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gst/videotestsrc/gstvideotestsrc.c: Implement live source mode and unlocking.
Original commit message from CVS: 2005-09-28 Andy Wingo <wingo@pobox.com> * gst/videotestsrc/gstvideotestsrc.c: Implement live source mode and unlocking.
This commit is contained in:
Andy Wingo
parent
d1c3b07399
commit
f2fe41400a
3 changed files with 95 additions and 28 deletions
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@ -1,5 +1,8 @@
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2005-09-28 Andy Wingo <wingo@pobox.com>
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* gst/videotestsrc/gstvideotestsrc.c: Implement live source mode
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and unlocking.
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* gst/sine/gstsinesrc.c (gst_sinesrc_unlock): Actually implement
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unlocking.
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@ -59,6 +59,7 @@ enum
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PROP_0,
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PROP_PATTERN,
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PROP_TIMESTAMP_OFFSET,
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PROP_IS_LIVE
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/* FILL ME */
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};
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@ -80,6 +81,7 @@ static gboolean gst_videotestsrc_negotiate (GstBaseSrc * bsrc);
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static void gst_videotestsrc_get_times (GstBaseSrc * src, GstBuffer * buffer,
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GstClockTime * start, GstClockTime * end);
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static gboolean gst_videotestsrc_event (GstBaseSrc * bsrc, GstEvent * event);
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static gboolean gst_videotestsrc_unlock (GstBaseSrc * bsrc);
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static GstFlowReturn gst_videotestsrc_create (GstPushSrc * psrc,
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GstBuffer ** buffer);
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@ -139,25 +141,30 @@ gst_videotestsrc_class_init (GstVideoTestSrcClass * klass)
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"Timestamp offset",
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"An offset added to timestamps set on buffers (in ns)", G_MININT64,
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G_MAXINT64, 0, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_IS_LIVE,
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g_param_spec_boolean ("is-live", "Is Live",
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"Whether to act as a live source", FALSE, G_PARAM_READWRITE));
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gstbasesrc_class->get_caps = gst_videotestsrc_getcaps;
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gstbasesrc_class->set_caps = gst_videotestsrc_setcaps;
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gstbasesrc_class->negotiate = gst_videotestsrc_negotiate;
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gstbasesrc_class->get_times = gst_videotestsrc_get_times;
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gstbasesrc_class->event = gst_videotestsrc_event;
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gstbasesrc_class->unlock = gst_videotestsrc_unlock;
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gstpushsrc_class->create = gst_videotestsrc_create;
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}
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static void
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gst_videotestsrc_init (GstVideoTestSrc * videotestsrc,
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GstVideoTestSrcClass * g_class)
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gst_videotestsrc_init (GstVideoTestSrc * src, GstVideoTestSrcClass * g_class)
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{
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gst_videotestsrc_set_pattern (videotestsrc, GST_VIDEOTESTSRC_SMPTE);
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gst_videotestsrc_set_pattern (src, GST_VIDEOTESTSRC_SMPTE);
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videotestsrc->segment_start_frame = -1;
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videotestsrc->segment_end_frame = -1;
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videotestsrc->timestamp_offset = 0;
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src->segment_start_frame = -1;
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src->segment_end_frame = -1;
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src->timestamp_offset = 0;
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gst_base_src_set_live (GST_BASE_SRC (src), FALSE);
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}
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static void
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@ -186,14 +193,17 @@ static void
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gst_videotestsrc_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstVideoTestSrc *videotestsrc = GST_VIDEOTESTSRC (object);
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GstVideoTestSrc *src = GST_VIDEOTESTSRC (object);
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switch (prop_id) {
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case PROP_PATTERN:
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gst_videotestsrc_set_pattern (videotestsrc, g_value_get_enum (value));
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gst_videotestsrc_set_pattern (src, g_value_get_enum (value));
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break;
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case PROP_TIMESTAMP_OFFSET:
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videotestsrc->timestamp_offset = g_value_get_int64 (value);
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src->timestamp_offset = g_value_get_int64 (value);
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break;
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case PROP_IS_LIVE:
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gst_base_src_set_live (GST_BASE_SRC (src), g_value_get_boolean (value));
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break;
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default:
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break;
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@ -204,14 +214,17 @@ static void
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gst_videotestsrc_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstVideoTestSrc *videotestsrc = GST_VIDEOTESTSRC (object);
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GstVideoTestSrc *src = GST_VIDEOTESTSRC (object);
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switch (prop_id) {
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case PROP_PATTERN:
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g_value_set_enum (value, videotestsrc->pattern_type);
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g_value_set_enum (value, src->pattern_type);
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break;
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case PROP_TIMESTAMP_OFFSET:
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g_value_set_int64 (value, videotestsrc->timestamp_offset);
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g_value_set_int64 (value, src->timestamp_offset);
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break;
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case PROP_IS_LIVE:
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g_value_set_boolean (value, gst_base_src_is_live (GST_BASE_SRC (src)));
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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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@ -394,27 +407,73 @@ gst_videotestsrc_event (GstBaseSrc * bsrc, GstEvent * event)
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return res;
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}
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/* with STREAM_LOCK */
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static GstClockReturn
