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gstreamer/gst/camerabin2/gstcamerabin2.c
Thibault Saunier 059e8ff44a docs: Document basecamerabinsrc
2020-06-23 13:02:57 -04:00

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/* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-camerabin
* @title: camerabin
*
* CameraBin is a high-level camera object that encapsulates gstreamer
* elements, providing an API for controlling a digital camera.
*
* > Note that camerabin is still UNSTABLE and under development.
*
* CameraBin has the following main features:
*
* * Record videos
* * Capture pictures
* * Display a viewfinder
* * Post preview images for each capture (video and image)
*
* ## Usage
*
* Camerabin can be created using gst_element_factory_make() just like
* any other element. Video or image capture mode can be selected using
* the #GstCameraBin:mode property and the file to save the capture is
* selected using #GstCameraBin:location property.
*
* After creating camerabin, applications might want to do some
* customization (there's a section about this below), then select
* the desired mode and start capturing.
*
* In image capture mode, just send a #GstCameraBin::start-capture and a
* picture will be captured. When the picture is stored on the selected
* location, a %GST_MESSAGE_ELEMENT named 'image-done' will be posted on
* the #GstBus.
*
* In video capture mode, send a #GstCameraBin::start-capture to start
* recording, then send a #GstCameraBin::stop-capture to stop recording.
* Note that both signals are asynchronous, so, calling
* #GstCameraBin::stop-capture doesn't guarantee that the video has been
* properly finished yet. Applications should wait for the 'video-done'
* message to be posted on the bus.
*
* In both modes, if #GstCameraBin:post-previews is %TRUE, a #GstBuffer
* will be post to the #GstBus in a field named 'buffer', in a
* 'preview-image' message of type %GST_MESSAGE_ELEMENT.
*
*
* ## Customization
*
* Camerabin provides various customization properties, allowing the user
* to set custom filters, selecting the viewfinder sink and formats to
* use to encode the captured images/videos.
*
* #GstEncodingProfile<!-- -->s are used to tell camerabin which formats it
* should encode the captures to, those should be set to
* #GstCameraBin:image-profile and #GstCameraBin:video-profile. Default is
* jpeg for images, and ogg (theora and vorbis) for video. If a profile without
* an audio stream is set for video, audio will be disabled on recordings.
*
* #GstCameraBin:preview-caps can be used to select which format preview
* images should be posted on the #GstBus. It has to be a raw video format.
*
* Camerabin has a #GstCameraBin:camera-source property so applications can
* set their source that will provide buffers for the viewfinder and for
* captures. This camera source is a special type of source that has 3 pads.
* To use a 'regular' source with a single pad you should use
* #GstWrapperCameraBinSrc, it will adapt your source and provide 3 pads.
*
* Applications can also select the desired viewfinder sink using
* #GstCameraBin:viewfinder-sink, it is also possible to select the audio
* source using #GstCameraBin:audio-source.
*
* The viewfinder resolution can be configured using
* #GstCameraBin:viewfinder-caps, these #GstCaps should be a subset of
* #GstCameraBin:viewfinder-supported-caps.
*
* To select the desired resolution for captures, camerabin provides
* #GstCameraBin:image-capture-caps and #GstCameraBin:video-capture-caps,
* these caps must be a subset of what the source can produce. The allowed
* caps can be probed using #GstCameraBin:image-capture-supported-caps and
* #GstCameraBin:video-capture-supported-caps. In an analogous way, there
* are #GstCameraBin:audio-capture-caps and
* #GstCameraBin:audio-capture-supported-caps.
*
* Camerabin also allows applications to insert custom #GstElements on any
* of its branches: video capture, image capture, viewfinder and preview.
* Check #GstCameraBin:video-filter, #GstCameraBin:image-filter,
* #GstCameraBin:viewfinder-filter and #GstCameraBin:preview-filter.
*
* ## Example launch line
*
* Unfortunately, camerabin can't be really used from gst-launch-1.0, as you
* need to send signals to control it. The following pipeline might be able
* to show the viewfinder using all the default elements.
* |[
* gst-launch-1.0 -v -m camerabin
* ]|
*
*/
/*
* 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>
#include <gst/glib-compat-private.h>
#define GST_CAMERA_BIN2_PROCESSING_INC(c) \
{ \
gint bef = g_atomic_int_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_BIN2_PROCESSING_DEC(c) \
{ \
if (g_atomic_int_dec_and_test (&c->processing_counter)) { \
g_object_notify (G_OBJECT (c), "idle"); \
GST_DEBUG_OBJECT ((c), "Camerabin now idle"); \
} \
GST_DEBUG_OBJECT ((c), "Processing counter decremented"); \
}
#define GST_CAMERA_BIN2_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,
PROP_FLAGS,
PROP_AUDIO_FILTER
};
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_LOCATION "cap_%d"
#define DEFAULT_POST_PREVIEWS FALSE
#define DEFAULT_MUTE_AUDIO FALSE
#define DEFAULT_IDLE TRUE
#define DEFAULT_FLAGS 0
#define DEFAULT_AUDIO_SRC "autoaudiosrc"
/********************************
* Standard GObject boilerplate *
