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basic/toolkit-integration: Bring in sync with the actual source code again

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Fixes syntax errors, a double free and others.

https://bugzilla.gnome.org/show_bug.cgi?id=779701
This commit is contained in:
Sebastian Dröge 2017-03-09 10:40:14 +02:00
parent 78321b96ff
commit 4752e9b45a
1 changed files with 23 additions and 25 deletions
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48
markdown/tutorials/basic/toolkit-integration.md
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@ -99,7 +99,7 @@ typedef struct _CustomData {
/* This function is called when the GUI toolkit creates the physical window that will hold the video.
* At this point we can retrieve its handler (which has a different meaning depending on the windowing system)
* and pass it to GStreamer through the GstVideoOverlay interface. */
* and pass it to GStreamer through the VideoOverlay interface. */
static void realize_cb (GtkWidget *widget, CustomData *data) {
GdkWindow *window = gtk_widget_get_window (widget);
guintptr window_handle;
@ -115,7 +115,7 @@ static void realize_cb (GtkWidget *widget, CustomData *data) {
#elif defined (GDK_WINDOWING_X11)
window_handle = GDK_WINDOW_XID (window);
#endif
/* Pass it to playbin, which implements GstVideoOverlay and will forward it to the video sink */
/* Pass it to playbin, which implements VideoOverlay and will forward it to the video sink */
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (data->playbin), window_handle);
}
@ -153,7 +153,6 @@ static gboolean draw_cb (GtkWidget *widget, cairo_t *cr, CustomData *data) {
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
cairo_fill (cr);
cairo_destroy (cr);
}
return FALSE;
@ -193,24 +192,24 @@ static void create_ui (CustomData *data) {
stop_button = gtk_button_new_from_stock (GTK_STOCK_MEDIA_STOP);
g_signal_connect (G_OBJECT (stop_button), "clicked", G_CALLBACK (stop_cb), data);
data->slider = gtk_hscale_new_with_range (0, 100, 1);
data->slider = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, 0, 100, 1);
gtk_scale_set_draw_value (GTK_SCALE (data->slider), 0);
data->slider_update_signal_id = g_signal_connect (G_OBJECT (data->slider), "value-changed", G_CALLBACK (slider_cb), data);
data->streams_list = gtk_text_view_new ();
gtk_text_view_set_editable (GTK_TEXT_VIEW (data->streams_list), FALSE);
controls = gtk_box_new (GTK_ORIENTATION_HORIZONTAL,, 0);
controls = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_box_pack_start (GTK_BOX (controls), play_button, FALSE, FALSE, 2);
gtk_box_pack_start (GTK_BOX (controls), pause_button, FALSE, FALSE, 2);
gtk_box_pack_start (GTK_BOX (controls), stop_button, FALSE, FALSE, 2);
gtk_box_pack_start (GTK_BOX (controls), data->slider, TRUE, TRUE, 2);
main_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL,, 0);
main_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_box_pack_start (GTK_BOX (main_hbox), video_window, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (main_hbox), data->streams_list, FALSE, FALSE, 2);
main_box = gtk_box_new (GTK_ORIENTATION_VERTICAL,, 0);
main_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_box_pack_start (GTK_BOX (main_box), main_hbox, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (main_box), controls, FALSE, FALSE, 0);
gtk_container_add (GTK_CONTAINER (main_window), main_box);
@ -255,7 +254,7 @@ static void tags_cb (GstElement *playbin, gint stream, CustomData *data) {
* thread of this event through a message in the bus */
gst_element_post_message (playbin,
gst_message_new_application (GST_OBJECT (playbin),
gst_structure_new ("tags-changed", NULL)));
gst_structure_new_empty ("tags-changed")));
}
/* This function is called when an error message is posted on the bus */
@ -382,7 +381,7 @@ static void analyze_streams (CustomData *data) {
/* This function is called when an "application" message is posted on the bus.
