gstreamer/gst/camerabin2/gstwrappercamerabinsrc.c

1179 lines
38 KiB
C
Raw Normal View History

/*
* GStreamer
* Copyright (C) 2010 Texas Instruments, Inc
2011-12-23 19:33:45 +00:00
* Copyright (C) 2011 Thiago Santos <thiago.sousa.santos@collabora.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-wrappercamerabinsrc
*
* A camera bin src element that wraps a default video source with a single
* pad into the 3pad model that camerabin2 expects.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gst/interfaces/photography.h>
#include <gst/gst-i18n-plugin.h>
#include "gstwrappercamerabinsrc.h"
#include "gstdigitalzoom.h"
#include "camerabingeneral.h"
enum
{
PROP_0,
PROP_VIDEO_SRC,
PROP_VIDEO_SRC_FILTER
};
GST_DEBUG_CATEGORY (wrapper_camera_bin_src_debug);
#define GST_CAT_DEFAULT wrapper_camera_bin_src_debug
2011-12-23 19:33:45 +00:00
#define gst_wrapper_camera_bin_src_parent_class parent_class
G_DEFINE_TYPE (GstWrapperCameraBinSrc, gst_wrapper_camera_bin_src,
GST_TYPE_BASE_CAMERA_SRC);
static GstStaticPadTemplate vfsrc_template =
GST_STATIC_PAD_TEMPLATE (GST_BASE_CAMERA_SRC_VIEWFINDER_PAD_NAME,
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate imgsrc_template =
GST_STATIC_PAD_TEMPLATE (GST_BASE_CAMERA_SRC_IMAGE_PAD_NAME,
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate vidsrc_template =
GST_STATIC_PAD_TEMPLATE (GST_BASE_CAMERA_SRC_VIDEO_PAD_NAME,
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static void set_capsfilter_caps (GstWrapperCameraBinSrc * self,
GstCaps * new_caps);
static void
gst_wrapper_camera_bin_src_dispose (GObject * object)
{
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (object);
if (self->src_pad) {
gst_object_unref (self->src_pad);
self->src_pad = NULL;
}
if (self->video_tee_sink) {
gst_object_unref (self->video_tee_sink);
self->video_tee_sink = NULL;
}
if (self->video_tee_vf_pad) {
gst_object_unref (self->video_tee_vf_pad);
self->video_tee_vf_pad = 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;
}
if (self->srcfilter_pad) {
gst_object_unref (self->srcfilter_pad);
self->srcfilter_pad = NULL;
}
2011-03-11 13:32:35 +00:00
gst_caps_replace (&self->image_capture_caps, NULL);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_wrapper_camera_bin_src_finalize (GstWrapperCameraBinSrc * self)
{
G_OBJECT_CLASS (parent_class)->finalize ((GObject *) (self));
}
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;
case PROP_VIDEO_SRC_FILTER:
if (GST_STATE (self) != GST_STATE_NULL) {
GST_ELEMENT_ERROR (self, CORE, FAILED,
("camerasrc must be in NULL state when setting the video source filter element"),
(NULL));
} else {
if (self->app_vid_filter)
gst_object_unref (self->app_vid_filter);
self->app_vid_filter = g_value_get_object (value);
if (self->app_vid_filter)
gst_object_ref (self->app_vid_filter);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
break;
}
}
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;
case PROP_VIDEO_SRC_FILTER:
if (self->video_filter)
g_value_set_object (value, self->video_filter);
else
g_value_set_object (value, self->app_vid_filter);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
break;
}
}
wrappercamerabinsrc: Rework cropping for zoom and dimension reduction wrappercamerabinsrc has a videocrop element to be used for zooming and for cropping when input caps is different when used with the GstPhotography interface. The zooming part needs the following elements: capsfilter ! videocrop ! videoscale ! capsfilter The capsfilters should always have the same caps to ensure the zooming is done and preserves dimensions, unless when it is needed to do more cropping due to input dimensions those caps need to be modified accordingly to preserve the output dimensions. This, however, makes it hard to get caps negotiation to work properly as we need to have different caps in the capsfilters to account for the extra cropping needed. It could be simple for fixed caps but it gets tricky with unfixed ones. To solve this, this patch splits the zooming and dimension reduction cropping into 2 separate videocrop elements. The first one does the dimension cropping, which is only needed when the GstPhotography API is used and the source provides a caps that is different than what is requested, while the second is dedicated to zoom crop only. The first part of the pipeline goes from: src ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter to src ! videocrop ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter It might add an extra overhead in the image capture as the image might need to be cropped twice but this can be solved by enabling videocrop to use crop metas so only the later one does the real cropping. It also makes the code a bit simpler.