* and GObject types *
********************************/
static GstPipelineClass *parent_class;
static void gst_camera_bin_class_init (GstCameraBin2Class * klass);
static void gst_camera_bin_base_init (gpointer klass);
static void gst_camera_bin_init (GstCameraBin2 * 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);
#define C_FLAGS(v) ((guint) v)
#define GST_TYPE_CAM_FLAGS (gst_cam_flags_get_type())
static GType
gst_cam_flags_get_type (void)
{
static const GFlagsValue values[] = {
{C_FLAGS (GST_CAM_FLAG_NO_AUDIO_CONVERSION), "Do not use audio conversion "
"elements", "no-audio-conversion"},
{C_FLAGS (GST_CAM_FLAG_NO_VIDEO_CONVERSION), "Do not use video conversion "
"elements", "no-video-conversion"},
{C_FLAGS (GST_CAM_FLAG_NO_VIEWFINDER_CONVERSION),
"Do not use viewfinder conversion " "elements",
"no-viewfinder-conversion"},
{C_FLAGS (GST_CAM_FLAG_NO_IMAGE_CONVERSION), "Do not use image conversion "
"elements", "no-image-conversion"},
{0, NULL, NULL}
};
static volatile GType id = 0;
if (g_once_init_enter ((gsize *) & id)) {
GType _id;
_id = g_flags_register_static ("GstCamFlags", values);
g_once_init_leave ((gsize *) & id, _id);
}
return id;
}
GType
gst_camera_bin2_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 (GstCameraBin2Class),
(GBaseInitFunc) gst_camera_bin_base_init,
NULL,
(GClassInitFunc) gst_camera_bin_class_init,
NULL,
NULL,
sizeof (GstCameraBin2),
0,
(GInstanceInitFunc) gst_camera_bin_init,
NULL
};
gst_camera_bin_type =
g_type_register_static (GST_TYPE_PIPELINE, "GstCameraBin",
&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_file_location (const gchar * location)
{
return gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM,
gst_structure_new ("new-location", "location", G_TYPE_STRING, location,
NULL));
}
static void
gst_camera_bin_start_capture (GstCameraBin2 * camerabin)
{
const GstTagList *taglist;
gint capture_index = camerabin->capture_index;
gchar *location = NULL;
GST_DEBUG_OBJECT (camerabin, "Received start-capture");
/* check that we have a valid location */
if (camerabin->mode == MODE_VIDEO) {
if (camerabin->location == NULL) {
GST_ELEMENT_ERROR (camerabin, RESOURCE, OPEN_WRITE,
(_("File location is set to NULL, please set it to a valid filename")), (NULL));
return;
}
g_mutex_lock (&camerabin->video_capture_mutex);
while (camerabin->video_state == GST_CAMERA_BIN_VIDEO_FINISHING) {
g_cond_wait (&camerabin->video_state_cond,
&camerabin->video_capture_mutex);
}
if (camerabin->video_state != GST_CAMERA_BIN_VIDEO_IDLE) {
GST_WARNING_OBJECT (camerabin, "Another video recording is ongoing"
" (state %d), cannot start a new one", camerabin->video_state);
g_mutex_unlock (&camerabin->video_capture_mutex);
return;
}
camerabin->video_state = GST_CAMERA_BIN_VIDEO_STARTING;
}
GST_CAMERA_BIN2_PROCESSING_INC (camerabin);
if (camerabin->location)
location = g_strdup_printf (camerabin->location, capture_index);
if (camerabin->mode == MODE_IMAGE) {
/* store the next capture buffer filename */
g_mutex_lock (&camerabin->image_capture_mutex);
camerabin->image_location_list =
g_slist_append (camerabin->image_location_list, g_strdup (location));
g_mutex_unlock (&camerabin->image_capture_mutex);
}
if (camerabin->post_previews) {
/* Count processing of preview images too */
GST_CAMERA_BIN2_PROCESSING_INC (camerabin);
/* store the next preview filename */
g_mutex_lock (&camerabin->preview_list_mutex);
camerabin->preview_location_list =
g_slist_append (camerabin->preview_location_list, location);
g_mutex_unlock (&camerabin->preview_list_mutex);
} else {
g_free (location);
}
g_signal_emit_by_name (camerabin->src, "start-capture", NULL);
if (camerabin->mode == MODE_VIDEO) {
camerabin->audio_send_newseg = TRUE;
if (camerabin->audio_src)
gst_element_set_state (camerabin->audio_src, GST_STATE_PLAYING);
camerabin->video_state = GST_CAMERA_BIN_VIDEO_RECORDING;
g_mutex_unlock (&camerabin->video_capture_mutex);
}
/*
* 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));
GST_DEBUG_OBJECT (camerabin, "Have tags from application: %"
GST_PTR_FORMAT, taglist);
if (camerabin->mode == MODE_IMAGE) {
/* Store image tags in a list and push them later, this prevents
start_capture() from blocking in pad_push_event call */
g_mutex_lock (&camerabin->image_capture_mutex);
camerabin->image_tags_list =
g_slist_append (camerabin->image_tags_list,
taglist ? gst_tag_list_copy (taglist) : NULL);
g_mutex_unlock (&camerabin->image_capture_mutex);
} else if (taglist) {
GstPad *active_pad;
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);
}
GST_DEBUG_OBJECT (camerabin, "Start-capture end");
}
static void
gst_camera_bin_stop_capture (GstCameraBin2 * camerabin)
{
GST_DEBUG_OBJECT (camerabin, "Received stop-capture");
if (camerabin->mode == MODE_VIDEO) {
g_mutex_lock (&camerabin->video_capture_mutex);
if (camerabin->video_state == GST_CAMERA_BIN_VIDEO_RECORDING) {
if (camerabin->src)
g_signal_emit_by_name (camerabin->src, "stop-capture", NULL);
camerabin->video_state = GST_CAMERA_BIN_VIDEO_FINISHING;
if (camerabin->audio_src) {
camerabin->audio_drop_eos = FALSE;
gst_element_send_event (camerabin->audio_src, gst_event_new_eos ());
}
}
g_mutex_unlock (&camerabin->video_capture_mutex);
}
}
static void
gst_camera_bin_change_mode (GstCameraBin2 * 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)
