static gboolean
gst_wrapper_camera_bin_src_set_mode (GstBaseCameraSrc * bcamsrc,
GstCameraBinMode mode)
{
GstPhotography *photography = gst_base_camera_src_get_photography (bcamsrc);
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (bcamsrc);
self->mode = mode;
if (self->output_selector) {
if (mode == MODE_IMAGE) {
g_object_set (self->output_selector, "active-pad", self->outsel_imgpad,
NULL);
} else {
g_object_set (self->output_selector, "active-pad", self->outsel_vidpad,
NULL);
}
}
if (photography) {
if (g_object_class_find_property (G_OBJECT_GET_CLASS (photography),
"capture-mode")) {
g_object_set (G_OBJECT (photography), "capture-mode", mode, NULL);
}
} else {
gst_wrapper_camera_bin_reset_video_src_caps (self, NULL);
}
return TRUE;
}
static GstStateChangeReturn
gst_wrapper_camera_bin_src_change_state (GstElement * element,
GstStateChange trans)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (element);
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, trans);
if (ret == GST_STATE_CHANGE_FAILURE)
goto end;
switch (trans) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
self->video_renegotiate = TRUE;
self->image_renegotiate = TRUE;
self->drop_newseg = FALSE;
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
case GST_STATE_CHANGE_NULL_TO_READY:
break;
default:
break;
}
end:
return ret;
}
static void
gst_wrapper_camera_bin_src_dispose (GObject * object)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (object);
if (self->outsel_imgpad) {
gst_object_unref (self->outsel_imgpad);
self->outsel_imgpad = NULL;
}
if (self->outsel_vidpad) {
gst_object_unref (self->outsel_vidpad);
self->outsel_vidpad = NULL;
}
if (self->app_vid_src) {
gst_object_unref (self->app_vid_src);
self->app_vid_src = NULL;
}
if (self->app_vid_filter) {
gst_object_unref (self->app_vid_filter);
self->app_vid_filter = NULL;
}
gst_caps_replace (&self->image_capture_caps, NULL);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static gboolean
gst_wrapper_camera_bin_src_set_mode (GstBaseCameraSrc * bcamsrc,
GstCameraBinMode mode)
{
GstPhotography *photography =
(GstPhotography *) gst_bin_get_by_interface (GST_BIN_CAST (bcamsrc),
GST_TYPE_PHOTOGRAPHY);
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (bcamsrc);
if (self->output_selector) {
if (mode == MODE_IMAGE) {
self->image_renegotiate = TRUE;
g_object_set (self->output_selector, "active-pad", self->outsel_imgpad,
NULL);
} else {
self->video_renegotiate = TRUE;
g_object_set (self->output_selector, "active-pad", self->outsel_vidpad,
NULL);
}
}
self->mode = mode;
if (photography) {
if (g_object_class_find_property (G_OBJECT_GET_CLASS (photography),
"capture-mode")) {
g_object_set (G_OBJECT (photography), "capture-mode", mode, NULL);
}
} else {
GstCaps *anycaps = gst_caps_new_any ();
gst_wrapper_camera_bin_reset_video_src_caps (self, anycaps);
gst_caps_unref (anycaps);
}
return TRUE;
}
static void
gst_wrapper_camera_bin_src_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (object);
switch (prop_id) {
case PROP_VIDEO_SRC:
if (GST_STATE (self) != GST_STATE_NULL) {
GST_ELEMENT_ERROR (self, CORE, FAILED,
("camerasrc must be in NULL state when setting the video source element"),
(NULL));
} else {
if (self->app_vid_src)
gst_object_unref (self->app_vid_src);
self->app_vid_src = g_value_get_object (value);
if (self->app_vid_src)
gst_object_ref (self->app_vid_src);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
break;
}
}
/**
* gst_wrapper_camera_bin_src_imgsrc_probe:
*
* Buffer probe called before sending each buffer to image queue.
*/
static gboolean
gst_wrapper_camera_bin_src_imgsrc_probe (GstPad * pad, GstBuffer * buffer,
gpointer data)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (data);
GstBaseCameraSrc *camerasrc = GST_BASE_CAMERA_SRC (data);
gboolean ret = FALSE;
GST_LOG_OBJECT (self, "Image probe, mode %d, capture count %d",
camerasrc->mode, self->image_capture_count);
g_mutex_lock (camerasrc->capturing_mutex);
if (self->image_capture_count > 0) {
ret = TRUE;
self->image_capture_count--;
/* post preview */
/* TODO This can likely be optimized if the viewfinder caps is the same as
* the preview caps, avoiding another scaling of the same buffer. */
GST_DEBUG_OBJECT (self, "Posting preview for image");
gst_base_camera_src_post_preview (camerasrc, buffer);
if (self->image_capture_count == 0) {
gst_base_camera_src_finish_capture (camerasrc);
}
}
g_mutex_unlock (camerasrc->capturing_mutex);
return ret;
}
static void
gst_wrapper_camera_bin_src_dispose (GObject * object)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (object);
if (self->app_vid_src) {
gst_object_unref (self->app_vid_src);
self->app_vid_src = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
/**
* img_capture_prepared:
* @data: camerasrc object
* @caps: caps describing the prepared image format
*
* Callback which is called after image capture has been prepared.
