mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-20 23:36:38 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/gst/camerabin2/gstcamerabin2.c
Thiago Santos d25908cf81 camerabin2: Do not segfault on null locations 
Prevent capture from starting when saving location is set to
NULL
2011-05-20 15:25:08 -03:00

1771 lines
61 KiB
C
Raw Blame History

/* GStreamer
* Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-gstcamerabin2
*
* The gstcamerabin2 element does FIXME stuff.
*
* Note that camerabin2 is still UNSTABLE, EXPERIMENTAL and under heavy
* development.
*/
/*
* Detail Topics:
*
* videorecordingbin state management (for now on called 'videobin')
* - The problem: keeping videobin state in sync with camerabin will make it
* go to playing when it might not be used, causing its internal
* filesink to open a file that might be left blank.
* - The solution: videobin state is set to locked upon its creation and camerabin
* registers itself on the notify::ready-for-capture of the src.
* Whenever the src readyness goes to FALSE it means a new
* capture is starting. If we are on video mode, the videobin's
* state is set to NULL and then PLAYING (in between this we
* have room to set the destination filename).
* There is no problem to leave it on playing after an EOS, so
* no action is taken on stop-capture.
*
* - TODO: What happens when an error pops?
* - TODO: Should we split properties in image/video variants? We already do so
* for some of them
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <gst/basecamerabinsrc/gstbasecamerasrc.h>
#include "gstcamerabin2.h"
#include <gst/gst-i18n-plugin.h>
#include <gst/pbutils/pbutils.h>
#define GST_CAMERA_BIN_PROCESSING_INC(c) \
{ \
gint bef = g_atomic_int_exchange_and_add (&c->processing_counter, 1); \
if (bef == 0) \
g_object_notify (G_OBJECT (c), "idle"); \
GST_DEBUG_OBJECT ((c), "Processing counter incremented to: %d", \
bef + 1); \
}
#define GST_CAMERA_BIN_PROCESSING_DEC(c) \
{ \
if (g_atomic_int_dec_and_test (&c->processing_counter)) \
g_object_notify (G_OBJECT (c), "idle"); \
GST_DEBUG_OBJECT ((c), "Processing counter decremented"); \
}
#define GST_CAMERA_BIN_RESET_PROCESSING_COUNTER(c) \
{ \
g_atomic_int_set (&c->processing_counter, 0); \
GST_DEBUG_OBJECT ((c), "Processing counter reset"); \
}
GST_DEBUG_CATEGORY_STATIC (gst_camera_bin_debug);
#define GST_CAT_DEFAULT gst_camera_bin_debug
/* prototypes */
enum
{
PROP_0,
PROP_MODE,
PROP_LOCATION,
PROP_CAMERA_SRC,
PROP_IMAGE_CAPTURE_SUPPORTED_CAPS,
PROP_VIDEO_CAPTURE_SUPPORTED_CAPS,
PROP_IMAGE_CAPTURE_CAPS,
PROP_VIDEO_CAPTURE_CAPS,
PROP_POST_PREVIEWS,
PROP_PREVIEW_CAPS,
PROP_VIDEO_ENCODING_PROFILE,
PROP_IMAGE_FILTER,
PROP_VIDEO_FILTER,
PROP_VIEWFINDER_FILTER,
PROP_PREVIEW_FILTER,
PROP_VIEWFINDER_SINK,
PROP_VIEWFINDER_SUPPORTED_CAPS,
PROP_VIEWFINDER_CAPS,
PROP_AUDIO_SRC,
PROP_MUTE_AUDIO,
PROP_AUDIO_CAPTURE_SUPPORTED_CAPS,
PROP_AUDIO_CAPTURE_CAPS,
PROP_ZOOM,
PROP_MAX_ZOOM,
PROP_IMAGE_ENCODING_PROFILE,
PROP_IDLE
};
enum
{
/* action signals */
START_CAPTURE_SIGNAL,
STOP_CAPTURE_SIGNAL,
/* emit signals */
LAST_SIGNAL
};
static guint camerabin_signals[LAST_SIGNAL];
#define DEFAULT_MODE MODE_IMAGE
#define DEFAULT_VID_LOCATION "vid_%d"
#define DEFAULT_IMG_LOCATION "img_%d"
#define DEFAULT_POST_PREVIEWS TRUE
#define DEFAULT_MUTE_AUDIO FALSE
#define DEFAULT_IDLE TRUE
#define DEFAULT_AUDIO_SRC "autoaudiosrc"
/********************************
* Standard GObject boilerplate *
* and GObject types *
********************************/
static GstPipelineClass *parent_class;
static void gst_camera_bin_class_init (GstCameraBinClass * klass);
static void gst_camera_bin_base_init (gpointer klass);
static void gst_camera_bin_init (GstCameraBin * camera);
static void gst_camera_bin_dispose (GObject * object);
static void gst_camera_bin_finalize (GObject * object);
static void gst_camera_bin_handle_message (GstBin * bin, GstMessage * message);
static gboolean gst_camera_bin_send_event (GstElement * element,
GstEvent * event);
GType
gst_camera_bin_get_type (void)
{
static GType gst_camera_bin_type = 0;
static const GInterfaceInfo camerabin_tagsetter_info = {
NULL,
NULL,
NULL,
};
if (!gst_camera_bin_type) {
static const GTypeInfo gst_camera_bin_info = {
sizeof (GstCameraBinClass),
(GBaseInitFunc) gst_camera_bin_base_init,
NULL,
(GClassInitFunc) gst_camera_bin_class_init,
NULL,
NULL,
sizeof (GstCameraBin),
0,
(GInstanceInitFunc) gst_camera_bin_init,
NULL
};
gst_camera_bin_type =
g_type_register_static (GST_TYPE_PIPELINE, "GstCameraBin2",
&gst_camera_bin_info, 0);
g_type_add_interface_static (gst_camera_bin_type, GST_TYPE_TAG_SETTER,
&camerabin_tagsetter_info);
}
return gst_camera_bin_type;
}
/* GObject class functions */
static void gst_camera_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_camera_bin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
/* Element class functions */
static GstStateChangeReturn
gst_camera_bin_change_state (GstElement * element, GstStateChange trans);
/* Camerabin functions */
static GstEvent *
gst_camera_bin_new_event_renegotiate (void)
{
return gst_event_new_custom (GST_EVENT_CUSTOM_BOTH,
gst_structure_new ("renegotiate", NULL));
}
static void
gst_camera_bin_start_capture (GstCameraBin * camerabin)
{
const GstTagList *taglist;
GST_DEBUG_OBJECT (camerabin, "Received start-capture");
/* check that we have a valid location */
if ((camerabin->mode == MODE_VIDEO && camerabin->video_location == NULL)
|| (camerabin->mode == MODE_IMAGE && camerabin->image_location == NULL)) {
GST_ELEMENT_ERROR (camerabin, RESOURCE, OPEN_WRITE,
(_("File location is set to NULL, please set it to a valid filename")),
(NULL));
return;
}
GST_CAMERA_BIN_PROCESSING_INC (camerabin);
if (camerabin->mode == MODE_VIDEO && camerabin->audio_src) {
gst_element_set_state (camerabin->audio_src, GST_STATE_READY);
/* need to reset eos status (pads could be flushing) */
gst_element_set_state (camerabin->audio_queue, GST_STATE_READY);
gst_element_set_state (camerabin->audio_convert, GST_STATE_READY);
gst_element_set_state (camerabin->audio_capsfilter, GST_STATE_READY);
gst_element_set_state (camerabin->audio_volume, GST_STATE_READY);
gst_element_sync_state_with_parent (camerabin->audio_queue);
gst_element_sync_state_with_parent (camerabin->audio_convert);
gst_element_sync_state_with_parent (camerabin->audio_capsfilter);
gst_element_sync_state_with_parent (camerabin->audio_volume);
}
g_signal_emit_by_name (camerabin->src, "start-capture", NULL);
if (camerabin->mode == MODE_VIDEO && camerabin->audio_src)
gst_element_set_state (camerabin->audio_src, GST_STATE_PLAYING);
/*
* We have to push tags after start capture because the video elements
* might be flushing from the previous capture and are reset only on the
* notify from ready for capture going to FALSE
*/
taglist = gst_tag_setter_get_tag_list (GST_TAG_SETTER (camerabin));
if (taglist) {
GstPad *active_pad;
GST_DEBUG_OBJECT (camerabin, "Pushing tags from application: %"
GST_PTR_FORMAT, taglist);
if (camerabin->mode == MODE_IMAGE) {
active_pad = gst_element_get_static_pad (camerabin->src,
GST_BASE_CAMERA_SRC_IMAGE_PAD_NAME);
} else {
active_pad = gst_element_get_static_pad (camerabin->src,
