--- a/gst_plugins_good/gst/camerabin/gstcamerabin.c Fri Jun 11 16:24:58 2010 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,2769 +0,0 @@
-/*
- * GStreamer
- * Copyright (C) 2008 Nokia Corporation <multimedia@maemo.org>
- *
- * 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:gstcamerabin
- * @short_description: camera capture bin
- *
- * <refsect2>
- * <para>
- * GstCameraBin is a high-level camera object that encapsulates the gstreamer
- * internals and provides a task based API for the application. It consists of
- * three main data paths: view-finder, image capture and video capture.
- * </para>
- * <informalfigure>
- * <mediaobject>
- * <imageobject><imagedata fileref="camerabin.png"/></imageobject>
- * <textobject><phrase>CameraBin structure</phrase></textobject>
- * <caption><para>Structural decomposition of CameraBin object.</para></caption>
- * </mediaobject>
- * </informalfigure>
- * </refsect2>
- * <refsect2>
- * <title>Example launch line</title>
- * <para>
- * <programlisting>
- * gst-launch -v -m camerabin filename=test.jpeg
- * </programlisting>
- * </para>
- * </refsect2>
- * <refsect2>
- * <title>Image capture</title>
- * <para>
- * Taking still images is initiated with the #GstCameraBin::user-start action
- * signal. Once the image has captured, #GstCameraBin::img-done signal is fired.
- * It allows to decide wheter to take another picture (burst capture, bracketing
- * shot) or stop capturing. The last captured image is shown
- * until one switches back to view finder using #GstCameraBin::user-stop action
- * signal.
- * </para>
- * <para>
- * Available resolutions can be taken from the #GstCameraBin:inputcaps property.
- * Image capture resolution can be set with #GstCameraBin::user-image-res
- * action signal.
- * </para>
- * </refsect2>
- * <refsect2>
- * <title>Video capture</title>
- * <para>
- * Video capture is started with the #GstCameraBin::user-start action signal too.
- * In addition to image capture one can use #GstCameraBin::user-pause to
- * pause recording and #GstCameraBin::user-stop to end recording.
- * </para>
- * <para>
- * Available resolutions and fps can be taken from the #GstCameraBin:inputcaps
- * property. #GstCameraBin::user-res-fps action signal can be used to set frame
- * rate and resolution for the video recording and view finder as well.
- * </para>
- * </refsect2>
- * <refsect2>
- * <title>Photography interface</title>
- * <para>
- * GstCameraBin implements gst photography interface, which can be used to set
- * and get different settings related to digital imaging. Since currently many
- * of these settings require low-level support the photography interface support
- * is dependent on video src element. In practice photography interface settings
- * cannot be used successfully until in PAUSED state when the video src has
- * opened the video device.
- * </para>
- * </refsect2>
- * <refsect2>
- * <title>States</title>
- * <para>
- * Elements within GstCameraBin are created and destroyed when switching
- * between NULL and READY states. Therefore element properties should be set
- * in NULL state. User set elements are not unreffed until GstCameraBin is
- * unreffed or replaced by a new user set element. Initially only elements needed
- * for view finder mode are created to speed up startup. Image bin and video bin
- * elements are created when setting the mode or starting capture.
- * </para>
- * </refsect2>
- * <refsect2>
- * <note>
- * <para>
- * Since the muxers tested so far have problems with discontinous buffers, QoS
- * has been disabled, and then in order to record video, you MUST ensure that
- * there is enough CPU to encode the video. Thus choose smart resolution and
- * frames per second values. It is also highly recommended to avoid color
- * conversions; make sure all the elements involved work with the same colorspace
- * (i.e. rgb or yuv i420 or whatelse).
- * </para>
- * </note>
- * </refsect2>
- */
-
-/*
- * The pipeline in the camerabin is
- *
- * "image bin"
- * videosrc ! crop ! scale ! out-sel <------> in-sel ! scale ! ffmpegcsp ! vfsink
- * "video bin"
- *
- * it is possible to have 'ffmpegcolorspace' and 'capsfilter' just after
- * v4l2camsrc
- *
- * The properties of elements are:
- *
- * vfsink - "sync", FALSE, "qos", FALSE
- * output-selector - "resend-latest", FALSE
- * input-selector - "select-all", TRUE
- */
-
-/*
- * includes
- */
-
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-
-#include <string.h>
-#include <stdlib.h>
-
-#include <gst/gst.h>
-/* FIXME: include #include <gst/gst-i18n-plugin.h> and use _(" ") */
-
-#ifndef __SYMBIAN32__
-#include <gst/gst-i18n-plugin.h>
-#else
-#include <gst/gst-i18n-plugin.h>
-#endif
-
-#ifdef __SYMBIAN32__
-#include <gst/gstinfo.h>
-#endif
-
-
-
-
-#include "gstcamerabin.h"
-#include "gstcamerabinxoverlay.h"
-#include "gstcamerabincolorbalance.h"
-#include "gstcamerabinphotography.h"
-
-#include "camerabingeneral.h"
-
-#include "gstcamerabin-marshal.h"
-
-#ifdef __SYMBIAN32__
-#include <glib_global.h>
-#endif
-/*
- * enum and types
- */
-
-enum
-{
- /* action signals */
- USER_START_SIGNAL,
- USER_STOP_SIGNAL,
- USER_PAUSE_SIGNAL,
- USER_RES_FPS_SIGNAL,
- USER_IMAGE_RES_SIGNAL,
- /* emit signals */
- IMG_DONE_SIGNAL,
- LAST_SIGNAL
-};
-
-enum
-{
- ARG_0,
- ARG_FILENAME,
- ARG_MODE,
- ARG_MUTE,
- ARG_ZOOM,
- ARG_IMAGE_POST,
- ARG_IMAGE_ENC,
- ARG_VIDEO_POST,
- ARG_VIDEO_ENC,
- ARG_AUDIO_ENC,
- ARG_VIDEO_MUX,
- ARG_VF_SINK,
- ARG_VIDEO_SRC,
- ARG_AUDIO_SRC,
- ARG_INPUT_CAPS,
- ARG_FILTER_CAPS
-};
-
-/*
- * defines and static global vars
- */
-
-static guint camerabin_signals[LAST_SIGNAL];
-
-#define GST_TYPE_CAMERABIN_MODE (gst_camerabin_mode_get_type ())
-
-/* default and range values for args */
-
-#define DEFAULT_MODE MODE_IMAGE
-#define DEFAULT_ZOOM 100
-#define DEFAULT_WIDTH 640
-#define DEFAULT_HEIGHT 480
-#define DEFAULT_CAPTURE_WIDTH 800
-#define DEFAULT_CAPTURE_HEIGHT 600
-#define DEFAULT_FPS_N 0 /* makes it use the default */
-#define DEFAULT_FPS_D 1
-#define CAMERABIN_DEFAULT_VF_CAPS "video/x-raw-yuv,format=(fourcc)I420"
-/* Using "bilinear" as default zoom method */
-#define CAMERABIN_DEFAULT_ZOOM_METHOD 1
-
-#define MIN_ZOOM 100
-#define MAX_ZOOM 1000
-#define ZOOM_1X MIN_ZOOM
-
-#define DEFAULT_V4L2CAMSRC_DRIVER_NAME "omap3cam"
-
-/* internal element names */
-
-#define USE_COLOR_CONVERTER 1
-
-/* FIXME: Make sure this can work with autovideosrc and use that. */
-#define DEFAULT_SRC_VID_SRC "v4l2src"
-
-#define DEFAULT_VIEW_SINK "autovideosink"
-
-/*
- * static helper functions declaration
- */
-
-static void camerabin_setup_src_elements (GstCameraBin * camera);
-
-static gboolean camerabin_create_src_elements (GstCameraBin * camera);
-
-static void camerabin_setup_view_elements (GstCameraBin * camera);
-
-static gboolean camerabin_create_view_elements (GstCameraBin * camera);
-
-static gboolean camerabin_create_elements (GstCameraBin * camera);
-
-static void camerabin_destroy_elements (GstCameraBin * camera);
-
-static void camerabin_dispose_elements (GstCameraBin * camera);
-
-static void gst_camerabin_change_mode (GstCameraBin * camera, gint mode);
-
-static void
-gst_camerabin_change_filename (GstCameraBin * camera, const gchar * name);
-
-static void gst_camerabin_setup_zoom (GstCameraBin * camera);
-
-static GstCaps *gst_camerabin_get_allowed_input_caps (GstCameraBin * camera);
-
-static void gst_camerabin_rewrite_tags (GstCameraBin * camera);
-
-static void
-gst_camerabin_set_capsfilter_caps (GstCameraBin * camera, GstCaps * new_caps);
-
-static void gst_camerabin_start_image_capture (GstCameraBin * camera);
-
-static void gst_camerabin_start_video_recording (GstCameraBin * camera);
-
-static gboolean
-gst_camerabin_have_img_buffer (GstPad * pad, GstBuffer * buffer,
- gpointer u_data);
-static gboolean
-gst_camerabin_have_vid_buffer (GstPad * pad, GstBuffer * buffer,
- gpointer u_data);
-
-static void gst_camerabin_reset_to_view_finder (GstCameraBin * camera);
-
-static void gst_camerabin_do_stop (GstCameraBin * camera);
-
-static void
-gst_camerabin_set_allowed_framerate (GstCameraBin * camera,
- GstCaps * filter_caps);
-
-/*
- * GObject callback functions declaration
- */
-
-static void gst_camerabin_base_init (gpointer gclass);
-
-static void gst_camerabin_class_init (GstCameraBinClass * klass);
-
-static void
-gst_camerabin_init (GstCameraBin * camera, GstCameraBinClass * gclass);
-
-static void gst_camerabin_dispose (GObject * object);
-
-static void gst_camerabin_finalize (GObject * object);
-
-static void gst_camerabin_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec);
-
-static void gst_camerabin_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec);
-
-static const GValue *gst_camerabin_find_better_framerate (GstCameraBin * camera,
- GstStructure * st, const GValue * orig_framerate);
-/*
- * GstElement function declarations
- */
-
-static GstStateChangeReturn
-gst_camerabin_change_state (GstElement * element, GstStateChange transition);
-
-
-/*
- * GstBin function declarations
- */
-static void
-gst_camerabin_handle_message_func (GstBin * bin, GstMessage * message);
-
-
-/*
- * Action signal function declarations
- */
-
-static void gst_camerabin_user_start (GstCameraBin * camera);
-
-static void gst_camerabin_user_stop (GstCameraBin * camera);
-
-static void gst_camerabin_user_pause (GstCameraBin * camera);
-
-static void
-gst_camerabin_user_res_fps (GstCameraBin * camera, gint width, gint height,
- gint fps_n, gint fps_d);
-
-static void
-gst_camerabin_user_image_res (GstCameraBin * camera, gint width, gint height);
-
-
-/*
- * GST BOILERPLATE and GObject types
- */
-
-static GType
-gst_camerabin_mode_get_type (void)
-{
- static GType gtype = 0;
-
- if (gtype == 0) {
- static const GEnumValue values[] = {
- {MODE_IMAGE, "Still image capture (default)", "mode-image"},
- {MODE_VIDEO, "Video recording", "mode-video"},
- {0, NULL, NULL}
- };
-
- gtype = g_enum_register_static ("GstCameraBinMode", values);
- }
- return gtype;
-}
-
-static gboolean
-gst_camerabin_iface_supported (GstImplementsInterface * iface, GType iface_type)
-{
- GstCameraBin *camera = GST_CAMERABIN (iface);
-
- if (iface_type == GST_TYPE_X_OVERLAY) {
- if (camera->view_sink) {
- return GST_IS_X_OVERLAY (camera->view_sink);
- }
- } else if (iface_type == GST_TYPE_COLOR_BALANCE) {
- if (camera->src_vid_src) {
- return GST_IS_COLOR_BALANCE (camera->src_vid_src);
- }
- } else if (iface_type == GST_TYPE_TAG_SETTER) {
- /* Note: Tag setter elements aren't
- present when image and video bin in NULL */
- GstElement *setter;
- setter = gst_bin_get_by_interface (GST_BIN (camera), iface_type);
- if (setter) {
- gst_object_unref (setter);
- return TRUE;
- } else {
- return FALSE;
- }
- } else if (iface_type == GST_TYPE_PHOTOGRAPHY) {
- if (camera->src_vid_src) {
- return GST_IS_PHOTOGRAPHY (camera->src_vid_src);
- }
- }
-
- return FALSE;
-}
-
-static void
-gst_camerabin_interface_init (GstImplementsInterfaceClass * klass)
-{
- /*
- * default virtual functions
- */
- klass->supported = gst_camerabin_iface_supported;
-}
-
-static void
-camerabin_init_interfaces (GType type)
-{
-
- static const GInterfaceInfo camerabin_info = {
- (GInterfaceInitFunc) gst_camerabin_interface_init,
- NULL,
- NULL,
- };
-
- static const GInterfaceInfo camerabin_xoverlay_info = {
- (GInterfaceInitFunc) gst_camerabin_xoverlay_init,
- NULL,
- NULL,
- };
-
- static const GInterfaceInfo camerabin_color_balance_info = {
- (GInterfaceInitFunc) gst_camerabin_color_balance_init,
- NULL,
- NULL,
- };
-
- static const GInterfaceInfo camerabin_tagsetter_info = {
- NULL,
- NULL,
- NULL,
- };
- static const GInterfaceInfo camerabin_photography_info = {
- (GInterfaceInitFunc) gst_camerabin_photography_init,
- NULL,
- NULL,
- };
-
- g_type_add_interface_static (type,
- GST_TYPE_IMPLEMENTS_INTERFACE, &camerabin_info);
-
- g_type_add_interface_static (type, GST_TYPE_X_OVERLAY,
- &camerabin_xoverlay_info);
-
- g_type_add_interface_static (type, GST_TYPE_COLOR_BALANCE,
- &camerabin_color_balance_info);
-
- g_type_add_interface_static (type, GST_TYPE_TAG_SETTER,
- &camerabin_tagsetter_info);
-
- g_type_add_interface_static (type, GST_TYPE_PHOTOGRAPHY,
- &camerabin_photography_info);
-}
-
-GST_BOILERPLATE_FULL (GstCameraBin, gst_camerabin, GstPipeline,
- GST_TYPE_PIPELINE, camerabin_init_interfaces);
-
-/*
- * static helper functions implementation
- */
-
-/*
- * camerabin_setup_src_elements:
- * @camera: camerabin object
- *
- * This function updates camerabin capsfilters according
- * to fps, resolution and zoom that have been configured
- * to camerabin.