*/
static void
img_capture_prepared (gpointer data, GstCaps * caps)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (data);
GST_INFO_OBJECT (self, "image capture prepared");
/* It is possible we are about to get something else that we requested */
if (!gst_caps_is_equal (self->image_capture_caps, caps)) {
adapt_image_capture (self, caps);
} else {
set_capsfilter_caps (self, self->image_capture_caps);
}
}
/**
* gst_wrapper_camera_bin_src_vidsrc_probe:
*
* Buffer probe called before sending each buffer to image queue.
*/
static gboolean
gst_wrapper_camera_bin_src_vidsrc_probe (GstPad * pad, GstBuffer * buffer,
gpointer data)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (data);
GstBaseCameraSrc *camerasrc = GST_BASE_CAMERA_SRC_CAST (self);
gboolean ret = FALSE;
GST_LOG_OBJECT (self, "Video probe, mode %d, capture status %d",
camerasrc->mode, self->video_rec_status);
/* TODO do we want to lock for every buffer? */
/*
* Note that we can use gst_pad_push_event here because we are a buffer
* probe.
*/
/* TODO shouldn't access this directly */
g_mutex_lock (camerasrc->capturing_mutex);
if (self->video_rec_status == GST_VIDEO_RECORDING_STATUS_DONE) {
/* NOP */
} else if (self->video_rec_status == GST_VIDEO_RECORDING_STATUS_STARTING) {
GstClockTime ts;
GST_DEBUG_OBJECT (self, "Starting video recording");
self->video_rec_status = GST_VIDEO_RECORDING_STATUS_RUNNING;
ts = GST_BUFFER_TIMESTAMP (buffer);
if (!GST_CLOCK_TIME_IS_VALID (ts))
ts = 0;
gst_pad_push_event (self->vidsrc, gst_event_new_new_segment (FALSE, 1.0,
GST_FORMAT_TIME, ts, -1, 0));
/* post preview */
GST_DEBUG_OBJECT (self, "Posting preview for video");
gst_base_camera_src_post_preview (camerasrc, buffer);
ret = TRUE;
} else if (self->video_rec_status == GST_VIDEO_RECORDING_STATUS_FINISHING) {
/* send eos */
GST_DEBUG_OBJECT (self, "Finishing video recording, pushing eos");
gst_pad_push_event (pad, gst_event_new_eos ());
self->video_rec_status = GST_VIDEO_RECORDING_STATUS_DONE;
gst_base_camera_src_finish_capture (camerasrc);
} else {
ret = TRUE;
}
g_mutex_unlock (camerasrc->capturing_mutex);
return ret;
}
static void
gst_wrapper_camera_bin_src_set_zoom (GstBaseCameraSrc * bcamsrc, gfloat zoom)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (bcamsrc);
GST_INFO_OBJECT (self, "setting zoom %f", zoom);
if (set_videosrc_zoom (self, zoom)) {
set_element_zoom (self, ZOOM_1X);
GST_INFO_OBJECT (self, "zoom set using videosrc");
} else if (set_element_zoom (self, zoom)) {
GST_INFO_OBJECT (self, "zoom set using gst elements");
} else {
GST_INFO_OBJECT (self, "setting zoom failed");
}
}
static gboolean
gst_wrapper_camera_bin_src_src_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
gboolean ret = TRUE;
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (parent);
GstPad *upstream_pad = NULL;
GST_DEBUG_OBJECT (self, "Handling event %p %" GST_PTR_FORMAT, event, event);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_RECONFIGURE:
if (pad == self->imgsrc) {
GST_DEBUG_OBJECT (self, "Image mode reconfigure event received");
self->image_renegotiate = TRUE;
} else if (pad == self->vidsrc) {
GST_DEBUG_OBJECT (self, "Video mode reconfigure event received");
self->video_renegotiate = TRUE;
}
if (pad == self->imgsrc || pad == self->vidsrc) {
gst_event_unref (event);
return ret;
}
break;
default:
break;
}
if (pad == self->imgsrc) {
upstream_pad = self->outsel_imgpad;
} else if (pad == self->vidsrc) {
upstream_pad = self->outsel_vidpad;
}
if (upstream_pad) {
ret = gst_pad_send_event (upstream_pad, event);
} else {
GST_WARNING_OBJECT (self, "Event caught that doesn't have an upstream pad -"
"this shouldn't be possible!");
gst_event_unref (event);
ret = FALSE;
}
return ret;
}
static void
gst_wrapper_camera_bin_src_caps_cb (GObject * gobject, GParamSpec * pspec,
gpointer user_data)
{
GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (user_data);
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (user_data);
GstPad *src_caps_src_pad;
GstCaps *caps = NULL;
GstStructure *in_st = NULL;
/* get the new caps that were set on the capsfilter that configures the
* source */
src_caps_src_pad = gst_element_get_static_pad (self->src_filter, "src");
caps = gst_pad_query_caps (src_caps_src_pad, NULL);
gst_object_unref (src_caps_src_pad);
GST_DEBUG_OBJECT (self, "src-filter caps changed to %s",
gst_caps_to_string (caps));
if (gst_caps_get_size (caps)) {
in_st = gst_caps_get_structure (caps, 0);
if (in_st) {
gst_structure_get_int (in_st, "width", &bcamsrc->width);
gst_structure_get_int (in_st, "height", &bcamsrc->height);
GST_DEBUG_OBJECT (self, "Source dimensions now: %dx%d", bcamsrc->width,
bcamsrc->height);
}
}
/* Update zoom */
