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ab35d7394e
Can be attached as GstMeta into a video frame. https://bugzilla.gnome.org/show_bug.cgi?id=766419
151 lines
6 KiB
C
151 lines
6 KiB
C
/* GStreamer
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* Copyright (C) <2016> Vivia Nikolaidou <vivia@toolsonair.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_VIDEO_TIME_CODE_H__
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#define __GST_VIDEO_TIME_CODE_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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typedef struct _GstVideoTimeCodeConfig GstVideoTimeCodeConfig;
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typedef struct _GstVideoTimeCode GstVideoTimeCode;
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/**
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* GstVideoTimeCodeFlags:
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* @GST_VIDEO_TIME_CODE_FLAGS_NONE: No flags
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* @GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME: Whether we have drop frame rate
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* @GST_VIDEO_TIME_CODE_FLAGS_INTERLACED: Whether we have interlaced video
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*
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* Flags related to the time code information.
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* For drop frame, only 30000/1001 and 60000/1001 frame rates are supported.
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*
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* Since: 1.10
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*/
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typedef enum
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{
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GST_VIDEO_TIME_CODE_FLAGS_NONE = 0,
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GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME = (1<<0),
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GST_VIDEO_TIME_CODE_FLAGS_INTERLACED = (1<<1)
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/* Not supported yet:
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* GST_VIDEO_TIME_CODE_ALLOW_MORE_THAN_24H = (1<<2)
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* GST_VIDEO_TIME_CODE_ALLOW_NEGATIVE = (1<<3)
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*/
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} GstVideoTimeCodeFlags;
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/**
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* GstVideoTimeCodeConfig:
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* @fps_n: Numerator of the frame rate
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* @fps_d: Denominator of the frame rate
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* @flags: the corresponding #GstVideoTimeCodeFlags
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* @latest_daily_jam: The latest daily jam information, if present, or NULL
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*
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* Supported frame rates: 30000/1001, 60000/1001 (both with and without drop
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* frame), and integer frame rates e.g. 25/1, 30/1, 50/1, 60/1.
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*
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* The configuration of the time code.
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*
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* Since: 1.10
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*/
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struct _GstVideoTimeCodeConfig {
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guint fps_n;
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guint fps_d;
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GstVideoTimeCodeFlags flags;
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GDateTime *latest_daily_jam;
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};
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/**
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* GstVideoTimeCode:
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* @hours: the hours field of #GstVideoTimeCode
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* @minutes: the minutes field of #GstVideoTimeCode
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* @seconds: the seconds field of #GstVideoTimeCode
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* @frames: the frames field of #GstVideoTimeCode
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* @field_count: Interlaced video field count
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* @config: the corresponding #GstVideoTimeCodeConfig
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*
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* @field_count must be 0 for progressive video and 1 or 2 for interlaced.
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*
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* A representation of a SMPTE time code.
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*
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* @hours must be positive and less than 24. Will wrap around otherwise.
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* @minutes and @seconds must be positive and less than 60.
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* @frames must be less than or equal to @config.fps_n / @config.fps_d
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* These values are *NOT* automatically normalized.
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*
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* Since: 1.10
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*/
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struct _GstVideoTimeCode {
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GstVideoTimeCodeConfig config;
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guint hours;
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guint minutes;
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guint seconds;
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guint frames;
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guint field_count;
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};
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#define GST_TYPE_VIDEO_TIME_CODE (gst_video_time_code_get_type())
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GType gst_video_time_code_get_type (void);
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GstVideoTimeCode * gst_video_time_code_new (guint fps_n,
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guint fps_d,
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GDateTime * latest_daily_jam,
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GstVideoTimeCodeFlags flags,
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guint hours,
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guint minutes,
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guint seconds,
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guint frames,
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guint field_count);
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GstVideoTimeCode * gst_video_time_code_new_empty (void);
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void gst_video_time_code_free (GstVideoTimeCode * tc);
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GstVideoTimeCode * gst_video_time_code_copy (const GstVideoTimeCode * tc);
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void gst_video_time_code_init (GstVideoTimeCode * tc,
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guint fps_n,
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guint fps_d,
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GDateTime * latest_daily_jam,
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GstVideoTimeCodeFlags flags,
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guint hours,
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guint minutes,
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guint seconds,
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guint frames,
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guint field_count);
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void gst_video_time_code_clear (GstVideoTimeCode * tc);
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gboolean gst_video_time_code_is_valid (const GstVideoTimeCode * tc);
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gint gst_video_time_code_compare (const GstVideoTimeCode * tc1,
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const GstVideoTimeCode * tc2);
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void gst_video_time_code_increment_frame (GstVideoTimeCode * tc);
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void gst_video_time_code_add_frames (GstVideoTimeCode * tc,
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gint64 frames);
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gchar *gst_video_time_code_to_string (const GstVideoTimeCode * tc);
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GDateTime *gst_video_time_code_to_date_time (const GstVideoTimeCode * tc);
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guint64 gst_video_time_code_nsec_since_daily_jam (const GstVideoTimeCode * tc);
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guint64 gst_video_time_code_frames_since_daily_jam (const GstVideoTimeCode * tc);
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G_END_DECLS
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#endif /* __GST_VIDEO_TIME_CODE_H__ */
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