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-rw-r--r--examples/seeking/Makefile.am7
-rw-r--r--examples/seeking/seek.c531
2 files changed, 538 insertions, 0 deletions
diff --git a/examples/seeking/Makefile.am b/examples/seeking/Makefile.am
new file mode 100644
index 00000000..ec73f0e2
--- /dev/null
+++ b/examples/seeking/Makefile.am
@@ -0,0 +1,7 @@
+examples = seek
+
+noinst_PROGRAMS = $(examples)
+
+# we have nothing but apps here, we can do this safely
+LIBS = $(GST_LIBS) $(GTK_LIBS)
+CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS)
diff --git a/examples/seeking/seek.c b/examples/seeking/seek.c
new file mode 100644
index 00000000..50a311cd
--- /dev/null
+++ b/examples/seeking/seek.c
@@ -0,0 +1,531 @@
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <gst/gst.h>
+#include <string.h>
+
+static GList *seekables = NULL;
+static GList *rate_pads = NULL;
+
+static GstElement *pipeline;
+static guint64 duration, position;
+static GtkAdjustment *adjustment;
+
+static guint update_id;
+
+#define UPDATE_INTERVAL 500
+
+#define THREAD
+
+typedef struct
+{
+ const gchar *padname;
+ GstPad *target;
+ GstElement *bin;
+} dyn_connect;
+
+static void
+dynamic_connect (GstPadTemplate *templ, GstPad *newpad, gpointer data)
+{
+ dyn_connect *connect = (dyn_connect *) data;
+
+ if (!strcmp (gst_pad_get_name (newpad), connect->padname)) {
+ gst_element_set_state (pipeline, GST_STATE_PAUSED);
+ gst_bin_add (GST_BIN (pipeline), connect->bin);
+ gst_pad_connect (newpad, connect->target);
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+
+ seekables = g_list_prepend (seekables, newpad);
+ rate_pads = g_list_prepend (rate_pads, newpad);
+ }
+}
+
+static void
+setup_dynamic_connection (GstElement *element, const gchar *padname, GstPad *target, GstElement *bin)
+{
+ dyn_connect *connect;
+
+ connect = g_new0 (dyn_connect, 1);
+ connect->padname = g_strdup (padname);
+ connect->target = target;
+ connect->bin = bin;
+
+ g_signal_connect (G_OBJECT (element), "new_pad", G_CALLBACK (dynamic_connect), connect);
+}
+
+static GstElement*
+make_parse_pipeline (const gchar *location)
+{
+ GstElement *pipeline;
+ GstElement *src, *parser, *fakesink;
+ GstPad *seekable;
+
+ pipeline = gst_pipeline_new ("app");
+
+ src = gst_element_factory_make ("filesrc", "src");
+ parser = gst_element_factory_make ("mpegparse", "parse");
+ fakesink = gst_element_factory_make ("fakesink", "sink");
+ g_object_set (G_OBJECT (fakesink), "sync", TRUE, NULL);
+
+ g_object_set (G_OBJECT (src), "location", location, NULL);
+
+ gst_bin_add (GST_BIN (pipeline), src);
+ gst_bin_add (GST_BIN (pipeline), parser);
+ gst_bin_add (GST_BIN (pipeline), fakesink);
+
+ gst_element_connect (src, parser);
+ gst_element_connect (parser, fakesink);
+
+ seekable = gst_element_get_pad (parser, "src");
+ seekables = g_list_prepend (seekables, seekable);
+ rate_pads = g_list_prepend (rate_pads, seekable);
+ rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (parser, "sink"));
+
+ return pipeline;
+}
+
+static GstElement*
+make_mp3_pipeline (const gchar *location)
+{
+ GstElement *pipeline;
+ GstElement *src, *decoder, *osssink;
+ GstPad *seekable;
+
+ pipeline = gst_pipeline_new ("app");
+
+ src = gst_element_factory_make ("filesrc", "src");
+ decoder = gst_element_factory_make ("mad", "dec");
+ osssink = gst_element_factory_make ("osssink", "sink");
