[MOVED FROM BAD 01/28] Add libx264-based h264 encoder plugin (#421110). Probably doesn't handle 'odd' widths and heights correctly yet.

Original commit message from CVS:
Patch by: Michal Benes <michal.benes at itonis tv>
Patch by: Josef Zlomek <josef.zlomek at itonis tv>
* configure.ac:
* ext/Makefile.am:
* ext/x264/Makefile.am:
* ext/x264/gstx264enc.c: (gst_x264_enc_me_get_type),
(gst_x264_enc_analyse_get_type),
(gst_x264_enc_timestamp_queue_init),
(gst_x264_enc_timestamp_queue_free),
(gst_x264_enc_timestamp_queue_put),
(gst_x264_enc_timestamp_queue_get), (gst_x264_enc_header_buf),
(gst_x264_enc_set_src_caps), (gst_x264_enc_sink_set_caps),
(gst_x264_enc_base_init), (gst_x264_enc_class_init),
(gst_x264_enc_init), (gst_x264_enc_init_encoder),
(gst_x264_enc_close_encoder), (gst_x264_enc_dispose),
(gst_x264_enc_sink_event), (gst_x264_enc_chain),
(gst_x264_enc_encode_frame), (gst_x264_enc_change_state),
(gst_x264_enc_set_property), (gst_x264_enc_get_property),
(plugin_init):
* ext/x264/gstx264enc.h:
Add libx264-based h264 encoder plugin (#421110). Probably doesn't
handle 'odd' widths and heights correctly yet.

3 files changed, 1158 insertions, 0 deletions

diff --git a/ext/x264/Makefile.am b/ext/x264/Makefile.am
new file mode 100644
index 00000000..35906d93
--- /dev/null
+++ b/ext/x264/Makefile.am
@@ -0,0 +1,8 @@
+plugin_LTLIBRARIES = libgstx264.la
+
+libgstx264_la_SOURCES = gstx264enc.c
+libgstx264_la_CFLAGS = $(X264_CFLAGS) $(GST_CFLAGS)
+libgstx264_la_LIBADD = $(X264_LIBS) $(GST_LIBS)
+libgstx264_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+
+noinst_HEADERS = gstx264enc.h
diff --git a/ext/x264/gstx264enc.c b/ext/x264/gstx264enc.c
new file mode 100644
index 00000000..5105f98d
--- /dev/null
+++ b/ext/x264/gstx264enc.c
@@ -0,0 +1,1053 @@
+/* GStreamer H264 encoder plugin
+ * Copyright (C) 2005 Michal Benes <michal.benes@itonis.tv>
+ * Copyright (C) 2005 Josef Zlomek <josef.zlomek@itonis.tv>
+ *
+ * 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 "gstx264enc.h"
+
+#include <string.h>
+
+enum
+{
+  ARG_0,
+  ARG_THREADS,
+  ARG_PASS,
+  ARG_STATS_FILE,
+  ARG_BYTE_STREAM,
+  ARG_BITRATE,
+  ARG_VBV_BUF_CAPACITY,
+  ARG_ME,
+  ARG_SUBME,
+  ARG_ANALYSE,
+  ARG_DCT8x8,
+  ARG_REF,
+  ARG_BFRAMES,
+  ARG_B_PYRAMID,
+  ARG_WEIGHTB,
+  ARG_SPS_ID,
+  ARG_TRELLIS,
+  ARG_KEYINT_MAX,
+  ARG_CABAC
+};
+
+#define ARG_THREADS_DEFAULT 1
+#define ARG_PASS_DEFAULT 0
+#define ARG_STATS_FILE_DEFAULT "x264.log"
+#define ARG_BYTE_STREAM_DEFAULT FALSE
+#define ARG_BITRATE_DEFAULT (2 * 1024)
+#define ARG_VBV_BUF_CAPACITY_DEFAULT 600
+#define ARG_ME_DEFAULT X264_ME_HEX
+#define ARG_SUBME_DEFAULT 1
+#define ARG_ANALYSE_DEFAULT 0
+#define ARG_DCT8x8_DEFAULT FALSE
+#define ARG_REF_DEFAULT 1
+#define ARG_BFRAMES_DEFAULT 0
+#define ARG_B_PYRAMID_DEFAULT FALSE
+#define ARG_WEIGHTB_DEFAULT FALSE
+#define ARG_SPS_ID_DEFAULT 0
+#define ARG_TRELLIS_DEFAULT TRUE
+#define ARG_KEYINT_MAX_DEFAULT 0
+#define ARG_CABAC_DEFAULT TRUE
+
+#define GST_X264_ENC_ME_TYPE (gst_x264_enc_me_get_type())
+static GType
+gst_x264_enc_me_get_type (void)
+{
+  static GType me_type = 0;
+  static const GEnumValue me_types[] = {
+    {X264_ME_DIA, "diamond search, radius 1 (fast)", "dia"},
+    {X264_ME_HEX, "hexagonal search, radius 2", "hex"},
+    {X264_ME_UMH, "uneven multi-hexagon search", "umh"},
+    {X264_ME_ESA, "exhaustive search (slow)", "esa"},
+    {0, NULL, NULL}
+  };
+
+  if (!me_type) {
+    me_type = g_enum_register_static ("GstX264EncMe", me_types);
+  }
+  return me_type;
+}
+
+#define GST_X264_ENC_ANALYSE_TYPE (gst_x264_enc_analyse_get_type())
+static GType
+gst_x264_enc_analyse_get_type (void)
+{
+  static GType analyse_type = 0;
+  static const GFlagsValue analyse_types[] = {
+    {X264_ANALYSE_I4x4, "i4x4", "i4x4"},
+    {X264_ANALYSE_I8x8, "i8x8", "i8x8"},
+    {X264_ANALYSE_PSUB16x16, "p8x8", "p8x8"},
+    {X264_ANALYSE_PSUB8x8, "p4x4", "p4x4"},
+    {X264_ANALYSE_BSUB16x16, "b8x8", "b8x8"},
+    {0, NULL, NULL},
+  };
+
+  if (!analyse_type) {
+    analyse_type = g_flags_register_static ("GstX264EncAnalyse", analyse_types);
+  }
+  return analyse_type;
+}
+
+static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-raw-yuv, "
+        "format = (fourcc) I420, "
+        "framerate = (fraction) [0, MAX], "
+        "width = (int) [ 16, MAX ], " "height = (int) [ 16, MAX ]")
+    );
+
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-h264")
+    );
+
+GST_BOILERPLATE (GstX264Enc, gst_x264_enc, GstElement, GST_TYPE_ELEMENT);
+
+static void gst_x264_enc_dispose (GObject * object);
+
+static gboolean gst_x264_enc_init_encoder (GstX264Enc * encoder);
+static void gst_x264_enc_close_encoder (GstX264Enc * encoder);
+
+static gboolean gst_x264_enc_sink_event (GstPad * pad, GstEvent * event);
