Add mpeg transport stream parser written by:

Original commit message from CVS:
* configure.ac:
* gst/mpegtsparse/Makefile.am:
* gst/mpegtsparse/flutspatinfo.c:
* gst/mpegtsparse/flutspatinfo.h:
* gst/mpegtsparse/flutspmtinfo.c:
* gst/mpegtsparse/flutspmtinfo.h:
* gst/mpegtsparse/flutspmtstreaminfo.c:
* gst/mpegtsparse/flutspmtstreaminfo.h:
* gst/mpegtsparse/mpegtspacketizer.c:
* gst/mpegtsparse/mpegtspacketizer.h:
* gst/mpegtsparse/mpegtsparse.c:
* gst/mpegtsparse/mpegtsparse.h:
* gst/mpegtsparse/mpegtsparsemarshal.list:
Add mpeg transport stream parser written by:
Alessandro Decina. Includes a couple of files from the
Fluendo transport stream demuxer that Fluendo have
kindly allowed to be licenced under LGPL also.

1 files changed, 970 insertions, 0 deletions

diff --git a/gst/mpegtsparse/mpegtsparse.c b/gst/mpegtsparse/mpegtsparse.c
new file mode 100644
index 00000000..9d344c27
--- /dev/null
+++ b/gst/mpegtsparse/mpegtsparse.c
@@ -0,0 +1,970 @@
+/*
+ * mpegtsparse.c - 
+ * Copyright (C) 2007 Alessandro Decina
+ * 
+ * Authors:
+ *   Alessandro Decina <alessandro@nnva.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "mpegtsparse.h"
+#include "mpegtsparsemarshal.h"
+#include "flutspatinfo.h"
+#include "flutspmtinfo.h"
+#include "flutspmtstreaminfo.h"
+
+GST_DEBUG_CATEGORY_STATIC (mpegts_parse_debug);
+#define GST_CAT_DEFAULT mpegts_parse_debug
+
+typedef struct _MpegTSParsePad MpegTSParsePad;
+
+typedef struct
+{
+  guint16 pid;
+  guint8 stream_type;
+} MpegTSParseStream;
+
+typedef struct
+{
+  gint program_number;
+  guint16 pmt_pid;
+  GObject *pmt_info;
+  GHashTable *streams;
+  gint patcount;
+  gint selected;
+  gboolean active;
+  MpegTSParsePad *tspad;
+} MpegTSParseProgram;
+
+struct _MpegTSParsePad
+{
+  GstPad *pad;
+
+  /* the program number that the peer wants on this pad */
+  gint program_number;
+  MpegTSParseProgram *program;
+
+  /* set to FALSE before a push and TRUE after */
+  gboolean pushed;
+
+  /* the return of the latest push */
+  GstFlowReturn flow_return;
+};
+
+static GstElementDetails mpegts_parse_details =
+GST_ELEMENT_DETAILS ("MPEG transport stream parser",
+    "Codec/Parser",
+    "Parses MPEG2 transport streams",
+    "Alessandro Decina <alessandro@nnva.org>");
+
+static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/mpegts, " "systemstream = (boolean) true ")
+    );
+
+static GstStaticPadTemplate src_template =
+GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/mpegts, " "systemstream = (boolean) true ")
+    );
+
+static GstStaticPadTemplate program_template =
+GST_STATIC_PAD_TEMPLATE ("program_%d", GST_PAD_SRC,
+    GST_PAD_SOMETIMES,
+    GST_STATIC_CAPS ("video/mpegts, " "systemstream = (boolean) true ")
+    );
+
+enum
+{
+  SIGNAL_PMT,
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum
+{
+  ARG_0,
+  PROP_PROGRAM_NUMBERS,
+  PROP_PAT_INFO
+      /* FILL ME */
+};
+
+static void mpegts_parse_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void mpegts_parse_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+static void mpegts_parse_dispose (GObject * object);
+static void mpegts_parse_finalize (GObject * object);
+
+static MpegTSParsePad *mpegts_parse_create_tspad (MpegTSParse * parse,
+    const gchar * name);
+static void mpegts_parse_destroy_tspad (MpegTSParse * parse,
+    MpegTSParsePad * tspad);
+static GstPad *mpegts_parse_activate_program (MpegTSParse * parse,
