seek.c 36.8 KB
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#include <stdlib.h>
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#include <glib.h>
#include <gtk/gtk.h>
#include <gst/gst.h>
#include <string.h>

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static GList *seekable_pads = NULL;
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static GList *rate_pads = NULL;
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static GList *seekable_elements = NULL;
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static GstElement *pipeline;
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static gint64 position;
static gint64 duration;
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static GtkAdjustment *adjustment;
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static GtkWidget *hscale;
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static gboolean stats = FALSE;
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static gboolean elem_seek = FALSE;
static gboolean verbose = FALSE;
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static guint update_id;
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static guint seek_timeout_id = 0;
static gulong changed_id;
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//#define SOURCE "gnomevfssrc"
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#define SOURCE "gnomevfssrc"
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#define ASINK "alsasink"
//#define ASINK "osssink"
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#define VSINK "xvimagesink"
//#define VSINK "ximagesink"
//#define VSINK "aasink"
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//#define VSINK "cacasink"
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#define UPDATE_INTERVAL 500

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/* number of milliseconds to play for after a seek */
#define SCRUB_TIME 250
#define SCRUB

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#define THREAD
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#define PAD_SEEK
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typedef struct
{
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  const gchar *padname;
  GstPad *target;
  GstElement *bin;
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}
dyn_link;
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static GstElement *
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gst_element_factory_make_or_warn (gchar * type, gchar * name)
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{
  GstElement *element = gst_element_factory_make (type, name);

  if (!element) {
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    g_warning ("Failed to create element %s of type %s", name, type);
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  }

  return element;
}

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static void
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dynamic_link (GstPadTemplate * templ, GstPad * newpad, gpointer data)
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{
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  dyn_link *connect = (dyn_link *) data;
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  if (connect->padname == NULL ||
      !strcmp (gst_pad_get_name (newpad), connect->padname)) {
    if (connect->bin)
      gst_bin_add (GST_BIN (pipeline), connect->bin);
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    gst_pad_link (newpad, connect->target);
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    //seekable_pads = g_list_prepend (seekable_pads, newpad);
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    rate_pads = g_list_prepend (rate_pads, newpad);
  }
}

static void
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setup_dynamic_link (GstElement * element, const gchar * padname,
    GstPad * target, GstElement * bin)
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{
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  dyn_link *connect;
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  connect = g_new0 (dyn_link, 1);
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  connect->padname = g_strdup (padname);
  connect->target = target;
  connect->bin = bin;
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  g_signal_connect (G_OBJECT (element), "new_pad", G_CALLBACK (dynamic_link),
      connect);
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}

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static GstElement *
make_mod_pipeline (const gchar * location)
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{
  GstElement *pipeline;
  GstElement *src, *decoder, *audiosink;
  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

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  src = gst_element_factory_make_or_warn (SOURCE, "src");
  decoder = gst_element_factory_make_or_warn ("modplug", "decoder");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "sink");
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  //g_object_set (G_OBJECT (audiosink), "sync", FALSE, NULL);

  g_object_set (G_OBJECT (src), "location", location, NULL);

  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), decoder);
  gst_bin_add (GST_BIN (pipeline), audiosink);

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  gst_element_link (src, decoder);
  gst_element_link (decoder, audiosink);
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  seekable = gst_element_get_pad (decoder, "src");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (decoder, "sink"));

  return pipeline;
}

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static GstElement *
make_dv_pipeline (const gchar * location)
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{
  GstElement *pipeline;
  GstElement *src, *decoder, *audiosink, *videosink;
  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

  src = gst_element_factory_make_or_warn (SOURCE, "src");
  decoder = gst_element_factory_make_or_warn ("dvdec", "decoder");
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  videosink = gst_element_factory_make_or_warn ("ximagesink", "v_sink");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "a_sink");
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  //g_object_set (G_OBJECT (audiosink), "sync", FALSE, NULL);

  g_object_set (G_OBJECT (src), "location", location, NULL);

