static GstCaps *
gst_decklink_video_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink);
GstCaps *mode_caps, *caps;
if (self->mode == GST_DECKLINK_MODE_AUTO
&& self->video_format == GST_DECKLINK_VIDEO_FORMAT_AUTO)
mode_caps = gst_decklink_mode_get_template_caps (FALSE);
else if (self->video_format == GST_DECKLINK_VIDEO_FORMAT_AUTO)
mode_caps = gst_decklink_mode_get_caps_all_formats (self->mode, FALSE);
else if (self->mode == GST_DECKLINK_MODE_AUTO)
mode_caps =
gst_decklink_pixel_format_get_caps (gst_decklink_pixel_format_from_type
(self->video_format), FALSE);
else
mode_caps =
gst_decklink_mode_get_caps (self->mode,
gst_decklink_pixel_format_from_type (self->video_format), FALSE);
mode_caps = gst_caps_make_writable (mode_caps);
/* For output we support any framerate and only really care about timestamps */
gst_caps_map_in_place (mode_caps, reset_framerate, NULL);
if (filter) {
caps =
gst_caps_intersect_full (filter, mode_caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (mode_caps);
} else {
caps = mode_caps;
}
return caps;
}
void
gst_decklink_video_sink_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (object);
switch (property_id) {
case PROP_MODE:
g_value_set_enum (value, self->mode);
break;
case PROP_DEVICE_NUMBER:
g_value_set_int (value, self->device_number);
break;
case PROP_VIDEO_FORMAT:
g_value_set_enum (value, self->video_format);
break;
case PROP_TIMECODE_FORMAT:
g_value_set_enum (value,
gst_decklink_timecode_format_to_enum (self->timecode_format));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gboolean
gst_decklink_video_sink_open (GstBaseSink * bsink)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink);
const GstDecklinkMode *mode;
GST_DEBUG_OBJECT (self, "Stopping");
self->output =
gst_decklink_acquire_nth_output (self->device_number,
GST_ELEMENT_CAST (self), FALSE);
if (!self->output) {
GST_ERROR_OBJECT (self, "Failed to acquire output");
return FALSE;
}
mode = gst_decklink_get_mode (self->mode);
g_assert (mode != NULL);
g_mutex_lock (&self->output->lock);
self->output->mode = mode;
self->output->start_scheduled_playback =
gst_decklink_video_sink_start_scheduled_playback;
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);
return TRUE;
}
static gboolean
gst_decklink_video_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink);
const GstDecklinkMode *mode;
HRESULT ret;
GST_DEBUG_OBJECT (self, "Setting caps %" GST_PTR_FORMAT, caps);
if (!gst_video_info_from_caps (&self->info, caps))
return FALSE;
self->output->output->SetScheduledFrameCompletionCallback (new
GStreamerVideoOutputCallback (self));
mode = gst_decklink_get_mode (self->mode);
g_assert (mode != NULL);
ret = self->output->output->EnableVideoOutput (mode->mode,
bmdVideoOutputFlagDefault);
if (ret != S_OK) {
GST_WARNING_OBJECT (self, "Failed to enable video output");
return FALSE;
}
g_mutex_lock (&self->output->lock);
self->output->mode = mode;
self->output->video_enabled = TRUE;
if (self->output->start_scheduled_playback)
self->output->start_scheduled_playback (self->output->videosink);
g_mutex_unlock (&self->output->lock);
return TRUE;
}
static GstClock *
gst_decklink_video_sink_provide_clock (GstElement * element)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (element);
if (!self->output)
return NULL;
return GST_CLOCK_CAST (gst_object_ref (self->output->clock));
}
static void
gst_decklink_video_sink_state_changed (GstElement * element,
GstState old_state, GstState new_state, GstState pending_state)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (element);
// Aka gst_element_lost_state()
if (old_state == GST_STATE_PAUSED &&
new_state == GST_STATE_PAUSED && pending_state == GST_STATE_PAUSED &&
GST_STATE_TARGET (element) == GST_STATE_PLAYING) {