+    MpegTSParseProgram * program);
+static void mpegts_parse_free_program (MpegTSParseProgram * program);
+static void mpegts_parse_free_stream (MpegTSParseStream * ptream);
+static void mpegts_parse_reset_selected_programs (MpegTSParse * parse,
+    gchar * programs);
+
+static void mpegts_parse_pad_removed (GstElement * element, GstPad * pad);
+static GstFlowReturn mpegts_parse_chain (GstPad * pad, GstBuffer * buf);
+static gboolean mpegts_parse_sink_event (GstPad * pad, GstEvent * event);
+static GstStateChangeReturn mpegts_parse_change_state (GstElement * element,
+    GstStateChange transition);
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+GST_BOILERPLATE (MpegTSParse, mpegts_parse, GstElement, GST_TYPE_ELEMENT);
+
+static void
+mpegts_parse_base_init (gpointer klass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&program_template));
+
+  gst_element_class_set_details (element_class, &mpegts_parse_details);
+}
+
+static void
+mpegts_parse_class_init (MpegTSParseClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *element_class;
+
+  element_class = GST_ELEMENT_CLASS (klass);
+  element_class->pad_removed = mpegts_parse_pad_removed;
+  element_class->change_state = mpegts_parse_change_state;
+
+  gobject_class = G_OBJECT_CLASS (klass);
+  gobject_class->set_property = mpegts_parse_set_property;
+  gobject_class->get_property = mpegts_parse_get_property;
+  gobject_class->dispose = mpegts_parse_dispose;
+  gobject_class->finalize = mpegts_parse_finalize;
+
+  g_object_class_install_property (gobject_class, PROP_PROGRAM_NUMBERS,
+      g_param_spec_string ("program-numbers",
+          "Program Numbers",
+          "Colon separated list of programs", "", G_PARAM_READWRITE));
+
+  g_object_class_install_property (gobject_class, PROP_PAT_INFO,
+      g_param_spec_value_array ("pat-info",
+          "GValueArray containing GObjects with properties",
+          "Array of GObjects containing information from the TS PAT "
+          "about all programs listed in the current Program Association "
+          "Table (PAT)",
+          g_param_spec_object ("flu-pat-streaminfo", "FluPATStreamInfo",
+              "Fluendo TS Demuxer PAT Stream info object",
+              MPEGTS_TYPE_PAT_INFO, G_PARAM_READABLE), G_PARAM_READABLE));
+
+  signals[SIGNAL_PMT] =
+      g_signal_new ("pmt-info", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
+      G_STRUCT_OFFSET (MpegTSParseClass, pmt_info), NULL, NULL,
+      mpegts_parse_marshal_VOID__INT_OBJECT, G_TYPE_NONE, 2, G_TYPE_INT,
+      MPEGTS_TYPE_PMT_INFO);
+}
+
+static gboolean
+foreach_psi_pid_remove (gpointer key, gpointer value, gpointer data)
+{
+  return TRUE;
+}
+
+static void
+mpegts_parse_reset (MpegTSParse * parse)
+{
+  mpegts_packetizer_clear (parse->packetizer);
+  g_hash_table_foreach_remove (parse->psi_pids, foreach_psi_pid_remove, NULL);
+
+  /* PAT */
+  g_hash_table_insert (parse->psi_pids,
+      GINT_TO_POINTER (0), GINT_TO_POINTER (1));
+
+  /* pmt pids will be added and removed dinamically */
+}
+
+static void
+mpegts_parse_init (MpegTSParse * parse, MpegTSParseClass * klass)
+{
+  parse->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
+  gst_pad_set_chain_function (parse->sinkpad, mpegts_parse_chain);
+  gst_pad_set_event_function (parse->sinkpad, mpegts_parse_sink_event);
+  gst_element_add_pad (GST_ELEMENT (parse), parse->sinkpad);
+
+  parse->srcpad = mpegts_parse_create_tspad (parse, "src")->pad;
