mpegpsmux: Add MPEG PS muxer

2024-11-27 04:01:08 +00:00 · 2009-08-11 12:00:10 +02:00 · 2009-08-11 12:00:10 +02:00 · adb4130e65
commit adb4130e65
parent de1f057725
11 changed files with 2730 additions and 0 deletions
--- a/configure.ac
+++ b/configure.ac
@ -274,6 +274,7 @@ AG_GST_CHECK_PLUGIN(librfb)
 AG_GST_CHECK_PLUGIN(liveadder)
 AG_GST_CHECK_PLUGIN(mpegdemux)
 AG_GST_CHECK_PLUGIN(mpegtsmux)
+AG_GST_CHECK_PLUGIN(mpegpsmux)
 AG_GST_CHECK_PLUGIN(mpeg4videoparse)
 AG_GST_CHECK_PLUGIN(mpegvideoparse)
 AG_GST_CHECK_PLUGIN(mve)
@ -1724,6 +1725,7 @@ gst/liveadder/Makefile
 gst/mpegdemux/Makefile
 gst/mpegtsmux/Makefile
 gst/mpegtsmux/tsmux/Makefile
+gst/mpegpsmux/Makefile
 gst/mpeg4videoparse/Makefile
 gst/mpegvideoparse/Makefile
 gst/mve/Makefile
--- a/gst/mpegpsmux/Makefile.am
+++ b/gst/mpegpsmux/Makefile.am
@ -0,0 +1,23 @@
+plugin_LTLIBRARIES = libgstmpegpsmux.la
+
+libgstmpegpsmux_la_SOURCES = \
+	mpegpsmux.c \
+	psmux.c \
+	psmuxstream.c \
+	mpegpsmux_aac.c \
+	mpegpsmux_h264.c
+
+libgstmpegpsmux_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CLFAGS)
+libgstmpegpsmux_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS)
+libgstmpegpsmux_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+libgstmpegpsmux_la_LIBTOOLFLAGS = --tag=disable-static
+
+noinst_HEADERS = \
+	mpegpsmux.h \
+	psmux.h \
+	psmuxstream.h \
+	psmuxcommon.h \
+	mpegpsmux_aac.h \
+	mpegpsmux_h264.h \
+	bits.h \
+	crc.h
--- a/gst/mpegpsmux/bits.h
+++ b/gst/mpegpsmux/bits.h
@ -0,0 +1,95 @@
+/*****************************************************************************
+ * bits.h
+ *****************************************************************************
+ * Copyright (C) 2001, 2002 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Laurent Aimar <fenrir@via.ecp.fr>
+ *          Eric Petit <titer@videolan.org>
+ *
+ * Copyright (C) 2008 Lin YANG <oxcsnicho@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifndef	__BITS_H__
+#define __BITS_H__
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+typedef struct bits_buffer_s
+{
+    gint     i_size;
+
+    gint     i_data;
+    guint8   i_mask;
+    guint8*  p_data;
+
+} bits_buffer_t;
+
+static inline gint bits_initwrite( bits_buffer_t *p_buffer,
+                                  gint i_size, void *p_data )
+{
+    p_buffer->i_size = i_size;
+    p_buffer->i_data = 0;
+    p_buffer->i_mask = 0x80;
+    p_buffer->p_data = p_data;
+    if( !p_buffer->p_data )
+    {
+        if( !( p_buffer->p_data = g_slice_alloc0( i_size ) ) )
+            return -1;
+    }
+    p_buffer->p_data[0] = 0;
+    return 0;
+}
+
+static inline void bits_align( bits_buffer_t *p_buffer )
+{
+    if( p_buffer->i_mask != 0x80 && p_buffer->i_data < p_buffer->i_size )
+    {
+        p_buffer->i_mask = 0x80;
+        p_buffer->i_data++;
+        p_buffer->p_data[p_buffer->i_data] = 0x00;
+    }
+}
+
+static inline void bits_write( bits_buffer_t *p_buffer,
+                               gint i_count, guint64 i_bits )
+{
+    while( i_count > 0 )
+    {
+        i_count--;
+
+        if( ( i_bits >> i_count )&0x01 )
+        {
+            p_buffer->p_data[p_buffer->i_data] |= p_buffer->i_mask;
+        }
+        else
+        {
+            p_buffer->p_data[p_buffer->i_data] &= ~p_buffer->i_mask;
+        }
+        p_buffer->i_mask >>= 1;
+        if( p_buffer->i_mask == 0 )
+        {
+            p_buffer->i_data++;
+            p_buffer->i_mask = 0x80;
+        }
+    }
+}
+
+G_END_DECLS
+
+#endif
--- a/gst/mpegpsmux/crc.h
+++ b/gst/mpegpsmux/crc.h
@ -0,0 +1,100 @@
+/* MPEG-PS muxer plugin for GStreamer
+ * Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
+ *
+ * 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.
+ */
+/*
+ * Unless otherwise indicated, Source Code is licensed under MIT license.
+ * See further explanation attached in License Statement (distributed in the file
+ * LICENSE).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+static guint32 crc_tab[256] = {
+  0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
+  0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
+  0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7,
+  0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
+  0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3,
+  0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
+  0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef,
+  0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
+  0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb,
+  0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
+  0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
+  0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
+  0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4,
+  0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
+  0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08,
+  0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
+  0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc,
+  0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
+  0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050,
+  0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
+  0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
+  0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
+  0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1,
+  0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
+  0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5,
+  0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
+  0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9,
+  0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
+  0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd,
+  0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
+  0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
+  0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
+  0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2,
+  0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
+  0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e,
+  0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
+  0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a,
+  0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
+  0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676,
+  0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
+  0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
+  0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
+  0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
+};
+
+static guint32
+calc_crc32 (guint8 *data, guint datalen)
+{
+  guint i;
+  guint32 crc = 0xffffffff;
+
+  for (i=0; i<datalen; i++) {
+    crc = (crc << 8) ^ crc_tab[((crc >> 24) ^ *data++) & 0xff];
+  }
+
+  return crc;
+}
--- a/gst/mpegpsmux/mpegpsmux.c
+++ b/gst/mpegpsmux/mpegpsmux.c
@ -0,0 +1,702 @@
+/* MPEG-PS muxer plugin for GStreamer
+ * Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
+ *
+ * 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.
+ */
+/*
+ * Unless otherwise indicated, Source Code is licensed under MIT license.
+ * See further explanation attached in License Statement (distributed in the file
+ * LICENSE).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <string.h>
+
+#include "mpegpsmux.h"
+#include "mpegpsmux_aac.h"
+#include "mpegpsmux_h264.h"
+
+GST_DEBUG_CATEGORY (mpegpsmux_debug);
+#define GST_CAT_DEFAULT mpegpsmux_debug
+
+enum
+{
+  ARG_0
+};
+
+static GstStaticPadTemplate mpegpsmux_sink_factory =
+    GST_STATIC_PAD_TEMPLATE ("sink_%d",
+    GST_PAD_SINK,
+    GST_PAD_REQUEST,
+    GST_STATIC_CAPS ("video/mpeg, "
+        "mpegversion = (int) { 1, 2, 4 }, "
+        "systemstream = (boolean) false; "
+        "video/x-dirac;"
+        "video/x-h264;"
+        "audio/mpeg, "
+        "mpegversion = (int) { 1, 2, 4 };"
+        "audio/x-lpcm, "
+        "width = (int) { 16, 20, 24 }, "
+        "rate = (int) { 48000, 96000 }, "
+        "channels = (int) [ 1, 8 ], "
+        "dynamic_range = (int) [ 0, 255 ], "
+        "emphasis = (boolean) { FALSE, TRUE }, "
+        "mute = (boolean) { FALSE, TRUE }"));
+
+static GstStaticPadTemplate mpegpsmux_src_factory =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/mpeg, "
+        "mpegversion = (int) 2, " "systemstream = (boolean) true")
+    );
+
+static void gst_mpegpsmux_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_mpegpsmux_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static void mpegpsmux_dispose (GObject * object);
+static gboolean new_packet_cb (guint8 * data, guint len, void *user_data);
+static void release_buffer_cb (guint8 * data, void *user_data);
+
+static gboolean mpegpsdemux_prepare_srcpad (MpegPsMux * mux);
+static GstFlowReturn mpegpsmux_collected (GstCollectPads * pads,
+    MpegPsMux * mux);
+static GstPad *mpegpsmux_request_new_pad (GstElement * element,
+    GstPadTemplate * templ, const gchar * name);
+static void mpegpsmux_release_pad (GstElement * element, GstPad * pad);
+static GstStateChangeReturn mpegpsmux_change_state (GstElement * element,
+    GstStateChange transition);
+
+GST_BOILERPLATE (MpegPsMux, mpegpsmux, GstElement, GST_TYPE_ELEMENT);
+
+static void
+mpegpsmux_base_init (gpointer g_class)
+{
+  const GstElementDetails mpegpsmux_details = {
+    "MPEG Program Stream Muxer",
+    "Codec/Muxer",
+    "Multiplexes media streams into an MPEG Program Stream",
+    "Lin YANG <oxcsnicho@gmail.com>"
+  };
+  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&mpegpsmux_sink_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&mpegpsmux_src_factory));
+
+  gst_element_class_set_details (element_class, &mpegpsmux_details);
+}
+
+static void
+mpegpsmux_class_init (MpegPsMuxClass * klass)
+{
+  GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+  gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_mpegpsmux_set_property);
+  gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_mpegpsmux_get_property);
+  gobject_class->dispose = mpegpsmux_dispose;
+
+  gstelement_class->request_new_pad = mpegpsmux_request_new_pad;
+  gstelement_class->release_pad = mpegpsmux_release_pad;
+  gstelement_class->change_state = mpegpsmux_change_state;
+
+}
+
+static void
+mpegpsmux_init (MpegPsMux * mux, MpegPsMuxClass * g_class)
+{
+  mux->srcpad =
+      gst_pad_new_from_template (gst_static_pad_template_get
+      (&mpegpsmux_src_factory), "src");