  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), decoder);
  gst_bin_add (GST_BIN (pipeline), audiosink);
  gst_bin_add (GST_BIN (pipeline), videosink);

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  gst_element_link (src, decoder);
  gst_element_link (decoder, audiosink);
  gst_element_link (decoder, videosink);
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  seekable = gst_element_get_pad (decoder, "video");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
  seekable = gst_element_get_pad (decoder, "audio");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (decoder, "sink"));

  return pipeline;
}

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static GstElement *
make_wav_pipeline (const gchar * location)
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{
  GstElement *pipeline;
  GstElement *src, *decoder, *audiosink;
  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

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  src = gst_element_factory_make_or_warn (SOURCE, "src");
  decoder = gst_element_factory_make_or_warn ("wavparse", "decoder");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "sink");
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  //g_object_set (G_OBJECT (audiosink), "sync", FALSE, NULL);

  g_object_set (G_OBJECT (src), "location", location, NULL);

  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), decoder);
  gst_bin_add (GST_BIN (pipeline), audiosink);

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  gst_element_link (src, decoder);
  gst_element_link (decoder, audiosink);
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  seekable = gst_element_get_pad (decoder, "src");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (decoder, "sink"));

  return pipeline;
}

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static GstElement *
make_flac_pipeline (const gchar * location)
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{
  GstElement *pipeline;
  GstElement *src, *decoder, *audiosink;
  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

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  src = gst_element_factory_make_or_warn (SOURCE, "src");
  decoder = gst_element_factory_make_or_warn ("flacdec", "decoder");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "sink");
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  g_object_set (G_OBJECT (audiosink), "sync", FALSE, NULL);
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  g_object_set (G_OBJECT (src), "location", location, NULL);

  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), decoder);
  gst_bin_add (GST_BIN (pipeline), audiosink);

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  gst_element_link (src, decoder);
  gst_element_link (decoder, audiosink);
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  seekable = gst_element_get_pad (decoder, "src");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (decoder, "sink"));

  return pipeline;
}

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static GstElement *
make_sid_pipeline (const gchar * location)
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{
  GstElement *pipeline;
  GstElement *src, *decoder, *audiosink;
  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

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  src = gst_element_factory_make_or_warn (SOURCE, "src");
  decoder = gst_element_factory_make_or_warn ("siddec", "decoder");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "sink");
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  //g_object_set (G_OBJECT (audiosink), "sync", FALSE, NULL);

  g_object_set (G_OBJECT (src), "location", location, NULL);

  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), decoder);
  gst_bin_add (GST_BIN (pipeline), audiosink);

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  gst_element_link (src, decoder);
  gst_element_link (decoder, audiosink);
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  seekable = gst_element_get_pad (decoder, "src");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (decoder, "sink"));

  return pipeline;
}

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static GstElement *
make_parse_pipeline (const gchar * location)
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{
  GstElement *pipeline;
  GstElement *src, *parser, *fakesink;
  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

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  src = gst_element_factory_make_or_warn (SOURCE, "src");
  parser = gst_element_factory_make_or_warn ("mpegparse", "parse");
  fakesink = gst_element_factory_make_or_warn ("fakesink", "sink");
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  g_object_set (G_OBJECT (fakesink), "silent", TRUE, NULL);
  g_object_set (G_OBJECT (fakesink), "sync", TRUE, NULL);
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  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);

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  gst_element_link (src, parser);
  gst_element_link (parser, fakesink);
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  seekable = gst_element_get_pad (parser, "src");
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  seekable_pads = g_list_prepend (seekable_pads, seekable);
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  rate_pads = g_list_prepend (rate_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (parser, "sink"));

  return pipeline;
}

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static GstElement *
make_vorbis_pipeline (const gchar * location)
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{
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  GstElement *pipeline, *audio_bin;
  GstElement *src, *demux, *decoder, *convert, *audiosink;
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  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

