dvdspu element donated by Fluendo. It implements a DVD Sub-Picture

Original commit message from CVS:
* configure.ac:
* gst/dvdspu/.cvsignore:
* gst/dvdspu/Notes.txt:
* gst/dvdspu/gstdvdspu-render.c: (dvdspu_recalc_palette),
(dvdspu_update_palettes), (dvdspu_clear_comp_buffers),
(dvdspu_get_nibble), (dvdspu_get_rle_code), (dvdspu_draw_rle_run),
(rle_end_x), (dvdspu_render_line), (dvdspu_update_chgcol),
(dvdspu_render_line_with_chgcol), (dvdspu_blend_comp_buffers),
(gstdvdspu_render_spu):
* gst/dvdspu/gstdvdspu.c: (dvdspu_base_init), (dvdspu_class_init),
(dvdspu_init), (dvdspu_clear), (dvdspu_dispose), (dvdspu_finalize),
(dvdspu_flush_spu_info), (dvdspu_buffer_alloc), (dvdspu_src_event),
(dvdspu_video_set_caps), (dvdspu_video_proxy_getcaps),
(dvdspu_video_event), (dvdspu_video_chain),
(dvspu_handle_vid_buffer), (dvdspu_redraw_still),
(gstdvdspu_parse_chg_colcon), (dvdspu_exec_cmd_blk),
(dvdspu_finish_spu_buf), (dvdspu_setup_cmd_blk),
(dvdspu_handle_new_spu_buf), (dvdspu_handle_dvd_event),
(dvdspu_dump_dcsq), (dvdspu_advance_spu),
(dvdspu_check_still_updates), (dvdspu_subpic_chain),
(dvdspu_subpic_event), (dvdspu_change_state),
(gstdvdspu_plugin_init):
* gst/dvdspu/gstdvdspu.h:
dvdspu element donated by Fluendo. It implements a DVD Sub-Picture
Unit, decoding and overlaying DVD subtitles and menu graphics.
* gst/mpeg2sub/.cvsignore:
* gst/mpeg2sub/Makefile.am:
* gst/mpeg2sub/Notes.txt:
* gst/mpeg2sub/gstmpeg2subt.c:
* gst/mpeg2sub/gstmpeg2subt.h:
* gst/mpeg2sub/mpeg2subt.vcproj:
Delete old and broken mpeg2subt element that was never ported from 0.8

11 files changed, 2162 insertions, 1323 deletions

diff --git a/ChangeLog b/ChangeLog
index a9cb8991..80fea138 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,40 @@
+2007-08-27  Jan Schmidt  <thaytan@mad.scientist.com>
+
+	* configure.ac:
+	* gst/dvdspu/.cvsignore:
+	* gst/dvdspu/Notes.txt:
+	* gst/dvdspu/gstdvdspu-render.c: (dvdspu_recalc_palette),
+	(dvdspu_update_palettes), (dvdspu_clear_comp_buffers),
+	(dvdspu_get_nibble), (dvdspu_get_rle_code), (dvdspu_draw_rle_run),
+	(rle_end_x), (dvdspu_render_line), (dvdspu_update_chgcol),
+	(dvdspu_render_line_with_chgcol), (dvdspu_blend_comp_buffers),
+	(gstdvdspu_render_spu):
+	* gst/dvdspu/gstdvdspu.c: (dvdspu_base_init), (dvdspu_class_init),
+	(dvdspu_init), (dvdspu_clear), (dvdspu_dispose), (dvdspu_finalize),
+	(dvdspu_flush_spu_info), (dvdspu_buffer_alloc), (dvdspu_src_event),
+	(dvdspu_video_set_caps), (dvdspu_video_proxy_getcaps),
+	(dvdspu_video_event), (dvdspu_video_chain),
+	(dvspu_handle_vid_buffer), (dvdspu_redraw_still),
+	(gstdvdspu_parse_chg_colcon), (dvdspu_exec_cmd_blk),
+	(dvdspu_finish_spu_buf), (dvdspu_setup_cmd_blk),
+	(dvdspu_handle_new_spu_buf), (dvdspu_handle_dvd_event),
+	(dvdspu_dump_dcsq), (dvdspu_advance_spu),
+	(dvdspu_check_still_updates), (dvdspu_subpic_chain),
+	(dvdspu_subpic_event), (dvdspu_change_state),
+	(gstdvdspu_plugin_init):
+	* gst/dvdspu/gstdvdspu.h:
+
+	dvdspu element donated by Fluendo. It implements a DVD Sub-Picture 
+	Unit, decoding and overlaying DVD subtitles and menu graphics.
+
+	* gst/mpeg2sub/.cvsignore:
+	* gst/mpeg2sub/Makefile.am:
+	* gst/mpeg2sub/Notes.txt:
+	* gst/mpeg2sub/gstmpeg2subt.c:
+	* gst/mpeg2sub/gstmpeg2subt.h:
+	* gst/mpeg2sub/mpeg2subt.vcproj:
+	Delete old and broken mpeg2subt element that was never ported from 0.8
+
 2007-08-24  Julien MOUTTE  <julien@moutte.net>
 
 	* gst/flv/gstflvdemux.c: (gst_flv_demux_flush),
diff --git a/configure.ac b/configure.ac
index 1c8030ff..e9e5cfdd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -83,6 +83,7 @@ GST_PLUGINS_ALL="\
   bayer \
   cdxaparse \
   deinterlace \
+  dvdspu \
   equalizer \
   festival \
   filter \
@@ -989,6 +990,7 @@ gst/app/Makefile
 gst/bayer/Makefile
 gst/cdxaparse/Makefile
 gst/deinterlace/Makefile
+gst/dvdspu/Makefile
 gst/equalizer/Makefile
 gst/festival/Makefile
 gst/filter/Makefile
diff --git a/gst/mpeg2sub/.gitignore b/gst/dvdspu/.gitignore
index 08f5ed37..08f5ed37 100644
--- a/gst/mpeg2sub/.gitignore
+++ b/gst/dvdspu/.gitignore
diff --git a/gst/mpeg2sub/Notes.txt b/gst/dvdspu/Notes.txt
index a0e56e3c..a0e56e3c 100644
--- a/gst/mpeg2sub/Notes.txt
+++ b/gst/dvdspu/Notes.txt
diff --git a/gst/dvdspu/gstdvdspu-render.c b/gst/dvdspu/gstdvdspu-render.c
new file mode 100644
index 00000000..1825712d
--- /dev/null
+++ b/gst/dvdspu/gstdvdspu-render.c
@@ -0,0 +1,521 @@
+/* GStreamer DVD Sub-Picture Unit
+ * Copyright (C) 2007 Fluendo S.A. <info@fluendo.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.
+ */
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <string.h>
+
+#include <gst/gst.h>
+
+#include "gstdvdspu.h"
+
+GST_DEBUG_CATEGORY_EXTERN (dvdspu_debug);
+#define GST_CAT_DEFAULT dvdspu_debug
+
+static void
+dvdspu_recalc_palette (GstDVDSpu * dvdspu,
+    SpuColour * dest, guint8 * idx, guint8 * alpha)
+{
+  SpuState *state = &dvdspu->spu_state;
+  gint i;
+
+  for (i = 0; i < 4; i++, dest++) {
+    guint32 col = state->current_clut[idx[i]];
+
+    dest->Y = (guint16) ((col >> 16) & 0xff) * alpha[i];
+    /* U/V are stored as V/U in the clut words, so switch them */
+    dest->U = (guint16) (col & 0xff) * alpha[i];
+    dest->V = (guint16) ((col >> 8) & 0xff) * alpha[i];
+    dest->A = alpha[i];
+  }
+}
+
+/* Recalculate the main, HL & ChgCol palettes */
+static void
+dvdspu_update_palettes (GstDVDSpu * dvdspu, SpuState * state)
+{
+  gint16 l, c;
+  guint8 index[4];              /* Indices for the palette */
+  guint8 alpha[4];              /* Alpha values the palette */
+
+  if (state->main_pal_dirty) {
+    dvdspu_recalc_palette (dvdspu, state->main_pal, state->main_idx,
+        state->main_alpha);
+
+    /* Need to refresh the hl_ctrl info copies of the main palette too */
+    memcpy (state->hl_ctrl_i.pix_ctrl_i[0].pal_cache, state->main_pal,
+        4 * sizeof (SpuColour));
+    memcpy (state->hl_ctrl_i.pix_ctrl_i[2].pal_cache, state->main_pal,
+        4 * sizeof (SpuColour));
+
+    state->main_pal_dirty = FALSE;
+  }
+
+  if (state->hl_pal_dirty) {
+    dvdspu_recalc_palette (dvdspu, state->hl_ctrl_i.pix_ctrl_i[1].pal_cache,
+        state->hl_idx, state->hl_alpha);
+    state->hl_pal_dirty = FALSE;
+  }
+
+  /* Update the offset positions for the highlight region */
+  if (state->hl_rect.top != -1) {
+    state->hl_ctrl_i.top = state->hl_rect.top;
+    state->hl_ctrl_i.bottom = state->hl_rect.bottom;
+    state->hl_ctrl_i.n_changes = 3;
+    state->hl_ctrl_i.pix_ctrl_i[0].left = 0;
+    state->hl_ctrl_i.pix_ctrl_i[1].left = state->hl_rect.left;
+    state->hl_ctrl_i.pix_ctrl_i[2].left = state->hl_rect.right + 1;
+  }
+
+  if (state->line_ctrl_i_pal_dirty) {
+    GST_LOG_OBJECT (dvdspu, "Updating chg-col-con palettes");
+    for (l = 0; l < state->n_line_ctrl_i; l++) {
+      SpuLineCtrlI *cur_line_ctrl = state->line_ctrl_i + l;
+
+      for (c = 0; c < cur_line_ctrl->n_changes; c++) {
+        SpuPixCtrlI *cur = cur_line_ctrl->pix_ctrl_i + c;
+
+        index[3] = (cur->palette >> 28) & 0x0f;
+        index[2] = (cur->palette >> 24) & 0x0f;
+        index[1] = (cur->palette >> 20) & 0x0f;
+        index[0] = (cur->palette >> 16) & 0x0f;
+
+        alpha[3] = (cur->palette >> 12) & 0x0f;
+        alpha[2] = (cur->palette >> 8) & 0x0f;
+        alpha[1] = (cur->palette >> 4) & 0x0f;
+        alpha[0] = (cur->palette) & 0x0f;
+        dvdspu_recalc_palette (dvdspu, cur->pal_cache, index, alpha);
+      }
+    }
+    state->line_ctrl_i_pal_dirty = FALSE;
+  }
+}
+
+static void
+dvdspu_clear_comp_buffers (SpuState * state)
+{
+  /* The area to clear is the line inside the disp_rect, each entry 2 bytes,
+   * of the sub-sampled UV planes. */
+  gint16 left = state->disp_rect.left / 2;
+  gint16 right = state->disp_rect.right / 2;
+  gint16 uv_width = 2 * (right - left + 1);
+
+  memset (state->comp_bufs[0] + left, 0, uv_width);
+  memset (state->comp_bufs[1] + left, 0, uv_width);
+  memset (state->comp_bufs[2] + left, 0, uv_width);
+
+  state->comp_last_x[0] = -1;
+  state->comp_last_x[1] = -1;
+}
+
+static inline guint8
+dvdspu_get_nibble (SpuState * state, guint16 * rle_offset)
+{
+  guint8 ret;
+
+  if (G_UNLIKELY (*rle_offset >= state->max_offset))
+    return 0;                   /* Overran the buffer */
+
+  ret = GST_BUFFER_DATA (state->pix_buf)[(*rle_offset) / 2];
+
+  /* If the offset is even, we shift the answer down 4 bits, otherwise not */
+  if (*rle_offset & 0x01)
+    ret &= 0x0f;
+  else
+    ret = ret >> 4;
+
+  (*rle_offset)++;
+  return ret;
+}
+
+static guint16
+dvdspu_get_rle_code (SpuState * state, guint16 * rle_offset)
+{
+  guint16 code;
+
+  code = dvdspu_get_nibble (state, rle_offset);
+  if (code < 0x4) {             /* 4 .. f */
+    code = (code << 4) | dvdspu_get_nibble (state, rle_offset);
+    if (code < 0x10) {          /* 1x .. 3x */
+      code = (code << 4) | dvdspu_get_nibble (state, rle_offset);
+      if (code < 0x40) {        /* 04x .. 0fx */
+        code = (code << 4) | dvdspu_get_nibble (state, rle_offset);
+      }
+    }
+  }
+  return code;
+}
+
+static inline void
+dvdspu_draw_rle_run (SpuState * state, gint16 x, gint16 end, SpuColour * colour)
+{
+#if 0
+  GST_LOG ("Y: %d x: %d end %d col %d %d %d %d",
+      state->cur_Y, x, end, colour->Y, colour->U, colour->V, colour->A);
+#endif
+
+  if (colour->A != 0) {
+    guint8 inv_A = 0xf - colour->A;
+
+    /* FIXME: This could be more efficient */
+    while (x < end) {
+      state->out_Y[x] = (inv_A * state->out_Y[x] + colour->Y) / 0xf;
+      state->out_U[x / 2] += colour->U;
+      state->out_V[x / 2] += colour->V;
+      state->out_A[x / 2] += colour->A;
+      x++;
+    }
+    /* Update the compositing buffer so we know how much to blend later */
+    *(state->comp_last_x_ptr) = end;
+  }
+}
+
+static inline gint16
+rle_end_x (guint16 rle_code, gint16 x, gint16 end)
+{
+  /* run length = rle_code >> 2 */
+  if (G_UNLIKELY (((rle_code >> 2) == 0)))
+    return end;
+  else
+    return MIN (end, x + (rle_code >> 2));
+}
+
+static void dvdspu_render_line_with_chgcol (SpuState * state,
+    guint8 * planes[3], guint16 * rle_offset);
+static gboolean dvdspu_update_chgcol (SpuState * state);
+
+static void
+dvdspu_render_line (SpuState * state, guint8 * planes[3], guint16 * rle_offset)
+{
+  gint16 x, next_x, end, rle_code;
+  SpuColour *colour;
+
+  /* Check for special case of chg_col info to use (either highlight or 
+   * ChgCol command */
+  if (state->cur_chg_col != NULL) {
+    if (dvdspu_update_chgcol (state)) {
+      /* Check the top & bottom, because we might not be within the region yet */
+      if (state->cur_Y >= state->cur_chg_col->top &&
+          state->cur_Y <= state->cur_chg_col->bottom) {
+        dvdspu_render_line_with_chgcol (state, planes, rle_offset);
+        return;
+      }
+    }
+  }
+
+  /* No special case. Render as normal */
+
+  /* Set up our output pointers */
+  state->out_Y = planes[0];
+  state->out_U = state->comp_bufs[0];
+  state->out_V = state->comp_bufs[1];
+  state->out_A = state->comp_bufs[2];
+  /* We always need to start our RLE decoding byte_aligned */
+  *rle_offset = GST_ROUND_UP_2 (*rle_offset);
+
+  x = state->disp_rect.left;
+  end = state->disp_rect.right + 1;
+  while (x < end) {
+    rle_code = dvdspu_get_rle_code (state, rle_offset);
+    colour = &state->main_pal[rle_code & 3];
+    next_x = rle_end_x (rle_code, x, end);
+    /* Now draw the run between [x,next_x) */
+    dvdspu_draw_rle_run (state, x, next_x, colour);
+    x = next_x;
+  }
+}
+
+static gboolean
+dvdspu_update_chgcol (SpuState * state)
+{
+  if (state->cur_chg_col == NULL)
+    return FALSE;
+
+  if (state->cur_Y <= state->cur_chg_col->bottom)
+    return TRUE;
+
+  while (state->cur_chg_col < state->cur_chg_col_end) {
+    if (state->cur_Y >= state->cur_chg_col->top &&
+        state->cur_Y <= state->cur_chg_col->bottom) {
+#if 0
+      g_print ("Stopped @ entry %d with top %d bottom %d, cur_y %d",
+          (gint16) (state->cur_chg_col - state->line_ctrl_i),
+          state->cur_chg_col->top, state->cur_chg_col->bottom, y);
+#endif
+      return TRUE;
+    }
+    state->cur_chg_col++;
+  }
+
+  /* Finished all our cur_chg_col entries. Use the main palette from here on */
+  state->cur_chg_col = NULL;
+  return FALSE;
+}
+
+static void
+dvdspu_render_line_with_chgcol (SpuState * state, guint8 * planes[3],
+    guint16 * rle_offset)
+{
+  SpuLineCtrlI *chg_col = state->cur_chg_col;
+
+  gint16 x, next_x, disp_end, rle_code, run_end;
+  SpuColour *colour;
+  SpuPixCtrlI *cur_pix_ctrl;
+  SpuPixCtrlI *next_pix_ctrl;
+  SpuPixCtrlI *end_pix_ctrl;
+  SpuPixCtrlI dummy_pix_ctrl;
+  gint16 cur_reg_end;
+  gint i;
+
+  state->out_Y = planes[0];
+  state->out_U = state->comp_bufs[0];
+  state->out_V = state->comp_bufs[1];
+  state->out_A = state->comp_bufs[2];
+
+  /* We always need to start our RLE decoding byte_aligned */
+  *rle_offset = GST_ROUND_UP_2 (*rle_offset);
+
+  /* Our run will cover the display rect */