+static GstFlowReturn gst_x264_enc_chain (GstPad * pad, GstBuffer * buf);
+static GstFlowReturn gst_x264_enc_encode_frame (GstX264Enc * encoder,
+    x264_picture_t * pic_in, int *i_nal);
+static GstStateChangeReturn gst_x264_enc_change_state (GstElement * element,
+    GstStateChange transition);
+
+static void gst_x264_enc_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_x264_enc_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static void
+gst_x264_enc_timestamp_queue_init (GstX264Enc * encoder)
+{
+  encoder->timestamp_queue_size = (2 + encoder->bframes + encoder->threads) * 2;
+  encoder->timestamp_queue_head = 0;
+  encoder->timestamp_queue_tail = 0;
+  encoder->timestamp_queue =
+      g_new (GstClockTime, encoder->timestamp_queue_size);
+  encoder->timestamp_queue_dur =
+      g_new (GstClockTime, encoder->timestamp_queue_size);
+}
+
+static void
+gst_x264_enc_timestamp_queue_free (GstX264Enc * encoder)
+{
+  if (encoder->timestamp_queue) {
+    g_free (encoder->timestamp_queue);
+    encoder->timestamp_queue = NULL;
+  }
+  if (encoder->timestamp_queue_dur) {
+    g_free (encoder->timestamp_queue_dur);
+    encoder->timestamp_queue_dur = NULL;
+  }
+
+  encoder->timestamp_queue_size = 0;
+  encoder->timestamp_queue_head = 0;
+  encoder->timestamp_queue_tail = 0;
+}
+
+static void
+gst_x264_enc_timestamp_queue_put (GstX264Enc * encoder, GstClockTime clock_time,
+    GstClockTime duration)
+{
+  encoder->timestamp_queue[encoder->timestamp_queue_tail] = clock_time;
+  encoder->timestamp_queue_dur[encoder->timestamp_queue_tail] = duration;
+  encoder->timestamp_queue_tail++;
+  encoder->timestamp_queue_tail %= encoder->timestamp_queue_size;
+
+  if (encoder->timestamp_queue_tail == encoder->timestamp_queue_head) {
+    GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
+        ("Timestamp queue overflow."), ("FIX CODE"));
+  }
+}
+
+static void
+gst_x264_enc_timestamp_queue_get (GstX264Enc * encoder,
+    GstClockTime * clock_time, GstClockTime * duration)
+{
+  if (encoder->timestamp_queue_head == encoder->timestamp_queue_tail) {
+    GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
+        ("Timestamp queue empty or after overflow."), ("FIX CODE"));
+    *clock_time = GST_CLOCK_TIME_NONE;
+    *duration = GST_CLOCK_TIME_NONE;
+    return;
+  }
+
+  *clock_time = encoder->timestamp_queue[encoder->timestamp_queue_head];
+  *duration = encoder->timestamp_queue_dur[encoder->timestamp_queue_head];
+  encoder->timestamp_queue_head++;
+  encoder->timestamp_queue_head %= encoder->timestamp_queue_size;
+}
+
+/*
+ * Returns: Buffer with the stream headers.
+ */
+static GstBuffer *
+gst_x264_enc_header_buf (GstX264Enc * encoder)
+{
+  GstBuffer *buf;
+  x264_nal_t *nal;
+  int i_nal;
+  int header_return;
+  int i_size;
+  int nal_size, i_data;
+  guint8 *buffer, *sps;
+  gulong buffer_size;
+
+  /* Create avcC header. */
+
+  header_return = x264_encoder_headers (encoder->x264enc, &nal, &i_nal);
+  if (header_return < 0) {
+    GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
+        ("Encode x264 header failed."),
+        ("x264_encoder_headers return code=%d", header_return));
+    return NULL;
+  }
+
+  /* This should be enough for a header buffer. */
+  buffer_size = 100000;
+  buffer = g_malloc (buffer_size);
+
+  if (nal[1].i_type != 7 || nal[2].i_type != 8) {
+    GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
+        ("Unexpected x264 header."),
+        ("TODO avcC header construction for high profiles needs some work"));
+    return NULL;
+  }
+
+  sps = nal[1].p_payload;
+
+  buffer[0] = 1;                /* AVC Decoder Configuration Record ver. 1 */
+  buffer[1] = sps[0];           /* profile_idc                             */
+  buffer[2] = sps[1];           /* profile_compability                     */
+  buffer[3] = sps[2];           /* level_idc                               */
+  buffer[4] = 0xfc | (4 - 1);   /* nal_length_size_minus1                  */
+
+  i_size = 5;
+
+  buffer[i_size++] = 0xe0 | 1;  /* number of SPSs */
+
+  i_data = buffer_size - i_size - 2;
+  nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[1]);
+  buffer[i_size + 0] = (nal_size >> 8) & 0xff;
+  buffer[i_size + 1] = nal_size & 0xff;
+  i_size += nal_size + 2;
+
+  buffer[i_size++] = 1;         /* number of PPSs */
+
+  i_data = buffer_size - i_size - 2;
+  nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[2]);
+  buffer[i_size + 0] = (nal_size >> 8) & 0xff;
+  buffer[i_size + 1] = nal_size & 0xff;
+  i_size += nal_size + 2;
+
+  buf = gst_buffer_new_and_alloc (i_size);
+
+  memcpy (GST_BUFFER_DATA (buf), buffer, i_size);
+
+  free (buffer);
+
+  return buf;
+}
+
+/* gst_x264_enc_set_src_caps
+ * Returns: TRUE on success.