GST_BASE_CAMERA_SRC_VIDEO_PAD_NAME);
}
gst_pad_push_event (active_pad,
gst_event_new_tag (gst_tag_list_copy (taglist)));
gst_object_unref (active_pad);
}
}
static void
gst_camera_bin_stop_capture (GstCameraBin * camerabin)
{
GST_DEBUG_OBJECT (camerabin, "Received stop-capture");
if (camerabin->src)
g_signal_emit_by_name (camerabin->src, "stop-capture", NULL);
if (camerabin->mode == MODE_VIDEO && camerabin->audio_src) {
gst_element_send_event (camerabin->audio_src, gst_event_new_eos ());
}
}
static void
gst_camera_bin_change_mode (GstCameraBin * camerabin, gint mode)
{
if (mode == camerabin->mode)
return;
GST_DEBUG_OBJECT (camerabin, "Changing mode to %d", mode);
/* stop any ongoing capture */
gst_camera_bin_stop_capture (camerabin);
camerabin->mode = mode;
if (camerabin->src)
g_object_set (camerabin->src, "mode", mode, NULL);
}
static void
gst_camera_bin_src_notify_readyforcapture (GObject * obj, GParamSpec * pspec,
gpointer user_data)
{
GstCameraBin *camera = GST_CAMERA_BIN_CAST (user_data);
gboolean ready;
g_object_get (camera->src, "ready-for-capture", &ready, NULL);
if (!ready) {
gchar *location = NULL;
if (camera->mode == MODE_VIDEO) {
/* a video recording is about to start, we reset the videobin to clear eos/flushing state
* also need to clean the queue ! capsfilter before it */
gst_element_set_state (camera->videosink, GST_STATE_NULL);
gst_element_set_state (camera->video_encodebin, GST_STATE_NULL);
gst_element_set_state (camera->videobin_capsfilter, GST_STATE_NULL);
gst_element_set_state (camera->videobin_queue, GST_STATE_NULL);
location =
g_strdup_printf (camera->video_location, camera->video_index++);
GST_DEBUG_OBJECT (camera, "Switching videobin location to %s", location);
g_object_set (camera->videosink, "location", location, NULL);
g_free (location);
gst_element_set_state (camera->videosink, GST_STATE_PLAYING);
gst_element_set_state (camera->video_encodebin, GST_STATE_PLAYING);
gst_element_set_state (camera->videobin_capsfilter, GST_STATE_PLAYING);
gst_element_set_state (camera->videobin_queue, GST_STATE_PLAYING);
} else if (camera->mode == MODE_IMAGE) {
gst_element_set_state (camera->imagesink, GST_STATE_NULL);
gst_element_set_state (camera->image_encodebin, GST_STATE_NULL);
gst_element_set_state (camera->imagebin_queue, GST_STATE_NULL);
gst_element_set_state (camera->imagebin_capsfilter, GST_STATE_NULL);
GST_DEBUG_OBJECT (camera, "Switching imagebin location to %s", location);
g_object_set (camera->imagesink, "location", camera->image_location,
NULL);
gst_element_set_state (camera->imagesink, GST_STATE_PLAYING);
gst_element_set_state (camera->image_encodebin, GST_STATE_PLAYING);
gst_element_set_state (camera->imagebin_capsfilter, GST_STATE_PLAYING);
gst_element_set_state (camera->imagebin_queue, GST_STATE_PLAYING);
}
}
}
static void
gst_camera_bin_dispose (GObject * object)
{
GstCameraBin *camerabin = GST_CAMERA_BIN_CAST (object);
g_free (camerabin->image_location);
g_free (camerabin->video_location);
if (camerabin->src_capture_notify_id)
g_signal_handler_disconnect (camerabin->src,
camerabin->src_capture_notify_id);
if (camerabin->src)
gst_object_unref (camerabin->src);
if (camerabin->user_src)
gst_object_unref (camerabin->user_src);
if (camerabin->audio_src)
gst_object_unref (camerabin->audio_src);
if (camerabin->user_audio_src)
gst_object_unref (camerabin->user_audio_src);
if (camerabin->audio_capsfilter)
gst_object_unref (camerabin->audio_capsfilter);
if (camerabin->audio_queue)
gst_object_unref (camerabin->audio_queue);
if (camerabin->audio_convert)
gst_object_unref (camerabin->audio_convert);
if (camerabin->audio_volume)
gst_object_unref (camerabin->audio_volume);
if (camerabin->viewfinderbin)
gst_object_unref (camerabin->viewfinderbin);
if (camerabin->viewfinderbin_queue)
gst_object_unref (camerabin->viewfinderbin_queue);
if (camerabin->viewfinderbin_capsfilter)
gst_object_unref (camerabin->viewfinderbin_capsfilter);
if (camerabin->video_encodebin_signal_id)
g_signal_handler_disconnect (camerabin->video_encodebin,
camerabin->video_encodebin_signal_id);
if (camerabin->videosink_probe) {
GstPad *pad = gst_element_get_static_pad (camerabin->videosink, "sink");
gst_pad_remove_data_probe (pad, camerabin->videosink_probe);
gst_object_unref (pad);
}
if (camerabin->videosink)
gst_object_unref (camerabin->videosink);
if (camerabin->video_encodebin)
gst_object_unref (camerabin->video_encodebin);
if (camerabin->videobin_queue)
gst_object_unref (camerabin->videobin_queue);
if (camerabin->videobin_capsfilter)
gst_object_unref (camerabin->videobin_capsfilter);
if (camerabin->image_encodebin_signal_id)
g_signal_handler_disconnect (camerabin->image_encodebin,
camerabin->image_encodebin_signal_id);
if (camerabin->imagesink)
gst_object_unref (camerabin->imagesink);
if (camerabin->image_encodebin)
gst_object_unref (camerabin->image_encodebin);
if (camerabin->imagebin_queue)
gst_object_unref (camerabin->imagebin_queue);
if (camerabin->imagebin_capsfilter)
gst_object_unref (camerabin->imagebin_capsfilter);
if (camerabin->video_filter)
gst_object_unref (camerabin->video_filter);
if (camerabin->image_filter)
gst_object_unref (camerabin->image_filter);
if (camerabin->viewfinder_filter)
gst_object_unref (camerabin->viewfinder_filter);
if (camerabin->user_video_filter)
gst_object_unref (camerabin->user_video_filter);
if (camerabin->user_image_filter)
gst_object_unref (camerabin->user_image_filter);
if (camerabin->user_viewfinder_filter)
gst_object_unref (camerabin->user_viewfinder_filter);
if (camerabin->video_profile)
gst_encoding_profile_unref (camerabin->video_profile);
if (camerabin->image_profile)
gst_encoding_profile_unref (camerabin->image_profile);
if (camerabin->preview_caps)
gst_caps_replace (&camerabin->preview_caps, NULL);
if (camerabin->preview_filter) {
gst_object_unref (camerabin->preview_filter);
camerabin->preview_filter = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_camera_bin_finalize (GObject * object)
{
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_camera_bin_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details_simple (element_class, "CameraBin2",
"Generic/Bin/Camera", "CameraBin2",
"Thiago Santos <thiago.sousa.santos@collabora.co.uk>");
}
static void
gst_camera_bin_class_init (GstCameraBinClass * klass)
{
GObjectClass *object_class;
GstElementClass *element_class;
GstBinClass *bin_class;
parent_class = g_type_class_peek_parent (klass);
object_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
bin_class = GST_BIN_CLASS (klass);
object_class->dispose = gst_camera_bin_dispose;
object_class->finalize = gst_camera_bin_finalize;
object_class->set_property = gst_camera_bin_set_property;
object_class->get_property = gst_camera_bin_get_property;
element_class->change_state = GST_DEBUG_FUNCPTR (gst_camera_bin_change_state);
element_class->send_event = GST_DEBUG_FUNCPTR (gst_camera_bin_send_event);
bin_class->handle_message = gst_camera_bin_handle_message;
klass->start_capture = gst_camera_bin_start_capture;
klass->stop_capture = gst_camera_bin_stop_capture;
/**
* GstCameraBin:mode:
*
* Set the mode of operation: still image capturing or video recording.