+  x = state->disp_rect.left;
+  disp_end = state->disp_rect.right + 1;
+
+  /* Work out the first pixel control info, which may point to the dummy entry if
+   * the global palette/alpha need using initally */
+  cur_pix_ctrl = chg_col->pix_ctrl_i;
+  end_pix_ctrl = chg_col->pix_ctrl_i + chg_col->n_changes;
+
+  if (cur_pix_ctrl->left != 0) {
+    next_pix_ctrl = cur_pix_ctrl;
+    cur_pix_ctrl = &dummy_pix_ctrl;
+    for (i = 0; i < 4; i++)     /* Copy the main palette to our dummy entry */
+      dummy_pix_ctrl.pal_cache[i] = state->main_pal[i];
+  } else {
+    next_pix_ctrl = cur_pix_ctrl + 1;
+  }
+  if (next_pix_ctrl < end_pix_ctrl)
+    cur_reg_end = next_pix_ctrl->left;
+  else
+    cur_reg_end = disp_end;
+
+  /* Render stuff */
+  while (x < disp_end) {
+    rle_code = dvdspu_get_rle_code (state, rle_offset);
+    next_x = rle_end_x (rle_code, x, disp_end);
+
+    /* Now draw the run between [x,next_x), crossing palette regions as needed */
+    while (x < next_x) {
+      run_end = MIN (next_x, cur_reg_end);
+
+      if (G_LIKELY (x < run_end)) {
+        colour = &cur_pix_ctrl->pal_cache[rle_code & 3];
+        dvdspu_draw_rle_run (state, x, run_end, colour);
+        x = run_end;
+      }
+
+      if (x >= cur_reg_end) {
+        /* Advance to next region */
+        cur_pix_ctrl = next_pix_ctrl;
+        next_pix_ctrl++;
+
+        if (next_pix_ctrl < end_pix_ctrl)
+          cur_reg_end = next_pix_ctrl->left;
+        else
+          cur_reg_end = disp_end;
+      }
+    }
+  }
+}
+
+static void
+dvdspu_blend_comp_buffers (SpuState * state, guint8 * planes[3])
+{
+  gint16 uv_end;
+  gint16 left, x;
+  guint8 *out_U;
+  guint8 *out_V;
+  guint16 *in_U;
+  guint16 *in_V;
+  guint16 *in_A;
+  gint16 comp_last_x = MAX (state->comp_last_x[0], state->comp_last_x[1]);
+
+  if (comp_last_x < state->disp_rect.left)
+    return;                     /* Didn't draw in the comp buffers, nothing to do... */
+
+#if 0
+  GST_LOG ("Blending comp buffers from disp_rect.left %d to x=%d",
+      state->disp_rect.left, comp_last_x);
+#endif
+
+  /* Set up the output pointers */
+  out_U = planes[1];            /* U plane */
+  out_V = planes[2];            /* V plane */
+
+  /* Input starts at the first pixel of the compositing buffer */
+  in_U = state->comp_bufs[0];   /* U comp buffer */
+  in_V = state->comp_bufs[1];   /* V comp buffer */
+  in_A = state->comp_bufs[2];   /* A comp buffer */
+
+  /* Calculate how many pixels to blend based on the maximum X value that was 
+   * drawn in the render_line function, divided by 2 (rounding up) to account 
+   * for UV sub-sampling */
+  uv_end = (comp_last_x + 1) / 2;
+  left = state->disp_rect.left / 2;
+
+  for (x = left; x < uv_end; x++) {
+    guint16 tmp;
+    guint16 inv_A = (4 * 0xf) - in_A[x];
+
+    /* Each entry in the compositing buffer is 4 summed pixels, so the
+     * inverse alpha is (4 * 0x0f) - in_A[x] */
+    tmp = in_U[x] + inv_A * out_U[x];
+    out_U[x] = (guint8) (tmp / (4 * 0xf));
+
+    tmp = in_V[x] + inv_A * out_V[x];
+    out_V[x] = (guint8) (tmp / (4 * 0xf));
+  }
+}
+
+void
+gstdvdspu_render_spu (GstDVDSpu * dvdspu, GstBuffer * buf)
+{
+  SpuState *state = &dvdspu->spu_state;
+  guint8 *planes[3];            /* YUV frame pointers */
+  gint y, last_y;
+
+  /* Set up our initial state */
+
+  /* Store the start of each plane */
+  planes[0] = GST_BUFFER_DATA (buf);
+  planes[1] = planes[0] + (state->Y_height * state->Y_stride);
+  planes[2] = planes[1] + (state->UV_height * state->UV_stride);
+
+  /* Sanity check */
+  g_return_if_fail (planes[2] + (state->UV_height * state->UV_stride) <=
+      GST_BUFFER_DATA (buf) + GST_BUFFER_SIZE (buf));
+
+  GST_DEBUG ("Rendering SPU. disp_rect %d,%d to %d,%d. hl_rect %d,%d to %d,%d",
+      state->disp_rect.left, state->disp_rect.top,
+      state->disp_rect.right, state->disp_rect.bottom,
+      state->hl_rect.left, state->hl_rect.top,
+      state->hl_rect.right, state->hl_rect.bottom);
+
+  /* We start rendering from the first line of the display rect */
+  y = state->disp_rect.top;
+
+  /* Update our plane references to the first line of the disp_rect */
+  planes[0] += state->Y_stride * y;
+  planes[1] += state->UV_stride * (y / 2);
+  planes[2] += state->UV_stride * (y / 2);
+
+  /* When reading RLE data, we track the offset in nibbles... */
+  state->cur_offsets[0] = state->pix_data[0] * 2;
+  state->cur_offsets[1] = state->pix_data[1] * 2;
+  state->max_offset = GST_BUFFER_SIZE (state->pix_buf) * 2;
+
+  /* Update all the palette caches */
+  dvdspu_update_palettes (dvdspu, state);
+
+  /* Set up HL or Change Color & Contrast rect tracking */
+  if (state->hl_rect.top != -1) {
+    state->cur_chg_col = &state->hl_ctrl_i;
+    state->cur_chg_col_end = state->cur_chg_col + 1;
+  } else if (state->n_line_ctrl_i > 0) {
+    state->cur_chg_col = state->line_ctrl_i;
+    state->cur_chg_col_end = state->cur_chg_col + state->n_line_ctrl_i;
+  } else
+    state->cur_chg_col = NULL;
+
+  /* start_y is always an even number and we render lines in pairs from there, 
+   * accumulating 2 lines of chroma then blending it. We might need to render a 
+   * single line at the end if the display rect ends on an even line too. */
+  last_y = (state->disp_rect.bottom - 1) & ~(0x01);
+  for (state->cur_Y = y; state->cur_Y <= last_y; state->cur_Y++) {
+    /* Reset the compositing buffer */
+    dvdspu_clear_comp_buffers (state);
+    /* Render even line */
+    state->comp_last_x_ptr = state->comp_last_x;
+    dvdspu_render_line (state, planes, &state->cur_offsets[0]);
+    /* Advance the luminance output pointer */
+    planes[0] += state->Y_stride;
+    state->cur_Y++;
+
+    /* Render odd line */
+    state->comp_last_x_ptr = state->comp_last_x + 1;
+    dvdspu_render_line (state, planes, &state->cur_offsets[1]);
+    /* Blend the accumulated UV compositing buffers onto the output */
+    dvdspu_blend_comp_buffers (state, planes);
+
+    /* Update all the output pointers */
+    planes[0] += state->Y_stride;
+    planes[1] += state->UV_stride;
+    planes[2] += state->UV_stride;
+  }
+  if (state->cur_Y == state->disp_rect.bottom) {
+    g_assert ((state->disp_rect.bottom & 0x01) == 0);
+
+    /* Render a remaining lone last even line. y already has the correct value 
+     * after the above loop exited. */
+    dvdspu_clear_comp_buffers (state);
+    state->comp_last_x_ptr = state->comp_last_x;
+    dvdspu_render_line (state, planes, &state->cur_offsets[0]);
+    dvdspu_blend_comp_buffers (state, planes);
+  }
+
+  /* for debugging purposes, draw a faint rectangle at the edges of the disp_rect */
+#if 0
+  do {
+    guint8 *cur;
+    gint16 pos;
+
+    cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->disp_rect.top;
+    for (pos = state->disp_rect.left + 1; pos < state->disp_rect.right; pos++)
+      cur[pos] = (cur[pos] / 2) + 0x8;
+    cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->disp_rect.bottom;
+    for (pos = state->disp_rect.left + 1; pos < state->disp_rect.right; pos++)
+      cur[pos] = (cur[pos] / 2) + 0x8;
+    cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->disp_rect.top;
+    for (pos = state->disp_rect.top; pos <= state->disp_rect.bottom; pos++) {
+      cur[state->disp_rect.left] = (cur[state->disp_rect.left] / 2) + 0x8;
+      cur[state->disp_rect.right] = (cur[state->disp_rect.right] / 2) + 0x8;
+      cur += state->Y_stride;
+    }
+  } while (0);
+#endif
+  /* For debugging purposes, draw a faint rectangle around the highlight rect */
+#if 0
+  if (state->hl_rect.top != -1) {
+    guint8 *cur;
+    gint16 pos;
+
+    cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->hl_rect.top;
+    for (pos = state->hl_rect.left + 1; pos < state->hl_rect.right; pos++)
+      cur[pos] = (cur[pos] / 2) + 0x8;
+    cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->hl_rect.bottom;
+    for (pos = state->hl_rect.left + 1; pos < state->hl_rect.right; pos++)
+      cur[pos] = (cur[pos] / 2) + 0x8;
+    cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->hl_rect.top;
+    for (pos = state->hl_rect.top; pos <= state->hl_rect.bottom; pos++) {
+      cur[state->hl_rect.left] = (cur[state->hl_rect.left] / 2) + 0x8;
+      cur[state->hl_rect.right] = (cur[state->hl_rect.right] / 2) + 0x8;
+      cur += state->Y_stride;
+    }
+  }
+#endif
+}
diff --git a/gst/dvdspu/gstdvdspu.c b/gst/dvdspu/gstdvdspu.c
new file mode 100644
index 00000000..85d80f5a
--- /dev/null
+++ b/gst/dvdspu/gstdvdspu.c
@@ -0,0 +1,1376 @@
+/* GStreamer DVD Sub-Picture Unit
+ * Copyright (C) 2007 Fluendo S.A. <info@fluendo.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.
+ */
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <string.h>
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+
+#include "gstdvdspu.h"
+
+GST_DEBUG_CATEGORY (dvdspu_debug);
+#define GST_CAT_DEFAULT dvdspu_debug
+
+/* Convert an STM offset in the SPU sequence to a GStreamer timestamp */
+#define STM_TO_GST(stm) ((GST_MSECOND * 1024 * (stm)) / 90)
+
+/* Filter signals and args */
+enum
+{
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+static GstStaticPadTemplate video_sink_factory =
+GST_STATIC_PAD_TEMPLATE ("video",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-raw-yuv, " "format = (fourcc) { I420 }, "
+        "width = (int) [ 16, 4096 ], " "height = (int) [ 16, 4096 ]")
+    /* FIXME: Can support YV12 one day too */
+    );
+
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-raw-yuv, " "format = (fourcc) { I420 }, "
+        "width = (int) [ 16, 4096 ], " "height = (int) [ 16, 4096 ]")
+    /* FIXME: Can support YV12 one day too */
+    );
+
+static GstStaticPadTemplate subpic_sink_factory =
+GST_STATIC_PAD_TEMPLATE ("subpicture",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-dvd-subpicture")
+    );
+
+GST_BOILERPLATE (GstDVDSpu, dvdspu, GstElement, GST_TYPE_ELEMENT);
+
+static void dvdspu_dispose (GstDVDSpu * dvdspu);
+static void dvdspu_finalize (GstDVDSpu * dvdspu);
+static GstStateChangeReturn dvdspu_change_state (GstElement * element,
+    GstStateChange transition);
+
+static gboolean dvdspu_src_event (GstPad * pad, GstEvent * event);
+
+static GstCaps *dvdspu_video_proxy_getcaps (GstPad * pad);
+static gboolean dvdspu_video_set_caps (GstPad * pad, GstCaps * caps);
+static GstFlowReturn dvdspu_video_chain (GstPad * pad, GstBuffer * buf);
+static gboolean dvdspu_video_event (GstPad * pad, GstEvent * event);
+static GstFlowReturn dvdspu_buffer_alloc (GstPad * sinkpad, guint64 offset,
+    guint size, GstCaps * caps, GstBuffer ** buf);
+static void dvdspu_redraw_still (GstDVDSpu * dvdspu);
+
+static void dvdspu_check_still_updates (GstDVDSpu * dvdspu);
+static GstFlowReturn dvdspu_subpic_chain (GstPad * pad, GstBuffer * buf);
+static gboolean dvdspu_subpic_event (GstPad * pad, GstEvent * event);
+
+static void dvdspu_clear (GstDVDSpu * dvdspu);
+static void dvdspu_flush_spu_info (GstDVDSpu * dvdspu);
+static void dvdspu_advance_spu (GstDVDSpu * dvdspu, GstClockTime new_ts);
+static GstFlowReturn
+dvspu_handle_vid_buffer (GstDVDSpu * dvdspu, GstBuffer * buf);
+
+static void
+dvdspu_base_init (gpointer gclass)
+{
+  static GstElementDetails element_details =
+      GST_ELEMENT_DETAILS ("Fluendo DVD Player Sub-picture Overlay",
+      "Mixer/Video/Overlay/DVD",
+      "Parses the DVD Sub-Picture command stream and renders the SPU overlay "
+      "onto the video as it passes through",
+      "Jan Schmidt <jan@fluendo.com>");
+  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
+
+  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 (&video_sink_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&subpic_sink_factory));
+  gst_element_class_set_details (element_class, &element_details);
+
+  element_class->change_state = dvdspu_change_state;
+}
+
+static void
+dvdspu_class_init (GstDVDSpuClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+
+  gobject_class->dispose = (GObjectFinalizeFunc) dvdspu_dispose;
+  gobject_class->finalize = (GObjectFinalizeFunc) dvdspu_finalize;
+}
+
+static void
+dvdspu_init (GstDVDSpu * dvdspu, GstDVDSpuClass * gclass)
+{
+  dvdspu->videosinkpad =
+      gst_pad_new_from_static_template (&video_sink_factory, "video");
+  gst_pad_set_setcaps_function (dvdspu->videosinkpad, dvdspu_video_set_caps);
+  gst_pad_set_getcaps_function (dvdspu->videosinkpad,
+      dvdspu_video_proxy_getcaps);
+  gst_pad_set_chain_function (dvdspu->videosinkpad, dvdspu_video_chain);
+  gst_pad_set_event_function (dvdspu->videosinkpad, dvdspu_video_event);
+  gst_pad_set_bufferalloc_function (dvdspu->videosinkpad, dvdspu_buffer_alloc);
+
+  dvdspu->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
+  gst_pad_set_event_function (dvdspu->srcpad, dvdspu_src_event);
+  gst_pad_set_getcaps_function (dvdspu->srcpad, dvdspu_video_proxy_getcaps);
+
+  dvdspu->subpic_sinkpad =
+      gst_pad_new_from_static_template (&subpic_sink_factory, "subpicture");
