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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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73daa0e0ad
The minimum latency answered by an element should be the maximum latency from the element's perspective. Also consider max_reorder_frames update as a sequence change Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4357>
334 lines
9.2 KiB
C
334 lines
9.2 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_PICTURE_H__
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#define __GST_H264_PICTURE_H__
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#include <gst/codecs/codecs-prelude.h>
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#include <gst/codecparsers/gsth264parser.h>
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#include <gst/video/video.h>
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G_BEGIN_DECLS
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#define GST_TYPE_H264_PICTURE (gst_h264_picture_get_type())
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#define GST_IS_H264_PICTURE(obj) (GST_IS_MINI_OBJECT_TYPE(obj, GST_TYPE_H264_PICTURE))
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#define GST_H264_PICTURE(obj) ((GstH264Picture *)obj)
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#define GST_H264_PICTURE_CAST(obj) (GST_H264_PICTURE(obj))
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typedef struct _GstH264Slice GstH264Slice;
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typedef struct _GstH264Picture GstH264Picture;
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/* As specified in A.3.1 h) and A.3.2 f) */
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#define GST_H264_DPB_MAX_SIZE 16
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/**
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* GST_H264_PICTURE_IS_REF:
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* @picture: a #GstH264Picture
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*
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* Check whether @picture is used for short-term or long-term reference
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*
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* Since: 1.20
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*/
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#define GST_H264_PICTURE_IS_REF(picture) \
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((picture)->ref != GST_H264_PICTURE_REF_NONE)
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/**
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* GST_H264_PICTURE_IS_SHORT_TERM_REF:
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* @picture: a #GstH264Picture
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*
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* Check whether @picture is used for short-term reference
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*
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* Since: 1.20
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*/
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#define GST_H264_PICTURE_IS_SHORT_TERM_REF(picture) \
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((picture)->ref == GST_H264_PICTURE_REF_SHORT_TERM)
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/**
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* GST_H264_PICTURE_IS_LONG_TERM_REF:
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* @picture: a #GstH264Picture
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*
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* Check whether @picture is used for long-term reference
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*
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* Since: 1.20
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*/
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#define GST_H264_PICTURE_IS_LONG_TERM_REF(picture) \
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((picture)->ref == GST_H264_PICTURE_REF_LONG_TERM)
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/**
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* GST_H264_PICTURE_IS_FRAME:
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* @picture: a #GstH264Picture
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*
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* Check whether @picture is a frame (not a field picture)
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*
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* Since: 1.20
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*/
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#define GST_H264_PICTURE_IS_FRAME(picture) \
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((picture)->field == GST_H264_PICTURE_FIELD_FRAME)
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struct _GstH264Slice
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{
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GstH264SliceHdr header;
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/* parsed nal unit (doesn't take ownership of raw data) */
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GstH264NalUnit nalu;
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};
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typedef enum
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{
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GST_H264_PICTURE_FIELD_FRAME,
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GST_H264_PICTURE_FIELD_TOP_FIELD,
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GST_H264_PICTURE_FIELD_BOTTOM_FIELD,
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} GstH264PictureField;
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/**
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* GstH264PictureReference:
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* @GST_H264_PICTURE_REF_NONE: Not used for reference picture
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* @GST_H264_PICTURE_REF_SHORT_TERM: Used for short-term reference picture
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* @GST_H264_PICTURE_REF_LONG_TERM: Used for long-term reference picture
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*
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* Since: 1.20
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*/
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typedef enum
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{
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GST_H264_PICTURE_REF_NONE = 0,
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GST_H264_PICTURE_REF_SHORT_TERM,
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GST_H264_PICTURE_REF_LONG_TERM,
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} GstH264PictureReference;
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struct _GstH264Picture
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{
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/*< private >*/
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GstMiniObject parent;
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GstH264SliceType type;
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/* From GstVideoCodecFrame */
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guint32 system_frame_number;
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guint8 pic_order_cnt_type; /* SPS */
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gint32 top_field_order_cnt;
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gint32 bottom_field_order_cnt;
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gint pic_order_cnt;
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gint pic_order_cnt_msb;
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gint pic_order_cnt_lsb;
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gint delta_pic_order_cnt_bottom;
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gint delta_pic_order_cnt0;
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gint delta_pic_order_cnt1;
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gint pic_num;
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gint long_term_pic_num;
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gint frame_num;
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gint frame_num_offset;
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gint frame_num_wrap;
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gint long_term_frame_idx;
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gint nal_ref_idc;
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gboolean idr;
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gint idr_pic_id;
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gboolean field_pic_flag;
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GstH264PictureReference ref;
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/* Whether a reference picture. */
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gboolean ref_pic;
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gboolean needed_for_output;
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gboolean mem_mgmt_5;
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gboolean nonexisting;
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GstH264PictureField field;
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GstH264DecRefPicMarking dec_ref_pic_marking;
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/* For interlaced decoding */
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gboolean second_field;
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GstH264Picture * other_field;
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GstVideoBufferFlags buffer_flags;
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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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* GstH264DpbBumpMode:
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* @GST_H264_DPB_BUMP_NORMAL_LATENCY: No latency requirement for DBP bumping.