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  src = gst_element_factory_make_or_warn (SOURCE, "src");
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  demux = gst_element_factory_make_or_warn ("oggdemux", "demux");
  decoder = gst_element_factory_make_or_warn ("vorbisdec", "decoder");
  convert = gst_element_factory_make_or_warn ("audioconvert", "convert");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "sink");
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  g_object_set (G_OBJECT (audiosink), "sync", TRUE, NULL);
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  g_object_set (G_OBJECT (src), "location", location, NULL);

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  audio_bin = gst_bin_new ("a_decoder_bin");

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  gst_bin_add (GST_BIN (pipeline), src);
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  gst_bin_add (GST_BIN (pipeline), demux);
  gst_bin_add (GST_BIN (audio_bin), decoder);
  gst_bin_add (GST_BIN (audio_bin), convert);
  gst_bin_add (GST_BIN (audio_bin), audiosink);
  gst_bin_add (GST_BIN (pipeline), audio_bin);
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  gst_element_link (src, demux);
  gst_element_link (decoder, convert);
  gst_element_link (convert, audiosink);

  setup_dynamic_link (demux, NULL, gst_element_get_pad (decoder, "sink"), NULL);

  seekable = gst_element_get_pad (decoder, "src");
  seekable_pads = g_list_prepend (seekable_pads, 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_theora_pipeline (const gchar * location)
{
  GstElement *pipeline, *video_bin;
  GstElement *src, *demux, *decoder, *convert, *videosink;
  GstElement *queue;
  GstPad *seekable;

  pipeline = gst_pipeline_new ("app");

  src = gst_element_factory_make_or_warn (SOURCE, "src");
  demux = gst_element_factory_make_or_warn ("oggdemux", "demux");
  queue = gst_element_factory_make_or_warn ("queue", "queue");
  decoder = gst_element_factory_make_or_warn ("theoradec", "decoder");
  convert = gst_element_factory_make_or_warn ("ffmpegcolorspace", "convert");
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  videosink = gst_element_factory_make_or_warn (VSINK, "sink");
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  g_object_set (G_OBJECT (src), "location", location, NULL);

  video_bin = gst_bin_new ("v_decoder_bin");

  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), demux);
  gst_bin_add (GST_BIN (pipeline), queue);
  gst_bin_add (GST_BIN (video_bin), decoder);
  gst_bin_add (GST_BIN (video_bin), convert);
  gst_bin_add (GST_BIN (video_bin), videosink);
  gst_bin_add (GST_BIN (pipeline), video_bin);

  gst_element_link (src, demux);
  gst_element_link (queue, decoder);
  gst_element_link (decoder, convert);
  gst_element_link (convert, videosink);

  setup_dynamic_link (demux, NULL, gst_element_get_pad (queue, "sink"), NULL);
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  seekable = gst_element_get_pad (decoder, "src");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (decoder, "sink"));

  return pipeline;
}

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static GstElement *
make_vorbis_theora_pipeline (const gchar * location)
{
  GstElement *pipeline, *audio_bin, *video_bin;
  GstElement *src, *demux, *a_decoder, *a_convert, *v_decoder, *v_convert;
  GstElement *audiosink, *videosink;
  GstElement *a_queue, *v_queue;
  GstPad *seekable;

  pipeline = gst_pipeline_new ("app");

  src = gst_element_factory_make_or_warn (SOURCE, "src");
  g_object_set (G_OBJECT (src), "location", location, NULL);

  demux = gst_element_factory_make_or_warn ("oggdemux", "demux");

  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), demux);
  gst_element_link (src, demux);

  audio_bin = gst_bin_new ("a_decoder_bin");
  a_queue = gst_element_factory_make_or_warn ("queue", "a_queue");
  a_decoder = gst_element_factory_make_or_warn ("vorbisdec", "a_dec");
  a_convert = gst_element_factory_make_or_warn ("audioconvert", "a_convert");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "a_sink");
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  gst_bin_add (GST_BIN (pipeline), audio_bin);
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  gst_bin_add (GST_BIN (audio_bin), a_queue);
  gst_bin_add (GST_BIN (audio_bin), a_decoder);
  gst_bin_add (GST_BIN (audio_bin), a_convert);
  gst_bin_add (GST_BIN (audio_bin), audiosink);

