gstreamer/tests/examples/camerabin2/gst-camera2.c
Tim-Philipp Müller 18e4e80b7d examples: force gtk to x11 backend
Until someone makes it work with the wayland backend.
The code currenty assumes and hard-codes X11.

https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/merge_requests/49
2018-11-25 16:28:25 +00:00

338 lines
9 KiB
C

/*
* 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.
*/
/*
* This is a demo application to test the camerabin element.
* If you have question don't hesitate in contact me edgard.lima@gmail.com
*/
/*
* Includes
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gst-camera2.h"
#include <string.h>
#include <gst/pbutils/encoding-profile.h>
#include <gst/gst.h>
#include <gst/video/videooverlay.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include <gdk/gdkkeysyms.h>
#define UI_FILE CAMERA_APPS_UIDIR G_DIR_SEPARATOR_S "gst-camera2.ui"
static GstElement *camera;
static GtkBuilder *builder;
static GtkWidget *ui_main_window;
typedef struct
{
const gchar *name;
GstEncodingProfile *(*create_profile) ();
} GstCameraVideoFormat;
static GstEncodingProfile *
create_ogg_profile (void)
{
GstEncodingContainerProfile *container;
GstCaps *caps = NULL;
caps = gst_caps_new_empty_simple ("application/ogg");
container = gst_encoding_container_profile_new ("ogg", NULL, caps, NULL);
gst_caps_unref (caps);
caps = gst_caps_new_empty_simple ("video/x-theora");
gst_encoding_container_profile_add_profile (container, (GstEncodingProfile *)
gst_encoding_video_profile_new (caps, NULL, NULL, 1));
gst_caps_unref (caps);
caps = gst_caps_new_empty_simple ("audio/x-vorbis");
gst_encoding_container_profile_add_profile (container, (GstEncodingProfile *)
gst_encoding_audio_profile_new (caps, NULL, NULL, 1));
gst_caps_unref (caps);
return (GstEncodingProfile *) container;
}
static GstEncodingProfile *
create_webm_profile (void)
{
GstEncodingContainerProfile *container;
GstCaps *caps = NULL;
caps = gst_caps_new_empty_simple ("video/webm");
container = gst_encoding_container_profile_new ("webm", NULL, caps, NULL);
gst_caps_unref (caps);
caps = gst_caps_new_empty_simple ("video/x-vp8");
gst_encoding_container_profile_add_profile (container, (GstEncodingProfile *)
gst_encoding_video_profile_new (caps, NULL, NULL, 1));
gst_caps_unref (caps);
caps = gst_caps_new_empty_simple ("audio/x-vorbis");
gst_encoding_container_profile_add_profile (container, (GstEncodingProfile *)
gst_encoding_audio_profile_new (caps, NULL, NULL, 1));
gst_caps_unref (caps);
return (GstEncodingProfile *) container;
}
static GstEncodingProfile *
create_mp4_profile (void)
{
GstEncodingContainerProfile *container;
GstCaps *caps = NULL;
caps =
gst_caps_new_simple ("video/quicktime", "variant", G_TYPE_STRING, "iso",
NULL);
container = gst_encoding_container_profile_new ("mp4", NULL, caps, NULL);
gst_caps_unref (caps);
caps = gst_caps_new_empty_simple ("video/x-h264");
gst_encoding_container_profile_add_profile (container, (GstEncodingProfile *)
gst_encoding_video_profile_new (caps, NULL, NULL, 1));
gst_caps_unref (caps);
caps = gst_caps_new_simple ("audio/mpeg", "version", G_TYPE_INT, 4, NULL);
gst_encoding_container_profile_add_profile (container, (GstEncodingProfile *)
gst_encoding_audio_profile_new (caps, NULL, NULL, 1));
gst_caps_unref (caps);
return (GstEncodingProfile *) container;
}
GstCameraVideoFormat formats[] = {
{"ogg (theora/vorbis)", create_ogg_profile}
,
{"webm (vp8/vorbis)", create_webm_profile}
,
{"mp4 (h264+aac)", create_mp4_profile}
,
{NULL, NULL}
};
void
on_mainWindow_delete_event (GtkWidget * widget, GdkEvent * event, gpointer data)
{
gtk_main_quit ();
}
void
on_captureButton_clicked (GtkButton * button, gpointer user_data)
{
g_signal_emit_by_name (camera, "start-capture", NULL);
}
void
on_stopCaptureButton_clicked (GtkButton * button, gpointer user_data)
{
g_signal_emit_by_name (camera, "stop-capture", NULL);
}
void
on_imageRButton_toggled (GtkToggleButton * button, gpointer user_data)
{
if (gtk_toggle_button_get_active (button)) {
g_object_set (camera, "mode", 1, NULL); /* Image mode */
}
}
void
