/* * GStreamer * Copyright (C) 2016 Vivia Nikolaidou * * Based on gstvideoframe-audiolevel.c: * Copyright (C) 2015 Vivia Nikolaidou * * 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-timecodewait * * This element acts like a synchronized audio/video "level". It gathers * all audio buffers sent between two video frames, and then sends a message * that contains the RMS value of all samples for these buffers. * * * Example launch line * |[ * gst-launch-1.0 filesrc location="my_file" ! decodebin name=d ! "audio/x-raw" ! timecodewait name=l target-timecode-str="00:00:04:00" ! autoaudiosink d. ! "video/x-raw" ! timecodestamper ! l. l. ! queue ! timeoverlay time-mode=time-code ! autovideosink * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gsttimecodewait.h" #define GST_CAT_DEFAULT gst_timecodewait_debug GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT); static GstStaticPadTemplate audio_sink_template = GST_STATIC_PAD_TEMPLATE ("asink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("audio/x-raw") ); static GstStaticPadTemplate audio_src_template = GST_STATIC_PAD_TEMPLATE ("asrc", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("audio/x-raw") ); static GstStaticPadTemplate video_sink_template = GST_STATIC_PAD_TEMPLATE ("vsink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-raw") ); static GstStaticPadTemplate video_src_template = GST_STATIC_PAD_TEMPLATE ("vsrc", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-raw") ); #define parent_class gst_timecodewait_parent_class G_DEFINE_TYPE (GstTimeCodeWait, gst_timecodewait, GST_TYPE_ELEMENT); enum { PROP_0, PROP_TARGET_TIME_CODE, PROP_TARGET_TIME_CODE_STRING }; #define DEFAULT_TARGET_TIMECODE_STR "00:00:00:00" static void gst_timecodewait_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_timecodewait_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstFlowReturn gst_timecodewait_asink_chain (GstPad * pad, GstObject * parent, GstBuffer * inbuf); static GstFlowReturn gst_timecodewait_vsink_chain (GstPad * pad, GstObject * parent, GstBuffer * inbuf); static gboolean gst_timecodewait_asink_event (GstPad * pad, GstObject * parent, GstEvent * event); static gboolean gst_timecodewait_vsink_event (GstPad * pad, GstObject * parent, GstEvent * event); static GstIterator *gst_timecodewait_iterate_internal_links (GstPad * pad, GstObject * parent); static void gst_timecodewait_finalize (GObject * gobject); static GstStateChangeReturn gst_timecodewait_change_state (GstElement * element, GstStateChange transition); static void gst_timecodewait_class_init (GstTimeCodeWaitClass * klass) { GstElementClass *gstelement_class; GObjectClass *gobject_class = (GObjectClass *) klass; GST_DEBUG_CATEGORY_INIT (gst_timecodewait_debug, "timecodewait", 0, "timecodewait"); gstelement_class = (GstElementClass *) klass; gst_element_class_set_static_metadata (gstelement_class, "Timecode Wait", "Filter/Audio/Video", "Drops all audio/video until a specific timecode has been reached", "Vivia Nikolaidou "); gobject_class->set_property = gst_timecodewait_set_property; gobject_class->get_property = gst_timecodewait_get_property; g_object_class_install_property (gobject_class, PROP_TARGET_TIME_CODE_STRING, g_param_spec_string ("target-timecode-string", "Target timecode (string)", "Timecode to wait for (string). Must take the form 00:00:00:00", DEFAULT_TARGET_TIMECODE_STR, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_TARGET_TIME_CODE, g_param_spec_boxed ("target-timecode", "Target timecode (object)", "Timecode to wait for (object)", GST_TYPE_VIDEO_TIME_CODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gobject_class->finalize = gst_timecodewait_finalize; gstelement_class->change_state = gst_timecodewait_change_state; gst_element_class_add_static_pad_template (gstelement_class, &audio_src_template); gst_element_class_add_static_pad_template (gstelement_class, &audio_sink_template); gst_element_class_add_static_pad_template (gstelement_class, &video_src_template); gst_element_class_add_static_pad_template (gstelement_class, &video_sink_template); } static void gst_timecodewait_init (GstTimeCodeWait * self) { self->asinkpad = gst_pad_new_from_static_template (&audio_sink_template, "asink"); gst_pad_set_chain_function (self->asinkpad, GST_DEBUG_FUNCPTR (gst_timecodewait_asink_chain)); gst_pad_set_event_function (self->asinkpad, GST_DEBUG_FUNCPTR (gst_timecodewait_asink_event)); gst_pad_set_iterate_internal_links_function (self->asinkpad, GST_DEBUG_FUNCPTR (gst_timecodewait_iterate_internal_links)); gst_element_add_pad (GST_ELEMENT (self), self->asinkpad); self->vsinkpad = gst_pad_new_from_static_template (&video_sink_template, "vsink"); gst_pad_set_chain_function (self->vsinkpad, GST_DEBUG_FUNCPTR (gst_timecodewait_vsink_chain)); gst_pad_set_event_function (self->vsinkpad, GST_DEBUG_FUNCPTR (gst_timecodewait_vsink_event)); gst_pad_set_iterate_internal_links_function (self->vsinkpad, GST_DEBUG_FUNCPTR (gst_timecodewait_iterate_internal_links)); gst_element_add_pad (GST_ELEMENT (self), self->vsinkpad); self->asrcpad = gst_pad_new_from_static_template (&audio_src_template, "asrc"); gst_pad_set_iterate_internal_links_function (self->asrcpad, GST_DEBUG_FUNCPTR (gst_timecodewait_iterate_internal_links)); gst_element_add_pad (GST_ELEMENT (self), self->asrcpad); self->vsrcpad = gst_pad_new_from_static_template (&video_src_template, "vsrc"); gst_pad_set_iterate_internal_links_function (self->vsrcpad, GST_DEBUG_FUNCPTR (gst_timecodewait_iterate_internal_links)); gst_element_add_pad (GST_ELEMENT (self), self->vsrcpad); GST_PAD_SET_PROXY_CAPS (self->asinkpad); GST_PAD_SET_PROXY_ALLOCATION (self->asinkpad); GST_PAD_SET_PROXY_CAPS (self->asrcpad); GST_PAD_SET_PROXY_SCHEDULING (self->asrcpad); GST_PAD_SET_PROXY_CAPS (self->vsinkpad); GST_PAD_SET_PROXY_ALLOCATION (self->vsinkpad); GST_PAD_SET_PROXY_CAPS (self->vsrcpad); GST_PAD_SET_PROXY_SCHEDULING (self->vsrcpad); self->running_time_of_timecode = GST_CLOCK_TIME_NONE; self->video_eos_flag = FALSE; self->audio_flush_flag = FALSE; self->shutdown_flag = FALSE; self->from_string = FALSE; self->tc = gst_video_time_code_new_empty (); g_mutex_init (&self->mutex); g_cond_init (&self->cond); } static GstStateChangeReturn gst_timecodewait_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn ret; GstTimeCodeWait *self = GST_TIMECODEWAIT (element); switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: g_mutex_lock (&self->mutex); self->shutdown_flag = TRUE; g_cond_signal (&self->cond); g_mutex_unlock (&self->mutex); break; case GST_STATE_CHANGE_READY_TO_PAUSED: g_mutex_lock (&self->mutex); self->shutdown_flag = FALSE; self->video_eos_flag = FALSE; self->audio_flush_flag = FALSE; g_mutex_unlock (&self->mutex); default: break; } ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: g_mutex_lock (&self->mutex); self->running_time_of_timecode = GST_CLOCK_TIME_NONE; gst_segment_init (&self->asegment, GST_FORMAT_UNDEFINED); self->asegment.position = GST_CLOCK_TIME_NONE; gst_segment_init (&self->vsegment, GST_FORMAT_UNDEFINED); self->vsegment.position = GST_CLOCK_TIME_NONE; g_mutex_unlock (&self->mutex); break; default: break; } return ret; } static void gst_timecodewait_finalize (GObject * object) { GstTimeCodeWait *self = GST_TIMECODEWAIT (object); if (self->tc) { gst_video_time_code_free (self->tc); self->tc = NULL; } g_mutex_clear (&self->mutex); g_cond_clear (&self->cond); G_OBJECT_CLASS (parent_class)->finalize (object); } static void gst_timecodewait_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstTimeCodeWait *self = GST_TIMECODEWAIT (object); switch (prop_id) { case PROP_TARGET_TIME_CODE_STRING:{ if (self->tc) g_value_take_string (value, gst_video_time_code_to_string (self->tc)); else g_value_set_string (value, DEFAULT_TARGET_TIMECODE_STR); break; } case PROP_TARGET_TIME_CODE:{ g_value_set_boxed (value, self->tc); break; } default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_timecodewait_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstTimeCodeWait *self = GST_TIMECODEWAIT (object); switch (prop_id) { case PROP_TARGET_TIME_CODE_STRING:{ gchar **parts; const gchar *tc_str; guint hours, minutes, seconds, frames; tc_str = g_value_get_string (value); parts = g_strsplit (tc_str, ":", 4); if (!parts || parts[3] == NULL) { GST_ERROR_OBJECT (self, "Error: Could not parse timecode %s. Please input a timecode in the form 00:00:00:00", tc_str); g_strfreev (parts); return; } hours = g_ascii_strtoll (parts[0], NULL, 10); minutes = g_ascii_strtoll (parts[1], NULL, 10); seconds = g_ascii_strtoll (parts[2], NULL, 10); frames = g_ascii_strtoll (parts[3], NULL, 10); gst_video_time_code_init (self->tc, 0, 1, NULL, 0, hours, minutes, seconds, frames, 0); if (self->vinfo.finfo != NULL) { self->tc->config.fps_n = self->vinfo.fps_n; self->tc->config.fps_d = self->vinfo.fps_d; } self->from_string = TRUE; g_strfreev (parts); break; } case PROP_TARGET_TIME_CODE:{ if (self->tc) gst_video_time_code_free (self->tc); self->tc = g_value_dup_boxed (value); self->from_string = FALSE; break; } default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean gst_timecodewait_vsink_event (GstPad * pad, GstObject * parent, GstEvent * event) { GstTimeCodeWait *self = GST_TIMECODEWAIT (parent); GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_SEGMENT: g_mutex_lock (&self->mutex); gst_event_copy_segment (event, &self->vsegment); if (self->vsegment.format != GST_FORMAT_TIME) { GST_ERROR_OBJECT (self, "Invalid segment format"); g_mutex_unlock (&self->mutex); gst_event_unref (event); return FALSE; } self->vsegment.position = GST_CLOCK_TIME_NONE; g_mutex_unlock (&self->mutex); break; case GST_EVENT_GAP: gst_event_unref (event); return TRUE; case GST_EVENT_EOS: g_mutex_lock (&self->mutex); self->video_eos_flag = TRUE; g_cond_signal (&self->cond); g_mutex_unlock (&self->mutex); break; case GST_EVENT_FLUSH_START: g_mutex_lock (&self->mutex); gst_segment_init (&self->vsegment, GST_FORMAT_UNDEFINED); g_cond_signal (&self->cond); g_mutex_unlock (&self->mutex); self->vsegment.position = GST_CLOCK_TIME_NONE; break; case GST_EVENT_CAPS:{ GstCaps *caps; gst_event_parse_caps (event, &caps); GST_DEBUG_OBJECT (self, "Got caps %" GST_PTR_FORMAT, caps); if (!gst_video_info_from_caps (&self->vinfo, caps)) { gst_event_unref (event); return FALSE; } g_mutex_lock (&self->mutex); if (self->from_string) { self->tc->config.fps_n = self->vinfo.fps_n; self->tc->config.fps_d = self->vinfo.fps_d; } g_mutex_unlock (&self->mutex); break; } default: break; } return gst_pad_event_default (pad, parent, event); } static gboolean gst_timecodewait_asink_event (GstPad * pad, GstObject * parent, GstEvent * event) { GstTimeCodeWait *self = GST_TIMECODEWAIT (parent); GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_SEGMENT: g_mutex_lock (&self->mutex); self->running_time_of_timecode = GST_CLOCK_TIME_NONE; gst_event_copy_segment (event, &self->asegment); if (self->asegment.format != GST_FORMAT_TIME) { GST_ERROR_OBJECT (self, "Invalid segment format"); g_mutex_unlock (&self->mutex); return FALSE; } self->asegment.position = GST_CLOCK_TIME_NONE; g_mutex_unlock (&self->mutex); break; case GST_EVENT_FLUSH_START: g_mutex_lock (&self->mutex); self->audio_flush_flag = TRUE; g_cond_signal (&self->cond); g_mutex_unlock (&self->mutex); break; case GST_EVENT_FLUSH_STOP: g_mutex_lock (&self->mutex); self->audio_flush_flag = FALSE; self->running_time_of_timecode = GST_CLOCK_TIME_NONE; gst_segment_init (&self->asegment, GST_FORMAT_UNDEFINED); self->asegment.position = GST_CLOCK_TIME_NONE; g_mutex_unlock (&self->mutex); break; case GST_EVENT_CAPS:{ GstCaps *caps; gst_event_parse_caps (event, &caps); GST_DEBUG_OBJECT (self, "Got caps %" GST_PTR_FORMAT, caps); g_mutex_lock (&self->mutex); if (!gst_audio_info_from_caps (&self->ainfo, caps)) { g_mutex_unlock (&self->mutex); return FALSE; } self->running_time_of_timecode = GST_CLOCK_TIME_NONE; g_mutex_unlock (&self->mutex); break; } default: break; } return gst_pad_event_default (pad, parent, event); } static GstFlowReturn gst_timecodewait_vsink_chain (GstPad * pad, GstObject * parent, GstBuffer * inbuf) { GstClockTime timestamp; GstTimeCodeWait *self = GST_TIMECODEWAIT (parent); GstClockTime duration; GstVideoTimeCode *tc = NULL; GstVideoTimeCodeMeta *tc_meta; timestamp = GST_BUFFER_TIMESTAMP (inbuf); if (timestamp == GST_CLOCK_TIME_NONE) { gst_buffer_unref (inbuf); return GST_FLOW_ERROR; } g_mutex_lock (&self->mutex); self->vsegment.position = timestamp; duration = GST_BUFFER_DURATION (inbuf); if (duration != GST_CLOCK_TIME_NONE) self->vsegment.position += duration; tc_meta = gst_buffer_get_video_time_code_meta (inbuf); if (tc_meta) tc = &tc_meta->tc; if (self->tc != NULL && tc != NULL) { if (gst_video_time_code_compare (tc, self->tc) < 0 && self->running_time_of_timecode == GST_CLOCK_TIME_NONE) { GST_DEBUG_OBJECT (self, "Timecode not yet reached, ignoring frame"); gst_buffer_unref (inbuf); inbuf = NULL; } else if (self->running_time_of_timecode == GST_CLOCK_TIME_NONE) { GST_INFO_OBJECT (self, "Target timecode reached at %" GST_TIME_FORMAT, GST_TIME_ARGS (self->vsegment.position)); self->running_time_of_timecode = gst_segment_to_running_time (&self->vsegment, GST_FORMAT_TIME, self->vsegment.position); } } g_cond_signal (&self->cond); g_mutex_unlock (&self->mutex); if (inbuf) return gst_pad_push (self->vsrcpad, inbuf); else return GST_FLOW_OK; } /* * assumes sign1 and sign2 are either 1 or -1 * returns 0 if sign1*num1 == sign2*num2 * -1 if sign1*num1 < sign2*num2 * 1 if sign1*num1 > sign2*num2 */ static gint gst_timecodewait_compare_guint64_with_signs (gint sign1, guint64 num1, gint sign2, guint64 num2) { if (sign1 != sign2) return sign1; else if (num1 == num2) return 0; else return num1 > num2 ? sign1 : -sign1; } static GstFlowReturn gst_timecodewait_asink_chain (GstPad * pad, GstObject * parent, GstBuffer * inbuf) { GstClockTime timestamp; GstTimeCodeWait *self = GST_TIMECODEWAIT (parent); GstClockTime current_running_time; GstClockTime video_running_time = GST_CLOCK_TIME_NONE; GstClockTime