+  gst_element_add_pad (GST_ELEMENT (parse), parse->srcpad);
+
+  parse->disposed = FALSE;
+  parse->packetizer = mpegts_packetizer_new ();
+  parse->program_numbers = g_strdup ("");
+  parse->pads_to_add = NULL;
+  parse->programs = g_hash_table_new_full (g_direct_hash, g_direct_equal,
+      NULL, (GDestroyNotify) mpegts_parse_free_program);
+  parse->psi_pids = g_hash_table_new (g_direct_hash, g_direct_equal);
+  mpegts_parse_reset (parse);
+}
+
+static void
+mpegts_parse_dispose (GObject * object)
+{
+  MpegTSParse *parse = GST_MPEGTS_PARSE (object);
+
+  if (!parse->disposed) {
+    g_object_unref (parse->packetizer);
+    parse->disposed = TRUE;
+  }
+
+  if (G_OBJECT_CLASS (parent_class)->dispose)
+    G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+mpegts_parse_finalize (GObject * object)
+{
+  MpegTSParse *parse = GST_MPEGTS_PARSE (object);
+
+  g_free (parse->program_numbers);
+  if (parse->pat_info)
+    g_value_array_free (parse->pat_info);
+  g_hash_table_destroy (parse->programs);
+  g_hash_table_destroy (parse->psi_pids);
+
+  if (G_OBJECT_CLASS (parent_class)->finalize)
+    G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+mpegts_parse_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  MpegTSParse *parse = GST_MPEGTS_PARSE (object);
+
+  switch (prop_id) {
+    case PROP_PROGRAM_NUMBERS:
+      mpegts_parse_reset_selected_programs (parse, g_value_dup_string (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+  }
+}
+
+static void
+mpegts_parse_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  MpegTSParse *parse = GST_MPEGTS_PARSE (object);
+
+  switch (prop_id) {
+    case PROP_PROGRAM_NUMBERS:
+      g_value_set_string (value, parse->program_numbers);
+      break;
+    case PROP_PAT_INFO:
+      g_value_set_boxed (value, parse->pat_info);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+  }
+}
+
+static MpegTSParseProgram *
+mpegts_parse_add_program (MpegTSParse * parse,
+    gint program_number, guint16 pmt_pid)
+{
+  MpegTSParseProgram *program;
+
+  program = g_new0 (MpegTSParseProgram, 1);
+  program->program_number = program_number;
+  program->pmt_pid = pmt_pid;
+  program->streams = g_hash_table_new_full (g_direct_hash, g_direct_equal,
+      NULL, (GDestroyNotify) mpegts_parse_free_stream);
+  program->patcount = 1;
+  program->selected = 0;
+  program->active = FALSE;
+
+  g_hash_table_insert (parse->programs,
+      GINT_TO_POINTER (program_number), program);
+
+  return program;
+}
+
+static MpegTSParseProgram *
+mpegts_parse_get_program (MpegTSParse * parse, gint program_number)
+{
+  MpegTSParseProgram *program;
+
+  program = (MpegTSParseProgram *) g_hash_table_lookup (parse->programs,
+      GINT_TO_POINTER ((gint) program_number));
+
+  return program;
+}
+
+static GstPad *
+mpegts_parse_activate_program (MpegTSParse * parse,
+    MpegTSParseProgram * program)
+{
+  MpegTSParsePad *tspad;
+  gchar *pad_name;
+
+  pad_name = g_strdup_printf ("program_%d", program->program_number);
+
+  tspad = mpegts_parse_create_tspad (parse, pad_name);
+  tspad->program_number = program->program_number;
+  tspad->program = program;
+  program->tspad = tspad;
+  g_free (pad_name);
+  gst_pad_set_active (tspad->pad, TRUE);
+  program->active = TRUE;
+
+  return tspad->pad;
+}
+
+static GstPad *
+mpegts_parse_deactivate_program (MpegTSParse * parse,
+    MpegTSParseProgram * program)
+{
