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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-10-03 01:02:19 +00:00
pushfilesrc: Add TIME SEGMENT capability
Adds a new set of properties to make pushfilesrc output a TIME SEGMENT (instead of the filesrc BYTE SEGMENT). When time-segment is set to True the following will happen: * Seeks are refused (data starts from the beginning of the file) * The BYTE segment will be replaced by a TIME segment with the values specified in the various properties * The first outgoing buffer will have a timestamp set on it (by default it has a value of GST_CLOCK_TIME_NONE)
This commit is contained in:
Edward Hervey
parent
f5d26af3c9
commit
0a381b9edd
2 changed files with 228 additions and 1 deletions
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@ -48,6 +48,30 @@
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GST_DEBUG_CATEGORY_STATIC (pushfilesrc_debug);
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#define GST_CAT_DEFAULT pushfilesrc_debug
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enum
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{
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PROP_0,
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PROP_LOCATION,
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PROP_TIME_SEGMENT,
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PROP_STREAM_TIME,
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PROP_START_TIME,
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PROP_INITIAL_TIMESTAMP,
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PROP_RATE,
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PROP_APPLIED_RATE
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};
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#define DEFAULT_TIME_SEGMENT FALSE
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#define DEFAULT_STREAM_TIME 0
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#define DEFAULT_START_TIME 0
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#define DEFAULT_INITIAL_TIMESTAMP GST_CLOCK_TIME_NONE
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#define DEFAULT_RATE 1.0
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#define DEFAULT_APPLIED_RATE 1.0
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static void gst_push_file_src_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_push_file_src_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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@ -91,6 +115,42 @@ gst_push_file_src_class_init (GstPushFileSrcClass * g_class)
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"pushfilesrc element");
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gobject_class->dispose = gst_push_file_src_dispose;
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gobject_class->set_property = gst_push_file_src_set_property;
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gobject_class->get_property = gst_push_file_src_get_property;
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g_object_class_install_property (gobject_class, PROP_LOCATION,
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g_param_spec_string ("location", "File Location",
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"Location of the file to read", NULL,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
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GST_PARAM_MUTABLE_READY));
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g_object_class_install_property (gobject_class, PROP_TIME_SEGMENT,
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g_param_spec_boolean ("time-segment", "Time Segment",
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"Emit TIME SEGMENTS", DEFAULT_TIME_SEGMENT, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_STREAM_TIME,
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g_param_spec_int64 ("stream-time", "Stream Time",
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"Initial Stream Time (if time-segment TRUE)", 0, G_MAXINT64,
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DEFAULT_STREAM_TIME, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_START_TIME,
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g_param_spec_int64 ("start-time", "Start Time",
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"Initial Start Time (if time-segment TRUE)", 0, G_MAXINT64,
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DEFAULT_START_TIME, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_INITIAL_TIMESTAMP,
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g_param_spec_uint64 ("initial-timestamp", "Initial Timestamp",
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"Initial Buffer Timestamp (if time-segment TRUE)", 0, G_MAXUINT64,
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DEFAULT_INITIAL_TIMESTAMP, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_RATE,
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g_param_spec_double ("rate", "Rate", "Rate to use in TIME SEGMENT",
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G_MINDOUBLE, G_MAXDOUBLE, DEFAULT_RATE, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_APPLIED_RATE,
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g_param_spec_double ("applied-rate", "Applied Rate",
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"Applied rate to use in TIME SEGMENT", G_MINDOUBLE, G_MAXDOUBLE,
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DEFAULT_APPLIED_RATE, G_PARAM_READWRITE));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&srctemplate));
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@ -101,15 +161,157 @@ gst_push_file_src_class_init (GstPushFileSrcClass * g_class)
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"Tim-Philipp Müller <tim centricular net>");
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}
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static void
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gst_push_file_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstPushFileSrc *src = (GstPushFileSrc *) object;
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switch (prop_id) {
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case PROP_LOCATION:
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g_object_set_property (G_OBJECT (src->filesrc), "location", value);
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break;
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case PROP_TIME_SEGMENT:
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src->time_segment = g_value_get_boolean (value);
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break;
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case PROP_STREAM_TIME:
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src->stream_time = g_value_get_int64 (value);
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break;
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case PROP_START_TIME:
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src->start_time = g_value_get_int64 (value);
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break;
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case PROP_INITIAL_TIMESTAMP:
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src->initial_timestamp = g_value_get_uint64 (value);
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break;
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case PROP_RATE:
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src->rate = g_value_get_double (value);
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break;
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case PROP_APPLIED_RATE:
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src->applied_rate = g_value_get_double (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_push_file_src_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstPushFileSrc *src = (GstPushFileSrc *) object;
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switch (prop_id) {
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case PROP_LOCATION:
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g_object_get_property (G_OBJECT (src->filesrc), "location", value);
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break;
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case PROP_TIME_SEGMENT:
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g_value_set_boolean (value, src->time_segment);
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break;
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case PROP_STREAM_TIME:
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g_value_set_int64 (value, src->stream_time);
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break;
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case PROP_START_TIME:
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g_value_set_int64 (value, src->start_time);
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break;
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case PROP_INITIAL_TIMESTAMP:
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g_value_set_uint64 (value, src->initial_timestamp);
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break;
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case PROP_RATE:
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g_value_set_double (value, src->rate);
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break;
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case PROP_APPLIED_RATE:
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g_value_set_double (value, src->applied_rate);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GstPadProbeReturn