duration; GstClockTime running_time_at_end = GST_CLOCK_TIME_NONE; gint asign, vsign = 1, esign = 1; timestamp = GST_BUFFER_TIMESTAMP (inbuf); if (timestamp == GST_CLOCK_TIME_NONE) { gst_buffer_unref (inbuf); return GST_FLOW_ERROR; } g_mutex_lock (&self->mutex); self->asegment.position = timestamp; asign = gst_segment_to_running_time_full (&self->asegment, GST_FORMAT_TIME, self->asegment.position, ¤t_running_time); if (asign == 0) { g_mutex_unlock (&self->mutex); gst_buffer_unref (inbuf); GST_ERROR_OBJECT (self, "Could not get current running time"); return GST_FLOW_ERROR; } if (self->vsegment.format == GST_FORMAT_TIME) { vsign = gst_segment_to_running_time_full (&self->vsegment, GST_FORMAT_TIME, self->vsegment.position, &video_running_time); if (vsign == 0) { video_running_time = GST_CLOCK_TIME_NONE; } } while (!(self->video_eos_flag || self->audio_flush_flag || self->shutdown_flag) && (video_running_time == GST_CLOCK_TIME_NONE || gst_timecodewait_compare_guint64_with_signs (asign, current_running_time, vsign, video_running_time) == 1) && self->running_time_of_timecode == GST_CLOCK_TIME_NONE) { g_cond_wait (&self->cond, &self->mutex); vsign = gst_segment_to_running_time_full (&self->vsegment, GST_FORMAT_TIME, self->vsegment.position, &video_running_time); if (vsign == 0) { video_running_time = GST_CLOCK_TIME_NONE; } } if (self->audio_flush_flag || self->shutdown_flag) { GST_DEBUG_OBJECT (self, "Shutting down, ignoring frame"); gst_buffer_unref (inbuf); return GST_FLOW_FLUSHING; } duration = GST_BUFFER_DURATION (inbuf); if (duration != GST_CLOCK_TIME_NONE) { esign = gst_segment_to_running_time_full (&self->asegment, GST_FORMAT_TIME, self->asegment.position + duration, &running_time_at_end); if (esign == 0) { g_mutex_unlock (&self->mutex); GST_ERROR_OBJECT (self, "Could not get running time at end"); gst_buffer_unref (inbuf); return GST_FLOW_ERROR; } } if (self->running_time_of_timecode == GST_CLOCK_TIME_NONE || gst_timecodewait_compare_guint64_with_signs (esign, running_time_at_end, 1, self->running_time_of_timecode) == -1) { GST_DEBUG_OBJECT (self, "Dropped an audio buf at %" GST_TIME_FORMAT " with timecode %" GST_TIME_FORMAT " video timecode %" GST_TIME_FORMAT, GST_TIME_ARGS (current_running_time), GST_TIME_ARGS (self->running_time_of_timecode), GST_TIME_ARGS (video_running_time)); gst_buffer_unref (inbuf); inbuf = NULL; } else if (current_running_time < self->running_time_of_timecode && running_time_at_end > self->running_time_of_timecode) { GstSegment asegment2 = self->asegment; gst_segment_set_running_time (&asegment2, GST_FORMAT_TIME, self->running_time_of_timecode); inbuf = gst_audio_buffer_clip (inbuf, &asegment2, self->ainfo.rate, self->ainfo.bpf); } g_mutex_unlock (&self->mutex); if (inbuf) return gst_pad_push (self->asrcpad, inbuf); else return GST_FLOW_OK; } static GstIterator * gst_timecodewait_iterate_internal_links (GstPad * pad, GstObject * parent) { GstIterator *it = NULL; GstPad *opad; GValue val = G_VALUE_INIT; GstTimeCodeWait *self = GST_TIMECODEWAIT (parent); if (self->asinkpad == pad) opad = gst_object_ref (self->asrcpad); else if (self->asrcpad == pad) opad = gst_object_ref (self->asinkpad); else if (self->vsinkpad == pad) opad = gst_object_ref (self->vsrcpad); else if (self->vsrcpad == pad) opad = gst_object_ref (self->vsinkpad); else goto out; g_value_init (&val, GST_TYPE_PAD); g_value_set_object (&val, opad); it = gst_iterator_new_single (GST_TYPE_PAD, &val); g_value_unset (&val); gst_object_unref (opad); out: return it; }