+  gst_pad_use_fixed_caps (mux->srcpad);
+  gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
+
+  mux->collect = gst_collect_pads_new ();
+  gst_collect_pads_set_function (mux->collect,
+      (GstCollectPadsFunction) GST_DEBUG_FUNCPTR (mpegpsmux_collected), mux);
+
+  mux->psmux = psmux_new ();
+  psmux_set_write_func (mux->psmux, new_packet_cb, mux);
+
+  mux->first = TRUE;
+  mux->last_flow_ret = GST_FLOW_OK;
+  mux->last_ts = 0;             /* XXX: or -1? */
+}
+
+static void
+mpegpsmux_dispose (GObject * object)
+{
+  MpegPsMux *mux = GST_MPEG_PSMUX (object);
+
+  if (mux->collect) {
+    gst_object_unref (mux->collect);
+    mux->collect = NULL;
+  }
+  if (mux->psmux) {
+    psmux_free (mux->psmux);
+    mux->psmux = NULL;
+  }
+
+  GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
+}
+
+static void
+gst_mpegpsmux_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+/*  MpegPsMux *mux = GST_MPEG_PSMUX (object); */
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_mpegpsmux_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+/*  MpegPsMux *mux = GST_MPEG_PSMUX (object); */
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+release_buffer_cb (guint8 * data, void *user_data)
+{
+  /* release a given buffer. callback func */
+
+  GstBuffer *buf = (GstBuffer *) user_data;
+  gst_buffer_unref (buf);
+}
+
+static GstFlowReturn
+mpegpsmux_create_stream (MpegPsMux * mux, MpegPsPadData * ps_data, GstPad * pad)
+{
+  /* Create a steam. Fill in codec specific information */
+
+  GstFlowReturn ret = GST_FLOW_ERROR;
+  GstCaps *caps = gst_pad_get_negotiated_caps (pad);
+  GstStructure *s;
+
+  if (caps == NULL) {
+    GST_DEBUG_OBJECT (pad, "Sink pad caps were not set before pushing");
+    return GST_FLOW_NOT_NEGOTIATED;
+  }
+
+  s = gst_caps_get_structure (caps, 0);
+  g_return_val_if_fail (s != NULL, FALSE);
+
+  if (gst_structure_has_name (s, "video/x-dirac")) {
+    GST_DEBUG_OBJECT (pad, "Creating Dirac stream");
+    ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_DIRAC);
+  } else if (gst_structure_has_name (s, "audio/x-ac3")) {
+    GST_DEBUG_OBJECT (pad, "Creating AC3 stream");
+    ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_PS_AUDIO_AC3);
+  } else if (gst_structure_has_name (s, "audio/x-dts")) {
+    GST_DEBUG_OBJECT (pad, "Creating DTS stream");
+    ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_PS_AUDIO_DTS);
+  } else if (gst_structure_has_name (s, "audio/x-lpcm")) {
+    GST_DEBUG_OBJECT (pad, "Creating LPCM stream");
+    ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_PS_AUDIO_LPCM);
+  } else if (gst_structure_has_name (s, "video/x-h264")) {
+    const GValue *value;
+    GST_DEBUG_OBJECT (pad, "Creating H264 stream");
+    /* Codec data contains SPS/PPS which need to go in stream for valid ES */
+    value = gst_structure_get_value (s, "codec_data");
+    if (value) {
+      ps_data->codec_data = gst_buffer_ref (gst_value_get_buffer (value));
+      GST_DEBUG_OBJECT (pad, "we have additional codec data (%d bytes)",
+          GST_BUFFER_SIZE (ps_data->codec_data));
+      ps_data->prepare_func = mpegpsmux_prepare_h264;
+    } else {
+      ps_data->codec_data = NULL;
+    }
+    ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_H264);
+  } else if (gst_structure_has_name (s, "audio/mpeg")) {
+    gint mpegversion;
+    if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
+      GST_ELEMENT_ERROR (pad, STREAM, FORMAT,
+          ("Invalid data format presented"),
+          ("Caps with type audio/mpeg did not have mpegversion"));
+      goto beach;
+    }
+
+    switch (mpegversion) {
+      case 1:
+        GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 1 stream");
+        ps_data->stream =
+            psmux_create_stream (mux->psmux, PSMUX_ST_AUDIO_MPEG1);
+        break;
+      case 2:
+        GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 2 stream");
+        ps_data->stream =
+            psmux_create_stream (mux->psmux, PSMUX_ST_AUDIO_MPEG2);
+        break;
+      case 4:
+      {
+        const GValue *value;
+        /* Codec data contains SPS/PPS which need to go in stream for valid ES */
+        GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 4 stream");
+        value = gst_structure_get_value (s, "codec_data");
+        if (value) {
+          ps_data->codec_data = gst_buffer_ref (gst_value_get_buffer (value));
+          GST_DEBUG_OBJECT (pad, "we have additional codec data (%d bytes)",
+              GST_BUFFER_SIZE (ps_data->codec_data));
+          ps_data->prepare_func = mpegpsmux_prepare_aac;
+        } else {
+          ps_data->codec_data = NULL;
+        }
+        ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_AUDIO_AAC);
+        break;
+      }
+      default:
+        GST_WARNING_OBJECT (pad, "unsupported mpegversion %d", mpegversion);
+        goto beach;
+    }
+  } else if (gst_structure_has_name (s, "video/mpeg")) {
+    gint mpegversion;
+    if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
+      GST_ELEMENT_ERROR (mux, STREAM, FORMAT,
+          ("Invalid data format presented"),
+          ("Caps with type video/mpeg did not have mpegversion"));
+      goto beach;
+    }
+
+    if (mpegversion == 1) {
+      GST_DEBUG_OBJECT (pad, "Creating MPEG Video, version 1 stream");
+      ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_MPEG1);
+    } else if (mpegversion == 2) {
+      GST_DEBUG_OBJECT (pad, "Creating MPEG Video, version 2 stream");
+      ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_MPEG2);
+    } else {
+      GST_DEBUG_OBJECT (pad, "Creating MPEG Video, version 4 stream");
+      ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_MPEG4);
+    }
+  }
+
+  if (ps_data->stream != NULL) {
+    ps_data->stream_id = ps_data->stream->stream_id;
+    ps_data->stream_id_ext = ps_data->stream->stream_id_ext;
+    GST_DEBUG_OBJECT (pad, "Stream created, stream_id=%04x, stream_id_ext=%04x",
+        ps_data->stream_id, ps_data->stream_id_ext);
+
+    gst_structure_get_int (s, "rate", &ps_data->stream->audio_sampling);
+    gst_structure_get_int (s, "channels", &ps_data->stream->audio_channels);
+    gst_structure_get_int (s, "bitrate", &ps_data->stream->audio_bitrate);
+
+    psmux_stream_set_buffer_release_func (ps_data->stream, release_buffer_cb);
+
+    ret = GST_FLOW_OK;
+  }
+
+beach:
+  return ret;
+}
+
+static GstFlowReturn
+mpegpsmux_create_streams (MpegPsMux * mux)
+{
+  /* Create stream for each pad */
+
+  GstFlowReturn ret = GST_FLOW_OK;
+  GSList *walk = mux->collect->data;
+
+  /* Create the streams */
+  while (walk) {
+    GstCollectData *c_data = (GstCollectData *) walk->data;
+    MpegPsPadData *ps_data = (MpegPsPadData *) walk->data;
+
+    walk = g_slist_next (walk);
+
+    if (ps_data->stream == NULL) {
+      ret = mpegpsmux_create_stream (mux, ps_data, c_data->pad);
+      if (ret != GST_FLOW_OK)
+        goto no_stream;
+    }
+  }
+
+  return GST_FLOW_OK;
+no_stream:
+  GST_ELEMENT_ERROR (mux, STREAM, MUX,
+      ("Could not create handler for stream"), (NULL));
+  return ret;
+}
+
+static MpegPsPadData *
+mpegpsmux_choose_best_stream (MpegPsMux * mux)
+{
+  /* Choose from which stream to mux with */
+
+  MpegPsPadData *best = NULL;
+  GstCollectData *c_best = NULL;
+  GSList *walk;
+
+  for (walk = mux->collect->data; walk != NULL; walk = g_slist_next (walk)) {
+    GstCollectData *c_data = (GstCollectData *) walk->data;
+    MpegPsPadData *ps_data = (MpegPsPadData *) walk->data;
+
+    if (ps_data->eos == FALSE) {
+      if (ps_data->queued_buf == NULL) {
+        GstBuffer *buf;
+
+        ps_data->queued_buf = buf =
+            gst_collect_pads_peek (mux->collect, c_data);
+
+        if (buf != NULL) {
+          if (ps_data->prepare_func) {
+            buf = ps_data->prepare_func (buf, ps_data, mux);
+            if (buf) {          /* Take the prepared buffer instead */
+              gst_buffer_unref (ps_data->queued_buf);
+              ps_data->queued_buf = buf;
+            } else {            /* If data preparation returned NULL, use unprepared one */
+              buf = ps_data->queued_buf;
+            }
+          }
+          if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) {
+            /* Ignore timestamps that go backward for now. FIXME: Handle all
+             * incoming PTS */
+            if (ps_data->last_ts == GST_CLOCK_TIME_NONE ||
+                ps_data->last_ts < GST_BUFFER_TIMESTAMP (buf)) {
+              ps_data->cur_ts = ps_data->last_ts =
+                  gst_segment_to_running_time (&c_data->segment,
+                  GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buf));
+            } else {
+              GST_DEBUG_OBJECT (mux, "Ignoring PTS that has gone backward");
+            }
+          } else
+            ps_data->cur_ts = GST_CLOCK_TIME_NONE;
+
+          GST_DEBUG_OBJECT (mux, "Pulled buffer with ts %" GST_TIME_FORMAT
+              " (uncorrected ts %" GST_TIME_FORMAT " %" G_GUINT64_FORMAT
+              ") for PID 0x%04x",
+              GST_TIME_ARGS (ps_data->cur_ts),
+              GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
+              GST_BUFFER_TIMESTAMP (buf), ps_data->stream_id);
+
+          /* Choose a stream we've never seen a timestamp for to ensure
+           * we push enough buffers from it to reach a timestamp */
+          if (ps_data->last_ts == GST_CLOCK_TIME_NONE) {
+            best = ps_data;
+            c_best = c_data;
+          }
+        } else {
+          ps_data->eos = TRUE;
+          continue;
+        }
+      }
+
+      /* If we don't yet have a best pad, take this one, otherwise take
+       * whichever has the oldest timestamp */
+      if (best != NULL) {
+        if (ps_data->last_ts != GST_CLOCK_TIME_NONE &&
+            best->last_ts != GST_CLOCK_TIME_NONE &&
+            ps_data->last_ts < best->last_ts) {
+          best = ps_data;
+          c_best = c_data;
+        }
+      } else {
+        best = ps_data;
+        c_best = c_data;
+      }
+    }
+  }
+  if (c_best) {
+    gst_buffer_unref (gst_collect_pads_pop (mux->collect, c_best));
+  }
+
+  return best;
+}
+
+static GstFlowReturn
+mpegpsmux_collected (GstCollectPads * pads, MpegPsMux * mux)
+{
+  /* main muxing function */
+
+  GstFlowReturn ret = GST_FLOW_OK;