+ */
+static gboolean
+gst_x264_enc_set_src_caps (GstX264Enc * encoder, GstPad * pad, GstCaps * caps)
+{
+  GstStructure *structure;
+  GValue header = { 0, };
+  GstBuffer *buf;
+
+  structure = gst_caps_get_structure (caps, 0);
+  structure = gst_structure_copy (structure);
+  gst_structure_set_name (structure, "video/x-h264");
+
+  if (!encoder->byte_stream) {
+    buf = gst_x264_enc_header_buf (encoder);
+    if (buf != NULL) {
+      GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
+      g_value_init (&header, GST_TYPE_BUFFER);
+      gst_value_set_buffer (&header, buf);
+      gst_structure_set_value (structure, "codec_data", &header);
+      g_value_unset (&header);
+    }
+  }
+
+  /* FIXME: doesn't this leak? (tpm) */
+  return gst_pad_set_caps (pad, gst_caps_new_full (structure, NULL));
+}
+
+static gboolean
+gst_x264_enc_sink_set_caps (GstPad * pad, GstCaps * caps)
+{
+  GstX264Enc *encoder = GST_X264_ENC (GST_OBJECT_PARENT (pad));
+  GstStructure *structure;
+  const GValue *framerate, *par;
+  gint width, height;
+  gint framerate_num, framerate_den;
+  gint par_num, par_den;
+
+  structure = gst_caps_get_structure (caps, 0);
+  if (!gst_structure_get_int (structure, "width", &width))
+    return FALSE;
+  if (!gst_structure_get_int (structure, "height", &height))
+    return FALSE;
+  if (!(framerate = gst_structure_get_value (structure, "framerate")))
+    return FALSE;
+  framerate_num = gst_value_get_fraction_numerator (framerate);
+  framerate_den = gst_value_get_fraction_denominator (framerate);
+  if (!(par = gst_structure_get_value (structure, "pixel-aspect-ratio"))) {
+    par_num = 1;
+    par_den = 1;
+  } else {
+    par_num = gst_value_get_fraction_numerator (par);
+    par_den = gst_value_get_fraction_denominator (par);
+  }
+
+  /* If the encoder is initialized, do not
+     reinitialize it again if not necessary */
+  if (encoder->x264enc) {
+    gboolean caps_same = width == encoder->width
+        && height == encoder->height
+        && framerate_num == encoder->framerate_num
+        && framerate_den == encoder->framerate_den
+        && par_num == encoder->par_num && par_den == encoder->par_den;
+
+    GstFlowReturn flow_ret;
+    int i_nal;
+
+    if (caps_same)
+      /* Negotiating the same caps */
+      return TRUE;
+
+    do {
+      flow_ret = gst_x264_enc_encode_frame (encoder, NULL, &i_nal);
+    } while (flow_ret == GST_FLOW_OK && i_nal > 0);
+
+    encoder->sps_id++;
+  }
+  encoder->width = width;
+  encoder->height = height;
+  encoder->framerate_num = framerate_num;
+  encoder->framerate_den = framerate_den;
+  encoder->par_num = par_num;
+  encoder->par_den = par_den;
+
+  /* FIXME: is this correct for odd widths/heights? (tpm) */
+  encoder->stride = encoder->width;
+  encoder->luma_plane_size = encoder->width * encoder->height;
+
+  if (!gst_x264_enc_init_encoder (encoder))
+    return FALSE;
+
+  if (!gst_x264_enc_set_src_caps (encoder, encoder->srcpad, caps)) {
+    gst_x264_enc_close_encoder (encoder);
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+static void
+gst_x264_enc_base_init (gpointer g_class)
+{
+  static GstElementDetails plugin_details = {
+    "x264enc",
+    "Codec/Encoder/Video",
+    "H264 Encoder",
+    "Josef Zlomek <josef.zlomek@itonis.tv>"
+  };
+  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
+  gst_element_class_set_details (element_class, &plugin_details);
+}
+
+static void
+gst_x264_enc_class_init (GstX264EncClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+
+  gobject_class->set_property = gst_x264_enc_set_property;
+  gobject_class->get_property = gst_x264_enc_get_property;
+  gobject_class->dispose = gst_x264_enc_dispose;
+
+  gstelement_class->change_state =
+      GST_DEBUG_FUNCPTR (gst_x264_enc_change_state);
+
+  g_object_class_install_property (gobject_class, ARG_THREADS,
+      g_param_spec_uint ("threads", "Threads",
+          "Number of threads used by the codec", 1, 4, ARG_THREADS_DEFAULT,
+          G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_PASS,
+      g_param_spec_uint ("pass", "Pass",
+          "Pass of multipass encoding (0=single pass; 1=first pass, 2=middle pass, 3=last pass)",
+          0, 3, ARG_PASS_DEFAULT, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_STATS_FILE,
+      g_param_spec_string ("stats_file", "Stats File",
+          "Filename for multipass statistics", ARG_STATS_FILE_DEFAULT,
+          G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_BYTE_STREAM,
+      g_param_spec_boolean ("byte_stream", "Byte Stream",
+          "Generate byte stream format of NALU", ARG_BYTE_STREAM_DEFAULT,
+          G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_BITRATE,
+      g_param_spec_uint ("bitrate", "Bitrate", "Bitrate in kbit/sec", 1,
