static GstStateChangeReturn
gst_dv1394_src_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstDV1394Src *src = GST_DV1394SRC (element);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
gst_element_post_message (element,
gst_message_new_clock_lost (GST_OBJECT_CAST (element),
GST_CLOCK_CAST (src->provided_clock)));
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
gst_element_post_message (element,
gst_message_new_clock_provide (GST_OBJECT_CAST (element),
GST_CLOCK_CAST (src->provided_clock), TRUE));
break;
default:
break;
}
return ret;
}
static VALUE
clock_provide_initialize(VALUE self, VALUE src, VALUE clock, VALUE ready)
{
G_INITIALIZE(self, gst_message_new_clock_provide(RVAL2GST_OBJ(src),
RVAL2GST_CLOCK(clock),
RVAL2CBOOL(ready)));
return Qnil;
}
static GstStateChangeReturn
gst_decklink_video_src_change_state (GstElement * element,
GstStateChange transition)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_decklink_video_src_open (self)) {
ret = GST_STATE_CHANGE_FAILURE;
goto out;
}
if (self->mode == GST_DECKLINK_MODE_AUTO &&
self->video_format != GST_DECKLINK_VIDEO_FORMAT_AUTO) {
GST_WARNING_OBJECT (self, "Warning: mode=auto and format!=auto may \
not work");
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
g_mutex_lock (&self->input->lock);
self->input->clock_start_time = GST_CLOCK_TIME_NONE;
self->input->clock_epoch += self->input->clock_last_time;
self->input->clock_last_time = 0;
self->input->clock_offset = 0;
g_mutex_unlock (&self->input->lock);
gst_element_post_message (element,
gst_message_new_clock_provide (GST_OBJECT_CAST (element),
self->input->clock, TRUE));
self->flushing = FALSE;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:{
GstClock *clock;
clock = gst_element_get_clock (GST_ELEMENT_CAST (self));
if (clock) {
if (clock != self->input->clock) {
gst_clock_set_master (self->input->clock, clock);
}
gst_object_unref (clock);
} else {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Need a clock to go to PLAYING"));
ret = GST_STATE_CHANGE_FAILURE;
}
break;
}
default:
break;
}
static GstStateChangeReturn
gst_decklink_video_sink_change_state (GstElement * element,
GstStateChange transition)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
g_mutex_lock (&self->output->lock);
self->output->clock_start_time = GST_CLOCK_TIME_NONE;
self->output->clock_epoch += self->output->clock_last_time;
self->output->clock_last_time = 0;
self->output->clock_offset = 0;
g_mutex_unlock (&self->output->lock);
gst_element_post_message (element,
gst_message_new_clock_provide (GST_OBJECT_CAST (element),
self->output->clock, TRUE));
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:{
GstClock *clock, *audio_clock;
clock = gst_element_get_clock (GST_ELEMENT_CAST (self));
if (clock) {
audio_clock = gst_decklink_output_get_audio_clock (self->output);
if (clock && clock != self->output->clock && clock != audio_clock) {
gst_clock_set_master (self->output->clock, clock);
}
gst_object_unref (clock);
if (audio_clock)
gst_object_unref (audio_clock);
} else {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Need a clock to go to PLAYING"));
ret = GST_STATE_CHANGE_FAILURE;
}
break;
}
default:
break;
}
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_element_post_message (element,
gst_message_new_clock_lost (GST_OBJECT_CAST (element),
self->output->clock));
gst_clock_set_master (self->output->clock, NULL);
// Reset calibration to make the clock reusable next time we use it
gst_clock_set_calibration (self->output->clock, 0, 0, 1, 1);
g_mutex_lock (&self->output->lock);
self->output->clock_start_time = GST_CLOCK_TIME_NONE;
self->output->clock_epoch += self->output->clock_last_time;
self->output->clock_last_time = 0;
self->output->clock_offset = 0;
g_mutex_unlock (&self->output->lock);
gst_decklink_video_sink_stop (self);
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:{
if (gst_decklink_video_sink_stop_scheduled_playback (self) ==
GST_STATE_CHANGE_FAILURE)
ret = GST_STATE_CHANGE_FAILURE;
break;
}
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:{
g_mutex_lock (&self->output->lock);
if (self->output->start_scheduled_playback)
self->output->start_scheduled_playback (self->output->videosink);
g_mutex_unlock (&self->output->lock);
break;
}
default:
break;
}
return ret;
}
static GstStateChangeReturn
gst_decklink_video_sink_change_state (GstElement * element,
GstStateChange transition)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
g_mutex_lock (&self->output->lock);
self->output->clock_start_time = GST_CLOCK_TIME_NONE;
self->output->clock_last_time = 0;
self->output->clock_offset = 0;
g_mutex_unlock (&self->output->lock);
gst_element_post_message (element,
gst_message_new_clock_provide (GST_OBJECT_CAST (element),
self->output->clock, TRUE));
self->last_render_time = GST_CLOCK_TIME_NONE;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:{
GstClock *clock, *audio_clock;
clock = gst_element_get_clock (GST_ELEMENT_CAST (self));
audio_clock = gst_decklink_output_get_audio_clock (self->output);
if (clock && clock != self->output->clock && clock != audio_clock) {
gst_clock_set_master (self->output->clock, clock);
}
if (clock)
gst_object_unref (clock);
if (audio_clock)
gst_object_unref (audio_clock);
break;
}
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_element_post_message (element,
gst_message_new_clock_lost (GST_OBJECT_CAST (element),
self->output->clock));
gst_clock_set_master (self->output->clock, NULL);
g_mutex_lock (&self->output->lock);
self->output->clock_start_time = GST_CLOCK_TIME_NONE;
self->output->clock_last_time = 0;
self->output->clock_offset = 0;
g_mutex_unlock (&self->output->lock);
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:{
GstClockTime start_time;
HRESULT res;
// FIXME: start time is the same for the complete pipeline,
// but what we need here is the start time of this element!