+  MpegPsPadData *best = NULL;
+
+  GST_DEBUG_OBJECT (mux, "Pads collected");
+
+  if (mux->first) {             /* process block for the first mux */
+    /* iterate through the collect pads and add streams to @mux */
+    ret = mpegpsmux_create_streams (mux);
+    /* Assumption : all pads are already added at this time */
+
+    if (G_UNLIKELY (ret != GST_FLOW_OK))
+      return ret;
+
+    best = mpegpsmux_choose_best_stream (mux);
+
+    /* prepare the src pad (output), return if failed */
+    if (!mpegpsdemux_prepare_srcpad (mux)) {
+      GST_DEBUG_OBJECT (mux, "Failed to send new segment");
+      goto new_seg_fail;
+    }
+
+    mux->first = FALSE;
+  } else {
+    best = mpegpsmux_choose_best_stream (mux);
+  }
+
+  if (best != NULL) {
+    /* @*buf : the buffer to be processed */
+    GstBuffer *buf = best->queued_buf;
+    GstCollectData *c_data = (GstCollectData *) best;
+    gint64 pts = -1;
+
+    g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
+
+    GST_DEBUG_OBJECT (mux,
+        "Chose stream from pad %" GST_PTR_FORMAT " for output (PID: 0x%04x)",
+        c_data->pad, best->stream_id);
+
+    /* set timestamp */
+    if (GST_CLOCK_TIME_IS_VALID (best->cur_ts)) {
+      pts = GSTTIME_TO_MPEGTIME (best->cur_ts); /* @pts: current timestamp */
+      GST_DEBUG_OBJECT (mux, "Buffer has TS %" GST_TIME_FORMAT " pts %"
+          G_GINT64_FORMAT, GST_TIME_ARGS (best->cur_ts), pts);
+    }
+
+    /* give the buffer to libpsmux for processing */
+    psmux_stream_add_data (best->stream, GST_BUFFER_DATA (buf),
+        GST_BUFFER_SIZE (buf), buf, pts, -1);
+    best->queued_buf = NULL;
+
+    /* write the data from libpsmux to stream */
+    while (psmux_stream_bytes_in_buffer (best->stream) > 0) {
+      GST_LOG_OBJECT (mux, "Before @psmux_write_stream_packet");
+      if (!psmux_write_stream_packet (mux->psmux, best->stream)) {
+        GST_DEBUG_OBJECT (mux, "Failed to write data packet");
+        goto write_fail;
+      }
+    }
+    mux->last_ts = best->last_ts;
+  } else {
+    /* FIXME: Drain all remaining streams */
+    /* At EOS */
+    if (psmux_write_end_code (mux->psmux)) {
+      GST_WARNING_OBJECT (mux, "Writing MPEG PS Program end code failed.");
+    }
+    gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
+  }
+
+  return ret;
+new_seg_fail:
+  return GST_FLOW_ERROR;
+write_fail:
+  /* FIXME: Failed writing data for some reason. Should set appropriate error */
+  return mux->last_flow_ret;
+}
+
+static GstPad *
+mpegpsmux_request_new_pad (GstElement * element,
+    GstPadTemplate * templ, const gchar * name)
+{
+
+  MpegPsMux *mux = GST_MPEG_PSMUX (element);
+  GstPad *pad = NULL;
+  MpegPsPadData *pad_data = NULL;
+
+  pad = gst_pad_new_from_template (templ, name);
+
+  pad_data = (MpegPsPadData *) gst_collect_pads_add_pad (mux->collect, pad,
+      sizeof (MpegPsPadData));
+  if (pad_data == NULL)
+    goto pad_failure;
+
+  pad_data->last_ts = GST_CLOCK_TIME_NONE;
+  pad_data->codec_data = NULL;
+  pad_data->prepare_func = NULL;
+
+  if (G_UNLIKELY (!gst_element_add_pad (element, pad)))
+    goto could_not_add;
+
+  return pad;
+
+could_not_add:
+  GST_ELEMENT_ERROR (element, STREAM, FAILED,
+      ("Internal data stream error."), ("Could not add pad to element"));
+  gst_collect_pads_remove_pad (mux->collect, pad);
+  gst_object_unref (pad);
+  return NULL;
+pad_failure:
+  GST_ELEMENT_ERROR (element, STREAM, FAILED,
+      ("Internal data stream error."), ("Could not add pad to collectpads"));
+  gst_object_unref (pad);
+  return NULL;
+}
+
+static void
+mpegpsmux_release_pad (GstElement * element, GstPad * pad)
+{
+  /* unref pad data (and codec data) */
+
+  MpegPsMux *mux = GST_MPEG_PSMUX (element);
+  MpegPsPadData *pad_data = NULL;
+
+  GST_DEBUG_OBJECT (mux, "Pad %" GST_PTR_FORMAT " being released", pad);
+
+  /* Get the MpegPsPadData out of the pad */
+  GST_OBJECT_LOCK (pad);
+  pad_data = (MpegPsPadData *) gst_pad_get_element_private (pad);
+  if (G_LIKELY (pad_data)) {
+    /* Free codec data reference if any */
+    if (pad_data->codec_data) {
+      GST_DEBUG_OBJECT (element, "releasing codec_data reference");
+      gst_buffer_unref (pad_data->codec_data);
+      pad_data->codec_data = NULL;
+    }
+  }
+  GST_OBJECT_UNLOCK (pad);
+
+  gst_collect_pads_remove_pad (mux->collect, pad);
+}
+
+static gboolean
+new_packet_cb (guint8 * data, guint len, void *user_data)
+{
+  /* Called when the PsMux has prepared a packet for output. Return FALSE
+   * on error */
+
+  MpegPsMux *mux = (MpegPsMux *) user_data;
+  GstBuffer *buf;
+  GstFlowReturn ret;
+
+  GST_LOG_OBJECT (mux, "Outputting a packet of length %d", len);
+  buf = gst_buffer_new_and_alloc (len);
+  if (G_UNLIKELY (buf == NULL)) {
+    mux->last_flow_ret = GST_FLOW_ERROR;
+    return FALSE;
+  }
+  gst_buffer_set_caps (buf, GST_PAD_CAPS (mux->srcpad));
+
+  memcpy (GST_BUFFER_DATA (buf), data, len);
+  GST_BUFFER_TIMESTAMP (buf) = mux->last_ts;
+  ret = gst_pad_push (mux->srcpad, buf);
+  if (G_UNLIKELY (ret != GST_FLOW_OK)) {
+    mux->last_flow_ret = ret;
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+static gboolean
+mpegpsdemux_prepare_srcpad (MpegPsMux * mux)
+{
+  /* prepare the source pad for output */
+
+  GstEvent *new_seg =
+      gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0);
+  GstCaps *caps = gst_caps_new_simple ("video/mpeg",
+      "mpegversion", G_TYPE_INT, 2,
+      "systemstream", G_TYPE_BOOLEAN, TRUE,
+      NULL);
+
+/*      gst_static_pad_template_get_caps (&mpegpsmux_src_factory); */
+
+  /* Set caps on src pad from our template and push new segment */
+  gst_pad_set_caps (mux->srcpad, caps);
+
+  if (!gst_pad_push_event (mux->srcpad, new_seg)) {
+    GST_WARNING_OBJECT (mux, "New segment event was not handled");
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+static GstStateChangeReturn
+mpegpsmux_change_state (GstElement * element, GstStateChange transition)
+{
+  /* control the collect pads */
+
+  MpegPsMux *mux = GST_MPEG_PSMUX (element);
+  GstStateChangeReturn ret;
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+      break;
+    case GST_STATE_CHANGE_READY_TO_PAUSED:
+      gst_collect_pads_start (mux->collect);
+      break;
+    case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
+      break;
+    case GST_STATE_CHANGE_PAUSED_TO_READY:
+      gst_collect_pads_stop (mux->collect);
+      break;
+    case GST_STATE_CHANGE_READY_TO_NULL:
+      break;
+    default:
+      break;
+  }
+
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+  switch (transition) {
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  if (!gst_element_register (plugin, "mpegpsmux", GST_RANK_PRIMARY,
+          mpegpsmux_get_type ()))
+    return FALSE;
+
+  GST_DEBUG_CATEGORY_INIT (mpegpsmux_debug, "mpegpsmux", 0,
+      "MPEG Program Stream muxer");
+
+  return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,
+    "mpegpsmux", "MPEG-PS muxer",
+    plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
--- a/gst/mpegpsmux/mpegpsmux.h
+++ b/gst/mpegpsmux/mpegpsmux.h
@ -0,0 +1,120 @@
+/* MPEG-PS muxer plugin for GStreamer
+ * Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
+ *
+ * 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.
+ */
+/*
+ * Unless otherwise indicated, Source Code is licensed under MIT license.
+ * See further explanation attached in License Statement (distributed in the file
+ * LICENSE).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+
+#ifndef __MPEGPSMUX_H__
+#define __MPEGPSMUX_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstcollectpads.h>
+#include <gst/base/gstadapter.h>
+
+G_BEGIN_DECLS
+
+#include "psmux.h"
+
+#define GST_TYPE_MPEG_PSMUX  (mpegpsmux_get_type())
+#define GST_MPEG_PSMUX(obj)  (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_MPEG_PSMUX, MpegPsMux))
+
+typedef struct MpegPsMux MpegPsMux;
+typedef struct MpegPsMuxClass MpegPsMuxClass;
+typedef struct MpegPsPadData MpegPsPadData;
+
+typedef GstBuffer * (*MpegPsPadDataPrepareFunction) (GstBuffer * buf,
+    MpegPsPadData * data, MpegPsMux * mux);
+
+struct MpegPsMux {
+  GstElement parent;
+
+  GstPad *srcpad;
+
+  GstCollectPads *collect; // pads collector
+
+  PsMux *psmux;
+
+  gboolean first;
+  GstFlowReturn last_flow_ret;
+  
+  GstClockTime last_ts;
+};
+
+struct MpegPsMuxClass  {
+  GstElementClass parent_class;
+};
+
+struct MpegPsPadData {
+  GstCollectData collect; /* Parent */
+
+  guint8 stream_id;
+  guint8 stream_id_ext; 
+  PsMuxStream *stream;
+
+  GstBuffer *queued_buf; /* Currently pulled buffer */
+  GstClockTime cur_ts; /* Adjusted TS for the pulled buffer */
+  GstClockTime last_ts; /* Most recent valid TS for this stream */
+
+  GstBuffer * codec_data; /* Optional codec data available in the caps */
+
+  MpegPsPadDataPrepareFunction prepare_func; /* Handler to prepare input data */
+
+  gboolean eos;
+};
+
+GType mpegpsmux_get_type (void);
+
+#define CLOCK_BASE 9LL
+#define CLOCK_FREQ (CLOCK_BASE * 10000)
+
+#define MPEGTIME_TO_GSTTIME(time) (gst_util_uint64_scale ((time), \
+                        GST_MSECOND/10, CLOCK_BASE))
+#define GSTTIME_TO_MPEGTIME(time) (gst_util_uint64_scale ((time), \
+                        CLOCK_BASE, GST_MSECOND/10))
+
+#define NORMAL_TS_PACKET_LENGTH 188
+#define M2TS_PACKET_LENGTH      192
+#define STANDARD_TIME_CLOCK     27000000
+/*33 bits as 1 ie 0x1ffffffff*/
+#define TWO_POW_33_MINUS1     ((0xffffffff * 2) - 1) 
+G_END_DECLS
+
+#endif
--- a/gst/mpegpsmux/psmux.c
+++ b/gst/mpegpsmux/psmux.c
@ -0,0 +1,443 @@
+/* MPEG-PS muxer plugin for GStreamer
+ * Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
+ *
+ * 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.
+ */
+/*
+ * Unless otherwise indicated, Source Code is licensed under MIT license.
+ * See further explanation attached in License Statement (distributed in the file
+ * LICENSE).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+#include <gst/gst.h>
+
+#include "mpegpsmux.h"
+#include "psmuxcommon.h"
+#include "psmuxstream.h"
+#include "psmux.h"
+#include "crc.h"
+
+static gboolean psmux_packet_out (PsMux * mux);
+static gboolean psmux_write_pack_header (PsMux * mux);
+static gboolean psmux_write_system_header (PsMux * mux);
+static gboolean psmux_write_program_stream_map (PsMux * mux);
+
+/**
+ * psmux_new:
+ *
+ * Create a new muxer session.