+  gst_pad_set_chain_function (dvdspu->subpic_sinkpad, dvdspu_subpic_chain);
+  gst_pad_set_event_function (dvdspu->subpic_sinkpad, dvdspu_subpic_event);
+  gst_pad_use_fixed_caps (dvdspu->subpic_sinkpad);
+
+  gst_element_add_pad (GST_ELEMENT (dvdspu), dvdspu->videosinkpad);
+  gst_element_add_pad (GST_ELEMENT (dvdspu), dvdspu->subpic_sinkpad);
+  gst_element_add_pad (GST_ELEMENT (dvdspu), dvdspu->srcpad);
+
+  dvdspu->spu_lock = g_mutex_new ();
+  dvdspu->pending_spus = g_queue_new ();
+
+  dvdspu_clear (dvdspu);
+}
+
+static void
+dvdspu_clear (GstDVDSpu * dvdspu)
+{
+  dvdspu_flush_spu_info (dvdspu);
+
+  gst_buffer_replace (&dvdspu->ref_frame, NULL);
+  gst_buffer_replace (&dvdspu->pending_frame, NULL);
+
+  dvdspu->spu_state.fps_n = 25;
+  dvdspu->spu_state.fps_d = 1;
+
+  gst_segment_init (&dvdspu->video_seg, GST_FORMAT_UNDEFINED);
+}
+
+static void
+dvdspu_dispose (GstDVDSpu * dvdspu)
+{
+  /* need to hold the SPU lock in case other stuff is still running... */
+  GSTDVDSPU_LOCK (dvdspu);
+  dvdspu_clear (dvdspu);
+  GSTDVDSPU_UNLOCK (dvdspu);
+}
+
+static void
+dvdspu_finalize (GstDVDSpu * dvdspu)
+{
+  gint i;
+
+  for (i = 0; i < 3; i++) {
+    if (dvdspu->spu_state.comp_bufs[i] != NULL) {
+      g_free (dvdspu->spu_state.comp_bufs[i]);
+      dvdspu->spu_state.comp_bufs[i] = NULL;
+    }
+  }
+  g_queue_free (dvdspu->pending_spus);
+  g_mutex_free (dvdspu->spu_lock);
+}
+
+/* With SPU lock held, clear the queue of SPU packets */
+static void
+dvdspu_flush_spu_info (GstDVDSpu * dvdspu)
+{
+  SpuPacket *packet;
+  SpuState *state = &dvdspu->spu_state;
+
+  GST_INFO_OBJECT (dvdspu, "Flushing SPU information");
+
+  gst_segment_init (&dvdspu->subp_seg, GST_FORMAT_UNDEFINED);
+
+  if (dvdspu->partial_spu) {
+    gst_buffer_unref (dvdspu->partial_spu);
+    dvdspu->partial_spu = NULL;
+  }
+
+  packet = (SpuPacket *) g_queue_pop_head (dvdspu->pending_spus);
+  while (packet != NULL) {
+    if (packet->buf)
+      gst_buffer_unref (packet->buf);
+    if (packet->event)
+      gst_event_unref (packet->event);
+    g_free (packet);
+    packet = (SpuPacket *) g_queue_pop_head (dvdspu->pending_spus);
+  }
+
+  if (state->buf) {
+    gst_buffer_unref (state->buf);
+    state->buf = NULL;
+  }
+  if (state->pix_buf) {
+    gst_buffer_unref (state->pix_buf);
+    state->pix_buf = NULL;
+  }
+
+  state->base_ts = state->next_ts = GST_CLOCK_TIME_NONE;
+  state->flags &= ~(SPU_STATE_FLAGS_MASK);
+  state->pix_data[0] = 0;
+  state->pix_data[1] = 0;
+
+  state->hl_rect.top = -1;
+  state->hl_rect.bottom = -1;
+
+  state->disp_rect.top = -1;
+  state->disp_rect.bottom = -1;
+
+  state->n_line_ctrl_i = 0;
+  if (state->line_ctrl_i != NULL) {
+    g_free (state->line_ctrl_i);
+    state->line_ctrl_i = NULL;
+  }
+}
+
+/* Proxy buffer allocations on the video sink pad downstream */
+static GstFlowReturn
+dvdspu_buffer_alloc (GstPad * sinkpad, guint64 offset, guint size,
+    GstCaps * caps, GstBuffer ** buf)
+{
+  GstDVDSpu *dvdspu = GSTDVDSPU (gst_pad_get_parent (sinkpad));
+  GstFlowReturn ret = GST_FLOW_OK;
+
+  ret = gst_pad_alloc_buffer (dvdspu->srcpad, offset, size, caps, buf);
+
+  gst_object_unref (dvdspu);
+
+  return ret;
+}
+
+static gboolean
+dvdspu_src_event (GstPad * pad, GstEvent * event)
+{
+  GstDVDSpu *dvdspu = GSTDVDSPU (gst_pad_get_parent (pad));
+  GstPad *peer;
+  gboolean res = TRUE;
+
+  peer = gst_pad_get_peer (dvdspu->videosinkpad);
+  if (peer) {
+    res = gst_pad_send_event (peer, event);
+    gst_object_unref (peer);
+  }
+
+  gst_object_unref (dvdspu);
+  return res;
+}
+
+static gboolean
+dvdspu_video_set_caps (GstPad * pad, GstCaps * caps)
+{
+  GstDVDSpu *dvdspu = GSTDVDSPU (gst_pad_get_parent (pad));
+  gboolean res = FALSE;
+  GstStructure *s;
+  gint w, h;
+  gint i;
+  gint fps_n, fps_d;
+  SpuState *state;
+
+  s = gst_caps_get_structure (caps, 0);
+
+  if (!gst_structure_get_int (s, "width", &w) ||
+      !gst_structure_get_int (s, "height", &h) ||
+      !gst_structure_get_fraction (s, "framerate", &fps_n, &fps_d)) {
+    goto done;
+  }
+
+  GSTDVDSPU_LOCK (dvdspu);
+
+  state = &dvdspu->spu_state;
+
+  state->fps_n = fps_n;
+  state->fps_d = fps_d;
+
+  state->vid_height = h;
+  state->Y_height = GST_ROUND_UP_2 (h);
+  state->UV_height = state->Y_height / 2;
+
+  if (state->vid_width != w) {
+    state->vid_width = w;
+    state->Y_stride = GST_ROUND_UP_4 (w);
+    state->UV_stride = GST_ROUND_UP_4 (state->Y_stride / 2);
+    for (i = 0; i < 3; i++) {
+      state->comp_bufs[i] = g_realloc (state->comp_bufs[i],
+          sizeof (guint16) * state->UV_stride);
+    }
+  }
+  GSTDVDSPU_UNLOCK (dvdspu);
+
+  res = TRUE;
+done:
+  gst_object_unref (dvdspu);
+  return res;
+}
+
+static GstCaps *
+dvdspu_video_proxy_getcaps (GstPad * pad)
+{
+  GstDVDSpu *dvdspu = GSTDVDSPU (gst_pad_get_parent (pad));
+  GstCaps *caps;
+  GstPad *otherpad;
+
+  /* Proxy the getcaps between videosink and the srcpad, ignoring the 
+   * subpicture sink pad */
+  otherpad = (pad == dvdspu->srcpad) ? dvdspu->videosinkpad : dvdspu->srcpad;
+
+  caps = gst_pad_peer_get_caps (otherpad);
+  if (caps) {
+    GstCaps *temp;
+    const GstCaps *templ;
+
+    templ = gst_pad_get_pad_template_caps (otherpad);
+    temp = gst_caps_intersect (caps, templ);
+    gst_caps_unref (caps);
+    caps = temp;
+  } else {
+    caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
+  }
+
+  gst_object_unref (dvdspu);
+  return caps;
+}
+
+static gboolean
+dvdspu_video_event (GstPad * pad, GstEvent * event)
+{
+  GstDVDSpu *dvdspu = (GstDVDSpu *) (gst_object_get_parent (GST_OBJECT (pad)));
+  SpuState *state = &dvdspu->spu_state;
+  gboolean res = TRUE;
+
+  g_return_val_if_fail (dvdspu != NULL, FALSE);
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_CUSTOM_DOWNSTREAM:
+    case GST_EVENT_CUSTOM_DOWNSTREAM_OOB:
+    {
+      const GstStructure *structure = gst_event_get_structure (event);
+      const char *event_type;
+
+      if (!gst_structure_has_name (structure, "application/x-gst-dvd")) {
+        res = gst_pad_event_default (pad, event);
+        break;
+      }
+
+      event_type = gst_structure_get_string (structure, "event");
+      GST_DEBUG_OBJECT (dvdspu,
+          "DVD event of type %s on video pad", event_type);
+
+      if (strcmp (event_type, "dvd-still") == 0) {
+        gboolean in_still;
+
+        if (gst_structure_get_boolean (structure, "still-state", &in_still)) {
+          GSTDVDSPU_LOCK (dvdspu);
+          if (in_still) {
+            state->flags |= SPU_STATE_STILL_FRAME;
+            /* Entering still. Advance the SPU to make sure the state is 
+             * up to date */
+            dvdspu_check_still_updates (dvdspu);
+            /* And re-draw the still frame to make sure it appears on
+             * screen, otherwise the last frame  might have been discarded 
+             * by QoS */
+            dvdspu_redraw_still (dvdspu);
+          } else
+            state->flags &= ~(SPU_STATE_STILL_FRAME);
+          GSTDVDSPU_UNLOCK (dvdspu);
+        }
+        gst_event_unref (event);
+        res = TRUE;
+      } else
+        res = gst_pad_event_default (pad, event);
+      break;
+    }
+    case GST_EVENT_NEWSEGMENT:
+    {
+      gboolean update;
+      gdouble rate, arate;
+      GstFormat format;
+      gint64 start, stop, time;
+
+      gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
+          &start, &stop, &time);
+
+      if (format != GST_FORMAT_TIME)
+        return FALSE;
+
+      /* Only print updates if they have an end time (don't print start_time
+       * updates */
+      GST_DEBUG_OBJECT (dvdspu, "video pad NewSegment:"
+          " Update %d, rate %g arate %g format %d start %" GST_TIME_FORMAT
+          " %" GST_TIME_FORMAT " position %" GST_TIME_FORMAT,
+          update, rate, arate, format, GST_TIME_ARGS (start),
+          GST_TIME_ARGS (stop), GST_TIME_ARGS (time));
+
+      GSTDVDSPU_LOCK (dvdspu);
+
+      if (update && start > dvdspu->video_seg.last_stop) {
+#if 0
+        g_print ("Segment update for video. Advancing from %" GST_TIME_FORMAT
+            " to %" GST_TIME_FORMAT "\n",
+            GST_TIME_ARGS (dvdspu->video_seg.last_stop), GST_TIME_ARGS (start));
+#endif
+        while (dvdspu->video_seg.last_stop < start &&
+            !(state->flags & SPU_STATE_STILL_FRAME)) {
+          GSTDVDSPU_UNLOCK (dvdspu);
+          if (dvspu_handle_vid_buffer (dvdspu, NULL) != GST_FLOW_OK) {
+            GSTDVDSPU_LOCK (dvdspu);
+            break;
+          }
+          GSTDVDSPU_LOCK (dvdspu);
+        }
+      }
+
+      gst_segment_set_newsegment_full (&dvdspu->video_seg, update, rate, arate,
+          format, start, stop, time);
+
+      GSTDVDSPU_UNLOCK (dvdspu);
+
+      res = gst_pad_event_default (pad, event);
+      break;
+    }
+    case GST_EVENT_FLUSH_START:
+      res = gst_pad_event_default (pad, event);
+      goto done;
+    case GST_EVENT_FLUSH_STOP:
+      res = gst_pad_event_default (pad, event);
+
+      GSTDVDSPU_LOCK (dvdspu);
+      gst_segment_init (&dvdspu->video_seg, GST_FORMAT_UNDEFINED);
+      gst_buffer_replace (&dvdspu->ref_frame, NULL);
+      gst_buffer_replace (&dvdspu->pending_frame, NULL);
+
+      GSTDVDSPU_UNLOCK (dvdspu);
+      goto done;
+    default:
+      res = gst_pad_event_default (pad, event);
+      break;
+  }
+
+done:
+  gst_object_unref (dvdspu);
+  return res;
+#if 0
+error:
+  gst_event_unref (event);
+  return FALSE;
+#endif
+}
+
+static GstFlowReturn
+dvdspu_video_chain (GstPad * pad, GstBuffer * buf)
+{
+  GstDVDSpu *dvdspu = (GstDVDSpu *) (gst_object_get_parent (GST_OBJECT (pad)));
+  GstFlowReturn ret;
+
+  g_return_val_if_fail (dvdspu != NULL, GST_FLOW_ERROR);
+
+  GST_LOG_OBJECT (dvdspu, "video buffer %p with TS %" GST_TIME_FORMAT,
+      buf, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
+
+  ret = dvspu_handle_vid_buffer (dvdspu, buf);
+
+  gst_object_unref (dvdspu);
+
+  return ret;
+}
+
+static GstFlowReturn
+dvspu_handle_vid_buffer (GstDVDSpu * dvdspu, GstBuffer * buf)
+{
+  GstClockTime new_ts;
+  GstFlowReturn ret;
+  gboolean using_ref = FALSE;
+
+  GSTDVDSPU_LOCK (dvdspu);
+
+  if (buf == NULL) {
+    GstClockTime next_ts = dvdspu->video_seg.last_stop;
+
+    next_ts += gst_util_uint64_scale_int (GST_SECOND,
+        dvdspu->spu_state.fps_d, dvdspu->spu_state.fps_n);
+
+    /* NULL buffer was passed - use the reference frame and update the timestamp,
+     * or else there's nothing to draw, and just return GST_FLOW_OK */
+    if (dvdspu->ref_frame == NULL) {
+      gst_segment_set_last_stop (&dvdspu->video_seg, GST_FORMAT_TIME, next_ts);
+      goto no_ref_frame;
+    }
+
+    buf = gst_buffer_copy (dvdspu->ref_frame);
+
+#if 0
+    g_print ("Duping frame %" GST_TIME_FORMAT " with new TS %" GST_TIME_FORMAT
+        "\n", GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
+        GST_TIME_ARGS (next_ts));
+#endif
+
+    GST_BUFFER_TIMESTAMP (buf) = next_ts;
+    using_ref = TRUE;
+  }
+
+  if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
+    gst_segment_set_last_stop (&dvdspu->video_seg, GST_FORMAT_TIME,
+        GST_BUFFER_TIMESTAMP (buf));
+  }
+
+  new_ts = gst_segment_to_running_time (&dvdspu->video_seg, GST_FORMAT_TIME,
+      dvdspu->video_seg.last_stop);
+
+#if 0
+  g_print ("TS %" GST_TIME_FORMAT " running: %" GST_TIME_FORMAT "\n",
+      GST_TIME_ARGS (dvdspu->video_seg.last_stop), GST_TIME_ARGS (new_ts));
+#endif
+
+  dvdspu_advance_spu (dvdspu, new_ts);
+
+  /* If we have an active SPU command set, we store a copy of the frame in case
+   * we hit a still and need to draw on it. Otherwise, a reference is
+   * sufficient in case we later encounter a still */
+  if ((dvdspu->spu_state.flags & SPU_STATE_FORCED_DSP) ||
+      ((dvdspu->spu_state.flags & SPU_STATE_FORCED_ONLY) == 0 &&
+          (dvdspu->spu_state.flags & SPU_STATE_DISPLAY))) {
+    if (using_ref == FALSE) {
+      GstBuffer *copy;
+
+      /* Take a copy in case we hit a still frame and need the pristine 
+       * frame around */
+      copy = gst_buffer_copy (buf);
+      gst_buffer_replace (&dvdspu->ref_frame, copy);
+      gst_buffer_unref (copy);
+    }
+
+    /* Render the SPU overlay onto the buffer */
+    buf = gst_buffer_make_writable (buf);
+
+    gstdvdspu_render_spu (dvdspu, buf);
+  } else {
+    if (using_ref == FALSE) {
+      /* Not going to draw anything on this frame, just store a reference
+       * in case we hit a still frame and need it */
+      gst_buffer_replace (&dvdspu->ref_frame, buf);
+    }
+  }
+
+  if (dvdspu->spu_state.flags & SPU_STATE_STILL_FRAME) {
+    GST_DEBUG_OBJECT (dvdspu, "Outputting buffer with TS %" GST_TIME_FORMAT
+        "from chain while in still",
+        GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
+  }
+
+  GSTDVDSPU_UNLOCK (dvdspu);
+
+  /* just push out the incoming buffer without touching it */
+  ret = gst_pad_push (dvdspu->srcpad, buf);
+
+  return ret;