*/
g_object_class_install_property (object_class, PROP_MODE,
g_param_spec_enum ("mode", "Mode",
"The capture mode (still image capture or video recording)",
GST_TYPE_CAMERABIN_MODE, DEFAULT_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_LOCATION,
g_param_spec_string ("location", "Location",
"Location to save the captured files. A %d might be used on the"
"filename as a placeholder for a numeric index of the capture."
"Default for images is img_%d and vid_%d for videos",
DEFAULT_IMG_LOCATION, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_CAMERA_SRC,
g_param_spec_object ("camera-src", "Camera source",
"The camera source element to be used. It is only taken into use on"
" the next null to ready transition",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_AUDIO_SRC,
g_param_spec_object ("audio-src", "Audio source",
"The audio source element to be used on video recordings. It is only"
" taken into use on the next null to ready transition",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_MUTE_AUDIO,
g_param_spec_boolean ("mute", "Mute",
"If the audio recording should be muted. Note that this still "
"saves audio data to the resulting file, but they are silent. Use "
"a video-profile without audio to disable audio completely",
DEFAULT_MUTE_AUDIO, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_AUDIO_CAPTURE_SUPPORTED_CAPS,
g_param_spec_boxed ("audio-capture-supported-caps",
"Audio capture supported caps",
"Formats supported for capturing audio represented as GstCaps",
GST_TYPE_CAPS, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_AUDIO_CAPTURE_CAPS,
g_param_spec_boxed ("audio-capture-caps",
"Audio capture caps",
"Format to capture audio for video recording represented as GstCaps",
GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_IMAGE_CAPTURE_SUPPORTED_CAPS,
g_param_spec_boxed ("image-capture-supported-caps",
"Image capture supported caps",
"Formats supported for capturing images represented as GstCaps",
GST_TYPE_CAPS, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_VIDEO_CAPTURE_SUPPORTED_CAPS,
g_param_spec_boxed ("video-capture-supported-caps",
"Video capture supported caps",
"Formats supported for capturing videos represented as GstCaps",
GST_TYPE_CAPS, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_IMAGE_CAPTURE_CAPS,
g_param_spec_boxed ("image-capture-caps",
"Image capture caps",
"Caps for image capture",
GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_VIDEO_CAPTURE_CAPS,
g_param_spec_boxed ("video-capture-caps",
"Video capture caps",
"Caps for video capture",
GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_POST_PREVIEWS,
g_param_spec_boolean ("post-previews", "Post Previews",
"If capture preview images should be posted to the bus",
DEFAULT_POST_PREVIEWS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_PREVIEW_CAPS,
g_param_spec_boxed ("preview-caps", "Preview caps",
"The caps of the preview image to be posted",
GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_VIDEO_ENCODING_PROFILE,
gst_param_spec_mini_object ("video-profile", "Video Profile",
"The GstEncodingProfile to use for video recording. Audio is enabled "
"when this profile supports audio.", GST_TYPE_ENCODING_PROFILE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_IMAGE_FILTER,
g_param_spec_object ("image-filter", "Image filter",
"The element that will process captured image frames. (Should be"
" set on NULL state)",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_VIDEO_FILTER,
g_param_spec_object ("video-filter", "Video filter",
"The element that will process captured video frames. (Should be"
" set on NULL state)",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_VIEWFINDER_FILTER,
g_param_spec_object ("viewfinder-filter", "Viewfinder filter",
"The element that will process frames going to the viewfinder."
" (Should be set on NULL state)",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_PREVIEW_FILTER,
g_param_spec_object ("preview-filter", "Preview filter",
"The element that will process preview buffers."
" (Should be set on NULL state)",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_VIEWFINDER_SINK,
g_param_spec_object ("viewfinder-sink", "Viewfinder sink",
"The video sink of the viewfinder. It is only taken into use"
" on the next null to ready transition",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_VIEWFINDER_CAPS,
g_param_spec_boxed ("viewfinder-caps",
"Viewfinder caps",
"Restricts the caps that can be used on the viewfinder",
GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_ZOOM,
g_param_spec_float ("zoom", "Zoom",
"Digital zoom factor (e.g. 1.5 means 1.5x)", MIN_ZOOM, MAX_ZOOM,
DEFAULT_ZOOM, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_MAX_ZOOM,
g_param_spec_float ("max-zoom", "Maximum zoom level (note: may change "
"depending on resolution/implementation)",
"Digital zoom factor (e.g. 1.5 means 1.5x)", MIN_ZOOM, G_MAXFLOAT,
MAX_ZOOM, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/* TODO
* Review before stable
* - We use a profile for video recording properties and here we have
* elements for image capture. This is slightly inconsistent.
* - One problem with using encodebin for images here is how jifmux
* autoplugging works. We need to give it a higher rank and fix its
* caps (it has image/jpeg on sink and src pads). Preliminary tests
* show that jifmux is picked if image/jpeg is the caps of a container
* profile. So this could work.
* - There seems to be a problem with encodebin for images currently as
* it autoplugs a videorate that ony starts outputing buffers after
* getting the 2nd buffer.
*/
g_object_class_install_property (object_class, PROP_IMAGE_ENCODING_PROFILE,
gst_param_spec_mini_object ("image-profile", "Image Profile",
"The GstEncodingProfile to use for image captures.",
GST_TYPE_ENCODING_PROFILE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_IDLE,
g_param_spec_boolean ("idle", "Idle",
"If camerabin2 is idle (not doing captures).", DEFAULT_IDLE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/* TODO review before going stable
* We have viewfinder-supported-caps that returns the caps that the
* camerasrc can produce on its viewfinder pad, this could easily be
* confused with what the viewfinder-sink accepts.
*
* Do we want to add a 'viewfinder-sink-supported-caps' or maybe change
* the name of this property?