+ *
+ * Returns: A new #PsMux object.
+ */
+PsMux *
+psmux_new ()
+{
+  PsMux *mux;
+
+  mux = g_slice_new0 (PsMux);
+
+  mux->pts = -1;                /* uninitialized values */
+  mux->pack_hdr_pts = -1;
+  mux->sys_hdr_pts = -1;
+  mux->psm_pts = -1;
+
+  mux->bit_pts = 0;
+
+  mux->pes_max_payload = PSMUX_PES_MAX_PAYLOAD;
+  mux->bit_rate = 400 * 1024;   /* XXX: better default values? */
+  mux->rate_bound = 2 * 1024;   /* 2* bit_rate / (8*50). XXX: any better default? */
+
+  mux->pack_hdr_freq = PSMUX_PACK_HDR_FREQ;
+  mux->sys_hdr_freq = PSMUX_SYS_HDR_FREQ;
+  mux->psm_freq = PSMUX_PSM_FREQ;
+
+  psmux_stream_id_info_init (&mux->id_info);
+
+  return mux;
+}
+
+/**
+ * psmux_set_write_func:
+ * @mux: a #PsMux
+ * @func: a user callback function
+ * @user_data: user data passed to @func
+ *
+ * Set the callback function and user data to be called when @mux has output to
+ * produce. @user_data will be passed as user data in @func.
+ */
+void
+psmux_set_write_func (PsMux * mux, PsMuxWriteFunc func, void *user_data)
+{
+  g_return_if_fail (mux != NULL);
+
+  mux->write_func = func;
+  mux->write_func_data = user_data;
+}
+
+gboolean
+psmux_write_end_code (PsMux * mux)
+{
+  guint8 end_code[4] = { 0, 0, 1, PSMUX_PROGRAM_END };
+  return mux->write_func (end_code, 4, mux->write_func_data);
+}
+
+
+/**
+ * psmux_free:
+ * @mux: a #PsMux
+ *
+ * Free all resources associated with @mux. After calling this function @mux can
+ * not be used anymore.
+ */
+void
+psmux_free (PsMux * mux)
+{
+  GList *cur;
+
+  g_return_if_fail (mux != NULL);
+
+  /* Free all streams */
+  for (cur = g_list_first (mux->streams); cur != NULL; cur = g_list_next (cur)) {
+    PsMuxStream *stream = (PsMuxStream *) cur->data;
+
+    psmux_stream_free (stream);
+  }
+  g_list_free (mux->streams);
+
+  g_slice_free (PsMux, mux);
+}
+
+/**
+ * psmux_create_stream:
+ * @mux: a #PsMux
+ * @stream_type: a #PsMuxStreamType
+ *
+ * Create a new stream of @stream_type in the muxer session @mux.
+ *
+ * Returns: a new #PsMuxStream.
+ */
+PsMuxStream *
+psmux_create_stream (PsMux * mux, PsMuxStreamType stream_type)
+{
+  PsMuxStream *stream;
+//  guint16 new_pid;
+
+  g_return_val_if_fail (mux != NULL, NULL);
+
+#if 0
+  if (pid == PSMUX_PID_AUTO) {
+    new_pid = psmux_get_new_pid (mux);
+  } else {
+    new_pid = pid & 0x1FFF;
+  }
+
+  /* Ensure we're not creating a PID collision */
+  if (psmux_find_stream (mux, new_pid))
+    return NULL;
+#endif
+
+  stream = psmux_stream_new (mux, stream_type);
+
+  mux->streams = g_list_prepend (mux->streams, stream);
+  if (stream->stream_id_ext) {
+    if (!mux->nb_private_streams)
+      mux->nb_streams++;
+    mux->nb_private_streams++;
+  } else
+    mux->nb_streams++;
+
+  if (stream->is_video_stream) {
+    mux->video_bound++;
+    if (mux->video_bound > 32)
+      g_critical ("Number of video es exceeds upper limit");
+  } else if (stream->is_audio_stream) {
+    mux->audio_bound++;
+    if (mux->audio_bound > 64)
+      g_critical ("Number of audio es exceeds upper limit");
+  }
+
+  return stream;
+}
+
+static gboolean
+psmux_packet_out (PsMux * mux)
+{
+  gboolean res;
+  if (G_UNLIKELY (mux->write_func == NULL))
+    return TRUE;
+
+  res = mux->write_func (mux->packet_buf, mux->packet_bytes_written,
+      mux->write_func_data);
+
+  if (res) {
+    mux->bit_size += mux->packet_bytes_written;
+  }
+  mux->packet_bytes_written = 0;
+  return res;
+}
+
+/**
+ * psmux_write_stream_packet:
+ * @mux: a #PsMux
+ * @stream: a #PsMuxStream
+ *
+ * Write a packet of @stream.
+ *
+ * Returns: TRUE if the packet could be written.
+ */
+gboolean
+psmux_write_stream_packet (PsMux * mux, PsMuxStream * stream)
+{
+  gboolean res;
+
+  g_return_val_if_fail (mux != NULL, FALSE);
+  g_return_val_if_fail (stream != NULL, FALSE);
+
+
+  {
+    guint64 ts = psmux_stream_get_pts (stream);
+    if (ts != -1)
+      mux->pts = ts;
+  }
+
+  if (mux->pts - mux->pack_hdr_pts > PSMUX_PACK_HDR_INTERVAL
+      || mux->pes_cnt % mux->pack_hdr_freq == 0) {
+    /* Time to write pack header */
+    /* FIXME: currently we write the mux rate of the PREVIOUS pack into the
+     * pack header, because of the incapability to calculate the mux_rate
+     * before outputing the pack. To calculate the mux_rate for the current
+     * pack, we need to put the whole pack into buffer, calculate the
+     * mux_rate, and then output the whole trunck.
+     */
+    if (mux->pts != -1 && mux->pts > mux->bit_pts
+        && mux->pts - mux->bit_pts > PSMUX_BITRATE_CALC_INTERVAL) {
+      /* XXX: smoothing the rate? */
+      mux->bit_rate =
+          gst_util_uint64_scale (mux->bit_size, 8 * CLOCKBASE,
+          (mux->pts - mux->bit_pts));
+
+      mux->bit_size = 0;
+      mux->bit_pts = mux->pts;
+    }
+
+    psmux_write_pack_header (mux);
+    mux->pack_hdr_pts = mux->pts;
+  }
+
+  if (mux->pes_cnt % mux->sys_hdr_freq == 0) {
+    /* Time to write system header */
+    psmux_write_system_header (mux);
+    mux->sys_hdr_pts = mux->pts;
+  }
+
+  if (mux->pes_cnt % mux->psm_freq == 0) {
+    /* Time to write program stream map (PSM) */
+    psmux_write_program_stream_map (mux);
+    mux->psm_pts = mux->pts;
+  }
+
+  /* Write the packet */
+  if (!(mux->packet_bytes_written =
+          psmux_stream_get_data (stream, mux->packet_buf,
+              mux->pes_max_payload + PSMUX_PES_MAX_HDR_LEN))) {
+    return FALSE;
+  }
+
+  res = psmux_packet_out (mux);
+  if (!res) {
+    PS_DEBUG ("packet write false");
+    return FALSE;
+  }
+
+  mux->pes_cnt += 1;
+
+  return res;
+}
+
+static gboolean
+psmux_write_pack_header (PsMux * mux)
+{
+  bits_buffer_t bw;
+  guint64 scr = mux->pts;       /* XXX: is this correct? necessary to put any offset? */
+  if (mux->pts == -1)
+    scr = 0;
+
+  /* pack_start_code */
+  bits_initwrite (&bw, 14, mux->packet_buf);
+  bits_write (&bw, 24, PSMUX_START_CODE_PREFIX);
+  bits_write (&bw, 8, PSMUX_PACK_HEADER);
+
+  /* scr */
+  bits_write (&bw, 2, 0x1);
+  bits_write (&bw, 3, (scr >> 30) & 0x07);
+  bits_write (&bw, 1, 1);
+  bits_write (&bw, 15, (scr >> 15) & 0x7fff);
+  bits_write (&bw, 1, 1);
+  bits_write (&bw, 15, scr & 0x7fff);
+  bits_write (&bw, 1, 1);
+  bits_write (&bw, 9, 0);       /* system_clock_reference_extension: set to 0 (like what VLC does) */
+  bits_write (&bw, 1, 1);
+
+  {
+    /* Scale to get the mux_rate, rounding up */
+    guint mux_rate =
+        gst_util_uint64_scale (mux->bit_rate + 8 * 50 - 1, 1, 8 * 50);
+    if (mux_rate > mux->rate_bound / 2)
+      mux->rate_bound = mux_rate * 2;
+    bits_write (&bw, 22, mux_rate);     /* program_mux_rate */
+    bits_write (&bw, 2, 3);
+  }
+
+  bits_write (&bw, 5, 0x1f);
+  bits_write (&bw, 3, 0);       /* pack_stuffing_length */
+
+  mux->packet_bytes_written = 14;
+  return psmux_packet_out (mux);
+}
+
+static gboolean
+psmux_write_system_header (PsMux * mux)
+{
+  bits_buffer_t bw;
+  guint len = 12 + (mux->nb_streams +
+      (mux->nb_private_streams > 1 ? mux->nb_private_streams - 1 : 0)) * 3;
+  GList *cur;
+  gboolean private_hit = FALSE;
+
+  /* system_header_start_code */
+  bits_initwrite (&bw, len, mux->packet_buf);
+
+  /* system_header start code */
+  bits_write (&bw, 24, PSMUX_START_CODE_PREFIX);
+  bits_write (&bw, 8, PSMUX_SYSTEM_HEADER);
+
+  bits_write (&bw, 16, len);    /* header_length */
+  bits_write (&bw, 1, 1);       /* marker */
+  bits_write (&bw, 22, mux->rate_bound);        /* rate_bound */
+  bits_write (&bw, 1, 1);       /* marker */
+  bits_write (&bw, 6, mux->audio_bound);        /* audio_bound */
+  bits_write (&bw, 1, 0);       /* fixed_flag */
+  bits_write (&bw, 1, 0);       /* CSPS_flag */
+  bits_write (&bw, 1, 0);       /* system_audio_lock_flag */
+  bits_write (&bw, 1, 0);       /* system_video_lock_flag */
+  bits_write (&bw, 1, 1);       /* marker */
+  bits_write (&bw, 5, mux->video_bound);        /* video_bound */
+  bits_write (&bw, 1, 0);       /* packet_rate_restriction_flag */
+  bits_write (&bw, 7, 0x7f);    /* reserved_bits */
+
+  for (cur = g_list_first (mux->streams), private_hit = FALSE; cur != NULL;
+      cur = g_list_next (cur)) {
+    PsMuxStream *stream = (PsMuxStream *) cur->data;
+
+    if (private_hit && stream->stream_id == PSMUX_EXTENDED_STREAM)
+      continue;
+
+    bits_write (&bw, 8, stream->stream_id);     /* stream_id */
+    bits_write (&bw, 2, 0x3);   /* reserved */
+    bits_write (&bw, 1, stream->is_video_stream);       /* buffer_bound_scale */
+    bits_write (&bw, 13, stream->max_buffer_size / (stream->is_video_stream ? 1024 : 128));     /* buffer_size_bound */
+
+    if (stream->stream_id == PSMUX_EXTENDED_STREAM)
+      private_hit = TRUE;
+  }
+
+  mux->packet_bytes_written = len;
+  return psmux_packet_out (mux);
+}
+
+static gboolean
+psmux_write_program_stream_map (PsMux * mux)
+{
+  gint psm_size = 16, es_map_size = 0;
+  bits_buffer_t bw;
+  GList *cur;
+  guint16 len;
+  guint8 *pos;
+
+  /* pre-write the descriptor loop */
+  pos = mux->es_info_buf;
+  for (cur = g_list_first (mux->streams); cur != NULL; cur = g_list_next (cur)) {
+    PsMuxStream *stream = (PsMuxStream *) cur->data;
+    len = 0;
+
+    *pos++ = stream->stream_type;
+    *pos++ = stream->stream_id;
+
+    psmux_stream_get_es_descrs (stream, pos + 2, &len);
+    psmux_put16 (&pos, len);
+
+    es_map_size += len + 4;
+    pos += len;
+#if 0
+    if (stream->lang[0] != 0)
+      es_map_size += 6;
+#endif
+  }
+
+  psm_size += es_map_size;
+  bits_initwrite (&bw, psm_size, mux->packet_buf);
+
+  /* psm start code */
+  bits_write (&bw, 24, PSMUX_START_CODE_PREFIX);
+  bits_write (&bw, 8, PSMUX_PROGRAM_STREAM_MAP);
+
+  bits_write (&bw, 16, psm_size - 6);   /* psm_length */
+  bits_write (&bw, 1, 1);       /* current_next_indicator */
+  bits_write (&bw, 2, 0xF);     /* reserved */
+  bits_write (&bw, 5, 0x1);     /* psm_version = 1 */
+  bits_write (&bw, 7, 0xFF);    /* reserved */
+  bits_write (&bw, 1, 1);       /* marker */
+
+  bits_write (&bw, 16, 0);      /* program_stream_info_length */
+  /* program_stream_info empty */
+
+  bits_write (&bw, 16, es_map_size);    /* elementary_stream_map_length */
+  memcpy (bw.p_data + bw.i_data, mux->es_info_buf, es_map_size);
+
+  /* CRC32 */
+  {
+    guint32 crc = calc_crc32 (mux->packet_buf, psm_size - 4);
+    guint8 *pos = mux->packet_buf + psm_size - 4;
+    psmux_put32 (&pos, crc);
+  }
+
+  mux->packet_bytes_written = psm_size;
+  return psmux_packet_out (mux);
+}
--- a/gst/mpegpsmux/psmux.h
+++ b/gst/mpegpsmux/psmux.h
@ -0,0 +1,114 @@
+/* MPEG-PS muxer plugin for GStreamer
+ * Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
+ *
+ * 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.