+
+ g_object_set (G_OBJECT (src), "location", location, NULL);
+ g_object_set (G_OBJECT (osssink), "fragment", 0x00180008, NULL);
+
+ gst_bin_add (GST_BIN (pipeline), src);
+ gst_bin_add (GST_BIN (pipeline), decoder);
+ gst_bin_add (GST_BIN (pipeline), osssink);
+
+ gst_element_connect (src, decoder);
+ gst_element_connect (decoder, osssink);
+
+ seekable = gst_element_get_pad (decoder, "src");
+ seekables = g_list_prepend (seekables, seekable);
+ rate_pads = g_list_prepend (rate_pads, seekable);
+ rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (decoder, "sink"));
+
+ return pipeline;
+}
+
+static GstElement*
+make_avi_pipeline (const gchar *location)
+{
+ GstElement *pipeline, *audio_bin, *video_bin;
+ GstElement *src, *demux, *a_decoder, *v_decoder, *audiosink, *videosink;
+ GstElement *a_queue = NULL, *audio_thread = NULL, *v_queue = NULL, *video_thread = NULL;
+ GstPad *seekable;
+
+ pipeline = gst_pipeline_new ("app");
+
+ src = gst_element_factory_make ("filesrc", "src");
+ g_object_set (G_OBJECT (src), "location", location, NULL);
+
+ demux = gst_element_factory_make ("avidemux", "demux");
+
+ gst_bin_add (GST_BIN (pipeline), src);
+ gst_bin_add (GST_BIN (pipeline), demux);
+ gst_element_connect (src, demux);
+
+ audio_bin = gst_bin_new ("a_decoder_bin");
+ a_decoder = gst_element_factory_make ("mad", "a_dec");
+ audio_thread = gst_thread_new ("a_decoder_thread");
+ audiosink = gst_element_factory_make ("osssink", "a_sink");
+ g_object_set (G_OBJECT (audiosink), "fragment", 0x00180008, NULL);
+ a_queue = gst_element_factory_make ("queue", "a_queue");
+ gst_element_connect (a_decoder, a_queue);
+ gst_element_connect (a_queue, audiosink);
+ gst_bin_add (GST_BIN (audio_bin), a_decoder);
+ gst_bin_add (GST_BIN (audio_bin), audio_thread);
+ gst_bin_add (GST_BIN (audio_thread), a_queue);
+ gst_bin_add (GST_BIN (audio_thread), audiosink);
+ gst_element_set_state (audio_bin, GST_STATE_READY);
+
+ setup_dynamic_connection (demux, "audio_00", gst_element_get_pad (a_decoder, "sink"), audio_bin);
+
+ seekable = gst_element_get_pad (a_queue, "src");
+ seekables = g_list_prepend (seekables, seekable);
+ rate_pads = g_list_prepend (rate_pads, seekable);
+ rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (a_decoder, "sink"));
+
+ video_bin = gst_bin_new ("v_decoder_bin");
+ //v_decoder = gst_element_factory_make ("identity", "v_dec");
+ v_decoder = gst_element_factory_make ("windec", "v_dec");
+ video_thread = gst_thread_new ("v_decoder_thread");
+ videosink = gst_element_factory_make ("xvideosink", "v_sink");
+ //videosink = gst_element_factory_make ("fakesink", "v_sink");
+ //g_object_set (G_OBJECT (videosink), "sync", TRUE, NULL);
+ v_queue = gst_element_factory_make ("queue", "v_queue");
+ g_object_set (G_OBJECT (v_queue), "max_level", 10, NULL);
+ gst_element_connect (v_decoder, v_queue);
+ gst_element_connect (v_queue, videosink);
+ gst_bin_add (GST_BIN (video_bin), v_decoder);
+ gst_bin_add (GST_BIN (video_bin), video_thread);
+ gst_bin_add (GST_BIN (video_thread), v_queue);
+ gst_bin_add (GST_BIN (video_thread), videosink);
+
+ gst_element_set_state (video_bin, GST_STATE_READY);
+
+ setup_dynamic_connection (demux, "video_00", gst_element_get_pad (v_decoder, "sink"), video_bin);
+
+ seekable = gst_element_get_pad (v_queue, "src");