+  MpegTSParsePad *tspad;
+
+  tspad = program->tspad;
+  gst_pad_set_active (tspad->pad, FALSE);
+  program->active = FALSE;
+
+  /* tspad will be destroyed in GstElementClass::pad_removed */
+
+  return tspad->pad;
+}
+
+static void
+mpegts_parse_free_program (MpegTSParseProgram * program)
+{
+  if (program->pmt_info)
+    g_object_unref (program->pmt_info);
+
+  g_hash_table_destroy (program->streams);
+
+  g_free (program);
+}
+
+static void
+mpegts_parse_remove_program (MpegTSParse * parse, gint program_number)
+{
+  g_hash_table_remove (parse->programs, GINT_TO_POINTER (program_number));
+}
+
+static void
+mpegts_parse_sync_program_pads (MpegTSParse * parse,
+    GList * to_add, GList * to_remove)
+{
+  GList *walk;
+
+  for (walk = to_remove; walk; walk = walk->next)
+    gst_element_remove_pad (GST_ELEMENT (parse), GST_PAD (walk->data));
+
+  for (walk = to_add; walk; walk = walk->next)
+    gst_element_add_pad (GST_ELEMENT (parse), GST_PAD (walk->data));
+
+  if (to_add)
+    g_list_free (to_add);
+
+  if (to_remove)
+    g_list_free (to_remove);
+}
+
+
+static MpegTSParseStream *
+mpegts_parse_program_add_stream (MpegTSParse * parse,
+    MpegTSParseProgram * program, guint16 pid, guint8 stream_type)
+{
+  MpegTSParseStream *stream;
+
+  stream = g_new0 (MpegTSParseStream, 1);
+  stream->pid = pid;
+  stream->stream_type = stream_type;
+
+  g_hash_table_insert (program->streams, GINT_TO_POINTER ((gint) pid), stream);
+
+  return stream;
+}
+
+static void
+foreach_program_activate_or_deactivate (gpointer key, gpointer value,
+    gpointer data)
+{
+  MpegTSParse *parse = GST_MPEGTS_PARSE (data);
+  MpegTSParseProgram *program = (MpegTSParseProgram *) value;
+
+  /* at this point selected programs have program->selected == 2,
+   * unselected programs thay may have to be deactivated have selected == 1 and
+   * unselected inactive programs have selected == 0 */
+
+  switch (--program->selected) {
+    case 1:
+      /* selected */
+      if (!program->active && program->pmt_pid != G_MAXUINT16)
+        parse->pads_to_add = g_list_append (parse->pads_to_add,
+            mpegts_parse_activate_program (parse, program));
+      break;
+    case 0:
+      /* unselected */
+      if (program->active)
+        parse->pads_to_remove = g_list_append (parse->pads_to_remove,
+            mpegts_parse_deactivate_program (parse, program));
+      break;
+    case -1:
+      /* was already unselected */
+      program->selected = 0;
+      break;
+    default:
+      g_return_if_reached ();
+  }
+}
+
+static void
+mpegts_parse_reset_selected_programs (MpegTSParse * parse,
+    gchar * program_numbers)
+{
+  GList *pads_to_add = NULL;
+  GList *pads_to_remove = NULL;
+
+  GST_OBJECT_LOCK (parse);
+  if (parse->program_numbers)
+    g_free (parse->program_numbers);
+
+  parse->program_numbers = program_numbers;
+
+  if (*parse->program_numbers != '\0') {
+    gint program_number;
+    MpegTSParseProgram *program;
+    gchar **progs, **walk;
+
+    progs = g_strsplit (parse->program_numbers, ":", 0);
+
+    walk = progs;
+    while (*walk != NULL) {
+      program_number = strtol (*walk, NULL, 0);
+      program = mpegts_parse_get_program (parse, program_number);
+      if (program == NULL)
+        /* create the program, it will get activated once we get a PMT for it */
+        program = mpegts_parse_add_program (parse, program_number, G_MAXUINT16);
+