- */
-static void
-camerabin_setup_src_elements (GstCameraBin * camera)
-{
- GstStructure *st;
- GstCaps *new_caps;
- gboolean detect_framerate = FALSE;
-
- if (!camera->view_finder_caps) {
- st = gst_structure_from_string (CAMERABIN_DEFAULT_VF_CAPS, NULL);
- } else {
- st = gst_structure_copy (gst_caps_get_structure (camera->view_finder_caps,
- 0));
- }
-
- if (camera->width > 0 && camera->height > 0) {
- gst_structure_set (st,
- "width", G_TYPE_INT, camera->width,
- "height", G_TYPE_INT, camera->height, NULL);
- }
-
- if (camera->fps_n > 0 && camera->fps_d > 0) {
- if (camera->night_mode) {
- GST_WARNING_OBJECT (camera,
- "night mode, lowest allowed fps will be forced");
- camera->pre_night_fps_n = camera->fps_n;
- camera->pre_night_fps_d = camera->fps_d;
- detect_framerate = TRUE;
- } else {
- gst_structure_set (st,
- "framerate", GST_TYPE_FRACTION, camera->fps_n, camera->fps_d, NULL);
- new_caps = gst_caps_new_full (st, NULL);
- }
- } else {
- GST_DEBUG_OBJECT (camera, "no framerate specified");
- detect_framerate = TRUE;
- }
-
- if (detect_framerate) {
- GST_DEBUG_OBJECT (camera, "detecting allowed framerate");
- /* Remove old framerate if any */
- if (gst_structure_has_field (st, "framerate")) {
- gst_structure_remove_field (st, "framerate");
- }
- new_caps = gst_caps_new_full (st, NULL);
-
- /* Set allowed framerate for the resolution */
- gst_camerabin_set_allowed_framerate (camera, new_caps);
- }
-
- /* Set default zoom method */
- g_object_set (camera->src_zoom_scale, "method",
- CAMERABIN_DEFAULT_ZOOM_METHOD, NULL);
-
- gst_caps_replace (&camera->view_finder_caps, new_caps);
-
- /* Set caps for view finder mode */
- gst_camerabin_set_capsfilter_caps (camera, camera->view_finder_caps);
-}
-
-/*
- * camerabin_create_src_elements:
- * @camera: camerabin object
- *
- * This function creates and links upstream side elements for camerabin.
- * videosrc ! cspconv ! capsfilter ! crop ! scale ! capsfilter ! out-sel !
- *
- * Returns: TRUE, if elements were successfully created, FALSE otherwise
- */
-static gboolean
-camerabin_create_src_elements (GstCameraBin * camera)
-{
- gboolean ret = FALSE;
- GstBin *cbin = GST_BIN (camera);
- gchar *driver_name = NULL;
-
- if (camera->user_vid_src) {
- camera->src_vid_src = camera->user_vid_src;
-
- if (!gst_camerabin_add_element (cbin, camera->src_vid_src)) {
- camera->src_vid_src = NULL;
- goto done;
- }
- } else if (!(camera->src_vid_src =
- gst_camerabin_create_and_add_element (cbin, DEFAULT_SRC_VID_SRC)))
- goto done;
-#ifdef USE_COLOR_CONVERTER
- if (!gst_camerabin_create_and_add_element (cbin, "ffmpegcolorspace"))
- goto done;
-#endif
- if (!(camera->src_filter =
- gst_camerabin_create_and_add_element (cbin, "capsfilter")))
- goto done;
- if (!(camera->src_zoom_crop =
- gst_camerabin_create_and_add_element (cbin, "videocrop")))
- goto done;
- if (!(camera->src_zoom_scale =
- gst_camerabin_create_and_add_element (cbin, "videoscale")))
- goto done;
- if (!(camera->src_zoom_filter =
- gst_camerabin_create_and_add_element (cbin, "capsfilter")))
- goto done;
- if (!(camera->src_out_sel =
- gst_camerabin_create_and_add_element (cbin, "output-selector")))
- goto done;
-
- camera->srcpad_zoom_filter =
- gst_element_get_static_pad (camera->src_zoom_filter, "src");
-
- /* Set default "driver-name" for v4l2camsrc if not set */
- if (g_object_class_find_property (G_OBJECT_GET_CLASS (camera->src_vid_src),
- "driver-name")) {
- g_object_get (G_OBJECT (camera->src_vid_src), "driver-name",
- &driver_name, NULL);
- if (!driver_name) {
- g_object_set (G_OBJECT (camera->src_vid_src), "driver-name",
- DEFAULT_V4L2CAMSRC_DRIVER_NAME, NULL);
- }
- }
-
- ret = TRUE;
-done:
- return ret;
-}
-
-/*
- * camerabin_setup_view_elements:
- * @camera: camerabin object
- *
- * This function configures properties for view finder sink element.
- */
-static void
-camerabin_setup_view_elements (GstCameraBin * camera)
-{
- GST_DEBUG_OBJECT (camera, "setting view finder properties");
- g_object_set (G_OBJECT (camera->view_in_sel), "select-all", TRUE, NULL);
- /* Set properties for view finder sink */
- /* Find the actual sink if using bin like autovideosink */
- if (GST_IS_BIN (camera->view_sink)) {
- GList *child = NULL, *children = GST_BIN_CHILDREN (camera->view_sink);
- for (child = children; child != NULL; child = g_list_next (children)) {
- GObject *ch = G_OBJECT (child->data);
- if (g_object_class_find_property (G_OBJECT_GET_CLASS (ch), "sync")) {
- g_object_set (G_OBJECT (ch), "sync", FALSE, "qos", FALSE, "async",
- FALSE, NULL);
- }
- }
- } else {
- g_object_set (G_OBJECT (camera->view_sink), "sync", FALSE, "qos", FALSE,
- "async", FALSE, NULL);
- }
-}
-
-/*
- * camerabin_create_view_elements:
- * @camera: camerabin object
- *
- * This function creates and links downstream side elements for camerabin.
- * ! scale ! cspconv ! view finder sink
- *
- * Returns: TRUE, if elements were successfully created, FALSE otherwise
- */
-static gboolean
-camerabin_create_view_elements (GstCameraBin * camera)
-{
- const GList *pads;
-
- if (!(camera->view_in_sel =
- gst_camerabin_create_and_add_element (GST_BIN (camera),
- "input-selector"))) {
- goto error;
- }
-
- /* Look for recently added input selector sink pad, we need to release it later */
- pads = GST_ELEMENT_PADS (camera->view_in_sel);
- while (pads != NULL
- && (GST_PAD_DIRECTION (GST_PAD (pads->data)) != GST_PAD_SINK)) {
- pads = g_list_next (pads);
- }
- camera->pad_view_img = GST_PAD (pads->data);
-
- if (!(camera->view_scale =
- gst_camerabin_create_and_add_element (GST_BIN (camera),
- "videoscale"))) {
- goto error;
- }
-#ifdef USE_COLOR_CONVERTER
- if (!gst_camerabin_create_and_add_element (GST_BIN (camera),
- "ffmpegcolorspace")) {
- goto error;
- }
-#endif
- if (camera->user_vf_sink) {
- camera->view_sink = camera->user_vf_sink;
- if (!gst_camerabin_add_element (GST_BIN (camera), camera->view_sink)) {
- goto error;
- }
- } else if (!(camera->view_sink =
- gst_camerabin_create_and_add_element (GST_BIN (camera),
- DEFAULT_VIEW_SINK))) {
- goto error;
- }
-
- return TRUE;
-error:
- return FALSE;
-}
-
-/*
- * camerabin_create_elements:
- * @camera: camerabin object
- *
- * This function creates and links all elements for camerabin,
- *
- * Returns: TRUE, if elements were successfully created, FALSE otherwise
- */
-static gboolean
-camerabin_create_elements (GstCameraBin * camera)
-{
- gboolean ret = FALSE;
- GstPadLinkReturn link_ret = GST_PAD_LINK_REFUSED;
- GstPad *unconnected_pad;
-
- GST_LOG_OBJECT (camera, "creating elems");
-
- /* Create "src" elements */
- if (!camerabin_create_src_elements (camera)) {
- goto done;
- }
-
- /* Add image bin */
- camera->pad_src_img =
- gst_element_get_request_pad (camera->src_out_sel, "src%d");
- if (!gst_camerabin_add_element (GST_BIN (camera), camera->imgbin)) {
- goto done;
- }
- gst_pad_add_buffer_probe (camera->pad_src_img,
- G_CALLBACK (gst_camerabin_have_img_buffer), camera);
-
- /* Create view finder elements, this also links it to image bin */
- if (!camerabin_create_view_elements (camera)) {
- GST_WARNING_OBJECT (camera, "creating view failed");
- goto done;
- }
-
- /* Link output selector ! view_finder */
- camera->pad_src_view =
- gst_element_get_request_pad (camera->src_out_sel, "src%d");
- camera->pad_view_src =
- gst_element_get_request_pad (camera->view_in_sel, "sink%d");
- link_ret = gst_pad_link (camera->pad_src_view, camera->pad_view_src);
- if (GST_PAD_LINK_FAILED (link_ret)) {
- GST_ELEMENT_ERROR (camera, CORE, NEGOTIATION,
- ("linking view finder failed"), (NULL));
- goto done;
- }
-
- /* Set view finder active as default */
- g_object_set (G_OBJECT (camera->src_out_sel), "active-pad",
- camera->pad_src_view, NULL);
-
- /* Add video bin */
- camera->pad_src_vid =
- gst_element_get_request_pad (camera->src_out_sel, "src%d");
- if (!gst_camerabin_add_element (GST_BIN (camera), camera->vidbin)) {
- goto done;
- }
- gst_pad_add_buffer_probe (camera->pad_src_vid,
- G_CALLBACK (gst_camerabin_have_vid_buffer), camera);
-
- /* Link video bin ! view finder */
- // unconnected_pad = gst_bin_find_unlinked_pad (GST_BIN (camera), GST_PAD_SRC);
- unconnected_pad = gst_bin_find_unconnected_pad (GST_BIN (camera), GST_PAD_SRC);
- camera->pad_view_vid =
- gst_element_get_request_pad (camera->view_in_sel, "sink%d");
- link_ret = gst_pad_link (unconnected_pad, camera->pad_view_vid);
- gst_object_unref (unconnected_pad);
- if (GST_PAD_LINK_FAILED (link_ret)) {
- GST_ELEMENT_ERROR (camera, CORE, NEGOTIATION, (NULL),
- ("linking video bin and view finder failed"));
- goto done;
- }
-
- ret = TRUE;
-
-done:
-
- if (FALSE == ret)
- camerabin_destroy_elements (camera);
-
- return ret;
-}
-
-/*
- * camerabin_destroy_elements:
- * @camera: camerabin object
- *
- * This function removes all elements from camerabin.
