mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 10:41:04 +00:00
299 lines
7.9 KiB
C
299 lines
7.9 KiB
C
#include <stdlib.h>
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#include <glib.h>
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#include <gtk/gtk.h>
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#include <gst/gst.h>
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#include <string.h>
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static GList *seekable_elements = NULL;
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static GstElement *pipeline;
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static GtkAdjustment *adjustment;
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static gboolean stats = FALSE;
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static guint64 duration;
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static guint update_id;
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#define UPDATE_INTERVAL 500
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static GstElement*
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make_cdaudio_pipeline (void)
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{
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GstElement *cdaudio;
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cdaudio = gst_element_factory_make ("cdaudio", "cdaudio");
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g_assert (cdaudio != NULL);
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seekable_elements = g_list_prepend (seekable_elements, cdaudio);
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return cdaudio;
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}
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static gchar*
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format_value (GtkScale *scale,
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gdouble value)
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{
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gint64 real;
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gint64 seconds;
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gint64 subseconds;
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real = value * duration / 100;
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seconds = (gint64) real / GST_SECOND;
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subseconds = (gint64) real / (GST_SECOND / 100);
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return g_strdup_printf ("%02lld:%02lld:%02lld",
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seconds/60,
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seconds%60,
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subseconds%100);
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}
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typedef struct
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{
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const gchar *name;
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const GstFormat format;
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} seek_format;
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static seek_format seek_formats[] =
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{
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{ "tim", GST_FORMAT_TIME },
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{ "byt", GST_FORMAT_BYTES },
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{ "buf", GST_FORMAT_BUFFERS },
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{ "def", GST_FORMAT_DEFAULT },
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{ NULL, 0 },
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};
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G_GNUC_UNUSED static void
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query_durations ()
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{
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GList *walk = seekable_elements;
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while (walk) {
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GstElement *element = GST_ELEMENT (walk->data);
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gint i = 0;
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g_print ("durations %8.8s: ", GST_ELEMENT_NAME (element));
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while (seek_formats[i].name) {
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gboolean res;
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gint64 value;
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GstFormat format;
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format = seek_formats[i].format;
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res = gst_element_query (element, GST_QUERY_TOTAL, &format, &value);
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if (res) {
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g_print ("%s %13lld | ", seek_formats[i].name, value);
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}
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else {
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g_print ("%s %13.13s | ", seek_formats[i].name, "*NA*");
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}
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i++;
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}
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g_print (" %s\n", GST_ELEMENT_NAME (element));
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walk = g_list_next (walk);
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}
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}
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G_GNUC_UNUSED static void
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query_positions ()
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{
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GList *walk = seekable_elements;
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while (walk) {
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GstElement *element = GST_ELEMENT (walk->data);
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gint i = 0;
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g_print ("positions %8.8s: ", GST_ELEMENT_NAME (element));
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while (seek_formats[i].name) {
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gboolean res;
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gint64 value;
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GstFormat format;
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format = seek_formats[i].format;
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res = gst_element_query (element, GST_QUERY_POSITION, &format, &value);
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if (res) {
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g_print ("%s %13lld | ", seek_formats[i].name, value);
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}
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else {
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g_print ("%s %13.13s | ", seek_formats[i].name, "*NA*");
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}
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i++;
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}
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g_print (" %s\n", GST_ELEMENT_NAME (element));
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walk = g_list_next (walk);
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}
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}
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static gboolean
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update_scale (gpointer data)
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{
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GstClock *clock;
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guint64 position = 0;
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GstFormat format = GST_FORMAT_TIME;
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duration = 0;
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clock = gst_bin_get_clock (GST_BIN (pipeline));
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if (seekable_elements) {
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GstElement *element = GST_ELEMENT (seekable_elements->data);
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gst_element_query (element, GST_QUERY_TOTAL, &format, &duration);
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}
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if (clock)
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position = gst_clock_get_time (clock);
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if (stats) {
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if (clock)
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g_print ("clock: %13llu (%s)\n", position, gst_object_get_name (GST_OBJECT (clock)));
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query_durations ();
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query_positions ();
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}
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if (duration > 0) {
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gtk_adjustment_set_value (adjustment, position * 100.0 / duration);
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}
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return TRUE;
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}
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static gboolean
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iterate (gpointer data)
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{
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gboolean res = TRUE;
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g_print ("iterate\n");