2015-04-24 17:19:50 +00:00
static void
gst_wrapper_camera_bin_src_reset_src_zoom (GstWrapperCameraBinSrc * self)
{
if (self->src_crop) {
g_object_set (self->src_crop, "top", 0, "left", 0, "bottom", 0, "right", 0,
NULL);
}
}
static void
gst_wrapper_camera_bin_reset_video_src_caps (GstWrapperCameraBinSrc * self,
GstCaps * new_filter_caps)
{
GST_DEBUG_OBJECT (self, "Resetting src caps to %" GST_PTR_FORMAT,
new_filter_caps);
if (self->src_vid_src) {
GstCaps *src_neg_caps; /* negotiated caps on src_filter */
gboolean ret = FALSE;
/* After pipe was negotiated src_filter do not have any filter caps.
2015-04-24 17:13:16 +00:00
* In this situation we should compare negotiated caps on capsfilter pad
* with requested range of caps. If one of this caps intersect,
* then we can avoid reseting.
*/
src_neg_caps = gst_pad_get_current_caps (self->srcfilter_pad);
if (src_neg_caps && new_filter_caps && gst_caps_is_fixed (new_filter_caps))
ret = gst_caps_can_intersect (src_neg_caps, new_filter_caps);
else if (new_filter_caps == NULL) {
/* If new_filter_caps = NULL, then some body wont to empty
* capsfilter (set to ANY). In this case we will need to reset pipe,
* but if capsfilter is actually empthy, then we can avoid
* one more reseting.
*/
GstCaps *old_filter_caps; /* range of caps on capsfilter */
g_object_get (G_OBJECT (self->src_filter),
"caps", &old_filter_caps, NULL);
ret = gst_caps_is_any (old_filter_caps);
gst_caps_unref (old_filter_caps);
}
if (src_neg_caps)
gst_caps_unref (src_neg_caps);
if (ret) {
GST_DEBUG_OBJECT (self, "Negotiated caps on srcfilter intersect "
"with requested caps, do not reset it.");
return;
}
set_capsfilter_caps (self, new_filter_caps);
}
}
static void
gst_wrapper_camera_bin_src_set_output (GstWrapperCameraBinSrc * self,
GstPad * old_pad, GstPad * output_pad)
{
GstQuery *drain = gst_query_new_drain ();
gst_pad_peer_query (self->src_pad, drain);
gst_query_unref (drain);
if (old_pad)
gst_ghost_pad_set_target (GST_GHOST_PAD (old_pad), NULL);
if (output_pad)
gst_ghost_pad_set_target (GST_GHOST_PAD (output_pad), self->src_pad);
}
/**
* gst_wrapper_camera_bin_src_imgsrc_probe:
*
* Buffer probe called before sending each buffer to image queue.
*/
2011-12-23 19:33:45 +00:00
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);
2011-12-23 19:33:45 +00:00
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));
2012-01-19 10:34:26 +00:00
g_mutex_lock (&camerasrc->capturing_mutex);
if (self->image_capture_count > 0) {
GstSample *sample;
GstCaps *caps;
2011-12-23 19:33:45 +00:00
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) {
GstCaps *anycaps = gst_caps_new_any ();
/* Get back to viewfinder */
wrappercamerabinsrc: Rework cropping for zoom and dimension reduction wrappercamerabinsrc has a videocrop element to be used for zooming and for cropping when input caps is different when used with the GstPhotography interface. The zooming part needs the following elements: capsfilter ! videocrop ! videoscale ! capsfilter The capsfilters should always have the same caps to ensure the zooming is done and preserves dimensions, unless when it is needed to do more cropping due to input dimensions those caps need to be modified accordingly to preserve the output dimensions. This, however, makes it hard to get caps negotiation to work properly as we need to have different caps in the capsfilters to account for the extra cropping needed. It could be simple for fixed caps but it gets tricky with unfixed ones. To solve this, this patch splits the zooming and dimension reduction cropping into 2 separate videocrop elements. The first one does the dimension cropping, which is only needed when the GstPhotography API is used and the source provides a caps that is different than what is requested, while the second is dedicated to zoom crop only. The first part of the pipeline goes from: src ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter to src ! videocrop ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter It might add an extra overhead in the image capture as the image might need to be cropped twice but this can be solved by enabling videocrop to use crop metas so only the later one does the real cropping. It also makes the code a bit simpler.
2015-04-24 17:19:50 +00:00
gst_wrapper_camera_bin_src_reset_src_zoom (self);
gst_wrapper_camera_bin_reset_video_src_caps (self, anycaps);
gst_wrapper_camera_bin_src_set_output (self, self->imgsrc, self->vfsrc);
gst_base_camera_src_finish_capture (camerasrc);
gst_caps_unref (anycaps);
}
}
2012-01-19 10:34:26 +00:00
g_mutex_unlock (&camerasrc->capturing_mutex);
return ret;
}
/**
* gst_wrapper_camera_bin_src_vidsrc_probe:
*
* Buffer probe called before sending each buffer to video queue.