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  gst_element_link (a_queue, a_decoder);
  gst_element_link (a_decoder, a_convert);
  gst_element_link (a_convert, audiosink);
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  gst_element_add_ghost_pad (audio_bin, gst_element_get_pad (a_queue, "sink"),
      "sink");

  setup_dynamic_link (demux, NULL, gst_element_get_pad (audio_bin, "sink"),
      NULL);
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  video_bin = gst_bin_new ("v_decoder_bin");
  v_queue = gst_element_factory_make_or_warn ("queue", "v_queue");
  v_decoder = gst_element_factory_make_or_warn ("theoradec", "v_dec");
  v_convert =
      gst_element_factory_make_or_warn ("ffmpegcolorspace", "v_convert");
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  videosink = gst_element_factory_make_or_warn (VSINK, "v_sink");
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  gst_bin_add (GST_BIN (pipeline), video_bin);
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  gst_bin_add (GST_BIN (video_bin), v_queue);
  gst_bin_add (GST_BIN (video_bin), v_decoder);
  gst_bin_add (GST_BIN (video_bin), v_convert);
  gst_bin_add (GST_BIN (video_bin), videosink);

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  gst_element_link_many (v_queue, v_decoder, v_convert, videosink, NULL);
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  gst_element_add_ghost_pad (video_bin, gst_element_get_pad (v_queue, "sink"),
      "sink");

  setup_dynamic_link (demux, NULL, gst_element_get_pad (video_bin, "sink"),
      NULL);
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  seekable = gst_element_get_pad (a_decoder, "src");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
  rate_pads =
      g_list_prepend (rate_pads, gst_element_get_pad (a_decoder, "sink"));

  return pipeline;
}

static GstElement *
make_avi_msmpeg4v3_mp3_pipeline (const gchar * location)
{
  GstElement *pipeline, *audio_bin, *video_bin;
  GstElement *src, *demux, *a_decoder, *a_convert, *v_decoder, *v_convert;
  GstElement *audiosink, *videosink;
  GstElement *a_queue, *v_queue;
  GstPad *seekable;

  pipeline = gst_pipeline_new ("app");

  src = gst_element_factory_make_or_warn (SOURCE, "src");
  g_object_set (G_OBJECT (src), "location", location, NULL);

  demux = gst_element_factory_make_or_warn ("avidemux", "demux");

  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), demux);
  gst_element_link (src, demux);

  audio_bin = gst_bin_new ("a_decoder_bin");
  a_queue = gst_element_factory_make_or_warn ("queue", "a_queue");
  a_decoder = gst_element_factory_make_or_warn ("mad", "a_dec");
  a_convert = gst_element_factory_make_or_warn ("audioconvert", "a_convert");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "a_sink");
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  gst_element_link (a_queue, a_decoder);
  gst_element_link (a_decoder, a_convert);
  gst_element_link (a_convert, audiosink);

  gst_bin_add (GST_BIN (audio_bin), a_queue);
  gst_bin_add (GST_BIN (audio_bin), a_decoder);
  gst_bin_add (GST_BIN (audio_bin), a_convert);
  gst_bin_add (GST_BIN (audio_bin), audiosink);

  gst_bin_add (GST_BIN (pipeline), audio_bin);

  setup_dynamic_link (demux, NULL, gst_element_get_pad (a_queue, "sink"), NULL);

  video_bin = gst_bin_new ("v_decoder_bin");
  v_queue = gst_element_factory_make_or_warn ("queue", "v_queue");
  v_decoder = gst_element_factory_make_or_warn ("ffdec_msmpeg4", "v_dec");
  v_convert =
      gst_element_factory_make_or_warn ("ffmpegcolorspace", "v_convert");
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  videosink = gst_element_factory_make_or_warn (VSINK, "v_sink");
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  gst_element_link_many (v_queue, v_decoder, v_convert, videosink, NULL);