- */
-static void
-camerabin_destroy_elements (GstCameraBin * camera)
-{
- GST_DEBUG_OBJECT (camera, "destroying elements");
-
- /* Release request pads */
- if (camera->pad_view_vid) {
- gst_element_release_request_pad (camera->view_in_sel, camera->pad_view_vid);
- camera->pad_view_vid = NULL;
- }
- if (camera->pad_src_vid) {
- gst_element_release_request_pad (camera->src_out_sel, camera->pad_src_vid);
- camera->pad_src_vid = NULL;
- }
- if (camera->pad_view_img) {
- gst_element_release_request_pad (camera->view_in_sel, camera->pad_view_img);
- camera->pad_view_img = NULL;
- }
- if (camera->pad_src_img) {
- gst_element_release_request_pad (camera->src_out_sel, camera->pad_src_img);
- camera->pad_src_img = NULL;
- }
- if (camera->pad_view_src) {
- gst_element_release_request_pad (camera->view_in_sel, camera->pad_view_src);
- camera->pad_view_src = NULL;
- }
- if (camera->pad_src_view) {
- gst_element_release_request_pad (camera->src_out_sel, camera->pad_src_view);
- camera->pad_src_view = NULL;
- }
-
- camera->view_sink = NULL;
- camera->view_scale = NULL;
- camera->view_in_sel = NULL;
-
- camera->src_out_sel = NULL;
- camera->src_filter = NULL;
- camera->src_zoom_crop = NULL;
- camera->src_zoom_scale = NULL;
- camera->src_zoom_filter = NULL;
- camera->src_vid_src = NULL;
-
- camera->active_bin = NULL;
-
- /* Remove elements */
- gst_camerabin_remove_elements_from_bin (GST_BIN (camera));
-}
-
-/*
- * camerabin_dispose_elements:
- * @camera: camerabin object
- *
- * This function releases all allocated camerabin resources.
- */
-static void
-camerabin_dispose_elements (GstCameraBin * camera)
-{
- if (camera->capture_mutex) {
- g_mutex_free (camera->capture_mutex);
- camera->capture_mutex = NULL;
- }
- if (camera->cond) {
- g_cond_free (camera->cond);
- camera->cond = NULL;
- }
- if (camera->filename) {
- g_string_free (camera->filename, TRUE);
- camera->filename = NULL;
- }
- /* Unref user set elements */
- if (camera->user_vf_sink) {
- gst_object_unref (camera->user_vf_sink);
- camera->user_vf_sink = NULL;
- }
- if (camera->user_vid_src) {
- gst_object_unref (camera->user_vid_src);
- camera->user_vid_src = NULL;
- }
-
- if (camera->image_capture_caps) {
- gst_caps_unref (camera->image_capture_caps);
- camera->image_capture_caps = NULL;
- }
-
- if (camera->view_finder_caps) {
- gst_caps_unref (camera->view_finder_caps);
- camera->view_finder_caps = NULL;
- }
-
- if (camera->allowed_caps) {
- gst_caps_unref (camera->allowed_caps);
- camera->allowed_caps = NULL;
- }
-}
-
-/*
- * gst_camerabin_image_capture_continue:
- * @camera: camerabin object
- * @filename: new filename set by user
- * @cont: TRUE to continue image capture, FALSE otherwise
- *
- * Check if user wants to continue image capturing by using g_signal.
- */
-static void
-gst_camerabin_image_capture_continue (GstCameraBin * camera, GString * filename,
- gboolean * cont)
-{
- GST_DEBUG_OBJECT (camera, "emitting img_done signal, filename: %s",
- filename->str);
- g_signal_emit (G_OBJECT (camera), camerabin_signals[IMG_DONE_SIGNAL], 0,
- filename, cont);
-
- GST_DEBUG_OBJECT (camera, "emitted img_done, new filename:%s, continue:%d",
- filename->str, *cont);
-}
-
-/*
- * gst_camerabin_change_mode:
- * @camera: camerabin object
- * @mode: image or video mode
- *
- * Change camerabin mode between image and video capture.
- * Changing mode will stop ongoing capture.
- */
-static void
-gst_camerabin_change_mode (GstCameraBin * camera, gint mode)
-{
- if (camera->mode != mode || !camera->active_bin) {
- GST_DEBUG_OBJECT (camera, "setting mode: %d", mode);
- /* Interrupt ongoing capture */
- gst_camerabin_do_stop (camera);
- camera->mode = mode;
- if (camera->active_bin) {
- gst_element_set_state (camera->active_bin, GST_STATE_NULL);
- }
- if (camera->mode == MODE_IMAGE) {
- camera->active_bin = camera->imgbin;
- } else if (camera->mode == MODE_VIDEO) {
- camera->active_bin = camera->vidbin;
- }
- gst_camerabin_reset_to_view_finder (camera);
- }
-}
-
-/*
- * gst_camerabin_change_filename:
- * @camera: camerabin object
- * @name: new filename for capture
- *
- * Change filename for image or video capture.
- * Changing filename will stop ongoing capture.
- */
-static void
-gst_camerabin_change_filename (GstCameraBin * camera, const gchar * name)
-{
- if (0 != strcmp (camera->filename->str, name)) {
- GST_DEBUG_OBJECT (camera, "changing filename from %s to %s",
- camera->filename->str, name);
- /* Interrupt ongoing capture */
- gst_camerabin_do_stop (camera);
- gst_camerabin_reset_to_view_finder (camera);
-
- if (camera->active_bin) {
- g_object_set (G_OBJECT (camera->active_bin), "filename", name, NULL);
- }
-
- g_string_assign (camera->filename, name);
- }
-}
-
-/*
- * gst_camerabin_setup_zoom:
- * @camera: camerabin object
- *
- * Apply zoom configured to camerabin to capture.
- */
-static void
-gst_camerabin_setup_zoom (GstCameraBin * camera)
-{
- gint zoom;
- gboolean done = FALSE;
-
- g_return_if_fail (camera != NULL);
- g_return_if_fail (camera->src_zoom_crop != NULL);
-
- zoom = g_atomic_int_get (&camera->zoom);
-
- g_return_if_fail (zoom);
-
- if (GST_IS_ELEMENT (camera->src_vid_src) &&
- gst_element_implements_interface (camera->src_vid_src,
- GST_TYPE_PHOTOGRAPHY)) {
- /* Try setting (hardware) zoom using photography interface */
- GstPhotography *photo;
- GstPhotoCaps pcaps;
-
- photo = GST_PHOTOGRAPHY (camera->src_vid_src);
- pcaps = gst_photography_get_capabilities (photo);
-
- if (pcaps & GST_PHOTOGRAPHY_CAPS_ZOOM) {
- done = gst_photography_set_zoom (photo, (gfloat) zoom / 100.0);
- }
- }
-
- if (!done) {
- /* Update capsfilters to apply the (software) zoom */
- gint w2_crop = 0;
- gint h2_crop = 0;
- GstPad *pad_zoom_sink = NULL;
-
- GST_INFO_OBJECT (camera, "zoom: %d, orig size: %dx%d", zoom,
- camera->width, camera->height);
-
- if (zoom != ZOOM_1X) {
- w2_crop = (camera->width - (camera->width * ZOOM_1X / zoom)) / 2;
- h2_crop = (camera->height - (camera->height * ZOOM_1X / zoom)) / 2;
- }
-
- pad_zoom_sink = gst_element_get_static_pad (camera->src_zoom_crop, "sink");
-
- GST_INFO_OBJECT (camera,
- "sw cropping: left:%d, right:%d, top:%d, bottom:%d", w2_crop, w2_crop,
- h2_crop, h2_crop);
-
- GST_PAD_STREAM_LOCK (pad_zoom_sink);
- g_object_set (camera->src_zoom_crop, "left", w2_crop, "right", w2_crop,
- "top", h2_crop, "bottom", h2_crop, NULL);
-
- GST_PAD_STREAM_UNLOCK (pad_zoom_sink);
- gst_object_unref (pad_zoom_sink);
- }
- GST_LOG_OBJECT (camera, "zoom set");
-}
-
-/*
- * gst_camerabin_get_allowed_input_caps:
- * @camera: camerabin object
- *
- * Retrieve caps from videosrc describing formats it supports
- *
- * Returns: caps object from videosrc
- */
-static GstCaps *
-gst_camerabin_get_allowed_input_caps (GstCameraBin * camera)
-{
- GstCaps *caps = NULL;
- GstPad *pad = NULL, *peer_pad = NULL;
- GstState state;
- gboolean temp_videosrc_pause = FALSE;
- GstElement *videosrc;
-
- g_return_val_if_fail (camera != NULL, NULL);
-
- videosrc = camera->src_vid_src ? camera->src_vid_src : camera->user_vid_src;
-
- if (!videosrc) {
- GST_WARNING_OBJECT (camera, "no videosrc, can't get allowed caps");
- goto failed;
- }
-
- if (camera->allowed_caps) {
- GST_DEBUG_OBJECT (camera, "returning cached caps");
- goto done;
- }
-
- pad = gst_element_get_static_pad (videosrc, "src");
-
- if (!pad) {
- GST_WARNING_OBJECT (camera, "no srcpad in videosrc");
- goto failed;
- }
-
- state = GST_STATE (videosrc);
-
- /* Make this function work also in READY and NULL state */
- if (state == GST_STATE_READY || state == GST_STATE_NULL) {
- GST_DEBUG_OBJECT (camera, "setting videosrc to paused temporarily");
- temp_videosrc_pause = TRUE;
- peer_pad = gst_pad_get_peer (pad);
- if (peer_pad) {
- gst_pad_unlink (pad, peer_pad);
- }
- /* Set videosrc to PAUSED to open video device */
- gst_element_set_locked_state (videosrc, TRUE);
- gst_element_set_state (videosrc, GST_STATE_PAUSED);
- }
-
- camera->allowed_caps = gst_pad_get_caps (pad);
-
- /* Restore state and re-link if necessary */
- if (temp_videosrc_pause) {
- GST_DEBUG_OBJECT (camera, "restoring videosrc state %d", state);
- /* Reset videosrc to NULL state, some drivers seem to need this */
- gst_element_set_state (videosrc, GST_STATE_NULL);
- gst_element_set_state (videosrc, state);
- if (peer_pad) {
- gst_pad_link (pad, peer_pad);
- gst_object_unref (peer_pad);
- }
- gst_element_set_locked_state (videosrc, FALSE);
- }
-
- gst_object_unref (pad);
-
-done:
- if (camera->allowed_caps) {
- caps = gst_caps_copy (camera->allowed_caps);
- }
-failed:
- GST_INFO_OBJECT (camera, "allowed caps:%" GST_PTR_FORMAT, caps);
- return caps;
-}
-
-/*
- * gst_camerabin_rewrite_tags_to_bin:
- * @bin: bin holding tag setter elements
- * @list: tag list to be written
- *
- * This function looks for certain tag setters from given bin
- * and REPLACES ALL setter tags with given tag list
- *
- */
-static void