gst_decklink_video_sink_stop_scheduled_playback (self);
}
}
static GstCaps *
gst_decklink_video_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink);
GstCaps *mode_caps, *caps;
mode_caps = gst_decklink_mode_get_caps (self->mode);
if (filter) {
caps =
gst_caps_intersect_full (filter, mode_caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (mode_caps);
} else {
caps = mode_caps;
}
return caps;
}
void
gst_decklink_video_sink_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (object);
switch (property_id) {
case PROP_MODE:
self->mode = (GstDecklinkModeEnum) g_value_get_enum (value);
break;
case PROP_DEVICE_NUMBER:
self->device_number = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_decklink_video_sink_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (object);
switch (property_id) {
case PROP_MODE:
self->mode = (GstDecklinkModeEnum) g_value_get_enum (value);
break;
case PROP_DEVICE_NUMBER:
self->device_number = g_value_get_int (value);
break;
case PROP_VIDEO_FORMAT:
self->video_format = (GstDecklinkVideoFormat) g_value_get_enum (value);
switch (self->video_format) {
case GST_DECKLINK_VIDEO_FORMAT_AUTO:
case GST_DECKLINK_VIDEO_FORMAT_8BIT_YUV:
case GST_DECKLINK_VIDEO_FORMAT_10BIT_YUV:
case GST_DECKLINK_VIDEO_FORMAT_8BIT_ARGB:
case GST_DECKLINK_VIDEO_FORMAT_8BIT_BGRA:
break;
default:
GST_ELEMENT_WARNING (GST_ELEMENT (self), CORE, NOT_IMPLEMENTED,
("Format %d not supported", self->video_format), (NULL));
break;
}
break;
case PROP_TIMECODE_FORMAT:
self->timecode_format =
gst_decklink_timecode_format_from_enum ((GstDecklinkTimecodeFormat)
g_value_get_enum (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gboolean
gst_decklink_video_sink_close (GstBaseSink * bsink)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink);
GST_DEBUG_OBJECT (self, "Closing");
if (self->output) {
g_mutex_lock (&self->output->lock);
self->output->mode = NULL;
self->output->video_enabled = FALSE;
if (self->output->start_scheduled_playback)
self->output->start_scheduled_playback (self->output->videosink);
g_mutex_unlock (&self->output->lock);
self->output->output->DisableVideoOutput ();
gst_decklink_release_nth_output (self->device_number,
GST_ELEMENT_CAST (self), FALSE);
self->output = NULL;
}
return TRUE;
}
static gboolean
gst_decklink_video_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink);
const GstDecklinkMode *mode;
HRESULT ret;
BMDVideoOutputFlags flags;
GST_DEBUG_OBJECT (self, "Setting caps %" GST_PTR_FORMAT, caps);
if (!gst_video_info_from_caps (&self->info, caps))
return FALSE;
self->output->output->SetScheduledFrameCompletionCallback (new
GStreamerVideoOutputCallback (self));
if (self->mode == GST_DECKLINK_MODE_AUTO) {
BMDPixelFormat f;
mode = gst_decklink_find_mode_and_format_for_caps (caps, &f);
if (mode == NULL) {
GST_WARNING_OBJECT (self,
"Failed to find compatible mode for caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
if (self->video_format != GST_DECKLINK_VIDEO_FORMAT_AUTO &&
gst_decklink_pixel_format_from_type (self->video_format) != f) {
GST_WARNING_OBJECT (self, "Failed to set pixel format to %d",
self->video_format);
return FALSE;
}
} else {
/* We don't have to give the format in EnableVideoOutput. Therefore,
* even if it's AUTO, we have it stored in self->info and set it in
* gst_decklink_video_sink_prepare */
mode = gst_decklink_get_mode (self->mode);
g_assert (mode != NULL);
};
/* The timecode_format itself is used when we embed the actual timecode data
* into the frame. Now we only need to know which of the two standards the
* timecode format will adhere to: VITC or RP188, and send the appropriate
* flag to EnableVideoOutput. The exact format is specified later.
*
* Note that this flag will have no effect in practice if the video stream
* does not contain timecode metadata.