  gst_bin_add (GST_BIN (video_bin), v_queue);
  gst_bin_add (GST_BIN (video_bin), v_decoder);
  gst_bin_add (GST_BIN (video_bin), v_convert);
  gst_bin_add (GST_BIN (video_bin), videosink);

  gst_bin_add (GST_BIN (pipeline), video_bin);

  setup_dynamic_link (demux, NULL, gst_element_get_pad (v_queue, "sink"), NULL);

  seekable = gst_element_get_pad (a_decoder, "src");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
  rate_pads =
      g_list_prepend (rate_pads, gst_element_get_pad (a_decoder, "sink"));

  return pipeline;
}

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static GstElement *
make_mp3_pipeline (const gchar * location)
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{
  GstElement *pipeline;
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  GstElement *src, *decoder, *osssink, *queue;
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  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

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  src = gst_element_factory_make_or_warn (SOURCE, "src");
  decoder = gst_element_factory_make_or_warn ("mad", "dec");
  queue = gst_element_factory_make_or_warn ("queue", "queue");
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  osssink = gst_element_factory_make_or_warn (ASINK, "sink");
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  seekable_elements = g_list_prepend (seekable_elements, osssink);
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  g_object_set (G_OBJECT (src), "location", location, NULL);
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  g_object_set (G_OBJECT (osssink), "fragment", 0x00180008, NULL);
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  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), decoder);
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  gst_bin_add (GST_BIN (pipeline), queue);
  gst_bin_add (GST_BIN (pipeline), osssink);
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  gst_element_link (src, decoder);
  gst_element_link (decoder, queue);
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  gst_element_link (queue, osssink);
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  seekable = gst_element_get_pad (queue, "src");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
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  rate_pads = g_list_prepend (rate_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (decoder, "sink"));

  return pipeline;
}

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static GstElement *
make_avi_pipeline (const gchar * location)
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{
  GstElement *pipeline, *audio_bin, *video_bin;
  GstElement *src, *demux, *a_decoder, *v_decoder, *audiosink, *videosink;
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  GstElement *a_queue = NULL, *v_queue = NULL;
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  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

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  src = gst_element_factory_make_or_warn (SOURCE, "src");
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  g_object_set (G_OBJECT (src), "location", location, NULL);

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  demux = gst_element_factory_make_or_warn ("avidemux", "demux");
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  seekable_elements = g_list_prepend (seekable_elements, demux);
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  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), demux);
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  gst_element_link (src, demux);
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  audio_bin = gst_bin_new ("a_decoder_bin");
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  a_decoder = gst_element_factory_make_or_warn ("mad", "a_dec");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "a_sink");
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  //g_object_set (G_OBJECT (audiosink), "fragment", 0x00180008, NULL);
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  a_queue = gst_element_factory_make_or_warn ("queue", "a_queue");
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  gst_element_link (a_decoder, a_queue);
  gst_element_link (a_queue, audiosink);
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  gst_bin_add (GST_BIN (audio_bin), a_decoder);
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  gst_bin_add (GST_BIN (audio_bin), a_queue);
  gst_bin_add (GST_BIN (audio_bin), audiosink);
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  gst_element_set_state (audio_bin, GST_STATE_PAUSED);
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  setup_dynamic_link (demux, "audio_00", gst_element_get_pad (a_decoder,
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          "sink"), audio_bin);
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  seekable = gst_element_get_pad (a_queue, "src");
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  seekable_pads = g_list_prepend (seekable_pads, seekable);
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  rate_pads = g_list_prepend (rate_pads, seekable);
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  rate_pads =
      g_list_prepend (rate_pads, gst_element_get_pad (a_decoder, "sink"));
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  video_bin = gst_bin_new ("v_decoder_bin");
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  //v_decoder = gst_element_factory_make_or_warn ("identity", "v_dec");
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  //v_decoder = gst_element_factory_make_or_warn ("windec", "v_dec");
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  v_decoder = gst_element_factory_make_or_warn ("ffmpegdecall", "v_dec");
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  videosink = gst_element_factory_make_or_warn ("ximagesink", "v_sink");
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  //videosink = gst_element_factory_make_or_warn ("fakesink", "v_sink");
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  //g_object_set (G_OBJECT (videosink), "sync", TRUE, NULL);
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  v_queue = gst_element_factory_make_or_warn ("queue", "v_queue");
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  //g_object_set (G_OBJECT (v_queue), "max_level", 10, NULL);
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  gst_element_link (v_decoder, v_queue);
  gst_element_link (v_queue, videosink);
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  gst_bin_add (GST_BIN (video_bin), v_decoder);
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  gst_bin_add (GST_BIN (video_bin), v_queue);
  gst_bin_add (GST_BIN (video_bin), videosink);
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  gst_element_set_state (video_bin, GST_STATE_PAUSED);
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  setup_dynamic_link (demux, "video_00", gst_element_get_pad (v_decoder,
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          "sink"), video_bin);
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  seekable = gst_element_get_pad (v_queue, "src");
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  seekable_pads = g_list_prepend (seekable_pads, seekable);
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  rate_pads = g_list_prepend (rate_pads, seekable);
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  rate_pads =
      g_list_prepend (rate_pads, gst_element_get_pad (v_decoder, "sink"));
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  return pipeline;
}