-gst_camerabin_rewrite_tags_to_bin (GstBin * bin, const GstTagList * list)
-{
- GstElement *setter;
- GstElementFactory *setter_factory;
- const gchar *klass;
- GstIterator *iter;
- GstIteratorResult res = GST_ITERATOR_OK;
- gpointer data;
-
- iter = gst_bin_iterate_all_by_interface (bin, GST_TYPE_TAG_SETTER);
-
- while (res == GST_ITERATOR_OK || res == GST_ITERATOR_RESYNC) {
- res = gst_iterator_next (iter, &data);
- switch (res) {
- case GST_ITERATOR_DONE:
- break;
- case GST_ITERATOR_RESYNC:
- gst_iterator_resync (iter);
- break;
- case GST_ITERATOR_ERROR:
- GST_WARNING ("error iterating tag setters");
- break;
- case GST_ITERATOR_OK:
- setter = GST_ELEMENT (data);
- GST_LOG ("iterating tag setters: %" GST_PTR_FORMAT, setter);
- setter_factory = gst_element_get_factory (setter);
- klass = gst_element_factory_get_klass (setter_factory);
- /* FIXME: check if tags should be written to all tag setters,
- set tags only to Muxer elements for now */
- if (g_strrstr (klass, "Muxer")) {
- GST_DEBUG ("replacement tags %" GST_PTR_FORMAT, list);
- gst_tag_setter_merge_tags (GST_TAG_SETTER (setter), list,
- GST_TAG_MERGE_REPLACE_ALL);
- }
- gst_object_unref (setter);
- break;
- default:
- break;
- }
- }
-
- gst_iterator_free (iter);
-}
-
-/*
- * gst_camerabin_get_internal_tags:
- * @camera: the camera bin element
- *
- * Returns tag list containing metadata from camerabin
- * and it's elements
- */
-static GstTagList *
-gst_camerabin_get_internal_tags (GstCameraBin * camera)
-{
- GstTagList *list = gst_tag_list_new ();
- GstColorBalance *balance = NULL;
- const GList *controls = NULL, *item;
- GstColorBalanceChannel *channel;
- gint min_value, max_value, mid_value, cur_value;
-
-
- if (camera->active_bin == camera->vidbin) {
- /* FIXME: check if internal video tag setting is needed */
- goto done;
- }
-
- gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
- "image-width", camera->width, "image-height", camera->height, NULL);
-
- gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
- "capture-digital-zoom", camera->zoom, 100, NULL);
-
- if (gst_element_implements_interface (GST_ELEMENT (camera),
- GST_TYPE_COLOR_BALANCE)) {
- balance = GST_COLOR_BALANCE (camera);
- }
-
- if (balance) {
- controls = gst_color_balance_list_channels (balance);
- }
- for (item = controls; item; item = g_list_next (item)) {
- channel = item->data;
- min_value = channel->min_value;
- max_value = channel->max_value;
- /* the default value would probably better */
- mid_value = min_value + ((max_value - min_value) / 2);
- cur_value = gst_color_balance_get_value (balance, channel);
-
- if (!strcasecmp (channel->label, "brightness")) {
- /* The value of brightness. The unit is the APEX value (Additive System of Photographic Exposure).
- * Ordinarily it is given in the range of -99.99 to 99.99. Note that
- * if the numerator of the recorded value is 0xFFFFFFFF, Unknown shall be indicated.
- *
- * BrightnessValue (Bv) = log2 ( B/NK )
- * Note that: B:cd/cm² (candela per square centimeter), N,K: constant
- *
- * http://johnlind.tripod.com/science/scienceexposure.html
- *
- */
- gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
- "capture-brightness", cur_value, 1, NULL);
- } else if (!strcasecmp (channel->label, "contrast")) {
- /* 0 = Normal, 1 = Soft, 2 = Hard */
-
- gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
- "capture-contrast",
- (cur_value == mid_value) ? 0 : ((cur_value < mid_value) ? 1 : 2),
- NULL);
- } else if (!strcasecmp (channel->label, "gain")) {
- /* 0 = Normal, 1 = Low Up, 2 = High Up, 3 = Low Down, 4 = Hight Down */
- gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
- "capture-gain",
- (guint) (cur_value == mid_value) ? 0 : ((cur_value <
- mid_value) ? 1 : 3), NULL);
- } else if (!strcasecmp (channel->label, "saturation")) {
- /* 0 = Normal, 1 = Low, 2 = High */
- gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
- "capture-saturation",
- (cur_value == mid_value) ? 0 : ((cur_value < mid_value) ? 1 : 2),
- NULL);
- }
- }
-
-done:
-
- return list;
-}
-
-/*
- * gst_camerabin_rewrite_tags:
- * @camera: the camera bin element
- *
- * Merges application set tags to camerabin internal tags,
- * and writes them using image or video bin tag setters.
- */
-static void
-gst_camerabin_rewrite_tags (GstCameraBin * camera)
-{
- const GstTagList *app_tag_list = NULL;
- GstTagList *list = NULL;
-
- /* Get application set tags */
- app_tag_list = gst_tag_setter_get_tag_list (GST_TAG_SETTER (camera));
-
- /* Get tags from camerabin and it's elements */
- list = gst_camerabin_get_internal_tags (camera);
-
- if (app_tag_list) {
- gst_tag_list_insert (list, app_tag_list, GST_TAG_MERGE_REPLACE);
- }
-
- /* Write tags */
- gst_camerabin_rewrite_tags_to_bin (GST_BIN (camera->active_bin), list);
-
- gst_tag_list_free (list);
-}
-
-/*
- * gst_camerabin_set_capsfilter_caps:
- * @camera: camerabin object
- * @new_caps: pointer to caps object to set
- *
- * Set given caps to camerabin capsfilters.
- */
-static void
-gst_camerabin_set_capsfilter_caps (GstCameraBin * camera, GstCaps * new_caps)
-{
- GstStructure *st;
-
- GST_INFO_OBJECT (camera, "new_caps:%" GST_PTR_FORMAT, new_caps);
-
- st = gst_caps_get_structure (new_caps, 0);
-
- gst_structure_get_int (st, "width", &camera->width);
- gst_structure_get_int (st, "height", &camera->height);
-
- if (gst_structure_has_field (st, "framerate")) {
- gst_structure_get_fraction (st, "framerate", &camera->fps_n,
- &camera->fps_d);
- }
-
- /* Update zoom */
- gst_camerabin_setup_zoom (camera);
-
- /* Update capsfilters */
- g_object_set (G_OBJECT (camera->src_filter), "caps", new_caps, NULL);
- g_object_set (G_OBJECT (camera->src_zoom_filter), "caps", new_caps, NULL);
-}
-
-/*
- * img_capture_prepared:
- * @data: camerabin object
- *
- * Callback which is called after image capture has been prepared.
- */
-static void
-img_capture_prepared (gpointer data)
-{
- GstCameraBin *camera = GST_CAMERABIN (data);
-
- GST_INFO_OBJECT (camera, "image capture prepared");
-
- if (camera->image_capture_caps) {
- /* Set capsfilters to match arriving image data */
- gst_camerabin_set_capsfilter_caps (camera, camera->image_capture_caps);
- }
-
- g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", FALSE,
- "active-pad", camera->pad_src_img, NULL);
- gst_camerabin_rewrite_tags (camera);
- gst_element_set_state (GST_ELEMENT (camera->imgbin), GST_STATE_PLAYING);
-}
-
-/*
- * gst_camerabin_start_image_capture:
- * @camera: camerabin object
- *
- * Initiates image capture.
- */
-static void
-gst_camerabin_start_image_capture (GstCameraBin * camera)
-{
- GstStateChangeReturn state_ret;
- gboolean wait_for_prepare = FALSE;
- gint width = 0, height = 0, fps_n = 0, fps_d = 0;
- GstStructure *st;
-
- GST_INFO_OBJECT (camera, "starting image capture");
-
- if (GST_IS_ELEMENT (camera->src_vid_src) &&
- gst_element_implements_interface (camera->src_vid_src,
- GST_TYPE_PHOTOGRAPHY)) {
- /* Start image capture preparations using photography iface */
- wait_for_prepare = TRUE;
- g_mutex_lock (camera->capture_mutex);
- if (camera->image_capture_caps) {
- st = gst_caps_get_structure (camera->image_capture_caps, 0);
- } else {
- st = gst_caps_get_structure (camera->view_finder_caps, 0);
- }
- gst_structure_get_int (st, "width", &width);
- gst_structure_get_int (st, "height", &height);
- gst_structure_get_fraction (st, "framerate", &fps_n, &fps_d);
- /* Set image capture resolution and frame rate */
- g_signal_emit_by_name (camera->src_vid_src, "user-res-fps",
- width, height, fps_n, fps_d, 0);
-
- /* Enable still image capture mode in v4l2camsrc */
- if (g_object_class_find_property (G_OBJECT_GET_CLASS (camera->src_vid_src),
- "capture-mode")) {
- g_object_set (G_OBJECT (camera->src_vid_src), "capture-mode", 1, NULL);
- }
-
- /* Start preparations for image capture */
- gst_photography_prepare_for_capture (GST_PHOTOGRAPHY (camera->src_vid_src),
- (GstPhotoCapturePrepared) img_capture_prepared, camera);
- camera->capturing = TRUE;
- g_mutex_unlock (camera->capture_mutex);
- }
-
- if (!wait_for_prepare) {
- gst_camerabin_rewrite_tags (camera);
- state_ret = gst_element_set_state (camera->imgbin, GST_STATE_PLAYING);
- if (state_ret != GST_STATE_CHANGE_FAILURE) {
- g_mutex_lock (camera->capture_mutex);
- g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", TRUE,
- "active-pad", camera->pad_src_img, NULL);
- camera->capturing = TRUE;
- g_mutex_unlock (camera->capture_mutex);
- } else {
- GST_WARNING_OBJECT (camera, "imagebin state change failed");
- gst_element_set_state (camera->imgbin, GST_STATE_NULL);
- }
- }
-}
-
-/*
- * gst_camerabin_start_video_recording:
- * @camera: camerabin object
- *
- * Initiates video recording.
- */
-static void
-gst_camerabin_start_video_recording (GstCameraBin * camera)
-{
- GstStateChangeReturn state_ret;
- /* FIXME: how to ensure resolution and fps is supported by CPU?
- * use a queue overrun signal?