+
+no_ref_frame:
+
+  GSTDVDSPU_UNLOCK (dvdspu);
+
+  return GST_FLOW_OK;
+}
+
+/* With SPU LOCK */
+static void
+dvdspu_redraw_still (GstDVDSpu * dvdspu)
+{
+  /* If we have an active SPU command set and a reference frame, copy the
+   * frame, redraw the SPU and store it as the pending frame for output */
+  if (dvdspu->ref_frame) {
+    if ((dvdspu->spu_state.flags & SPU_STATE_FORCED_DSP) ||
+        ((dvdspu->spu_state.flags & SPU_STATE_FORCED_ONLY) == 0 &&
+            (dvdspu->spu_state.flags & SPU_STATE_DISPLAY))) {
+      GstBuffer *buf = gst_buffer_copy (dvdspu->ref_frame);
+
+      buf = gst_buffer_make_writable (buf);
+
+      GST_LOG_OBJECT (dvdspu, "Redraw due to Still Frame with ref %p",
+          dvdspu->ref_frame);
+      GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
+      GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
+      GST_BUFFER_DURATION (buf) = GST_CLOCK_TIME_NONE;
+
+      /* Render the SPU overlay onto the buffer */
+      gstdvdspu_render_spu (dvdspu, buf);
+      gst_buffer_replace (&dvdspu->pending_frame, buf);
+    } else {
+      GST_LOG_OBJECT (dvdspu,
+          "Redraw due to Still Frame skipped - no SPU to draw");
+    }
+  } else {
+    GST_LOG_OBJECT (dvdspu, "Not redrawing still frame - no ref frame");
+  }
+}
+
+static void
+gstdvdspu_parse_chg_colcon (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
+{
+  SpuState *state = &dvdspu->spu_state;
+  guint8 *cur;
+  gint16 n_entries;
+  gint16 i;
+
+  /* Clear any existing chg colcon info */
+  state->n_line_ctrl_i = 0;
+  if (state->line_ctrl_i != NULL) {
+    g_free (state->line_ctrl_i);
+    state->line_ctrl_i = NULL;
+  }
+  GST_DEBUG_OBJECT (dvdspu, "Change Color & Contrast. Pixel data = %d bytes",
+      (gint16) (end - data));
+
+  /* Count the number of entries we'll need */
+  n_entries = 0;
+  for (cur = data; cur < end;) {
+    guint8 n_changes;
+    guint32 code;
+
+    if (cur + 4 > end)
+      break;
+
+    code = GST_READ_UINT32_BE (cur);
+    if (code == 0x0fffffff)
+      break;                    /* Termination code */
+
+    n_changes = CLAMP ((cur[2] >> 4), 1, 8);
+    cur += 4 + (6 * n_changes);
+
+    if (cur > end)
+      break;                    /* Invalid entry overrunning buffer */
+
+    n_entries++;
+  }
+
+  state->n_line_ctrl_i = n_entries;
+  state->line_ctrl_i = g_new (SpuLineCtrlI, n_entries);
+
+  cur = data;
+  for (i = 0; i < n_entries; i++) {
+    SpuLineCtrlI *cur_line_ctrl = state->line_ctrl_i + i;
+    guint8 n_changes = CLAMP ((cur[2] >> 4), 1, 8);
+    guint8 c;
+
+    cur_line_ctrl->n_changes = n_changes;
+    cur_line_ctrl->top = ((cur[0] << 8) & 0x300) | cur[1];
+    cur_line_ctrl->bottom = ((cur[2] << 8) & 0x300) | cur[3];
+
+    GST_LOG_OBJECT (dvdspu, "ChgColcon Entry %d Top: %d Bottom: %d Changes: %d",
+        i, cur_line_ctrl->top, cur_line_ctrl->bottom, n_changes);
+    cur += 4;
+
+    for (c = 0; c < n_changes; c++) {
+      SpuPixCtrlI *cur_pix_ctrl = cur_line_ctrl->pix_ctrl_i + c;
+
+      cur_pix_ctrl->left = ((cur[0] << 8) & 0x300) | cur[1];
+      cur_pix_ctrl->palette = GST_READ_UINT32_BE (cur + 2);
+      GST_LOG_OBJECT (dvdspu, "  %d: left: %d palette 0x%x", c,
+          cur_pix_ctrl->left, cur_pix_ctrl->palette);
+      cur += 6;
+    }
+  }
+}
+
+static void
+dvdspu_exec_cmd_blk (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
+{
+  SpuState *state = &dvdspu->spu_state;
+
+  while (data < end) {
+    guint8 cmd;
+
+    cmd = data[0];
+
+    switch (cmd) {
+      case SPU_CMD_FSTA_DSP:
+        GST_DEBUG_OBJECT (dvdspu, " Forced Display");
+        state->flags |= SPU_STATE_FORCED_DSP;
+        data += 1;
+        break;
+      case SPU_CMD_DSP:
+        GST_DEBUG_OBJECT (dvdspu, " Display On");
+        state->flags |= SPU_STATE_DISPLAY;
+        data += 1;
+        break;
+      case SPU_CMD_STP_DSP:
+        GST_DEBUG_OBJECT (dvdspu, " Display Off");
+        state->flags &= ~(SPU_STATE_FORCED_DSP | SPU_STATE_DISPLAY);
+        data += 1;
+        break;
+      case SPU_CMD_SET_COLOR:{
+        if (G_UNLIKELY (data + 3 >= end))
+          return;               /* Invalid SET_COLOR cmd at the end of the blk */
+
+        state->main_idx[3] = data[1] >> 4;
+        state->main_idx[2] = data[1] & 0x0f;
+        state->main_idx[1] = data[2] >> 4;
+        state->main_idx[0] = data[2] & 0x0f;
+
+        state->main_pal_dirty = TRUE;
+
+        GST_DEBUG_OBJECT (dvdspu,
+            " Set Color bg %u pattern %u emph-1 %u emph-2 %u",
+            state->main_idx[0], state->main_idx[1], state->main_idx[2],
+            state->main_idx[3]);
+        data += 3;
+        break;
+      }
+      case SPU_CMD_SET_ALPHA:{
+        if (G_UNLIKELY (data + 3 >= end))
+          return;               /* Invalid SET_ALPHA cmd at the end of the blk */
+
+        state->main_alpha[3] = data[1] >> 4;
+        state->main_alpha[2] = data[1] & 0x0f;
+        state->main_alpha[1] = data[2] >> 4;
+        state->main_alpha[0] = data[2] & 0x0f;
+
+        state->main_pal_dirty = TRUE;
+
+        GST_DEBUG_OBJECT (dvdspu,
+            " Set Alpha bg %u pattern %u emph-1 %u emph-2 %u",
+            state->main_alpha[0], state->main_alpha[1], state->main_alpha[2],
+            state->main_alpha[3]);
+        data += 3;
+        break;
+      }
+      case SPU_CMD_SET_DAREA:{
+        SpuRect *r = &state->disp_rect;
+
+        if (G_UNLIKELY (data + 7 >= end))
+          return;               /* Invalid SET_DAREA cmd at the end of the blk */
+
+        r->top = ((data[4] & 0x3f) << 4) | ((data[5] & 0xe0) >> 4);
+        r->left = ((data[1] & 0x3f) << 4) | ((data[2] & 0xf0) >> 4);
+        r->right = ((data[2] & 0x03) << 8) | data[3];
+        r->bottom = ((data[5] & 0x03) << 8) | data[6];
+
+        GST_DEBUG_OBJECT (dvdspu,
+            " Set Display Area top %u left %u bottom %u right %u", r->top,
+            r->left, r->bottom, r->right);
+
+        data += 7;
+        break;
+      }
+      case SPU_CMD_DSPXA:{
+        if (G_UNLIKELY (data + 5 >= end))
+          return;               /* Invalid SET_DSPXE cmd at the end of the blk */
+
+        state->pix_data[0] = GST_READ_UINT16_BE (data + 1);
+        state->pix_data[1] = GST_READ_UINT16_BE (data + 3);
+        /* Store a reference to the current command buffer, as that's where 
+         * we'll need to take our pixel data from */
+        gst_buffer_replace (&state->pix_buf, state->buf);
+
+        GST_DEBUG_OBJECT (dvdspu, " Set Pixel Data Offsets top: %u bot: %u",
+            state->pix_data[0], state->pix_data[1]);
+
+        data += 5;
+        break;
+      }
+      case SPU_CMD_CHG_COLCON:{
+        guint16 field_size;
+
+        GST_DEBUG_OBJECT (dvdspu, " Set Color & Contrast Change");
+        if (G_UNLIKELY (data + 3 >= end))
+          return;               /* Invalid CHG_COLCON cmd at the end of the blk */
+
+        data++;
+        field_size = GST_READ_UINT16_BE (data);
+
+        if (G_UNLIKELY (data + field_size >= end))
+          return;               /* Invalid CHG_COLCON cmd at the end of the blk */
+
+        gstdvdspu_parse_chg_colcon (dvdspu, data + 2, data + field_size);
+        state->line_ctrl_i_pal_dirty = TRUE;
+        data += field_size;
+        break;
+      }
+      case SPU_CMD_END:
+      default:
+        GST_DEBUG_OBJECT (dvdspu, " END");
+        data = end;
+        break;
+    }
+  }
+}
+
+static void
+dvdspu_finish_spu_buf (GstDVDSpu * dvdspu)
+{
+  SpuState *state = &dvdspu->spu_state;
+
+  state->next_ts = state->base_ts = GST_CLOCK_TIME_NONE;
+  gst_buffer_replace (&state->buf, NULL);
+
+  GST_DEBUG_OBJECT (dvdspu, "Finished SPU buffer");
+}
+
+static gboolean
+dvdspu_setup_cmd_blk (GstDVDSpu * dvdspu, guint16 cmd_blk_offset,
+    guint8 * start, guint8 * end)
+{
+  SpuState *state = &dvdspu->spu_state;
+  guint16 delay;
+  guint8 *cmd_blk = start + cmd_blk_offset;
+
+  if (G_UNLIKELY (cmd_blk + 5 >= end))
+    return FALSE;               /* No valid command block to read */
+
+  delay = GST_READ_UINT16_BE (cmd_blk);
+  state->next_ts = state->base_ts + STM_TO_GST (delay);
+  state->cur_cmd_blk = cmd_blk_offset;
+
+  GST_DEBUG_OBJECT (dvdspu, "Setup CMD Block @ %u with TS %" GST_TIME_FORMAT,
+      state->cur_cmd_blk, GST_TIME_ARGS (state->next_ts));
+  return TRUE;
+}
+
+static void
+dvdspu_handle_new_spu_buf (GstDVDSpu * dvdspu, SpuPacket * packet)
+{
+  guint8 *start, *end;
+  SpuState *state = &dvdspu->spu_state;
+
+  if (G_UNLIKELY (GST_BUFFER_SIZE (packet->buf) < 4))
+    goto invalid;
+
+  if (state->buf != NULL) {
+    gst_buffer_unref (state->buf);
+    state->buf = NULL;
+  }
+  state->buf = packet->buf;
+  state->base_ts = packet->event_ts;
+
+  start = GST_BUFFER_DATA (state->buf);
+  end = start + GST_BUFFER_SIZE (state->buf);
+
+  /* Configure the first command block in this buffer as our initial blk */
+  state->cur_cmd_blk = GST_READ_UINT16_BE (start + 2);
+  dvdspu_setup_cmd_blk (dvdspu, state->cur_cmd_blk, start, end);
+  /* Clear existing chg-colcon info */
+  if (state->line_ctrl_i != NULL) {
+    g_free (state->line_ctrl_i);
+    state->line_ctrl_i = NULL;
+  }
+  return;
+
+invalid:
+  /* Invalid buffer */
+  dvdspu_finish_spu_buf (dvdspu);
+}
+
+static void
+dvdspu_handle_dvd_event (GstDVDSpu * dvdspu, GstEvent * event)
+{
+  const gchar *event_type;
+  const GstStructure *structure = gst_event_get_structure (event);
+  SpuState *state = &dvdspu->spu_state;
+  gboolean hl_change = FALSE;
+
+  event_type = gst_structure_get_string (structure, "event");
+  GST_INFO_OBJECT (dvdspu, "DVD event of type %s on subp pad OOB=%d",
+      event_type, (GST_EVENT_TYPE (event) == GST_EVENT_CUSTOM_DOWNSTREAM_OOB));
+
+  if (strcmp (event_type, "dvd-spu-clut-change") == 0) {
+    gchar prop_name[32];
+    gint i;
+    gint entry;
+
+    for (i = 0; i < 16; i++) {
+      g_snprintf (prop_name, 32, "clut%02d", i);
+      if (!gst_structure_get_int (structure, prop_name, &entry))
+        entry = 0;
+      state->current_clut[i] = (guint32) entry;
+    }
+
+    state->main_pal_dirty = TRUE;
+    state->hl_pal_dirty = TRUE;
+    state->line_ctrl_i_pal_dirty = TRUE;
+    hl_change = TRUE;
+  } else if (strcmp (event_type, "dvd-spu-highlight") == 0) {
+    gint val;
+
+    if (gst_structure_get_int (structure, "palette", &val)) {
+      state->hl_idx[3] = ((guint32) (val) >> 28) & 0x0f;
+      state->hl_idx[2] = ((guint32) (val) >> 24) & 0x0f;
+      state->hl_idx[1] = ((guint32) (val) >> 20) & 0x0f;
+      state->hl_idx[0] = ((guint32) (val) >> 16) & 0x0f;
+
+      state->hl_alpha[3] = ((guint32) (val) >> 12) & 0x0f;
+      state->hl_alpha[2] = ((guint32) (val) >> 8) & 0x0f;
+      state->hl_alpha[1] = ((guint32) (val) >> 4) & 0x0f;
+      state->hl_alpha[0] = ((guint32) (val) >> 0) & 0x0f;
+
+      state->hl_pal_dirty = TRUE;
+    }
+    if (gst_structure_get_int (structure, "sx", &val))
+      state->hl_rect.left = (gint16) val;
+    if (gst_structure_get_int (structure, "sy", &val))
+      state->hl_rect.top = (gint16) val;
+    if (gst_structure_get_int (structure, "ex", &val))
+      state->hl_rect.right = (gint16) val;
+    if (gst_structure_get_int (structure, "ey", &val))
+      state->hl_rect.bottom = (gint16) val;
+
+    GST_INFO_OBJECT (dvdspu, "Highlight rect is now (%d,%d) to (%d,%d)",
+        state->hl_rect.left, state->hl_rect.top,
+        state->hl_rect.right, state->hl_rect.bottom);
+    hl_change = TRUE;
+  } else if (strcmp (event_type, "dvd-spu-reset-highlight") == 0) {
+    if (state->hl_rect.top != -1 || state->hl_rect.bottom != -1)
+      hl_change = TRUE;
+    state->hl_rect.top = -1;
+    state->hl_rect.bottom = -1;
+    GST_INFO_OBJECT (dvdspu, "Highlight off");
+  } else if (strcmp (event_type, "dvd-set-subpicture-track") == 0) {
+    gboolean forced_only;
+
+    if (gst_structure_get_boolean (structure, "forced-only", &forced_only)) {
+      gboolean was_forced = (state->flags & SPU_STATE_FORCED_ONLY);
+
+      if (forced_only)
+        state->flags |= SPU_STATE_FORCED_ONLY;
+      else
+        state->flags &= ~(SPU_STATE_FORCED_ONLY);
+
+      if ((was_forced && !forced_only) || (!was_forced && forced_only))
+        hl_change = TRUE;
+    }
+  }
+
+  if (hl_change && (state->flags & SPU_STATE_STILL_FRAME)) {
+    dvdspu_redraw_still (dvdspu);
+  }
+
+  gst_event_unref (event);
+}
+
+#if 0
+static void
+dvdspu_dump_dcsq (GstDVDSpu * dvdspu,
+    GstClockTime start_ts, GstBuffer * spu_buf)
+{
+  guint16 cmd_blk_offset;
+  guint16 next_blk;
+  guint8 *start, *end;
+
+  start = GST_BUFFER_DATA (spu_buf);
+  end = start + GST_BUFFER_SIZE (spu_buf);
+
+  g_return_if_fail (start != NULL);
+
+  /* First command */
+  next_blk = GST_READ_UINT16_BE (start + 2);
+  cmd_blk_offset = 0;
+
+  /* Loop through all commands */
+  g_print ("SPU begins @ %" GST_TIME_FORMAT " offset %u\n",
+      GST_TIME_ARGS (start_ts), next_blk);
+
+  while (cmd_blk_offset != next_blk) {
+    guint8 *data;