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res = gst_bin_iterate (GST_BIN (data));
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if (!res) {
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gtk_timeout_remove (update_id);
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g_print ("stopping iterations\n");
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}
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return res;
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}
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static gboolean
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start_seek (GtkWidget *widget, GdkEventButton *event, gpointer user_data)
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{
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gst_element_set_state (pipeline, GST_STATE_PAUSED);
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gtk_timeout_remove (update_id);
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return FALSE;
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}
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static gboolean
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stop_seek (GtkWidget *widget, GdkEventButton *event, gpointer user_data)
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{
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gint64 real = gtk_range_get_value (GTK_RANGE (widget)) * duration / 100;
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gboolean res;
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GstEvent *s_event;
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GList *walk = seekable_elements;
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while (walk) {
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GstElement *seekable = GST_ELEMENT (walk->data);
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g_print ("seek to %lld on element %s\n", real, GST_ELEMENT_NAME (seekable));
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s_event = gst_event_new_seek (GST_FORMAT_TIME |
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GST_SEEK_METHOD_SET |
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GST_SEEK_FLAG_FLUSH, real);
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res = gst_element_send_event (seekable, s_event);
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walk = g_list_next (walk);
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}
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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if (!GST_FLAG_IS_SET (pipeline, GST_BIN_SELF_SCHEDULABLE))
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gtk_idle_add ((GtkFunction) iterate, pipeline);
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update_id = gtk_timeout_add (UPDATE_INTERVAL, (GtkFunction) update_scale, pipeline);
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return FALSE;
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}
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static void
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play_cb (GtkButton * button, gpointer data)
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{
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if (gst_element_get_state (pipeline) != GST_STATE_PLAYING) {
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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if (!GST_FLAG_IS_SET (pipeline, GST_BIN_SELF_SCHEDULABLE))
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gtk_idle_add ((GtkFunction) iterate, pipeline);
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update_id = gtk_timeout_add (UPDATE_INTERVAL, (GtkFunction) update_scale, pipeline);
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}
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}
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static void
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pause_cb (GtkButton * button, gpointer data)
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{
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if (gst_element_get_state (pipeline) != GST_STATE_PAUSED) {
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gst_element_set_state (pipeline, GST_STATE_PAUSED);
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gtk_timeout_remove (update_id);
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}
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}
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static void
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stop_cb (GtkButton * button, gpointer data)
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{
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if (gst_element_get_state (pipeline) != GST_STATE_READY) {
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gst_element_set_state (pipeline, GST_STATE_READY);
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gtk_timeout_remove (update_id);
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}
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}
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int
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main (int argc, char **argv)
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{
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GtkWidget *window, *hbox, *vbox,
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*play_button, *pause_button, *stop_button,
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*hscale;
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struct poptOption options[] = {
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{"stats", 's', POPT_ARG_NONE|POPT_ARGFLAG_STRIP, &stats, 0,
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"Show element stats", NULL},
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POPT_TABLEEND
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};
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gst_init_with_popt_table (&argc, &argv, options);
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gtk_init (&argc, &argv);
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pipeline = make_cdaudio_pipeline ();
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g_signal_connect (pipeline, "deep_notify", G_CALLBACK (gst_element_default_deep_notify), NULL);
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g_signal_connect (pipeline, "error", G_CALLBACK (gst_element_default_error), NULL);
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/* initialize gui elements ... */
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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hbox = gtk_hbox_new (FALSE, 0);
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vbox = gtk_vbox_new (FALSE, 0);
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play_button = gtk_button_new_with_label ("play");
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pause_button = gtk_button_new_with_label ("pause");
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stop_button = gtk_button_new_with_label ("stop");
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adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.00, 100.0, 0.1, 1.0, 1.0));
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hscale = gtk_hscale_new (adjustment);
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gtk_scale_set_digits (GTK_SCALE (hscale), 2);
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gtk_range_set_update_policy (GTK_RANGE (hscale), GTK_UPDATE_CONTINUOUS);
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gtk_signal_connect(GTK_OBJECT(hscale),
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"button_press_event", G_CALLBACK (start_seek), pipeline);
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gtk_signal_connect(GTK_OBJECT(hscale),
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"button_release_event", G_CALLBACK (stop_seek), pipeline);
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gtk_signal_connect(GTK_OBJECT(hscale),
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"format_value", G_CALLBACK (format_value), pipeline);
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/* do the packing stuff ... */
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gtk_window_set_default_size (GTK_WINDOW (window), 96, 96);
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gtk_container_add (GTK_CONTAINER (window), vbox);
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gtk_container_add (GTK_CONTAINER (vbox), hbox);
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gtk_box_pack_start (GTK_BOX (hbox), play_button, FALSE, FALSE, 2);
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gtk_box_pack_start (GTK_BOX (hbox), pause_button, FALSE, FALSE, 2);
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gtk_box_pack_start (GTK_BOX (hbox), stop_button, FALSE, FALSE, 2);
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gtk_box_pack_start (GTK_BOX (vbox), hscale, TRUE, TRUE, 2);
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/* connect things ... */
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g_signal_connect (G_OBJECT (play_button), "clicked", G_CALLBACK (play_cb), pipeline);
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g_signal_connect (G_OBJECT (pause_button), "clicked", G_CALLBACK (pause_cb), pipeline);
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g_signal_connect (G_OBJECT (stop_button), "clicked", G_CALLBACK (stop_cb), pipeline);
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g_signal_connect (G_OBJECT (window), "delete_event", gtk_main_quit, NULL);
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/* show the gui. */
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gtk_widget_show_all (window);
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gtk_main ();
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gst_element_set_state (pipeline, GST_STATE_NULL);
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return 0;
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}
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