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static GstElement *
make_mpeg_pipeline (const gchar * location)
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{
  GstElement *pipeline, *audio_bin, *video_bin;
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  GstElement *src, *demux, *a_decoder, *v_decoder, *v_filter;
  GstElement *audiosink, *videosink;
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  GstElement *a_queue, *v_queue;
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  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

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  src = gst_element_factory_make_or_warn (SOURCE, "src");
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  g_object_set (G_OBJECT (src), "location", location, NULL);

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  demux = gst_element_factory_make_or_warn ("mpegdemux", "demux");
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  g_object_set (G_OBJECT (demux), "sync", FALSE, NULL);
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  seekable_elements = g_list_prepend (seekable_elements, demux);

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  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), demux);
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  gst_element_link (src, demux);
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  audio_bin = gst_bin_new ("a_decoder_bin");
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  a_decoder = gst_element_factory_make_or_warn ("mad", "a_dec");
  a_queue = gst_element_factory_make_or_warn ("queue", "a_queue");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "a_sink");
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  g_object_set (G_OBJECT (audiosink), "fragment", 0x00180008, NULL);
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  gst_element_link (a_decoder, a_queue);
  gst_element_link (a_queue, audiosink);
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  gst_bin_add (GST_BIN (audio_bin), a_decoder);
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  gst_bin_add (GST_BIN (audio_bin), a_queue);
  gst_bin_add (GST_BIN (audio_bin), audiosink);
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  setup_dynamic_link (demux, "audio_00", gst_element_get_pad (a_decoder,
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          "sink"), audio_bin);
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  seekable = gst_element_get_pad (a_queue, "src");
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  seekable_pads = g_list_prepend (seekable_pads, seekable);
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  rate_pads = g_list_prepend (rate_pads, seekable);
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  rate_pads =
      g_list_prepend (rate_pads, gst_element_get_pad (a_decoder, "sink"));
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  video_bin = gst_bin_new ("v_decoder_bin");
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  v_decoder = gst_element_factory_make_or_warn ("mpeg2dec", "v_dec");
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  //g_object_set (G_OBJECT (video_thread), "priority", 2, NULL);
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  v_queue = gst_element_factory_make_or_warn ("queue", "v_queue");
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  v_filter = gst_element_factory_make_or_warn ("ffmpegcolorspace", "v_filter");
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  videosink = gst_element_factory_make_or_warn ("ximagesink", "v_sink");
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  gst_element_link_many (v_decoder, v_queue, v_filter, NULL);
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  gst_element_link (v_filter, videosink);
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  gst_bin_add_many (GST_BIN (video_bin), v_decoder, NULL);
  gst_bin_add_many (GST_BIN (video_bin), v_queue, v_filter, videosink, NULL);
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  setup_dynamic_link (demux, "video_00", gst_element_get_pad (v_decoder,
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          "sink"), video_bin);
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  seekable = gst_element_get_pad (v_queue, "src");
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  seekable_pads = g_list_prepend (seekable_pads, seekable);
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  rate_pads = g_list_prepend (rate_pads, seekable);
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  rate_pads =
      g_list_prepend (rate_pads, gst_element_get_pad (v_decoder, "sink"));
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  return pipeline;
}