+    GstClockTime cmd_blk_ts;
+
+    cmd_blk_offset = next_blk;
+
+    if (G_UNLIKELY (start + cmd_blk_offset + 5 >= end))
+      break;                    /* No valid command to read */
+
+    data = start + cmd_blk_offset;
+
+    cmd_blk_ts = start_ts + STM_TO_GST (GST_READ_UINT16_BE (data));
+    next_blk = GST_READ_UINT16_BE (data + 2);
+
+    g_print ("Cmd Blk @ offset %u next %u ts %" GST_TIME_FORMAT "\n",
+        cmd_blk_offset, next_blk, GST_TIME_ARGS (cmd_blk_ts));
+
+    data += 4;
+    dvdspu_exec_cmd_blk (dvdspu, data, end);
+  }
+}
+#endif
+
+/* Advance the SPU packet/command queue to a time. new_ts is in running time */
+static void
+dvdspu_advance_spu (GstDVDSpu * dvdspu, GstClockTime new_ts)
+{
+  SpuState *state = &dvdspu->spu_state;
+
+  while (state->next_ts == GST_CLOCK_TIME_NONE || state->next_ts <= new_ts) {
+    guint8 *start, *cmd_blk, *end;
+    guint16 next_blk;
+
+    if (state->buf == NULL) {
+      GstClockTime vid_run_ts;
+
+      /* No current command buffer, try and get one */
+      SpuPacket *packet = (SpuPacket *) g_queue_pop_head (dvdspu->pending_spus);
+
+      if (packet == NULL)
+        return;                 /* No SPU packets available */
+
+      vid_run_ts =
+          gst_segment_to_running_time (&dvdspu->video_seg, GST_FORMAT_TIME,
+          dvdspu->video_seg.last_stop);
+      GST_LOG_OBJECT (dvdspu,
+          "Popped new SPU packet with TS %" GST_TIME_FORMAT
+          ". Video last_stop=%" GST_TIME_FORMAT " (%" GST_TIME_FORMAT ")",
+          GST_TIME_ARGS (packet->event_ts), GST_TIME_ARGS (vid_run_ts),
+          GST_TIME_ARGS (dvdspu->video_seg.last_stop));
+
+      if (packet->buf) {
+        // dvdspu_dump_dcsq (dvdspu, packet->event_ts, packet->buf);
+        dvdspu_handle_new_spu_buf (dvdspu, packet);
+      }
+      if (packet->event)
+        dvdspu_handle_dvd_event (dvdspu, packet->event);
+
+      g_free (packet);
+      continue;
+    }
+
+    GST_DEBUG_OBJECT (dvdspu,
+        "Advancing SPU from TS %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
+        GST_TIME_ARGS (state->next_ts), GST_TIME_ARGS (new_ts));
+
+    /* If we get here, we have an SPU buffer, and it's time to process the
+     * next cmd */
+    g_assert (state->buf != NULL && state->next_ts <= new_ts);
+
+    GST_DEBUG_OBJECT (dvdspu, "Executing cmd blk with TS %" GST_TIME_FORMAT
+        " @ offset %u", GST_TIME_ARGS (state->next_ts), state->cur_cmd_blk);
+
+    start = GST_BUFFER_DATA (state->buf);
+    end = start + GST_BUFFER_SIZE (state->buf);
+
+    cmd_blk = start + state->cur_cmd_blk;
+
+    if (G_UNLIKELY (cmd_blk + 5 >= end)) {
+      /* Invalid. Finish the buffer and loop again */
+      dvdspu_finish_spu_buf (dvdspu);
+      continue;
+    }
+
+    dvdspu_exec_cmd_blk (dvdspu, cmd_blk + 4, end);
+
+    next_blk = GST_READ_UINT16_BE (cmd_blk + 2);
+    if (next_blk != state->cur_cmd_blk) {
+      /* Advance to the next block of commands */
+      dvdspu_setup_cmd_blk (dvdspu, next_blk, start, end);
+    } else {
+      /* Next Block points to the current block, so we're finished with this
+       * SPU buffer */
+      dvdspu_finish_spu_buf (dvdspu);
+    }
+  }
+}
+
+static void
+dvdspu_check_still_updates (GstDVDSpu * dvdspu)
+{
+  GstClockTime sub_ts;
+  GstClockTime vid_ts;
+
+  if (dvdspu->spu_state.flags & SPU_STATE_STILL_FRAME) {
+
+    vid_ts = gst_segment_to_running_time (&dvdspu->video_seg,
+        GST_FORMAT_TIME, dvdspu->video_seg.last_stop);
+    sub_ts = gst_segment_to_running_time (&dvdspu->subp_seg,
+        GST_FORMAT_TIME, dvdspu->subp_seg.last_stop);
+
+    vid_ts = MAX (vid_ts, sub_ts);
+
+    GST_DEBUG_OBJECT (dvdspu,
+        "In still frame - advancing TS to %" GST_TIME_FORMAT
+        " to process SPU buffer", GST_TIME_ARGS (vid_ts));
+    dvdspu_advance_spu (dvdspu, vid_ts);
+  }
+}
+
+static GstFlowReturn
+dvdspu_subpic_chain (GstPad * pad, GstBuffer * buf)
+{
+  GstDVDSpu *dvdspu = (GstDVDSpu *) (gst_object_get_parent (GST_OBJECT (pad)));
+
+  g_return_val_if_fail (dvdspu != NULL, GST_FLOW_ERROR);
+
+  GST_INFO_OBJECT (dvdspu, "Have subpicture buffer with timestamp %"
+      GST_TIME_FORMAT " and size %u",
+      GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_BUFFER_SIZE (buf));
+
+  GSTDVDSPU_LOCK (dvdspu);
+
+  if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
+    gst_segment_set_last_stop (&dvdspu->subp_seg, GST_FORMAT_TIME,
+        GST_BUFFER_TIMESTAMP (buf));
+  }
+
+  if (dvdspu->partial_spu != NULL) {
+    dvdspu->partial_spu = gst_buffer_join (dvdspu->partial_spu, buf);
+  } else {
+    /* If we don't yet have a buffer, wait for one with a timestamp,
+     * since that will avoid collecting the 2nd half of a partial buf */
+    if (GST_BUFFER_TIMESTAMP_IS_VALID (buf))
+      dvdspu->partial_spu = buf;
+    else
+      gst_buffer_unref (buf);
+  }
+
+  if (dvdspu->partial_spu != NULL && GST_BUFFER_SIZE (dvdspu->partial_spu) > 4) {
+    guint16 packet_size;
+    guint8 *data;
+
+    data = GST_BUFFER_DATA (dvdspu->partial_spu);
+    packet_size = GST_READ_UINT16_BE (data);
+
+    if (packet_size == GST_BUFFER_SIZE (dvdspu->partial_spu)) {
+      SpuPacket *spu_packet;
+      GstClockTime ts;
+      GstClockTime run_ts = GST_CLOCK_TIME_NONE;
+
+      GST_DEBUG_OBJECT (dvdspu,
+          "Complete subpicture buffer of %u bytes with TS %" GST_TIME_FORMAT,
+          GST_BUFFER_SIZE (dvdspu->partial_spu),
+          GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (dvdspu->partial_spu)));
+
+      /* Decide whether to pass this buffer through to the rendering code */
+      ts = GST_BUFFER_TIMESTAMP (dvdspu->partial_spu);
+      if (GST_CLOCK_TIME_IS_VALID (ts)) {
+        if (ts < (GstClockTime) dvdspu->subp_seg.start) {
+          GstClockTimeDiff diff = dvdspu->subp_seg.start - ts;
+
+          /* Buffer starts before segment, see if we can calculate a running time */
+          run_ts =
+              gst_segment_to_running_time (&dvdspu->subp_seg, GST_FORMAT_TIME,
+              dvdspu->subp_seg.start);
+          if (run_ts >= (GstClockTime) diff)
+            run_ts -= diff;
+          else
+            run_ts = GST_CLOCK_TIME_NONE;       /* No running time possible for this subpic */
+        } else {
+          /* TS within segment, convert to running time */
+          run_ts =
+              gst_segment_to_running_time (&dvdspu->subp_seg, GST_FORMAT_TIME,
+              ts);
+        }
+      }
+
+      if (GST_CLOCK_TIME_IS_VALID (run_ts)) {
+        /* Complete SPU packet, push it onto the queue for processing when
+         * video packets come past */
+        spu_packet = g_new0 (SpuPacket, 1);
+        spu_packet->buf = dvdspu->partial_spu;
+
+        /* Store the activation time of this buffer in running time */
+        spu_packet->event_ts =
+            gst_segment_to_running_time (&dvdspu->subp_seg, GST_FORMAT_TIME,
+            ts);
+        GST_INFO_OBJECT (dvdspu,
+            "Pushing SPU buf with TS %" GST_TIME_FORMAT " running time %"
+            GST_TIME_FORMAT, GST_TIME_ARGS (ts),
+            GST_TIME_ARGS (spu_packet->event_ts));
+
+        g_queue_push_tail (dvdspu->pending_spus, spu_packet);
+        dvdspu->partial_spu = NULL;
+
+        /* In a still frame condition, advance the SPU to make sure the state is 
+         * up to date */
+        dvdspu_check_still_updates (dvdspu);
+      } else {
+        gst_buffer_unref (dvdspu->partial_spu);
+        dvdspu->partial_spu = NULL;
+      }
+    } else if (packet_size < GST_BUFFER_SIZE (dvdspu->partial_spu)) {
+      /* Somehow we collected too much - something is wrong. Drop the
+       * packet entirely and wait for a new one */
+      GST_DEBUG_OBJECT (dvdspu, "Discarding invalid SPU buffer of size %u",
+          GST_BUFFER_SIZE (dvdspu->partial_spu));
+
+      gst_buffer_unref (dvdspu->partial_spu);
+      dvdspu->partial_spu = NULL;
+    }
+  }
+
+  GSTDVDSPU_UNLOCK (dvdspu);
+
+  gst_object_unref (dvdspu);
+  return GST_FLOW_OK;
+}
+
+static gboolean
+dvdspu_subpic_event (GstPad * pad, GstEvent * event)
+{
+  GstDVDSpu *dvdspu = (GstDVDSpu *) (gst_object_get_parent (GST_OBJECT (pad)));
+  gboolean res = TRUE;
+
+  g_return_val_if_fail (dvdspu != NULL, FALSE);
+
+  /* Some events on the subpicture sink pad just get ignored, like 
+   * FLUSH_START */
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_CUSTOM_DOWNSTREAM:
+    case GST_EVENT_CUSTOM_DOWNSTREAM_OOB:
+    {
+      const GstStructure *structure = gst_event_get_structure (event);
+      gboolean need_push;
+
+      if (!gst_structure_has_name (structure, "application/x-gst-dvd")) {
+        res = gst_pad_event_default (pad, event);
+        break;
+      }
+
+      GSTDVDSPU_LOCK (dvdspu);
+      if (GST_EVENT_IS_SERIALIZED (event)) {
+        SpuPacket *spu_packet = g_new0 (SpuPacket, 1);
+
+        spu_packet->event = event;
+        g_queue_push_tail (dvdspu->pending_spus, spu_packet);
+      } else {
+        dvdspu_handle_dvd_event (dvdspu, event);
+      }
+
+      /* If the handle_dvd_event generated a pending frame, we
+       * need to synchronise with the video pad's stream lock and push it.
+       * This requires some dancing to preserve locking order and handle
+       * flushes correctly */
+      need_push = (dvdspu->pending_frame != NULL);
+      GSTDVDSPU_UNLOCK (dvdspu);
+      if (need_push) {
+        GstBuffer *to_push = NULL;
+        gboolean flushing;
+
+        GST_LOG_OBJECT (dvdspu, "Going for stream lock");
+        GST_PAD_STREAM_LOCK (dvdspu->videosinkpad);
+        GST_LOG_OBJECT (dvdspu, "Got stream lock");
+        GST_OBJECT_LOCK (dvdspu->videosinkpad);
+        flushing = GST_PAD_IS_FLUSHING (dvdspu->videosinkpad);
+        GST_OBJECT_UNLOCK (dvdspu->videosinkpad);
+
+        GSTDVDSPU_LOCK (dvdspu);
+        if (dvdspu->pending_frame == NULL || flushing) {
+          /* Got flushed while waiting for the stream lock */
+          GSTDVDSPU_UNLOCK (dvdspu);
+        } else {
+          to_push = dvdspu->pending_frame;
+          dvdspu->pending_frame = NULL;
+
+          GSTDVDSPU_UNLOCK (dvdspu);
+          gst_pad_push (dvdspu->srcpad, to_push);
+        }
+        GST_LOG_OBJECT (dvdspu, "Dropping stream lock");
+        GST_PAD_STREAM_UNLOCK (dvdspu->videosinkpad);
+      }
+
+      break;
+    }
+    case GST_EVENT_NEWSEGMENT:
+    {
+      gboolean update;
+      gdouble rate;
+      GstFormat format;
+      gint64 start, stop, time;
+      gdouble arate;
+
+      gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
+          &start, &stop, &time);
+
+      /* Only print updates if they have an end time (don't print start_time
+       * updates */
+      GST_DEBUG_OBJECT (dvdspu, "subpic pad NewSegment:"
+          " Update %d, rate %g arate %g format %d start %" GST_TIME_FORMAT
+          " %" GST_TIME_FORMAT " position %" GST_TIME_FORMAT,
+          update, rate, arate, format, GST_TIME_ARGS (start),
+          GST_TIME_ARGS (stop), GST_TIME_ARGS (time));
+
+      GSTDVDSPU_LOCK (dvdspu);
+      gst_segment_set_newsegment_full (&dvdspu->subp_seg, update, rate, arate,
+          format, start, stop, time);
+      GSTDVDSPU_UNLOCK (dvdspu);
+
+      gst_event_unref (event);
+      break;
+    }
+    case GST_EVENT_FLUSH_START:
+      gst_event_unref (event);
+      goto done;
+    case GST_EVENT_FLUSH_STOP:
+      GSTDVDSPU_LOCK (dvdspu);
+      dvdspu_flush_spu_info (dvdspu);
+      GSTDVDSPU_UNLOCK (dvdspu);
+
+      /* We don't forward flushes on the spu pad */
+      gst_event_unref (event);
+      goto done;
+    default:
+      res = gst_pad_event_default (pad, event);
+      break;
+  }
+
+done:
+  gst_object_unref (dvdspu);
+
+  return res;
+}
+
+static GstStateChangeReturn
+dvdspu_change_state (GstElement * element, GstStateChange transition)
+{
+  GstDVDSpu *dvdspu = (GstDVDSpu *) element;
+  GstStateChangeReturn ret;
+
+  ret = parent_class->change_state (element, transition);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_PAUSED_TO_READY:
+      GSTDVDSPU_LOCK (dvdspu);
+      dvdspu_clear (dvdspu);
+      GSTDVDSPU_UNLOCK (dvdspu);
+      break;
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+gboolean
+gstdvdspu_plugin_init (GstPlugin * plugin)
+{
+  GST_DEBUG_CATEGORY_INIT (dvdspu_debug, "gstdvdspu",
+      0, "DVD Sub-picture Overlay decoder/renderer");
+
+  return gst_element_register (plugin, "dvdspu",
+      GST_RANK_NONE, GST_TYPE_GSTDVDSPU);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "dvdspu",
+    "DVD Sub-picture Overlay element",
+    gstdvdspu_plugin_init,
+    VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
diff --git a/gst/dvdspu/gstdvdspu.h b/gst/dvdspu/gstdvdspu.h
new file mode 100644
index 00000000..46923a58
--- /dev/null
+++ b/gst/dvdspu/gstdvdspu.h
@@ -0,0 +1,226 @@
+/* GStreamer DVD Sub-Picture Unit
+ * Copyright (C) 2007 Fluendo S.A. <info@fluendo.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.