{
GstCameraBin2 *camera = GST_CAMERA_BIN2_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, change the filesink location */
gst_element_set_state (camera->videosink, GST_STATE_NULL);
location = g_strdup_printf (camera->location, camera->capture_index);
GST_DEBUG_OBJECT (camera, "Switching videobin location to %s", location);
g_object_set (camera->videosink, "location", location, NULL);
g_free (location);
if (gst_element_set_state (camera->videosink, GST_STATE_PLAYING) ==
GST_STATE_CHANGE_FAILURE) {
/* Resets the latest state change return, that would be a failure
* and could cause problems in a camerabin2 state change */
gst_element_set_state (camera->videosink, GST_STATE_NULL);
}
}
camera->capture_index++;
}
}
static void
gst_camera_bin_dispose (GObject * object)
{
GstCameraBin2 *camerabin = GST_CAMERA_BIN2_CAST (object);
g_free (camerabin->location);
g_mutex_clear (&camerabin->preview_list_mutex);
g_mutex_clear (&camerabin->image_capture_mutex);
g_mutex_clear (&camerabin->video_capture_mutex);
g_cond_clear (&camerabin->video_state_cond);
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_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)
gst_object_unref (camerabin->videosink);
if (camerabin->video_encodebin)
gst_object_unref (camerabin->video_encodebin);
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_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->audio_filter)
gst_object_unref (camerabin->audio_filter);
if (camerabin->user_video_filter)
gst_object_unref (camerabin->user_video_filter);
if (camerabin->user_audio_filter)
gst_object_unref (camerabin->user_audio_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_static_metadata (element_class, "Camera Bin",
"Generic/Bin/Camera",
"Take image snapshots and record movies from camera",
"Thiago Santos <thiago.sousa.santos@collabora.co.uk>");
}
static void
gst_camera_bin_class_init (GstCameraBin2Class * 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;
/**
* GstCameraBin2: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 is cap_%d",
DEFAULT_LOCATION, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_CAMERA_SRC,
g_param_spec_object ("camera-source", "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-source", "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,
g_param_spec_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_AUDIO_FILTER,
g_param_spec_object ("audio-filter", "Audio filter",
"The element that will process captured audio buffers when recording"
". (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
* - 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 only starts outputting buffers after
* getting the 2nd buffer.
*/
g_object_class_install_property (object_class, PROP_IMAGE_ENCODING_PROFILE,
g_param_spec_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:flags
*
* Control the behaviour of encodebin.
*/
g_object_class_install_property (object_class, PROP_FLAGS,
g_param_spec_flags ("flags", "Flags", "Flags to control behaviour",
GST_TYPE_CAM_FLAGS, DEFAULT_FLAGS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstCameraBin2::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 (GstCameraBin2Class, start_capture),
NULL, NULL, NULL, G_TYPE_NONE, 0);
/**
* GstCameraBin2::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 (GstCameraBin2Class, stop_capture),
NULL, NULL, NULL, G_TYPE_NONE, 0);
gst_type_mark_as_plugin_api (GST_TYPE_CAM_FLAGS, 0);
}
static void
gst_camera_bin_init (GstCameraBin2 * camera)
{
camera->post_previews = DEFAULT_POST_PREVIEWS;
camera->mode = DEFAULT_MODE;
camera->location = g_strdup (DEFAULT_LOCATION);
camera->viewfinderbin = gst_element_factory_make ("viewfinderbin", "vf-bin");
camera->zoom = DEFAULT_ZOOM;
camera->max_zoom = MAX_ZOOM;
camera->flags = DEFAULT_FLAGS;
g_mutex_init (&camera->preview_list_mutex);
g_mutex_init (&camera->image_capture_mutex);
g_mutex_init (&camera->video_capture_mutex);
g_cond_init (&camera->video_state_cond);
/* 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 (GstCameraBin2 * 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_video_capture_bin_post_video_done (GstCameraBin2 * camera)
{
GstMessage *msg;
msg = gst_message_new_element (GST_OBJECT_CAST (camera),
gst_structure_new_empty ("video-done"));
if (!gst_element_post_message (GST_ELEMENT_CAST (camera), msg))
GST_WARNING_OBJECT (camera, "Failed to post video-done message");
}
static void
gst_camera_bin_skip_next_preview (GstCameraBin2 * camerabin)
{
gchar *location;
g_mutex_lock (&camerabin->preview_list_mutex);
if (camerabin->preview_location_list) {
location = camerabin->preview_location_list->data;
GST_DEBUG_OBJECT (camerabin, "Skipping preview for %s", location);
g_free (location);
camerabin->preview_location_list =
g_slist_delete_link (camerabin->preview_location_list,
camerabin->preview_location_list);
GST_CAMERA_BIN2_PROCESSING_DEC (camerabin);
} else {
GST_WARNING_OBJECT (camerabin, "No previews to skip");
}
g_mutex_unlock (&camerabin->preview_list_mutex);
}
static void
gst_camera_bin_finish_video_file (GstCameraBin2 * camerabin)
{
/* make sure the file is closed */
gst_element_set_state (camerabin->videosink, GST_STATE_NULL);
gst_video_capture_bin_post_video_done (camerabin);
GST_CAMERA_BIN2_PROCESSING_DEC (camerabin);