*/
g_object_class_install_property (object_class,
PROP_VIEWFINDER_SUPPORTED_CAPS,
g_param_spec_boxed ("viewfinder-supported-caps",
"Camera source Viewfinder pad supported caps",
"The caps that the camera source can produce on the viewfinder pad",
GST_TYPE_CAPS, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/**
* GstCameraBin::capture-start:
* @camera: the camera bin element
*
* Starts image capture or video recording depending on the Mode.
*/
camerabin_signals[START_CAPTURE_SIGNAL] =
g_signal_new ("start-capture",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstCameraBinClass, start_capture),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
/**
* GstCameraBin::capture-stop:
* @camera: the camera bin element
*/
camerabin_signals[STOP_CAPTURE_SIGNAL] =
g_signal_new ("stop-capture",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstCameraBinClass, stop_capture),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
}
static void
gst_camera_bin_init (GstCameraBin * camera)
{
camera->post_previews = DEFAULT_POST_PREVIEWS;
camera->mode = DEFAULT_MODE;
camera->video_location = g_strdup (DEFAULT_VID_LOCATION);
camera->image_location = g_strdup (DEFAULT_IMG_LOCATION);
camera->viewfinderbin = gst_element_factory_make ("viewfinderbin", "vf-bin");
camera->zoom = DEFAULT_ZOOM;
camera->max_zoom = MAX_ZOOM;
/* capsfilters are created here as we proxy their caps properties and
* this way we avoid having to store the caps while on NULL state to
* set them later */
camera->videobin_capsfilter = gst_element_factory_make ("capsfilter",
"videobin-capsfilter");
camera->imagebin_capsfilter = gst_element_factory_make ("capsfilter",
"imagebin-capsfilter");
camera->viewfinderbin_capsfilter = gst_element_factory_make ("capsfilter",
"viewfinderbin-capsfilter");
gst_bin_add_many (GST_BIN (camera),
gst_object_ref (camera->viewfinderbin),
gst_object_ref (camera->videobin_capsfilter),
gst_object_ref (camera->imagebin_capsfilter),
gst_object_ref (camera->viewfinderbin_capsfilter), NULL);
/* these elements are only added if they are going to be used */
camera->audio_capsfilter = gst_element_factory_make ("capsfilter",
"audio-capsfilter");
camera->audio_volume = gst_element_factory_make ("volume", "audio-volume");
}
static void
gst_image_capture_bin_post_image_done (GstCameraBin * camera,
const gchar * filename)
{
GstMessage *msg;
g_return_if_fail (filename != NULL);
msg = gst_message_new_element (GST_OBJECT_CAST (camera),
gst_structure_new ("image-done", "filename", G_TYPE_STRING,
filename, NULL));
if (!gst_element_post_message (GST_ELEMENT_CAST (camera), msg))
GST_WARNING_OBJECT (camera, "Failed to post image-done message");
}
static void
gst_camera_bin_handle_message (GstBin * bin, GstMessage * message)
{
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ELEMENT:{
const GstStructure *structure = gst_message_get_structure (message);
const gchar *filename;
if (gst_structure_has_name (structure, "GstMultiFileSink")) {
GST_CAMERA_BIN_PROCESSING_DEC (GST_CAMERA_BIN_CAST (bin));
filename = gst_structure_get_string (structure, "filename");
if (filename) {
gst_image_capture_bin_post_image_done (GST_CAMERA_BIN_CAST (bin),
filename);
}
}
}
break;
case GST_MESSAGE_WARNING:{
GError *err = NULL;
gchar *debug = NULL;
gst_message_parse_warning (message, &err, &debug);
if (err->domain == GST_RESOURCE_ERROR) {
/* some capturing failed */
GST_CAMERA_BIN_PROCESSING_DEC (GST_CAMERA_BIN_CAST (bin));
}
}
break;
case GST_MESSAGE_EOS:{
GstElement *src = GST_ELEMENT (GST_MESSAGE_SRC (message));
if (src == GST_CAMERA_BIN_CAST (bin)->videosink) {
GST_DEBUG_OBJECT (bin, "EOS from video branch");
GST_CAMERA_BIN_PROCESSING_DEC (GST_CAMERA_BIN_CAST (bin));
}
}
break;
default:
break;
}
if (message)
GST_BIN_CLASS (parent_class)->handle_message (bin, message);
}
/*
* Transforms:
* ... ! previous_element [ ! current_filter ] ! next_element ! ...
*
* into:
* ... ! previous_element [ ! new_filter ] ! next_element ! ...
*
* Where current_filter and new_filter might or might not be NULL
*/
static void
gst_camera_bin_check_and_replace_filter (GstCameraBin * camera,
GstElement ** current_filter, GstElement * new_filter,
GstElement * previous_element, GstElement * next_element)
{
if (*current_filter == new_filter) {
GST_DEBUG_OBJECT (camera, "Current filter is the same as the previous, "
"no switch needed.");
return;
}
GST_DEBUG_OBJECT (camera, "Replacing current filter (%s) with new filter "
"(%s)", *current_filter ? GST_ELEMENT_NAME (*current_filter) : "null",
new_filter ? GST_ELEMENT_NAME (new_filter) : "null");
if (*current_filter) {
gst_bin_remove (GST_BIN_CAST (camera), *current_filter);
gst_object_unref (*current_filter);
*current_filter = NULL;
} else {
/* unlink the pads */
gst_element_unlink (previous_element, next_element);
}
if (new_filter) {
*current_filter = gst_object_ref (new_filter);
gst_bin_add (GST_BIN_CAST (camera), gst_object_ref (new_filter));
gst_element_link_many (previous_element, new_filter, next_element, NULL);
} else {
gst_element_link (previous_element, next_element);
}
}
static void
encodebin_element_added (GstElement * encodebin, GstElement * new_element,
GstCameraBin * camera)
{
GstElementFactory *factory = gst_element_get_factory (new_element);
if (factory != NULL) {
if (strcmp (GST_PLUGIN_FEATURE_NAME (factory), "audiorate") == 0 ||
strcmp (GST_PLUGIN_FEATURE_NAME (factory), "videorate") == 0) {
g_object_set (new_element, "skip-to-first", TRUE, NULL);
}
}
}
#define VIDEO_PAD 1
#define AUDIO_PAD 2
static GstPad *
encodebin_find_pad (GstCameraBin * camera, GstElement * encodebin,
gint pad_type)
{
GstPad *pad = NULL;
GstIterator *iter;
gboolean done;
GST_DEBUG_OBJECT (camera, "Looking at encodebin pads, searching for %s pad",
pad_type == VIDEO_PAD ? "video" : "audio");
iter = gst_element_iterate_sink_pads (encodebin);
done = FALSE;
while (!done) {
switch (gst_iterator_next (iter, (gpointer *) & pad)) {
case GST_ITERATOR_OK:
if (pad_type == VIDEO_PAD) {
if (strstr (GST_PAD_NAME (pad), "video") != NULL) {
GST_DEBUG_OBJECT (camera, "Found video pad %s", GST_PAD_NAME (pad));
done = TRUE;
break;
}
} else if (pad_type == AUDIO_PAD) {
if (strstr (GST_PAD_NAME (pad), "audio") != NULL) {
GST_DEBUG_OBJECT (camera, "Found audio pad %s", GST_PAD_NAME (pad));
done = TRUE;
break;
}
}
gst_object_unref (pad);
pad = NULL;
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (iter);
break;
case GST_ITERATOR_ERROR:
pad = NULL;
done = TRUE;
break;
case GST_ITERATOR_DONE:
pad = NULL;
done = TRUE;
break;
}
}
gst_iterator_free (iter);
/* no static pad, try requesting one */
if (pad == NULL) {
GstElementClass *klass;
GstPadTemplate *tmpl;
GST_DEBUG_OBJECT (camera, "No pads found, trying to request one");
klass = GST_ELEMENT_GET_CLASS (encodebin);
tmpl = gst_element_class_get_pad_template (klass, pad_type == VIDEO_PAD ?