+ */
+#ifndef __GSTDVDSPU_H__
+#define __GSTDVDSPU_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_GSTDVDSPU \
+  (dvdspu_get_type())
+#define GSTDVDSPU(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GSTDVDSPU,GstDVDSpu))
+#define GSTDVDSPU_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GSTDVDSPU,GstDVDSpuClass))
+#define GST_IS_PLUGIN_TEMPLATE(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GSTDVDSPU))
+#define GST_IS_PLUGIN_TEMPLATE_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GSTDVDSPU))
+
+#define GSTDVDSPU_LOCK(s) g_mutex_lock ((s)->spu_lock);
+#define GSTDVDSPU_UNLOCK(s) g_mutex_unlock ((s)->spu_lock);
+
+typedef struct GstDVDSpu      GstDVDSpu;
+typedef struct GstDVDSpuClass GstDVDSpuClass;
+typedef struct SpuRect SpuRect;
+typedef struct SpuPixCtrlI SpuPixCtrlI;
+typedef struct SpuLineCtrlI SpuLineCtrlI;
+typedef struct SpuColour SpuColour;
+typedef enum SpuStateFlags SpuStateFlags;
+typedef struct SpuState SpuState;
+typedef struct SpuPacket SpuPacket;
+
+typedef enum SpuCmd SpuCmd;
+
+/* Describe the limits of a rectangle */
+struct SpuRect {
+  gint16 left;
+  gint16 top;
+  gint16 right;
+  gint16 bottom;
+};
+
+/* Store a pre-multiplied colour value. The YUV fields hold the YUV values
+ * multiplied by the 8-bit alpha, to save computing it while rendering */
+struct SpuColour {
+  guint16 Y;
+  guint16 U;
+  guint16 V;
+  guint8 A;
+};
+
+/* Pixel Control Info from a Change Color Contrast command */
+struct SpuPixCtrlI {
+  gint16 left;
+  guint32 palette;
+
+  /* Pre-multiplied palette values, updated as
+   * needed */
+  SpuColour pal_cache[4];
+};
+
+struct SpuLineCtrlI {
+  guint8 n_changes; /* 1 to 8 */
+  SpuPixCtrlI pix_ctrl_i[8];
+
+  gint16 top;
+  gint16 bottom;
+};
+
+enum SpuCmd {
+  SPU_CMD_FSTA_DSP     = 0x00, /* Forced Display */
+  SPU_CMD_DSP          = 0x01, /* Display Start */
+  SPU_CMD_STP_DSP      = 0x02, /* Display Off */
+  SPU_CMD_SET_COLOR    = 0x03, /* Set the color indexes for the palette */
+  SPU_CMD_SET_ALPHA    = 0x04, /* Set the alpha indexes for the palette */
+  SPU_CMD_SET_DAREA    = 0x05, /* Set the display area for the SPU */
+  SPU_CMD_DSPXA        = 0x06, /* Pixel data addresses */
+  SPU_CMD_CHG_COLCON   = 0x07, /* Change Color & Contrast */
+  SPU_CMD_END          = 0xff
+};
+
+enum SpuStateFlags {
+  SPU_STATE_NONE        = 0x00,
+  /* Flags cleared on a flush */
+  SPU_STATE_DISPLAY     = 0x01,
+  SPU_STATE_FORCED_DSP  = 0x02,
+  SPU_STATE_STILL_FRAME = 0x04,
+  /* Persistent flags */
+  SPU_STATE_FORCED_ONLY = 0x100
+};
+
+#define SPU_STATE_FLAGS_MASK (0xff)
+
+struct SpuState {
+  GstClockTime next_ts; /* Next event TS in running time */
+
+  GstClockTime base_ts; /* base TS for cmd blk delays in running time */
+  GstBuffer *buf; /* Current SPU packet we're executing commands from */
+  guint16 cur_cmd_blk; /* Offset into the buf for the current cmd block */
+
+  SpuStateFlags flags;
+  
+  /* Top + Bottom field offsets in the buffer. 0 = not set */
+  guint16 pix_data[2]; 
+  GstBuffer *pix_buf; /* Current SPU packet the pix_data references */
+  
+  SpuRect disp_rect;
+  SpuRect hl_rect;
+
+  guint32 current_clut[16]; /* Colour lookup table from incoming events */
+
+  guint8 main_idx[4]; /* Indices for current main palette */
+  guint8 main_alpha[4]; /* Alpha values for main palette */
+
+  guint8 hl_idx[4]; /* Indices for current highlight palette */
+  guint8 hl_alpha[4]; /* Alpha values for highlight palette */
+
+  /* Pre-multiplied colour palette for the main palette */
+  SpuColour main_pal[4];
+  gboolean main_pal_dirty;
+
+  /* Line control info for rendering the highlight palette */
+  SpuLineCtrlI hl_ctrl_i;
+  gboolean hl_pal_dirty; /* Indicates that the HL palette info needs refreshing */
+
+  /* LineCtrlI Info from a Change Color & Contrast command */
+  SpuLineCtrlI *line_ctrl_i;
+  gint16 n_line_ctrl_i;
+  gboolean line_ctrl_i_pal_dirty; /* Indicates that the palettes for the line_ctrl_i
+                                   * need recalculating */
+
+  /* Rendering state vars below */
+  guint16 *comp_bufs[3]; /* Compositing buffers for U+V & A */
+  gint16 comp_last_x[2]; /* Maximum X values we rendered into the comp buffer (odd & even) */
+  gint16 *comp_last_x_ptr; /* Ptr to the current comp_last_x value to be updated by the render */
+  gint16 vid_width, vid_height;
+  gint16 Y_stride, UV_stride;
+  gint16 Y_height, UV_height;
+
+  gint fps_n, fps_d;
+
+  /* Current Y Position */
+  gint16 cur_Y;
+
+  /* Current offset in nibbles into the pix_data */
+  guint16 cur_offsets[2];
+  guint16 max_offset;
+
+  /* current ChgColCon Line Info */
+  SpuLineCtrlI *cur_chg_col;
+  SpuLineCtrlI *cur_chg_col_end;
+
+  /* Output position tracking */
+  guint8  *out_Y;
+  guint16 *out_U;
+  guint16 *out_V;
+  guint16 *out_A;
+};
+
+/* Structure used to store the queue of pending SPU packets. The start_ts is
+ * stored in running time... 
+ * Also used to carry in-band events so they remain serialised properly */
+struct SpuPacket {
+  GstClockTime event_ts;
+  GstBuffer *buf;
+  GstEvent *event;
+};
+
+struct GstDVDSpu
+{
+  GstElement element;
+
+  GstPad *videosinkpad;
+  GstPad *subpic_sinkpad;
+  GstPad *srcpad;
+
+  /* Mutex to protect state we access from different chain funcs */
+  GMutex *spu_lock;
+
+  GstSegment video_seg;
+  GstSegment subp_seg;
+
+  SpuState spu_state;
+
+  /* GQueue of SpuBuf structures */
+  GQueue *pending_spus;
+
+  /* Accumulator for collecting partial SPU buffers until they're complete */
+  GstBuffer *partial_spu;
+
+  /* Store either a reference or a copy of the last video frame for duplication
+   * during still-frame conditions */
+  GstBuffer *ref_frame;
+
+  /* Buffer to push after handling a DVD event, if any */
+  GstBuffer *pending_frame;
+};
+
+struct GstDVDSpuClass 
+{
+  GstElementClass parent_class;
+};
+
+GType gstdvdspu_get_type (void);
+void gstdvdspu_render_spu (GstDVDSpu *dvdspu, GstBuffer *buf);
+
+G_END_DECLS
+
+#endif /* __GSTDVDSPU_H__ */
diff --git a/gst/mpeg2sub/Makefile.am b/gst/mpeg2sub/Makefile.am
deleted file mode 100644
index ff2ad1a6..00000000
--- a/gst/mpeg2sub/Makefile.am
+++ /dev/null
@@ -1,12 +0,0 @@
-
-plugin_LTLIBRARIES = libgstmpeg2subt.la
-
-libgstmpeg2subt_la_SOURCES = gstmpeg2subt.c  
-
-libgstmpeg2subt_la_CFLAGS = $(GST_CFLAGS)
-libgstmpeg2subt_la_LIBADD =
-libgstmpeg2subt_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
-
-noinst_HEADERS = gstmpeg2subt.h 
-
-EXTRA_DIST = Notes.txt
diff --git a/gst/mpeg2sub/gstmpeg2subt.c b/gst/mpeg2sub/gstmpeg2subt.c
deleted file mode 100644
index c338853b..00000000
--- a/gst/mpeg2sub/gstmpeg2subt.c
+++ /dev/null
@@ -1,1049 +0,0 @@
-/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
- *
- * 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.
- */
-
-
-/*#define DEBUG_ENABLED */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include "gstmpeg2subt.h"
-#include <string.h>
-
-static void gst_mpeg2subt_class_init (GstMpeg2SubtClass * klass);
-static void gst_mpeg2subt_base_init (GstMpeg2SubtClass * klass);
-static void gst_mpeg2subt_init (GstMpeg2Subt * mpeg2subt);
-static void gst_mpeg2subt_loop (GstElement * element);
-
-static GstCaps *gst_mpeg2subt_getcaps_video (GstPad * pad);
-static GstPadLinkReturn gst_mpeg2subt_link_video (GstPad * pad,
-    const GstCaps * caps);
-static void gst_mpeg2subt_handle_video (GstMpeg2Subt * mpeg2subt,
-    GstData * _data);
-static gboolean gst_mpeg2subt_src_event (GstPad * pad, GstEvent * event);
-static void gst_mpeg2subt_handle_subtitle (GstMpeg2Subt * mpeg2subt,
-    GstData * _data);
-
-static void gst_mpeg2subt_merge_title (GstMpeg2Subt * mpeg2subt,
-    GstBuffer * buf);
-static void gst_mpeg2subt_handle_dvd_event (GstMpeg2Subt * mpeg2subt,
-    GstEvent * event, gboolean from_sub_pad);
-static void gst_mpeg2subt_finalize (GObject * gobject);
-static void gst_mpeg2subt_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec);
-static void gst_mpeg2subt_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec);
-static void gst_setup_palette (GstMpeg2Subt * mpeg2subt, guchar * indexes,
-    guchar * alpha);
-static void gst_update_still_frame (GstMpeg2Subt * mpeg2subt);
-
-/* elementfactory information */
-static const GstElementDetails mpeg2subt_details =
-GST_ELEMENT_DETAILS ("MPEG-2 subtitle decoder",
-    "Codec/Decoder/Video",
-    "Decodes and merges MPEG2 subtitles into a video frame",
-    "Wim Taymans <wim.taymans@chello.be>\n"
-    "Jan Schmidt <thaytan@mad.scientist.com>");
-
-static GstStaticPadTemplate video_template = GST_STATIC_PAD_TEMPLATE ("video",
-    GST_PAD_SINK,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("video/x-raw-yuv, " "format = (fourcc) { I420 }, " /* YV12 later */
-        "width = (int) [ 16, 4096 ], " "height = (int) [ 16, 4096 ]")
-    );
-
-static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
-    GST_PAD_SRC,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("video/x-raw-yuv, " "format = (fourcc) { I420 }, " /* YV12 later */
-        "width = (int) [ 16, 4096 ], " "height = (int) [ 16, 4096 ]")
-    );
-
-static GstStaticPadTemplate subtitle_template =
-GST_STATIC_PAD_TEMPLATE ("subtitle",
-    GST_PAD_SINK,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("video/x-dvd-subpicture")
-    );
-
-GST_DEBUG_CATEGORY_STATIC (mpeg2subt_debug);
-#define GST_CAT_DEFAULT (mpeg2subt_debug)
-
-/* GstMpeg2Subt signals and args */
-enum
-{
-  /* FILL ME */
-  LAST_SIGNAL
-};
-
-enum
-{
-  ARG_0,
-  ARG_SKIP
-      /* FILL ME */
-};
-
-enum
-{
-  SPU_FORCE_DISPLAY = 0x00,
-  SPU_SHOW = 0x01,
-  SPU_HIDE = 0x02,
-  SPU_SET_PALETTE = 0x03,
-  SPU_SET_ALPHA = 0x04,
-  SPU_SET_SIZE = 0x05,
-  SPU_SET_OFFSETS = 0x06,
-  SPU_WIPE = 0x07,
-  SPU_END = 0xff
-};
-
-static guint32 default_clut[16] = {
-  0xb48080, 0x248080, 0x628080, 0xd78080,
-  0x808080, 0x808080, 0x808080, 0x808080,
-  0x808080, 0x808080, 0x808080, 0x808080,
-  0x808080, 0x808080, 0x808080, 0x808080
-};
-
-typedef struct RLE_state
-{
-  gint id;
-  gint aligned;
-  gint offset[2];
-  gint clip_left;
-  gint clip_right;
-
-  guchar *target_Y;
-  guchar *target_U;
-  guchar *target_V;
-  guchar *target_A;
-
-  guchar next;
-}
-RLE_state;
-
-static GstElementClass *parent_class = NULL;
-
-/*static guint gst_mpeg2subt_signals[LAST_SIGNAL] = { 0 };*/
-
-GType
-gst_mpeg2subt_get_type (void)
-{
-  static GType mpeg2subt_type = 0;
-
-  if (!mpeg2subt_type) {
-    static const GTypeInfo mpeg2subt_info = {
-      sizeof (GstMpeg2SubtClass),
-      (GBaseInitFunc) gst_mpeg2subt_base_init,
-      NULL,
-      (GClassInitFunc) gst_mpeg2subt_class_init,
-      NULL,
-      NULL,
-      sizeof (GstMpeg2Subt),
-      0,
-      (GInstanceInitFunc) gst_mpeg2subt_init,
-    };
-
-    mpeg2subt_type =
-        g_type_register_static (GST_TYPE_ELEMENT, "GstMpeg2Subt",
-        &mpeg2subt_info, 0);
-
-    GST_DEBUG_CATEGORY_INIT (mpeg2subt_debug, "mpeg2subt", 0,
-        "MPEG2 subtitle overlay element");
-  }
-
-  return mpeg2subt_type;
-}
-
-static void
-gst_mpeg2subt_base_init (GstMpeg2SubtClass * klass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_template));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&video_template));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&subtitle_template));
-
-  gst_element_class_set_details (element_class, &mpeg2subt_details);
-}
-
-static void
-gst_mpeg2subt_class_init (GstMpeg2SubtClass * klass)
-{
-  GObjectClass *gobject_class;
-  GstElementClass *gstelement_class;
-
-  gobject_class = (GObjectClass *) klass;
-  gstelement_class = (GstElementClass *) klass;
-
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SKIP, g_param_spec_int ("skip", "skip", "skip", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));      /* CHECKME */
-
-  parent_class = g_type_class_peek_parent (klass);
-
-  gobject_class->set_property = gst_mpeg2subt_set_property;
-  gobject_class->get_property = gst_mpeg2subt_get_property;
-  gobject_class->finalize = gst_mpeg2subt_finalize;
-}
-
-static void
-gst_mpeg2subt_init (GstMpeg2Subt * mpeg2subt)
-{
-  mpeg2subt->videopad =
-      gst_pad_new_from_static_template (&video_template, "video");
-  gst_element_add_pad (GST_ELEMENT (mpeg2subt), mpeg2subt->videopad);
-  gst_pad_set_link_function (mpeg2subt->videopad,
-      GST_DEBUG_FUNCPTR (gst_mpeg2subt_link_video));
-  gst_pad_set_getcaps_function (mpeg2subt->videopad,
-      GST_DEBUG_FUNCPTR (gst_mpeg2subt_getcaps_video));
-
-  mpeg2subt->subtitlepad =
-      gst_pad_new_from_static_template (&subtitle_template, "subtitle");
-  gst_element_add_pad (GST_ELEMENT (mpeg2subt), mpeg2subt->subtitlepad);
-
-  mpeg2subt->srcpad = gst_pad_new_from_static_template (&src_template, "src");
-  gst_element_add_pad (GST_ELEMENT (mpeg2subt), mpeg2subt->srcpad);
-  gst_pad_set_getcaps_function (mpeg2subt->srcpad,
-      GST_DEBUG_FUNCPTR (gst_mpeg2subt_getcaps_video));
-  gst_pad_set_link_function (mpeg2subt->srcpad,
-      GST_DEBUG_FUNCPTR (gst_mpeg2subt_link_video));
-  gst_pad_set_event_function (mpeg2subt->srcpad,
-      GST_DEBUG_FUNCPTR (gst_mpeg2subt_src_event));
-
-  gst_element_set_loop_function (GST_ELEMENT (mpeg2subt), gst_mpeg2subt_loop);
-  GST_OBJECT_FLAG_SET (GST_ELEMENT (mpeg2subt), GST_ELEMENT_EVENT_AWARE);
-
-  mpeg2subt->partialbuf = NULL;
-  mpeg2subt->hold_frame = NULL;
-  mpeg2subt->still_frame = NULL;
-  mpeg2subt->have_title = FALSE;
-  mpeg2subt->start_display_time = GST_CLOCK_TIME_NONE;
-  mpeg2subt->end_display_time = GST_CLOCK_TIME_NONE;
