diff options
Diffstat (limited to 'examples/seeking/cdparanoia.c')
| -rw-r--r-- | examples/seeking/cdparanoia.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/examples/seeking/cdparanoia.c b/examples/seeking/cdparanoia.c new file mode 100644 index 00000000..b735b4ab --- /dev/null +++ b/examples/seeking/cdparanoia.c @@ -0,0 +1,168 @@ +#include <stdlib.h> +#include <gst/gst.h> +#include <string.h> + +static void +get_track_info (GstElement *cdparanoia) +{ + GstFormat track_format; + gint64 total_tracks, total_time; + GstPad *pad; + const GstFormat *formats; + gint i; + gint64 time_count = 0; + + 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); + + /* we loop over all supported formats and report the total + * number of them */ + while (*formats) { + const GstFormatDefinition *definition; + gint64 total; + gboolean res; + + definition = gst_format_get_details (*formats); + + res = gst_pad_query (pad, GST_PAD_QUERY_TOTAL, + (GstFormat *)formats, &total); + if (res) { + if (*formats == GST_FORMAT_TIME) + g_print ("%s total: %lld:%lld\n", definition->nick, total/60, total%60); + else + g_print ("%s total: %lld\n", definition->nick, total); + + if (*formats == track_format) + total_tracks = total; + else if (*formats == GST_FORMAT_TIME) + total_time = total; + } + else + g_print ("failed to get %s total\n", definition->nick); + + formats++; + } + + /* then we loop over all the tracks to get more info. + * since pad_convert always works from 0, the time from track 1 needs + * to be substracted from track 2 */ + for (i = 0; i <= total_tracks; i++) { + gint64 time; + gboolean res; + + if (i < total_tracks) { + GstFormat format; + + format = GST_FORMAT_TIME; + res = gst_pad_convert (pad, track_format, i, + &format, &time); + } + else { + time = total_time; + res = TRUE; + } + + if (res) { + /* for the first track (i==0) we wait until we have the + * time of the next track */ + if (i > 0) { + gint64 length = time - time_count; + + g_print ("track %d: %lld:%02lld -> %lld:%02lld, length: %lld:%02lld\n", i-1, + time_count/60, time_count%60, + time/60, time%60, + length/60, length%60); + } + } + else { + g_print ("could not get time for track %d\n", i); + } + + time_count = time; + } +} + +int +main (int argc, char **argv) +{ + GstElement *pipeline; + GstElement *cdparanoia; + GstElement *osssink; + GstPad *pad; + GstFormat track_format; + GstEvent *event; + gint count; + + gst_init (&argc, &argv); + + pipeline = gst_pipeline_new ("pipeline"); + + cdparanoia = gst_element_factory_make ("cdparanoia", "cdparanoia"); + g_assert (cdparanoia); + g_object_set (G_OBJECT (cdparanoia), "paranoia_mode", 0, NULL); + + osssink = gst_element_factory_make ("osssink", "osssink"); + g_assert (osssink); + + gst_bin_add (GST_BIN (pipeline), cdparanoia); + gst_bin_add (GST_BIN (pipeline), osssink); + + gst_element_connect_pads (cdparanoia, "src", osssink, "sink"); + + g_signal_connect (G_OBJECT (pipeline), "deep_notify", + G_CALLBACK (gst_element_default_deep_notify), NULL); + + gst_element_set_state (pipeline, GST_STATE_PAUSED); + + /* now we go into probe mode */ + get_track_info (cdparanoia); + + track_format = gst_format_get_by_nick ("track"); + g_assert (track_format != 0); + + pad = gst_element_get_pad (cdparanoia, "src"); + g_assert (pad); + + g_print ("playing from track 3\n"); + /* seek to track3 */ + event = gst_event_new_seek (track_format | + GST_SEEK_METHOD_SET | + GST_SEEK_FLAG_FLUSH, + 3); + + gst_pad_send_event (pad, event); + gst_element_set_state (pipeline, GST_STATE_PLAYING); + + count = 0; + while (gst_bin_iterate (GST_BIN (pipeline))) { + 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 | + GST_SEEK_METHOD_SET | + GST_SEEK_FLAG_FLUSH, + 3, 4); + gst_pad_send_event (pad, event); + gst_element_set_state (pipeline, GST_STATE_PLAYING); + + count = 0; + while (gst_bin_iterate (GST_BIN (pipeline))) { + if (count++ > 500) + break; + } + + /* shutdown everything again */ + gst_element_set_state (pipeline, GST_STATE_NULL); + + gst_buffer_print_stats(); + gst_event_print_stats(); + + return 0; +} |