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gst_push_file_src_ghostpad_buffer_probe (GstPad * pad, GstPadProbeInfo * info,
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GstPushFileSrc * src)
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{
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GstBuffer *buffer = GST_PAD_PROBE_INFO_BUFFER (info);
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if (src->time_segment && !src->seen_first_buffer) {
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GST_BUFFER_TIMESTAMP (buffer) = src->initial_timestamp;
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src->seen_first_buffer = TRUE;
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}
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return GST_PAD_PROBE_OK;
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}
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static GstPadProbeReturn
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gst_push_file_src_ghostpad_event_probe (GstPad * pad, GstPadProbeInfo * info,
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GstPushFileSrc * src)
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{
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GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEGMENT:
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{
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if (src->time_segment) {
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GstSegment segment;
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GstEvent *replacement;
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GST_DEBUG_OBJECT (src, "Replacing outgoing segment with TIME SEGMENT");
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gst_segment_init (&segment, GST_FORMAT_TIME);
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segment.start = src->start_time;
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segment.time = src->stream_time;
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segment.rate = src->rate;
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segment.applied_rate = src->applied_rate;
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replacement = gst_event_new_segment (&segment);
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gst_event_unref (event);
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GST_PAD_PROBE_INFO_DATA (info) = replacement;
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}
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}
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default:
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break;
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}
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return GST_PAD_PROBE_OK;
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}
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static gboolean
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gst_push_file_src_ghostpad_event (GstPad * pad, GstObject * parent,
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GstEvent * event)
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{
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GstPushFileSrc *src = (GstPushFileSrc *) parent;
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gboolean ret;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEEK:
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if (src->time_segment) {
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/* When working in time we don't allow seeks */
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GST_DEBUG_OBJECT (src, "Refusing seek event in TIME mode");
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gst_event_unref (event);
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ret = FALSE;
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break;
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}
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/* PASSTHROUGH */
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default:
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ret = gst_pad_event_default (pad, parent, event);
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break;
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}
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return ret;
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}
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static gboolean
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gst_push_file_src_ghostpad_query (GstPad * pad, GstObject * parent,
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GstQuery * query)
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{
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GstPushFileSrc *src = (GstPushFileSrc *) parent;
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gboolean res;
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_SCHEDULING:
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gst_query_set_scheduling (query, GST_SCHEDULING_FLAG_SEEKABLE, 1, -1, 0);
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/* When working in time we don't allow seeks */
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if (src->time_segment)
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gst_query_set_scheduling (query, GST_SCHEDULING_FLAG_SEQUENTIAL, 1, -1,
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0);
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else
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gst_query_set_scheduling (query, GST_SCHEDULING_FLAG_SEEKABLE, 1, -1,
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0);
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gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH);
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res = TRUE;
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break;
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@ -123,6 +325,14 @@ gst_push_file_src_ghostpad_query (GstPad * pad, GstObject * parent,
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static void
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gst_push_file_src_init (GstPushFileSrc * src)
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{
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src->time_segment = DEFAULT_TIME_SEGMENT;
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src->stream_time = DEFAULT_STREAM_TIME;
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src->start_time = DEFAULT_START_TIME;
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src->initial_timestamp = DEFAULT_INITIAL_TIMESTAMP;
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src->rate = DEFAULT_RATE;
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src->applied_rate = DEFAULT_APPLIED_RATE;
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src->seen_first_buffer = FALSE;
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src->filesrc = gst_element_factory_make ("filesrc", "real-filesrc");
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if (src->filesrc) {
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GstPad *pad;
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@ -135,6 +345,15 @@ gst_push_file_src_init (GstPushFileSrc * src)
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* this and watch core bugginess (some pad stays in flushing state) */
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gst_pad_set_query_function (src->srcpad,
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GST_DEBUG_FUNCPTR (gst_push_file_src_ghostpad_query));
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gst_pad_set_event_function (src->srcpad,
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GST_DEBUG_FUNCPTR (gst_push_file_src_ghostpad_event));
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/* Add outgoing event probe to replace segment and buffer timestamp */
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gst_pad_add_probe (src->srcpad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
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(GstPadProbeCallback) gst_push_file_src_ghostpad_event_probe,
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src, NULL);
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gst_pad_add_probe (src->srcpad, GST_PAD_PROBE_TYPE_BUFFER,
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(GstPadProbeCallback) gst_push_file_src_ghostpad_buffer_probe,
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src, NULL);
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gst_element_add_pad (GST_ELEMENT (src), src->srcpad);
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gst_object_unref (pad);
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}
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@ -43,6 +43,14 @@ struct _GstPushFileSrc
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/*< private > */
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GstElement *filesrc;
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GstPad *srcpad;
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gboolean time_segment;
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gboolean seen_first_buffer;
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gint64 stream_time;
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gint64 start_time;
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guint64 initial_timestamp;
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gdouble rate;
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gdouble applied_rate;
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};
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struct _GstPushFileSrcClass
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