* Here we retrieve the message posted by the tags_cb callback */
static void application_cb (GstBus *bus, GstMessage *msg, CustomData *data) {
if (g_strcmp0 (gst_structure_get_name (gst_message_get_structure(msg)), "tags-changed") == 0) {
if (g_strcmp0 (gst_structure_get_name (gst_message_get_structure (msg)), "tags-changed") == 0) {
/* If the message is the "tags-changed" (only one we are currently issuing), update
* the stream info GUI */
analyze_streams (data);
@ -530,10 +529,10 @@ Standard GStreamer initialization and playbin pipeline creation, along
with GTK+ initialization. Not much new.
``` c
/* Connect to interesting signals in playbin */
g_signal_connect (G_OBJECT (data.playbin), "video-tags-changed", (GCallback) tags_cb, &data);
g_signal_connect (G_OBJECT (data.playbin), "audio-tags-changed", (GCallback) tags_cb, &data);
g_signal_connect (G_OBJECT (data.playbin), "text-tags-changed", (GCallback) tags_cb, &data);
/* Connect to interesting signals in playbin */
g_signal_connect (G_OBJECT (data.playbin), "video-tags-changed", (GCallback) tags_cb, &data);
g_signal_connect (G_OBJECT (data.playbin), "audio-tags-changed", (GCallback) tags_cb, &data);
g_signal_connect (G_OBJECT (data.playbin), "text-tags-changed", (GCallback) tags_cb, &data);
```
We are interested in being notified when new tags (metadata) appears on
@ -552,14 +551,14 @@ commands, as shown below when reviewing the
callbacks.
``` c
/* Instruct the bus to emit signals for each received message, and connect to the interesting signals */
bus = gst_element_get_bus (data.playbin);
gst_bus_add_signal_watch (bus);
g_signal_connect (G_OBJECT (bus), "message::error", (GCallback)error_cb, &data);
g_signal_connect (G_OBJECT (bus), "message::eos", (GCallback)eos_cb, &data);
g_signal_connect (G_OBJECT (bus), "message::state-changed", (GCallback)state_changed_cb, &data);
g_signal_connect (G_OBJECT (bus), "message::application", (GCallback)application_cb, &data);
gst_object_unref (bus);
/* Instruct the bus to emit signals for each received message, and connect to the interesting signals */
bus = gst_element_get_bus (data.playbin);
gst_bus_add_signal_watch (bus);
g_signal_connect (G_OBJECT (bus), "message::error", (GCallback)error_cb, &data);
g_signal_connect (G_OBJECT (bus), "message::eos", (GCallback)eos_cb, &data);
g_signal_connect (G_OBJECT (bus), "message::state-changed", (GCallback)state_changed_cb, &data);
g_signal_connect (G_OBJECT (bus), "message::application", (GCallback)application_cb, &data);
gst_object_unref (bus);
```
In [](tutorials/playback/playbin-usage.md), `gst_bus_add_watch()` is
@ -602,7 +601,7 @@ documentation of the signal.
``` c
/* This function is called when the GUI toolkit creates the physical window that will hold the video.
* At this point we can retrieve its handler (which has a different meaning depending on the windowing system)
* and pass it to GStreamer through the GstVideoOverlay interface. */
* and pass it to GStreamer through the VideoOverlay interface. */
static void realize_cb (GtkWidget *widget, CustomData *data) {
GdkWindow *window = gtk_widget_get_window (widget);
guintptr window_handle;
@ -618,7 +617,7 @@ static void realize_cb (GtkWidget *widget, CustomData *data) {
#elif defined (GDK_WINDOWING_X11)
window_handle = GDK_WINDOW_XID (window);
#endif
/* Pass it to playbin, which implements GstVideoOverlay and will forward it to the video sink */
/* Pass it to playbin, which implements VideoOverlay and will forward it to the video sink */
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (data->playbin), window_handle);
}
```
@ -690,7 +689,6 @@ static gboolean expose_cb (GtkWidget *widget, GdkEventExpose *event, CustomData
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
cairo_fill (cr);
cairo_destroy (cr);
}
return FALSE;
@ -791,7 +789,7 @@ static void tags_cb (GstElement *playbin, gint stream, CustomData *data) {
* thread of this event through a message in the bus */
gst_element_post_message (playbin,
gst_message_new_application (GST_OBJECT (playbin),
gst_structure_new ("tags-changed", NULL)));
gst_structure_new_empty ("tags-changed")));
}
```