}
static gpointer
gst_camera_bin_video_reset_elements (gpointer u_data)
{
GstCameraBin2 *camerabin = GST_CAMERA_BIN2_CAST (u_data);
GST_DEBUG_OBJECT (camerabin, "Resetting video elements state");
g_mutex_lock (&camerabin->video_capture_mutex);
gst_camera_bin_finish_video_file (camerabin);
/* reset element states to clear eos/flushing pads */
gst_element_set_state (camerabin->video_encodebin, GST_STATE_READY);
gst_element_set_state (camerabin->videobin_capsfilter, GST_STATE_READY);
if (camerabin->video_filter) {
gst_element_set_state (camerabin->video_filter, GST_STATE_READY);
gst_element_sync_state_with_parent (camerabin->video_filter);
}
gst_element_sync_state_with_parent (camerabin->videobin_capsfilter);
gst_element_sync_state_with_parent (camerabin->video_encodebin);
if (camerabin->audio_src) {
gst_element_set_state (camerabin->audio_capsfilter, GST_STATE_READY);
gst_element_set_state (camerabin->audio_volume, GST_STATE_READY);
gst_element_set_state (camerabin->audio_src, GST_STATE_READY);
if (camerabin->audio_filter) {
gst_element_set_state (camerabin->audio_filter, GST_STATE_READY);
gst_element_sync_state_with_parent (camerabin->audio_filter);
}
gst_element_sync_state_with_parent (camerabin->audio_capsfilter);
gst_element_sync_state_with_parent (camerabin->audio_volume);
}
GST_DEBUG_OBJECT (camerabin, "Setting video state to idle");
camerabin->video_state = GST_CAMERA_BIN_VIDEO_IDLE;
g_cond_signal (&camerabin->video_state_cond);
g_mutex_unlock (&camerabin->video_capture_mutex);
gst_object_unref (camerabin);
return NULL;
}
static void
gst_camera_bin_handle_message (GstBin * bin, GstMessage * message)
{
GstCameraBin2 *camerabin = GST_CAMERA_BIN2_CAST (bin);
gboolean dec_counter = FALSE;
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")) {
filename = gst_structure_get_string (structure, "filename");
GST_DEBUG_OBJECT (bin, "Got file save message from multifilesink, "
"image %s has been saved", filename);
if (filename) {
gst_image_capture_bin_post_image_done (GST_CAMERA_BIN2_CAST (bin),
filename);
}
dec_counter = TRUE;
} else if (gst_structure_has_name (structure, "preview-image")) {
gchar *location = NULL;
g_mutex_lock (&camerabin->preview_list_mutex);
if (camerabin->preview_location_list) {
location = camerabin->preview_location_list->data;
camerabin->preview_location_list =
g_slist_delete_link (camerabin->preview_location_list,
camerabin->preview_location_list);
GST_DEBUG_OBJECT (camerabin, "Adding preview location to preview "
"message '%s'", location);
} else {
GST_WARNING_OBJECT (camerabin, "Unexpected preview message received, "
"won't be able to put location field into the message. This can "
"happen if the source is posting previews while camerabin2 is "
"shutting down");
}
g_mutex_unlock (&camerabin->preview_list_mutex);
if (location) {
GstStructure *new_structure;
GValue value = { 0 };
g_value_init (&value, G_TYPE_STRING);
g_value_take_string (&value, location);
/* need to do a copy because the structure isn't mutable */
new_structure = gst_structure_copy (structure);
gst_structure_take_value (new_structure, "location", &value);
gst_message_unref (message);
message =
gst_message_new_element (GST_OBJECT_CAST (camerabin),
new_structure);
}
GST_LOG_OBJECT (bin, "received preview-image message");
dec_counter = TRUE;
}
}
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_WARNING_OBJECT (bin, "Capture failed, reason: %s - %s",
err->message, debug);
if (camerabin->post_previews) {
gst_camera_bin_skip_next_preview (camerabin);
}
dec_counter = TRUE;
}
g_error_free (err);
g_free (debug);
}
break;
case GST_MESSAGE_EOS:{
GstElement *src = GST_ELEMENT (GST_MESSAGE_SRC (message));
if (src == GST_CAMERA_BIN2_CAST (bin)->videosink) {
g_mutex_lock (&camerabin->video_capture_mutex);
GST_DEBUG_OBJECT (bin, "EOS from video branch");
if (camerabin->video_state == GST_CAMERA_BIN_VIDEO_FINISHING) {
if (!g_thread_try_new ("reset-element-thread",
gst_camera_bin_video_reset_elements,
gst_object_ref (camerabin), NULL)) {
GST_WARNING_OBJECT (camerabin,
"Failed to create thread to "
"reset video elements' state, video recordings may not work "
"anymore");
gst_object_unref (camerabin);
camerabin->video_state = GST_CAMERA_BIN_VIDEO_IDLE;
}
} else if (camerabin->video_state == GST_CAMERA_BIN_VIDEO_IDLE) {
GST_DEBUG_OBJECT (camerabin, "Received EOS from video branch but "
"video recording is idle, ignoring");
} else {
GST_WARNING_OBJECT (camerabin, "Received EOS from video branch but "
"video is recording and stop-capture wasn't requested");
g_assert_not_reached ();
}
g_mutex_unlock (&camerabin->video_capture_mutex);
}
}
break;
default:
break;
}
GST_BIN_CLASS (parent_class)->handle_message (bin, message);
if (dec_counter)
GST_CAMERA_BIN2_PROCESSING_DEC (camerabin);
}
/*
* 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 (GstCameraBin2 * camera,
GstElement ** current_filter, GstElement * new_filter,
GstElement * previous_element, GstElement * next_element,
const gchar * prev_elem_pad)
{
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));
}
if (prev_elem_pad) {
if (new_filter) {
gst_element_link_pads (previous_element, prev_elem_pad, new_filter, NULL);
gst_element_link (new_filter, next_element);
} else {
gst_element_link_pads (previous_element, prev_elem_pad, next_element,