*/
2011-12-23 19:33:45 +00:00
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);
2011-12-23 19:33:45 +00:00
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 */
2012-01-19 10:34:26 +00:00
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);
2011-12-23 19:33:45 +00:00
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_pad_unlink (self->src_pad, self->video_tee_sink);
gst_wrapper_camera_bin_src_set_output (self, self->vfsrc, self->vfsrc);
gst_base_camera_src_finish_capture (camerasrc);
} else {
2011-12-23 19:33:45 +00:00
ret = GST_PAD_PROBE_OK;
}
2012-01-19 10:34:26 +00:00
g_mutex_unlock (&camerasrc->capturing_mutex);
return ret;
}
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);
if (caps)
gst_caps_unref (caps);
};
static void
gst_wrapper_camera_bin_src_max_zoom_cb (GObject * self, GParamSpec * pspec,
gpointer user_data)
{
GstBaseCameraSrc *bcamsrc = (GstBaseCameraSrc *) user_data;
g_object_get (self, "max-zoom", &bcamsrc->max_zoom, NULL);
g_object_notify (G_OBJECT (bcamsrc), "max-zoom");
}
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);
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:
ret = gst_pad_event_default (pad, parent, event);
break;
}
return ret;
}
/**
* check_and_replace_src
* @self: #GstWrapperCamerabinSrcCameraSrc object
*
* Checks if the current videosrc needs to be replaced
*/
static gboolean
check_and_replace_src (GstWrapperCameraBinSrc * self)
{
GstBin *cbin = GST_BIN_CAST (self);
GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC_CAST (self);
if (self->src_vid_src && self->src_vid_src == self->app_vid_src) {
GST_DEBUG_OBJECT (self, "No need to change current videosrc");
return TRUE;
}
if (self->src_vid_src) {
GST_DEBUG_OBJECT (self, "Removing old video source");
if (self->src_max_zoom_signal_id) {
g_signal_handler_disconnect (self->src_vid_src,
self->src_max_zoom_signal_id);
self->src_max_zoom_signal_id = 0;
}
if (self->src_event_probe_id) {
GstPad *pad;
pad = gst_element_get_static_pad (self->src_vid_src, "src");
gst_pad_remove_probe (pad, self->src_event_probe_id);
gst_object_unref (pad);
self->src_event_probe_id = 0;
}
gst_bin_remove (GST_BIN_CAST (self), self->src_vid_src);
self->src_vid_src = NULL;
}
GST_DEBUG_OBJECT (self, "Adding new video source");
/* 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 fail;
}
if (!gst_bin_add (cbin, self->src_vid_src)) {
goto fail;
}
/* check if we already have the next element to link to */
if (self->src_crop) {
if (!gst_element_link_pads (self->src_vid_src, "src", self->src_crop,
"sink")) {
goto fail;
}
}
/* 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")) {
self->src_max_zoom_signal_id =
g_signal_connect (G_OBJECT (self->src_vid_src), "notify::max-zoom",
(GCallback) gst_wrapper_camera_bin_src_max_zoom_cb, bcamsrc);
}
return TRUE;
fail:
if (self->src_vid_src)
gst_element_set_state (self->src_vid_src, GST_STATE_NULL);
return FALSE;
}
/**
* 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
*
* 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 *filter_csp;
GstElement *src_csp;
GstElement *capsfilter;
GstElement *video_recording_tee;
gboolean ret = FALSE;
GstPad *tee_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");
wrappercamerabinsrc: Rework cropping for zoom and dimension reduction wrappercamerabinsrc has a videocrop element to be used for zooming and for cropping when input caps is different when used with the GstPhotography interface. The zooming part needs the following elements: capsfilter ! videocrop ! videoscale ! capsfilter The capsfilters should always have the same caps to ensure the zooming is done and preserves dimensions, unless when it is needed to do more cropping due to input dimensions those caps need to be modified accordingly to preserve the output dimensions. This, however, makes it hard to get caps negotiation to work properly as we need to have different caps in the capsfilters to account for the extra cropping needed. It could be simple for fixed caps but it gets tricky with unfixed ones. To solve this, this patch splits the zooming and dimension reduction cropping into 2 separate videocrop elements. The first one does the dimension cropping, which is only needed when the GstPhotography API is used and the source provides a caps that is different than what is requested, while the second is dedicated to zoom crop only. The first part of the pipeline goes from: src ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter to src ! videocrop ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter It might add an extra overhead in the image capture as the image might need to be cropped twice but this can be solved by enabling videocrop to use crop metas so only the later one does the real cropping. It also makes the code a bit simpler.