gst_base_camera_src_setup_zoom (bcamsrc);
/* Update post-zoom capsfilter */
if (self->src_zoom_filter) {
GstCaps *filtercaps;
g_object_get (G_OBJECT (self->src_zoom_filter), "caps", &filtercaps, NULL);
if (!gst_caps_is_equal (filtercaps, caps))
g_object_set (G_OBJECT (self->src_zoom_filter), "caps", caps, NULL);
gst_caps_unref (filtercaps);
}
/* drop our ref on the caps */
gst_caps_unref (caps);
};
static void
gst_wrapper_camera_bin_src_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (object);
switch (prop_id) {
case PROP_VIDEO_SRC:
if (self->src_vid_src)
g_value_set_object (value, self->src_vid_src);
else
g_value_set_object (value, self->app_vid_src);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
break;
}
}
static void
gst_wrapper_camera_bin_src_caps_cb (GstPad * pad, GParamSpec * pspec,
gpointer user_data)
{
GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (user_data);
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (user_data);
GstCaps *caps;
GstStructure *in_st = NULL;
caps = gst_pad_get_current_caps (pad);
GST_DEBUG_OBJECT (self, "src-filter caps changed to %" GST_PTR_FORMAT, caps);
if (caps && gst_caps_get_size (caps)) {
in_st = gst_caps_get_structure (caps, 0);
if (in_st) {
gst_structure_get_int (in_st, "width", &bcamsrc->width);
gst_structure_get_int (in_st, "height", &bcamsrc->height);
GST_DEBUG_OBJECT (self, "Source dimensions now: %dx%d", bcamsrc->width,
bcamsrc->height);
}
}
/* Update zoom */
gst_base_camera_src_setup_zoom (bcamsrc);
/* Update post-zoom capsfilter */
if (self->src_zoom_filter) {
GstCaps *filtercaps;
g_object_get (G_OBJECT (self->src_zoom_filter), "caps", &filtercaps, NULL);
if (caps != filtercaps && (caps == NULL || filtercaps == NULL ||
!gst_caps_is_equal (filtercaps, caps)))
g_object_set (G_OBJECT (self->src_zoom_filter), "caps", caps, NULL);
if (filtercaps)
gst_caps_unref (filtercaps);
}
if (caps)
gst_caps_unref (caps);
};
static void
gst_wrapper_camera_bin_src_stop_capture (GstBaseCameraSrc * camerasrc)
{
GstWrapperCameraBinSrc *src = GST_WRAPPER_CAMERA_BIN_SRC (camerasrc);
/* TODO shoud we access this directly? Maybe a macro is better? */
if (src->mode == MODE_VIDEO) {
if (src->video_rec_status == GST_VIDEO_RECORDING_STATUS_STARTING) {
GST_DEBUG_OBJECT (src, "Aborting, had not started recording");
src->video_rec_status = GST_VIDEO_RECORDING_STATUS_DONE;
} else if (src->video_rec_status == GST_VIDEO_RECORDING_STATUS_RUNNING) {
GST_DEBUG_OBJECT (src, "Marking video recording as finishing");
src->video_rec_status = GST_VIDEO_RECORDING_STATUS_FINISHING;
}
} else {
src->image_capture_count = 0;
}
}
static gboolean
gst_wrapper_camera_bin_src_start_capture (GstBaseCameraSrc * camerasrc)
{
GstWrapperCameraBinSrc *src = GST_WRAPPER_CAMERA_BIN_SRC (camerasrc);
/* TODO should we access this directly? Maybe a macro is better? */
if (src->mode == MODE_IMAGE) {
start_image_capture (src);
src->image_capture_count = 1;
} else if (src->mode == MODE_VIDEO) {
GstCaps *caps = NULL;
if (src->video_renegotiate) {
GstCaps *anycaps = gst_caps_new_any ();
g_mutex_unlock (&camerasrc->capturing_mutex);
gst_wrapper_camera_bin_reset_video_src_caps (src, anycaps);
g_mutex_lock (&camerasrc->capturing_mutex);
/* clean capsfilter caps so they don't interfere here */
g_object_set (src->src_filter, "caps", NULL, NULL);
if (src->src_zoom_filter)
g_object_set (src->src_zoom_filter, "caps", NULL, NULL);
GST_DEBUG_OBJECT (src, "Getting allowed videosrc caps");
caps = gst_pad_get_allowed_caps (src->vidsrc);
GST_DEBUG_OBJECT (src, "Video src caps %" GST_PTR_FORMAT, caps);
src->video_renegotiate = FALSE;
g_mutex_unlock (&camerasrc->capturing_mutex);
gst_wrapper_camera_bin_reset_video_src_caps (src, caps);
g_mutex_lock (&camerasrc->capturing_mutex);
gst_caps_unref (caps);
gst_caps_unref (anycaps);
}
if (src->video_rec_status == GST_VIDEO_RECORDING_STATUS_DONE) {
src->video_rec_status = GST_VIDEO_RECORDING_STATUS_STARTING;
}
} else {
g_assert_not_reached ();
return FALSE;
}
return TRUE;
}
static gboolean
gst_wrapper_camera_bin_src_event (GstPad * pad, GstEvent * event)
{
GstWrapperCameraBinSrc *src =
GST_WRAPPER_CAMERA_BIN_SRC (GST_PAD_PARENT (pad));
const GstStructure *structure;
structure = gst_event_get_structure (event);
if (structure && gst_structure_has_name (structure, "renegotiate")) {
GST_DEBUG_OBJECT (src, "Received renegotiate on pad %s",
GST_PAD_NAME (pad));
if (pad == src->imgsrc) {
src->image_renegotiate = TRUE;
} else if (pad == src->vidsrc) {
src->video_renegotiate = TRUE;
}
}
return src->srcpad_event_func (pad, event);
}
/**
* gst_wrapper_camera_bin_src_imgsrc_probe:
*
* Buffer probe called before sending each buffer to image queue.