"video_%d" : "audio_%d");
pad = gst_element_request_pad (encodebin, tmpl, NULL, NULL);
GST_DEBUG_OBJECT (camera, "Got pad: %s", pad ? GST_PAD_NAME (pad) : "null");
gst_object_unref (tmpl);
}
return pad;
}
static gboolean
gst_camera_bin_video_profile_has_audio (GstCameraBin * camera)
{
const GList *list;
g_return_val_if_fail (camera->video_profile != NULL, FALSE);
if (GST_IS_ENCODING_VIDEO_PROFILE (camera->video_profile))
return FALSE;
for (list =
gst_encoding_container_profile_get_profiles ((GstEncodingContainerProfile
*) camera->video_profile); list; list = g_list_next (list)) {
GstEncodingProfile *profile = (GstEncodingProfile *) list->data;
if (GST_IS_ENCODING_AUDIO_PROFILE (profile))
return TRUE;
}
return FALSE;
}
static GstPadLinkReturn
gst_camera_bin_link_encodebin (GstCameraBin * camera, GstElement * encodebin,
GstElement * element, gint padtype)
{
GstPadLinkReturn ret;
GstPad *srcpad;
GstPad *sinkpad = NULL;
srcpad = gst_element_get_static_pad (element, "src");
g_assert (srcpad != NULL);
sinkpad = encodebin_find_pad (camera, encodebin, padtype);
/* there may be no available sink pad for encodebin in some situations:
* e.g. missing elements or incompatible padtype */
if (sinkpad == NULL) {
gst_object_unref (srcpad);
return GST_PAD_LINK_REFUSED;
}
ret = gst_pad_link (srcpad, sinkpad);
gst_object_unref (sinkpad);
gst_object_unref (srcpad);
return ret;
}
static void
gst_camera_bin_src_notify_max_zoom_cb (GObject * self, GParamSpec * pspec,
gpointer user_data)
{
GstCameraBin *camera = (GstCameraBin *) user_data;
g_object_get (self, "max-zoom", &camera->max_zoom, NULL);
GST_DEBUG_OBJECT (camera, "Max zoom updated to %f", camera->max_zoom);
g_object_notify (G_OBJECT (camera), "max-zoom");
}
/**
* gst_camera_bin_create_elements:
* @param camera: the #GstCameraBin
*
* Creates all elements inside #GstCameraBin
*
* Each of the pads on the camera source is linked as follows:
* .pad ! queue ! capsfilter ! correspondingbin
*
* Where 'correspondingbin' is the bin appropriate for
* the camera source pad.
*/
static gboolean
gst_camera_bin_create_elements (GstCameraBin * camera)
{
gboolean new_src = FALSE;
gboolean new_audio_src = FALSE;
gboolean has_audio;
gboolean profile_switched = FALSE;
const gchar *missing_element_name;
if (!camera->elements_created) {
/* TODO check that elements created in _init were really created */
camera->video_encodebin = gst_element_factory_make ("encodebin", NULL);
if (!camera->video_encodebin) {
missing_element_name = "encodebin";
goto missing_element;
}
camera->video_encodebin_signal_id =
g_signal_connect (camera->video_encodebin, "element-added",
(GCallback) encodebin_element_added, camera);
camera->videosink =
gst_element_factory_make ("filesink", "videobin-filesink");
g_object_set (camera->videosink, "async", FALSE, NULL);
/* audio elements */
camera->audio_queue = gst_element_factory_make ("queue", "audio-queue");
camera->audio_convert = gst_element_factory_make ("audioconvert",
"audio-convert");
if (!camera->audio_convert) {
missing_element_name = "audioconvert";
goto missing_element;
}
if (!camera->audio_volume) {
missing_element_name = "volume";
goto missing_element;
}
if (camera->video_profile == NULL) {
GstEncodingContainerProfile *prof;
GstCaps *caps;
caps = gst_caps_new_simple ("application/ogg", NULL);
prof = gst_encoding_container_profile_new ("ogg", "theora+vorbis+ogg",
caps, NULL);
gst_caps_unref (caps);
caps = gst_caps_new_simple ("video/x-theora", NULL);
if (!gst_encoding_container_profile_add_profile (prof,
(GstEncodingProfile *) gst_encoding_video_profile_new (caps,
NULL, NULL, 1))) {
GST_WARNING_OBJECT (camera, "Failed to create encoding profiles");
}
gst_caps_unref (caps);
caps = gst_caps_new_simple ("audio/x-vorbis", NULL);
if (!gst_encoding_container_profile_add_profile (prof,
(GstEncodingProfile *) gst_encoding_audio_profile_new (caps,
NULL, NULL, 1))) {
GST_WARNING_OBJECT (camera, "Failed to create encoding profiles");
}
gst_caps_unref (caps);
camera->video_profile = (GstEncodingProfile *) prof;
camera->video_profile_switch = TRUE;
}
camera->image_encodebin = gst_element_factory_make ("encodebin", NULL);
if (!camera->image_encodebin) {
missing_element_name = "encodebin";
goto missing_element;
}
camera->image_encodebin_signal_id =
g_signal_connect (camera->image_encodebin, "element-added",
(GCallback) encodebin_element_added, camera);
camera->imagesink =
gst_element_factory_make ("multifilesink", "imagebin-filesink");
if (!camera->imagesink) {
missing_element_name = "multifilesink";
goto missing_element;
}
g_object_set (camera->imagesink, "async", FALSE, "post-messages", TRUE,
NULL);
if (camera->image_profile == NULL) {
GstEncodingContainerProfile *prof;
GstEncodingVideoProfile *vprof;
GstCaps *caps;
caps = gst_caps_new_simple ("image/jpeg", NULL);
vprof = gst_encoding_video_profile_new (caps, NULL, NULL, 1);
gst_encoding_video_profile_set_variableframerate (vprof, TRUE);
prof = gst_encoding_container_profile_new ("jpeg", "jpeg container", caps,
NULL);
gst_encoding_container_profile_add_profile (prof,
(GstEncodingProfile *) vprof);
gst_caps_unref (caps);
camera->image_profile = (GstEncodingProfile *) prof;
camera->image_profile_switch = TRUE;
}
camera->videobin_queue =
gst_element_factory_make ("queue", "videobin-queue");
camera->imagebin_queue =
gst_element_factory_make ("queue", "imagebin-queue");
camera->viewfinderbin_queue =
gst_element_factory_make ("queue", "viewfinderbin-queue");
g_object_set (camera->viewfinderbin_queue, "leaky", 2, "silent", TRUE,
NULL);
g_object_set (camera->imagebin_queue, "max-size-time", (guint64) 0,
"silent", TRUE, NULL);
g_object_set (camera->videobin_queue, "silent", TRUE, NULL);
gst_bin_add_many (GST_BIN_CAST (camera),
gst_object_ref (camera->video_encodebin),
gst_object_ref (camera->videosink),
gst_object_ref (camera->image_encodebin),
gst_object_ref (camera->imagesink),
gst_object_ref (camera->videobin_queue),
gst_object_ref (camera->imagebin_queue),
gst_object_ref (camera->viewfinderbin_queue), NULL);
/* Linking can be optimized TODO */
gst_element_link_many (camera->videobin_queue, camera->videobin_capsfilter,
NULL);
gst_element_link (camera->video_encodebin, camera->videosink);
gst_element_link_many (camera->imagebin_queue, camera->imagebin_capsfilter,
NULL);
gst_element_link (camera->image_encodebin, camera->imagesink);
gst_element_link_many (camera->viewfinderbin_queue,
camera->viewfinderbin_capsfilter, camera->viewfinderbin, NULL);
/*
* Video can't get into playing as its internal filesink will open
* a file for writing and leave it empty if unused.