+      program->selected = 2;
+      ++walk;
+    }
+    g_strfreev (progs);
+  }
+
+  g_hash_table_foreach (parse->programs,
+      foreach_program_activate_or_deactivate, parse);
+
+  pads_to_add = parse->pads_to_add;
+  parse->pads_to_add = NULL;
+  pads_to_remove = parse->pads_to_remove;
+  parse->pads_to_remove = NULL;
+  GST_OBJECT_UNLOCK (parse);
+
+  mpegts_parse_sync_program_pads (parse, pads_to_add, pads_to_remove);
+}
+
+static void
+mpegts_parse_free_stream (MpegTSParseStream * stream)
+{
+  g_free (stream);
+}
+
+static void
+mpegts_parse_program_remove_stream (MpegTSParse * parse,
+    MpegTSParseProgram * program, guint16 pid)
+{
+  g_hash_table_remove (program->streams, GINT_TO_POINTER ((gint) pid));
+}
+
+static MpegTSParsePad *
+mpegts_parse_create_tspad (MpegTSParse * parse, const gchar * pad_name)
+{
+  GstPad *pad;
+  MpegTSParsePad *tspad;
+
+  pad = gst_pad_new_from_static_template (&program_template, pad_name);
+
+  /* create our wrapper */
+  tspad = g_new0 (MpegTSParsePad, 1);
+  tspad->pad = pad;
+  tspad->program_number = -1;
+  tspad->program = NULL;
+  tspad->pushed = FALSE;
+  tspad->flow_return = GST_FLOW_NOT_LINKED;
+  gst_pad_set_element_private (pad, tspad);
+
+  return tspad;
+}
+
+static void
+mpegts_parse_destroy_tspad (MpegTSParse * parse, MpegTSParsePad * tspad)
+{
+  /* free the wrapper */
+  g_free (tspad);
+}
+
+static void
+mpegts_parse_pad_removed (GstElement * element, GstPad * pad)
+{
+  MpegTSParsePad *tspad;
+  MpegTSParse *parse = GST_MPEGTS_PARSE (element);
+
+  if (gst_pad_get_direction (pad) == GST_PAD_SINK)
+    return;
+
+  tspad = (MpegTSParsePad *) gst_pad_get_element_private (pad);
+  mpegts_parse_destroy_tspad (parse, tspad);
+}
+
+static GstFlowReturn
+mpegts_parse_tspad_push (MpegTSParse * parse, MpegTSParsePad * tspad,
+    guint16 pid, GstBuffer * buffer)
+{
+  GstFlowReturn ret = GST_FLOW_NOT_LINKED;
+  GHashTable *pad_pids = NULL;
+  guint16 pmt_pid = G_MAXUINT16;
+
+  if (tspad->program_number != -1) {
+    if (tspad->program) {
+      pad_pids = tspad->program->streams;
+      pmt_pid = tspad->program->pmt_pid;
+    } else {
+      /* there's a program filter on the pad but the PMT for the program has not
+       * been parsed yet, ignore the pad until we get a PMT */
+      gst_buffer_unref (buffer);
+      ret = GST_FLOW_OK;
+      goto out;
+    }
+  }
+
+  /* FIXME: send all the SI pids not only PAT and PMT */
+  if (pad_pids == NULL || pid == 0 || pid == pmt_pid ||
+      g_hash_table_lookup (pad_pids, GINT_TO_POINTER ((gint) pid)) != NULL) {
+    /* push if there's no filter or if the pid is in the filter */
+    ret = gst_pad_push (tspad->pad, buffer);
+  } else {
+    gst_buffer_unref (buffer);
+    /* caps don't include this pid */
+    if (gst_pad_is_linked (tspad->pad))
+      ret = GST_FLOW_OK;
+  }
+
+out:
+  return ret;
+}
+
+static void
+pad_clear_for_push (GstPad * pad, MpegTSParse * parse)
+{
+  MpegTSParsePad *tspad = (MpegTSParsePad *) gst_pad_get_element_private (pad);
+
+  tspad->flow_return = GST_FLOW_NOT_LINKED;
+  tspad->pushed = FALSE;
+}
+
+static GstFlowReturn
+mpegts_parse_push (MpegTSParse * parse, MpegTSPacketizerPacket * packet)
+{
+  GstIterator *iterator;
+  gboolean done = FALSE;
+  gpointer pad = NULL;
+  MpegTSParsePad *tspad;
+  guint16 pid;
+  GstBuffer *buffer;
+  GstFlowReturn ret = GST_FLOW_NOT_LINKED;
+  GstCaps *caps;
+
+  pid = packet->pid;
