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examples: playback: add labels with supported seek range

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Add the supported seeking range in the advanced seek area.
Also implement seeking querying the pipeline to retrieve those
values and show to the user. It is done in a smaller frequency
compared to the position/duration querying.
This commit is contained in:
Thiago Santos 2015-01-14 10:35:34 -03:00
parent a5ed7afb4c
commit 24b04aade4
1 changed files with 56 additions and 0 deletions
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56
tests/examples/playback/playback-test.c
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@ -77,6 +77,7 @@ typedef enum
//#define UPDATE_INTERVAL 500
//#define UPDATE_INTERVAL 100
#define UPDATE_INTERVAL 40
#define SLOW_UPDATE_INTERVAL 500
/* number of milliseconds to play for after a seek */
#define SCRUB_TIME 100
@ -118,6 +119,7 @@ typedef struct
GtkWidget *subtitle_fontdesc_button;
GtkWidget *seek_format_combo, *seek_position_label, *seek_duration_label;
GtkWidget *seek_start_label, *seek_stop_label;
GtkWidget *seek_entry;
GtkWidget *seek_scale, *statusbar;
@ -174,6 +176,7 @@ typedef struct
gint64 buffering_left;
GstState state;
guint update_id;
guint slow_update_id;
guint seek_timeout_id; /* Used for scrubbing in paused */
gulong changed_id;
guint fill_id;
@ -427,6 +430,37 @@ update_fill (PlaybackApp * app)
return TRUE;
}
static gboolean
update_seek_range (PlaybackApp * app)
{
GstFormat format = GST_FORMAT_TIME;
gint64 seek_start, seek_stop;
gboolean seekable;
GstQuery *query;
query = gst_query_new_seeking (format);
if (gst_element_query (app->pipeline, query)) {
gchar *str;
gst_query_parse_seeking (query, &format, &seekable, &seek_start,
&seek_stop);
if (!seekable) {
seek_start = seek_stop = -1;
}
str = g_strdup_printf ("%" G_GINT64_FORMAT, seek_start);
gtk_label_set_text (GTK_LABEL (app->seek_start_label), str);
g_free (str);
str = g_strdup_printf ("%" G_GINT64_FORMAT, seek_stop);
gtk_label_set_text (GTK_LABEL (app->seek_stop_label), str);
g_free (str);
}
gst_query_unref (query);
return TRUE;
}
static gboolean
update_scale (PlaybackApp * app)
{
@ -620,11 +654,20 @@ set_update_scale (PlaybackApp * app, gboolean active)
app->update_id =
g_timeout_add (UPDATE_INTERVAL, (GSourceFunc) update_scale, app);
}
if (app->slow_update_id == 0) {
app->slow_update_id =
g_timeout_add (SLOW_UPDATE_INTERVAL, (GSourceFunc) update_seek_range,
app);
}
} else {
if (app->update_id) {
g_source_remove (app->update_id);
app->update_id = 0;
}
if (app->slow_update_id) {
g_source_remove (app->slow_update_id);
app->slow_update_id = 0;
}
}
}
@ -2579,6 +2622,7 @@ create_ui (PlaybackApp * app)
GtkWidget *skip_checkbox, *rate_spinbutton;
GtkWidget *flagtable, *advanced_seek, *advanced_seek_grid;
GtkWidget *duration_label, *position_label, *seek_button;
GtkWidget *start_label, *stop_label;
seek = gtk_expander_new ("seek options");
flagtable = gtk_grid_new ();
@ -2692,6 +2736,18 @@ create_ui (PlaybackApp * app)
gtk_grid_attach (GTK_GRID (advanced_seek_grid), app->seek_duration_label, 3,
1, 1, 1);
start_label = gtk_label_new ("Seek start:");
gtk_grid_attach (GTK_GRID (advanced_seek_grid), start_label, 4, 0, 1, 1);
stop_label = gtk_label_new ("Seek stop:");
gtk_grid_attach (GTK_GRID (advanced_seek_grid), stop_label, 4, 1, 1, 1);
app->seek_start_label = gtk_label_new ("-1");
gtk_grid_attach (GTK_GRID (advanced_seek_grid), app->seek_start_label, 5,
0, 1, 1);
app->seek_stop_label = gtk_label_new ("-1");
gtk_grid_attach (GTK_GRID (advanced_seek_grid), app->seek_stop_label, 5,
1, 1, 1);
gtk_container_add (GTK_CONTAINER (advanced_seek), advanced_seek_grid);
gtk_grid_attach (GTK_GRID (flagtable), advanced_seek, 0, 3, 3, 2);
gtk_container_add (GTK_CONTAINER (seek), flagtable);