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/* GStreamer
* Copyright (C) 2020 Intel Corporation
* Author: He Junyan <junyan.he@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_MPEG2_DECODER_H__
#define __GST_MPEG2_DECODER_H__
#include <gst/codecs/codecs-prelude.h>
#include <gst/video/video.h>
#include <gst/codecparsers/gstmpegvideoparser.h>
#include <gst/codecs/gstmpeg2picture.h>
G_BEGIN_DECLS
#define GST_TYPE_MPEG2_DECODER (gst_mpeg2_decoder_get_type())
#define GST_MPEG2_DECODER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MPEG2_DECODER,GstMpeg2Decoder))
#define GST_MPEG2_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MPEG2_DECODER,GstMpeg2DecoderClass))
#define GST_MPEG2_DECODER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_MPEG2_DECODER,GstMpeg2DecoderClass))
#define GST_IS_MPEG2_DECODER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MPEG2_DECODER))
#define GST_IS_MPEG2_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MPEG2_DECODER))
#define GST_MPEG2_DECODER_CAST(obj) ((GstMpeg2Decoder*)obj)
typedef struct _GstMpeg2Decoder GstMpeg2Decoder;
typedef struct _GstMpeg2DecoderClass GstMpeg2DecoderClass;
typedef struct _GstMpeg2DecoderPrivate GstMpeg2DecoderPrivate;
/**
* GstMpeg2Decoder:
*
* The opaque #GstMpeg2Decoder data structure.
*/
struct _GstMpeg2Decoder
{
/*< private >*/
GstVideoDecoder parent;
/*< protected >*/
GstVideoCodecState * input_state;
/*< private >*/
GstMpeg2DecoderPrivate *priv;
gpointer padding[GST_PADDING_LARGE];
};
/**
* GstMpeg2DecoderClass:
*/
struct _GstMpeg2DecoderClass
{
GstVideoDecoderClass parent_class;
/**
* GstMpeg2DecoderClass::new_sequence:
* @decoder: a #GstMpeg2Decoder
* @seq: a #GstMpegVideoSequenceHdr
* @seq_ext: a #GstMpegVideoSequenceExt
*
* Notifies subclass of SPS update
*/
gboolean (*new_sequence) (GstMpeg2Decoder * decoder,
const GstMpegVideoSequenceHdr * seq,
const GstMpegVideoSequenceExt * seq_ext,
const GstMpegVideoSequenceDisplayExt * seq_display_ext,
const GstMpegVideoSequenceScalableExt * seq_scalable_ext);
/**
* GstMpeg2DecoderClass::new_picture:
* @decoder: a #GstMpeg2Decoder
* @frame: (transfer none): a #GstVideoCodecFrame
* @picture: (transfer none): a #GstMpeg2Picture
*
* Optional. Called whenever new #GstMpeg2Picture is created.
* Subclass can set implementation specific user data
* on the #GstMpeg2Picture via gst_mpeg2_picture_set_user_data()
*/
gboolean (*new_picture) (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame,
GstMpeg2Picture * picture);
/**
* GstMpeg2DecoderClass::new_field_picture:
* @decoder: a #GstMpeg2Decoder
* @first_field: (transfer none): the first field #GstMpeg2Picture already decoded
* @second_field: (transfer none): a #GstMpeg2Picture for the second field
*
* Called when a new field picture is created for interlaced field picture.
* Subclass can attach implementation specific user data on @second_field via
* gst_mpeg2_picture_set_user_data()
*
* Since: 1.20
*/
gboolean (*new_field_picture) (GstMpeg2Decoder * decoder,
const GstMpeg2Picture * first_field,
GstMpeg2Picture * second_field);
/**
* GstMpeg2DecoderClass::start_picture:
* @decoder: a #GstMpeg2Decoder
* @picture: (transfer none): a #GstMpeg2Picture
* @slice: (transfer none): a #GstMpeg2Slice
* @prev_picture: (transfer none): a #GstMpeg2Picture
* @next_picture: (transfer none): a #GstMpeg2Picture
*
* Optional. Called per one #GstMpeg2Picture to notify subclass to prepare
* decoding process for the #GstMpeg2Picture
*/
gboolean (*start_picture) (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture,
GstMpeg2Slice * slice,
GstMpeg2Picture * prev_picture,
GstMpeg2Picture * next_picture);
/**
* GstMpeg2DecoderClass::decode_slice:
* @decoder: a #GstMpeg2Decoder
* @picture: (transfer none): a #GstMpeg2Picture
* @slice: (transfer none): a #GstMpeg2Slice
*
* Provides per slice data with parsed slice header and required raw bitstream
* for subclass to decode it.
*/
gboolean (*decode_slice) (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture,
GstMpeg2Slice * slice);
/**
* GstMpeg2DecoderClass::end_picture:
* @decoder: a #GstMpeg2Decoder
* @picture: (transfer none): a #GstMpeg2Picture
*
* Optional. Called per one #GstMpeg2Picture to notify subclass to finish
* decoding process for the #GstMpeg2Picture
*/
gboolean (*end_picture) (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture);
/**
* GstMpeg2DecoderClass::output_picture:
* @decoder: a #GstMpeg2Decoder
* @frame: (transfer full): a #GstVideoCodecFrame
* @picture: (transfer full): a #GstMpeg2Picture
*
* Called with a #GstMpeg2Picture which is required to be outputted.
* The #GstVideoCodecFrame must be consumed by subclass.
*/
GstFlowReturn (*output_picture) (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame,
GstMpeg2Picture * picture);
/*< private >*/
gpointer padding[GST_PADDING_LARGE];
};
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstMpeg2Decoder, gst_object_unref)
GST_CODECS_API
GType gst_mpeg2_decoder_get_type (void);
G_END_DECLS
#endif /* __GST_VP8_DECODER_H__ */
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