NULL);
}
} else {
if (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,
GstCameraBin2 * camera)
{
GstElementFactory *factory = gst_element_get_factory (new_element);
if (factory != NULL) {
if (strcmp (GST_OBJECT_NAME (factory), "audiorate") == 0 ||
strcmp (GST_OBJECT_NAME (factory), "videorate") == 0) {
g_object_set (new_element, "skip-to-first", TRUE, NULL);
}
}
if (GST_IS_TAG_SETTER (new_element)) {
GstTagSetter *tagsetter = GST_TAG_SETTER (new_element);
gst_tag_setter_set_tag_merge_mode (tagsetter, GST_TAG_MERGE_REPLACE);
}
}
#define VIDEO_PAD 1
#define AUDIO_PAD 2
static GstPad *
encodebin_find_pad (GstCameraBin2 * camera, GstElement * encodebin,
gint pad_type)
{
GValue value = { 0 };
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, &value)) {
case GST_ITERATOR_OK:
pad = g_value_dup_object (&value);
g_value_unset (&value);
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_%u" : "audio_%u");
if (!tmpl) {
GST_DEBUG_OBJECT (camera, "No templates found, can't request pad");
return NULL;
}
pad = gst_element_request_pad (encodebin, tmpl, NULL, NULL);
GST_DEBUG_OBJECT (camera, "Got pad: %s", pad ? GST_PAD_NAME (pad) : "null");
}
return pad;
}
static gboolean
gst_camera_bin_video_profile_has_audio (GstCameraBin2 * 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 (GstCameraBin2 * 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_full (srcpad, sinkpad, GST_PAD_LINK_CHECK_CAPS);
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)
{
GParamSpecFloat *zoom_pspec;
GstCameraBin2 *camera = (GstCameraBin2 *) user_data;
g_object_get (self, "max-zoom", &camera->max_zoom, NULL);
GST_DEBUG_OBJECT (camera, "Max zoom updated to %f", camera->max_zoom);
/* update zoom pspec */
zoom_pspec =
G_PARAM_SPEC_FLOAT (g_object_class_find_property (G_OBJECT_GET_CLASS
(G_OBJECT (camera)), "zoom"));
zoom_pspec->maximum = camera->max_zoom;
g_object_notify (G_OBJECT (camera), "max-zoom");
}
static void
gst_camera_bin_src_notify_zoom_cb (GObject * self, GParamSpec * pspec,
gpointer user_data)
{
GstCameraBin2 *camera = (GstCameraBin2 *) user_data;
g_object_get (self, "zoom", &camera->zoom, NULL);
GST_DEBUG_OBJECT (camera, "Zoom updated to %f", camera->zoom);
g_object_notify (G_OBJECT (camera), "zoom");
}
static GstPadProbeReturn
gst_camera_bin_image_src_buffer_probe (GstPad * pad, GstPadProbeInfo * info,
gpointer data)
{
GstPadProbeReturn ret = GST_PAD_PROBE_OK;
GstCameraBin2 *camerabin = data;
GstEvent *evt;
gchar *location = NULL;
GstPad *peer;
GstTagList *tags;
g_mutex_lock (&camerabin->image_capture_mutex);
/* Push pending image tags */
if (camerabin->image_tags_list) {
tags = camerabin->image_tags_list->data;
camerabin->image_tags_list =
g_slist_delete_link (camerabin->image_tags_list,
camerabin->image_tags_list);
GST_DEBUG_OBJECT (camerabin, "Pushing tags from application: %"
GST_PTR_FORMAT, tags);
if (tags) {
peer = gst_pad_get_peer (pad);
gst_pad_send_event (peer, gst_event_new_tag (tags));
gst_object_unref (peer);
}
} else {
GST_DEBUG_OBJECT (camerabin, "No tags from application to send");
}
/* Push image location event */
if (camerabin->image_location_list) {
location = camerabin->image_location_list->data;
camerabin->image_location_list =
g_slist_delete_link (camerabin->image_location_list,
camerabin->image_location_list);
GST_DEBUG_OBJECT (camerabin, "Sending image location change to '%s'",
location);
} else {
GST_DEBUG_OBJECT (camerabin, "No filename location change to send");
g_mutex_unlock (&camerabin->image_capture_mutex);
return ret;
}
g_mutex_unlock (&camerabin->image_capture_mutex);
if (location) {
evt = gst_camera_bin_new_event_file_location (location);
peer = gst_pad_get_peer (pad);
gst_pad_send_event (peer, evt);
gst_object_unref (peer);
g_free (location);
} else {
/* This means we don't have to encode the capture, it is used for
* signaling the application just wants the preview */
ret = GST_PAD_PROBE_DROP;
GST_CAMERA_BIN2_PROCESSING_DEC (camerabin);
}
return ret;
}
static GstPadProbeReturn
gst_camera_bin_image_sink_event_probe (GstPad * pad, GstPadProbeInfo * info,
gpointer data)
{
GstCameraBin2 *camerabin = data;
GstEvent *event = GST_EVENT (info->data);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_DOWNSTREAM:{
if (gst_event_has_name (event, "new-location")) {
const GstStructure *structure = gst_event_get_structure (event);
const gchar *filename = gst_structure_get_string (structure,
"location");
gst_element_set_state (camerabin->imagesink, GST_STATE_NULL);
GST_DEBUG_OBJECT (camerabin, "Setting filename to imagesink: %s",
filename);
g_object_set (camerabin->imagesink, "location", filename, NULL);
if (gst_element_set_state (camerabin->imagesink, GST_STATE_PLAYING) ==
GST_STATE_CHANGE_FAILURE) {
/* Resets the latest state change return, that would be a failure
* and could cause problems in a camerabin2 state change */
gst_element_set_state (camerabin->imagesink, GST_STATE_NULL);
}
}
}
break;
default:
break;
}
return GST_PAD_PROBE_OK;
}
static GstPadProbeReturn
gst_camera_bin_audio_src_data_probe (GstPad * pad, GstPadProbeInfo * info,
gpointer data)
{
GstCameraBin2 *camera = data;
gboolean ret = GST_PAD_PROBE_OK;
if (GST_IS_BUFFER (info->data)) {
if (G_UNLIKELY (camera->audio_send_newseg)) {
GstBuffer *buf = GST_BUFFER_CAST (info->data);