on_videoRButton_toggled (GtkToggleButton * button, gpointer user_data)
{
if (gtk_toggle_button_get_active (button)) {
g_object_set (camera, "mode", 2, NULL); /* Video mode */
}
}
void
on_viewfinderArea_realize (GtkWidget * widget, gpointer data)
{
gdk_window_ensure_native (gtk_widget_get_window (widget));
}
void
on_formatComboBox_changed (GtkWidget * widget, gpointer data)
{
GstEncodingProfile *profile = NULL;
gint index = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
if (formats[index].create_profile) {
profile = formats[index].create_profile ();
}
g_return_if_fail (profile != NULL);
gst_element_set_state (camera, GST_STATE_NULL);
g_object_set (camera, "video-profile", profile, NULL);
gst_encoding_profile_unref (profile);
if (GST_STATE_CHANGE_FAILURE == gst_element_set_state (camera,
GST_STATE_PLAYING)) {
GtkWidget *dialog =
gtk_message_dialog_new (GTK_WINDOW (ui_main_window), GTK_DIALOG_MODAL,
GTK_MESSAGE_ERROR, GTK_BUTTONS_OK,
"Could not initialize camerabin with the "
"selected format. Your system might not have the required plugins installed.\n"
"Please select another format.");
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
}
void
on_zoomScale_value_changed (GtkWidget * widget, gpointer data)
{
g_object_set (camera, "zoom",
(gfloat) gtk_range_get_value (GTK_RANGE (widget)), NULL);
}
static GstBusSyncReply
bus_sync_callback (GstBus * bus, GstMessage * message, gpointer data)
{
GtkWidget *ui_drawing;
if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
return GST_BUS_PASS;
if (!gst_message_has_name (message, "prepare-window-handle"))
return GST_BUS_PASS;
/* FIXME: make sure to get XID in main thread */
ui_drawing = GTK_WIDGET (gtk_builder_get_object (builder, "viewfinderArea"));
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (message->src),
GDK_WINDOW_XID (gtk_widget_get_window (ui_drawing)));
gst_message_unref (message);
return GST_BUS_DROP;
}
static gboolean
bus_callback (GstBus * bus, GstMessage * message, gpointer data)
{
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_WARNING:{
GError *err;
gchar *debug;
gst_message_parse_warning (message, &err, &debug);
g_print ("Warning: %s\n", err->message);
g_error_free (err);
g_free (debug);
break;
}
case GST_MESSAGE_ERROR:{
GError *err = NULL;
gchar *debug = NULL;
gst_message_parse_error (message, &err, &debug);
g_print ("Error: %s : %s\n", err->message, debug);
g_error_free (err);
g_free (debug);
gtk_main_quit ();
break;
}
case GST_MESSAGE_EOS:
/* end-of-stream */
g_print ("Eos\n");
gtk_main_quit ();
break;
case GST_MESSAGE_ELEMENT:
{
//handle_element_message (message);
break;
}
default:
/* unhandled message */
break;
}
return TRUE;
}
static gboolean
init_gtkwidgets_data (void)
{
gint i;
GtkComboBoxText *combobox =
GTK_COMBO_BOX_TEXT (gtk_builder_get_object (builder, "formatComboBox"));
/* init formats combobox */
i = 0;
while (formats[i].name) {
gtk_combo_box_text_append_text (combobox, formats[i].name);
i++;
}
/* default to the first one -> ogg */
gtk_combo_box_set_active (GTK_COMBO_BOX (combobox), 0);
return TRUE;
}
int
main (int argc, char *argv[])
{
GError *error = NULL;
GstBus *bus;
/* FIXME: add support for Gdk Wayland backend, code currently assumes X11 */
if (g_getenv ("GDK_BACKEND") == NULL)
g_setenv ("GDK_BACKEND", "x11", TRUE);
gst_init (&argc, &argv);
gtk_init (&argc, &argv);
builder = gtk_builder_new ();
if (!gtk_builder_add_from_file (builder, UI_FILE, &error)) {
g_warning ("Error: %s", error->message);
g_error_free (error);
return 1;
}
camera = gst_element_factory_make ("camerabin", "camera");
bus = gst_pipeline_get_bus (GST_PIPELINE (camera));
gst_bus_add_watch (bus, bus_callback, NULL);
gst_bus_set_sync_handler (bus, bus_sync_callback, NULL, NULL);
gst_object_unref (bus);
if (!init_gtkwidgets_data ()) {
goto error;
}
ui_main_window = GTK_WIDGET (gtk_builder_get_object (builder, "mainWindow"));
gtk_builder_connect_signals (builder, NULL);
gtk_widget_show_all (ui_main_window);
gst_element_set_state (camera, GST_STATE_PLAYING);
gtk_main ();
error:
gst_element_set_state (camera, GST_STATE_NULL);
gst_object_unref (camera);
return 0;
}