2015-04-24 17:19:50 +00:00
if (!(self->src_crop =
gst_camerabin_create_and_add_element (cbin, "videocrop",
"src-crop")))
goto done;
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 */
self->srcfilter_pad = gst_element_get_static_pad (self->src_filter, "src");
g_signal_connect (self->srcfilter_pad, "notify::caps",
G_CALLBACK (gst_wrapper_camera_bin_src_caps_cb), self);
if (!(self->digitalzoom = g_object_new (GST_TYPE_DIGITAL_ZOOM, NULL))) {
GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN,
(_("Digitalzoom element cound't be created")), (NULL));
goto done;
}
if (!gst_camerabin_add_element_full (GST_BIN_CAST (self), NULL,
self->digitalzoom, "sink"))
goto done;
/* keep a 'tee' element that has 2 source pads, one is linked to the
* vidsrc pad and the other is linked as needed to the viewfinder
* when video recording is hapenning */
video_recording_tee = gst_element_factory_make ("tee", "video_rec_tee");
gst_bin_add (GST_BIN_CAST (self), video_recording_tee); /* TODO check returns */
self->video_tee_vf_pad =
gst_element_get_request_pad (video_recording_tee, "src_%u");
self->video_tee_sink =
gst_element_get_static_pad (video_recording_tee, "sink");
tee_pad = gst_element_get_request_pad (video_recording_tee, "src_%u");
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vidsrc), tee_pad);
gst_object_unref (tee_pad);
/* viewfinder pad */
self->src_pad = gst_element_get_static_pad (self->digitalzoom, "src");
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vfsrc), self->src_pad);
gst_pad_set_active (self->vfsrc, TRUE);
gst_pad_set_active (self->imgsrc, TRUE); /* XXX ??? */
gst_pad_set_active (self->vidsrc, TRUE); /* XXX ??? */
gst_pad_add_probe (self->imgsrc, GST_PAD_PROBE_TYPE_BUFFER,
gst_wrapper_camera_bin_src_imgsrc_probe, self, NULL);
gst_pad_add_probe (self->video_tee_sink, GST_PAD_PROBE_TYPE_BUFFER,
gst_wrapper_camera_bin_src_vidsrc_probe, self, NULL);
}
/* 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)) {
gst_object_unref (src_csp);
gst_object_unref (capsfilter);
goto done;
}
gst_object_unref (src_csp);
gst_object_unref (capsfilter);
}
}
ret = TRUE;
self->elements_created = TRUE;
done:
return ret;
}
/**
* adapt_image_capture:
* @self: camerasrc object
* @in_caps: caps object that describes incoming image format
*
* Adjust capsfilters and crop according image capture caps if necessary.
* The captured image format from video source might be different from
* what application requested, so we can try to fix that in camerabin.
*
*/
static void
adapt_image_capture (GstWrapperCameraBinSrc * self, GstCaps * in_caps)
{
GstStructure *in_st, *req_st;
gint in_width = 0, in_height = 0, req_width = 0, req_height = 0, crop = 0;
gdouble ratio_w, ratio_h;
GST_LOG_OBJECT (self, "in caps: %" GST_PTR_FORMAT, in_caps);
GST_LOG_OBJECT (self, "requested caps: %" GST_PTR_FORMAT,
self->image_capture_caps);
in_st = gst_caps_get_structure (in_caps, 0);
gst_structure_get_int (in_st, "width", &in_width);
gst_structure_get_int (in_st, "height", &in_height);
req_st = gst_caps_get_structure (self->image_capture_caps, 0);
gst_structure_get_int (req_st, "width", &req_width);
gst_structure_get_int (req_st, "height", &req_height);
GST_INFO_OBJECT (self, "we requested %dx%d, and got %dx%d", req_width,
req_height, in_width, in_height);
/* Crop if requested aspect ratio differs from incoming frame aspect ratio */
wrappercamerabinsrc: Rework cropping for zoom and dimension reduction wrappercamerabinsrc has a videocrop element to be used for zooming and for cropping when input caps is different when used with the GstPhotography interface. The zooming part needs the following elements: capsfilter ! videocrop ! videoscale ! capsfilter The capsfilters should always have the same caps to ensure the zooming is done and preserves dimensions, unless when it is needed to do more cropping due to input dimensions those caps need to be modified accordingly to preserve the output dimensions. This, however, makes it hard to get caps negotiation to work properly as we need to have different caps in the capsfilters to account for the extra cropping needed. It could be simple for fixed caps but it gets tricky with unfixed ones. To solve this, this patch splits the zooming and dimension reduction cropping into 2 separate videocrop elements. The first one does the dimension cropping, which is only needed when the GstPhotography API is used and the source provides a caps that is different than what is requested, while the second is dedicated to zoom crop only. The first part of the pipeline goes from: src ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter to src ! videocrop ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter It might add an extra overhead in the image capture as the image might need to be cropped twice but this can be solved by enabling videocrop to use crop metas so only the later one does the real cropping. It also makes the code a bit simpler.