-  mpeg2subt->forced_display = FALSE;
-
-  memcpy (mpeg2subt->current_clut, default_clut, sizeof (guint32) * 16);
-  gst_setup_palette (mpeg2subt, mpeg2subt->menu_index, mpeg2subt->menu_alpha);
-  gst_setup_palette (mpeg2subt, mpeg2subt->subtitle_index,
-      mpeg2subt->subtitle_alpha);
-
-  memset (mpeg2subt->out_buffers, 0, sizeof (mpeg2subt->out_buffers));
-  mpeg2subt->pending_video_buffer = NULL;
-  mpeg2subt->next_video_time = GST_CLOCK_TIME_NONE;
-  mpeg2subt->pending_subtitle_buffer = NULL;
-  mpeg2subt->next_subtitle_time = GST_CLOCK_TIME_NONE;
-}
-
-static void
-gst_mpeg2subt_finalize (GObject * gobject)
-{
-  GstMpeg2Subt *mpeg2subt = GST_MPEG2SUBT (gobject);
-  gint i;
-
-  for (i = 0; i < 3; i++) {
-    if (mpeg2subt->out_buffers[i])
-      g_free (mpeg2subt->out_buffers[i]);
-  }
-
-  if (mpeg2subt->partialbuf)
-    gst_buffer_unref (mpeg2subt->partialbuf);
-}
-
-static GstCaps *
-gst_mpeg2subt_getcaps_video (GstPad * pad)
-{
-  GstMpeg2Subt *mpeg2subt = GST_MPEG2SUBT (gst_pad_get_parent (pad));
-  GstPad *otherpad;
-
-  otherpad =
-      (pad == mpeg2subt->srcpad) ? mpeg2subt->videopad : mpeg2subt->srcpad;
-
-  return gst_pad_get_allowed_caps (otherpad);
-}
-
-static GstPadLinkReturn
-gst_mpeg2subt_link_video (GstPad * pad, const GstCaps * caps)
-{
-  GstMpeg2Subt *mpeg2subt = GST_MPEG2SUBT (gst_pad_get_parent (pad));
-  GstPad *otherpad;
-  GstPadLinkReturn ret;
-  GstStructure *structure;
-  gint width, height;
-  gint i;
-
-  otherpad =
-      (pad == mpeg2subt->srcpad) ? mpeg2subt->videopad : mpeg2subt->srcpad;
-
-  ret = gst_pad_try_set_caps (otherpad, caps);
-  if (GST_PAD_LINK_FAILED (ret)) {
-    return ret;
-  }
-
-  structure = gst_caps_get_structure (caps, 0);
-
-  if (!gst_structure_get_int (structure, "width", &width) ||
-      !gst_structure_get_int (structure, "height", &height)) {
-    return GST_PAD_LINK_REFUSED;
-  }
-
-  mpeg2subt->in_width = width;
-  mpeg2subt->in_height = height;
-
-  /* Allocate compositing buffers */
-  for (i = 0; i < 3; i++) {
-    if (mpeg2subt->out_buffers[i])
-      g_free (mpeg2subt->out_buffers[i]);
-    mpeg2subt->out_buffers[i] = g_malloc (sizeof (guint16) * width);
-  }
-
-  return GST_PAD_LINK_OK;
-}
-
-static void
-gst_mpeg2subt_handle_video (GstMpeg2Subt * mpeg2subt, GstData * _data)
-{
-  if (GST_IS_BUFFER (_data)) {
-    GstBuffer *buf = GST_BUFFER (_data);
-    guchar *data;
-    glong size;
-
-    data = GST_BUFFER_DATA (buf);
-    size = GST_BUFFER_SIZE (buf);
-
-    if (mpeg2subt->still_frame) {
-      gst_buffer_unref (mpeg2subt->still_frame);
-      mpeg2subt->still_frame = NULL;
-    }
-
-    if (!mpeg2subt->hold_frame) {
-      mpeg2subt->hold_frame = buf;
-    } else {
-      GstBuffer *out_buf;
-
-      out_buf = mpeg2subt->hold_frame;
-      mpeg2subt->hold_frame = buf;
-
-      if (mpeg2subt->have_title) {
-        if ((mpeg2subt->forced_display && (mpeg2subt->current_button != 0))
-            ||
-            ((mpeg2subt->start_display_time <= GST_BUFFER_TIMESTAMP (out_buf))
-                && (mpeg2subt->end_display_time >=
-                    GST_BUFFER_TIMESTAMP (out_buf)))) {
-          out_buf = gst_buffer_copy_on_write (out_buf);
-          gst_mpeg2subt_merge_title (mpeg2subt, out_buf);
-        }
-      }
-
-      gst_pad_push (mpeg2subt->srcpad, GST_DATA (out_buf));
-    }
-  } else if (GST_IS_EVENT (_data)) {
-    switch (GST_EVENT_TYPE (GST_EVENT (_data))) {
-      case GST_EVENT_ANY:
-        gst_mpeg2subt_handle_dvd_event (mpeg2subt, GST_EVENT (_data), FALSE);
-        gst_data_unref (_data);
-        break;
-      case GST_EVENT_DISCONTINUOUS:
-        /* Turn off forced highlight display */
-        mpeg2subt->forced_display = 0;
-        if (mpeg2subt->still_frame) {
-          gst_buffer_unref (mpeg2subt->still_frame);
-          mpeg2subt->still_frame = NULL;
-        }
-        if (mpeg2subt->hold_frame) {
-          gst_buffer_unref (mpeg2subt->hold_frame);
-          mpeg2subt->hold_frame = NULL;
-        }
-        gst_pad_push (mpeg2subt->srcpad, _data);
-        break;
-      default:
-        gst_pad_push (mpeg2subt->srcpad, _data);
-        break;
-    }
-  } else
-    gst_data_unref (_data);
-}
-
-static gboolean
-gst_mpeg2subt_src_event (GstPad * pad, GstEvent * event)
-{
-  GstMpeg2Subt *mpeg2subt = GST_MPEG2SUBT (gst_pad_get_parent (pad));
-
-  return gst_pad_send_event (GST_PAD_PEER (mpeg2subt->videopad), event);
-}
-
-static void
-gst_mpeg2subt_parse_header (GstMpeg2Subt * mpeg2subt)
-{
-#define PARSE_BYTES_NEEDED(x) if ((buf+(x)) >= end) \
-  { GST_WARNING("Subtitle stream broken parsing %d", *buf); \
-    broken = TRUE; break; }
-
-  guchar *buf;
-  guchar *start = GST_BUFFER_DATA (mpeg2subt->partialbuf);
-  guchar *end;
-  gboolean broken = FALSE;
-  gboolean last_seq = FALSE;
-  guchar *next_seq = NULL;
-  guint event_time;
-
-  mpeg2subt->forced_display = FALSE;
-  g_return_if_fail (mpeg2subt->packet_size >= 4);
-
-  buf = start + mpeg2subt->data_size;
-  end = buf + mpeg2subt->packet_size;
-  event_time = GUINT16_FROM_BE (*(guint16 *) (buf));
-  next_seq = start + GUINT16_FROM_BE (*(guint16 *) (buf + 2));
-  /* If the next control sequence is at the current offset, this is 
-   * the last one */
-  last_seq = (next_seq == buf);
-  buf += 4;
-
-  while ((buf < end) && (!broken)) {
-    switch (*buf) {
-      case SPU_FORCE_DISPLAY:  /* Forced display menu subtitle */
-        mpeg2subt->forced_display = TRUE;
-        buf++;
-        break;
-      case SPU_SHOW:           /* Show the subtitle in this packet */
-        mpeg2subt->start_display_time =
-            GST_BUFFER_TIMESTAMP (mpeg2subt->partialbuf) +
-            ((GST_SECOND * event_time) / 90);
-        GST_DEBUG ("Subtitle starts at %" G_GUINT64_FORMAT,
-            mpeg2subt->end_display_time);
-        buf++;
-        break;
-      case SPU_HIDE:           /* 02 ff (ff) is the end of the packet, hide the  */
-        mpeg2subt->end_display_time =
-            GST_BUFFER_TIMESTAMP (mpeg2subt->partialbuf) +
-            ((GST_SECOND * event_time) / 90);
-        GST_DEBUG ("Subtitle ends at %" G_GUINT64_FORMAT,
-            mpeg2subt->end_display_time);
-        buf++;
-        break;
-      case SPU_SET_PALETTE:    /* palette */
-        PARSE_BYTES_NEEDED (3);
-
-        mpeg2subt->subtitle_index[3] = buf[1] >> 4;
-        mpeg2subt->subtitle_index[2] = buf[1] & 0xf;
-        mpeg2subt->subtitle_index[1] = buf[2] >> 4;
-        mpeg2subt->subtitle_index[0] = buf[2] & 0xf;
-        buf += 3;
-        break;
-      case SPU_SET_ALPHA:      /* transparency palette */
-        PARSE_BYTES_NEEDED (3);
-
-        mpeg2subt->subtitle_alpha[3] = buf[1] >> 4;
-        mpeg2subt->subtitle_alpha[2] = buf[1] & 0xf;
-        mpeg2subt->subtitle_alpha[1] = buf[2] >> 4;
-        mpeg2subt->subtitle_alpha[0] = buf[2] & 0xf;
-        buf += 3;
-        break;
-      case SPU_SET_SIZE:       /* image coordinates */
-        PARSE_BYTES_NEEDED (7);
-
-        mpeg2subt->left =
-            CLAMP ((((unsigned int) buf[1]) << 4) | (buf[2] >> 4), 0,
-            (mpeg2subt->in_width - 1));
-        mpeg2subt->top =
-            CLAMP ((((unsigned int) buf[4]) << 4) | (buf[5] >> 4), 0,
-            (mpeg2subt->in_height - 1));
-        mpeg2subt->right =
-            CLAMP ((((buf[2] & 0x0f) << 8) | buf[3]), 0,
-            (mpeg2subt->in_width - 1));
-        mpeg2subt->bottom =
-            CLAMP ((((buf[5] & 0x0f) << 8) | buf[6]), 0,
-            (mpeg2subt->in_height - 1));
-
-        GST_DEBUG ("left %d, top %d, right %d, bottom %d", mpeg2subt->left,
-            mpeg2subt->top, mpeg2subt->right, mpeg2subt->bottom);
-        buf += 7;
-        break;
-      case SPU_SET_OFFSETS:    /* image 1 / image 2 offsets */
-        PARSE_BYTES_NEEDED (5);
-        mpeg2subt->offset[0] = (((unsigned int) buf[1]) << 8) | buf[2];
-        mpeg2subt->offset[1] = (((unsigned int) buf[3]) << 8) | buf[4];
-        GST_DEBUG ("Offset1 %d, Offset2 %d", mpeg2subt->offset[0],
-            mpeg2subt->offset[1]);
-        buf += 5;
-        break;
-      case SPU_WIPE:
-      {
-        guint length;
-
-        GST_WARNING ("SPU_WIPE not yet implemented");
-        PARSE_BYTES_NEEDED (3);
-
-        length = (buf[1] << 8) | (buf[2]);
-        buf += 1 + length;
-      }
-        break;
-      case SPU_END:
-        buf = (last_seq) ? end : next_seq;
-
-        /* Start a new control sequence */
-        if (buf + 4 < end) {
-          event_time = GUINT16_FROM_BE (*(guint16 *) (buf));
-          next_seq = start + GUINT16_FROM_BE (*(guint16 *) (buf + 2));
-          last_seq = (next_seq == buf);
-        }
-        buf += 4;
-        break;
-      default:
-        GST_ERROR
-            ("Invalid sequence in subtitle packet header (%.2x). Skipping",
-            *buf);
-        broken = TRUE;
-        break;
-    }
-  }
-
-  if (!mpeg2subt->forced_display)
-    gst_setup_palette (mpeg2subt, mpeg2subt->subtitle_index,
-        mpeg2subt->subtitle_alpha);
-}
-
-inline int
-gst_get_nibble (guchar * buffer, RLE_state * state)
-{
-  if (state->aligned) {
-    state->next = buffer[state->offset[state->id]++];
-    state->aligned = 0;
-    return state->next >> 4;
-  } else {
-    state->aligned = 1;
-    return state->next & 0xf;
-  }
-}
-
-/* Premultiply the current lookup table into the palette_cache */
-static void
-gst_setup_palette (GstMpeg2Subt * mpeg2subt, guchar * indexes, guchar * alpha)
-{
-  gint i;
-  YUVA_val *target = mpeg2subt->palette_cache;
-
-  for (i = 0; i < 4; i++, target++) {
-    guint32 col = mpeg2subt->current_clut[indexes[i]];
-
-    target->Y = (guint16) ((col >> 16) & 0xff) * alpha[i];
-    target->U = (guint16) ((col >> 8) & 0xff) * alpha[i];
-    target->V = (guint16) (col & 0xff) * alpha[i];
-    target->A = alpha[i];
-  }
-}
-
-inline guint
-gst_get_rle_code (guchar * buffer, RLE_state * state)
-{
-  gint code;
-
-  code = gst_get_nibble (buffer, state);
-  if (code < 0x4) {             /* 4 .. f */
-    code = (code << 4) | gst_get_nibble (buffer, state);
-    if (code < 0x10) {          /* 1x .. 3x */
-      code = (code << 4) | gst_get_nibble (buffer, state);
-      if (code < 0x40) {        /* 04x .. 0fx */
-        code = (code << 4) | gst_get_nibble (buffer, state);
-      }
-    }
-  }
-  return code;
-}
-
-/* 
- * This function steps over each run-length segment, drawing 
- * into the YUVA buffers as it goes. UV are composited and then output
- * at half width/height
- */
-static void
-gst_draw_rle_line (GstMpeg2Subt * mpeg2subt, guchar * buffer, RLE_state * state)
-{
-  gint length, colourid;
-  gint right = mpeg2subt->right + 1;
-  YUVA_val *colour_entry;
-  guint code;
-  gint x;
-  gboolean in_clip = FALSE;
-  guchar *target_Y;
-  guint16 *target_U;
-  guint16 *target_V;
-  guint16 *target_A;
-
-  target_Y = state->target_Y;
-  target_U = mpeg2subt->out_buffers[0];
-  target_V = mpeg2subt->out_buffers[1];
-  target_A = mpeg2subt->out_buffers[2];
-  x = mpeg2subt->left;
-  while (x < right) {
-    code = gst_get_rle_code (buffer, state);
-    length = code >> 2;
-    colourid = code & 3;
-    colour_entry = mpeg2subt->palette_cache + colourid;
-
-    /* Length = 0 implies fill to the end of the line */
-    if (length == 0)
-      length = right - x;
-    else {
-      /* Restrict the colour run to the end of the line */
-      length = length < (right - x) ? length : (right - x);
-    }
-
-    /* Check if this run of colour crosses into the clip region */
-    in_clip = (((x + length) >= state->clip_left) && (x <= state->clip_right));
-
-    /* Draw YA onto the frame via target_Y, UVA into the composite buffers */
-    if ((in_clip) && (colour_entry->A)) {
-      guint16 inv_alpha = 0xf - colour_entry->A;
-      gint i;
-
-      for (i = 0; i < length; i++) {
-        *target_Y = ((inv_alpha * (*target_Y)) + colour_entry->Y) / 0xf;
-        *target_U += colour_entry->U;
-        *target_V += colour_entry->V;
-        *target_A += colour_entry->A;
-        target_Y++;
-        target_U++;
-        target_V++;
-        target_A++;
-      }
-    } else {
-      target_Y += length;
-      target_U += length;
-      target_V += length;
-      target_A += length;
-    }
-    x += length;
-  }
-}
-
-inline void
-gst_merge_uv_data (GstMpeg2Subt * mpeg2subt, guchar * buffer, RLE_state * state)
-{
-  gint x;
-  guchar *target_V;
-  guchar *target_U;
-  gint width = mpeg2subt->right - mpeg2subt->left + 1;
-
-  guint16 *comp_U;
-  guint16 *comp_V;
-  guint16 *comp_A;
-
-  /* The compositing buffers should contain the results of accumulating 2 scanlines of 
-   * U, V (premultiplied) and A data. Merge them back into their output buffers at 
-   * half width/height.
-   */
-  target_U = state->target_U;
-  target_V = state->target_V;
-  comp_U = mpeg2subt->out_buffers[0];
-  comp_V = mpeg2subt->out_buffers[1];
-  comp_A = mpeg2subt->out_buffers[2];
-
-  for (x = 0; x < width; x += 2) {
-    guint16 temp1, temp2;
-
-    /* Average out the alpha accumulated to compute transparency */
-    guint16 alpha = (comp_A[0] + comp_A[1]);
-
-    if (alpha > 0) {
-      temp1 = (*target_U) * ((4 * 0xf) - alpha) + comp_U[0] + comp_U[1];
-      temp2 = (*target_V) * ((4 * 0xf) - alpha) + comp_V[0] + comp_V[1];
-      *target_U = temp1 / (4 * 0xf);
-      *target_V = temp2 / (4 * 0xf);
-    };
-    comp_U += 2;
-    comp_V += 2;
-    comp_A += 2;
-    target_U++;
-    target_V++;
-  }
-}
-
-/*
- * Decode the RLE subtitle image and blend with the current
- * frame buffer.