*
* Its state is managed using the current mode and the source's
* ready-for-capture notify callback. When we are at video mode and
* the source's ready-for-capture goes to FALSE it means it is
* starting recording, so we should prepare the video bin.
*/
gst_element_set_locked_state (camera->videosink, TRUE);
gst_element_set_locked_state (camera->imagesink, TRUE);
g_object_set (camera->videosink, "location", camera->video_location, NULL);
g_object_set (camera->imagesink, "location", camera->image_location, NULL);
}
if (camera->video_profile_switch) {
GST_DEBUG_OBJECT (camera, "Switching encodebin's profile");
g_object_set (camera->video_encodebin, "profile", camera->video_profile,
NULL);
if (GST_PAD_LINK_FAILED (gst_camera_bin_link_encodebin (camera,
camera->video_encodebin, camera->videobin_capsfilter,
VIDEO_PAD))) {
goto fail;
}
camera->video_profile_switch = FALSE;
/* used to trigger relinking further down */
profile_switched = TRUE;
}
if (camera->image_profile_switch) {
GST_DEBUG_OBJECT (camera, "Switching encodebin's profile");
g_object_set (camera->image_encodebin, "profile", camera->image_profile,
NULL);
if (GST_PAD_LINK_FAILED (gst_camera_bin_link_encodebin (camera,
camera->image_encodebin, camera->imagebin_capsfilter,
VIDEO_PAD))) {
goto fail;
}
camera->image_profile_switch = FALSE;
}
/* check if we need to replace the camera src */
if (camera->src) {
if (camera->user_src && camera->user_src != camera->src) {
if (camera->src_capture_notify_id)
g_signal_handler_disconnect (camera->src,
camera->src_capture_notify_id);
gst_bin_remove (GST_BIN_CAST (camera), camera->src);
gst_object_unref (camera->src);
camera->src = NULL;
}
}
if (!camera->src) {
if (camera->user_src) {
camera->src = gst_object_ref (camera->user_src);
} else {
camera->src =
gst_element_factory_make ("wrappercamerabinsrc", "camerasrc");
}
new_src = TRUE;
}
g_assert (camera->src != NULL);
g_object_set (camera->src, "mode", camera->mode, NULL);
if (camera->src) {
if (g_object_class_find_property (G_OBJECT_GET_CLASS (camera->src),
"preview-caps")) {
g_object_set (camera->src, "post-previews", camera->post_previews,
"preview-caps", camera->preview_caps, "preview-filter",
camera->preview_filter, NULL);
}
g_object_set (camera->src, "zoom", camera->zoom, NULL);
g_signal_connect (G_OBJECT (camera->src), "notify::max-zoom",
(GCallback) gst_camera_bin_src_notify_max_zoom_cb, camera);
}
if (new_src) {
gst_bin_add (GST_BIN_CAST (camera), gst_object_ref (camera->src));
camera->src_capture_notify_id = g_signal_connect (G_OBJECT (camera->src),
"notify::ready-for-capture",
G_CALLBACK (gst_camera_bin_src_notify_readyforcapture), camera);
gst_element_link_pads (camera->src, "vfsrc", camera->viewfinderbin_queue,
"sink");
gst_element_link_pads (camera->src, "imgsrc", camera->imagebin_queue,
"sink");
gst_element_link_pads (camera->src, "vidsrc", camera->videobin_queue,
"sink");
}
gst_camera_bin_check_and_replace_filter (camera, &camera->image_filter,
camera->user_image_filter, camera->imagebin_queue,
camera->imagebin_capsfilter);
gst_camera_bin_check_and_replace_filter (camera, &camera->video_filter,
camera->user_video_filter, camera->videobin_queue,
camera->videobin_capsfilter);
gst_camera_bin_check_and_replace_filter (camera, &camera->viewfinder_filter,
camera->user_viewfinder_filter, camera->viewfinderbin_queue,
camera->viewfinderbin_capsfilter);
/* check if we need to replace the camera audio src */
has_audio = gst_camera_bin_video_profile_has_audio (camera);
if (camera->audio_src) {
if ((camera->user_audio_src && camera->user_audio_src != camera->audio_src)
|| !has_audio) {
gst_bin_remove (GST_BIN_CAST (camera), camera->audio_src);
gst_bin_remove (GST_BIN_CAST (camera), camera->audio_queue);
gst_bin_remove (GST_BIN_CAST (camera), camera->audio_volume);
gst_bin_remove (GST_BIN_CAST (camera), camera->audio_capsfilter);
gst_bin_remove (GST_BIN_CAST (camera), camera->audio_convert);
gst_object_unref (camera->audio_src);
camera->audio_src = NULL;
}
}
if (!camera->audio_src && has_audio) {
if (camera->user_audio_src) {
camera->audio_src = gst_object_ref (camera->user_audio_src);
} else {
camera->audio_src =
gst_element_factory_make (DEFAULT_AUDIO_SRC, "audiosrc");
}
gst_element_set_locked_state (camera->audio_src, TRUE);
new_audio_src = TRUE;
}
if (new_audio_src) {
gst_bin_add (GST_BIN_CAST (camera), gst_object_ref (camera->audio_src));
gst_bin_add (GST_BIN_CAST (camera), gst_object_ref (camera->audio_queue));
gst_bin_add (GST_BIN_CAST (camera), gst_object_ref (camera->audio_volume));
gst_bin_add (GST_BIN_CAST (camera),
gst_object_ref (camera->audio_capsfilter));
gst_bin_add (GST_BIN_CAST (camera), gst_object_ref (camera->audio_convert));
gst_element_link_many (camera->audio_src, camera->audio_queue,
camera->audio_volume,
camera->audio_capsfilter, camera->audio_convert, NULL);
}
if ((profile_switched && has_audio) || new_audio_src) {
if (GST_PAD_LINK_FAILED (gst_camera_bin_link_encodebin (camera,
camera->video_encodebin, camera->audio_convert, AUDIO_PAD))) {
goto fail;
}
}
camera->elements_created = TRUE;
return TRUE;
missing_element:
gst_element_post_message (GST_ELEMENT_CAST (camera),
gst_missing_element_message_new (GST_ELEMENT_CAST (camera),
missing_element_name));
GST_ELEMENT_ERROR (camera, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
missing_element_name), (NULL));
goto fail;
fail:
/* FIXME properly clean up */
return FALSE;
}
static GstStateChangeReturn
gst_camera_bin_change_state (GstElement * element, GstStateChange trans)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstCameraBin *camera = GST_CAMERA_BIN_CAST (element);
switch (trans) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_camera_bin_create_elements (camera)) {
return GST_STATE_CHANGE_FAILURE;
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
GST_CAMERA_BIN_RESET_PROCESSING_COUNTER (camera);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
if (GST_STATE (camera->videosink) >= GST_STATE_PAUSED)
gst_element_set_state (camera->videosink, GST_STATE_READY);
if (GST_STATE (camera->imagesink) >= GST_STATE_PAUSED)
gst_element_set_state (camera->imagesink, GST_STATE_READY);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