GstClockTime ts = GST_BUFFER_TIMESTAMP (buf);
GstPad *peer;
GstSegment segment;
if (!GST_CLOCK_TIME_IS_VALID (ts)) {
ts = 0;
}
peer = gst_pad_get_peer (pad);
g_return_val_if_fail (peer != NULL, TRUE);
gst_segment_init (&segment, GST_FORMAT_TIME);
segment.start = ts;
gst_pad_send_event (peer, gst_event_new_segment (&segment));
gst_object_unref (peer);
camera->audio_send_newseg = FALSE;
}
} else {
GstEvent *event = GST_EVENT_CAST (data);
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
/* we only let an EOS pass when the user is stopping a capture */
if (camera->audio_drop_eos) {
ret = GST_PAD_PROBE_DROP;
} else {
camera->audio_drop_eos = TRUE;
/* should already be false, but reinforce in case no buffers get
* pushed */
camera->audio_send_newseg = FALSE;
}
} else if (GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT) {
ret = GST_PAD_PROBE_DROP;
}
}
return ret;
}
/**
* gst_camera_bin_create_elements:
* @param camera: the #GstCameraBin2
*
* Creates all elements inside #GstCameraBin2
*
* 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 (GstCameraBin2 * camera)
{
gboolean new_src = FALSE;
gboolean new_audio_src = FALSE;
gboolean has_audio;
gboolean profile_switched = FALSE;
const gchar *missing_element_name;
gint encbin_flags = 0;
if (!camera->elements_created) {
/* Check that elements created in _init were really created */
if (!(camera->audio_capsfilter && camera->videobin_capsfilter &&
camera->imagebin_capsfilter && camera->viewfinderbin_capsfilter)) {
missing_element_name = "capsfilter";
goto missing_element;
}
camera->video_encodebin =
gst_element_factory_make ("encodebin", "video-encodebin");
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");
if (!camera->videosink) {
missing_element_name = "filesink";
goto missing_element;
}
g_object_set (camera->videosink, "async", FALSE, NULL);
/* audio elements */
if (!camera->audio_volume) {
missing_element_name = "volume";
goto missing_element;
}
if (camera->video_profile == NULL) {
GstEncodingContainerProfile *prof;
GstCaps *caps;
caps = gst_caps_new_empty_simple ("application/ogg");
prof = gst_encoding_container_profile_new ("ogg", "theora+vorbis+ogg",
caps, NULL);
gst_caps_unref (caps);
caps = gst_caps_new_empty_simple ("video/x-theora");
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_empty_simple ("audio/x-vorbis");
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", "image-encodebin");
if (!camera->image_encodebin) {
missing_element_name = "encodebin";
goto missing_element;
}
/* durations have no meaning for image captures */
g_object_set (camera->image_encodebin, "queue-time-max", (guint64) 0, NULL);
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) {
GstEncodingVideoProfile *vprof;
GstCaps *caps;
caps = gst_caps_new_empty_simple ("image/jpeg");
vprof = gst_encoding_video_profile_new (caps, NULL, NULL, 1);
gst_encoding_video_profile_set_variableframerate (vprof, TRUE);
gst_caps_unref (caps);
camera->image_profile = (GstEncodingProfile *) vprof;
camera->image_profile_switch = TRUE;
}
camera->viewfinderbin_queue =
gst_element_factory_make ("queue", "viewfinderbin-queue");
if (!camera->viewfinderbin_queue) {
missing_element_name = "queue";
goto missing_element;
}
g_object_set (camera->viewfinderbin_queue, "leaky", 2, "silent", TRUE,
"max-size-time", (guint64) 0, "max-size-bytes", (guint) 0,
"max-size-buffers", (guint) 1, 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->viewfinderbin_queue), NULL);
gst_element_link_pads_full (camera->video_encodebin, "src",
camera->videosink, "sink", GST_PAD_LINK_CHECK_NOTHING);
gst_element_link_pads_full (camera->image_encodebin, "src",
camera->imagesink, "sink", GST_PAD_LINK_CHECK_NOTHING);
gst_element_link_pads_full (camera->viewfinderbin_queue, "src",
camera->viewfinderbin_capsfilter, "sink", GST_PAD_LINK_CHECK_CAPS);
gst_element_link_pads_full (camera->viewfinderbin_capsfilter, "src",
camera->viewfinderbin, "sink", GST_PAD_LINK_CHECK_CAPS);
{
/* set an event probe to watch for custom location changes */
GstPad *srcpad;
srcpad = gst_element_get_static_pad (camera->image_encodebin, "src");
gst_pad_add_probe (srcpad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
gst_camera_bin_image_sink_event_probe, camera, NULL);
gst_object_unref (srcpad);
}
/*
* 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->location, NULL);
g_object_set (camera->imagesink, "location", camera->location, NULL);
}
/* propagate the flags property by translating appropriate values
* to GstEncFlags values */
if (camera->flags & GST_CAM_FLAG_NO_AUDIO_CONVERSION)
encbin_flags |= (1 << 0);
if (camera->flags & GST_CAM_FLAG_NO_VIDEO_CONVERSION)
encbin_flags |= (1 << 1);
g_object_set (camera->video_encodebin, "flags", encbin_flags, NULL);
/* image encodebin has only video branch so disable its conversion elements
* appropriately */
if (camera->flags & GST_CAM_FLAG_NO_IMAGE_CONVERSION)
g_object_set (camera->image_encodebin, "flags", (1 << 1), NULL);
g_object_set (camera->viewfinderbin, "disable-converters",
camera->flags & GST_CAM_FLAG_NO_VIEWFINDER_CONVERSION ? TRUE : FALSE,
NULL);
if (camera->video_profile_switch) {
GST_DEBUG_OBJECT (camera, "Switching video-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 image-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_signal_connect (G_OBJECT (camera->src), "notify::zoom",