+          100 * 1024, ARG_BITRATE_DEFAULT, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_VBV_BUF_CAPACITY,
+      g_param_spec_uint ("vbv_buf_capacity", "VBV buffer capacity",
+          "Size of the VBV buffer in milliseconds", 300,
+          10000, ARG_VBV_BUF_CAPACITY_DEFAULT, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_ME,
+      g_param_spec_enum ("me", "Motion Estimation",
+          "Integer pixel motion estimation method", GST_X264_ENC_ME_TYPE,
+          ARG_ME_DEFAULT, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_SUBME,
+      g_param_spec_uint ("subme", "Subpixel Motion Estimation",
+          "Subpixel motion estimation and partition decision quality: 1=fast, 6=best",
+          1, 6, ARG_SUBME_DEFAULT, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_ANALYSE,
+      g_param_spec_flags ("analyse", "Analyse", "Partitions to consider",
+          GST_X264_ENC_ANALYSE_TYPE, ARG_ANALYSE_DEFAULT, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_DCT8x8,
+      g_param_spec_boolean ("dct8x8", "DCT8x8",
+          "Adaptive spatial transform size", ARG_DCT8x8_DEFAULT,
+          G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_REF,
+      g_param_spec_uint ("ref", "Reference Frames",
+          "Number of reference frames", 1, 12, ARG_REF_DEFAULT,
+          G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_BFRAMES,
+      g_param_spec_uint ("bframes", "B-Frames",
+          "Number of B-frames between I and P", 0, 4, ARG_BFRAMES_DEFAULT,
+          G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_B_PYRAMID,
+      g_param_spec_boolean ("b_pyramid", "B-Pyramid",
+          "Keep some B-frames as references", ARG_B_PYRAMID_DEFAULT,
+          G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_WEIGHTB,
+      g_param_spec_boolean ("weightb", "Weighted B-Frames",
+          "Weighted prediction for B-frames", ARG_WEIGHTB_DEFAULT,
+          G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_SPS_ID,
+      g_param_spec_uint ("sps_id", "SPS ID",
+          "SPS and PPS ID number", 0, 31, ARG_SPS_ID_DEFAULT,
+          G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_TRELLIS,
+      g_param_spec_boolean ("trellis", "Trellis quantization",
+          "Enable trellis searched quantization", ARG_TRELLIS_DEFAULT,
+          G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_KEYINT_MAX,
+      g_param_spec_uint ("key_int_max", "Key-frame maximal interval",
+          "Maximal distance between two key-frames (0 for automatic)", 0,
+          G_MAXINT, ARG_KEYINT_MAX_DEFAULT, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_CABAC,
+      g_param_spec_boolean ("cabac", "Use CABAC",
+          "Enable CABAC entropy coding", ARG_CABAC_DEFAULT, G_PARAM_READWRITE));
+}
+
+/* initialize the new element
+ * instantiate pads and add them to element
+ * set functions
+ * initialize structure
+ */
+static void
+gst_x264_enc_init (GstX264Enc * encoder, GstX264EncClass * klass)
+{
+  encoder->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
+  gst_pad_set_setcaps_function (encoder->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_x264_enc_sink_set_caps));
+  gst_pad_set_event_function (encoder->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_x264_enc_sink_event));
+  gst_pad_set_chain_function (encoder->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_x264_enc_chain));
+  gst_element_add_pad (GST_ELEMENT (encoder), encoder->sinkpad);
+
+  encoder->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
+  gst_pad_use_fixed_caps (encoder->srcpad);
+  gst_element_add_pad (GST_ELEMENT (encoder), encoder->srcpad);
+
+  /* initialize internals */
+  encoder->x264enc = NULL;
+
+  encoder->width = 16;
+  encoder->height = 16;
+
+  encoder->threads = ARG_THREADS_DEFAULT;
+  encoder->pass = ARG_PASS_DEFAULT;
+  encoder->stats_file = g_strdup (ARG_STATS_FILE_DEFAULT);
+  encoder->byte_stream = ARG_BYTE_STREAM_DEFAULT;
+  encoder->bitrate = ARG_BITRATE_DEFAULT;
+  encoder->vbv_buf_capacity = ARG_VBV_BUF_CAPACITY_DEFAULT;
+  encoder->me = ARG_ME_DEFAULT;
+  encoder->subme = ARG_SUBME_DEFAULT;
+  encoder->analyse = ARG_ANALYSE_DEFAULT;
+  encoder->dct8x8 = ARG_DCT8x8_DEFAULT;
+  encoder->ref = ARG_REF_DEFAULT;
+  encoder->bframes = ARG_BFRAMES_DEFAULT;
+  encoder->b_pyramid = ARG_B_PYRAMID_DEFAULT;
+  encoder->weightb = ARG_WEIGHTB_DEFAULT;
+  encoder->sps_id = ARG_SPS_ID_DEFAULT;
+  encoder->trellis = ARG_TRELLIS_DEFAULT;
+  encoder->keyint_max = ARG_KEYINT_MAX_DEFAULT;
+  encoder->cabac = ARG_CABAC_DEFAULT;
+
+  encoder->last_timestamp = GST_CLOCK_TIME_NONE;
+  gst_x264_enc_timestamp_queue_init (encoder);
+
+  encoder->buffer_size = 1040000;
+  encoder->buffer = g_malloc (encoder->buffer_size);
+
+  x264_param_default (&encoder->x264param);
+}
+
+/*
+ * gst_x264_enc_init_encoder
+ * @encoder:  Encoder which should be initialized.
