mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-21 07:46:38 +00:00
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>
210 lines
7.2 KiB
C
210 lines
7.2 KiB
C
/* 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))
|
|
|
|
typedef struct _GstMpeg2Decoder GstMpeg2Decoder;
|
|
typedef struct _GstMpeg2DecoderClass GstMpeg2DecoderClass;
|
|
typedef struct _GstMpeg2DecoderPrivate GstMpeg2DecoderPrivate;
|
|
|
|
/**
|
|
* GstMpeg2Decoder:
|
|
*
|
|
* The opaque #GstMpeg2Decoder data structure.
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
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
|
|
* @max_dpb_size: the size of dpb including preferred output delay
|
|
* by subclass reported via get_preferred_output_delay method.
|
|
*
|
|
* Notifies subclass of SPS update
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
GstFlowReturn (*new_sequence) (GstMpeg2Decoder * decoder,
|
|
const GstMpegVideoSequenceHdr * seq,
|
|
const GstMpegVideoSequenceExt * seq_ext,
|
|
const GstMpegVideoSequenceDisplayExt * seq_display_ext,
|
|
const GstMpegVideoSequenceScalableExt * seq_scalable_ext,
|
|
gint max_dpb_size);
|
|
|
|
/**
|
|
* 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()
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
GstFlowReturn (*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
|
|
*/
|
|
GstFlowReturn (*new_field_picture) (GstMpeg2Decoder * decoder,
|
|
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
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
GstFlowReturn (*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.
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
GstFlowReturn (*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
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
GstFlowReturn (*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.
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
GstFlowReturn (*output_picture) (GstMpeg2Decoder * decoder,
|
|
GstVideoCodecFrame * frame,
|
|
GstMpeg2Picture * picture);
|
|
|
|
/**
|
|
* GstMpeg2DecoderClass::get_preferred_output_delay:
|
|
* @decoder: a #GstMpeg2Decoder
|
|
* @is_live: whether upstream is live or not
|
|
*
|
|
* Optional. Called by baseclass to query whether delaying output is
|
|
* preferred by subclass or not.
|
|
*
|
|
* Returns: the number of perferred delayed output frames
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
guint (*get_preferred_output_delay) (GstMpeg2Decoder * decoder,
|
|
gboolean is_live);
|
|
|
|
/*< 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_MPEG2_DECODER_H__ */
|