2015-04-24 17:19:50 +00:00
if (self->src_crop) {
gint base_crop_top = 0, base_crop_bottom = 0;
gint base_crop_left = 0, base_crop_right = 0;
ratio_w = (gdouble) in_width / req_width;
ratio_h = (gdouble) in_height / req_height;
if (ratio_w < ratio_h) {
crop = in_height - (req_height * ratio_w);
wrappercamerabinsrc: Rework cropping for zoom and dimension reduction wrappercamerabinsrc has a videocrop element to be used for zooming and for cropping when input caps is different when used with the GstPhotography interface. The zooming part needs the following elements: capsfilter ! videocrop ! videoscale ! capsfilter The capsfilters should always have the same caps to ensure the zooming is done and preserves dimensions, unless when it is needed to do more cropping due to input dimensions those caps need to be modified accordingly to preserve the output dimensions. This, however, makes it hard to get caps negotiation to work properly as we need to have different caps in the capsfilters to account for the extra cropping needed. It could be simple for fixed caps but it gets tricky with unfixed ones. To solve this, this patch splits the zooming and dimension reduction cropping into 2 separate videocrop elements. The first one does the dimension cropping, which is only needed when the GstPhotography API is used and the source provides a caps that is different than what is requested, while the second is dedicated to zoom crop only. The first part of the pipeline goes from: src ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter to src ! videocrop ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter It might add an extra overhead in the image capture as the image might need to be cropped twice but this can be solved by enabling videocrop to use crop metas so only the later one does the real cropping. It also makes the code a bit simpler.
2015-04-24 17:19:50 +00:00
base_crop_top = crop / 2;
base_crop_bottom = crop / 2;
} else {
crop = in_width - (req_width * ratio_h);
wrappercamerabinsrc: Rework cropping for zoom and dimension reduction wrappercamerabinsrc has a videocrop element to be used for zooming and for cropping when input caps is different when used with the GstPhotography interface. The zooming part needs the following elements: capsfilter ! videocrop ! videoscale ! capsfilter The capsfilters should always have the same caps to ensure the zooming is done and preserves dimensions, unless when it is needed to do more cropping due to input dimensions those caps need to be modified accordingly to preserve the output dimensions. This, however, makes it hard to get caps negotiation to work properly as we need to have different caps in the capsfilters to account for the extra cropping needed. It could be simple for fixed caps but it gets tricky with unfixed ones. To solve this, this patch splits the zooming and dimension reduction cropping into 2 separate videocrop elements. The first one does the dimension cropping, which is only needed when the GstPhotography API is used and the source provides a caps that is different than what is requested, while the second is dedicated to zoom crop only. The first part of the pipeline goes from: src ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter to src ! videocrop ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter It might add an extra overhead in the image capture as the image might need to be cropped twice but this can be solved by enabling videocrop to use crop metas so only the later one does the real cropping. It also makes the code a bit simpler.
2015-04-24 17:19:50 +00:00
base_crop_left = crop / 2;
base_crop_right += crop / 2;
}
GST_INFO_OBJECT (self,
"setting base crop: left:%d, right:%d, top:%d, bottom:%d",
wrappercamerabinsrc: Rework cropping for zoom and dimension reduction wrappercamerabinsrc has a videocrop element to be used for zooming and for cropping when input caps is different when used with the GstPhotography interface. The zooming part needs the following elements: capsfilter ! videocrop ! videoscale ! capsfilter The capsfilters should always have the same caps to ensure the zooming is done and preserves dimensions, unless when it is needed to do more cropping due to input dimensions those caps need to be modified accordingly to preserve the output dimensions. This, however, makes it hard to get caps negotiation to work properly as we need to have different caps in the capsfilters to account for the extra cropping needed. It could be simple for fixed caps but it gets tricky with unfixed ones. To solve this, this patch splits the zooming and dimension reduction cropping into 2 separate videocrop elements. The first one does the dimension cropping, which is only needed when the GstPhotography API is used and the source provides a caps that is different than what is requested, while the second is dedicated to zoom crop only. The first part of the pipeline goes from: src ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter to src ! videocrop ! videoconvert ! capsfilter ! videocrop ! videoscale ! capsfilter It might add an extra overhead in the image capture as the image might need to be cropped twice but this can be solved by enabling videocrop to use crop metas so only the later one does the real cropping. It also makes the code a bit simpler.