- */
- GST_INFO_OBJECT (camera, "starting video capture");
-
- gst_camerabin_rewrite_tags (camera);
-
- /* Pause the pipeline in order to distribute new clock in paused_to_playing */
- /* audio src timestamps will be 0 without state change to READY. ??? */
- gst_element_set_state (GST_ELEMENT (camera), GST_STATE_READY);
- gst_element_set_locked_state (camera->vidbin, FALSE);
- state_ret = gst_element_set_state (GST_ELEMENT (camera), GST_STATE_PAUSED);
-
- if (state_ret != GST_STATE_CHANGE_FAILURE) {
- g_mutex_lock (camera->capture_mutex);
- g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", FALSE,
- "active-pad", camera->pad_src_vid, NULL);
-
- /* Enable video mode in v4l2camsrc */
- if (g_object_class_find_property (G_OBJECT_GET_CLASS (camera->src_vid_src),
- "capture-mode")) {
- g_object_set (G_OBJECT (camera->src_vid_src), "capture-mode", 2, NULL);
- }
-
- gst_element_set_state (GST_ELEMENT (camera), GST_STATE_PLAYING);
- gst_element_set_locked_state (camera->vidbin, TRUE);
- camera->capturing = TRUE;
- g_mutex_unlock (camera->capture_mutex);
- } else {
- GST_WARNING_OBJECT (camera, "videobin state change failed");
- gst_element_set_state (camera->vidbin, GST_STATE_NULL);
- gst_camerabin_reset_to_view_finder (camera);
- }
-}
-
-/*
- * gst_camerabin_send_video_eos:
- * @camera: camerabin object
- *
- * Generate and send eos event to video bin in order to
- * finish recording properly.
- */
-static void
-gst_camerabin_send_video_eos (GstCameraBin * camera)
-{
- GstPad *videopad;
-
- g_return_if_fail (camera != NULL);
-
- /* Send eos event to video bin */
- GST_INFO_OBJECT (camera, "sending eos to videobin");
- videopad = gst_element_get_static_pad (camera->vidbin, "sink");
- gst_pad_send_event (videopad, gst_event_new_eos ());
- gst_object_unref (videopad);
-}
-
-/*
- * image_pad_blocked:
- * @pad: pad to block/unblock
- * @blocked: TRUE to block, FALSE to unblock
- * @u_data: camera bin object
- *
- * Sends eos event to image bin if blocking pad leading to image bin.
- * The pad will be unblocked when image bin posts eos message.
- */
-static void
-image_pad_blocked (GstPad * pad, gboolean blocked, gpointer user_data)
-{
- GstCameraBin *camera;
-
- camera = (GstCameraBin *) user_data;
-
- GST_DEBUG_OBJECT (camera, "%s %s:%s",
- blocked ? "blocking" : "unblocking", GST_DEBUG_PAD_NAME (pad));
-
- if (blocked && (pad == camera->pad_src_img)) {
- /* Send eos and block until image bin reaches eos */
- GST_DEBUG_OBJECT (camera, "sending eos to image bin");
- gst_element_send_event (camera->imgbin, gst_event_new_eos ());
- }
-}
-
-/*
- * gst_camerabin_have_img_buffer:
- * @pad: output-selector src pad leading to image bin
- * @buffer: still image frame
- * @u_data: camera bin object
- *
- * Buffer probe called before sending each buffer to image bin.
- *
- * First buffer is always passed directly to image bin. Then pad
- * is blocked in order to interleave buffers with eos events.
- * Interleaving eos events and buffers is needed when we have
- * decoupled elements in the image bin capture pipeline.
- * After image bin posts eos message, then pad is unblocked.
- * Next, image bin is changed to READY state in order to save the
- * file and the application is allowed to decide whether to
- * continue image capture. If yes, only then the next buffer is
- * passed to image bin.
- */
-static gboolean
-gst_camerabin_have_img_buffer (GstPad * pad, GstBuffer * buffer,
- gpointer u_data)
-{
- GstCameraBin *camera = (GstCameraBin *) u_data;
- gboolean ret = TRUE;
-
- GST_LOG ("got buffer #%d %p with size %d", camera->num_img_buffers,
- buffer, GST_BUFFER_SIZE (buffer));
-
- /* Image filename should be set by now */
- if (g_str_equal (camera->filename->str, "")) {
- GST_DEBUG_OBJECT (camera, "filename not set, dropping buffer");
- ret = FALSE;
- goto done;
- }
-
- /* Check for first buffer after capture start, we want to
- pass it forward directly. */
- if (!camera->num_img_buffers) {
- /* Restore filter caps for view finder mode if necessary.
- The v4l2camsrc switches automatically to view finder
- resolution after hi-res still image capture. */
- if (camera->image_capture_caps) {
- gst_camerabin_set_capsfilter_caps (camera, camera->view_finder_caps);
- }
- goto done;
- }
-
- /* Close the file of saved image */
- gst_element_set_state (camera->imgbin, GST_STATE_READY);
-
- /* Check if the application wants to continue */
- gst_camerabin_image_capture_continue (camera, camera->filename, &ret);
-
- if (ret && !camera->stop_requested) {
- GST_DEBUG_OBJECT (camera, "capturing image \"%s\"", camera->filename->str);
- g_object_set (G_OBJECT (camera->imgbin), "filename",
- camera->filename->str, NULL);
- gst_element_set_state (camera->imgbin, GST_STATE_PLAYING);
- } else {
- GST_DEBUG_OBJECT (camera, "not continuing (cont:%d, stop_req:%d)",
- ret, camera->stop_requested);
- /* Reset filename to force application set new filename */
- g_string_assign (camera->filename, "");
-
- /* Block dataflow to the output-selector to show preview image in
- view finder. Continue and unblock when capture is stopped */
- gst_pad_set_blocked_async (camera->srcpad_zoom_filter, TRUE,
- (GstPadBlockCallback) image_pad_blocked, camera);
- ret = FALSE; /* Drop the buffer */
-
- g_mutex_lock (camera->capture_mutex);
- camera->capturing = FALSE;
- g_cond_signal (camera->cond);
- g_mutex_unlock (camera->capture_mutex);
- }
-
-done:
-
- if (ret) {
- camera->num_img_buffers++;
- /* Block when next buffer arrives, we want to push eos event
- between frames and make sure that eos reaches the filesink
- before processing the next buffer. */
- gst_pad_set_blocked_async (pad, TRUE,
- (GstPadBlockCallback) image_pad_blocked, camera);
- }
-
- return ret;
-}
-
-/*
- * gst_camerabin_have_vid_buffer:
- * @pad: output-selector src pad leading to video bin
- * @buffer: buffer pushed to the pad
- * @u_data: camerabin object
- *
- * Buffer probe for src pad leading to video bin.
- * Sends eos event to video bin if stop requested and drops
- * all buffers after this.
- */
-static gboolean
-gst_camerabin_have_vid_buffer (GstPad * pad, GstBuffer * buffer,
- gpointer u_data)
-{
- GstCameraBin *camera = (GstCameraBin *) u_data;
- gboolean ret = TRUE;
- GST_LOG ("got video buffer %p with size %d",
- buffer, GST_BUFFER_SIZE (buffer));
- if (camera->stop_requested) {
- gst_camerabin_send_video_eos (camera);
- ret = FALSE; /* Drop buffer */
- }
-
- return ret;
-}
-
-/*
- * gst_camerabin_reset_to_view_finder:
- * @camera: camerabin object
- *
- * Stop capturing and set camerabin to view finder mode.
- * Reset capture counters and flags.
- */
-static void
-gst_camerabin_reset_to_view_finder (GstCameraBin * camera)
-{
- GstStateChangeReturn state_ret;
- GST_DEBUG_OBJECT (camera, "resetting");
-
- /* Set active bin to READY state */
- if (camera->active_bin) {
- state_ret = gst_element_set_state (camera->active_bin, GST_STATE_READY);
- if (state_ret == GST_STATE_CHANGE_FAILURE) {
- GST_WARNING_OBJECT (camera, "state change failed");
- gst_element_set_state (camera->active_bin, GST_STATE_NULL);
- camera->active_bin = NULL;
- }
- }
-
- /* Reset counters and flags */
- camera->num_img_buffers = 0;
- camera->stop_requested = FALSE;
- camera->paused = FALSE;
-
- if (camera->src_out_sel) {
- /* Set selector to forward data to view finder */
- g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", FALSE,
- "active-pad", camera->pad_src_view, NULL);
- }
-
- /* Unblock, if dataflow to output-selector is blocked due to image preview */
- if (camera->srcpad_zoom_filter &&
- gst_pad_is_blocked (camera->srcpad_zoom_filter)) {
- gst_pad_set_blocked_async (camera->srcpad_zoom_filter, FALSE,
- (GstPadBlockCallback) image_pad_blocked, camera);
- }
- /* Unblock, if dataflow to image bin is blocked due to waiting for eos */
- if (camera->pad_src_img && gst_pad_is_blocked (camera->pad_src_img)) {
- gst_pad_set_blocked_async (camera->pad_src_img, FALSE,
- (GstPadBlockCallback) image_pad_blocked, camera);
- }
-
- /* Enable view finder mode in v4l2camsrc */
- if (camera->src_vid_src &&
- g_object_class_find_property (G_OBJECT_GET_CLASS (camera->src_vid_src),
- "capture-mode")) {
- g_object_set (G_OBJECT (camera->src_vid_src), "capture-mode", 0, NULL);
- }
-
- GST_DEBUG_OBJECT (camera, "reset done");
-}
-
-/*
- * gst_camerabin_do_stop:
- * @camera: camerabin object
- *
- * Raise flag to indicate to image and video bin capture stop.
- * Stopping paused video recording handled as a special case.
- * Wait for ongoing capturing to finish.
- */
-static void
-gst_camerabin_do_stop (GstCameraBin * camera)
-{
- g_mutex_lock (camera->capture_mutex);
- if (camera->capturing) {
- GST_DEBUG_OBJECT (camera, "mark stop");
- camera->stop_requested = TRUE;
-
- /* Take special care when stopping paused video capture */
- if ((camera->active_bin == camera->vidbin) && camera->paused) {
- /* Send eos event to video bin before setting it to playing */
- gst_camerabin_send_video_eos (camera);
- /* We must change to playing now in order to get video bin eos events
- and buffered data through and finish recording properly */
- gst_element_set_state (GST_ELEMENT (camera->vidbin), GST_STATE_PLAYING);
- camera->paused = FALSE;
- }
-
- GST_DEBUG_OBJECT (camera, "waiting for capturing to finish");
- g_cond_wait (camera->cond, camera->capture_mutex);
- GST_DEBUG_OBJECT (camera, "capturing finished");
- }
- g_mutex_unlock (camera->capture_mutex);
-}
-
-/*
- * gst_camerabin_default_signal_img_done:
- * @camera: camerabin object
- * @fname: new filename
- *
- * Default handler for #GstCameraBin::img-done signal,
- * stops always capture.
- *
- * Returns: FALSE always
- */
-static gboolean
-gst_camerabin_default_signal_img_done (GstCameraBin * camera, GString * fname)
-{
- return FALSE;
-}
-
-/*
- * gst_camerabin_set_allowed_framerate:
- * @camera: camerabin object
- * @filter_caps: update allowed framerate to these caps
- *
- * Find allowed frame rate from video source that matches with
- * resolution in @filter_caps. Set found frame rate to @filter_caps.
- */
-static void
-gst_camerabin_set_allowed_framerate (GstCameraBin * camera,
- GstCaps * filter_caps)
-{
- GstStructure *structure;
- GstCaps *allowed_caps = NULL, *intersect = NULL;
- const GValue *framerate = NULL;
- guint caps_size, i;
-
- /* Get supported caps from video src that matches with new filter caps */
- GST_INFO_OBJECT (camera, "filter caps:%" GST_PTR_FORMAT, filter_caps);
- allowed_caps = gst_camerabin_get_allowed_input_caps (camera);
- intersect = gst_caps_intersect (allowed_caps, filter_caps);
- GST_INFO_OBJECT (camera, "intersect caps:%" GST_PTR_FORMAT, intersect);
-
- /* Find the best framerate from the caps */
- caps_size = gst_caps_get_size (intersect);
- for (i = 0; i < caps_size; i++) {
- structure = gst_caps_get_structure (intersect, i);
- framerate =
- gst_camerabin_find_better_framerate (camera, structure, framerate);
- }
-
- if (GST_VALUE_HOLDS_FRACTION (framerate)) {
- gst_caps_set_simple (filter_caps,
- "framerate", GST_TYPE_FRACTION,
- gst_value_get_fraction_numerator (framerate),
- gst_value_get_fraction_denominator (framerate), NULL);
- }
-
- if (allowed_caps) {
- gst_caps_unref (allowed_caps);
- }
- if (intersect) {
- gst_caps_unref (intersect);
- }
-}
-
-
-/**
- * get_srcpad_current_format:
- * @element: element to get the format from
- *
- * Helper function to get the negotiated fourcc
- * format from @element src pad.