start_time = gst_element_get_base_time (element);
if (start_time != GST_CLOCK_TIME_NONE)
start_time = gst_clock_get_time (GST_ELEMENT_CLOCK (self)) - start_time;
// FIXME: This will probably not work
if (start_time == GST_CLOCK_TIME_NONE)
start_time = 0;
convert_to_internal_clock (self, &start_time, NULL);
// The start time is now the running time when we stopped
// playback
GST_DEBUG_OBJECT (self,
"Stopping scheduled playback at %" GST_TIME_FORMAT,
GST_TIME_ARGS (start_time));
g_mutex_lock (&self->output->lock);
self->output->started = FALSE;
g_mutex_unlock (&self->output->lock);
res =
self->output->output->StopScheduledPlayback (start_time, 0,
GST_SECOND);
if (res != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to stop scheduled playback: 0x%08x", res));
ret = GST_STATE_CHANGE_FAILURE;
}
self->internal_base_time = GST_CLOCK_TIME_NONE;
self->external_base_time = GST_CLOCK_TIME_NONE;
break;
}
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:{
g_mutex_lock (&self->output->lock);
if (self->output->start_scheduled_playback)
self->output->start_scheduled_playback (self->output->videosink);
g_mutex_unlock (&self->output->lock);
break;
}
default:
break;
}
return ret;
}
static GstStateChangeReturn
gst_pulsesrc_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstPulseSrc *this = GST_PULSESRC_CAST (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!(this->mainloop = pa_threaded_mainloop_new ()))
goto mainloop_failed;
if (pa_threaded_mainloop_start (this->mainloop) < 0) {
pa_threaded_mainloop_free (this->mainloop);
this->mainloop = NULL;
goto mainloop_start_failed;
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_element_post_message (element,
gst_message_new_clock_provide (GST_OBJECT_CAST (element),
GST_AUDIO_BASE_SRC (this)->clock, TRUE));
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
/* uncork and start recording */
gst_pulsesrc_play (this);
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
/* stop recording ASAP by corking */
pa_threaded_mainloop_lock (this->mainloop);
GST_DEBUG_OBJECT (this, "corking");
gst_pulsesrc_set_corked (this, TRUE, FALSE);
pa_threaded_mainloop_unlock (this->mainloop);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
/* now make sure we get out of the _read method */
gst_pulsesrc_pause (this);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
if (this->mainloop)
pa_threaded_mainloop_stop (this->mainloop);
gst_pulsesrc_destroy_context (this);
if (this->mainloop) {
pa_threaded_mainloop_free (this->mainloop);
this->mainloop = NULL;
}
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
/* format_lost is reset in release() in baseaudiosink */
gst_element_post_message (element,
gst_message_new_clock_lost (GST_OBJECT_CAST (element),
GST_AUDIO_BASE_SRC (this)->clock));
break;
default:
break;
}
return ret;
/* ERRORS */
mainloop_failed:
{
GST_ELEMENT_ERROR (this, RESOURCE, FAILED,
("pa_threaded_mainloop_new() failed"), (NULL));
return GST_STATE_CHANGE_FAILURE;
}
mainloop_start_failed:
{
GST_ELEMENT_ERROR (this, RESOURCE, FAILED,
("pa_threaded_mainloop_start() failed"), (NULL));
return GST_STATE_CHANGE_FAILURE;
}
}
static GstStateChangeReturn
gst_decklink_video_src_change_state (GstElement * element,
GstStateChange transition)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_decklink_video_src_open (self)) {
ret = GST_STATE_CHANGE_FAILURE;
goto out;
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
g_mutex_lock (&self->input->lock);
self->input->clock_start_time = GST_CLOCK_TIME_NONE;
self->input->clock_last_time = 0;
self->input->clock_offset = 0;
g_mutex_unlock (&self->input->lock);
gst_element_post_message (element,
gst_message_new_clock_provide (GST_OBJECT_CAST (element),
self->input->clock, TRUE));
self->flushing = FALSE;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:{
GstClock *clock;
clock = gst_element_get_clock (GST_ELEMENT_CAST (self));
if (clock && clock != self->input->clock) {
gst_clock_set_master (self->input->clock, clock);
}
if (clock)
gst_object_unref (clock);
break;
}
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_element_post_message (element,