+  caps = gst_pad_get_caps (parse->srcpad);
+  buffer = packet->buffer;
+  gst_buffer_set_caps (buffer, caps);
+  gst_caps_unref (caps);
+
+  GST_OBJECT_LOCK (parse);
+  /* clear tspad->pushed on pads */
+  g_list_foreach (GST_ELEMENT_CAST (parse)->srcpads,
+      (GFunc) pad_clear_for_push, parse);
+  GST_OBJECT_UNLOCK (parse);
+
+  iterator = gst_element_iterate_src_pads (GST_ELEMENT_CAST (parse));
+  while (!done) {
+    switch (gst_iterator_next (iterator, &pad)) {
+      case GST_ITERATOR_OK:
+        tspad = gst_pad_get_element_private (GST_PAD (pad));
+
+        /* make sure to push only once if the iterator resyncs */
+        if (!tspad->pushed) {
+          /* ref the buffer as gst_pad_push takes a ref but we want to reuse the
+           * same buffer for next pushes */
+          gst_buffer_ref (buffer);
+          tspad->flow_return =
+              mpegts_parse_tspad_push (parse, tspad, pid, buffer);
+          tspad->pushed = TRUE;
+
+          if (GST_FLOW_IS_FATAL (tspad->flow_return)) {
+            /* return the error upstream */
+            ret = tspad->flow_return;
+            done = TRUE;
+          }
+        }
+
+        if (ret == GST_FLOW_NOT_LINKED)
+          ret = tspad->flow_return;
+
+        /* the iterator refs the pad */
+        g_object_unref (GST_PAD (pad));
+        break;
+      case GST_ITERATOR_RESYNC:
+        gst_iterator_resync (iterator);
+        break;
+      case GST_ITERATOR_DONE:
+        done = TRUE;
+        break;
+      default:
+        g_warning ("this should not be reached");
+    }
+  }
+
+  gst_iterator_free (iterator);
+
+  gst_buffer_unref (buffer);
+  packet->buffer = NULL;
+
+  return ret;
+}
+
+static gboolean
+mpegts_parse_is_psi_pid (MpegTSParse * parse, guint16 pid)
+{
+  return g_hash_table_lookup (parse->psi_pids,
+      GINT_TO_POINTER ((gint) pid)) != NULL;
+}
+
+static void
+mpegts_parse_apply_pat (MpegTSParse * parse, GValueArray * pat_info)
+{
+  GValue *value;
+  GValueArray *old_pat;
+  GObject *program_info;
+  gint program_number;
+  guint pid;
+  MpegTSParseProgram *program;
+  gint i;
+  GList *pads_to_add = NULL;
+  GList *pads_to_remove = NULL;
+
+  old_pat = parse->pat_info;
+  parse->pat_info = pat_info;
+  g_object_notify (G_OBJECT (parse), "pat-info");
+
+  GST_OBJECT_LOCK (parse);
+  /* activate the new table */
+  for (i = 0; i < pat_info->n_values; ++i) {
+    value = g_value_array_get_nth (pat_info, i);
+
+    program_info = g_value_get_object (value);
+    g_object_get (program_info,
+        "program-number", &program_number, "pid", &pid, NULL);
+
+    program = mpegts_parse_get_program (parse, program_number);
+    if (program) {
+      if (program->pmt_pid != pid) {
+        if (program->pmt_pid != G_MAXUINT16) {
+          /* pmt pid changed */
+          g_hash_table_remove (parse->psi_pids,
+              GINT_TO_POINTER ((gint) program->pmt_pid));
+        }
+
+        program->pmt_pid = pid;
+        g_hash_table_insert (parse->psi_pids,
+            GINT_TO_POINTER ((gint) pid), GINT_TO_POINTER (1));
+      }
+
+      program->patcount += 1;
+    } else {
+      GST_INFO_OBJECT (parse, "PAT adding program %d pmt_pid %d",
+          program_number, pid);
+
+      g_hash_table_insert (parse->psi_pids,
+          GINT_TO_POINTER ((gint) pid), GINT_TO_POINTER (1));
+      program = mpegts_parse_add_program (parse, program_number, pid);
+    }
+
+    if (program->selected && !program->active)
