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/*
* GStreamer
* Copyright (C) 2016 Vivia Nikolaidou <vivia@toolsonair.com>
*
* gsttimecodestamper.h
*
* 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_TIME_CODE_STAMPER_H__
#define __GST_TIME_CODE_STAMPER_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/audio/audio.h>
#if HAVE_LTC
#include <ltc.h>
#endif
#define GST_TYPE_TIME_CODE_STAMPER (gst_timecodestamper_get_type())
#define GST_TIME_CODE_STAMPER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TIME_CODE_STAMPER,GstTimeCodeStamper))
#define GST_TIME_CODE_STAMPER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_TIME_CODE_STAMPER,GstTimeCodeStamperClass))
#define GST_TIME_CODE_STAMPER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_TIME_CODE_STAMPER,GstTimeCodeStamperClass))
#define GST_IS_TIME_CODE_STAMPER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TIME_CODE_STAMPER))
#define GST_IS_TIME_CODE_STAMPER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_TIME_CODE_STAMPER))
#define GST_TYPE_TIME_CODE_STAMPER_SOURCE (gst_timecodestamper_source_get_type())
#define GST_TYPE_TIME_CODE_STAMPER_SET (gst_timecodestamper_set_get_type())
typedef struct _GstTimeCodeStamper GstTimeCodeStamper;
typedef struct _GstTimeCodeStamperClass GstTimeCodeStamperClass;
typedef enum GstTimeCodeStamperSource
{
GST_TIME_CODE_STAMPER_SOURCE_INTERNAL,
GST_TIME_CODE_STAMPER_SOURCE_ZERO,
GST_TIME_CODE_STAMPER_SOURCE_LAST_KNOWN,
GST_TIME_CODE_STAMPER_SOURCE_LAST_KNOWN_OR_ZERO,
GST_TIME_CODE_STAMPER_SOURCE_LTC,
GST_TIME_CODE_STAMPER_SOURCE_RTC,
} GstTimeCodeStamperSource;
typedef enum GstTimeCodeStamperSet {
GST_TIME_CODE_STAMPER_SET_NEVER,
GST_TIME_CODE_STAMPER_SET_KEEP,
GST_TIME_CODE_STAMPER_SET_ALWAYS,
} GstTimeCodeStamperSet;
/**
* GstTimeCodeStamper:
*
* Opaque data structure.
*/
struct _GstTimeCodeStamper
{
GstBaseTransform videofilter;
/* protected by object lock */
GstPad *ltcpad;
/* < private > */
/* Properties, protected by object lock */
GstTimeCodeStamperSource tc_source;
GstTimeCodeStamperSet tc_set;
gboolean tc_auto_resync;
GstClockTime tc_timeout;
gboolean drop_frame;
gboolean post_messages;
GstVideoTimeCode *set_internal_tc;
GDateTime *ltc_daily_jam;
gboolean ltc_auto_resync;
GstClockTime ltc_timeout;
GstClockTime ltc_extra_latency;
GstClockTime rtc_max_drift;
gboolean rtc_auto_resync;
gint timecode_offset;
/* Timecode tracking, protected by object lock */
GstVideoTimeCode *internal_tc;
GstVideoTimeCode *last_tc;
GstClockTime last_tc_running_time;
GstVideoTimeCode *rtc_tc;
/* Internal state, protected by object lock, changed only from video streaming thread */
gint fps_n;
gint fps_d;
GstVideoInterlaceMode interlace_mode;
/* Seek handling, protected by the object lock */
guint32 prev_seek_seqnum;
gboolean reset_internal_tc_from_seek;
gint64 seeked_frames;
/* LTC specific fields */
#if HAVE_LTC
GMutex mutex;
GCond ltc_cond_video;
GCond ltc_cond_audio;
/* Only accessed from audio streaming thread */
GstAudioInfo ainfo;
GstAudioStreamAlign *stream_align;
GstSegment ltc_segment;
/* Running time of the first audio buffer passed to the LTC decoder */
GstClockTime ltc_first_running_time;
/* Running time of the last sample we passed to the LTC decoder so far */
GstClockTime ltc_current_running_time;
/* Protected by object lock */
/* Queue of LTC timecodes we took out of the LTC decoder already
* together with their corresponding running times */
GQueue ltc_current_tcs;
/* LTC timecode we last synced to and potentially incremented manually since
* then */
GstVideoTimeCode *ltc_internal_tc;
GstClockTime ltc_internal_running_time;
/* Running time of last video frame we received */
GstClockTime video_current_running_time;
/* Protected by mutex above */
LTCDecoder *ltc_dec;
ltc_off_t ltc_total;
/* Protected by mutex above */
gboolean video_flushing;
gboolean video_eos;
/* Protected by mutex above */
gboolean ltc_flushing;
gboolean ltc_eos;
/* Latency information for LTC audio and video stream */
GstClockTime audio_latency, video_latency;
gboolean audio_live, video_live;
/* Latency we report to downstream */
GstClockTime latency;
GstClockID video_clock_id;
GstPadActivateModeFunction video_activatemode_default;
#endif
};
struct _GstTimeCodeStamperClass
{
GstBaseTransformClass parent_class;
};
GType gst_timecodestamper_get_type (void);
GST_ELEMENT_REGISTER_DECLARE (timecodestamper);
GType gst_timecodestamper_source_get_type (void);
GType gst_timecodestamper_set_get_type (void);
G_END_DECLS
#endif /* __GST_TIME_CODE_STAMPER_H__ */
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