- *
- * Returns: negotiated format (fourcc), 0 if not found
- */
-static guint32
-get_srcpad_current_format (GstElement * element)
-{
- GstPad *srcpad = NULL;
- GstCaps *srccaps = NULL;
- GstStructure *structure;
- guint32 format = 0;
-
- g_return_val_if_fail (element != NULL, 0);
-
- if ((srcpad = gst_element_get_static_pad (element, "src")) == NULL) {
- goto no_pad;
- }
-
- if ((srccaps = gst_pad_get_negotiated_caps (srcpad)) == NULL) {
- goto no_caps;
- }
-
- GST_LOG ("negotiated caps %" GST_PTR_FORMAT, srccaps);
-
- structure = gst_caps_get_structure (srccaps, 0);
- if (gst_structure_has_field (structure, "format")) {
- gst_structure_get_fourcc (structure, "format", &format);
- }
-
- gst_caps_unref (srccaps);
-no_caps:
- gst_object_unref (srcpad);
-no_pad:
- GST_DEBUG ("current format for %" GST_PTR_FORMAT ": %" GST_FOURCC_FORMAT,
- element, GST_FOURCC_ARGS (format));
- return format;
-}
-
-/*
- * gst_camerabin_find_better_framerate:
- * @camera: camerabin object
- * @st: structure that contains framerate candidates
- * @orig_framerate: best framerate so far
- *
- * Looks for framerate better than @orig_framerate from @st structure.
- * In night mode lowest framerate is considered best, otherwise highest is
- * best.
- *
- * Returns: @orig_framerate or better if found
- */
-static const GValue *
-gst_camerabin_find_better_framerate (GstCameraBin * camera, GstStructure * st,
- const GValue * orig_framerate)
-{
- const GValue *framerate = NULL;
- guint i, i_best, list_size;
- gint res, comparison;
-
- if (camera->night_mode) {
- GST_LOG_OBJECT (camera, "finding min framerate");
- comparison = GST_VALUE_LESS_THAN;
- } else {
- GST_LOG_OBJECT (camera, "finding max framerate");
- comparison = GST_VALUE_GREATER_THAN;
- }
-
- if (gst_structure_has_field (st, "framerate")) {
- framerate = gst_structure_get_value (st, "framerate");
- /* Handle framerate lists */
- if (GST_VALUE_HOLDS_LIST (framerate)) {
- list_size = gst_value_list_get_size (framerate);
- GST_LOG_OBJECT (camera, "finding framerate from list");
- for (i = 0, i_best = 0; i < list_size; i++) {
- res = gst_value_compare (gst_value_list_get_value (framerate, i),
- gst_value_list_get_value (framerate, i_best));
- if (comparison == res) {
- i_best = i;
- }
- }
- GST_LOG_OBJECT (camera, "found best framerate from index %d", i_best);
- framerate = gst_value_list_get_value (framerate, i_best);
- }
- /* Handle framerate ranges */
- if (GST_VALUE_HOLDS_FRACTION_RANGE (framerate)) {
- if (camera->night_mode) {
- GST_LOG_OBJECT (camera, "getting min framerate from range");
- framerate = gst_value_get_fraction_range_min (framerate);
- } else {
- GST_LOG_OBJECT (camera, "getting max framerate from range");
- framerate = gst_value_get_fraction_range_max (framerate);
- }
- }
- }
-
- /* Check if we found better framerate */
- if (orig_framerate && framerate) {
- res = gst_value_compare (orig_framerate, framerate);
- if (comparison == res) {
- GST_LOG_OBJECT (camera, "original framerate was the best");
- framerate = orig_framerate;
- }
- }
-
- return framerate;
-}
-
-/*
- * GObject callback functions implementation
- */
-
-static void
-gst_camerabin_base_init (gpointer gclass)
-{
- static GstElementDetails element_details = {
- "Camera Bin",
- "Generic/Bin/Camera",
- "Handle lot of features present in DSC",
- "Nokia Corporation <multimedia@maemo.org>\n"
- "Edgard Lima <edgard.lima@indt.org.br>"
- };
- GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
- gst_element_class_set_details (element_class, &element_details);
-}
-
-static void
-gst_camerabin_class_init (GstCameraBinClass * klass)
-{
- GObjectClass *gobject_class;
- GstElementClass *gstelement_class;
- GstBinClass *gstbin_class;
-
- gobject_class = G_OBJECT_CLASS (klass);
- gstelement_class = GST_ELEMENT_CLASS (klass);
- gstbin_class = GST_BIN_CLASS (klass);
-
- /* gobject */
-
- gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_camerabin_dispose);
- gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_camerabin_finalize);
-
- gobject_class->set_property = gst_camerabin_set_property;
- gobject_class->get_property = gst_camerabin_get_property;
-
- /**
- * GstCameraBin:filename:
- *
- * Set filename for the still image capturing or video capturing.
- */
-
- g_object_class_install_property (gobject_class, ARG_FILENAME,
- g_param_spec_string ("filename", "Filename",
- "Filename of the image or video to save", "", G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:mode:
- *
- * Set the mode of operation: still image capturing or video recording.
- * Setting the mode will create and destroy image bin or video bin elements
- * according to the mode. You can set this property at any time, changing
- * the mode will stop ongoing capture.
- */
-
- g_object_class_install_property (gobject_class, ARG_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));
-
- /**
- * GstCameraBin:mute:
- *
- * Mute audio in video recording mode.
- * Set this property only when #GstCameraBin is in READY, PAUSED or PLAYING.
- */
-
- g_object_class_install_property (gobject_class, ARG_MUTE,
- g_param_spec_boolean ("mute", "Mute",
- "True to mute the recording. False to record with audio",
- ARG_DEFAULT_MUTE, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:zoom:
- *
- * Set up the zoom applied to the frames.
- * Set this property only when #GstCameraBin is in READY, PAUSED or PLAYING.
- */
-
- g_object_class_install_property (gobject_class, ARG_ZOOM,
- g_param_spec_int ("zoom", "Zoom",
- "The zoom. 100 for 1x, 200 for 2x and so on",
- MIN_ZOOM, MAX_ZOOM, DEFAULT_ZOOM, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:imagepp:
- *
- * Set up an element to do image post processing.
- * This property can only be set while #GstCameraBin is in NULL state.
- * The ownership of the element will be taken by #GstCameraBin.
- */
- g_object_class_install_property (gobject_class, ARG_IMAGE_POST,
- g_param_spec_object ("imagepp", "Image post processing element",
- "Image Post-Processing GStreamer element (default is NULL)",
- GST_TYPE_ELEMENT, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:imageenc:
- *
- * Set up an image encoder (for example, jpegenc or pngenc) element.
- * This property can only be set while #GstCameraBin is in NULL state.
- * The ownership of the element will be taken by #GstCameraBin.
- */
-
- g_object_class_install_property (gobject_class, ARG_IMAGE_ENC,
- g_param_spec_object ("imageenc", "Image encoder",
- "Image encoder GStreamer element (default is jpegenc)",
- GST_TYPE_ELEMENT, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:videopp:
- *
- * Set up an element to do video post processing.
- * This property can only be set while #GstCameraBin is in NULL state.
- * The ownership of the element will be taken by #GstCameraBin.
- */
-
- g_object_class_install_property (gobject_class, ARG_VIDEO_POST,
- g_param_spec_object ("videopp", "Video post processing element",
- "Video post processing GStreamer element (default is NULL)",
- GST_TYPE_ELEMENT, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:videoenc:
- *
- * Set up a video encoder element.
- * This property can only be set while #GstCameraBin is in NULL state.
- * The ownership of the element will be taken by #GstCameraBin.
- */
-
- g_object_class_install_property (gobject_class, ARG_VIDEO_ENC,
- g_param_spec_object ("videoenc", "Video encoder",
- "Video encoder GStreamer element (default is theoraenc)",
- GST_TYPE_ELEMENT, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:audioenc:
- *
- * Set up an audio encoder element.
- * This property can only be set while #GstCameraBin is in NULL state.
- * The ownership of the element will be taken by #GstCameraBin.
- */
-
- g_object_class_install_property (gobject_class, ARG_AUDIO_ENC,
- g_param_spec_object ("audioenc", "Audio encoder",
- "Audio encoder GStreamer element (default is vorbisenc)",
- GST_TYPE_ELEMENT, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:videomux:
- *
- * Set up a video muxer element.
- * This property can only be set while #GstCameraBin is in NULL state.
- * The ownership of the element will be taken by #GstCameraBin.
- */
-
- g_object_class_install_property (gobject_class, ARG_VIDEO_MUX,
- g_param_spec_object ("videomux", "Video muxer",
- "Video muxer GStreamer element (default is oggmux)",
- GST_TYPE_ELEMENT, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:vfsink:
- *
- * Set up a sink element to render frames in view finder.
- * By default "autovideosink" will be the sink element.
- * This property can only be set while #GstCameraBin is in NULL state.
- * The ownership of the element will be taken by #GstCameraBin.
- */
-
- g_object_class_install_property (gobject_class, ARG_VF_SINK,
- g_param_spec_object ("vfsink", "View finder sink",
- "View finder sink GStreamer element (default is " DEFAULT_VIEW_SINK
- ")", GST_TYPE_ELEMENT, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:videosrc:
- *
- * Set up a video source element.
- * By default "v4l2src" will be the src element.
- * This property can only be set while #GstCameraBin is in NULL state.
- * The ownership of the element will be taken by #GstCameraBin.
- */
-
- g_object_class_install_property (gobject_class, ARG_VIDEO_SRC,
- g_param_spec_object ("videosrc", "Video source element",
- "Video source GStreamer element (default is " DEFAULT_SRC_VID_SRC ")",
- GST_TYPE_ELEMENT, G_PARAM_READWRITE));
- /**
- * GstCameraBin:audiosrc:
- *
- * Set up an audio source element.
- * By default "pulsesrc" will be the source element.
- * This property can only be set while #GstCameraBin is in NULL state.
- * The ownership of the element will be taken by #GstCameraBin.
- */
-
- g_object_class_install_property (gobject_class, ARG_AUDIO_SRC,
- g_param_spec_object ("audiosrc", "Audio source element",
- "Audio source GStreamer element (default is pulsesrc)",
- GST_TYPE_ELEMENT, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin:inputcaps:
- *
- * The allowed modes of operation of the video source. Have in mind that it
- * doesn't mean #GstCameraBin can operate in all those modes,
- * it depends also on the other elements in the pipeline. Remember to
- * gst_caps_unref after using it.
- */
-
- g_object_class_install_property (gobject_class, ARG_INPUT_CAPS,
- g_param_spec_boxed ("inputcaps", "Input caps",
- "The allowed modes of the video source operation",
- GST_TYPE_CAPS, G_PARAM_READABLE));
-
- /**
- * GstCameraBin:filter-caps:
- *
- * Filter video source element caps using this property.
- * This is an alternative to #GstCamerabin::user-res-fps action
- * signal that allows more fine grained control of video source.
- */
-
- g_object_class_install_property (gobject_class, ARG_FILTER_CAPS,
- g_param_spec_boxed ("filter-caps", "Filter caps",
- "Capsfilter caps used to control video source operation",
- GST_TYPE_CAPS, G_PARAM_READWRITE));
-
- /**
- * GstCameraBin::user-start:
- * @camera: the camera bin element
- *
- * Starts image capture or video recording depending on the Mode.
- * If there is a capture already going on, does nothing.
- * Resumes video recording if it has been paused.