+ *
+ * Initialize x264 encoder.
+ *
+ */
+static gboolean
+gst_x264_enc_init_encoder (GstX264Enc * encoder)
+{
+  /* make sure that the encoder is closed */
+  gst_x264_enc_close_encoder (encoder);
+
+  /* set up encoder parameters */
+  encoder->x264param.i_threads = encoder->threads;
+  encoder->x264param.i_fps_num = encoder->framerate_num;
+  encoder->x264param.i_fps_den = encoder->framerate_den;
+  encoder->x264param.i_width = encoder->width;
+  encoder->x264param.i_height = encoder->height;
+  if (encoder->par_den > 0) {
+    encoder->x264param.vui.i_sar_width = encoder->par_num;
+    encoder->x264param.vui.i_sar_height = encoder->par_den;
+  }
+  encoder->x264param.i_keyint_max = encoder->keyint_max ? encoder->keyint_max :
+      (2 * encoder->framerate_num / encoder->framerate_den);
+  encoder->x264param.b_cabac = encoder->cabac;
+  encoder->x264param.b_aud = 1;
+  encoder->x264param.i_sps_id = encoder->sps_id;
+  if ((((encoder->height == 576) && ((encoder->width == 720)
+                  || (encoder->width == 704) || (encoder->width == 352)))
+          || ((encoder->height == 288) && (encoder->width == 352)))
+      && (encoder->framerate_den == 1) && (encoder->framerate_num == 25)) {
+    encoder->x264param.vui.i_vidformat = 1;     /* PAL */
+  } else if ((((encoder->height == 480) && ((encoder->width == 720)
+                  || (encoder->width == 704) || (encoder->width == 352)))
+          || ((encoder->height == 240) && (encoder->width == 352)))
+      && (encoder->framerate_den == 1001) && ((encoder->framerate_num == 30000)
+          || (encoder->framerate_num == 24000))) {
+    encoder->x264param.vui.i_vidformat = 2;     /* NTSC */
+  } else
+    encoder->x264param.vui.i_vidformat = 5;     /* unspecified */
+  encoder->x264param.analyse.i_trellis = encoder->trellis ? 1 : 0;
+  encoder->x264param.analyse.b_psnr = 0;
+  encoder->x264param.analyse.b_ssim = 0;
+  encoder->x264param.analyse.i_me_method = encoder->me;
+  encoder->x264param.analyse.i_subpel_refine = encoder->subme;
+  encoder->x264param.analyse.inter = encoder->analyse;
+  encoder->x264param.analyse.b_transform_8x8 = encoder->dct8x8;
+  encoder->x264param.analyse.b_weighted_bipred = encoder->weightb;
+  /*encoder->x264param.analyse.i_noise_reduction = 600; */
+  encoder->x264param.i_frame_reference = encoder->ref;
+  encoder->x264param.i_bframe = encoder->bframes;
+  encoder->x264param.b_bframe_pyramid = encoder->b_pyramid;
+  encoder->x264param.b_bframe_adaptive = 0;
+  encoder->x264param.b_deblocking_filter = 1;
+  encoder->x264param.i_deblocking_filter_alphac0 = 0;
+  encoder->x264param.i_deblocking_filter_beta = 0;
+  encoder->x264param.rc.i_rc_method = X264_RC_ABR;
+  encoder->x264param.rc.i_bitrate = encoder->bitrate;
+  encoder->x264param.rc.i_vbv_max_bitrate = encoder->bitrate;
+  encoder->x264param.rc.i_vbv_buffer_size
+      = encoder->x264param.rc.i_vbv_max_bitrate
+      * encoder->vbv_buf_capacity / 1000;
+
+  switch (encoder->pass) {
+    case 0:
+      encoder->x264param.rc.b_stat_read = 0;
+      encoder->x264param.rc.b_stat_write = 0;
+      break;
+    case 1:
+      /* Turbo mode parameters. */
+      encoder->x264param.i_frame_reference = (encoder->ref + 1) >> 1;
+      encoder->x264param.analyse.i_subpel_refine =
+          CLAMP (encoder->subme - 1, 1, 3);
+      encoder->x264param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
+      encoder->x264param.analyse.inter &= ~X264_ANALYSE_BSUB16x16;
+      encoder->x264param.analyse.i_trellis = 0;
+
+      encoder->x264param.rc.b_stat_read = 0;
+      encoder->x264param.rc.b_stat_write = 1;
+      break;
+    case 2:
+      encoder->x264param.rc.b_stat_read = 1;
+      encoder->x264param.rc.b_stat_write = 1;
+      break;
+    case 3:
+      encoder->x264param.rc.b_stat_read = 1;
+      encoder->x264param.rc.b_stat_write = 0;
+      break;
+  }
+  encoder->x264param.rc.psz_stat_in = encoder->stats_file;
+  encoder->x264param.rc.psz_stat_out = encoder->stats_file;
+
+  encoder->x264enc = x264_encoder_open (&encoder->x264param);
+  if (!encoder->x264enc) {
+    GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
+        ("Can not initialize x264 encoder."), (""));
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+/* gst_x264_enc_close_encoder
+ * @encoder:  Encoder which should close.