*/
static gboolean
gst_wrapper_camera_bin_src_imgsrc_probe (GstPad * pad, GstBuffer * buffer,
gpointer data)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (data);
GstBaseCameraSrc *camerasrc = GST_BASE_CAMERA_SRC (data);
gboolean ret = FALSE;
GST_LOG_OBJECT (self, "Image probe, mode %d, capture count %d",
camerasrc->mode, self->image_capture_count);
g_mutex_lock (camerasrc->capturing_mutex);
if (self->image_capture_count > 0) {
ret = TRUE;
self->image_capture_count--;
if (self->image_capture_count == 0) {
gst_base_camera_src_finish_capture (camerasrc);
}
}
g_mutex_unlock (camerasrc->capturing_mutex);
return ret;
}
/**
* gst_wrapper_camera_bin_src_imgsrc_probe:
*
* Buffer probe called before sending each buffer to image queue.
*/
static GstPadProbeReturn
gst_wrapper_camera_bin_src_imgsrc_probe (GstPad * pad, GstPadProbeInfo * info,
gpointer data)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (data);
GstBaseCameraSrc *camerasrc = GST_BASE_CAMERA_SRC (data);
GstBuffer *buffer = GST_BUFFER (info->data);
GstPadProbeReturn ret = GST_PAD_PROBE_DROP;
GST_LOG_OBJECT (self, "Image probe, mode %d, capture count %d bufsize: %"
G_GSIZE_FORMAT, camerasrc->mode, self->image_capture_count,
gst_buffer_get_size (buffer));
g_mutex_lock (&camerasrc->capturing_mutex);
if (self->image_capture_count > 0) {
GstSample *sample;
GstCaps *caps;
ret = GST_PAD_PROBE_OK;
self->image_capture_count--;
/* post preview */
/* TODO This can likely be optimized if the viewfinder caps is the same as
* the preview caps, avoiding another scaling of the same buffer. */
GST_DEBUG_OBJECT (self, "Posting preview for image");
caps = gst_pad_get_current_caps (pad);
sample = gst_sample_new (buffer, caps, NULL, NULL);
gst_base_camera_src_post_preview (camerasrc, sample);
gst_caps_unref (caps);
gst_sample_unref (sample);
if (self->image_capture_count == 0) {
gst_base_camera_src_finish_capture (camerasrc);
}
}
g_mutex_unlock (&camerasrc->capturing_mutex);
return ret;
}
/**
* gst_wrapper_camera_bin_src_construct_pipeline:
* @bcamsrc: camerasrc object
*
* This function creates and links the elements of the camerasrc bin
* videosrc ! cspconv ! srcfilter ! cspconv ! capsfilter ! crop ! scale ! \
* capsfilter ! tee name=t
* t. ! ... (viewfinder pad)
* t. ! output-selector name=outsel
* outsel. ! (image pad)
* outsel. ! (video pad)
*
* Returns: TRUE, if elements were successfully created, FALSE otherwise
*/
static gboolean
gst_wrapper_camera_bin_src_construct_pipeline (GstBaseCameraSrc * bcamsrc)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (bcamsrc);
GstBin *cbin = GST_BIN (bcamsrc);
GstElement *tee;
GstElement *filter_csp;
GstElement *src_csp;
GstElement *capsfilter;
gboolean ret = FALSE;
GstPad *vf_pad;
GstPad *tee_capture_pad;
GstPad *src_caps_src_pad;
if (!self->elements_created) {
GST_DEBUG_OBJECT (self, "constructing pipeline");
/* Add application set or default video src element */
if (!(self->src_vid_src = gst_camerabin_setup_default_element (cbin,
self->app_vid_src, "autovideosrc", DEFAULT_VIDEOSRC,
"camerasrc-real-src"))) {
self->src_vid_src = NULL;
goto done;
} else {
if (!gst_camerabin_add_element (cbin, self->src_vid_src)) {
goto done;
}
}
/* we lost the reference */
self->app_vid_src = NULL;
/* we listen for changes to max-zoom in the video src so that
* we can proxy them to the basecamerasrc property */
if (g_object_class_find_property (G_OBJECT_GET_CLASS (bcamsrc), "max-zoom")) {
g_signal_connect (G_OBJECT (self->src_vid_src), "notify::max-zoom",
(GCallback) gst_wrapper_camera_bin_src_max_zoom_cb, bcamsrc);
}
/* add a buffer probe to the src elemento to drop EOS from READY->NULL */
{
GstPad *pad;
pad = gst_element_get_static_pad (self->src_vid_src, "src");
self->src_event_probe_id = gst_pad_add_event_probe (pad,
(GCallback) gst_wrapper_camera_src_src_event_probe, self);
gst_object_unref (pad);
}
if (!gst_camerabin_create_and_add_element (cbin, "ffmpegcolorspace",
"src-colorspace"))
goto done;
if (!(self->src_filter =
gst_camerabin_create_and_add_element (cbin, "capsfilter",
"src-capsfilter")))
goto done;
/* attach to notify::caps on the first capsfilter and use a callback
* to recalculate the zoom properties when these caps change and to
* propagate the caps to the second capsfilter */
src_caps_src_pad = gst_element_get_static_pad (self->src_filter, "src");
g_signal_connect (src_caps_src_pad, "notify::caps",
