, NVDEC, VDPAU, VAAPI and V4L2 State Less decoders. The new library is named gstreamer-codecs-1.0 / libgstcodecs.
114 lines
4.3 KiB
C
114 lines
4.3 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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* @output_picture: Optional.
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* Called just before gst_video_decoder_have_frame().
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* Subclass should be prepared for handle_frame()
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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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* @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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*/
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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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gboolean (*new_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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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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gboolean (*end_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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GST_CODECS_API
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GType gst_h264_decoder_get_type (void);
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G_END_DECLS
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#endif /* __GST_H264_DECODER_H__ */
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