gst_element_set_state (camera->videosink, GST_STATE_NULL);
gst_element_set_state (camera->imagesink, GST_STATE_NULL);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, trans);
switch (trans) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
if (camera->audio_src && GST_STATE (camera->audio_src) >= GST_STATE_READY)
gst_element_set_state (camera->audio_src, GST_STATE_READY);
gst_tag_setter_reset_tags (GST_TAG_SETTER (camera));
GST_CAMERA_BIN_RESET_PROCESSING_COUNTER (camera);
/* explicitly set to READY as they might be outside of the bin */
gst_element_set_state (camera->audio_queue, GST_STATE_READY);
gst_element_set_state (camera->audio_volume, GST_STATE_READY);
gst_element_set_state (camera->audio_capsfilter, GST_STATE_READY);
gst_element_set_state (camera->audio_convert, GST_STATE_READY);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
if (camera->audio_src)
gst_element_set_state (camera->audio_src, GST_STATE_NULL);
/* explicitly set to NULL as they might be outside of the bin */
gst_element_set_state (camera->audio_queue, GST_STATE_NULL);
gst_element_set_state (camera->audio_volume, GST_STATE_NULL);
gst_element_set_state (camera->audio_capsfilter, GST_STATE_NULL);
gst_element_set_state (camera->audio_convert, GST_STATE_NULL);
break;
default:
break;
}
return ret;
}
static gboolean
gst_camera_bin_send_event (GstElement * element, GstEvent * event)
{
GstCameraBin *camera = GST_CAMERA_BIN_CAST (element);
gboolean res;
res = GST_ELEMENT_CLASS (parent_class)->send_event (element, event);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
{
GstState current;
if (camera->videosink) {
gst_element_get_state (camera->videosink, &current, NULL, 0);
if (current <= GST_STATE_READY)
gst_element_post_message (camera->videosink,
gst_message_new_eos (GST_OBJECT (camera->videosink)));
}
if (camera->imagesink) {
gst_element_get_state (camera->imagesink, &current, NULL, 0);
if (current <= GST_STATE_READY)
gst_element_post_message (camera->imagesink,
gst_message_new_eos (GST_OBJECT (camera->imagesink)));
}
break;
}
default:
break;
}
return res;
}
static void
gst_camera_bin_set_location (GstCameraBin * camera, const gchar * location)
{
GST_DEBUG_OBJECT (camera, "Setting mode %d location to %s", camera->mode,
location);
if (camera->mode == MODE_IMAGE) {
g_free (camera->image_location);
camera->image_location = g_strdup (location);
} else {
g_free (camera->video_location);
camera->video_location = g_strdup (location);
}
}
static void
gst_camera_bin_set_audio_src (GstCameraBin * camera, GstElement * src)
{
GST_DEBUG_OBJECT (GST_OBJECT (camera),
"Setting audio source %" GST_PTR_FORMAT, src);
if (camera->user_audio_src)
g_object_unref (camera->user_audio_src);
if (src)
g_object_ref (src);
camera->user_audio_src = src;
}
static void
gst_camera_bin_set_camera_src (GstCameraBin * camera, GstElement * src)
{
GST_DEBUG_OBJECT (GST_OBJECT (camera),
"Setting camera source %" GST_PTR_FORMAT, src);
if (camera->user_src)
g_object_unref (camera->user_src);
if (src)
g_object_ref (src);
camera->user_src = src;
}
static void
gst_camera_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCameraBin *camera = GST_CAMERA_BIN_CAST (object);
switch (prop_id) {
case PROP_MODE:
gst_camera_bin_change_mode (camera, g_value_get_enum (value));
break;
case PROP_LOCATION:
gst_camera_bin_set_location (camera, g_value_get_string (value));
break;
case PROP_CAMERA_SRC:
gst_camera_bin_set_camera_src (camera, g_value_get_object (value));
break;
case PROP_AUDIO_SRC:
gst_camera_bin_set_audio_src (camera, g_value_get_object (value));
break;
case PROP_MUTE_AUDIO:
g_object_set (camera->audio_volume, "mute", g_value_get_boolean (value),
NULL);
break;
case PROP_AUDIO_CAPTURE_CAPS:{
GST_DEBUG_OBJECT (camera,
"Setting audio capture caps to %" GST_PTR_FORMAT,
gst_value_get_caps (value));
g_object_set (camera->audio_capsfilter, "caps",
gst_value_get_caps (value), NULL);
}
break;
case PROP_IMAGE_CAPTURE_CAPS:{
GstPad *pad = NULL;
if (camera->src)
pad =
gst_element_get_static_pad (camera->src,
GST_BASE_CAMERA_SRC_IMAGE_PAD_NAME);
GST_DEBUG_OBJECT (camera,
"Setting image capture caps to %" GST_PTR_FORMAT,
gst_value_get_caps (value));
/* set the capsfilter caps and notify the src to renegotiate */
g_object_set (camera->imagebin_capsfilter, "caps",
gst_value_get_caps (value), NULL);
if (pad) {
GST_DEBUG_OBJECT (camera, "Pushing renegotiate on %s",
GST_PAD_NAME (pad));
GST_PAD_EVENTFUNC (pad) (pad, gst_camera_bin_new_event_renegotiate ());
gst_object_unref (pad);
}
}
break;
case PROP_VIDEO_CAPTURE_CAPS:{
GstPad *pad = NULL;
if (camera->src)
pad =
gst_element_get_static_pad (camera->src,
GST_BASE_CAMERA_SRC_VIDEO_PAD_NAME);
GST_DEBUG_OBJECT (camera,
"Setting video capture caps to %" GST_PTR_FORMAT,
gst_value_get_caps (value));
/* set the capsfilter caps and notify the src to renegotiate */
g_object_set (camera->videobin_capsfilter, "caps",
gst_value_get_caps (value), NULL);
if (pad) {
GST_DEBUG_OBJECT (camera, "Pushing renegotiate on %s",
GST_PAD_NAME (pad));
GST_PAD_EVENTFUNC (pad) (pad, gst_camera_bin_new_event_renegotiate ());
gst_object_unref (pad);
}
}
break;
case PROP_VIEWFINDER_CAPS:{
GstPad *pad = NULL;
if (camera->src)
pad =
gst_element_get_static_pad (camera->src,
GST_BASE_CAMERA_SRC_VIEWFINDER_PAD_NAME);
GST_DEBUG_OBJECT (camera,
"Setting viewfinder capture caps to %" GST_PTR_FORMAT,
gst_value_get_caps (value));
/* set the capsfilter caps and notify the src to renegotiate */
g_object_set (camera->viewfinderbin_capsfilter, "caps",
gst_value_get_caps (value), NULL);
if (pad) {
GST_DEBUG_OBJECT (camera, "Pushing renegotiate on %s",
GST_PAD_NAME (pad));
GST_PAD_EVENTFUNC (pad) (pad, gst_camera_bin_new_event_renegotiate ());
gst_object_unref (pad);
}
}
break;
case PROP_POST_PREVIEWS:
camera->post_previews = g_value_get_boolean (value);
if (camera->src
&& g_object_class_find_property (G_OBJECT_GET_CLASS (camera->src),
"post-previews"))
g_object_set (camera->src, "post-previews", camera->post_previews,
NULL);
break;
case PROP_PREVIEW_CAPS:
gst_caps_replace (&camera->preview_caps,
(GstCaps *) gst_value_get_caps (value));
if (camera->src
&& g_object_class_find_property (G_OBJECT_GET_CLASS (camera->src),
"preview-caps"))