+ */
+/*
+ * Unless otherwise indicated, Source Code is licensed under MIT license.
+ * See further explanation attached in License Statement (distributed in the file
+ * LICENSE).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+
+#ifndef __PSMUX_H__
+#define __PSMUX_H__
+
+#include <glib.h>
+
+#include "psmuxcommon.h"
+#include "psmuxstream.h"
+
+G_BEGIN_DECLS
+
+#define PSMUX_MAX_ES_INFO_LENGTH ((1 << 12) - 1)
+
+typedef gboolean (*PsMuxWriteFunc) (guint8 *data, guint len, void *user_data);
+
+struct PsMux {
+  GList *streams;    /* PsMuxStream* array of all streams */
+  guint nb_streams;
+  guint nb_private_streams;
+  PsMuxStreamIdInfo id_info; /* carrying the info which ids are used */
+
+  /* timestamps: pts */ 
+  GstClockTime pts;
+
+  guint32 pes_cnt; /* # of pes that has been created */
+  guint16 pes_max_payload; /* maximum payload size in pes packets */
+
+  guint64 bit_size;  /* accumulated bit size of processed data */
+  guint bit_rate;  /* bit rate */ 
+  GstClockTime bit_pts; /* last time the bit_rate is updated */
+
+  guint pack_hdr_freq; /* PS pack header frequency */
+  GstClockTime pack_hdr_pts; /* last time a pack header is written */
+
+  guint sys_hdr_freq; /* system header frequency */ 
+  GstClockTime sys_hdr_pts; /* last time a system header is written */
+
+  guint psm_freq; /* program stream map frequency */ 
+  GstClockTime psm_pts; /* last time a psm is written */
+
+  guint8 packet_buf[PSMUX_MAX_PACKET_LEN];
+  guint packet_bytes_written; /* # of bytes written in the buf */
+  PsMuxWriteFunc write_func;
+  void *write_func_data;
+
+  /* Scratch space for writing ES_info descriptors */
+  guint8 es_info_buf[PSMUX_MAX_ES_INFO_LENGTH];
+
+  /* bounds in system header */ 
+  guint8 audio_bound;
+  guint8 video_bound;
+  guint32 rate_bound;
+};
+
+/* create/free new muxer session */
+PsMux *		psmux_new 			(void);
+void 		psmux_free 			(PsMux *mux);
+
+/* Setting muxing session properties */
+void 		psmux_set_write_func 		(PsMux *mux, PsMuxWriteFunc func, void *user_data);
+
+/* stream management */
+PsMuxStream *	psmux_create_stream 		(PsMux *mux, PsMuxStreamType stream_type);
+
+/* writing stuff */
+gboolean 	psmux_write_stream_packet 	(PsMux *mux, PsMuxStream *stream); 
+gboolean	psmux_write_end_code		(PsMux *mux);
+
+G_END_DECLS
+
+#endif
--- a/gst/mpegpsmux/psmuxcommon.h
+++ b/gst/mpegpsmux/psmuxcommon.h
@ -0,0 +1,162 @@
+/* MPEG-PS muxer plugin for GStreamer
+ * Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
+ *
+ * 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.
+ */
+/*
+ * Unless otherwise indicated, Source Code is licensed under MIT license.
+ * See further explanation attached in License Statement (distributed in the file
+ * LICENSE).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+
+#ifndef __PSMUX_COMMON_H__
+#define __PSMUX_COMMON_H__
+
+#include <glib.h>
+#include <gst/gst.h>
+#include "bits.h" /* from VLC */
+
+#undef PS_DEBUG_ON
+
+G_BEGIN_DECLS
+
+#define PSMUX_PACK_HDR_FREQ	30
+#define PSMUX_SYS_HDR_FREQ	300
+#define PSMUX_PSM_FREQ		300
+
+#define PSMUX_PES_MAX_PAYLOAD 65500 /* from VLC */
+#define PSMUX_PES_MAX_HDR_LEN 30
+#define PSMUX_MAX_PACKET_LEN (PSMUX_PES_MAX_PAYLOAD + PSMUX_PES_MAX_HDR_LEN)
+
+#define CLOCKBASE 90000
+#define PSMUX_PACK_HDR_INTERVAL		( 0.7 * CLOCKBASE) /* interval to update pack header. 0.7 sec */
+#define PSMUX_BITRATE_CALC_INTERVAL	CLOCKBASE /* interval to update bitrate in pack header. 1 sec */
+
+#define PSMUX_PES_BITRATE_DEFAULT 1000 /* Default bit_rate to write in the first pack header */
+
+#define PSMUX_START_CODE_PREFIX         0x01
+
+/* stream_id */ 
+#define PSMUX_PACK_HEADER               0xba
+#define PSMUX_SYSTEM_HEADER             0xbb
+#define PSMUX_PROGRAM_STREAM_MAP        0xbc
+#define PSMUX_PRIVATE_STREAM_1          0xbd
+#define PSMUX_PADDING_STREAM            0xbe
+#define PSMUX_PRIVATE_STREAM_2          0xbf
+#define PSMUX_ECM                       0xb0
+#define PSMUX_EMM                       0xb1
+#define PSMUX_PROGRAM_STREAM_DIRECTORY  0xff
+#define PSMUX_DSMCC_STREAM              0xf2
+#define PSMUX_ITU_T_H222_1_TYPE_E       0xf8
+#define PSMUX_EXTENDED_STREAM           0xfd
+#define PSMUX_PROGRAM_END               0xb9
+
+#define PSMUX_MIN_ES_DESC_LEN 8
+
+/* Frequency for PCR representation */
+#define PSMUX_SYS_CLOCK_FREQ (27000000L)
+/* Frequency for PTS values */
+#define PSMUX_CLOCK_FREQ (PSMUX_SYS_CLOCK_FREQ / 300)
+
+/* TODO: flags? looks that we don't need these */
+#define PSMUX_PACKET_FLAG_NONE            (0)
+#define PSMUX_PACKET_FLAG_ADAPTATION      (1 << 0)
+#define PSMUX_PACKET_FLAG_DISCONT         (1 << 1)
+#define PSMUX_PACKET_FLAG_RANDOM_ACCESS   (1 << 2)
+#define PSMUX_PACKET_FLAG_PRIORITY        (1 << 3)
+#define PSMUX_PACKET_FLAG_WRITE_PCR       (1 << 4)
+#define PSMUX_PACKET_FLAG_WRITE_OPCR      (1 << 5)
+#define PSMUX_PACKET_FLAG_WRITE_SPLICE    (1 << 6)
+#define PSMUX_PACKET_FLAG_WRITE_ADAPT_EXT (1 << 7)
+
+/* PES stream specific flags */
+#define PSMUX_PACKET_FLAG_PES_FULL_HEADER   (1 << 8)
+#define PSMUX_PACKET_FLAG_PES_WRITE_PTS     (1 << 9)
+#define PSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS (1 << 10)
+#define PSMUX_PACKET_FLAG_PES_WRITE_ESCR    (1 << 11)
+#define PSMUX_PACKET_FLAG_PES_EXT_STREAMID  (1 << 12)
+#define PSMUX_PACKET_FLAG_PES_DATA_ALIGN    (1 << 13)
+
+typedef struct PsMuxPacketInfo PsMuxPacketInfo;
+typedef struct PsMuxProgram PsMuxProgram;
+typedef struct PsMuxStream PsMuxStream;
+typedef struct PsMuxStreamIdInfo PsMuxStreamIdInfo;
+typedef struct PsMux PsMux;
+typedef enum PsMuxStreamType PsMuxStreamType;
+typedef struct PsMuxStreamBuffer PsMuxStreamBuffer;
+
+/* clearup and see if we need this anymore */
+struct PsMuxPacketInfo {
+  guint32 flags;
+};
+
+/* bitstream writers */
+static inline void
+psmux_put16 (guint8 **pos, guint16 val)
+{
+  *(*pos)++ = (val >> 8) & 0xff;
+  *(*pos)++ = val & 0xff;
+}
+
+static inline void
+psmux_put32 (guint8 **pos, guint32 val)
+{
+  *(*pos)++ = (val >> 24) & 0xff;
+  *(*pos)++ = (val >> 16) & 0xff;
+  *(*pos)++ = (val >> 8) & 0xff;
+  *(*pos)++ = val & 0xff;
+}
+
+static inline void
+psmux_put_ts (guint8 **pos, guint8 id, gint64 ts)
+{
+  /* 1: 4 bit id value | TS [32..30] | marker_bit */
+  *(*pos)++ = ((id << 4) | ((ts >> 29) & 0x0E) | 0x01) & 0xff;
+  /* 2, 3: TS[29..15] | marker_bit */
+  psmux_put16 (pos, ((ts >> 14) & 0xfffe) | 0x01);
+  /* 4, 5: TS[14..0] | marker_bit */
+  psmux_put16 (pos, ((ts << 1) & 0xfffe) | 0x01);
+}
+
+#ifdef PS_DEBUG_ON
+#define PS_DEBUG(...) g_print(__VA_ARGS__); g_print ("\n")
+#else
+#define PS_DEBUG(...)