*/
if (self->timecode_format == GST_DECKLINK_TIMECODE_FORMAT_VITC ||
self->timecode_format == GST_DECKLINK_TIMECODE_FORMAT_VITCFIELD2)
flags = bmdVideoOutputVITC;
else
flags = bmdVideoOutputRP188;
ret = self->output->output->EnableVideoOutput (mode->mode, flags);
if (ret != S_OK) {
GST_WARNING_OBJECT (self, "Failed to enable video output: 0x%08x", ret);
return FALSE;
}
g_mutex_lock (&self->output->lock);
self->output->mode = mode;
self->output->video_enabled = TRUE;
if (self->output->start_scheduled_playback)
self->output->start_scheduled_playback (self->output->videosink);
g_mutex_unlock (&self->output->lock);
return TRUE;
}
static GstFlowReturn
gst_decklink_video_sink_prepare (GstBaseSink * bsink, GstBuffer * buffer)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink);
GstVideoFrame vframe;
IDeckLinkMutableVideoFrame *frame;
guint8 *outdata, *indata;
GstFlowReturn flow_ret;
HRESULT ret;
GstClockTime timestamp, duration;
GstClockTime running_time, running_time_duration;
gint i;
GstClock *clock;
GST_DEBUG_OBJECT (self, "Preparing buffer %p", buffer);
// FIXME: Handle no timestamps
if (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
return GST_FLOW_ERROR;
}
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
if (duration == GST_CLOCK_TIME_NONE) {
duration =
gst_util_uint64_scale_int (GST_SECOND, self->info.fps_d,
self->info.fps_n);
}
running_time =
gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment,
GST_FORMAT_TIME, timestamp);
running_time_duration =
gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment,
GST_FORMAT_TIME, timestamp + duration) - running_time;
// FIXME: https://bugzilla.gnome.org/show_bug.cgi?id=742916
// We need to drop late buffers here immediately instead of
// potentially overflowing the internal queue of the hardware
clock = gst_element_get_clock (GST_ELEMENT_CAST (self));
if (clock) {
GstClockTime clock_running_time, base_time, clock_time, latency,
max_lateness;
base_time = gst_element_get_base_time (GST_ELEMENT_CAST (self));
clock_time = gst_clock_get_time (clock);
if (base_time != GST_CLOCK_TIME_NONE && clock_time != GST_CLOCK_TIME_NONE) {
clock_running_time = clock_time - base_time;
latency = gst_base_sink_get_latency (GST_BASE_SINK_CAST (self));
max_lateness = gst_base_sink_get_max_lateness (GST_BASE_SINK_CAST (self));
if (clock_running_time >
running_time + running_time_duration + latency + max_lateness) {
GST_DEBUG_OBJECT (self,
"Late buffer: %" GST_TIME_FORMAT " > %" GST_TIME_FORMAT,
GST_TIME_ARGS (clock_running_time),
GST_TIME_ARGS (running_time + running_time_duration));
if (self->last_render_time == GST_CLOCK_TIME_NONE
|| (self->last_render_time < clock_running_time
&& clock_running_time - self->last_render_time >= GST_SECOND)) {
GST_DEBUG_OBJECT (self,
"Rendering frame nonetheless because we had none for more than 1s");
running_time = clock_running_time;
running_time_duration = 0;
} else {
GST_WARNING_OBJECT (self, "Dropping frame");
gst_object_unref (clock);
return GST_FLOW_OK;
}
}
}
gst_object_unref (clock);
}
self->last_render_time = running_time;
ret = self->output->output->CreateVideoFrame (self->info.width,
self->info.height, self->info.stride[0], bmdFormat8BitYUV,
bmdFrameFlagDefault, &frame);
if (ret != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to create video frame: 0x%08x", ret));
return GST_FLOW_ERROR;
}
if (!gst_video_frame_map (&vframe, &self->info, buffer, GST_MAP_READ)) {
GST_ERROR_OBJECT (self, "Failed to map video frame");
flow_ret = GST_FLOW_ERROR;
goto out;
}
frame->GetBytes ((void **) &outdata);
indata = (guint8 *) GST_VIDEO_FRAME_PLANE_DATA (&vframe, 0);
for (i = 0; i < self->info.height; i++) {
memcpy (outdata, indata, GST_VIDEO_FRAME_WIDTH (&vframe) * 2);
indata += GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, 0);
outdata += frame->GetRowBytes ();
}
gst_video_frame_unmap (&vframe);