+ seekables = g_list_prepend (seekables, seekable);
+ rate_pads = g_list_prepend (rate_pads, seekable);
+ rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (v_decoder, "sink"));
+
+ return pipeline;
+}
+
+static GstElement*
+make_mpeg_pipeline (const gchar *location)
+{
+ GstElement *pipeline, *audio_bin, *video_bin;
+ GstElement *src, *demux, *a_decoder, *v_decoder, *audiosink, *videosink;
+ GstElement *a_queue, *audio_thread, *v_queue, *video_thread;
+ GstPad *seekable;
+
+ pipeline = gst_pipeline_new ("app");
+
+ src = gst_element_factory_make ("filesrc", "src");
+ g_object_set (G_OBJECT (src), "location", location, NULL);
+
+ demux = gst_element_factory_make ("mpegdemux", "demux");
+ g_object_set (G_OBJECT (demux), "sync", FALSE, NULL);
+
+ gst_bin_add (GST_BIN (pipeline), src);
+ gst_bin_add (GST_BIN (pipeline), demux);
+ gst_element_connect (src, demux);
+
+ audio_bin = gst_bin_new ("a_decoder_bin");
+ a_decoder = gst_element_factory_make ("mad", "a_dec");
+ audio_thread = gst_thread_new ("a_decoder_thread");
+ a_queue = gst_element_factory_make ("queue", "a_queue");
+ audiosink = gst_element_factory_make ("osssink", "a_sink");
+ g_object_set (G_OBJECT (audiosink), "fragment", 0x00180008, NULL);
+ gst_element_connect (a_decoder, a_queue);
+ gst_element_connect (a_queue, audiosink);
+ gst_bin_add (GST_BIN (audio_bin), a_decoder);
+ gst_bin_add (GST_BIN (audio_bin), audio_thread);
+ gst_bin_add (GST_BIN (audio_thread), a_queue);
+ gst_bin_add (GST_BIN (audio_thread), audiosink);
+
+ setup_dynamic_connection (demux, "audio_00", gst_element_get_pad (a_decoder, "sink"), audio_bin);
+
+ seekable = gst_element_get_pad (a_queue, "src");
+ seekables = g_list_prepend (seekables, seekable);
+ rate_pads = g_list_prepend (rate_pads, seekable);
+ rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (a_decoder, "sink"));
+
+ video_bin = gst_bin_new ("v_decoder_bin");
+ v_decoder = gst_element_factory_make ("mpeg2dec", "v_dec");
+ video_thread = gst_thread_new ("v_decoder_thread");
+ v_queue = gst_element_factory_make ("queue", "v_queue");
+ videosink = gst_element_factory_make ("xvideosink", "v_sink");
+ gst_element_connect (v_decoder, v_queue);
+ gst_element_connect (v_queue, videosink);
+ gst_bin_add (GST_BIN (video_bin), v_decoder);
+ gst_bin_add (GST_BIN (video_bin), video_thread);
+ gst_bin_add (GST_BIN (video_thread), v_queue);
+ gst_bin_add (GST_BIN (video_thread), videosink);
+
+ setup_dynamic_connection (demux, "video_00", gst_element_get_pad (v_decoder, "sink"), video_bin);
+
+ seekable = gst_element_get_pad (v_queue, "src");
+ seekables = g_list_prepend (seekables, seekable);
+ rate_pads = g_list_prepend (rate_pads, seekable);
+ rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (v_decoder, "sink"));
+
+ return pipeline;
+}
+
+static gchar*
+format_value (GtkScale *scale,
+ gdouble value)
+{
+ gint real = value * duration / 100;
+ gint seconds = (gint) real/1000000;
+ gint subseconds = (gint) real/10000;
+
+ return g_strdup_printf ("%02d:%02d:%02d",
+ seconds/60,
+ seconds%60,
+ subseconds%100);
+}
+
+typedef struct
+{
+ const gchar *name;
+ const GstFormat format;
+} seek_format;
+
+static seek_format seek_formats[] =
+{
+ { "tim", GST_FORMAT_TIME },
+ { "byt", GST_FORMAT_BYTES },
+ { "smp", GST_FORMAT_SAMPLES },
+ { "frm", GST_FORMAT_FRAMES },
+ { "fld", GST_FORMAT_FIELDS },