2015-04-24 17:19:50 +00:00
base_crop_left, base_crop_right, base_crop_top, base_crop_bottom);
g_object_set (G_OBJECT (self->src_crop),
"top", base_crop_top, "bottom", base_crop_bottom,
"left", base_crop_left, "right", base_crop_right, NULL);
}
/* Update capsfilters */
set_capsfilter_caps (self, self->image_capture_caps);
}
/**
* 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_can_intersect (self->image_capture_caps, caps)) {
adapt_image_capture (self, caps);
} else {
set_capsfilter_caps (self, self->image_capture_caps);
}
}
static GstPadProbeReturn
start_image_capture (GstPad * pad, GstPadProbeInfo * info, gpointer udata)
{
GstWrapperCameraBinSrc *self = udata;
GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (self);
GstPhotography *photography =
(GstPhotography *) gst_bin_get_by_interface (GST_BIN_CAST (bcamsrc),
GST_TYPE_PHOTOGRAPHY);
GstCaps *caps;
GST_DEBUG_OBJECT (self, "Starting image capture");
/* unlink from the viewfinder, link to the imagesrc pad to wait for
* the buffer to pass */
gst_wrapper_camera_bin_src_set_output (self, self->vfsrc, self->imgsrc);
if (self->image_renegotiate) {
self->image_renegotiate = FALSE;
/* clean capsfilter caps so they don't interfere here */
g_object_set (self->src_filter, "caps", NULL, NULL);
caps = gst_pad_get_allowed_caps (self->imgsrc);
gst_caps_replace (&self->image_capture_caps, caps);
gst_caps_unref (caps);
/* We caught this event in the src pad event handler and now we want to
* actually push it upstream */
gst_pad_mark_reconfigure (pad);
}
if (photography) {
GST_DEBUG_OBJECT (self, "prepare image capture caps %" GST_PTR_FORMAT,
self->image_capture_caps);
if (!gst_photography_prepare_for_capture (photography,
(GstPhotographyCapturePrepared) img_capture_prepared,
self->image_capture_caps, self)) {
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
("Failed to prepare image capture"),
("Prepare capture call didn't succeed for the given caps"));
self->image_capture_count = 0;
}
gst_object_unref (photography);
} else {
gst_wrapper_camera_bin_reset_video_src_caps (self,
self->image_capture_caps);
}
self->image_capture_probe = 0;
return GST_PAD_PROBE_REMOVE;
}
static GstPadProbeReturn
start_video_capture (GstPad * pad, GstPadProbeInfo * info, gpointer udata)
{
GstWrapperCameraBinSrc *self = udata;
GstCaps *caps;
GST_DEBUG_OBJECT (self, "Starting video capture");
if (self->video_renegotiate) {
GstCaps *anycaps = gst_caps_new_any ();
gst_wrapper_camera_bin_reset_video_src_caps (self, anycaps);
gst_caps_unref (anycaps);
/* clean capsfilter caps so they don't interfere here */
g_object_set (self->src_filter, "caps", NULL, NULL);
}
/* unlink from the viewfinder, link to the imagesrc pad, wait for
* the buffer to pass */
gst_wrapper_camera_bin_src_set_output (self, self->vfsrc, NULL);
gst_pad_link (self->src_pad, self->video_tee_sink);
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vfsrc),
self->video_tee_vf_pad);
if (self->video_renegotiate) {
GST_DEBUG_OBJECT (self, "Getting allowed videosrc caps");
caps = gst_pad_get_allowed_caps (self->vidsrc);
GST_DEBUG_OBJECT (self, "Video src caps %" GST_PTR_FORMAT, caps);
self->video_renegotiate = FALSE;
gst_wrapper_camera_bin_reset_video_src_caps (self, caps);
gst_caps_unref (caps);
}
self->video_capture_probe = 0;
return GST_PAD_PROBE_REMOVE;
}
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);
2010-12-17 01:49:24 +00:00
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (bcamsrc);
if (mode == MODE_IMAGE) {
self->image_renegotiate = TRUE;
} else {
self->video_renegotiate = TRUE;
}
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);
}
gst_object_unref (photography);
} else {
GstCaps *anycaps = gst_caps_new_any ();
gst_wrapper_camera_bin_reset_video_src_caps (self, anycaps);
gst_caps_unref (anycaps);
}
return TRUE;
}
static gboolean
set_videosrc_zoom (GstWrapperCameraBinSrc * self, gfloat zoom)
{
gboolean ret = FALSE;
if (g_object_class_find_property (G_OBJECT_GET_CLASS (self->src_vid_src),
"zoom")) {
g_object_set (G_OBJECT (self->src_vid_src), "zoom", zoom, NULL);
ret = TRUE;
}
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)) {
g_object_set (self->digitalzoom, "zoom", (gfloat) 1.0, NULL);
GST_INFO_OBJECT (self, "zoom set using videosrc");
} else {
GST_INFO_OBJECT (self, "zoom set using digitalzoom");
g_object_set (self->digitalzoom, "zoom", zoom, NULL);
}
}
/**
* update_aspect_filter:
* @self: camerasrc object
* @new_caps: new caps of next buffers arriving to view finder sink element
*
* Updates aspect ratio capsfilter to maintain aspect ratio, if we need to
* scale frames for showing them in view finder.