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static GstElement *
make_mpegnt_pipeline (const gchar * location)
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{
  GstElement *pipeline, *audio_bin, *video_bin;
  GstElement *src, *demux, *a_decoder, *v_decoder, *v_filter;
  GstElement *audiosink, *videosink;
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  GstElement *a_queue;
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  GstPad *seekable;
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  pipeline = gst_pipeline_new ("app");

  src = gst_element_factory_make_or_warn (SOURCE, "src");
  g_object_set (G_OBJECT (src), "location", location, NULL);

  demux = gst_element_factory_make_or_warn ("mpegdemux", "demux");
  //g_object_set (G_OBJECT (demux), "sync", TRUE, NULL);

  seekable_elements = g_list_prepend (seekable_elements, demux);

  gst_bin_add (GST_BIN (pipeline), src);
  gst_bin_add (GST_BIN (pipeline), demux);
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  gst_element_link (src, demux);
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  audio_bin = gst_bin_new ("a_decoder_bin");
  a_decoder = gst_element_factory_make_or_warn ("mad", "a_dec");
  a_queue = gst_element_factory_make_or_warn ("queue", "a_queue");
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  audiosink = gst_element_factory_make_or_warn (ASINK, "a_sink");
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  //g_object_set (G_OBJECT (audiosink), "fragment", 0x00180008, NULL);
  g_object_set (G_OBJECT (audiosink), "sync", FALSE, NULL);
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  gst_element_link (a_decoder, a_queue);
  gst_element_link (a_queue, audiosink);
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  gst_bin_add (GST_BIN (audio_bin), a_decoder);
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  gst_bin_add (GST_BIN (audio_bin), a_queue);
  gst_bin_add (GST_BIN (audio_bin), audiosink);
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  setup_dynamic_link (demux, "audio_00", gst_element_get_pad (a_decoder,
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          "sink"), audio_bin);
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  seekable = gst_element_get_pad (a_queue, "src");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
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  rate_pads =
      g_list_prepend (rate_pads, gst_element_get_pad (a_decoder, "sink"));
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  video_bin = gst_bin_new ("v_decoder_bin");
  v_decoder = gst_element_factory_make_or_warn ("mpeg2dec", "v_dec");
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  v_filter = gst_element_factory_make_or_warn ("ffmpegcolorspace", "v_filter");
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  videosink = gst_element_factory_make_or_warn ("ximagesink", "v_sink");
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  gst_element_link_many (v_decoder, v_filter, videosink, NULL);
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  gst_bin_add_many (GST_BIN (video_bin), v_decoder, v_filter, videosink, NULL);

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  setup_dynamic_link (demux, "video_00", gst_element_get_pad (v_decoder,
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          "sink"), video_bin);
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  seekable = gst_element_get_pad (v_decoder, "src");
  seekable_pads = g_list_prepend (seekable_pads, seekable);
  rate_pads = g_list_prepend (rate_pads, seekable);
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  rate_pads =
      g_list_prepend (rate_pads, gst_element_get_pad (v_decoder, "sink"));
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  return pipeline;
}

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static GstElement *
make_playerbin_pipeline (const gchar * location)
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{
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  GstElement *player;
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  player = gst_element_factory_make ("playbin", "player");
  g_assert (player);

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  g_object_set (G_OBJECT (player), "uri", location, NULL);
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  seekable_elements = g_list_prepend (seekable_elements, player);