+ *
+ * Close x264 encoder.
+ */
+static void
+gst_x264_enc_close_encoder (GstX264Enc * encoder)
+{
+  if (encoder->x264enc != NULL) {
+    x264_encoder_close (encoder->x264enc);
+    encoder->x264enc = NULL;
+  }
+}
+
+static void
+gst_x264_enc_dispose (GObject * object)
+{
+  GstX264Enc *encoder = GST_X264_ENC (object);
+
+  g_free (encoder->stats_file);
+  encoder->stats_file = NULL;
+  g_free (encoder->buffer);
+  encoder->buffer = NULL;
+
+  gst_x264_enc_timestamp_queue_free (encoder);
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+
+  gst_x264_enc_close_encoder (encoder);
+}
+
+static gboolean
+gst_x264_enc_sink_event (GstPad * pad, GstEvent * event)
+{
+  gboolean ret;
+  GstX264Enc *encoder;
+  GstFlowReturn flow_ret;
+  int i_nal;
+
+  encoder = GST_X264_ENC (gst_pad_get_parent (pad));
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_EOS:
+      /* send the rest NAL units */
+      do {
+        flow_ret = gst_x264_enc_encode_frame (encoder, NULL, &i_nal);
+      } while (flow_ret == GST_FLOW_OK && i_nal > 0);
+
+      /* send EOS */
+      if (flow_ret == GST_FLOW_OK) {
+        ret = gst_pad_push_event (encoder->srcpad, event);
+      } else {
+        ret = FALSE;
+      }
+      break;
+    default:
+      ret = gst_pad_push_event (encoder->srcpad, event);
+      break;
+  }
+  gst_object_unref (encoder);
+  return ret;
+}
+
+/* chain function
+ * this function does the actual processing
+ */
+
+static GstFlowReturn
+gst_x264_enc_chain (GstPad * pad, GstBuffer * buf)
+{
+  GstX264Enc *encoder = GST_X264_ENC (GST_OBJECT_PARENT (pad));
+  GstFlowReturn ret;
+  x264_picture_t pic_in;
+  int i_nal;
+
+  if (G_UNLIKELY (encoder->x264enc == NULL))
+    goto not_inited;
+
+  /* create x264_picture_t from the buffer */
+  /* mostly taken from mplayer (file ve_x264.c) */
+  /* FIXME: this looks wrong for odd widths/heights (tpm) */
+  if (G_UNLIKELY (GST_BUFFER_SIZE (buf) < encoder->luma_plane_size * 6 / 4))
+    goto wrong_buffer_size;
+
+  /* ignore duplicated packets */
+  if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buf))) {
+    if (GST_CLOCK_TIME_IS_VALID (encoder->last_timestamp)) {
+      GstClockTimeDiff diff =
+          GST_BUFFER_TIMESTAMP (buf) - encoder->last_timestamp;
+      if (diff <= 0) {
+        GST_ELEMENT_WARNING (encoder, STREAM, ENCODE,
+            ("Duplicated packet in input, dropping"),
+            ("Time difference was -%" GST_TIME_FORMAT, GST_TIME_ARGS (-diff)));
+        gst_buffer_unref (buf);
+        return GST_FLOW_OK;
+      }
+    }
+    encoder->last_timestamp = GST_BUFFER_TIMESTAMP (buf);
+  }
+
+  /* remember the timestamp and duration */
+  gst_x264_enc_timestamp_queue_put (encoder, GST_BUFFER_TIMESTAMP (buf),
+      GST_BUFFER_DURATION (buf));
+
+  memset (&pic_in, 0, sizeof (x264_picture_t));
+
+  pic_in.img.i_csp = X264_CSP_I420;
+  pic_in.img.i_plane = 3;
+
+  /* FIXME: again, this looks wrong for odd widths/heights (tpm) */
+  pic_in.img.plane[0] = (guint8 *) (GST_BUFFER_DATA (buf));
+  pic_in.img.i_stride[0] = encoder->stride;
+
+  pic_in.img.plane[1] = pic_in.img.plane[0]
+      + encoder->luma_plane_size;
+  pic_in.img.i_stride[1] = encoder->stride / 2;
+
+  pic_in.img.plane[2] = pic_in.img.plane[1]
+      + encoder->luma_plane_size / 4;
+  pic_in.img.i_stride[2] = encoder->stride / 2;
+
+  pic_in.img.plane[3] = NULL;
+  pic_in.img.i_stride[3] = 0;
+
+  pic_in.i_type = X264_TYPE_AUTO;
+  pic_in.i_pts = GST_BUFFER_TIMESTAMP (buf);
+
+  ret = gst_x264_enc_encode_frame (encoder, &pic_in, &i_nal);
+  gst_buffer_unref (buf);
+  return ret;
+
+/* ERRORS */
+not_inited:
+  {
+    GST_ELEMENT_ERROR (encoder, CORE, NEGOTIATION, (NULL),
+        ("Got buffer before pads were fully negotiated"));
+    gst_buffer_unref (buf);
+    return GST_FLOW_ERROR;
+  }
+wrong_buffer_size:
+  {
+    GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
+        ("Encode x264 frame failed."),
+        ("Wrong buffer size %d (should be %d)",
+            GST_BUFFER_SIZE (buf), encoder->luma_plane_size * 6 / 4));
+    gst_buffer_unref (buf);
+    return GST_FLOW_ERROR;
+  }
+}
+
+static GstFlowReturn
+gst_x264_enc_encode_frame (GstX264Enc * encoder, x264_picture_t * pic_in,
+    int *i_nal)
+{
+  GstBuffer *out_buf = NULL;
+  x264_picture_t pic_out;
+  x264_nal_t *nal;
+  int i_size;
+  int nal_size;
+  int encoder_return;
+  gint i;
+  GstFlowReturn ret;
+  GstClockTime timestamp;
+  GstClockTime duration;
+
+  encoder_return = x264_encoder_encode (encoder->x264enc,