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* @GST_H264_DPB_BUMP_LOW_LATENCY: Low-latency requirement for DBP bumping.
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* @GST_H264_DPB_BUMP_VERY_LOW_LATENCY: Very low-latency requirement for DBP bumping.
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*
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* Since: 1.20
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*/
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typedef enum
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{
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GST_H264_DPB_BUMP_NORMAL_LATENCY,
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GST_H264_DPB_BUMP_LOW_LATENCY,
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GST_H264_DPB_BUMP_VERY_LOW_LATENCY
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} GstH264DpbBumpMode;
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GST_CODECS_API
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GType gst_h264_picture_get_type (void);
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GST_CODECS_API
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GstH264Picture * gst_h264_picture_new (void);
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static inline GstH264Picture *
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gst_h264_picture_ref (GstH264Picture * picture)
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{
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return (GstH264Picture *) 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_h264_picture_unref (GstH264Picture * 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_h264_picture_replace (GstH264Picture ** old_picture,
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GstH264Picture * 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_h264_picture (GstH264Picture ** picture)
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{
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if (picture && *picture) {
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gst_h264_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_h264_picture_set_user_data (GstH264Picture * 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_h264_picture_get_user_data (GstH264Picture * picture);
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/*******************
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* GstH264Dpb *
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*******************/
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typedef struct _GstH264Dpb GstH264Dpb;
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GST_CODECS_API
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GstH264Dpb * gst_h264_dpb_new (void);
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GST_CODECS_API
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void gst_h264_dpb_set_max_num_frames (GstH264Dpb * dpb,
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gint max_num_frames);
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GST_CODECS_API
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gint gst_h264_dpb_get_max_num_frames (GstH264Dpb * dpb);
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GST_CODECS_API
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void gst_h264_dpb_set_interlaced (GstH264Dpb * dpb,
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gboolean interlaced);
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GST_CODECS_API
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void gst_h264_dpb_set_max_num_reorder_frames (GstH264Dpb * dpb,
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guint32 max_num_reorder_frames);
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GST_CODECS_API
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guint32 gst_h264_dpb_get_max_num_reorder_frames (GstH264Dpb * dpb);
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GST_CODECS_API
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gboolean gst_h264_dpb_get_interlaced (GstH264Dpb * dpb);
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GST_CODECS_API
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void gst_h264_dpb_free (GstH264Dpb * dpb);
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GST_CODECS_API
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void gst_h264_dpb_clear (GstH264Dpb * dpb);
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GST_CODECS_API
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void gst_h264_dpb_add (GstH264Dpb * dpb,
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GstH264Picture * picture);
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GST_CODECS_API
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void gst_h264_dpb_delete_unused (GstH264Dpb * dpb);
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GST_CODECS_API
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gint gst_h264_dpb_num_ref_frames (GstH264Dpb * dpb);
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GST_CODECS_API
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void gst_h264_dpb_mark_all_non_ref (GstH264Dpb * dpb);
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GST_CODECS_API
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GstH264Picture * gst_h264_dpb_get_short_ref_by_pic_num (GstH264Dpb * dpb,
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gint pic_num);
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GST_CODECS_API
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GstH264Picture * gst_h264_dpb_get_long_ref_by_long_term_pic_num (GstH264Dpb * dpb,
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gint long_term_pic_num);
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GST_CODECS_API
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GstH264Picture * gst_h264_dpb_get_lowest_frame_num_short_ref (GstH264Dpb * dpb);
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GST_CODECS_API
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void gst_h264_dpb_get_pictures_short_term_ref (GstH264Dpb * dpb,
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gboolean include_non_existing,
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gboolean include_second_field,
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GArray * out);
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GST_CODECS_API
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void gst_h264_dpb_get_pictures_long_term_ref (GstH264Dpb * dpb,
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gboolean include_second_field,
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GArray * out);
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GST_CODECS_API
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GArray * gst_h264_dpb_get_pictures_all (GstH264Dpb * dpb);
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GST_CODECS_API
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GstH264Picture * gst_h264_dpb_get_picture (GstH264Dpb * dpb,
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guint32 system_frame_number);
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GST_CODECS_API
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gint gst_h264_dpb_get_size (GstH264Dpb * dpb);
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GST_CODECS_API
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gboolean gst_h264_dpb_has_empty_frame_buffer (GstH264Dpb * dpb);
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GST_CODECS_API
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gboolean gst_h264_dpb_needs_bump (GstH264Dpb * dpb,
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GstH264Picture * to_insert,
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GstH264DpbBumpMode latency_mode);
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GST_CODECS_API
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GstH264Picture * gst_h264_dpb_bump (GstH264Dpb * dpb,
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gboolean drain);
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GST_CODECS_API
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void gst_h264_dpb_set_last_output (GstH264Dpb * dpb,
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GstH264Picture * picture);
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GST_CODECS_API
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gboolean gst_h264_dpb_perform_memory_management_control_operation (GstH264Dpb * dpb,
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GstH264RefPicMarking *ref_pic_marking,
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GstH264Picture * picture);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstH264Picture, gst_h264_picture_unref)
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G_END_DECLS
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#endif /* __GST_H264_PICTURE_H__ */
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