G_CALLBACK (gst_wrapper_camera_bin_src_caps_cb), self);
gst_object_unref (src_caps_src_pad);
if (!(self->src_zoom_crop =
gst_camerabin_create_and_add_element (cbin, "videocrop",
"zoom-crop")))
goto done;
if (!(self->src_zoom_scale =
gst_camerabin_create_and_add_element (cbin, "videoscale",
"zoom-scale")))
goto done;
if (!(self->src_zoom_filter =
gst_camerabin_create_and_add_element (cbin, "capsfilter",
"zoom-capsfilter")))
goto done;
if (!(tee =
gst_camerabin_create_and_add_element (cbin, "tee",
"camerasrc-tee")))
goto done;
/* viewfinder pad */
vf_pad = gst_element_get_request_pad (tee, "src%d");
g_object_set (tee, "alloc-pad", vf_pad, NULL);
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vfsrc), vf_pad);
gst_object_unref (vf_pad);
/* image/video pad from tee */
tee_capture_pad = gst_element_get_request_pad (tee, "src%d");
self->output_selector =
gst_element_factory_make ("output-selector", "outsel");
g_object_set (self->output_selector, "pad-negotiation-mode", 0, NULL);
gst_bin_add (GST_BIN (self), self->output_selector);
{
GstPad *pad = gst_element_get_static_pad (self->output_selector, "sink");
/* check return TODO */
gst_pad_link (tee_capture_pad, pad);
gst_object_unref (pad);
}
gst_object_unref (tee_capture_pad);
/* Create the 2 output pads for video and image */
self->outsel_vidpad =
gst_element_get_request_pad (self->output_selector, "src%d");
self->outsel_imgpad =
gst_element_get_request_pad (self->output_selector, "src%d");
g_assert (self->outsel_vidpad != NULL);
g_assert (self->outsel_imgpad != NULL);
gst_pad_add_buffer_probe (self->outsel_imgpad,
G_CALLBACK (gst_wrapper_camera_bin_src_imgsrc_probe), self);
gst_pad_add_buffer_probe (self->outsel_vidpad,
G_CALLBACK (gst_wrapper_camera_bin_src_vidsrc_probe), self);
gst_ghost_pad_set_target (GST_GHOST_PAD (self->imgsrc),
self->outsel_imgpad);
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vidsrc),
self->outsel_vidpad);
if (bcamsrc->mode == MODE_IMAGE) {
g_object_set (self->output_selector, "active-pad", self->outsel_imgpad,
NULL);
} else {
g_object_set (self->output_selector, "active-pad", self->outsel_vidpad,
NULL);
}
gst_pad_set_active (self->vfsrc, TRUE);
gst_pad_set_active (self->imgsrc, TRUE); /* XXX ??? */
gst_pad_set_active (self->vidsrc, TRUE); /* XXX ??? */
}
/* Do this even if pipeline is constructed */
if (self->video_filter) {
/* check if we need to replace the current one */
if (self->video_filter != self->app_vid_filter) {
gst_bin_remove (cbin, self->video_filter);
gst_object_unref (self->video_filter);
self->video_filter = NULL;
filter_csp = gst_bin_get_by_name (cbin, "filter-colorspace");
gst_bin_remove (cbin, filter_csp);
gst_object_unref (filter_csp);
filter_csp = NULL;
}
}
if (!self->video_filter) {
if (self->app_vid_filter) {
self->video_filter = gst_object_ref (self->app_vid_filter);
filter_csp = gst_element_factory_make ("ffmpegcolorspace",
"filter-colorspace");
gst_bin_add_many (cbin, self->video_filter, filter_csp, NULL);
src_csp = gst_bin_get_by_name (cbin, "src-colorspace");
capsfilter = gst_bin_get_by_name (cbin, "src-capsfilter");
if (gst_pad_is_linked (gst_element_get_static_pad (src_csp, "src")))
gst_element_unlink (src_csp, capsfilter);
if (!gst_element_link_many (src_csp, self->video_filter, filter_csp,
capsfilter, NULL))
goto done;
}
}
ret = TRUE;
self->elements_created = TRUE;
done:
return ret;
}
/**
* gst_wrapper_camera_bin_src_construct_pipeline:
* @bcamsrc: camerasrc object
*
* This function creates and links the elements of the camerasrc bin
* videosrc ! cspconv ! srcfilter ! cspconv ! capsfilter ! crop ! scale ! \
* capsfilter ! tee name=t
* t. ! ... (viewfinder pad)
* t. ! output-selector name=outsel
* outsel. ! (image pad)
* outsel. ! (video pad)
*
* Returns: TRUE, if elements were successfully created, FALSE otherwise
*/
static gboolean
gst_wrapper_camera_bin_src_construct_pipeline (GstBaseCameraSrc * bcamsrc)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (bcamsrc);
GstBin *cbin = GST_BIN (bcamsrc);
GstElement *tee;
GstElement *filter_csp;
GstElement *src_csp;
GstElement *capsfilter;
gboolean ret = FALSE;
GstPad *vf_pad;
GstPad *tee_capture_pad;
GstPad *src_caps_src_pad;
/* checks and adds a new video src if needed */
if (!check_and_replace_src (self))
goto done;
if (!self->elements_created) {
GST_DEBUG_OBJECT (self, "constructing pipeline");