+ { "buf", GST_FORMAT_BUFFERS },
+ { "def", GST_FORMAT_DEFAULT },
+ { NULL, 0 },
+};
+
+G_GNUC_UNUSED static void
+query_rates (void)
+{
+ GList *walk = rate_pads;
+
+ while (walk) {
+ GstPad *pad = GST_PAD (walk->data);
+ gint i = 0;
+
+ g_print ("rate/sec %8.8s: ", GST_PAD_NAME (pad));
+ while (seek_formats[i].name) {
+ gint64 value;
+ GstFormat format;
+
+ format = seek_formats[i].format;
+
+ if (gst_pad_convert (pad, GST_FORMAT_TIME, GST_SECOND,
+ &format, &value))
+ {
+ g_print ("%s %10lld | ", seek_formats[i].name, value);
+ }
+ else {
+ g_print ("%s %10.10s | ", seek_formats[i].name, "*NA*");
+ }
+
+ i++;
+ }
+ g_print (" %s:%s\n", GST_DEBUG_PAD_NAME (pad));
+
+ walk = g_list_next (walk);
+ }
+}
+
+G_GNUC_UNUSED static void
+query_durations (GstPad *pad)
+{
+ gint i = 0;
+
+ g_print ("durations %8.8s: ", GST_PAD_NAME (pad));
+ while (seek_formats[i].name) {
+ gboolean res;
+ gint64 value;
+ GstFormat format;
+
+ format = seek_formats[i].format;
+ res = gst_pad_query (pad, GST_PAD_QUERY_TOTAL, &format, &value);
+ if (res) {
+ g_print ("%s %10lld | ", seek_formats[i].name, value);
+ if (seek_formats[i].format == GST_FORMAT_TIME)
+ duration = value;
+ }
+ else {
+ g_print ("%s %10.10s | ", seek_formats[i].name, "*NA*");
+ }
+ i++;
+ }
+ g_print (" %s:%s\n", GST_DEBUG_PAD_NAME (pad));
+}
+
+G_GNUC_UNUSED static void
+query_positions (GstPad *pad)
+{
+ gint i = 0;
+
+ g_print ("positions %8.8s: ", GST_PAD_NAME (pad));
+ while (seek_formats[i].name) {
+ gboolean res;
+ gint64 value;
+ GstFormat format;
+
+ format = seek_formats[i].format;
+ res = gst_pad_query (pad, GST_PAD_QUERY_POSITION, &format, &value);
+ if (res) {
+ g_print ("%s %10lld | ", seek_formats[i].name, value);
+ if (seek_formats[i].format == GST_FORMAT_TIME)
+ position = value;
+ }
+ else {
+ g_print ("%s %10.10s | ", seek_formats[i].name, "*NA*");
+ }
+ i++;
+ }
+ g_print (" %s:%s\n", GST_DEBUG_PAD_NAME (pad));
+}
+
+static gboolean
+update_scale (gpointer data)
+{
+ GList *walk = seekables;
+ GstClock *clock;
+
+ clock = gst_bin_get_clock (GST_BIN (pipeline));
+
+ g_print ("clock: %10llu\n", gst_clock_get_time (clock));
+
+ while (walk) {
+ GstPad *pad = GST_PAD (walk->data);
+
+ query_durations (pad);
+ query_positions (pad);
+
+ walk = g_list_next (walk);
+ }
+ query_rates ();
+
+ if (duration > 0) {
+ gtk_adjustment_set_value (adjustment, position * 100.0 / duration);
+ }
+
+ return TRUE;
+}
+
+static gboolean
+iterate (gpointer data)
+{
+ gboolean res;
+
+ res = gst_bin_iterate (GST_BIN (data));
+ if (!res) {
+ gtk_timeout_remove (update_id);
+ g_print ("stopping iterations\n");
+ }
+ return res;
+}
+
+static gboolean
+start_seek (GtkWidget *widget, GdkEventButton *event, gpointer user_data)
+{
+ gst_element_set_state (pipeline, GST_STATE_PAUSED);
+ gtk_timeout_remove (update_id);
+
+ return FALSE;
+}
+
+static gboolean
+stop_seek (GtkWidget *widget, GdkEventButton *event, gpointer user_data)
+{
+ gint64 real = gtk_range_get_value (GTK_RANGE (widget)) * duration / 100;
+ gboolean res;
+ GstEvent *s_event;
+ GList *walk = seekables;
+
+ while (walk) {
+ GstPad *seekable = GST_PAD (walk->data);
+
+ g_print ("seek to %lld on pad %s:%s\n", real, GST_DEBUG_PAD_NAME (seekable));
+ s_event = gst_event_new_seek (GST_FORMAT_TIME |
+ GST_SEEK_METHOD_SET |
+ GST_SEEK_FLAG_FLUSH, real);
+
+ res = gst_pad_send_event (seekable, s_event);