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gst_videotestsrc_wait (GstVideoTestSrc * src, GstClockTime time)
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{
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GstClockReturn ret;
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GstClockTime base_time;
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GST_LOCK (src);
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/* clock_id should be NULL outside of this function */
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g_assert (src->clock_id == NULL);
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g_assert (GST_CLOCK_TIME_IS_VALID (time));
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base_time = GST_ELEMENT (src)->base_time;
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src->clock_id = gst_clock_new_single_shot_id (GST_ELEMENT_CLOCK (src),
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time + base_time);
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GST_UNLOCK (src);
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ret = gst_clock_id_wait (src->clock_id, NULL);
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GST_LOCK (src);
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gst_clock_id_unref (src->clock_id);
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src->clock_id = NULL;
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GST_UNLOCK (src);
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return ret;
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}
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static gboolean
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gst_videotestsrc_unlock (GstBaseSrc * bsrc)
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{
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GstVideoTestSrc *src = GST_VIDEOTESTSRC (bsrc);
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GST_LOCK (src);
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if (src->clock_id)
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gst_clock_id_unschedule (src->clock_id);
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GST_UNLOCK (src);
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return TRUE;
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}
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static GstFlowReturn
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gst_videotestsrc_create (GstPushSrc * psrc, GstBuffer ** buffer)
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{
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GstVideoTestSrc *videotestsrc;
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GstVideoTestSrc *src;
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gulong newsize;
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GstBuffer *outbuf;
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GstFlowReturn res;
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videotestsrc = GST_VIDEOTESTSRC (psrc);
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src = GST_VIDEOTESTSRC (psrc);
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if (videotestsrc->fourcc == NULL)
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if (src->fourcc == NULL)
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goto not_negotiated;
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newsize = gst_videotestsrc_get_size (videotestsrc, videotestsrc->width,
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videotestsrc->height);
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newsize = gst_videotestsrc_get_size (src, src->width, src->height);
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g_return_val_if_fail (newsize > 0, GST_FLOW_ERROR);
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GST_LOG_OBJECT (videotestsrc, "creating buffer of %ld bytes for %dx%d image",
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newsize, videotestsrc->width, videotestsrc->height);
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GST_LOG_OBJECT (src, "creating buffer of %ld bytes for %dx%d image",
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newsize, src->width, src->height);
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if (gst_base_src_is_live (GST_BASE_SRC (src))) {
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GstClockReturn ret;
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ret =
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gst_videotestsrc_wait (src, src->running_time + src->timestamp_offset);
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if (ret == GST_CLOCK_UNSCHEDULED)
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goto unscheduled;
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}
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#ifdef USE_PEER_BUFFERALLOC
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res =
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gst_pad_alloc_buffer (GST_BASE_SRC_PAD (psrc), GST_BUFFER_OFFSET_NONE,
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@ -430,23 +489,27 @@ gst_videotestsrc_create (GstPushSrc * psrc, GstBuffer ** buffer)
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gst_buffer_set_caps (outbuf, GST_PAD_CAPS (GST_BASE_SRC_PAD (psrc)));
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#endif
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videotestsrc->make_image (videotestsrc, (void *) GST_BUFFER_DATA (outbuf),
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videotestsrc->width, videotestsrc->height);
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src->make_image (src, (void *) GST_BUFFER_DATA (outbuf),
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src->width, src->height);
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GST_BUFFER_TIMESTAMP (outbuf) = videotestsrc->timestamp_offset +
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videotestsrc->running_time;
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GST_BUFFER_DURATION (outbuf) = GST_SECOND / (double) videotestsrc->rate;
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GST_BUFFER_TIMESTAMP (outbuf) = src->timestamp_offset + src->running_time;
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GST_BUFFER_DURATION (outbuf) = GST_SECOND / (double) src->rate;
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videotestsrc->n_frames++;
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videotestsrc->running_time += GST_BUFFER_DURATION (outbuf);
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src->n_frames++;
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src->running_time += GST_BUFFER_DURATION (outbuf);
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*buffer = outbuf;
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return GST_FLOW_OK;
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unscheduled:
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{
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GST_DEBUG_OBJECT (src, "Unscheduled while waiting for clock");
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return GST_FLOW_WRONG_STATE;
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}
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not_negotiated:
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{
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GST_ELEMENT_ERROR (videotestsrc, CORE, NEGOTIATION, (NULL),
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GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL),
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("format wasn't negotiated before get function"));
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return GST_FLOW_NOT_NEGOTIATED;
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}
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@ -67,6 +67,7 @@ struct _GstVideoTestSrc {
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gint64 segment_start_frame;
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gint64 segment_end_frame;
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gboolean segment;
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GstClockID clock_id;
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void (*make_image) (GstVideoTestSrc *v, unsigned char *dest, int w, int h);
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};
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