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2ede4011bf
In theory, input caps can be updated anytime at non-keyframe or sequence boundary, such as HDR10 metadata, framerate, aspect-ratio or so. Those information update might not trigger ::new_sequence() or subclass may ignore the changes. By this commit, input state change will be tracked by baseclass and subclass will be able to know the non-decoding-essential update by checking the codec specific picture struct on ::output_picture() Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3328>
196 lines
4.9 KiB
C
196 lines
4.9 KiB
C
/* GStreamer
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* Copyright (C) 2020 Intel Corporation
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* Author: He Junyan <junyan.he@intel.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_MPEG2_PICTURE_H__
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#define __GST_MPEG2_PICTURE_H__
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#include <gst/codecs/codecs-prelude.h>
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#include <gst/codecparsers/gstmpegvideoparser.h>
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#include <gst/video/video.h>
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G_BEGIN_DECLS
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/**
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* GST_TYPE_MPEG2_PICTURE:
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*
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* Since: 1.20
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*/
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#define GST_TYPE_MPEG2_PICTURE (gst_mpeg2_picture_get_type())
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/**
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* GST_IS_MPEG2_PICTURE:
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*
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* Since: 1.20
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*/
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#define GST_IS_MPEG2_PICTURE(obj) (GST_IS_MINI_OBJECT_TYPE(obj, GST_TYPE_MPEG2_PICTURE))
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/**
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* GST_MPEG2_PICTURE:
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*
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* Since: 1.20
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*/
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#define GST_MPEG2_PICTURE(obj) ((GstMpeg2Picture *)obj)
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typedef struct _GstMpeg2Slice GstMpeg2Slice;
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typedef struct _GstMpeg2Picture GstMpeg2Picture;
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/**
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* GstMpeg2Slice:
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*
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* Since: 1.20
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*/
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struct _GstMpeg2Slice
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{
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/*< private >*/
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GstMpegVideoQuantMatrixExt *quant_matrix; /* The parameter set */
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GstMpegVideoPictureHdr *pic_hdr;
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GstMpegVideoPictureExt *pic_ext;
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GstMpegVideoSliceHdr header;
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/* parsed video packet (doesn't take ownership of raw data) */
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GstMpegVideoPacket packet;
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/* offset of the start code for the slice */
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guint sc_offset;
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/* size, including the start code */
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guint size;
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};
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/**
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* GstMpeg2Picture:
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*
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* Since: 1.20
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*/
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struct _GstMpeg2Picture
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{
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/*< private >*/
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GstMiniObject parent;
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/* From GstVideoCodecFrame */
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guint32 system_frame_number;
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gboolean needed_for_output;
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/* For interlaced streams */
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GstMpeg2Picture *first_field;
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GstVideoBufferFlags buffer_flags;
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gint pic_order_cnt;
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gint tsn;
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GstMpegVideoPictureStructure structure;
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GstMpegVideoPictureType type;
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/* decoder input state if this picture is discont point */
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GstVideoCodecState *discont_state;
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gpointer user_data;
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GDestroyNotify notify;
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};
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/**
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* GST_MPEG2_PICTURE_IS_REF:
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* @picture: a #GstMpeg2Picture
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*
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* Check whether @picture's type is I or P
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*
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* Since: 1.20
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*/
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#define GST_MPEG2_PICTURE_IS_REF(picture) \
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(((GstMpeg2Picture *) picture)->type == GST_MPEG_VIDEO_PICTURE_TYPE_I || \
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((GstMpeg2Picture *) picture)->type == GST_MPEG_VIDEO_PICTURE_TYPE_P)
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GST_CODECS_API
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GType gst_mpeg2_picture_get_type (void);
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GST_CODECS_API
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GstMpeg2Picture * gst_mpeg2_picture_new (void);
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static inline GstMpeg2Picture *
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gst_mpeg2_picture_ref (GstMpeg2Picture * picture)
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{
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return (GstMpeg2Picture *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (picture));
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}
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static inline void
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gst_mpeg2_picture_unref (GstMpeg2Picture * picture)
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{
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gst_mini_object_unref (GST_MINI_OBJECT_CAST (picture));
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}
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static inline gboolean
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gst_mpeg2_picture_replace (GstMpeg2Picture ** old_picture,
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GstMpeg2Picture * new_picture)
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{
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return gst_mini_object_replace ((GstMiniObject **) old_picture,
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(GstMiniObject *) new_picture);
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}
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static inline void
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gst_clear_mpeg2_picture (GstMpeg2Picture ** picture)
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{
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if (picture && *picture) {
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gst_mpeg2_picture_unref (*picture);
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*picture = NULL;
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}
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}
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GST_CODECS_API
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void gst_mpeg2_picture_set_user_data (GstMpeg2Picture * picture,
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gpointer user_data,
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GDestroyNotify notify);
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GST_CODECS_API
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gpointer gst_mpeg2_picture_get_user_data (GstMpeg2Picture * picture);
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/**
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* GstMpeg2Dpb:
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*
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* Since: 1.20
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*/
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typedef struct _GstMpeg2Dpb GstMpeg2Dpb;
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GST_CODECS_API
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GstMpeg2Dpb * gst_mpeg2_dpb_new (void);
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GST_CODECS_API
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void gst_mpeg2_dpb_free (GstMpeg2Dpb * dpb);
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GST_CODECS_API
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void gst_mpeg2_dpb_clear (GstMpeg2Dpb * dpb);
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GST_CODECS_API
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void gst_mpeg2_dpb_add (GstMpeg2Dpb * dpb,
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GstMpeg2Picture * picture);
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GST_CODECS_API
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GstMpeg2Picture * gst_mpeg2_dpb_bump (GstMpeg2Dpb * dpb);
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GST_CODECS_API
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gboolean gst_mpeg2_dpb_need_bump (GstMpeg2Dpb * dpb);
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GST_CODECS_API
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void gst_mpeg2_dpb_get_neighbours (GstMpeg2Dpb * dpb,
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GstMpeg2Picture * picture,
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GstMpeg2Picture ** prev_picture_ptr,
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GstMpeg2Picture ** next_picture_ptr);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstMpeg2Picture, gst_mpeg2_picture_unref)
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G_END_DECLS
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#endif /* __GST_MPEG2_PICTURE_H__ */
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