+#endif
+
+G_END_DECLS
+
+#endif
--- a/gst/mpegpsmux/psmuxstream.c
+++ b/gst/mpegpsmux/psmuxstream.c
@ -0,0 +1,757 @@
+/* MPEG-PS muxer plugin for GStreamer
+ * Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
+ *
+ * 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.
+ */
+/*
+ * Unless otherwise indicated, Source Code is licensed under MIT license.
+ * See further explanation attached in License Statement (distributed in the file
+ * LICENSE).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "psmuxcommon.h"
+#include "psmuxstream.h"
+#include "psmux.h"
+
+static guint8 psmux_stream_pes_header_length (PsMuxStream * stream);
+static void psmux_stream_write_pes_header (PsMuxStream * stream, guint8 * data);
+static void psmux_stream_find_pts_dts_within (PsMuxStream * stream, guint bound,
+    gint64 * pts, gint64 * dts);
+
+/**
+ * psmux_stream_new:
+ * @pid: a PID
+ * @stream_type: the stream type
+ *
+ * Create a new stream with type = @stream_type, assign stream id accordingly
+ *
+ * Returns: a new #PsMuxStream.
+ */
+PsMuxStream *
+psmux_stream_new (PsMux * mux, PsMuxStreamType stream_type)
+{
+  PsMuxStream *stream = g_slice_new0 (PsMuxStream);
+  PsMuxStreamIdInfo *info = &(mux->id_info);
+
+  stream->stream_type = stream_type;
+  stream->is_audio_stream = FALSE;
+  stream->is_video_stream = FALSE;
+  stream->stream_id = 0;
+  stream->max_buffer_size = 0;
+
+  switch (stream_type) {
+      /* MPEG AUDIO */
+    case PSMUX_ST_AUDIO_MPEG1:
+    case PSMUX_ST_AUDIO_MPEG2:
+      stream->max_buffer_size = 2484;   /* ISO/IEC 13818 2.5.2.4 */
+    case PSMUX_ST_AUDIO_AAC:
+      if (info->id_mpga > PSMUX_STREAM_ID_MPGA_MAX)
+        break;
+      stream->stream_id = info->id_mpga++;
+      stream->stream_id_ext = 0;
+      stream->is_audio_stream = TRUE;
+      break;
+      /* MPEG VIDEO */
+    case PSMUX_ST_VIDEO_MPEG1:
+    case PSMUX_ST_VIDEO_MPEG2:
+    case PSMUX_ST_VIDEO_MPEG4:
+    case PSMUX_ST_VIDEO_H264:
+      if (info->id_mpgv > PSMUX_STREAM_ID_MPGV_MAX)
+        break;
+      stream->stream_id = info->id_mpgv++;
+      stream->stream_id_ext = 0;
+      stream->is_video_stream = TRUE;
+      break;
+      /* AC3 / A52 */
+    case PSMUX_ST_PS_AUDIO_AC3:
+      if (info->id_ac3 > PSMUX_STREAM_ID_AC3_MAX)
+        break;
+      stream->stream_id = PSMUX_PRIVATE_STREAM_1;
+      stream->stream_id_ext = info->id_ac3++;
+      stream->is_audio_stream = TRUE;
+      /* AC3 requires data alignment */
+      stream->pi.flags |= PSMUX_PACKET_FLAG_PES_DATA_ALIGN;
+      break;
+      /* TODO: SPU missing */
+#if 0
+    case spu:
+      if (info->id_spu > PSMUX_STREAM_ID_SPU_MAX)
+        break;
+      return info->id_spu++;
+#endif
+      /* DTS */
+    case PSMUX_ST_PS_AUDIO_DTS:
+      if (info->id_dts > PSMUX_STREAM_ID_DTS_MAX)
+        break;
+      stream->stream_id = PSMUX_PRIVATE_STREAM_1;
+      stream->stream_id_ext = info->id_dts++;
+      stream->is_audio_stream = TRUE;
+      break;
+      /* LPCM */
+    case PSMUX_ST_PS_AUDIO_LPCM:
+      if (info->id_lpcm > PSMUX_STREAM_ID_LPCM_MAX)
+        break;
+      stream->stream_id = PSMUX_PRIVATE_STREAM_1;
+      stream->stream_id_ext = info->id_lpcm++;
+      stream->is_audio_stream = TRUE;
+      break;
+    case PSMUX_ST_VIDEO_DIRAC:
+      if (info->id_dirac > PSMUX_STREAM_ID_DIRAC_MAX)
+        break;
+      stream->stream_id = PSMUX_EXTENDED_STREAM;
+      stream->stream_id_ext = info->id_dirac++;
+      stream->is_video_stream = TRUE;
+      break;
+    default:
+      g_critical ("Stream type 0x%0x not yet implemented", stream_type);
+      break;
+  }
+
+  if (stream->stream_id == 0) {
+    g_critical ("Number of elementary streams of type %04x exceeds maximum",
+        stream->stream_type);
+    return NULL;
+  }
+
+  /* XXX: Are private streams also using stream_id_ext? */
+  if (stream->stream_id == PSMUX_EXTENDED_STREAM)
+    stream->pi.flags |= PSMUX_PACKET_FLAG_PES_EXT_STREAMID;
+
+  /* Are these useful at all? */
+  if (stream->stream_id == PSMUX_PROGRAM_STREAM_MAP ||
+      stream->stream_id == PSMUX_PADDING_STREAM ||
+      stream->stream_id == PSMUX_PRIVATE_STREAM_2 ||
+      stream->stream_id == PSMUX_ECM ||
+      stream->stream_id == PSMUX_EMM ||
+      stream->stream_id == PSMUX_PROGRAM_STREAM_DIRECTORY ||
+      stream->stream_id == PSMUX_DSMCC_STREAM ||
+      stream->stream_id == PSMUX_ITU_T_H222_1_TYPE_E)
+    stream->pi.flags &= ~PSMUX_PACKET_FLAG_PES_FULL_HEADER;
+  else
+    stream->pi.flags |= PSMUX_PACKET_FLAG_PES_FULL_HEADER;
+
+  stream->buffers = NULL;
+  stream->bytes_avail = 0;
+  stream->cur_buffer = NULL;
+  stream->cur_buffer_consumed = 0;
+
+  stream->cur_pes_payload_size = 0;
+
+  stream->buffer_release = NULL;
+
+  stream->pts = -1;
+  stream->dts = -1;
+  stream->last_pts = -1;
+
+  /* These fields are set by gstreamer */
+  stream->audio_sampling = 0;
+  stream->audio_channels = 0;
+  stream->audio_bitrate = 0;
+
+  if (stream->max_buffer_size == 0) {
+    /* XXX: VLC'S VALUE. Better default? */
+    if (stream->is_video_stream)
+      stream->max_buffer_size = 400 * 1024;
+    else if (stream->is_audio_stream)
+      stream->max_buffer_size = 4 * 1024;
+    else                        /* Unknown */
+      stream->max_buffer_size = 4 * 1024;
+  }
+
+  return stream;
+}
+
+/**
+ * psmux_stream_free:
+ * @stream: a #PsMuxStream
+ *
+ * Free the resources of @stream.
+ */
+void
+psmux_stream_free (PsMuxStream * stream)
+{
+  g_return_if_fail (stream != NULL);
+
+  if (psmux_stream_bytes_in_buffer (stream)) {
+    g_warning ("Freeing stream with data not yet processed");
+  }
+  g_slice_free (PsMuxStream, stream);
+}
+
+/**
+ * psmux_stream_set_buffer_release_func:
+ * @stream: a #PsMuxStream
+ * @func: the new #PsMuxStreamBufferReleaseFunc
+ *
+ * Set the function that will be called when a a piece of data fed to @stream
+ * with psmux_stream_add_data() can be freed. @func will be called with user
+ * data as provided with the call to psmux_stream_add_data().
+ */
+void
+psmux_stream_set_buffer_release_func (PsMuxStream * stream,
+    PsMuxStreamBufferReleaseFunc func)
+{
+  g_return_if_fail (stream != NULL);
+
+  stream->buffer_release = func;
+}
+
+/* Advance the current packet stream position by len bytes.
+ * Mustn't consume more than available in the current packet */
+static void
+psmux_stream_consume (PsMuxStream * stream, guint len)
+{
+  g_assert (stream->cur_buffer != NULL);
+  g_assert (len <= stream->cur_buffer->size - stream->cur_buffer_consumed);
+
+  stream->cur_buffer_consumed += len;
+  stream->bytes_avail -= len;
+
+  if (stream->cur_buffer_consumed == 0)
+    return;
+
+  if (stream->cur_buffer->pts != -1)
+    stream->last_pts = stream->cur_buffer->pts;
+
+  if (stream->cur_buffer_consumed == stream->cur_buffer->size) {
+    /* Current packet is completed, move along */
+    stream->buffers = g_list_delete_link (stream->buffers, stream->buffers);
+
+    if (stream->buffer_release) {
+      stream->buffer_release (stream->cur_buffer->data,
+          stream->cur_buffer->user_data);
+    }
+
+    g_slice_free (PsMuxStreamBuffer, stream->cur_buffer);
+    stream->cur_buffer = NULL;
+  }
+}
+
+
+/**
+ * psmux_stream_bytes_in_buffer:
+ * @stream: a #PsMuxStream
+ *
+ * Calculate how much bytes are in the buffer.
+ *
+ * Returns: The number of bytes in the buffer.
+ */
+gint
+psmux_stream_bytes_in_buffer (PsMuxStream * stream)
+{
+  g_return_val_if_fail (stream != NULL, 0);
+
+  return stream->bytes_avail;
+}
+
+/**
+ * psmux_stream_get_data:
+ * @stream: a #PsMuxStream
+ * @buf: a buffer to hold the result
+ * @len: the length of @buf
+ *
+ * Write a PES packet to @buf, up to @len bytes
+ *
+ * Returns: number of bytes having been written, 0 if error
+ */
+guint
+psmux_stream_get_data (PsMuxStream * stream, guint8 * buf, guint len)
+{
+  guint8 pes_hdr_length;
+  guint w;
+
+  g_return_val_if_fail (stream != NULL, FALSE);
+  g_return_val_if_fail (buf != NULL, FALSE);
+  g_return_val_if_fail (len >= PSMUX_PES_MAX_HDR_LEN, FALSE);
+
+  stream->cur_pes_payload_size =
+      MIN (psmux_stream_bytes_in_buffer (stream), len - PSMUX_PES_MAX_HDR_LEN);
+  /* Note that we cannot make a better estimation of the header length for the
+   * time being; because the header length is dependent on whether we can find a
+   * timestamp in the upcomming buffers, which in turn depends on
+   * cur_pes_payload_size, which is exactly what we want to decide.
