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timecodewait: New element to wait for a specific timecode

Browse source 
timecodewait receives a timecode as an argument (either as string or as
GstVideoTimeCode - one is gst-launch-friendly and the other is code-friendly),
and it will drop all audio and video buffers until that timecode has been
reached.

https://bugzilla.gnome.org/show_bug.cgi?id=766419
This commit is contained in:
Vivia Nikolaidou 2016-05-31 19:21:17 +03:00 committed by Sebastian Dröge
parent a2c6e2b64a
commit 3072dd80d2
4 changed files with 722 additions and 5 deletions
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8
gst/timecode/Makefile.am
View file

@ -1,10 +1,10 @@
plugin_LTLIBRARIES = libgsttimecode.la
libgsttimecode_la_SOURCES = plugin.c gsttimecodestamper.c
libgsttimecode_la_SOURCES = plugin.c gsttimecodestamper.c gsttimecodewait.c
libgsttimecode_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
libgsttimecode_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) -lgstvideo-1.0 $(GST_LIBS)
libgsttimecode_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CFLAGS)
libgsttimecode_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) -lgstvideo-$(GST_API_VERSION) -lgstaudio-$(GST_API_VERSION) $(GST_LIBS) $(LIBM)
libgsttimecode_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgsttimecode_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS)
noinst_HEADERS = gsttimecodestamper.h
noinst_HEADERS = gsttimecodestamper.h gsttimecodewait.h

639
gst/timecode/gsttimecodewait.c Normal file
View file

@ -0,0 +1,639 @@
/*
* GStreamer
* Copyright (C) 2016 Vivia Nikolaidou <vivia@toolsonair.com>
*
* Based on gstvideoframe-audiolevel.c:
* Copyright (C) 2015 Vivia Nikolaidou <vivia@toolsonair.com>
*
* 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.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* 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
* </refsect2>
*/
#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 <vivia@toolsonair.com>");
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, &current_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;
}

70
gst/timecode/gsttimecodewait.h Normal file
View file

@ -0,0 +1,70 @@
/*
* GStreamer
* Copyright (C) 2016 Vivia Nikolaidou <vivia@toolsonair.com>
*
* 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_TIMECODEWAIT_H__
#define __GST_TIMECODEWAIT_H__
#include <gst/gst.h>
#include <gst/audio/audio.h>
#include <gst/video/video.h>
G_BEGIN_DECLS
#define GST_TYPE_TIMECODEWAIT (gst_timecodewait_get_type())
#define GST_TIMECODEWAIT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TIMECODEWAIT,GstTimeCodeWait))
#define GST_IS_TIMECODEWAIT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TIMECODEWAIT))
#define GST_TIMECODEWAIT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_TIMECODEWAIT,GstTimeCodeWaitClass))
#define GST_IS_TIMECODEWAIT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_TIMECODEWAIT))
#define GST_TIMECODEWAIT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_TIMECODEWAIT,GstTimeCodeWaitClass))
typedef struct _GstTimeCodeWait GstTimeCodeWait;
typedef struct _GstTimeCodeWaitClass GstTimeCodeWaitClass;
struct _GstTimeCodeWait
{
GstElement parent;
GstVideoTimeCode *tc;
gboolean from_string;
GstPad *asrcpad, *asinkpad, *vsrcpad, *vsinkpad;
GstAudioInfo ainfo;
GstVideoInfo vinfo;
GstSegment asegment, vsegment;
GstClockTime running_time_of_timecode;
gboolean video_eos_flag;
gboolean audio_flush_flag;
gboolean shutdown_flag;
GCond cond;
GMutex mutex;
};
struct _GstTimeCodeWaitClass
{
GstElementClass parent_class;
};
GType gst_timecodewait_get_type (void);
G_END_DECLS
#endif /* __GST_TIMECODEWAIT_H__ */

10
gst/timecode/plugin.c
View file

@ -25,12 +25,20 @@
#endif
#include "gsttimecodestamper.h"
#include "gsttimecodewait.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "timecodestamper", GST_RANK_NONE,
gboolean ret;
ret = gst_element_register (plugin, "timecodestamper", GST_RANK_NONE,
GST_TYPE_TIME_CODE_STAMPER);
ret &= gst_element_register (plugin, "timecodewait", GST_RANK_NONE,
GST_TYPE_TIMECODEWAIT);
return ret;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,