if (!gst_camerabin_create_and_add_element (cbin, "videoconvert",
"src-videoconvert"))
goto done;
if (self->app_vid_filter) {
self->video_filter = gst_object_ref (self->app_vid_filter);
if (!gst_camerabin_add_element (cbin, self->video_filter))
goto done;
if (!gst_camerabin_create_and_add_element (cbin, "videoconvert",
"filter-videoconvert"))
goto done;
}
if (!(self->src_filter =
gst_camerabin_create_and_add_element (cbin, "capsfilter",
"src-capsfilter")))
goto done;
/* attach to notify::caps on the first capsfilter and use a callback
* to recalculate the zoom properties when these caps change and to
* propagate the caps to the second capsfilter */
src_caps_src_pad = gst_element_get_static_pad (self->src_filter, "src");
g_signal_connect (src_caps_src_pad, "notify::caps",
G_CALLBACK (gst_wrapper_camera_bin_src_caps_cb), self);
gst_object_unref (src_caps_src_pad);
if (!(self->src_zoom_crop =
gst_camerabin_create_and_add_element (cbin, "videocrop",
"zoom-crop")))
goto done;
if (!(self->src_zoom_scale =
gst_camerabin_create_and_add_element (cbin, "videoscale",
"zoom-scale")))
goto done;
if (!(self->src_zoom_filter =
gst_camerabin_create_and_add_element (cbin, "capsfilter",
"zoom-capsfilter")))
goto done;
if (!(tee =
gst_camerabin_create_and_add_element (cbin, "tee",
"camerasrc-tee")))
goto done;
/* viewfinder pad */
vf_pad = gst_element_get_request_pad (tee, "src_%u");
g_object_set (tee, "alloc-pad", vf_pad, NULL);
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vfsrc), vf_pad);
gst_object_unref (vf_pad);
/* image/video pad from tee */
tee_capture_pad = gst_element_get_request_pad (tee, "src_%u");
self->output_selector =
gst_element_factory_make ("output-selector", "outsel");
g_object_set (self->output_selector, "pad-negotiation-mode", 2, NULL);
gst_bin_add (GST_BIN (self), self->output_selector);
{
GstPad *pad = gst_element_get_static_pad (self->output_selector, "sink");
/* check return TODO */
gst_pad_link (tee_capture_pad, pad);
gst_object_unref (pad);
}
gst_object_unref (tee_capture_pad);
/* Create the 2 output pads for video and image */
self->outsel_vidpad =
gst_element_get_request_pad (self->output_selector, "src_%u");
self->outsel_imgpad =
gst_element_get_request_pad (self->output_selector, "src_%u");
g_assert (self->outsel_vidpad != NULL);
g_assert (self->outsel_imgpad != NULL);
gst_pad_add_probe (self->outsel_imgpad, GST_PAD_PROBE_TYPE_BUFFER,
gst_wrapper_camera_bin_src_imgsrc_probe, gst_object_ref (self),
gst_object_unref);
gst_pad_add_probe (self->outsel_vidpad, GST_PAD_PROBE_TYPE_BUFFER,
gst_wrapper_camera_bin_src_vidsrc_probe, gst_object_ref (self),
gst_object_unref);
gst_ghost_pad_set_target (GST_GHOST_PAD (self->imgsrc),
self->outsel_imgpad);
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vidsrc),
self->outsel_vidpad);
if (bcamsrc->mode == MODE_IMAGE) {
g_object_set (self->output_selector, "active-pad", self->outsel_imgpad,
NULL);
} else {
g_object_set (self->output_selector, "active-pad", self->outsel_vidpad,
NULL);
}
gst_pad_set_active (self->vfsrc, TRUE);
gst_pad_set_active (self->imgsrc, TRUE); /* XXX ??? */
gst_pad_set_active (self->vidsrc, TRUE); /* XXX ??? */
}
/* Do this even if pipeline is constructed */
if (self->video_filter) {
/* check if we need to replace the current one */
if (self->video_filter != self->app_vid_filter) {
gst_bin_remove (cbin, self->video_filter);
gst_object_unref (self->video_filter);
self->video_filter = NULL;
filter_csp = gst_bin_get_by_name (cbin, "filter-videoconvert");
gst_bin_remove (cbin, filter_csp);
gst_object_unref (filter_csp);
filter_csp = NULL;
}
}
if (!self->video_filter) {
if (self->app_vid_filter) {
self->video_filter = gst_object_ref (self->app_vid_filter);
filter_csp = gst_element_factory_make ("videoconvert",
"filter-videoconvert");
gst_bin_add_many (cbin, self->video_filter, filter_csp, NULL);
src_csp = gst_bin_get_by_name (cbin, "src-videoconvert");
capsfilter = gst_bin_get_by_name (cbin, "src-capsfilter");
if (gst_pad_is_linked (gst_element_get_static_pad (src_csp, "src")))
gst_element_unlink (src_csp, capsfilter);
if (!gst_element_link_many (src_csp, self->video_filter, filter_csp,
capsfilter, NULL))
goto done;
}
}
ret = TRUE;
self->elements_created = TRUE;
done:
return ret;
}
/**
* gst_wrapper_camera_bin_src_vidsrc_probe:
*
* Buffer probe called before sending each buffer to image queue.
