/* * GStreamer * Copyright (C) 2016 Vivia Nikolaidou * Copyright (C) 2019 Sebastian Dröge * * gsttimecodestamper.c * * 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. */ /** * SECTION:element-timecodestamper * @title: timecodestamper * @short_description: Attach a timecode into incoming video frames * * This element attaches a timecode into every incoming video frame. It starts * counting from the stream time of each segment start, which it converts into * a timecode. * * ## Example launch line * |[ * gst-launch-1.0 videotestsrc ! timecodestamper ! autovideosink * ]| * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gsttimecodestamper.h" #include #include #include #include #include #define ABSDIFF(a,b) (((a) > (b)) ? ((a) - (b)) : ((b) - (a))) GST_DEBUG_CATEGORY_STATIC (timecodestamper_debug); #define GST_CAT_DEFAULT timecodestamper_debug /* GstTimeCodeStamper properties */ enum { PROP_0, PROP_SOURCE, PROP_SET, PROP_DROP_FRAME, PROP_POST_MESSAGES, PROP_SET_INTERNAL_TIMECODE, PROP_LTC_DAILY_JAM, PROP_LTC_AUTO_RESYNC, PROP_RTC_MAX_DRIFT, PROP_RTC_AUTO_RESYNC, PROP_TIMECODE_OFFSET }; #define DEFAULT_SOURCE GST_TIME_CODE_STAMPER_SOURCE_INTERNAL #define DEFAULT_SET GST_TIME_CODE_STAMPER_SET_KEEP #define DEFAULT_DROP_FRAME FALSE #define DEFAULT_POST_MESSAGES FALSE #define DEFAULT_SET_INTERNAL_TIMECODE NULL #define DEFAULT_LTC_DAILY_JAM NULL #define DEFAULT_LTC_AUTO_RESYNC TRUE #define DEFAULT_RTC_MAX_DRIFT 250000000 #define DEFAULT_RTC_AUTO_RESYNC TRUE #define DEFAULT_TIMECODE_OFFSET 0 #define DEFAULT_LTC_QUEUE 100 static GstStaticPadTemplate gst_timecodestamper_src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-raw, framerate=[1/2147483647, 2147483647/1]") ); static GstStaticPadTemplate gst_timecodestamper_sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-raw, framerate=[1/2147483647, 2147483647/1]") ); static GstStaticPadTemplate gst_timecodestamper_ltc_template = GST_STATIC_PAD_TEMPLATE ("ltc_sink", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS ("audio/x-raw,format=U8,rate=[1,max],channels=1") ); static void gst_timecodestamper_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_timecodestamper_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void gst_timecodestamper_dispose (GObject * object); static gboolean gst_timecodestamper_sink_event (GstBaseTransform * trans, GstEvent * event); static GstFlowReturn gst_timecodestamper_transform_ip (GstBaseTransform * vfilter, GstBuffer * buffer); static gboolean gst_timecodestamper_stop (GstBaseTransform * trans); static gboolean gst_timecodestamper_start (GstBaseTransform * trans); static GstPad *gst_timecodestamper_request_new_pad (GstElement * element, GstPadTemplate * temp, const gchar * unused, const GstCaps * caps); static void gst_timecodestamper_release_pad (GstElement * element, GstPad * pad); #if HAVE_LTC static GstFlowReturn gst_timecodestamper_ltcpad_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer); static gboolean gst_timecodestamper_ltcpad_event (GstPad * pad, GstObject * parent, GstEvent * event); static gboolean gst_timecodestamper_ltcpad_query (GstPad * pad, GstObject * parent, GstQuery * query); static gboolean gst_timecodestamper_ltcpad_activatemode (GstPad * pad, GstObject * parent, GstPadMode mode, gboolean active); static gboolean gst_timecodestamper_videopad_activatemode (GstPad * pad, GstObject * parent, GstPadMode mode, gboolean active); static GstIterator *gst_timecodestamper_src_iterate_internal_link (GstPad * pad, GstObject * parent); #endif static void gst_timecodestamper_update_drop_frame (GstTimeCodeStamper * timecodestamper); G_DEFINE_TYPE (GstTimeCodeStamper, gst_timecodestamper, GST_TYPE_BASE_TRANSFORM); GType gst_timecodestamper_source_get_type (void) { static GType type = 0; static const GEnumValue values[] = { {GST_TIME_CODE_STAMPER_SOURCE_INTERNAL, "Use internal timecode counter, starting at zero or value set by property", "internal"}, {GST_TIME_CODE_STAMPER_SOURCE_ZERO, "Always use zero", "zero"}, {GST_TIME_CODE_STAMPER_SOURCE_LAST_KNOWN, "Count up from the last known upstream timecode or internal if unknown", "last-known"}, {GST_TIME_CODE_STAMPER_SOURCE_LAST_KNOWN_OR_ZERO, "Count up from the last known upstream timecode or zero if unknown", "last-known-or-zero"}, {GST_TIME_CODE_STAMPER_SOURCE_LTC, "Linear timecode from an audio device", "ltc"}, {GST_TIME_CODE_STAMPER_SOURCE_RTC, "Timecode from real time clock", "rtc"}, {0, NULL, NULL}, }; if (!type) { type = g_enum_register_static ("GstTimeCodeStamperSource", values); } return type; } GType gst_timecodestamper_set_get_type (void) { static GType type = 0; static const GEnumValue values[] = { {GST_TIME_CODE_STAMPER_SET_NEVER, "Never set timecodes", "never"}, {GST_TIME_CODE_STAMPER_SET_KEEP, "Keep upstream timecodes and only set if no upstream timecode", "keep"}, {GST_TIME_CODE_STAMPER_SET_ALWAYS, "Always set timecode and remove upstream timecode", "always"}, {0, NULL, NULL}, }; if (!type) { type = g_enum_register_static ("GstTimeCodeStamperSet", values); } return type; } static void gst_timecodestamper_class_init (GstTimeCodeStamperClass * klass) { GObjectClass *gobject_class = (GObjectClass *) klass; GstElementClass *element_class = (GstElementClass *) klass; GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass; GST_DEBUG_CATEGORY_INIT (timecodestamper_debug, "timecodestamper", 0, "timecodestamper"); gst_element_class_set_static_metadata (element_class, "Timecode stamper", "Filter/Video", "Attaches a timecode meta into each video frame", "Vivia Nikolaidou "); gobject_class->set_property = gst_timecodestamper_set_property; gobject_class->get_property = gst_timecodestamper_get_property; gobject_class->dispose = gst_timecodestamper_dispose; g_object_class_install_property (gobject_class, PROP_SOURCE, g_param_spec_enum ("source", "Timecode Source", "Choose from what source the timecode should be taken", GST_TYPE_TIME_CODE_STAMPER_SOURCE, DEFAULT_SOURCE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_SET, g_param_spec_enum ("set", "Timecode Set", "Choose whether timecodes should be overridden or not", GST_TYPE_TIME_CODE_STAMPER_SET, DEFAULT_SET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_DROP_FRAME, g_param_spec_boolean ("drop-frame", "Drop Frame", "Use drop-frame timecodes for 29.97 and 59.94 FPS", DEFAULT_DROP_FRAME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_POST_MESSAGES, g_param_spec_boolean ("post-messages", "Post element message", "Post element message containing the current timecode", DEFAULT_POST_MESSAGES, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_SET_INTERNAL_TIMECODE, g_param_spec_boxed ("set-internal-timecode", "Set Internal Timecode", "If set, take this timecode as the internal timecode for the first " "frame and increment from it. Only the values itself and daily jam are taken, " "flags and frame rate are always determined by timecodestamper " "itself. If unset, the internal timecode will start at 0 with the daily jam " "being the current real-time clock time", GST_TYPE_VIDEO_TIME_CODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_LTC_DAILY_JAM, g_param_spec_boxed ("ltc-daily-jam", "LTC Daily jam", "The daily jam of the LTC timecode", G_TYPE_DATE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_LTC_AUTO_RESYNC, g_param_spec_boolean ("ltc-auto-resync", "LTC Auto Resync", "If true and LTC timecode is used, it will be automatically " "resynced if it drifts, otherwise it will only be initialised once", DEFAULT_LTC_AUTO_RESYNC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_RTC_MAX_DRIFT, g_param_spec_uint64 ("rtc-max-drift", "RTC Maximum Offset", "Maximum number of nanoseconds the RTC clock is allowed to drift from " "the video before it is resynced", 0, G_MAXUINT64, DEFAULT_RTC_MAX_DRIFT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_RTC_AUTO_RESYNC, g_param_spec_boolean ("rtc-auto-resync", "RTC Auto Resync", "If true and RTC timecode is used, it will be automatically " "resynced if it drifts, otherwise it will only be initialised once", DEFAULT_RTC_AUTO_RESYNC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_TIMECODE_OFFSET, g_param_spec_int ("timecode-offset", "Timecode Offset", "Add this offset in frames to internal, LTC or RTC timecode, " "useful if there is an offset between the timecode source and video", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_timecodestamper_sink_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_timecodestamper_src_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_timecodestamper_ltc_template)); element_class->request_new_pad = GST_DEBUG_FUNCPTR (gst_timecodestamper_request_new_pad); element_class->release_pad = GST_DEBUG_FUNCPTR (gst_timecodestamper_release_pad); trans_class->sink_event = GST_DEBUG_FUNCPTR (gst_timecodestamper_sink_event); trans_class->stop = GST_DEBUG_FUNCPTR (gst_timecodestamper_stop); trans_class->start = GST_DEBUG_FUNCPTR (gst_timecodestamper_start); trans_class->transform_ip = GST_DEBUG_FUNCPTR (gst_timecodestamper_transform_ip); } static void gst_timecodestamper_init (GstTimeCodeStamper * timecodestamper) { timecodestamper->ltcpad = NULL; timecodestamper->tc_source = GST_TIME_CODE_STAMPER_SOURCE_INTERNAL; timecodestamper->tc_set = GST_TIME_CODE_STAMPER_SET_KEEP; timecodestamper->drop_frame = DEFAULT_DROP_FRAME; timecodestamper->post_messages = DEFAULT_POST_MESSAGES; timecodestamper->set_internal_tc = NULL; timecodestamper->ltc_daily_jam = DEFAULT_LTC_DAILY_JAM; timecodestamper->ltc_auto_resync = DEFAULT_LTC_AUTO_RESYNC; timecodestamper->rtc_max_drift = DEFAULT_RTC_MAX_DRIFT; timecodestamper->rtc_auto_resync = DEFAULT_RTC_AUTO_RESYNC; timecodestamper->timecode_offset = 0; timecodestamper->internal_tc = NULL; timecodestamper->last_tc = NULL; timecodestamper->rtc_tc = NULL; #if HAVE_LTC g_mutex_init (&timecodestamper->mutex); g_cond_init (&timecodestamper->ltc_cond_video); g_cond_init (&timecodestamper->ltc_cond_audio); gst_segment_init (&timecodestamper->ltc_segment, GST_FORMAT_UNDEFINED); timecodestamper->ltc_first_running_time = GST_CLOCK_TIME_NONE; timecodestamper->ltc_current_running_time = GST_CLOCK_TIME_NONE; timecodestamper->ltc_current_tc = NULL; timecodestamper->ltc_current_tc_running_time = GST_CLOCK_TIME_NONE; timecodestamper->ltc_internal_tc = NULL; timecodestamper->ltc_dec = NULL; timecodestamper->ltc_total = 0; timecodestamper->ltc_eos = TRUE; timecodestamper->ltc_flushing = TRUE; timecodestamper->video_activatemode_default = GST_PAD_ACTIVATEMODEFUNC (GST_BASE_TRANSFORM_SINK_PAD (timecodestamper)); GST_PAD_ACTIVATEMODEFUNC (GST_BASE_TRANSFORM_SINK_PAD (timecodestamper)) = gst_timecodestamper_videopad_activatemode; gst_pad_set_iterate_internal_links_function (GST_BASE_TRANSFORM_SRC_PAD (timecodestamper), gst_timecodestamper_src_iterate_internal_link); #endif } static void gst_timecodestamper_dispose (GObject * object) { GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (object); if (timecodestamper->ltc_daily_jam) { g_date_time_unref (timecodestamper->ltc_daily_jam); timecodestamper->ltc_daily_jam = NULL; } if (timecodestamper->internal_tc != NULL) { gst_video_time_code_free (timecodestamper->internal_tc); timecodestamper->internal_tc = NULL; } if (timecodestamper->set_internal_tc != NULL) { gst_video_time_code_free (timecodestamper->set_internal_tc); timecodestamper->set_internal_tc = NULL; } if (timecodestamper->last_tc != NULL) { gst_video_time_code_free (timecodestamper->last_tc); timecodestamper->last_tc = NULL; } if (timecodestamper->rtc_tc != NULL) { gst_video_time_code_free (timecodestamper->rtc_tc); timecodestamper->rtc_tc = NULL; } #if HAVE_LTC g_cond_clear (&timecodestamper->ltc_cond_video); g_cond_clear (&timecodestamper->ltc_cond_audio); g_mutex_clear (&timecodestamper->mutex); if (timecodestamper->ltc_current_tc != NULL) { gst_video_time_code_free (timecodestamper->ltc_current_tc); timecodestamper->ltc_current_tc = NULL; } if (timecodestamper->ltc_internal_tc != NULL) { gst_video_time_code_free (timecodestamper->ltc_internal_tc); timecodestamper->ltc_internal_tc = NULL; } if (timecodestamper->ltc_dec) { ltc_decoder_free (timecodestamper->ltc_dec); timecodestamper->ltc_dec = NULL; } if (timecodestamper->stream_align) { gst_audio_stream_align_free (timecodestamper->stream_align); timecodestamper->stream_align = NULL; } #endif G_OBJECT_CLASS (gst_timecodestamper_parent_class)->dispose (object); } static void gst_timecodestamper_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (object); GST_OBJECT_LOCK (timecodestamper); switch (prop_id) { case PROP_SOURCE: timecodestamper->tc_source = (GstTimeCodeStamperSource) g_value_get_enum (value); break; case PROP_SET: timecodestamper->tc_set = (GstTimeCodeStamperSet) g_value_get_enum (value); break; case PROP_DROP_FRAME: timecodestamper->drop_frame = g_value_get_boolean (value); gst_timecodestamper_update_drop_frame (timecodestamper); break; case PROP_LTC_DAILY_JAM: if (timecodestamper->ltc_daily_jam) g_date_time_unref (timecodestamper->ltc_daily_jam); timecodestamper->ltc_daily_jam = g_value_dup_boxed (value); #if HAVE_LTC if (timecodestamper->ltc_current_tc) { if (timecodestamper->ltc_current_tc->config.latest_daily_jam) { g_date_time_unref (timecodestamper->ltc_current_tc->config. latest_daily_jam); } timecodestamper->ltc_current_tc->config.latest_daily_jam = g_date_time_ref (timecodestamper->ltc_daily_jam); } if (timecodestamper->ltc_internal_tc) { if (timecodestamper->ltc_internal_tc->config.latest_daily_jam) { g_date_time_unref (timecodestamper->ltc_internal_tc->config. latest_daily_jam); } timecodestamper->ltc_internal_tc->config.latest_daily_jam = g_date_time_ref (timecodestamper->ltc_daily_jam); } #endif break; case PROP_POST_MESSAGES: timecodestamper->post_messages = g_value_get_boolean (value); break; case PROP_SET_INTERNAL_TIMECODE:{ if (timecodestamper->set_internal_tc) gst_video_time_code_free (timecodestamper->set_internal_tc); timecodestamper->set_internal_tc = g_value_dup_boxed (value); /* Reset the internal timecode on the next opportunity if a new * timecode was set here. If none was set we just continue counting * from the previous one */ if (timecodestamper->set_internal_tc && timecodestamper->internal_tc) { gst_video_time_code_free (timecodestamper->internal_tc); timecodestamper->internal_tc = NULL; } break; } case PROP_LTC_AUTO_RESYNC: timecodestamper->ltc_auto_resync = g_value_get_boolean (value); break; case PROP_RTC_MAX_DRIFT: timecodestamper->rtc_max_drift = g_value_get_uint64 (value); break; case PROP_RTC_AUTO_RESYNC: timecodestamper->rtc_auto_resync = g_value_get_boolean (value); break; case PROP_TIMECODE_OFFSET: timecodestamper->timecode_offset = g_value_get_int (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } GST_OBJECT_UNLOCK (timecodestamper); } static void gst_timecodestamper_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (object); GST_OBJECT_LOCK (timecodestamper); switch (prop_id) { case PROP_SOURCE: g_value_set_enum (value, timecodestamper->tc_source); break; case PROP_SET: g_value_set_enum (value, timecodestamper->tc_set); break; case PROP_DROP_FRAME: g_value_set_boolean (value, timecodestamper->drop_frame); break; case PROP_LTC_DAILY_JAM: g_value_set_boxed (value, timecodestamper->ltc_daily_jam); break; case PROP_POST_MESSAGES: g_value_set_boolean (value, timecodestamper->post_messages); break; case PROP_SET_INTERNAL_TIMECODE: g_value_set_boxed (value, timecodestamper->set_internal_tc); break; case PROP_LTC_AUTO_RESYNC: g_value_set_boolean (value, timecodestamper->ltc_auto_resync); break; case PROP_RTC_MAX_DRIFT: g_value_set_uint64 (value, timecodestamper->rtc_max_drift); break; case PROP_RTC_AUTO_RESYNC: g_value_set_boolean (value, timecodestamper->rtc_auto_resync); break; case PROP_TIMECODE_OFFSET: g_value_set_int (value, timecodestamper->timecode_offset); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } GST_OBJECT_UNLOCK (timecodestamper); } static gboolean gst_timecodestamper_stop (GstBaseTransform * trans) { GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (trans); #if HAVE_LTC g_mutex_lock (&timecodestamper->mutex); timecodestamper->video_flushing = TRUE; timecodestamper->ltc_flushing = TRUE; g_cond_signal (&timecodestamper->ltc_cond_video); g_cond_signal (&timecodestamper->ltc_cond_audio); g_mutex_unlock (&timecodestamper->mutex); #endif gst_video_info_init (&timecodestamper->vinfo); if (timecodestamper->internal_tc != NULL) { gst_video_time_code_free (timecodestamper->internal_tc); timecodestamper->internal_tc = NULL; } if (timecodestamper->rtc_tc != NULL) { gst_video_time_code_free (timecodestamper->rtc_tc); timecodestamper->rtc_tc = NULL; } if (timecodestamper->last_tc != NULL) { gst_video_time_code_free (timecodestamper->last_tc); timecodestamper->last_tc = NULL; } #if HAVE_LTC g_mutex_lock (&timecodestamper->mutex); gst_audio_info_init (&timecodestamper->ainfo); gst_segment_init (&timecodestamper->ltc_segment, GST_FORMAT_UNDEFINED); timecodestamper->ltc_first_running_time = GST_CLOCK_TIME_NONE; timecodestamper->ltc_current_running_time = GST_CLOCK_TIME_NONE; if (timecodestamper->ltc_internal_tc != NULL) { gst_video_time_code_free (timecodestamper->ltc_internal_tc); timecodestamper->ltc_internal_tc = NULL; } if (timecodestamper->ltc_current_tc != NULL) { gst_video_time_code_free (timecodestamper->ltc_current_tc); timecodestamper->ltc_current_tc = NULL; } timecodestamper->ltc_current_tc_running_time = GST_CLOCK_TIME_NONE; if (timecodestamper->ltc_dec) { ltc_decoder_free (timecodestamper->ltc_dec); timecodestamper->ltc_dec = NULL; } if (timecodestamper->stream_align) { gst_audio_stream_align_free (timecodestamper->stream_align); timecodestamper->stream_align = NULL; } timecodestamper->ltc_total = 0; g_mutex_unlock (&timecodestamper->mutex); #endif return TRUE; } static gboolean gst_timecodestamper_start (GstBaseTransform * trans) { #if HAVE_LTC GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (trans); g_mutex_lock (&timecodestamper->mutex); timecodestamper->video_flushing = FALSE; timecodestamper->video_eos = FALSE; g_mutex_unlock (&timecodestamper->mutex); #endif return TRUE; } /* Must be called with object lock */ static void gst_timecodestamper_update_drop_frame (GstTimeCodeStamper * timecodestamper) { if (timecodestamper->drop_frame && timecodestamper->vinfo.fps_d == 1001 && (timecodestamper->vinfo.fps_n == 30000 || timecodestamper->vinfo.fps_n == 60000)) { if (timecodestamper->internal_tc) timecodestamper->internal_tc->config.flags |= GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME; if (timecodestamper->rtc_tc) timecodestamper->rtc_tc->config.flags |= GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME; #if HAVE_LTC if (timecodestamper->ltc_current_tc) timecodestamper->ltc_current_tc->config.flags |= GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME; if (timecodestamper->ltc_internal_tc) timecodestamper->ltc_internal_tc->config.flags |= GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME; #endif } else { if (timecodestamper->internal_tc) timecodestamper->internal_tc->config.flags &= ~GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME; if (timecodestamper->rtc_tc) timecodestamper->rtc_tc->config.flags &= ~GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME; #if HAVE_LTC if (timecodestamper->ltc_current_tc) timecodestamper->ltc_current_tc->config.flags &= ~GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME; if (timecodestamper->ltc_internal_tc) timecodestamper->ltc_internal_tc->config.flags &= ~GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME; #endif } } static void gst_timecodestamper_update_timecode_framerate (GstTimeCodeStamper * timecodestamper, const GstVideoInfo * vinfo, GstVideoTimeCode * timecode) { guint64 nframes; GstClockTime time; GDateTime *jam = NULL; GstVideoTimeCodeFlags tc_flags = 0; if (!timecode) return; if (timecodestamper->vinfo.interlace_mode != GST_VIDEO_INTERLACE_MODE_PROGRESSIVE) tc_flags |= GST_VIDEO_TIME_CODE_FLAGS_INTERLACED; if (timecodestamper->drop_frame && timecodestamper->vinfo.fps_d == 1001 && (timecodestamper->vinfo.fps_n == 30000 || timecodestamper->vinfo.fps_n == 60000)) tc_flags |= GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME; nframes = gst_video_time_code_frames_since_daily_jam (timecode); time = gst_util_uint64_scale (nframes, GST_SECOND * timecodestamper->vinfo.fps_d, timecodestamper->vinfo.fps_n); jam = timecode->config.latest_daily_jam ? g_date_time_ref (timecode-> config.latest_daily_jam) : NULL; gst_video_time_code_clear (timecode); gst_video_time_code_init (timecode, timecodestamper->vinfo.fps_n, timecodestamper->vinfo.fps_d, jam, tc_flags, 0, 0, 0, 0, 0); if (jam) g_date_time_unref (jam); nframes = gst_util_uint64_scale (time, vinfo->fps_n, GST_SECOND * vinfo->fps_d); gst_video_time_code_add_frames (timecode, nframes); } /* Must be called with object lock */ static void gst_timecodestamper_update_framerate (GstTimeCodeStamper * timecodestamper, const GstVideoInfo * vinfo) { /* Nothing changed */ if (vinfo->fps_n == timecodestamper->vinfo.fps_n && vinfo->fps_d == timecodestamper->vinfo.fps_d) return; gst_timecodestamper_update_timecode_framerate (timecodestamper, vinfo, timecodestamper->internal_tc); gst_timecodestamper_update_timecode_framerate (timecodestamper, vinfo, timecodestamper->last_tc); gst_timecodestamper_update_timecode_framerate (timecodestamper, vinfo, timecodestamper->rtc_tc); #if HAVE_LTC gst_timecodestamper_update_timecode_framerate (timecodestamper, vinfo, timecodestamper->ltc_current_tc); gst_timecodestamper_update_timecode_framerate (timecodestamper, vinfo, timecodestamper->ltc_internal_tc); #endif } static gboolean gst_timecodestamper_sink_event (GstBaseTransform * trans, GstEvent * event) { gboolean ret = FALSE; GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (trans); GST_DEBUG_OBJECT (trans, "received event %" GST_PTR_FORMAT, event); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_SEGMENT: { GstSegment segment; gst_event_copy_segment (event, &segment); if (segment.format != GST_FORMAT_TIME) { GST_ERROR_OBJECT (timecodestamper, "Invalid segment format"); gst_event_unref (event); return FALSE; } break; } case GST_EVENT_CAPS: { GstCaps *caps; GstVideoInfo info; GST_OBJECT_LOCK (timecodestamper); gst_event_parse_caps (event, &caps); if (!gst_video_info_from_caps (&info, caps)) { GST_OBJECT_UNLOCK (timecodestamper); gst_event_unref (event); return FALSE; } if (info.fps_n == 0) { GST_WARNING_OBJECT (timecodestamper, "Non-constant frame rate found. Refusing to create a timecode"); GST_OBJECT_UNLOCK (timecodestamper); gst_event_unref (event); return FALSE; } gst_timecodestamper_update_framerate (timecodestamper, &info); timecodestamper->vinfo = info; GST_OBJECT_UNLOCK (timecodestamper); break; } #if HAVE_LTC case GST_EVENT_FLUSH_START: g_mutex_lock (&timecodestamper->mutex); timecodestamper->video_flushing = TRUE; g_cond_signal (&timecodestamper->ltc_cond_video); g_mutex_unlock (&timecodestamper->mutex); break; case GST_EVENT_FLUSH_STOP: g_mutex_lock (&timecodestamper->mutex); timecodestamper->video_flushing = FALSE; timecodestamper->video_eos = FALSE; g_mutex_unlock (&timecodestamper->mutex); break; case GST_EVENT_EOS: g_mutex_lock (&timecodestamper->mutex); timecodestamper->video_eos = TRUE; g_cond_signal (&timecodestamper->ltc_cond_audio); g_mutex_unlock (&timecodestamper->mutex); break; #endif default: break; } ret = GST_BASE_TRANSFORM_CLASS (gst_timecodestamper_parent_class)->sink_event (trans, event); return ret; } static gboolean remove_timecode_meta (GstBuffer * buffer, GstMeta ** meta, gpointer user_data) { if (meta && *meta && (*meta)->info->api == GST_VIDEO_TIME_CODE_META_API_TYPE) { *meta = NULL; } return TRUE; } static GstFlowReturn gst_timecodestamper_transform_ip (GstBaseTransform * vfilter, GstBuffer * buffer) { GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (vfilter); GstClockTime running_time, base_time, clock_time; GstClock *clock; GstClockTime clock_time_now; GDateTime *dt_now, *dt_frame; GstVideoTimeCode *tc = NULL; gboolean free_tc = FALSE; GstVideoTimeCodeMeta *tc_meta; GstFlowReturn flow_ret = GST_FLOW_OK; GstVideoTimeCodeFlags tc_flags = 0; if (timecodestamper->vinfo.fps_n == 0 || timecodestamper->vinfo.fps_d == 0 || !GST_BUFFER_PTS_IS_VALID (buffer)) { gst_buffer_unref (buffer); return GST_FLOW_NOT_NEGOTIATED; } /* Collect all the current times */ base_time = gst_element_get_base_time (GST_ELEMENT (timecodestamper)); clock = gst_element_get_clock (GST_ELEMENT (timecodestamper)); if (clock) { clock_time_now = gst_clock_get_time (clock); gst_object_unref (clock); } else { clock_time_now = GST_CLOCK_TIME_NONE; } dt_now = g_date_time_new_now_local (); running_time = gst_segment_to_running_time (&vfilter->segment, GST_FORMAT_TIME, GST_BUFFER_PTS (buffer)); if (clock_time_now != GST_CLOCK_TIME_NONE) { gdouble seconds_diff; clock_time = running_time + base_time; if (clock_time_now > clock_time) { seconds_diff = (clock_time_now - clock_time) / -1000000000.0; } else { seconds_diff = (clock_time - clock_time_now) / 1000000000.0; } dt_frame = g_date_time_add_seconds (dt_now, seconds_diff); } else { /* If we have no clock we can't really know the time of the frame */ dt_frame = g_date_time_ref (dt_now); } GST_DEBUG_OBJECT (timecodestamper, "Handling video frame with running time %" GST_TIME_FORMAT, GST_TIME_ARGS (running_time)); tc_meta = gst_buffer_get_video_time_code_meta (buffer); /* Update all our internal timecodes as needed */ GST_OBJECT_LOCK (timecodestamper); if (timecodestamper->vinfo.interlace_mode != GST_VIDEO_INTERLACE_MODE_PROGRESSIVE) tc_flags |= GST_VIDEO_TIME_CODE_FLAGS_INTERLACED; if (timecodestamper->drop_frame && timecodestamper->vinfo.fps_d == 1001 && (timecodestamper->vinfo.fps_n == 30000 || timecodestamper->vinfo.fps_n == 60000)) tc_flags |= GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME; /* If we don't have an internal timecode yet then either a new one was just * set via the property or we just started. Initialize it here, otherwise * increment it by one */ if (!timecodestamper->internal_tc) { gchar *tc_str; if (timecodestamper->set_internal_tc) timecodestamper->internal_tc = gst_video_time_code_new (timecodestamper->vinfo.fps_n, timecodestamper->vinfo.fps_d, timecodestamper->set_internal_tc->config.latest_daily_jam, tc_flags, timecodestamper->set_internal_tc->hours, timecodestamper->set_internal_tc->minutes, timecodestamper->set_internal_tc->seconds, timecodestamper->set_internal_tc->frames, timecodestamper->set_internal_tc->field_count); else timecodestamper->internal_tc = gst_video_time_code_new (timecodestamper->vinfo.fps_n, timecodestamper->vinfo.fps_d, dt_frame, tc_flags, 0, 0, 0, 0, 0); tc_str = gst_video_time_code_to_string (timecodestamper->internal_tc); GST_DEBUG_OBJECT (timecodestamper, "Initialized internal timecode to %s", tc_str); g_free (tc_str); } else { gchar *tc_str; gst_video_time_code_increment_frame (timecodestamper->internal_tc); tc_str = gst_video_time_code_to_string (timecodestamper->internal_tc); GST_DEBUG_OBJECT (timecodestamper, "Incremented internal timecode to %s", tc_str); g_free (tc_str); } /* If we have a new timecode on the incoming frame, update our last known * timecode or otherwise increment it by one */ if (tc_meta) { gchar *tc_str; if (timecodestamper->last_tc) gst_video_time_code_free (timecodestamper->last_tc); timecodestamper->last_tc = gst_video_time_code_copy (&tc_meta->tc); tc_str = gst_video_time_code_to_string (timecodestamper->last_tc); GST_DEBUG_OBJECT (timecodestamper, "Updated upstream timecode to %s", tc_str); g_free (tc_str); } else { gchar *tc_str; if (timecodestamper->last_tc) { gst_video_time_code_increment_frame (timecodestamper->last_tc); tc_str = gst_video_time_code_to_string (timecodestamper->last_tc); GST_DEBUG_OBJECT (timecodestamper, "Incremented upstream timecode to %s", tc_str); g_free (tc_str); } else { GST_DEBUG_OBJECT (timecodestamper, "Never saw an upstream timecode"); } } /* Update RTC-based timecode */ { GstVideoTimeCode rtc_timecode_now; gchar *tc_str, *dt_str; /* Create timecode for the current frame time */ memset (&rtc_timecode_now, 0, sizeof (rtc_timecode_now)); gst_video_time_code_init_from_date_time_full (&rtc_timecode_now, timecodestamper->vinfo.fps_n, timecodestamper->vinfo.fps_d, dt_frame, tc_flags, 0); tc_str = gst_video_time_code_to_string (&rtc_timecode_now); dt_str = g_date_time_format (dt_frame, "%F %R %z"); GST_DEBUG_OBJECT (timecodestamper, "Created RTC timecode %s for %s (%06u us)", tc_str, dt_str, g_date_time_get_microsecond (dt_frame)); g_free (dt_str); g_free (tc_str); /* If we don't have an RTC timecode yet, directly initialize with this one */ if (!timecodestamper->rtc_tc) { timecodestamper->rtc_tc = gst_video_time_code_copy (&rtc_timecode_now); tc_str = gst_video_time_code_to_string (timecodestamper->rtc_tc); GST_DEBUG_OBJECT (timecodestamper, "Initialized RTC timecode to %s", tc_str); g_free (tc_str); } else { GstClockTime rtc_now_time, rtc_tc_time; GstClockTime rtc_diff; /* Increment the old RTC timecode to this frame */ gst_video_time_code_increment_frame (timecodestamper->rtc_tc); /* Otherwise check if we drifted too much and need to resync */ rtc_tc_time = gst_video_time_code_nsec_since_daily_jam (timecodestamper->rtc_tc); rtc_now_time = gst_video_time_code_nsec_since_daily_jam (&rtc_timecode_now); if (rtc_tc_time > rtc_now_time) rtc_diff = rtc_tc_time - rtc_now_time; else rtc_diff = rtc_now_time - rtc_tc_time; if (timecodestamper->rtc_auto_resync && timecodestamper->rtc_max_drift != GST_CLOCK_TIME_NONE && rtc_diff > timecodestamper->rtc_max_drift) { gst_video_time_code_free (timecodestamper->rtc_tc); timecodestamper->rtc_tc = gst_video_time_code_copy (&rtc_timecode_now); tc_str = gst_video_time_code_to_string (timecodestamper->rtc_tc); GST_DEBUG_OBJECT (timecodestamper, "Updated RTC timecode to %s (%s%" GST_TIME_FORMAT " drift)", tc_str, (rtc_tc_time > rtc_now_time ? "-" : "+"), GST_TIME_ARGS (rtc_diff)); g_free (tc_str); } else { /* Else nothing to do here, we use the current one */ tc_str = gst_video_time_code_to_string (timecodestamper->rtc_tc); GST_DEBUG_OBJECT (timecodestamper, "Incremented RTC timecode to %s (%s%" GST_TIME_FORMAT " drift)", tc_str, (rtc_tc_time > rtc_now_time ? "-" : "+"), GST_TIME_ARGS (rtc_diff)); g_free (tc_str); } } gst_video_time_code_clear (&rtc_timecode_now); } GST_OBJECT_UNLOCK (timecodestamper); /* Update LTC-based timecode as needed */ #if HAVE_LTC { GstClockTime frame_duration; gchar *tc_str; LTCFrameExt ltc_frame; gboolean updated_internal = FALSE; frame_duration = gst_util_uint64_scale_int_ceil (GST_SECOND, timecodestamper->vinfo.fps_d, timecodestamper->vinfo.fps_n); g_mutex_lock (&timecodestamper->mutex); /* Wait until the the audio is at least 2 frame durations ahead of the * video to allow for some slack, or the video pad is flushing or the * LTC pad is EOS. */ while ((timecodestamper->ltc_current_running_time == GST_CLOCK_TIME_NONE || timecodestamper->ltc_current_running_time < running_time + 2 * frame_duration) && !timecodestamper->video_flushing && !timecodestamper->ltc_eos) { g_cond_wait (&timecodestamper->ltc_cond_video, &timecodestamper->mutex); } if (timecodestamper->video_flushing) { g_mutex_unlock (&timecodestamper->mutex); flow_ret = GST_FLOW_FLUSHING; goto out; } GST_OBJECT_LOCK (timecodestamper); /* Take timecodes out of the queue until we're at the current video * position, but first check the last timecode we took out of the queue * if any. */ while (timecodestamper->ltc_dec && (timecodestamper->ltc_current_tc || ltc_decoder_read (timecodestamper->ltc_dec, <c_frame) == 1)) { GstVideoTimeCode ltc_read_tc, *ltc_read_tc_ptr = NULL; GstClockTime ltc_running_time; memset (<c_read_tc, 0, sizeof (ltc_read_tc)); if (timecodestamper->ltc_current_tc) { ltc_running_time = timecodestamper->ltc_current_tc_running_time; ltc_read_tc_ptr = timecodestamper->ltc_current_tc; tc_str = gst_video_time_code_to_string (timecodestamper->ltc_current_tc); GST_INFO_OBJECT (timecodestamper, "Using previous LTC timecode %s at %" GST_TIME_FORMAT, tc_str, GST_TIME_ARGS (ltc_running_time)); g_free (tc_str); } else { SMPTETimecode stc; gint fps_n_div; if (ltc_frame.off_start < 0) { GstClockTime offset = gst_util_uint64_scale (GST_SECOND, -ltc_frame.off_start, timecodestamper->ainfo.rate); if (offset > timecodestamper->ltc_first_running_time) ltc_running_time = 0; else ltc_running_time = timecodestamper->ltc_first_running_time - offset; } else { ltc_running_time = timecodestamper->ltc_first_running_time + gst_util_uint64_scale (GST_SECOND, ltc_frame.off_start, timecodestamper->ainfo.rate); } ltc_frame_to_time (&stc, <c_frame.ltc, 0); GST_INFO_OBJECT (timecodestamper, "Got LTC timecode %02d:%02d:%02d:%02d at %" GST_TIME_FORMAT, stc.hours, stc.mins, stc.secs, stc.frame, GST_TIME_ARGS (ltc_running_time)); fps_n_div = ((gdouble) timecodestamper->vinfo.fps_n) / timecodestamper->vinfo.fps_d > 30 ? 2 : 1; gst_video_time_code_clear (<c_read_tc); gst_video_time_code_init (<c_read_tc, timecodestamper->vinfo.fps_n / fps_n_div, timecodestamper->vinfo.fps_d, timecodestamper->ltc_daily_jam, tc_flags, stc.hours, stc.mins, stc.secs, stc.frame, 0); ltc_read_tc_ptr = <c_read_tc; } /* A timecode frame that starts +/- half a frame to the * video frame is considered belonging to that video frame. * * If it's further ahead than half a frame duration, break out of * the loop here and reconsider on the next frame. */ if (ABSDIFF (running_time, ltc_running_time) <= frame_duration / 2) { /* If we're resyncing LTC in general, directly replace the current * LTC timecode with the new one we read. Otherwise we'll continue * counting based on the previous timecode we had */ if (timecodestamper->ltc_auto_resync) { if (timecodestamper->ltc_internal_tc) gst_video_time_code_free (timecodestamper->ltc_internal_tc); if (gst_video_time_code_is_valid (ltc_read_tc_ptr)) { timecodestamper->ltc_internal_tc = gst_video_time_code_copy (ltc_read_tc_ptr); updated_internal = TRUE; GST_INFO_OBJECT (timecodestamper, "Resynced internal LTC counter"); } else { tc_str = gst_video_time_code_to_string (ltc_read_tc_ptr); GST_INFO_OBJECT (timecodestamper, "Invalid LTC timecode %s", tc_str); g_free (tc_str); } } /* And store it for the next frame in case it has more or less the * same running time */ timecodestamper->ltc_current_tc = gst_video_time_code_copy (ltc_read_tc_ptr); timecodestamper->ltc_current_tc_running_time = ltc_running_time; gst_video_time_code_clear (<c_read_tc); break; } else if (ltc_running_time > running_time && ltc_running_time - running_time > frame_duration / 2) { /* Store it for the next frame */ timecodestamper->ltc_current_tc = gst_video_time_code_copy (ltc_read_tc_ptr); timecodestamper->ltc_current_tc_running_time = ltc_running_time; gst_video_time_code_clear (<c_read_tc); break; } /* otherwise it's in the past and we need to consider the next * timecode. Forget the current timecode and read a new one */ if (timecodestamper->ltc_current_tc) { gst_video_time_code_free (timecodestamper->ltc_current_tc); timecodestamper->ltc_current_tc = NULL; timecodestamper->ltc_current_tc_running_time = GST_CLOCK_TIME_NONE; } gst_video_time_code_clear (<c_read_tc); } /* If we didn't update from LTC above, increment our internal timecode * for this frame */ if (!updated_internal && timecodestamper->ltc_internal_tc) { gst_video_time_code_increment_frame (timecodestamper->ltc_internal_tc); } if (timecodestamper->ltc_internal_tc) { tc_str = gst_video_time_code_to_string (timecodestamper->ltc_internal_tc); GST_DEBUG_OBJECT (timecodestamper, "Updated LTC timecode to %s", tc_str); g_free (tc_str); } else { GST_DEBUG_OBJECT (timecodestamper, "Have no LTC timecode yet"); } GST_OBJECT_UNLOCK (timecodestamper); g_cond_signal (&timecodestamper->ltc_cond_audio); g_mutex_unlock (&timecodestamper->mutex); } #endif GST_OBJECT_LOCK (timecodestamper); switch (timecodestamper->tc_source) { case GST_TIME_CODE_STAMPER_SOURCE_INTERNAL: tc = timecodestamper->internal_tc; break; case GST_TIME_CODE_STAMPER_SOURCE_ZERO: tc = gst_video_time_code_new (timecodestamper->vinfo.fps_n, timecodestamper->vinfo.fps_d, NULL, tc_flags, 0, 0, 0, 0, 0); free_tc = TRUE; break; case GST_TIME_CODE_STAMPER_SOURCE_LAST_KNOWN: tc = timecodestamper->last_tc; if (!tc) tc = timecodestamper->internal_tc; break; case GST_TIME_CODE_STAMPER_SOURCE_LAST_KNOWN_OR_ZERO: tc = timecodestamper->last_tc; if (!tc) { tc = gst_video_time_code_new (timecodestamper->vinfo.fps_n, timecodestamper->vinfo.fps_d, NULL, tc_flags, 0, 0, 0, 0, 0); free_tc = TRUE; } break; case GST_TIME_CODE_STAMPER_SOURCE_LTC: #if HAVE_LTC if (timecodestamper->ltc_current_tc) tc = timecodestamper->ltc_current_tc; #endif if (!tc) { tc = gst_video_time_code_new (timecodestamper->vinfo.fps_n, timecodestamper->vinfo.fps_d, NULL, tc_flags, 0, 0, 0, 0, 0); free_tc = TRUE; } break; case GST_TIME_CODE_STAMPER_SOURCE_RTC: tc = timecodestamper->rtc_tc; break; } switch (timecodestamper->tc_set) { case GST_TIME_CODE_STAMPER_SET_NEVER: break; case GST_TIME_CODE_STAMPER_SET_KEEP: if (!tc_meta && tc) { gchar *tc_str; if (timecodestamper->timecode_offset) { if (!free_tc) { tc = gst_video_time_code_copy (tc); free_tc = TRUE; } gst_video_time_code_add_frames (tc, timecodestamper->timecode_offset); } tc_str = gst_video_time_code_to_string (tc); GST_DEBUG_OBJECT (timecodestamper, "Storing timecode %s", tc_str); g_free (tc_str); gst_buffer_add_video_time_code_meta (buffer, tc); } break; case GST_TIME_CODE_STAMPER_SET_ALWAYS: gst_buffer_foreach_meta (buffer, remove_timecode_meta, NULL); if (tc) { gchar *tc_str; if (timecodestamper->timecode_offset) { if (!free_tc) { tc = gst_video_time_code_copy (tc); free_tc = TRUE; } gst_video_time_code_add_frames (tc, timecodestamper->timecode_offset); } tc_str = gst_video_time_code_to_string (tc); GST_DEBUG_OBJECT (timecodestamper, "Storing timecode %s", tc_str); g_free (tc_str); gst_buffer_add_video_time_code_meta (buffer, tc); } break; } GST_OBJECT_UNLOCK (timecodestamper); if (timecodestamper->post_messages && tc) { GstClockTime stream_time, running_time, duration; GstStructure *s; GstMessage *msg; running_time = gst_segment_to_running_time (&vfilter->segment, GST_FORMAT_TIME, GST_BUFFER_PTS (buffer)); stream_time = gst_segment_to_stream_time (&vfilter->segment, GST_FORMAT_TIME, GST_BUFFER_PTS (buffer)); duration = gst_util_uint64_scale_int (GST_SECOND, timecodestamper->vinfo.fps_d, timecodestamper->vinfo.fps_n); s = gst_structure_new ("timecodestamper", "timestamp", G_TYPE_UINT64, GST_BUFFER_PTS (buffer), "stream-time", G_TYPE_UINT64, stream_time, "running-time", G_TYPE_UINT64, running_time, "duration", G_TYPE_UINT64, duration, "timecode", GST_TYPE_VIDEO_TIME_CODE, tc, NULL); msg = gst_message_new_element (GST_OBJECT (timecodestamper), s); gst_element_post_message (GST_ELEMENT (timecodestamper), msg); } #if HAVE_LTC out: #endif if (dt_now) g_date_time_unref (dt_now); if (dt_frame) g_date_time_unref (dt_frame); if (free_tc && tc) gst_video_time_code_free (tc); return flow_ret; } static GstPad * gst_timecodestamper_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * name_templ, const GstCaps * caps) { #if HAVE_LTC GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (element); GST_OBJECT_LOCK (timecodestamper); if (timecodestamper->ltcpad) { GST_OBJECT_UNLOCK (timecodestamper); return NULL; } timecodestamper->ltcpad = gst_pad_new_from_static_template (&gst_timecodestamper_ltc_template, "ltc"); gst_pad_set_chain_function (timecodestamper->ltcpad, GST_DEBUG_FUNCPTR (gst_timecodestamper_ltcpad_chain)); gst_pad_set_event_function (timecodestamper->ltcpad, GST_DEBUG_FUNCPTR (gst_timecodestamper_ltcpad_event)); gst_pad_set_query_function (timecodestamper->ltcpad, GST_DEBUG_FUNCPTR (gst_timecodestamper_ltcpad_query)); gst_pad_set_activatemode_function (timecodestamper->ltcpad, GST_DEBUG_FUNCPTR (gst_timecodestamper_ltcpad_activatemode)); GST_OBJECT_UNLOCK (timecodestamper); gst_element_add_pad (element, timecodestamper->ltcpad); return timecodestamper->ltcpad; #else return NULL; #endif } static void gst_timecodestamper_release_pad (GstElement * element, GstPad * pad) { #if HAVE_LTC GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (element); GST_OBJECT_LOCK (timecodestamper); if (timecodestamper->ltcpad != pad) { GST_OBJECT_UNLOCK (timecodestamper); return; } timecodestamper->ltcpad = NULL; if (timecodestamper->ltc_internal_tc != NULL) { gst_video_time_code_free (timecodestamper->ltc_internal_tc); timecodestamper->ltc_internal_tc = NULL; } if (timecodestamper->ltc_current_tc != NULL) { gst_video_time_code_free (timecodestamper->ltc_current_tc); timecodestamper->ltc_current_tc = NULL; } timecodestamper->ltc_current_tc_running_time = GST_CLOCK_TIME_NONE; GST_OBJECT_UNLOCK (timecodestamper); gst_pad_set_active (pad, FALSE); g_mutex_lock (&timecodestamper->mutex); timecodestamper->ltc_flushing = TRUE; timecodestamper->ltc_eos = TRUE; g_cond_signal (&timecodestamper->ltc_cond_video); g_cond_signal (&timecodestamper->ltc_cond_audio); gst_audio_info_init (&timecodestamper->ainfo); gst_segment_init (&timecodestamper->ltc_segment, GST_FORMAT_UNDEFINED); timecodestamper->ltc_first_running_time = GST_CLOCK_TIME_NONE; timecodestamper->ltc_current_running_time = GST_CLOCK_TIME_NONE; if (timecodestamper->ltc_dec) { ltc_decoder_free (timecodestamper->ltc_dec); timecodestamper->ltc_dec = NULL; } if (timecodestamper->stream_align) { gst_audio_stream_align_free (timecodestamper->stream_align); timecodestamper->stream_align = NULL; } timecodestamper->ltc_total = 0; g_mutex_unlock (&timecodestamper->mutex); gst_element_remove_pad (element, pad); #endif } #if HAVE_LTC static GstFlowReturn gst_timecodestamper_ltcpad_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer) { GstFlowReturn fr = GST_FLOW_OK; GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (parent); GstMapInfo map; GstClockTime timestamp, running_time, duration; guint nsamples; gboolean discont; g_mutex_lock (&timecodestamper->mutex); if (timecodestamper->ltc_flushing) { g_mutex_unlock (&timecodestamper->mutex); gst_buffer_unref (buffer); return