g_object_set (camera->src, "preview-caps", camera->preview_caps, NULL);
break;
case PROP_VIDEO_ENCODING_PROFILE:
if (camera->video_profile)
gst_encoding_profile_unref (camera->video_profile);
camera->video_profile =
(GstEncodingProfile *) gst_value_dup_mini_object (value);
camera->video_profile_switch = TRUE;
break;
case PROP_IMAGE_FILTER:
if (camera->user_image_filter)
g_object_unref (camera->user_image_filter);
camera->user_image_filter = g_value_dup_object (value);
break;
case PROP_VIDEO_FILTER:
if (camera->user_video_filter)
g_object_unref (camera->user_video_filter);
camera->user_video_filter = g_value_dup_object (value);
break;
case PROP_VIEWFINDER_FILTER:
if (camera->user_viewfinder_filter)
g_object_unref (camera->user_viewfinder_filter);
camera->user_viewfinder_filter = g_value_dup_object (value);
break;
case PROP_PREVIEW_FILTER:
if (camera->preview_filter)
g_object_unref (camera->preview_filter);
camera->preview_filter = g_value_dup_object (value);
if (camera->src
&& g_object_class_find_property (G_OBJECT_GET_CLASS (camera->src),
"preview-filter"))
g_object_set (camera->src, "preview-filter", camera->preview_filter,
NULL);
break;
case PROP_VIEWFINDER_SINK:
g_object_set (camera->viewfinderbin, "video-sink",
g_value_get_object (value), NULL);
break;
case PROP_ZOOM:
camera->zoom = g_value_get_float (value);
/* limit to max-zoom */
if (camera->zoom > camera->max_zoom) {
GST_DEBUG_OBJECT (camera, "Clipping zoom %f to max-zoom %f",
camera->zoom, camera->max_zoom);
camera->zoom = camera->max_zoom;
}
if (camera->src)
g_object_set (camera->src, "zoom", camera->zoom, NULL);
break;
case PROP_IMAGE_ENCODING_PROFILE:
if (camera->image_profile)
gst_encoding_profile_unref (camera->image_profile);
camera->image_profile =
(GstEncodingProfile *) gst_value_dup_mini_object (value);
camera->image_profile_switch = TRUE;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_camera_bin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstCameraBin *camera = GST_CAMERA_BIN_CAST (object);
switch (prop_id) {
case PROP_MODE:
g_value_set_enum (value, camera->mode);
break;
case PROP_LOCATION:
if (camera->mode == MODE_VIDEO) {
g_value_set_string (value, camera->video_location);
} else {
g_value_set_string (value, camera->image_location);
}
break;
case PROP_CAMERA_SRC:
g_value_set_object (value, camera->user_src);
break;
case PROP_AUDIO_SRC:
g_value_set_object (value, camera->user_audio_src);
break;
case PROP_MUTE_AUDIO:{
gboolean mute;
g_object_get (camera->audio_volume, "mute", &mute, NULL);
g_value_set_boolean (value, mute);
break;
}
case PROP_AUDIO_CAPTURE_SUPPORTED_CAPS:
case PROP_VIDEO_CAPTURE_SUPPORTED_CAPS:
case PROP_VIEWFINDER_SUPPORTED_CAPS:
case PROP_IMAGE_CAPTURE_SUPPORTED_CAPS:{
GstPad *pad;
GstElement *element;
GstCaps *caps;
const gchar *padname;
if (prop_id == PROP_VIDEO_CAPTURE_SUPPORTED_CAPS) {
element = camera->src;
padname = GST_BASE_CAMERA_SRC_VIDEO_PAD_NAME;
} else if (prop_id == PROP_IMAGE_CAPTURE_SUPPORTED_CAPS) {
element = camera->src;
padname = GST_BASE_CAMERA_SRC_IMAGE_PAD_NAME;
} else if (prop_id == PROP_VIEWFINDER_SUPPORTED_CAPS) {
element = camera->src;
padname = GST_BASE_CAMERA_SRC_VIEWFINDER_PAD_NAME;
} else {
element = camera->audio_src;
padname = "src";
}
if (element) {
pad = gst_element_get_static_pad (element, padname);
g_assert (pad != NULL);
/* TODO not sure if we want get_caps or get_allowed_caps to already
* consider the full pipeline scenario and avoid picking a caps that
* won't negotiate. Need to take care on the special case of the
* pad being unlinked.
*/
caps = gst_pad_get_caps_reffed (pad);
if (caps) {
gst_value_set_caps (value, caps);
gst_caps_unref (caps);
}
gst_object_unref (pad);
} else {
GST_DEBUG_OBJECT (camera, "Source not created, can't get "
"supported caps");
}
}
break;
case PROP_AUDIO_CAPTURE_CAPS:{
GstCaps *caps = NULL;
g_object_get (camera->audio_capsfilter, "caps", &caps, NULL);
gst_value_set_caps (value, caps);
gst_caps_unref (caps);
}
break;
case PROP_IMAGE_CAPTURE_CAPS:{
GstCaps *caps = NULL;
g_object_get (camera->imagebin_capsfilter, "caps", &caps, NULL);
gst_value_set_caps (value, caps);
gst_caps_unref (caps);
}
break;
case PROP_VIDEO_CAPTURE_CAPS:{
GstCaps *caps = NULL;
g_object_get (camera->videobin_capsfilter, "caps", &caps, NULL);
gst_value_set_caps (value, caps);
gst_caps_unref (caps);
}
break;
case PROP_VIEWFINDER_CAPS:{
GstCaps *caps = NULL;
g_object_get (camera->viewfinderbin_capsfilter, "caps", &caps, NULL);
gst_value_set_caps (value, caps);
gst_caps_unref (caps);
}
break;
case PROP_POST_PREVIEWS:
g_value_set_boolean (value, camera->post_previews);
break;
case PROP_PREVIEW_CAPS:
if (camera->preview_caps)
gst_value_set_caps (value, camera->preview_caps);
break;
case PROP_VIDEO_ENCODING_PROFILE:
if (camera->video_profile) {
gst_value_set_mini_object (value,
(GstMiniObject *) camera->video_profile);
}
break;
case PROP_VIDEO_FILTER:
if (camera->user_video_filter)
g_value_set_object (value, camera->user_video_filter);
break;
case PROP_IMAGE_FILTER:
if (camera->user_image_filter)
g_value_set_object (value, camera->user_image_filter);
break;
case PROP_VIEWFINDER_FILTER:
if (camera->user_viewfinder_filter)
g_value_set_object (value, camera->user_viewfinder_filter);
break;
case PROP_PREVIEW_FILTER:
if (camera->preview_filter)
g_value_set_object (value, camera->preview_filter);
break;
case PROP_VIEWFINDER_SINK:{
GstElement *sink;
g_object_get (camera->viewfinderbin, "video-sink", &sink, NULL);
g_value_take_object (value, sink);
break;
}
case PROP_ZOOM:
g_value_set_float (value, camera->zoom);
break;
case PROP_MAX_ZOOM:
g_value_set_float (value, camera->max_zoom);
break;
case PROP_IMAGE_ENCODING_PROFILE:
if (camera->image_profile) {
gst_value_set_mini_object (value,
(GstMiniObject *) camera->image_profile);
}
break;
case PROP_IDLE:
g_value_set_boolean (value,
g_atomic_int_get (&camera->processing_counter) == 0);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
gboolean
gst_camera_bin_plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gst_camera_bin_debug, "camerabin2", 0, "CameraBin2");
return gst_element_register (plugin, "camerabin2", GST_RANK_NONE,
gst_camera_bin_get_type ());
}
Reference in a new issue View git blame Copy permalink