  /* force element seeking on this pipeline */
  elem_seek = TRUE;

  return player;
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}

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static gchar *
format_value (GtkScale * scale, gdouble value)
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{
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  gint64 real;
  gint64 seconds;
  gint64 subseconds;

  real = value * duration / 100;
  seconds = (gint64) real / GST_SECOND;
  subseconds = (gint64) real / (GST_SECOND / 100);
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  return g_strdup_printf ("%02" G_GINT64_FORMAT ":%02" G_GINT64_FORMAT ":%02"
      G_GINT64_FORMAT, seconds / 60, seconds % 60, subseconds % 100);
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}

typedef struct
{
  const gchar *name;
  const GstFormat format;
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}
seek_format;
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static seek_format seek_formats[] = {
  {"tim", GST_FORMAT_TIME},
  {"byt", GST_FORMAT_BYTES},
  {"buf", GST_FORMAT_BUFFERS},
  {"def", GST_FORMAT_DEFAULT},
  {NULL, 0},
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};

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;

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      if (gst_pad_query_convert (pad, GST_FORMAT_TIME, GST_SECOND, &format,
              &value)) {
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        g_print ("%s %13" G_GINT64_FORMAT " | ", seek_formats[i].name, value);
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      } else {
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        g_print ("%s %13.13s | ", seek_formats[i].name, "*NA*");
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      }

      i++;
    }
    g_print (" %s:%s\n", GST_DEBUG_PAD_NAME (pad));

    walk = g_list_next (walk);
  }
}

G_GNUC_UNUSED static void
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query_positions_elems ()
{
  GList *walk = seekable_elements;

  while (walk) {
    GstElement *element = GST_ELEMENT (walk->data);
    gint i = 0;

    g_print ("positions %8.8s: ", GST_ELEMENT_NAME (element));
    while (seek_formats[i].name) {
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      gint64 position, total;
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      GstFormat format;

      format = seek_formats[i].format;
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      if (gst_element_query_position (element, &format, &position, &total)) {
        g_print ("%s %13" G_GINT64_FORMAT " / %13" G_GINT64_FORMAT " | ",
            seek_formats[i].name, position, total);
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      } else {
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        g_print ("%s %13.13s / %13.13s | ", seek_formats[i].name, "*NA*",
            "*NA*");
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      }
      i++;
    }
    g_print (" %s\n", GST_ELEMENT_NAME (element));

    walk = g_list_next (walk);
  }
}

G_GNUC_UNUSED static void
query_positions_pads ()
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{
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  GList *walk = seekable_pads;

  while (walk) {
    GstPad *pad = GST_PAD (walk->data);
    gint i = 0;

    g_print ("positions %8.8s: ", GST_PAD_NAME (pad));
    while (seek_formats[i].name) {
      GstFormat format;
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      gint64 position, total;
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      format = seek_formats[i].format;
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      if (gst_pad_query_position (pad, &format, &position, &total)) {
        g_print ("%s %13" G_GINT64_FORMAT " / %13" G_GINT64_FORMAT " | ",
            seek_formats[i].name, position, total);
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      } else {
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        g_print ("%s %13.13s / %13.13s | ", seek_formats[i].name, "*NA*",
            "*NA*");
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      }
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      i++;
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    }
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    g_print (" %s:%s\n", GST_DEBUG_PAD_NAME (pad));

    walk = g_list_next (walk);
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  }
}

static gboolean
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update_scale (gpointer data)
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{
  GstClock *clock;
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  GstFormat format;
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  position = 0;
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  duration = 0;
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  clock = gst_pipeline_get_clock (GST_PIPELINE (pipeline));
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  format = GST_FORMAT_TIME;

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  if (elem_seek) {
    if (seekable_elements) {
      GstElement *element = GST_ELEMENT (seekable_elements->data);
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      gst_element_query_position (element, &format, &position, &duration);
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    }
  } else {
    if (seekable_pads) {
      GstPad *pad = GST_PAD (seekable_pads->data);

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      gst_pad_query_position (pad, &format, &position, &duration);
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    }
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  }