+ gst_event_free (s_event);
+
+ walk = g_list_next (walk);
+ }
+
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+ gtk_idle_add ((GtkFunction) iterate, pipeline);
+ update_id = gtk_timeout_add (UPDATE_INTERVAL, (GtkFunction) update_scale, pipeline);
+
+ return FALSE;
+}
+
+static void
+play_cb (GtkButton * button, gpointer data)
+{
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+ gtk_idle_add ((GtkFunction) iterate, pipeline);
+ update_id = gtk_timeout_add (UPDATE_INTERVAL, (GtkFunction) update_scale, pipeline);
+}
+
+static void
+pause_cb (GtkButton * button, gpointer data)
+{
+ gst_element_set_state (pipeline, GST_STATE_PAUSED);
+ gtk_timeout_remove (update_id);
+}
+
+static void
+stop_cb (GtkButton * button, gpointer data)
+{
+ gst_element_set_state (pipeline, GST_STATE_READY);
+ gtk_timeout_remove (update_id);
+}
+
+int
+main (int argc, char **argv)
+{
+ GtkWidget *window, *hbox, *vbox,
+ *play_button, *pause_button, *stop_button,
+ *hscale;
+
+ gst_init (&argc, &argv);
+ gtk_init (&argc, &argv);
+
+ if (argc != 3) {
+ g_print ("usage: %s <type 0=mp3 1=avi 2=mpeg1 3=mpegparse> <filename>\n", argv[0]);
+ exit (-1);
+ }
+
+ if (atoi (argv[1]) == 0)
+ pipeline = make_mp3_pipeline (argv[2]);
+ else if (atoi (argv[1]) == 1)
+ pipeline = make_avi_pipeline (argv[2]);
+ else if (atoi (argv[1]) == 2)
+ pipeline = make_mpeg_pipeline (argv[2]);
+ else
+ pipeline = make_parse_pipeline (argv[2]);
+
+ /* initialize gui elements ... */
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ hbox = gtk_hbox_new (FALSE, 0);
+ vbox = gtk_vbox_new (FALSE, 0);
+ play_button = gtk_button_new_with_label ("play");
+ pause_button = gtk_button_new_with_label ("pause");
+ stop_button = gtk_button_new_with_label ("stop");
+
+ adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.00, 100.0, 0.1, 1.0, 1.0));
+ hscale = gtk_hscale_new (adjustment);
+ gtk_scale_set_digits (GTK_SCALE (hscale), 2);
+ gtk_range_set_update_policy (GTK_RANGE (hscale), GTK_UPDATE_CONTINUOUS);
+
+ gtk_signal_connect(GTK_OBJECT(hscale),
+ "button_press_event", G_CALLBACK (start_seek), pipeline);
+ gtk_signal_connect(GTK_OBJECT(hscale),
+ "button_release_event", G_CALLBACK (stop_seek), pipeline);
+ gtk_signal_connect(GTK_OBJECT(hscale),
+ "format_value", G_CALLBACK (format_value), pipeline);
+
+ /* do the packing stuff ... */
+ gtk_window_set_default_size (GTK_WINDOW (window), 96, 96);
+ gtk_container_add (GTK_CONTAINER (window), vbox);
+ gtk_container_add (GTK_CONTAINER (vbox), hbox);
+ gtk_box_pack_start (GTK_BOX (hbox), play_button, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (hbox), pause_button, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (hbox), stop_button, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (vbox), hscale, TRUE, TRUE, 2);
+
+ /* connect things ... */
+ g_signal_connect (G_OBJECT (play_button), "clicked", G_CALLBACK (play_cb), pipeline);
+ g_signal_connect (G_OBJECT (pause_button), "clicked", G_CALLBACK (pause_cb), pipeline);
+ g_signal_connect (G_OBJECT (stop_button), "clicked", G_CALLBACK (stop_cb), pipeline);
+ g_signal_connect (G_OBJECT (window), "delete_event", gtk_main_quit, NULL);
+
+ /* show the gui. */
+ gtk_widget_show_all (window);
+
+ gtk_main ();
+
+ //g_mem_chunk_info();
+
+ return 0;
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-01 15:56:36 +0000