+      parse->pads_to_add = g_list_append (parse->pads_to_add,
+          mpegts_parse_activate_program (parse, program));
+  }
+
+  if (old_pat) {
+    /* deactivate the old table */
+
+    for (i = 0; i < old_pat->n_values; ++i) {
+      value = g_value_array_get_nth (old_pat, i);
+
+      program_info = g_value_get_object (value);
+      g_object_get (program_info,
+          "program-number", &program_number, "pid", &pid, NULL);
+
+      program = mpegts_parse_get_program (parse, program_number);
+      if (program->patcount-- == 1)
+        /* the program has been referenced by the new pat, keep it */
+        continue;
+
+      GST_INFO_OBJECT (parse, "PAT removing program %d pmt_pid %d",
+          program_number, pid);
+
+      if (program->active)
+        parse->pads_to_remove = g_list_append (parse->pads_to_remove,
+            mpegts_parse_deactivate_program (parse, program));
+
+      mpegts_parse_remove_program (parse, program_number);
+      g_hash_table_remove (parse->psi_pids, GINT_TO_POINTER ((gint) pid));
+    }
+
+    g_value_array_free (old_pat);
+  }
+
+  pads_to_add = parse->pads_to_add;
+  parse->pads_to_add = NULL;
+  pads_to_remove = parse->pads_to_remove;
+  parse->pads_to_remove = NULL;
+  GST_OBJECT_UNLOCK (parse);
+
+  mpegts_parse_sync_program_pads (parse, pads_to_add, pads_to_remove);
+}
+
+static void
+mpegts_parse_apply_pmt (MpegTSParse * parse,
+    guint16 pmt_pid, GObject * pmt_info)
+{
+  MpegTSParseProgram *program;
+  gint program_number;
+  guint pcr_pid;
+  guint pid;
+  guint stream_type;
+  GValueArray *old_streams;
+  GValueArray *new_streams;
+  GValue *value;
+  GObject *stream;
+  gint i;
+
+  g_object_get (pmt_info, "program_number", &program_number,
+      "pcr-pid", &pcr_pid, "stream-info", &new_streams, NULL);
+
+  GST_OBJECT_LOCK (parse);
+  program = mpegts_parse_get_program (parse, program_number);
+  if (program) {
+    if (program->pmt_info) {
+      /* deactivate old pmt */
+      g_object_get (program->pmt_info, "stream-info", &old_streams, NULL);
+
+      for (i = 0; i < old_streams->n_values; ++i) {
+        value = g_value_array_get_nth (old_streams, i);
+        stream = g_value_get_object (value);
+
+        g_object_get (stream, "pid", &pid, "stream-type", &stream_type, NULL);
+        mpegts_parse_program_remove_stream (parse, program, (guint16) pid);
+      }
+
+      g_value_array_free (old_streams);
+      g_object_unref (program->pmt_info);
+    }
+  } else {
+    /* no PAT?? */
+    g_hash_table_insert (parse->psi_pids,
+        GINT_TO_POINTER ((gint) pmt_pid), GINT_TO_POINTER (1));
+    program = mpegts_parse_add_program (parse, program_number, pid);
+  }
+
+  /* activate new pmt */
+  program->pmt_info = pmt_info;
+  program->pmt_pid = pmt_pid;
+  mpegts_parse_program_add_stream (parse, program, (guint16) pcr_pid, -1);
+
+  for (i = 0; i < new_streams->n_values; ++i) {
+    value = g_value_array_get_nth (new_streams, i);
+    stream = g_value_get_object (value);
+
+    g_object_get (stream, "pid", &pid, "stream-type", &stream_type, NULL);
+    mpegts_parse_program_add_stream (parse, program, (guint16) pid,
+        (guint8) stream_type);
+  }
+  GST_OBJECT_UNLOCK (parse);
+
+  g_value_array_free (new_streams);
+
+  g_signal_emit (parse, signals[SIGNAL_PMT], 0, program_number, pmt_info);
+}
+
+static gboolean
+mpegts_parse_handle_psi (MpegTSParse * parse, MpegTSPacketizerSection * section)