- */
-
- camerabin_signals[USER_START_SIGNAL] =
- g_signal_new ("user-start",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
- G_STRUCT_OFFSET (GstCameraBinClass, user_start),
- NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
-
- /**
- * GstCameraBin::user-stop:
- * @camera: the camera bin element
- *
- * Stops still image preview, continuous image capture and video
- * recording and returns to the view finder mode.
- */
-
- camerabin_signals[USER_STOP_SIGNAL] =
- g_signal_new ("user-stop",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
- G_STRUCT_OFFSET (GstCameraBinClass, user_stop),
- NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
-
- /**
- * GstCameraBin::user-pause:
- * @camera: the camera bin element
- *
- * Pauses video recording or resumes paused video recording.
- * If in image mode or not recording, does nothing.
- */
-
- camerabin_signals[USER_PAUSE_SIGNAL] =
- g_signal_new ("user-pause",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
- G_STRUCT_OFFSET (GstCameraBinClass, user_pause),
- NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
-
- /**
- * GstCameraBin::user-res-fps:
- * @camera: the camera bin element
- * @width: number of horizontal pixels
- * @height: number of vertical pixels
- * @fps_n: frames per second numerator
- * @fps_d: frames per second denominator
- *
- * Changes the frame resolution and frames per second of the video source.
- * The application must be aware of the resolutions supported by the camera.
- * Supported resolutions and frame rates can be get using input-caps property.
- *
- * Setting @fps_n or @fps_d to 0 configures maximum framerate for the
- * given resolution, unless in night mode when minimum is configured.
- */
-
- camerabin_signals[USER_RES_FPS_SIGNAL] =
- g_signal_new ("user-res-fps",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
- G_STRUCT_OFFSET (GstCameraBinClass, user_res_fps),
- NULL, NULL, gst_camerabin_marshal_VOID__INT_INT_INT_INT, G_TYPE_NONE, 4,
- G_TYPE_INT, G_TYPE_INT, G_TYPE_INT, G_TYPE_INT);
-
- /**
- * GstCameraBin::user-image-res:
- * @camera: the camera bin element
- * @width: number of horizontal pixels
- * @height: number of vertical pixels
- *
- * Changes the resolution used for still image capture.
- * Does not affect view finder mode and video recording.
- * Use this action signal in PAUSED or PLAYING state.
- */
-
- camerabin_signals[USER_IMAGE_RES_SIGNAL] =
- g_signal_new ("user-image-res",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
- G_STRUCT_OFFSET (GstCameraBinClass, user_image_res),
- NULL, NULL, gst_camerabin_marshal_VOID__INT_INT, G_TYPE_NONE, 2,
- G_TYPE_INT, G_TYPE_INT);
-
- /**
- * GstCameraBin::img-done:
- * @camera: the camera bin element
- * @filename: the name of the file just saved
- *
- * Signal emited when the file has just been saved. To continue taking
- * pictures just update @filename and return TRUE, otherwise return FALSE.
- *
- * Don't call any #GstCameraBin method from this signal, if you do so there
- * will be a deadlock.
- */
-
- camerabin_signals[IMG_DONE_SIGNAL] =
- g_signal_new ("img-done", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstCameraBinClass, img_done),
- g_signal_accumulator_true_handled, NULL, gst_marshal_BOOLEAN__POINTER,
- G_TYPE_BOOLEAN, 1, G_TYPE_POINTER);
-
- klass->user_start = gst_camerabin_user_start;
- klass->user_stop = gst_camerabin_user_stop;
- klass->user_pause = gst_camerabin_user_pause;
- klass->user_res_fps = gst_camerabin_user_res_fps;
- klass->user_image_res = gst_camerabin_user_image_res;
-
- klass->img_done = gst_camerabin_default_signal_img_done;
-
- /* gstelement */
-
- gstelement_class->change_state =
- GST_DEBUG_FUNCPTR (gst_camerabin_change_state);
-
- /* gstbin */
- /* override handle_message to peek when video or image bin reaches eos */
- gstbin_class->handle_message =
- GST_DEBUG_FUNCPTR (gst_camerabin_handle_message_func);
-
-}
-
-/* initialize the new element
- * instantiate pads and add them to element
- * set functions
- * initialize structure
- */
-static void
-gst_camerabin_init (GstCameraBin * camera, GstCameraBinClass * gclass)
-{
- /* GstElementClass *klass = GST_ELEMENT_GET_CLASS (camera); */
-
- camera->filename = g_string_new ("");
- camera->mode = DEFAULT_MODE;
- camera->num_img_buffers = 0;
- camera->stop_requested = FALSE;
- camera->paused = FALSE;
- camera->capturing = FALSE;
- camera->night_mode = FALSE;
-
- camera->width = DEFAULT_WIDTH;
- camera->height = DEFAULT_HEIGHT;
- camera->fps_n = DEFAULT_FPS_N;
- camera->fps_d = DEFAULT_FPS_D;
-
- camera->image_capture_caps = NULL;
- camera->view_finder_caps = NULL;
- camera->allowed_caps = NULL;
-
- camera->zoom = DEFAULT_ZOOM;
-
- /* concurrency control */
- camera->capture_mutex = g_mutex_new ();
- camera->cond = g_cond_new ();
-
- /* pad names for output and input selectors */
- camera->pad_src_view = NULL;
- camera->pad_view_src = NULL;
- camera->pad_src_img = NULL;
- camera->pad_view_img = NULL;
- camera->pad_src_vid = NULL;
- camera->pad_view_vid = NULL;
- camera->srcpad_zoom_filter = NULL;
-
- /* source elements */
- camera->src_vid_src = NULL;
- camera->src_filter = NULL;
- camera->src_zoom_crop = NULL;
- camera->src_zoom_scale = NULL;
- camera->src_zoom_filter = NULL;
- camera->src_out_sel = NULL;
-
- camera->user_vf_sink = NULL;
-
- /* image capture bin */
- camera->imgbin = g_object_new (GST_TYPE_CAMERABIN_IMAGE, NULL);
- gst_object_ref (camera->imgbin);
-
- /* video capture bin */
- camera->vidbin = g_object_new (GST_TYPE_CAMERABIN_VIDEO, NULL);
- gst_object_ref (camera->vidbin);
-
- camera->active_bin = NULL;
-
- /* view finder elements */
- camera->view_in_sel = NULL;
- camera->view_scale = NULL;
- camera->view_sink = NULL;
-}
-
-static void
-gst_camerabin_dispose (GObject * object)
-{
- GstCameraBin *camera;
-
- camera = GST_CAMERABIN (object);
-
- GST_DEBUG_OBJECT (camera, "disposing");
-
- gst_element_set_state (camera->imgbin, GST_STATE_NULL);
- gst_object_unref (camera->imgbin);
-
- gst_element_set_state (camera->vidbin, GST_STATE_NULL);
- gst_object_unref (camera->vidbin);
-
- camerabin_destroy_elements (camera);
-
- camerabin_dispose_elements (camera);
-
- G_OBJECT_CLASS (parent_class)->dispose (object);
-}
-
-static void
-gst_camerabin_finalize (GObject * object)
-{
- G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static void
-gst_camerabin_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
-{
- GstCameraBin *camera = GST_CAMERABIN (object);
-
- switch (prop_id) {
- case ARG_MUTE:
- gst_camerabin_video_set_mute (GST_CAMERABIN_VIDEO (camera->vidbin),
- g_value_get_boolean (value));
- break;
- case ARG_ZOOM:
- g_atomic_int_set (&camera->zoom, g_value_get_int (value));
- gst_camerabin_setup_zoom (camera);
- break;
- case ARG_MODE:
- gst_camerabin_change_mode (camera, g_value_get_enum (value));
- break;
- case ARG_FILENAME:
- gst_camerabin_change_filename (camera, g_value_get_string (value));
- break;
- case ARG_VIDEO_POST:
- if (GST_STATE (camera->vidbin) != GST_STATE_NULL) {
- GST_WARNING_OBJECT (camera,
- "can't use set element until next video bin NULL to READY state change");
- }
- gst_camerabin_video_set_post (GST_CAMERABIN_VIDEO (camera->vidbin),
- g_value_get_object (value));
- break;
- case ARG_VIDEO_ENC:
- if (GST_STATE (camera->vidbin) != GST_STATE_NULL) {
- GST_WARNING_OBJECT (camera,
- "can't use set element until next video bin NULL to READY state change");
- }
- gst_camerabin_video_set_video_enc (GST_CAMERABIN_VIDEO (camera->vidbin),
- g_value_get_object (value));
- break;
- case ARG_AUDIO_ENC:
- if (GST_STATE (camera->vidbin) != GST_STATE_NULL) {
- GST_WARNING_OBJECT (camera,
- "can't use set element until next video bin NULL to READY state change");
- }
- gst_camerabin_video_set_audio_enc (GST_CAMERABIN_VIDEO (camera->vidbin),
- g_value_get_object (value));
- break;
- case ARG_VIDEO_MUX:
- if (GST_STATE (camera->vidbin) != GST_STATE_NULL) {
- GST_WARNING_OBJECT (camera->vidbin,
- "can't use set element until next video bin NULL to READY state change");
- }
- gst_camerabin_video_set_muxer (GST_CAMERABIN_VIDEO (camera->vidbin),
- g_value_get_object (value));
- break;
- case ARG_IMAGE_POST:
- if (GST_STATE (camera->imgbin) != GST_STATE_NULL) {
- GST_WARNING_OBJECT (camera,
- "can't use set element until next image bin NULL to READY state change");
- }
- gst_camerabin_image_set_postproc (GST_CAMERABIN_IMAGE (camera->imgbin),
- g_value_get_object (value));
- break;
- case ARG_IMAGE_ENC:
- if (GST_STATE (camera->imgbin) != GST_STATE_NULL) {
- GST_WARNING_OBJECT (camera,
- "can't use set element until next image bin NULL to READY state change");
- }
- gst_camerabin_image_set_encoder (GST_CAMERABIN_IMAGE (camera->imgbin),
- g_value_get_object (value));
- break;
- case ARG_VF_SINK:
- if (GST_STATE (camera) != GST_STATE_NULL) {
- GST_ELEMENT_ERROR (camera, CORE, FAILED,
- ("camerabin must be in NULL state when setting the view finder element"),
- (NULL));
- } else {
- if (camera->user_vf_sink)
- gst_object_unref (camera->user_vf_sink);
- camera->user_vf_sink = g_value_get_object (value);
- gst_object_ref (camera->user_vf_sink);
- }
- break;
- case ARG_VIDEO_SRC:
- if (GST_STATE (camera) != GST_STATE_NULL) {
- GST_ELEMENT_ERROR (camera, CORE, FAILED,
- ("camerabin must be in NULL state when setting the video source element"),
- (NULL));
- } else {
- if (camera->user_vid_src)
- gst_object_unref (camera->user_vid_src);
- camera->user_vid_src = g_value_get_object (value);
- gst_object_ref (camera->user_vid_src);
- }
- break;
- case ARG_AUDIO_SRC:
- if (GST_STATE (camera->vidbin) != GST_STATE_NULL) {
- GST_WARNING_OBJECT (camera,
- "can't use set element until next video bin NULL to READY state change");
- }
- gst_camerabin_video_set_audio_src (GST_CAMERABIN_VIDEO (camera->vidbin),
- g_value_get_object (value));
- break;
- case ARG_FILTER_CAPS:
- GST_OBJECT_LOCK (camera);
- if (camera->view_finder_caps) {
- gst_caps_unref (camera->view_finder_caps);
- }
- camera->view_finder_caps = gst_caps_copy (gst_value_get_caps (value));
- GST_OBJECT_UNLOCK (camera);
- gst_camerabin_set_capsfilter_caps (camera, camera->view_finder_caps);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gst_camerabin_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec)
-{
- GstCameraBin *camera = GST_CAMERABIN (object);