+   */
+
+  psmux_stream_find_pts_dts_within (stream, stream->cur_pes_payload_size,
+      &stream->pts, &stream->dts);
+
+  /* clear pts/dts flag */
+  stream->pi.flags &= ~(PSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS |
+      PSMUX_PACKET_FLAG_PES_WRITE_PTS);
+  /* update pts/dts flag */
+  if (stream->pts != -1 && stream->dts != -1)
+    stream->pi.flags |= PSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS;
+  else {
+    if (stream->pts != -1)
+      stream->pi.flags |= PSMUX_PACKET_FLAG_PES_WRITE_PTS;
+  }
+
+  pes_hdr_length = psmux_stream_pes_header_length (stream);
+
+  /* write pes header */
+  PS_DEBUG ("Writing PES header of length %u and payload %d",
+      pes_hdr_length, stream->cur_pes_payload_size);
+  psmux_stream_write_pes_header (stream, buf);
+
+  buf += pes_hdr_length;
+  w = stream->cur_pes_payload_size;     /* number of bytes of payload to write */
+
+  while (w > 0) {
+    guint32 avail;
+    guint8 *cur;
+
+    if (stream->cur_buffer == NULL) {
+      /* Start next packet */
+      if (stream->buffers == NULL)
+        return FALSE;
+      stream->cur_buffer = (PsMuxStreamBuffer *) (stream->buffers->data);
+      stream->cur_buffer_consumed = 0;
+    }
+
+    /* Take as much as we can from the current buffer */
+    avail = stream->cur_buffer->size - stream->cur_buffer_consumed;
+    cur = stream->cur_buffer->data + stream->cur_buffer_consumed;
+    if (avail < w) {
+      memcpy (buf, cur, avail);
+      psmux_stream_consume (stream, avail);
+
+      buf += avail;
+      w -= avail;
+    } else {
+      memcpy (buf, cur, w);
+      psmux_stream_consume (stream, w);
+
+      w = 0;
+    }
+  }
+
+  return pes_hdr_length + stream->cur_pes_payload_size;
+}
+
+static guint8
+psmux_stream_pes_header_length (PsMuxStream * stream)
+{
+  guint8 packet_len;
+
+  /* Calculate the length of the header for this stream */
+
+  /* start_code prefix + stream_id + pes_packet_length = 6 bytes */
+  packet_len = 6;
+
+  if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_FULL_HEADER) {
+    /* For a PES 'full header' we have at least 3 more bytes, 
+     * and then more based on flags */
+    packet_len += 3;
+    if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS) {
+      packet_len += 10;
+    } else if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_WRITE_PTS) {
+      packet_len += 5;
+    }
+    if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_EXT_STREAMID) {
+      /* Need basic extension flags (1 byte), plus 2 more bytes for the 
+       * length + extended stream id */
+      packet_len += 3;
+    }
+  }
+
+  return packet_len;
+}
+
+/* Find a PTS/DTS to write into the pes header within the next bound bytes
+ * of the data */
+static void
+psmux_stream_find_pts_dts_within (PsMuxStream * stream, guint bound,
+    gint64 * pts, gint64 * dts)
+{
+  /* 1. When there are at least one buffer then output the first buffer with
+   * pts/dts
+   * 2. If the bound is too small to include even one buffer, output the pts/dts
+   * of that buffer.
+   */
+  GList *cur;
+
+  *pts = -1;
+  *dts = -1;
+
+  for (cur = g_list_first (stream->buffers); cur != NULL;
+      cur = g_list_next (cur)) {
+    PsMuxStreamBuffer *curbuf = cur->data;
+
+    /* FIXME: This isn't quite correct - if the 'bound' is within this
+     * buffer, we don't know if the timestamp is before or after the split
+     * so we shouldn't return it */
+    if (bound <= curbuf->size) {
+      *pts = curbuf->pts;
+      *dts = curbuf->dts;
+      return;
+    }
+
+    /* Have we found a buffer with pts/dts set? */
+    if (curbuf->pts != -1 || curbuf->dts != -1) {
+      *pts = curbuf->pts;
+      *dts = curbuf->dts;
+      return;
+    }
+
+    bound -= curbuf->size;
+  }
+}
+
+static void
+psmux_stream_write_pes_header (PsMuxStream * stream, guint8 * data)
+{
+  guint16 length_to_write;
+  guint8 hdr_len = psmux_stream_pes_header_length (stream);
+
+  /* start_code prefix + stream_id + pes_packet_length = 6 bytes */
+  data[0] = 0x00;
+  data[1] = 0x00;
+  data[2] = 0x01;
+  data[3] = stream->stream_id;
+  data += 4;
+
+  length_to_write = hdr_len - 6 + stream->cur_pes_payload_size;
+
+  psmux_put16 (&data, length_to_write);
+
+  if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_FULL_HEADER) {
+    guint8 flags = 0;
+
+    /* Not scrambled, original, not-copyrighted, data_alignment specified by flag */
+    flags = 0x81;
+    if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_DATA_ALIGN)
+      flags |= 0x04;            /* Enable data_alignment_indicator */
+    *data++ = flags;
+
+    /* Flags */
+    flags = 0;
+    if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS)
+      flags |= 0xC0;
+    else if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_WRITE_PTS)
+      flags |= 0x80;
+    if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_EXT_STREAMID)
+      flags |= 0x01;            /* Enable PES_extension_flag */
+    *data++ = flags;
+
+    /* Header length is the total pes length, 
+     * minus the 9 bytes of start codes, flags + hdr_len */
+    g_return_if_fail (hdr_len >= 9);
+    *data++ = (hdr_len - 9);
+
+    if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS) {
+      psmux_put_ts (&data, 0x3, stream->pts);
+      psmux_put_ts (&data, 0x1, stream->dts);
+    } else if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_WRITE_PTS) {
+      psmux_put_ts (&data, 0x2, stream->pts);
+    }
+
+    if (stream->pi.flags & PSMUX_PACKET_FLAG_PES_EXT_STREAMID) {
+      guint8 ext_len;
+
+      flags = 0x0f;             /* preceeding flags all 0 | (reserved bits) | PES_extension_flag_2 */
+      *data++ = flags;
+
+      ext_len = 1;              /* Only writing 1 byte into the extended fields */
+      *data++ = 0x80 | ext_len; /* marker | PES_extension_field_length */
+      *data++ = 0x80 | stream->stream_id_ext;   /* stream_id_extension_flag | extended_stream_id */
+    }
+  }
+}
+
+/**
+ * psmux_stream_add_data:
+ * @stream: a #PsMuxStream
+ * @data: data to add
+ * @len: length of @data
+ * @user_data: user data to pass to release func
+ * @pts: PTS of access unit in @data
+ * @dts: DTS of access unit in @data
+ *
+ * Submit @len bytes of @data into @stream. @pts and @dts can be set to the
+ * timestamp (against a 90Hz clock) of the first access unit in @data. A
+ * timestamp of -1 for @pts or @dts means unknown.
+ *
+ * @user_data will be passed to the release function as set with
+ * psmux_stream_set_buffer_release_func() when @data can be freed.
+ */
+void
+psmux_stream_add_data (PsMuxStream * stream, guint8 * data, guint len,
+    void *user_data, gint64 pts, gint64 dts)
+{
+  PsMuxStreamBuffer *packet;
+
+  g_return_if_fail (stream != NULL);
+
+  packet = g_slice_new (PsMuxStreamBuffer);
+  packet->data = data;
+  packet->size = len;
+  packet->user_data = user_data;
+
+  packet->pts = pts;
+  packet->dts = dts;
+
+  if (stream->bytes_avail == 0)
+    stream->last_pts = pts;
+
+  stream->bytes_avail += len;
+  stream->buffers = g_list_append (stream->buffers, packet);
+
+}
+
+/**
+ * psmux_stream_get_es_descrs:
+ * @stream: a #PsMuxStream
+ * @buf: a buffer to hold the ES descriptor
+ * @len: the length used in @buf
+ *
+ * Write an Elementary Stream Descriptor for @stream into @buf. the number of
+ * bytes consumed in @buf will be updated in @len.
+ *
+ * @buf and @len must be at least #PSMUX_MIN_ES_DESC_LEN.
+ */
+void
+psmux_stream_get_es_descrs (PsMuxStream * stream, guint8 * buf, guint16 * len)
+{
+  guint8 *pos;
+
+  g_return_if_fail (stream != NULL);
+
+  if (buf == NULL) {
+    if (len != NULL)
+      *len = 0;
+    return;
+  }
+
+  /* Based on the stream type, write out any descriptors to go in the 
+   * PMT ES_info field */
+  pos = buf;
+
+  /* tag (registration_descriptor), length, format_identifier */
+  switch (stream->stream_type) {
+    case PSMUX_ST_AUDIO_AAC:
+      /* FIXME */
+      break;
+    case PSMUX_ST_VIDEO_MPEG4:
+      /* FIXME */
+      break;
+    case PSMUX_ST_VIDEO_H264:
+      *pos++ = 0x05;
+      *pos++ = 8;
+      *pos++ = 0x48;            /* 'H' */
+      *pos++ = 0x44;            /* 'D' */
+      *pos++ = 0x4D;            /* 'M' */
+      *pos++ = 0x56;            /* 'V' */
+      /* FIXME : Not sure about this additional_identification_info */
+      *pos++ = 0xFF;
+      *pos++ = 0x1B;
+      *pos++ = 0x44;
+      *pos++ = 0x3F;
+      break;
+    case PSMUX_ST_VIDEO_DIRAC:
+      *pos++ = 0x05;
+      *pos++ = 4;
+      *pos++ = 0x64;            /* 'd' */
+      *pos++ = 0x72;            /* 'r' */
+      *pos++ = 0x61;            /* 'a' */
+      *pos++ = 0x63;            /* 'c' */
+      break;
+    case PSMUX_ST_PS_AUDIO_AC3:
+    {
+      *pos++ = 0x05;
+      *pos++ = 4;
+      *pos++ = 0x41;            /* 'A' */
+      *pos++ = 0x43;            /* 'C' */
+      *pos++ = 0x2D;            /* '-' */
+      *pos++ = 0x33;            /* '3' */
+
+      /* audio_stream_descriptor () | ATSC A/52-2001 Annex A
+       *
+       * descriptor_tag       8 uimsbf
+       * descriptor_length    8 uimsbf
+       * sample_rate_code     3 bslbf
+       * bsid                 5 bslbf
+       * bit_rate_code        6 bslbf
+       * surround_mode        2 bslbf
+       * bsmod                3 bslbf
+       * num_channels         4 bslbf
+       * full_svc             1 bslbf
+       * langcod              8 bslbf
+       * [...]