gst_message_new_clock_lost (GST_OBJECT_CAST (element),
self->input->clock));
gst_clock_set_master (self->input->clock, NULL);
// Reset calibration to make the clock reusable next time we use it
gst_clock_set_calibration (self->input->clock, 0, 0, 1, 1);
g_mutex_lock (&self->input->lock);
self->input->clock_start_time = GST_CLOCK_TIME_NONE;
self->input->clock_last_time = 0;
self->input->clock_offset = 0;
g_mutex_unlock (&self->input->lock);
g_queue_foreach (&self->current_frames, (GFunc) capture_frame_free, NULL);
g_queue_clear (&self->current_frames);
self->caps_mode = GST_DECKLINK_MODE_AUTO;
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:{
HRESULT res;
GST_DEBUG_OBJECT (self, "Stopping streams");
g_mutex_lock (&self->input->lock);
self->input->started = FALSE;
g_mutex_unlock (&self->input->lock);
res = self->input->input->StopStreams ();
if (res != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to stop streams: 0x%08x", res));
ret = GST_STATE_CHANGE_FAILURE;
}
self->internal_base_time = GST_CLOCK_TIME_NONE;
self->external_base_time = GST_CLOCK_TIME_NONE;
break;
}
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:{
g_mutex_lock (&self->input->lock);
if (self->input->start_streams)
self->input->start_streams (self->input->videosrc);
g_mutex_unlock (&self->input->lock);
break;
}
case GST_STATE_CHANGE_READY_TO_NULL:
gst_decklink_video_src_close (self);
break;
default:
break;
}
out:
return ret;
}
static GstStateChangeReturn
gst_base_audio_src_change_state (GstElement * element,
GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstBaseAudioSrc *src = GST_BASE_AUDIO_SRC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
GST_DEBUG_OBJECT (src, "NULL->READY");
GST_OBJECT_LOCK (src);
if (src->ringbuffer == NULL) {
gst_audio_clock_reset (GST_AUDIO_CLOCK (src->clock), 0);
src->ringbuffer = gst_base_audio_src_create_ringbuffer (src);
}
GST_OBJECT_UNLOCK (src);
if (!gst_ring_buffer_open_device (src->ringbuffer))
goto open_failed;
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
GST_DEBUG_OBJECT (src, "READY->PAUSED");
src->next_sample = -1;
gst_ring_buffer_set_flushing (src->ringbuffer, FALSE);
gst_ring_buffer_may_start (src->ringbuffer, FALSE);
/* Only post clock-provide messages if this is the clock that
* we've created. If the subclass has overriden it the subclass
* should post this messages whenever necessary */
if (src->clock && GST_IS_AUDIO_CLOCK (src->clock) &&
GST_AUDIO_CLOCK_CAST (src->clock)->func ==
(GstAudioClockGetTimeFunc) gst_base_audio_src_get_time)
gst_element_post_message (element,
gst_message_new_clock_provide (GST_OBJECT_CAST (element),
src->clock, TRUE));
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
GST_DEBUG_OBJECT (src, "PAUSED->PLAYING");
gst_ring_buffer_may_start (src->ringbuffer, TRUE);
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
GST_DEBUG_OBJECT (src, "PLAYING->PAUSED");
gst_ring_buffer_may_start (src->ringbuffer, FALSE);
gst_ring_buffer_pause (src->ringbuffer);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
GST_DEBUG_OBJECT (src, "PAUSED->READY");
/* Only post clock-lost messages if this is the clock that
* we've created. If the subclass has overriden it the subclass
* should post this messages whenever necessary */
if (src->clock && GST_IS_AUDIO_CLOCK (src->clock) &&
GST_AUDIO_CLOCK_CAST (src->clock)->func ==
(GstAudioClockGetTimeFunc) gst_base_audio_src_get_time)
gst_element_post_message (element,
gst_message_new_clock_lost (GST_OBJECT_CAST (element), src->clock));
gst_ring_buffer_set_flushing (src->ringbuffer, TRUE);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
GST_DEBUG_OBJECT (src, "PAUSED->READY");
gst_ring_buffer_release (src->ringbuffer);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
GST_DEBUG_OBJECT (src, "READY->NULL");
gst_ring_buffer_close_device (src->ringbuffer);
GST_OBJECT_LOCK (src);
gst_object_unparent (GST_OBJECT_CAST (src->ringbuffer));
src->ringbuffer = NULL;
GST_OBJECT_UNLOCK (src);
break;
default:
break;
}
return ret;
/* ERRORS */
open_failed:
{
/* subclass must post a meaningfull error message */
GST_DEBUG_OBJECT (src, "open failed");
return GST_STATE_CHANGE_FAILURE;
}
}