*/
static void
update_aspect_filter (GstWrapperCameraBinSrc * self, GstCaps * new_caps)
{
/* XXX why not instead add a preserve-aspect-ratio property to videoscale? */
#if 0
if (camera->flags & GST_CAMERABIN_FLAG_VIEWFINDER_SCALE) {
GstCaps *sink_caps, *ar_caps;
GstStructure *st;
gint in_w = 0, in_h = 0, sink_w = 0, sink_h = 0, target_w = 0, target_h = 0;
gdouble ratio_w, ratio_h;
GstPad *sink_pad;
const GValue *range;
sink_pad = gst_element_get_static_pad (camera->view_sink, "sink");
if (sink_pad) {
sink_caps = gst_pad_get_caps (sink_pad);
gst_object_unref (sink_pad);
if (sink_caps) {
if (!gst_caps_is_any (sink_caps)) {
GST_DEBUG_OBJECT (camera, "sink element caps %" GST_PTR_FORMAT,
sink_caps);
/* Get maximum resolution that view finder sink accepts */
st = gst_caps_get_structure (sink_caps, 0);
if (gst_structure_has_field_typed (st, "width", GST_TYPE_INT_RANGE)) {
range = gst_structure_get_value (st, "width");
sink_w = gst_value_get_int_range_max (range);
}
if (gst_structure_has_field_typed (st, "height", GST_TYPE_INT_RANGE)) {
range = gst_structure_get_value (st, "height");
sink_h = gst_value_get_int_range_max (range);
}
GST_DEBUG_OBJECT (camera, "sink element accepts max %dx%d", sink_w,
sink_h);
/* Get incoming frames' resolution */
if (sink_h && sink_w) {
st = gst_caps_get_structure (new_caps, 0);
gst_structure_get_int (st, "width", &in_w);
gst_structure_get_int (st, "height", &in_h);
GST_DEBUG_OBJECT (camera, "new caps with %dx%d", in_w, in_h);
}
}
gst_caps_unref (sink_caps);
}
}
/* If we get bigger frames than view finder sink accepts, then we scale.
If we scale we need to adjust aspect ratio capsfilter caps in order
to maintain aspect ratio while scaling. */
if (in_w && in_h && (in_w > sink_w || in_h > sink_h)) {
ratio_w = (gdouble) sink_w / in_w;
ratio_h = (gdouble) sink_h / in_h;
if (ratio_w < ratio_h) {
target_w = sink_w;
target_h = (gint) (ratio_w * in_h);
} else {
target_w = (gint) (ratio_h * in_w);
target_h = sink_h;
}
GST_DEBUG_OBJECT (camera, "setting %dx%d filter to maintain aspect ratio",
target_w, target_h);
ar_caps = gst_caps_copy (new_caps);
gst_caps_set_simple (ar_caps, "width", G_TYPE_INT, target_w, "height",
G_TYPE_INT, target_h, NULL);
} else {
GST_DEBUG_OBJECT (camera, "no scaling");
ar_caps = new_caps;
}
GST_DEBUG_OBJECT (camera, "aspect ratio filter caps %" GST_PTR_FORMAT,
ar_caps);
g_object_set (G_OBJECT (camera->aspect_filter), "caps", ar_caps, NULL);
if (ar_caps != new_caps)
gst_caps_unref (ar_caps);
}
#endif
}
/**
* set_capsfilter_caps:
* @self: camerasrc object
* @new_caps: pointer to caps object to set
*
* Set given caps to camerabin capsfilters.
