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- Show how to do stream position feedback

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Original commit message from CVS:
- Show how to do stream position feedback
- Show how to do some more seeking
This commit is contained in:
Wim Taymans 2002-11-01 00:41:25 +00:00
parent 6e78110edf
commit 2740095646
1 changed files with 68 additions and 15 deletions
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83
examples/seeking/cdparanoia.c
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@ -2,11 +2,52 @@
#include <gst/gst.h>
#include <string.h>
static void
get_position_info (GstElement *cdparanoia)
{
GstFormat track_format;
const GstFormat *formats;
GstPad *pad;
track_format = gst_format_get_by_nick ("track");
g_assert (track_format != 0);
pad = gst_element_get_pad (cdparanoia, "src");
formats = gst_pad_get_formats (pad);
while (*formats) {
const GstFormatDefinition *definition;
GstFormat format;
gint64 position;
gboolean res;
definition = gst_format_get_details (*formats);
format = *formats;
res = gst_pad_query (pad, GST_PAD_QUERY_POSITION,
&format, &position);
if (format == GST_FORMAT_TIME) {
position /= GST_SECOND;
g_print ("%s: %lld:%02lld", definition->nick, position/60, position%60);
}
else {
g_print ("%s: %lld", definition->nick, position);
}
formats++;
if (*formats) {
g_print (", ");
}
}
g_print ("\r");
}
static void
get_track_info (GstElement *cdparanoia)
{
GstFormat track_format;
gint64 total_tracks, total_time;
gint64 total_tracks = 0, total_time = 0;
GstPad *pad;
const GstFormat *formats;
gint i;
@ -23,21 +64,25 @@ get_track_info (GstElement *cdparanoia)
while (*formats) {
const GstFormatDefinition *definition;
gint64 total;
GstFormat format;
gboolean res;
definition = gst_format_get_details (*formats);
format = *formats;
res = gst_pad_query (pad, GST_PAD_QUERY_TOTAL,
(GstFormat *)formats, &total);
&format, &total);
if (res) {
if (*formats == GST_FORMAT_TIME)
g_print ("%s total: %lld:%lld\n", definition->nick, total/60, total%60);
if (format == GST_FORMAT_TIME) {
total /= GST_SECOND;
g_print ("%s total: %lld:%02lld\n", definition->nick, total/60, total%60);
}
else
g_print ("%s total: %lld\n", definition->nick, total);
if (*formats == track_format)
if (format == track_format)
total_tracks = total;
else if (*formats == GST_FORMAT_TIME)
else if (format == GST_FORMAT_TIME)
total_time = total;
}
else
@ -59,6 +104,7 @@ get_track_info (GstElement *cdparanoia)
format = GST_FORMAT_TIME;
res = gst_pad_convert (pad, track_format, i,
&format, &time);
time /= GST_SECOND;
}
else {
time = total_time;
@ -95,6 +141,7 @@ main (int argc, char **argv)
GstFormat track_format;
GstEvent *event;
gint count;
gboolean res;
gst_init (&argc, &argv);
@ -133,30 +180,36 @@ main (int argc, char **argv)
GST_SEEK_FLAG_FLUSH,
3);
gst_pad_send_event (pad, event);
res = gst_pad_send_event (pad, event);
if (!res)
g_warning ("seek failed");
gst_element_set_state (pipeline, GST_STATE_PLAYING);
count = 0;
while (gst_bin_iterate (GST_BIN (pipeline))) {
get_position_info (cdparanoia);
if (count++ > 500)
break;
}
gst_element_set_state (pipeline, GST_STATE_PAUSED);
g_print ("playing track 3 only\n");
/* seek to track3 */
event = gst_event_new_segment_seek (track_format |
g_print ("\nplaying from second 25 to second 29\n");
/* seek to some seconds */
event = gst_event_new_segment_seek (GST_FORMAT_TIME |
GST_SEEK_METHOD_SET |
GST_SEEK_FLAG_FLUSH,
3, 4);
gst_pad_send_event (pad, event);
25 * GST_SECOND, 29 * GST_SECOND);
res = gst_pad_send_event (pad, event);
if (!res)
g_warning ("seek failed");
gst_element_set_state (pipeline, GST_STATE_PLAYING);
count = 0;
while (gst_bin_iterate (GST_BIN (pipeline))) {
if (count++ > 500)
break;
get_position_info (cdparanoia);
}
g_print ("\n");
/* shutdown everything again */
gst_element_set_state (pipeline, GST_STATE_NULL);