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rpicamsrc: Add force-key-unit event support

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This commit is contained in:
Vivia Nikolaidou 2014-10-09 20:38:41 +00:00 committed by Tim-Philipp Müller
parent 244091bb5e
commit d226968275
3 changed files with 72 additions and 0 deletions
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15
sys/rpicamsrc/RaspiCapture.c
View file

@ -752,6 +752,21 @@ static void destroy_camera_component(RASPIVID_STATE *state)
}
}
gboolean raspi_capture_request_i_frame(RASPIVID_STATE *state)
{
MMAL_PORT_T *encoder_output = NULL;
MMAL_STATUS_T status;
MMAL_PARAMETER_BOOLEAN_T param = {{ MMAL_PARAMETER_VIDEO_REQUEST_I_FRAME, sizeof(param)}, 1};
encoder_output = state->encoder_component->output[0];
status = mmal_port_parameter_set(encoder_output, &param.hdr);
if (status != MMAL_SUCCESS)
{
vcos_log_error("Unable to request I-frame");
return FALSE;
}
return TRUE;
}
/**
* Create the encoder component, set up its ports
*

1
sys/rpicamsrc/RaspiCapture.h
View file

@ -92,6 +92,7 @@ gboolean raspi_capture_start(RASPIVID_STATE *state);
GstFlowReturn raspi_capture_fill_buffer(RASPIVID_STATE *state, GstBuffer **buf);
void raspi_capture_stop(RASPIVID_STATE *state);
void raspi_capture_free(RASPIVID_STATE *state);
gboolean raspi_capture_request_i_frame(RASPIVID_STATE *state);
G_END_DECLS

56
sys/rpicamsrc/gstrpicamsrc.c
View file

@ -181,6 +181,8 @@ static GstFlowReturn gst_rpi_cam_src_create (GstPushSrc * parent,
static GstCaps *gst_rpi_cam_src_get_caps (GstBaseSrc * src, GstCaps * filter);
static gboolean gst_rpi_cam_src_set_caps (GstBaseSrc * src, GstCaps * caps);
static GstCaps *gst_rpi_cam_src_fixate (GstBaseSrc * basesrc, GstCaps * caps);
static gboolean gst_rpi_cam_src_event (GstBaseSrc * src, GstEvent * event);
static gboolean gst_rpi_cam_src_send_event (GstElement * element, GstEvent * event);
static void
gst_rpi_cam_src_class_init (GstRpiCamSrcClass * klass)
@ -312,6 +314,8 @@ gst_rpi_cam_src_class_init (GstRpiCamSrcClass * klass)
basesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_rpi_cam_src_get_caps);
basesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_rpi_cam_src_set_caps);
basesrc_class->fixate = GST_DEBUG_FUNCPTR (gst_rpi_cam_src_fixate);
basesrc_class->event = GST_DEBUG_FUNCPTR (gst_rpi_cam_src_event);
gstelement_class->send_event = GST_DEBUG_FUNCPTR (gst_rpi_cam_src_send_event);
pushsrc_class->create = GST_DEBUG_FUNCPTR (gst_rpi_cam_src_create);
raspicapture_init ();
@ -532,6 +536,58 @@ gst_rpi_cam_src_stop (GstBaseSrc * parent)
return TRUE;
}
static gboolean
gst_rpi_cam_src_send_event (GstElement * parent, GstEvent * event)
{
GstRpiCamSrc *src = GST_RPICAMSRC (parent);
gboolean ret;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_DOWNSTREAM:
case GST_EVENT_CUSTOM_UPSTREAM:
if (gst_video_event_is_force_key_unit (event)) {
if (src->started) {
ret = raspi_capture_request_i_frame (src->capture_state);
} else {
ret = FALSE;
}
gst_event_unref (event);
} else {
ret = GST_ELEMENT_CLASS (parent_class)->send_event(parent, event);
}
break;
default:
ret = GST_ELEMENT_CLASS (parent_class)->send_event(parent, event);
break;
}
return ret;
}
static gboolean
gst_rpi_cam_src_event (GstBaseSrc * parent, GstEvent * event)
{
GstRpiCamSrc *src = GST_RPICAMSRC (parent);
gboolean ret;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_DOWNSTREAM:
case GST_EVENT_CUSTOM_UPSTREAM:
if (gst_video_event_is_force_key_unit (event)) {
if (src->started) {
ret = raspi_capture_request_i_frame (src->capture_state);
} else {
ret = FALSE;
}
gst_event_unref (event);
} else {
ret = GST_BASE_SRC_CLASS (parent_class)->event(parent, event);
}
break;
default:
ret = GST_BASE_SRC_CLASS (parent_class)->event(parent, event);
break;
}
return ret;
}
static GstCaps *
gst_rpi_cam_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
{