*/
static GstPadProbeReturn
gst_wrapper_camera_bin_src_vidsrc_probe (GstPad * pad, GstPadProbeInfo * info,
gpointer data)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (data);
GstBaseCameraSrc *camerasrc = GST_BASE_CAMERA_SRC_CAST (self);
GstPadProbeReturn ret = GST_PAD_PROBE_DROP;
GstBuffer *buffer = GST_BUFFER (info->data);
GST_LOG_OBJECT (self, "Video probe, mode %d, capture status %d",
camerasrc->mode, self->video_rec_status);
/* TODO do we want to lock for every buffer? */
/*
* Note that we can use gst_pad_push_event here because we are a buffer
* probe.
*/
/* TODO shouldn't access this directly */
g_mutex_lock (&camerasrc->capturing_mutex);
if (self->video_rec_status == GST_VIDEO_RECORDING_STATUS_DONE) {
/* NOP */
} else if (self->video_rec_status == GST_VIDEO_RECORDING_STATUS_STARTING) {
GstClockTime ts;
GstSegment segment;
GstCaps *caps;
GstSample *sample;
GST_DEBUG_OBJECT (self, "Starting video recording");
self->video_rec_status = GST_VIDEO_RECORDING_STATUS_RUNNING;
ts = GST_BUFFER_TIMESTAMP (buffer);
if (!GST_CLOCK_TIME_IS_VALID (ts))
ts = 0;
gst_segment_init (&segment, GST_FORMAT_TIME);
segment.start = ts;
gst_pad_push_event (self->vidsrc, gst_event_new_segment (&segment));
/* post preview */
GST_DEBUG_OBJECT (self, "Posting preview for video");
caps = gst_pad_get_current_caps (pad);
sample = gst_sample_new (buffer, caps, NULL, NULL);
gst_base_camera_src_post_preview (camerasrc, sample);
gst_caps_unref (caps);
gst_sample_unref (sample);
ret = GST_PAD_PROBE_OK;
} else if (self->video_rec_status == GST_VIDEO_RECORDING_STATUS_FINISHING) {
GstPad *peer;
/* send eos */
GST_DEBUG_OBJECT (self, "Finishing video recording, pushing eos");
peer = gst_pad_get_peer (self->vidsrc);
if (peer) {
/* send to the peer as we don't want our pads with eos flag */
gst_pad_send_event (peer, gst_event_new_eos ());
gst_object_unref (peer);
} else {
GST_WARNING_OBJECT (camerasrc, "No peer pad for vidsrc");
}
self->video_rec_status = GST_VIDEO_RECORDING_STATUS_DONE;
gst_base_camera_src_finish_capture (camerasrc);
} else {
ret = GST_PAD_PROBE_OK;
}
g_mutex_unlock (&camerasrc->capturing_mutex);
return ret;
}
/**
* gst_wrapper_camera_bin_src_construct_pipeline:
* @bcamsrc: camerasrc object
*
* This function creates and links the elements of the camerasrc bin
* videosrc ! cspconv ! capsfilter ! crop ! scale ! capsfilter ! tee name=t !