+       */
+      *pos++ = 0x81;
+      *pos++ = 0x04;
+
+      /* 3 bits sample_rate_code, 5 bits hardcoded bsid (default ver 8) */
+      switch (stream->audio_sampling) {
+        case 48000:
+          *pos++ = 0x08;
+          break;
+        case 44100:
+          *pos++ = 0x28;
+          break;
+        case 32000:
+          *pos++ = 0x48;
+          break;
+        default:
+          *pos++ = 0xE8;
+          break;                /* 48, 44.1 or 32 Khz */
+      }
+
+      /* 1 bit bit_rate_limit, 5 bits bit_rate_code, 2 bits suround_mode */
+      switch (stream->audio_bitrate) {
+        case 32:
+          *pos++ = 0x00 << 2;
+          break;
+        case 40:
+          *pos++ = 0x01 << 2;
+          break;
+        case 48:
+          *pos++ = 0x02 << 2;
+          break;
+        case 56:
+          *pos++ = 0x03 << 2;
+          break;
+        case 64:
+          *pos++ = 0x04 << 2;
+          break;
+        case 80:
+          *pos++ = 0x05 << 2;
+          break;
+        case 96:
+          *pos++ = 0x06 << 2;
+          break;
+        case 112:
+          *pos++ = 0x07 << 2;
+          break;
+        case 128:
+          *pos++ = 0x08 << 2;
+          break;
+        case 160:
+          *pos++ = 0x09 << 2;
+          break;
+        case 192:
+          *pos++ = 0x0A << 2;
+          break;
+        case 224:
+          *pos++ = 0x0B << 2;
+          break;
+        case 256:
+          *pos++ = 0x0C << 2;
+          break;
+        case 320:
+          *pos++ = 0x0D << 2;
+          break;
+        case 384:
+          *pos++ = 0x0E << 2;
+          break;
+        case 448:
+          *pos++ = 0x0F << 2;
+          break;
+        case 512:
+          *pos++ = 0x10 << 2;
+          break;
+        case 576:
+          *pos++ = 0x11 << 2;
+          break;
+        case 640:
+          *pos++ = 0x12 << 2;
+          break;
+        default:
+          *pos++ = 0x32 << 2;
+          break;                /* 640 Kb/s upper limit */
+      }
+
+      /* 3 bits bsmod, 4 bits num_channels, 1 bit full_svc */
+      switch (stream->audio_channels) {
+        case 1:
+          *pos++ = 0x01 << 1;
+          break;                /* 1/0 */
+        case 2:
+          *pos++ = 0x02 << 1;
+          break;                /* 2/0 */
+        case 3:
+          *pos++ = 0x0A << 1;
+          break;                /* <= 3 */
+        case 4:
+          *pos++ = 0x0B << 1;
+          break;                /* <= 4 */
+        case 5:
+          *pos++ = 0x0C << 1;
+          break;                /* <= 5 */
+        case 6:
+        default:
+          *pos++ = 0x0D << 1;
+          break;                /* <= 6 */
+      }
+
+      *pos++ = 0x00;
+
+      break;
+    }
+    case PSMUX_ST_PS_AUDIO_DTS:
+      /* FIXME */
+      break;
+    case PSMUX_ST_PS_AUDIO_LPCM:
+      /* FIXME */
+      break;
+    default:
+      break;
+  }
+
+  if (len)
+    *len = (pos - buf);
+}
+
+/**
+ * psmux_stream_get_pts:
+ * @stream: a #PsMuxStream
+ *
+ * Return the PTS of the last buffer that has had bytes written and
+ * which _had_ a PTS in @stream.
+ *
+ * Returns: the PTS of the last buffer in @stream.
+ */
+guint64
+psmux_stream_get_pts (PsMuxStream * stream)
+{
+  g_return_val_if_fail (stream != NULL, -1);
+
+  return stream->last_pts;
+}
--- a/gst/mpegpsmux/psmuxstream.h
+++ b/gst/mpegpsmux/psmuxstream.h
@ -0,0 +1,212 @@
+/* MPEG-PS muxer plugin for GStreamer
+ * Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
+ *
+ * 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.
+ */
+/*
+ * Unless otherwise indicated, Source Code is licensed under MIT license.
+ * See further explanation attached in License Statement (distributed in the file
+ * LICENSE).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+
+#ifndef __PSMUXSTREAM_H__
+#define __PSMUXSTREAM_H__
+
+#include <glib.h>
+
+#include "psmuxcommon.h"
+
+G_BEGIN_DECLS
+
+
+typedef void (*PsMuxStreamBufferReleaseFunc) (guint8 *data, void *user_data);
+
+enum PsMuxStreamType { /* Table 2-29 in spec */
+  PSMUX_ST_RESERVED                   = 0x00,
+  PSMUX_ST_VIDEO_MPEG1                = 0x01,
+  PSMUX_ST_VIDEO_MPEG2                = 0x02,
+  PSMUX_ST_AUDIO_MPEG1                = 0x03,
+  PSMUX_ST_AUDIO_MPEG2                = 0x04,
+  PSMUX_ST_PRIVATE_SECTIONS           = 0x05,
+  PSMUX_ST_PRIVATE_DATA               = 0x06,
+  PSMUX_ST_MHEG                       = 0x07,
+  PSMUX_ST_DSMCC                      = 0x08,
+  PSMUX_ST_H222_1                     = 0x09,
+
+  /* later extensions */
+  PSMUX_ST_AUDIO_AAC                  = 0x0f,
+  PSMUX_ST_VIDEO_MPEG4                = 0x10,
+  PSMUX_ST_VIDEO_H264                 = 0x1b,
+
+  /* private stream types */
+  PSMUX_ST_PS_AUDIO_AC3               = 0x81,
+  PSMUX_ST_PS_AUDIO_DTS               = 0x8a,
+  PSMUX_ST_PS_AUDIO_LPCM              = 0x8b,
+  PSMUX_ST_PS_DVD_SUBPICTURE          = 0xff,
+
+  /* Non-standard definitions */
+  PSMUX_ST_VIDEO_DIRAC                = 0xD1
+};
+
+struct PsMuxStreamBuffer
+{
+  guint8 *data;
+  guint32 size;
+
+  /* PTS & DTS associated with the contents of this buffer */
+  GstClockTime pts;
+  GstClockTime dts;
+
+  void *user_data;
+};
+
+/* PsMuxStream receives elementary streams for parsing.
+ * Via the write_bytes() method, it can output a PES stream piecemeal */
+struct PsMuxStream{
+  PsMuxPacketInfo pi;
+
+  PsMuxStreamType stream_type;
+  guint8 stream_id;
+  guint8 stream_id_ext; /* extended stream id (13818-1 Amdt 2) */
+
+  /* List of data buffers available for writing out */
+  GList *buffers;
+  guint32 bytes_avail;
+
+  /* Current data buffer being consumed */
+  PsMuxStreamBuffer *cur_buffer;
+  guint32 cur_buffer_consumed;
+
+  /* PES payload */
+  guint16 cur_pes_payload_size;
+  guint16 pes_bytes_written; /* delete*/
+
+  /* Release function */
+  PsMuxStreamBufferReleaseFunc buffer_release;
+
+  /* PTS/DTS to write if the flags in the packet info are set */
+  gint64 pts; /* TODO: cur_buffer->pts?*/
+  gint64 dts; /* TODO: cur_buffer->dts?*/
+  gint64 last_pts;
+
+  /* stream type */
+  gboolean is_video_stream;
+  gboolean is_audio_stream;
+
+  /* for writing descriptors */
+  gint audio_sampling;
+  gint audio_channels;
+  gint audio_bitrate;
+
+  /* for writing buffer size in system header */
+  guint max_buffer_size;
+};
+
+/* stream management */
+PsMuxStream*    psmux_stream_new                (PsMux * mux, PsMuxStreamType stream_type);
+void 		psmux_stream_free 		(PsMuxStream *stream);
+
+/* The callback when a buffer is released. Used to unref the buffer in GStreamer */
+void 		psmux_stream_set_buffer_release_func 	(PsMuxStream *stream,
+       							 PsMuxStreamBufferReleaseFunc func);
+
+/* Add a new buffer to the pool of available bytes. If pts or dts are not -1, they
+ * indicate the PTS or DTS of the first access unit within this packet */
+void 		psmux_stream_add_data 		(PsMuxStream *stream, guint8 *data, guint len,
+       						 void *user_data, gint64 pts, gint64 dts);
+
+/* total bytes in buffer */
+gint 		psmux_stream_bytes_in_buffer 	(PsMuxStream *stream);
+/* number of bytes of raw data available for writing */
+gint 		psmux_stream_bytes_avail 	(PsMuxStream *stream);
+
+/* write PES data */
+guint	 	psmux_stream_get_data 		(PsMuxStream *stream, guint8 *buf, guint len);
+
+/* write corresponding descriptors of the stream */
+void 		psmux_stream_get_es_descrs 	(PsMuxStream *stream, guint8 *buf, guint16 *len);
+
+/* get the pts of stream */
+guint64 	psmux_stream_get_pts 		(PsMuxStream *stream);
+
+/* stream_id assignemnt */
+#define PSMUX_STREAM_ID_MPGA_INIT       0xc0
+#define PSMUX_STREAM_ID_MPGA_MAX        0xcf
+
+#define PSMUX_STREAM_ID_MPGV_INIT       0xe0
+#define PSMUX_STREAM_ID_MPGV_MAX        0xef
+
+#define PSMUX_STREAM_ID_AC3_INIT        0x80
+#define PSMUX_STREAM_ID_AC3_MAX         0x87
+
+#define PSMUX_STREAM_ID_SPU_INIT        0x20
+#define PSMUX_STREAM_ID_SPU_MAX        	0x3f
+
+#define PSMUX_STREAM_ID_DTS_INIT        0x88
+#define PSMUX_STREAM_ID_DTS_MAX         0x8f
+
+#define PSMUX_STREAM_ID_LPCM_INIT       0xa0
+#define PSMUX_STREAM_ID_LPCM_MAX        0xaf
+
+#define PSMUX_STREAM_ID_DIRAC_INIT      0x60
+#define PSMUX_STREAM_ID_DIRAC_MAX       0x6f
+
+struct PsMuxStreamIdInfo {
+    guint8 id_mpga;
+    guint8 id_mpgv;
+    guint8 id_ac3;
+    guint8 id_spu;
+    guint8 id_dts;
+    guint8 id_lpcm;
+    guint8 id_dirac;
+};
+
+static inline void
+psmux_stream_id_info_init (PsMuxStreamIdInfo * info)
+{
+    g_return_if_fail (info != NULL);
+    info->id_mpga = PSMUX_STREAM_ID_MPGA_INIT;
+    info->id_mpgv = PSMUX_STREAM_ID_MPGV_INIT;
+    info->id_ac3  = PSMUX_STREAM_ID_AC3_INIT;
+    info->id_spu  = PSMUX_STREAM_ID_SPU_INIT;
+    info->id_dts  = PSMUX_STREAM_ID_DTS_INIT;
+    info->id_lpcm = PSMUX_STREAM_ID_LPCM_INIT;
+    info->id_dirac= PSMUX_STREAM_ID_DIRAC_INIT;
+}
+
+G_END_DECLS
+
+#endif