convert_to_internal_clock (self, &running_time, &running_time_duration);
GST_LOG_OBJECT (self, "Scheduling video frame %p at %" GST_TIME_FORMAT
" with duration %" GST_TIME_FORMAT, frame, GST_TIME_ARGS (running_time),
GST_TIME_ARGS (running_time_duration));
ret = self->output->output->ScheduleVideoFrame (frame,
running_time, running_time_duration, GST_SECOND);
if (ret != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to schedule frame: 0x%08x", ret));
flow_ret = GST_FLOW_ERROR;
goto out;
}
flow_ret = GST_FLOW_OK;
out:
frame->Release ();
return flow_ret;
}
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 void
gst_decklink_video_sink_start_scheduled_playback (GstElement * element)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (element);
GstClockTime start_time;
HRESULT res;
bool active;
if (self->output->video_enabled && (!self->output->audiosink
|| self->output->audio_enabled)
&& (GST_STATE (self) == GST_STATE_PLAYING
|| GST_STATE_PENDING (self) == GST_STATE_PLAYING)) {
GstClock *clock = NULL;
clock = gst_element_get_clock (element);
if (!clock) {
GST_ELEMENT_ERROR (self, STREAM, FAILED, (NULL),
("Scheduled playback supposed to start but we have no clock"));
return;
}
// Need to unlock to get the clock time
g_mutex_unlock (&self->output->lock);
// 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 (clock) - start_time;
// FIXME: This will probably not work
if (start_time == GST_CLOCK_TIME_NONE)
start_time = 0;
// Current times of internal and external clock when we go to
// playing. We need this to convert the pipeline running time
// to the running time of the hardware
//
// We can't use the normal base time for the external clock
// because we might go to PLAYING later than the pipeline
self->internal_base_time =
gst_clock_get_internal_time (self->output->clock);
self->external_base_time = gst_clock_get_internal_time (clock);
convert_to_internal_clock (self, &start_time, NULL);
g_mutex_lock (&self->output->lock);
// Check if someone else started in the meantime
if (self->output->started) {
gst_object_unref (clock);
return;
}
active = false;
self->output->output->IsScheduledPlaybackRunning (&active);
if (active) {
GST_DEBUG_OBJECT (self, "Stopping scheduled playback");
self->output->started = FALSE;
res = self->output->output->StopScheduledPlayback (0, 0, 0);
if (res != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to stop scheduled playback: 0x%08x", res));
gst_object_unref (clock);
return;
}
}
GST_DEBUG_OBJECT (self,
"Starting scheduled playback at %" GST_TIME_FORMAT,
GST_TIME_ARGS (start_time));
res =
self->output->output->StartScheduledPlayback (start_time,
GST_SECOND, 1.0);
if (res != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to start scheduled playback: 0x%08x", res));
gst_object_unref (clock);
return;
}
self->output->started = TRUE;
self->output->clock_restart = TRUE;
// Need to unlock to get the clock time
g_mutex_unlock (&self->output->lock);
// Sample the clocks again to get the most accurate values
// after we started scheduled playback
self->internal_base_time =
gst_clock_get_internal_time (self->output->clock);
self->external_base_time = gst_clock_get_internal_time (clock);
g_mutex_lock (&self->output->lock);
gst_object_unref (clock);
} else {
GST_DEBUG_OBJECT (self, "Not starting scheduled playback yet");
}
}
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 GstFlowReturn
gst_decklink_video_sink_prepare (GstBaseSink * bsink, GstBuffer * buffer)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink);
GstVideoFrame vframe;
IDeckLinkMutableVideoFrame *frame;
guint8 *outdata, *indata;
GstFlowReturn flow_ret;
HRESULT ret;
GstClockTime timestamp, duration;
GstClockTime running_time, running_time_duration;
GstClockTime latency, render_delay;
GstClockTimeDiff ts_offset;
gint i;
GstDecklinkVideoFormat caps_format;