- */
-static void
-gst_mpeg2subt_merge_title (GstMpeg2Subt * mpeg2subt, GstBuffer * buf)
-{
-  gint y;
-  gint width = mpeg2subt->right - mpeg2subt->left + 1;
-  gint Y_stride;
-  gint UV_stride;
-
-  guchar *buffer = GST_BUFFER_DATA (mpeg2subt->partialbuf);
-  gint last_y;
-  gint first_y;
-  RLE_state state;
-
-  /* Set up the initial offsets, remembering the half-res size for UV in I420 packing
-   * see http://www.fourcc.org for details
-   */
-  Y_stride = mpeg2subt->in_width;
-  UV_stride = (mpeg2subt->in_width + 1) / 2;
-
-  GST_DEBUG ("Merging subtitle on frame at time %" G_GUINT64_FORMAT
-      " using %s colour table", GST_BUFFER_TIMESTAMP (buf),
-      mpeg2subt->forced_display ? "menu" : "subtitle");
-
-  state.id = 0;
-  state.aligned = 1;
-  state.offset[0] = mpeg2subt->offset[0];
-  state.offset[1] = mpeg2subt->offset[1];
-
-  /* skip over lines until we hit the clip region */
-  if (mpeg2subt->forced_display) {
-    state.clip_right = mpeg2subt->clip_right;
-    state.clip_left = mpeg2subt->clip_left;
-    last_y = mpeg2subt->clip_bottom;
-    first_y = mpeg2subt->clip_top;
-  } else {
-    state.clip_right = mpeg2subt->right;
-    state.clip_left = mpeg2subt->left;
-    last_y = mpeg2subt->bottom;
-    first_y = mpeg2subt->top;
-  }
-
-  for (y = mpeg2subt->top; y < first_y; y++) {
-    /* Skip a line of RLE data */
-    gint length;
-    guint code;
-    gint x = 0;
-
-    while (x < width) {
-      code = gst_get_rle_code (buffer, &state);
-      length = code >> 2;
-
-      /* Length = 0 implies fill to the end of the line so we're done */
-      if (length == 0)
-        break;
-
-      x += length;
-    }
-    if (!state.aligned)
-      gst_get_nibble (buffer, &state);
-    state.id = !state.id;
-  }
-
-  state.target_Y = GST_BUFFER_DATA (buf) + mpeg2subt->left + (y * Y_stride);
-  state.target_V = GST_BUFFER_DATA (buf) + (Y_stride * mpeg2subt->in_height)
-      + ((mpeg2subt->left) / 2) + ((y / 2) * UV_stride);
-  state.target_U =
-      state.target_V + UV_stride * ((mpeg2subt->in_height + 1) / 2);
-
-  memset (mpeg2subt->out_buffers[0], 0, sizeof (guint16) * Y_stride);
-  memset (mpeg2subt->out_buffers[1], 0, sizeof (guint16) * Y_stride);
-  memset (mpeg2subt->out_buffers[2], 0, sizeof (guint16) * Y_stride);
-
-  /* Now draw scanlines until we hit last_y or end of RLE data */
-  for (; ((state.offset[1] < mpeg2subt->data_size + 2) && (y <= last_y)); y++) {
-    gst_draw_rle_line (mpeg2subt, buffer, &state);
-    if (state.id) {
-      gst_merge_uv_data (mpeg2subt, buffer, &state);
-
-      /* Clear the compositing buffers */
-      memset (mpeg2subt->out_buffers[0], 0, sizeof (guint16) * Y_stride);
-      memset (mpeg2subt->out_buffers[1], 0, sizeof (guint16) * Y_stride);
-      memset (mpeg2subt->out_buffers[2], 0, sizeof (guint16) * Y_stride);
-
-      state.target_U += UV_stride;
-      state.target_V += UV_stride;
-    }
-    state.target_Y += Y_stride;
-
-    /* Realign the RLE state for the next line */
-    if (!state.aligned)
-      gst_get_nibble (buffer, &state);
-    state.id = !state.id;
-  }
-}
-
-static void
-gst_update_still_frame (GstMpeg2Subt * mpeg2subt)
-{
-  GstBuffer *out_buf;
-
-  if ((mpeg2subt->still_frame) &&
-      (mpeg2subt->have_title) &&
-      ((mpeg2subt->forced_display && (mpeg2subt->current_button != 0)))) {
-    gst_buffer_ref (mpeg2subt->still_frame);
-    out_buf = gst_buffer_copy_on_write (mpeg2subt->still_frame);
-    gst_mpeg2subt_merge_title (mpeg2subt, out_buf);
-    gst_pad_push (mpeg2subt->srcpad, GST_DATA (out_buf));
-  }
-}
-
-static void
-gst_mpeg2subt_handle_subtitle (GstMpeg2Subt * mpeg2subt, GstData * _data)
-{
-  g_return_if_fail (_data != NULL);
-
-  if (GST_IS_BUFFER (_data)) {
-    GstBuffer *buf = GST_BUFFER (_data);
-    guchar *data;
-    glong size = 0;
-
-    if (mpeg2subt->have_title) {
-      gst_buffer_unref (mpeg2subt->partialbuf);
-      mpeg2subt->partialbuf = NULL;
-      mpeg2subt->have_title = FALSE;
-    }
-
-    GST_DEBUG ("Got subtitle buffer, pts %" G_GUINT64_FORMAT,
-        GST_BUFFER_TIMESTAMP (buf));
-
-    /* deal with partial frame from previous buffer */
-    if (mpeg2subt->partialbuf) {
-      GstBuffer *merge;
-
-      merge = gst_buffer_merge (mpeg2subt->partialbuf, buf);
-      gst_buffer_unref (mpeg2subt->partialbuf);
-      gst_buffer_unref (buf);
-      mpeg2subt->partialbuf = merge;
-    } else {
-      mpeg2subt->partialbuf = buf;
-    }
-
-    data = GST_BUFFER_DATA (mpeg2subt->partialbuf);
-    size = GST_BUFFER_SIZE (mpeg2subt->partialbuf);
-
-    if (size > 4) {
-      mpeg2subt->packet_size = GST_READ_UINT16_BE (data);
-
-      if (mpeg2subt->packet_size == size) {
-        GST_LOG ("Subtitle packet size %d, current size %ld",
-            mpeg2subt->packet_size, size);
-
-        mpeg2subt->data_size = GST_READ_UINT16_BE (data + 2);
-        mpeg2subt->have_title = TRUE;
-
-        gst_mpeg2subt_parse_header (mpeg2subt);
-      }
-    }
-  } else if (GST_IS_EVENT (_data)) {
-    switch (GST_EVENT_TYPE (GST_EVENT (_data))) {
-      case GST_EVENT_ANY:
-        GST_LOG ("DVD event on subtitle pad with timestamp %llu",
-            GST_EVENT_TIMESTAMP (GST_EVENT (_data)));
-        gst_mpeg2subt_handle_dvd_event (mpeg2subt, GST_EVENT (_data), TRUE);
-        break;
-      case GST_EVENT_EMPTY:
-        if (GST_CLOCK_TIME_IS_VALID (mpeg2subt->next_video_time) &&
-            (mpeg2subt->next_video_time > 0)) {
-          mpeg2subt->next_subtitle_time = mpeg2subt->next_video_time + 1;
-          GST_LOG ("Forwarding subtitle time to %llu",
-              mpeg2subt->next_subtitle_time);
-        }
-        gst_update_still_frame (mpeg2subt);
-        break;
-      default:
-        GST_LOG ("Got event of type %d on subtitle pad",
-            GST_EVENT_TYPE (GST_EVENT (_data)));
-        break;
-    }
-    gst_data_unref (_data);
-  } else
-    gst_data_unref (_data);
-}
-
-static void
-gst_mpeg2subt_handle_dvd_event (GstMpeg2Subt * mpeg2subt, GstEvent * event,
-    gboolean from_sub_pad)
-{
-  GstStructure *structure;
-  const gchar *event_type;
-
-  structure = event->event_data.structure.structure;
-
-  event_type = gst_structure_get_string (structure, "event");
-  g_return_if_fail (event_type != NULL);
-
-  if (from_sub_pad && !strcmp (event_type, "dvd-spu-highlight")) {
-    gint button;
-    gint palette, sx, sy, ex, ey;
-    gint i;
-
-    /* Details for the highlight region to display */
-    if (!gst_structure_get_int (structure, "button", &button) ||
-        !gst_structure_get_int (structure, "palette", &palette) ||
-        !gst_structure_get_int (structure, "sx", &sx) ||
-        !gst_structure_get_int (structure, "sy", &sy) ||
-        !gst_structure_get_int (structure, "ex", &ex) ||
-        !gst_structure_get_int (structure, "ey", &ey)) {
-      GST_ERROR ("Invalid dvd-spu-highlight event received");
-      return;
-    }
-    mpeg2subt->current_button = button;
-    mpeg2subt->clip_left = sx;
-    mpeg2subt->clip_top = sy;
-    mpeg2subt->clip_right = ex;
-    mpeg2subt->clip_bottom = ey;
-    for (i = 0; i < 4; i++) {
-      mpeg2subt->menu_alpha[i] = ((guint32) (palette) >> (i * 4)) & 0x0f;
-      mpeg2subt->menu_index[i] = ((guint32) (palette) >> (16 + (i * 4))) & 0x0f;
-    }
-
-    GST_DEBUG ("New button activated clip=(%d,%d) to (%d,%d) palette 0x%x", sx,
-        sy, ex, ey, palette);
-    gst_setup_palette (mpeg2subt, mpeg2subt->menu_index, mpeg2subt->menu_alpha);
-
-    gst_update_still_frame (mpeg2subt);
-  } else if (from_sub_pad && !strcmp (event_type, "dvd-spu-clut-change")) {
-    /* Take a copy of the colour table */
-    guchar name[16];
-    int i;
-    gint value;
-
-    GST_LOG ("New colour table recieved");
-    for (i = 0; i < 16; i++) {
-      sprintf (name, "clut%02d", i);
-      if (!gst_structure_get_int (structure, name, &value)) {
-        GST_ERROR ("dvd-spu-clut-change event did not contain %s field", name);
-        break;
-      }
-      mpeg2subt->current_clut[i] = (guint32) (value);
-    }
-
-    if (mpeg2subt->forced_display)
-      gst_setup_palette (mpeg2subt, mpeg2subt->menu_index,
-          mpeg2subt->menu_alpha);
-    else
-      gst_setup_palette (mpeg2subt, mpeg2subt->subtitle_index,
-          mpeg2subt->subtitle_alpha);
-
-    gst_update_still_frame (mpeg2subt);
-  } else if ((from_sub_pad && !strcmp (event_type, "dvd-spu-stream-change"))
-      || (from_sub_pad && !strcmp (event_type, "dvd-spu-reset-highlight"))) {
-    /* Turn off forced highlight display */
-    mpeg2subt->current_button = 0;
-    mpeg2subt->clip_left = mpeg2subt->left;
-    mpeg2subt->clip_top = mpeg2subt->top;
-    mpeg2subt->clip_right = mpeg2subt->right;
-    mpeg2subt->clip_bottom = mpeg2subt->bottom;
-    GST_LOG ("Clearing button state");
-    gst_update_still_frame (mpeg2subt);
-  } else if (!from_sub_pad && !strcmp (event_type, "dvd-spu-still-frame")) {
-    /* Handle a still frame */
-    GST_LOG ("Received still frame notification");
-    if (mpeg2subt->still_frame)
-      gst_buffer_unref (mpeg2subt->still_frame);
-    mpeg2subt->still_frame = mpeg2subt->hold_frame;
-    mpeg2subt->hold_frame = NULL;
-    gst_update_still_frame (mpeg2subt);
-  } else {
-    /* Ignore all other unknown events */
-    GST_LOG ("Ignoring DVD event %s from %s pad", event_type,
-        from_sub_pad ? "sub" : "video");
-  }
-}
-
-static void
-gst_mpeg2subt_loop (GstElement * element)
-{
-  GstMpeg2Subt *mpeg2subt = GST_MPEG2SUBT (element);
-  GstData *data;
-  GstClockTime timestamp = 0;
-
-  /* Process any pending video buffer */
-  if (mpeg2subt->pending_video_buffer) {
-    gst_mpeg2subt_handle_video (mpeg2subt, mpeg2subt->pending_video_buffer);
-    mpeg2subt->pending_video_buffer = NULL;
-  }
-  data = mpeg2subt->pending_video_buffer = gst_pad_pull (mpeg2subt->videopad);
-  if (!data)
-    return;
-
-  if (GST_IS_BUFFER (data)) {
-    timestamp = GST_BUFFER_TIMESTAMP (GST_BUFFER (data));
-  } else if (GST_IS_EVENT (data)) {
-    timestamp = GST_EVENT_TIMESTAMP (GST_EVENT (data));
-  } else {
-    GST_WARNING ("Got GstData of unknown type %d", GST_DATA_TYPE (data));
-  }
-  if (timestamp && GST_CLOCK_TIME_IS_VALID (timestamp) && (timestamp > 0)) {
-    mpeg2subt->next_video_time = timestamp;
-    GST_LOG ("next_video_time = %llu, next_subtitle_time = %llu",
-        mpeg2subt->next_video_time, mpeg2subt->next_subtitle_time);
-  }
-
-  /* Process subtitle buffers until we get one beyond 'next_video_time' */
-  if (mpeg2subt->pending_subtitle_buffer) {
-    gst_mpeg2subt_handle_subtitle (mpeg2subt,
-        mpeg2subt->pending_subtitle_buffer);
-    mpeg2subt->pending_subtitle_buffer = NULL;
-  }
-  data = mpeg2subt->pending_subtitle_buffer =
-      gst_pad_pull (mpeg2subt->subtitlepad);
-  if (!data) {
-    return;
-  }
-
-  if (GST_IS_BUFFER (data)) {
-    timestamp = GST_BUFFER_TIMESTAMP (GST_BUFFER (data));
-  } else if (GST_IS_EVENT (data)) {
-    timestamp = GST_EVENT_TIMESTAMP (GST_EVENT (data));
-  } else {
-    GST_WARNING ("Got GstData of unknown type %d", GST_DATA_TYPE (data));
-  }
-  if (GST_CLOCK_TIME_IS_VALID (timestamp) && (timestamp > 0)) {
-    mpeg2subt->next_subtitle_time = timestamp;
-    GST_LOG ("next_subtitle_time = %llu, next_video_time = %llu",
-        mpeg2subt->next_subtitle_time, mpeg2subt->next_video_time);
-  }
-}
-
-static void
-gst_mpeg2subt_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec)
-{
-  GstMpeg2Subt *src;
-
-  g_return_if_fail (GST_IS_MPEG2SUBT (object));
-  src = GST_MPEG2SUBT (object);
-
-  switch (prop_id) {
-    default:
-      break;
-  }
-}
-
-static void
-gst_mpeg2subt_get_property (GObject * object, guint prop_id, GValue * value,
-    GParamSpec * pspec)
-{
-  GstMpeg2Subt *src;
-
-  g_return_if_fail (GST_IS_MPEG2SUBT (object));
-  src = GST_MPEG2SUBT (object);
-
-  switch (prop_id) {
-    default:
-      break;
-  }
-}
-
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
-  return gst_element_register (plugin, "mpeg2subt",
-      GST_RANK_NONE, GST_TYPE_MPEG2SUBT);
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
-    GST_VERSION_MINOR,
-    "mpeg2sub",
-    "MPEG-2 video subtitle parser",
-    plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
diff --git a/gst/mpeg2sub/gstmpeg2subt.h b/gst/mpeg2sub/gstmpeg2subt.h
deleted file mode 100644
index a257f55d..00000000
--- a/gst/mpeg2sub/gstmpeg2subt.h
+++ /dev/null
@@ -1,114 +0,0 @@
-/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
- *
- * 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_MPEG2SUBT_H__
-#define __GST_MPEG2SUBT_H__
-
-
-#include <gst/gst.h>
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
-
-#define GST_TYPE_MPEG2SUBT \
-  (gst_mpeg2subt_get_type())
-#define GST_MPEG2SUBT(obj) \
-  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MPEG2SUBT,GstMpeg2Subt))
-#define GST_MPEG2SUBT_CLASS(klass) \
-  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MPEG2SUBT,GstMpeg2SubtClass))
-#define GST_IS_MPEG2SUBT(obj) \
-  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MPEG2SUBT))
-#define GST_IS_MPEG2SUBT_CLASS(klass) \
-  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MPEG2SUBT))
-
-typedef struct _GstMpeg2Subt GstMpeg2Subt;
-typedef struct _GstMpeg2SubtClass GstMpeg2SubtClass;
-
-/* Hold premultimplied colour values */
-typedef struct YUVA_val {
-  guint16 Y;
-  guint16 U;
-  guint16 V;
-  guint16 A;
-} YUVA_val;
-
-struct _GstMpeg2Subt {
-  GstElement element;
-
-  GstPad *videopad,*subtitlepad,*srcpad;
-
-  GstBuffer *partialbuf;        /* Collect together subtitle buffers until we have a full control sequence */
-  GstBuffer *hold_frame;        /* Hold back one frame of video */
-  GstBuffer *still_frame;
-
-  guint16 packet_size;
-  guint16 data_size;
-
-  gint offset[2];
-
-  YUVA_val palette_cache[4];
-
-  /* 
-   * Store 1 line width of U, V and A respectively.
-   * Y is composited direct onto the frame.
-   */
-  guint16 *out_buffers[3];
-  guchar subtitle_index[4];
-  guchar menu_index[4];
-  guchar subtitle_alpha[4];
-  guchar menu_alpha[4];
-
-  guint32 current_clut[16];
-
-  gboolean have_title;
-  gboolean forced_display;
-
-  GstClockTime start_display_time;
-  GstClockTime end_display_time;
-  gint left, top, 
-      right, bottom;
-  gint clip_left, clip_top, 
-      clip_right, clip_bottom;
-
-  gint in_width, in_height;
-  gint current_button;
-
-  GstData *pending_video_buffer;
-  GstClockTime next_video_time;
-  GstData *pending_subtitle_buffer;
-  GstClockTime next_subtitle_time;
-};
-
-struct _GstMpeg2SubtClass {
-  GstElementClass parent_class;
-};
-
-GType gst_mpeg2subt_get_type(void);
-
-
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
-
-
-#endif /* __GST_MPEG2SUBT_H__ */
diff --git a/gst/mpeg2sub/mpeg2subt.vcproj b/gst/mpeg2sub/mpeg2subt.vcproj
deleted file mode 100644
index a356f88b..00000000
--- a/gst/mpeg2sub/mpeg2subt.vcproj
+++ /dev/null
@@ -1,148 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>
-<VisualStudioProject
-	ProjectType="Visual C++"
-	Version="7.10"
-	Name="mpeg2subt"
-	ProjectGUID="{979C216F-0ACF-4956-AE00-055A42D678BB}"
-	Keyword="Win32Proj">
-	<Platforms>
-		<Platform
-			Name="Win32"/>
-	</Platforms>
-	<Configurations>
-		<Configuration
-			Name="Debug|Win32"
-			OutputDirectory="../../win32/Debug"
-			IntermediateDirectory="../../win32/Debug"
-			ConfigurationType="2"
-			CharacterSet="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
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