*/
static void
set_capsfilter_caps (GstWrapperCameraBinSrc * self, GstCaps * new_caps)
{
GST_INFO_OBJECT (self, "new_caps:%" GST_PTR_FORMAT, new_caps);
/* Update zoom */
gst_base_camera_src_setup_zoom (GST_BASE_CAMERA_SRC (self));
/* Update capsfilters */
g_object_set (G_OBJECT (self->src_filter), "caps", new_caps, NULL);
update_aspect_filter (self, new_caps);
GST_INFO_OBJECT (self, "updated");
}
static gboolean
gst_wrapper_camera_bin_src_start_capture (GstBaseCameraSrc * camerasrc)
{
GstWrapperCameraBinSrc *src = GST_WRAPPER_CAMERA_BIN_SRC (camerasrc);
GstPad *pad;
gboolean ret = TRUE;
pad = gst_element_get_static_pad (src->src_vid_src, "src");
/* TODO should we access this directly? Maybe a macro is better? */
2010-12-17 01:49:24 +00:00
if (src->mode == MODE_IMAGE) {
src->image_capture_count = 1;
src->image_capture_probe =
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_IDLE, start_image_capture,
src, NULL);
2010-12-17 01:49:24 +00:00
} else if (src->mode == MODE_VIDEO) {
if (src->video_rec_status == GST_VIDEO_RECORDING_STATUS_DONE) {
src->video_rec_status = GST_VIDEO_RECORDING_STATUS_STARTING;
src->video_capture_probe =
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_IDLE, start_video_capture,
src, NULL);
}
} else {
g_assert_not_reached ();
ret = FALSE;
}
gst_object_unref (pad);
return ret;
}
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? */
2010-12-17 01:49:24 +00:00
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 {
/* TODO check what happens when we try to stop a image capture */
}
}
static GstStateChangeReturn
gst_wrapper_camera_bin_src_change_state (GstElement * element,
GstStateChange trans)
{
GstStateChangeReturn ret;
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;
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_class_init (GstWrapperCameraBinSrcClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseCameraSrcClass *gstbasecamerasrc_class;
gobject_class = G_OBJECT_CLASS (klass);
gstelement_class = GST_ELEMENT_CLASS (klass);
gstbasecamerasrc_class = GST_BASE_CAMERA_SRC_CLASS (klass);
gobject_class->dispose = gst_wrapper_camera_bin_src_dispose;
gobject_class->finalize =
(GObjectFinalizeFunc) gst_wrapper_camera_bin_src_finalize;
gobject_class->set_property = gst_wrapper_camera_bin_src_set_property;
gobject_class->get_property = gst_wrapper_camera_bin_src_get_property;
/* g_object_class_install_property .... */
g_object_class_install_property (gobject_class, PROP_VIDEO_SRC,
g_param_spec_object ("video-source", "Video source",
"The video source element to be used",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_VIDEO_SRC_FILTER,
g_param_spec_object ("video-source-filter", "Video source filter",
"Optional video source filter element",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstelement_class->change_state = gst_wrapper_camera_bin_src_change_state;
gstbasecamerasrc_class->construct_pipeline =
gst_wrapper_camera_bin_src_construct_pipeline;
gstbasecamerasrc_class->set_zoom = gst_wrapper_camera_bin_src_set_zoom;
gstbasecamerasrc_class->set_mode = gst_wrapper_camera_bin_src_set_mode;
gstbasecamerasrc_class->start_capture =
gst_wrapper_camera_bin_src_start_capture;
gstbasecamerasrc_class->stop_capture =
gst_wrapper_camera_bin_src_stop_capture;
2011-12-23 19:33:45 +00:00
GST_DEBUG_CATEGORY_INIT (wrapper_camera_bin_src_debug, "wrappercamerabinsrc",
0, "wrapper camera src");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&vfsrc_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&imgsrc_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&vidsrc_template));
gst_element_class_set_static_metadata (gstelement_class,
2011-12-23 19:33:45 +00:00
"Wrapper camera src element for camerabin2", "Source/Video",
"Wrapper camera src element for camerabin2",
"Thiago Santos <thiago.sousa.santos@collabora.com>");
}
static void
2011-12-23 19:33:45 +00:00
gst_wrapper_camera_bin_src_init (GstWrapperCameraBinSrc * self)
{
self->vfsrc =
gst_ghost_pad_new_no_target (GST_BASE_CAMERA_SRC_VIEWFINDER_PAD_NAME,
GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (self), self->vfsrc);
self->imgsrc =
gst_ghost_pad_new_no_target (GST_BASE_CAMERA_SRC_IMAGE_PAD_NAME,
GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (self), self->imgsrc);
self->vidsrc =
gst_ghost_pad_new_no_target (GST_BASE_CAMERA_SRC_VIDEO_PAD_NAME,
GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (self), self->vidsrc);
gst_pad_set_event_function (self->imgsrc,
GST_DEBUG_FUNCPTR (gst_wrapper_camera_bin_src_src_event));
gst_pad_set_event_function (self->vidsrc,
GST_DEBUG_FUNCPTR (gst_wrapper_camera_bin_src_src_event));
/* TODO where are variables reset? */
self->image_capture_count = 0;
self->video_rec_status = GST_VIDEO_RECORDING_STATUS_DONE;
self->video_renegotiate = TRUE;
self->image_renegotiate = TRUE;
2010-12-17 01:49:24 +00:00
self->mode = GST_BASE_CAMERA_SRC_CAST (self)->mode;
self->app_vid_filter = NULL;
}
gboolean
gst_wrapper_camera_bin_src_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "wrappercamerabinsrc", GST_RANK_NONE,
gst_wrapper_camera_bin_src_get_type ());
}