GST_FLOW_FLUSHING; } nsamples = gst_buffer_get_size (buffer) / GST_AUDIO_INFO_BPF (&timecodestamper->ainfo); if (!timecodestamper->stream_align) { timecodestamper->stream_align = gst_audio_stream_align_new (timecodestamper->ainfo.rate, GST_SECOND, 40 * GST_MSECOND); } discont = gst_audio_stream_align_process (timecodestamper->stream_align, GST_BUFFER_IS_DISCONT (buffer), GST_BUFFER_PTS (buffer), nsamples, ×tamp, &duration, NULL); if (discont) { if (timecodestamper->ltc_dec) ltc_decoder_queue_flush (timecodestamper->ltc_dec); timecodestamper->ltc_total = 0; } if (!timecodestamper->ltc_dec) { gint samples_per_frame = 1920; GST_OBJECT_LOCK (timecodestamper); /* This is only for initialization and needs to be somewhat close to the * real value. It will be tracked automatically afterwards */ if (timecodestamper->vinfo.fps_n) { samples_per_frame = timecodestamper->ainfo.rate * timecodestamper->vinfo.fps_d / timecodestamper->vinfo.fps_n; } GST_OBJECT_UNLOCK (timecodestamper); timecodestamper->ltc_dec = ltc_decoder_create (samples_per_frame, DEFAULT_LTC_QUEUE); timecodestamper->ltc_total = 0; } running_time = gst_segment_to_running_time (&timecodestamper->ltc_segment, GST_FORMAT_TIME, timestamp); timecodestamper->ltc_current_running_time = running_time + duration; GST_DEBUG_OBJECT (timecodestamper, "Handling LTC audio buffer at %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT " (offset %" G_GUINT64_FORMAT ")", GST_TIME_ARGS (running_time), GST_TIME_ARGS (timecodestamper->ltc_current_running_time), (guint64) timecodestamper->ltc_total); if (timecodestamper->ltc_total == 0) { timecodestamper->ltc_first_running_time = running_time; } gst_buffer_map (buffer, &map, GST_MAP_READ); ltc_decoder_write (timecodestamper->ltc_dec, map.data, map.size, timecodestamper->ltc_total); timecodestamper->ltc_total += map.size; gst_buffer_unmap (buffer, &map); g_cond_signal (&timecodestamper->ltc_cond_video); /* Wait until the video caught up if we already queued up a lot of pending * timecodes, or until video is EOS or the LTC pad is flushing. */ while (ltc_decoder_queue_length (timecodestamper->ltc_dec) > DEFAULT_LTC_QUEUE / 2 && !timecodestamper->video_eos && !timecodestamper->ltc_flushing) { g_cond_wait (&timecodestamper->ltc_cond_audio, &timecodestamper->mutex); } if (timecodestamper->ltc_flushing) fr = GST_FLOW_FLUSHING; else fr = GST_FLOW_OK; g_mutex_unlock (&timecodestamper->mutex); gst_buffer_unref (buffer); return fr; } static gboolean gst_timecodestamper_ltcpad_event (GstPad * pad, GstObject * parent, GstEvent * event) { GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (parent); GstCaps *caps; gboolean ret = TRUE; switch (GST_EVENT_TYPE (event)) { case GST_EVENT_CAPS: gst_event_parse_caps (event, &caps); if (!gst_audio_info_from_caps (&timecodestamper->ainfo, caps)) { gst_event_unref (event); return FALSE; } if (timecodestamper->stream_align) { gst_audio_stream_align_set_rate (timecodestamper->stream_align, timecodestamper->ainfo.rate); } break; case GST_EVENT_SEGMENT: gst_event_copy_segment (event, &timecodestamper->ltc_segment); break; case GST_EVENT_FLUSH_START: g_mutex_lock (&timecodestamper->mutex); timecodestamper->ltc_flushing = TRUE; g_cond_signal (&timecodestamper->ltc_cond_audio); g_mutex_unlock (&timecodestamper->mutex); break; case GST_EVENT_FLUSH_STOP: g_mutex_lock (&timecodestamper->mutex); timecodestamper->ltc_flushing = FALSE; timecodestamper->ltc_eos = FALSE; gst_segment_init (&timecodestamper->ltc_segment, GST_FORMAT_UNDEFINED); g_mutex_unlock (&timecodestamper->mutex); break; case GST_EVENT_EOS: g_mutex_lock (&timecodestamper->mutex); timecodestamper->ltc_eos = TRUE; g_cond_signal (&timecodestamper->ltc_cond_video); g_mutex_unlock (&timecodestamper->mutex); break; default: break; } gst_event_unref (event); return ret; } static gboolean gst_timecodestamper_ltcpad_query (GstPad * pad, GstObject * parent, GstQuery * query) { GstCaps *caps, *filter, *tcaps; switch (GST_QUERY_TYPE (query)) { case GST_QUERY_CAPS: gst_query_parse_caps (query, &filter); tcaps = gst_pad_get_pad_template_caps (pad); if (filter) caps = gst_caps_intersect_full (tcaps, filter, GST_CAPS_INTERSECT_FIRST); else caps = gst_caps_ref (tcaps); gst_query_set_caps_result (query, caps); gst_caps_unref (tcaps); gst_caps_unref (caps); return TRUE; default: return gst_pad_query_default (pad, parent, query); } } static gboolean gst_timecodestamper_ltcpad_activatemode (GstPad * pad, GstObject * parent, GstPadMode mode, gboolean active) { GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (parent); if (active) { g_mutex_lock (&timecodestamper->mutex); timecodestamper->ltc_flushing = FALSE; timecodestamper->ltc_eos = FALSE; g_mutex_unlock (&timecodestamper->mutex); } else { g_mutex_lock (&timecodestamper->mutex); timecodestamper->ltc_flushing = TRUE; timecodestamper->ltc_eos = TRUE; g_cond_signal (&timecodestamper->ltc_cond_audio); g_mutex_unlock (&timecodestamper->mutex); } return TRUE; } static gboolean gst_timecodestamper_videopad_activatemode (GstPad * pad, GstObject * parent, GstPadMode mode, gboolean active) { GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (parent); if (active) { g_mutex_lock (&timecodestamper->mutex); timecodestamper->video_flushing = FALSE; timecodestamper->video_eos = FALSE; g_mutex_unlock (&timecodestamper->mutex); } else { g_mutex_lock (&timecodestamper->mutex); timecodestamper->video_flushing = TRUE; g_cond_signal (&timecodestamper->ltc_cond_video); g_mutex_unlock (&timecodestamper->mutex); } return timecodestamper->video_activatemode_default (pad, parent, mode, active); } static GstIterator * gst_timecodestamper_src_iterate_internal_link (GstPad * pad, GstObject * parent) { GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (parent); GValue value = G_VALUE_INIT; GstIterator *it; g_value_init (&value, GST_TYPE_PAD); g_value_set_object (&value, GST_BASE_TRANSFORM_SINK_PAD (timecodestamper)); it = gst_iterator_new_single (GST_TYPE_PAD, &value); g_value_unset (&value); return it; } #endif