(GCallback) gst_camera_bin_src_notify_zoom_cb, camera);
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) {
GstPad *imgsrc = gst_element_get_static_pad (camera->src, "imgsrc");
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);
if (!gst_element_link_pads (camera->src, "vfsrc",
camera->viewfinderbin_queue, "sink")) {
GST_ERROR_OBJECT (camera,
"Failed to link camera source's vfsrc pad to viewfinder queue");
goto fail;
}
if (!gst_element_link_pads (camera->src, "imgsrc",
camera->imagebin_capsfilter, "sink")) {
GST_ERROR_OBJECT (camera,
"Failed to link camera source's imgsrc pad to image bin capsfilter");
goto fail;
}
if (!gst_element_link_pads (camera->src, "vidsrc",
camera->videobin_capsfilter, "sink")) {
GST_ERROR_OBJECT (camera,
"Failed to link camera source's vidsrc pad to video bin capsfilter");
goto fail;
}
gst_pad_add_probe (imgsrc, GST_PAD_PROBE_TYPE_BUFFER,
gst_camera_bin_image_src_buffer_probe, camera, NULL);
gst_object_unref (imgsrc);
}
gst_camera_bin_check_and_replace_filter (camera, &camera->image_filter,
camera->user_image_filter, camera->src, camera->imagebin_capsfilter,
"imgsrc");
gst_camera_bin_check_and_replace_filter (camera, &camera->video_filter,
camera->user_video_filter, camera->src, camera->videobin_capsfilter,
"vidsrc");
gst_camera_bin_check_and_replace_filter (camera, &camera->viewfinder_filter,
camera->user_viewfinder_filter, camera->viewfinderbin_queue,
camera->viewfinderbin_capsfilter, NULL);
/* 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_volume);
gst_bin_remove (GST_BIN_CAST (camera), camera->audio_capsfilter);
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");
if (!camera->audio_src) {
missing_element_name = DEFAULT_AUDIO_SRC;
goto missing_element;
}
}
gst_element_set_locked_state (camera->audio_src, TRUE);
new_audio_src = TRUE;
}
if (new_audio_src) {
GstPad *srcpad;
if (g_object_class_find_property (G_OBJECT_GET_CLASS (camera->audio_src),
"provide-clock")) {
g_object_set (camera->audio_src, "provide-clock", FALSE, NULL);
}
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_volume));
gst_bin_add (GST_BIN_CAST (camera),
gst_object_ref (camera->audio_capsfilter));
gst_element_link_pads_full (camera->audio_src, "src",
camera->audio_volume, "sink", GST_PAD_LINK_CHECK_CAPS);
gst_element_link_pads_full (camera->audio_volume, "src",
camera->audio_capsfilter, "sink", GST_PAD_LINK_CHECK_CAPS);
srcpad = gst_element_get_static_pad (camera->audio_src, "src");
/* drop EOS for audiosrc elements that push them on state_changes
* (basesrc does this) */
gst_pad_add_probe (srcpad, GST_PAD_PROBE_TYPE_DATA_DOWNSTREAM,
gst_camera_bin_audio_src_data_probe, camera, NULL);
gst_object_unref (srcpad);
}
if (has_audio) {
gst_camera_bin_check_and_replace_filter (camera, &camera->audio_filter,
camera->user_audio_filter, camera->audio_src, camera->audio_volume,
"src");
}
if ((profile_switched && has_audio) || new_audio_src) {
if (GST_PAD_LINK_FAILED (gst_camera_bin_link_encodebin (camera,
camera->video_encodebin, camera->audio_capsfilter,
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 void
_gst_tag_list_unref_maybe (GstTagList * taglist)
{
if (taglist)
gst_tag_list_unref (taglist);
}
static GstStateChangeReturn
gst_camera_bin_change_state (GstElement * element, GstStateChange trans)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstCameraBin2 *camera = GST_CAMERA_BIN2_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_BIN2_RESET_PROCESSING_COUNTER (camera);
camera->audio_drop_eos = TRUE;
camera->audio_send_newseg = FALSE;
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_BIN2_RESET_PROCESSING_COUNTER (camera);
camera->video_state = GST_CAMERA_BIN_VIDEO_IDLE;
g_mutex_lock (&camera->image_capture_mutex);
g_slist_foreach (camera->image_location_list, (GFunc) g_free, NULL);
g_slist_free (camera->image_location_list);
camera->image_location_list = NULL;
g_slist_foreach (camera->image_tags_list,
(GFunc) _gst_tag_list_unref_maybe, NULL);
g_slist_free (camera->image_tags_list);
camera->image_tags_list = NULL;
g_mutex_unlock (&camera->image_capture_mutex);
g_mutex_lock (&camera->preview_list_mutex);
g_slist_foreach (camera->preview_location_list, (GFunc) g_free, NULL);
g_slist_free (camera->preview_location_list);
camera->preview_location_list = NULL;
g_mutex_unlock (&camera->preview_list_mutex);
/* explicitly set to READY as they might be outside of the bin */
gst_element_set_state (camera->audio_volume, GST_STATE_READY);
gst_element_set_state (camera->audio_capsfilter, 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_volume, GST_STATE_NULL);
gst_element_set_state (camera->audio_capsfilter, GST_STATE_NULL);
break;
default:
break;
}
return ret;
}
static gboolean
gst_camera_bin_send_event (GstElement * element, GstEvent * event)
{
GstCameraBin2 *camera = GST_CAMERA_BIN2_CAST (element);
gboolean res;
/* avoid losing our ref to send_event */
gst_event_ref (event);
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;
}
gst_event_unref (event);
return res;
}
static void
gst_camera_bin_set_location (GstCameraBin2 * camera, const gchar * location)
{
GST_DEBUG_OBJECT (camera, "Setting mode %d location to %s", camera->mode,
location);
g_free (camera->location);