* t. ! ... (viewfinder pad)
* t. ! output-selector name=outsel
* outsel. ! (image pad)
* outsel. ! (video pad)
*
* Returns: TRUE, if elements were successfully created, FALSE otherwise
*/
static gboolean
gst_wrapper_camera_bin_src_construct_pipeline (GstBaseCameraSrc * bcamsrc)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (bcamsrc);
GstBin *cbin = GST_BIN (bcamsrc);
GstElement *tee;
gboolean ret = FALSE;
GstElement *videoscale;
GstPad *vf_pad;
GstPad *tee_capture_pad;
if (self->elements_created)
return TRUE;
GST_DEBUG_OBJECT (self, "constructing pipeline");
/* Add application set or default video src element */
if (!(self->src_vid_src = gst_camerabin_setup_default_element (cbin,
self->app_vid_src, "autovideosrc", DEFAULT_VIDEOSRC))) {
self->src_vid_src = NULL;
goto done;
} else {
if (!gst_camerabin_add_element (cbin, self->src_vid_src)) {
goto done;
}
}
/* we lost the reference */
self->app_vid_src = NULL;
/* add a buffer probe to the src elemento to drop EOS from READY->NULL */
{
GstPad *pad;
pad = gst_element_get_static_pad (self->src_vid_src, "src");
self->src_event_probe_id = gst_pad_add_event_probe (pad,
(GCallback) src_event_probe, self);
gst_object_unref (pad);
}
if (!gst_camerabin_create_and_add_element (cbin, "ffmpegcolorspace"))
goto done;
if (!(self->src_filter =
gst_camerabin_create_and_add_element (cbin, "capsfilter")))
goto done;
if (!(self->src_zoom_crop =
gst_camerabin_create_and_add_element (cbin, "videocrop")))
goto done;
if (!(self->src_zoom_scale =
gst_camerabin_create_and_add_element (cbin, "videoscale")))
goto done;
if (!(self->src_zoom_filter =
gst_camerabin_create_and_add_element (cbin, "capsfilter")))
goto done;
if (!(tee = gst_camerabin_create_and_add_element (cbin, "tee")))
goto done;
/* viewfinder pad */
vf_pad = gst_element_get_request_pad (tee, "src%d");
g_object_set (tee, "alloc-pad", vf_pad, NULL);
gst_object_unref (vf_pad);
/* the viewfinder should always work, so we add some converters to it */
if (!gst_camerabin_create_and_add_element (cbin, "ffmpegcolorspace"))
goto done;
if (!(videoscale = gst_camerabin_create_and_add_element (cbin, "videoscale")))
goto done;
/* image/video pad from tee */
tee_capture_pad = gst_element_get_request_pad (tee, "src%d");
self->output_selector =
gst_element_factory_make ("output-selector", "outsel");
gst_bin_add (GST_BIN (self), self->output_selector);
{
GstPad *pad = gst_element_get_static_pad (self->output_selector, "sink");
/* check return TODO */
gst_pad_link (tee_capture_pad, pad);
gst_object_unref (pad);
}
gst_object_unref (tee_capture_pad);
/* Create the 2 output pads for video and image */
self->outsel_vidpad =
gst_element_get_request_pad (self->output_selector, "src%d");
self->outsel_imgpad =
gst_element_get_request_pad (self->output_selector, "src%d");
g_assert (self->outsel_vidpad != NULL);
g_assert (self->outsel_imgpad != NULL);
gst_pad_add_buffer_probe (self->outsel_imgpad,
G_CALLBACK (gst_wrapper_camera_bin_src_imgsrc_probe), self);
gst_pad_add_buffer_probe (self->outsel_vidpad,
G_CALLBACK (gst_wrapper_camera_bin_src_vidsrc_probe), self);
gst_ghost_pad_set_target (GST_GHOST_PAD (self->imgsrc), self->outsel_imgpad);
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vidsrc), self->outsel_vidpad);
if (bcamsrc->mode == MODE_IMAGE) {
g_object_set (self->output_selector, "active-pad", self->outsel_imgpad,
NULL);
} else {
g_object_set (self->output_selector, "active-pad", self->outsel_vidpad,
NULL);
}
/* hook-up the vf ghostpad */
vf_pad = gst_element_get_static_pad (videoscale, "src");
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vfsrc), vf_pad);
gst_object_unref (vf_pad);
gst_pad_set_active (self->vfsrc, TRUE);
gst_pad_set_active (self->imgsrc, TRUE); /* XXX ??? */
gst_pad_set_active (self->vidsrc, TRUE); /* XXX ??? */
ret = TRUE;
self->elements_created = TRUE;
done:
return ret;
}
static GstCaps *
gst_wrapper_camera_bin_src_get_allowed_input_caps (GstBaseCameraSrc * bcamsrc)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (bcamsrc);
GstCaps *caps = NULL;
GstPad *pad = NULL, *peer_pad = NULL;
GstState state;
GstElement *videosrc;
videosrc = self->src_vid_src ? self->src_vid_src : self->app_vid_src;
if (!videosrc) {
GST_WARNING_OBJECT (self, "no videosrc, can't get allowed caps");
goto failed;
}
if (self->allowed_caps) {
GST_DEBUG_OBJECT (self, "returning cached caps");
goto done;
}
pad = gst_element_get_static_pad (videosrc, "src");
if (!pad) {
GST_WARNING_OBJECT (self, "no srcpad in videosrc");
goto failed;
}
state = GST_STATE (videosrc);
/* Make this function work also in NULL state */
if (state == GST_STATE_NULL) {
GST_DEBUG_OBJECT (self, "setting videosrc to ready temporarily");
peer_pad = gst_pad_get_peer (pad);
if (peer_pad) {
gst_pad_unlink (pad, peer_pad);
}
/* Set videosrc to READY to open video device */
gst_element_set_locked_state (videosrc, TRUE);
gst_element_set_state (videosrc, GST_STATE_READY);
}
self->allowed_caps = gst_pad_get_caps (pad);
/* Restore state and re-link if necessary */
if (state == GST_STATE_NULL) {
GST_DEBUG_OBJECT (self, "restoring videosrc state %d", state);
/* Reset videosrc to NULL state, some drivers seem to need this */
gst_element_set_state (videosrc, GST_STATE_NULL);
if (peer_pad) {
gst_pad_link (pad, peer_pad);
gst_object_unref (peer_pad);
}
gst_element_set_locked_state (videosrc, FALSE);
}
gst_object_unref (pad);
done:
if (self->allowed_caps) {
caps = gst_caps_copy (self->allowed_caps);
}
GST_DEBUG_OBJECT (self, "allowed caps:%" GST_PTR_FORMAT, caps);
failed:
return caps;
}