BMDPixelFormat format;
gint bpp;
GstVideoTimeCodeMeta *tc_meta;
GST_DEBUG_OBJECT (self, "Preparing buffer %p", buffer);
// FIXME: Handle no timestamps
if (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
return GST_FLOW_ERROR;
}
caps_format = gst_decklink_type_from_video_format (self->info.finfo->format);
format = gst_decklink_pixel_format_from_type (caps_format);
bpp = gst_decklink_bpp_from_type (caps_format);
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
if (duration == GST_CLOCK_TIME_NONE) {
duration =
gst_util_uint64_scale_int (GST_SECOND, self->info.fps_d,
self->info.fps_n);
}
running_time =
gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment,
GST_FORMAT_TIME, timestamp);
running_time_duration =
gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment,
GST_FORMAT_TIME, timestamp + duration) - running_time;
/* See gst_base_sink_adjust_time() */
latency = gst_base_sink_get_latency (bsink);
render_delay = gst_base_sink_get_render_delay (bsink);
ts_offset = gst_base_sink_get_ts_offset (bsink);
running_time += latency;
if (ts_offset < 0) {
ts_offset = -ts_offset;
if ((GstClockTime) ts_offset < running_time)
running_time -= ts_offset;
else
running_time = 0;
} else {
running_time += ts_offset;
}
if (running_time > render_delay)
running_time -= render_delay;
else
running_time = 0;
ret = self->output->output->CreateVideoFrame (self->info.width,
self->info.height, self->info.stride[0], format, bmdFrameFlagDefault,
&frame);
if (ret != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to create video frame: 0x%08x", ret));
return GST_FLOW_ERROR;
}
if (!gst_video_frame_map (&vframe, &self->info, buffer, GST_MAP_READ)) {
GST_ERROR_OBJECT (self, "Failed to map video frame");
flow_ret = GST_FLOW_ERROR;
goto out;
}
frame->GetBytes ((void **) &outdata);
indata = (guint8 *) GST_VIDEO_FRAME_PLANE_DATA (&vframe, 0);
for (i = 0; i < self->info.height; i++) {
memcpy (outdata, indata, GST_VIDEO_FRAME_WIDTH (&vframe) * bpp);
indata += GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, 0);
outdata += frame->GetRowBytes ();
}
gst_video_frame_unmap (&vframe);
tc_meta = gst_buffer_get_video_time_code_meta (buffer);
if (tc_meta) {
BMDTimecodeFlags bflags = (BMDTimecodeFlags) 0;
gchar *tc_str;
if (((GstVideoTimeCodeFlags) (tc_meta->tc.
config.flags)) & GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME)
bflags = (BMDTimecodeFlags) (bflags | bmdTimecodeIsDropFrame);
else
bflags = (BMDTimecodeFlags) (bflags | bmdTimecodeFlagDefault);
if (tc_meta->tc.field_count == 2)
bflags = (BMDTimecodeFlags) (bflags | bmdTimecodeFieldMark);
tc_str = gst_video_time_code_to_string (&tc_meta->tc);
ret = frame->SetTimecodeFromComponents (self->timecode_format,
(uint8_t) tc_meta->tc.hours,
(uint8_t) tc_meta->tc.minutes,
(uint8_t) tc_meta->tc.seconds, (uint8_t) tc_meta->tc.frames, bflags);
if (ret != S_OK) {
GST_ERROR_OBJECT (self,
"Failed to set timecode %s to video frame: 0x%08x", tc_str, ret);
flow_ret = GST_FLOW_ERROR;
g_free (tc_str);
goto out;
}
GST_DEBUG_OBJECT (self, "Set frame timecode to %s", tc_str);
g_free (tc_str);
}
convert_to_internal_clock (self, &running_time, &running_time_duration);
GST_LOG_OBJECT (self, "Scheduling video frame %p at %" GST_TIME_FORMAT
" with duration %" GST_TIME_FORMAT, frame, GST_TIME_ARGS (running_time),
GST_TIME_ARGS (running_time_duration));
ret = self->output->output->ScheduleVideoFrame (frame,
running_time, running_time_duration, GST_SECOND);
if (ret != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to schedule frame: 0x%08x", ret));
flow_ret = GST_FLOW_ERROR;
goto out;
}
flow_ret = GST_FLOW_OK;
out:
frame->Release ();
return flow_ret;
}
GStreamerVideoOutputCallback (GstDecklinkVideoSink * sink)
:IDeckLinkVideoOutputCallback (), m_refcount (1)
{
m_sink = GST_DECKLINK_VIDEO_SINK_CAST (gst_object_ref (sink));
g_mutex_init (&m_mutex);
}