camera->location = g_strdup (location);
}
static void
gst_camera_bin_set_audio_src (GstCameraBin2 * 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)
gst_object_ref (src);
camera->user_audio_src = src;
}
static void
gst_camera_bin_set_camera_src (GstCameraBin2 * 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)
gst_object_ref (src);
camera->user_src = src;
}
static void
gst_camera_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCameraBin2 *camera = GST_CAMERA_BIN2_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));
if (G_LIKELY (camera->audio_capsfilter)) {
g_object_set (camera->audio_capsfilter, "caps",
gst_value_get_caps (value), NULL);
} else {
GST_WARNING_OBJECT (camera, "Audio capsfilter missing");
}
}
break;
case PROP_IMAGE_CAPTURE_CAPS:{
GST_DEBUG_OBJECT (camera,
"Setting image capture caps to %" GST_PTR_FORMAT,
gst_value_get_caps (value));
if (G_LIKELY (camera->imagebin_capsfilter)) {
g_object_set (camera->imagebin_capsfilter, "caps",
gst_value_get_caps (value), NULL);
} else {
GST_WARNING_OBJECT (camera, "Image capsfilter missing");
}
}
break;
case PROP_VIDEO_CAPTURE_CAPS:{
GST_DEBUG_OBJECT (camera,
"Setting video capture caps to %" GST_PTR_FORMAT,
gst_value_get_caps (value));
if (G_LIKELY (camera->videobin_capsfilter)) {
g_object_set (camera->videobin_capsfilter, "caps",
gst_value_get_caps (value), NULL);
} else {
GST_WARNING_OBJECT (camera, "Video capsfilter missing");
}
}
break;
case PROP_VIEWFINDER_CAPS:{
GST_DEBUG_OBJECT (camera,
"Setting viewfinder capture caps to %" GST_PTR_FORMAT,
gst_value_get_caps (value));
if (G_LIKELY (camera->viewfinderbin_capsfilter)) {
g_object_set (camera->viewfinderbin_capsfilter, "caps",
gst_value_get_caps (value), NULL);
} else {
GST_WARNING_OBJECT (camera, "Viewfinder capsfilter missing");
}
}
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 *) g_value_dup_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_AUDIO_FILTER:
if (camera->user_audio_filter)
g_object_unref (camera->user_audio_filter);
camera->user_audio_filter = g_value_dup_object (value);
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 *) g_value_dup_object (value);
/* make sure we set variable framerate here to prevent videorate from
* being used in encodebin. It will always keep a buffer stored
* internally and push it when a second one arrives. This breaks
* the image capture */
if (GST_IS_ENCODING_VIDEO_PROFILE (camera->image_profile))
gst_encoding_video_profile_set_variableframerate (
(GstEncodingVideoProfile *) camera->image_profile, TRUE);
else if (GST_IS_ENCODING_CONTAINER_PROFILE (camera->image_profile)) {
const GList *profs =
gst_encoding_container_profile_get_profiles (
(GstEncodingContainerProfile *) camera->image_profile);
for (; profs; profs = g_list_next (profs)) {
if (GST_IS_ENCODING_VIDEO_PROFILE (profs->data)) {
gst_encoding_video_profile_set_variableframerate (profs->data,
TRUE);
}
}
}
camera->image_profile_switch = TRUE;
break;
case PROP_FLAGS:
camera->flags = g_value_get_flags (value);
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)
{
GstCameraBin2 *camera = GST_CAMERA_BIN2_CAST (object);
switch (prop_id) {
case PROP_MODE:
g_value_set_enum (value, camera->mode);
break;
case PROP_LOCATION:
g_value_set_string (value, camera->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_query_caps (pad, NULL);
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;
if (G_LIKELY (camera->audio_capsfilter)) {
g_object_get (camera->audio_capsfilter, "caps", &caps, NULL);
} else {
GST_WARNING ("Missing audio capsfilter");
}
gst_value_set_caps (value, caps);
gst_caps_unref (caps);
}
break;
case PROP_IMAGE_CAPTURE_CAPS:{
GstCaps *caps = NULL;
if (G_LIKELY (camera->imagebin_capsfilter)) {
g_object_get (camera->imagebin_capsfilter, "caps", &caps, NULL);
} else {
GST_WARNING ("Missing imagebin capsfilter");
}
gst_value_set_caps (value, caps);
gst_caps_unref (caps);
}
break;
case PROP_VIDEO_CAPTURE_CAPS:{
GstCaps *caps = NULL;
if (G_LIKELY (camera->videobin_capsfilter)) {
g_object_get (camera->videobin_capsfilter, "caps", &caps, NULL);
} else {
GST_WARNING ("Missing imagebin capsfilter");
}
gst_value_set_caps (value, caps);
gst_caps_unref (caps);
}
break;
case PROP_VIEWFINDER_CAPS:{
GstCaps *caps = NULL;
if (G_LIKELY (camera->viewfinderbin_capsfilter)) {
g_object_get (camera->viewfinderbin_capsfilter, "caps", &caps, NULL);
} else {
GST_WARNING ("Missing imagebin capsfilter");
}
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) {
g_value_set_object (value, 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_AUDIO_FILTER:
if (camera->user_audio_filter)
g_value_set_object (value, camera->user_audio_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) {
g_value_set_object (value, camera->image_profile);
}
break;
case PROP_IDLE:
g_value_set_boolean (value,
g_atomic_int_get (&camera->processing_counter) == 0);
break;
case PROP_FLAGS:
g_value_set_flags (value, camera->flags);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
gboolean
gst_camera_bin2_plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gst_camera_bin_debug, "camerabin", 0, "CameraBin");
return gst_element_register (plugin, "camerabin", GST_RANK_NONE,
gst_camera_bin2_get_type ());
}
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