+{
+  gboolean res = TRUE;
+
+  switch (section->table_id) {
+    case 0x00:
+    {
+      /* PAT */
+      GValueArray *pat_info;
+
+      pat_info = mpegts_packetizer_parse_pat (parse->packetizer, section);
+      if (pat_info)
+        mpegts_parse_apply_pat (parse, pat_info);
+      else
+        res = FALSE;
+
+      break;
+    }
+    case 0x02:
+    {
+      /* PMT */
+      GObject *pmt_info;
+
+      pmt_info = mpegts_packetizer_parse_pmt (parse->packetizer, section);
+      if (pmt_info)
+        mpegts_parse_apply_pmt (parse, section->pid, pmt_info);
+      else
+        res = FALSE;
+
+      break;
+    }
+    default:
+      break;
+  }
+
+  return res;
+}
+
+static gboolean
+mpegts_parse_sink_event (GstPad * pad, GstEvent * event)
+{
+  gboolean res;
+  MpegTSParse *parse =
+      GST_MPEGTS_PARSE (gst_object_get_parent (GST_OBJECT (pad)));
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_FLUSH_STOP:
+      mpegts_packetizer_clear (parse->packetizer);
+      res = gst_pad_event_default (pad, event);
+      break;
+    default:
+      res = gst_pad_event_default (pad, event);
+  }
+
+  gst_object_unref (parse);
+  return res;
+}
+
+static GstFlowReturn
+mpegts_parse_chain (GstPad * pad, GstBuffer * buf)
+{
+  GstFlowReturn res = GST_FLOW_OK;
+  MpegTSParse *parse;
+  gboolean parsed;
+  MpegTSPacketizer *packetizer;
+  MpegTSPacketizerPacket packet;
+
+  parse = GST_MPEGTS_PARSE (gst_object_get_parent (GST_OBJECT (pad)));
+  packetizer = parse->packetizer;
+
+  mpegts_packetizer_push (parse->packetizer, buf);
+  while (mpegts_packetizer_has_packets (parse->packetizer) &&
+      !GST_FLOW_IS_FATAL (res)) {
+    /* get the next packet */
+    parsed = mpegts_packetizer_next_packet (packetizer, &packet);
+    if (!parsed)
+      /* bad header, skip the packet */
+      goto next;
+
+    /* parse PSI data */
+    if (packet.payload != NULL && mpegts_parse_is_psi_pid (parse, packet.pid)) {
+      MpegTSPacketizerSection section;
+
+      parsed = mpegts_packetizer_push_section (packetizer, &packet, &section);
+      if (!parsed)
+        /* bad section data */
+        goto next;
+
+      if (section.complete) {
+        /* section complete */
+        parsed = mpegts_parse_handle_psi (parse, &section);
+        gst_buffer_unref (section.buffer);
+        if (!parsed)
+          /* bad PSI table */
+          goto next;
+      }
+    }
+
+    /* push the packet downstream */
+    res = mpegts_parse_push (parse, &packet);
+
+  next:
+    mpegts_packetizer_clear_packet (parse->packetizer, &packet);
+  }
+
+  gst_object_unref (parse);
+  return res;
+}
+
+static GstStateChangeReturn
+mpegts_parse_change_state (GstElement * element, GstStateChange transition)
+{
+  MpegTSParse *parse;
+  GstStateChangeReturn ret;
+
+  parse = GST_MPEGTS_PARSE (element);
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_PAUSED_TO_READY:
+      mpegts_parse_reset (parse);
+      break;
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  GST_DEBUG_CATEGORY_INIT (mpegts_parse_debug, "mpegtsparse", 0,
+      "MPEG transport stream parser");
+
+  mpegts_packetizer_init_debug ();
+
+  return gst_element_register (plugin, "mpegtsparse",
+      GST_RANK_NONE, GST_TYPE_MPEGTS_PARSE);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "mpegtsparse",
+    "MPEG-2 transport stream parser",
+    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)