+      &nal, i_nal, pic_in, &pic_out);
+
+  if (encoder_return < 0) {
+    GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
+        ("Encode x264 frame failed."),
+        ("x264_encoder_encode return code=%d", encoder_return));
+    return GST_FLOW_ERROR;
+  }
+
+  if (!*i_nal) {
+    return GST_FLOW_OK;
+  }
+
+  i_size = 0;
+  for (i = 0; i < *i_nal; i++) {
+    int i_data = encoder->buffer_size - i_size - 4;
+
+    if (i_data < encoder->buffer_size / 2) {
+      encoder->buffer_size *= 2;
+      encoder->buffer = g_realloc (encoder->buffer, encoder->buffer_size);
+      i_data = encoder->buffer_size - i_size;
+    }
+
+    nal_size =
+        x264_nal_encode (encoder->buffer + i_size + 4, &i_data, 0, &nal[i]);
+    if (encoder->byte_stream) {
+      encoder->buffer[i_size + 0] = 0;
+      encoder->buffer[i_size + 1] = 0;
+      encoder->buffer[i_size + 2] = 0;
+      encoder->buffer[i_size + 3] = 1;
+    } else {
+      encoder->buffer[i_size + 0] = (nal_size >> 24) & 0xff;
+      encoder->buffer[i_size + 1] = (nal_size >> 16) & 0xff;
+      encoder->buffer[i_size + 2] = (nal_size >> 8) & 0xff;
+      encoder->buffer[i_size + 3] = nal_size & 0xff;
+    }
+
+    i_size += nal_size + 4;
+  }
+
+  ret = gst_pad_alloc_buffer (encoder->srcpad, GST_BUFFER_OFFSET_NONE,
+      i_size, GST_PAD_CAPS (encoder->srcpad), &out_buf);
+  if (ret != GST_FLOW_OK)
+    return ret;
+
+  memcpy (GST_BUFFER_DATA (out_buf), encoder->buffer, i_size);
+  GST_BUFFER_SIZE (out_buf) = i_size;
+
+  gst_x264_enc_timestamp_queue_get (encoder, &timestamp, &duration);
+
+  /* PTS */
+  GST_BUFFER_TIMESTAMP (out_buf) = pic_out.i_pts;
+  if (encoder->bframes) {
+    /* When using B-frames, the frames will be reordered.
+       Make PTS start one frame after DTS. */
+    GST_BUFFER_TIMESTAMP (out_buf)
+        += GST_SECOND * encoder->framerate_den / encoder->framerate_num;
+  }
+
+  GST_BUFFER_DURATION (out_buf) = duration;
+
+  if (pic_out.i_type == X264_TYPE_IDR) {
+    GST_BUFFER_FLAG_UNSET (out_buf, GST_BUFFER_FLAG_DELTA_UNIT);
+  } else {
+    GST_BUFFER_FLAG_SET (out_buf, GST_BUFFER_FLAG_DELTA_UNIT);
+  }
+
+  return gst_pad_push (encoder->srcpad, out_buf);
+}
+
+static GstStateChangeReturn
+gst_x264_enc_change_state (GstElement * element, GstStateChange transition)
+{
+  GstX264Enc *encoder = GST_X264_ENC (element);
+  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+
+  ret = parent_class->change_state (element, transition);
+  if (ret == GST_STATE_CHANGE_FAILURE)
+    goto out;
+
+  switch (transition) {
+    case GST_STATE_CHANGE_READY_TO_NULL:
+      gst_x264_enc_close_encoder (encoder);
+      break;
+    default:
+      break;
+  }
+
+out:
+  return ret;
+}
+
+static void
+gst_x264_enc_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstX264Enc *encoder;
+
+  encoder = GST_X264_ENC (object);
+
+  /* FIXME: should probably do locking or check state */
+  switch (prop_id) {
+    case ARG_THREADS:
+      encoder->threads = g_value_get_uint (value);
+      break;
+    case ARG_PASS:
+      encoder->pass = g_value_get_uint (value);
+      break;
+    case ARG_STATS_FILE:
+      if (encoder->stats_file)
+        g_free (encoder->stats_file);
+      encoder->stats_file = g_value_dup_string (value);
+      break;
+    case ARG_BYTE_STREAM:
+      encoder->byte_stream = g_value_get_boolean (value);
+      break;
+    case ARG_BITRATE:
+      encoder->bitrate = g_value_get_uint (value);
+      break;
+    case ARG_VBV_BUF_CAPACITY:
+      encoder->vbv_buf_capacity = g_value_get_uint (value);
+      break;
+    case ARG_ME:
+      encoder->me = g_value_get_enum (value);
+      break;
+    case ARG_SUBME:
+      encoder->subme = g_value_get_uint (value);
+      break;
+    case ARG_ANALYSE:
+      encoder->analyse = g_value_get_flags (value);
+      break;
+    case ARG_DCT8x8:
+      encoder->dct8x8 = g_value_get_boolean (value);
+      break;
+    case ARG_REF:
+      encoder->ref = g_value_get_uint (value);
+      break;
+    case ARG_BFRAMES:
+      encoder->bframes = g_value_get_uint (value);
+      gst_x264_enc_timestamp_queue_free (encoder);
+      gst_x264_enc_timestamp_queue_init (encoder);
+      break;
+    case ARG_B_PYRAMID:
+      encoder->b_pyramid = g_value_get_boolean (value);
+      break;
+    case ARG_WEIGHTB:
+      encoder->weightb = g_value_get_boolean (value);
+      break;
+    case ARG_SPS_ID:
+      encoder->sps_id = g_value_get_uint (value);
+      break;
+    case ARG_TRELLIS:
+      encoder->trellis = g_value_get_boolean (value);
+      break;
+    case ARG_KEYINT_MAX:
+      encoder->keyint_max = g_value_get_uint (value);
+      break;
+    case ARG_CABAC:
+      encoder->cabac = g_value_get_boolean (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_x264_enc_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstX264Enc *encoder;
+
+  encoder = GST_X264_ENC (object);
+
+  /* FIXME: should probably do locking or check state */
+  switch (prop_id) {
+    case ARG_THREADS:
+      g_value_set_uint (value, encoder->threads);
+      break;
+    case ARG_PASS:
+      g_value_set_uint (value, encoder->pass);
+      break;
+    case ARG_STATS_FILE:
+      g_value_set_string (value, encoder->stats_file);
+      break;
+    case ARG_BYTE_STREAM:
+      g_value_set_boolean (value, encoder->byte_stream);
+      break;
+    case ARG_BITRATE:
+      g_value_set_uint (value, encoder->bitrate);
+      break;
+    case ARG_VBV_BUF_CAPACITY:
+      g_value_set_uint (value, encoder->vbv_buf_capacity);
+      break;
+    case ARG_ME:
+      g_value_set_enum (value, encoder->me);
+      break;
+    case ARG_SUBME:
+      g_value_set_uint (value, encoder->subme);
+      break;
+    case ARG_ANALYSE:
+      g_value_set_flags (value, encoder->analyse);
+      break;
+    case ARG_DCT8x8:
+      g_value_set_boolean (value, encoder->dct8x8);
+      break;
+    case ARG_REF:
+      g_value_set_uint (value, encoder->ref);
+      break;
+    case ARG_BFRAMES:
+      g_value_set_uint (value, encoder->bframes);
+      break;
+    case ARG_B_PYRAMID:
+      g_value_set_boolean (value, encoder->b_pyramid);
+      break;
+    case ARG_WEIGHTB:
+      g_value_set_boolean (value, encoder->weightb);
+      break;
+    case ARG_SPS_ID:
+      g_value_set_uint (value, encoder->sps_id);
+      break;
+    case ARG_TRELLIS:
+      g_value_set_boolean (value, encoder->trellis);
+      break;
+    case ARG_KEYINT_MAX:
+      g_value_set_uint (value, encoder->keyint_max);
+      break;
+    case ARG_CABAC:
+      g_value_set_boolean (value, encoder->cabac);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  return gst_element_register (plugin, "x264enc",
+      GST_RANK_NONE, GST_TYPE_X264_ENC);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "x264",
+    "libx264-based H264 plugins",
+    plugin_init, VERSION, "GPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
diff --git a/ext/x264/gstx264enc.h b/ext/x264/gstx264enc.h
new file mode 100644
index 00000000..412cfa36
--- /dev/null
+++ b/ext/x264/gstx264enc.h
@@ -0,0 +1,97 @@
+/* GStreamer H264 encoder plugin
+ * Copyright (C) 2005 Michal Benes <michal.benes@itonis.tv>
+ * Copyright (C) 2005 Josef Zlomek <josef.zlomek@itonis.tv>
+ *
+ * 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.
+ */
+
+#ifndef __GST_X264_ENC_H__
+#define __GST_X264_ENC_H__
+
+#include <gst/gst.h>
+#include <_stdint.h>
+#include <x264.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_X264_ENC \
+  (gst_x264_enc_get_type())
+#define GST_X264_ENC(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_X264_ENC,GstX264Enc))
+#define GST_X264_ENC_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_X264_ENC,GstX264EncClass))
+#define GST_IS_X264_ENC(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_X264_ENC))
+#define GST_IS_X264_ENC_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_X264_ENC))
+
+typedef struct _GstX264Enc GstX264Enc;
+typedef struct _GstX264EncClass GstX264EncClass;
+ 
+struct _GstX264Enc
+{
+  GstElement element;
+
+  /*< private >*/
+  GstPad *sinkpad;
+  GstPad *srcpad;
+
+  x264_t *x264enc;
+  x264_param_t x264param;
+
+  guint threads;
+  guint pass;
+  gchar *stats_file;
+  gboolean byte_stream;
+  guint bitrate;
+  gint me;
+  guint subme;
+  guint analyse;
+  gboolean dct8x8;
+  guint ref;
+  guint bframes;
+  gboolean b_pyramid;
+  gboolean weightb;
+  guint sps_id;
+  gboolean trellis;
+  guint vbv_buf_capacity;
+  guint keyint_max;
+  gboolean cabac;
+
+  gint width, height;
+  guint stride, luma_plane_size;
+  gint framerate_num, framerate_den;
+  gint par_num, par_den;
+
+  GstClockTime last_timestamp;
+  GstClockTime *timestamp_queue;
+  GstClockTime *timestamp_queue_dur;
+  guint timestamp_queue_size;
+  guint timestamp_queue_head;
+  guint timestamp_queue_tail;
+
+  guint8 *buffer;
+  gulong buffer_size;
+};
+
+struct _GstX264EncClass
+{
+  GstElementClass parent_class;
+};
+
+G_END_DECLS
+
+#endif /* __GST_X264_ENC_H__ */