-
- switch (prop_id) {
- case ARG_FILENAME:
- g_value_set_string (value, camera->filename->str);
- break;
- case ARG_MODE:
- g_value_set_enum (value, camera->mode);
- break;
- case ARG_MUTE:
- g_value_set_boolean (value,
- gst_camerabin_video_get_mute (GST_CAMERABIN_VIDEO (camera->vidbin)));
- break;
- case ARG_ZOOM:
- g_value_set_int (value, g_atomic_int_get (&camera->zoom));
- break;
- case ARG_IMAGE_POST:
- g_value_set_object (value,
- gst_camerabin_image_get_postproc (GST_CAMERABIN_IMAGE
- (camera->imgbin)));
- break;
- case ARG_IMAGE_ENC:
- g_value_set_object (value,
- gst_camerabin_image_get_encoder (GST_CAMERABIN_IMAGE
- (camera->imgbin)));
- break;
- case ARG_VIDEO_POST:
- g_value_set_object (value,
- gst_camerabin_video_get_post (GST_CAMERABIN_VIDEO (camera->vidbin)));
- break;
- case ARG_VIDEO_ENC:
- g_value_set_object (value,
- gst_camerabin_video_get_video_enc (GST_CAMERABIN_VIDEO
- (camera->vidbin)));
- break;
- case ARG_AUDIO_ENC:
- g_value_set_object (value,
- gst_camerabin_video_get_audio_enc (GST_CAMERABIN_VIDEO
- (camera->vidbin)));
- break;
- case ARG_VIDEO_MUX:
- g_value_set_object (value,
- gst_camerabin_video_get_muxer (GST_CAMERABIN_VIDEO (camera->vidbin)));
- break;
- case ARG_VF_SINK:
- g_value_set_object (value, camera->user_vf_sink);
- break;
- case ARG_VIDEO_SRC:
- g_value_set_object (value, camera->src_vid_src);
- break;
- case ARG_AUDIO_SRC:
- g_value_set_object (value,
- gst_camerabin_video_get_audio_src (GST_CAMERABIN_VIDEO
- (camera->vidbin)));
- break;
- case ARG_INPUT_CAPS:
- gst_value_set_caps (value, gst_camerabin_get_allowed_input_caps (camera));
- break;
- case ARG_FILTER_CAPS:
- gst_value_set_caps (value, camera->view_finder_caps);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-/*
- * GstElement functions implementation
- */
-
-static GstStateChangeReturn
-gst_camerabin_change_state (GstElement * element, GstStateChange transition)
-{
- GstCameraBin *camera = GST_CAMERABIN (element);
- GstStateChangeReturn ret;
-
- switch (transition) {
- case GST_STATE_CHANGE_NULL_TO_READY:
- if (!camerabin_create_elements (camera)) {
- ret = GST_STATE_CHANGE_FAILURE;
- goto done;
- }
- /* Lock to control image and video bin state separately
- from view finder */
- gst_element_set_locked_state (camera->imgbin, TRUE);
- gst_element_set_locked_state (camera->vidbin, TRUE);
- break;
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- camerabin_setup_src_elements (camera);
- break;
- case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
- /* If using autovideosink, set view finder sink properties
- now that actual sink has been created. */
- camerabin_setup_view_elements (camera);
- break;
- case GST_STATE_CHANGE_READY_TO_NULL:
- gst_element_set_locked_state (camera->imgbin, FALSE);
- gst_element_set_locked_state (camera->vidbin, FALSE);
- break;
- default:
- break;
- }
-
- ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
- switch (transition) {
- case GST_STATE_CHANGE_PAUSED_TO_READY:
- GST_LOG_OBJECT (camera, "PAUSED to READY");
- g_mutex_lock (camera->capture_mutex);
- if (camera->capturing) {
- GST_WARNING_OBJECT (camera, "was capturing when changing to READY");
- camera->capturing = FALSE;
- /* Reset capture and don't wait for capturing to finish properly.
- Proper capturing should have been finished before going to READY. */
- gst_camerabin_reset_to_view_finder (camera);
- g_cond_signal (camera->cond);
- }
- g_mutex_unlock (camera->capture_mutex);
- break;
- case GST_STATE_CHANGE_READY_TO_NULL:
- camerabin_destroy_elements (camera);
- break;
- default:
- break;
- }
-
-done:
-
- return ret;
-}
-
-/*
- * GstBin functions implementation
- */
-
-/* Peek eos messages but don't interfere with bin msg handling */
-static void
-gst_camerabin_handle_message_func (GstBin * bin, GstMessage * msg)
-{
- GstCameraBin *camera = GST_CAMERABIN (bin);
-
- switch (GST_MESSAGE_TYPE (msg)) {
- case GST_MESSAGE_EOS:
- if (GST_MESSAGE_SRC (msg) == GST_OBJECT (camera->vidbin)) {
- /* Video eos */
- GST_DEBUG_OBJECT (camera,
- "got video eos message, stopping video capture");
- g_mutex_lock (camera->capture_mutex);
- camera->capturing = FALSE;
- g_cond_signal (camera->cond);
- g_mutex_unlock (camera->capture_mutex);
- } else if (GST_MESSAGE_SRC (msg) == GST_OBJECT (camera->imgbin)) {
- /* Image eos */
- GST_DEBUG_OBJECT (camera, "got image eos message");
- /* Unblock pad to process next buffer */
- gst_pad_set_blocked_async (camera->pad_src_img, FALSE,
- (GstPadBlockCallback) image_pad_blocked, camera);
- }
- break;
- default:
- break;
- }
- GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
-}
-
-/*
- * Action signal function implementation
- */
-
-static void
-gst_camerabin_user_start (GstCameraBin * camera)
-{
-
- GST_INFO_OBJECT (camera, "starting capture");
- if (camera->paused) {
- gst_camerabin_user_pause (camera);
- return;
- }
-
- if (!camera->active_bin) {
- GST_INFO_OBJECT (camera, "mode not explicitly set by application");
- gst_camerabin_change_mode (camera, camera->mode);
- }
-
- if (g_str_equal (camera->filename->str, "")) {
- GST_ELEMENT_ERROR (camera, CORE, FAILED,
- ("set filename before starting capture"), (NULL));
- return;
- }
-
- g_mutex_lock (camera->capture_mutex);
- if (camera->capturing) {
- GST_WARNING_OBJECT (camera, "capturing \"%s\" ongoing, set new filename",
- camera->filename->str);
- g_mutex_unlock (camera->capture_mutex);
- return;
- }
- g_mutex_unlock (camera->capture_mutex);
-
- g_object_set (G_OBJECT (camera->active_bin), "filename",
- camera->filename->str, NULL);
-
- if (camera->active_bin == camera->imgbin) {
- gst_camerabin_start_image_capture (camera);
- } else if (camera->active_bin == camera->vidbin) {
- gst_camerabin_start_video_recording (camera);
- }
-}
-
-static void
-gst_camerabin_user_stop (GstCameraBin * camera)
-{
- GST_INFO_OBJECT (camera, "stopping %s capture",
- camera->mode ? "video" : "image");
- gst_camerabin_do_stop (camera);
- gst_camerabin_reset_to_view_finder (camera);
-}
-
-static void
-gst_camerabin_user_pause (GstCameraBin * camera)
-{
- if (camera->active_bin == camera->vidbin) {
- if (!camera->paused) {
- GST_INFO_OBJECT (camera, "pausing capture");
-
- /* Bring all camerabin elements to PAUSED */
- gst_element_set_locked_state (camera->vidbin, FALSE);
- gst_element_set_state (GST_ELEMENT (camera), GST_STATE_PAUSED);
-
- /* Switch to view finder mode */
- g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", FALSE,
- "active-pad", camera->pad_src_view, NULL);
-
- /* Enable view finder mode in v4l2camsrc */
- if (g_object_class_find_property (G_OBJECT_GET_CLASS
- (camera->src_vid_src), "capture-mode")) {
- g_object_set (G_OBJECT (camera->src_vid_src), "capture-mode", 0, NULL);
- }
-
- /* Set view finder to PLAYING and leave videobin PAUSED */
- gst_element_set_locked_state (camera->vidbin, TRUE);
- gst_element_set_state (GST_ELEMENT (camera), GST_STATE_PLAYING);
-
- camera->paused = TRUE;
- } else {
- GST_INFO_OBJECT (camera, "unpausing capture");
-
- /* Bring all camerabin elements to PAUSED */
- gst_element_set_state (GST_ELEMENT (camera), GST_STATE_PAUSED);
-
- /* Switch to video recording mode */
- g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", TRUE,
- "active-pad", camera->pad_src_vid, NULL);
-
- /* Enable video recording mode in v4l2camsrc */
- if (g_object_class_find_property (G_OBJECT_GET_CLASS
- (camera->src_vid_src), "capture-mode")) {
- g_object_set (G_OBJECT (camera->src_vid_src), "capture-mode", 2, NULL);
- }
-
- /* Bring all camerabin elements to PLAYING */
- gst_element_set_locked_state (camera->vidbin, FALSE);
- gst_element_set_state (GST_ELEMENT (camera), GST_STATE_PLAYING);
- gst_element_set_locked_state (camera->vidbin, TRUE);
-
- camera->paused = FALSE;
- }
- GST_DEBUG_OBJECT (camera, "pause done");
- } else {
- GST_WARNING ("pausing in image capture mode disabled");
- }
-}
-
-static void
-gst_camerabin_user_res_fps (GstCameraBin * camera, gint width, gint height,
- gint fps_n, gint fps_d)
-{
- GstState state;
-
- GST_INFO_OBJECT (camera, "switching resolution to %dx%d and fps to %d/%d",
- width, height, fps_n, fps_d);
-
- state = GST_STATE (camera);
- gst_element_set_state (GST_ELEMENT (camera), GST_STATE_READY);
- camera->width = width;
- camera->height = height;
- camera->fps_n = fps_n;
- camera->fps_d = fps_d;
- gst_element_set_state (GST_ELEMENT (camera), state);
-}
-
-static void
-gst_camerabin_user_image_res (GstCameraBin * camera, gint width, gint height)
-{
- GstStructure *structure;
- GstCaps *new_caps = NULL;
- guint32 format = 0;
-
- g_return_if_fail (camera != NULL);
-
- if (width && height && camera->view_finder_caps) {
- /* Use view finder mode caps as a basis */
- structure = gst_caps_get_structure (camera->view_finder_caps, 0);
-
- /* Set new resolution for image capture */
- new_caps = gst_caps_new_simple (gst_structure_get_name (structure),
- "width", G_TYPE_INT, width, "height", G_TYPE_INT, height, NULL);
-
- /* Set format according to current videosrc format */
- format = get_srcpad_current_format (camera->src_vid_src);
- if (format) {
- gst_caps_set_simple (new_caps, "format", GST_TYPE_FOURCC, format, NULL);
- }
-
- /* Set allowed framerate for the resolution. */
- gst_camerabin_set_allowed_framerate (camera, new_caps);
-
- /* Reset the format to match with view finder mode caps */
- if (gst_structure_get_fourcc (structure, "format", &format)) {
- gst_caps_set_simple (new_caps, "format", GST_TYPE_FOURCC, format, NULL);
- }
- }
-
- GST_INFO_OBJECT (camera,
- "init filter caps for image capture %" GST_PTR_FORMAT, new_caps);
- gst_caps_replace (&camera->image_capture_caps, new_caps);
-}
-
-/* entry point to initialize the plug-in
- * initialize the plug-in itself
- * register the element factories and pad templates
- * register the features
- */
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
- GST_DEBUG_CATEGORY_INIT (gst_camerabin_debug, "camerabin", 0, "CameraBin");
-
- return gst_element_register (plugin, "camerabin",
- GST_RANK_NONE, GST_TYPE_CAMERABIN);
-}
-
-/* this is the structure that gstreamer looks for to register plugins
- */
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- "camerabin",
- "High level api for DC (Digital Camera) application",
- plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)